drivers/net/ethernet/rocker/rocker.c

   1 /*
   2  * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
   3  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
   4  * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/pci.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/sched.h>
  17 #include <linux/wait.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/hashtable.h>
  20 #include <linux/crc32.h>
  21 #include <linux/sort.h>
  22 #include <linux/random.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/inetdevice.h>
  25 #include <linux/skbuff.h>
  26 #include <linux/socket.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_ether.h>
  30 #include <linux/if_vlan.h>
  31 #include <linux/if_bridge.h>
  32 #include <linux/bitops.h>
  33 #include <linux/ctype.h>
  34 #include <net/switchdev.h>
  35 #include <net/rtnetlink.h>
  36 #include <net/ip_fib.h>
  37 #include <net/netevent.h>
  38 #include <net/arp.h>
  39 #include <asm-generic/io-64-nonatomic-lo-hi.h>
  40 #include <generated/utsrelease.h>
  41
  42 #include "rocker.h"
  43
  44 static const char rocker_driver_name[] = "rocker";
  45
  46 static const struct pci_device_id rocker_pci_id_table[] = {
  47         {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
  48         {0, }
  49 };
  50
  51 struct rocker_flow_tbl_key {
  52         u32 priority;
  53         enum rocker_of_dpa_table_id tbl_id;
  54         union {
  55                 struct {
  56                         u32 in_pport;
  57                         u32 in_pport_mask;
  58                         enum rocker_of_dpa_table_id goto_tbl;
  59                 } ig_port;
  60                 struct {
  61                         u32 in_pport;
  62                         __be16 vlan_id;
  63                         __be16 vlan_id_mask;
  64                         enum rocker_of_dpa_table_id goto_tbl;
  65                         bool untagged;
  66                         __be16 new_vlan_id;
  67                 } vlan;
  68                 struct {
  69                         u32 in_pport;
  70                         u32 in_pport_mask;
  71                         __be16 eth_type;
  72                         u8 eth_dst[ETH_ALEN];
  73                         u8 eth_dst_mask[ETH_ALEN];
  74                         __be16 vlan_id;
  75                         __be16 vlan_id_mask;
  76                         enum rocker_of_dpa_table_id goto_tbl;
  77                         bool copy_to_cpu;
  78                 } term_mac;
  79                 struct {
  80                         __be16 eth_type;
  81                         __be32 dst4;
  82                         __be32 dst4_mask;
  83                         enum rocker_of_dpa_table_id goto_tbl;
  84                         u32 group_id;
  85                 } ucast_routing;
  86                 struct {
  87                         u8 eth_dst[ETH_ALEN];
  88                         u8 eth_dst_mask[ETH_ALEN];
  89                         int has_eth_dst;
  90                         int has_eth_dst_mask;
  91                         __be16 vlan_id;
  92                         u32 tunnel_id;
  93                         enum rocker_of_dpa_table_id goto_tbl;
  94                         u32 group_id;
  95                         bool copy_to_cpu;
  96                 } bridge;
  97                 struct {
  98                         u32 in_pport;
  99                         u32 in_pport_mask;
 100                         u8 eth_src[ETH_ALEN];
 101                         u8 eth_src_mask[ETH_ALEN];
 102                         u8 eth_dst[ETH_ALEN];
 103                         u8 eth_dst_mask[ETH_ALEN];
 104                         __be16 eth_type;
 105                         __be16 vlan_id;
 106                         __be16 vlan_id_mask;
 107                         u8 ip_proto;
 108                         u8 ip_proto_mask;
 109                         u8 ip_tos;
 110                         u8 ip_tos_mask;
 111                         u32 group_id;
 112                 } acl;
 113         };
 114 };
 115
 116 struct rocker_flow_tbl_entry {
 117         struct hlist_node entry;
 118         u32 cmd;
 119         u64 cookie;
 120         struct rocker_flow_tbl_key key;
 121         size_t key_len;
 122         u32 key_crc32; /* key */
 123 };
 124
 125 struct rocker_group_tbl_entry {
 126         struct hlist_node entry;
 127         u32 cmd;
 128         u32 group_id; /* key */
 129         u16 group_count;
 130         u32 *group_ids;
 131         union {
 132                 struct {
 133                         u8 pop_vlan;
 134                 } l2_interface;
 135                 struct {
 136                         u8 eth_src[ETH_ALEN];
 137                         u8 eth_dst[ETH_ALEN];
 138                         __be16 vlan_id;
 139                         u32 group_id;
 140                 } l2_rewrite;
 141                 struct {
 142                         u8 eth_src[ETH_ALEN];
 143                         u8 eth_dst[ETH_ALEN];
 144                         __be16 vlan_id;
 145                         bool ttl_check;
 146                         u32 group_id;
 147                 } l3_unicast;
 148         };
 149 };
 150
 151 struct rocker_fdb_tbl_entry {
 152         struct hlist_node entry;
 153         u32 key_crc32; /* key */
 154         bool learned;
 155         struct rocker_fdb_tbl_key {
 156                 u32 pport;
 157                 u8 addr[ETH_ALEN];
 158                 __be16 vlan_id;
 159         } key;
 160 };
 161
 162 struct rocker_internal_vlan_tbl_entry {
 163         struct hlist_node entry;
 164         int ifindex; /* key */
 165         u32 ref_count;
 166         __be16 vlan_id;
 167 };
 168
 169 struct rocker_neigh_tbl_entry {
 170         struct hlist_node entry;
 171         __be32 ip_addr; /* key */
 172         struct net_device *dev;
 173         u32 ref_count;
 174         u32 index;
 175         u8 eth_dst[ETH_ALEN];
 176         bool ttl_check;
 177 };
 178
 179 struct rocker_desc_info {
 180         char *data; /* mapped */
 181         size_t data_size;
 182         size_t tlv_size;
 183         struct rocker_desc *desc;
 184         DEFINE_DMA_UNMAP_ADDR(mapaddr);
 185 };
 186
 187 struct rocker_dma_ring_info {
 188         size_t size;
 189         u32 head;
 190         u32 tail;
 191         struct rocker_desc *desc; /* mapped */
 192         dma_addr_t mapaddr;
 193         struct rocker_desc_info *desc_info;
 194         unsigned int type;
 195 };
 196
 197 struct rocker;
 198
 199 enum {
 200         ROCKER_CTRL_LINK_LOCAL_MCAST,
 201         ROCKER_CTRL_LOCAL_ARP,
 202         ROCKER_CTRL_IPV4_MCAST,
 203         ROCKER_CTRL_IPV6_MCAST,
 204         ROCKER_CTRL_DFLT_BRIDGING,
 205         ROCKER_CTRL_MAX,
 206 };
 207
 208 #define ROCKER_INTERNAL_VLAN_ID_BASE    0x0f00
 209 #define ROCKER_N_INTERNAL_VLANS         255
 210 #define ROCKER_VLAN_BITMAP_LEN          BITS_TO_LONGS(VLAN_N_VID)
 211 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
 212
 213 struct rocker_port {
 214         struct net_device *dev;
 215         struct net_device *bridge_dev;
 216         struct rocker *rocker;
 217         unsigned int port_number;
 218         u32 pport;
 219         __be16 internal_vlan_id;
 220         int stp_state;
 221         u32 brport_flags;
 222         bool ctrls[ROCKER_CTRL_MAX];
 223         unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
 224         struct napi_struct napi_tx;
 225         struct napi_struct napi_rx;
 226         struct rocker_dma_ring_info tx_ring;
 227         struct rocker_dma_ring_info rx_ring;
 228         struct list_head trans_mem;
 229 };
 230
 231 struct rocker {
 232         struct pci_dev *pdev;
 233         u8 __iomem *hw_addr;
 234         struct msix_entry *msix_entries;
 235         unsigned int port_count;
 236         struct rocker_port **ports;
 237         struct {
 238                 u64 id;
 239         } hw;
 240         spinlock_t cmd_ring_lock;
 241         struct rocker_dma_ring_info cmd_ring;
 242         struct rocker_dma_ring_info event_ring;
 243         DECLARE_HASHTABLE(flow_tbl, 16);
 244         spinlock_t flow_tbl_lock;
 245         u64 flow_tbl_next_cookie;
 246         DECLARE_HASHTABLE(group_tbl, 16);
 247         spinlock_t group_tbl_lock;
 248         DECLARE_HASHTABLE(fdb_tbl, 16);
 249         spinlock_t fdb_tbl_lock;
 250         unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
 251         DECLARE_HASHTABLE(internal_vlan_tbl, 8);
 252         spinlock_t internal_vlan_tbl_lock;
 253         DECLARE_HASHTABLE(neigh_tbl, 16);
 254         spinlock_t neigh_tbl_lock;
 255         u32 neigh_tbl_next_index;
 256 };
 257
 258 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 259 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 260 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 261 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
 262 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
 263 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
 264 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
 265 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
 266 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
 267
 268 /* Rocker priority levels for flow table entries.  Higher
 269  * priority match takes precedence over lower priority match.
 270  */
 271
 272 enum {
 273         ROCKER_PRIORITY_UNKNOWN = 0,
 274         ROCKER_PRIORITY_IG_PORT = 1,
 275         ROCKER_PRIORITY_VLAN = 1,
 276         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
 277         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
 278         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
 279         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
 280         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
 281         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
 282         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
 283         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
 284         ROCKER_PRIORITY_ACL_CTRL = 3,
 285         ROCKER_PRIORITY_ACL_NORMAL = 2,
 286         ROCKER_PRIORITY_ACL_DFLT = 1,
 287 };
 288
 289 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
 290 {
 291         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
 292         u16 end = 0xffe;
 293         u16 _vlan_id = ntohs(vlan_id);
 294
 295         return (_vlan_id >= start && _vlan_id <= end);
 296 }
 297
 298 static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port,
 299                                       u16 vid, bool *pop_vlan)
 300 {
 301         __be16 vlan_id;
 302
 303         if (pop_vlan)
 304                 *pop_vlan = false;
 305         vlan_id = htons(vid);
 306         if (!vlan_id) {
 307                 vlan_id = rocker_port->internal_vlan_id;
 308                 if (pop_vlan)
 309                         *pop_vlan = true;
 310         }
 311
 312         return vlan_id;
 313 }
 314
 315 static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port,
 316                                    __be16 vlan_id)
 317 {
 318         if (rocker_vlan_id_is_internal(vlan_id))
 319                 return 0;
 320
 321         return ntohs(vlan_id);
 322 }
 323
 324 static bool rocker_port_is_bridged(struct rocker_port *rocker_port)
 325 {
 326         return !!rocker_port->bridge_dev;
 327 }
 328
 329 static void *__rocker_port_mem_alloc(struct rocker_port *rocker_port,
 330                                      enum switchdev_trans trans, size_t size)
 331 {
 332         struct list_head *elem = NULL;
 333
 334         /* If in transaction prepare phase, allocate the memory
 335          * and enqueue it on a per-port list.  If in transaction
 336          * commit phase, dequeue the memory from the per-port list
 337          * rather than re-allocating the memory.  The idea is the
 338          * driver code paths for prepare and commit are identical
 339          * so the memory allocated in the prepare phase is the
 340          * memory used in the commit phase.
 341          */
 342
 343         switch (trans) {
 344         case SWITCHDEV_TRANS_PREPARE:
 345                 elem = kzalloc(size + sizeof(*elem), GFP_KERNEL);
 346                 if (!elem)
 347                         return NULL;
 348                 list_add_tail(elem, &rocker_port->trans_mem);
 349                 break;
 350         case SWITCHDEV_TRANS_COMMIT:
 351                 BUG_ON(list_empty(&rocker_port->trans_mem));
 352                 elem = rocker_port->trans_mem.next;
 353                 list_del_init(elem);
 354                 break;
 355         case SWITCHDEV_TRANS_NONE:
 356                 elem = kzalloc(size + sizeof(*elem), GFP_KERNEL);
 357                 if (elem)
 358                         INIT_LIST_HEAD(elem);
 359                 break;
 360         default:
 361                 break;
 362         }
 363
 364         return elem ? elem + 1 : NULL;
 365 }
 366
 367 static void *rocker_port_kzalloc(struct rocker_port *rocker_port,
 368                                  enum switchdev_trans trans, size_t size)
 369 {
 370         return __rocker_port_mem_alloc(rocker_port, trans, size);
 371 }
 372
 373 static void *rocker_port_kcalloc(struct rocker_port *rocker_port,
 374                                  enum switchdev_trans trans, size_t n,
 375                                  size_t size)
 376 {
 377         return __rocker_port_mem_alloc(rocker_port, trans, n * size);
 378 }
 379
 380 static void rocker_port_kfree(struct rocker_port *rocker_port,
 381                               enum switchdev_trans trans, const void *mem)
 382 {
 383         struct list_head *elem;
 384
 385         /* Frees are ignored if in transaction prepare phase.  The
 386          * memory remains on the per-port list until freed in the
 387          * commit phase.
 388          */
 389
 390         if (trans == SWITCHDEV_TRANS_PREPARE)
 391                 return;
 392
 393         elem = (struct list_head *)mem - 1;
 394         BUG_ON(!list_empty(elem));
 395         kfree(elem);
 396 }
 397
 398 struct rocker_wait {
 399         wait_queue_head_t wait;
 400         bool done;
 401 };
 402
 403 static void rocker_wait_reset(struct rocker_wait *wait)
 404 {
 405         wait->done = false;
 406 }
 407
 408 static void rocker_wait_init(struct rocker_wait *wait)
 409 {
 410         init_waitqueue_head(&wait->wait);
 411         rocker_wait_reset(wait);
 412 }
 413
 414 static struct rocker_wait *rocker_wait_create(struct rocker_port *rocker_port,
 415                                               enum switchdev_trans trans)
 416 {
 417         struct rocker_wait *wait;
 418
 419         wait = rocker_port_kzalloc(rocker_port, trans, sizeof(*wait));
 420         if (!wait)
 421                 return NULL;
 422         rocker_wait_init(wait);
 423         return wait;
 424 }
 425
 426 static void rocker_wait_destroy(struct rocker_port *rocker_port,
 427                                 enum switchdev_trans trans,
 428                                 struct rocker_wait *wait)
 429 {
 430         rocker_port_kfree(rocker_port, trans, wait);
 431 }
 432
 433 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
 434                                       unsigned long timeout)
 435 {
 436         wait_event_timeout(wait->wait, wait->done, HZ / 10);
 437         if (!wait->done)
 438                 return false;
 439         return true;
 440 }
 441
 442 static void rocker_wait_wake_up(struct rocker_wait *wait)
 443 {
 444         wait->done = true;
 445         wake_up(&wait->wait);
 446 }
 447
 448 static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector)
 449 {
 450         return rocker->msix_entries[vector].vector;
 451 }
 452
 453 static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port)
 454 {
 455         return rocker_msix_vector(rocker_port->rocker,
 456                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
 457 }
 458
 459 static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port)
 460 {
 461         return rocker_msix_vector(rocker_port->rocker,
 462                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
 463 }
 464
 465 #define rocker_write32(rocker, reg, val)        \
 466         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 467 #define rocker_read32(rocker, reg)      \
 468         readl((rocker)->hw_addr + (ROCKER_ ## reg))
 469 #define rocker_write64(rocker, reg, val)        \
 470         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 471 #define rocker_read64(rocker, reg)      \
 472         readq((rocker)->hw_addr + (ROCKER_ ## reg))
 473
 474 /*****************************
 475  * HW basic testing functions
 476  *****************************/
 477
 478 static int rocker_reg_test(struct rocker *rocker)
 479 {
 480         struct pci_dev *pdev = rocker->pdev;
 481         u64 test_reg;
 482         u64 rnd;
 483
 484         rnd = prandom_u32();
 485         rnd >>= 1;
 486         rocker_write32(rocker, TEST_REG, rnd);
 487         test_reg = rocker_read32(rocker, TEST_REG);
 488         if (test_reg != rnd * 2) {
 489                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
 490                         test_reg, rnd * 2);
 491                 return -EIO;
 492         }
 493
 494         rnd = prandom_u32();
 495         rnd <<= 31;
 496         rnd |= prandom_u32();
 497         rocker_write64(rocker, TEST_REG64, rnd);
 498         test_reg = rocker_read64(rocker, TEST_REG64);
 499         if (test_reg != rnd * 2) {
 500                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
 501                         test_reg, rnd * 2);
 502                 return -EIO;
 503         }
 504
 505         return 0;
 506 }
 507
 508 static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait,
 509                                u32 test_type, dma_addr_t dma_handle,
 510                                unsigned char *buf, unsigned char *expect,
 511                                size_t size)
 512 {
 513         struct pci_dev *pdev = rocker->pdev;
 514         int i;
 515
 516         rocker_wait_reset(wait);
 517         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
 518
 519         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
 520                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 521                 return -EIO;
 522         }
 523
 524         for (i = 0; i < size; i++) {
 525                 if (buf[i] != expect[i]) {
 526                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
 527                                 buf[i], i, expect[i]);
 528                         return -EIO;
 529                 }
 530         }
 531         return 0;
 532 }
 533
 534 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
 535 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
 536
 537 static int rocker_dma_test_offset(struct rocker *rocker,
 538                                   struct rocker_wait *wait, int offset)
 539 {
 540         struct pci_dev *pdev = rocker->pdev;
 541         unsigned char *alloc;
 542         unsigned char *buf;
 543         unsigned char *expect;
 544         dma_addr_t dma_handle;
 545         int i;
 546         int err;
 547
 548         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
 549                         GFP_KERNEL | GFP_DMA);
 550         if (!alloc)
 551                 return -ENOMEM;
 552         buf = alloc + offset;
 553         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
 554
 555         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
 556                                     PCI_DMA_BIDIRECTIONAL);
 557         if (pci_dma_mapping_error(pdev, dma_handle)) {
 558                 err = -EIO;
 559                 goto free_alloc;
 560         }
 561
 562         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
 563         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
 564
 565         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
 566         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
 567                                   dma_handle, buf, expect,
 568                                   ROCKER_TEST_DMA_BUF_SIZE);
 569         if (err)
 570                 goto unmap;
 571
 572         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
 573         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
 574                                   dma_handle, buf, expect,
 575                                   ROCKER_TEST_DMA_BUF_SIZE);
 576         if (err)
 577                 goto unmap;
 578
 579         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
 580         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
 581                 expect[i] = ~buf[i];
 582         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
 583                                   dma_handle, buf, expect,
 584                                   ROCKER_TEST_DMA_BUF_SIZE);
 585         if (err)
 586                 goto unmap;
 587
 588 unmap:
 589         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
 590                          PCI_DMA_BIDIRECTIONAL);
 591 free_alloc:
 592         kfree(alloc);
 593
 594         return err;
 595 }
 596
 597 static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait)
 598 {
 599         int i;
 600         int err;
 601
 602         for (i = 0; i < 8; i++) {
 603                 err = rocker_dma_test_offset(rocker, wait, i);
 604                 if (err)
 605                         return err;
 606         }
 607         return 0;
 608 }
 609
 610 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
 611 {
 612         struct rocker_wait *wait = dev_id;
 613
 614         rocker_wait_wake_up(wait);
 615
 616         return IRQ_HANDLED;
 617 }
 618
