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[karo-tx-linux.git] / 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 <net/switchdev.h>
34 #include <net/rtnetlink.h>
35 #include <net/ip_fib.h>
36 #include <net/netevent.h>
37 #include <net/arp.h>
38 #include <asm-generic/io-64-nonatomic-lo-hi.h>
39 #include <generated/utsrelease.h>
40
41 #include "rocker.h"
42
43 static const char rocker_driver_name[] = "rocker";
44
45 static const struct pci_device_id rocker_pci_id_table[] = {
46         {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
47         {0, }
48 };
49
50 struct rocker_flow_tbl_key {
51         u32 priority;
52         enum rocker_of_dpa_table_id tbl_id;
53         union {
54                 struct {
55                         u32 in_pport;
56                         u32 in_pport_mask;
57                         enum rocker_of_dpa_table_id goto_tbl;
58                 } ig_port;
59                 struct {
60                         u32 in_pport;
61                         __be16 vlan_id;
62                         __be16 vlan_id_mask;
63                         enum rocker_of_dpa_table_id goto_tbl;
64                         bool untagged;
65                         __be16 new_vlan_id;
66                 } vlan;
67                 struct {
68                         u32 in_pport;
69                         u32 in_pport_mask;
70                         __be16 eth_type;
71                         u8 eth_dst[ETH_ALEN];
72                         u8 eth_dst_mask[ETH_ALEN];
73                         __be16 vlan_id;
74                         __be16 vlan_id_mask;
75                         enum rocker_of_dpa_table_id goto_tbl;
76                         bool copy_to_cpu;
77                 } term_mac;
78                 struct {
79                         __be16 eth_type;
80                         __be32 dst4;
81                         __be32 dst4_mask;
82                         enum rocker_of_dpa_table_id goto_tbl;
83                         u32 group_id;
84                 } ucast_routing;
85                 struct {
86                         u8 eth_dst[ETH_ALEN];
87                         u8 eth_dst_mask[ETH_ALEN];
88                         int has_eth_dst;
89                         int has_eth_dst_mask;
90                         __be16 vlan_id;
91                         u32 tunnel_id;
92                         enum rocker_of_dpa_table_id goto_tbl;
93                         u32 group_id;
94                         bool copy_to_cpu;
95                 } bridge;
96                 struct {
97                         u32 in_pport;
98                         u32 in_pport_mask;
99                         u8 eth_src[ETH_ALEN];
100                         u8 eth_src_mask[ETH_ALEN];
101                         u8 eth_dst[ETH_ALEN];
102                         u8 eth_dst_mask[ETH_ALEN];
103                         __be16 eth_type;
104                         __be16 vlan_id;
105                         __be16 vlan_id_mask;
106                         u8 ip_proto;
107                         u8 ip_proto_mask;
108                         u8 ip_tos;
109                         u8 ip_tos_mask;
110                         u32 group_id;
111                 } acl;
112         };
113 };
114
115 struct rocker_flow_tbl_entry {
116         struct hlist_node entry;
117         u32 cmd;
118         u64 cookie;
119         struct rocker_flow_tbl_key key;
120         size_t key_len;
121         u32 key_crc32; /* key */
122 };
123
124 struct rocker_group_tbl_entry {
125         struct hlist_node entry;
126         u32 cmd;
127         u32 group_id; /* key */
128         u16 group_count;
129         u32 *group_ids;
130         union {
131                 struct {
132                         u8 pop_vlan;
133                 } l2_interface;
134                 struct {
135                         u8 eth_src[ETH_ALEN];
136                         u8 eth_dst[ETH_ALEN];
137                         __be16 vlan_id;
138                         u32 group_id;
139                 } l2_rewrite;
140                 struct {
141                         u8 eth_src[ETH_ALEN];
142                         u8 eth_dst[ETH_ALEN];
143                         __be16 vlan_id;
144                         bool ttl_check;
145                         u32 group_id;
146                 } l3_unicast;
147         };
148 };
149
150 struct rocker_fdb_tbl_entry {
151         struct hlist_node entry;
152         u32 key_crc32; /* key */
153         bool learned;
154         struct rocker_fdb_tbl_key {
155                 u32 pport;
156                 u8 addr[ETH_ALEN];
157                 __be16 vlan_id;
158         } key;
159 };
160
161 struct rocker_internal_vlan_tbl_entry {
162         struct hlist_node entry;
163         int ifindex; /* key */
164         u32 ref_count;
165         __be16 vlan_id;
166 };
167
168 struct rocker_neigh_tbl_entry {
169         struct hlist_node entry;
170         __be32 ip_addr; /* key */
171         struct net_device *dev;
172         u32 ref_count;
173         u32 index;
174         u8 eth_dst[ETH_ALEN];
175         bool ttl_check;
176 };
177
178 struct rocker_desc_info {
179         char *data; /* mapped */
180         size_t data_size;
181         size_t tlv_size;
182         struct rocker_desc *desc;
183         DEFINE_DMA_UNMAP_ADDR(mapaddr);
184 };
185
186 struct rocker_dma_ring_info {
187         size_t size;
188         u32 head;
189         u32 tail;
190         struct rocker_desc *desc; /* mapped */
191         dma_addr_t mapaddr;
192         struct rocker_desc_info *desc_info;
193         unsigned int type;
194 };
195
196 struct rocker;
197
198 enum {
199         ROCKER_CTRL_LINK_LOCAL_MCAST,
200         ROCKER_CTRL_LOCAL_ARP,
201         ROCKER_CTRL_IPV4_MCAST,
202         ROCKER_CTRL_IPV6_MCAST,
203         ROCKER_CTRL_DFLT_BRIDGING,
204         ROCKER_CTRL_MAX,
205 };
206
207 #define ROCKER_INTERNAL_VLAN_ID_BASE    0x0f00
208 #define ROCKER_N_INTERNAL_VLANS         255
209 #define ROCKER_VLAN_BITMAP_LEN          BITS_TO_LONGS(VLAN_N_VID)
210 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
211
212 struct rocker_port {
213         struct net_device *dev;
214         struct net_device *bridge_dev;
215         struct rocker *rocker;
216         unsigned int port_number;
217         u32 pport;
218         __be16 internal_vlan_id;
219         int stp_state;
220         u32 brport_flags;
221         bool ctrls[ROCKER_CTRL_MAX];
222         unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
223         struct napi_struct napi_tx;
224         struct napi_struct napi_rx;
225         struct rocker_dma_ring_info tx_ring;
226         struct rocker_dma_ring_info rx_ring;
227 };
228
229 struct rocker {
230         struct pci_dev *pdev;
231         u8 __iomem *hw_addr;
232         struct msix_entry *msix_entries;
233         unsigned int port_count;
234         struct rocker_port **ports;
235         struct {
236                 u64 id;
237         } hw;
238         spinlock_t cmd_ring_lock;
239         struct rocker_dma_ring_info cmd_ring;
240         struct rocker_dma_ring_info event_ring;
241         DECLARE_HASHTABLE(flow_tbl, 16);
242         spinlock_t flow_tbl_lock;
243         u64 flow_tbl_next_cookie;
244         DECLARE_HASHTABLE(group_tbl, 16);
245         spinlock_t group_tbl_lock;
246         DECLARE_HASHTABLE(fdb_tbl, 16);
247         spinlock_t fdb_tbl_lock;
248         unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
249         DECLARE_HASHTABLE(internal_vlan_tbl, 8);
250         spinlock_t internal_vlan_tbl_lock;
251         DECLARE_HASHTABLE(neigh_tbl, 16);
252         spinlock_t neigh_tbl_lock;
253         u32 neigh_tbl_next_index;
254 };
255
256 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
257 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
258 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
259 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
260 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
261 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
262 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
263 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
264 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
265
266 /* Rocker priority levels for flow table entries.  Higher
267  * priority match takes precedence over lower priority match.
268  */
269
270 enum {
271         ROCKER_PRIORITY_UNKNOWN = 0,
272         ROCKER_PRIORITY_IG_PORT = 1,
273         ROCKER_PRIORITY_VLAN = 1,
274         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
275         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
276         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
277         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
278         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
279         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
280         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
281         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
282         ROCKER_PRIORITY_ACL_CTRL = 3,
283         ROCKER_PRIORITY_ACL_NORMAL = 2,
284         ROCKER_PRIORITY_ACL_DFLT = 1,
285 };
286
287 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
288 {
289         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
290         u16 end = 0xffe;
291         u16 _vlan_id = ntohs(vlan_id);
292
293         return (_vlan_id >= start && _vlan_id <= end);
294 }
295
296 static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port,
297                                       u16 vid, bool *pop_vlan)
298 {
299         __be16 vlan_id;
300
301         if (pop_vlan)
302                 *pop_vlan = false;
303         vlan_id = htons(vid);
304         if (!vlan_id) {
305                 vlan_id = rocker_port->internal_vlan_id;
306                 if (pop_vlan)
307                         *pop_vlan = true;
308         }
309
310         return vlan_id;
311 }
312
313 static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port,
314                                    __be16 vlan_id)
315 {
316         if (rocker_vlan_id_is_internal(vlan_id))
317                 return 0;
318
319         return ntohs(vlan_id);
320 }
321
322 static bool rocker_port_is_bridged(struct rocker_port *rocker_port)
323 {
324         return !!rocker_port->bridge_dev;
325 }
326
327 struct rocker_wait {
328         wait_queue_head_t wait;
329         bool done;
330         bool nowait;
331 };
332
333 static void rocker_wait_reset(struct rocker_wait *wait)
334 {
335         wait->done = false;
336         wait->nowait = false;
337 }
338
339 static void rocker_wait_init(struct rocker_wait *wait)
340 {
341         init_waitqueue_head(&wait->wait);
342         rocker_wait_reset(wait);
343 }
344
345 static struct rocker_wait *rocker_wait_create(gfp_t gfp)
346 {
347         struct rocker_wait *wait;
348
349         wait = kmalloc(sizeof(*wait), gfp);
350         if (!wait)
351                 return NULL;
352         rocker_wait_init(wait);
353         return wait;
354 }
355
356 static void rocker_wait_destroy(struct rocker_wait *work)
357 {
358         kfree(work);
359 }
360
361 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
362                                       unsigned long timeout)
363 {
364         wait_event_timeout(wait->wait, wait->done, HZ / 10);
365         if (!wait->done)
366                 return false;
367         return true;
368 }
369
370 static void rocker_wait_wake_up(struct rocker_wait *wait)
371 {
372         wait->done = true;
373         wake_up(&wait->wait);
374 }
375
376 static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector)
377 {
378         return rocker->msix_entries[vector].vector;
379 }
380
381 static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port)
382 {
383         return rocker_msix_vector(rocker_port->rocker,
384                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
385 }
386
387 static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port)
388 {
389         return rocker_msix_vector(rocker_port->rocker,
390                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
391 }
392
393 #define rocker_write32(rocker, reg, val)        \
394         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
395 #define rocker_read32(rocker, reg)      \
396         readl((rocker)->hw_addr + (ROCKER_ ## reg))
397 #define rocker_write64(rocker, reg, val)        \
398         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
399 #define rocker_read64(rocker, reg)      \
400         readq((rocker)->hw_addr + (ROCKER_ ## reg))
401
402 /*****************************
403  * HW basic testing functions
404  *****************************/
405
406 static int rocker_reg_test(struct rocker *rocker)
407 {
408         struct pci_dev *pdev = rocker->pdev;
409         u64 test_reg;
410         u64 rnd;
411
412         rnd = prandom_u32();
413         rnd >>= 1;
414         rocker_write32(rocker, TEST_REG, rnd);
415         test_reg = rocker_read32(rocker, TEST_REG);
416         if (test_reg != rnd * 2) {
417                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
418                         test_reg, rnd * 2);
419                 return -EIO;
420         }
421
422         rnd = prandom_u32();
423         rnd <<= 31;
424         rnd |= prandom_u32();
425         rocker_write64(rocker, TEST_REG64, rnd);
426         test_reg = rocker_read64(rocker, TEST_REG64);
427         if (test_reg != rnd * 2) {
428                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
429                         test_reg, rnd * 2);
430                 return -EIO;
431         }
432
433         return 0;
434 }
435
436 static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait,
437                                u32 test_type, dma_addr_t dma_handle,
438                                unsigned char *buf, unsigned char *expect,
439                                size_t size)
440 {
441         struct pci_dev *pdev = rocker->pdev;
442         int i;
443
444         rocker_wait_reset(wait);
445         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
446
447         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
448                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
449                 return -EIO;
450         }
451
452         for (i = 0; i < size; i++) {
453                 if (buf[i] != expect[i]) {
454                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
455                                 buf[i], i, expect[i]);
456                         return -EIO;
457                 }
458         }
459         return 0;
460 }
461
462 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
463 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
464
465 static int rocker_dma_test_offset(struct rocker *rocker,
466                                   struct rocker_wait *wait, int offset)
467 {
468         struct pci_dev *pdev = rocker->pdev;
469         unsigned char *alloc;
470         unsigned char *buf;
471         unsigned char *expect;
472         dma_addr_t dma_handle;
473         int i;
474         int err;
475
476         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
477                         GFP_KERNEL | GFP_DMA);
478         if (!alloc)
479                 return -ENOMEM;
480         buf = alloc + offset;
481         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
482
483         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
484                                     PCI_DMA_BIDIRECTIONAL);
485         if (pci_dma_mapping_error(pdev, dma_handle)) {
486                 err = -EIO;
487                 goto free_alloc;
488         }
489
490         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
491         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
492
493         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
494         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
495                                   dma_handle, buf, expect,
496                                   ROCKER_TEST_DMA_BUF_SIZE);
497         if (err)
498                 goto unmap;
499
500         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
501         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
502                                   dma_handle, buf, expect,
503                                   ROCKER_TEST_DMA_BUF_SIZE);
504         if (err)
505                 goto unmap;
506
507         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
508         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
509                 expect[i] = ~buf[i];
510         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
511                                   dma_handle, buf, expect,
512                                   ROCKER_TEST_DMA_BUF_SIZE);
513         if (err)
514                 goto unmap;
515
516 unmap:
517         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
518                          PCI_DMA_BIDIRECTIONAL);
519 free_alloc:
520         kfree(alloc);
521
522         return err;
523 }
524
525 static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait)
526 {
527         int i;
528         int err;
529
530         for (i = 0; i < 8; i++) {
531                 err = rocker_dma_test_offset(rocker, wait, i);
532                 if (err)
533                         return err;
534         }
535         return 0;
536 }
537
538 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
539 {
540         struct rocker_wait *wait = dev_id;
541
542         rocker_wait_wake_up(wait);
543
544         return IRQ_HANDLED;
545 }
546
547 static int rocker_basic_hw_test(struct rocker *rocker)
548 {
549         struct pci_dev *pdev = rocker->pdev;
550         struct rocker_wait wait;
551         int err;
552
553         err = rocker_reg_test(rocker);
554         if (err) {
555                 dev_err(&pdev->dev, "reg test failed\n");
556                 return err;
557         }
558
559         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
560                           rocker_test_irq_handler, 0,
561                           rocker_driver_name, &wait);
562         if (err) {
563                 dev_err(&pdev->dev, "cannot assign test irq\n");
564                 return err;
565         }
566
567         rocker_wait_init(&wait);
568         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
569
570         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
571                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
572                 err = -EIO;
573                 goto free_irq;
574         }
575
576         err = rocker_dma_test(rocker, &wait);
577         if (err)
578                 dev_err(&pdev->dev, "dma test failed\n");
579
580 free_irq:
581         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
582         return err;
583 }
584
585 /******
586  * TLV
587  ******/
588
589 #define ROCKER_TLV_ALIGNTO 8U
590 #define ROCKER_TLV_ALIGN(len) \
591         (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
592 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
593
594 /*  <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
595  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
596  * |             Header          | Pad |           Payload           | Pad |
597  * |      (struct rocker_tlv)    | ing |                             | ing |
598  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
599  *  <--------------------------- tlv->len -------------------------->
600  */
601
602 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
603                                           int *remaining)
604 {
605         int totlen = ROCKER_TLV_ALIGN(tlv->len);
606
607         *remaining -= totlen;
608         return (struct rocker_tlv *) ((char *) tlv + totlen);
609 }
610
611 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
612 {
613         return remaining >= (int) ROCKER_TLV_HDRLEN &&
614                tlv->len >= ROCKER_TLV_HDRLEN &&
615                tlv->len <= remaining;
616 }
617
618 #define rocker_tlv_for_each(pos, head, len, rem)        \
619         for (pos = head, rem = len;                     \
620              rocker_tlv_ok(pos, rem);                   \
621              pos = rocker_tlv_next(pos, &(rem)))
622
623 #define rocker_tlv_for_each_nested(pos, tlv, rem)       \
624         rocker_tlv_for_each(pos, rocker_tlv_data(tlv),  \
625                             rocker_tlv_len(tlv), rem)
626
627 static int rocker_tlv_attr_size(int payload)
628 {
629         return ROCKER_TLV_HDRLEN + payload;
630 }
631
632 static int rocker_tlv_total_size(int payload)
633 {
634         return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
635 }
636
637 static int rocker_tlv_padlen(int payload)
638 {
639         return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
640 }
641
642 static int rocker_tlv_type(const struct rocker_tlv *tlv)
643 {
644         return tlv->type;
645 }
646
647 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
648 {
649         return (char *) tlv + ROCKER_TLV_HDRLEN;
650 }
651
652 static int rocker_tlv_len(const struct rocker_tlv *tlv)
653 {
654         return tlv->len - ROCKER_TLV_HDRLEN;
655 }
656
657 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
658 {
659         return *(u8 *) rocker_tlv_data(tlv);
660 }
661
662 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
663 {
664         return *(u16 *) rocker_tlv_data(tlv);
665 }
666
667 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
668 {
669         return *(__be16 *) rocker_tlv_data(tlv);
670 }
671
672 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
673 {
674         return *(u32 *) rocker_tlv_data(tlv);
675 }
676
677 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
678 {
679         return *(u64 *) rocker_tlv_data(tlv);
680 }
681
682 static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
683                              const char *buf, int buf_len)
684 {
685         const struct rocker_tlv *tlv;
686         const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
687         int rem;
688
689         memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
690
691         rocker_tlv_for_each(tlv, head, buf_len, rem) {
692                 u32 type = rocker_tlv_type(tlv);
693
694                 if (type > 0 && type <= maxtype)
695                         tb[type] = (struct rocker_tlv *) tlv;
696         }
697 }
698
699 static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
700                                     const struct rocker_tlv *tlv)
701 {
702         rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
703                          rocker_tlv_len(tlv));
704 }
705
706 static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
707                                   struct rocker_desc_info *desc_info)
708 {
709         rocker_tlv_parse(tb, maxtype, desc_info->data,
710                          desc_info->desc->tlv_size);
711 }
712
713 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
714 {
715         return (struct rocker_tlv *) ((char *) desc_info->data +
716                                                desc_info->tlv_size);
717 }
718
719 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
720                           int attrtype, int attrlen, const void *data)
721 {
722         int tail_room = desc_info->data_size - desc_info->tlv_size;
723         int total_size = rocker_tlv_total_size(attrlen);
724         struct rocker_tlv *tlv;
725
726         if (unlikely(tail_room < total_size))
727                 return -EMSGSIZE;
728
729         tlv = rocker_tlv_start(desc_info);
730         desc_info->tlv_size += total_size;
731         tlv->type = attrtype;
732         tlv->len = rocker_tlv_attr_size(attrlen);
733         memcpy(rocker_tlv_data(tlv), data, attrlen);
734         memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
735         return 0;
736 }
737
738 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
739                              int attrtype, u8 value)
740 {
741         return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
742 }
743
744 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
745                               int attrtype, u16 value)
746 {
747         return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
748 }
749
750 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
751                                int attrtype, __be16 value)
752 {
753         return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
754 }
755
756 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
757                               int attrtype, u32 value)
758 {
759         return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
760 }
761
762 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
763                                int attrtype, __be32 value)
764 {
765         return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
766 }
767
768 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
769                               int attrtype, u64 value)
770 {
771         return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
772 }
773
774 static struct rocker_tlv *
775 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
776 {
777         struct rocker_tlv *start = rocker_tlv_start(desc_info);
778
779         if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
780                 return NULL;
781
782         return start;
783 }
784
785 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
786                                 struct rocker_tlv *start)
787 {
788         start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
