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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[mirror_ubuntu-bionic-kernel.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 <linux/ctype.h>
34 #include <net/switchdev.h>
35 #include <net/rtnetlink.h>
36 #include <net/ip_fib.h>
37 #include <net/netevent.h>
38 #include <net/arp.h>
39 #include <asm-generic/io-64-nonatomic-lo-hi.h>
40 #include <generated/utsrelease.h>
41
42 #include "rocker.h"
43
44 static const char rocker_driver_name[] = "rocker";
45
46 static const struct pci_device_id rocker_pci_id_table[] = {
47 {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
48 {0, }
49 };
50
51 struct rocker_flow_tbl_key {
52 u32 priority;
53 enum rocker_of_dpa_table_id tbl_id;
54 union {
55 struct {
56 u32 in_pport;
57 u32 in_pport_mask;
58 enum rocker_of_dpa_table_id goto_tbl;
59 } ig_port;
60 struct {
61 u32 in_pport;
62 __be16 vlan_id;
63 __be16 vlan_id_mask;
64 enum rocker_of_dpa_table_id goto_tbl;
65 bool untagged;
66 __be16 new_vlan_id;
67 } vlan;
68 struct {
69 u32 in_pport;
70 u32 in_pport_mask;
71 __be16 eth_type;
72 u8 eth_dst[ETH_ALEN];
73 u8 eth_dst_mask[ETH_ALEN];
74 __be16 vlan_id;
75 __be16 vlan_id_mask;
76 enum rocker_of_dpa_table_id goto_tbl;
77 bool copy_to_cpu;
78 } term_mac;
79 struct {
80 __be16 eth_type;
81 __be32 dst4;
82 __be32 dst4_mask;
83 enum rocker_of_dpa_table_id goto_tbl;
84 u32 group_id;
85 } ucast_routing;
86 struct {
87 u8 eth_dst[ETH_ALEN];
88 u8 eth_dst_mask[ETH_ALEN];
89 int has_eth_dst;
90 int has_eth_dst_mask;
91 __be16 vlan_id;
92 u32 tunnel_id;
93 enum rocker_of_dpa_table_id goto_tbl;
94 u32 group_id;
95 bool copy_to_cpu;
96 } bridge;
97 struct {
98 u32 in_pport;
99 u32 in_pport_mask;
100 u8 eth_src[ETH_ALEN];
101 u8 eth_src_mask[ETH_ALEN];
102 u8 eth_dst[ETH_ALEN];
103 u8 eth_dst_mask[ETH_ALEN];
104 __be16 eth_type;
105 __be16 vlan_id;
106 __be16 vlan_id_mask;
107 u8 ip_proto;
108 u8 ip_proto_mask;
109 u8 ip_tos;
110 u8 ip_tos_mask;
111 u32 group_id;
112 } acl;
113 };
114 };
115
116 struct rocker_flow_tbl_entry {
117 struct hlist_node entry;
118 u32 cmd;
119 u64 cookie;
120 struct rocker_flow_tbl_key key;
121 size_t key_len;
122 u32 key_crc32; /* key */
123 };
124
125 struct rocker_group_tbl_entry {
126 struct hlist_node entry;
127 u32 cmd;
128 u32 group_id; /* key */
129 u16 group_count;
130 u32 *group_ids;
131 union {
132 struct {
133 u8 pop_vlan;
134 } l2_interface;
135 struct {
136 u8 eth_src[ETH_ALEN];
137 u8 eth_dst[ETH_ALEN];
138 __be16 vlan_id;
139 u32 group_id;
140 } l2_rewrite;
141 struct {
142 u8 eth_src[ETH_ALEN];
143 u8 eth_dst[ETH_ALEN];
144 __be16 vlan_id;
145 bool ttl_check;
146 u32 group_id;
147 } l3_unicast;
148 };
149 };
150
151 struct rocker_fdb_tbl_entry {
152 struct hlist_node entry;
153 u32 key_crc32; /* key */
154 bool learned;
155 struct rocker_fdb_tbl_key {
156 u32 pport;
157 u8 addr[ETH_ALEN];
158 __be16 vlan_id;
159 } key;
160 };
161
162 struct rocker_internal_vlan_tbl_entry {
163 struct hlist_node entry;
164 int ifindex; /* key */
165 u32 ref_count;
166 __be16 vlan_id;
167 };
168
169 struct rocker_neigh_tbl_entry {
170 struct hlist_node entry;
171 __be32 ip_addr; /* key */
172 struct net_device *dev;
173 u32 ref_count;
174 u32 index;
175 u8 eth_dst[ETH_ALEN];
176 bool ttl_check;
177 };
178
179 struct rocker_desc_info {
180 char *data; /* mapped */
181 size_t data_size;
182 size_t tlv_size;
183 struct rocker_desc *desc;
184 dma_addr_t mapaddr;
185 };
186
187 struct rocker_dma_ring_info {
188 size_t size;
189 u32 head;
190 u32 tail;
191 struct rocker_desc *desc; /* mapped */
192 dma_addr_t mapaddr;
193 struct rocker_desc_info *desc_info;
194 unsigned int type;
195 };
196
197 struct rocker;
198
199 enum {
200 ROCKER_CTRL_LINK_LOCAL_MCAST,
201 ROCKER_CTRL_LOCAL_ARP,
202 ROCKER_CTRL_IPV4_MCAST,
203 ROCKER_CTRL_IPV6_MCAST,
204 ROCKER_CTRL_DFLT_BRIDGING,
205 ROCKER_CTRL_DFLT_OVS,
206 ROCKER_CTRL_MAX,
207 };
208
209 #define ROCKER_INTERNAL_VLAN_ID_BASE 0x0f00
210 #define ROCKER_N_INTERNAL_VLANS 255
211 #define ROCKER_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
212 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
213
214 struct rocker_port {
215 struct net_device *dev;
216 struct net_device *bridge_dev;
217 struct rocker *rocker;
218 unsigned int port_number;
219 u32 pport;
220 __be16 internal_vlan_id;
221 int stp_state;
222 u32 brport_flags;
223 bool ctrls[ROCKER_CTRL_MAX];
224 unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
225 struct napi_struct napi_tx;
226 struct napi_struct napi_rx;
227 struct rocker_dma_ring_info tx_ring;
228 struct rocker_dma_ring_info rx_ring;
229 struct list_head trans_mem;
230 };
231
232 struct rocker {
233 struct pci_dev *pdev;
234 u8 __iomem *hw_addr;
235 struct msix_entry *msix_entries;
236 unsigned int port_count;
237 struct rocker_port **ports;
238 struct {
239 u64 id;
240 } hw;
241 spinlock_t cmd_ring_lock; /* for cmd ring accesses */
242 struct rocker_dma_ring_info cmd_ring;
243 struct rocker_dma_ring_info event_ring;
244 DECLARE_HASHTABLE(flow_tbl, 16);
245 spinlock_t flow_tbl_lock; /* for flow tbl accesses */
246 u64 flow_tbl_next_cookie;
247 DECLARE_HASHTABLE(group_tbl, 16);
248 spinlock_t group_tbl_lock; /* for group tbl accesses */
249 DECLARE_HASHTABLE(fdb_tbl, 16);
250 spinlock_t fdb_tbl_lock; /* for fdb tbl accesses */
251 unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
252 DECLARE_HASHTABLE(internal_vlan_tbl, 8);
253 spinlock_t internal_vlan_tbl_lock; /* for vlan tbl accesses */
254 DECLARE_HASHTABLE(neigh_tbl, 16);
255 spinlock_t neigh_tbl_lock; /* for neigh tbl accesses */
256 u32 neigh_tbl_next_index;
257 };
258
259 static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
260 static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
261 static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
262 static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
263 static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
264 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
265 static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
266 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
267 static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
268
269 /* Rocker priority levels for flow table entries. Higher
270 * priority match takes precedence over lower priority match.
271 */
272
273 enum {
274 ROCKER_PRIORITY_UNKNOWN = 0,
275 ROCKER_PRIORITY_IG_PORT = 1,
276 ROCKER_PRIORITY_VLAN = 1,
277 ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
278 ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
279 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
280 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
281 ROCKER_PRIORITY_BRIDGING_VLAN = 3,
282 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
283 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
284 ROCKER_PRIORITY_BRIDGING_TENANT = 3,
285 ROCKER_PRIORITY_ACL_CTRL = 3,
286 ROCKER_PRIORITY_ACL_NORMAL = 2,
287 ROCKER_PRIORITY_ACL_DFLT = 1,
288 };
289
290 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
291 {
292 u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
293 u16 end = 0xffe;
294 u16 _vlan_id = ntohs(vlan_id);
295
296 return (_vlan_id >= start && _vlan_id <= end);
297 }
298
299 static __be16 rocker_port_vid_to_vlan(const struct rocker_port *rocker_port,
300 u16 vid, bool *pop_vlan)
301 {
302 __be16 vlan_id;
303
304 if (pop_vlan)
305 *pop_vlan = false;
306 vlan_id = htons(vid);
307 if (!vlan_id) {
308 vlan_id = rocker_port->internal_vlan_id;
309 if (pop_vlan)
310 *pop_vlan = true;
311 }
312
313 return vlan_id;
314 }
315
316 static u16 rocker_port_vlan_to_vid(const struct rocker_port *rocker_port,
317 __be16 vlan_id)
318 {
319 if (rocker_vlan_id_is_internal(vlan_id))
320 return 0;
321
322 return ntohs(vlan_id);
323 }
324
325 static bool rocker_port_is_bridged(const struct rocker_port *rocker_port)
326 {
327 return rocker_port->bridge_dev &&
328 netif_is_bridge_master(rocker_port->bridge_dev);
329 }
330
331 static bool rocker_port_is_ovsed(const struct rocker_port *rocker_port)
332 {
333 return rocker_port->bridge_dev &&
334 netif_is_ovs_master(rocker_port->bridge_dev);
335 }
336
337 #define ROCKER_OP_FLAG_REMOVE BIT(0)
338 #define ROCKER_OP_FLAG_NOWAIT BIT(1)
339 #define ROCKER_OP_FLAG_LEARNED BIT(2)
340 #define ROCKER_OP_FLAG_REFRESH BIT(3)
341
342 static void *__rocker_port_mem_alloc(struct rocker_port *rocker_port,
343 enum switchdev_trans trans, int flags,
344 size_t size)
345 {
346 struct list_head *elem = NULL;
347 gfp_t gfp_flags = (flags & ROCKER_OP_FLAG_NOWAIT) ?
348 GFP_ATOMIC : GFP_KERNEL;
349
350 /* If in transaction prepare phase, allocate the memory
351 * and enqueue it on a per-port list. If in transaction
352 * commit phase, dequeue the memory from the per-port list
353 * rather than re-allocating the memory. The idea is the
354 * driver code paths for prepare and commit are identical
355 * so the memory allocated in the prepare phase is the
356 * memory used in the commit phase.
357 */
358
359 switch (trans) {
360 case SWITCHDEV_TRANS_PREPARE:
361 elem = kzalloc(size + sizeof(*elem), gfp_flags);
362 if (!elem)
363 return NULL;
364 list_add_tail(elem, &rocker_port->trans_mem);
365 break;
366 case SWITCHDEV_TRANS_COMMIT:
367 BUG_ON(list_empty(&rocker_port->trans_mem));
368 elem = rocker_port->trans_mem.next;
369 list_del_init(elem);
370 break;
371 case SWITCHDEV_TRANS_NONE:
372 elem = kzalloc(size + sizeof(*elem), gfp_flags);
373 if (elem)
374 INIT_LIST_HEAD(elem);
375 break;
376 default:
377 break;
378 }
379
380 return elem ? elem + 1 : NULL;
381 }
382
383 static void *rocker_port_kzalloc(struct rocker_port *rocker_port,
384 enum switchdev_trans trans, int flags,
385 size_t size)
386 {
387 return __rocker_port_mem_alloc(rocker_port, trans, flags, size);
388 }
389
390 static void *rocker_port_kcalloc(struct rocker_port *rocker_port,
391 enum switchdev_trans trans, int flags,
392 size_t n, size_t size)
393 {
394 return __rocker_port_mem_alloc(rocker_port, trans, flags, n * size);
395 }
396
397 static void rocker_port_kfree(enum switchdev_trans trans, const void *mem)
398 {
399 struct list_head *elem;
400
401 /* Frees are ignored if in transaction prepare phase. The
402 * memory remains on the per-port list until freed in the
403 * commit phase.
404 */
405
406 if (trans == SWITCHDEV_TRANS_PREPARE)
407 return;
408
409 elem = (struct list_head *)mem - 1;
410 BUG_ON(!list_empty(elem));
411 kfree(elem);
412 }
413
414 struct rocker_wait {
415 wait_queue_head_t wait;
416 bool done;
417 bool nowait;
418 };
419
420 static void rocker_wait_reset(struct rocker_wait *wait)
421 {
422 wait->done = false;
423 wait->nowait = false;
424 }
425
426 static void rocker_wait_init(struct rocker_wait *wait)
427 {
428 init_waitqueue_head(&wait->wait);
429 rocker_wait_reset(wait);
430 }
431
432 static struct rocker_wait *rocker_wait_create(struct rocker_port *rocker_port,
433 enum switchdev_trans trans,
434 int flags)
435 {
436 struct rocker_wait *wait;
437
438 wait = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*wait));
439 if (!wait)
440 return NULL;
441 rocker_wait_init(wait);
442 return wait;
443 }
444
445 static void rocker_wait_destroy(enum switchdev_trans trans,
446 struct rocker_wait *wait)
447 {
448 rocker_port_kfree(trans, wait);
449 }
450
451 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
452 unsigned long timeout)
453 {
454 wait_event_timeout(wait->wait, wait->done, HZ / 10);
455 if (!wait->done)
456 return false;
457 return true;
458 }
459
460 static void rocker_wait_wake_up(struct rocker_wait *wait)
461 {
462 wait->done = true;
463 wake_up(&wait->wait);
464 }
465
466 static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
467 {
468 return rocker->msix_entries[vector].vector;
469 }
470
471 static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
472 {
473 return rocker_msix_vector(rocker_port->rocker,
474 ROCKER_MSIX_VEC_TX(rocker_port->port_number));
475 }
476
477 static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
478 {
479 return rocker_msix_vector(rocker_port->rocker,
480 ROCKER_MSIX_VEC_RX(rocker_port->port_number));
481 }
482
483 #define rocker_write32(rocker, reg, val) \
484 writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
485 #define rocker_read32(rocker, reg) \
486 readl((rocker)->hw_addr + (ROCKER_ ## reg))
487 #define rocker_write64(rocker, reg, val) \
488 writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
489 #define rocker_read64(rocker, reg) \
490 readq((rocker)->hw_addr + (ROCKER_ ## reg))
491
492 /*****************************
493 * HW basic testing functions
494 *****************************/
495
496 static int rocker_reg_test(const struct rocker *rocker)
497 {
498 const struct pci_dev *pdev = rocker->pdev;
499 u64 test_reg;
500 u64 rnd;
501
502 rnd = prandom_u32();
503 rnd >>= 1;
504 rocker_write32(rocker, TEST_REG, rnd);
505 test_reg = rocker_read32(rocker, TEST_REG);
506 if (test_reg != rnd * 2) {
507 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
508 test_reg, rnd * 2);
509 return -EIO;
510 }
511
512 rnd = prandom_u32();
513 rnd <<= 31;
514 rnd |= prandom_u32();
515 rocker_write64(rocker, TEST_REG64, rnd);
516 test_reg = rocker_read64(rocker, TEST_REG64);
517 if (test_reg != rnd * 2) {
518 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
519 test_reg, rnd * 2);
520 return -EIO;
521 }
522
523 return 0;
524 }
525
526 static int rocker_dma_test_one(const struct rocker *rocker,
527 struct rocker_wait *wait, u32 test_type,
528 dma_addr_t dma_handle, const unsigned char *buf,
529 const unsigned char *expect, size_t size)
530 {
531 const struct pci_dev *pdev = rocker->pdev;
532 int i;
533
534 rocker_wait_reset(wait);
535 rocker_write32(rocker, TEST_DMA_CTRL, test_type);
536
537 if (!rocker_wait_event_timeout(wait, HZ / 10)) {
538 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
539 return -EIO;
540 }
541
542 for (i = 0; i < size; i++) {
543 if (buf[i] != expect[i]) {
544 dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
545 buf[i], i, expect[i]);
546 return -EIO;
547 }
548 }
549 return 0;
550 }
551
552 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
553 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
554
555 static int rocker_dma_test_offset(const struct rocker *rocker,
556 struct rocker_wait *wait, int offset)
557 {
558 struct pci_dev *pdev = rocker->pdev;
559 unsigned char *alloc;
560 unsigned char *buf;
561 unsigned char *expect;
562 dma_addr_t dma_handle;
563 int i;
564 int err;
565
566 alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
567 GFP_KERNEL | GFP_DMA);
568 if (!alloc)
569 return -ENOMEM;
570 buf = alloc + offset;
571 expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
572
573 dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
574 PCI_DMA_BIDIRECTIONAL);
575 if (pci_dma_mapping_error(pdev, dma_handle)) {
576 err = -EIO;
577 goto free_alloc;
578 }
579
580 rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
581 rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
582
583 memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
584 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
585 dma_handle, buf, expect,
586 ROCKER_TEST_DMA_BUF_SIZE);
587 if (err)
588 goto unmap;
589
590 memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
591 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
592 dma_handle, buf, expect,
593 ROCKER_TEST_DMA_BUF_SIZE);
594 if (err)
595 goto unmap;
596
597 prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
598 for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
599 expect[i] = ~buf[i];
600 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
601 dma_handle, buf, expect,
602 ROCKER_TEST_DMA_BUF_SIZE);
603 if (err)
604 goto unmap;
605
606 unmap:
607 pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
608 PCI_DMA_BIDIRECTIONAL);
609 free_alloc:
610 kfree(alloc);
611
612 return err;
613 }
614
615 static int rocker_dma_test(const struct rocker *rocker,
616 struct rocker_wait *wait)
617 {
618 int i;
619 int err;
620
621 for (i = 0; i < 8; i++) {
622 err = rocker_dma_test_offset(rocker, wait, i);
623 if (err)
624 return err;
625 }
626 return 0;
627 }
628
629 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
630 {
631 struct rocker_wait *wait = dev_id;
632
633 rocker_wait_wake_up(wait);
634
635 return IRQ_HANDLED;
636 }
637
638 static int rocker_basic_hw_test(const struct rocker *rocker)
639 {
640 const struct pci_dev *pdev = rocker->pdev;
641 struct rocker_wait wait;
642 int err;
643
644 err = rocker_reg_test(rocker);
645 if (err) {
646 dev_err(&pdev->dev, "reg test failed\n");
647 return err;
648 }
649
650 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