 619 static int rocker_basic_hw_test(struct rocker *rocker)
 620 {
 621         struct pci_dev *pdev = rocker->pdev;
 622         struct rocker_wait wait;
 623         int err;
 624
 625         err = rocker_reg_test(rocker);
 626         if (err) {
 627                 dev_err(&pdev->dev, "reg test failed\n");
 628                 return err;
 629         }
 630
 631         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
 632                           rocker_test_irq_handler, 0,
 633                           rocker_driver_name, &wait);
 634         if (err) {
 635                 dev_err(&pdev->dev, "cannot assign test irq\n");
 636                 return err;
 637         }
 638
 639         rocker_wait_init(&wait);
 640         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
 641
 642         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
 643                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 644                 err = -EIO;
 645                 goto free_irq;
 646         }
 647
 648         err = rocker_dma_test(rocker, &wait);
 649         if (err)
 650                 dev_err(&pdev->dev, "dma test failed\n");
 651
 652 free_irq:
 653         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
 654         return err;
 655 }
 656
 657 /******
 658  * TLV
 659  ******/
 660
 661 #define ROCKER_TLV_ALIGNTO 8U
 662 #define ROCKER_TLV_ALIGN(len) \
 663         (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
 664 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
 665
 666 /*  <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
 667  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 668  * |             Header          | Pad |           Payload           | Pad |
 669  * |      (struct rocker_tlv)    | ing |                             | ing |
 670  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 671  *  <--------------------------- tlv->len -------------------------->
 672  */
 673
 674 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
 675                                           int *remaining)
 676 {
 677         int totlen = ROCKER_TLV_ALIGN(tlv->len);
 678
 679         *remaining -= totlen;
 680         return (struct rocker_tlv *) ((char *) tlv + totlen);
 681 }
 682
 683 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
 684 {
 685         return remaining >= (int) ROCKER_TLV_HDRLEN &&
 686                tlv->len >= ROCKER_TLV_HDRLEN &&
 687                tlv->len <= remaining;
 688 }
 689
 690 #define rocker_tlv_for_each(pos, head, len, rem)        \
 691         for (pos = head, rem = len;                     \
 692              rocker_tlv_ok(pos, rem);                   \
 693              pos = rocker_tlv_next(pos, &(rem)))
 694
 695 #define rocker_tlv_for_each_nested(pos, tlv, rem)       \
 696         rocker_tlv_for_each(pos, rocker_tlv_data(tlv),  \
 697                             rocker_tlv_len(tlv), rem)
 698
 699 static int rocker_tlv_attr_size(int payload)
 700 {
 701         return ROCKER_TLV_HDRLEN + payload;
 702 }
 703
 704 static int rocker_tlv_total_size(int payload)
 705 {
 706         return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
 707 }
 708
 709 static int rocker_tlv_padlen(int payload)
 710 {
 711         return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
 712 }
 713
 714 static int rocker_tlv_type(const struct rocker_tlv *tlv)
 715 {
 716         return tlv->type;
 717 }
 718
 719 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
 720 {
 721         return (char *) tlv + ROCKER_TLV_HDRLEN;
 722 }
 723
 724 static int rocker_tlv_len(const struct rocker_tlv *tlv)
 725 {
 726         return tlv->len - ROCKER_TLV_HDRLEN;
 727 }
 728
 729 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
 730 {
 731         return *(u8 *) rocker_tlv_data(tlv);
 732 }
 733
 734 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
 735 {
 736         return *(u16 *) rocker_tlv_data(tlv);
 737 }
 738
 739 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
 740 {
 741         return *(__be16 *) rocker_tlv_data(tlv);
 742 }
 743
 744 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
 745 {
 746         return *(u32 *) rocker_tlv_data(tlv);
 747 }
 748
 749 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
 750 {
 751         return *(u64 *) rocker_tlv_data(tlv);
 752 }
 753
 754 static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
 755                              const char *buf, int buf_len)
 756 {
 757         const struct rocker_tlv *tlv;
 758         const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
 759         int rem;
 760
 761         memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
 762
 763         rocker_tlv_for_each(tlv, head, buf_len, rem) {
 764                 u32 type = rocker_tlv_type(tlv);
 765
 766                 if (type > 0 && type <= maxtype)
 767                         tb[type] = (struct rocker_tlv *) tlv;
 768         }
 769 }
 770
 771 static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
 772                                     const struct rocker_tlv *tlv)
 773 {
 774         rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
 775                          rocker_tlv_len(tlv));
 776 }
 777
 778 static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
 779                                   struct rocker_desc_info *desc_info)
 780 {
 781         rocker_tlv_parse(tb, maxtype, desc_info->data,
 782                          desc_info->desc->tlv_size);
 783 }
 784
 785 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
 786 {
 787         return (struct rocker_tlv *) ((char *) desc_info->data +
 788                                                desc_info->tlv_size);
 789 }
 790
 791 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
 792                           int attrtype, int attrlen, const void *data)
 793 {
 794         int tail_room = desc_info->data_size - desc_info->tlv_size;
 795         int total_size = rocker_tlv_total_size(attrlen);
 796         struct rocker_tlv *tlv;
 797
 798         if (unlikely(tail_room < total_size))
 799                 return -EMSGSIZE;
 800
 801         tlv = rocker_tlv_start(desc_info);
 802         desc_info->tlv_size += total_size;
 803         tlv->type = attrtype;
 804         tlv->len = rocker_tlv_attr_size(attrlen);
 805         memcpy(rocker_tlv_data(tlv), data, attrlen);
 806         memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
 807         return 0;
 808 }
 809
 810 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
 811                              int attrtype, u8 value)
 812 {
 813         return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
 814 }
 815
 816 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
 817                               int attrtype, u16 value)
 818 {
 819         return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
 820 }
 821
 822 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
 823                                int attrtype, __be16 value)
 824 {
 825         return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
 826 }
 827
 828 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
 829                               int attrtype, u32 value)
 830 {
 831         return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
 832 }
 833
 834 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
 835                                int attrtype, __be32 value)
 836 {
 837         return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
 838 }
 839
 840 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
 841                               int attrtype, u64 value)
 842 {
 843         return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
 844 }
 845
 846 static struct rocker_tlv *
 847 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
 848 {
 849         struct rocker_tlv *start = rocker_tlv_start(desc_info);
 850
 851         if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
 852                 return NULL;
 853
 854         return start;
 855 }
 856
 857 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
 858                                 struct rocker_tlv *start)
 859 {
 860         start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
 861 }
 862
 863 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
 864                                    struct rocker_tlv *start)
 865 {
 866         desc_info->tlv_size = (char *) start - desc_info->data;
 867 }
 868
 869 /******************************************
 870  * DMA rings and descriptors manipulations
 871  ******************************************/
 872
 873 static u32 __pos_inc(u32 pos, size_t limit)
 874 {
 875         return ++pos == limit ? 0 : pos;
 876 }
 877
 878 static int rocker_desc_err(struct rocker_desc_info *desc_info)
 879 {
 880         int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 881
 882         switch (err) {
 883         case ROCKER_OK:
 884                 return 0;
 885         case -ROCKER_ENOENT:
 886                 return -ENOENT;
 887         case -ROCKER_ENXIO:
 888                 return -ENXIO;
 889         case -ROCKER_ENOMEM:
 890                 return -ENOMEM;
 891         case -ROCKER_EEXIST:
 892                 return -EEXIST;
 893         case -ROCKER_EINVAL:
 894                 return -EINVAL;
 895         case -ROCKER_EMSGSIZE:
 896                 return -EMSGSIZE;
 897         case -ROCKER_ENOTSUP:
 898                 return -EOPNOTSUPP;
 899         case -ROCKER_ENOBUFS:
 900                 return -ENOBUFS;
 901         }
 902
 903         return -EINVAL;
 904 }
 905
 906 static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
 907 {
 908         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 909 }
 910
 911 static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
 912 {
 913         u32 comp_err = desc_info->desc->comp_err;
 914
 915         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
 916 }
 917
 918 static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
 919 {
 920         return (void *)(uintptr_t)desc_info->desc->cookie;
 921 }
 922
 923 static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
 924                                        void *ptr)
 925 {
 926         desc_info->desc->cookie = (uintptr_t) ptr;
 927 }
 928
 929 static struct rocker_desc_info *
 930 rocker_desc_head_get(struct rocker_dma_ring_info *info)
 931 {
 932         static struct rocker_desc_info *desc_info;
 933         u32 head = __pos_inc(info->head, info->size);
 934
 935         desc_info = &info->desc_info[info->head];
 936         if (head == info->tail)
 937                 return NULL; /* ring full */
 938         desc_info->tlv_size = 0;
 939         return desc_info;
 940 }
 941
 942 static void rocker_desc_commit(struct rocker_desc_info *desc_info)
 943 {
 944         desc_info->desc->buf_size = desc_info->data_size;
 945         desc_info->desc->tlv_size = desc_info->tlv_size;
 946 }
 947
 948 static void rocker_desc_head_set(struct rocker *rocker,
 949                                  struct rocker_dma_ring_info *info,
 950                                  struct rocker_desc_info *desc_info)
 951 {
 952         u32 head = __pos_inc(info->head, info->size);
 953
 954         BUG_ON(head == info->tail);
 955         rocker_desc_commit(desc_info);
 956         info->head = head;
 957         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
 958 }
 959
 960 static struct rocker_desc_info *
 961 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
 962 {
 963         static struct rocker_desc_info *desc_info;
 964
 965         if (info->tail == info->head)
 966                 return NULL; /* nothing to be done between head and tail */
 967         desc_info = &info->desc_info[info->tail];
 968         if (!rocker_desc_gen(desc_info))
 969                 return NULL; /* gen bit not set, desc is not ready yet */
 970         info->tail = __pos_inc(info->tail, info->size);
 971         desc_info->tlv_size = desc_info->desc->tlv_size;
 972         return desc_info;
 973 }
 974
 975 static void rocker_dma_ring_credits_set(struct rocker *rocker,
 976                                         struct rocker_dma_ring_info *info,
 977                                         u32 credits)
 978 {
 979         if (credits)
 980                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
 981 }
 982
 983 static unsigned long rocker_dma_ring_size_fix(size_t size)
 984 {
 985         return max(ROCKER_DMA_SIZE_MIN,
 986                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
 987 }
 988
 989 static int rocker_dma_ring_create(struct rocker *rocker,
 990                                   unsigned int type,
 991                                   size_t size,
 992                                   struct rocker_dma_ring_info *info)
 993 {
 994         int i;
 995
 996         BUG_ON(size != rocker_dma_ring_size_fix(size));
 997         info->size = size;
 998         info->type = type;
 999         info->head = 0;
1000         info->tail = 0;
1001         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
1002                                   GFP_KERNEL);
1003         if (!info->desc_info)
1004                 return -ENOMEM;
1005
1006         info->desc = pci_alloc_consistent(rocker->pdev,
1007                                           info->size * sizeof(*info->desc),
1008                                           &info->mapaddr);
1009         if (!info->desc) {
1010                 kfree(info->desc_info);
1011                 return -ENOMEM;
1012         }
1013
1014         for (i = 0; i < info->size; i++)
1015                 info->desc_info[i].desc = &info->desc[i];
1016
1017         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
1018                        ROCKER_DMA_DESC_CTRL_RESET);
1019         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
1020         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
1021
1022         return 0;
1023 }
1024
1025 static void rocker_dma_ring_destroy(struct rocker *rocker,
1026                                     struct rocker_dma_ring_info *info)
1027 {
1028         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
1029
1030         pci_free_consistent(rocker->pdev,
1031                             info->size * sizeof(struct rocker_desc),
1032                             info->desc, info->mapaddr);
1033         kfree(info->desc_info);
1034 }
1035
1036 static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
1037                                              struct rocker_dma_ring_info *info)
1038 {
1039         int i;
1040
1041         BUG_ON(info->head || info->tail);
1042
1043         /* When ring is consumer, we need to advance head for each desc.
1044          * That tells hw that the desc is ready to be used by it.
1045          */
1046         for (i = 0; i < info->size - 1; i++)
1047                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
1048         rocker_desc_commit(&info->desc_info[i]);
1049 }
1050
1051 static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
1052                                       struct rocker_dma_ring_info *info,
1053                                       int direction, size_t buf_size)
1054 {
1055         struct pci_dev *pdev = rocker->pdev;
1056         int i;
1057         int err;
1058
1059         for (i = 0; i < info->size; i++) {
1060                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1061                 struct rocker_desc *desc = &info->desc[i];
1062                 dma_addr_t dma_handle;
1063                 char *buf;
1064
1065                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
1066                 if (!buf) {
1067                         err = -ENOMEM;
1068                         goto rollback;
1069                 }
1070
1071                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1072                 if (pci_dma_mapping_error(pdev, dma_handle)) {
1073                         kfree(buf);
1074                         err = -EIO;
1075                         goto rollback;
1076                 }
1077
1078                 desc_info->data = buf;
1079                 desc_info->data_size = buf_size;
1080                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1081
1082                 desc->buf_addr = dma_handle;
1083                 desc->buf_size = buf_size;
1084         }
1085         return 0;
1086
1087 rollback:
1088         for (i--; i >= 0; i--) {
1089                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1090
1091                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1092                                  desc_info->data_size, direction);
1093                 kfree(desc_info->data);
1094         }
1095         return err;
1096 }
1097
1098 static void rocker_dma_ring_bufs_free(struct rocker *rocker,
1099                                       struct rocker_dma_ring_info *info,
1100                                       int direction)
1101 {
1102         struct pci_dev *pdev = rocker->pdev;
1103         int i;
1104
1105         for (i = 0; i < info->size; i++) {
1106                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1107                 struct rocker_desc *desc = &info->desc[i];
1108
1109                 desc->buf_addr = 0;
1110                 desc->buf_size = 0;
1111                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1112                                  desc_info->data_size, direction);
1113                 kfree(desc_info->data);
1114         }
1115 }
1116
1117 static int rocker_dma_rings_init(struct rocker *rocker)
1118 {
1119         struct pci_dev *pdev = rocker->pdev;
1120         int err;
1121
1122         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1123                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
1124                                      &rocker->cmd_ring);
1125         if (err) {
1126                 dev_err(&pdev->dev, "failed to create command dma ring\n");
1127                 return err;
1128         }
1129
1130         spin_lock_init(&rocker->cmd_ring_lock);
1131
1132         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1133                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1134         if (err) {
1135                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1136                 goto err_dma_cmd_ring_bufs_alloc;
1137         }
1138
1139         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1140                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
1141                                      &rocker->event_ring);
1142         if (err) {
1143                 dev_err(&pdev->dev, "failed to create event dma ring\n");
1144                 goto err_dma_event_ring_create;
1145         }
1146
1147         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1148                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
1149         if (err) {
1150                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1151                 goto err_dma_event_ring_bufs_alloc;
1152         }
1153         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1154         return 0;
1155
1156 err_dma_event_ring_bufs_alloc:
1157         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1158 err_dma_event_ring_create:
1159         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1160                                   PCI_DMA_BIDIRECTIONAL);
1161 err_dma_cmd_ring_bufs_alloc:
1162         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1163         return err;
1164 }
1165
1166 static void rocker_dma_rings_fini(struct rocker *rocker)
1167 {
1168         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1169                                   PCI_DMA_BIDIRECTIONAL);
1170         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1171         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1172                                   PCI_DMA_BIDIRECTIONAL);
1173         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1174 }
1175
1176 static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1177                                       struct rocker_port *rocker_port,
1178                                       struct rocker_desc_info *desc_info,
1179                                       struct sk_buff *skb, size_t buf_len)
1180 {
1181         struct pci_dev *pdev = rocker->pdev;
1182         dma_addr_t dma_handle;
1183
1184         dma_handle = pci_map_single(pdev, skb->data, buf_len,
1185                                     PCI_DMA_FROMDEVICE);
1186         if (pci_dma_mapping_error(pdev, dma_handle))
1187                 return -EIO;
1188         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1189                 goto tlv_put_failure;
1190         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1191                 goto tlv_put_failure;
1192         return 0;
1193
1194 tlv_put_failure:
1195         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1196         desc_info->tlv_size = 0;
1197         return -EMSGSIZE;
1198 }
1199
1200 static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1201 {
1202         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1203 }
1204
1205 static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1206                                         struct rocker_port *rocker_port,
1207                                         struct rocker_desc_info *desc_info)
1208 {
1209         struct net_device *dev = rocker_port->dev;
1210         struct sk_buff *skb;
1211         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1212         int err;
1213
1214         /* Ensure that hw will see tlv_size zero in case of an error.
1215          * That tells hw to use another descriptor.