789 }
790
791 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
792                                    struct rocker_tlv *start)
793 {
794         desc_info->tlv_size = (char *) start - desc_info->data;
795 }
796
797 /******************************************
798  * DMA rings and descriptors manipulations
799  ******************************************/
800
801 static u32 __pos_inc(u32 pos, size_t limit)
802 {
803         return ++pos == limit ? 0 : pos;
804 }
805
806 static int rocker_desc_err(struct rocker_desc_info *desc_info)
807 {
808         int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
809
810         switch (err) {
811         case ROCKER_OK:
812                 return 0;
813         case -ROCKER_ENOENT:
814                 return -ENOENT;
815         case -ROCKER_ENXIO:
816                 return -ENXIO;
817         case -ROCKER_ENOMEM:
818                 return -ENOMEM;
819         case -ROCKER_EEXIST:
820                 return -EEXIST;
821         case -ROCKER_EINVAL:
822                 return -EINVAL;
823         case -ROCKER_EMSGSIZE:
824                 return -EMSGSIZE;
825         case -ROCKER_ENOTSUP:
826                 return -EOPNOTSUPP;
827         case -ROCKER_ENOBUFS:
828                 return -ENOBUFS;
829         }
830
831         return -EINVAL;
832 }
833
834 static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
835 {
836         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
837 }
838
839 static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
840 {
841         u32 comp_err = desc_info->desc->comp_err;
842
843         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
844 }
845
846 static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
847 {
848         return (void *)(uintptr_t)desc_info->desc->cookie;
849 }
850
851 static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
852                                        void *ptr)
853 {
854         desc_info->desc->cookie = (uintptr_t) ptr;
855 }
856
857 static struct rocker_desc_info *
858 rocker_desc_head_get(struct rocker_dma_ring_info *info)
859 {
860         static struct rocker_desc_info *desc_info;
861         u32 head = __pos_inc(info->head, info->size);
862
863         desc_info = &info->desc_info[info->head];
864         if (head == info->tail)
865                 return NULL; /* ring full */
866         desc_info->tlv_size = 0;
867         return desc_info;
868 }
869
870 static void rocker_desc_commit(struct rocker_desc_info *desc_info)
871 {
872         desc_info->desc->buf_size = desc_info->data_size;
873         desc_info->desc->tlv_size = desc_info->tlv_size;
874 }
875
876 static void rocker_desc_head_set(struct rocker *rocker,
877                                  struct rocker_dma_ring_info *info,
878                                  struct rocker_desc_info *desc_info)
879 {
880         u32 head = __pos_inc(info->head, info->size);
881
882         BUG_ON(head == info->tail);
883         rocker_desc_commit(desc_info);
884         info->head = head;
885         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
886 }
887
888 static struct rocker_desc_info *
889 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
890 {
891         static struct rocker_desc_info *desc_info;
892
893         if (info->tail == info->head)
894                 return NULL; /* nothing to be done between head and tail */
895         desc_info = &info->desc_info[info->tail];
896         if (!rocker_desc_gen(desc_info))
897                 return NULL; /* gen bit not set, desc is not ready yet */
898         info->tail = __pos_inc(info->tail, info->size);
899         desc_info->tlv_size = desc_info->desc->tlv_size;
900         return desc_info;
901 }
902
903 static void rocker_dma_ring_credits_set(struct rocker *rocker,
904                                         struct rocker_dma_ring_info *info,
905                                         u32 credits)
906 {
907         if (credits)
908                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
909 }
910
911 static unsigned long rocker_dma_ring_size_fix(size_t size)
912 {
913         return max(ROCKER_DMA_SIZE_MIN,
914                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
915 }
916
917 static int rocker_dma_ring_create(struct rocker *rocker,
918                                   unsigned int type,
919                                   size_t size,
920                                   struct rocker_dma_ring_info *info)
921 {
922         int i;
923
924         BUG_ON(size != rocker_dma_ring_size_fix(size));
925         info->size = size;
926         info->type = type;
927         info->head = 0;
928         info->tail = 0;
929         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
930                                   GFP_KERNEL);
931         if (!info->desc_info)
932                 return -ENOMEM;
933
934         info->desc = pci_alloc_consistent(rocker->pdev,
935                                           info->size * sizeof(*info->desc),
936                                           &info->mapaddr);
937         if (!info->desc) {
938                 kfree(info->desc_info);
939                 return -ENOMEM;
940         }
941
942         for (i = 0; i < info->size; i++)
943                 info->desc_info[i].desc = &info->desc[i];
944
945         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
946                        ROCKER_DMA_DESC_CTRL_RESET);
947         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
948         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
949
950         return 0;
951 }
952
953 static void rocker_dma_ring_destroy(struct rocker *rocker,
954                                     struct rocker_dma_ring_info *info)
955 {
956         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
957
958         pci_free_consistent(rocker->pdev,
959                             info->size * sizeof(struct rocker_desc),
960                             info->desc, info->mapaddr);
961         kfree(info->desc_info);
962 }
963
964 static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
965                                              struct rocker_dma_ring_info *info)
966 {
967         int i;
968
969         BUG_ON(info->head || info->tail);
970
971         /* When ring is consumer, we need to advance head for each desc.
972          * That tells hw that the desc is ready to be used by it.
973          */
974         for (i = 0; i < info->size - 1; i++)
975                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
976         rocker_desc_commit(&info->desc_info[i]);
977 }
978
979 static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
980                                       struct rocker_dma_ring_info *info,
981                                       int direction, size_t buf_size)
982 {
983         struct pci_dev *pdev = rocker->pdev;
984         int i;
985         int err;
986
987         for (i = 0; i < info->size; i++) {
988                 struct rocker_desc_info *desc_info = &info->desc_info[i];
989                 struct rocker_desc *desc = &info->desc[i];
990                 dma_addr_t dma_handle;
991                 char *buf;
992
993                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
994                 if (!buf) {
995                         err = -ENOMEM;
996                         goto rollback;
997                 }
998
999                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1000                 if (pci_dma_mapping_error(pdev, dma_handle)) {
1001                         kfree(buf);
1002                         err = -EIO;
1003                         goto rollback;
1004                 }
1005
1006                 desc_info->data = buf;
1007                 desc_info->data_size = buf_size;
1008                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1009
1010                 desc->buf_addr = dma_handle;
1011                 desc->buf_size = buf_size;
1012         }
1013         return 0;
1014
1015 rollback:
1016         for (i--; i >= 0; i--) {
1017                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1018
1019                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1020                                  desc_info->data_size, direction);
1021                 kfree(desc_info->data);
1022         }
1023         return err;
1024 }
1025
1026 static void rocker_dma_ring_bufs_free(struct rocker *rocker,
1027                                       struct rocker_dma_ring_info *info,
1028                                       int direction)
1029 {
1030         struct pci_dev *pdev = rocker->pdev;
1031         int i;
1032
1033         for (i = 0; i < info->size; i++) {
1034                 struct rocker_desc_info *desc_info = &info->desc_info[i];
1035                 struct rocker_desc *desc = &info->desc[i];
1036
1037                 desc->buf_addr = 0;
1038                 desc->buf_size = 0;
1039                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1040                                  desc_info->data_size, direction);
1041                 kfree(desc_info->data);
1042         }
1043 }
1044
1045 static int rocker_dma_rings_init(struct rocker *rocker)
1046 {
1047         struct pci_dev *pdev = rocker->pdev;
1048         int err;
1049
1050         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1051                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
1052                                      &rocker->cmd_ring);
1053         if (err) {
1054                 dev_err(&pdev->dev, "failed to create command dma ring\n");
1055                 return err;
1056         }
1057
1058         spin_lock_init(&rocker->cmd_ring_lock);
1059
1060         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1061                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1062         if (err) {
1063                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1064                 goto err_dma_cmd_ring_bufs_alloc;
1065         }
1066
1067         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1068                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
1069                                      &rocker->event_ring);
1070         if (err) {
1071                 dev_err(&pdev->dev, "failed to create event dma ring\n");
1072                 goto err_dma_event_ring_create;
1073         }
1074
1075         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1076                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
1077         if (err) {
1078                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1079                 goto err_dma_event_ring_bufs_alloc;
1080         }
1081         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1082         return 0;
1083
1084 err_dma_event_ring_bufs_alloc:
1085         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1086 err_dma_event_ring_create:
1087         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1088                                   PCI_DMA_BIDIRECTIONAL);
1089 err_dma_cmd_ring_bufs_alloc:
1090         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1091         return err;
1092 }
1093
1094 static void rocker_dma_rings_fini(struct rocker *rocker)
1095 {
1096         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1097                                   PCI_DMA_BIDIRECTIONAL);
1098         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1099         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1100                                   PCI_DMA_BIDIRECTIONAL);
1101         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1102 }
1103
1104 static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1105                                       struct rocker_port *rocker_port,
1106                                       struct rocker_desc_info *desc_info,
1107                                       struct sk_buff *skb, size_t buf_len)
1108 {
1109         struct pci_dev *pdev = rocker->pdev;
1110         dma_addr_t dma_handle;
1111
1112         dma_handle = pci_map_single(pdev, skb->data, buf_len,
1113                                     PCI_DMA_FROMDEVICE);
1114         if (pci_dma_mapping_error(pdev, dma_handle))
1115                 return -EIO;
1116         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1117                 goto tlv_put_failure;
1118         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1119                 goto tlv_put_failure;
1120         return 0;
1121
1122 tlv_put_failure:
1123         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1124         desc_info->tlv_size = 0;
1125         return -EMSGSIZE;
1126 }
1127
1128 static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1129 {
1130         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1131 }
1132
1133 static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1134                                         struct rocker_port *rocker_port,
1135                                         struct rocker_desc_info *desc_info)
1136 {
1137         struct net_device *dev = rocker_port->dev;
1138         struct sk_buff *skb;
1139         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1140         int err;
1141
1142         /* Ensure that hw will see tlv_size zero in case of an error.
1143          * That tells hw to use another descriptor.
1144          */
1145         rocker_desc_cookie_ptr_set(desc_info, NULL);
1146         desc_info->tlv_size = 0;
1147
1148         skb = netdev_alloc_skb_ip_align(dev, buf_len);
1149         if (!skb)
1150                 return -ENOMEM;
1151         err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1152                                          skb, buf_len);
1153         if (err) {
1154                 dev_kfree_skb_any(skb);
1155                 return err;
1156         }
1157         rocker_desc_cookie_ptr_set(desc_info, skb);
1158         return 0;
1159 }
1160
1161 static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1162                                          struct rocker_tlv **attrs)
1163 {
1164         struct pci_dev *pdev = rocker->pdev;
1165         dma_addr_t dma_handle;
1166         size_t len;
1167
1168         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1169             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1170                 return;
1171         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1172         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1173         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1174 }
1175
1176 static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1177                                         struct rocker_desc_info *desc_info)
1178 {
1179         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1180         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1181
1182         if (!skb)
1183                 return;
1184         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1185         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1186         dev_kfree_skb_any(skb);
1187 }
1188
1189 static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1190                                          struct rocker_port *rocker_port)
1191 {
1192         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1193         int i;
1194         int err;
1195
1196         for (i = 0; i < rx_ring->size; i++) {
1197                 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1198                                                    &rx_ring->desc_info[i]);
1199                 if (err)
1200                         goto rollback;
1201         }
1202         return 0;
1203
1204 rollback:
1205         for (i--; i >= 0; i--)
1206                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1207         return err;
1208 }
1209
1210 static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1211                                          struct rocker_port *rocker_port)
1212 {
1213         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1214         int i;
1215
1216         for (i = 0; i < rx_ring->size; i++)
1217                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1218 }
1219
1220 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1221 {
1222         struct rocker *rocker = rocker_port->rocker;
1223         int err;
1224
1225         err = rocker_dma_ring_create(rocker,
1226                                      ROCKER_DMA_TX(rocker_port->port_number),
1227                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1228                                      &rocker_port->tx_ring);
1229         if (err) {
1230                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1231                 return err;
1232         }
1233
1234         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1235                                          PCI_DMA_TODEVICE,
1236                                          ROCKER_DMA_TX_DESC_SIZE);
1237         if (err) {
1238                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1239                 goto err_dma_tx_ring_bufs_alloc;
1240         }
1241
1242         err = rocker_dma_ring_create(rocker,
1243                                      ROCKER_DMA_RX(rocker_port->port_number),
1244                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1245                                      &rocker_port->rx_ring);
1246         if (err) {
1247                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1248                 goto err_dma_rx_ring_create;
1249         }
1250
1251         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1252                                          PCI_DMA_BIDIRECTIONAL,
1253                                          ROCKER_DMA_RX_DESC_SIZE);
1254         if (err) {
1255                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1256                 goto err_dma_rx_ring_bufs_alloc;
1257         }
1258
1259         err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1260         if (err) {
1261                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1262                 goto err_dma_rx_ring_skbs_alloc;
1263         }
1264         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1265
1266         return 0;
1267
1268 err_dma_rx_ring_skbs_alloc:
1269         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1270                                   PCI_DMA_BIDIRECTIONAL);
1271 err_dma_rx_ring_bufs_alloc:
1272         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1273 err_dma_rx_ring_create:
1274         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1275                                   PCI_DMA_TODEVICE);
1276 err_dma_tx_ring_bufs_alloc:
1277         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1278         return err;
1279 }
1280
1281 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1282 {
1283         struct rocker *rocker = rocker_port->rocker;
1284
1285         rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1286         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1287                                   PCI_DMA_BIDIRECTIONAL);
1288         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1289         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1290                                   PCI_DMA_TODEVICE);
1291         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1292 }
1293
1294 static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1295 {
1296         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1297
1298         if (enable)
1299                 val |= 1ULL << rocker_port->pport;
1300         else
1301                 val &= ~(1ULL << rocker_port->pport);
1302         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1303 }
1304
1305 /********************************
1306  * Interrupt handler and helpers
1307  ********************************/
1308
1309 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1310 {
1311         struct rocker *rocker = dev_id;
1312         struct rocker_desc_info *desc_info;
1313         struct rocker_wait *wait;
1314         u32 credits = 0;
1315
1316         spin_lock(&rocker->cmd_ring_lock);
1317         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1318                 wait = rocker_desc_cookie_ptr_get(desc_info);
1319                 if (wait->nowait) {
1320                         rocker_desc_gen_clear(desc_info);
1321                         rocker_wait_destroy(wait);
1322                 } else {
1323                         rocker_wait_wake_up(wait);
1324                 }
1325                 credits++;
1326         }
1327         spin_unlock(&rocker->cmd_ring_lock);
1328         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1329
1330         return IRQ_HANDLED;
1331 }
1332
1333 static void rocker_port_link_up(struct rocker_port *rocker_port)
1334 {
1335         netif_carrier_on(rocker_port->dev);
1336         netdev_info(rocker_port->dev, "Link is up\n");
1337 }
1338
1339 static void rocker_port_link_down(struct rocker_port *rocker_port)
1340 {
1341         netif_carrier_off(rocker_port->dev);
1342         netdev_info(rocker_port->dev, "Link is down\n");
1343 }
1344
1345 static int rocker_event_link_change(struct rocker *rocker,
1346                                     const struct rocker_tlv *info)
1347 {
1348         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1349         unsigned int port_number;
1350         bool link_up;
1351         struct rocker_port *rocker_port;
1352
1353         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1354         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1355             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1356                 return -EIO;
1357         port_number =
1358                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1359         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1360
1361         if (port_number >= rocker->port_count)
1362                 return -EINVAL;
1363
1364         rocker_port = rocker->ports[port_number];
1365         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1366                 if (link_up)
1367                         rocker_port_link_up(rocker_port);
1368                 else
1369                         rocker_port_link_down(rocker_port);
1370         }
1371
1372         return 0;
1373 }
1374
1375 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
1376 #define ROCKER_OP_FLAG_NOWAIT           BIT(1)
1377 #define ROCKER_OP_FLAG_LEARNED          BIT(2)
1378 #define ROCKER_OP_FLAG_REFRESH          BIT(3)
1379
1380 static int rocker_port_fdb(struct rocker_port *rocker_port,
1381                            const unsigned char *addr,
1382                            __be16 vlan_id, int flags);
1383
1384 static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1385                                       const struct rocker_tlv *info)
1386 {
1387         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1388         unsigned int port_number;
1389         struct rocker_port *rocker_port;
1390         unsigned char *addr;
1391         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1392         __be16 vlan_id;
1393
1394         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1395         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1396             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1397             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1398                 return -EIO;
1399         port_number =
1400                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1401         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1402         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1403
1404         if (port_number >= rocker->port_count)
1405                 return -EINVAL;
1406
1407         rocker_port = rocker->ports[port_number];
1408
1409         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1410             rocker_port->stp_state != BR_STATE_FORWARDING)
1411                 return 0;
1412
1413         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
1414 }
1415
1416 static int rocker_event_process(struct rocker *rocker,
1417                                 struct rocker_desc_info *desc_info)
1418 {
1419         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1420         struct rocker_tlv *info;
1421         u16 type;
1422
1423         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1424         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1425             !attrs[ROCKER_TLV_EVENT_INFO])
1426                 return -EIO;
1427
1428         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1429         info = attrs[ROCKER_TLV_EVENT_INFO];
1430
1431         switch (type) {
1432         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1433                 return rocker_event_link_change(rocker, info);
1434         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1435                 return rocker_event_mac_vlan_seen(rocker, info);
1436         }
1437
1438         return -EOPNOTSUPP;
1439 }
1440
1441 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1442 {
1443         struct rocker *rocker = dev_id;
1444         struct pci_dev *pdev = rocker->pdev;
1445         struct rocker_desc_info *desc_info;
1446         u32 credits = 0;
1447         int err;
1448
1449         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1450                 err = rocker_desc_err(desc_info);
1451                 if (err) {
