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Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / net / ethernet / rocker / rocker.c
blobe9f2349e98bc0f32894c4880faf98f30b7737eab
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 <linux/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 unsigned long touched;
156 struct rocker_fdb_tbl_key {
157 struct rocker_port *rocker_port;
158 u8 addr[ETH_ALEN];
159 __be16 vlan_id;
160 } key;
161 };
162
163 struct rocker_internal_vlan_tbl_entry {
164 struct hlist_node entry;
165 int ifindex; /* key */
166 u32 ref_count;
167 __be16 vlan_id;
168 };
169
170 struct rocker_neigh_tbl_entry {
171 struct hlist_node entry;
172 __be32 ip_addr; /* key */
173 struct net_device *dev;
174 u32 ref_count;
175 u32 index;
176 u8 eth_dst[ETH_ALEN];
177 bool ttl_check;
178 };
179
180 struct rocker_desc_info {
181 char *data; /* mapped */
182 size_t data_size;
183 size_t tlv_size;
184 struct rocker_desc *desc;
185 dma_addr_t mapaddr;
186 };
187
188 struct rocker_dma_ring_info {
189 size_t size;
190 u32 head;
191 u32 tail;
192 struct rocker_desc *desc; /* mapped */
193 dma_addr_t mapaddr;
194 struct rocker_desc_info *desc_info;
195 unsigned int type;
196 };
197
198 struct rocker;
199
200 enum {
201 ROCKER_CTRL_LINK_LOCAL_MCAST,
202 ROCKER_CTRL_LOCAL_ARP,
203 ROCKER_CTRL_IPV4_MCAST,
204 ROCKER_CTRL_IPV6_MCAST,
205 ROCKER_CTRL_DFLT_BRIDGING,
206 ROCKER_CTRL_DFLT_OVS,
207 ROCKER_CTRL_MAX,
208 };
209
210 #define ROCKER_INTERNAL_VLAN_ID_BASE 0x0f00
211 #define ROCKER_N_INTERNAL_VLANS 255
212 #define ROCKER_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
213 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
214
215 struct rocker_port {
216 struct net_device *dev;
217 struct net_device *bridge_dev;
218 struct rocker *rocker;
219 unsigned int port_number;
220 u32 pport;
221 __be16 internal_vlan_id;
222 int stp_state;
223 u32 brport_flags;
224 unsigned long ageing_time;
225 bool ctrls[ROCKER_CTRL_MAX];
226 unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
227 struct napi_struct napi_tx;
228 struct napi_struct napi_rx;
229 struct rocker_dma_ring_info tx_ring;
230 struct rocker_dma_ring_info rx_ring;
231 };
232
233 struct rocker {
234 struct pci_dev *pdev;
235 u8 __iomem *hw_addr;
236 struct msix_entry *msix_entries;
237 unsigned int port_count;
238 struct rocker_port **ports;
239 struct {
240 u64 id;
241 } hw;
242 spinlock_t cmd_ring_lock; /* for cmd ring accesses */
243 struct rocker_dma_ring_info cmd_ring;
244 struct rocker_dma_ring_info event_ring;
245 DECLARE_HASHTABLE(flow_tbl, 16);
246 spinlock_t flow_tbl_lock; /* for flow tbl accesses */
247 u64 flow_tbl_next_cookie;
248 DECLARE_HASHTABLE(group_tbl, 16);
249 spinlock_t group_tbl_lock; /* for group tbl accesses */
250 struct timer_list fdb_cleanup_timer;
251 DECLARE_HASHTABLE(fdb_tbl, 16);
252 spinlock_t fdb_tbl_lock; /* for fdb tbl accesses */
253 unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
254 DECLARE_HASHTABLE(internal_vlan_tbl, 8);
255 spinlock_t internal_vlan_tbl_lock; /* for vlan tbl accesses */
256 DECLARE_HASHTABLE(neigh_tbl, 16);
257 spinlock_t neigh_tbl_lock; /* for neigh tbl accesses */
258 u32 neigh_tbl_next_index;
259 };
260
261 static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
262 static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
263 static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
264 static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
265 static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
266 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
267 static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
268 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
269 static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
270
271 /* Rocker priority levels for flow table entries. Higher
272 * priority match takes precedence over lower priority match.
273 */
274
275 enum {
276 ROCKER_PRIORITY_UNKNOWN = 0,
277 ROCKER_PRIORITY_IG_PORT = 1,
278 ROCKER_PRIORITY_VLAN = 1,
279 ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
280 ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
281 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
282 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
283 ROCKER_PRIORITY_BRIDGING_VLAN = 3,
284 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
285 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
286 ROCKER_PRIORITY_BRIDGING_TENANT = 3,
287 ROCKER_PRIORITY_ACL_CTRL = 3,
288 ROCKER_PRIORITY_ACL_NORMAL = 2,
289 ROCKER_PRIORITY_ACL_DFLT = 1,
290 };
291
292 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
293 {
294 u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
295 u16 end = 0xffe;
296 u16 _vlan_id = ntohs(vlan_id);
297
298 return (_vlan_id >= start && _vlan_id <= end);
299 }
300
301 static __be16 rocker_port_vid_to_vlan(const struct rocker_port *rocker_port,
302 u16 vid, bool *pop_vlan)
303 {
304 __be16 vlan_id;
305
306 if (pop_vlan)
307 *pop_vlan = false;
308 vlan_id = htons(vid);
309 if (!vlan_id) {
310 vlan_id = rocker_port->internal_vlan_id;
311 if (pop_vlan)
312 *pop_vlan = true;
313 }
314
315 return vlan_id;
316 }
317
318 static u16 rocker_port_vlan_to_vid(const struct rocker_port *rocker_port,
319 __be16 vlan_id)
320 {
321 if (rocker_vlan_id_is_internal(vlan_id))
322 return 0;
323
324 return ntohs(vlan_id);
325 }
326
327 static bool rocker_port_is_bridged(const struct rocker_port *rocker_port)
328 {
329 return rocker_port->bridge_dev &&
330 netif_is_bridge_master(rocker_port->bridge_dev);
331 }
332
333 static bool rocker_port_is_ovsed(const struct rocker_port *rocker_port)
334 {
335 return rocker_port->bridge_dev &&
336 netif_is_ovs_master(rocker_port->bridge_dev);
337 }
338
339 #define ROCKER_OP_FLAG_REMOVE BIT(0)
340 #define ROCKER_OP_FLAG_NOWAIT BIT(1)
341 #define ROCKER_OP_FLAG_LEARNED BIT(2)
342 #define ROCKER_OP_FLAG_REFRESH BIT(3)
343
344 static void *__rocker_port_mem_alloc(struct rocker_port *rocker_port,
345 struct switchdev_trans *trans, int flags,
346 size_t size)
347 {
348 struct switchdev_trans_item *elem = NULL;
349 gfp_t gfp_flags = (flags & ROCKER_OP_FLAG_NOWAIT) ?
350 GFP_ATOMIC : GFP_KERNEL;
351
352 /* If in transaction prepare phase, allocate the memory
353 * and enqueue it on a transaction. If in transaction
354 * commit phase, dequeue the memory from the transaction
355 * rather than re-allocating the memory. The idea is the
356 * driver code paths for prepare and commit are identical
357 * so the memory allocated in the prepare phase is the
358 * memory used in the commit phase.
359 */
360
361 if (!trans) {
362 elem = kzalloc(size + sizeof(*elem), gfp_flags);
363 } else if (switchdev_trans_ph_prepare(trans)) {
364 elem = kzalloc(size + sizeof(*elem), gfp_flags);
365 if (!elem)
366 return NULL;
367 switchdev_trans_item_enqueue(trans, elem, kfree, elem);
368 } else {
369 elem = switchdev_trans_item_dequeue(trans);
370 }
371
372 return elem ? elem + 1 : NULL;
373 }
374
375 static void *rocker_port_kzalloc(struct rocker_port *rocker_port,
376 struct switchdev_trans *trans, int flags,
377 size_t size)
378 {
379 return __rocker_port_mem_alloc(rocker_port, trans, flags, size);
380 }
381
382 static void *rocker_port_kcalloc(struct rocker_port *rocker_port,
383 struct switchdev_trans *trans, int flags,
384 size_t n, size_t size)
385 {
386 return __rocker_port_mem_alloc(rocker_port, trans, flags, n * size);
387 }
388
389 static void rocker_port_kfree(struct switchdev_trans *trans, const void *mem)
390 {
391 struct switchdev_trans_item *elem;
392
393 /* Frees are ignored if in transaction prepare phase. The
394 * memory remains on the per-port list until freed in the
395 * commit phase.