651 rocker_test_irq_handler, 0,
652 rocker_driver_name, &wait);
653 if (err) {
654 dev_err(&pdev->dev, "cannot assign test irq\n");
655 return err;
656 }
657
658 rocker_wait_init(&wait);
659 rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
660
661 if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
662 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
663 err = -EIO;
664 goto free_irq;
665 }
666
667 err = rocker_dma_test(rocker, &wait);
668 if (err)
669 dev_err(&pdev->dev, "dma test failed\n");
670
671 free_irq:
672 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
673 return err;
674 }
675
676 /******
677 * TLV
678 ******/
679
680 #define ROCKER_TLV_ALIGNTO 8U
681 #define ROCKER_TLV_ALIGN(len) \
682 (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
683 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
684
685 /* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
686 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
687 * | Header | Pad | Payload | Pad |
688 * | (struct rocker_tlv) | ing | | ing |
689 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
690 * <--------------------------- tlv->len -------------------------->
691 */
692
693 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
694 int *remaining)
695 {
696 int totlen = ROCKER_TLV_ALIGN(tlv->len);
697
698 *remaining -= totlen;
699 return (struct rocker_tlv *) ((char *) tlv + totlen);
700 }
701
702 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
703 {
704 return remaining >= (int) ROCKER_TLV_HDRLEN &&
705 tlv->len >= ROCKER_TLV_HDRLEN &&
706 tlv->len <= remaining;
707 }
708
709 #define rocker_tlv_for_each(pos, head, len, rem) \
710 for (pos = head, rem = len; \
711 rocker_tlv_ok(pos, rem); \
712 pos = rocker_tlv_next(pos, &(rem)))
713
714 #define rocker_tlv_for_each_nested(pos, tlv, rem) \
715 rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \
716 rocker_tlv_len(tlv), rem)
717
718 static int rocker_tlv_attr_size(int payload)
719 {
720 return ROCKER_TLV_HDRLEN + payload;
721 }
722
723 static int rocker_tlv_total_size(int payload)
724 {
725 return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
726 }
727
728 static int rocker_tlv_padlen(int payload)
729 {
730 return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
731 }
732
733 static int rocker_tlv_type(const struct rocker_tlv *tlv)
734 {
735 return tlv->type;
736 }
737
738 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
739 {
740 return (char *) tlv + ROCKER_TLV_HDRLEN;
741 }
742
743 static int rocker_tlv_len(const struct rocker_tlv *tlv)
744 {
745 return tlv->len - ROCKER_TLV_HDRLEN;
746 }
747
748 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
749 {
750 return *(u8 *) rocker_tlv_data(tlv);
751 }
752
753 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
754 {
755 return *(u16 *) rocker_tlv_data(tlv);
756 }
757
758 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
759 {
760 return *(__be16 *) rocker_tlv_data(tlv);
761 }
762
763 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
764 {
765 return *(u32 *) rocker_tlv_data(tlv);
766 }
767
768 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
769 {
770 return *(u64 *) rocker_tlv_data(tlv);
771 }
772
773 static void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype,
774 const char *buf, int buf_len)
775 {
776 const struct rocker_tlv *tlv;
777 const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
778 int rem;
779
780 memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
781
782 rocker_tlv_for_each(tlv, head, buf_len, rem) {
783 u32 type = rocker_tlv_type(tlv);
784
785 if (type > 0 && type <= maxtype)
786 tb[type] = tlv;
787 }
788 }
789
790 static void rocker_tlv_parse_nested(const struct rocker_tlv **tb, int maxtype,
791 const struct rocker_tlv *tlv)
792 {
793 rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
794 rocker_tlv_len(tlv));
795 }
796
797 static void rocker_tlv_parse_desc(const struct rocker_tlv **tb, int maxtype,
798 const struct rocker_desc_info *desc_info)
799 {
800 rocker_tlv_parse(tb, maxtype, desc_info->data,
801 desc_info->desc->tlv_size);
802 }
803
804 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
805 {
806 return (struct rocker_tlv *) ((char *) desc_info->data +
807 desc_info->tlv_size);
808 }
809
810 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
811 int attrtype, int attrlen, const void *data)
812 {
813 int tail_room = desc_info->data_size - desc_info->tlv_size;
814 int total_size = rocker_tlv_total_size(attrlen);
815 struct rocker_tlv *tlv;
816
817 if (unlikely(tail_room < total_size))
818 return -EMSGSIZE;
819
820 tlv = rocker_tlv_start(desc_info);
821 desc_info->tlv_size += total_size;
822 tlv->type = attrtype;
823 tlv->len = rocker_tlv_attr_size(attrlen);
824 memcpy(rocker_tlv_data(tlv), data, attrlen);
825 memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
826 return 0;
827 }
828
829 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
830 int attrtype, u8 value)
831 {
832 return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
833 }
834
835 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
836 int attrtype, u16 value)
837 {
838 return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
839 }
840
841 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
842 int attrtype, __be16 value)
843 {
844 return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
845 }
846
847 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
848 int attrtype, u32 value)
849 {
850 return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
851 }
852
853 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
854 int attrtype, __be32 value)
855 {
856 return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
857 }
858
859 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
860 int attrtype, u64 value)
861 {
862 return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
863 }
864
865 static struct rocker_tlv *
866 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
867 {
868 struct rocker_tlv *start = rocker_tlv_start(desc_info);
869
870 if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
871 return NULL;
872
873 return start;
874 }
875
876 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
877 struct rocker_tlv *start)
878 {
879 start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
880 }
881
882 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
883 const struct rocker_tlv *start)
884 {
885 desc_info->tlv_size = (const char *) start - desc_info->data;
886 }
887
888 /******************************************
889 * DMA rings and descriptors manipulations
890 ******************************************/
891
892 static u32 __pos_inc(u32 pos, size_t limit)
893 {
894 return ++pos == limit ? 0 : pos;
895 }
896
897 static int rocker_desc_err(const struct rocker_desc_info *desc_info)
898 {
899 int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
900
901 switch (err) {
902 case ROCKER_OK:
903 return 0;
904 case -ROCKER_ENOENT:
905 return -ENOENT;
906 case -ROCKER_ENXIO:
907 return -ENXIO;
908 case -ROCKER_ENOMEM:
909 return -ENOMEM;
910 case -ROCKER_EEXIST:
911 return -EEXIST;
912 case -ROCKER_EINVAL:
913 return -EINVAL;
914 case -ROCKER_EMSGSIZE:
915 return -EMSGSIZE;
916 case -ROCKER_ENOTSUP:
917 return -EOPNOTSUPP;
918 case -ROCKER_ENOBUFS:
919 return -ENOBUFS;
920 }
921
922 return -EINVAL;
923 }
924
925 static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
926 {
927 desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
928 }
929
930 static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
931 {
932 u32 comp_err = desc_info->desc->comp_err;
933
934 return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
935 }
936
937 static void *rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
938 {
939 return (void *)(uintptr_t)desc_info->desc->cookie;
940 }
941
942 static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
943 void *ptr)
944 {
945 desc_info->desc->cookie = (uintptr_t) ptr;
946 }
947
948 static struct rocker_desc_info *
949 rocker_desc_head_get(const struct rocker_dma_ring_info *info)
950 {
951 static struct rocker_desc_info *desc_info;
952 u32 head = __pos_inc(info->head, info->size);
953
954 desc_info = &info->desc_info[info->head];
955 if (head == info->tail)
956 return NULL; /* ring full */
957 desc_info->tlv_size = 0;
958 return desc_info;
959 }
960
961 static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
962 {
963 desc_info->desc->buf_size = desc_info->data_size;
964 desc_info->desc->tlv_size = desc_info->tlv_size;
965 }
966
967 static void rocker_desc_head_set(const struct rocker *rocker,
968 struct rocker_dma_ring_info *info,
969 const struct rocker_desc_info *desc_info)
970 {
971 u32 head = __pos_inc(info->head, info->size);
972
973 BUG_ON(head == info->tail);
974 rocker_desc_commit(desc_info);
975 info->head = head;
976 rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
977 }
978
979 static struct rocker_desc_info *
980 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
981 {
982 static struct rocker_desc_info *desc_info;
983
984 if (info->tail == info->head)
985 return NULL; /* nothing to be done between head and tail */
986 desc_info = &info->desc_info[info->tail];
987 if (!rocker_desc_gen(desc_info))
988 return NULL; /* gen bit not set, desc is not ready yet */
989 info->tail = __pos_inc(info->tail, info->size);
990 desc_info->tlv_size = desc_info->desc->tlv_size;
991 return desc_info;
992 }
993
994 static void rocker_dma_ring_credits_set(const struct rocker *rocker,
995 const struct rocker_dma_ring_info *info,
996 u32 credits)
997 {
998 if (credits)
999 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
1000 }
1001
1002 static unsigned long rocker_dma_ring_size_fix(size_t size)
1003 {
1004 return max(ROCKER_DMA_SIZE_MIN,
1005 min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
1006 }
1007
1008 static int rocker_dma_ring_create(const struct rocker *rocker,
1009 unsigned int type,
1010 size_t size,
1011 struct rocker_dma_ring_info *info)
1012 {
1013 int i;
1014
1015 BUG_ON(size != rocker_dma_ring_size_fix(size));
1016 info->size = size;
1017 info->type = type;
1018 info->head = 0;
1019 info->tail = 0;
1020 info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
1021 GFP_KERNEL);
1022 if (!info->desc_info)
1023 return -ENOMEM;
1024
1025 info->desc = pci_alloc_consistent(rocker->pdev,
1026 info->size * sizeof(*info->desc),
1027 &info->mapaddr);
1028 if (!info->desc) {
1029 kfree(info->desc_info);
1030 return -ENOMEM;
1031 }
1032
1033 for (i = 0; i < info->size; i++)
1034 info->desc_info[i].desc = &info->desc[i];
1035
1036 rocker_write32(rocker, DMA_DESC_CTRL(info->type),
1037 ROCKER_DMA_DESC_CTRL_RESET);
1038 rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
1039 rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
1040
1041 return 0;
1042 }
1043
1044 static void rocker_dma_ring_destroy(const struct rocker *rocker,
1045 const struct rocker_dma_ring_info *info)
1046 {
1047 rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
1048
1049 pci_free_consistent(rocker->pdev,
1050 info->size * sizeof(struct rocker_desc),
1051 info->desc, info->mapaddr);
1052 kfree(info->desc_info);
1053 }
1054
1055 static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
1056 struct rocker_dma_ring_info *info)
1057 {
1058 int i;
1059
1060 BUG_ON(info->head || info->tail);
1061
1062 /* When ring is consumer, we need to advance head for each desc.
1063 * That tells hw that the desc is ready to be used by it.
1064 */
1065 for (i = 0; i < info->size - 1; i++)
1066 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
1067 rocker_desc_commit(&info->desc_info[i]);
1068 }
1069
1070 static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
1071 const struct rocker_dma_ring_info *info,
1072 int direction, size_t buf_size)
1073 {
1074 struct pci_dev *pdev = rocker->pdev;
1075 int i;
1076 int err;
1077
1078 for (i = 0; i < info->size; i++) {
1079 struct rocker_desc_info *desc_info = &info->desc_info[i];
1080 struct rocker_desc *desc = &info->desc[i];
1081 dma_addr_t dma_handle;
1082 char *buf;
1083
1084 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
1085 if (!buf) {
1086 err = -ENOMEM;
1087 goto rollback;
1088 }
1089
1090 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1091 if (pci_dma_mapping_error(pdev, dma_handle)) {
1092 kfree(buf);
1093 err = -EIO;
1094 goto rollback;
1095 }
1096
1097 desc_info->data = buf;
1098 desc_info->data_size = buf_size;
1099 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1100
1101 desc->buf_addr = dma_handle;
1102 desc->buf_size = buf_size;
1103 }
1104 return 0;
1105
1106 rollback:
1107 for (i--; i >= 0; i--) {
1108 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1109
1110 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1111 desc_info->data_size, direction);
1112 kfree(desc_info->data);
1113 }
1114 return err;
1115 }
1116
1117 static void rocker_dma_ring_bufs_free(const struct rocker *rocker,
1118 const struct rocker_dma_ring_info *info,
1119 int direction)
1120 {
1121 struct pci_dev *pdev = rocker->pdev;
1122 int i;
1123
1124 for (i = 0; i < info->size; i++) {
1125 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1126 struct rocker_desc *desc = &info->desc[i];
1127
1128 desc->buf_addr = 0;
1129 desc->buf_size = 0;
1130 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1131 desc_info->data_size, direction);
1132 kfree(desc_info->data);
1133 }
1134 }
1135
1136 static int rocker_dma_rings_init(struct rocker *rocker)
1137 {
1138 const struct pci_dev *pdev = rocker->pdev;
1139 int err;
1140
1141 err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1142 ROCKER_DMA_CMD_DEFAULT_SIZE,
1143 &rocker->cmd_ring);
1144 if (err) {
1145 dev_err(&pdev->dev, "failed to create command dma ring\n");
1146 return err;
1147 }
1148
1149 spin_lock_init(&rocker->cmd_ring_lock);
1150
1151 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1152 PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1153 if (err) {
1154 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1155 goto err_dma_cmd_ring_bufs_alloc;
1156 }
1157
1158 err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1159 ROCKER_DMA_EVENT_DEFAULT_SIZE,
1160 &rocker->event_ring);
1161 if (err) {
1162 dev_err(&pdev->dev, "failed to create event dma ring\n");
1163 goto err_dma_event_ring_create;
1164 }
1165
1166 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1167 PCI_DMA_FROMDEVICE, PAGE_SIZE);
1168 if (err) {
1169 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1170 goto err_dma_event_ring_bufs_alloc;
1171 }
1172 rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1173 return 0;
1174
1175 err_dma_event_ring_bufs_alloc:
1176 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1177 err_dma_event_ring_create:
1178 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1179 PCI_DMA_BIDIRECTIONAL);
1180 err_dma_cmd_ring_bufs_alloc:
1181 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1182 return err;
1183 }
1184
1185 static void rocker_dma_rings_fini(struct rocker *rocker)
1186 {
1187 rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1188 PCI_DMA_BIDIRECTIONAL);
1189 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1190 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1191 PCI_DMA_BIDIRECTIONAL);
1192 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1193 }
1194
1195 static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port,
1196 struct rocker_desc_info *desc_info,
1197 struct sk_buff *skb, size_t buf_len)
1198 {
1199 const struct rocker *rocker = rocker_port->rocker;
1200 struct pci_dev *pdev = rocker->pdev;
1201 dma_addr_t dma_handle;
1202
1203 dma_handle = pci_map_single(pdev, skb->data, buf_len,
1204 PCI_DMA_FROMDEVICE);
1205 if (pci_dma_mapping_error(pdev, dma_handle))
1206 return -EIO;
1207 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1208 goto tlv_put_failure;
1209 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1210 goto tlv_put_failure;
1211 return 0;
1212
1213 tlv_put_failure:
1214 pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1215 desc_info->tlv_size = 0;
1216 return -EMSGSIZE;
1217 }
1218
1219 static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port)
1220 {
1221 return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1222 }
1223
1224 static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port,
1225 struct rocker_desc_info *desc_info)
1226 {
1227 struct net_device *dev = rocker_port->dev;
1228 struct sk_buff *skb;
1229 size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1230 int err;
1231
1232 /* Ensure that hw will see tlv_size zero in case of an error.
1233 * That tells hw to use another descriptor.