1452                         dev_err(&pdev->dev, "event desc received with err %d\n",
1453                                 err);
1454                 } else {
1455                         err = rocker_event_process(rocker, desc_info);
1456                         if (err)
1457                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1458                                         err);
1459                 }
1460                 rocker_desc_gen_clear(desc_info);
1461                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1462                 credits++;
1463         }
1464         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1465
1466         return IRQ_HANDLED;
1467 }
1468
1469 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1470 {
1471         struct rocker_port *rocker_port = dev_id;
1472
1473         napi_schedule(&rocker_port->napi_tx);
1474         return IRQ_HANDLED;
1475 }
1476
1477 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1478 {
1479         struct rocker_port *rocker_port = dev_id;
1480
1481         napi_schedule(&rocker_port->napi_rx);
1482         return IRQ_HANDLED;
1483 }
1484
1485 /********************
1486  * Command interface
1487  ********************/
1488
1489 typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1490                                struct rocker_port *rocker_port,
1491                                struct rocker_desc_info *desc_info,
1492                                void *priv);
1493
1494 static int rocker_cmd_exec(struct rocker *rocker,
1495                            struct rocker_port *rocker_port,
1496                            rocker_cmd_cb_t prepare, void *prepare_priv,
1497                            rocker_cmd_cb_t process, void *process_priv,
1498                            bool nowait)
1499 {
1500         struct rocker_desc_info *desc_info;
1501         struct rocker_wait *wait;
1502         unsigned long flags;
1503         int err;
1504
1505         wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL);
1506         if (!wait)
1507                 return -ENOMEM;
1508         wait->nowait = nowait;
1509
1510         spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1511         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1512         if (!desc_info) {
1513                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1514                 err = -EAGAIN;
1515                 goto out;
1516         }
1517         err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1518         if (err) {
1519                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1520                 goto out;
1521         }
1522         rocker_desc_cookie_ptr_set(desc_info, wait);
1523         rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1524         spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1525
1526         if (nowait)
1527                 return 0;
1528
1529         if (!rocker_wait_event_timeout(wait, HZ / 10))
1530                 return -EIO;
1531
1532         err = rocker_desc_err(desc_info);
1533         if (err)
1534                 return err;
1535
1536         if (process)
1537                 err = process(rocker, rocker_port, desc_info, process_priv);
1538
1539         rocker_desc_gen_clear(desc_info);
1540 out:
1541         rocker_wait_destroy(wait);
1542         return err;
1543 }
1544
1545 static int
1546 rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1547                                   struct rocker_port *rocker_port,
1548                                   struct rocker_desc_info *desc_info,
1549                                   void *priv)
1550 {
1551         struct rocker_tlv *cmd_info;
1552
1553         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1554                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1555                 return -EMSGSIZE;
1556         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1557         if (!cmd_info)
1558                 return -EMSGSIZE;
1559         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1560                                rocker_port->pport))
1561                 return -EMSGSIZE;
1562         rocker_tlv_nest_end(desc_info, cmd_info);
1563         return 0;
1564 }
1565
1566 static int
1567 rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1568                                           struct rocker_port *rocker_port,
1569                                           struct rocker_desc_info *desc_info,
1570                                           void *priv)
1571 {
1572         struct ethtool_cmd *ecmd = priv;
1573         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1574         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1575         u32 speed;
1576         u8 duplex;
1577         u8 autoneg;
1578
1579         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1580         if (!attrs[ROCKER_TLV_CMD_INFO])
1581                 return -EIO;
1582
1583         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1584                                 attrs[ROCKER_TLV_CMD_INFO]);
1585         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1586             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1587             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1588                 return -EIO;
1589
1590         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1591         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1592         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1593
1594         ecmd->transceiver = XCVR_INTERNAL;
1595         ecmd->supported = SUPPORTED_TP;
1596         ecmd->phy_address = 0xff;
1597         ecmd->port = PORT_TP;
1598         ethtool_cmd_speed_set(ecmd, speed);
1599         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1600         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1601
1602         return 0;
1603 }
1604
1605 static int
1606 rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1607                                           struct rocker_port *rocker_port,
1608                                           struct rocker_desc_info *desc_info,
1609                                           void *priv)
1610 {
1611         unsigned char *macaddr = priv;
1612         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1613         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1614         struct rocker_tlv *attr;
1615
1616         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1617         if (!attrs[ROCKER_TLV_CMD_INFO])
1618                 return -EIO;
1619
1620         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1621                                 attrs[ROCKER_TLV_CMD_INFO]);
1622         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1623         if (!attr)
1624                 return -EIO;
1625
1626         if (rocker_tlv_len(attr) != ETH_ALEN)
1627                 return -EINVAL;
1628
1629         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1630         return 0;
1631 }
1632
1633 static int
1634 rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1635                                           struct rocker_port *rocker_port,
1636                                           struct rocker_desc_info *desc_info,
1637                                           void *priv)
1638 {
1639         struct ethtool_cmd *ecmd = priv;
1640         struct rocker_tlv *cmd_info;
1641
1642         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1643                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1644                 return -EMSGSIZE;
1645         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1646         if (!cmd_info)
1647                 return -EMSGSIZE;
1648         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1649                                rocker_port->pport))
1650                 return -EMSGSIZE;
1651         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1652                                ethtool_cmd_speed(ecmd)))
1653                 return -EMSGSIZE;
1654         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1655                               ecmd->duplex))
1656                 return -EMSGSIZE;
1657         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1658                               ecmd->autoneg))
1659                 return -EMSGSIZE;
1660         rocker_tlv_nest_end(desc_info, cmd_info);
1661         return 0;
1662 }
1663
1664 static int
1665 rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1666                                           struct rocker_port *rocker_port,
1667                                           struct rocker_desc_info *desc_info,
1668                                           void *priv)
1669 {
1670         unsigned char *macaddr = priv;
1671         struct rocker_tlv *cmd_info;
1672
1673         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1674                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1675                 return -EMSGSIZE;
1676         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1677         if (!cmd_info)
1678                 return -EMSGSIZE;
1679         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1680                                rocker_port->pport))
1681                 return -EMSGSIZE;
1682         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1683                            ETH_ALEN, macaddr))
1684                 return -EMSGSIZE;
1685         rocker_tlv_nest_end(desc_info, cmd_info);
1686         return 0;
1687 }
1688
1689 static int
1690 rocker_cmd_set_port_learning_prep(struct rocker *rocker,
1691                                   struct rocker_port *rocker_port,
1692                                   struct rocker_desc_info *desc_info,
1693                                   void *priv)
1694 {
1695         struct rocker_tlv *cmd_info;
1696
1697         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1698                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1699                 return -EMSGSIZE;
1700         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1701         if (!cmd_info)
1702                 return -EMSGSIZE;
1703         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1704                                rocker_port->pport))
1705                 return -EMSGSIZE;
1706         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1707                               !!(rocker_port->brport_flags & BR_LEARNING)))
1708                 return -EMSGSIZE;
1709         rocker_tlv_nest_end(desc_info, cmd_info);
1710         return 0;
1711 }
1712
1713 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1714                                                 struct ethtool_cmd *ecmd)
1715 {
1716         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1717                                rocker_cmd_get_port_settings_prep, NULL,
1718                                rocker_cmd_get_port_settings_ethtool_proc,
1719                                ecmd, false);
1720 }
1721
1722 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1723                                                 unsigned char *macaddr)
1724 {
1725         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1726                                rocker_cmd_get_port_settings_prep, NULL,
1727                                rocker_cmd_get_port_settings_macaddr_proc,
1728                                macaddr, false);
1729 }
1730
1731 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1732                                                 struct ethtool_cmd *ecmd)
1733 {
1734         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1735                                rocker_cmd_set_port_settings_ethtool_prep,
1736                                ecmd, NULL, NULL, false);
1737 }
1738
1739 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1740                                                 unsigned char *macaddr)
1741 {
1742         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1743                                rocker_cmd_set_port_settings_macaddr_prep,
1744                                macaddr, NULL, NULL, false);
1745 }
1746
1747 static int rocker_port_set_learning(struct rocker_port *rocker_port)
1748 {
1749         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1750                                rocker_cmd_set_port_learning_prep,
1751                                NULL, NULL, NULL, false);
1752 }
1753
1754 static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1755                                            struct rocker_flow_tbl_entry *entry)
1756 {
1757         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1758                                entry->key.ig_port.in_pport))
1759                 return -EMSGSIZE;
1760         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1761                                entry->key.ig_port.in_pport_mask))
1762                 return -EMSGSIZE;
1763         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1764                                entry->key.ig_port.goto_tbl))
1765                 return -EMSGSIZE;
1766
1767         return 0;
1768 }
1769
1770 static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1771                                         struct rocker_flow_tbl_entry *entry)
1772 {
1773         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1774                                entry->key.vlan.in_pport))
1775                 return -EMSGSIZE;
1776         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1777                                 entry->key.vlan.vlan_id))
1778                 return -EMSGSIZE;
1779         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1780                                 entry->key.vlan.vlan_id_mask))
1781                 return -EMSGSIZE;
1782         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1783                                entry->key.vlan.goto_tbl))
1784                 return -EMSGSIZE;
1785         if (entry->key.vlan.untagged &&
1786             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1787                                 entry->key.vlan.new_vlan_id))
1788                 return -EMSGSIZE;
1789
1790         return 0;
1791 }
1792
1793 static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1794                                             struct rocker_flow_tbl_entry *entry)
1795 {
1796         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1797                                entry->key.term_mac.in_pport))
1798                 return -EMSGSIZE;
1799         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1800                                entry->key.term_mac.in_pport_mask))
1801                 return -EMSGSIZE;
1802         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1803                                 entry->key.term_mac.eth_type))
1804                 return -EMSGSIZE;
1805         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1806                            ETH_ALEN, entry->key.term_mac.eth_dst))
1807                 return -EMSGSIZE;
1808         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1809                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1810                 return -EMSGSIZE;
1811         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1812                                 entry->key.term_mac.vlan_id))
1813                 return -EMSGSIZE;
1814         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1815                                 entry->key.term_mac.vlan_id_mask))
1816                 return -EMSGSIZE;
1817         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1818                                entry->key.term_mac.goto_tbl))
1819                 return -EMSGSIZE;
1820         if (entry->key.term_mac.copy_to_cpu &&
1821             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1822                               entry->key.term_mac.copy_to_cpu))
1823                 return -EMSGSIZE;
1824
1825         return 0;
1826 }
1827
1828 static int
1829 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1830                                       struct rocker_flow_tbl_entry *entry)
1831 {
1832         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1833                                 entry->key.ucast_routing.eth_type))
1834                 return -EMSGSIZE;
1835         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1836                                 entry->key.ucast_routing.dst4))
1837                 return -EMSGSIZE;
1838         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1839                                 entry->key.ucast_routing.dst4_mask))
1840                 return -EMSGSIZE;
1841         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1842                                entry->key.ucast_routing.goto_tbl))
1843                 return -EMSGSIZE;
1844         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1845                                entry->key.ucast_routing.group_id))
1846                 return -EMSGSIZE;
1847
1848         return 0;
1849 }
1850
1851 static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
1852                                           struct rocker_flow_tbl_entry *entry)
1853 {
1854         if (entry->key.bridge.has_eth_dst &&
1855             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1856                            ETH_ALEN, entry->key.bridge.eth_dst))
1857                 return -EMSGSIZE;
1858         if (entry->key.bridge.has_eth_dst_mask &&
1859             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1860                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
1861                 return -EMSGSIZE;
1862         if (entry->key.bridge.vlan_id &&
1863             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1864                                 entry->key.bridge.vlan_id))
1865                 return -EMSGSIZE;
1866         if (entry->key.bridge.tunnel_id &&
1867             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
1868                                entry->key.bridge.tunnel_id))
1869                 return -EMSGSIZE;
1870         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1871                                entry->key.bridge.goto_tbl))
1872                 return -EMSGSIZE;
1873         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1874                                entry->key.bridge.group_id))
1875                 return -EMSGSIZE;
1876         if (entry->key.bridge.copy_to_cpu &&
1877             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1878                               entry->key.bridge.copy_to_cpu))
1879                 return -EMSGSIZE;
1880
1881         return 0;
1882 }
1883
1884 static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
1885                                        struct rocker_flow_tbl_entry *entry)
1886 {
1887         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1888                                entry->key.acl.in_pport))
1889                 return -EMSGSIZE;
1890         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1891                                entry->key.acl.in_pport_mask))
1892                 return -EMSGSIZE;
1893         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1894                            ETH_ALEN, entry->key.acl.eth_src))
1895                 return -EMSGSIZE;
1896         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
1897                            ETH_ALEN, entry->key.acl.eth_src_mask))
1898                 return -EMSGSIZE;
1899         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1900                            ETH_ALEN, entry->key.acl.eth_dst))
1901                 return -EMSGSIZE;
1902         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1903                            ETH_ALEN, entry->key.acl.eth_dst_mask))
1904                 return -EMSGSIZE;
1905         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1906                                 entry->key.acl.eth_type))
1907                 return -EMSGSIZE;
1908         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1909                                 entry->key.acl.vlan_id))
1910                 return -EMSGSIZE;
1911         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1912                                 entry->key.acl.vlan_id_mask))
1913                 return -EMSGSIZE;
1914
1915         switch (ntohs(entry->key.acl.eth_type)) {
1916         case ETH_P_IP:
1917         case ETH_P_IPV6:
1918                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
1919                                       entry->key.acl.ip_proto))
1920                         return -EMSGSIZE;
1921                 if (rocker_tlv_put_u8(desc_info,
1922                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
1923                                       entry->key.acl.ip_proto_mask))
1924                         return -EMSGSIZE;
1925                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
1926                                       entry->key.acl.ip_tos & 0x3f))
1927                         return -EMSGSIZE;
1928                 if (rocker_tlv_put_u8(desc_info,
1929                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
1930                                       entry->key.acl.ip_tos_mask & 0x3f))
1931                         return -EMSGSIZE;
1932                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
1933                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
1934                         return -EMSGSIZE;
1935                 if (rocker_tlv_put_u8(desc_info,
1936                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
1937                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
1938                         return -EMSGSIZE;
1939                 break;
1940         }
1941
1942         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
1943             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1944                                entry->key.acl.group_id))
1945                 return -EMSGSIZE;
1946
1947         return 0;
1948 }
1949
1950 static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
1951                                    struct rocker_port *rocker_port,
1952                                    struct rocker_desc_info *desc_info,
1953                                    void *priv)
1954 {
1955         struct rocker_flow_tbl_entry *entry = priv;
1956         struct rocker_tlv *cmd_info;
1957         int err = 0;
1958
1959         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
1960                 return -EMSGSIZE;
1961         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1962         if (!cmd_info)
1963                 return -EMSGSIZE;
1964         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
1965                                entry->key.tbl_id))
1966                 return -EMSGSIZE;
1967         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
1968                                entry->key.priority))
1969                 return -EMSGSIZE;
1970         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
1971                 return -EMSGSIZE;
1972         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1973                                entry->cookie))
1974                 return -EMSGSIZE;
1975
1976         switch (entry->key.tbl_id) {
1977         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
1978                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
1979                 break;
1980         case ROCKER_OF_DPA_TABLE_ID_VLAN:
1981                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
1982                 break;
1983         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
1984                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
1985                 break;
1986         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
1987                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
1988                 break;
1989         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
1990                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
1991                 break;
1992         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
1993                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
1994                 break;
1995         default:
1996                 err = -ENOTSUPP;
1997                 break;
1998         }
1999
2000         if (err)
2001                 return err;
2002
2003         rocker_tlv_nest_end(desc_info, cmd_info);
2004
2005         return 0;
2006 }
2007
2008 static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
2009                                    struct rocker_port *rocker_port,
2010                                    struct rocker_desc_info *desc_info,
2011                                    void *priv)
2012 {
2013         const struct rocker_flow_tbl_entry *entry = priv;
2014         struct rocker_tlv *cmd_info;
2015
2016         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2017                 return -EMSGSIZE;
2018         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2019         if (!cmd_info)
2020                 return -EMSGSIZE;
2021         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2022                                entry->cookie))
2023                 return -EMSGSIZE;