396 */
397
398 if (switchdev_trans_ph_prepare(trans))
399 return;
400
401 elem = (struct switchdev_trans_item *) mem - 1;
402 kfree(elem);
403 }
404
405 struct rocker_wait {
406 wait_queue_head_t wait;
407 bool done;
408 bool nowait;
409 };
410
411 static void rocker_wait_reset(struct rocker_wait *wait)
412 {
413 wait->done = false;
414 wait->nowait = false;
415 }
416
417 static void rocker_wait_init(struct rocker_wait *wait)
418 {
419 init_waitqueue_head(&wait->wait);
420 rocker_wait_reset(wait);
421 }
422
423 static struct rocker_wait *rocker_wait_create(struct rocker_port *rocker_port,
424 struct switchdev_trans *trans,
425 int flags)
426 {
427 struct rocker_wait *wait;
428
429 wait = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*wait));
430 if (!wait)
431 return NULL;
432 rocker_wait_init(wait);
433 return wait;
434 }
435
436 static void rocker_wait_destroy(struct switchdev_trans *trans,
437 struct rocker_wait *wait)
438 {
439 rocker_port_kfree(trans, wait);
440 }
441
442 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
443 unsigned long timeout)
444 {
445 wait_event_timeout(wait->wait, wait->done, HZ / 10);
446 if (!wait->done)
447 return false;
448 return true;
449 }
450
451 static void rocker_wait_wake_up(struct rocker_wait *wait)
452 {
453 wait->done = true;
454 wake_up(&wait->wait);
455 }
456
457 static u32 rocker_msix_vector(const struct rocker *rocker, unsigned int vector)
458 {
459 return rocker->msix_entries[vector].vector;
460 }
461
462 static u32 rocker_msix_tx_vector(const struct rocker_port *rocker_port)
463 {
464 return rocker_msix_vector(rocker_port->rocker,
465 ROCKER_MSIX_VEC_TX(rocker_port->port_number));
466 }
467
468 static u32 rocker_msix_rx_vector(const struct rocker_port *rocker_port)
469 {
470 return rocker_msix_vector(rocker_port->rocker,
471 ROCKER_MSIX_VEC_RX(rocker_port->port_number));
472 }
473
474 #define rocker_write32(rocker, reg, val) \
475 writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
476 #define rocker_read32(rocker, reg) \
477 readl((rocker)->hw_addr + (ROCKER_ ## reg))
478 #define rocker_write64(rocker, reg, val) \
479 writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
480 #define rocker_read64(rocker, reg) \
481 readq((rocker)->hw_addr + (ROCKER_ ## reg))
482
483 /*****************************
484 * HW basic testing functions
485 *****************************/
486
487 static int rocker_reg_test(const struct rocker *rocker)
488 {
489 const struct pci_dev *pdev = rocker->pdev;
490 u64 test_reg;
491 u64 rnd;
492
493 rnd = prandom_u32();
494 rnd >>= 1;
495 rocker_write32(rocker, TEST_REG, rnd);
496 test_reg = rocker_read32(rocker, TEST_REG);
497 if (test_reg != rnd * 2) {
498 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
499 test_reg, rnd * 2);
500 return -EIO;
501 }
502
503 rnd = prandom_u32();
504 rnd <<= 31;
505 rnd |= prandom_u32();
506 rocker_write64(rocker, TEST_REG64, rnd);
507 test_reg = rocker_read64(rocker, TEST_REG64);
508 if (test_reg != rnd * 2) {
509 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
510 test_reg, rnd * 2);
511 return -EIO;
512 }
513
514 return 0;
515 }
516
517 static int rocker_dma_test_one(const struct rocker *rocker,
518 struct rocker_wait *wait, u32 test_type,
519 dma_addr_t dma_handle, const unsigned char *buf,
520 const unsigned char *expect, size_t size)
521 {
522 const struct pci_dev *pdev = rocker->pdev;
523 int i;
524
525 rocker_wait_reset(wait);
526 rocker_write32(rocker, TEST_DMA_CTRL, test_type);
527
528 if (!rocker_wait_event_timeout(wait, HZ / 10)) {
529 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
530 return -EIO;
531 }
532
533 for (i = 0; i < size; i++) {
534 if (buf[i] != expect[i]) {
535 dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
536 buf[i], i, expect[i]);
537 return -EIO;
538 }
539 }
540 return 0;
541 }
542
543 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
544 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
545
546 static int rocker_dma_test_offset(const struct rocker *rocker,
547 struct rocker_wait *wait, int offset)
548 {
549 struct pci_dev *pdev = rocker->pdev;
550 unsigned char *alloc;
551 unsigned char *buf;
552 unsigned char *expect;
553 dma_addr_t dma_handle;
554 int i;
555 int err;
556
557 alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
558 GFP_KERNEL | GFP_DMA);
559 if (!alloc)
560 return -ENOMEM;
561 buf = alloc + offset;
562 expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
563
564 dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
565 PCI_DMA_BIDIRECTIONAL);
566 if (pci_dma_mapping_error(pdev, dma_handle)) {
567 err = -EIO;
568 goto free_alloc;
569 }
570
571 rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
572 rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
573
574 memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
575 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
576 dma_handle, buf, expect,
577 ROCKER_TEST_DMA_BUF_SIZE);
578 if (err)
579 goto unmap;
580
581 memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
582 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
583 dma_handle, buf, expect,
584 ROCKER_TEST_DMA_BUF_SIZE);
585 if (err)
586 goto unmap;
587
588 prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
589 for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
590 expect[i] = ~buf[i];
591 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
592 dma_handle, buf, expect,
593 ROCKER_TEST_DMA_BUF_SIZE);
594 if (err)
595 goto unmap;
596
597 unmap:
598 pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
599 PCI_DMA_BIDIRECTIONAL);
600 free_alloc:
601 kfree(alloc);
602
603 return err;
604 }
605
606 static int rocker_dma_test(const struct rocker *rocker,
607 struct rocker_wait *wait)
608 {
609 int i;
610 int err;
611
612 for (i = 0; i < 8; i++) {
613 err = rocker_dma_test_offset(rocker, wait, i);
614 if (err)
615 return err;
616 }
617 return 0;
618 }
619
620 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
621 {
622 struct rocker_wait *wait = dev_id;
623
624 rocker_wait_wake_up(wait);
625
626 return IRQ_HANDLED;
627 }
628
629 static int rocker_basic_hw_test(const struct rocker *rocker)
630 {
631 const struct pci_dev *pdev = rocker->pdev;
632 struct rocker_wait wait;
633 int err;
634
635 err = rocker_reg_test(rocker);
636 if (err) {
637 dev_err(&pdev->dev, "reg test failed\n");
638 return err;
639 }
640
641 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
642 rocker_test_irq_handler, 0,
643 rocker_driver_name, &wait);
644 if (err) {
645 dev_err(&pdev->dev, "cannot assign test irq\n");
646 return err;
647 }
648
649 rocker_wait_init(&wait);
650 rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
651
652 if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
653 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
654 err = -EIO;
655 goto free_irq;
656 }
657
658 err = rocker_dma_test(rocker, &wait);
659 if (err)
660 dev_err(&pdev->dev, "dma test failed\n");
661
662 free_irq:
663 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
664 return err;
665 }
666
667 /******
668 * TLV
669 ******/
670
671 #define ROCKER_TLV_ALIGNTO 8U
672 #define ROCKER_TLV_ALIGN(len) \
673 (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
674 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
675
676 /* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
677 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
678 * | Header | Pad | Payload | Pad |
679 * | (struct rocker_tlv) | ing | | ing |
680 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
681 * <--------------------------- tlv->len -------------------------->
682 */
683
684 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
685 int *remaining)
686 {
687 int totlen = ROCKER_TLV_ALIGN(tlv->len);
688
689 *remaining -= totlen;
690 return (struct rocker_tlv *) ((char *) tlv + totlen);
691 }
692
693 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
694 {
695 return remaining >= (int) ROCKER_TLV_HDRLEN &&
696 tlv->len >= ROCKER_TLV_HDRLEN &&
697 tlv->len <= remaining;
698 }
699
700 #define rocker_tlv_for_each(pos, head, len, rem) \
701 for (pos = head, rem = len; \
702 rocker_tlv_ok(pos, rem); \
703 pos = rocker_tlv_next(pos, &(rem)))
704
705 #define rocker_tlv_for_each_nested(pos, tlv, rem) \
706 rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \
707 rocker_tlv_len(tlv), rem)
708
709 static int rocker_tlv_attr_size(int payload)
710 {
711 return ROCKER_TLV_HDRLEN + payload;
712 }
713
714 static int rocker_tlv_total_size(int payload)
715 {
716 return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
717 }
718
719 static int rocker_tlv_padlen(int payload)
720 {
721 return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
722 }
723
724 static int rocker_tlv_type(const struct rocker_tlv *tlv)
725 {
726 return tlv->type;
727 }
728
729 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
730 {
731 return (char *) tlv + ROCKER_TLV_HDRLEN;
732 }
733
734 static int rocker_tlv_len(const struct rocker_tlv *tlv)
735 {
736 return tlv->len - ROCKER_TLV_HDRLEN;
737 }
738
739 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
740 {
741 return *(u8 *) rocker_tlv_data(tlv);
742 }
743
744 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
745 {
746 return *(u16 *) rocker_tlv_data(tlv);
747 }
748
749 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
750 {
751 return *(__be16 *) rocker_tlv_data(tlv);
752 }
753
754 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
755 {
756 return *(u32 *) rocker_tlv_data(tlv);
757 }
758
759 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
760 {
761 return *(u64 *) rocker_tlv_data(tlv);
762 }
763
764 static void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype,
765 const char *buf, int buf_len)
766 {
767 const struct rocker_tlv *tlv;
768 const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
769 int rem;
770
771 memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
772
773 rocker_tlv_for_each(tlv, head, buf_len, rem) {
774 u32 type = rocker_tlv_type(tlv);
775
776 if (type > 0 && type <= maxtype)
777 tb[type] = tlv;
778 }
779 }
780
781 static void rocker_tlv_parse_nested(const struct rocker_tlv **tb, int maxtype,
782 const struct rocker_tlv *tlv)
783 {
784 rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
785 rocker_tlv_len(tlv));
786 }
787
788 static void rocker_tlv_parse_desc(const struct rocker_tlv **tb, int maxtype,
789 const struct rocker_desc_info *desc_info)
790 {
791 rocker_tlv_parse(tb, maxtype, desc_info->data,
792 desc_info->desc->tlv_size);
793 }
794
795 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
796 {
797 return (struct rocker_tlv *) ((char *) desc_info->data +
798 desc_info->tlv_size);
799 }
800
801 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
802 int attrtype, int attrlen, const void *data)
803 {
804 int tail_room = desc_info->data_size - desc_info->tlv_size;
805 int total_size = rocker_tlv_total_size(attrlen);
806 struct rocker_tlv *tlv;
807
808 if (unlikely(tail_room < total_size))
809 return -EMSGSIZE;
810
811 tlv = rocker_tlv_start(desc_info);
812 desc_info->tlv_size += total_size;
813 tlv->type = attrtype;
814 tlv->len = rocker_tlv_attr_size(attrlen);
815 memcpy(rocker_tlv_data(tlv), data, attrlen);
816 memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
817 return 0;
818 }
819
820 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
821 int attrtype, u8 value)
822 {
823 return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
824 }
825
826 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
827 int attrtype, u16 value)
828 {
