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_and_set_bit(ntohs(internal_vlan_id),
3419                                        rocker_port->vlan_bitmap))
3420                         return 0; /* already added */
3421         else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id),
3422                                                 rocker_port->vlan_bitmap))
3423                         return 0; /* already removed */
3424
3425         if (adding) {
3426                 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3427                                                 internal_vlan_id);
3428                 if (err) {
3429                         netdev_err(rocker_port->dev,
3430                                    "Error (%d) port ctrl vlan add\n", err);
3431                         return err;
3432                 }
3433         }
3434
3435         err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3436                                          internal_vlan_id, untagged);
3437         if (err) {
3438                 netdev_err(rocker_port->dev,
3439                            "Error (%d) port VLAN l2 groups\n", err);
3440                 return err;
3441         }
3442
3443         err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3444                                            internal_vlan_id);
3445         if (err) {
3446                 netdev_err(rocker_port->dev,
3447                            "Error (%d) port VLAN l2 flood group\n", err);
3448                 return err;
3449         }
3450
3451         err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3452                                    in_pport, vlan_id, vlan_id_mask,
3453                                    goto_tbl, untagged, internal_vlan_id);
3454         if (err)
3455                 netdev_err(rocker_port->dev,
3456                            "Error (%d) port VLAN table\n", err);
3457
3458         return err;
3459 }
3460
3461 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3462                               enum switchdev_trans trans, int flags)
3463 {
3464         enum rocker_of_dpa_table_id goto_tbl;
3465         u32 in_pport;
3466         u32 in_pport_mask;
3467         int err;
3468
3469         /* Normal Ethernet Frames.  Matches pkts from any local physical
3470          * ports.  Goto VLAN tbl.
3471          */
3472
3473         in_pport = 0;
3474         in_pport_mask = 0xffff0000;
3475         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3476
3477         err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3478                                       in_pport, in_pport_mask,
3479                                       goto_tbl);
3480         if (err)
3481                 netdev_err(rocker_port->dev,
3482                            "Error (%d) ingress port table entry\n", err);
3483
3484         return err;
3485 }
3486
3487 struct rocker_fdb_learn_work {
3488         struct work_struct work;
3489         struct rocker_port *rocker_port;
3490         enum switchdev_trans trans;
3491         int flags;
3492         u8 addr[ETH_ALEN];
3493         u16 vid;
3494 };
3495
3496 static void rocker_port_fdb_learn_work(struct work_struct *work)
3497 {
3498         struct rocker_fdb_learn_work *lw =
3499                 container_of(work, struct rocker_fdb_learn_work, work);
3500         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3501         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3502         struct switchdev_notifier_fdb_info info;
3503
3504         info.addr = lw->addr;
3505         info.vid = lw->vid;
3506
3507         if (learned && removing)
3508                 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3509                                          lw->rocker_port->dev, &info.info);
3510         else if (learned && !removing)
3511                 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3512                                          lw->rocker_port->dev, &info.info);
3513
3514         rocker_port_kfree(lw->rocker_port, lw->trans, work);
3515 }
3516
3517 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3518                                  enum switchdev_trans trans, int flags,
3519                                  const u8 *addr, __be16 vlan_id)
3520 {
3521         struct rocker_fdb_learn_work *lw;
3522         enum rocker_of_dpa_table_id goto_tbl =
3523                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3524         u32 out_pport = rocker_port->pport;
3525         u32 tunnel_id = 0;
3526         u32 group_id = ROCKER_GROUP_NONE;
3527         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3528         bool copy_to_cpu = false;
3529         int err;
3530
3531         if (rocker_port_is_bridged(rocker_port))
3532                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3533
3534         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3535                 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3536                                              NULL, vlan_id, tunnel_id, goto_tbl,
3537                                              group_id, copy_to_cpu);
3538                 if (err)
3539                         return err;
3540         }
3541
3542         if (!syncing)
3543                 return 0;
3544
3545         if (!rocker_port_is_bridged(rocker_port))
3546                 return 0;
3547
3548         lw = rocker_port_kzalloc(rocker_port, trans, sizeof(*lw));
3549         if (!lw)
3550                 return -ENOMEM;
3551
3552         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3553
3554         lw->rocker_port = rocker_port;
3555         lw->trans = trans;
3556         lw->flags = flags;
3557         ether_addr_copy(lw->addr, addr);
3558         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3559
3560         if (trans == SWITCHDEV_TRANS_PREPARE)
3561                 rocker_port_kfree(rocker_port, trans, lw);
3562         else
3563                 schedule_work(&lw->work);
3564
3565         return 0;
3566 }
3567
3568 static struct rocker_fdb_tbl_entry *
3569 rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3570 {
3571         struct rocker_fdb_tbl_entry *found;
3572
3573         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3574                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3575                         return found;
3576
3577         return NULL;
3578 }
3579
3580 static int rocker_port_fdb(struct rocker_port *rocker_port,
3581                            enum switchdev_trans trans,
3582                            const unsigned char *addr,
3583                            __be16 vlan_id, int flags)
3584 {
3585         struct rocker *rocker = rocker_port->rocker;
3586         struct rocker_fdb_tbl_entry *fdb;
3587         struct rocker_fdb_tbl_entry *found;
3588         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3589         unsigned long lock_flags;
3590
3591         fdb = rocker_port_kzalloc(rocker_port, trans, sizeof(*fdb));
3592         if (!fdb)
3593                 return -ENOMEM;
3594
3595         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3596         fdb->key.pport = rocker_port->pport;
3597         ether_addr_copy(fdb->key.addr, addr);
3598         fdb->key.vlan_id = vlan_id;
3599         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3600
3601         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3602
3603         found = rocker_fdb_tbl_find(rocker, fdb);
3604
3605         if (removing && found) {
3606                 rocker_port_kfree(rocker_port, trans, fdb);
3607                 hash_del(&found->entry);
3608         } else if (!removing && !found) {
3609                 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3610         }
3611
3612         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3613
3614         /* Check if adding and already exists, or removing and can't find */
3615         if (!found != !removing) {
3616                 rocker_port_kfree(rocker_port, trans, fdb);
3617                 if (!found && removing)
3618                         return 0;
3619                 /* Refreshing existing to update aging timers */
3620                 flags |= ROCKER_OP_FLAG_REFRESH;
3621         }
3622
3623         return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3624 }
3625
3626 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3627                                  enum switchdev_trans trans)
3628 {
3629         struct rocker *rocker = rocker_port->rocker;
3630         struct rocker_fdb_tbl_entry *found;
3631         unsigned long lock_flags;
3632         int flags = ROCKER_OP_FLAG_REMOVE;
3633         struct hlist_node *tmp;
3634         int bkt;
3635         int err = 0;
3636
3637         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3638             rocker_port->stp_state == BR_STATE_FORWARDING)
3639                 return 0;
3640
3641         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3642
3643         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3644                 if (found->key.pport != rocker_port->pport)
3645                         continue;
3646                 if (!found->learned)
3647                         continue;
3648                 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3649                                             found->key.addr,
3650                                             found->key.vlan_id);
3651                 if (err)
3652                         goto err_out;
3653                 hash_del(&found->entry);
3654         }
3655
3656 err_out:
3657         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3658
3659         return err;
3660 }
3661
3662 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3663                                   enum switchdev_trans trans, int flags,
3664                                   __be16 vlan_id)
3665 {
3666         u32 in_pport_mask = 0xffffffff;
3667         __be16 eth_type;
3668         const u8 *dst_mac_mask = ff_mac;
3669         __be16 vlan_id_mask = htons(0xffff);
3670         bool copy_to_cpu = false;
3671         int err;
3672
3673         if (ntohs(vlan_id) == 0)
3674                 vlan_id = rocker_port->internal_vlan_id;
3675
3676         eth_type = htons(ETH_P_IP);
3677         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3678                                        rocker_port->pport, in_pport_mask,
3679                                        eth_type, rocker_port->dev->dev_addr,
3680                                        dst_mac_mask, vlan_id, vlan_id_mask,
3681                                        copy_to_cpu, flags);
3682         if (err)
3683                 return err;
3684
3685         eth_type = htons(ETH_P_IPV6);
3686         err = rocker_flow_tbl_term_mac(rocker_port, trans,
3687                                        rocker_port->pport, in_pport_mask,
3688                                        eth_type, rocker_port->dev->dev_addr,
3689                                        dst_mac_mask, vlan_id, vlan_id_mask,
3690                                        copy_to_cpu, flags);
3691
3692         return err;
3693 }
3694
3695 static int rocker_port_fwding(struct rocker_port *rocker_port,
3696                               enum switchdev_trans trans)
3697 {
3698         bool pop_vlan;
3699         u32 out_pport;
3700         __be16 vlan_id;
3701         u16 vid;
3702         int flags = 0;
3703         int err;
3704
3705         /* Port will be forwarding-enabled if its STP state is LEARNING
3706          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3707          * port STP state.  Use L2 interface group on port VLANs as a way
3708          * to toggle port forwarding: if forwarding is disabled, L2
3709          * interface group will not exist.