1234 */
1235 rocker_desc_cookie_ptr_set(desc_info, NULL);
1236 desc_info->tlv_size = 0;
1237
1238 skb = netdev_alloc_skb_ip_align(dev, buf_len);
1239 if (!skb)
1240 return -ENOMEM;
1241 err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len);
1242 if (err) {
1243 dev_kfree_skb_any(skb);
1244 return err;
1245 }
1246 rocker_desc_cookie_ptr_set(desc_info, skb);
1247 return 0;
1248 }
1249
1250 static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker,
1251 const struct rocker_tlv **attrs)
1252 {
1253 struct pci_dev *pdev = rocker->pdev;
1254 dma_addr_t dma_handle;
1255 size_t len;
1256
1257 if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1258 !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1259 return;
1260 dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1261 len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1262 pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1263 }
1264
1265 static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker,
1266 const struct rocker_desc_info *desc_info)
1267 {
1268 const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1269 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1270
1271 if (!skb)
1272 return;
1273 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1274 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1275 dev_kfree_skb_any(skb);
1276 }
1277
1278 static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port)
1279 {
1280 const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1281 const struct rocker *rocker = rocker_port->rocker;
1282 int i;
1283 int err;
1284
1285 for (i = 0; i < rx_ring->size; i++) {
1286 err = rocker_dma_rx_ring_skb_alloc(rocker_port,
1287 &rx_ring->desc_info[i]);
1288 if (err)
1289 goto rollback;
1290 }
1291 return 0;
1292
1293 rollback:
1294 for (i--; i >= 0; i--)
1295 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1296 return err;
1297 }
1298
1299 static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port)
1300 {
1301 const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1302 const struct rocker *rocker = rocker_port->rocker;
1303 int i;
1304
1305 for (i = 0; i < rx_ring->size; i++)
1306 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1307 }
1308
1309 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1310 {
1311 struct rocker *rocker = rocker_port->rocker;
1312 int err;
1313
1314 err = rocker_dma_ring_create(rocker,
1315 ROCKER_DMA_TX(rocker_port->port_number),
1316 ROCKER_DMA_TX_DEFAULT_SIZE,
1317 &rocker_port->tx_ring);
1318 if (err) {
1319 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1320 return err;
1321 }
1322
1323 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1324 PCI_DMA_TODEVICE,
1325 ROCKER_DMA_TX_DESC_SIZE);
1326 if (err) {
1327 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1328 goto err_dma_tx_ring_bufs_alloc;
1329 }
1330
1331 err = rocker_dma_ring_create(rocker,
1332 ROCKER_DMA_RX(rocker_port->port_number),
1333 ROCKER_DMA_RX_DEFAULT_SIZE,
1334 &rocker_port->rx_ring);
1335 if (err) {
1336 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1337 goto err_dma_rx_ring_create;
1338 }
1339
1340 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1341 PCI_DMA_BIDIRECTIONAL,
1342 ROCKER_DMA_RX_DESC_SIZE);
1343 if (err) {
1344 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1345 goto err_dma_rx_ring_bufs_alloc;
1346 }
1347
1348 err = rocker_dma_rx_ring_skbs_alloc(rocker_port);
1349 if (err) {
1350 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1351 goto err_dma_rx_ring_skbs_alloc;
1352 }
1353 rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1354
1355 return 0;
1356
1357 err_dma_rx_ring_skbs_alloc:
1358 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1359 PCI_DMA_BIDIRECTIONAL);
1360 err_dma_rx_ring_bufs_alloc:
1361 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1362 err_dma_rx_ring_create:
1363 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1364 PCI_DMA_TODEVICE);
1365 err_dma_tx_ring_bufs_alloc:
1366 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1367 return err;
1368 }
1369
1370 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1371 {
1372 struct rocker *rocker = rocker_port->rocker;
1373
1374 rocker_dma_rx_ring_skbs_free(rocker_port);
1375 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1376 PCI_DMA_BIDIRECTIONAL);
1377 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1378 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1379 PCI_DMA_TODEVICE);
1380 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1381 }
1382
1383 static void rocker_port_set_enable(const struct rocker_port *rocker_port,
1384 bool enable)
1385 {
1386 u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1387
1388 if (enable)
1389 val |= 1ULL << rocker_port->pport;
1390 else
1391 val &= ~(1ULL << rocker_port->pport);
1392 rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1393 }
1394
1395 /********************************
1396 * Interrupt handler and helpers
1397 ********************************/
1398
1399 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1400 {
1401 struct rocker *rocker = dev_id;
1402 const struct rocker_desc_info *desc_info;
1403 struct rocker_wait *wait;
1404 u32 credits = 0;
1405
1406 spin_lock(&rocker->cmd_ring_lock);
1407 while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1408 wait = rocker_desc_cookie_ptr_get(desc_info);
1409 if (wait->nowait) {
1410 rocker_desc_gen_clear(desc_info);
1411 rocker_wait_destroy(SWITCHDEV_TRANS_NONE, wait);
1412 } else {
1413 rocker_wait_wake_up(wait);
1414 }
1415 credits++;
1416 }
1417 spin_unlock(&rocker->cmd_ring_lock);
1418 rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1419
1420 return IRQ_HANDLED;
1421 }
1422
1423 static void rocker_port_link_up(const struct rocker_port *rocker_port)
1424 {
1425 netif_carrier_on(rocker_port->dev);
1426 netdev_info(rocker_port->dev, "Link is up\n");
1427 }
1428
1429 static void rocker_port_link_down(const struct rocker_port *rocker_port)
1430 {
1431 netif_carrier_off(rocker_port->dev);
1432 netdev_info(rocker_port->dev, "Link is down\n");
1433 }
1434
1435 static int rocker_event_link_change(const struct rocker *rocker,
1436 const struct rocker_tlv *info)
1437 {
1438 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1439 unsigned int port_number;
1440 bool link_up;
1441 struct rocker_port *rocker_port;
1442
1443 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1444 if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1445 !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1446 return -EIO;
1447 port_number =
1448 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1449 link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1450
1451 if (port_number >= rocker->port_count)
1452 return -EINVAL;
1453
1454 rocker_port = rocker->ports[port_number];
1455 if (netif_carrier_ok(rocker_port->dev) != link_up) {
1456 if (link_up)
1457 rocker_port_link_up(rocker_port);
1458 else
1459 rocker_port_link_down(rocker_port);
1460 }
1461
1462 return 0;
1463 }
1464
1465 static int rocker_port_fdb(struct rocker_port *rocker_port,
1466 enum switchdev_trans trans,
1467 const unsigned char *addr,
1468 __be16 vlan_id, int flags);
1469
1470 static int rocker_event_mac_vlan_seen(const struct rocker *rocker,
1471 const struct rocker_tlv *info)
1472 {
1473 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1474 unsigned int port_number;
1475 struct rocker_port *rocker_port;
1476 const unsigned char *addr;
1477 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1478 __be16 vlan_id;
1479
1480 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1481 if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1482 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1483 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1484 return -EIO;
1485 port_number =
1486 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1487 addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1488 vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1489
1490 if (port_number >= rocker->port_count)
1491 return -EINVAL;
1492
1493 rocker_port = rocker->ports[port_number];
1494
1495 if (rocker_port->stp_state != BR_STATE_LEARNING &&
1496 rocker_port->stp_state != BR_STATE_FORWARDING)
1497 return 0;
1498
1499 return rocker_port_fdb(rocker_port, SWITCHDEV_TRANS_NONE,
1500 addr, vlan_id, flags);
1501 }
1502
1503 static int rocker_event_process(const struct rocker *rocker,
1504 const struct rocker_desc_info *desc_info)
1505 {
1506 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1507 const struct rocker_tlv *info;
1508 u16 type;
1509
1510 rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1511 if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1512 !attrs[ROCKER_TLV_EVENT_INFO])
1513 return -EIO;
1514
1515 type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1516 info = attrs[ROCKER_TLV_EVENT_INFO];
1517
1518 switch (type) {
1519 case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1520 return rocker_event_link_change(rocker, info);
1521 case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1522 return rocker_event_mac_vlan_seen(rocker, info);
1523 }
1524
1525 return -EOPNOTSUPP;
1526 }
1527
1528 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1529 {
1530 struct rocker *rocker = dev_id;
1531 const struct pci_dev *pdev = rocker->pdev;
1532 const struct rocker_desc_info *desc_info;
1533 u32 credits = 0;
1534 int err;
1535
1536 while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1537 err = rocker_desc_err(desc_info);
1538 if (err) {
1539 dev_err(&pdev->dev, "event desc received with err %d\n",
1540 err);
1541 } else {
1542 err = rocker_event_process(rocker, desc_info);
1543 if (err)
1544 dev_err(&pdev->dev, "event processing failed with err %d\n",
1545 err);
1546 }
1547 rocker_desc_gen_clear(desc_info);
1548 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1549 credits++;
1550 }
1551 rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1552
1553 return IRQ_HANDLED;
1554 }
1555
1556 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1557 {
1558 struct rocker_port *rocker_port = dev_id;
1559
1560 napi_schedule(&rocker_port->napi_tx);
1561 return IRQ_HANDLED;
1562 }
1563
1564 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1565 {
1566 struct rocker_port *rocker_port = dev_id;
1567
1568 napi_schedule(&rocker_port->napi_rx);
1569 return IRQ_HANDLED;
1570 }
1571
1572 /********************
1573 * Command interface
1574 ********************/
1575
1576 typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
1577 struct rocker_desc_info *desc_info,
1578 void *priv);
1579
1580 typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
1581 const struct rocker_desc_info *desc_info,
1582 void *priv);
1583
1584 static int rocker_cmd_exec(struct rocker_port *rocker_port,
1585 enum switchdev_trans trans, int flags,
1586 rocker_cmd_prep_cb_t prepare, void *prepare_priv,
1587 rocker_cmd_proc_cb_t process, void *process_priv)
1588 {
1589 struct rocker *rocker = rocker_port->rocker;
1590 struct rocker_desc_info *desc_info;
1591 struct rocker_wait *wait;
1592 bool nowait = !!(flags & ROCKER_OP_FLAG_NOWAIT);
1593 unsigned long lock_flags;
1594 int err;
1595
1596 wait = rocker_wait_create(rocker_port, trans, flags);
1597 if (!wait)
1598 return -ENOMEM;
1599 wait->nowait = nowait;
1600
1601 spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags);
1602
1603 desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1604 if (!desc_info) {
1605 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1606 err = -EAGAIN;
1607 goto out;
1608 }
1609
1610 err = prepare(rocker_port, desc_info, prepare_priv);
1611 if (err) {
1612 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1613 goto out;
1614 }
1615
1616 rocker_desc_cookie_ptr_set(desc_info, wait);
1617
1618 if (trans != SWITCHDEV_TRANS_PREPARE)
1619 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1620
1621 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1622
1623 if (nowait)
1624 return 0;
1625
1626 if (trans != SWITCHDEV_TRANS_PREPARE)
1627 if (!rocker_wait_event_timeout(wait, HZ / 10))
1628 return -EIO;
1629
1630 err = rocker_desc_err(desc_info);
1631 if (err)
1632 return err;
1633
1634 if (process)
1635 err = process(rocker_port, desc_info, process_priv);
1636
1637 rocker_desc_gen_clear(desc_info);
1638 out:
1639 rocker_wait_destroy(trans, wait);
1640 return err;
1641 }
1642
1643 static int
1644 rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port,
1645 struct rocker_desc_info *desc_info,
1646 void *priv)
1647 {
1648 struct rocker_tlv *cmd_info;
1649
1650 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1651 ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1652 return -EMSGSIZE;
1653 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1654 if (!cmd_info)
1655 return -EMSGSIZE;
1656 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1657 rocker_port->pport))
1658 return -EMSGSIZE;
1659 rocker_tlv_nest_end(desc_info, cmd_info);
1660 return 0;
1661 }
1662
1663 static int
1664 rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port,
1665 const struct rocker_desc_info *desc_info,
1666 void *priv)
1667 {
1668 struct ethtool_cmd *ecmd = priv;
1669 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1670 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1671 u32 speed;
1672 u8 duplex;
1673 u8 autoneg;
1674
1675 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1676 if (!attrs[ROCKER_TLV_CMD_INFO])
1677 return -EIO;
1678
1679 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1680 attrs[ROCKER_TLV_CMD_INFO]);
1681 if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1682 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1683 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1684 return -EIO;
1685
1686 speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1687 duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1688 autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1689
1690 ecmd->transceiver = XCVR_INTERNAL;
1691 ecmd->supported = SUPPORTED_TP;
1692 ecmd->phy_address = 0xff;
1693 ecmd->port = PORT_TP;
1694 ethtool_cmd_speed_set(ecmd, speed);
1695 ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1696 ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1697
1698 return 0;
1699 }
1700
1701 static int
1702 rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port,
1703 const struct rocker_desc_info *desc_info,
1704 void *priv)
1705 {
1706 unsigned char *macaddr = priv;
1707 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1708 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1709 const struct rocker_tlv *attr;
1710
1711 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1712 if (!attrs[ROCKER_TLV_CMD_INFO])
1713 return -EIO;
1714
1715 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1716 attrs[ROCKER_TLV_CMD_INFO]);
1717 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1718 if (!attr)
1719 return -EIO;
1720
1721 if (rocker_tlv_len(attr) != ETH_ALEN)
1722 return -EINVAL;
1723
1724 ether_addr_copy(macaddr, rocker_tlv_data(attr));
1725 return 0;
1726 }
1727
1728 struct port_name {
1729 char *buf;
1730 size_t len;
1731 };
1732
1733 static int
1734 rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port,
1735 const struct rocker_desc_info *desc_info,
1736 void *priv)
1737 {
1738 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1739 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1740 struct port_name *name = priv;
1741 const struct rocker_tlv *attr;
1742 size_t i, j, len;
1743 const char *str;
1744
1745 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1746 if (!attrs[ROCKER_TLV_CMD_INFO])
1747 return -EIO;
1748
1749 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1750 attrs[ROCKER_TLV_CMD_INFO]);
1751 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1752 if (!attr)
1753 return -EIO;
1754
1755 len = min_t(size_t, rocker_tlv_len(attr), name->len);
1756 str = rocker_tlv_data(attr);
1757
1758 /* make sure name only contains alphanumeric characters */
1759 for (i = j = 0; i < len; ++i) {
1760 if (isalnum(str[i])) {
1761 name->buf[j] = str[i];
1762 j++;
1763 }
1764 }
1765
1766 if (j == 0)
1767 return -EIO;
1768
1769 name->buf[j] = '\0';
1770
1771 return 0;
1772 }
1773
1774 static int
1775 rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port,
1776 struct rocker_desc_info *desc_info,
1777 void *priv)
1778 {
1779 struct ethtool_cmd *ecmd = priv;
1780 struct rocker_tlv *cmd_info;
1781
1782 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1783 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1784 return -EMSGSIZE;
1785 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1786 if (!cmd_info)
1787 return -EMSGSIZE;
1788 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1789 rocker_port->pport))
1790 return -EMSGSIZE;
1791 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1792 ethtool_cmd_speed(ecmd)))
1793 return -EMSGSIZE;
1794 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1795 ecmd->duplex))
1796 return -EMSGSIZE;
1797 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1798 ecmd->autoneg))
1799 return -EMSGSIZE;
1800 rocker_tlv_nest_end(desc_info, cmd_info);
1801 return 0;
1802 }
1803
1804 static int
1805 rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port,
1806 struct rocker_desc_info *desc_info,
1807 void *priv)
1808 {
1809 const unsigned char *macaddr = priv;
1810 struct rocker_tlv *cmd_info;
1811
1812 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1813 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1814 return -EMSGSIZE;
1815 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1816 if (!cmd_info)
1817 return -EMSGSIZE;
1818 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1819 rocker_port->pport))
1820 return -EMSGSIZE;
1821 if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1822 ETH_ALEN, macaddr))
1823 return -EMSGSIZE;
1824 rocker_tlv_nest_end(desc_info, cmd_info);
1825 return 0;
1826 }
1827
1828 static int
1829 rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port,
1830 struct rocker_desc_info *desc_info,
1831 void *priv)
1832 {
1833 int mtu = *(int *)priv;
1834 struct rocker_tlv *cmd_info;
1835
1836 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1837 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1838 return -EMSGSIZE;
1839 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1840 if (!cmd_info)
1841 return -EMSGSIZE;
1842 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1843 rocker_port->pport))
1844 return -EMSGSIZE;
1845 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU,
1846 mtu))
1847 return -EMSGSIZE;
1848 rocker_tlv_nest_end(desc_info, cmd_info);
1849 return 0;
1850 }
1851
1852 static int
1853 rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port,
1854 struct rocker_desc_info *desc_info,
1855 void *priv)
1856 {
1857 struct rocker_tlv *cmd_info;
1858
1859 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1860 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1861 return -EMSGSIZE;
1862 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1863 if (!cmd_info)
1864 return -EMSGSIZE;
1865 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1866 rocker_port->pport))
1867 return -EMSGSIZE;
1868 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1869 !!(rocker_port->brport_flags & BR_LEARNING)))
1870 return -EMSGSIZE;
1871 rocker_tlv_nest_end(desc_info, cmd_info);
1872 return 0;
1873 }
1874
1875 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1876 struct ethtool_cmd *ecmd)
1877 {
1878 return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1879 rocker_cmd_get_port_settings_prep, NULL,
1880 rocker_cmd_get_port_settings_ethtool_proc,
1881 ecmd);
1882 }
1883
1884 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1885 unsigned char *macaddr)
1886 {
1887 return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1888 rocker_cmd_get_port_settings_prep, NULL,
1889 rocker_cmd_get_port_settings_macaddr_proc,
1890 macaddr);
1891 }
1892
1893 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1894 struct ethtool_cmd *ecmd)
1895 {
1896 return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1897 rocker_cmd_set_port_settings_ethtool_prep,
1898 ecmd, NULL, NULL);
1899 }
1900
1901 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1902 unsigned char *macaddr)
1903 {
1904 return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1905 rocker_cmd_set_port_settings_macaddr_prep,
1906 macaddr, NULL, NULL);
1907 }
1908
1909 static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port,
1910 int mtu)
1911 {
1912 return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
1913 rocker_cmd_set_port_settings_mtu_prep,
1914 &mtu, NULL, NULL);
1915 }
1916
1917 static int rocker_port_set_learning(struct rocker_port *rocker_port,
1918 enum switchdev_trans trans)
1919 {
1920 return rocker_cmd_exec(rocker_port, trans, 0,
1921 rocker_cmd_set_port_learning_prep,
1922 NULL, NULL, NULL);
1923 }
1924
1925 static int
1926 rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1927 const struct rocker_flow_tbl_entry *entry)
1928 {
1929 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1930 entry->key.ig_port.in_pport))
1931 return -EMSGSIZE;
1932 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1933 entry->key.ig_port.in_pport_mask))
1934 return -EMSGSIZE;
1935 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1936 entry->key.ig_port.goto_tbl))
1937 return -EMSGSIZE;
1938
1939 return 0;
1940 }
1941
1942 static int
1943 rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1944 const struct rocker_flow_tbl_entry *entry)
1945 {
1946 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1947 entry->key.vlan.in_pport))
1948 return -EMSGSIZE;
1949 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1950 entry->key.vlan.vlan_id))
1951 return -EMSGSIZE;
1952 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1953 entry->key.vlan.vlan_id_mask))
1954 return -EMSGSIZE;
1955 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1956 entry->key.vlan.goto_tbl))
1957 return -EMSGSIZE;
1958 if (entry->key.vlan.untagged &&
1959 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1960 entry->key.vlan.new_vlan_id))
1961 return -EMSGSIZE;
1962
1963 return 0;
1964 }
1965
1966 static int
1967 rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1968 const struct rocker_flow_tbl_entry *entry)
1969 {
1970 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1971 entry->key.term_mac.in_pport))
1972 return -EMSGSIZE;
1973 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1974 entry->key.term_mac.in_pport_mask))
1975 return -EMSGSIZE;
1976 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1977 entry->key.term_mac.eth_type))
1978 return -EMSGSIZE;
1979 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1980 ETH_ALEN, entry->key.term_mac.eth_dst))
1981 return -EMSGSIZE;
1982 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1983 ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1984 return -EMSGSIZE;
1985 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1986 entry->key.term_mac.vlan_id))
1987 return -EMSGSIZE;
1988 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1989 entry->key.term_mac.vlan_id_mask))
1990 return -EMSGSIZE;
1991 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1992 entry->key.term_mac.goto_tbl))
1993 return -EMSGSIZE;
1994 if (entry->key.term_mac.copy_to_cpu &&
1995 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1996 entry->key.term_mac.copy_to_cpu))
1997 return -EMSGSIZE;
1998
1999 return 0;
2000 }
2001
2002 static int
2003 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
2004 const struct rocker_flow_tbl_entry *entry)
2005 {
2006 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2007 entry->key.ucast_routing.eth_type))
2008 return -EMSGSIZE;
2009 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
2010 entry->key.ucast_routing.dst4))
2011 return -EMSGSIZE;
2012 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
2013 entry->key.ucast_routing.dst4_mask))
2014 return -EMSGSIZE;
2015 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2016 entry->key.ucast_routing.goto_tbl))
2017 return -EMSGSIZE;
2018 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2019 entry->key.ucast_routing.group_id))
2020 return -EMSGSIZE;
2021
2022 return 0;
2023 }
2024
2025 static int
2026 rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
2027 const struct rocker_flow_tbl_entry *entry)
2028 {
2029 if (entry->key.bridge.has_eth_dst &&
2030 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2031 ETH_ALEN, entry->key.bridge.eth_dst))
2032 return -EMSGSIZE;
2033 if (entry->key.bridge.has_eth_dst_mask &&
2034 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2035 ETH_ALEN, entry->key.bridge.eth_dst_mask))
2036 return -EMSGSIZE;
2037 if (entry->key.bridge.vlan_id &&
2038 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2039 entry->key.bridge.vlan_id))
2040 return -EMSGSIZE;
2041 if (entry->key.bridge.tunnel_id &&
2042 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
2043 entry->key.bridge.tunnel_id))
2044 return -EMSGSIZE;
2045 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2046 entry->key.bridge.goto_tbl))
2047 return -EMSGSIZE;
2048 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2049 entry->key.bridge.group_id))
2050 return -EMSGSIZE;
2051 if (entry->key.bridge.copy_to_cpu &&
2052 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2053 entry->key.bridge.copy_to_cpu))
2054 return -EMSGSIZE;
2055
2056 return 0;
2057 }
2058
2059 static int
2060 rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
2061 const struct rocker_flow_tbl_entry *entry)
2062 {
2063 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2064 entry->key.acl.in_pport))
2065 return -EMSGSIZE;
2066 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2067 entry->key.acl.in_pport_mask))
2068 return -EMSGSIZE;
2069 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2070 ETH_ALEN, entry->key.acl.eth_src))
2071 return -EMSGSIZE;
2072 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
2073 ETH_ALEN, entry->key.acl.eth_src_mask))
2074 return -EMSGSIZE;
2075 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2076 ETH_ALEN, entry->key.acl.eth_dst))
2077 return -EMSGSIZE;
2078 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2079 ETH_ALEN, entry->key.acl.eth_dst_mask))
2080 return -EMSGSIZE;
2081 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2082 entry->key.acl.eth_type))
2083 return -EMSGSIZE;
2084 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2085 entry->key.acl.vlan_id))
2086 return -EMSGSIZE;
2087 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2088 entry->key.acl.vlan_id_mask))
2089 return -EMSGSIZE;
2090
2091 switch (ntohs(entry->key.acl.eth_type)) {
2092 case ETH_P_IP:
2093 case ETH_P_IPV6:
2094 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
2095 entry->key.acl.ip_proto))
2096 return -EMSGSIZE;
2097 if (rocker_tlv_put_u8(desc_info,
2098 ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
2099 entry->key.acl.ip_proto_mask))
2100 return -EMSGSIZE;
2101 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
2102 entry->key.acl.ip_tos & 0x3f))
2103 return -EMSGSIZE;
2104 if (rocker_tlv_put_u8(desc_info,
2105 ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
2106 entry->key.acl.ip_tos_mask & 0x3f))
2107 return -EMSGSIZE;
2108 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
2109 (entry->key.acl.ip_tos & 0xc0) >> 6))
2110 return -EMSGSIZE;
2111 if (rocker_tlv_put_u8(desc_info,
2112 ROCKER_TLV_OF_DPA_IP_ECN_MASK,
2113 (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
2114 return -EMSGSIZE;
2115 break;
2116 }
2117
2118 if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
2119 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2120 entry->key.acl.group_id))
2121 return -EMSGSIZE;
2122
2123 return 0;
2124 }
2125
2126 static int rocker_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
2127 struct rocker_desc_info *desc_info,
2128 void *priv)
2129 {
2130 const struct rocker_flow_tbl_entry *entry = priv;
2131 struct rocker_tlv *cmd_info;
2132 int err = 0;
2133
2134 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2135 return -EMSGSIZE;
2136 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2137 if (!cmd_info)