829 return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
830 }
831
832 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
833 int attrtype, __be16 value)
834 {
835 return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
836 }
837
838 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
839 int attrtype, u32 value)
840 {
841 return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
842 }
843
844 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
845 int attrtype, __be32 value)
846 {
847 return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
848 }
849
850 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
851 int attrtype, u64 value)
852 {
853 return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
854 }
855
856 static struct rocker_tlv *
857 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
858 {
859 struct rocker_tlv *start = rocker_tlv_start(desc_info);
860
861 if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
862 return NULL;
863
864 return start;
865 }
866
867 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
868 struct rocker_tlv *start)
869 {
870 start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
871 }
872
873 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
874 const struct rocker_tlv *start)
875 {
876 desc_info->tlv_size = (const char *) start - desc_info->data;
877 }
878
879 /******************************************
880 * DMA rings and descriptors manipulations
881 ******************************************/
882
883 static u32 __pos_inc(u32 pos, size_t limit)
884 {
885 return ++pos == limit ? 0 : pos;
886 }
887
888 static int rocker_desc_err(const struct rocker_desc_info *desc_info)
889 {
890 int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
891
892 switch (err) {
893 case ROCKER_OK:
894 return 0;
895 case -ROCKER_ENOENT:
896 return -ENOENT;
897 case -ROCKER_ENXIO:
898 return -ENXIO;
899 case -ROCKER_ENOMEM:
900 return -ENOMEM;
901 case -ROCKER_EEXIST:
902 return -EEXIST;
903 case -ROCKER_EINVAL:
904 return -EINVAL;
905 case -ROCKER_EMSGSIZE:
906 return -EMSGSIZE;
907 case -ROCKER_ENOTSUP:
908 return -EOPNOTSUPP;
909 case -ROCKER_ENOBUFS:
910 return -ENOBUFS;
911 }
912
913 return -EINVAL;
914 }
915
916 static void rocker_desc_gen_clear(const struct rocker_desc_info *desc_info)
917 {
918 desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
919 }
920
921 static bool rocker_desc_gen(const struct rocker_desc_info *desc_info)
922 {
923 u32 comp_err = desc_info->desc->comp_err;
924
925 return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
926 }
927
928 static void *rocker_desc_cookie_ptr_get(const struct rocker_desc_info *desc_info)
929 {
930 return (void *)(uintptr_t)desc_info->desc->cookie;
931 }
932
933 static void rocker_desc_cookie_ptr_set(const struct rocker_desc_info *desc_info,
934 void *ptr)
935 {
936 desc_info->desc->cookie = (uintptr_t) ptr;
937 }
938
939 static struct rocker_desc_info *
940 rocker_desc_head_get(const struct rocker_dma_ring_info *info)
941 {
942 static struct rocker_desc_info *desc_info;
943 u32 head = __pos_inc(info->head, info->size);
944
945 desc_info = &info->desc_info[info->head];
946 if (head == info->tail)
947 return NULL; /* ring full */
948 desc_info->tlv_size = 0;
949 return desc_info;
950 }
951
952 static void rocker_desc_commit(const struct rocker_desc_info *desc_info)
953 {
954 desc_info->desc->buf_size = desc_info->data_size;
955 desc_info->desc->tlv_size = desc_info->tlv_size;
956 }
957
958 static void rocker_desc_head_set(const struct rocker *rocker,
959 struct rocker_dma_ring_info *info,
960 const struct rocker_desc_info *desc_info)
961 {
962 u32 head = __pos_inc(info->head, info->size);
963
964 BUG_ON(head == info->tail);
965 rocker_desc_commit(desc_info);
966 info->head = head;
967 rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
968 }
969
970 static struct rocker_desc_info *
971 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
972 {
973 static struct rocker_desc_info *desc_info;
974
975 if (info->tail == info->head)
976 return NULL; /* nothing to be done between head and tail */
977 desc_info = &info->desc_info[info->tail];
978 if (!rocker_desc_gen(desc_info))
979 return NULL; /* gen bit not set, desc is not ready yet */
980 info->tail = __pos_inc(info->tail, info->size);
981 desc_info->tlv_size = desc_info->desc->tlv_size;
982 return desc_info;
983 }
984
985 static void rocker_dma_ring_credits_set(const struct rocker *rocker,
986 const struct rocker_dma_ring_info *info,
987 u32 credits)
988 {
989 if (credits)
990 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
991 }
992
993 static unsigned long rocker_dma_ring_size_fix(size_t size)
994 {
995 return max(ROCKER_DMA_SIZE_MIN,
996 min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
997 }
998
999 static int rocker_dma_ring_create(const struct rocker *rocker,
1000 unsigned int type,
1001 size_t size,
1002 struct rocker_dma_ring_info *info)
1003 {
1004 int i;
1005
1006 BUG_ON(size != rocker_dma_ring_size_fix(size));
1007 info->size = size;
1008 info->type = type;
1009 info->head = 0;
1010 info->tail = 0;
1011 info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
1012 GFP_KERNEL);
1013 if (!info->desc_info)
1014 return -ENOMEM;
1015
1016 info->desc = pci_alloc_consistent(rocker->pdev,
1017 info->size * sizeof(*info->desc),
1018 &info->mapaddr);
1019 if (!info->desc) {
1020 kfree(info->desc_info);
1021 return -ENOMEM;
1022 }
1023
1024 for (i = 0; i < info->size; i++)
1025 info->desc_info[i].desc = &info->desc[i];
1026
1027 rocker_write32(rocker, DMA_DESC_CTRL(info->type),
1028 ROCKER_DMA_DESC_CTRL_RESET);
1029 rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
1030 rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
1031
1032 return 0;
1033 }
1034
1035 static void rocker_dma_ring_destroy(const struct rocker *rocker,
1036 const struct rocker_dma_ring_info *info)
1037 {
1038 rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
1039
1040 pci_free_consistent(rocker->pdev,
1041 info->size * sizeof(struct rocker_desc),
1042 info->desc, info->mapaddr);
1043 kfree(info->desc_info);
1044 }
1045
1046 static void rocker_dma_ring_pass_to_producer(const struct rocker *rocker,
1047 struct rocker_dma_ring_info *info)
1048 {
1049 int i;
1050
1051 BUG_ON(info->head || info->tail);
1052
1053 /* When ring is consumer, we need to advance head for each desc.
1054 * That tells hw that the desc is ready to be used by it.
1055 */
1056 for (i = 0; i < info->size - 1; i++)
1057 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
1058 rocker_desc_commit(&info->desc_info[i]);
1059 }
1060
1061 static int rocker_dma_ring_bufs_alloc(const struct rocker *rocker,
1062 const struct rocker_dma_ring_info *info,
1063 int direction, size_t buf_size)
1064 {
1065 struct pci_dev *pdev = rocker->pdev;
1066 int i;
1067 int err;
1068
1069 for (i = 0; i < info->size; i++) {
1070 struct rocker_desc_info *desc_info = &info->desc_info[i];
1071 struct rocker_desc *desc = &info->desc[i];
1072 dma_addr_t dma_handle;
1073 char *buf;
1074
1075 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
1076 if (!buf) {
1077 err = -ENOMEM;
1078 goto rollback;
1079 }
1080
1081 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1082 if (pci_dma_mapping_error(pdev, dma_handle)) {
1083 kfree(buf);
1084 err = -EIO;
1085 goto rollback;
1086 }
1087
1088 desc_info->data = buf;
1089 desc_info->data_size = buf_size;
1090 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1091
1092 desc->buf_addr = dma_handle;
1093 desc->buf_size = buf_size;
1094 }
1095 return 0;
1096
1097 rollback:
1098 for (i--; i >= 0; i--) {
1099 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1100
1101 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1102 desc_info->data_size, direction);
1103 kfree(desc_info->data);
1104 }
1105 return err;
1106 }
1107
1108 static void rocker_dma_ring_bufs_free(const struct rocker *rocker,
1109 const struct rocker_dma_ring_info *info,
1110 int direction)
1111 {
1112 struct pci_dev *pdev = rocker->pdev;
1113 int i;
1114
1115 for (i = 0; i < info->size; i++) {
1116 const struct rocker_desc_info *desc_info = &info->desc_info[i];
1117 struct rocker_desc *desc = &info->desc[i];
1118
1119 desc->buf_addr = 0;
1120 desc->buf_size = 0;
1121 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1122 desc_info->data_size, direction);
1123 kfree(desc_info->data);
1124 }
1125 }
1126
1127 static int rocker_dma_rings_init(struct rocker *rocker)
1128 {
1129 const struct pci_dev *pdev = rocker->pdev;
1130 int err;
1131
1132 err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1133 ROCKER_DMA_CMD_DEFAULT_SIZE,
1134 &rocker->cmd_ring);
1135 if (err) {
1136 dev_err(&pdev->dev, "failed to create command dma ring\n");
1137 return err;
1138 }
1139
1140 spin_lock_init(&rocker->cmd_ring_lock);
1141
1142 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1143 PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1144 if (err) {
1145 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1146 goto err_dma_cmd_ring_bufs_alloc;
1147 }
1148
1149 err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1150 ROCKER_DMA_EVENT_DEFAULT_SIZE,
1151 &rocker->event_ring);
1152 if (err) {
1153 dev_err(&pdev->dev, "failed to create event dma ring\n");
1154 goto err_dma_event_ring_create;
1155 }
1156
1157 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1158 PCI_DMA_FROMDEVICE, PAGE_SIZE);
1159 if (err) {
1160 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1161 goto err_dma_event_ring_bufs_alloc;
1162 }
1163 rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1164 return 0;
1165
1166 err_dma_event_ring_bufs_alloc:
1167 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1168 err_dma_event_ring_create:
1169 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1170 PCI_DMA_BIDIRECTIONAL);
1171 err_dma_cmd_ring_bufs_alloc:
1172 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1173 return err;
1174 }
1175
1176 static void rocker_dma_rings_fini(struct rocker *rocker)
1177 {
1178 rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1179 PCI_DMA_BIDIRECTIONAL);
1180 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1181 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1182 PCI_DMA_BIDIRECTIONAL);
1183 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1184 }
1185
1186 static int rocker_dma_rx_ring_skb_map(const struct rocker_port *rocker_port,
1187 struct rocker_desc_info *desc_info,
1188 struct sk_buff *skb, size_t buf_len)
1189 {
1190 const struct rocker *rocker = rocker_port->rocker;
1191 struct pci_dev *pdev = rocker->pdev;
1192 dma_addr_t dma_handle;
1193
1194 dma_handle = pci_map_single(pdev, skb->data, buf_len,
1195 PCI_DMA_FROMDEVICE);
1196 if (pci_dma_mapping_error(pdev, dma_handle))
1197 return -EIO;
1198 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1199 goto tlv_put_failure;
1200 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1201 goto tlv_put_failure;
1202 return 0;
1203
1204 tlv_put_failure:
1205 pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1206 desc_info->tlv_size = 0;
1207 return -EMSGSIZE;
1208 }
1209
1210 static size_t rocker_port_rx_buf_len(const struct rocker_port *rocker_port)
1211 {
1212 return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1213 }
1214
1215 static int rocker_dma_rx_ring_skb_alloc(const struct rocker_port *rocker_port,
1216 struct rocker_desc_info *desc_info)
1217 {
1218 struct net_device *dev = rocker_port->dev;
1219 struct sk_buff *skb;
1220 size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1221 int err;
1222
1223 /* Ensure that hw will see tlv_size zero in case of an error.