2024         rocker_tlv_nest_end(desc_info, cmd_info);
2025
2026         return 0;
2027 }
2028
2029 static int
2030 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2031                                       struct rocker_group_tbl_entry *entry)
2032 {
2033         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2034                                ROCKER_GROUP_PORT_GET(entry->group_id)))
2035                 return -EMSGSIZE;
2036         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2037                               entry->l2_interface.pop_vlan))
2038                 return -EMSGSIZE;
2039
2040         return 0;
2041 }
2042
2043 static int
2044 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2045                                     struct rocker_group_tbl_entry *entry)
2046 {
2047         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2048                                entry->l2_rewrite.group_id))
2049                 return -EMSGSIZE;
2050         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2051             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2052                            ETH_ALEN, entry->l2_rewrite.eth_src))
2053                 return -EMSGSIZE;
2054         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2055             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2056                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2057                 return -EMSGSIZE;
2058         if (entry->l2_rewrite.vlan_id &&
2059             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2060                                 entry->l2_rewrite.vlan_id))
2061                 return -EMSGSIZE;
2062
2063         return 0;
2064 }
2065
2066 static int
2067 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2068                                    struct rocker_group_tbl_entry *entry)
2069 {
2070         int i;
2071         struct rocker_tlv *group_ids;
2072
2073         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2074                                entry->group_count))
2075                 return -EMSGSIZE;
2076
2077         group_ids = rocker_tlv_nest_start(desc_info,
2078                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2079         if (!group_ids)
2080                 return -EMSGSIZE;
2081
2082         for (i = 0; i < entry->group_count; i++)
2083                 /* Note TLV array is 1-based */
2084                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2085                         return -EMSGSIZE;
2086
2087         rocker_tlv_nest_end(desc_info, group_ids);
2088
2089         return 0;
2090 }
2091
2092 static int
2093 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2094                                     struct rocker_group_tbl_entry *entry)
2095 {
2096         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2097             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2098                            ETH_ALEN, entry->l3_unicast.eth_src))
2099                 return -EMSGSIZE;
2100         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2101             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2102                            ETH_ALEN, entry->l3_unicast.eth_dst))
2103                 return -EMSGSIZE;
2104         if (entry->l3_unicast.vlan_id &&
2105             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2106                                 entry->l3_unicast.vlan_id))
2107                 return -EMSGSIZE;
2108         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2109                               entry->l3_unicast.ttl_check))
2110                 return -EMSGSIZE;
2111         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2112                                entry->l3_unicast.group_id))
2113                 return -EMSGSIZE;
2114
2115         return 0;
2116 }
2117
2118 static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2119                                     struct rocker_port *rocker_port,
2120                                     struct rocker_desc_info *desc_info,
2121                                     void *priv)
2122 {
2123         struct rocker_group_tbl_entry *entry = priv;
2124         struct rocker_tlv *cmd_info;
2125         int err = 0;
2126
2127         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2128                 return -EMSGSIZE;
2129         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2130         if (!cmd_info)
2131                 return -EMSGSIZE;
2132
2133         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2134                                entry->group_id))
2135                 return -EMSGSIZE;
2136
2137         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2138         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2139                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2140                 break;
2141         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2142                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2143                 break;
2144         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2145         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2146                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2147                 break;
2148         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2149                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2150                 break;
2151         default:
2152                 err = -ENOTSUPP;
2153                 break;
2154         }
2155
2156         if (err)
2157                 return err;
2158
2159         rocker_tlv_nest_end(desc_info, cmd_info);
2160
2161         return 0;
2162 }
2163
2164 static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2165                                     struct rocker_port *rocker_port,
2166                                     struct rocker_desc_info *desc_info,
2167                                     void *priv)
2168 {
2169         const struct rocker_group_tbl_entry *entry = priv;
2170         struct rocker_tlv *cmd_info;
2171
2172         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2173                 return -EMSGSIZE;
2174         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2175         if (!cmd_info)
2176                 return -EMSGSIZE;
2177         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2178                                entry->group_id))
2179                 return -EMSGSIZE;
2180         rocker_tlv_nest_end(desc_info, cmd_info);
2181
2182         return 0;
2183 }
2184
2185 /***************************************************
2186  * Flow, group, FDB, internal VLAN and neigh tables
2187  ***************************************************/
2188
2189 static int rocker_init_tbls(struct rocker *rocker)
2190 {
2191         hash_init(rocker->flow_tbl);
2192         spin_lock_init(&rocker->flow_tbl_lock);
2193
2194         hash_init(rocker->group_tbl);
2195         spin_lock_init(&rocker->group_tbl_lock);
2196
2197         hash_init(rocker->fdb_tbl);
2198         spin_lock_init(&rocker->fdb_tbl_lock);
2199
2200         hash_init(rocker->internal_vlan_tbl);
2201         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2202
2203         hash_init(rocker->neigh_tbl);
2204         spin_lock_init(&rocker->neigh_tbl_lock);
2205
2206         return 0;
2207 }
2208
2209 static void rocker_free_tbls(struct rocker *rocker)
2210 {
2211         unsigned long flags;
2212         struct rocker_flow_tbl_entry *flow_entry;
2213         struct rocker_group_tbl_entry *group_entry;
2214         struct rocker_fdb_tbl_entry *fdb_entry;
2215         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2216         struct rocker_neigh_tbl_entry *neigh_entry;
2217         struct hlist_node *tmp;
2218         int bkt;
2219
2220         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2221         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2222                 hash_del(&flow_entry->entry);
2223         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2224
2225         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2226         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2227                 hash_del(&group_entry->entry);
2228         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2229
2230         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2231         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2232                 hash_del(&fdb_entry->entry);
2233         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2234
2235         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2236         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2237                            tmp, internal_vlan_entry, entry)
2238                 hash_del(&internal_vlan_entry->entry);
2239         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2240
2241         spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2242         hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2243                 hash_del(&neigh_entry->entry);
2244         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2245 }
2246
2247 static struct rocker_flow_tbl_entry *
2248 rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2249 {
2250         struct rocker_flow_tbl_entry *found;
2251         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2252
2253         hash_for_each_possible(rocker->flow_tbl, found,
2254                                entry, match->key_crc32) {
2255                 if (memcmp(&found->key, &match->key, key_len) == 0)
2256                         return found;
2257         }
2258
2259         return NULL;
2260 }
2261
2262 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2263                                struct rocker_flow_tbl_entry *match,
2264                                bool nowait)
2265 {
2266         struct rocker *rocker = rocker_port->rocker;
2267         struct rocker_flow_tbl_entry *found;
2268         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2269         unsigned long flags;
2270
2271         match->key_crc32 = crc32(~0, &match->key, key_len);
2272
2273         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2274
2275         found = rocker_flow_tbl_find(rocker, match);
2276
2277         if (found) {
2278                 match->cookie = found->cookie;
2279                 hash_del(&found->entry);
2280                 kfree(found);
2281                 found = match;
2282                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2283         } else {
2284                 found = match;
2285                 found->cookie = rocker->flow_tbl_next_cookie++;
2286                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2287         }
2288
2289         hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2290
2291         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2292
2293         return rocker_cmd_exec(rocker, rocker_port,
2294                                rocker_cmd_flow_tbl_add,
2295                                found, NULL, NULL, nowait);
2296 }
2297
2298 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2299                                struct rocker_flow_tbl_entry *match,
2300                                bool nowait)
2301 {
2302         struct rocker *rocker = rocker_port->rocker;
2303         struct rocker_flow_tbl_entry *found;
2304         size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2305         unsigned long flags;
2306         int err = 0;
2307
2308         match->key_crc32 = crc32(~0, &match->key, key_len);
2309
2310         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2311
2312         found = rocker_flow_tbl_find(rocker, match);
2313
2314         if (found) {
2315                 hash_del(&found->entry);
2316                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2317         }
2318
2319         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2320
2321         kfree(match);
2322
2323         if (found) {
2324                 err = rocker_cmd_exec(rocker, rocker_port,
2325                                       rocker_cmd_flow_tbl_del,
2326                                       found, NULL, NULL, nowait);
2327                 kfree(found);
2328         }
2329
2330         return err;
2331 }
2332
2333 static gfp_t rocker_op_flags_gfp(int flags)
2334 {
2335         return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL;
2336 }
2337
2338 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2339                               int flags, struct rocker_flow_tbl_entry *entry)
2340 {
2341         bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2342
2343         if (flags & ROCKER_OP_FLAG_REMOVE)
2344                 return rocker_flow_tbl_del(rocker_port, entry, nowait);
2345         else
2346                 return rocker_flow_tbl_add(rocker_port, entry, nowait);
2347 }
2348
2349 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2350                                    int flags, u32 in_pport, u32 in_pport_mask,
2351                                    enum rocker_of_dpa_table_id goto_tbl)
2352 {
2353         struct rocker_flow_tbl_entry *entry;
2354
2355         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2356         if (!entry)
2357                 return -ENOMEM;
2358
2359         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2360         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2361         entry->key.ig_port.in_pport = in_pport;
2362         entry->key.ig_port.in_pport_mask = in_pport_mask;
2363         entry->key.ig_port.goto_tbl = goto_tbl;
2364
2365         return rocker_flow_tbl_do(rocker_port, flags, entry);
2366 }
2367
2368 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2369                                 int flags, u32 in_pport,
2370                                 __be16 vlan_id, __be16 vlan_id_mask,
2371                                 enum rocker_of_dpa_table_id goto_tbl,
2372                                 bool untagged, __be16 new_vlan_id)
2373 {
2374         struct rocker_flow_tbl_entry *entry;
2375
2376         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2377         if (!entry)
2378                 return -ENOMEM;
2379
2380         entry->key.priority = ROCKER_PRIORITY_VLAN;
2381         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2382         entry->key.vlan.in_pport = in_pport;
2383         entry->key.vlan.vlan_id = vlan_id;
2384         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2385         entry->key.vlan.goto_tbl = goto_tbl;
2386
2387         entry->key.vlan.untagged = untagged;
2388         entry->key.vlan.new_vlan_id = new_vlan_id;
2389
2390         return rocker_flow_tbl_do(rocker_port, flags, entry);
2391 }
2392
2393 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2394                                     u32 in_pport, u32 in_pport_mask,
2395                                     __be16 eth_type, const u8 *eth_dst,
2396                                     const u8 *eth_dst_mask, __be16 vlan_id,
2397                                     __be16 vlan_id_mask, bool copy_to_cpu,
2398                                     int flags)
2399 {
2400         struct rocker_flow_tbl_entry *entry;
2401
2402         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2403         if (!entry)
2404                 return -ENOMEM;
2405
2406         if (is_multicast_ether_addr(eth_dst)) {
2407                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2408                 entry->key.term_mac.goto_tbl =
2409                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2410         } else {
2411                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2412                 entry->key.term_mac.goto_tbl =
2413                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2414         }
2415
2416         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2417         entry->key.term_mac.in_pport = in_pport;
2418         entry->key.term_mac.in_pport_mask = in_pport_mask;
2419         entry->key.term_mac.eth_type = eth_type;
2420         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2421         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2422         entry->key.term_mac.vlan_id = vlan_id;
2423         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2424         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2425
2426         return rocker_flow_tbl_do(rocker_port, flags, entry);
2427 }
2428
2429 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2430                                   int flags,
2431                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2432                                   __be16 vlan_id, u32 tunnel_id,
2433                                   enum rocker_of_dpa_table_id goto_tbl,
2434                                   u32 group_id, bool copy_to_cpu)
2435 {
2436         struct rocker_flow_tbl_entry *entry;
2437         u32 priority;
2438         bool vlan_bridging = !!vlan_id;
2439         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2440         bool wild = false;
2441
2442         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2443         if (!entry)
2444                 return -ENOMEM;
2445
2446         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2447
2448         if (eth_dst) {
2449                 entry->key.bridge.has_eth_dst = 1;
2450                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2451         }
2452         if (eth_dst_mask) {
2453                 entry->key.bridge.has_eth_dst_mask = 1;
2454                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2455                 if (memcmp(eth_dst_mask, ff_mac, ETH_ALEN))
2456                         wild = true;
2457         }
2458
2459         priority = ROCKER_PRIORITY_UNKNOWN;
2460         if (vlan_bridging && dflt && wild)
2461                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2462         else if (vlan_bridging && dflt && !wild)
2463                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2464         else if (vlan_bridging && !dflt)
2465                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2466         else if (!vlan_bridging && dflt && wild)
2467                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2468         else if (!vlan_bridging && dflt && !wild)
2469                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2470         else if (!vlan_bridging && !dflt)
2471                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2472
2473         entry->key.priority = priority;
2474         entry->key.bridge.vlan_id = vlan_id;
2475         entry->key.bridge.tunnel_id = tunnel_id;
2476         entry->key.bridge.goto_tbl = goto_tbl;
2477         entry->key.bridge.group_id = group_id;
2478         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2479
2480         return rocker_flow_tbl_do(rocker_port, flags, entry);
2481 }
2482
2483 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2484                                           __be16 eth_type, __be32 dst,
2485                                           __be32 dst_mask, u32 priority,
2486                                           enum rocker_of_dpa_table_id goto_tbl,
2487                                           u32 group_id, int flags)
2488 {
2489         struct rocker_flow_tbl_entry *entry;
2490
2491         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2492         if (!entry)
2493                 return -ENOMEM;
2494
2495         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2496         entry->key.priority = priority;
2497         entry->key.ucast_routing.eth_type = eth_type;
2498         entry->key.ucast_routing.dst4 = dst;
2499         entry->key.ucast_routing.dst4_mask = dst_mask;
2500         entry->key.ucast_routing.goto_tbl = goto_tbl;
2501         entry->key.ucast_routing.group_id = group_id;
2502         entry->key_len = offsetof(struct rocker_flow_tbl_key,
2503                                   ucast_routing.group_id);
2504
2505         return rocker_flow_tbl_do(rocker_port, flags, entry);
2506 }
2507
2508 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2509                                int flags, u32 in_pport,
2510                                u32 in_pport_mask,
2511                                const u8 *eth_src, const u8 *eth_src_mask,
2512                                const u8 *eth_dst, const u8 *eth_dst_mask,
2513                                __be16 eth_type,
2514                                __be16 vlan_id, __be16 vlan_id_mask,
2515                                u8 ip_proto, u8 ip_proto_mask,
2516                                u8 ip_tos, u8 ip_tos_mask,
2517                                u32 group_id)
2518 {
2519         u32 priority;
2520         struct rocker_flow_tbl_entry *entry;
2521
2522         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2523         if (!entry)
2524                 return -ENOMEM;
2525
2526         priority = ROCKER_PRIORITY_ACL_NORMAL;
2527         if (eth_dst && eth_dst_mask) {
2528                 if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0)
2529                         priority = ROCKER_PRIORITY_ACL_DFLT;
2530                 else if (is_link_local_ether_addr(eth_dst))
2531                         priority = ROCKER_PRIORITY_ACL_CTRL;
2532         }
2533
2534         entry->key.priority = priority;
2535         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2536         entry->key.acl.in_pport = in_pport;
2537         entry->key.acl.in_pport_mask = in_pport_mask;
2538
2539         if (eth_src)
2540                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2541         if (eth_src_mask)
2542                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2543         if (eth_dst)
2544                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2545         if (eth_dst_mask)
2546                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2547
2548         entry->key.acl.eth_type = eth_type;
2549         entry->key.acl.vlan_id = vlan_id;
2550         entry->key.acl.vlan_id_mask = vlan_id_mask;
2551         entry->key.acl.ip_proto = ip_proto;
2552         entry->key.acl.ip_proto_mask = ip_proto_mask;
2553         entry->key.acl.ip_tos = ip_tos;
2554         entry->key.acl.ip_tos_mask = ip_tos_mask;
2555         entry->key.acl.group_id = group_id;
2556
2557         return rocker_flow_tbl_do(rocker_port, flags, entry);
2558 }
2559
2560 static struct rocker_group_tbl_entry *
2561 rocker_group_tbl_find(struct rocker *rocker,
2562                       struct rocker_group_tbl_entry *match)
2563 {
2564         struct rocker_group_tbl_entry *found;
2565
2566         hash_for_each_possible(rocker->group_tbl, found,
2567                                entry, match->group_id) {
2568                 if (found->group_id == match->group_id)
2569                         return found;
2570         }
2571
2572         return NULL;
2573 }
2574
2575 static void rocker_group_tbl_entry_free(struct rocker_group_tbl_entry *entry)
2576 {
2577         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2578         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2579         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2580                 kfree(entry->group_ids);
2581                 break;
2582         default:
2583                 break;
2584         }
2585         kfree(entry);
2586 }
2587
2588 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2589                                 struct rocker_group_tbl_entry *match,
2590                                 bool nowait)
2591 {
2592         struct rocker *rocker = rocker_port->rocker;
2593         struct rocker_group_tbl_entry *found;
2594         unsigned long flags;
2595
2596         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2597
2598         found = rocker_group_tbl_find(rocker, match);
2599
2600         if (found) {
2601                 hash_del(&found->entry);
2602                 rocker_group_tbl_entry_free(found);
2603                 found = match;
2604                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2605         } else {
2606                 found = match;
2607                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2608         }
2609
2610         hash_add(rocker->group_tbl, &found->entry, found->group_id);
2611
2612         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2613
2614         return rocker_cmd_exec(rocker, rocker_port,
2615                                rocker_cmd_group_tbl_add,
2616                                found, NULL, NULL, nowait);
2617 }
2618
2619 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2620                                 struct rocker_group_tbl_entry *match,
2621                                 bool nowait)
2622 {
2623         struct rocker *rocker = rocker_port->rocker;
2624         struct rocker_group_tbl_entry *found;
2625         unsigned long flags;
2626         int err = 0;
2627
2628         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2629
2630         found = rocker_group_tbl_find(rocker, match);
2631
2632         if (found) {
2633                 hash_del(&found->entry);
2634                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2635         }
2636
2637         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2638
2639         rocker_group_tbl_entry_free(match);
2640
2641         if (found) {
2642                 err = rocker_cmd_exec(rocker, rocker_port,