3710          */
3711
3712         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3713             rocker_port->stp_state != BR_STATE_FORWARDING)
3714                 flags |= ROCKER_OP_FLAG_REMOVE;
3715
3716         out_pport = rocker_port->pport;
3717         for (vid = 1; vid < VLAN_N_VID; vid++) {
3718                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3719                         continue;
3720                 vlan_id = htons(vid);
3721                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3722                 err = rocker_group_l2_interface(rocker_port, trans, flags,
3723                                                 vlan_id, out_pport, pop_vlan);
3724                 if (err) {
3725                         netdev_err(rocker_port->dev,
3726                                    "Error (%d) port VLAN l2 group for pport %d\n",
3727                                    err, out_pport);
3728                         return err;
3729                 }
3730         }
3731
3732         return 0;
3733 }
3734
3735 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3736                                   enum switchdev_trans trans, u8 state)
3737 {
3738         bool want[ROCKER_CTRL_MAX] = { 0, };
3739         bool prev_ctrls[ROCKER_CTRL_MAX];
3740         u8 prev_state;
3741         int flags;
3742         int err;
3743         int i;
3744
3745         if (trans == SWITCHDEV_TRANS_PREPARE) {
3746                 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3747                 prev_state = rocker_port->stp_state;
3748         }
3749
3750         if (rocker_port->stp_state == state)
3751                 return 0;
3752
3753         rocker_port->stp_state = state;
3754
3755         switch (state) {
3756         case BR_STATE_DISABLED:
3757                 /* port is completely disabled */
3758                 break;
3759         case BR_STATE_LISTENING:
3760         case BR_STATE_BLOCKING:
3761                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3762                 break;
3763         case BR_STATE_LEARNING:
3764         case BR_STATE_FORWARDING:
3765                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3766                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3767                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3768                 if (rocker_port_is_bridged(rocker_port))
3769                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3770                 else
3771                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3772                 break;
3773         }
3774
3775         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3776                 if (want[i] != rocker_port->ctrls[i]) {
3777                         flags = (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3778                         err = rocker_port_ctrl(rocker_port, trans, flags,
3779                                                &rocker_ctrls[i]);
3780                         if (err)
3781                                 goto err_out;
3782                         rocker_port->ctrls[i] = want[i];
3783                 }
3784         }
3785
3786         err = rocker_port_fdb_flush(rocker_port, trans);
3787         if (err)
3788                 goto err_out;
3789
3790         err = rocker_port_fwding(rocker_port, trans);
3791
3792 err_out:
3793         if (trans == SWITCHDEV_TRANS_PREPARE) {
3794                 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3795                 rocker_port->stp_state = prev_state;
3796         }
3797
3798         return err;
3799 }
3800
3801 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
3802                                   enum switchdev_trans trans)
3803 {
3804         if (rocker_port_is_bridged(rocker_port))
3805                 /* bridge STP will enable port */
3806                 return 0;
3807
3808         /* port is not bridged, so simulate going to FORWARDING state */
3809         return rocker_port_stp_update(rocker_port, trans, BR_STATE_FORWARDING);
3810 }
3811
3812 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
3813                                    enum switchdev_trans trans)
3814 {
3815         if (rocker_port_is_bridged(rocker_port))
3816                 /* bridge STP will disable port */
3817                 return 0;
3818
3819         /* port is not bridged, so simulate going to DISABLED state */
3820         return rocker_port_stp_update(rocker_port, trans, BR_STATE_DISABLED);
3821 }
3822
3823 static struct rocker_internal_vlan_tbl_entry *
3824 rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3825 {
3826         struct rocker_internal_vlan_tbl_entry *found;
3827
3828         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3829                                entry, ifindex) {
3830                 if (found->ifindex == ifindex)
3831                         return found;
3832         }
3833
3834         return NULL;
3835 }
3836
3837 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3838                                                enum switchdev_trans trans,
3839                                                int ifindex)
3840 {
3841         struct rocker *rocker = rocker_port->rocker;
3842         struct rocker_internal_vlan_tbl_entry *entry;
3843         struct rocker_internal_vlan_tbl_entry *found;
3844         unsigned long lock_flags;
3845         int i;
3846
3847         entry = rocker_port_kzalloc(rocker_port, trans, sizeof(*entry));
3848         if (!entry)
3849                 return 0;
3850
3851         entry->ifindex = ifindex;
3852
3853         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3854
3855         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3856         if (found) {
3857                 rocker_port_kfree(rocker_port, trans, entry);
3858                 goto found;
3859         }
3860
3861         found = entry;
3862         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3863
3864         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3865                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3866                         continue;
3867                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3868                 goto found;
3869         }
3870
3871         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3872
3873 found:
3874         found->ref_count++;
3875         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3876
3877         return found->vlan_id;
3878 }
3879
3880 static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3881                                              enum switchdev_trans trans,
3882                                              int ifindex)
3883 {
3884         struct rocker *rocker = rocker_port->rocker;
3885         struct rocker_internal_vlan_tbl_entry *found;
3886         unsigned long lock_flags;
3887         unsigned long bit;
3888
3889         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3890
3891         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3892         if (!found) {
3893                 netdev_err(rocker_port->dev,
3894                            "ifindex (%d) not found in internal VLAN tbl\n",
3895                            ifindex);
3896                 goto not_found;
3897         }
3898
3899         if (--found->ref_count <= 0) {
3900                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3901                 clear_bit(bit, rocker->internal_vlan_bitmap);
3902                 hash_del(&found->entry);
3903                 rocker_port_kfree(rocker_port, trans, found);
3904         }
3905
3906 not_found:
3907         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3908 }
3909
3910 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
3911                                 enum switchdev_trans trans, __be32 dst,
3912                                 int dst_len, struct fib_info *fi, u32 tb_id,
3913                                 int flags)
3914 {
3915         struct fib_nh *nh;
3916         __be16 eth_type = htons(ETH_P_IP);
3917         __be32 dst_mask = inet_make_mask(dst_len);
3918         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3919         u32 priority = fi->fib_priority;
3920         enum rocker_of_dpa_table_id goto_tbl =
3921                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3922         u32 group_id;
3923         bool nh_on_port;
3924         bool has_gw;
3925         u32 index;
3926         int err;
3927
3928         /* XXX support ECMP */