1224 * That tells hw to use another descriptor.
1225 */
1226 rocker_desc_cookie_ptr_set(desc_info, NULL);
1227 desc_info->tlv_size = 0;
1228
1229 skb = netdev_alloc_skb_ip_align(dev, buf_len);
1230 if (!skb)
1231 return -ENOMEM;
1232 err = rocker_dma_rx_ring_skb_map(rocker_port, desc_info, skb, buf_len);
1233 if (err) {
1234 dev_kfree_skb_any(skb);
1235 return err;
1236 }
1237 rocker_desc_cookie_ptr_set(desc_info, skb);
1238 return 0;
1239 }
1240
1241 static void rocker_dma_rx_ring_skb_unmap(const struct rocker *rocker,
1242 const struct rocker_tlv **attrs)
1243 {
1244 struct pci_dev *pdev = rocker->pdev;
1245 dma_addr_t dma_handle;
1246 size_t len;
1247
1248 if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1249 !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1250 return;
1251 dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1252 len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1253 pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1254 }
1255
1256 static void rocker_dma_rx_ring_skb_free(const struct rocker *rocker,
1257 const struct rocker_desc_info *desc_info)
1258 {
1259 const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1260 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1261
1262 if (!skb)
1263 return;
1264 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1265 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1266 dev_kfree_skb_any(skb);
1267 }
1268
1269 static int rocker_dma_rx_ring_skbs_alloc(const struct rocker_port *rocker_port)
1270 {
1271 const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1272 const struct rocker *rocker = rocker_port->rocker;
1273 int i;
1274 int err;
1275
1276 for (i = 0; i < rx_ring->size; i++) {
1277 err = rocker_dma_rx_ring_skb_alloc(rocker_port,
1278 &rx_ring->desc_info[i]);
1279 if (err)
1280 goto rollback;
1281 }
1282 return 0;
1283
1284 rollback:
1285 for (i--; i >= 0; i--)
1286 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1287 return err;
1288 }
1289
1290 static void rocker_dma_rx_ring_skbs_free(const struct rocker_port *rocker_port)
1291 {
1292 const struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1293 const struct rocker *rocker = rocker_port->rocker;
1294 int i;
1295
1296 for (i = 0; i < rx_ring->size; i++)
1297 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1298 }
1299
1300 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1301 {
1302 struct rocker *rocker = rocker_port->rocker;
1303 int err;
1304
1305 err = rocker_dma_ring_create(rocker,
1306 ROCKER_DMA_TX(rocker_port->port_number),
1307 ROCKER_DMA_TX_DEFAULT_SIZE,
1308 &rocker_port->tx_ring);
1309 if (err) {
1310 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1311 return err;
1312 }
1313
1314 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1315 PCI_DMA_TODEVICE,
1316 ROCKER_DMA_TX_DESC_SIZE);
1317 if (err) {
1318 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1319 goto err_dma_tx_ring_bufs_alloc;
1320 }
1321
1322 err = rocker_dma_ring_create(rocker,
1323 ROCKER_DMA_RX(rocker_port->port_number),
1324 ROCKER_DMA_RX_DEFAULT_SIZE,
1325 &rocker_port->rx_ring);
1326 if (err) {
1327 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1328 goto err_dma_rx_ring_create;
1329 }
1330
1331 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1332 PCI_DMA_BIDIRECTIONAL,
1333 ROCKER_DMA_RX_DESC_SIZE);
1334 if (err) {
1335 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1336 goto err_dma_rx_ring_bufs_alloc;
1337 }
1338
1339 err = rocker_dma_rx_ring_skbs_alloc(rocker_port);
1340 if (err) {
1341 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1342 goto err_dma_rx_ring_skbs_alloc;
1343 }
1344 rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1345
1346 return 0;
1347
1348 err_dma_rx_ring_skbs_alloc:
1349 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1350 PCI_DMA_BIDIRECTIONAL);
1351 err_dma_rx_ring_bufs_alloc:
1352 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1353 err_dma_rx_ring_create:
1354 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1355 PCI_DMA_TODEVICE);
1356 err_dma_tx_ring_bufs_alloc:
1357 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1358 return err;
1359 }
1360
1361 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1362 {
1363 struct rocker *rocker = rocker_port->rocker;
1364
1365 rocker_dma_rx_ring_skbs_free(rocker_port);
1366 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1367 PCI_DMA_BIDIRECTIONAL);
1368 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1369 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1370 PCI_DMA_TODEVICE);
1371 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1372 }
1373
1374 static void rocker_port_set_enable(const struct rocker_port *rocker_port,
1375 bool enable)
1376 {
1377 u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1378
1379 if (enable)
1380 val |= 1ULL << rocker_port->pport;
1381 else
1382 val &= ~(1ULL << rocker_port->pport);
1383 rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1384 }
1385
1386 /********************************
1387 * Interrupt handler and helpers
1388 ********************************/
1389
1390 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1391 {
1392 struct rocker *rocker = dev_id;
1393 const struct rocker_desc_info *desc_info;
1394 struct rocker_wait *wait;
1395 u32 credits = 0;
1396
1397 spin_lock(&rocker->cmd_ring_lock);
1398 while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1399 wait = rocker_desc_cookie_ptr_get(desc_info);
1400 if (wait->nowait) {
1401 rocker_desc_gen_clear(desc_info);
1402 rocker_wait_destroy(NULL, wait);
1403 } else {
1404 rocker_wait_wake_up(wait);
1405 }
1406 credits++;
1407 }
1408 spin_unlock(&rocker->cmd_ring_lock);
1409 rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1410
1411 return IRQ_HANDLED;
1412 }
1413
1414 static void rocker_port_link_up(const struct rocker_port *rocker_port)
1415 {
1416 netif_carrier_on(rocker_port->dev);
1417 netdev_info(rocker_port->dev, "Link is up\n");
1418 }
1419
1420 static void rocker_port_link_down(const struct rocker_port *rocker_port)
1421 {
1422 netif_carrier_off(rocker_port->dev);
1423 netdev_info(rocker_port->dev, "Link is down\n");
1424 }
1425
1426 static int rocker_event_link_change(const struct rocker *rocker,
1427 const struct rocker_tlv *info)
1428 {
1429 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1430 unsigned int port_number;
1431 bool link_up;
1432 struct rocker_port *rocker_port;
1433
1434 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1435 if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1436 !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1437 return -EIO;
1438 port_number =
1439 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1440 link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1441
1442 if (port_number >= rocker->port_count)
1443 return -EINVAL;
1444
1445 rocker_port = rocker->ports[port_number];
1446 if (netif_carrier_ok(rocker_port->dev) != link_up) {
1447 if (link_up)
1448 rocker_port_link_up(rocker_port);
1449 else
1450 rocker_port_link_down(rocker_port);
1451 }
1452
1453 return 0;
1454 }
1455
1456 static int rocker_port_fdb(struct rocker_port *rocker_port,
1457 struct switchdev_trans *trans,
1458 const unsigned char *addr,
1459 __be16 vlan_id, int flags);
1460
1461 static int rocker_event_mac_vlan_seen(const struct rocker *rocker,
1462 const struct rocker_tlv *info)
1463 {
1464 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1465 unsigned int port_number;
1466 struct rocker_port *rocker_port;
1467 const unsigned char *addr;
1468 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1469 __be16 vlan_id;
1470
1471 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1472 if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1473 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1474 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1475 return -EIO;
1476 port_number =
1477 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1478 addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1479 vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1480
1481 if (port_number >= rocker->port_count)
1482 return -EINVAL;
1483
1484 rocker_port = rocker->ports[port_number];
1485
1486 if (rocker_port->stp_state != BR_STATE_LEARNING &&
1487 rocker_port->stp_state != BR_STATE_FORWARDING)
1488 return 0;
1489
1490 return rocker_port_fdb(rocker_port, NULL, addr, vlan_id, flags);
1491 }
1492
1493 static int rocker_event_process(const struct rocker *rocker,
1494 const struct rocker_desc_info *desc_info)
1495 {
1496 const struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1497 const struct rocker_tlv *info;
1498 u16 type;
1499
1500 rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1501 if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1502 !attrs[ROCKER_TLV_EVENT_INFO])
1503 return -EIO;
1504
1505 type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1506 info = attrs[ROCKER_TLV_EVENT_INFO];
1507
1508 switch (type) {
1509 case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1510 return rocker_event_link_change(rocker, info);
1511 case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1512 return rocker_event_mac_vlan_seen(rocker, info);
1513 }
1514
1515 return -EOPNOTSUPP;
1516 }
1517
1518 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1519 {
1520 struct rocker *rocker = dev_id;
1521 const struct pci_dev *pdev = rocker->pdev;
1522 const struct rocker_desc_info *desc_info;
1523 u32 credits = 0;
1524 int err;
1525
1526 while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1527 err = rocker_desc_err(desc_info);
1528 if (err) {
1529 dev_err(&pdev->dev, "event desc received with err %d\n",
1530 err);
1531 } else {
1532 err = rocker_event_process(rocker, desc_info);
1533 if (err)
1534 dev_err(&pdev->dev, "event processing failed with err %d\n",
1535 err);
1536 }
1537 rocker_desc_gen_clear(desc_info);
1538 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1539 credits++;
1540 }
1541 rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1542
1543 return IRQ_HANDLED;
1544 }
1545
1546 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1547 {
1548 struct rocker_port *rocker_port = dev_id;
1549
1550 napi_schedule(&rocker_port->napi_tx);
1551 return IRQ_HANDLED;
1552 }
1553
1554 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1555 {
1556 struct rocker_port *rocker_port = dev_id;
1557
1558 napi_schedule(&rocker_port->napi_rx);
1559 return IRQ_HANDLED;
1560 }
1561
1562 /********************
1563 * Command interface
1564 ********************/
1565
1566 typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
1567 struct rocker_desc_info *desc_info,
1568 void *priv);
1569
1570 typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
1571 const struct rocker_desc_info *desc_info,
1572 void *priv);
1573
1574 static int rocker_cmd_exec(struct rocker_port *rocker_port,
1575 struct switchdev_trans *trans, int flags,
1576 rocker_cmd_prep_cb_t prepare, void *prepare_priv,
1577 rocker_cmd_proc_cb_t process, void *process_priv)
1578 {
1579 struct rocker *rocker = rocker_port->rocker;
1580 struct rocker_desc_info *desc_info;