2138 return -EMSGSIZE;
2139 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2140 entry->key.tbl_id))
2141 return -EMSGSIZE;
2142 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2143 entry->key.priority))
2144 return -EMSGSIZE;
2145 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2146 return -EMSGSIZE;
2147 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2148 entry->cookie))
2149 return -EMSGSIZE;
2150
2151 switch (entry->key.tbl_id) {
2152 case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2153 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2154 break;
2155 case ROCKER_OF_DPA_TABLE_ID_VLAN:
2156 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2157 break;
2158 case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2159 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2160 break;
2161 case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2162 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2163 break;
2164 case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2165 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2166 break;
2167 case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2168 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2169 break;
2170 default:
2171 err = -ENOTSUPP;
2172 break;
2173 }
2174
2175 if (err)
2176 return err;
2177
2178 rocker_tlv_nest_end(desc_info, cmd_info);
2179
2180 return 0;
2181 }
2182
2183 static int rocker_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
2184 struct rocker_desc_info *desc_info,
2185 void *priv)
2186 {
2187 const struct rocker_flow_tbl_entry *entry = priv;
2188 struct rocker_tlv *cmd_info;
2189
2190 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2191 return -EMSGSIZE;
2192 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2193 if (!cmd_info)
2194 return -EMSGSIZE;
2195 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2196 entry->cookie))
2197 return -EMSGSIZE;
2198 rocker_tlv_nest_end(desc_info, cmd_info);
2199
2200 return 0;
2201 }
2202
2203 static int
2204 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2205 struct rocker_group_tbl_entry *entry)
2206 {
2207 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2208 ROCKER_GROUP_PORT_GET(entry->group_id)))
2209 return -EMSGSIZE;
2210 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2211 entry->l2_interface.pop_vlan))
2212 return -EMSGSIZE;
2213
2214 return 0;
2215 }
2216
2217 static int
2218 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2219 const struct rocker_group_tbl_entry *entry)
2220 {
2221 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2222 entry->l2_rewrite.group_id))
2223 return -EMSGSIZE;
2224 if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2225 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2226 ETH_ALEN, entry->l2_rewrite.eth_src))
2227 return -EMSGSIZE;
2228 if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2229 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2230 ETH_ALEN, entry->l2_rewrite.eth_dst))
2231 return -EMSGSIZE;
2232 if (entry->l2_rewrite.vlan_id &&
2233 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2234 entry->l2_rewrite.vlan_id))
2235 return -EMSGSIZE;
2236
2237 return 0;
2238 }
2239
2240 static int
2241 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2242 const struct rocker_group_tbl_entry *entry)
2243 {
2244 int i;
2245 struct rocker_tlv *group_ids;
2246
2247 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2248 entry->group_count))
2249 return -EMSGSIZE;
2250
2251 group_ids = rocker_tlv_nest_start(desc_info,
2252 ROCKER_TLV_OF_DPA_GROUP_IDS);
2253 if (!group_ids)
2254 return -EMSGSIZE;
2255
2256 for (i = 0; i < entry->group_count; i++)
2257 /* Note TLV array is 1-based */
2258 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2259 return -EMSGSIZE;
2260
2261 rocker_tlv_nest_end(desc_info, group_ids);
2262
2263 return 0;
2264 }
2265
2266 static int
2267 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2268 const struct rocker_group_tbl_entry *entry)
2269 {
2270 if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2271 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2272 ETH_ALEN, entry->l3_unicast.eth_src))
2273 return -EMSGSIZE;
2274 if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2275 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2276 ETH_ALEN, entry->l3_unicast.eth_dst))
2277 return -EMSGSIZE;
2278 if (entry->l3_unicast.vlan_id &&
2279 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2280 entry->l3_unicast.vlan_id))
2281 return -EMSGSIZE;
2282 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2283 entry->l3_unicast.ttl_check))
2284 return -EMSGSIZE;
2285 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2286 entry->l3_unicast.group_id))
2287 return -EMSGSIZE;
2288
2289 return 0;
2290 }
2291
2292 static int rocker_cmd_group_tbl_add(const struct rocker_port *rocker_port,
2293 struct rocker_desc_info *desc_info,
2294 void *priv)
2295 {
2296 struct rocker_group_tbl_entry *entry = priv;
2297 struct rocker_tlv *cmd_info;
2298 int err = 0;
2299
2300 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2301 return -EMSGSIZE;
2302 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2303 if (!cmd_info)
2304 return -EMSGSIZE;
2305
2306 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2307 entry->group_id))
2308 return -EMSGSIZE;
2309
2310 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2311 case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2312 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2313 break;
2314 case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2315 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2316 break;
2317 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2318 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2319 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2320 break;
2321 case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2322 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2323 break;
2324 default:
2325 err = -ENOTSUPP;
2326 break;
2327 }
2328
2329 if (err)
2330 return err;
2331
2332 rocker_tlv_nest_end(desc_info, cmd_info);
2333
2334 return 0;
2335 }
2336
2337 static int rocker_cmd_group_tbl_del(const struct rocker_port *rocker_port,
2338 struct rocker_desc_info *desc_info,
2339 void *priv)
2340 {
2341 const struct rocker_group_tbl_entry *entry = priv;
2342 struct rocker_tlv *cmd_info;
2343
2344 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2345 return -EMSGSIZE;
2346 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2347 if (!cmd_info)
2348 return -EMSGSIZE;
2349 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2350 entry->group_id))
2351 return -EMSGSIZE;
2352 rocker_tlv_nest_end(desc_info, cmd_info);
2353
2354 return 0;
2355 }
2356
2357 /***************************************************
2358 * Flow, group, FDB, internal VLAN and neigh tables
2359 ***************************************************/
2360
2361 static int rocker_init_tbls(struct rocker *rocker)
2362 {
2363 hash_init(rocker->flow_tbl);
2364 spin_lock_init(&rocker->flow_tbl_lock);
2365
2366 hash_init(rocker->group_tbl);
2367 spin_lock_init(&rocker->group_tbl_lock);
2368
2369 hash_init(rocker->fdb_tbl);
2370 spin_lock_init(&rocker->fdb_tbl_lock);
2371
2372 hash_init(rocker->internal_vlan_tbl);
2373 spin_lock_init(&rocker->internal_vlan_tbl_lock);
2374
2375 hash_init(rocker->neigh_tbl);
2376 spin_lock_init(&rocker->neigh_tbl_lock);
2377
2378 return 0;
2379 }
2380
2381 static void rocker_free_tbls(struct rocker *rocker)
2382 {
2383 unsigned long flags;
2384 struct rocker_flow_tbl_entry *flow_entry;
2385 struct rocker_group_tbl_entry *group_entry;
2386 struct rocker_fdb_tbl_entry *fdb_entry;
2387 struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2388 struct rocker_neigh_tbl_entry *neigh_entry;
2389 struct hlist_node *tmp;
2390 int bkt;
2391
2392 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2393 hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2394 hash_del(&flow_entry->entry);
2395 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2396
2397 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2398 hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2399 hash_del(&group_entry->entry);
2400 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2401
2402 spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2403 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2404 hash_del(&fdb_entry->entry);
2405 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2406
2407 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2408 hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2409 tmp, internal_vlan_entry, entry)
2410 hash_del(&internal_vlan_entry->entry);
2411 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2412
2413 spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2414 hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2415 hash_del(&neigh_entry->entry);
2416 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2417 }
2418
2419 static struct rocker_flow_tbl_entry *
2420 rocker_flow_tbl_find(const struct rocker *rocker,
2421 const struct rocker_flow_tbl_entry *match)
2422 {
2423 struct rocker_flow_tbl_entry *found;
2424 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2425
2426 hash_for_each_possible(rocker->flow_tbl, found,
2427 entry, match->key_crc32) {
2428 if (memcmp(&found->key, &match->key, key_len) == 0)
2429 return found;
2430 }
2431
2432 return NULL;
2433 }
2434
2435 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2436 enum switchdev_trans trans, int flags,
2437 struct rocker_flow_tbl_entry *match)
2438 {
2439 struct rocker *rocker = rocker_port->rocker;
2440 struct rocker_flow_tbl_entry *found;
2441 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2442 unsigned long lock_flags;
2443
2444 match->key_crc32 = crc32(~0, &match->key, key_len);
2445
2446 spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2447
2448 found = rocker_flow_tbl_find(rocker, match);
2449
2450 if (found) {
2451 match->cookie = found->cookie;
2452 if (trans != SWITCHDEV_TRANS_PREPARE)
2453 hash_del(&found->entry);
2454 rocker_port_kfree(trans, found);
2455 found = match;
2456 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2457 } else {
2458 found = match;
2459 found->cookie = rocker->flow_tbl_next_cookie++;
2460 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2461 }
2462
2463 if (trans != SWITCHDEV_TRANS_PREPARE)
2464 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2465
2466 spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2467
2468 return rocker_cmd_exec(rocker_port, trans, flags,
2469 rocker_cmd_flow_tbl_add, found, NULL, NULL);
2470 }
2471
2472 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2473 enum switchdev_trans trans, int flags,
2474 struct rocker_flow_tbl_entry *match)
2475 {
2476 struct rocker *rocker = rocker_port->rocker;
2477 struct rocker_flow_tbl_entry *found;
2478 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2479 unsigned long lock_flags;
2480 int err = 0;
2481
2482 match->key_crc32 = crc32(~0, &match->key, key_len);
2483
2484 spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2485
2486 found = rocker_flow_tbl_find(rocker, match);
2487
2488 if (found) {
2489 if (trans != SWITCHDEV_TRANS_PREPARE)
2490 hash_del(&found->entry);
2491 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2492 }
2493
2494 spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2495
2496 rocker_port_kfree(trans, match);
2497
2498 if (found) {
2499 err = rocker_cmd_exec(rocker_port, trans, flags,
2500 rocker_cmd_flow_tbl_del,
2501 found, NULL, NULL);
2502 rocker_port_kfree(trans, found);
2503 }
2504
2505 return err;
2506 }
2507
2508 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2509 enum switchdev_trans trans, int flags,
2510 struct rocker_flow_tbl_entry *entry)
2511 {
2512 if (flags & ROCKER_OP_FLAG_REMOVE)
2513 return rocker_flow_tbl_del(rocker_port, trans, flags, entry);
2514 else
2515 return rocker_flow_tbl_add(rocker_port, trans, flags, entry);
2516 }
2517
2518 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2519 enum switchdev_trans trans, int flags,
2520 u32 in_pport, u32 in_pport_mask,
2521 enum rocker_of_dpa_table_id goto_tbl)
2522 {
2523 struct rocker_flow_tbl_entry *entry;
2524
2525 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2526 if (!entry)
2527 return -ENOMEM;
2528
2529 entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2530 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2531 entry->key.ig_port.in_pport = in_pport;
2532 entry->key.ig_port.in_pport_mask = in_pport_mask;
2533 entry->key.ig_port.goto_tbl = goto_tbl;
2534
2535 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2536 }
2537
2538 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2539 enum switchdev_trans trans, int flags,
2540 u32 in_pport, __be16 vlan_id,
2541 __be16 vlan_id_mask,
2542 enum rocker_of_dpa_table_id goto_tbl,
2543 bool untagged, __be16 new_vlan_id)
2544 {
2545 struct rocker_flow_tbl_entry *entry;
2546
2547 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2548 if (!entry)
2549 return -ENOMEM;
2550
2551 entry->key.priority = ROCKER_PRIORITY_VLAN;
2552 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2553 entry->key.vlan.in_pport = in_pport;
2554 entry->key.vlan.vlan_id = vlan_id;
2555 entry->key.vlan.vlan_id_mask = vlan_id_mask;
2556 entry->key.vlan.goto_tbl = goto_tbl;
2557
2558 entry->key.vlan.untagged = untagged;
2559 entry->key.vlan.new_vlan_id = new_vlan_id;
2560
2561 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2562 }
2563
2564 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2565 enum switchdev_trans trans,
2566 u32 in_pport, u32 in_pport_mask,
2567 __be16 eth_type, const u8 *eth_dst,
2568 const u8 *eth_dst_mask, __be16 vlan_id,
2569 __be16 vlan_id_mask, bool copy_to_cpu,
2570 int flags)
2571 {
2572 struct rocker_flow_tbl_entry *entry;
2573
2574 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2575 if (!entry)
2576 return -ENOMEM;
2577
2578 if (is_multicast_ether_addr(eth_dst)) {
2579 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2580 entry->key.term_mac.goto_tbl =
2581 ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2582 } else {
2583 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2584 entry->key.term_mac.goto_tbl =
2585 ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2586 }
2587
2588 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2589 entry->key.term_mac.in_pport = in_pport;
2590 entry->key.term_mac.in_pport_mask = in_pport_mask;
2591 entry->key.term_mac.eth_type = eth_type;
2592 ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2593 ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2594 entry->key.term_mac.vlan_id = vlan_id;
2595 entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2596 entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2597
2598 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2599 }
2600
2601 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2602 enum switchdev_trans trans, int flags,
2603 const u8 *eth_dst, const u8 *eth_dst_mask,
2604 __be16 vlan_id, u32 tunnel_id,
2605 enum rocker_of_dpa_table_id goto_tbl,
2606 u32 group_id, bool copy_to_cpu)
2607 {
2608 struct rocker_flow_tbl_entry *entry;
2609 u32 priority;
2610 bool vlan_bridging = !!vlan_id;
2611 bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2612 bool wild = false;
2613
2614 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2615 if (!entry)
2616 return -ENOMEM;
2617
2618 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2619
2620 if (eth_dst) {
2621 entry->key.bridge.has_eth_dst = 1;
2622 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2623 }
2624 if (eth_dst_mask) {
2625 entry->key.bridge.has_eth_dst_mask = 1;
2626 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2627 if (!ether_addr_equal(eth_dst_mask, ff_mac))
2628 wild = true;
2629 }
2630
2631 priority = ROCKER_PRIORITY_UNKNOWN;
2632 if (vlan_bridging && dflt && wild)
2633 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2634 else if (vlan_bridging && dflt && !wild)
2635 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2636 else if (vlan_bridging && !dflt)
2637 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2638 else if (!vlan_bridging && dflt && wild)
2639 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2640 else if (!vlan_bridging && dflt && !wild)
2641 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2642 else if (!vlan_bridging && !dflt)
2643 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2644
2645 entry->key.priority = priority;
2646 entry->key.bridge.vlan_id = vlan_id;
2647 entry->key.bridge.tunnel_id = tunnel_id;
2648 entry->key.bridge.goto_tbl = goto_tbl;
2649 entry->key.bridge.group_id = group_id;
2650 entry->key.bridge.copy_to_cpu = copy_to_cpu;
2651
2652 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2653 }
2654
2655 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2656 enum switchdev_trans trans,
2657 __be16 eth_type, __be32 dst,
2658 __be32 dst_mask, u32 priority,
2659 enum rocker_of_dpa_table_id goto_tbl,
2660 u32 group_id, int flags)
2661 {
2662 struct rocker_flow_tbl_entry *entry;
2663
2664 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2665 if (!entry)
2666 return -ENOMEM;
2667
2668 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2669 entry->key.priority = priority;
2670 entry->key.ucast_routing.eth_type = eth_type;
2671 entry->key.ucast_routing.dst4 = dst;
2672 entry->key.ucast_routing.dst4_mask = dst_mask;
2673 entry->key.ucast_routing.goto_tbl = goto_tbl;
2674 entry->key.ucast_routing.group_id = group_id;
2675 entry->key_len = offsetof(struct rocker_flow_tbl_key,
2676 ucast_routing.group_id);
2677
2678 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2679 }
2680
2681 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2682 enum switchdev_trans trans, int flags,
2683 u32 in_pport, u32 in_pport_mask,
2684 const u8 *eth_src, const u8 *eth_src_mask,
2685 const u8 *eth_dst, const u8 *eth_dst_mask,
2686 __be16 eth_type, __be16 vlan_id,
2687 __be16 vlan_id_mask, u8 ip_proto,
2688 u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
2689 u32 group_id)
2690 {
2691 u32 priority;
2692 struct rocker_flow_tbl_entry *entry;
2693
2694 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2695 if (!entry)
2696 return -ENOMEM;
2697
2698 priority = ROCKER_PRIORITY_ACL_NORMAL;
2699 if (eth_dst && eth_dst_mask) {
2700 if (ether_addr_equal(eth_dst_mask, mcast_mac))
2701 priority = ROCKER_PRIORITY_ACL_DFLT;
2702 else if (is_link_local_ether_addr(eth_dst))
2703 priority = ROCKER_PRIORITY_ACL_CTRL;
2704 }
2705
2706 entry->key.priority = priority;
2707 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2708 entry->key.acl.in_pport = in_pport;
2709 entry->key.acl.in_pport_mask = in_pport_mask;
2710
2711 if (eth_src)
2712 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2713 if (eth_src_mask)
2714 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2715 if (eth_dst)
2716 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2717 if (eth_dst_mask)
2718 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2719
2720 entry->key.acl.eth_type = eth_type;
2721 entry->key.acl.vlan_id = vlan_id;
2722 entry->key.acl.vlan_id_mask = vlan_id_mask;
2723 entry->key.acl.ip_proto = ip_proto;
2724 entry->key.acl.ip_proto_mask = ip_proto_mask;
2725 entry->key.acl.ip_tos = ip_tos;
2726 entry->key.acl.ip_tos_mask = ip_tos_mask;
2727 entry->key.acl.group_id = group_id;
2728
2729 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2730 }
2731
2732 static struct rocker_group_tbl_entry *
2733 rocker_group_tbl_find(const struct rocker *rocker,
2734 const struct rocker_group_tbl_entry *match)
2735 {
2736 struct rocker_group_tbl_entry *found;
2737
2738 hash_for_each_possible(rocker->group_tbl, found,
2739 entry, match->group_id) {
2740 if (found->group_id == match->group_id)
2741 return found;
2742 }
2743
2744 return NULL;
2745 }
2746
2747 static void rocker_group_tbl_entry_free(enum switchdev_trans trans,
2748 struct rocker_group_tbl_entry *entry)
2749 {
2750 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2751 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2752 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2753 rocker_port_kfree(trans, entry->group_ids);
2754 break;
2755 default:
2756 break;
2757 }
2758 rocker_port_kfree(trans, entry);
2759 }
2760
2761 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2762 enum switchdev_trans trans, int flags,
2763 struct rocker_group_tbl_entry *match)
2764 {
2765 struct rocker *rocker = rocker_port->rocker;
2766 struct rocker_group_tbl_entry *found;
2767 unsigned long lock_flags;
2768
2769 spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2770
2771 found = rocker_group_tbl_find(rocker, match);
2772
2773 if (found) {
2774 if (trans != SWITCHDEV_TRANS_PREPARE)
2775 hash_del(&found->entry);
2776 rocker_group_tbl_entry_free(trans, found);
2777 found = match;
2778 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2779 } else {
2780 found = match;
2781 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2782 }
2783
2784 if (trans != SWITCHDEV_TRANS_PREPARE)
2785 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2786
2787 spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2788
2789 return rocker_cmd_exec(rocker_port, trans, flags,
2790 rocker_cmd_group_tbl_add, found, NULL, NULL);
2791 }
2792
2793 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2794 enum switchdev_trans trans, int flags,
2795 struct rocker_group_tbl_entry *match)
2796 {
2797 struct rocker *rocker = rocker_port->rocker;
2798 struct rocker_group_tbl_entry *found;
2799 unsigned long lock_flags;
2800 int err = 0;
2801
2802 spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2803
2804 found = rocker_group_tbl_find(rocker, match);
2805
2806 if (found) {
2807 if (trans != SWITCHDEV_TRANS_PREPARE)
2808 hash_del(&found->entry);
2809 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2810 }
2811
2812 spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2813
2814 rocker_group_tbl_entry_free(trans, match);
2815
2816 if (found) {
2817 err = rocker_cmd_exec(rocker_port, trans, flags,
2818 rocker_cmd_group_tbl_del,
2819 found, NULL, NULL);
2820 rocker_group_tbl_entry_free(trans, found);
2821 }
2822
2823 return err;
2824 }
2825
2826 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2827 enum switchdev_trans trans, int flags,
2828 struct rocker_group_tbl_entry *entry)
2829 {
2830 if (flags & ROCKER_OP_FLAG_REMOVE)
2831 return rocker_group_tbl_del(rocker_port, trans, flags, entry);
2832 else
2833 return rocker_group_tbl_add(rocker_port, trans, flags, entry);
2834 }
2835
2836 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2837 enum switchdev_trans trans, int flags,
2838 __be16 vlan_id, u32 out_pport,
2839 int pop_vlan)
2840 {
2841 struct rocker_group_tbl_entry *entry;
2842
2843 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2844 if (!entry)
2845 return -ENOMEM;
2846
2847 entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2848 entry->l2_interface.pop_vlan = pop_vlan;
2849
2850 return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2851 }
2852
2853 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2854 enum switchdev_trans trans,
2855 int flags, u8 group_count,
2856 const u32 *group_ids, u32 group_id)
2857 {
2858 struct rocker_group_tbl_entry *entry;
2859
2860 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2861 if (!entry)
2862 return -ENOMEM;
2863
2864 entry->group_id = group_id;
2865 entry->group_count = group_count;
2866
2867 entry->group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
2868 group_count, sizeof(u32));
2869 if (!entry->group_ids) {
2870 rocker_port_kfree(trans, entry);
2871 return -ENOMEM;
2872 }
2873 memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2874
2875 return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2876 }
2877
2878 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2879 enum switchdev_trans trans, int flags,
2880 __be16 vlan_id, u8 group_count,
2881 const u32 *group_ids, u32 group_id)
2882 {
2883 return rocker_group_l2_fan_out(rocker_port, trans, flags,
2884 group_count, group_ids,
2885 group_id);
2886 }
2887
2888 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2889 enum switchdev_trans trans, int flags,
2890 u32 index, const u8 *src_mac, const u8 *dst_mac,
2891 __be16 vlan_id, bool ttl_check, u32 pport)
2892 {
2893 struct rocker_group_tbl_entry *entry;
2894
2895 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2896 if (!entry)
2897 return -ENOMEM;
2898
2899 entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2900 if (src_mac)
2901 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2902 if (dst_mac)
2903 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2904 entry->l3_unicast.vlan_id = vlan_id;
2905 entry->l3_unicast.ttl_check = ttl_check;
2906 entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2907
2908 return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2909 }
2910
2911 static struct rocker_neigh_tbl_entry *
2912 rocker_neigh_tbl_find(const struct rocker *rocker, __be32 ip_addr)
2913 {
2914 struct rocker_neigh_tbl_entry *found;
2915
2916 hash_for_each_possible(rocker->neigh_tbl, found,
2917 entry, be32_to_cpu(ip_addr))
2918 if (found->ip_addr == ip_addr)
2919 return found;
2920
2921 return NULL;
2922 }
2923
2924 static void _rocker_neigh_add(struct rocker *rocker,
2925 enum switchdev_trans trans,
2926 struct rocker_neigh_tbl_entry *entry)
2927 {
2928 if (trans != SWITCHDEV_TRANS_COMMIT)
2929 entry->index = rocker->neigh_tbl_next_index++;
2930 if (trans == SWITCHDEV_TRANS_PREPARE)
2931 return;
2932 entry->ref_count++;
2933 hash_add(rocker->neigh_tbl, &entry->entry,
2934 be32_to_cpu(entry->ip_addr));
2935 }
2936
2937 static void _rocker_neigh_del(enum switchdev_trans trans,
2938 struct rocker_neigh_tbl_entry *entry)
2939 {
2940 if (trans == SWITCHDEV_TRANS_PREPARE)
2941 return;
2942 if (--entry->ref_count == 0) {
2943 hash_del(&entry->entry);
2944 rocker_port_kfree(trans, entry);
2945 }
2946 }
2947
2948 static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
2949 enum switchdev_trans trans,
2950 const u8 *eth_dst, bool ttl_check)
2951 {
2952 if (eth_dst) {
2953 ether_addr_copy(entry->eth_dst, eth_dst);
2954 entry->ttl_check = ttl_check;
2955 } else if (trans != SWITCHDEV_TRANS_PREPARE) {
2956 entry->ref_count++;
2957 }
2958 }
2959
2960 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2961 enum switchdev_trans trans,
2962 int flags, __be32 ip_addr, const u8 *eth_dst)
2963 {
2964 struct rocker *rocker = rocker_port->rocker;
2965 struct rocker_neigh_tbl_entry *entry;
2966 struct rocker_neigh_tbl_entry *found;
2967 unsigned long lock_flags;
2968 __be16 eth_type = htons(ETH_P_IP);
2969 enum rocker_of_dpa_table_id goto_tbl =
2970 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2971 u32 group_id;
2972 u32 priority = 0;
2973 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2974 bool updating;
2975 bool removing;
2976 int err = 0;
2977
2978 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2979 if (!entry)
2980 return -ENOMEM;
2981
2982 spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2983
2984 found = rocker_neigh_tbl_find(rocker, ip_addr);
2985
2986 updating = found && adding;
2987 removing = found && !adding;
2988 adding = !found && adding;
2989
2990 if (adding) {
2991 entry->ip_addr = ip_addr;
2992 entry->dev = rocker_port->dev;
2993 ether_addr_copy(entry->eth_dst, eth_dst);
2994 entry->ttl_check = true;
2995 _rocker_neigh_add(rocker, trans, entry);
2996 } else if (removing) {
2997 memcpy(entry, found, sizeof(*entry));
2998 _rocker_neigh_del(trans, found);
2999 } else if (updating) {
3000 _rocker_neigh_update(found, trans, eth_dst, true);
3001 memcpy(entry, found, sizeof(*entry));
3002 } else {
3003 err = -ENOENT;
3004 }
3005
3006 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3007
3008 if (err)
3009 goto err_out;
3010
3011 /* For each active neighbor, we have an L3 unicast group and
3012 * a /32 route to the neighbor, which uses the L3 unicast
3013 * group. The L3 unicast group can also be referred to by
3014 * other routes' nexthops.