2643                                       rocker_cmd_group_tbl_del,
2644                                       found, NULL, NULL, nowait);
2645                 rocker_group_tbl_entry_free(found);
2646         }
2647
2648         return err;
2649 }
2650
2651 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2652                                int flags, struct rocker_group_tbl_entry *entry)
2653 {
2654         bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2655
2656         if (flags & ROCKER_OP_FLAG_REMOVE)
2657                 return rocker_group_tbl_del(rocker_port, entry, nowait);
2658         else
2659                 return rocker_group_tbl_add(rocker_port, entry, nowait);
2660 }
2661
2662 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2663                                      int flags, __be16 vlan_id,
2664                                      u32 out_pport, int pop_vlan)
2665 {
2666         struct rocker_group_tbl_entry *entry;
2667
2668         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2669         if (!entry)
2670                 return -ENOMEM;
2671
2672         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2673         entry->l2_interface.pop_vlan = pop_vlan;
2674
2675         return rocker_group_tbl_do(rocker_port, flags, entry);
2676 }
2677
2678 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2679                                    int flags, u8 group_count,
2680                                    u32 *group_ids, u32 group_id)
2681 {
2682         struct rocker_group_tbl_entry *entry;
2683
2684         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2685         if (!entry)
2686                 return -ENOMEM;
2687
2688         entry->group_id = group_id;
2689         entry->group_count = group_count;
2690
2691         entry->group_ids = kcalloc(group_count, sizeof(u32),
2692                                    rocker_op_flags_gfp(flags));
2693         if (!entry->group_ids) {
2694                 kfree(entry);
2695                 return -ENOMEM;
2696         }
2697         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2698
2699         return rocker_group_tbl_do(rocker_port, flags, entry);
2700 }
2701
2702 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2703                                  int flags, __be16 vlan_id,
2704                                  u8 group_count, u32 *group_ids,
2705                                  u32 group_id)
2706 {
2707         return rocker_group_l2_fan_out(rocker_port, flags,
2708                                        group_count, group_ids,
2709                                        group_id);
2710 }
2711
2712 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2713                                    int flags, u32 index, u8 *src_mac,
2714                                    u8 *dst_mac, __be16 vlan_id,
2715                                    bool ttl_check, u32 pport)
2716 {
2717         struct rocker_group_tbl_entry *entry;
2718
2719         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2720         if (!entry)
2721                 return -ENOMEM;
2722
2723         entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2724         if (src_mac)
2725                 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2726         if (dst_mac)
2727                 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2728         entry->l3_unicast.vlan_id = vlan_id;
2729         entry->l3_unicast.ttl_check = ttl_check;
2730         entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2731
2732         return rocker_group_tbl_do(rocker_port, flags, entry);
2733 }
2734
2735 static struct rocker_neigh_tbl_entry *
2736         rocker_neigh_tbl_find(struct rocker *rocker, __be32 ip_addr)
2737 {
2738         struct rocker_neigh_tbl_entry *found;
2739
2740         hash_for_each_possible(rocker->neigh_tbl, found,
2741                                entry, be32_to_cpu(ip_addr))
2742                 if (found->ip_addr == ip_addr)
2743                         return found;
2744
2745         return NULL;
2746 }
2747
2748 static void _rocker_neigh_add(struct rocker *rocker,
2749                               struct rocker_neigh_tbl_entry *entry)
2750 {
2751         entry->index = rocker->neigh_tbl_next_index++;
2752         entry->ref_count++;
2753         hash_add(rocker->neigh_tbl, &entry->entry,
2754                  be32_to_cpu(entry->ip_addr));
2755 }
2756
2757 static void _rocker_neigh_del(struct rocker *rocker,
2758                               struct rocker_neigh_tbl_entry *entry)
2759 {
2760         if (--entry->ref_count == 0) {
2761                 hash_del(&entry->entry);
2762                 kfree(entry);
2763         }
2764 }
2765
2766 static void _rocker_neigh_update(struct rocker *rocker,
2767                                  struct rocker_neigh_tbl_entry *entry,
2768                                  u8 *eth_dst, bool ttl_check)
2769 {
2770         if (eth_dst) {
2771                 ether_addr_copy(entry->eth_dst, eth_dst);
2772                 entry->ttl_check = ttl_check;
2773         } else {
2774                 entry->ref_count++;
2775         }
2776 }
2777
2778 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2779                                   int flags, __be32 ip_addr, u8 *eth_dst)
2780 {
2781         struct rocker *rocker = rocker_port->rocker;
2782         struct rocker_neigh_tbl_entry *entry;
2783         struct rocker_neigh_tbl_entry *found;
2784         unsigned long lock_flags;
2785         __be16 eth_type = htons(ETH_P_IP);
2786         enum rocker_of_dpa_table_id goto_tbl =
2787                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2788         u32 group_id;
2789         u32 priority = 0;
2790         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2791         bool updating;
2792         bool removing;
2793         int err = 0;
2794
2795         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2796         if (!entry)
2797                 return -ENOMEM;
2798
2799         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2800
2801         found = rocker_neigh_tbl_find(rocker, ip_addr);
2802
2803         updating = found && adding;
2804         removing = found && !adding;
2805         adding = !found && adding;
2806
2807         if (adding) {
2808                 entry->ip_addr = ip_addr;
2809                 entry->dev = rocker_port->dev;
2810                 ether_addr_copy(entry->eth_dst, eth_dst);
2811                 entry->ttl_check = true;
2812                 _rocker_neigh_add(rocker, entry);
2813         } else if (removing) {
2814                 memcpy(entry, found, sizeof(*entry));
2815                 _rocker_neigh_del(rocker, found);
2816         } else if (updating) {
2817                 _rocker_neigh_update(rocker, found, eth_dst, true);
2818                 memcpy(entry, found, sizeof(*entry));
2819         } else {
2820                 err = -ENOENT;
2821         }
2822
2823         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2824
2825         if (err)
2826                 goto err_out;
2827
2828         /* For each active neighbor, we have an L3 unicast group and
2829          * a /32 route to the neighbor, which uses the L3 unicast
2830          * group.  The L3 unicast group can also be referred to by
2831          * other routes' nexthops.
2832          */
2833
2834         err = rocker_group_l3_unicast(rocker_port, flags,
2835                                       entry->index,
2836                                       rocker_port->dev->dev_addr,
2837                                       entry->eth_dst,
2838                                       rocker_port->internal_vlan_id,
2839                                       entry->ttl_check,
2840                                       rocker_port->pport);
2841         if (err) {
2842                 netdev_err(rocker_port->dev,
2843                            "Error (%d) L3 unicast group index %d\n",
2844                            err, entry->index);
2845                 goto err_out;
2846         }
2847
2848         if (adding || removing) {
2849                 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
2850                 err = rocker_flow_tbl_ucast4_routing(rocker_port,
2851                                                      eth_type, ip_addr,
2852                                                      inet_make_mask(32),
2853                                                      priority, goto_tbl,
2854                                                      group_id, flags);
2855
2856                 if (err)
2857                         netdev_err(rocker_port->dev,
2858                                    "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
2859                                    err, &entry->ip_addr, group_id);
2860         }
2861
2862 err_out:
2863         if (!adding)
2864                 kfree(entry);
2865
2866         return err;
2867 }
2868
2869 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
2870                                     __be32 ip_addr)
2871 {
2872         struct net_device *dev = rocker_port->dev;
2873         struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
2874         int err = 0;
2875
2876         if (!n)
2877                 n = neigh_create(&arp_tbl, &ip_addr, dev);
2878         if (!n)
2879                 return -ENOMEM;
2880
2881         /* If the neigh is already resolved, then go ahead and
2882          * install the entry, otherwise start the ARP process to
2883          * resolve the neigh.
2884          */
2885
2886         if (n->nud_state & NUD_VALID)
2887                 err = rocker_port_ipv4_neigh(rocker_port, 0, ip_addr, n->ha);
2888         else
2889                 neigh_event_send(n, NULL);
2890
2891         return err;
2892 }
2893
2894 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port, int flags,
2895                                __be32 ip_addr, u32 *index)
2896 {
2897         struct rocker *rocker = rocker_port->rocker;
2898         struct rocker_neigh_tbl_entry *entry;
2899         struct rocker_neigh_tbl_entry *found;
2900         unsigned long lock_flags;
2901         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2902         bool updating;
2903         bool removing;
2904         bool resolved = true;
2905         int err = 0;
2906
2907         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2908         if (!entry)
2909                 return -ENOMEM;
2910
2911         spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2912
2913         found = rocker_neigh_tbl_find(rocker, ip_addr);
2914         if (found)
2915                 *index = found->index;
2916
2917         updating = found && adding;
2918         removing = found && !adding;
2919         adding = !found && adding;
2920
2921         if (adding) {
2922                 entry->ip_addr = ip_addr;
2923                 entry->dev = rocker_port->dev;
2924                 _rocker_neigh_add(rocker, entry);
2925                 *index = entry->index;
2926                 resolved = false;
2927         } else if (removing) {
2928                 _rocker_neigh_del(rocker, found);
2929         } else if (updating) {
2930                 _rocker_neigh_update(rocker, found, NULL, false);
2931                 resolved = !is_zero_ether_addr(found->eth_dst);
2932         } else {
2933                 err = -ENOENT;
2934         }
2935
2936         spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2937
2938         if (!adding)
2939                 kfree(entry);
2940
2941         if (err)
2942                 return err;
2943
2944         /* Resolved means neigh ip_addr is resolved to neigh mac. */
2945
2946         if (!resolved)
2947                 err = rocker_port_ipv4_resolve(rocker_port, ip_addr);
2948
2949         return err;
2950 }
2951
2952 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
2953                                         int flags, __be16 vlan_id)
2954 {
2955         struct rocker_port *p;
2956         struct rocker *rocker = rocker_port->rocker;
2957         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2958         u32 group_ids[ROCKER_FP_PORTS_MAX];
2959         u8 group_count = 0;
2960         int err;
2961         int i;
2962
2963         /* Adjust the flood group for this VLAN.  The flood group
2964          * references an L2 interface group for each port in this
2965          * VLAN.
2966          */
2967
2968         for (i = 0; i < rocker->port_count; i++) {
2969                 p = rocker->ports[i];
2970                 if (!rocker_port_is_bridged(p))
2971                         continue;
2972                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
2973                         group_ids[group_count++] =
2974                                 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
2975                 }
2976         }
2977
2978         /* If there are no bridged ports in this VLAN, we're done */
2979         if (group_count == 0)
2980                 return 0;
2981
2982         err = rocker_group_l2_flood(rocker_port, flags, vlan_id,
2983                                     group_count, group_ids,
2984                                     group_id);
2985         if (err)
2986                 netdev_err(rocker_port->dev,
2987                            "Error (%d) port VLAN l2 flood group\n", err);
2988
2989         return err;
2990 }
2991
2992 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
2993                                       int flags, __be16 vlan_id,
2994                                       bool pop_vlan)
2995 {
2996         struct rocker *rocker = rocker_port->rocker;
2997         struct rocker_port *p;
2998         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2999         u32 out_pport;
3000         int ref = 0;
3001         int err;
3002         int i;
3003
3004         /* An L2 interface group for this port in this VLAN, but
3005          * only when port STP state is LEARNING|FORWARDING.
3006          */
3007
3008         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3009             rocker_port->stp_state == BR_STATE_FORWARDING) {
3010                 out_pport = rocker_port->pport;
3011                 err = rocker_group_l2_interface(rocker_port, flags,
3012                                                 vlan_id, out_pport,
3013                                                 pop_vlan);
3014                 if (err) {
3015                         netdev_err(rocker_port->dev,
3016                                    "Error (%d) port VLAN l2 group for pport %d\n",
3017                                    err, out_pport);
3018                         return err;
3019                 }
3020         }
3021
3022         /* An L2 interface group for this VLAN to CPU port.
3023          * Add when first port joins this VLAN and destroy when
3024          * last port leaves this VLAN.
3025          */
3026
3027         for (i = 0; i < rocker->port_count; i++) {
3028                 p = rocker->ports[i];
3029                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
3030                         ref++;
3031         }
3032
3033         if ((!adding || ref != 1) && (adding || ref != 0))
3034                 return 0;
3035
3036         out_pport = 0;
3037         err = rocker_group_l2_interface(rocker_port, flags,
3038                                         vlan_id, out_pport,
3039                                         pop_vlan);
3040         if (err) {
3041                 netdev_err(rocker_port->dev,
3042                            "Error (%d) port VLAN l2 group for CPU port\n", err);
3043                 return err;
3044         }
3045
3046         return 0;
3047 }
3048
3049 static struct rocker_ctrl {
3050         const u8 *eth_dst;
3051         const u8 *eth_dst_mask;
3052         __be16 eth_type;
3053         bool acl;
3054         bool bridge;
3055         bool term;
3056         bool copy_to_cpu;
3057 } rocker_ctrls[] = {
3058         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3059                 /* pass link local multicast pkts up to CPU for filtering */
3060                 .eth_dst = ll_mac,
3061                 .eth_dst_mask = ll_mask,
3062                 .acl = true,
3063         },
3064         [ROCKER_CTRL_LOCAL_ARP] = {
3065                 /* pass local ARP pkts up to CPU */
3066                 .eth_dst = zero_mac,
3067                 .eth_dst_mask = zero_mac,
3068                 .eth_type = htons(ETH_P_ARP),
3069                 .acl = true,
3070         },
3071         [ROCKER_CTRL_IPV4_MCAST] = {
3072                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3073                 .eth_dst = ipv4_mcast,
3074                 .eth_dst_mask = ipv4_mask,
3075                 .eth_type = htons(ETH_P_IP),
3076                 .term  = true,
3077                 .copy_to_cpu = true,
3078         },
3079         [ROCKER_CTRL_IPV6_MCAST] = {
3080                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3081                 .eth_dst = ipv6_mcast,
3082                 .eth_dst_mask = ipv6_mask,
3083                 .eth_type = htons(ETH_P_IPV6),
3084                 .term  = true,
3085                 .copy_to_cpu = true,
3086         },
3087         [ROCKER_CTRL_DFLT_BRIDGING] = {
3088                 /* flood any pkts on vlan */
3089                 .bridge = true,
3090                 .copy_to_cpu = true,
3091         },
3092 };
3093
3094 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3095                                      int flags, struct rocker_ctrl *ctrl,
3096                                      __be16 vlan_id)
3097 {
3098         u32 in_pport = rocker_port->pport;
3099         u32 in_pport_mask = 0xffffffff;
3100         u32 out_pport = 0;
3101         u8 *eth_src = NULL;
3102         u8 *eth_src_mask = NULL;
3103         __be16 vlan_id_mask = htons(0xffff);
3104         u8 ip_proto = 0;
3105         u8 ip_proto_mask = 0;
3106         u8 ip_tos = 0;
3107         u8 ip_tos_mask = 0;
3108         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3109         int err;
3110
3111         err = rocker_flow_tbl_acl(rocker_port, flags,
3112                                   in_pport, in_pport_mask,
3113                                   eth_src, eth_src_mask,
3114                                   ctrl->eth_dst, ctrl->eth_dst_mask,
3115                                   ctrl->eth_type,
3116                                   vlan_id, vlan_id_mask,
3117                                   ip_proto, ip_proto_mask,
3118                                   ip_tos, ip_tos_mask,
3119                                   group_id);
3120
3121         if (err)
3122                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3123
3124         return err;
3125 }
3126
3127 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3128                                         int flags, struct rocker_ctrl *ctrl,
3129                                         __be16 vlan_id)
3130 {
3131         enum rocker_of_dpa_table_id goto_tbl =
3132                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3133         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3134         u32 tunnel_id = 0;
3135         int err;
3136
3137         if (!rocker_port_is_bridged(rocker_port))
3138                 return 0;
3139
3140         err = rocker_flow_tbl_bridge(rocker_port, flags,
3141                                      ctrl->eth_dst, ctrl->eth_dst_mask,
3142                                      vlan_id, tunnel_id,
3143                                      goto_tbl, group_id, ctrl->copy_to_cpu);
3144
3145         if (err)
3146                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3147
3148         return err;
3149 }
3150
3151 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3152                                       int flags, struct rocker_ctrl *ctrl,
3153                                       __be16 vlan_id)
3154 {
3155         u32 in_pport_mask = 0xffffffff;
3156         __be16 vlan_id_mask = htons(0xffff);
3157         int err;
3158
3159         if (ntohs(vlan_id) == 0)
3160                 vlan_id = rocker_port->internal_vlan_id;
3161
3162         err = rocker_flow_tbl_term_mac(rocker_port,
3163                                        rocker_port->pport, in_pport_mask,
3164                                        ctrl->eth_type, ctrl->eth_dst,
3165                                        ctrl->eth_dst_mask, vlan_id,
3166                                        vlan_id_mask, ctrl->copy_to_cpu,
3167                                        flags);
3168
3169         if (err)
3170                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3171
3172         return err;
3173 }
3174
3175 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, int flags,
3176                                  struct rocker_ctrl *ctrl, __be16 vlan_id)
3177 {
3178         if (ctrl->acl)
3179                 return rocker_port_ctrl_vlan_acl(rocker_port, flags,
3180                                                  ctrl, vlan_id);
3181         if (ctrl->bridge)
3182                 return rocker_port_ctrl_vlan_bridge(rocker_port, flags,
3183                                                     ctrl, vlan_id);
3184
3185         if (ctrl->term)
3186                 return rocker_port_ctrl_vlan_term(rocker_port, flags,
3187                                                   ctrl, vlan_id);
3188
3189         return -EOPNOTSUPP;
3190 }
3191
3192 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3193                                      int flags, __be16 vlan_id)
3194 {
3195         int err = 0;
3196         int i;
3197
3198         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3199                 if (rocker_port->ctrls[i]) {
3200                         err = rocker_port_ctrl_vlan(rocker_port, flags,
3201                                                     &rocker_ctrls[i], vlan_id);
3202                         if (err)
3203                                 return err;
3204                 }
3205         }
3206
3207         return err;
3208 }
3209
3210 static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags,
3211                             struct rocker_ctrl *ctrl)
3212 {
3213         u16 vid;
3214         int err = 0;
3215
3216         for (vid = 1; vid < VLAN_N_VID; vid++) {
3217                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3218                         continue;
3219                 err = rocker_port_ctrl_vlan(rocker_port, flags,
3220                                             ctrl, htons(vid));
3221                 if (err)
3222                         break;
3223         }
3224
3225         return err;
3226 }
3227
3228 static int rocker_port_vlan(struct rocker_port *rocker_port, int flags,
3229                             u16 vid)
3230 {
3231         enum rocker_of_dpa_table_id goto_tbl =
3232                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3233         u32 in_pport = rocker_port->pport;
3234         __be16 vlan_id = htons(vid);
3235         __be16 vlan_id_mask = htons(0xffff);
3236         __be16 internal_vlan_id;
3237         bool untagged;
3238         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3239         int err;
3240
3241         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3242
3243         if (adding && test_and_set_bit(ntohs(internal_vlan_id),
3244                                        rocker_port->vlan_bitmap))
3245                         return 0; /* already added */
3246         else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id),
3247                                                 rocker_port->vlan_bitmap))
3248                         return 0; /* already removed */
3249
3250         if (adding) {
3251                 err = rocker_port_ctrl_vlan_add(rocker_port, flags,
3252                                                 internal_vlan_id);
3253                 if (err) {
3254                         netdev_err(rocker_port->dev,
3255                                    "Error (%d) port ctrl vlan add\n", err);
3256                         return err;
3257                 }
3258         }
3259
3260         err = rocker_port_vlan_l2_groups(rocker_port, flags,
3261                                          internal_vlan_id, untagged);
3262         if (err) {
3263                 netdev_err(rocker_port->dev,
3264                            "Error (%d) port VLAN l2 groups\n", err);
3265                 return err;
3266         }
3267
3268         err = rocker_port_vlan_flood_group(rocker_port, flags,
3269                                            internal_vlan_id);
3270         if (err) {
3271                 netdev_err(rocker_port->dev,
3272                            "Error (%d) port VLAN l2 flood group\n", err);
3273                 return err;
3274         }
3275
3276         err = rocker_flow_tbl_vlan(rocker_port, flags,
3277                                    in_pport, vlan_id, vlan_id_mask,
3278                                    goto_tbl, untagged, internal_vlan_id);
3279         if (err)
3280                 netdev_err(rocker_port->dev,
3281                            "Error (%d) port VLAN table\n", err);
3282
3283         return err;
3284 }
3285
3286 static int rocker_port_ig_tbl(struct rocker_port *rocker_port, int flags)
3287 {
3288         enum rocker_of_dpa_table_id goto_tbl;
3289         u32 in_pport;
3290         u32 in_pport_mask;
3291         int err;
3292
3293         /* Normal Ethernet Frames.  Matches pkts from any local physical
3294          * ports.  Goto VLAN tbl.