1216          */
1217         rocker_desc_cookie_ptr_set(desc_info, NULL);
1218         desc_info->tlv_size = 0;
1219
1220         skb = netdev_alloc_skb_ip_align(dev, buf_len);
1221         if (!skb)
1222                 return -ENOMEM;
1223         err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1224                                          skb, buf_len);
1225         if (err) {
1226                 dev_kfree_skb_any(skb);
1227                 return err;
1228         }
1229         rocker_desc_cookie_ptr_set(desc_info, skb);
1230         return 0;
1231 }
1232
1233 static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1234                                          struct rocker_tlv **attrs)
1235 {
1236         struct pci_dev *pdev = rocker->pdev;
1237         dma_addr_t dma_handle;
1238         size_t len;
1239
1240         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1241             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1242                 return;
1243         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1244         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1245         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1246 }
1247
1248 static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1249                                         struct rocker_desc_info *desc_info)
1250 {
1251         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1252         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1253
1254         if (!skb)
1255                 return;
1256         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1257         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1258         dev_kfree_skb_any(skb);
1259 }
1260
1261 static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1262                                          struct rocker_port *rocker_port)
1263 {
1264         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1265         int i;
1266         int err;
1267
1268         for (i = 0; i < rx_ring->size; i++) {
1269                 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1270                                                    &rx_ring->desc_info[i]);
1271                 if (err)
1272                         goto rollback;
1273         }
1274         return 0;
1275
1276 rollback:
1277         for (i--; i >= 0; i--)
1278                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1279         return err;
1280 }
1281
1282 static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1283                                          struct rocker_port *rocker_port)
1284 {
1285         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1286         int i;
1287
1288         for (i = 0; i < rx_ring->size; i++)
1289                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1290 }
1291
1292 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1293 {
1294         struct rocker *rocker = rocker_port->rocker;
1295         int err;
1296
1297         err = rocker_dma_ring_create(rocker,
1298                                      ROCKER_DMA_TX(rocker_port->port_number),
1299                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1300                                      &rocker_port->tx_ring);
1301         if (err) {
1302                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1303                 return err;
1304         }
1305
1306         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1307                                          PCI_DMA_TODEVICE,
1308                                          ROCKER_DMA_TX_DESC_SIZE);
1309         if (err) {
1310                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1311                 goto err_dma_tx_ring_bufs_alloc;
1312         }
1313
1314         err = rocker_dma_ring_create(rocker,
1315                                      ROCKER_DMA_RX(rocker_port->port_number),
1316                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1317                                      &rocker_port->rx_ring);
1318         if (err) {
1319                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1320                 goto err_dma_rx_ring_create;
1321         }
1322
1323         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1324                                          PCI_DMA_BIDIRECTIONAL,
1325                                          ROCKER_DMA_RX_DESC_SIZE);
1326         if (err) {
1327                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1328                 goto err_dma_rx_ring_bufs_alloc;
1329         }
1330
1331         err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1332         if (err) {
1333                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1334                 goto err_dma_rx_ring_skbs_alloc;
1335         }
1336         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1337
1338         return 0;
1339
1340 err_dma_rx_ring_skbs_alloc:
1341         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1342                                   PCI_DMA_BIDIRECTIONAL);
1343 err_dma_rx_ring_bufs_alloc:
1344         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1345 err_dma_rx_ring_create:
1346         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1347                                   PCI_DMA_TODEVICE);
1348 err_dma_tx_ring_bufs_alloc:
1349         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1350         return err;
1351 }
1352
1353 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1354 {
1355         struct rocker *rocker = rocker_port->rocker;
1356
1357         rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1358         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1359                                   PCI_DMA_BIDIRECTIONAL);
1360         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1361         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1362                                   PCI_DMA_TODEVICE);
1363         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1364 }
1365
1366 static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1367 {
1368         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1369
1370         if (enable)
1371                 val |= 1ULL << rocker_port->pport;
1372         else
1373                 val &= ~(1ULL << rocker_port->pport);
1374         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1375 }
1376
1377 /********************************
1378  * Interrupt handler and helpers
1379  ********************************/
1380
1381 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1382 {
1383         struct rocker *rocker = dev_id;
1384         struct rocker_desc_info *desc_info;
1385         struct rocker_wait *wait;
1386         u32 credits = 0;
1387
1388         spin_lock(&rocker->cmd_ring_lock);
1389         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1390                 wait = rocker_desc_cookie_ptr_get(desc_info);
1391                 rocker_wait_wake_up(wait);
1392                 credits++;
1393         }
1394         spin_unlock(&rocker->cmd_ring_lock);
1395         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1396
1397         return IRQ_HANDLED;
1398 }
1399
1400 static void rocker_port_link_up(struct rocker_port *rocker_port)
1401 {
1402         netif_carrier_on(rocker_port->dev);
1403         netdev_info(rocker_port->dev, "Link is up\n");
1404 }
1405
1406 static void rocker_port_link_down(struct rocker_port *rocker_port)
1407 {
1408         netif_carrier_off(rocker_port->dev);
1409         netdev_info(rocker_port->dev, "Link is down\n");
1410 }
1411
1412 static int rocker_event_link_change(struct rocker *rocker,
1413                                     const struct rocker_tlv *info)
1414 {
1415         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1416         unsigned int port_number;
1417         bool link_up;
1418         struct rocker_port *rocker_port;
1419
1420         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1421         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1422             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1423                 return -EIO;
1424         port_number =
1425                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1426         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1427
1428         if (port_number >= rocker->port_count)
1429                 return -EINVAL;
1430
1431         rocker_port = rocker->ports[port_number];
1432         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1433                 if (link_up)
1434                         rocker_port_link_up(rocker_port);
1435                 else
1436                         rocker_port_link_down(rocker_port);
1437         }
1438
1439         return 0;
1440 }
1441
1442 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
1443 #define ROCKER_OP_FLAG_LEARNED          BIT(1)
1444 #define ROCKER_OP_FLAG_REFRESH          BIT(2)
1445
1446 static int rocker_port_fdb(struct rocker_port *rocker_port,
1447                            enum switchdev_trans trans,
1448                            const unsigned char *addr,
1449                            __be16 vlan_id, int flags);
1450
1451 struct rocker_mac_vlan_seen_work {
1452         struct work_struct work;
1453         struct rocker_port *rocker_port;
1454         int flags;
1455         unsigned char addr[ETH_ALEN];
1456         __be16 vlan_id;
1457 };
1458
1459 static void rocker_event_mac_vlan_seen_work(struct work_struct *work)
1460 {
1461         struct rocker_mac_vlan_seen_work *sw =
1462                 container_of(work, struct rocker_mac_vlan_seen_work, work);
1463
1464         rtnl_lock();
1465         rocker_port_fdb(sw->rocker_port, SWITCHDEV_TRANS_NONE,
1466                         sw->addr, sw->vlan_id, sw->flags);
1467         rtnl_unlock();
1468
1469         kfree(work);
1470 }
1471
1472 static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1473                                       const struct rocker_tlv *info)
1474 {
1475         struct rocker_mac_vlan_seen_work *sw;
1476         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1477         unsigned int port_number;
1478         struct rocker_port *rocker_port;
1479         unsigned char *addr;
1480         int flags = ROCKER_OP_FLAG_LEARNED;
1481         __be16 vlan_id;
1482
1483         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1484         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1485             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1486             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1487                 return -EIO;
1488         port_number =
1489                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1490         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1491         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1492
1493         if (port_number >= rocker->port_count)
1494                 return -EINVAL;
1495
1496         rocker_port = rocker->ports[port_number];
1497
1498         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1499             rocker_port->stp_state != BR_STATE_FORWARDING)
1500                 return 0;
1501
1502         sw = kmalloc(sizeof(*sw), GFP_ATOMIC);
1503         if (!sw)
1504                 return -ENOMEM;
1505
1506         INIT_WORK(&sw->work, rocker_event_mac_vlan_seen_work);
1507
1508         sw->rocker_port = rocker_port;
1509         sw->flags = flags;
1510         ether_addr_copy(sw->addr, addr);
1511         sw->vlan_id = vlan_id;
1512
1513         schedule_work(&sw->work);
1514
1515         return 0;
1516 }
1517
1518 static int rocker_event_process(struct rocker *rocker,
1519                                 struct rocker_desc_info *desc_info)
1520 {
1521         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1522         struct rocker_tlv *info;
1523         u16 type;
1524
1525         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1526         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1527             !attrs[ROCKER_TLV_EVENT_INFO])
1528                 return -EIO;
1529
1530         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1531         info = attrs[ROCKER_TLV_EVENT_INFO];
1532
1533         switch (type) {
1534         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1535                 return rocker_event_link_change(rocker, info);
1536         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1537                 return rocker_event_mac_vlan_seen(rocker, info);
1538         }
1539
1540         return -EOPNOTSUPP;
1541 }
1542
1543 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1544 {
1545         struct rocker *rocker = dev_id;
1546         struct pci_dev *pdev = rocker->pdev;
1547         struct rocker_desc_info *desc_info;
1548         u32 credits = 0;
1549         int err;
1550
1551         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1552                 err = rocker_desc_err(desc_info);
1553                 if (err) {
1554                         dev_err(&pdev->dev, "event desc received with err %d\n",
1555                                 err);
1556                 } else {
1557                         err = rocker_event_process(rocker, desc_info);
1558                         if (err)
1559                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1560                                         err);
1561                 }
1562                 rocker_desc_gen_clear(desc_info);
1563                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1564                 credits++;
1565         }
1566         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1567
1568         return IRQ_HANDLED;
1569 }
1570
1571 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1572 {
1573         struct rocker_port *rocker_port = dev_id;
1574
1575         napi_schedule(&rocker_port->napi_tx);
1576         return IRQ_HANDLED;
1577 }
1578
1579 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1580 {
1581         struct rocker_port *rocker_port = dev_id;
1582
1583         napi_schedule(&rocker_port->napi_rx);
1584         return IRQ_HANDLED;
1585 }
1586
1587 /********************
1588  * Command interface
1589  ********************/
1590
1591 typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1592                                struct rocker_port *rocker_port,
1593                                struct rocker_desc_info *desc_info,
1594                                void *priv);
1595
1596 static int rocker_cmd_exec(struct rocker *rocker,
1597                            struct rocker_port *rocker_port,
1598                            enum switchdev_trans trans,
1599                            rocker_cmd_cb_t prepare, void *prepare_priv,
1600                            rocker_cmd_cb_t process, void *process_priv)
1601 {
1602         struct rocker_desc_info *desc_info;
1603         struct rocker_wait *wait;
1604         unsigned long flags;
1605         int err;
1606
1607         wait = rocker_wait_create(rocker_port, trans);
1608         if (!wait)
1609                 return -ENOMEM;
1610
1611         spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1612
1613         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1614         if (!desc_info) {
1615                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1616                 err = -EAGAIN;
1617                 goto out;
1618         }
1619
1620         err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1621         if (err) {
1622                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1623                 goto out;
1624         }
1625
1626         rocker_desc_cookie_ptr_set(desc_info, wait);
1627
1628         if (trans != SWITCHDEV_TRANS_PREPARE)
1629                 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1630
1631         spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1632
1633         if (trans != SWITCHDEV_TRANS_PREPARE)
1634                 if (!rocker_wait_event_timeout(wait, HZ / 10))
1635                         return -EIO;
1636
1637         err = rocker_desc_err(desc_info);
1638         if (err)
1639                 return err;
1640
1641         if (process)
1642                 err = process(rocker, rocker_port, desc_info, process_priv);
1643
1644         rocker_desc_gen_clear(desc_info);
1645 out:
1646         rocker_wait_destroy(rocker_port, trans, wait);
1647         return err;
1648 }
1649
1650 static int
1651 rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1652                                   struct rocker_port *rocker_port,
1653                                   struct rocker_desc_info *desc_info,
1654                                   void *priv)
1655 {
1656         struct rocker_tlv *cmd_info;
1657
1658         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1659                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1660                 return -EMSGSIZE;
1661         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1662         if (!cmd_info)
1663                 return -EMSGSIZE;
1664         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1665                                rocker_port->pport))
1666                 return -EMSGSIZE;
1667         rocker_tlv_nest_end(desc_info, cmd_info);
1668         return 0;
1669 }
1670
1671 static int
1672 rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1673                                           struct rocker_port *rocker_port,
1674                                           struct rocker_desc_info *desc_info,
1675                                           void *priv)
1676 {
1677         struct ethtool_cmd *ecmd = priv;
1678         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1679         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1680         u32 speed;
1681         u8 duplex;
1682         u8 autoneg;
1683
1684         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1685         if (!attrs[ROCKER_TLV_CMD_INFO])
1686                 return -EIO;
1687
1688         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1689                                 attrs[ROCKER_TLV_CMD_INFO]);
1690         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1691             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1692             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1693                 return -EIO;
1694
1695         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1696         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1697         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1698
1699         ecmd->transceiver = XCVR_INTERNAL;
1700         ecmd->supported = SUPPORTED_TP;
1701         ecmd->phy_address = 0xff;
1702         ecmd->port = PORT_TP;
1703         ethtool_cmd_speed_set(ecmd, speed);
1704         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1705         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1706
1707         return 0;
1708 }
1709
1710 static int
1711 rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1712                                           struct rocker_port *rocker_port,
1713                                           struct rocker_desc_info *desc_info,
1714                                           void *priv)
1715 {
1716         unsigned char *macaddr = priv;
1717         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1718         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1719         struct rocker_tlv *attr;
1720
1721         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1722         if (!attrs[ROCKER_TLV_CMD_INFO])
1723                 return -EIO;
1724
1725         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1726                                 attrs[ROCKER_TLV_CMD_INFO]);
1727         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1728         if (!attr)
1729                 return -EIO;
1730
1731         if (rocker_tlv_len(attr) != ETH_ALEN)
1732                 return -EINVAL;
1733
1734         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1735         return 0;
1736 }
1737
1738 struct port_name {
1739         char *buf;
1740         size_t len;
1741 };
1742
1743 static int
1744 rocker_cmd_get_port_settings_phys_name_proc(struct rocker *rocker,
1745                                             struct rocker_port *rocker_port,
1746                                             struct rocker_desc_info *desc_info,
1747                                             void *priv)
1748 {
1749         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1750         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1751         struct port_name *name = priv;
1752         struct rocker_tlv *attr;
1753         size_t i, j, len;
1754         char *str;
1755
1756         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1757         if (!attrs[ROCKER_TLV_CMD_INFO])
1758                 return -EIO;
1759
1760         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1761                                 attrs[ROCKER_TLV_CMD_INFO]);
1762         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1763         if (!attr)
1764                 return -EIO;
1765
1766         len = min_t(size_t, rocker_tlv_len(attr), name->len);
1767         str = rocker_tlv_data(attr);
1768
1769         /* make sure name only contains alphanumeric characters */
1770         for (i = j = 0; i < len; ++i) {
1771                 if (isalnum(str[i])) {
1772                         name->buf[j] = str[i];
1773                         j++;
1774                 }
1775         }
1776
1777         if (j == 0)
1778                 return -EIO;
1779
1780         name->buf[j] = '\0';
1781
1782         return 0;
1783 }
1784
1785 static int
1786 rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1787                                           struct rocker_port *rocker_port,
1788                                           struct rocker_desc_info *desc_info,
1789                                           void *priv)
1790 {
1791         struct ethtool_cmd *ecmd = priv;
1792         struct rocker_tlv *cmd_info;
1793
1794         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1795                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1796                 return -EMSGSIZE;
1797         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1798         if (!cmd_info)
1799                 return -EMSGSIZE;
1800         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1801                                rocker_port->pport))
1802                 return -EMSGSIZE;
1803         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1804                                ethtool_cmd_speed(ecmd)))
1805                 return -EMSGSIZE;
1806         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1807                               ecmd->duplex))
1808                 return -EMSGSIZE;
1809         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1810                               ecmd->autoneg))
1811                 return -EMSGSIZE;
1812         rocker_tlv_nest_end(desc_info, cmd_info);
1813         return 0;
1814 }
1815
1816 static int
1817 rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1818                                           struct rocker_port *rocker_port,
1819                                           struct rocker_desc_info *desc_info,
1820                                           void *priv)
1821 {
1822         unsigned char *macaddr = priv;
1823         struct rocker_tlv *cmd_info;
1824
1825         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1826                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1827                 return -EMSGSIZE;
1828         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1829         if (!cmd_info)
1830                 return -EMSGSIZE;
1831         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1832                                rocker_port->pport))
1833                 return -EMSGSIZE;
1834         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1835                            ETH_ALEN, macaddr))
1836                 return -EMSGSIZE;
1837         rocker_tlv_nest_end(desc_info, cmd_info);
1838         return 0;
1839 }
1840
1841 static int
1842 rocker_cmd_set_port_learning_prep(struct rocker *rocker,
1843                                   struct rocker_port *rocker_port,
1844                                   struct rocker_desc_info *desc_info,
1845                                   void *priv)
1846 {
1847         struct rocker_tlv *cmd_info;
1848
1849         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1850                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1851                 return -EMSGSIZE;
1852         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1853         if (!cmd_info)
1854                 return -EMSGSIZE;
1855         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1856                                rocker_port->pport))
1857                 return -EMSGSIZE;
1858         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1859                               !!(rocker_port->brport_flags & BR_LEARNING)))
1860                 return -EMSGSIZE;
1861         rocker_tlv_nest_end(desc_info, cmd_info);
1862         return 0;
1863 }
1864
1865 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1866                                                 struct ethtool_cmd *ecmd)
1867 {
1868         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1869                                SWITCHDEV_TRANS_NONE,
1870                                rocker_cmd_get_port_settings_prep, NULL,
1871                                rocker_cmd_get_port_settings_ethtool_proc,
1872                                ecmd);
1873 }
1874
1875 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1876                                                 unsigned char *macaddr)
1877 {
1878         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1879                                SWITCHDEV_TRANS_NONE,
1880                                rocker_cmd_get_port_settings_prep, NULL,
1881                                rocker_cmd_get_port_settings_macaddr_proc,
1882                                macaddr);
1883 }
1884
1885 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1886                                                 struct ethtool_cmd *ecmd)
1887 {
1888         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1889                                SWITCHDEV_TRANS_NONE,
1890                                rocker_cmd_set_port_settings_ethtool_prep,
1891                                ecmd, NULL, NULL);
1892 }
1893
1894 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1895                                                 unsigned char *macaddr)
1896 {
1897         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1898                                SWITCHDEV_TRANS_NONE,
1899                                rocker_cmd_set_port_settings_macaddr_prep,
1900                                macaddr, NULL, NULL);
1901 }
1902
1903 static int rocker_port_set_learning(struct rocker_port *rocker_port,
1904                                     enum switchdev_trans trans)
1905 {
1906         return rocker_cmd_exec(rocker_port->rocker, rocker_port, trans,
1907                                rocker_cmd_set_port_learning_prep,
1908                                NULL, NULL, NULL);
1909 }
1910
1911 static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1912                                            struct rocker_flow_tbl_entry *entry)
1913 {
1914         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1915                                entry->key.ig_port.in_pport))
1916                 return -EMSGSIZE;
1917         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1918                                entry->key.ig_port.in_pport_mask))
1919                 return -EMSGSIZE;
1920         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1921                                entry->key.ig_port.goto_tbl))
1922                 return -EMSGSIZE;
1923
1924         return 0;
1925 }
1926
1927 static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1928                                         struct rocker_flow_tbl_entry *entry)
1929 {
1930         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1931                                entry->key.vlan.in_pport))
1932                 return -EMSGSIZE;
1933         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1934                                 entry->key.vlan.vlan_id))
1935                 return -EMSGSIZE;
1936         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1937                                 entry->key.vlan.vlan_id_mask))
1938                 return -EMSGSIZE;
1939         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1940                                entry->key.vlan.goto_tbl))
1941                 return -EMSGSIZE;
1942         if (entry->key.vlan.untagged &&
1943             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1944                                 entry->key.vlan.new_vlan_id))
1945                 return -EMSGSIZE;
1946
1947         return 0;
1948 }
1949
1950 static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1951                                             struct rocker_flow_tbl_entry *entry)
1952 {
1953         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1954                                entry->key.term_mac.in_pport))
1955                 return -EMSGSIZE;
1956         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1957                                entry->key.term_mac.in_pport_mask))
1958                 return -EMSGSIZE;
1959         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1960                                 entry->key.term_mac.eth_type))
1961                 return -EMSGSIZE;
1962         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1963                            ETH_ALEN, entry->key.term_mac.eth_dst))
1964                 return -EMSGSIZE;
1965         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1966                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1967                 return -EMSGSIZE;
1968         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1969                                 entry->key.term_mac.vlan_id))
1970                 return -EMSGSIZE;
1971         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1972                                 entry->key.term_mac.vlan_id_mask))
1973                 return -EMSGSIZE;
1974         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1975                                entry->key.term_mac.goto_tbl))
1976                 return -EMSGSIZE;
1977         if (entry->key.term_mac.copy_to_cpu &&
1978             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1979                               entry->key.term_mac.copy_to_cpu))
1980                 return -EMSGSIZE;
1981
1982         return 0;
1983 }
1984
1985 static int
1986 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1987                                       struct rocker_flow_tbl_entry *entry)
1988 {
1989         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1990                                 entry->key.ucast_routing.eth_type))