3015 */
3016
3017 err = rocker_group_l3_unicast(rocker_port, trans, flags,
3018 entry->index,
3019 rocker_port->dev->dev_addr,
3020 entry->eth_dst,
3021 rocker_port->internal_vlan_id,
3022 entry->ttl_check,
3023 rocker_port->pport);
3024 if (err) {
3025 netdev_err(rocker_port->dev,
3026 "Error (%d) L3 unicast group index %d\n",
3027 err, entry->index);
3028 goto err_out;
3029 }
3030
3031 if (adding || removing) {
3032 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
3033 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
3034 eth_type, ip_addr,
3035 inet_make_mask(32),
3036 priority, goto_tbl,
3037 group_id, flags);
3038
3039 if (err)
3040 netdev_err(rocker_port->dev,
3041 "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
3042 err, &entry->ip_addr, group_id);
3043 }
3044
3045 err_out:
3046 if (!adding)
3047 rocker_port_kfree(trans, entry);
3048
3049 return err;
3050 }
3051
3052 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
3053 enum switchdev_trans trans, __be32 ip_addr)
3054 {
3055 struct net_device *dev = rocker_port->dev;
3056 struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
3057 int err = 0;
3058
3059 if (!n) {
3060 n = neigh_create(&arp_tbl, &ip_addr, dev);
3061 if (IS_ERR(n))
3062 return IS_ERR(n);
3063 }
3064
3065 /* If the neigh is already resolved, then go ahead and
3066 * install the entry, otherwise start the ARP process to
3067 * resolve the neigh.
3068 */
3069
3070 if (n->nud_state & NUD_VALID)
3071 err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
3072 ip_addr, n->ha);
3073 else
3074 neigh_event_send(n, NULL);
3075
3076 neigh_release(n);
3077 return err;
3078 }
3079
3080 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
3081 enum switchdev_trans trans, int flags,
3082 __be32 ip_addr, u32 *index)
3083 {
3084 struct rocker *rocker = rocker_port->rocker;
3085 struct rocker_neigh_tbl_entry *entry;
3086 struct rocker_neigh_tbl_entry *found;
3087 unsigned long lock_flags;
3088 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3089 bool updating;
3090 bool removing;
3091 bool resolved = true;
3092 int err = 0;
3093
3094 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
3095 if (!entry)
3096 return -ENOMEM;
3097
3098 spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3099
3100 found = rocker_neigh_tbl_find(rocker, ip_addr);
3101 if (found)
3102 *index = found->index;
3103
3104 updating = found && adding;
3105 removing = found && !adding;
3106 adding = !found && adding;
3107
3108 if (adding) {
3109 entry->ip_addr = ip_addr;
3110 entry->dev = rocker_port->dev;
3111 _rocker_neigh_add(rocker, trans, entry);
3112 *index = entry->index;
3113 resolved = false;
3114 } else if (removing) {
3115 _rocker_neigh_del(trans, found);
3116 } else if (updating) {
3117 _rocker_neigh_update(found, trans, NULL, false);
3118 resolved = !is_zero_ether_addr(found->eth_dst);
3119 } else {
3120 err = -ENOENT;
3121 }
3122
3123 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3124
3125 if (!adding)
3126 rocker_port_kfree(trans, entry);
3127
3128 if (err)
3129 return err;
3130
3131 /* Resolved means neigh ip_addr is resolved to neigh mac. */
3132
3133 if (!resolved)
3134 err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
3135
3136 return err;
3137 }
3138
3139 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3140 enum switchdev_trans trans,
3141 int flags, __be16 vlan_id)
3142 {
3143 struct rocker_port *p;
3144 const struct rocker *rocker = rocker_port->rocker;
3145 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3146 u32 *group_ids;
3147 u8 group_count = 0;
3148 int err = 0;
3149 int i;
3150
3151 group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
3152 rocker->port_count, sizeof(u32));
3153 if (!group_ids)
3154 return -ENOMEM;
3155
3156 /* Adjust the flood group for this VLAN. The flood group
3157 * references an L2 interface group for each port in this
3158 * VLAN.
3159 */
3160
3161 for (i = 0; i < rocker->port_count; i++) {
3162 p = rocker->ports[i];
3163 if (!p)
3164 continue;
3165 if (!rocker_port_is_bridged(p))
3166 continue;
3167 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3168 group_ids[group_count++] =
3169 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3170 }
3171 }
3172
3173 /* If there are no bridged ports in this VLAN, we're done */
3174 if (group_count == 0)
3175 goto no_ports_in_vlan;
3176
3177 err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
3178 group_count, group_ids, group_id);
3179 if (err)
3180 netdev_err(rocker_port->dev,
3181 "Error (%d) port VLAN l2 flood group\n", err);
3182
3183 no_ports_in_vlan:
3184 rocker_port_kfree(trans, group_ids);
3185 return err;
3186 }
3187
3188 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3189 enum switchdev_trans trans, int flags,
3190 __be16 vlan_id, bool pop_vlan)
3191 {
3192 const struct rocker *rocker = rocker_port->rocker;
3193 struct rocker_port *p;
3194 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3195 u32 out_pport;
3196 int ref = 0;
3197 int err;
3198 int i;
3199
3200 /* An L2 interface group for this port in this VLAN, but
3201 * only when port STP state is LEARNING|FORWARDING.
3202 */
3203
3204 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3205 rocker_port->stp_state == BR_STATE_FORWARDING) {
3206 out_pport = rocker_port->pport;
3207 err = rocker_group_l2_interface(rocker_port, trans, flags,
3208 vlan_id, out_pport, pop_vlan);
3209 if (err) {
3210 netdev_err(rocker_port->dev,
3211 "Error (%d) port VLAN l2 group for pport %d\n",
3212 err, out_pport);
3213 return err;
3214 }
3215 }
3216
3217 /* An L2 interface group for this VLAN to CPU port.
3218 * Add when first port joins this VLAN and destroy when
3219 * last port leaves this VLAN.
3220 */
3221
3222 for (i = 0; i < rocker->port_count; i++) {
3223 p = rocker->ports[i];
3224 if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
3225 ref++;
3226 }
3227
3228 if ((!adding || ref != 1) && (adding || ref != 0))
3229 return 0;
3230
3231 out_pport = 0;
3232 err = rocker_group_l2_interface(rocker_port, trans, flags,
3233 vlan_id, out_pport, pop_vlan);
3234 if (err) {
3235 netdev_err(rocker_port->dev,
3236 "Error (%d) port VLAN l2 group for CPU port\n", err);
3237 return err;
3238 }
3239
3240 return 0;
3241 }
3242
3243 static struct rocker_ctrl {
3244 const u8 *eth_dst;
3245 const u8 *eth_dst_mask;
3246 __be16 eth_type;
3247 bool acl;
3248 bool bridge;
3249 bool term;
3250 bool copy_to_cpu;
3251 } rocker_ctrls[] = {
3252 [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3253 /* pass link local multicast pkts up to CPU for filtering */
3254 .eth_dst = ll_mac,
3255 .eth_dst_mask = ll_mask,
3256 .acl = true,
3257 },
3258 [ROCKER_CTRL_LOCAL_ARP] = {
3259 /* pass local ARP pkts up to CPU */
3260 .eth_dst = zero_mac,
3261 .eth_dst_mask = zero_mac,
3262 .eth_type = htons(ETH_P_ARP),
3263 .acl = true,
3264 },
3265 [ROCKER_CTRL_IPV4_MCAST] = {
3266 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3267 .eth_dst = ipv4_mcast,
3268 .eth_dst_mask = ipv4_mask,
3269 .eth_type = htons(ETH_P_IP),
3270 .term = true,
3271 .copy_to_cpu = true,
3272 },
3273 [ROCKER_CTRL_IPV6_MCAST] = {
3274 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3275 .eth_dst = ipv6_mcast,
3276 .eth_dst_mask = ipv6_mask,
3277 .eth_type = htons(ETH_P_IPV6),
3278 .term = true,
3279 .copy_to_cpu = true,
3280 },
3281 [ROCKER_CTRL_DFLT_BRIDGING] = {
3282 /* flood any pkts on vlan */
3283 .bridge = true,
3284 .copy_to_cpu = true,
3285 },
3286 [ROCKER_CTRL_DFLT_OVS] = {
3287 /* pass all pkts up to CPU */
3288 .eth_dst = zero_mac,
3289 .eth_dst_mask = zero_mac,
3290 .acl = true,
3291 },
3292 };
3293
3294 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3295 enum switchdev_trans trans, int flags,
3296 const struct rocker_ctrl *ctrl, __be16 vlan_id)
3297 {
3298 u32 in_pport = rocker_port->pport;
3299 u32 in_pport_mask = 0xffffffff;
3300 u32 out_pport = 0;
3301 const u8 *eth_src = NULL;
3302 const u8 *eth_src_mask = NULL;
3303 __be16 vlan_id_mask = htons(0xffff);
3304 u8 ip_proto = 0;
3305 u8 ip_proto_mask = 0;
3306 u8 ip_tos = 0;
3307 u8 ip_tos_mask = 0;
3308 u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3309 int err;
3310
3311 err = rocker_flow_tbl_acl(rocker_port, trans, flags,
3312 in_pport, in_pport_mask,
3313 eth_src, eth_src_mask,
3314 ctrl->eth_dst, ctrl->eth_dst_mask,
3315 ctrl->eth_type,
3316 vlan_id, vlan_id_mask,
3317 ip_proto, ip_proto_mask,
3318 ip_tos, ip_tos_mask,
3319 group_id);
3320
3321 if (err)
3322 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3323
3324 return err;
3325 }
3326
3327 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3328 enum switchdev_trans trans, int flags,
3329 const struct rocker_ctrl *ctrl,
3330 __be16 vlan_id)
3331 {
3332 enum rocker_of_dpa_table_id goto_tbl =
3333 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3334 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3335 u32 tunnel_id = 0;
3336 int err;
3337
3338 if (!rocker_port_is_bridged(rocker_port))
3339 return 0;
3340
3341 err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
3342 ctrl->eth_dst, ctrl->eth_dst_mask,
3343 vlan_id, tunnel_id,
3344 goto_tbl, group_id, ctrl->copy_to_cpu);
3345
3346 if (err)
3347 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3348
3349 return err;
3350 }
3351
3352 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3353 enum switchdev_trans trans, int flags,
3354 const struct rocker_ctrl *ctrl, __be16 vlan_id)
3355 {
3356 u32 in_pport_mask = 0xffffffff;
3357 __be16 vlan_id_mask = htons(0xffff);
3358 int err;
3359
3360 if (ntohs(vlan_id) == 0)
3361 vlan_id = rocker_port->internal_vlan_id;
3362
3363 err = rocker_flow_tbl_term_mac(rocker_port, trans,
3364 rocker_port->pport, in_pport_mask,
3365 ctrl->eth_type, ctrl->eth_dst,
3366 ctrl->eth_dst_mask, vlan_id,
3367 vlan_id_mask, ctrl->copy_to_cpu,
3368 flags);
3369
3370 if (err)
3371 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3372
3373 return err;
3374 }
3375
3376 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
3377 enum switchdev_trans trans, int flags,
3378 const struct rocker_ctrl *ctrl, __be16 vlan_id)
3379 {
3380 if (ctrl->acl)
3381 return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
3382 ctrl, vlan_id);
3383 if (ctrl->bridge)
3384 return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
3385 ctrl, vlan_id);
3386
3387 if (ctrl->term)
3388 return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
3389 ctrl, vlan_id);
3390
3391 return -EOPNOTSUPP;
3392 }
3393
3394 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3395 enum switchdev_trans trans, int flags,
3396 __be16 vlan_id)
3397 {
3398 int err = 0;
3399 int i;
3400
3401 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3402 if (rocker_port->ctrls[i]) {
3403 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3404 &rocker_ctrls[i], vlan_id);
3405 if (err)
3406 return err;
3407 }
3408 }
3409
3410 return err;
3411 }
3412
3413 static int rocker_port_ctrl(struct rocker_port *rocker_port,
3414 enum switchdev_trans trans, int flags,
3415 const struct rocker_ctrl *ctrl)
3416 {
3417 u16 vid;
3418 int err = 0;
3419
3420 for (vid = 1; vid < VLAN_N_VID; vid++) {
3421 if (!test_bit(vid, rocker_port->vlan_bitmap))
3422 continue;
3423 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3424 ctrl, htons(vid));
3425 if (err)
3426 break;
3427 }
3428
3429 return err;
3430 }
3431
3432 static int rocker_port_vlan(struct rocker_port *rocker_port,
3433 enum switchdev_trans trans, int flags, u16 vid)
3434 {
3435 enum rocker_of_dpa_table_id goto_tbl =
3436 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3437 u32 in_pport = rocker_port->pport;
3438 __be16 vlan_id = htons(vid);
3439 __be16 vlan_id_mask = htons(0xffff);
3440 __be16 internal_vlan_id;
3441 bool untagged;
3442 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3443 int err;
3444
3445 internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3446
3447 if (adding && test_bit(ntohs(internal_vlan_id),
3448 rocker_port->vlan_bitmap))
3449 return 0; /* already added */
3450 else if (!adding && !test_bit(ntohs(internal_vlan_id),
3451 rocker_port->vlan_bitmap))
3452 return 0; /* already removed */
3453
3454 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3455
3456 if (adding) {
3457 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3458 internal_vlan_id);
3459 if (err) {
3460 netdev_err(rocker_port->dev,
3461 "Error (%d) port ctrl vlan add\n", err);
3462 goto err_out;
3463 }
3464 }
3465
3466 err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3467 internal_vlan_id, untagged);
3468 if (err) {
3469 netdev_err(rocker_port->dev,
3470 "Error (%d) port VLAN l2 groups\n", err);
3471 goto err_out;
3472 }
3473
3474 err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3475 internal_vlan_id);
3476 if (err) {
3477 netdev_err(rocker_port->dev,
3478 "Error (%d) port VLAN l2 flood group\n", err);
3479 goto err_out;
3480 }
3481
3482 err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3483 in_pport, vlan_id, vlan_id_mask,
3484 goto_tbl, untagged, internal_vlan_id);
3485 if (err)
3486 netdev_err(rocker_port->dev,
3487 "Error (%d) port VLAN table\n", err);
3488
3489 err_out:
3490 if (trans == SWITCHDEV_TRANS_PREPARE)
3491 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3492
3493 return err;
3494 }
3495
3496 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3497 enum switchdev_trans trans, int flags)
3498 {
3499 enum rocker_of_dpa_table_id goto_tbl;
3500 u32 in_pport;
3501 u32 in_pport_mask;
3502 int err;
3503
3504 /* Normal Ethernet Frames. Matches pkts from any local physical
3505 * ports. Goto VLAN tbl.