1581 struct rocker_wait *wait;
1582 bool nowait = !!(flags & ROCKER_OP_FLAG_NOWAIT);
1583 unsigned long lock_flags;
1584 int err;
1585
1586 wait = rocker_wait_create(rocker_port, trans, flags);
1587 if (!wait)
1588 return -ENOMEM;
1589 wait->nowait = nowait;
1590
1591 spin_lock_irqsave(&rocker->cmd_ring_lock, lock_flags);
1592
1593 desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1594 if (!desc_info) {
1595 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1596 err = -EAGAIN;
1597 goto out;
1598 }
1599
1600 err = prepare(rocker_port, desc_info, prepare_priv);
1601 if (err) {
1602 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1603 goto out;
1604 }
1605
1606 rocker_desc_cookie_ptr_set(desc_info, wait);
1607
1608 if (!switchdev_trans_ph_prepare(trans))
1609 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1610
1611 spin_unlock_irqrestore(&rocker->cmd_ring_lock, lock_flags);
1612
1613 if (nowait)
1614 return 0;
1615
1616 if (!switchdev_trans_ph_prepare(trans))
1617 if (!rocker_wait_event_timeout(wait, HZ / 10))
1618 return -EIO;
1619
1620 err = rocker_desc_err(desc_info);
1621 if (err)
1622 return err;
1623
1624 if (process)
1625 err = process(rocker_port, desc_info, process_priv);
1626
1627 rocker_desc_gen_clear(desc_info);
1628 out:
1629 rocker_wait_destroy(trans, wait);
1630 return err;
1631 }
1632
1633 static int
1634 rocker_cmd_get_port_settings_prep(const struct rocker_port *rocker_port,
1635 struct rocker_desc_info *desc_info,
1636 void *priv)
1637 {
1638 struct rocker_tlv *cmd_info;
1639
1640 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1641 ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1642 return -EMSGSIZE;
1643 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1644 if (!cmd_info)
1645 return -EMSGSIZE;
1646 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1647 rocker_port->pport))
1648 return -EMSGSIZE;
1649 rocker_tlv_nest_end(desc_info, cmd_info);
1650 return 0;
1651 }
1652
1653 static int
1654 rocker_cmd_get_port_settings_ethtool_proc(const struct rocker_port *rocker_port,
1655 const struct rocker_desc_info *desc_info,
1656 void *priv)
1657 {
1658 struct ethtool_cmd *ecmd = priv;
1659 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1660 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1661 u32 speed;
1662 u8 duplex;
1663 u8 autoneg;
1664
1665 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1666 if (!attrs[ROCKER_TLV_CMD_INFO])
1667 return -EIO;
1668
1669 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1670 attrs[ROCKER_TLV_CMD_INFO]);
1671 if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1672 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1673 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1674 return -EIO;
1675
1676 speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1677 duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1678 autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1679
1680 ecmd->transceiver = XCVR_INTERNAL;
1681 ecmd->supported = SUPPORTED_TP;
1682 ecmd->phy_address = 0xff;
1683 ecmd->port = PORT_TP;
1684 ethtool_cmd_speed_set(ecmd, speed);
1685 ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1686 ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1687
1688 return 0;
1689 }
1690
1691 static int
1692 rocker_cmd_get_port_settings_macaddr_proc(const struct rocker_port *rocker_port,
1693 const struct rocker_desc_info *desc_info,
1694 void *priv)
1695 {
1696 unsigned char *macaddr = priv;
1697 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1698 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1699 const struct rocker_tlv *attr;
1700
1701 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1702 if (!attrs[ROCKER_TLV_CMD_INFO])
1703 return -EIO;
1704
1705 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1706 attrs[ROCKER_TLV_CMD_INFO]);
1707 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1708 if (!attr)
1709 return -EIO;
1710
1711 if (rocker_tlv_len(attr) != ETH_ALEN)
1712 return -EINVAL;
1713
1714 ether_addr_copy(macaddr, rocker_tlv_data(attr));
1715 return 0;
1716 }
1717
1718 struct port_name {
1719 char *buf;
1720 size_t len;
1721 };
1722
1723 static int
1724 rocker_cmd_get_port_settings_phys_name_proc(const struct rocker_port *rocker_port,
1725 const struct rocker_desc_info *desc_info,
1726 void *priv)
1727 {
1728 const struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1729 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1730 struct port_name *name = priv;
1731 const struct rocker_tlv *attr;
1732 size_t i, j, len;
1733 const char *str;
1734
1735 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1736 if (!attrs[ROCKER_TLV_CMD_INFO])
1737 return -EIO;
1738
1739 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1740 attrs[ROCKER_TLV_CMD_INFO]);
1741 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1742 if (!attr)
1743 return -EIO;
1744
1745 len = min_t(size_t, rocker_tlv_len(attr), name->len);
1746 str = rocker_tlv_data(attr);
1747
1748 /* make sure name only contains alphanumeric characters */
1749 for (i = j = 0; i < len; ++i) {
1750 if (isalnum(str[i])) {
1751 name->buf[j] = str[i];
1752 j++;
1753 }
1754 }
1755
1756 if (j == 0)
1757 return -EIO;
1758
1759 name->buf[j] = '\0';
1760
1761 return 0;
1762 }
1763
1764 static int
1765 rocker_cmd_set_port_settings_ethtool_prep(const struct rocker_port *rocker_port,
1766 struct rocker_desc_info *desc_info,
1767 void *priv)
1768 {
1769 struct ethtool_cmd *ecmd = priv;
1770 struct rocker_tlv *cmd_info;
1771
1772 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1773 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1774 return -EMSGSIZE;
1775 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1776 if (!cmd_info)
1777 return -EMSGSIZE;
1778 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1779 rocker_port->pport))
1780 return -EMSGSIZE;
1781 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1782 ethtool_cmd_speed(ecmd)))
1783 return -EMSGSIZE;
1784 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1785 ecmd->duplex))
1786 return -EMSGSIZE;
1787 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1788 ecmd->autoneg))
1789 return -EMSGSIZE;
1790 rocker_tlv_nest_end(desc_info, cmd_info);
1791 return 0;
1792 }
1793
1794 static int
1795 rocker_cmd_set_port_settings_macaddr_prep(const struct rocker_port *rocker_port,
1796 struct rocker_desc_info *desc_info,
1797 void *priv)
1798 {
1799 const unsigned char *macaddr = priv;
1800 struct rocker_tlv *cmd_info;
1801
1802 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1803 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1804 return -EMSGSIZE;
1805 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1806 if (!cmd_info)
1807 return -EMSGSIZE;
1808 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1809 rocker_port->pport))
1810 return -EMSGSIZE;
1811 if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1812 ETH_ALEN, macaddr))
1813 return -EMSGSIZE;
1814 rocker_tlv_nest_end(desc_info, cmd_info);
1815 return 0;
1816 }
1817
1818 static int
1819 rocker_cmd_set_port_settings_mtu_prep(const struct rocker_port *rocker_port,
1820 struct rocker_desc_info *desc_info,
1821 void *priv)
1822 {
1823 int mtu = *(int *)priv;
1824 struct rocker_tlv *cmd_info;
1825
1826 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1827 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1828 return -EMSGSIZE;
1829 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1830 if (!cmd_info)
1831 return -EMSGSIZE;
1832 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1833 rocker_port->pport))
1834 return -EMSGSIZE;
1835 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MTU,
1836 mtu))
1837 return -EMSGSIZE;
1838 rocker_tlv_nest_end(desc_info, cmd_info);
1839 return 0;
1840 }
1841
1842 static int
1843 rocker_cmd_set_port_learning_prep(const struct rocker_port *rocker_port,
1844 struct rocker_desc_info *desc_info,
1845 void *priv)
1846 {
1847 struct rocker_tlv *cmd_info;
1848
1849 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1850 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1851 return -EMSGSIZE;
1852 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1853 if (!cmd_info)
1854 return -EMSGSIZE;
1855 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1856 rocker_port->pport))
1857 return -EMSGSIZE;
1858 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1859 !!(rocker_port->brport_flags & BR_LEARNING)))
1860 return -EMSGSIZE;
1861 rocker_tlv_nest_end(desc_info, cmd_info);
1862 return 0;
1863 }
1864
1865 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1866 struct ethtool_cmd *ecmd)
1867 {
1868 return rocker_cmd_exec(rocker_port, NULL, 0,
1869 rocker_cmd_get_port_settings_prep, NULL,
1870 rocker_cmd_get_port_settings_ethtool_proc,
1871 ecmd);
1872 }
1873
1874 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1875 unsigned char *macaddr)
1876 {
1877 return rocker_cmd_exec(rocker_port, NULL, 0,
1878 rocker_cmd_get_port_settings_prep, NULL,
1879 rocker_cmd_get_port_settings_macaddr_proc,
1880 macaddr);
1881 }
1882
1883 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1884 struct ethtool_cmd *ecmd)
1885 {
1886 return rocker_cmd_exec(rocker_port, NULL, 0,
1887 rocker_cmd_set_port_settings_ethtool_prep,
1888 ecmd, NULL, NULL);
1889 }
1890
1891 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1892 unsigned char *macaddr)
1893 {
1894 return rocker_cmd_exec(rocker_port, NULL, 0,
1895 rocker_cmd_set_port_settings_macaddr_prep,
1896 macaddr, NULL, NULL);
1897 }
1898
1899 static int rocker_cmd_set_port_settings_mtu(struct rocker_port *rocker_port,
1900 int mtu)
1901 {
1902 return rocker_cmd_exec(rocker_port, NULL, 0,
1903 rocker_cmd_set_port_settings_mtu_prep,
1904 &mtu, NULL, NULL);
1905 }
1906
1907 static int rocker_port_set_learning(struct rocker_port *rocker_port,
1908 struct switchdev_trans *trans)
1909 {
1910 return rocker_cmd_exec(rocker_port, trans, 0,
1911 rocker_cmd_set_port_learning_prep,
1912 NULL, NULL, NULL);
1913 }
1914
1915 static int
1916 rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1917 const struct rocker_flow_tbl_entry *entry)
1918 {
1919 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1920 entry->key.ig_port.in_pport))
1921 return -EMSGSIZE;
1922 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1923 entry->key.ig_port.in_pport_mask))
1924 return -EMSGSIZE;
1925 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1926 entry->key.ig_port.goto_tbl))
1927 return -EMSGSIZE;
1928
1929 return 0;
1930 }
1931
1932 static int
1933 rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1934 const struct rocker_flow_tbl_entry *entry)
1935 {
1936 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1937 entry->key.vlan.in_pport))
1938 return -EMSGSIZE;
1939 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1940 entry->key.vlan.vlan_id))
1941 return -EMSGSIZE;
1942 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1943 entry->key.vlan.vlan_id_mask))
1944 return -EMSGSIZE;
1945 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1946 entry->key.vlan.goto_tbl))
1947 return -EMSGSIZE;