1991                 return -EMSGSIZE;
1992         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1993                                 entry->key.ucast_routing.dst4))
1994                 return -EMSGSIZE;
1995         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1996                                 entry->key.ucast_routing.dst4_mask))
1997                 return -EMSGSIZE;
1998         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1999                                entry->key.ucast_routing.goto_tbl))
2000                 return -EMSGSIZE;
2001         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2002                                entry->key.ucast_routing.group_id))
2003                 return -EMSGSIZE;
2004
2005         return 0;
2006 }
2007
2008 static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
2009                                           struct rocker_flow_tbl_entry *entry)
2010 {
2011         if (entry->key.bridge.has_eth_dst &&
2012             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2013                            ETH_ALEN, entry->key.bridge.eth_dst))
2014                 return -EMSGSIZE;
2015         if (entry->key.bridge.has_eth_dst_mask &&
2016             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2017                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
2018                 return -EMSGSIZE;
2019         if (entry->key.bridge.vlan_id &&
2020             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2021                                 entry->key.bridge.vlan_id))
2022                 return -EMSGSIZE;
2023         if (entry->key.bridge.tunnel_id &&
2024             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
2025                                entry->key.bridge.tunnel_id))
2026                 return -EMSGSIZE;
2027         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2028                                entry->key.bridge.goto_tbl))
2029                 return -EMSGSIZE;
2030         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2031                                entry->key.bridge.group_id))
2032                 return -EMSGSIZE;
2033         if (entry->key.bridge.copy_to_cpu &&
2034             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2035                               entry->key.bridge.copy_to_cpu))
2036                 return -EMSGSIZE;
2037
2038         return 0;
2039 }
2040
2041 static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
2042                                        struct rocker_flow_tbl_entry *entry)
2043 {
2044         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2045                                entry->key.acl.in_pport))
2046                 return -EMSGSIZE;
2047         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2048                                entry->key.acl.in_pport_mask))
2049                 return -EMSGSIZE;
2050         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2051                            ETH_ALEN, entry->key.acl.eth_src))
2052                 return -EMSGSIZE;
2053         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
2054                            ETH_ALEN, entry->key.acl.eth_src_mask))
2055                 return -EMSGSIZE;
2056         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2057                            ETH_ALEN, entry->key.acl.eth_dst))
2058                 return -EMSGSIZE;
2059         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2060                            ETH_ALEN, entry->key.acl.eth_dst_mask))
2061                 return -EMSGSIZE;
2062         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2063                                 entry->key.acl.eth_type))
2064                 return -EMSGSIZE;
2065         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2066                                 entry->key.acl.vlan_id))
2067                 return -EMSGSIZE;
2068         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2069                                 entry->key.acl.vlan_id_mask))
2070                 return -EMSGSIZE;
2071
2072         switch (ntohs(entry->key.acl.eth_type)) {
2073         case ETH_P_IP:
2074         case ETH_P_IPV6:
2075                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
2076                                       entry->key.acl.ip_proto))
2077                         return -EMSGSIZE;
2078                 if (rocker_tlv_put_u8(desc_info,
2079                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
2080                                       entry->key.acl.ip_proto_mask))
2081                         return -EMSGSIZE;
2082                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
2083                                       entry->key.acl.ip_tos & 0x3f))
2084                         return -EMSGSIZE;
2085                 if (rocker_tlv_put_u8(desc_info,
2086                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
2087                                       entry->key.acl.ip_tos_mask & 0x3f))
2088                         return -EMSGSIZE;
2089                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
2090                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
2091                         return -EMSGSIZE;
2092                 if (rocker_tlv_put_u8(desc_info,
2093                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
2094                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
2095                         return -EMSGSIZE;
2096                 break;
2097         }
2098
2099         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
2100             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2101                                entry->key.acl.group_id))
2102                 return -EMSGSIZE;
2103
2104         return 0;
2105 }
2106
2107 static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
2108                                    struct rocker_port *rocker_port,
2109                                    struct rocker_desc_info *desc_info,
2110                                    void *priv)
2111 {
2112         struct rocker_flow_tbl_entry *entry = priv;
2113         struct rocker_tlv *cmd_info;
2114         int err = 0;
2115
2116         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2117                 return -EMSGSIZE;
2118         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2119         if (!cmd_info)
2120                 return -EMSGSIZE;
2121         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2122                                entry->key.tbl_id))
2123                 return -EMSGSIZE;
2124         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2125                                entry->key.priority))
2126                 return -EMSGSIZE;
2127         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2128                 return -EMSGSIZE;
2129         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2130                                entry->cookie))
2131                 return -EMSGSIZE;
2132
2133         switch (entry->key.tbl_id) {
2134         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2135                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2136                 break;
2137         case ROCKER_OF_DPA_TABLE_ID_VLAN:
2138                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2139                 break;
2140         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2141                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2142                 break;
2143         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2144                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2145                 break;
2146         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2147                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2148                 break;
2149         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2150                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2151                 break;
2152         default:
2153                 err = -ENOTSUPP;
2154                 break;
2155         }
2156
2157         if (err)
2158                 return err;
2159
2160         rocker_tlv_nest_end(desc_info, cmd_info);
2161
2162         return 0;
2163 }
2164
2165 static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
2166                                    struct rocker_port *rocker_port,
2167                                    struct rocker_desc_info *desc_info,
2168                                    void *priv)
2169 {
2170         const struct rocker_flow_tbl_entry *entry = priv;
2171         struct rocker_tlv *cmd_info;
2172
2173         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2174                 return -EMSGSIZE;
2175         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2176         if (!cmd_info)
2177                 return -EMSGSIZE;
2178         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2179                                entry->cookie))
2180                 return -EMSGSIZE;
2181         rocker_tlv_nest_end(desc_info, cmd_info);
2182
2183         return 0;
2184 }
2185
2186 static int
2187 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2188                                       struct rocker_group_tbl_entry *entry)
2189 {
2190         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2191                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2192                 return -EMSGSIZE;
2193         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2194                               entry->l2_interface.pop_vlan))
2195                 return -EMSGSIZE;
2196
2197         return 0;
2198 }
2199
2200 static int
2201 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2202                                     struct rocker_group_tbl_entry *entry)
2203 {
2204         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2205                                entry->l2_rewrite.group_id))
2206                 return -EMSGSIZE;
2207         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2208             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2209                            ETH_ALEN, entry->l2_rewrite.eth_src))
2210                 return -EMSGSIZE;
2211         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2212             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2213                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2214                 return -EMSGSIZE;
2215         if (entry->l2_rewrite.vlan_id &&
2216             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2217                                 entry->l2_rewrite.vlan_id))
2218                 return -EMSGSIZE;
2219
2220         return 0;
2221 }
2222
2223 static int
2224 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2225                                    struct rocker_group_tbl_entry *entry)
2226 {
2227         int i;
2228         struct rocker_tlv *group_ids;
2229
2230         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2231                                entry->group_count))
2232                 return -EMSGSIZE;
2233
2234         group_ids = rocker_tlv_nest_start(desc_info,
2235                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2236         if (!group_ids)
2237                 return -EMSGSIZE;
2238
2239         for (i = 0; i < entry->group_count; i++)
2240                 /* Note TLV array is 1-based */
2241                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2242                         return -EMSGSIZE;
2243
2244         rocker_tlv_nest_end(desc_info, group_ids);
2245
2246         return 0;
2247 }
2248
2249 static int
2250 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2251                                     struct rocker_group_tbl_entry *entry)
2252 {
2253         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2254             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2255                            ETH_ALEN, entry->l3_unicast.eth_src))
2256                 return -EMSGSIZE;
2257         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2258             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2259                            ETH_ALEN, entry->l3_unicast.eth_dst))
2260                 return -EMSGSIZE;
2261         if (entry->l3_unicast.vlan_id &&
2262             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2263                                 entry->l3_unicast.vlan_id))
2264                 return -EMSGSIZE;
2265         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2266                               entry->l3_unicast.ttl_check))
2267                 return -EMSGSIZE;
2268         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2269                                entry->l3_unicast.group_id))
2270                 return -EMSGSIZE;
2271
2272         return 0;
2273 }
2274
2275 static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2276                                     struct rocker_port *rocker_port,
2277                                     struct rocker_desc_info *desc_info,
2278                                     void *priv)
2279 {
2280         struct rocker_group_tbl_entry *entry = priv;
2281         struct rocker_tlv *cmd_info;
2282         int err = 0;
2283
2284         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2285                 return -EMSGSIZE;
2286         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2287         if (!cmd_info)
2288                 return -EMSGSIZE;
2289
2290         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2291                                entry->group_id))
2292                 return -EMSGSIZE;
2293
2294         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2295         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2296                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2297                 break;
2298         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2299                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2300                 break;
2301         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2302         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2303                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2304                 break;
2305         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2306                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2307                 break;
2308         default:
2309                 err = -ENOTSUPP;
2310                 break;
2311         }
2312
2313         if (err)
2314                 return err;
2315
2316         rocker_tlv_nest_end(desc_info, cmd_info);
2317
2318         return 0;
2319 }
2320
2321 static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2322                                     struct rocker_port *rocker_port,
2323                                     struct rocker_desc_info *desc_info,
2324                                     void *priv)
2325 {
2326         const struct rocker_group_tbl_entry *entry = priv;
2327         struct rocker_tlv *cmd_info;
2328
2329         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2330                 return -EMSGSIZE;
2331         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2332         if (!cmd_info)
2333                 return -EMSGSIZE;
2334         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2335                                entry->group_id))
2336                 return -EMSGSIZE;
2337         rocker_tlv_nest_end(desc_info, cmd_info);
2338
2339         return 0;
2340 }
2341
2342 /***************************************************
2343  * Flow, group, FDB, internal VLAN and neigh tables
2344  ***************************************************/
2345
2346 static int rocker_init_tbls(struct rocker *rocker)
2347 {
2348         hash_init(rocker->flow_tbl);
2349         spin_lock_init(&rocker->flow_tbl_lock);
2350
2351         hash_init(rocker->group_tbl);
2352         spin_lock_init(&rocker->group_tbl_lock);
2353
2354         hash_init(rocker->fdb_tbl);
2355         spin_lock_init(&rocker->fdb_tbl_lock);
2356
2357         hash_init(rocker->internal_vlan_tbl);
2358         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2359
2360         hash_init(rocker->neigh_tbl);
2361         spin_lock_init(&rocker->neigh_tbl_lock);
2362
2363         return 0;
2364 }
2365
2366 static void rocker_free_tbls(struct rocker *rocker)
2367 {
2368         unsigned long flags;
2369         struct rocker_flow_tbl_entry *flow_entry;
2370         struct rocker_group_tbl_entry *group_entry;
2371         struct rocker_fdb_tbl_entry *fdb_entry;
2372         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2373         struct rocker_neigh_tbl_entry *neigh_entry;
2374         struct hlist_node *tmp;
2375         int bkt;
2376
2377         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2378         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2379                 hash_del(&flow_entry->entry);
2380         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2381
2382         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2383         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2384                 hash_del(&group_entry->entry);
2385         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2386
2387         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2388         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2389                 hash_del(&fdb_entry->entry);
2390         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2391
2392         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2393         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2394                            tmp, internal_vlan_entry, entry)
2395                 hash_del(&internal_vlan_entry->entry);
2396         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2397
2398         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2399         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2400                 hash_del(&neigh_entry->entry);
2401         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2402 }
2403
2404 static struct rocker_flow_tbl_entry *
2405 rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2406 {
2407         struct rocker_flow_tbl_entry *found;
2408         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2409
2410         hash_for_each_possible(rocker->flow_tbl, found,
2411                                entry, match->key_crc32) {
2412                 if (memcmp(&found->key, &match->key, key_len) == 0)
2413                         return found;
2414         }
2415
2416         return NULL;
2417 }
2418
2419 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2420                                enum switchdev_trans trans,
2421                                struct rocker_flow_tbl_entry *match)
2422 {
2423         struct rocker *rocker = rocker_port->rocker;
2424         struct rocker_flow_tbl_entry *found;
2425         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2426         unsigned long flags;
2427
2428         match->key_crc32 = crc32(~0, &match->key, key_len);
2429
2430         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2431
2432         found = rocker_flow_tbl_find(rocker, match);
2433
2434         if (found) {
2435                 match->cookie = found->cookie;
2436                 if (trans != SWITCHDEV_TRANS_PREPARE)
2437                         hash_del(&found->entry);
2438                 rocker_port_kfree(rocker_port, trans, found);
2439                 found = match;
2440                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2441         } else {
2442                 found = match;
2443                 found->cookie = rocker->flow_tbl_next_cookie++;
2444                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2445         }
2446
2447         if (trans != SWITCHDEV_TRANS_PREPARE)
2448                 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2449
2450         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2451
2452         return rocker_cmd_exec(rocker, rocker_port, trans,
2453                                rocker_cmd_flow_tbl_add,
2454                                found, NULL, NULL);
2455 }
2456
2457 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2458                                enum switchdev_trans trans,
2459                                struct rocker_flow_tbl_entry *match)
2460 {
2461         struct rocker *rocker = rocker_port->rocker;
2462         struct rocker_flow_tbl_entry *found;
2463         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2464         unsigned long flags;
2465         int err = 0;
2466
2467         match->key_crc32 = crc32(~0, &match->key, key_len);
2468
2469         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2470
2471         found = rocker_flow_tbl_find(rocker, match);
2472
2473         if (found) {
2474                 if (trans != SWITCHDEV_TRANS_PREPARE)
2475                         hash_del(&found->entry);
2476                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2477         }
2478
2479         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2480
2481         rocker_port_kfree(rocker_port, trans, match);
2482
2483         if (found) {
2484                 err = rocker_cmd_exec(rocker, rocker_port, trans,
2485                                       rocker_cmd_flow_tbl_del,
2486                                       found, NULL, NULL);
2487                 rocker_port_kfree(rocker_port, trans, found);
2488         }
2489
2490         return err;
2491 }
2492
2493 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2494                               enum switchdev_trans trans, int flags,
2495                               struct rocker_flow_tbl_entry *entry)
2496 {
2497         if (flags & ROCKER_OP_FLAG_REMOVE)
2498                 return rocker_flow_tbl_del(rocker_port, trans, entry);
2499         else
2500                 return rocker_flow_tbl_add(rocker_port, trans, entry);
2501 }
2502
2503 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2504                                    enum switchdev_trans trans, int flags,
2505                                    u32 in_pport, u32 in_pport_mask,
2506                                    enum rocker_of_dpa_table_id goto_tbl)
2507 {
2508         struct rocker_flow_tbl_entry *entry;
2509
2510         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2511         if (!entry)
2512                 return -ENOMEM;
2513
2514         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2515         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2516         entry->key.ig_port.in_pport = in_pport;
2517         entry->key.ig_port.in_pport_mask = in_pport_mask;
2518         entry->key.ig_port.goto_tbl = goto_tbl;
2519
2520         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2521 }
2522
2523 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2524                                 enum switchdev_trans trans, int flags,
2525                                 u32 in_pport, __be16 vlan_id,
2526                                 __be16 vlan_id_mask,
2527                                 enum rocker_of_dpa_table_id goto_tbl,
2528                                 bool untagged, __be16 new_vlan_id)
2529 {
2530         struct rocker_flow_tbl_entry *entry;
2531
2532         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2533         if (!entry)
2534                 return -ENOMEM;
2535
2536         entry->key.priority = ROCKER_PRIORITY_VLAN;
2537         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2538         entry->key.vlan.in_pport = in_pport;
2539         entry->key.vlan.vlan_id = vlan_id;
2540         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2541         entry->key.vlan.goto_tbl = goto_tbl;
2542
2543         entry->key.vlan.untagged = untagged;
2544         entry->key.vlan.new_vlan_id = new_vlan_id;
2545
2546         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2547 }
2548
2549 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2550                                     enum switchdev_trans trans,
2551                                     u32 in_pport, u32 in_pport_mask,
2552                                     __be16 eth_type, const u8 *eth_dst,
2553                                     const u8 *eth_dst_mask, __be16 vlan_id,
2554                                     __be16 vlan_id_mask, bool copy_to_cpu,
2555                                     int flags)
2556 {
2557         struct rocker_flow_tbl_entry *entry;
2558
2559         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2560         if (!entry)
2561                 return -ENOMEM;
2562
2563         if (is_multicast_ether_addr(eth_dst)) {
2564                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2565                 entry->key.term_mac.goto_tbl =
2566                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2567         } else {
2568                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2569                 entry->key.term_mac.goto_tbl =
2570                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2571         }
2572
2573         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2574         entry->key.term_mac.in_pport = in_pport;
2575         entry->key.term_mac.in_pport_mask = in_pport_mask;
2576         entry->key.term_mac.eth_type = eth_type;
2577         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2578         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2579         entry->key.term_mac.vlan_id = vlan_id;
2580         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2581         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2582
2583         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2584 }
2585
2586 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2587                                   enum switchdev_trans trans, int flags,
2588                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2589                                   __be16 vlan_id, u32 tunnel_id,
2590                                   enum rocker_of_dpa_table_id goto_tbl,
2591                                   u32 group_id, bool copy_to_cpu)
2592 {
2593         struct rocker_flow_tbl_entry *entry;
2594         u32 priority;
2595         bool vlan_bridging = !!vlan_id;
2596         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2597         bool wild = false;
2598
2599         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2600         if (!entry)
2601                 return -ENOMEM;
2602
2603         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2604
2605         if (eth_dst) {
2606                 entry->key.bridge.has_eth_dst = 1;
2607                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2608         }
2609         if (eth_dst_mask) {
2610                 entry->key.bridge.has_eth_dst_mask = 1;
2611                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2612                 if (!ether_addr_equal(eth_dst_mask, ff_mac))
2613                         wild = true;
2614         }
2615
2616         priority = ROCKER_PRIORITY_UNKNOWN;
2617         if (vlan_bridging && dflt && wild)
2618                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2619         else if (vlan_bridging && dflt && !wild)
2620                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2621         else if (vlan_bridging && !dflt)
2622                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2623         else if (!vlan_bridging && dflt && wild)
2624                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2625         else if (!vlan_bridging && dflt && !wild)
2626                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2627         else if (!vlan_bridging && !dflt)
2628                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2629
2630         entry->key.priority = priority;
2631         entry->key.bridge.vlan_id = vlan_id;
2632         entry->key.bridge.tunnel_id = tunnel_id;
2633         entry->key.bridge.goto_tbl = goto_tbl;
2634         entry->key.bridge.group_id = group_id;
2635         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2636
2637         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2638 }
2639
2640 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2641                                           enum switchdev_trans trans,
2642                                           __be16 eth_type, __be32 dst,
2643                                           __be32 dst_mask, u32 priority,
2644                                           enum rocker_of_dpa_table_id goto_tbl,
2645                                           u32 group_id, int flags)
2646 {
2647         struct rocker_flow_tbl_entry *entry;
2648
2649         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2650         if (!entry)
2651                 return -ENOMEM;
2652
2653         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2654         entry->key.priority = priority;
2655         entry->key.ucast_routing.eth_type = eth_type;
2656         entry->key.ucast_routing.dst4 = dst;
2657         entry->key.ucast_routing.dst4_mask = dst_mask;
2658         entry->key.ucast_routing.goto_tbl = goto_tbl;
2659         entry->key.ucast_routing.group_id = group_id;
2660         entry->key_len = offsetof(struct rocker_flow_tbl_key,
2661                                   ucast_routing.group_id);
2662
2663         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2664 }
2665
2666 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2667                                enum switchdev_trans trans, int flags,
2668                                u32 in_pport, u32 in_pport_mask,
2669                                const u8 *eth_src, const u8 *eth_src_mask,
2670                                const u8 *eth_dst, const u8 *eth_dst_mask,
2671                                __be16 eth_type, __be16 vlan_id,
2672                                __be16 vlan_id_mask, u8 ip_proto,
2673                                u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
2674                                u32 group_id)
2675 {
2676         u32 priority;
2677         struct rocker_flow_tbl_entry *entry;
2678
2679         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2680         if (!entry)
2681                 return -ENOMEM;
2682
2683         priority = ROCKER_PRIORITY_ACL_NORMAL;
2684         if (eth_dst && eth_dst_mask) {
2685                 if (ether_addr_equal(eth_dst_mask, mcast_mac))
2686                         priority = ROCKER_PRIORITY_ACL_DFLT;
2687                 else if (is_link_local_ether_addr(eth_dst))
2688                         priority = ROCKER_PRIORITY_ACL_CTRL;
2689         }
2690
2691         entry->key.priority = priority;
2692         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2693         entry->key.acl.in_pport = in_pport;
2694         entry->key.acl.in_pport_mask = in_pport_mask;
2695
2696         if (eth_src)