3929
3930         nh = fi->fib_nh;
3931         nh_on_port = (fi->fib_dev == rocker_port->dev);
3932         has_gw = !!nh->nh_gw;
3933
3934         if (has_gw && nh_on_port) {
3935                 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
3936                                           nh->nh_gw, &index);
3937                 if (err)
3938                         return err;
3939
3940                 group_id = ROCKER_GROUP_L3_UNICAST(index);
3941         } else {
3942                 /* Send to CPU for processing */
3943                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3944         }
3945
3946         err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
3947                                              dst_mask, priority, goto_tbl,
3948                                              group_id, flags);
3949         if (err)
3950                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3951                            err, &dst);
3952
3953         return err;
3954 }
3955
3956 /*****************
3957  * Net device ops
3958  *****************/
3959
3960 static int rocker_port_open(struct net_device *dev)
3961 {
3962         struct rocker_port *rocker_port = netdev_priv(dev);
3963         int err;
3964
3965         err = rocker_port_dma_rings_init(rocker_port);
3966         if (err)
3967                 return err;
3968
3969         err = request_irq(rocker_msix_tx_vector(rocker_port),
3970                           rocker_tx_irq_handler, 0,
3971                           rocker_driver_name, rocker_port);
3972         if (err) {
3973                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3974                 goto err_request_tx_irq;
3975         }
3976
3977         err = request_irq(rocker_msix_rx_vector(rocker_port),
3978                           rocker_rx_irq_handler, 0,
3979                           rocker_driver_name, rocker_port);
3980         if (err) {
3981                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3982                 goto err_request_rx_irq;
3983         }
3984
3985         err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE);
3986         if (err)
3987                 goto err_fwd_enable;
3988
3989         napi_enable(&rocker_port->napi_tx);
3990         napi_enable(&rocker_port->napi_rx);
3991         rocker_port_set_enable(rocker_port, true);
3992         netif_start_queue(dev);
3993         return 0;
3994
3995 err_fwd_enable:
3996         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3997 err_request_rx_irq:
3998         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3999 err_request_tx_irq:
4000         rocker_port_dma_rings_fini(rocker_port);
4001         return err;
4002 }
4003
4004 static int rocker_port_stop(struct net_device *dev)
4005 {
4006         struct rocker_port *rocker_port = netdev_priv(dev);
4007
4008         netif_stop_queue(dev);
4009         rocker_port_set_enable(rocker_port, false);
4010         napi_disable(&rocker_port->napi_rx);
4011         napi_disable(&rocker_port->napi_tx);
4012         rocker_port_fwd_disable(rocker_port, SWITCHDEV_TRANS_NONE);
4013         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4014         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4015         rocker_port_dma_rings_fini(rocker_port);
4016
4017         return 0;
4018 }
4019
4020 static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
4021                                        struct rocker_desc_info *desc_info)
4022 {
4023         struct rocker *rocker = rocker_port->rocker;
4024         struct pci_dev *pdev = rocker->pdev;
4025         struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4026         struct rocker_tlv *attr;
4027         int rem;
4028
4029         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4030         if (!attrs[ROCKER_TLV_TX_FRAGS])
4031                 return;
4032         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4033                 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4034                 dma_addr_t dma_handle;
4035                 size_t len;
4036
4037                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4038                         continue;
4039                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4040                                         attr);
4041                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4042                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4043                         continue;
4044                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4045                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4046                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4047         }
4048 }
4049
4050 static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
4051                                        struct rocker_desc_info *desc_info,
4052                                        char *buf, size_t buf_len)
4053 {
4054         struct rocker *rocker = rocker_port->rocker;
4055         struct pci_dev *pdev = rocker->pdev;
4056         dma_addr_t dma_handle;
4057         struct rocker_tlv *frag;
4058
4059         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4060         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4061                 if (net_ratelimit())
4062                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4063                 return -EIO;
4064         }
4065         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4066         if (!frag)
4067                 goto unmap_frag;
4068         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4069                                dma_handle))
4070                 goto nest_cancel;
4071         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4072                                buf_len))
4073                 goto nest_cancel;
4074         rocker_tlv_nest_end(desc_info, frag);
4075         return 0;
4076
4077 nest_cancel:
4078         rocker_tlv_nest_cancel(desc_info, frag);
4079 unmap_frag:
4080         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4081         return -EMSGSIZE;
4082 }
4083
4084 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4085 {
4086         struct rocker_port *rocker_port = netdev_priv(dev);
4087         struct rocker *rocker = rocker_port->rocker;
4088         struct rocker_desc_info *desc_info;
4089         struct rocker_tlv *frags;
4090         int i;
4091         int err;
4092
4093         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4094         if (unlikely(!desc_info)) {
4095                 if (net_ratelimit())
4096                         netdev_err(dev, "tx ring full when queue awake\n");
4097                 return NETDEV_TX_BUSY;
4098         }
4099
4100         rocker_desc_cookie_ptr_set(desc_info, skb);
4101
4102         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4103         if (!frags)
4104                 goto out;
4105         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4106                                           skb->data, skb_headlen(skb));
4107         if (err)
4108                 goto nest_cancel;
4109         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
4110                 goto nest_cancel;
4111
4112         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4113                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4114
4115                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4116                                                   skb_frag_address(frag),
4117                                                   skb_frag_size(frag));
4118                 if (err)
4119                         goto unmap_frags;
4120         }
4121         rocker_tlv_nest_end(desc_info, frags);
4122
4123         rocker_desc_gen_clear(desc_info);
4124         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4125
4126         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4127         if (!desc_info)
4128                 netif_stop_queue(dev);
4129
4130         return NETDEV_TX_OK;
4131
4132 unmap_frags:
4133         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4134 nest_cancel:
4135         rocker_tlv_nest_cancel(desc_info, frags);
4136 out:
4137         dev_kfree_skb(skb);
4138         dev->stats.tx_dropped++;
4139
4140         return NETDEV_TX_OK;
4141 }
4142
4143 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4144 {
4145         struct sockaddr *addr = p;