1948 if (entry->key.vlan.untagged &&
1949 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1950 entry->key.vlan.new_vlan_id))
1951 return -EMSGSIZE;
1952
1953 return 0;
1954 }
1955
1956 static int
1957 rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1958 const struct rocker_flow_tbl_entry *entry)
1959 {
1960 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1961 entry->key.term_mac.in_pport))
1962 return -EMSGSIZE;
1963 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1964 entry->key.term_mac.in_pport_mask))
1965 return -EMSGSIZE;
1966 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1967 entry->key.term_mac.eth_type))
1968 return -EMSGSIZE;
1969 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1970 ETH_ALEN, entry->key.term_mac.eth_dst))
1971 return -EMSGSIZE;
1972 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1973 ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1974 return -EMSGSIZE;
1975 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1976 entry->key.term_mac.vlan_id))
1977 return -EMSGSIZE;
1978 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1979 entry->key.term_mac.vlan_id_mask))
1980 return -EMSGSIZE;
1981 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1982 entry->key.term_mac.goto_tbl))
1983 return -EMSGSIZE;
1984 if (entry->key.term_mac.copy_to_cpu &&
1985 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1986 entry->key.term_mac.copy_to_cpu))
1987 return -EMSGSIZE;
1988
1989 return 0;
1990 }
1991
1992 static int
1993 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1994 const struct rocker_flow_tbl_entry *entry)
1995 {
1996 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1997 entry->key.ucast_routing.eth_type))
1998 return -EMSGSIZE;
1999 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
2000 entry->key.ucast_routing.dst4))
2001 return -EMSGSIZE;
2002 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
2003 entry->key.ucast_routing.dst4_mask))
2004 return -EMSGSIZE;
2005 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2006 entry->key.ucast_routing.goto_tbl))
2007 return -EMSGSIZE;
2008 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2009 entry->key.ucast_routing.group_id))
2010 return -EMSGSIZE;
2011
2012 return 0;
2013 }
2014
2015 static int
2016 rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
2017 const struct rocker_flow_tbl_entry *entry)
2018 {
2019 if (entry->key.bridge.has_eth_dst &&
2020 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2021 ETH_ALEN, entry->key.bridge.eth_dst))
2022 return -EMSGSIZE;
2023 if (entry->key.bridge.has_eth_dst_mask &&
2024 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2025 ETH_ALEN, entry->key.bridge.eth_dst_mask))
2026 return -EMSGSIZE;
2027 if (entry->key.bridge.vlan_id &&
2028 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2029 entry->key.bridge.vlan_id))
2030 return -EMSGSIZE;
2031 if (entry->key.bridge.tunnel_id &&
2032 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
2033 entry->key.bridge.tunnel_id))
2034 return -EMSGSIZE;
2035 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
2036 entry->key.bridge.goto_tbl))
2037 return -EMSGSIZE;
2038 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2039 entry->key.bridge.group_id))
2040 return -EMSGSIZE;
2041 if (entry->key.bridge.copy_to_cpu &&
2042 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
2043 entry->key.bridge.copy_to_cpu))
2044 return -EMSGSIZE;
2045
2046 return 0;
2047 }
2048
2049 static int
2050 rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
2051 const struct rocker_flow_tbl_entry *entry)
2052 {
2053 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
2054 entry->key.acl.in_pport))
2055 return -EMSGSIZE;
2056 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
2057 entry->key.acl.in_pport_mask))
2058 return -EMSGSIZE;
2059 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2060 ETH_ALEN, entry->key.acl.eth_src))
2061 return -EMSGSIZE;
2062 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
2063 ETH_ALEN, entry->key.acl.eth_src_mask))
2064 return -EMSGSIZE;
2065 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2066 ETH_ALEN, entry->key.acl.eth_dst))
2067 return -EMSGSIZE;
2068 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
2069 ETH_ALEN, entry->key.acl.eth_dst_mask))
2070 return -EMSGSIZE;
2071 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
2072 entry->key.acl.eth_type))
2073 return -EMSGSIZE;
2074 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2075 entry->key.acl.vlan_id))
2076 return -EMSGSIZE;
2077 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
2078 entry->key.acl.vlan_id_mask))
2079 return -EMSGSIZE;
2080
2081 switch (ntohs(entry->key.acl.eth_type)) {
2082 case ETH_P_IP:
2083 case ETH_P_IPV6:
2084 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
2085 entry->key.acl.ip_proto))
2086 return -EMSGSIZE;
2087 if (rocker_tlv_put_u8(desc_info,
2088 ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
2089 entry->key.acl.ip_proto_mask))
2090 return -EMSGSIZE;
2091 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
2092 entry->key.acl.ip_tos & 0x3f))
2093 return -EMSGSIZE;
2094 if (rocker_tlv_put_u8(desc_info,
2095 ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
2096 entry->key.acl.ip_tos_mask & 0x3f))
2097 return -EMSGSIZE;
2098 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
2099 (entry->key.acl.ip_tos & 0xc0) >> 6))
2100 return -EMSGSIZE;
2101 if (rocker_tlv_put_u8(desc_info,
2102 ROCKER_TLV_OF_DPA_IP_ECN_MASK,
2103 (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
2104 return -EMSGSIZE;
2105 break;
2106 }
2107
2108 if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
2109 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2110 entry->key.acl.group_id))
2111 return -EMSGSIZE;
2112
2113 return 0;
2114 }
2115
2116 static int rocker_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
2117 struct rocker_desc_info *desc_info,
2118 void *priv)
2119 {
2120 const struct rocker_flow_tbl_entry *entry = priv;
2121 struct rocker_tlv *cmd_info;
2122 int err = 0;
2123
2124 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2125 return -EMSGSIZE;
2126 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2127 if (!cmd_info)
2128 return -EMSGSIZE;
2129 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2130 entry->key.tbl_id))
2131 return -EMSGSIZE;
2132 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2133 entry->key.priority))
2134 return -EMSGSIZE;
2135 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2136 return -EMSGSIZE;
2137 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2138 entry->cookie))
2139 return -EMSGSIZE;
2140
2141 switch (entry->key.tbl_id) {
2142 case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2143 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2144 break;
2145 case ROCKER_OF_DPA_TABLE_ID_VLAN:
2146 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2147 break;
2148 case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2149 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2150 break;
2151 case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2152 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2153 break;
2154 case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2155 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2156 break;
2157 case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2158 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2159 break;
2160 default:
2161 err = -ENOTSUPP;
2162 break;
2163 }
2164
2165 if (err)
2166 return err;
2167
2168 rocker_tlv_nest_end(desc_info, cmd_info);
2169
2170 return 0;
2171 }
2172
2173 static int rocker_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
2174 struct rocker_desc_info *desc_info,
2175 void *priv)
2176 {
2177 const struct rocker_flow_tbl_entry *entry = priv;
2178 struct rocker_tlv *cmd_info;
2179
2180 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2181 return -EMSGSIZE;
2182 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2183 if (!cmd_info)
2184 return -EMSGSIZE;
2185 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2186 entry->cookie))
2187 return -EMSGSIZE;
2188 rocker_tlv_nest_end(desc_info, cmd_info);
2189
2190 return 0;
2191 }
2192
2193 static int
2194 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2195 struct rocker_group_tbl_entry *entry)
2196 {
2197 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2198 ROCKER_GROUP_PORT_GET(entry->group_id)))
2199 return -EMSGSIZE;
2200 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2201 entry->l2_interface.pop_vlan))
2202 return -EMSGSIZE;
2203
2204 return 0;
2205 }
2206
2207 static int
2208 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2209 const struct rocker_group_tbl_entry *entry)
2210 {
2211 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2212 entry->l2_rewrite.group_id))
2213 return -EMSGSIZE;
2214 if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2215 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2216 ETH_ALEN, entry->l2_rewrite.eth_src))
2217 return -EMSGSIZE;
2218 if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2219 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2220 ETH_ALEN, entry->l2_rewrite.eth_dst))
2221 return -EMSGSIZE;
2222 if (entry->l2_rewrite.vlan_id &&
2223 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2224 entry->l2_rewrite.vlan_id))
2225 return -EMSGSIZE;
2226
2227 return 0;
2228 }
2229
2230 static int
2231 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2232 const struct rocker_group_tbl_entry *entry)
2233 {
2234 int i;
2235 struct rocker_tlv *group_ids;
2236
2237 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2238 entry->group_count))
2239 return -EMSGSIZE;
2240
2241 group_ids = rocker_tlv_nest_start(desc_info,
2242 ROCKER_TLV_OF_DPA_GROUP_IDS);
2243 if (!group_ids)
2244 return -EMSGSIZE;
2245
2246 for (i = 0; i < entry->group_count; i++)
2247 /* Note TLV array is 1-based */
2248 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2249 return -EMSGSIZE;
2250
2251 rocker_tlv_nest_end(desc_info, group_ids);
2252
2253 return 0;
2254 }
2255
2256 static int
2257 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2258 const struct rocker_group_tbl_entry *entry)
2259 {
2260 if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2261 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2262 ETH_ALEN, entry->l3_unicast.eth_src))
2263 return -EMSGSIZE;
2264 if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2265 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2266 ETH_ALEN, entry->l3_unicast.eth_dst))
2267 return -EMSGSIZE;
2268 if (entry->l3_unicast.vlan_id &&
2269 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2270 entry->l3_unicast.vlan_id))
2271 return -EMSGSIZE;
2272 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2273 entry->l3_unicast.ttl_check))
2274 return -EMSGSIZE;
2275 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2276 entry->l3_unicast.group_id))
2277 return -EMSGSIZE;
2278
2279 return 0;
2280 }
2281
2282 static int rocker_cmd_group_tbl_add(const struct rocker_port *rocker_port,