2697                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2698         if (eth_src_mask)
2699                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2700         if (eth_dst)
2701                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2702         if (eth_dst_mask)
2703                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2704
2705         entry->key.acl.eth_type = eth_type;
2706         entry->key.acl.vlan_id = vlan_id;
2707         entry->key.acl.vlan_id_mask = vlan_id_mask;
2708         entry->key.acl.ip_proto = ip_proto;
2709         entry->key.acl.ip_proto_mask = ip_proto_mask;
2710         entry->key.acl.ip_tos = ip_tos;
2711         entry->key.acl.ip_tos_mask = ip_tos_mask;
2712         entry->key.acl.group_id = group_id;
2713
2714         return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2715 }
2716
2717 static struct rocker_group_tbl_entry *
2718 rocker_group_tbl_find(struct rocker *rocker,
2719                       struct rocker_group_tbl_entry *match)
2720 {
2721         struct rocker_group_tbl_entry *found;
2722
2723         hash_for_each_possible(rocker->group_tbl, found,
2724                                entry, match->group_id) {
2725                 if (found->group_id == match->group_id)
2726                         return found;
2727         }
2728
2729         return NULL;
2730 }
2731
2732 static void rocker_group_tbl_entry_free(struct rocker_port *rocker_port,
2733                                         enum switchdev_trans trans,
2734                                         struct rocker_group_tbl_entry *entry)
2735 {
2736         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2737         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2738         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2739                 rocker_port_kfree(rocker_port, trans, entry->group_ids);
2740                 break;
2741         default:
2742                 break;
2743         }
2744         rocker_port_kfree(rocker_port, trans, entry);
2745 }
2746
2747 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2748                                 enum switchdev_trans trans,
2749                                 struct rocker_group_tbl_entry *match)
2750 {
2751         struct rocker *rocker = rocker_port->rocker;
2752         struct rocker_group_tbl_entry *found;
2753         unsigned long flags;
2754
2755         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2756
2757         found = rocker_group_tbl_find(rocker, match);
2758
2759         if (found) {
2760                 if (trans != SWITCHDEV_TRANS_PREPARE)
2761                         hash_del(&found->entry);
2762                 rocker_group_tbl_entry_free(rocker_port, trans, found);
2763                 found = match;
2764                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2765         } else {
2766                 found = match;
2767                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2768         }
2769
2770         if (trans != SWITCHDEV_TRANS_PREPARE)
2771                 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2772
2773         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2774
2775         return rocker_cmd_exec(rocker, rocker_port, trans,
2776                                rocker_cmd_group_tbl_add,
2777                                found, NULL, NULL);
2778 }
2779
2780 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2781                                 enum switchdev_trans trans,
2782                                 struct rocker_group_tbl_entry *match)
2783 {
2784         struct rocker *rocker = rocker_port->rocker;
2785         struct rocker_group_tbl_entry *found;
2786         unsigned long flags;
2787         int err = 0;
2788
2789         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2790
2791         found = rocker_group_tbl_find(rocker, match);
2792
2793         if (found) {
2794                 if (trans != SWITCHDEV_TRANS_PREPARE)
2795                         hash_del(&found->entry);
2796                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2797         }
2798
2799         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2800
2801         rocker_group_tbl_entry_free(rocker_port, trans, match);
2802
2803         if (found) {
2804                 err = rocker_cmd_exec(rocker, rocker_port, trans,
2805                                       rocker_cmd_group_tbl_del,
2806                                       found, NULL, NULL);
2807                 rocker_group_tbl_entry_free(rocker_port, trans, found);
2808         }
2809
2810         return err;
2811 }
2812
2813 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2814                                enum switchdev_trans trans, int flags,
2815                                struct rocker_group_tbl_entry *entry)
2816 {
2817         if (flags & ROCKER_OP_FLAG_REMOVE)
2818                 return rocker_group_tbl_del(rocker_port, trans, entry);
2819         else
2820                 return rocker_group_tbl_add(rocker_port, trans, entry);
2821 }
2822
2823 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2824                                      enum switchdev_trans trans, int flags,
2825                                      __be16 vlan_id, u32 out_pport,
2826                                      int pop_vlan)
2827 {
2828         struct rocker_group_tbl_entry *entry;
2829
2830         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2831         if (!entry)
2832                 return -ENOMEM;
2833
2834         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2835         entry->l2_interface.pop_vlan = pop_vlan;
2836
2837         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2838 }
2839
2840 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2841                                    enum switchdev_trans trans,
2842                                    int flags, u8 group_count,
2843                                    u32 *group_ids, u32 group_id)
2844 {
2845         struct rocker_group_tbl_entry *entry;
2846
2847         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2848         if (!entry)
2849                 return -ENOMEM;
2850
2851         entry->group_id = group_id;
2852         entry->group_count = group_count;
2853
2854         entry->group_ids = rocker_port_kcalloc(rocker_port, trans, group_count,
2855                                                sizeof(u32));
2856         if (!entry->group_ids) {
2857                 rocker_port_kfree(rocker_port, trans, entry);
2858                 return -ENOMEM;
2859         }
2860         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2861
2862         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2863 }
2864
2865 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2866                                  enum switchdev_trans trans, int flags,
2867                                  __be16 vlan_id, u8 group_count,
2868                                  u32 *group_ids, u32 group_id)
2869 {
2870         return rocker_group_l2_fan_out(rocker_port, trans, flags,
2871                                        group_count, group_ids,
2872                                        group_id);
2873 }
2874
2875 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2876                                    enum switchdev_trans trans, int flags,
2877                                    u32 index, u8 *src_mac, u8 *dst_mac,
2878                                    __be16 vlan_id, bool ttl_check, u32 pport)
2879 {
2880         struct rocker_group_tbl_entry *entry;
2881
2882         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2883         if (!entry)
2884                 return -ENOMEM;
2885
2886         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2887         if (src_mac)
2888                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2889         if (dst_mac)
2890                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2891         entry->l3_unicast.vlan_id = vlan_id;
2892         entry->l3_unicast.ttl_check = ttl_check;
2893         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2894
2895         return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2896 }
2897
2898 static struct rocker_neigh_tbl_entry *
2899         rocker_neigh_tbl_find(struct rocker *rocker, __be32 ip_addr)
2900 {
2901         struct rocker_neigh_tbl_entry *found;
2902
2903         hash_for_each_possible(rocker->neigh_tbl, found,
2904                                entry, be32_to_cpu(ip_addr))
2905                 if (found->ip_addr == ip_addr)
2906                         return found;
2907
2908         return NULL;
2909 }
2910
2911 static void _rocker_neigh_add(struct rocker *rocker,
2912                               struct rocker_neigh_tbl_entry *entry)
2913 {
2914         entry->index = rocker->neigh_tbl_next_index++;
2915         entry->ref_count++;
2916         hash_add(rocker->neigh_tbl, &entry->entry,
2917                  be32_to_cpu(entry->ip_addr));
2918 }
2919
2920 static void _rocker_neigh_del(struct rocker_port *rocker_port,
2921                               enum switchdev_trans trans,
2922                               struct rocker_neigh_tbl_entry *entry)
2923 {
2924         if (--entry->ref_count == 0) {
2925                 hash_del(&entry->entry);
2926                 rocker_port_kfree(rocker_port, trans, entry);
2927         }
2928 }
2929
2930 static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
2931                                  u8 *eth_dst, bool ttl_check)
2932 {
2933         if (eth_dst) {
2934                 ether_addr_copy(entry->eth_dst, eth_dst);
2935                 entry->ttl_check = ttl_check;
2936         } else {
2937                 entry->ref_count++;
2938         }
2939 }
2940
2941 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2942                                   enum switchdev_trans trans,
2943                                   int flags, __be32 ip_addr, u8 *eth_dst)
2944 {
2945         struct rocker *rocker = rocker_port->rocker;
2946         struct rocker_neigh_tbl_entry *entry;
2947         struct rocker_neigh_tbl_entry *found;
2948         unsigned long lock_flags;
2949         __be16 eth_type = htons(ETH_P_IP);
2950         enum rocker_of_dpa_table_id goto_tbl =
2951                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2952         u32 group_id;
2953         u32 priority = 0;
2954         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2955         bool updating;
2956         bool removing;
2957         int err = 0;
2958
2959         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
2960         if (!entry)
2961                 return -ENOMEM;
2962
2963         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2964
2965         found = rocker_neigh_tbl_find(rocker, ip_addr);
2966
2967         updating = found && adding;
2968         removing = found && !adding;
2969         adding = !found && adding;
2970
2971         if (adding) {
2972                 entry->ip_addr = ip_addr;
2973                 entry->dev = rocker_port->dev;
2974                 ether_addr_copy(entry->eth_dst, eth_dst);
2975                 entry->ttl_check = true;
2976                 _rocker_neigh_add(rocker, entry);
2977         } else if (removing) {
2978                 memcpy(entry, found, sizeof(*entry));
2979                 _rocker_neigh_del(rocker_port, trans, found);
2980         } else if (updating) {
2981                 _rocker_neigh_update(found, eth_dst, true);
2982                 memcpy(entry, found, sizeof(*entry));
2983         } else {
2984                 err = -ENOENT;
2985         }
2986
2987         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2988
2989         if (err)
2990                 goto err_out;
2991
2992         /* For each active neighbor, we have an L3 unicast group and
2993          * a /32 route to the neighbor, which uses the L3 unicast
2994          * group.  The L3 unicast group can also be referred to by
2995          * other routes' nexthops.
2996          */
2997
2998         err = rocker_group_l3_unicast(rocker_port, trans, flags,
2999                                       entry->index,
3000                                       rocker_port->dev->dev_addr,
3001                                       entry->eth_dst,
3002                                       rocker_port->internal_vlan_id,
3003                                       entry->ttl_check,
3004                                       rocker_port->pport);
3005         if (err) {
3006                 netdev_err(rocker_port->dev,
3007                            "Error (%d) L3 unicast group index %d\n",
3008                            err, entry->index);
3009                 goto err_out;
3010         }
3011
3012         if (adding || removing) {
3013                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
3014                 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
3015                                                      eth_type, ip_addr,
3016                                                      inet_make_mask(32),
3017                                                      priority, goto_tbl,
3018                                                      group_id, flags);
3019
3020                 if (err)
3021                         netdev_err(rocker_port->dev,
3022                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
3023                                    err, &entry->ip_addr, group_id);
3024         }
3025
3026 err_out:
3027         if (!adding)
3028                 rocker_port_kfree(rocker_port, trans, entry);
3029
3030         return err;
3031 }
3032
3033 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
3034                                     enum switchdev_trans trans, __be32 ip_addr)
3035 {
3036         struct net_device *dev = rocker_port->dev;
3037         struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
3038         int err = 0;
3039
3040         if (!n)
3041                 n = neigh_create(&arp_tbl, &ip_addr, dev);
3042         if (!n)
3043                 return -ENOMEM;
3044
3045         /* If the neigh is already resolved, then go ahead and
3046          * install the entry, otherwise start the ARP process to
3047          * resolve the neigh.
3048          */
3049
3050         if (n->nud_state & NUD_VALID)
3051                 err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
3052                                              ip_addr, n->ha);
3053         else
3054                 neigh_event_send(n, NULL);
3055
3056         return err;
3057 }
3058
3059 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
3060                                enum switchdev_trans trans, int flags,
3061                                __be32 ip_addr, u32 *index)
3062 {
3063         struct rocker *rocker = rocker_port->rocker;
3064         struct rocker_neigh_tbl_entry *entry;
3065         struct rocker_neigh_tbl_entry *found;
3066         unsigned long lock_flags;
3067         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3068         bool updating;
3069         bool removing;
3070         bool resolved = true;
3071         int err = 0;
3072
3073         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
3074         if (!entry)
3075                 return -ENOMEM;
3076
3077         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3078
3079         found = rocker_neigh_tbl_find(rocker, ip_addr);
3080         if (found)
3081                 *index = found->index;
3082
3083         updating = found && adding;
3084         removing = found && !adding;
3085         adding = !found && adding;
3086
3087         if (adding) {
3088                 entry->ip_addr = ip_addr;
3089                 entry->dev = rocker_port->dev;
3090                 _rocker_neigh_add(rocker, entry);
3091                 *index = entry->index;
3092                 resolved = false;
3093         } else if (removing) {
3094                 _rocker_neigh_del(rocker_port, trans, found);
3095         } else if (updating) {
3096                 _rocker_neigh_update(found, NULL, false);
3097                 resolved = !is_zero_ether_addr(found->eth_dst);
3098         } else {
3099                 err = -ENOENT;
3100         }
3101
3102         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3103
3104         if (!adding)
3105                 rocker_port_kfree(rocker_port, trans, entry);
3106
3107         if (err)
3108                 return err;
3109
3110         /* Resolved means neigh ip_addr is resolved to neigh mac. */
3111
3112         if (!resolved)
3113                 err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
3114
3115         return err;
3116 }
3117
3118 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3119                                         enum switchdev_trans trans,
3120                                         int flags, __be16 vlan_id)
3121 {
3122         struct rocker_port *p;
3123         struct rocker *rocker = rocker_port->rocker;
3124         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3125         u32 *group_ids;
3126         u8 group_count = 0;
3127         int err = 0;
3128         int i;
3129
3130         group_ids = rocker_port_kcalloc(rocker_port, trans, rocker->port_count,
3131                                         sizeof(u32));
3132         if (!group_ids)
3133                 return -ENOMEM;
3134
3135         /* Adjust the flood group for this VLAN.  The flood group
3136          * references an L2 interface group for each port in this
3137          * VLAN.
3138          */
3139
3140         for (i = 0; i < rocker->port_count; i++) {
3141                 p = rocker->ports[i];
3142                 if (!rocker_port_is_bridged(p))
3143                         continue;
3144                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3145                         group_ids[group_count++] =
3146                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3147                 }
3148         }
3149
3150         /* If there are no bridged ports in this VLAN, we're done */
3151         if (group_count == 0)
3152                 goto no_ports_in_vlan;
3153
3154         err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
3155                                     group_count, group_ids, group_id);
3156         if (err)
3157                 netdev_err(rocker_port->dev,
3158                            "Error (%d) port VLAN l2 flood group\n", err);
3159
3160 no_ports_in_vlan:
3161         rocker_port_kfree(rocker_port, trans, group_ids);
3162         return err;
3163 }
3164
3165 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3166                                       enum switchdev_trans trans, int flags,
3167                                       __be16 vlan_id, bool pop_vlan)
3168 {
3169         struct rocker *rocker = rocker_port->rocker;
3170         struct rocker_port *p;
3171         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3172         u32 out_pport;
3173         int ref = 0;
3174         int err;
3175         int i;
3176
3177         /* An L2 interface group for this port in this VLAN, but
3178          * only when port STP state is LEARNING|FORWARDING.
3179          */
3180
3181         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3182             rocker_port->stp_state == BR_STATE_FORWARDING) {
3183                 out_pport = rocker_port->pport;
3184                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3185                                                 vlan_id, out_pport, pop_vlan);
3186                 if (err) {
3187                         netdev_err(rocker_port->dev,
3188                                    "Error (%d) port VLAN l2 group for pport %d\n",
3189                                    err, out_pport);
3190                         return err;
3191                 }
3192         }
3193
3194         /* An L2 interface group for this VLAN to CPU port.
3195          * Add when first port joins this VLAN and destroy when
3196          * last port leaves this VLAN.
3197          */
3198
3199         for (i = 0; i < rocker->port_count; i++) {
3200                 p = rocker->ports[i];
3201                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
3202                         ref++;
3203         }
3204
3205         if ((!adding || ref != 1) && (adding || ref != 0))
3206                 return 0;
3207
3208         out_pport = 0;
3209         err = rocker_group_l2_interface(rocker_port, trans, flags,
3210                                         vlan_id, out_pport, pop_vlan);
3211         if (err) {
3212                 netdev_err(rocker_port->dev,
3213                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3214                 return err;
3215         }
3216
3217         return 0;
3218 }
3219
3220 static struct rocker_ctrl {
3221         const u8 *eth_dst;
3222         const u8 *eth_dst_mask;
3223         __be16 eth_type;
3224         bool acl;
3225         bool bridge;
3226         bool term;
3227         bool copy_to_cpu;
3228 } rocker_ctrls[] = {
3229         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3230                 /* pass link local multicast pkts up to CPU for filtering */
3231                 .eth_dst = ll_mac,
3232                 .eth_dst_mask = ll_mask,
3233                 .acl = true,
3234         },
3235         [ROCKER_CTRL_LOCAL_ARP] = {
3236                 /* pass local ARP pkts up to CPU */
3237                 .eth_dst = zero_mac,
3238                 .eth_dst_mask = zero_mac,
3239                 .eth_type = htons(ETH_P_ARP),
3240                 .acl = true,
3241         },
3242         [ROCKER_CTRL_IPV4_MCAST] = {
3243                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3244                 .eth_dst = ipv4_mcast,
3245                 .eth_dst_mask = ipv4_mask,
3246                 .eth_type = htons(ETH_P_IP),
3247                 .term  = true,
3248                 .copy_to_cpu = true,
3249         },
3250         [ROCKER_CTRL_IPV6_MCAST] = {
3251                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3252                 .eth_dst = ipv6_mcast,
3253                 .eth_dst_mask = ipv6_mask,
3254                 .eth_type = htons(ETH_P_IPV6),
3255                 .term  = true,
3256                 .copy_to_cpu = true,
3257         },
3258         [ROCKER_CTRL_DFLT_BRIDGING] = {
3259                 /* flood any pkts on vlan */
3260                 .bridge = true,
3261                 .copy_to_cpu = true,
3262         },
3263 };
3264
3265 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3266                                      enum switchdev_trans trans, int flags,
3267                                      struct rocker_ctrl *ctrl, __be16 vlan_id)
3268 {
3269         u32 in_pport = rocker_port->pport;
3270         u32 in_pport_mask = 0xffffffff;
3271         u32 out_pport = 0;
3272         u8 *eth_src = NULL;
3273         u8 *eth_src_mask = NULL;
3274         __be16 vlan_id_mask = htons(0xffff);
3275         u8 ip_proto = 0;
3276         u8 ip_proto_mask = 0;
3277         u8 ip_tos = 0;
3278         u8 ip_tos_mask = 0;
3279         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3280         int err;
3281
3282         err = rocker_flow_tbl_acl(rocker_port, trans, flags,
3283                                   in_pport, in_pport_mask,
3284                                   eth_src, eth_src_mask,
3285                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3286                                   ctrl->eth_type,
3287                                   vlan_id, vlan_id_mask,
3288                                   ip_proto, ip_proto_mask,
3289                                   ip_tos, ip_tos_mask,
3290                                   group_id);
3291
3292         if (err)
3293                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3294
3295         return err;
3296 }
3297
3298 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3299                                         enum switchdev_trans trans, int flags,
3300                                         struct rocker_ctrl *ctrl,
3301                                         __be16 vlan_id)
3302 {
3303         enum rocker_of_dpa_table_id goto_tbl =
3304                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3305         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3306         u32 tunnel_id = 0;
3307         int err;
3308
3309         if (!rocker_port_is_bridged(rocker_port))
3310                 return 0;
3311
3312         err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
3313                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3314                                      vlan_id, tunnel_id,
3315                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3316
3317         if (err)
3318                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3319
3320         return err;
3321 }
3322
3323 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3324                                       enum switchdev_trans trans, int flags,
3325                                       struct rocker_ctrl *ctrl, __be16 vlan_id)
3326 {
3327         u32 in_pport_mask = 0xffffffff;
3328         __be16 vlan_id_mask = htons(0xffff);
3329         int err;
3330
3331         if (ntohs(vlan_id) == 0)
3332                 vlan_id = rocker_port->internal_vlan_id;
3333
3334         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3335                                        rocker_port->pport, in_pport_mask,
3336                                        ctrl->eth_type, ctrl->eth_dst,
3337                                        ctrl->eth_dst_mask, vlan_id,
3338                                        vlan_id_mask, ctrl->copy_to_cpu,
3339                                        flags);
3340
3341         if (err)
3342                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3343
3344         return err;
3345 }
3346
3347 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
3348                                  enum switchdev_trans trans, int flags,
3349                                  struct rocker_ctrl *ctrl, __be16 vlan_id)
3350 {
3351         if (ctrl->acl)
3352                 return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
3353                                                  ctrl, vlan_id);
3354         if (ctrl->bridge)
3355                 return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
3356                                                     ctrl, vlan_id);
3357
3358         if (ctrl->term)
3359                 return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
3360                                                   ctrl, vlan_id);
3361
3362         return -EOPNOTSUPP;
3363 }
3364
3365 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3366                                      enum switchdev_trans trans, int flags,
3367                                      __be16 vlan_id)
3368 {
3369         int err = 0;
3370         int i;
3371
3372         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3373                 if (rocker_port->ctrls[i]) {
3374                         err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3375                                                     &rocker_ctrls[i], vlan_id);
3376                         if (err)
3377                                 return err;
3378                 }
3379         }
3380
3381         return err;
3382 }
3383
3384 static int rocker_port_ctrl(struct rocker_port *rocker_port,
3385                             enum switchdev_trans trans, int flags,
3386                             struct rocker_ctrl *ctrl)
3387 {
3388         u16 vid;
3389         int err = 0;
3390
3391         for (vid = 1; vid < VLAN_N_VID; vid++) {
3392                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3393                         continue;
3394                 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3395                                             ctrl, htons(vid));
3396                 if (err)
3397                         break;
3398         }
3399
3400         return err;
3401 }
3402
3403 static int rocker_port_vlan(struct rocker_port *rocker_port,
3404                             enum switchdev_trans trans, int flags, u16 vid)
3405 {
3406         enum rocker_of_dpa_table_id goto_tbl =
3407                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3408         u32 in_pport = rocker_port->pport;
3409         __be16 vlan_id = htons(vid);
3410         __be16 vlan_id_mask = htons(0xffff);
3411         __be16 internal_vlan_id;
3412         bool untagged;
3413         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3414         int err;
3415
3416         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3417
3418         if (adding && test_bit(ntohs(internal_vlan_id),
3419                                rocker_port->vlan_bitmap))
3420                         return 0; /* already added */
3421         else if (!adding && !test_bit(ntohs(internal_vlan_id),
3422                                       rocker_port->vlan_bitmap))
3423                         return 0; /* already removed */
3424
3425         change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3426
3427         if (adding) {
3428                 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3429                                                 internal_vlan_id);
3430                 if (err) {
3431                         netdev_err(rocker_port->dev,
3432                                    "Error (%d) port ctrl vlan add\n", err);
3433                         goto err_out;
3434                 }
3435         }
3436
3437         err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3438                                          internal_vlan_id, untagged);
3439         if (err) {
3440                 netdev_err(rocker_port->dev,
3441                            "Error (%d) port VLAN l2 groups\n", err);
3442                 goto err_out;
3443         }
3444
3445         err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3446                                            internal_vlan_id);
3447         if (err) {
3448                 netdev_err(rocker_port->dev,
3449                            "Error (%d) port VLAN l2 flood group\n", err);
3450                 goto err_out;
3451         }
3452
3453         err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3454                                    in_pport, vlan_id, vlan_id_mask,
3455                                    goto_tbl, untagged, internal_vlan_id);
3456         if (err)
3457                 netdev_err(rocker_port->dev,
3458                            "Error (%d) port VLAN table\n", err);
3459
3460 err_out:
3461         if (trans == SWITCHDEV_TRANS_PREPARE)
3462                 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3463
3464         return err;
3465 }
3466
3467 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3468                               enum switchdev_trans trans, int flags)
3469 {
3470         enum rocker_of_dpa_table_id goto_tbl;
3471         u32 in_pport;
3472         u32 in_pport_mask;
3473         int err;
3474
3475         /* Normal Ethernet Frames.  Matches pkts from any local physical
3476          * ports.  Goto VLAN tbl.