4146         struct rocker_port *rocker_port = netdev_priv(dev);
4147         int err;
4148
4149         if (!is_valid_ether_addr(addr->sa_data))
4150                 return -EADDRNOTAVAIL;
4151
4152         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4153         if (err)
4154                 return err;
4155         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4156         return 0;
4157 }
4158
4159 static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
4160                                        __be16 proto, u16 vid)
4161 {
4162         struct rocker_port *rocker_port = netdev_priv(dev);
4163         int err;
4164
4165         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, vid);
4166         if (err)
4167                 return err;
4168
4169         return rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4170                                       0, htons(vid));
4171 }
4172
4173 static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
4174                                         __be16 proto, u16 vid)
4175 {
4176         struct rocker_port *rocker_port = netdev_priv(dev);
4177         int err;
4178
4179         err = rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4180                                      ROCKER_OP_FLAG_REMOVE, htons(vid));
4181         if (err)
4182                 return err;
4183
4184         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
4185                                 ROCKER_OP_FLAG_REMOVE, vid);
4186 }
4187
4188 static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
4189                                struct net_device *dev,
4190                                const unsigned char *addr, u16 vid,
4191                                u16 nlm_flags)
4192 {
4193         struct rocker_port *rocker_port = netdev_priv(dev);
4194         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4195         int flags = 0;
4196
4197         if (!rocker_port_is_bridged(rocker_port))
4198                 return -EINVAL;
4199
4200         return rocker_port_fdb(rocker_port, SWITCHDEV_TRANS_NONE,
4201                                addr, vlan_id, flags);
4202 }
4203
4204 static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
4205                                struct net_device *dev,
4206                                const unsigned char *addr, u16 vid)
4207 {
4208         struct rocker_port *rocker_port = netdev_priv(dev);
4209         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4210         int flags = ROCKER_OP_FLAG_REMOVE;
4211
4212         if (!rocker_port_is_bridged(rocker_port))
4213                 return -EINVAL;
4214
4215         return rocker_port_fdb(rocker_port, SWITCHDEV_TRANS_NONE,
4216                                addr, vlan_id, flags);
4217 }
4218
4219 static int rocker_fdb_fill_info(struct sk_buff *skb,
4220                                 struct rocker_port *rocker_port,
4221                                 const unsigned char *addr, u16 vid,
4222                                 u32 portid, u32 seq, int type,
4223                                 unsigned int flags)
4224 {
4225         struct nlmsghdr *nlh;
4226         struct ndmsg *ndm;
4227
4228         nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
4229         if (!nlh)
4230                 return -EMSGSIZE;
4231
4232         ndm = nlmsg_data(nlh);
4233         ndm->ndm_family  = AF_BRIDGE;
4234         ndm->ndm_pad1    = 0;
4235         ndm->ndm_pad2    = 0;
4236         ndm->ndm_flags   = NTF_SELF;
4237         ndm->ndm_type    = 0;
4238         ndm->ndm_ifindex = rocker_port->dev->ifindex;
4239         ndm->ndm_state   = NUD_REACHABLE;
4240
4241         if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
4242                 goto nla_put_failure;
4243
4244         if (vid && nla_put_u16(skb, NDA_VLAN, vid))
4245                 goto nla_put_failure;
4246
4247         nlmsg_end(skb, nlh);
4248         return 0;
4249
4250 nla_put_failure:
4251         nlmsg_cancel(skb, nlh);
4252         return -EMSGSIZE;
4253 }
4254
4255 static int rocker_port_fdb_dump(struct sk_buff *skb,
4256                                 struct netlink_callback *cb,
4257                                 struct net_device *dev,
4258                                 struct net_device *filter_dev,
4259                                 int idx)
4260 {
4261         struct rocker_port *rocker_port = netdev_priv(dev);
4262         struct rocker *rocker = rocker_port->rocker;
4263         struct rocker_fdb_tbl_entry *found;
4264         struct hlist_node *tmp;
4265         int bkt;
4266         unsigned long lock_flags;
4267         const unsigned char *addr;
4268         u16 vid;
4269         int err;
4270
4271         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4272         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4273                 if (found->key.pport != rocker_port->pport)
4274                         continue;
4275                 if (idx < cb->args[0])
4276                         goto skip;
4277                 addr = found->key.addr;
4278                 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
4279                 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
4280                                            NETLINK_CB(cb->skb).portid,
4281                                            cb->nlh->nlmsg_seq,
4282                                            RTM_NEWNEIGH, NLM_F_MULTI);
4283                 if (err < 0)
4284                         break;
4285 skip:
4286                 ++idx;
4287         }
4288         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4289         return idx;
4290 }
4291
4292 static int rocker_port_bridge_setlink(struct net_device *dev,
4293                                       struct nlmsghdr *nlh, u16 flags)
4294 {
4295         struct rocker_port *rocker_port = netdev_priv(dev);
4296         struct nlattr *protinfo;
4297         struct nlattr *attr;
4298         int err;
4299
4300         protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
4301                                    IFLA_PROTINFO);
4302         if (protinfo) {
4303                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING);
4304                 if (attr) {
4305                         if (nla_len(attr) < sizeof(u8))
4306                                 return -EINVAL;
4307
4308                         if (nla_get_u8(attr))
4309                                 rocker_port->brport_flags |= BR_LEARNING;
4310                         else
4311                                 rocker_port->brport_flags &= ~BR_LEARNING;
4312                         err = rocker_port_set_learning(rocker_port,
4313                                                        SWITCHDEV_TRANS_NONE);
4314                         if (err)
4315                                 return err;
4316                 }
4317                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC);
4318                 if (attr) {
4319                         if (nla_len(attr) < sizeof(u8))
4320                                 return -EINVAL;
4321
4322                         if (nla_get_u8(attr))
4323                                 rocker_port->brport_flags |= BR_LEARNING_SYNC;
4324                         else
4325                                 rocker_port->brport_flags &= ~BR_LEARNING_SYNC;
4326                 }
4327         }
4328
4329         return 0;
4330 }
4331
4332 static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4333                                       struct net_device *dev,
4334                                       u32 filter_mask, int nlflags)
4335 {
4336         struct rocker_port *rocker_port = netdev_priv(dev);
4337         u16 mode = BRIDGE_MODE_UNDEF;
4338         u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
4339
4340         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
4341                                        rocker_port->brport_flags, mask,
4342                                        nlflags);
4343 }
4344
4345 static int rocker_port_get_phys_port_name(struct net_device *dev,
4346                                           char *buf, size_t len)
4347 {
4348         struct rocker_port *rocker_port = netdev_priv(dev);
4349         struct port_name name = { .buf = buf, .len = len };
4350         int err;
4351
4352         err = rocker_cmd_exec(rocker_port->rocker, rocker_port,
4353                               SWITCHDEV_TRANS_NONE,
4354                               rocker_cmd_get_port_settings_prep, NULL,