3295          */
3296
3297         in_pport = 0;
3298         in_pport_mask = 0xffff0000;
3299         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3300
3301         err = rocker_flow_tbl_ig_port(rocker_port, flags,
3302                                       in_pport, in_pport_mask,
3303                                       goto_tbl);
3304         if (err)
3305                 netdev_err(rocker_port->dev,
3306                            "Error (%d) ingress port table entry\n", err);
3307
3308         return err;
3309 }
3310
3311 struct rocker_fdb_learn_work {
3312         struct work_struct work;
3313         struct net_device *dev;
3314         int flags;
3315         u8 addr[ETH_ALEN];
3316         u16 vid;
3317 };
3318
3319 static void rocker_port_fdb_learn_work(struct work_struct *work)
3320 {
3321         struct rocker_fdb_learn_work *lw =
3322                 container_of(work, struct rocker_fdb_learn_work, work);
3323         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3324         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3325         struct netdev_switch_notifier_fdb_info info;
3326
3327         info.addr = lw->addr;
3328         info.vid = lw->vid;
3329
3330         if (learned && removing)
3331                 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL,
3332                                              lw->dev, &info.info);
3333         else if (learned && !removing)
3334                 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_ADD,
3335                                              lw->dev, &info.info);
3336
3337         kfree(work);
3338 }
3339
3340 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3341                                  int flags, const u8 *addr, __be16 vlan_id)
3342 {
3343         struct rocker_fdb_learn_work *lw;
3344         enum rocker_of_dpa_table_id goto_tbl =
3345                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3346         u32 out_pport = rocker_port->pport;
3347         u32 tunnel_id = 0;
3348         u32 group_id = ROCKER_GROUP_NONE;
3349         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3350         bool copy_to_cpu = false;
3351         int err;
3352
3353         if (rocker_port_is_bridged(rocker_port))
3354                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3355
3356         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3357                 err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL,
3358                                              vlan_id, tunnel_id, goto_tbl,
3359                                              group_id, copy_to_cpu);
3360                 if (err)
3361                         return err;
3362         }
3363
3364         if (!syncing)
3365                 return 0;
3366
3367         if (!rocker_port_is_bridged(rocker_port))
3368                 return 0;
3369
3370         lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags));
3371         if (!lw)
3372                 return -ENOMEM;
3373
3374         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3375
3376         lw->dev = rocker_port->dev;
3377         lw->flags = flags;
3378         ether_addr_copy(lw->addr, addr);
3379         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3380
3381         schedule_work(&lw->work);
3382
3383         return 0;
3384 }
3385
3386 static struct rocker_fdb_tbl_entry *
3387 rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3388 {
3389         struct rocker_fdb_tbl_entry *found;
3390
3391         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3392                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3393                         return found;
3394
3395         return NULL;
3396 }
3397
3398 static int rocker_port_fdb(struct rocker_port *rocker_port,
3399                            const unsigned char *addr,
3400                            __be16 vlan_id, int flags)
3401 {
3402         struct rocker *rocker = rocker_port->rocker;
3403         struct rocker_fdb_tbl_entry *fdb;
3404         struct rocker_fdb_tbl_entry *found;
3405         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3406         unsigned long lock_flags;
3407
3408         fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags));
3409         if (!fdb)
3410                 return -ENOMEM;
3411
3412         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3413         fdb->key.pport = rocker_port->pport;
3414         ether_addr_copy(fdb->key.addr, addr);
3415         fdb->key.vlan_id = vlan_id;
3416         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3417
3418         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3419
3420         found = rocker_fdb_tbl_find(rocker, fdb);
3421
3422         if (removing && found) {
3423                 kfree(fdb);
3424                 hash_del(&found->entry);
3425         } else if (!removing && !found) {
3426                 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3427         }
3428
3429         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3430
3431         /* Check if adding and already exists, or removing and can't find */
3432         if (!found != !removing) {
3433                 kfree(fdb);
3434                 if (!found && removing)
3435                         return 0;
3436                 /* Refreshing existing to update aging timers */
3437                 flags |= ROCKER_OP_FLAG_REFRESH;
3438         }
3439
3440         return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id);
3441 }
3442
3443 static int rocker_port_fdb_flush(struct rocker_port *rocker_port)
3444 {
3445         struct rocker *rocker = rocker_port->rocker;
3446         struct rocker_fdb_tbl_entry *found;
3447         unsigned long lock_flags;
3448         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3449         struct hlist_node *tmp;
3450         int bkt;
3451         int err = 0;
3452
3453         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3454             rocker_port->stp_state == BR_STATE_FORWARDING)
3455                 return 0;
3456
3457         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3458
3459         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3460                 if (found->key.pport != rocker_port->pport)
3461                         continue;
3462                 if (!found->learned)
3463                         continue;
3464                 err = rocker_port_fdb_learn(rocker_port, flags,
3465                                             found->key.addr,
3466                                             found->key.vlan_id);
3467                 if (err)
3468                         goto err_out;
3469                 hash_del(&found->entry);
3470         }
3471
3472 err_out:
3473         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3474
3475         return err;
3476 }
3477
3478 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3479                                   int flags, __be16 vlan_id)
3480 {
3481         u32 in_pport_mask = 0xffffffff;
3482         __be16 eth_type;
3483         const u8 *dst_mac_mask = ff_mac;
3484         __be16 vlan_id_mask = htons(0xffff);
3485         bool copy_to_cpu = false;
3486         int err;
3487
3488         if (ntohs(vlan_id) == 0)
3489                 vlan_id = rocker_port->internal_vlan_id;
3490
3491         eth_type = htons(ETH_P_IP);
3492         err = rocker_flow_tbl_term_mac(rocker_port,
3493                                        rocker_port->pport, in_pport_mask,
3494                                        eth_type, rocker_port->dev->dev_addr,
3495                                        dst_mac_mask, vlan_id, vlan_id_mask,
3496                                        copy_to_cpu, flags);
3497         if (err)
3498                 return err;
3499
3500         eth_type = htons(ETH_P_IPV6);
3501         err = rocker_flow_tbl_term_mac(rocker_port,
3502                                        rocker_port->pport, in_pport_mask,
3503                                        eth_type, rocker_port->dev->dev_addr,
3504                                        dst_mac_mask, vlan_id, vlan_id_mask,
3505                                        copy_to_cpu, flags);
3506
3507         return err;
3508 }
3509
3510 static int rocker_port_fwding(struct rocker_port *rocker_port)
3511 {
3512         bool pop_vlan;
3513         u32 out_pport;
3514         __be16 vlan_id;
3515         u16 vid;
3516         int flags = ROCKER_OP_FLAG_NOWAIT;
3517         int err;
3518
3519         /* Port will be forwarding-enabled if its STP state is LEARNING
3520          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3521          * port STP state.  Use L2 interface group on port VLANs as a way
3522          * to toggle port forwarding: if forwarding is disabled, L2
3523          * interface group will not exist.
3524          */
3525
3526         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3527             rocker_port->stp_state != BR_STATE_FORWARDING)
3528                 flags |= ROCKER_OP_FLAG_REMOVE;
3529
3530         out_pport = rocker_port->pport;
3531         for (vid = 1; vid < VLAN_N_VID; vid++) {
3532                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3533                         continue;
3534                 vlan_id = htons(vid);
3535                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3536                 err = rocker_group_l2_interface(rocker_port, flags,
3537                                                 vlan_id, out_pport,
3538                                                 pop_vlan);
3539                 if (err) {
3540                         netdev_err(rocker_port->dev,
3541                                    "Error (%d) port VLAN l2 group for pport %d\n",
3542                                    err, out_pport);
3543                         return err;
3544                 }
3545         }
3546
3547         return 0;
3548 }
3549
3550 static int rocker_port_stp_update(struct rocker_port *rocker_port, u8 state)
3551 {
3552         bool want[ROCKER_CTRL_MAX] = { 0, };
3553         int flags;
3554         int err;
3555         int i;
3556
3557         if (rocker_port->stp_state == state)
3558                 return 0;
3559
3560         rocker_port->stp_state = state;
3561
3562         switch (state) {
3563         case BR_STATE_DISABLED:
3564                 /* port is completely disabled */
3565                 break;
3566         case BR_STATE_LISTENING:
3567         case BR_STATE_BLOCKING:
3568                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3569                 break;
3570         case BR_STATE_LEARNING:
3571         case BR_STATE_FORWARDING:
3572                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3573                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3574                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3575                 if (rocker_port_is_bridged(rocker_port))
3576                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3577                 else
3578                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3579                 break;
3580         }
3581
3582         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3583                 if (want[i] != rocker_port->ctrls[i]) {
3584                         flags = ROCKER_OP_FLAG_NOWAIT |
3585                                 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3586                         err = rocker_port_ctrl(rocker_port, flags,
3587                                                &rocker_ctrls[i]);
3588                         if (err)
3589                                 return err;
3590                         rocker_port->ctrls[i] = want[i];
3591                 }
3592         }
3593
3594         err = rocker_port_fdb_flush(rocker_port);
3595         if (err)
3596                 return err;
3597
3598         return rocker_port_fwding(rocker_port);
3599 }
3600
3601 static int rocker_port_fwd_enable(struct rocker_port *rocker_port)
3602 {
3603         if (rocker_port_is_bridged(rocker_port))
3604                 /* bridge STP will enable port */
3605                 return 0;
3606
3607         /* port is not bridged, so simulate going to FORWARDING state */
3608         return rocker_port_stp_update(rocker_port, BR_STATE_FORWARDING);
3609 }
3610
3611 static int rocker_port_fwd_disable(struct rocker_port *rocker_port)
3612 {
3613         if (rocker_port_is_bridged(rocker_port))
3614                 /* bridge STP will disable port */
3615                 return 0;
3616
3617         /* port is not bridged, so simulate going to DISABLED state */
3618         return rocker_port_stp_update(rocker_port, BR_STATE_DISABLED);
3619 }
3620
3621 static struct rocker_internal_vlan_tbl_entry *
3622 rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3623 {
3624         struct rocker_internal_vlan_tbl_entry *found;
3625
3626         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3627                                entry, ifindex) {
3628                 if (found->ifindex == ifindex)
3629                         return found;
3630         }
3631
3632         return NULL;
3633 }
3634
3635 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3636                                                int ifindex)
3637 {
3638         struct rocker *rocker = rocker_port->rocker;
3639         struct rocker_internal_vlan_tbl_entry *entry;
3640         struct rocker_internal_vlan_tbl_entry *found;
3641         unsigned long lock_flags;
3642         int i;
3643
3644         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3645         if (!entry)
3646                 return 0;
3647
3648         entry->ifindex = ifindex;
3649
3650         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3651
3652         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3653         if (found) {
3654                 kfree(entry);
3655                 goto found;
3656         }
3657
3658         found = entry;
3659         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3660
3661         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3662                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3663                         continue;
3664                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3665                 goto found;
3666         }
3667
3668         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3669
3670 found:
3671         found->ref_count++;
3672         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3673
3674         return found->vlan_id;
3675 }
3676
3677 static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3678                                              int ifindex)
3679 {
3680         struct rocker *rocker = rocker_port->rocker;
3681         struct rocker_internal_vlan_tbl_entry *found;
3682         unsigned long lock_flags;
3683         unsigned long bit;
3684
3685         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3686
3687         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3688         if (!found) {
3689                 netdev_err(rocker_port->dev,
3690                            "ifindex (%d) not found in internal VLAN tbl\n",
3691                            ifindex);
3692                 goto not_found;
3693         }
3694
3695         if (--found->ref_count <= 0) {
3696                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3697                 clear_bit(bit, rocker->internal_vlan_bitmap);
3698                 hash_del(&found->entry);
3699                 kfree(found);
3700         }
3701
3702 not_found:
3703         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3704 }
3705
3706 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port, __be32 dst,
3707                                 int dst_len, struct fib_info *fi, u32 tb_id,
3708                                 int flags)
3709 {
3710         struct fib_nh *nh;
3711         __be16 eth_type = htons(ETH_P_IP);
3712         __be32 dst_mask = inet_make_mask(dst_len);
3713         __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3714         u32 priority = fi->fib_priority;
3715         enum rocker_of_dpa_table_id goto_tbl =
3716                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3717         u32 group_id;
3718         bool nh_on_port;
3719         bool has_gw;
3720         u32 index;
3721         int err;
3722
3723         /* XXX support ECMP */
3724
3725         nh = fi->fib_nh;
3726         nh_on_port = (fi->fib_dev == rocker_port->dev);
3727         has_gw = !!nh->nh_gw;
3728
3729         if (has_gw && nh_on_port) {
3730                 err = rocker_port_ipv4_nh(rocker_port, flags,
3731                                           nh->nh_gw, &index);
3732                 if (err)
3733                         return err;
3734
3735                 group_id = ROCKER_GROUP_L3_UNICAST(index);
3736         } else {
3737                 /* Send to CPU for processing */
3738                 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3739         }
3740
3741         err = rocker_flow_tbl_ucast4_routing(rocker_port, eth_type, dst,
3742                                              dst_mask, priority, goto_tbl,
3743                                              group_id, flags);
3744         if (err)
3745                 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3746                            err, &dst);
3747
3748         return err;
3749 }
3750
3751 /*****************
3752  * Net device ops
3753  *****************/
3754
3755 static int rocker_port_open(struct net_device *dev)
3756 {
3757         struct rocker_port *rocker_port = netdev_priv(dev);
3758         int err;
3759
3760         err = rocker_port_dma_rings_init(rocker_port);
3761         if (err)
3762                 return err;
3763
3764         err = request_irq(rocker_msix_tx_vector(rocker_port),
3765                           rocker_tx_irq_handler, 0,
3766                           rocker_driver_name, rocker_port);
3767         if (err) {
3768                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3769                 goto err_request_tx_irq;
3770         }
3771
3772         err = request_irq(rocker_msix_rx_vector(rocker_port),
3773                           rocker_rx_irq_handler, 0,
3774                           rocker_driver_name, rocker_port);
3775         if (err) {
3776                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3777                 goto err_request_rx_irq;
3778         }
3779
3780         err = rocker_port_fwd_enable(rocker_port);
3781         if (err)
3782                 goto err_fwd_enable;
3783
3784         napi_enable(&rocker_port->napi_tx);
3785         napi_enable(&rocker_port->napi_rx);
3786         rocker_port_set_enable(rocker_port, true);
3787         netif_start_queue(dev);
3788         return 0;
3789
3790 err_fwd_enable:
3791         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3792 err_request_rx_irq:
3793         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3794 err_request_tx_irq:
3795         rocker_port_dma_rings_fini(rocker_port);
3796         return err;
3797 }
3798
3799 static int rocker_port_stop(struct net_device *dev)
3800 {
3801         struct rocker_port *rocker_port = netdev_priv(dev);
3802
3803         netif_stop_queue(dev);
3804         rocker_port_set_enable(rocker_port, false);
3805         napi_disable(&rocker_port->napi_rx);
3806         napi_disable(&rocker_port->napi_tx);
3807         rocker_port_fwd_disable(rocker_port);
3808         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3809         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3810         rocker_port_dma_rings_fini(rocker_port);
3811
3812         return 0;
3813 }
3814
3815 static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
3816                                        struct rocker_desc_info *desc_info)
3817 {
3818         struct rocker *rocker = rocker_port->rocker;
3819         struct pci_dev *pdev = rocker->pdev;
3820         struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
3821         struct rocker_tlv *attr;
3822         int rem;
3823
3824         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
3825         if (!attrs[ROCKER_TLV_TX_FRAGS])
3826                 return;
3827         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
3828                 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
3829                 dma_addr_t dma_handle;
3830                 size_t len;
3831
3832                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
3833                         continue;
3834                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
3835                                         attr);
3836                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
3837                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
3838                         continue;
3839                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
3840                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
3841                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
3842         }
3843 }
3844