2283 struct rocker_desc_info *desc_info,
2284 void *priv)
2285 {
2286 struct rocker_group_tbl_entry *entry = priv;
2287 struct rocker_tlv *cmd_info;
2288 int err = 0;
2289
2290 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2291 return -EMSGSIZE;
2292 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2293 if (!cmd_info)
2294 return -EMSGSIZE;
2295
2296 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2297 entry->group_id))
2298 return -EMSGSIZE;
2299
2300 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2301 case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2302 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2303 break;
2304 case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2305 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2306 break;
2307 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2308 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2309 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2310 break;
2311 case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2312 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2313 break;
2314 default:
2315 err = -ENOTSUPP;
2316 break;
2317 }
2318
2319 if (err)
2320 return err;
2321
2322 rocker_tlv_nest_end(desc_info, cmd_info);
2323
2324 return 0;
2325 }
2326
2327 static int rocker_cmd_group_tbl_del(const struct rocker_port *rocker_port,
2328 struct rocker_desc_info *desc_info,
2329 void *priv)
2330 {
2331 const struct rocker_group_tbl_entry *entry = priv;
2332 struct rocker_tlv *cmd_info;
2333
2334 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2335 return -EMSGSIZE;
2336 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2337 if (!cmd_info)
2338 return -EMSGSIZE;
2339 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2340 entry->group_id))
2341 return -EMSGSIZE;
2342 rocker_tlv_nest_end(desc_info, cmd_info);
2343
2344 return 0;
2345 }
2346
2347 /***************************************************
2348 * Flow, group, FDB, internal VLAN and neigh tables
2349 ***************************************************/
2350
2351 static int rocker_init_tbls(struct rocker *rocker)
2352 {
2353 hash_init(rocker->flow_tbl);
2354 spin_lock_init(&rocker->flow_tbl_lock);
2355
2356 hash_init(rocker->group_tbl);
2357 spin_lock_init(&rocker->group_tbl_lock);
2358
2359 hash_init(rocker->fdb_tbl);
2360 spin_lock_init(&rocker->fdb_tbl_lock);
2361
2362 hash_init(rocker->internal_vlan_tbl);
2363 spin_lock_init(&rocker->internal_vlan_tbl_lock);
2364
2365 hash_init(rocker->neigh_tbl);
2366 spin_lock_init(&rocker->neigh_tbl_lock);
2367
2368 return 0;
2369 }
2370
2371 static void rocker_free_tbls(struct rocker *rocker)
2372 {
2373 unsigned long flags;
2374 struct rocker_flow_tbl_entry *flow_entry;
2375 struct rocker_group_tbl_entry *group_entry;
2376 struct rocker_fdb_tbl_entry *fdb_entry;
2377 struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2378 struct rocker_neigh_tbl_entry *neigh_entry;
2379 struct hlist_node *tmp;
2380 int bkt;
2381
2382 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2383 hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2384 hash_del(&flow_entry->entry);
2385 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2386
2387 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2388 hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2389 hash_del(&group_entry->entry);
2390 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2391
2392 spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2393 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2394 hash_del(&fdb_entry->entry);
2395 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2396
2397 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2398 hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2399 tmp, internal_vlan_entry, entry)
2400 hash_del(&internal_vlan_entry->entry);
2401 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2402
2403 spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2404 hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2405 hash_del(&neigh_entry->entry);
2406 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2407 }
2408
2409 static struct rocker_flow_tbl_entry *
2410 rocker_flow_tbl_find(const struct rocker *rocker,
2411 const struct rocker_flow_tbl_entry *match)
2412 {
2413 struct rocker_flow_tbl_entry *found;
2414 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2415
2416 hash_for_each_possible(rocker->flow_tbl, found,
2417 entry, match->key_crc32) {
2418 if (memcmp(&found->key, &match->key, key_len) == 0)
2419 return found;
2420 }
2421
2422 return NULL;
2423 }
2424
2425 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2426 struct switchdev_trans *trans, int flags,
2427 struct rocker_flow_tbl_entry *match)
2428 {
2429 struct rocker *rocker = rocker_port->rocker;
2430 struct rocker_flow_tbl_entry *found;
2431 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2432 unsigned long lock_flags;
2433
2434 match->key_crc32 = crc32(~0, &match->key, key_len);
2435
2436 spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2437
2438 found = rocker_flow_tbl_find(rocker, match);
2439
2440 if (found) {
2441 match->cookie = found->cookie;
2442 if (!switchdev_trans_ph_prepare(trans))
2443 hash_del(&found->entry);
2444 rocker_port_kfree(trans, found);
2445 found = match;
2446 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2447 } else {
2448 found = match;
2449 found->cookie = rocker->flow_tbl_next_cookie++;
2450 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2451 }
2452
2453 if (!switchdev_trans_ph_prepare(trans))
2454 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2455
2456 spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2457
2458 return rocker_cmd_exec(rocker_port, trans, flags,
2459 rocker_cmd_flow_tbl_add, found, NULL, NULL);
2460 }
2461
2462 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2463 struct switchdev_trans *trans, int flags,
2464 struct rocker_flow_tbl_entry *match)
2465 {
2466 struct rocker *rocker = rocker_port->rocker;
2467 struct rocker_flow_tbl_entry *found;
2468 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2469 unsigned long lock_flags;
2470 int err = 0;
2471
2472 match->key_crc32 = crc32(~0, &match->key, key_len);
2473
2474 spin_lock_irqsave(&rocker->flow_tbl_lock, lock_flags);
2475
2476 found = rocker_flow_tbl_find(rocker, match);
2477
2478 if (found) {
2479 if (!switchdev_trans_ph_prepare(trans))
2480 hash_del(&found->entry);
2481 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2482 }
2483
2484 spin_unlock_irqrestore(&rocker->flow_tbl_lock, lock_flags);
2485
2486 rocker_port_kfree(trans, match);
2487
2488 if (found) {
2489 err = rocker_cmd_exec(rocker_port, trans, flags,
2490 rocker_cmd_flow_tbl_del,
2491 found, NULL, NULL);
2492 rocker_port_kfree(trans, found);
2493 }
2494
2495 return err;
2496 }
2497
2498 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2499 struct switchdev_trans *trans, int flags,
2500 struct rocker_flow_tbl_entry *entry)
2501 {
2502 if (flags & ROCKER_OP_FLAG_REMOVE)
2503 return rocker_flow_tbl_del(rocker_port, trans, flags, entry);
2504 else
2505 return rocker_flow_tbl_add(rocker_port, trans, flags, entry);
2506 }
2507
2508 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2509 struct switchdev_trans *trans, int flags,
2510 u32 in_pport, u32 in_pport_mask,
2511 enum rocker_of_dpa_table_id goto_tbl)
2512 {
2513 struct rocker_flow_tbl_entry *entry;
2514
2515 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2516 if (!entry)
2517 return -ENOMEM;
2518
2519 entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2520 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2521 entry->key.ig_port.in_pport = in_pport;
2522 entry->key.ig_port.in_pport_mask = in_pport_mask;
2523 entry->key.ig_port.goto_tbl = goto_tbl;
2524
2525 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2526 }
2527
2528 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2529 struct switchdev_trans *trans, int flags,
2530 u32 in_pport, __be16 vlan_id,
2531 __be16 vlan_id_mask,
2532 enum rocker_of_dpa_table_id goto_tbl,
2533 bool untagged, __be16 new_vlan_id)
2534 {
2535 struct rocker_flow_tbl_entry *entry;
2536
2537 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2538 if (!entry)
2539 return -ENOMEM;
2540
2541 entry->key.priority = ROCKER_PRIORITY_VLAN;
2542 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2543 entry->key.vlan.in_pport = in_pport;
2544 entry->key.vlan.vlan_id = vlan_id;
2545 entry->key.vlan.vlan_id_mask = vlan_id_mask;
2546 entry->key.vlan.goto_tbl = goto_tbl;
2547
2548 entry->key.vlan.untagged = untagged;
2549 entry->key.vlan.new_vlan_id = new_vlan_id;
2550
2551 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2552 }
2553
2554 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2555 struct switchdev_trans *trans,
2556 u32 in_pport, u32 in_pport_mask,
2557 __be16 eth_type, const u8 *eth_dst,
2558 const u8 *eth_dst_mask, __be16 vlan_id,
2559 __be16 vlan_id_mask, bool copy_to_cpu,
2560 int flags)
2561 {
2562 struct rocker_flow_tbl_entry *entry;
2563
2564 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2565 if (!entry)
2566 return -ENOMEM;
2567
2568 if (is_multicast_ether_addr(eth_dst)) {
2569 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2570 entry->key.term_mac.goto_tbl =
2571 ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2572 } else {
2573 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2574 entry->key.term_mac.goto_tbl =
2575 ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2576 }
2577
2578 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2579 entry->key.term_mac.in_pport = in_pport;
2580 entry->key.term_mac.in_pport_mask = in_pport_mask;
2581 entry->key.term_mac.eth_type = eth_type;
2582 ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2583 ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2584 entry->key.term_mac.vlan_id = vlan_id;
2585 entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2586 entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2587
2588 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2589 }
2590
2591 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2592 struct switchdev_trans *trans, int flags,
2593 const u8 *eth_dst, const u8 *eth_dst_mask,
2594 __be16 vlan_id, u32 tunnel_id,
2595 enum rocker_of_dpa_table_id goto_tbl,
2596 u32 group_id, bool copy_to_cpu)
2597 {
2598 struct rocker_flow_tbl_entry *entry;
2599 u32 priority;
2600 bool vlan_bridging = !!vlan_id;
2601 bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2602 bool wild = false;
2603
2604 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2605 if (!entry)
2606 return -ENOMEM;
2607
2608 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2609
2610 if (eth_dst) {
2611 entry->key.bridge.has_eth_dst = 1;
2612 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2613 }
2614 if (eth_dst_mask) {
2615 entry->key.bridge.has_eth_dst_mask = 1;
2616 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2617 if (!ether_addr_equal(eth_dst_mask, ff_mac))
2618 wild = true;
2619 }
2620
2621 priority = ROCKER_PRIORITY_UNKNOWN;
2622 if (vlan_bridging && dflt && wild)