4355                               rocker_cmd_get_port_settings_phys_name_proc,
4356                               &name);
4357
4358         return err ? -EOPNOTSUPP : 0;
4359 }
4360
4361 static const struct net_device_ops rocker_port_netdev_ops = {
4362         .ndo_open                       = rocker_port_open,
4363         .ndo_stop                       = rocker_port_stop,
4364         .ndo_start_xmit                 = rocker_port_xmit,
4365         .ndo_set_mac_address            = rocker_port_set_mac_address,
4366         .ndo_vlan_rx_add_vid            = rocker_port_vlan_rx_add_vid,
4367         .ndo_vlan_rx_kill_vid           = rocker_port_vlan_rx_kill_vid,
4368         .ndo_fdb_add                    = rocker_port_fdb_add,
4369         .ndo_fdb_del                    = rocker_port_fdb_del,
4370         .ndo_fdb_dump                   = rocker_port_fdb_dump,
4371         .ndo_bridge_setlink             = rocker_port_bridge_setlink,
4372         .ndo_bridge_getlink             = rocker_port_bridge_getlink,
4373         .ndo_get_phys_port_name         = rocker_port_get_phys_port_name,
4374 };
4375
4376 /********************
4377  * swdev interface
4378  ********************/
4379
4380 static int rocker_port_attr_get(struct net_device *dev,
4381                                 struct switchdev_attr *attr)
4382 {
4383         struct rocker_port *rocker_port = netdev_priv(dev);
4384         struct rocker *rocker = rocker_port->rocker;
4385
4386         switch (attr->id) {
4387         case SWITCHDEV_ATTR_PORT_PARENT_ID:
4388                 attr->ppid.id_len = sizeof(rocker->hw.id);
4389                 memcpy(&attr->ppid.id, &rocker->hw.id, attr->ppid.id_len);
4390                 break;
4391         default:
4392                 return -EOPNOTSUPP;
4393         }
4394
4395         return 0;
4396 }
4397
4398 static int rocker_port_switchdev_port_stp_update(struct net_device *dev,
4399                                                  u8 state)
4400 {
4401         struct rocker_port *rocker_port = netdev_priv(dev);
4402
4403         return rocker_port_stp_update(rocker_port, SWITCHDEV_TRANS_NONE, state);
4404 }
4405
4406 static void rocker_port_trans_abort(struct rocker_port *rocker_port)
4407 {
4408         struct list_head *mem, *tmp;
4409
4410         list_for_each_safe(mem, tmp, &rocker_port->trans_mem) {
4411                 list_del(mem);
4412                 kfree(mem);
4413         }
4414 }
4415
4416 static int rocker_port_attr_set(struct net_device *dev,
4417                                 struct switchdev_attr *attr)
4418 {
4419         struct rocker_port *rocker_port = netdev_priv(dev);
4420         int err = 0;
4421
4422         switch (attr->trans) {
4423         case SWITCHDEV_TRANS_PREPARE:
4424                 BUG_ON(!list_empty(&rocker_port->trans_mem));
4425                 break;
4426         case SWITCHDEV_TRANS_ABORT:
4427                 rocker_port_trans_abort(rocker_port);
4428                 return 0;
4429         default:
4430                 break;
4431         }
4432
4433         switch (attr->id) {
4434         default:
4435                 err = -EOPNOTSUPP;
4436                 break;
4437         }
4438
4439         return err;
4440 }
4441
4442 static int rocker_port_switchdev_fib_ipv4_add(struct net_device *dev,
4443                                               __be32 dst, int dst_len,
4444                                               struct fib_info *fi,
4445                                               u8 tos, u8 type,
4446                                               u32 nlflags, u32 tb_id)
4447 {
4448         struct rocker_port *rocker_port = netdev_priv(dev);
4449         int flags = 0;
4450
4451         return rocker_port_fib_ipv4(rocker_port, SWITCHDEV_TRANS_NONE,
4452                                     dst, dst_len, fi, tb_id, flags);
4453 }
4454
4455 static int rocker_port_switchdev_fib_ipv4_del(struct net_device *dev,
4456                                               __be32 dst, int dst_len,
4457                                               struct fib_info *fi,
4458                                               u8 tos, u8 type, u32 tb_id)
4459 {
4460         struct rocker_port *rocker_port = netdev_priv(dev);
4461         int flags = ROCKER_OP_FLAG_REMOVE;
4462
4463         return rocker_port_fib_ipv4(rocker_port, SWITCHDEV_TRANS_NONE,
4464                                     dst, dst_len, fi, tb_id, flags);
4465 }
4466
4467 static const struct switchdev_ops rocker_port_switchdev_ops = {
4468         .switchdev_port_attr_get        = rocker_port_attr_get,
4469         .switchdev_port_stp_update      = rocker_port_switchdev_port_stp_update,
4470         .switchdev_fib_ipv4_add         = rocker_port_switchdev_fib_ipv4_add,
4471         .switchdev_fib_ipv4_del         = rocker_port_switchdev_fib_ipv4_del,
4472 };
4473
4474 /********************
4475  * ethtool interface
4476  ********************/
4477
4478 static int rocker_port_get_settings(struct net_device *dev,
4479                                     struct ethtool_cmd *ecmd)
4480 {
4481         struct rocker_port *rocker_port = netdev_priv(dev);
4482
4483         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4484 }
4485
4486 static int rocker_port_set_settings(struct net_device *dev,
4487                                     struct ethtool_cmd *ecmd)
4488 {
4489         struct rocker_port *rocker_port = netdev_priv(dev);
4490
4491         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4492 }
4493
4494 static void rocker_port_get_drvinfo(struct net_device *dev,
4495                                     struct ethtool_drvinfo *drvinfo)
4496 {
4497         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4498         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4499 }
4500
4501 static struct rocker_port_stats {
4502         char str[ETH_GSTRING_LEN];
4503         int type;
4504 } rocker_port_stats[] = {
4505         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4506         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4507         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4508         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4509
4510         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4511         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4512         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4513         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4514 };
4515
4516 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4517
4518 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4519                                     u8 *data)
4520 {
4521         u8 *p = data;
4522         int i;
4523
4524         switch (stringset) {
4525         case ETH_SS_STATS:
4526                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4527                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4528                         p += ETH_GSTRING_LEN;
4529                 }
4530                 break;
4531         }
4532 }
4533
4534 static int
4535 rocker_cmd_get_port_stats_prep(struct rocker *rocker,
4536                                struct rocker_port *rocker_port,
4537                                struct rocker_desc_info *desc_info,
4538                                void *priv)
4539 {
4540         struct rocker_tlv *cmd_stats;
4541
4542         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4543                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4544                 return -EMSGSIZE;
4545
4546         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4547         if (!cmd_stats)
4548                 return -EMSGSIZE;
4549
4550         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4551                                rocker_port->pport))
4552                 return -EMSGSIZE;
4553
4554         rocker_tlv_nest_end(desc_info, cmd_stats);
4555
4556         return 0;
4557 }
4558
4559 static int
4560 rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker,
4561                                        struct rocker_port *rocker_port,
4562                                        struct rocker_desc_info *desc_info,
4563                                        void *priv)
4564 {
4565         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4566         struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4567         struct rocker_tlv *pattr;
4568         u32 pport;
4569         u64 *data = priv;
4570         int i;
4571
4572         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4573