3845 static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
3846                                        struct rocker_desc_info *desc_info,
3847                                        char *buf, size_t buf_len)
3848 {
3849         struct rocker *rocker = rocker_port->rocker;
3850         struct pci_dev *pdev = rocker->pdev;
3851         dma_addr_t dma_handle;
3852         struct rocker_tlv *frag;
3853
3854         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
3855         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
3856                 if (net_ratelimit())
3857                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
3858                 return -EIO;
3859         }
3860         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
3861         if (!frag)
3862                 goto unmap_frag;
3863         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
3864                                dma_handle))
3865                 goto nest_cancel;
3866         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
3867                                buf_len))
3868                 goto nest_cancel;
3869         rocker_tlv_nest_end(desc_info, frag);
3870         return 0;
3871
3872 nest_cancel:
3873         rocker_tlv_nest_cancel(desc_info, frag);
3874 unmap_frag:
3875         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
3876         return -EMSGSIZE;
3877 }
3878
3879 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
3880 {
3881         struct rocker_port *rocker_port = netdev_priv(dev);
3882         struct rocker *rocker = rocker_port->rocker;
3883         struct rocker_desc_info *desc_info;
3884         struct rocker_tlv *frags;
3885         int i;
3886         int err;
3887
3888         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3889         if (unlikely(!desc_info)) {
3890                 if (net_ratelimit())
3891                         netdev_err(dev, "tx ring full when queue awake\n");
3892                 return NETDEV_TX_BUSY;
3893         }
3894
3895         rocker_desc_cookie_ptr_set(desc_info, skb);
3896
3897         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
3898         if (!frags)
3899                 goto out;
3900         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3901                                           skb->data, skb_headlen(skb));
3902         if (err)
3903                 goto nest_cancel;
3904         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
3905                 goto nest_cancel;
3906
3907         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3908                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3909
3910                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3911                                                   skb_frag_address(frag),
3912                                                   skb_frag_size(frag));
3913                 if (err)
3914                         goto unmap_frags;
3915         }
3916         rocker_tlv_nest_end(desc_info, frags);
3917
3918         rocker_desc_gen_clear(desc_info);
3919         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
3920
3921         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3922         if (!desc_info)
3923                 netif_stop_queue(dev);
3924
3925         return NETDEV_TX_OK;
3926
3927 unmap_frags:
3928         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3929 nest_cancel:
3930         rocker_tlv_nest_cancel(desc_info, frags);
3931 out:
3932         dev_kfree_skb(skb);
3933         dev->stats.tx_dropped++;
3934
3935         return NETDEV_TX_OK;
3936 }
3937
3938 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
3939 {
3940         struct sockaddr *addr = p;
3941         struct rocker_port *rocker_port = netdev_priv(dev);
3942         int err;
3943
3944         if (!is_valid_ether_addr(addr->sa_data))
3945                 return -EADDRNOTAVAIL;
3946
3947         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
3948         if (err)
3949                 return err;
3950         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3951         return 0;
3952 }
3953
3954 static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
3955                                        __be16 proto, u16 vid)
3956 {
3957         struct rocker_port *rocker_port = netdev_priv(dev);
3958         int err;
3959
3960         err = rocker_port_vlan(rocker_port, 0, vid);
3961         if (err)
3962                 return err;
3963
3964         return rocker_port_router_mac(rocker_port, 0, htons(vid));
3965 }
3966
3967 static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
3968                                         __be16 proto, u16 vid)
3969 {
3970         struct rocker_port *rocker_port = netdev_priv(dev);
3971         int err;
3972
3973         err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE,
3974                                      htons(vid));
3975         if (err)
3976                 return err;
3977
3978         return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid);
3979 }
3980
3981 static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
3982                                struct net_device *dev,
3983                                const unsigned char *addr, u16 vid,
3984                                u16 nlm_flags)
3985 {
3986         struct rocker_port *rocker_port = netdev_priv(dev);
3987         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3988         int flags = 0;
3989
3990         if (!rocker_port_is_bridged(rocker_port))
3991                 return -EINVAL;
3992
3993         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3994 }
3995
3996 static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
3997                                struct net_device *dev,
3998                                const unsigned char *addr, u16 vid)
3999 {
4000         struct rocker_port *rocker_port = netdev_priv(dev);
4001         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4002         int flags = ROCKER_OP_FLAG_REMOVE;
4003
4004         if (!rocker_port_is_bridged(rocker_port))
4005                 return -EINVAL;
4006
4007         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
4008 }
4009
4010 static int rocker_fdb_fill_info(struct sk_buff *skb,
4011                                 struct rocker_port *rocker_port,
4012                                 const unsigned char *addr, u16 vid,
4013                                 u32 portid, u32 seq, int type,
4014                                 unsigned int flags)
4015 {
4016         struct nlmsghdr *nlh;
4017         struct ndmsg *ndm;
4018
4019         nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
4020         if (!nlh)
4021                 return -EMSGSIZE;
4022
4023         ndm = nlmsg_data(nlh);
4024         ndm->ndm_family  = AF_BRIDGE;
4025         ndm->ndm_pad1    = 0;
4026         ndm->ndm_pad2    = 0;
4027         ndm->ndm_flags   = NTF_SELF;
4028         ndm->ndm_type    = 0;
4029         ndm->ndm_ifindex = rocker_port->dev->ifindex;
4030         ndm->ndm_state   = NUD_REACHABLE;
4031
4032         if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
4033                 goto nla_put_failure;
4034
4035         if (vid && nla_put_u16(skb, NDA_VLAN, vid))
4036                 goto nla_put_failure;
4037
4038         nlmsg_end(skb, nlh);
4039         return 0;
4040
4041 nla_put_failure:
4042         nlmsg_cancel(skb, nlh);
4043         return -EMSGSIZE;
4044 }
4045
4046 static int rocker_port_fdb_dump(struct sk_buff *skb,
4047                                 struct netlink_callback *cb,
4048                                 struct net_device *dev,
4049                                 struct net_device *filter_dev,
4050                                 int idx)
4051 {
4052         struct rocker_port *rocker_port = netdev_priv(dev);
4053         struct rocker *rocker = rocker_port->rocker;
4054         struct rocker_fdb_tbl_entry *found;
4055         struct hlist_node *tmp;
4056         int bkt;
4057         unsigned long lock_flags;
4058         const unsigned char *addr;
4059         u16 vid;
4060         int err;
4061
4062         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4063         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4064                 if (found->key.pport != rocker_port->pport)
4065                         continue;
4066                 if (idx < cb->args[0])
4067                         goto skip;
4068                 addr = found->key.addr;
4069                 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
4070                 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
4071                                            NETLINK_CB(cb->skb).portid,
4072                                            cb->nlh->nlmsg_seq,
4073                                            RTM_NEWNEIGH, NLM_F_MULTI);
4074                 if (err < 0)
4075                         break;
4076 skip:
4077                 ++idx;
4078         }
4079         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4080         return idx;
4081 }
4082
4083 static int rocker_port_bridge_setlink(struct net_device *dev,
4084                                       struct nlmsghdr *nlh, u16 flags)
4085 {
4086         struct rocker_port *rocker_port = netdev_priv(dev);
4087         struct nlattr *protinfo;
4088         struct nlattr *attr;
4089         int err;
4090
4091         protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
4092                                    IFLA_PROTINFO);
4093         if (protinfo) {
4094                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING);
4095                 if (attr) {
4096                         if (nla_len(attr) < sizeof(u8))
4097                                 return -EINVAL;
4098
4099                         if (nla_get_u8(attr))
4100                                 rocker_port->brport_flags |= BR_LEARNING;
4101                         else
4102                                 rocker_port->brport_flags &= ~BR_LEARNING;
4103                         err = rocker_port_set_learning(rocker_port);
4104                         if (err)
4105                                 return err;
4106                 }
4107                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC);
4108                 if (attr) {
4109                         if (nla_len(attr) < sizeof(u8))
4110                                 return -EINVAL;
4111
4112                         if (nla_get_u8(attr))
4113                                 rocker_port->brport_flags |= BR_LEARNING_SYNC;
4114                         else
4115                                 rocker_port->brport_flags &= ~BR_LEARNING_SYNC;
4116                 }
4117         }
4118
4119         return 0;
4120 }
4121
4122 static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4123                                       struct net_device *dev,
4124                                       u32 filter_mask)
4125 {
4126         struct rocker_port *rocker_port = netdev_priv(dev);
4127         u16 mode = BRIDGE_MODE_UNDEF;
4128         u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
4129
4130         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
4131                                        rocker_port->brport_flags, mask);
4132 }
4133
4134 static int rocker_port_switch_parent_id_get(struct net_device *dev,
4135                                             struct netdev_phys_item_id *psid)
4136 {
4137         struct rocker_port *rocker_port = netdev_priv(dev);
4138         struct rocker *rocker = rocker_port->rocker;
4139
4140         psid->id_len = sizeof(rocker->hw.id);
4141         memcpy(&psid->id, &rocker->hw.id, psid->id_len);
4142         return 0;
4143 }
4144
4145 static int rocker_port_switch_port_stp_update(struct net_device *dev, u8 state)
4146 {
4147         struct rocker_port *rocker_port = netdev_priv(dev);
4148
4149         return rocker_port_stp_update(rocker_port, state);
4150 }
4151
4152 static int rocker_port_switch_fib_ipv4_add(struct net_device *dev,
4153                                            __be32 dst, int dst_len,
4154                                            struct fib_info *fi,
4155                                            u8 tos, u8 type,
4156                                            u32 nlflags, u32 tb_id)
4157 {
4158         struct rocker_port *rocker_port = netdev_priv(dev);
4159         int flags = 0;
4160
4161         return rocker_port_fib_ipv4(rocker_port, dst, dst_len,
4162                                     fi, tb_id, flags);
4163 }
4164
4165 static int rocker_port_switch_fib_ipv4_del(struct net_device *dev,
4166                                            __be32 dst, int dst_len,
4167                                            struct fib_info *fi,
4168                                            u8 tos, u8 type, u32 tb_id)
4169 {
4170         struct rocker_port *rocker_port = netdev_priv(dev);
4171         int flags = ROCKER_OP_FLAG_REMOVE;
4172
4173         return rocker_port_fib_ipv4(rocker_port, dst, dst_len,
4174                                     fi, tb_id, flags);
4175 }
4176
4177 static const struct net_device_ops rocker_port_netdev_ops = {
4178         .ndo_open                       = rocker_port_open,
4179         .ndo_stop                       = rocker_port_stop,
4180         .ndo_start_xmit                 = rocker_port_xmit,
4181         .ndo_set_mac_address            = rocker_port_set_mac_address,
4182         .ndo_vlan_rx_add_vid            = rocker_port_vlan_rx_add_vid,
4183         .ndo_vlan_rx_kill_vid           = rocker_port_vlan_rx_kill_vid,
4184         .ndo_fdb_add                    = rocker_port_fdb_add,
4185         .ndo_fdb_del                    = rocker_port_fdb_del,
4186         .ndo_fdb_dump                   = rocker_port_fdb_dump,
4187         .ndo_bridge_setlink             = rocker_port_bridge_setlink,
4188         .ndo_bridge_getlink             = rocker_port_bridge_getlink,
4189         .ndo_switch_parent_id_get       = rocker_port_switch_parent_id_get,
4190         .ndo_switch_port_stp_update     = rocker_port_switch_port_stp_update,
4191         .ndo_switch_fib_ipv4_add        = rocker_port_switch_fib_ipv4_add,
4192         .ndo_switch_fib_ipv4_del        = rocker_port_switch_fib_ipv4_del,
4193 };
4194
4195 /********************
4196  * ethtool interface
4197  ********************/
4198
4199 static int rocker_port_get_settings(struct net_device *dev,
4200                                     struct ethtool_cmd *ecmd)
4201 {
4202         struct rocker_port *rocker_port = netdev_priv(dev);
4203
4204         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4205 }
4206
4207 static int rocker_port_set_settings(struct net_device *dev,
4208                                     struct ethtool_cmd *ecmd)
4209 {
4210         struct rocker_port *rocker_port = netdev_priv(dev);
4211
4212         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4213 }
4214
4215 static void rocker_port_get_drvinfo(struct net_device *dev,
4216                                     struct ethtool_drvinfo *drvinfo)
4217 {
4218         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4219         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4220 }
4221
4222 static struct rocker_port_stats {
4223         char str[ETH_GSTRING_LEN];
4224         int type;
4225 } rocker_port_stats[] = {
4226         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
4227         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
4228         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4229         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
4230
4231         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
4232         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
4233         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4234         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
4235 };
4236
4237 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
4238
4239 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4240                                     u8 *data)
4241 {
4242         u8 *p = data;
4243         int i;
4244
4245         switch (stringset) {
4246         case ETH_SS_STATS:
4247                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4248                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4249                         p += ETH_GSTRING_LEN;
4250                 }
4251                 break;
4252         }
4253 }
4254
4255 static int
4256 rocker_cmd_get_port_stats_prep(struct rocker *rocker,
4257                                struct rocker_port *rocker_port,
4258                                struct rocker_desc_info *desc_info,
4259                                void *priv)
4260 {
4261         struct rocker_tlv *cmd_stats;
4262
4263         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4264                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4265                 return -EMSGSIZE;
4266
4267         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4268         if (!cmd_stats)
4269                 return -EMSGSIZE;
4270
4271         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4272                                rocker_port->pport))
4273                 return -EMSGSIZE;
4274
4275         rocker_tlv_nest_end(desc_info, cmd_stats);
4276
4277         return 0;
4278 }
4279
4280 static int
4281 rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker,
4282                                        struct rocker_port *rocker_port,
4283                                        struct rocker_desc_info *desc_info,
4284                                        void *priv)
4285 {
4286         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4287         struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4288         struct rocker_tlv *pattr;
4289         u32 pport;
4290         u64 *data = priv;
4291         int i;
4292
4293         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4294
4295         if (!attrs[ROCKER_TLV_CMD_INFO])
4296                 return -EIO;
4297
4298         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4299                                 attrs[ROCKER_TLV_CMD_INFO]);
4300
4301         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4302                 return -EIO;
4303
4304         pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4305         if (pport != rocker_port->pport)
4306                 return -EIO;
4307
4308         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4309                 pattr = stats_attrs[rocker_port_stats[i].type];
4310                 if (!pattr)
4311                         continue;
4312
4313                 data[i] = rocker_tlv_get_u64(pattr);
4314         }
4315
4316         return 0;
4317 }
4318
4319 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4320                                              void *priv)
4321 {
4322         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
4323                                rocker_cmd_get_port_stats_prep, NULL,
4324                                rocker_cmd_get_port_stats_ethtool_proc,
4325                                priv, false);
4326 }
4327
4328 static void rocker_port_get_stats(struct net_device *dev,
4329                                   struct ethtool_stats *stats, u64 *data)
4330 {
4331         struct rocker_port *rocker_port = netdev_priv(dev);
4332
4333         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4334                 int i;
4335
4336                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4337                         data[i] = 0;
4338         }
4339
4340         return;
4341 }
4342
4343 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4344 {
4345         switch (sset) {
4346         case ETH_SS_STATS:
4347                 return ROCKER_PORT_STATS_LEN;
4348         default:
4349                 return -EOPNOTSUPP;
4350         }
4351 }
4352
4353 static const struct ethtool_ops rocker_port_ethtool_ops = {
4354         .get_settings           = rocker_port_get_settings,
4355         .set_settings           = rocker_port_set_settings,
4356         .get_drvinfo            = rocker_port_get_drvinfo,
4357         .get_link               = ethtool_op_get_link,
4358         .get_strings            = rocker_port_get_strings,
4359         .get_ethtool_stats      = rocker_port_get_stats,
4360         .get_sset_count         = rocker_port_get_sset_count,
4361 };
4362
4363 /*****************
4364  * NAPI interface
4365  *****************/
4366
4367 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4368 {
4369         return container_of(napi, struct rocker_port, napi_tx);
4370 }
4371
4372 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4373 {
4374         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4375         struct rocker *rocker = rocker_port->rocker;
4376         struct rocker_desc_info *desc_info;
4377         u32 credits = 0;
4378         int err;
4379
4380         /* Cleanup tx descriptors */
4381         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4382                 struct sk_buff *skb;
4383
4384                 err = rocker_desc_err(desc_info);