3477          */
3478
3479         in_pport = 0;
3480         in_pport_mask = 0xffff0000;
3481         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3482
3483         err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3484                                       in_pport, in_pport_mask,
3485                                       goto_tbl);
3486         if (err)
3487                 netdev_err(rocker_port->dev,
3488                            "Error (%d) ingress port table entry\n", err);
3489
3490         return err;
3491 }
3492
3493 struct rocker_fdb_learn_work {
3494         struct work_struct work;
3495         struct rocker_port *rocker_port;
3496         enum switchdev_trans trans;
3497         int flags;
3498         u8 addr[ETH_ALEN];
3499         u16 vid;
3500 };
3501
3502 static void rocker_port_fdb_learn_work(struct work_struct *work)
3503 {
3504         struct rocker_fdb_learn_work *lw =
3505                 container_of(work, struct rocker_fdb_learn_work, work);
3506         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3507         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3508         struct switchdev_notifier_fdb_info info;
3509
3510         info.addr = lw->addr;
3511         info.vid = lw->vid;
3512
3513         if (learned && removing)
3514                 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3515                                          lw->rocker_port->dev, &info.info);
3516         else if (learned && !removing)
3517                 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3518                                          lw->rocker_port->dev, &info.info);
3519
3520         rocker_port_kfree(lw->rocker_port, lw->trans, work);
3521 }
3522
3523 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3524                                  enum switchdev_trans trans, int flags,
3525                                  const u8 *addr, __be16 vlan_id)
3526 {
3527         struct rocker_fdb_learn_work *lw;
3528         enum rocker_of_dpa_table_id goto_tbl =
3529                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3530         u32 out_pport = rocker_port->pport;
3531         u32 tunnel_id = 0;
3532         u32 group_id = ROCKER_GROUP_NONE;
3533         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3534         bool copy_to_cpu = false;
3535         int err;
3536
3537         if (rocker_port_is_bridged(rocker_port))
3538                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3539
3540         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3541                 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3542                                              NULL, vlan_id, tunnel_id, goto_tbl,
3543                                              group_id, copy_to_cpu);
3544                 if (err)
3545                         return err;
3546         }
3547
3548         if (!syncing)
3549                 return 0;
3550
3551         if (!rocker_port_is_bridged(rocker_port))
3552                 return 0;
3553
3554         lw = rocker_port_kzalloc(rocker_port, trans, sizeof(*lw));
3555         if (!lw)
3556                 return -ENOMEM;
3557
3558         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3559
3560         lw->rocker_port = rocker_port;
3561         lw->trans = trans;
3562         lw->flags = flags;
3563         ether_addr_copy(lw->addr, addr);
3564         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3565
3566         if (trans == SWITCHDEV_TRANS_PREPARE)
3567                 rocker_port_kfree(rocker_port, trans, lw);
3568         else
3569                 schedule_work(&lw->work);
3570
3571         return 0;
3572 }
3573
3574 static struct rocker_fdb_tbl_entry *
3575 rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3576 {
3577         struct rocker_fdb_tbl_entry *found;
3578
3579         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3580                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3581                         return found;
3582
3583         return NULL;
3584 }
3585
3586 static int rocker_port_fdb(struct rocker_port *rocker_port,
3587                            enum switchdev_trans trans,
3588                            const unsigned char *addr,
3589                            __be16 vlan_id, int flags)
3590 {
3591         struct rocker *rocker = rocker_port->rocker;
3592         struct rocker_fdb_tbl_entry *fdb;
3593         struct rocker_fdb_tbl_entry *found;
3594         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3595         unsigned long lock_flags;
3596
3597         fdb = rocker_port_kzalloc(rocker_port, trans, sizeof(*fdb));
3598         if (!fdb)
3599                 return -ENOMEM;
3600
3601         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3602         fdb->key.pport = rocker_port->pport;
3603         ether_addr_copy(fdb->key.addr, addr);
3604         fdb->key.vlan_id = vlan_id;
3605         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3606
3607         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3608
3609         found = rocker_fdb_tbl_find(rocker, fdb);
3610
3611         if (removing && found) {
3612                 rocker_port_kfree(rocker_port, trans, fdb);
3613                 hash_del(&found->entry);
3614         } else if (!removing && !found) {
3615                 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3616         }
3617
3618         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3619
3620         /* Check if adding and already exists, or removing and can't find */
3621         if (!found != !removing) {
3622                 rocker_port_kfree(rocker_port, trans, fdb);
3623                 if (!found && removing)
3624                         return 0;
3625                 /* Refreshing existing to update aging timers */
3626                 flags |= ROCKER_OP_FLAG_REFRESH;
3627         }
3628
3629         return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3630 }
3631
3632 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3633                                  enum switchdev_trans trans)
3634 {
3635         struct rocker *rocker = rocker_port->rocker;
3636         struct rocker_fdb_tbl_entry *found;
3637         unsigned long lock_flags;
3638         int flags = ROCKER_OP_FLAG_REMOVE;
3639         struct hlist_node *tmp;
3640         int bkt;
3641         int err = 0;
3642
3643         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3644             rocker_port->stp_state == BR_STATE_FORWARDING)
3645                 return 0;
3646
3647         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3648
3649         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3650                 if (found->key.pport != rocker_port->pport)
3651                         continue;
3652                 if (!found->learned)
3653                         continue;
3654                 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3655                                             found->key.addr,
3656                                             found->key.vlan_id);
3657                 if (err)
3658                         goto err_out;
3659                 hash_del(&found->entry);
3660         }
3661
3662 err_out:
3663         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3664
3665         return err;
3666 }
3667
3668 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3669                                   enum switchdev_trans trans, int flags,
3670                                   __be16 vlan_id)
3671 {
3672         u32 in_pport_mask = 0xffffffff;
3673         __be16 eth_type;
3674         const u8 *dst_mac_mask = ff_mac;
3675         __be16 vlan_id_mask = htons(0xffff);
3676         bool copy_to_cpu = false;
3677         int err;
3678
3679         if (ntohs(vlan_id) == 0)
3680                 vlan_id = rocker_port->internal_vlan_id;
3681
3682         eth_type = htons(ETH_P_IP);
3683         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3684                                        rocker_port->pport, in_pport_mask,
3685                                        eth_type, rocker_port->dev->dev_addr,
3686                                        dst_mac_mask, vlan_id, vlan_id_mask,
3687                                        copy_to_cpu, flags);
3688         if (err)
3689                 return err;
3690
3691         eth_type = htons(ETH_P_IPV6);
3692         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3693                                        rocker_port->pport, in_pport_mask,
3694                                        eth_type, rocker_port->dev->dev_addr,
3695                                        dst_mac_mask, vlan_id, vlan_id_mask,
3696                                        copy_to_cpu, flags);
3697
3698         return err;
3699 }
3700
3701 static int rocker_port_fwding(struct rocker_port *rocker_port,
3702                               enum switchdev_trans trans)
3703 {
3704         bool pop_vlan;
3705         u32 out_pport;
3706         __be16 vlan_id;
3707         u16 vid;
3708         int flags = 0;
3709         int err;
3710
3711         /* Port will be forwarding-enabled if its STP state is LEARNING
3712          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3713          * port STP state.  Use L2 interface group on port VLANs as a way
3714          * to toggle port forwarding: if forwarding is disabled, L2
3715          * interface group will not exist.
3716          */
3717
3718         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3719             rocker_port->stp_state != BR_STATE_FORWARDING)
3720                 flags |= ROCKER_OP_FLAG_REMOVE;
3721
3722         out_pport = rocker_port->pport;
3723         for (vid = 1; vid < VLAN_N_VID; vid++) {
3724                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3725                         continue;
3726                 vlan_id = htons(vid);
3727                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3728                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3729                                                 vlan_id, out_pport, pop_vlan);
3730                 if (err) {
3731                         netdev_err(rocker_port->dev,
3732                                    "Error (%d) port VLAN l2 group for pport %d\n",
3733                                    err, out_pport);
3734                         return err;
3735                 }
3736         }
3737
3738         return 0;
3739 }
3740
3741 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3742                                   enum switchdev_trans trans, u8 state)
3743 {
3744         bool want[ROCKER_CTRL_MAX] = { 0, };
3745         bool prev_ctrls[ROCKER_CTRL_MAX];
3746         u8 prev_state;
3747         int flags;
3748         int err;
3749         int i;
3750
3751         if (trans == SWITCHDEV_TRANS_PREPARE) {
3752                 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3753                 prev_state = rocker_port->stp_state;
3754         }
3755
3756         if (rocker_port->stp_state == state)
3757                 return 0;
3758
3759         rocker_port->stp_state = state;
3760
3761         switch (state) {
3762         case BR_STATE_DISABLED:
3763                 /* port is completely disabled */
3764                 break;
3765         case BR_STATE_LISTENING:
3766         case BR_STATE_BLOCKING:
3767                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3768                 break;
3769         case BR_STATE_LEARNING:
3770         case BR_STATE_FORWARDING:
3771                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3772                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3773                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3774                 if (rocker_port_is_bridged(rocker_port))
3775                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3776                 else
3777                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3778                 break;
3779         }
3780
3781         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3782                 if (want[i] != rocker_port->ctrls[i]) {
3783                         flags = (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3784                         err = rocker_port_ctrl(rocker_port, trans, flags,
3785                                                &rocker_ctrls[i]);
3786                         if (err)
3787                                 goto err_out;
3788                         rocker_port->ctrls[i] = want[i];
3789                 }
3790         }
3791
3792         err = rocker_port_fdb_flush(rocker_port, trans);
3793         if (err)
3794                 goto err_out;
3795
3796         err = rocker_port_fwding(rocker_port, trans);
3797
3798 err_out:
3799         if (trans == SWITCHDEV_TRANS_PREPARE) {
3800                 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3801                 rocker_port->stp_state = prev_state;
3802         }
3803
3804         return err;
3805 }
3806
3807 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
3808                                   enum switchdev_trans trans)
3809 {
3810         if (rocker_port_is_bridged(rocker_port))
3811                 /* bridge STP will enable port */
3812                 return 0;
3813
3814         /* port is not bridged, so simulate going to FORWARDING state */
3815         return rocker_port_stp_update(rocker_port, trans, BR_STATE_FORWARDING);
3816 }
3817
3818 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
3819                                    enum switchdev_trans trans)
3820 {
3821         if (rocker_port_is_bridged(rocker_port))
3822                 /* bridge STP will disable port */
3823                 return 0;
3824
3825         /* port is not bridged, so simulate going to DISABLED state */
3826         return rocker_port_stp_update(rocker_port, trans, BR_STATE_DISABLED);
3827 }
3828
3829 static struct rocker_internal_vlan_tbl_entry *
3830 rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3831 {
3832         struct rocker_internal_vlan_tbl_entry *found;
3833
3834         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3835                                entry, ifindex) {
3836                 if (found->ifindex == ifindex)
3837                         return found;
3838         }
3839
3840         return NULL;
3841 }
3842
3843 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3844                                                enum switchdev_trans trans,
3845                                                int ifindex)
3846 {
3847         struct rocker *rocker = rocker_port->rocker;
3848         struct rocker_internal_vlan_tbl_entry *entry;
3849         struct rocker_internal_vlan_tbl_entry *found;
3850         unsigned long lock_flags;
3851         int i;
3852
3853         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
3854         if (!entry)
3855                 return 0;
3856
3857         entry->ifindex = ifindex;
3858
3859         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3860
3861         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3862         if (found) {
3863                 rocker_port_kfree(rocker_port, trans, entry);
3864                 goto found;
3865         }
3866
3867         found = entry;
3868         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3869
3870         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3871                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3872                         continue;
3873                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3874                 goto found;
3875         }
3876
3877         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3878
3879 found:
3880         found->ref_count++;
3881         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3882
3883         return found->vlan_id;
3884 }
3885
3886 static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3887                                              enum switchdev_trans trans,
3888                                              int ifindex)
3889 {
3890         struct rocker *rocker = rocker_port->rocker;
3891         struct rocker_internal_vlan_tbl_entry *found;
3892         unsigned long lock_flags;
3893         unsigned long bit;
3894
3895         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3896
3897         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3898         if (!found) {
3899                 netdev_err(rocker_port->dev,
3900                            "ifindex (%d) not found in internal VLAN tbl\n",
3901                            ifindex);
3902                 goto not_found;
3903         }
3904
3905         if (--found->ref_count <= 0) {
3906                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3907                 clear_bit(bit, rocker->internal_vlan_bitmap);
3908                 hash_del(&found->entry);
3909                 rocker_port_kfree(rocker_port, trans, found);
3910         }
3911
3912 not_found:
3913         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3914 }
3915
3916 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
3917                                 enum switchdev_trans trans, __be32 dst,
3918                                 int dst_len, struct fib_info *fi, u32 tb_id,
3919                                 int flags)
3920 {
3921         struct fib_nh *nh;
3922         __be16 eth_type = htons(ETH_P_IP);
3923         __be32 dst_mask = inet_make_mask(dst_len);
3924         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3925         u32 priority = fi->fib_priority;
3926         enum rocker_of_dpa_table_id goto_tbl =
3927                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3928         u32 group_id;
3929         bool nh_on_port;
3930         bool has_gw;
3931         u32 index;
3932         int err;
3933
3934         /* XXX support ECMP */
3935
3936         nh = fi->fib_nh;
3937         nh_on_port = (fi->fib_dev == rocker_port->dev);
3938         has_gw = !!nh->nh_gw;
3939
3940         if (has_gw && nh_on_port) {
3941                 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
3942                                           nh->nh_gw, &index);
3943                 if (err)
3944                         return err;
3945
3946                 group_id = ROCKER_GROUP_L3_UNICAST(index);
3947         } else {
3948                 /* Send to CPU for processing */
3949                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3950         }
3951
3952         err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
3953                                              dst_mask, priority, goto_tbl,
3954                                              group_id, flags);
3955         if (err)
3956                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3957                            err, &dst);
3958
3959         return err;
3960 }
3961
3962 /*****************
3963  * Net device ops
3964  *****************/
3965
3966 static int rocker_port_open(struct net_device *dev)
3967 {
3968         struct rocker_port *rocker_port = netdev_priv(dev);
3969         int err;
3970
3971         err = rocker_port_dma_rings_init(rocker_port);
3972         if (err)
3973                 return err;
3974
3975         err = request_irq(rocker_msix_tx_vector(rocker_port),
3976                           rocker_tx_irq_handler, 0,
3977                           rocker_driver_name, rocker_port);
3978         if (err) {
3979                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3980                 goto err_request_tx_irq;
3981         }
3982
3983         err = request_irq(rocker_msix_rx_vector(rocker_port),
3984                           rocker_rx_irq_handler, 0,
3985                           rocker_driver_name, rocker_port);
3986         if (err) {
3987                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3988                 goto err_request_rx_irq;
3989         }
3990
3991         err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE);
3992         if (err)
3993                 goto err_fwd_enable;
3994
3995         napi_enable(&rocker_port->napi_tx);
3996         napi_enable(&rocker_port->napi_rx);
3997         rocker_port_set_enable(rocker_port, true);
3998         netif_start_queue(dev);
3999         return 0;
4000
4001 err_fwd_enable:
4002         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4003 err_request_rx_irq:
4004         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4005 err_request_tx_irq:
4006         rocker_port_dma_rings_fini(rocker_port);
4007         return err;
4008 }
4009
4010 static int rocker_port_stop(struct net_device *dev)
4011 {
4012         struct rocker_port *rocker_port = netdev_priv(dev);
4013
4014         netif_stop_queue(dev);
4015         rocker_port_set_enable(rocker_port, false);
4016         napi_disable(&rocker_port->napi_rx);
4017         napi_disable(&rocker_port->napi_tx);
4018         rocker_port_fwd_disable(rocker_port, SWITCHDEV_TRANS_NONE);
4019         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4020         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4021         rocker_port_dma_rings_fini(rocker_port);
4022
4023         return 0;
4024 }
4025
4026 static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
4027                                        struct rocker_desc_info *desc_info)
4028 {
4029         struct rocker *rocker = rocker_port->rocker;
4030         struct pci_dev *pdev = rocker->pdev;
4031         struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4032         struct rocker_tlv *attr;
4033         int rem;
4034
4035         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4036         if (!attrs[ROCKER_TLV_TX_FRAGS])
4037                 return;
4038         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4039                 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4040                 dma_addr_t dma_handle;
4041                 size_t len;
4042
4043                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4044                         continue;
4045                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4046                                         attr);
4047                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4048                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4049                         continue;
4050                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4051                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4052                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4053         }
4054 }
4055
4056 static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
4057                                        struct rocker_desc_info *desc_info,
4058                                        char *buf, size_t buf_len)
4059 {
4060         struct rocker *rocker = rocker_port->rocker;
4061         struct pci_dev *pdev = rocker->pdev;
4062         dma_addr_t dma_handle;
4063         struct rocker_tlv *frag;
4064
4065         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4066         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4067                 if (net_ratelimit())
4068                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4069                 return -EIO;
4070         }
4071         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4072         if (!frag)
4073                 goto unmap_frag;
4074         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4075                                dma_handle))
4076                 goto nest_cancel;
4077         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4078                                buf_len))
4079                 goto nest_cancel;
4080         rocker_tlv_nest_end(desc_info, frag);
4081         return 0;
4082
4083 nest_cancel:
4084         rocker_tlv_nest_cancel(desc_info, frag);
4085 unmap_frag:
4086         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4087         return -EMSGSIZE;
4088 }
4089
4090 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4091 {