4574         if (!attrs[ROCKER_TLV_CMD_INFO])
4575                 return -EIO;
4576
4577         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4578                                 attrs[ROCKER_TLV_CMD_INFO]);
4579
4580         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4581                 return -EIO;
4582
4583         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4584         if (pport != rocker_port->pport)
4585                 return -EIO;
4586
4587         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4588                 pattr = stats_attrs[rocker_port_stats[i].type];
4589                 if (!pattr)
4590                         continue;
4591
4592                 data[i] = rocker_tlv_get_u64(pattr);
4593         }
4594
4595         return 0;
4596 }
4597
4598 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4599                                              void *priv)
4600 {
4601         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
4602                                SWITCHDEV_TRANS_NONE,
4603                                rocker_cmd_get_port_stats_prep, NULL,
4604                                rocker_cmd_get_port_stats_ethtool_proc,
4605                                priv);
4606 }
4607
4608 static void rocker_port_get_stats(struct net_device *dev,
4609                                   struct ethtool_stats *stats, u64 *data)
4610 {
4611         struct rocker_port *rocker_port = netdev_priv(dev);
4612
4613         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4614                 int i;
4615
4616                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4617                         data[i] = 0;
4618         }
4619
4620         return;
4621 }
4622
4623 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4624 {
4625         switch (sset) {
4626         case ETH_SS_STATS:
4627                 return ROCKER_PORT_STATS_LEN;
4628         default:
4629                 return -EOPNOTSUPP;
4630         }
4631 }
4632
4633 static const struct ethtool_ops rocker_port_ethtool_ops = {
4634         .get_settings           = rocker_port_get_settings,
4635         .set_settings           = rocker_port_set_settings,
4636         .get_drvinfo            = rocker_port_get_drvinfo,
4637         .get_link               = ethtool_op_get_link,
4638         .get_strings            = rocker_port_get_strings,
4639         .get_ethtool_stats      = rocker_port_get_stats,
4640         .get_sset_count         = rocker_port_get_sset_count,
4641 };
4642
4643 /*****************
4644  * NAPI interface
4645  *****************/
4646
4647 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4648 {
4649         return container_of(napi, struct rocker_port, napi_tx);
4650 }
4651
4652 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4653 {
4654         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4655         struct rocker *rocker = rocker_port->rocker;
4656         struct rocker_desc_info *desc_info;
4657         u32 credits = 0;
4658         int err;
4659
4660         /* Cleanup tx descriptors */
4661         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4662                 struct sk_buff *skb;
4663
4664                 err = rocker_desc_err(desc_info);
4665                 if (err && net_ratelimit())
4666                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4667                                    err);
4668                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4669
4670                 skb = rocker_desc_cookie_ptr_get(desc_info);
4671                 if (err == 0) {
4672                         rocker_port->dev->stats.tx_packets++;
4673                         rocker_port->dev->stats.tx_bytes += skb->len;
4674                 } else
4675                         rocker_port->dev->stats.tx_errors++;
4676
4677                 dev_kfree_skb_any(skb);
4678                 credits++;
4679         }
4680
4681         if (credits && netif_queue_stopped(rocker_port->dev))
4682                 netif_wake_queue(rocker_port->dev);
4683
4684         napi_complete(napi);
4685         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4686
4687         return 0;
4688 }
4689
4690 static int rocker_port_rx_proc(struct rocker *rocker,
4691                                struct rocker_port *rocker_port,
4692                                struct rocker_desc_info *desc_info)
4693 {
4694         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4695         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4696         size_t rx_len;
4697
4698         if (!skb)
4699                 return -ENOENT;
4700
4701         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4702         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4703                 return -EINVAL;
4704
4705         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4706
4707         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4708         skb_put(skb, rx_len);
4709         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4710
4711         rocker_port->dev->stats.rx_packets++;
4712         rocker_port->dev->stats.rx_bytes += skb->len;
4713
4714         netif_receive_skb(skb);
4715
4716         return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
4717 }
4718
4719 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4720 {
4721         return container_of(napi, struct rocker_port, napi_rx);
4722 }
4723
4724 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4725 {
4726         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4727         struct rocker *rocker = rocker_port->rocker;
4728         struct rocker_desc_info *desc_info;
4729         u32 credits = 0;
4730         int err;
4731
4732         /* Process rx descriptors */
4733         while (credits < budget &&
4734                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4735                 err = rocker_desc_err(desc_info);
4736                 if (err) {
4737                         if (net_ratelimit())
4738                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4739                                            err);
4740                 } else {
4741                         err = rocker_port_rx_proc(rocker, rocker_port,
4742                                                   desc_info);
4743                         if (err && net_ratelimit())
4744                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4745                                            err);
4746                 }
4747                 if (err)
4748                         rocker_port->dev->stats.rx_errors++;
4749
4750                 rocker_desc_gen_clear(desc_info);
4751                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4752                 credits++;
4753         }
4754
4755         if (credits < budget)
4756                 napi_complete(napi);
4757
4758         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4759
4760         return credits;
4761 }
4762
4763 /*****************
4764  * PCI driver ops
4765  *****************/
4766
4767 static void rocker_carrier_init(struct rocker_port *rocker_port)
4768 {
4769         struct rocker *rocker = rocker_port->rocker;
4770         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4771         bool link_up;
4772
4773         link_up = link_status & (1 << rocker_port->pport);
4774         if (link_up)
4775                 netif_carrier_on(rocker_port->dev);
4776         else
4777                 netif_carrier_off(rocker_port->dev);
4778 }
4779
4780 static void rocker_remove_ports(struct rocker *rocker)
4781 {
4782         struct rocker_port *rocker_port;
4783         int i;
4784
4785         for (i = 0; i < rocker->port_count; i++) {
4786                 rocker_port = rocker->ports[i];
4787                 rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
4788                                    ROCKER_OP_FLAG_REMOVE);
4789                 unregister_netdev(rocker_port->dev);
4790         }
4791         kfree(rocker->ports);
4792 }
4793
4794 static void rocker_port_dev_addr_init(struct rocker *rocker,
4795                                       struct rocker_port *rocker_port)
4796 {
4797         struct pci_dev *pdev = rocker->pdev;
4798         int err;
4799
4800         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4801                                                    rocker_port->dev->dev_addr);
4802         if (err) {
4803                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4804                 eth_hw_addr_random(rocker_port->dev);