3506 */
3507
3508 in_pport = 0;
3509 in_pport_mask = 0xffff0000;
3510 goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3511
3512 err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3513 in_pport, in_pport_mask,
3514 goto_tbl);
3515 if (err)
3516 netdev_err(rocker_port->dev,
3517 "Error (%d) ingress port table entry\n", err);
3518
3519 return err;
3520 }
3521
3522 struct rocker_fdb_learn_work {
3523 struct work_struct work;
3524 struct rocker_port *rocker_port;
3525 enum switchdev_trans trans;
3526 int flags;
3527 u8 addr[ETH_ALEN];
3528 u16 vid;
3529 };
3530
3531 static void rocker_port_fdb_learn_work(struct work_struct *work)
3532 {
3533 const struct rocker_fdb_learn_work *lw =
3534 container_of(work, struct rocker_fdb_learn_work, work);
3535 bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3536 bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3537 struct switchdev_notifier_fdb_info info;
3538
3539 info.addr = lw->addr;
3540 info.vid = lw->vid;
3541
3542 if (learned && removing)
3543 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3544 lw->rocker_port->dev, &info.info);
3545 else if (learned && !removing)
3546 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3547 lw->rocker_port->dev, &info.info);
3548
3549 rocker_port_kfree(lw->trans, work);
3550 }
3551
3552 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3553 enum switchdev_trans trans, int flags,
3554 const u8 *addr, __be16 vlan_id)
3555 {
3556 struct rocker_fdb_learn_work *lw;
3557 enum rocker_of_dpa_table_id goto_tbl =
3558 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3559 u32 out_pport = rocker_port->pport;
3560 u32 tunnel_id = 0;
3561 u32 group_id = ROCKER_GROUP_NONE;
3562 bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3563 bool copy_to_cpu = false;
3564 int err;
3565
3566 if (rocker_port_is_bridged(rocker_port))
3567 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3568
3569 if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3570 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3571 NULL, vlan_id, tunnel_id, goto_tbl,
3572 group_id, copy_to_cpu);
3573 if (err)
3574 return err;
3575 }
3576
3577 if (!syncing)
3578 return 0;
3579
3580 if (!rocker_port_is_bridged(rocker_port))
3581 return 0;
3582
3583 lw = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*lw));
3584 if (!lw)
3585 return -ENOMEM;
3586
3587 INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3588
3589 lw->rocker_port = rocker_port;
3590 lw->trans = trans;
3591 lw->flags = flags;
3592 ether_addr_copy(lw->addr, addr);
3593 lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3594
3595 if (trans == SWITCHDEV_TRANS_PREPARE)
3596 rocker_port_kfree(trans, lw);
3597 else
3598 schedule_work(&lw->work);
3599
3600 return 0;
3601 }
3602
3603 static struct rocker_fdb_tbl_entry *
3604 rocker_fdb_tbl_find(const struct rocker *rocker,
3605 const struct rocker_fdb_tbl_entry *match)
3606 {
3607 struct rocker_fdb_tbl_entry *found;
3608
3609 hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3610 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3611 return found;
3612
3613 return NULL;
3614 }
3615
3616 static int rocker_port_fdb(struct rocker_port *rocker_port,
3617 enum switchdev_trans trans,
3618 const unsigned char *addr,
3619 __be16 vlan_id, int flags)
3620 {
3621 struct rocker *rocker = rocker_port->rocker;
3622 struct rocker_fdb_tbl_entry *fdb;
3623 struct rocker_fdb_tbl_entry *found;
3624 bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3625 unsigned long lock_flags;
3626
3627 fdb = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*fdb));
3628 if (!fdb)
3629 return -ENOMEM;
3630
3631 fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3632 fdb->key.pport = rocker_port->pport;
3633 ether_addr_copy(fdb->key.addr, addr);
3634 fdb->key.vlan_id = vlan_id;
3635 fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3636
3637 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3638
3639 found = rocker_fdb_tbl_find(rocker, fdb);
3640
3641 if (removing && found) {
3642 rocker_port_kfree(trans, fdb);
3643 if (trans != SWITCHDEV_TRANS_PREPARE)
3644 hash_del(&found->entry);
3645 } else if (!removing && !found) {
3646 if (trans != SWITCHDEV_TRANS_PREPARE)
3647 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3648 }
3649
3650 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3651
3652 /* Check if adding and already exists, or removing and can't find */
3653 if (!found != !removing) {
3654 rocker_port_kfree(trans, fdb);
3655 if (!found && removing)
3656 return 0;
3657 /* Refreshing existing to update aging timers */
3658 flags |= ROCKER_OP_FLAG_REFRESH;
3659 }
3660
3661 return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3662 }
3663
3664 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3665 enum switchdev_trans trans, int flags)
3666 {
3667 struct rocker *rocker = rocker_port->rocker;
3668 struct rocker_fdb_tbl_entry *found;
3669 unsigned long lock_flags;
3670 struct hlist_node *tmp;
3671 int bkt;
3672 int err = 0;
3673
3674 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3675 rocker_port->stp_state == BR_STATE_FORWARDING)
3676 return 0;
3677
3678 flags |= ROCKER_OP_FLAG_REMOVE;
3679
3680 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3681
3682 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3683 if (found->key.pport != rocker_port->pport)
3684 continue;
3685 if (!found->learned)
3686 continue;
3687 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3688 found->key.addr,
3689 found->key.vlan_id);
3690 if (err)
3691 goto err_out;
3692 if (trans != SWITCHDEV_TRANS_PREPARE)
3693 hash_del(&found->entry);
3694 }
3695
3696 err_out:
3697 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3698
3699 return err;
3700 }
3701
3702 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3703 enum switchdev_trans trans, int flags,
3704 __be16 vlan_id)
3705 {
3706 u32 in_pport_mask = 0xffffffff;
3707 __be16 eth_type;
3708 const u8 *dst_mac_mask = ff_mac;
3709 __be16 vlan_id_mask = htons(0xffff);
3710 bool copy_to_cpu = false;
3711 int err;
3712
3713 if (ntohs(vlan_id) == 0)
3714 vlan_id = rocker_port->internal_vlan_id;
3715
3716 eth_type = htons(ETH_P_IP);
3717 err = rocker_flow_tbl_term_mac(rocker_port, trans,
3718 rocker_port->pport, in_pport_mask,
3719 eth_type, rocker_port->dev->dev_addr,
3720 dst_mac_mask, vlan_id, vlan_id_mask,
3721 copy_to_cpu, flags);
3722 if (err)
3723 return err;
3724
3725 eth_type = htons(ETH_P_IPV6);
3726 err = rocker_flow_tbl_term_mac(rocker_port, trans,
3727 rocker_port->pport, in_pport_mask,
3728 eth_type, rocker_port->dev->dev_addr,
3729 dst_mac_mask, vlan_id, vlan_id_mask,
3730 copy_to_cpu, flags);
3731
3732 return err;
3733 }
3734
3735 static int rocker_port_fwding(struct rocker_port *rocker_port,
3736 enum switchdev_trans trans, int flags)
3737 {
3738 bool pop_vlan;
3739 u32 out_pport;
3740 __be16 vlan_id;
3741 u16 vid;
3742 int err;
3743
3744 /* Port will be forwarding-enabled if its STP state is LEARNING
3745 * or FORWARDING. Traffic from CPU can still egress, regardless of
3746 * port STP state. Use L2 interface group on port VLANs as a way
3747 * to toggle port forwarding: if forwarding is disabled, L2
3748 * interface group will not exist.
3749 */
3750
3751 if (rocker_port->stp_state != BR_STATE_LEARNING &&
3752 rocker_port->stp_state != BR_STATE_FORWARDING)
3753 flags |= ROCKER_OP_FLAG_REMOVE;
3754
3755 out_pport = rocker_port->pport;
3756 for (vid = 1; vid < VLAN_N_VID; vid++) {
3757 if (!test_bit(vid, rocker_port->vlan_bitmap))
3758 continue;
3759 vlan_id = htons(vid);
3760 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3761 err = rocker_group_l2_interface(rocker_port, trans, flags,
3762 vlan_id, out_pport, pop_vlan);
3763 if (err) {
3764 netdev_err(rocker_port->dev,
3765 "Error (%d) port VLAN l2 group for pport %d\n",
3766 err, out_pport);
3767 return err;
3768 }
3769 }
3770
3771 return 0;
3772 }
3773
3774 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3775 enum switchdev_trans trans, int flags,
3776 u8 state)
3777 {
3778 bool want[ROCKER_CTRL_MAX] = { 0, };
3779 bool prev_ctrls[ROCKER_CTRL_MAX];
3780 u8 prev_state;
3781 int err;
3782 int i;
3783
3784 if (trans == SWITCHDEV_TRANS_PREPARE) {
3785 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3786 prev_state = rocker_port->stp_state;
3787 }
3788
3789 if (rocker_port->stp_state == state)
3790 return 0;
3791
3792 rocker_port->stp_state = state;
3793
3794 switch (state) {
3795 case BR_STATE_DISABLED:
3796 /* port is completely disabled */
3797 break;
3798 case BR_STATE_LISTENING:
3799 case BR_STATE_BLOCKING:
3800 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3801 break;
3802 case BR_STATE_LEARNING:
3803 case BR_STATE_FORWARDING:
3804 if (!rocker_port_is_ovsed(rocker_port))
3805 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3806 want[ROCKER_CTRL_IPV4_MCAST] = true;
3807 want[ROCKER_CTRL_IPV6_MCAST] = true;
3808 if (rocker_port_is_bridged(rocker_port))
3809 want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3810 else if (rocker_port_is_ovsed(rocker_port))
3811 want[ROCKER_CTRL_DFLT_OVS] = true;
3812 else
3813 want[ROCKER_CTRL_LOCAL_ARP] = true;
3814 break;
3815 }
3816
3817 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3818 if (want[i] != rocker_port->ctrls[i]) {
3819 int ctrl_flags = flags |
3820 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3821 err = rocker_port_ctrl(rocker_port, trans, ctrl_flags,
3822 &rocker_ctrls[i]);
3823 if (err)
3824 goto err_out;
3825 rocker_port->ctrls[i] = want[i];
3826 }
3827 }
3828
3829 err = rocker_port_fdb_flush(rocker_port, trans, flags);
3830 if (err)
3831 goto err_out;
3832
3833 err = rocker_port_fwding(rocker_port, trans, flags);
3834
3835 err_out:
3836 if (trans == SWITCHDEV_TRANS_PREPARE) {
3837 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3838 rocker_port->stp_state = prev_state;
3839 }
3840
3841 return err;
3842 }
3843
3844 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
3845 enum switchdev_trans trans, int flags)
3846 {
3847 if (rocker_port_is_bridged(rocker_port))
3848 /* bridge STP will enable port */
3849 return 0;
3850
3851 /* port is not bridged, so simulate going to FORWARDING state */
3852 return rocker_port_stp_update(rocker_port, trans, flags,
3853 BR_STATE_FORWARDING);
3854 }
3855
3856 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
3857 enum switchdev_trans trans, int flags)
3858 {
3859 if (rocker_port_is_bridged(rocker_port))
3860 /* bridge STP will disable port */
3861 return 0;
3862
3863 /* port is not bridged, so simulate going to DISABLED state */
3864 return rocker_port_stp_update(rocker_port, trans, flags,
3865 BR_STATE_DISABLED);
3866 }
3867
3868 static struct rocker_internal_vlan_tbl_entry *
3869 rocker_internal_vlan_tbl_find(const struct rocker *rocker, int ifindex)
3870 {
3871 struct rocker_internal_vlan_tbl_entry *found;
3872
3873 hash_for_each_possible(rocker->internal_vlan_tbl, found,
3874 entry, ifindex) {
3875 if (found->ifindex == ifindex)
3876 return found;
3877 }
3878
3879 return NULL;
3880 }
3881
3882 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3883 int ifindex)
3884 {
3885 struct rocker *rocker = rocker_port->rocker;
3886 struct rocker_internal_vlan_tbl_entry *entry;
3887 struct rocker_internal_vlan_tbl_entry *found;
3888 unsigned long lock_flags;
3889 int i;
3890
3891 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3892 if (!entry)
3893 return 0;
3894
3895 entry->ifindex = ifindex;
3896
3897 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3898
3899 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3900 if (found) {
3901 kfree(entry);
3902 goto found;
3903 }
3904
3905 found = entry;
3906 hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3907
3908 for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3909 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3910 continue;
3911 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3912 goto found;
3913 }
3914
3915 netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3916
3917 found:
3918 found->ref_count++;
3919 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3920
3921 return found->vlan_id;
3922 }
3923
3924 static void
3925 rocker_port_internal_vlan_id_put(const struct rocker_port *rocker_port,
3926 int ifindex)
3927 {
3928 struct rocker *rocker = rocker_port->rocker;
3929 struct rocker_internal_vlan_tbl_entry *found;
3930 unsigned long lock_flags;
3931 unsigned long bit;
3932
3933 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3934
3935 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3936 if (!found) {
3937 netdev_err(rocker_port->dev,
3938 "ifindex (%d) not found in internal VLAN tbl\n",
3939 ifindex);
3940 goto not_found;
3941 }
3942
3943 if (--found->ref_count <= 0) {
3944 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3945 clear_bit(bit, rocker->internal_vlan_bitmap);
3946 hash_del(&found->entry);
3947 kfree(found);
3948 }
3949
3950 not_found:
3951 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3952 }
3953
3954 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
3955 enum switchdev_trans trans, __be32 dst,
3956 int dst_len, const struct fib_info *fi,
3957 u32 tb_id, int flags)
3958 {
3959 const struct fib_nh *nh;
3960 __be16 eth_type = htons(ETH_P_IP);
3961 __be32 dst_mask = inet_make_mask(dst_len);
3962 __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3963 u32 priority = fi->fib_priority;
3964 enum rocker_of_dpa_table_id goto_tbl =
3965 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3966 u32 group_id;
3967 bool nh_on_port;
3968 bool has_gw;
3969 u32 index;
3970 int err;
3971
3972 /* XXX support ECMP */
3973
3974 nh = fi->fib_nh;
3975 nh_on_port = (fi->fib_dev == rocker_port->dev);
3976 has_gw = !!nh->nh_gw;
3977
3978 if (has_gw && nh_on_port) {
3979 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
3980 nh->nh_gw, &index);
3981 if (err)
3982 return err;
3983
3984 group_id = ROCKER_GROUP_L3_UNICAST(index);
3985 } else {
3986 /* Send to CPU for processing */
3987 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3988 }
3989
3990 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
3991 dst_mask, priority, goto_tbl,
3992 group_id, flags);
3993 if (err)
3994 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3995 err, &dst);
3996
3997 return err;
3998 }
3999
4000 /*****************
4001 * Net device ops
4002 *****************/
4003
4004 static int rocker_port_open(struct net_device *dev)
4005 {
4006 struct rocker_port *rocker_port = netdev_priv(dev);
4007 int err;
4008
4009 err = rocker_port_dma_rings_init(rocker_port);
4010 if (err)
4011 return err;
4012
4013 err = request_irq(rocker_msix_tx_vector(rocker_port),
4014 rocker_tx_irq_handler, 0,
4015 rocker_driver_name, rocker_port);
4016 if (err) {
4017 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
4018 goto err_request_tx_irq;
4019 }
4020
4021 err = request_irq(rocker_msix_rx_vector(rocker_port),
4022 rocker_rx_irq_handler, 0,
4023 rocker_driver_name, rocker_port);
4024 if (err) {
4025 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
4026 goto err_request_rx_irq;
4027 }
4028
4029 err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE, 0);
4030 if (err)
4031 goto err_fwd_enable;
4032
4033 napi_enable(&rocker_port->napi_tx);
4034 napi_enable(&rocker_port->napi_rx);
4035 if (!dev->proto_down)
4036 rocker_port_set_enable(rocker_port, true);
4037 netif_start_queue(dev);
4038 return 0;
4039
4040 err_fwd_enable:
4041 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4042 err_request_rx_irq:
4043 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4044 err_request_tx_irq:
4045 rocker_port_dma_rings_fini(rocker_port);
4046 return err;
4047 }
4048
4049 static int rocker_port_stop(struct net_device *dev)
4050 {
4051 struct rocker_port *rocker_port = netdev_priv(dev);
4052
4053 netif_stop_queue(dev);
4054 rocker_port_set_enable(rocker_port, false);
4055 napi_disable(&rocker_port->napi_rx);
4056 napi_disable(&rocker_port->napi_tx);
4057 rocker_port_fwd_disable(rocker_port, SWITCHDEV_TRANS_NONE,
4058 ROCKER_OP_FLAG_NOWAIT);
4059 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4060 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4061 rocker_port_dma_rings_fini(rocker_port);
4062
4063 return 0;
4064 }
4065
4066 static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port,
4067 const struct rocker_desc_info *desc_info)
4068 {
4069 const struct rocker *rocker = rocker_port->rocker;
4070 struct pci_dev *pdev = rocker->pdev;
4071 const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4072 struct rocker_tlv *attr;
4073 int rem;
4074
4075 rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4076 if (!attrs[ROCKER_TLV_TX_FRAGS])
4077 return;
4078 rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4079 const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4080 dma_addr_t dma_handle;
4081 size_t len;
4082
4083 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4084 continue;
4085 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4086 attr);
4087 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4088 !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4089 continue;
4090 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4091 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4092 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4093 }
4094 }
4095
4096 static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port,
4097 struct rocker_desc_info *desc_info,
4098 char *buf, size_t buf_len)
4099 {
4100 const struct rocker *rocker = rocker_port->rocker;
4101 struct pci_dev *pdev = rocker->pdev;
4102 dma_addr_t dma_handle;
4103 struct rocker_tlv *frag;
4104
4105 dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4106 if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4107 if (net_ratelimit())
4108 netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4109 return -EIO;
4110 }
4111 frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4112 if (!frag)
4113 goto unmap_frag;
4114 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4115 dma_handle))
4116 goto nest_cancel;
4117 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4118 buf_len))
4119 goto nest_cancel;
4120 rocker_tlv_nest_end(desc_info, frag);
4121 return 0;
4122
4123 nest_cancel:
4124 rocker_tlv_nest_cancel(desc_info, frag);
4125 unmap_frag:
4126 pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4127 return -EMSGSIZE;
4128 }
4129
4130 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4131 {
4132 struct rocker_port *rocker_port = netdev_priv(dev);
4133 struct rocker *rocker = rocker_port->rocker;
4134 struct rocker_desc_info *desc_info;
4135 struct rocker_tlv *frags;
4136 int i;
4137 int err;
4138
4139 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4140 if (unlikely(!desc_info)) {
4141 if (net_ratelimit())
4142 netdev_err(dev, "tx ring full when queue awake\n");