4092         struct rocker_port *rocker_port = netdev_priv(dev);
4093         struct rocker *rocker = rocker_port->rocker;
4094         struct rocker_desc_info *desc_info;
4095         struct rocker_tlv *frags;
4096         int i;
4097         int err;
4098
4099         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4100         if (unlikely(!desc_info)) {
4101                 if (net_ratelimit())
4102                         netdev_err(dev, "tx ring full when queue awake\n");
4103                 return NETDEV_TX_BUSY;
4104         }
4105
4106         rocker_desc_cookie_ptr_set(desc_info, skb);
4107
4108         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4109         if (!frags)
4110                 goto out;
4111         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4112                                           skb->data, skb_headlen(skb));
4113         if (err)
4114                 goto nest_cancel;
4115         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
4116                 goto nest_cancel;
4117
4118         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4119                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4120
4121                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4122                                                   skb_frag_address(frag),
4123                                                   skb_frag_size(frag));
4124                 if (err)
4125                         goto unmap_frags;
4126         }
4127         rocker_tlv_nest_end(desc_info, frags);
4128
4129         rocker_desc_gen_clear(desc_info);
4130         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4131
4132         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4133         if (!desc_info)
4134                 netif_stop_queue(dev);
4135
4136         return NETDEV_TX_OK;
4137
4138 unmap_frags:
4139         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4140 nest_cancel:
4141         rocker_tlv_nest_cancel(desc_info, frags);
4142 out:
4143         dev_kfree_skb(skb);
4144         dev->stats.tx_dropped++;
4145
4146         return NETDEV_TX_OK;
4147 }
4148
4149 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4150 {
4151         struct sockaddr *addr = p;
4152         struct rocker_port *rocker_port = netdev_priv(dev);
4153         int err;
4154
4155         if (!is_valid_ether_addr(addr->sa_data))
4156                 return -EADDRNOTAVAIL;
4157
4158         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4159         if (err)
4160                 return err;
4161         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4162         return 0;
4163 }
4164
4165 static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
4166                                        __be16 proto, u16 vid)
4167 {
4168         struct rocker_port *rocker_port = netdev_priv(dev);
4169         int err;
4170
4171         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, vid);
4172         if (err)
4173                 return err;
4174
4175         return rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4176                                       0, htons(vid));
4177 }
4178
4179 static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
4180                                         __be16 proto, u16 vid)
4181 {
4182         struct rocker_port *rocker_port = netdev_priv(dev);
4183         int err;
4184
4185         err = rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4186                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4187         if (err)
4188                 return err;
4189
4190         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
4191                                 ROCKER_OP_FLAG_REMOVE, vid);
4192 }
4193
4194 static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
4195                                struct net_device *dev,
4196                                const unsigned char *addr, u16 vid,
4197                                u16 nlm_flags)
4198 {
4199         struct rocker_port *rocker_port = netdev_priv(dev);
4200         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4201         int flags = 0;
4202
4203         if (!rocker_port_is_bridged(rocker_port))
4204                 return -EINVAL;
4205
4206         return rocker_port_fdb(rocker_port, SWITCHDEV_TRANS_NONE,
4207                                addr, vlan_id, flags);
4208 }
4209
4210 static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
4211                                struct net_device *dev,
4212                                const unsigned char *addr, u16 vid)
4213 {
4214         struct rocker_port *rocker_port = netdev_priv(dev);
4215         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4216         int flags = ROCKER_OP_FLAG_REMOVE;
4217
4218         if (!rocker_port_is_bridged(rocker_port))
4219                 return -EINVAL;
4220
4221         return rocker_port_fdb(rocker_port, SWITCHDEV_TRANS_NONE,
4222                                addr, vlan_id, flags);
4223 }
4224
4225 static int rocker_fdb_fill_info(struct sk_buff *skb,
4226                                 struct rocker_port *rocker_port,
4227                                 const unsigned char *addr, u16 vid,
4228                                 u32 portid, u32 seq, int type,
4229                                 unsigned int flags)
4230 {
4231         struct nlmsghdr *nlh;
4232         struct ndmsg *ndm;
4233
4234         nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
4235         if (!nlh)
4236                 return -EMSGSIZE;
4237
4238         ndm = nlmsg_data(nlh);
4239         ndm->ndm_family  = AF_BRIDGE;
4240         ndm->ndm_pad1    = 0;
4241         ndm->ndm_pad2    = 0;
4242         ndm->ndm_flags   = NTF_SELF;
4243         ndm->ndm_type    = 0;
4244         ndm->ndm_ifindex = rocker_port->dev->ifindex;
4245         ndm->ndm_state   = NUD_REACHABLE;
4246
4247         if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
4248                 goto nla_put_failure;
4249
4250         if (vid && nla_put_u16(skb, NDA_VLAN, vid))
4251                 goto nla_put_failure;
4252
4253         nlmsg_end(skb, nlh);
4254         return 0;
4255
4256 nla_put_failure:
4257         nlmsg_cancel(skb, nlh);
4258         return -EMSGSIZE;
4259 }
4260
4261 static int rocker_port_fdb_dump(struct sk_buff *skb,
4262                                 struct netlink_callback *cb,
4263                                 struct net_device *dev,
4264                                 struct net_device *filter_dev,
4265                                 int idx)
4266 {
4267         struct rocker_port *rocker_port = netdev_priv(dev);
4268         struct rocker *rocker = rocker_port->rocker;
4269         struct rocker_fdb_tbl_entry *found;
4270         struct hlist_node *tmp;
4271         int bkt;
4272         unsigned long lock_flags;
4273         const unsigned char *addr;
4274         u16 vid;
4275         int err;
4276
4277         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4278         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4279                 if (found->key.pport != rocker_port->pport)
4280                         continue;
4281                 if (idx < cb->args[0])
4282                         goto skip;
4283                 addr = found->key.addr;
4284                 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
4285                 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
4286                                            NETLINK_CB(cb->skb).portid,
4287                                            cb->nlh->nlmsg_seq,
4288                                            RTM_NEWNEIGH, NLM_F_MULTI);
4289                 if (err < 0)
4290                         break;
4291 skip:
4292                 ++idx;
4293         }
4294         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4295         return idx;
4296 }
4297
4298 static int rocker_port_bridge_setlink(struct net_device *dev,
4299                                       struct nlmsghdr *nlh, u16 flags)
4300 {
4301         struct rocker_port *rocker_port = netdev_priv(dev);
4302         struct nlattr *protinfo;
4303         struct nlattr *attr;
4304         int err;
4305
4306         protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
4307                                    IFLA_PROTINFO);
4308         if (protinfo) {
4309                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING);
4310                 if (attr) {
4311                         if (nla_len(attr) < sizeof(u8))
4312                                 return -EINVAL;
4313
4314                         if (nla_get_u8(attr))
4315                                 rocker_port->brport_flags |= BR_LEARNING;
4316                         else
4317                                 rocker_port->brport_flags &= ~BR_LEARNING;
4318                         err = rocker_port_set_learning(rocker_port,
4319                                                        SWITCHDEV_TRANS_NONE);
4320                         if (err)
4321                                 return err;
4322                 }
4323                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC);
4324                 if (attr) {
4325                         if (nla_len(attr) < sizeof(u8))
4326                                 return -EINVAL;
4327
4328                         if (nla_get_u8(attr))
4329                                 rocker_port->brport_flags |= BR_LEARNING_SYNC;
4330                         else
4331                                 rocker_port->brport_flags &= ~BR_LEARNING_SYNC;
4332                 }
4333         }
4334
4335         return 0;
4336 }
4337
4338 static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4339                                       struct net_device *dev,
4340                                       u32 filter_mask, int nlflags)
4341 {
4342         struct rocker_port *rocker_port = netdev_priv(dev);
4343         u16 mode = BRIDGE_MODE_UNDEF;
4344         u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
4345
4346         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
4347                                        rocker_port->brport_flags, mask,
4348                                        nlflags);
4349 }
4350
4351 static int rocker_port_get_phys_port_name(struct net_device *dev,
4352                                           char *buf, size_t len)
4353 {
4354         struct rocker_port *rocker_port = netdev_priv(dev);
4355         struct port_name name = { .buf = buf, .len = len };
4356         int err;
4357
4358         err = rocker_cmd_exec(rocker_port->rocker, rocker_port,
4359                               SWITCHDEV_TRANS_NONE,
4360                               rocker_cmd_get_port_settings_prep, NULL,
4361                               rocker_cmd_get_port_settings_phys_name_proc,
4362                               &name);
4363
4364         return err ? -EOPNOTSUPP : 0;
4365 }
4366
4367 static const struct net_device_ops rocker_port_netdev_ops = {
4368         .ndo_open                       = rocker_port_open,
4369         .ndo_stop                       = rocker_port_stop,
4370         .ndo_start_xmit                 = rocker_port_xmit,
4371         .ndo_set_mac_address            = rocker_port_set_mac_address,
4372         .ndo_vlan_rx_add_vid            = rocker_port_vlan_rx_add_vid,
4373         .ndo_vlan_rx_kill_vid           = rocker_port_vlan_rx_kill_vid,
4374         .ndo_fdb_add                    = rocker_port_fdb_add,
4375         .ndo_fdb_del                    = rocker_port_fdb_del,
4376         .ndo_fdb_dump                   = rocker_port_fdb_dump,
4377         .ndo_bridge_setlink             = rocker_port_bridge_setlink,
4378         .ndo_bridge_getlink             = rocker_port_bridge_getlink,
4379         .ndo_get_phys_port_name         = rocker_port_get_phys_port_name,
4380 };
4381
4382 /********************
4383  * swdev interface
4384  ********************/
4385
4386 static int rocker_port_attr_get(struct net_device *dev,
4387                                 struct switchdev_attr *attr)
4388 {
4389         struct rocker_port *rocker_port = netdev_priv(dev);
4390         struct rocker *rocker = rocker_port->rocker;
4391
4392         switch (attr->id) {
4393         case SWITCHDEV_ATTR_PORT_PARENT_ID:
4394                 attr->ppid.id_len = sizeof(rocker->hw.id);
4395                 memcpy(&attr->ppid.id, &rocker->hw.id, attr->ppid.id_len);
4396                 break;
4397         default:
4398                 return -EOPNOTSUPP;
4399         }
4400
4401         return 0;
4402 }
4403
4404 static void rocker_port_trans_abort(struct rocker_port *rocker_port)
4405 {
4406         struct list_head *mem, *tmp;
4407
4408         list_for_each_safe(mem, tmp, &rocker_port->trans_mem) {
4409                 list_del(mem);
4410                 kfree(mem);
4411         }
4412 }
4413
4414 static int rocker_port_attr_set(struct net_device *dev,
4415                                 struct switchdev_attr *attr)
4416 {
4417         struct rocker_port *rocker_port = netdev_priv(dev);
4418         int err = 0;
4419
4420         switch (attr->trans) {
4421         case SWITCHDEV_TRANS_PREPARE:
4422                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4423                 break;
4424         case SWITCHDEV_TRANS_ABORT:
4425                 rocker_port_trans_abort(rocker_port);
4426                 return 0;
4427         default:
4428                 break;
4429         }
4430
4431         switch (attr->id) {
4432         case SWITCHDEV_ATTR_PORT_STP_STATE:
4433                 err = rocker_port_stp_update(rocker_port, attr->trans,
4434                                              attr->stp_state);
4435                 break;
4436         default:
4437                 err = -EOPNOTSUPP;
4438                 break;
4439         }
4440
4441         return err;
4442 }
4443
4444 static int rocker_port_vlan_add(struct rocker_port *rocker_port,
4445                                 enum switchdev_trans trans, u16 vid, u16 flags)
4446 {
4447         int err;
4448
4449         /* XXX deal with flags for PVID and untagged */
4450
4451         err = rocker_port_vlan(rocker_port, trans, 0, vid);
4452         if (err)
4453                 return err;
4454
4455         return rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
4456 }
4457
4458 static int rocker_port_vlans_add(struct rocker_port *rocker_port,
4459                                  enum switchdev_trans trans,
4460                                  struct switchdev_obj_vlan *vlan)
4461 {
4462         u16 vid;
4463         int err;
4464
4465         for (vid = vlan->vid_start; vid <= vlan->vid_end; vid++) {
4466                 err = rocker_port_vlan_add(rocker_port, trans,
4467                                            vid, vlan->flags);
4468                 if (err)
4469                         return err;
4470         }
4471
4472         return 0;
4473 }
4474
4475 static int rocker_port_obj_add(struct net_device *dev,
4476                                struct switchdev_obj *obj)
4477 {
4478         struct rocker_port *rocker_port = netdev_priv(dev);
4479         int err = 0;
4480
4481         switch (obj->trans) {
4482         case SWITCHDEV_TRANS_PREPARE:
4483                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4484                 break;
4485         case SWITCHDEV_TRANS_ABORT:
4486                 rocker_port_trans_abort(rocker_port);
4487                 return 0;
4488         default:
4489                 break;
4490         }
4491
4492         switch (obj->id) {
4493         case SWITCHDEV_OBJ_PORT_VLAN:
4494                 err = rocker_port_vlans_add(rocker_port, obj->trans,
4495                                             &obj->vlan);
4496                 break;
4497         default:
4498                 err = -EOPNOTSUPP;
4499                 break;
4500         }
4501
4502         return err;
4503 }
4504
4505 static int rocker_port_vlan_del(struct rocker_port *rocker_port,
4506                                 u16 vid, u16 flags)
4507 {
4508         int err;
4509
4510         err = rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4511                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4512         if (err)
4513                 return err;
4514
4515         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
4516                                 ROCKER_OP_FLAG_REMOVE, vid);
4517 }
4518
4519 static int rocker_port_vlans_del(struct rocker_port *rocker_port,
4520                                  struct switchdev_obj_vlan *vlan)
4521 {
4522         u16 vid;
4523         int err;
4524
4525         for (vid = vlan->vid_start; vid <= vlan->vid_end; vid++) {
4526                 err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
4527                 if (err)
4528                         return err;
4529         }
4530
4531         return 0;
4532 }
4533
4534 static int rocker_port_obj_del(struct net_device *dev,
4535                                struct switchdev_obj *obj)
4536 {
4537         struct rocker_port *rocker_port = netdev_priv(dev);
4538         int err = 0;
4539
4540         switch (obj->id) {
4541         case SWITCHDEV_OBJ_PORT_VLAN:
4542                 err = rocker_port_vlans_del(rocker_port, &obj->vlan);
4543                 break;
4544         default:
4545                 err = -EOPNOTSUPP;
4546                 break;
4547         }
4548
4549         return err;
4550 }
4551
4552 static int rocker_port_switchdev_fib_ipv4_add(struct net_device *dev,
4553                                               __be32 dst, int dst_len,
4554                                               struct fib_info *fi,
4555                                               u8 tos, u8 type,
4556                                               u32 nlflags, u32 tb_id)
4557 {
4558         struct rocker_port *rocker_port = netdev_priv(dev);
4559         int flags = 0;
4560
4561         return rocker_port_fib_ipv4(rocker_port, SWITCHDEV_TRANS_NONE,
4562                                     dst, dst_len, fi, tb_id, flags);
4563 }
4564
4565 static int rocker_port_switchdev_fib_ipv4_del(struct net_device *dev,
4566                                               __be32 dst, int dst_len,
4567                                               struct fib_info *fi,
4568                                               u8 tos, u8 type, u32 tb_id)
4569 {
4570         struct rocker_port *rocker_port = netdev_priv(dev);
4571         int flags = ROCKER_OP_FLAG_REMOVE;
4572
4573         return rocker_port_fib_ipv4(rocker_port, SWITCHDEV_TRANS_NONE,
4574                                     dst, dst_len, fi, tb_id, flags);
4575 }
4576
4577 static const struct switchdev_ops rocker_port_switchdev_ops = {
4578         .switchdev_port_attr_get        = rocker_port_attr_get,
4579         .switchdev_port_attr_set        = rocker_port_attr_set,
4580         .switchdev_port_obj_add         = rocker_port_obj_add,
4581         .switchdev_port_obj_del         = rocker_port_obj_del,
4582         .switchdev_fib_ipv4_add         = rocker_port_switchdev_fib_ipv4_add,
4583         .switchdev_fib_ipv4_del         = rocker_port_switchdev_fib_ipv4_del,
4584 };
4585
4586 /********************
4587  * ethtool interface
4588  ********************/
4589
4590 static int rocker_port_get_settings(struct net_device *dev,
4591                                     struct ethtool_cmd *ecmd)
4592 {
4593         struct rocker_port *rocker_port = netdev_priv(dev);
4594
4595         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4596 }
4597
4598 static int rocker_port_set_settings(struct net_device *dev,
4599                                     struct ethtool_cmd *ecmd)
4600 {
4601         struct rocker_port *rocker_port = netdev_priv(dev);
4602
4603         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4604 }
4605
4606 static void rocker_port_get_drvinfo(struct net_device *dev,
4607                                     struct ethtool_drvinfo *drvinfo)
4608 {
4609         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4610         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4611 }
4612
4613 static struct rocker_port_stats {
4614         char str[ETH_GSTRING_LEN];
4615         int type;
4616 } rocker_port_stats[] = {
4617         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4618         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4619         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4620         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4621
4622         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4623         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4624         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4625         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4626 };
4627
4628 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4629
4630 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4631                                     u8 *data)
4632 {
4633         u8 *p = data;
4634         int i;
4635
4636         switch (stringset) {
4637         case ETH_SS_STATS:
4638                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4639                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4640                         p += ETH_GSTRING_LEN;
4641                 }
4642                 break;
4643         }
4644 }
4645
4646 static int
4647 rocker_cmd_get_port_stats_prep(struct rocker *rocker,
4648                                struct rocker_port *rocker_port,
4649                                struct rocker_desc_info *desc_info,
4650                                void *priv)
4651 {
4652         struct rocker_tlv *cmd_stats;
4653
4654         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4655                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4656                 return -EMSGSIZE;
4657
4658         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4659         if (!cmd_stats)
4660                 return -EMSGSIZE;
4661
4662         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4663                                rocker_port->pport))
4664                 return -EMSGSIZE;
4665
4666         rocker_tlv_nest_end(desc_info, cmd_stats);
4667
4668         return 0;
4669 }
4670
4671 static int
4672 rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker,
4673                                        struct rocker_port *rocker_port,
4674                                        struct rocker_desc_info *desc_info,
4675                                        void *priv)
4676 {
4677         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4678         struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4679         struct rocker_tlv *pattr;
4680         u32 pport;
4681         u64 *data = priv;
4682         int i;
4683
4684         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4685
4686         if (!attrs[ROCKER_TLV_CMD_INFO])
4687                 return -EIO;
4688
4689         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4690                                 attrs[ROCKER_TLV_CMD_INFO]);
4691
4692         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4693                 return -EIO;
4694
4695         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4696         if (pport != rocker_port->pport)
4697                 return -EIO;
4698
4699         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4700                 pattr = stats_attrs[rocker_port_stats[i].type];
4701                 if (!pattr)
4702                         continue;
4703
4704                 data[i] = rocker_tlv_get_u64(pattr);
4705         }
4706
4707         return 0;
4708 }
4709
4710 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4711                                              void *priv)
4712 {
4713         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
4714                                SWITCHDEV_TRANS_NONE,
4715                                rocker_cmd_get_port_stats_prep, NULL,
4716                                rocker_cmd_get_port_stats_ethtool_proc,
4717                                priv);
4718 }
4719
4720 static void rocker_port_get_stats(struct net_device *dev,