4805         }
4806 }
4807
4808 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4809 {
4810         struct pci_dev *pdev = rocker->pdev;
4811         struct rocker_port *rocker_port;
4812         struct net_device *dev;
4813         int err;
4814
4815         dev = alloc_etherdev(sizeof(struct rocker_port));
4816         if (!dev)
4817                 return -ENOMEM;
4818         rocker_port = netdev_priv(dev);
4819         rocker_port->dev = dev;
4820         rocker_port->rocker = rocker;
4821         rocker_port->port_number = port_number;
4822         rocker_port->pport = port_number + 1;
4823         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4824         INIT_LIST_HEAD(&rocker_port->trans_mem);
4825
4826         rocker_port_dev_addr_init(rocker, rocker_port);
4827         dev->netdev_ops = &rocker_port_netdev_ops;
4828         dev->ethtool_ops = &rocker_port_ethtool_ops;
4829         dev->switchdev_ops = &rocker_port_switchdev_ops;
4830         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4831                        NAPI_POLL_WEIGHT);
4832         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4833                        NAPI_POLL_WEIGHT);
4834         rocker_carrier_init(rocker_port);
4835
4836         dev->features |= NETIF_F_NETNS_LOCAL |
4837                          NETIF_F_HW_VLAN_CTAG_FILTER |
4838                          NETIF_F_HW_SWITCH_OFFLOAD;
4839
4840         err = register_netdev(dev);
4841         if (err) {
4842                 dev_err(&pdev->dev, "register_netdev failed\n");
4843                 goto err_register_netdev;
4844         }
4845         rocker->ports[port_number] = rocker_port;
4846
4847         rocker_port_set_learning(rocker_port, SWITCHDEV_TRANS_NONE);
4848
4849         rocker_port->internal_vlan_id =
4850                 rocker_port_internal_vlan_id_get(rocker_port,
4851                                                  SWITCHDEV_TRANS_NONE,
4852                                                  dev->ifindex);
4853         err = rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE, 0);
4854         if (err) {
4855                 dev_err(&pdev->dev, "install ig port table failed\n");
4856                 goto err_port_ig_tbl;
4857         }
4858
4859         return 0;
4860
4861 err_port_ig_tbl:
4862         unregister_netdev(dev);
4863 err_register_netdev:
4864         free_netdev(dev);
4865         return err;
4866 }
4867
4868 static int rocker_probe_ports(struct rocker *rocker)
4869 {
4870         int i;
4871         size_t alloc_size;
4872         int err;
4873
4874         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4875         rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
4876         if (!rocker->ports)
4877                 return -ENOMEM;
4878         for (i = 0; i < rocker->port_count; i++) {
4879                 err = rocker_probe_port(rocker, i);
4880                 if (err)
4881                         goto remove_ports;
4882         }
4883         return 0;
4884
4885 remove_ports:
4886         rocker_remove_ports(rocker);
4887         return err;
4888 }
4889
4890 static int rocker_msix_init(struct rocker *rocker)
4891 {
4892         struct pci_dev *pdev = rocker->pdev;
4893         int msix_entries;
4894         int i;
4895         int err;
4896
4897         msix_entries = pci_msix_vec_count(pdev);
4898         if (msix_entries < 0)
4899                 return msix_entries;
4900
4901         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4902                 return -EINVAL;
4903
4904         rocker->msix_entries = kmalloc_array(msix_entries,
4905                                              sizeof(struct msix_entry),
4906                                              GFP_KERNEL);
4907         if (!rocker->msix_entries)
4908                 return -ENOMEM;
4909
4910         for (i = 0; i < msix_entries; i++)
4911                 rocker->msix_entries[i].entry = i;
4912
4913         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4914         if (err < 0)
4915                 goto err_enable_msix;
4916
4917         return 0;
4918
4919 err_enable_msix:
4920         kfree(rocker->msix_entries);
4921         return err;
4922 }
4923
4924 static void rocker_msix_fini(struct rocker *rocker)
4925 {
4926         pci_disable_msix(rocker->pdev);
4927         kfree(rocker->msix_entries);
4928 }
4929
4930 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4931 {
4932         struct rocker *rocker;
4933         int err;
4934
4935         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4936         if (!rocker)
4937                 return -ENOMEM;
4938
4939         err = pci_enable_device(pdev);
4940         if (err) {
4941                 dev_err(&pdev->dev, "pci_enable_device failed\n");
4942                 goto err_pci_enable_device;
4943         }
4944
4945         err = pci_request_regions(pdev, rocker_driver_name);
4946         if (err) {
4947                 dev_err(&pdev->dev, "pci_request_regions failed\n");
4948                 goto err_pci_request_regions;
4949         }
4950
4951         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4952         if (!err) {
4953                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4954                 if (err) {
4955                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4956                         goto err_pci_set_dma_mask;
4957                 }
4958         } else {
4959                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4960                 if (err) {
4961                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
4962                         goto err_pci_set_dma_mask;
4963                 }
4964         }
4965
4966         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
4967                 dev_err(&pdev->dev, "invalid PCI region size\n");
4968                 err = -EINVAL;
4969                 goto err_pci_resource_len_check;
4970         }
4971
4972         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
4973                                   pci_resource_len(pdev, 0));
4974         if (!rocker->hw_addr) {
4975                 dev_err(&pdev->dev, "ioremap failed\n");
4976                 err = -EIO;
4977                 goto err_ioremap;
4978         }
4979         pci_set_master(pdev);
4980
4981         rocker->pdev = pdev;
4982         pci_set_drvdata(pdev, rocker);
4983
4984         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
4985
4986         err = rocker_msix_init(rocker);
4987         if (err) {
4988                 dev_err(&pdev->dev, "MSI-X init failed\n");
4989                 goto err_msix_init;
4990         }
4991
4992         err = rocker_basic_hw_test(rocker);
4993         if (err) {
4994                 dev_err(&pdev->dev, "basic hw test failed\n");
4995                 goto err_basic_hw_test;
4996         }
4997
4998         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4999
5000         err = rocker_dma_rings_init(rocker);
5001         if (err)
5002                 goto err_dma_rings_init;
5003
5004         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5005                           rocker_cmd_irq_handler, 0,
5006                           rocker_driver_name, rocker);
5007         if (err) {
5008                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5009                 goto err_request_cmd_irq;
5010         }
5011
5012         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5013                           rocker_event_irq_handler, 0,
5014                           rocker_driver_name, rocker);
5015         if (err) {
5016                 dev_err(&pdev->dev, "cannot assign event irq\n");
5017                 goto err_request_event_irq;
5018         }
5019
5020         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5021
5022         err = rocker_init_tbls(rocker);
5023         if (err) {
5024                 dev_err(&pdev->dev, "cannot init rocker tables\n");
5025                 goto err_init_tbls;
5026         }
5027
5028         err = rocker_probe_ports(rocker);
5029         if (err) {
5030                 dev_err(&pdev->dev, "failed to probe ports\n");
5031                 goto err_probe_ports;
5032         }
5033
5034         dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
5035
5036         return 0;
5037
5038 err_probe_ports:
5039         rocker_free_tbls(rocker);
5040 err_init_tbls:
5041         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5042 err_request_event_irq:
5043         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5044 err_request_cmd_irq:
5045         rocker_dma_rings_fini(rocker);
5046 err_dma_rings_init:
5047 err_basic_hw_test:
5048         rocker_msix_fini(rocker);
5049 err_msix_init:
5050         iounmap(rocker->hw_addr);
5051 err_ioremap:
5052 err_pci_resource_len_check:
5053 err_pci_set_dma_mask:
5054         pci_release_regions(pdev);
5055 err_pci_request_regions:
5056         pci_disable_device(pdev);
5057 err_pci_enable_device:
5058         kfree(rocker);
5059         return err;
5060 }
5061
5062 static void rocker_remove(struct pci_dev *pdev)
5063 {
5064         struct rocker *rocker = pci_get_drvdata(pdev);
5065
5066         rocker_free_tbls(rocker);
5067         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5068         rocker_remove_ports(rocker);
5069         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5070         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5071         rocker_dma_rings_fini(rocker);
5072         rocker_msix_fini(rocker);
5073         iounmap(rocker->hw_addr);
5074         pci_release_regions(rocker->pdev);
5075         pci_disable_device(rocker->pdev);
5076         kfree(rocker);
5077 }
5078
5079 static struct pci_driver rocker_pci_driver = {
5080         .name           = rocker_driver_name,
5081         .id_table       = rocker_pci_id_table,
5082         .probe          = rocker_probe,
5083         .remove         = rocker_remove,
5084 };
5085
5086 /************************************
5087  * Net device notifier event handler
5088  ************************************/
5089
5090 static bool rocker_port_dev_check(struct net_device *dev)
5091 {
5092         return dev->netdev_ops == &rocker_port_netdev_ops;
5093 }
5094
5095 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5096                                    struct net_device *bridge)
5097 {
5098         int err;
5099
5100         rocker_port_internal_vlan_id_put(rocker_port, SWITCHDEV_TRANS_NONE,
5101                                          rocker_port->dev->ifindex);
5102
5103         rocker_port->bridge_dev = bridge;
5104
5105         /* Use bridge internal VLAN ID for untagged pkts */
5106         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
5107                                ROCKER_OP_FLAG_REMOVE, 0);
5108         if (err)
5109                 return err;
5110         rocker_port->internal_vlan_id =
5111                 rocker_port_internal_vlan_id_get(rocker_port,
5112                                                  SWITCHDEV_TRANS_NONE,
5113                                                  bridge->ifindex);
5114         return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, 0);
5115 }
5116
5117 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5118 {
5119         int err;
5120
5121         rocker_port_internal_vlan_id_put(rocker_port, SWITCHDEV_TRANS_NONE,
5122                                          rocker_port->bridge_dev->ifindex);
5123
5124         rocker_port->bridge_dev = NULL;
5125
5126         /* Use port internal VLAN ID for untagged pkts */
5127         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
5128                                ROCKER_OP_FLAG_REMOVE, 0);
5129         if (err)
5130                 return err;
5131         rocker_port->internal_vlan_id =
5132                 rocker_port_internal_vlan_id_get(rocker_port,
5133                                                  SWITCHDEV_TRANS_NONE,
5134                                                  rocker_port->dev->ifindex);
5135         err = rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE, 0, 0);
5136         if (err)
5137                 return err;
5138
5139         if (rocker_port->dev->flags & IFF_UP)
5140                 err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE);
5141
5142         return err;
5143 }
5144
5145 static int rocker_port_master_changed(struct net_device *dev)
5146 {
5147         struct rocker_port *rocker_port = netdev_priv(dev);
5148         struct net_device *master = netdev_master_upper_dev_get(dev);
5149         int err = 0;
5150
5151         /* There are currently three cases handled here:
5152          * 1. Joining a bridge
5153          * 2. Leaving a previously joined bridge
5154          * 3. Other, e.g. being added to or removed from a bond or openvswitch,
5155          *    in which case nothing is done
5156          */
5157         if (master && master->rtnl_link_ops &&
5158             !strcmp(master->rtnl_link_ops->kind, "bridge"))
5159                 err = rocker_port_bridge_join(rocker_port, master);
5160         else if (rocker_port_is_bridged(rocker_port))
5161                 err = rocker_port_bridge_leave(rocker_port);
5162
5163         return err;
5164 }
5165
5166 static int rocker_netdevice_event(struct notifier_block *unused,
5167                                   unsigned long event, void *ptr)
5168 {
5169         struct net_device *dev;
5170         int err;
5171
5172         switch (event) {
5173         case NETDEV_CHANGEUPPER:
5174                 dev = netdev_notifier_info_to_dev(ptr);
5175                 if (!rocker_port_dev_check(dev))
5176                         return NOTIFY_DONE;
5177                 err = rocker_port_master_changed(dev);
5178                 if (err)
5179                         netdev_warn(dev,
5180                                     "failed to reflect master change (err %d)\n",
5181                                     err);
5182                 break;
5183         }
5184
5185         return NOTIFY_DONE;
5186 }
5187
5188 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5189         .notifier_call = rocker_netdevice_event,
5190 };
5191
5192 /************************************
5193  * Net event notifier event handler
5194  ************************************/
5195
5196 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5197 {
5198         struct rocker_port *rocker_port = netdev_priv(dev);
5199         int flags = (n->nud_state & NUD_VALID) ? 0 : ROCKER_OP_FLAG_REMOVE;
5200         __be32 ip_addr = *(__be32 *)n->primary_key;
5201
5202         return rocker_port_ipv4_neigh(rocker_port, SWITCHDEV_TRANS_NONE,
5203                                       flags, ip_addr, n->ha);
5204 }
5205
5206 static int rocker_netevent_event(struct notifier_block *unused,
5207                                  unsigned long event, void *ptr)
5208 {
5209         struct net_device *dev;
5210         struct neighbour *n = ptr;
5211         int err;
5212
5213         switch (event) {
5214         case NETEVENT_NEIGH_UPDATE:
5215                 if (n->tbl != &arp_tbl)
5216                         return NOTIFY_DONE;
5217                 dev = n->dev;
5218                 if (!rocker_port_dev_check(dev))
5219                         return NOTIFY_DONE;
5220                 err = rocker_neigh_update(dev, n);
5221                 if (err)
5222                         netdev_warn(dev,
5223                                     "failed to handle neigh update (err %d)\n",
5224                                     err);
5225                 break;
5226         }
5227
5228         return NOTIFY_DONE;
5229 }
5230
5231 static struct notifier_block rocker_netevent_nb __read_mostly = {
5232         .notifier_call = rocker_netevent_event,
5233 };
5234
5235 /***********************
5236  * Module init and exit
5237  ***********************/
5238
5239 static int __init rocker_module_init(void)
5240 {
5241         int err;
5242
5243         register_netdevice_notifier(&rocker_netdevice_nb);
5244         register_netevent_notifier(&rocker_netevent_nb);
5245         err = pci_register_driver(&rocker_pci_driver);
5246         if (err)
5247                 goto err_pci_register_driver;
5248         return 0;
5249
5250 err_pci_register_driver:
5251         unregister_netdevice_notifier(&rocker_netevent_nb);
5252         unregister_netdevice_notifier(&rocker_netdevice_nb);
5253         return err;
5254 }
5255
5256 static void __exit rocker_module_exit(void)
5257 {
5258         unregister_netevent_notifier(&rocker_netevent_nb);
5259         unregister_netdevice_notifier(&rocker_netdevice_nb);
5260         pci_unregister_driver(&rocker_pci_driver);
5261 }
5262
5263 module_init(rocker_module_init);
5264 module_exit(rocker_module_exit);
5265
5266 MODULE_LICENSE("GPL v2");
5267 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5268 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5269 MODULE_DESCRIPTION("Rocker switch device driver");
5270 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);