4143 return NETDEV_TX_BUSY;
4144 }
4145
4146 rocker_desc_cookie_ptr_set(desc_info, skb);
4147
4148 frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4149 if (!frags)
4150 goto out;
4151 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4152 skb->data, skb_headlen(skb));
4153 if (err)
4154 goto nest_cancel;
4155 if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) {
4156 err = skb_linearize(skb);
4157 if (err)
4158 goto unmap_frags;
4159 }
4160
4161 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4162 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4163
4164 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4165 skb_frag_address(frag),
4166 skb_frag_size(frag));
4167 if (err)
4168 goto unmap_frags;
4169 }
4170 rocker_tlv_nest_end(desc_info, frags);
4171
4172 rocker_desc_gen_clear(desc_info);
4173 rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4174
4175 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4176 if (!desc_info)
4177 netif_stop_queue(dev);
4178
4179 return NETDEV_TX_OK;
4180
4181 unmap_frags:
4182 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4183 nest_cancel:
4184 rocker_tlv_nest_cancel(desc_info, frags);
4185 out:
4186 dev_kfree_skb(skb);
4187 dev->stats.tx_dropped++;
4188
4189 return NETDEV_TX_OK;
4190 }
4191
4192 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4193 {
4194 struct sockaddr *addr = p;
4195 struct rocker_port *rocker_port = netdev_priv(dev);
4196 int err;
4197
4198 if (!is_valid_ether_addr(addr->sa_data))
4199 return -EADDRNOTAVAIL;
4200
4201 err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4202 if (err)
4203 return err;
4204 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4205 return 0;
4206 }
4207
4208 static int rocker_port_change_mtu(struct net_device *dev, int new_mtu)
4209 {
4210 struct rocker_port *rocker_port = netdev_priv(dev);
4211 int running = netif_running(dev);
4212 int err;
4213
4214 #define ROCKER_PORT_MIN_MTU 68
4215 #define ROCKER_PORT_MAX_MTU 9000
4216
4217 if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU)
4218 return -EINVAL;
4219
4220 if (running)
4221 rocker_port_stop(dev);
4222
4223 netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu);
4224 dev->mtu = new_mtu;
4225
4226 err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu);
4227 if (err)
4228 return err;
4229
4230 if (running)
4231 err = rocker_port_open(dev);
4232
4233 return err;
4234 }
4235
4236 static int rocker_port_get_phys_port_name(struct net_device *dev,
4237 char *buf, size_t len)
4238 {
4239 struct rocker_port *rocker_port = netdev_priv(dev);
4240 struct port_name name = { .buf = buf, .len = len };
4241 int err;
4242
4243 err = rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
4244 rocker_cmd_get_port_settings_prep, NULL,
4245 rocker_cmd_get_port_settings_phys_name_proc,
4246 &name);
4247
4248 return err ? -EOPNOTSUPP : 0;
4249 }
4250
4251 static int rocker_port_change_proto_down(struct net_device *dev,
4252 bool proto_down)
4253 {
4254 struct rocker_port *rocker_port = netdev_priv(dev);
4255
4256 if (rocker_port->dev->flags & IFF_UP)
4257 rocker_port_set_enable(rocker_port, !proto_down);
4258 rocker_port->dev->proto_down = proto_down;
4259 return 0;
4260 }
4261
4262 static void rocker_port_neigh_destroy(struct neighbour *n)
4263 {
4264 struct rocker_port *rocker_port = netdev_priv(n->dev);
4265 int flags = ROCKER_OP_FLAG_REMOVE | ROCKER_OP_FLAG_NOWAIT;
4266 __be32 ip_addr = *(__be32 *)n->primary_key;
4267
4268 rocker_port_ipv4_neigh(rocker_port, SWITCHDEV_TRANS_NONE,
4269 flags, ip_addr, n->ha);
4270 }
4271
4272 static const struct net_device_ops rocker_port_netdev_ops = {
4273 .ndo_open = rocker_port_open,
4274 .ndo_stop = rocker_port_stop,
4275 .ndo_start_xmit = rocker_port_xmit,
4276 .ndo_set_mac_address = rocker_port_set_mac_address,
4277 .ndo_change_mtu = rocker_port_change_mtu,
4278 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
4279 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
4280 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
4281 .ndo_fdb_add = switchdev_port_fdb_add,
4282 .ndo_fdb_del = switchdev_port_fdb_del,
4283 .ndo_fdb_dump = switchdev_port_fdb_dump,
4284 .ndo_get_phys_port_name = rocker_port_get_phys_port_name,
4285 .ndo_change_proto_down = rocker_port_change_proto_down,
4286 .ndo_neigh_destroy = rocker_port_neigh_destroy,
4287 };
4288
4289 /********************
4290 * swdev interface
4291 ********************/
4292
4293 static int rocker_port_attr_get(struct net_device *dev,
4294 struct switchdev_attr *attr)
4295 {
4296 const struct rocker_port *rocker_port = netdev_priv(dev);
4297 const struct rocker *rocker = rocker_port->rocker;
4298
4299 switch (attr->id) {
4300 case SWITCHDEV_ATTR_PORT_PARENT_ID:
4301 attr->u.ppid.id_len = sizeof(rocker->hw.id);
4302 memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
4303 break;
4304 case SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS:
4305 attr->u.brport_flags = rocker_port->brport_flags;
4306 break;
4307 default:
4308 return -EOPNOTSUPP;
4309 }
4310
4311 return 0;
4312 }
4313
4314 static void rocker_port_trans_abort(const struct rocker_port *rocker_port)
4315 {
4316 struct list_head *mem, *tmp;
4317
4318 list_for_each_safe(mem, tmp, &rocker_port->trans_mem) {
4319 list_del(mem);
4320 kfree(mem);
4321 }
4322 }
4323
4324 static int rocker_port_brport_flags_set(struct rocker_port *rocker_port,
4325 enum switchdev_trans trans,
4326 unsigned long brport_flags)
4327 {
4328 unsigned long orig_flags;
4329 int err = 0;
4330
4331 orig_flags = rocker_port->brport_flags;
4332 rocker_port->brport_flags = brport_flags;
4333 if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING)
4334 err = rocker_port_set_learning(rocker_port, trans);
4335
4336 if (trans == SWITCHDEV_TRANS_PREPARE)
4337 rocker_port->brport_flags = orig_flags;
4338
4339 return err;
4340 }
4341
4342 static int rocker_port_attr_set(struct net_device *dev,
4343 struct switchdev_attr *attr)
4344 {
4345 struct rocker_port *rocker_port = netdev_priv(dev);
4346 int err = 0;
4347
4348 switch (attr->trans) {
4349 case SWITCHDEV_TRANS_PREPARE:
4350 BUG_ON(!list_empty(&rocker_port->trans_mem));
4351 break;
4352 case SWITCHDEV_TRANS_ABORT:
4353 rocker_port_trans_abort(rocker_port);
4354 return 0;
4355 default:
4356 break;
4357 }
4358
4359 switch (attr->id) {
4360 case SWITCHDEV_ATTR_PORT_STP_STATE:
4361 err = rocker_port_stp_update(rocker_port, attr->trans,
4362 ROCKER_OP_FLAG_NOWAIT,
4363 attr->u.stp_state);
4364 break;
4365 case SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS:
4366 err = rocker_port_brport_flags_set(rocker_port, attr->trans,
4367 attr->u.brport_flags);
4368 break;
4369 default:
4370 err = -EOPNOTSUPP;
4371 break;
4372 }
4373
4374 return err;
4375 }
4376
4377 static int rocker_port_vlan_add(struct rocker_port *rocker_port,
4378 enum switchdev_trans trans, u16 vid, u16 flags)
4379 {
4380 int err;
4381
4382 /* XXX deal with flags for PVID and untagged */
4383
4384 err = rocker_port_vlan(rocker_port, trans, 0, vid);
4385 if (err)
4386 return err;
4387
4388 err = rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
4389 if (err)
4390 rocker_port_vlan(rocker_port, trans,
4391 ROCKER_OP_FLAG_REMOVE, vid);
4392
4393 return err;
4394 }
4395
4396 static int rocker_port_vlans_add(struct rocker_port *rocker_port,
4397 enum switchdev_trans trans,
4398 const struct switchdev_obj_vlan *vlan)
4399 {
4400 u16 vid;
4401 int err;
4402
4403 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4404 err = rocker_port_vlan_add(rocker_port, trans,
4405 vid, vlan->flags);
4406 if (err)
4407 return err;
4408 }
4409
4410 return 0;
4411 }
4412
4413 static int rocker_port_fdb_add(struct rocker_port *rocker_port,
4414 enum switchdev_trans trans,
4415 const struct switchdev_obj_fdb *fdb)
4416 {
4417 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4418 int flags = 0;
4419
4420 if (!rocker_port_is_bridged(rocker_port))
4421 return -EINVAL;
4422
4423 return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4424 }
4425
4426 static int rocker_port_obj_add(struct net_device *dev,
4427 struct switchdev_obj *obj)
4428 {
4429 struct rocker_port *rocker_port = netdev_priv(dev);
4430 const struct switchdev_obj_ipv4_fib *fib4;
4431 int err = 0;
4432
4433 switch (obj->trans) {
4434 case SWITCHDEV_TRANS_PREPARE:
4435 BUG_ON(!list_empty(&rocker_port->trans_mem));
4436 break;
4437 case SWITCHDEV_TRANS_ABORT:
4438 rocker_port_trans_abort(rocker_port);
4439 return 0;
4440 default:
4441 break;
4442 }
4443
4444 switch (obj->id) {
4445 case SWITCHDEV_OBJ_PORT_VLAN:
4446 err = rocker_port_vlans_add(rocker_port, obj->trans,
4447 &obj->u.vlan);
4448 break;
4449 case SWITCHDEV_OBJ_IPV4_FIB:
4450 fib4 = &obj->u.ipv4_fib;
4451 err = rocker_port_fib_ipv4(rocker_port, obj->trans,
4452 htonl(fib4->dst), fib4->dst_len,
4453 fib4->fi, fib4->tb_id, 0);
4454 break;
4455 case SWITCHDEV_OBJ_PORT_FDB:
4456 err = rocker_port_fdb_add(rocker_port, obj->trans, &obj->u.fdb);
4457 break;
4458 default:
4459 err = -EOPNOTSUPP;
4460 break;
4461 }
4462
4463 return err;
4464 }
4465
4466 static int rocker_port_vlan_del(struct rocker_port *rocker_port,
4467 u16 vid, u16 flags)
4468 {
4469 int err;
4470
4471 err = rocker_port_router_mac(rocker_port, SWITCHDEV_TRANS_NONE,
4472 ROCKER_OP_FLAG_REMOVE, htons(vid));
4473 if (err)
4474 return err;
4475
4476 return rocker_port_vlan(rocker_port, SWITCHDEV_TRANS_NONE,
4477 ROCKER_OP_FLAG_REMOVE, vid);
4478 }
4479
4480 static int rocker_port_vlans_del(struct rocker_port *rocker_port,
4481 const struct switchdev_obj_vlan *vlan)
4482 {
4483 u16 vid;
4484 int err;
4485
4486 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4487 err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
4488 if (err)
4489 return err;
4490 }
4491
4492 return 0;
4493 }
4494
4495 static int rocker_port_fdb_del(struct rocker_port *rocker_port,
4496 enum switchdev_trans trans,
4497 const struct switchdev_obj_fdb *fdb)
4498 {
4499 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4500 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
4501
4502 if (!rocker_port_is_bridged(rocker_port))
4503 return -EINVAL;
4504
4505 return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4506 }
4507
4508 static int rocker_port_obj_del(struct net_device *dev,
4509 struct switchdev_obj *obj)
4510 {
4511 struct rocker_port *rocker_port = netdev_priv(dev);
4512 const struct switchdev_obj_ipv4_fib *fib4;
4513 int err = 0;
4514
4515 switch (obj->id) {
4516 case SWITCHDEV_OBJ_PORT_VLAN:
4517 err = rocker_port_vlans_del(rocker_port, &obj->u.vlan);
4518 break;
4519 case SWITCHDEV_OBJ_IPV4_FIB:
4520 fib4 = &obj->u.ipv4_fib;
4521 err = rocker_port_fib_ipv4(rocker_port, SWITCHDEV_TRANS_NONE,
4522 htonl(fib4->dst), fib4->dst_len,
4523 fib4->fi, fib4->tb_id,
4524 ROCKER_OP_FLAG_REMOVE);
4525 break;
4526 case SWITCHDEV_OBJ_PORT_FDB:
4527 err = rocker_port_fdb_del(rocker_port, obj->trans, &obj->u.fdb);
4528 break;
4529 default:
4530 err = -EOPNOTSUPP;
4531 break;
4532 }
4533
4534 return err;
4535 }
4536
4537 static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
4538 struct switchdev_obj *obj)
4539 {
4540 struct rocker *rocker = rocker_port->rocker;
4541 struct switchdev_obj_fdb *fdb = &obj->u.fdb;
4542 struct rocker_fdb_tbl_entry *found;
4543 struct hlist_node *tmp;
4544 unsigned long lock_flags;
4545 int bkt;
4546 int err = 0;
4547
4548 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4549 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4550 if (found->key.pport != rocker_port->pport)
4551 continue;
4552 fdb->addr = found->key.addr;
4553 fdb->ndm_state = NUD_REACHABLE;
4554 fdb->vid = rocker_port_vlan_to_vid(rocker_port,
4555 found->key.vlan_id);
4556 err = obj->cb(rocker_port->dev, obj);
4557 if (err)
4558 break;
4559 }
4560 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4561
4562 return err;
4563 }
4564
4565 static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
4566 struct switchdev_obj *obj)
4567 {
4568 struct switchdev_obj_vlan *vlan = &obj->u.vlan;
4569 u16 vid;
4570 int err = 0;
4571
4572 for (vid = 1; vid < VLAN_N_VID; vid++) {
4573 if (!test_bit(vid, rocker_port->vlan_bitmap))
4574 continue;
4575 vlan->flags = 0;
4576 if (rocker_vlan_id_is_internal(htons(vid)))
4577 vlan->flags |= BRIDGE_VLAN_INFO_PVID;
4578 vlan->vid_begin = vlan->vid_end = vid;
4579 err = obj->cb(rocker_port->dev, obj);
4580 if (err)
4581 break;
4582 }
4583
4584 return err;
4585 }
4586
4587 static int rocker_port_obj_dump(struct net_device *dev,
4588 struct switchdev_obj *obj)
4589 {
4590 const struct rocker_port *rocker_port = netdev_priv(dev);
4591 int err = 0;
4592
4593 switch (obj->id) {
4594 case SWITCHDEV_OBJ_PORT_FDB:
4595 err = rocker_port_fdb_dump(rocker_port, obj);
4596 break;
4597 case SWITCHDEV_OBJ_PORT_VLAN:
4598 err = rocker_port_vlan_dump(rocker_port, obj);
4599 break;
4600 default:
4601 err = -EOPNOTSUPP;
4602 break;
4603 }
4604
4605 return err;
4606 }
4607
4608 static const struct switchdev_ops rocker_port_switchdev_ops = {
4609 .switchdev_port_attr_get = rocker_port_attr_get,
4610 .switchdev_port_attr_set = rocker_port_attr_set,
4611 .switchdev_port_obj_add = rocker_port_obj_add,
4612 .switchdev_port_obj_del = rocker_port_obj_del,
4613 .switchdev_port_obj_dump = rocker_port_obj_dump,
4614 };
4615
4616 /********************
4617 * ethtool interface
4618 ********************/
4619
4620 static int rocker_port_get_settings(struct net_device *dev,
4621 struct ethtool_cmd *ecmd)
4622 {
4623 struct rocker_port *rocker_port = netdev_priv(dev);
4624
4625 return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4626 }
4627
4628 static int rocker_port_set_settings(struct net_device *dev,
4629 struct ethtool_cmd *ecmd)
4630 {
4631 struct rocker_port *rocker_port = netdev_priv(dev);
4632
4633 return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4634 }
4635
4636 static void rocker_port_get_drvinfo(struct net_device *dev,
4637 struct ethtool_drvinfo *drvinfo)
4638 {
4639 strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4640 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4641 }
4642
4643 static struct rocker_port_stats {
4644 char str[ETH_GSTRING_LEN];
4645 int type;
4646 } rocker_port_stats[] = {
4647 { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, },
4648 { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, },
4649 { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4650 { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, },
4651
4652 { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, },
4653 { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, },
4654 { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4655 { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, },
4656 };
4657
4658 #define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats)
4659
4660 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4661 u8 *data)
4662 {
4663 u8 *p = data;
4664 int i;
4665
4666 switch (stringset) {
4667 case ETH_SS_STATS:
4668 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4669 memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4670 p += ETH_GSTRING_LEN;
4671 }
4672 break;
4673 }
4674 }
4675
4676 static int
4677 rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port,
4678 struct rocker_desc_info *desc_info,
4679 void *priv)
4680 {
4681 struct rocker_tlv *cmd_stats;
4682
4683 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4684 ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4685 return -EMSGSIZE;
4686
4687 cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4688 if (!cmd_stats)
4689 return -EMSGSIZE;
4690
4691 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4692 rocker_port->pport))
4693 return -EMSGSIZE;
4694
4695 rocker_tlv_nest_end(desc_info, cmd_stats);
4696
4697 return 0;
4698 }
4699
4700 static int
4701 rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port,
4702 const struct rocker_desc_info *desc_info,
4703 void *priv)
4704 {
4705 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4706 const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4707 const struct rocker_tlv *pattr;
4708 u32 pport;
4709 u64 *data = priv;
4710 int i;
4711
4712 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4713
4714 if (!attrs[ROCKER_TLV_CMD_INFO])
4715 return -EIO;
4716
4717 rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4718 attrs[ROCKER_TLV_CMD_INFO]);
4719
4720 if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4721 return -EIO;
4722
4723 pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4724 if (pport != rocker_port->pport)
4725 return -EIO;
4726
4727 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4728 pattr = stats_attrs[rocker_port_stats[i].type];
4729 if (!pattr)
4730 continue;
4731
4732 data[i] = rocker_tlv_get_u64(pattr);
4733 }
4734
4735 return 0;
4736 }
4737
4738 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4739 void *priv)
4740 {
4741 return rocker_cmd_exec(rocker_port, SWITCHDEV_TRANS_NONE, 0,
4742 rocker_cmd_get_port_stats_prep, NULL,
4743 rocker_cmd_get_port_stats_ethtool_proc,
4744 priv);
4745 }
4746
4747 static void rocker_port_get_stats(struct net_device *dev,
4748 struct ethtool_stats *stats, u64 *data)
4749 {
4750 struct rocker_port *rocker_port = netdev_priv(dev);
4751
4752 if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4753 int i;
4754
4755 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4756 data[i] = 0;
4757 }
4758 }
4759
4760 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4761 {
4762 switch (sset) {
4763 case ETH_SS_STATS:
4764 return ROCKER_PORT_STATS_LEN;
4765 default:
4766 return -EOPNOTSUPP;
4767 }
4768 }
4769
4770 static const struct ethtool_ops rocker_port_ethtool_ops = {
4771 .get_settings = rocker_port_get_settings,
4772 .set_settings = rocker_port_set_settings,
4773 .get_drvinfo = rocker_port_get_drvinfo,
4774 .get_link = ethtool_op_get_link,
4775 .get_strings = rocker_port_get_strings,
4776 .get_ethtool_stats = rocker_port_get_stats,
4777 .get_sset_count = rocker_port_get_sset_count,
4778 };
4779
4780 /*****************
4781 * NAPI interface
4782 *****************/
4783
4784 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4785 {
4786 return container_of(napi, struct rocker_port, napi_tx);
4787 }
4788
4789 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4790 {
4791 struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4792 const struct rocker *rocker = rocker_port->rocker;
4793 const struct rocker_desc_info *desc_info;
4794 u32 credits = 0;
4795 int err;
4796
4797 /* Cleanup tx descriptors */
4798 while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4799 struct sk_buff *skb;
4800
4801 err = rocker_desc_err(desc_info);
4802 if (err && net_ratelimit())
4803 netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4804 err);
4805 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4806
4807 skb = rocker_desc_cookie_ptr_get(desc_info);
4808 if (err == 0) {