4721                                   struct ethtool_stats *stats, u64 *data)
4722 {
4723         struct rocker_port *rocker_port = netdev_priv(dev);
4724
4725         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4726                 int i;
4727
4728                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4729                         data[i] = 0;
4730         }
4731
4732         return;
4733 }
4734
4735 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4736 {
4737         switch (sset) {
4738         case ETH_SS_STATS:
4739                 return ROCKER_PORT_STATS_LEN;
4740         default:
4741                 return -EOPNOTSUPP;
4742         }
4743 }
4744
4745 static const struct ethtool_ops rocker_port_ethtool_ops = {
4746         .get_settings           = rocker_port_get_settings,
4747         .set_settings           = rocker_port_set_settings,
4748         .get_drvinfo            = rocker_port_get_drvinfo,
4749         .get_link               = ethtool_op_get_link,
4750         .get_strings            = rocker_port_get_strings,
4751         .get_ethtool_stats      = rocker_port_get_stats,
4752         .get_sset_count         = rocker_port_get_sset_count,
4753 };
4754
4755 /*****************
4756  * NAPI interface
4757  *****************/
4758
4759 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4760 {
4761         return container_of(napi, struct rocker_port, napi_tx);
4762 }
4763
4764 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4765 {
4766         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4767         struct rocker *rocker = rocker_port->rocker;
4768         struct rocker_desc_info *desc_info;
4769         u32 credits = 0;
4770         int err;
4771
4772         /* Cleanup tx descriptors */
4773         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4774                 struct sk_buff *skb;
4775
4776                 err = rocker_desc_err(desc_info);
4777                 if (err && net_ratelimit())
4778                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4779                                    err);
4780                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4781
4782                 skb = rocker_desc_cookie_ptr_get(desc_info);
4783                 if (err == 0) {
4784                         rocker_port->dev->stats.tx_packets++;
4785                         rocker_port->dev->stats.tx_bytes += skb->len;
4786                 } else
4787                         rocker_port->dev->stats.tx_errors++;
4788
4789                 dev_kfree_skb_any(skb);
4790                 credits++;
4791         }
4792
4793         if (credits && netif_queue_stopped(rocker_port->dev))
4794                 netif_wake_queue(rocker_port->dev);
4795
4796         napi_complete(napi);
4797         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4798
4799         return 0;
4800 }
4801
4802 static int rocker_port_rx_proc(struct rocker *rocker,
4803                                struct rocker_port *rocker_port,
4804                                struct rocker_desc_info *desc_info)
4805 {
4806         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4807         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4808         size_t rx_len;
4809
4810         if (!skb)
4811                 return -ENOENT;
4812
4813         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4814         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4815                 return -EINVAL;
4816
4817         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4818
4819         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4820         skb_put(skb, rx_len);
4821         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4822
4823         rocker_port->dev->stats.rx_packets++;
4824         rocker_port->dev->stats.rx_bytes += skb->len;
4825
4826         netif_receive_skb(skb);
4827
4828         return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
4829 }
4830
4831 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4832 {
4833         return container_of(napi, struct rocker_port, napi_rx);
4834 }
4835
4836 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4837 {
4838         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4839         struct rocker *rocker = rocker_port->rocker;
4840         struct rocker_desc_info *desc_info;
4841         u32 credits = 0;
4842         int err;
4843
4844         /* Process rx descriptors */
4845         while (credits < budget &&
4846                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4847                 err = rocker_desc_err(desc_info);
4848                 if (err) {
4849                         if (net_ratelimit())
4850                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4851                                            err);
4852                 } else {
4853                         err = rocker_port_rx_proc(rocker, rocker_port,
4854                                                   desc_info);
4855                         if (err && net_ratelimit())
4856                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4857                                            err);
4858                 }
4859                 if (err)
4860                         rocker_port->dev->stats.rx_errors++;
4861
4862                 rocker_desc_gen_clear(desc_info);
4863                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4864                 credits++;
4865         }
4866
4867         if (credits < budget)
4868                 napi_complete(napi);
4869
4870         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4871
4872         return credits;
4873 }
4874
4875 /*****************
4876  * PCI driver ops
4877  *****************/
4878
4879 static void rocker_carrier_init(struct rocker_port *rocker_port)
4880 {
4881         struct rocker *rocker = rocker_port->rocker;
4882         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4883         bool link_up;
4884
4885         link_up = link_status & (1 << rocker_port->pport);
4886         if (link_up)
4887                 netif_carrier_on(rocker_port->dev);
4888         else
4889                 netif_carrier_off(rocker_port->dev);
4890 }
4891
4892 static void rocker_remove_ports(struct rocker *rocker)
4893 {
4894         struct rocker_port *rocker_port;
4895         int i;
4896
4897         for (i = 0; i < rocker->port_count; i++) {
4898                 rocker_port = rocker->ports[i];
4899                 rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
4900                                    ROCKER_OP_FLAG_REMOVE);
4901                 unregister_netdev(rocker_port->dev);
4902         }
4903         kfree(rocker->ports);
4904 }
4905
4906 static void rocker_port_dev_addr_init(struct rocker *rocker,
4907                                       struct rocker_port *rocker_port)
4908 {
4909         struct pci_dev *pdev = rocker->pdev;
4910         int err;
4911
4912         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4913                                                    rocker_port->dev->dev_addr);
4914         if (err) {
4915                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4916                 eth_hw_addr_random(rocker_port->dev);
4917         }
4918 }
4919
4920 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4921 {
4922         struct pci_dev *pdev = rocker->pdev;
4923         struct rocker_port *rocker_port;
4924         struct net_device *dev;
4925         int err;
4926
4927         dev = alloc_etherdev(sizeof(struct rocker_port));
4928         if (!dev)
4929                 return -ENOMEM;
4930         rocker_port = netdev_priv(dev);
4931         rocker_port->dev = dev;
4932         rocker_port->rocker = rocker;
4933         rocker_port->port_number = port_number;
4934         rocker_port->pport = port_number + 1;
4935         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4936         INIT_LIST_HEAD(&rocker_port->trans_mem);
4937
4938         rocker_port_dev_addr_init(rocker, rocker_port);
4939         dev->netdev_ops = &rocker_port_netdev_ops;
4940         dev->ethtool_ops = &rocker_port_ethtool_ops;
4941         dev->switchdev_ops = &rocker_port_switchdev_ops;
4942         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4943                        NAPI_POLL_WEIGHT);
4944         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4945                        NAPI_POLL_WEIGHT);
4946         rocker_carrier_init(rocker_port);
4947
4948         dev->features |= NETIF_F_NETNS_LOCAL |
4949                          NETIF_F_HW_VLAN_CTAG_FILTER |
4950                          NETIF_F_HW_SWITCH_OFFLOAD;
4951
4952         err = register_netdev(dev);
4953         if (err) {
4954                 dev_err(&pdev->dev, "register_netdev failed\n");
4955                 goto err_register_netdev;
4956         }
4957         rocker->ports[port_number] = rocker_port;
4958
4959         rocker_port_set_learning(rocker_port, SWITCHDEV_TRANS_NONE);
4960
4961         rocker_port->internal_vlan_id =
4962                 rocker_port_internal_vlan_id_get(rocker_port,
4963                                                  SWITCHDEV_TRANS_NONE,
4964                                                  dev->ifindex);
4965         err = rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE, 0);
4966         if (err) {
4967                 dev_err(&pdev->dev, "install ig port table failed\n");
4968                 goto err_port_ig_tbl;
4969         }
4970
4971         return 0;
4972
4973 err_port_ig_tbl:
4974         unregister_netdev(dev);
4975 err_register_netdev:
4976         free_netdev(dev);
4977         return err;
4978 }
4979
4980 static int rocker_probe_ports(struct rocker *rocker)
4981 {
4982         int i;
4983         size_t alloc_size;
4984         int err;
4985
4986         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4987         rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
4988         if (!rocker->ports)
4989                 return -ENOMEM;
4990         for (i = 0; i < rocker->port_count; i++) {
4991                 err = rocker_probe_port(rocker, i);
4992                 if (err)
4993                         goto remove_ports;
4994         }
4995         return 0;
4996
4997 remove_ports:
4998         rocker_remove_ports(rocker);
4999         return err;
5000 }
5001
5002 static int rocker_msix_init(struct rocker *rocker)
5003 {
5004         struct pci_dev *pdev = rocker->pdev;
5005         int msix_entries;
5006         int i;
5007         int err;
5008
5009         msix_entries = pci_msix_vec_count(pdev);
5010         if (msix_entries < 0)
5011                 return msix_entries;
5012
5013         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
5014                 return -EINVAL;
5015
5016         rocker->msix_entries = kmalloc_array(msix_entries,
5017                                              sizeof(struct msix_entry),
5018                                              GFP_KERNEL);
5019         if (!rocker->msix_entries)
5020                 return -ENOMEM;
5021
5022         for (i = 0; i < msix_entries; i++)
5023                 rocker->msix_entries[i].entry = i;
5024
5025         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
5026         if (err < 0)
5027                 goto err_enable_msix;
5028
5029         return 0;
5030
5031 err_enable_msix:
5032         kfree(rocker->msix_entries);
5033         return err;
5034 }
5035
5036 static void rocker_msix_fini(struct rocker *rocker)
5037 {
5038         pci_disable_msix(rocker->pdev);
5039         kfree(rocker->msix_entries);
5040 }
5041
5042 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
5043 {
5044         struct rocker *rocker;
5045         int err;
5046
5047         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
5048         if (!rocker)
5049                 return -ENOMEM;
5050
5051         err = pci_enable_device(pdev);
5052         if (err) {
5053                 dev_err(&pdev->dev, "pci_enable_device failed\n");
5054                 goto err_pci_enable_device;
5055         }
5056
5057         err = pci_request_regions(pdev, rocker_driver_name);
5058         if (err) {
5059                 dev_err(&pdev->dev, "pci_request_regions failed\n");
5060                 goto err_pci_request_regions;
5061         }
5062
5063         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
5064         if (!err) {
5065                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
5066                 if (err) {
5067                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
5068                         goto err_pci_set_dma_mask;
5069                 }
5070         } else {
5071                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5072                 if (err) {
5073                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
5074                         goto err_pci_set_dma_mask;
5075                 }
5076         }
5077
5078         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
5079                 dev_err(&pdev->dev, "invalid PCI region size\n");
5080                 err = -EINVAL;
5081                 goto err_pci_resource_len_check;
5082         }
5083
5084         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
5085                                   pci_resource_len(pdev, 0));
5086         if (!rocker->hw_addr) {
5087                 dev_err(&pdev->dev, "ioremap failed\n");
5088                 err = -EIO;
5089                 goto err_ioremap;
5090         }
5091         pci_set_master(pdev);
5092
5093         rocker->pdev = pdev;
5094         pci_set_drvdata(pdev, rocker);
5095
5096         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
5097
5098         err = rocker_msix_init(rocker);
5099         if (err) {
5100                 dev_err(&pdev->dev, "MSI-X init failed\n");
5101                 goto err_msix_init;
5102         }
5103
5104         err = rocker_basic_hw_test(rocker);
5105         if (err) {
5106                 dev_err(&pdev->dev, "basic hw test failed\n");
5107                 goto err_basic_hw_test;
5108         }
5109
5110         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5111
5112         err = rocker_dma_rings_init(rocker);
5113         if (err)
5114                 goto err_dma_rings_init;
5115
5116         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5117                           rocker_cmd_irq_handler, 0,
5118                           rocker_driver_name, rocker);
5119         if (err) {
5120                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5121                 goto err_request_cmd_irq;
5122         }
5123
5124         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5125                           rocker_event_irq_handler, 0,
5126                           rocker_driver_name, rocker);
5127         if (err) {
5128                 dev_err(&pdev->dev, "cannot assign event irq\n");
5129                 goto err_request_event_irq;
5130         }
5131
5132         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5133
5134         err = rocker_init_tbls(rocker);
5135         if (err) {
5136                 dev_err(&pdev->dev, "cannot init rocker tables\n");
5137                 goto err_init_tbls;
5138         }
5139
5140         err = rocker_probe_ports(rocker);
5141         if (err) {
5142                 dev_err(&pdev->dev, "failed to probe ports\n");
5143                 goto err_probe_ports;
5144         }
5145
5146         dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
5147
5148         return 0;
5149
5150 err_probe_ports:
5151         rocker_free_tbls(rocker);
5152 err_init_tbls:
5153         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5154 err_request_event_irq:
5155         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5156 err_request_cmd_irq:
5157         rocker_dma_rings_fini(rocker);
5158 err_dma_rings_init:
5159 err_basic_hw_test:
5160         rocker_msix_fini(rocker);
5161 err_msix_init:
5162         iounmap(rocker->hw_addr);
5163 err_ioremap:
5164 err_pci_resource_len_check:
5165 err_pci_set_dma_mask:
5166         pci_release_regions(pdev);
5167 err_pci_request_regions:
5168         pci_disable_device(pdev);
5169 err_pci_enable_device:
5170         kfree(rocker);
5171         return err;
5172 }
5173
5174 static void rocker_remove(struct pci_dev *pdev)
5175 {
5176         struct rocker *rocker = pci_get_drvdata(pdev);
5177
5178         rocker_free_tbls(rocker);
5179         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5180         rocker_remove_ports(rocker);
5181         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5182         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5183         rocker_dma_rings_fini(rocker);
5184         rocker_msix_fini(rocker);
5185         iounmap(rocker->hw_addr);
5186         pci_release_regions(rocker->pdev);
5187         pci_disable_device(rocker->pdev);
5188         kfree(rocker);
5189 }
5190
5191 static struct pci_driver rocker_pci_driver = {
5192         .name           = rocker_driver_name,
5193         .id_table       = rocker_pci_id_table,
5194         .probe          = rocker_probe,
5195         .remove         = rocker_remove,
5196 };
5197
5198 /************************************
5199  * Net device notifier event handler
5200  ************************************/
5201
5202 static bool rocker_port_dev_check(struct net_device *dev)
5203 {
5204         return dev->netdev_ops == &rocker_port_netdev_ops;
5205 }
5206
5207 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5208                                    struct net_device *bridge)
5209 {
5210         int err;
5211
5212         rocker_port_internal_vlan_id_put(rocker_port, SWITCHDEV_TRANS_NONE,
5213                                          rocker_port->dev->ifindex);
5214
5215         rocker_port->bridge_dev = bridge;
5216
5217         /* Use bridge internal VLAN ID for untagged pkts */
5218         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
5219                                ROCKER_OP_FLAG_REMOVE, 0);
5220         if (err)
5221                 return err;
5222         rocker_port->internal_vlan_id =
5223                 rocker_port_internal_vlan_id_get(rocker_port,
5224                                                  SWITCHDEV_TRANS_NONE,
5225                                                  bridge->ifindex);
5226         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, 0);
5227 }
5228
5229 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5230 {
5231         int err;
5232
5233         rocker_port_internal_vlan_id_put(rocker_port, SWITCHDEV_TRANS_NONE,
5234                                          rocker_port->bridge_dev->ifindex);
5235
5236         rocker_port->bridge_dev = NULL;
5237
5238         /* Use port internal VLAN ID for untagged pkts */
5239         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
5240                                ROCKER_OP_FLAG_REMOVE, 0);
5241         if (err)
5242                 return err;
5243         rocker_port->internal_vlan_id =
5244                 rocker_port_internal_vlan_id_get(rocker_port,
5245                                                  SWITCHDEV_TRANS_NONE,
5246                                                  rocker_port->dev->ifindex);
5247         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, 0);
5248         if (err)
5249                 return err;
5250
5251         if (rocker_port->dev->flags & IFF_UP)
5252                 err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE);
5253
5254         return err;
5255 }
5256
5257 static int rocker_port_master_changed(struct net_device *dev)
5258 {
5259         struct rocker_port *rocker_port = netdev_priv(dev);
5260         struct net_device *master = netdev_master_upper_dev_get(dev);
5261         int err = 0;
5262
5263         /* There are currently three cases handled here:
5264          * 1. Joining a bridge
5265          * 2. Leaving a previously joined bridge
5266          * 3. Other, e.g. being added to or removed from a bond or openvswitch,
5267          *    in which case nothing is done
5268          */
5269         if (master && master->rtnl_link_ops &&
5270             !strcmp(master->rtnl_link_ops->kind, "bridge"))
5271                 err = rocker_port_bridge_join(rocker_port, master);
5272         else if (rocker_port_is_bridged(rocker_port))
5273                 err = rocker_port_bridge_leave(rocker_port);
5274
5275         return err;
5276 }
5277
5278 static int rocker_netdevice_event(struct notifier_block *unused,
5279                                   unsigned long event, void *ptr)
5280 {
5281         struct net_device *dev;
5282         int err;
5283
5284         switch (event) {
5285         case NETDEV_CHANGEUPPER:
5286                 dev = netdev_notifier_info_to_dev(ptr);
5287                 if (!rocker_port_dev_check(dev))
5288                         return NOTIFY_DONE;
5289                 err = rocker_port_master_changed(dev);
5290                 if (err)
5291                         netdev_warn(dev,
5292                                     "failed to reflect master change (err %d)\n",
5293                                     err);
5294                 break;
5295         }
5296
5297         return NOTIFY_DONE;
5298 }
5299
5300 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5301         .notifier_call = rocker_netdevice_event,
5302 };
5303
5304 /************************************
5305  * Net event notifier event handler
5306  ************************************/
5307
5308 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5309 {
5310         struct rocker_port *rocker_port = netdev_priv(dev);
5311         int flags = (n->nud_state & NUD_VALID) ? 0 : ROCKER_OP_FLAG_REMOVE;
5312         __be32 ip_addr = *(__be32 *)n->primary_key;
5313
5314         return rocker_port_ipv4_neigh(rocker_port, SWITCHDEV_TRANS_NONE,
5315                                       flags, ip_addr, n->ha);
5316 }
5317
5318 static int rocker_netevent_event(struct notifier_block *unused,
5319                                  unsigned long event, void *ptr)
5320 {
5321         struct net_device *dev;
5322         struct neighbour *n = ptr;
5323         int err;
5324
5325         switch (event) {
5326         case NETEVENT_NEIGH_UPDATE:
5327                 if (n->tbl != &arp_tbl)
5328                         return NOTIFY_DONE;
5329                 dev = n->dev;
5330                 if (!rocker_port_dev_check(dev))
5331                         return NOTIFY_DONE;
5332                 err = rocker_neigh_update(dev, n);
5333                 if (err)
5334                         netdev_warn(dev,
5335                                     "failed to handle neigh update (err %d)\n",
5336                                     err);
5337                 break;
5338         }
5339
5340         return NOTIFY_DONE;
5341 }
5342
5343 static struct notifier_block rocker_netevent_nb __read_mostly = {
5344         .notifier_call = rocker_netevent_event,
5345 };
5346
5347 /***********************
5348  * Module init and exit
5349  ***********************/
5350
5351 static int __init rocker_module_init(void)
5352 {
5353         int err;
5354
5355         register_netdevice_notifier(&rocker_netdevice_nb);
5356         register_netevent_notifier(&rocker_netevent_nb);
5357         err = pci_register_driver(&rocker_pci_driver);
5358         if (err)
5359                 goto err_pci_register_driver;
5360         return 0;
5361
5362 err_pci_register_driver:
5363         unregister_netdevice_notifier(&rocker_netevent_nb);
5364         unregister_netdevice_notifier(&rocker_netdevice_nb);
5365         return err;
5366 }
5367
5368 static void __exit rocker_module_exit(void)
5369 {
5370         unregister_netevent_notifier(&rocker_netevent_nb);
5371         unregister_netdevice_notifier(&rocker_netdevice_nb);
5372         pci_unregister_driver(&rocker_pci_driver);
5373 }
5374
5375 module_init(rocker_module_init);
5376 module_exit(rocker_module_exit);
5377
5378 MODULE_LICENSE("GPL v2");
5379 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5380 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5381 MODULE_DESCRIPTION("Rocker switch device driver");
5382 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);