4385                 if (err && net_ratelimit())
4386                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4387                                    err);
4388                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4389
4390                 skb = rocker_desc_cookie_ptr_get(desc_info);
4391                 if (err == 0) {
4392                         rocker_port->dev->stats.tx_packets++;
4393                         rocker_port->dev->stats.tx_bytes += skb->len;
4394                 } else
4395                         rocker_port->dev->stats.tx_errors++;
4396
4397                 dev_kfree_skb_any(skb);
4398                 credits++;
4399         }
4400
4401         if (credits && netif_queue_stopped(rocker_port->dev))
4402                 netif_wake_queue(rocker_port->dev);
4403
4404         napi_complete(napi);
4405         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4406
4407         return 0;
4408 }
4409
4410 static int rocker_port_rx_proc(struct rocker *rocker,
4411                                struct rocker_port *rocker_port,
4412                                struct rocker_desc_info *desc_info)
4413 {
4414         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4415         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4416         size_t rx_len;
4417
4418         if (!skb)
4419                 return -ENOENT;
4420
4421         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4422         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4423                 return -EINVAL;
4424
4425         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4426
4427         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4428         skb_put(skb, rx_len);
4429         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4430
4431         rocker_port->dev->stats.rx_packets++;
4432         rocker_port->dev->stats.rx_bytes += skb->len;
4433
4434         netif_receive_skb(skb);
4435
4436         return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
4437 }
4438
4439 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4440 {
4441         return container_of(napi, struct rocker_port, napi_rx);
4442 }
4443
4444 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4445 {
4446         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4447         struct rocker *rocker = rocker_port->rocker;
4448         struct rocker_desc_info *desc_info;
4449         u32 credits = 0;
4450         int err;
4451
4452         /* Process rx descriptors */
4453         while (credits < budget &&
4454                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4455                 err = rocker_desc_err(desc_info);
4456                 if (err) {
4457                         if (net_ratelimit())
4458                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4459                                            err);
4460                 } else {
4461                         err = rocker_port_rx_proc(rocker, rocker_port,
4462                                                   desc_info);
4463                         if (err && net_ratelimit())
4464                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4465                                            err);
4466                 }
4467                 if (err)
4468                         rocker_port->dev->stats.rx_errors++;
4469
4470                 rocker_desc_gen_clear(desc_info);
4471                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4472                 credits++;
4473         }
4474
4475         if (credits < budget)
4476                 napi_complete(napi);
4477
4478         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4479
4480         return credits;
4481 }
4482
4483 /*****************
4484  * PCI driver ops
4485  *****************/
4486
4487 static void rocker_carrier_init(struct rocker_port *rocker_port)
4488 {
4489         struct rocker *rocker = rocker_port->rocker;
4490         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4491         bool link_up;
4492
4493         link_up = link_status & (1 << rocker_port->pport);
4494         if (link_up)
4495                 netif_carrier_on(rocker_port->dev);
4496         else
4497                 netif_carrier_off(rocker_port->dev);
4498 }
4499
4500 static void rocker_remove_ports(struct rocker *rocker)
4501 {
4502         struct rocker_port *rocker_port;
4503         int i;
4504
4505         for (i = 0; i < rocker->port_count; i++) {
4506                 rocker_port = rocker->ports[i];
4507                 rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE);
4508                 unregister_netdev(rocker_port->dev);
4509         }
4510         kfree(rocker->ports);
4511 }
4512
4513 static void rocker_port_dev_addr_init(struct rocker *rocker,
4514                                       struct rocker_port *rocker_port)
4515 {
4516         struct pci_dev *pdev = rocker->pdev;
4517         int err;
4518
4519         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4520                                                    rocker_port->dev->dev_addr);
4521         if (err) {
4522                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4523                 eth_hw_addr_random(rocker_port->dev);
4524         }
4525 }
4526
4527 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4528 {
4529         struct pci_dev *pdev = rocker->pdev;
4530         struct rocker_port *rocker_port;
4531         struct net_device *dev;
4532         int err;
4533
4534         dev = alloc_etherdev(sizeof(struct rocker_port));
4535         if (!dev)
4536                 return -ENOMEM;
4537         rocker_port = netdev_priv(dev);
4538         rocker_port->dev = dev;
4539         rocker_port->rocker = rocker;
4540         rocker_port->port_number = port_number;
4541         rocker_port->pport = port_number + 1;
4542         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4543
4544         rocker_port_dev_addr_init(rocker, rocker_port);
4545         dev->netdev_ops = &rocker_port_netdev_ops;
4546         dev->ethtool_ops = &rocker_port_ethtool_ops;
4547         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4548                        NAPI_POLL_WEIGHT);
4549         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4550                        NAPI_POLL_WEIGHT);
4551         rocker_carrier_init(rocker_port);
4552
4553         dev->features |= NETIF_F_NETNS_LOCAL |
4554                          NETIF_F_HW_VLAN_CTAG_FILTER |
4555                          NETIF_F_HW_SWITCH_OFFLOAD;
4556
4557         err = register_netdev(dev);
4558         if (err) {
4559                 dev_err(&pdev->dev, "register_netdev failed\n");
4560                 goto err_register_netdev;
4561         }
4562         rocker->ports[port_number] = rocker_port;
4563
4564         rocker_port_set_learning(rocker_port);
4565
4566         rocker_port->internal_vlan_id =
4567                 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4568         err = rocker_port_ig_tbl(rocker_port, 0);
4569         if (err) {
4570                 dev_err(&pdev->dev, "install ig port table failed\n");
4571                 goto err_port_ig_tbl;
4572         }
4573
4574         return 0;
4575
4576 err_port_ig_tbl:
4577         unregister_netdev(dev);
4578 err_register_netdev:
4579         free_netdev(dev);
4580         return err;
4581 }
4582
4583 static int rocker_probe_ports(struct rocker *rocker)
4584 {
4585         int i;
4586         size_t alloc_size;
4587         int err;
4588
4589         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4590         rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
4591         if (!rocker->ports)
4592                 return -ENOMEM;
4593         for (i = 0; i < rocker->port_count; i++) {
4594                 err = rocker_probe_port(rocker, i);
4595                 if (err)
4596                         goto remove_ports;
4597         }
4598         return 0;
4599
4600 remove_ports:
4601         rocker_remove_ports(rocker);
4602         return err;
4603 }
4604
4605 static int rocker_msix_init(struct rocker *rocker)
4606 {
4607         struct pci_dev *pdev = rocker->pdev;
4608         int msix_entries;
4609         int i;
4610         int err;
4611
4612         msix_entries = pci_msix_vec_count(pdev);
4613         if (msix_entries < 0)
4614                 return msix_entries;
4615
4616         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4617                 return -EINVAL;
4618
4619         rocker->msix_entries = kmalloc_array(msix_entries,
4620                                              sizeof(struct msix_entry),
4621                                              GFP_KERNEL);
4622         if (!rocker->msix_entries)
4623                 return -ENOMEM;
4624
4625         for (i = 0; i < msix_entries; i++)
4626                 rocker->msix_entries[i].entry = i;
4627
4628         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4629         if (err < 0)
4630                 goto err_enable_msix;
4631
4632         return 0;
4633
4634 err_enable_msix:
4635         kfree(rocker->msix_entries);
4636         return err;
4637 }
4638
4639 static void rocker_msix_fini(struct rocker *rocker)
4640 {
4641         pci_disable_msix(rocker->pdev);
4642         kfree(rocker->msix_entries);
4643 }
4644
4645 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4646 {
4647         struct rocker *rocker;
4648         int err;
4649
4650         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4651         if (!rocker)
4652                 return -ENOMEM;
4653
4654         err = pci_enable_device(pdev);
4655         if (err) {
4656                 dev_err(&pdev->dev, "pci_enable_device failed\n");
4657                 goto err_pci_enable_device;
4658         }
4659
4660         err = pci_request_regions(pdev, rocker_driver_name);
4661         if (err) {
4662                 dev_err(&pdev->dev, "pci_request_regions failed\n");
4663                 goto err_pci_request_regions;
4664         }
4665
4666         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4667         if (!err) {
4668                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4669                 if (err) {
4670                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4671                         goto err_pci_set_dma_mask;
4672                 }
4673         } else {
4674                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4675                 if (err) {
4676                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
4677                         goto err_pci_set_dma_mask;
4678                 }
4679         }
4680
4681         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
4682                 dev_err(&pdev->dev, "invalid PCI region size\n");
4683                 goto err_pci_resource_len_check;
4684         }
4685
4686         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
4687                                   pci_resource_len(pdev, 0));
4688         if (!rocker->hw_addr) {
4689                 dev_err(&pdev->dev, "ioremap failed\n");
4690                 err = -EIO;
4691                 goto err_ioremap;
4692         }
4693         pci_set_master(pdev);
4694
4695         rocker->pdev = pdev;
4696         pci_set_drvdata(pdev, rocker);
4697
4698         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
4699
4700         err = rocker_msix_init(rocker);
4701         if (err) {
4702                 dev_err(&pdev->dev, "MSI-X init failed\n");
4703                 goto err_msix_init;
4704         }
4705
4706         err = rocker_basic_hw_test(rocker);
4707         if (err) {
4708                 dev_err(&pdev->dev, "basic hw test failed\n");
4709                 goto err_basic_hw_test;
4710         }
4711
4712         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4713
4714         err = rocker_dma_rings_init(rocker);
4715         if (err)
4716                 goto err_dma_rings_init;
4717
4718         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
4719                           rocker_cmd_irq_handler, 0,
4720                           rocker_driver_name, rocker);
4721         if (err) {
4722                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
4723                 goto err_request_cmd_irq;
4724         }
4725
4726         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
4727                           rocker_event_irq_handler, 0,
4728                           rocker_driver_name, rocker);
4729         if (err) {
4730                 dev_err(&pdev->dev, "cannot assign event irq\n");
4731                 goto err_request_event_irq;
4732         }
4733
4734         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
4735
4736         err = rocker_init_tbls(rocker);
4737         if (err) {
4738                 dev_err(&pdev->dev, "cannot init rocker tables\n");
4739                 goto err_init_tbls;
4740         }
4741
4742         err = rocker_probe_ports(rocker);
4743         if (err) {
4744                 dev_err(&pdev->dev, "failed to probe ports\n");
4745                 goto err_probe_ports;
4746         }
4747
4748         dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
4749
4750         return 0;
4751
4752 err_probe_ports:
4753         rocker_free_tbls(rocker);
4754 err_init_tbls:
4755         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4756 err_request_event_irq:
4757         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4758 err_request_cmd_irq:
4759         rocker_dma_rings_fini(rocker);
4760 err_dma_rings_init:
4761 err_basic_hw_test:
4762         rocker_msix_fini(rocker);
4763 err_msix_init:
4764         iounmap(rocker->hw_addr);
4765 err_ioremap:
4766 err_pci_resource_len_check:
4767 err_pci_set_dma_mask:
4768         pci_release_regions(pdev);
4769 err_pci_request_regions:
4770         pci_disable_device(pdev);
4771 err_pci_enable_device:
4772         kfree(rocker);
4773         return err;
4774 }
4775
4776 static void rocker_remove(struct pci_dev *pdev)
4777 {
4778         struct rocker *rocker = pci_get_drvdata(pdev);
4779
4780         rocker_free_tbls(rocker);
4781         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4782         rocker_remove_ports(rocker);
4783         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4784         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4785         rocker_dma_rings_fini(rocker);
4786         rocker_msix_fini(rocker);
4787         iounmap(rocker->hw_addr);
4788         pci_release_regions(rocker->pdev);
4789         pci_disable_device(rocker->pdev);
4790         kfree(rocker);
4791 }
4792
4793 static struct pci_driver rocker_pci_driver = {
4794         .name           = rocker_driver_name,
4795         .id_table       = rocker_pci_id_table,
4796         .probe          = rocker_probe,
4797         .remove         = rocker_remove,
4798 };
4799
4800 /************************************
4801  * Net device notifier event handler
4802  ************************************/
4803
4804 static bool rocker_port_dev_check(struct net_device *dev)
4805 {
4806         return dev->netdev_ops == &rocker_port_netdev_ops;
4807 }
4808
4809 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
4810                                    struct net_device *bridge)
4811 {
4812         int err;
4813
4814         rocker_port_internal_vlan_id_put(rocker_port,
4815                                          rocker_port->dev->ifindex);
4816
4817         rocker_port->bridge_dev = bridge;
4818
4819         /* Use bridge internal VLAN ID for untagged pkts */
4820         err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4821         if (err)
4822                 return err;
4823         rocker_port->internal_vlan_id =
4824                 rocker_port_internal_vlan_id_get(rocker_port,
4825                                                  bridge->ifindex);
4826         return rocker_port_vlan(rocker_port, 0, 0);
4827 }
4828
4829 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
4830 {
4831         int err;
4832
4833         rocker_port_internal_vlan_id_put(rocker_port,
4834                                          rocker_port->bridge_dev->ifindex);
4835
4836         rocker_port->bridge_dev = NULL;
4837
4838         /* Use port internal VLAN ID for untagged pkts */
4839         err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4840         if (err)
4841                 return err;
4842         rocker_port->internal_vlan_id =
4843                 rocker_port_internal_vlan_id_get(rocker_port,
4844                                                  rocker_port->dev->ifindex);
4845         err = rocker_port_vlan(rocker_port, 0, 0);
4846         if (err)
4847                 return err;
4848
4849         if (rocker_port->dev->flags & IFF_UP)
4850                 err = rocker_port_fwd_enable(rocker_port);
4851
4852         return err;
4853 }
4854
4855 static int rocker_port_master_changed(struct net_device *dev)
4856 {
4857         struct rocker_port *rocker_port = netdev_priv(dev);
4858         struct net_device *master = netdev_master_upper_dev_get(dev);
4859         int err = 0;
4860
4861         if (master && master->rtnl_link_ops &&
4862             !strcmp(master->rtnl_link_ops->kind, "bridge"))
4863                 err = rocker_port_bridge_join(rocker_port, master);
4864         else
4865                 err = rocker_port_bridge_leave(rocker_port);
4866
4867         return err;
4868 }
4869
4870 static int rocker_netdevice_event(struct notifier_block *unused,
4871                                   unsigned long event, void *ptr)
4872 {
4873         struct net_device *dev;
4874         int err;
4875
4876         switch (event) {
4877         case NETDEV_CHANGEUPPER:
4878                 dev = netdev_notifier_info_to_dev(ptr);
4879                 if (!rocker_port_dev_check(dev))
4880                         return NOTIFY_DONE;
4881                 err = rocker_port_master_changed(dev);
4882                 if (err)
4883                         netdev_warn(dev,
4884                                     "failed to reflect master change (err %d)\n",
4885                                     err);
4886                 break;
4887         }
4888
4889         return NOTIFY_DONE;
4890 }
4891
4892 static struct notifier_block rocker_netdevice_nb __read_mostly = {
4893         .notifier_call = rocker_netdevice_event,
4894 };
4895
4896 /************************************
4897  * Net event notifier event handler
4898  ************************************/
4899
4900 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
4901 {
4902         struct rocker_port *rocker_port = netdev_priv(dev);
4903         int flags = (n->nud_state & NUD_VALID) ? 0 : ROCKER_OP_FLAG_REMOVE;
4904         __be32 ip_addr = *(__be32 *)n->primary_key;
4905
4906         return rocker_port_ipv4_neigh(rocker_port, flags, ip_addr, n->ha);
4907 }
4908
4909 static int rocker_netevent_event(struct notifier_block *unused,
4910                                  unsigned long event, void *ptr)
4911 {
4912         struct net_device *dev;
4913         struct neighbour *n = ptr;
4914         int err;
4915
4916         switch (event) {
4917         case NETEVENT_NEIGH_UPDATE:
4918                 if (n->tbl != &arp_tbl)
4919                         return NOTIFY_DONE;
4920                 dev = n->dev;
4921                 if (!rocker_port_dev_check(dev))
4922                         return NOTIFY_DONE;
4923                 err = rocker_neigh_update(dev, n);
4924                 if (err)
4925                         netdev_warn(dev,
4926                                     "failed to handle neigh update (err %d)\n",
4927                                     err);
4928                 break;
4929         }
4930
4931         return NOTIFY_DONE;
4932 }
4933
4934 static struct notifier_block rocker_netevent_nb __read_mostly = {
4935         .notifier_call = rocker_netevent_event,
4936 };
4937
4938 /***********************
4939  * Module init and exit
4940  ***********************/
4941
4942 static int __init rocker_module_init(void)
4943 {
4944         int err;
4945
4946         register_netdevice_notifier(&rocker_netdevice_nb);
4947         register_netevent_notifier(&rocker_netevent_nb);
4948         err = pci_register_driver(&rocker_pci_driver);
4949         if (err)
4950                 goto err_pci_register_driver;
4951         return 0;
4952
4953 err_pci_register_driver:
4954         unregister_netdevice_notifier(&rocker_netevent_nb);
4955         unregister_netdevice_notifier(&rocker_netdevice_nb);
4956         return err;
4957 }
4958
4959 static void __exit rocker_module_exit(void)
4960 {
4961         unregister_netevent_notifier(&rocker_netevent_nb);
4962         unregister_netdevice_notifier(&rocker_netdevice_nb);
4963         pci_unregister_driver(&rocker_pci_driver);
4964 }
4965
4966 module_init(rocker_module_init);
4967 module_exit(rocker_module_exit);
4968
4969 MODULE_LICENSE("GPL v2");
4970 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
4971 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
4972 MODULE_DESCRIPTION("Rocker switch device driver");
4973 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);