4809 rocker_port->dev->stats.tx_packets++;
4810 rocker_port->dev->stats.tx_bytes += skb->len;
4811 } else {
4812 rocker_port->dev->stats.tx_errors++;
4813 }
4814
4815 dev_kfree_skb_any(skb);
4816 credits++;
4817 }
4818
4819 if (credits && netif_queue_stopped(rocker_port->dev))
4820 netif_wake_queue(rocker_port->dev);
4821
4822 napi_complete(napi);
4823 rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4824
4825 return 0;
4826 }
4827
4828 static int rocker_port_rx_proc(const struct rocker *rocker,
4829 const struct rocker_port *rocker_port,
4830 struct rocker_desc_info *desc_info)
4831 {
4832 const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4833 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4834 size_t rx_len;
4835 u16 rx_flags = 0;
4836
4837 if (!skb)
4838 return -ENOENT;
4839
4840 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4841 if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4842 return -EINVAL;
4843 if (attrs[ROCKER_TLV_RX_FLAGS])
4844 rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]);
4845
4846 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4847
4848 rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4849 skb_put(skb, rx_len);
4850 skb->protocol = eth_type_trans(skb, rocker_port->dev);
4851
4852 if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD)
4853 skb->offload_fwd_mark = rocker_port->dev->offload_fwd_mark;
4854
4855 rocker_port->dev->stats.rx_packets++;
4856 rocker_port->dev->stats.rx_bytes += skb->len;
4857
4858 netif_receive_skb(skb);
4859
4860 return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info);
4861 }
4862
4863 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4864 {
4865 return container_of(napi, struct rocker_port, napi_rx);
4866 }
4867
4868 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4869 {
4870 struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4871 const struct rocker *rocker = rocker_port->rocker;
4872 struct rocker_desc_info *desc_info;
4873 u32 credits = 0;
4874 int err;
4875
4876 /* Process rx descriptors */
4877 while (credits < budget &&
4878 (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4879 err = rocker_desc_err(desc_info);
4880 if (err) {
4881 if (net_ratelimit())
4882 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4883 err);
4884 } else {
4885 err = rocker_port_rx_proc(rocker, rocker_port,
4886 desc_info);
4887 if (err && net_ratelimit())
4888 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4889 err);
4890 }
4891 if (err)
4892 rocker_port->dev->stats.rx_errors++;
4893
4894 rocker_desc_gen_clear(desc_info);
4895 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4896 credits++;
4897 }
4898
4899 if (credits < budget)
4900 napi_complete(napi);
4901
4902 rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4903
4904 return credits;
4905 }
4906
4907 /*****************
4908 * PCI driver ops
4909 *****************/
4910
4911 static void rocker_carrier_init(const struct rocker_port *rocker_port)
4912 {
4913 const struct rocker *rocker = rocker_port->rocker;
4914 u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4915 bool link_up;
4916
4917 link_up = link_status & (1 << rocker_port->pport);
4918 if (link_up)
4919 netif_carrier_on(rocker_port->dev);
4920 else
4921 netif_carrier_off(rocker_port->dev);
4922 }
4923
4924 static void rocker_remove_ports(const struct rocker *rocker)
4925 {
4926 struct rocker_port *rocker_port;
4927 int i;
4928
4929 for (i = 0; i < rocker->port_count; i++) {
4930 rocker_port = rocker->ports[i];
4931 if (!rocker_port)
4932 continue;
4933 rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
4934 ROCKER_OP_FLAG_REMOVE);
4935 unregister_netdev(rocker_port->dev);
4936 free_netdev(rocker_port->dev);
4937 }
4938 kfree(rocker->ports);
4939 }
4940
4941 static void rocker_port_dev_addr_init(struct rocker_port *rocker_port)
4942 {
4943 const struct rocker *rocker = rocker_port->rocker;
4944 const struct pci_dev *pdev = rocker->pdev;
4945 int err;
4946
4947 err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4948 rocker_port->dev->dev_addr);
4949 if (err) {
4950 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4951 eth_hw_addr_random(rocker_port->dev);
4952 }
4953 }
4954
4955 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4956 {
4957 const struct pci_dev *pdev = rocker->pdev;
4958 struct rocker_port *rocker_port;
4959 struct net_device *dev;
4960 u16 untagged_vid = 0;
4961 int err;
4962
4963 dev = alloc_etherdev(sizeof(struct rocker_port));
4964 if (!dev)
4965 return -ENOMEM;
4966 rocker_port = netdev_priv(dev);
4967 rocker_port->dev = dev;
4968 rocker_port->rocker = rocker;
4969 rocker_port->port_number = port_number;
4970 rocker_port->pport = port_number + 1;
4971 rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4972 INIT_LIST_HEAD(&rocker_port->trans_mem);
4973
4974 rocker_port_dev_addr_init(rocker_port);
4975 dev->netdev_ops = &rocker_port_netdev_ops;
4976 dev->ethtool_ops = &rocker_port_ethtool_ops;
4977 dev->switchdev_ops = &rocker_port_switchdev_ops;
4978 netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4979 NAPI_POLL_WEIGHT);
4980 netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4981 NAPI_POLL_WEIGHT);
4982 rocker_carrier_init(rocker_port);
4983
4984 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG;
4985
4986 err = register_netdev(dev);
4987 if (err) {
4988 dev_err(&pdev->dev, "register_netdev failed\n");
4989 goto err_register_netdev;
4990 }
4991 rocker->ports[port_number] = rocker_port;
4992
4993 switchdev_port_fwd_mark_set(rocker_port->dev, NULL, false);
4994
4995 rocker_port_set_learning(rocker_port, SWITCHDEV_TRANS_NONE);
4996
4997 err = rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE, 0);
4998 if (err) {
4999 netdev_err(rocker_port->dev, "install ig port table failed\n");
5000 goto err_port_ig_tbl;
5001 }
5002
5003 rocker_port->internal_vlan_id =
5004 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
5005
5006 err = rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
5007 untagged_vid, 0);
5008 if (err) {
5009 netdev_err(rocker_port->dev, "install untagged VLAN failed\n");
5010 goto err_untagged_vlan;
5011 }
5012
5013 return 0;
5014
5015 err_untagged_vlan:
5016 rocker_port_ig_tbl(rocker_port, SWITCHDEV_TRANS_NONE,
5017 ROCKER_OP_FLAG_REMOVE);
5018 err_port_ig_tbl:
5019 rocker->ports[port_number] = NULL;
5020 unregister_netdev(dev);
5021 err_register_netdev:
5022 free_netdev(dev);
5023 return err;
5024 }
5025
5026 static int rocker_probe_ports(struct rocker *rocker)
5027 {
5028 int i;
5029 size_t alloc_size;
5030 int err;
5031
5032 alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
5033 rocker->ports = kzalloc(alloc_size, GFP_KERNEL);
5034 if (!rocker->ports)
5035 return -ENOMEM;
5036 for (i = 0; i < rocker->port_count; i++) {
5037 err = rocker_probe_port(rocker, i);
5038 if (err)
5039 goto remove_ports;
5040 }
5041 return 0;
5042
5043 remove_ports:
5044 rocker_remove_ports(rocker);
5045 return err;
5046 }
5047
5048 static int rocker_msix_init(struct rocker *rocker)
5049 {
5050 struct pci_dev *pdev = rocker->pdev;
5051 int msix_entries;
5052 int i;
5053 int err;
5054
5055 msix_entries = pci_msix_vec_count(pdev);
5056 if (msix_entries < 0)
5057 return msix_entries;
5058
5059 if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
5060 return -EINVAL;
5061
5062 rocker->msix_entries = kmalloc_array(msix_entries,
5063 sizeof(struct msix_entry),
5064 GFP_KERNEL);
5065 if (!rocker->msix_entries)
5066 return -ENOMEM;
5067
5068 for (i = 0; i < msix_entries; i++)
5069 rocker->msix_entries[i].entry = i;
5070
5071 err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
5072 if (err < 0)
5073 goto err_enable_msix;
5074
5075 return 0;
5076
5077 err_enable_msix:
5078 kfree(rocker->msix_entries);
5079 return err;
5080 }
5081
5082 static void rocker_msix_fini(const struct rocker *rocker)
5083 {
5084 pci_disable_msix(rocker->pdev);
5085 kfree(rocker->msix_entries);
5086 }
5087
5088 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
5089 {
5090 struct rocker *rocker;
5091 int err;
5092
5093 rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
5094 if (!rocker)
5095 return -ENOMEM;
5096
5097 err = pci_enable_device(pdev);
5098 if (err) {
5099 dev_err(&pdev->dev, "pci_enable_device failed\n");
5100 goto err_pci_enable_device;
5101 }
5102
5103 err = pci_request_regions(pdev, rocker_driver_name);
5104 if (err) {
5105 dev_err(&pdev->dev, "pci_request_regions failed\n");
5106 goto err_pci_request_regions;
5107 }
5108
5109 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
5110 if (!err) {
5111 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
5112 if (err) {
5113 dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
5114 goto err_pci_set_dma_mask;
5115 }
5116 } else {
5117 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5118 if (err) {
5119 dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
5120 goto err_pci_set_dma_mask;
5121 }
5122 }
5123
5124 if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
5125 dev_err(&pdev->dev, "invalid PCI region size\n");
5126 err = -EINVAL;
5127 goto err_pci_resource_len_check;
5128 }
5129
5130 rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
5131 pci_resource_len(pdev, 0));
5132 if (!rocker->hw_addr) {
5133 dev_err(&pdev->dev, "ioremap failed\n");
5134 err = -EIO;
5135 goto err_ioremap;
5136 }
5137 pci_set_master(pdev);
5138
5139 rocker->pdev = pdev;
5140 pci_set_drvdata(pdev, rocker);
5141
5142 rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
5143
5144 err = rocker_msix_init(rocker);
5145 if (err) {
5146 dev_err(&pdev->dev, "MSI-X init failed\n");
5147 goto err_msix_init;
5148 }
5149
5150 err = rocker_basic_hw_test(rocker);
5151 if (err) {
5152 dev_err(&pdev->dev, "basic hw test failed\n");
5153 goto err_basic_hw_test;
5154 }
5155
5156 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5157
5158 err = rocker_dma_rings_init(rocker);
5159 if (err)
5160 goto err_dma_rings_init;
5161
5162 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5163 rocker_cmd_irq_handler, 0,
5164 rocker_driver_name, rocker);
5165 if (err) {
5166 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5167 goto err_request_cmd_irq;
5168 }
5169
5170 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5171 rocker_event_irq_handler, 0,
5172 rocker_driver_name, rocker);
5173 if (err) {
5174 dev_err(&pdev->dev, "cannot assign event irq\n");
5175 goto err_request_event_irq;
5176 }
5177
5178 rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5179
5180 err = rocker_init_tbls(rocker);
5181 if (err) {
5182 dev_err(&pdev->dev, "cannot init rocker tables\n");
5183 goto err_init_tbls;
5184 }
5185
5186 err = rocker_probe_ports(rocker);
5187 if (err) {
5188 dev_err(&pdev->dev, "failed to probe ports\n");
5189 goto err_probe_ports;
5190 }
5191
5192 dev_info(&pdev->dev, "Rocker switch with id %*phN\n",
5193 (int)sizeof(rocker->hw.id), &rocker->hw.id);
5194
5195 return 0;
5196
5197 err_probe_ports:
5198 rocker_free_tbls(rocker);
5199 err_init_tbls:
5200 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5201 err_request_event_irq:
5202 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5203 err_request_cmd_irq:
5204 rocker_dma_rings_fini(rocker);
5205 err_dma_rings_init:
5206 err_basic_hw_test:
5207 rocker_msix_fini(rocker);
5208 err_msix_init:
5209 iounmap(rocker->hw_addr);
5210 err_ioremap:
5211 err_pci_resource_len_check:
5212 err_pci_set_dma_mask:
5213 pci_release_regions(pdev);
5214 err_pci_request_regions:
5215 pci_disable_device(pdev);
5216 err_pci_enable_device:
5217 kfree(rocker);
5218 return err;
5219 }
5220
5221 static void rocker_remove(struct pci_dev *pdev)
5222 {
5223 struct rocker *rocker = pci_get_drvdata(pdev);
5224
5225 rocker_free_tbls(rocker);
5226 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5227 rocker_remove_ports(rocker);
5228 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5229 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5230 rocker_dma_rings_fini(rocker);
5231 rocker_msix_fini(rocker);
5232 iounmap(rocker->hw_addr);
5233 pci_release_regions(rocker->pdev);
5234 pci_disable_device(rocker->pdev);
5235 kfree(rocker);
5236 }
5237
5238 static struct pci_driver rocker_pci_driver = {
5239 .name = rocker_driver_name,
5240 .id_table = rocker_pci_id_table,
5241 .probe = rocker_probe,
5242 .remove = rocker_remove,
5243 };
5244
5245 /************************************
5246 * Net device notifier event handler
5247 ************************************/
5248
5249 static bool rocker_port_dev_check(const struct net_device *dev)
5250 {
5251 return dev->netdev_ops == &rocker_port_netdev_ops;
5252 }
5253
5254 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5255 struct net_device *bridge)
5256 {
5257 u16 untagged_vid = 0;
5258 int err;
5259
5260 /* Port is joining bridge, so the internal VLAN for the
5261 * port is going to change to the bridge internal VLAN.
5262 * Let's remove untagged VLAN (vid=0) from port and
5263 * re-add once internal VLAN has changed.
5264 */
5265
5266 err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5267 if (err)
5268 return err;
5269
5270 rocker_port_internal_vlan_id_put(rocker_port,
5271 rocker_port->dev->ifindex);
5272 rocker_port->internal_vlan_id =
5273 rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
5274
5275 rocker_port->bridge_dev = bridge;
5276 switchdev_port_fwd_mark_set(rocker_port->dev, bridge, true);
5277
5278 return rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
5279 untagged_vid, 0);
5280 }
5281
5282 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5283 {
5284 u16 untagged_vid = 0;
5285 int err;
5286
5287 err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5288 if (err)
5289 return err;
5290
5291 rocker_port_internal_vlan_id_put(rocker_port,
5292 rocker_port->bridge_dev->ifindex);
5293 rocker_port->internal_vlan_id =
5294 rocker_port_internal_vlan_id_get(rocker_port,
5295 rocker_port->dev->ifindex);
5296
5297 switchdev_port_fwd_mark_set(rocker_port->dev, rocker_port->bridge_dev,
5298 false);
5299 rocker_port->bridge_dev = NULL;
5300
5301 err = rocker_port_vlan_add(rocker_port, SWITCHDEV_TRANS_NONE,
5302 untagged_vid, 0);
5303 if (err)
5304 return err;
5305
5306 if (rocker_port->dev->flags & IFF_UP)
5307 err = rocker_port_fwd_enable(rocker_port,
5308 SWITCHDEV_TRANS_NONE, 0);
5309
5310 return err;
5311 }
5312
5313
5314 static int rocker_port_ovs_changed(struct rocker_port *rocker_port,
5315 struct net_device *master)
5316 {
5317 int err;
5318
5319 rocker_port->bridge_dev = master;
5320
5321 err = rocker_port_fwd_disable(rocker_port, SWITCHDEV_TRANS_NONE, 0);
5322 if (err)
5323 return err;
5324 err = rocker_port_fwd_enable(rocker_port, SWITCHDEV_TRANS_NONE, 0);
5325
5326 return err;
5327 }
5328
5329 static int rocker_port_master_linked(struct rocker_port *rocker_port,
5330 struct net_device *master)
5331 {
5332 int err = 0;
5333
5334 if (netif_is_bridge_master(master))
5335 err = rocker_port_bridge_join(rocker_port, master);
5336 else if (netif_is_ovs_master(master))
5337 err = rocker_port_ovs_changed(rocker_port, master);
5338 return err;
5339 }
5340
5341 static int rocker_port_master_unlinked(struct rocker_port *rocker_port)
5342 {
5343 int err = 0;
5344
5345 if (rocker_port_is_bridged(rocker_port))
5346 err = rocker_port_bridge_leave(rocker_port);
5347 else if (rocker_port_is_ovsed(rocker_port))
5348 err = rocker_port_ovs_changed(rocker_port, NULL);
5349 return err;
5350 }
5351
5352 static int rocker_netdevice_event(struct notifier_block *unused,
5353 unsigned long event, void *ptr)
5354 {
5355 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
5356 struct netdev_notifier_changeupper_info *info;
5357 struct rocker_port *rocker_port;
5358 int err;
5359
5360 if (!rocker_port_dev_check(dev))
5361 return NOTIFY_DONE;
5362
5363 switch (event) {
5364 case NETDEV_CHANGEUPPER:
5365 info = ptr;
5366 if (!info->master)
5367 goto out;
5368 rocker_port = netdev_priv(dev);
5369 if (info->linking) {
5370 err = rocker_port_master_linked(rocker_port,
5371 info->upper_dev);
5372 if (err)
5373 netdev_warn(dev, "failed to reflect master linked (err %d)\n",
5374 err);
5375 } else {
5376 err = rocker_port_master_unlinked(rocker_port);
5377 if (err)
5378 netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
5379 err);
5380 }
5381 break;
5382 }
5383 out:
5384 return NOTIFY_DONE;
5385 }
5386
5387 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5388 .notifier_call = rocker_netdevice_event,
5389 };
5390
5391 /************************************
5392 * Net event notifier event handler
5393 ************************************/
5394
5395 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5396 {
5397 struct rocker_port *rocker_port = netdev_priv(dev);
5398 int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) |
5399 ROCKER_OP_FLAG_NOWAIT;
5400 __be32 ip_addr = *(__be32 *)n->primary_key;
5401
5402 return rocker_port_ipv4_neigh(rocker_port, SWITCHDEV_TRANS_NONE,
5403 flags, ip_addr, n->ha);
5404 }
5405
5406 static int rocker_netevent_event(struct notifier_block *unused,
5407 unsigned long event, void *ptr)
5408 {
5409 struct net_device *dev;
5410 struct neighbour *n = ptr;
5411 int err;
5412
5413 switch (event) {
5414 case NETEVENT_NEIGH_UPDATE:
5415 if (n->tbl != &arp_tbl)
5416 return NOTIFY_DONE;
5417 dev = n->dev;
5418 if (!rocker_port_dev_check(dev))
5419 return NOTIFY_DONE;
5420 err = rocker_neigh_update(dev, n);
5421 if (err)
5422 netdev_warn(dev,
5423 "failed to handle neigh update (err %d)\n",
5424 err);
5425 break;
5426 }
5427
5428 return NOTIFY_DONE;
5429 }
5430
5431 static struct notifier_block rocker_netevent_nb __read_mostly = {
5432 .notifier_call = rocker_netevent_event,
5433 };
5434
5435 /***********************
5436 * Module init and exit
5437 ***********************/
5438
5439 static int __init rocker_module_init(void)
5440 {
5441 int err;
5442
5443 register_netdevice_notifier(&rocker_netdevice_nb);
5444 register_netevent_notifier(&rocker_netevent_nb);
5445 err = pci_register_driver(&rocker_pci_driver);
5446 if (err)
5447 goto err_pci_register_driver;
5448 return 0;
5449
5450 err_pci_register_driver:
5451 unregister_netevent_notifier(&rocker_netevent_nb);
5452 unregister_netdevice_notifier(&rocker_netdevice_nb);
5453 return err;
5454 }
5455
5456 static void __exit rocker_module_exit(void)
5457 {
5458 unregister_netevent_notifier(&rocker_netevent_nb);
5459 unregister_netdevice_notifier(&rocker_netdevice_nb);
5460 pci_unregister_driver(&rocker_pci_driver);
5461 }
5462
5463 module_init(rocker_module_init);
5464 module_exit(rocker_module_exit);
5465
5466 MODULE_LICENSE("GPL v2");
5467 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5468 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5469 MODULE_DESCRIPTION("Rocker switch device driver");
5470 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);
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