2623 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2624 else if (vlan_bridging && dflt && !wild)
2625 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2626 else if (vlan_bridging && !dflt)
2627 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2628 else if (!vlan_bridging && dflt && wild)
2629 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2630 else if (!vlan_bridging && dflt && !wild)
2631 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2632 else if (!vlan_bridging && !dflt)
2633 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2634
2635 entry->key.priority = priority;
2636 entry->key.bridge.vlan_id = vlan_id;
2637 entry->key.bridge.tunnel_id = tunnel_id;
2638 entry->key.bridge.goto_tbl = goto_tbl;
2639 entry->key.bridge.group_id = group_id;
2640 entry->key.bridge.copy_to_cpu = copy_to_cpu;
2641
2642 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2643 }
2644
2645 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2646 struct switchdev_trans *trans,
2647 __be16 eth_type, __be32 dst,
2648 __be32 dst_mask, u32 priority,
2649 enum rocker_of_dpa_table_id goto_tbl,
2650 u32 group_id, int flags)
2651 {
2652 struct rocker_flow_tbl_entry *entry;
2653
2654 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2655 if (!entry)
2656 return -ENOMEM;
2657
2658 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2659 entry->key.priority = priority;
2660 entry->key.ucast_routing.eth_type = eth_type;
2661 entry->key.ucast_routing.dst4 = dst;
2662 entry->key.ucast_routing.dst4_mask = dst_mask;
2663 entry->key.ucast_routing.goto_tbl = goto_tbl;
2664 entry->key.ucast_routing.group_id = group_id;
2665 entry->key_len = offsetof(struct rocker_flow_tbl_key,
2666 ucast_routing.group_id);
2667
2668 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2669 }
2670
2671 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2672 struct switchdev_trans *trans, int flags,
2673 u32 in_pport, u32 in_pport_mask,
2674 const u8 *eth_src, const u8 *eth_src_mask,
2675 const u8 *eth_dst, const u8 *eth_dst_mask,
2676 __be16 eth_type, __be16 vlan_id,
2677 __be16 vlan_id_mask, u8 ip_proto,
2678 u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
2679 u32 group_id)
2680 {
2681 u32 priority;
2682 struct rocker_flow_tbl_entry *entry;
2683
2684 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2685 if (!entry)
2686 return -ENOMEM;
2687
2688 priority = ROCKER_PRIORITY_ACL_NORMAL;
2689 if (eth_dst && eth_dst_mask) {
2690 if (ether_addr_equal(eth_dst_mask, mcast_mac))
2691 priority = ROCKER_PRIORITY_ACL_DFLT;
2692 else if (is_link_local_ether_addr(eth_dst))
2693 priority = ROCKER_PRIORITY_ACL_CTRL;
2694 }
2695
2696 entry->key.priority = priority;
2697 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2698 entry->key.acl.in_pport = in_pport;
2699 entry->key.acl.in_pport_mask = in_pport_mask;
2700
2701 if (eth_src)
2702 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2703 if (eth_src_mask)
2704 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2705 if (eth_dst)
2706 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2707 if (eth_dst_mask)
2708 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2709
2710 entry->key.acl.eth_type = eth_type;
2711 entry->key.acl.vlan_id = vlan_id;
2712 entry->key.acl.vlan_id_mask = vlan_id_mask;
2713 entry->key.acl.ip_proto = ip_proto;
2714 entry->key.acl.ip_proto_mask = ip_proto_mask;
2715 entry->key.acl.ip_tos = ip_tos;
2716 entry->key.acl.ip_tos_mask = ip_tos_mask;
2717 entry->key.acl.group_id = group_id;
2718
2719 return rocker_flow_tbl_do(rocker_port, trans, flags, entry);
2720 }
2721
2722 static struct rocker_group_tbl_entry *
2723 rocker_group_tbl_find(const struct rocker *rocker,
2724 const struct rocker_group_tbl_entry *match)
2725 {
2726 struct rocker_group_tbl_entry *found;
2727
2728 hash_for_each_possible(rocker->group_tbl, found,
2729 entry, match->group_id) {
2730 if (found->group_id == match->group_id)
2731 return found;
2732 }
2733
2734 return NULL;
2735 }
2736
2737 static void rocker_group_tbl_entry_free(struct switchdev_trans *trans,
2738 struct rocker_group_tbl_entry *entry)
2739 {
2740 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2741 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2742 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2743 rocker_port_kfree(trans, entry->group_ids);
2744 break;
2745 default:
2746 break;
2747 }
2748 rocker_port_kfree(trans, entry);
2749 }
2750
2751 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2752 struct switchdev_trans *trans, int flags,
2753 struct rocker_group_tbl_entry *match)
2754 {
2755 struct rocker *rocker = rocker_port->rocker;
2756 struct rocker_group_tbl_entry *found;
2757 unsigned long lock_flags;
2758
2759 spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2760
2761 found = rocker_group_tbl_find(rocker, match);
2762
2763 if (found) {
2764 if (!switchdev_trans_ph_prepare(trans))
2765 hash_del(&found->entry);
2766 rocker_group_tbl_entry_free(trans, found);
2767 found = match;
2768 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2769 } else {
2770 found = match;
2771 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2772 }
2773
2774 if (!switchdev_trans_ph_prepare(trans))
2775 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2776
2777 spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2778
2779 return rocker_cmd_exec(rocker_port, trans, flags,
2780 rocker_cmd_group_tbl_add, found, NULL, NULL);
2781 }
2782
2783 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2784 struct switchdev_trans *trans, int flags,
2785 struct rocker_group_tbl_entry *match)
2786 {
2787 struct rocker *rocker = rocker_port->rocker;
2788 struct rocker_group_tbl_entry *found;
2789 unsigned long lock_flags;
2790 int err = 0;
2791
2792 spin_lock_irqsave(&rocker->group_tbl_lock, lock_flags);
2793
2794 found = rocker_group_tbl_find(rocker, match);
2795
2796 if (found) {
2797 if (!switchdev_trans_ph_prepare(trans))
2798 hash_del(&found->entry);
2799 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2800 }
2801
2802 spin_unlock_irqrestore(&rocker->group_tbl_lock, lock_flags);
2803
2804 rocker_group_tbl_entry_free(trans, match);
2805
2806 if (found) {
2807 err = rocker_cmd_exec(rocker_port, trans, flags,
2808 rocker_cmd_group_tbl_del,
2809 found, NULL, NULL);
2810 rocker_group_tbl_entry_free(trans, found);
2811 }
2812
2813 return err;
2814 }
2815
2816 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2817 struct switchdev_trans *trans, int flags,
2818 struct rocker_group_tbl_entry *entry)
2819 {
2820 if (flags & ROCKER_OP_FLAG_REMOVE)
2821 return rocker_group_tbl_del(rocker_port, trans, flags, entry);
2822 else
2823 return rocker_group_tbl_add(rocker_port, trans, flags, entry);
2824 }
2825
2826 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2827 struct switchdev_trans *trans, int flags,
2828 __be16 vlan_id, u32 out_pport,
2829 int pop_vlan)
2830 {
2831 struct rocker_group_tbl_entry *entry;
2832
2833 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2834 if (!entry)
2835 return -ENOMEM;
2836
2837 entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2838 entry->l2_interface.pop_vlan = pop_vlan;
2839
2840 return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2841 }
2842
2843 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2844 struct switchdev_trans *trans,
2845 int flags, u8 group_count,
2846 const u32 *group_ids, u32 group_id)
2847 {
2848 struct rocker_group_tbl_entry *entry;
2849
2850 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2851 if (!entry)
2852 return -ENOMEM;
2853
2854 entry->group_id = group_id;
2855 entry->group_count = group_count;
2856
2857 entry->group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
2858 group_count, sizeof(u32));
2859 if (!entry->group_ids) {
2860 rocker_port_kfree(trans, entry);
2861 return -ENOMEM;
2862 }
2863 memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2864
2865 return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2866 }
2867
2868 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2869 struct switchdev_trans *trans, int flags,
2870 __be16 vlan_id, u8 group_count,
2871 const u32 *group_ids, u32 group_id)
2872 {
2873 return rocker_group_l2_fan_out(rocker_port, trans, flags,
2874 group_count, group_ids,
2875 group_id);
2876 }
2877
2878 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2879 struct switchdev_trans *trans, int flags,
2880 u32 index, const u8 *src_mac, const u8 *dst_mac,
2881 __be16 vlan_id, bool ttl_check, u32 pport)
2882 {
2883 struct rocker_group_tbl_entry *entry;
2884
2885 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2886 if (!entry)
2887 return -ENOMEM;
2888
2889 entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2890 if (src_mac)
2891 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2892 if (dst_mac)
2893 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2894 entry->l3_unicast.vlan_id = vlan_id;
2895 entry->l3_unicast.ttl_check = ttl_check;
2896 entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2897
2898 return rocker_group_tbl_do(rocker_port, trans, flags, entry);
2899 }
2900
2901 static struct rocker_neigh_tbl_entry *
2902 rocker_neigh_tbl_find(const struct rocker *rocker, __be32 ip_addr)
2903 {
2904 struct rocker_neigh_tbl_entry *found;
2905
2906 hash_for_each_possible(rocker->neigh_tbl, found,
2907 entry, be32_to_cpu(ip_addr))
2908 if (found->ip_addr == ip_addr)
2909 return found;
2910
2911 return NULL;
2912 }
2913
2914 static void _rocker_neigh_add(struct rocker *rocker,
2915 struct switchdev_trans *trans,
2916 struct rocker_neigh_tbl_entry *entry)
2917 {
2918 if (!switchdev_trans_ph_commit(trans))
2919 entry->index = rocker->neigh_tbl_next_index++;
2920 if (switchdev_trans_ph_prepare(trans))
2921 return;
2922 entry->ref_count++;
2923 hash_add(rocker->neigh_tbl, &entry->entry,
2924 be32_to_cpu(entry->ip_addr));
2925 }
2926
2927 static void _rocker_neigh_del(struct switchdev_trans *trans,
2928 struct rocker_neigh_tbl_entry *entry)
2929 {
2930 if (switchdev_trans_ph_prepare(trans))
2931 return;
2932 if (--entry->ref_count == 0) {
2933 hash_del(&entry->entry);
2934 rocker_port_kfree(trans, entry);
2935 }
2936 }
2937
2938 static void _rocker_neigh_update(struct rocker_neigh_tbl_entry *entry,
2939 struct switchdev_trans *trans,
2940 const u8 *eth_dst, bool ttl_check)
2941 {
2942 if (eth_dst) {
2943 ether_addr_copy(entry->eth_dst, eth_dst);
2944 entry->ttl_check = ttl_check;
2945 } else if (!switchdev_trans_ph_prepare(trans)) {
2946 entry->ref_count++;
2947 }
2948 }
2949
2950 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2951 struct switchdev_trans *trans,
2952 int flags, __be32 ip_addr, const u8 *eth_dst)
2953 {
2954 struct rocker *rocker = rocker_port->rocker;
2955 struct rocker_neigh_tbl_entry *entry;
2956 struct rocker_neigh_tbl_entry *found;
2957 unsigned long lock_flags;
2958 __be16 eth_type = htons(ETH_P_IP);
2959 enum rocker_of_dpa_table_id goto_tbl =
2960 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2961 u32 group_id;
2962 u32 priority = 0;
2963 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2964 bool updating;
2965 bool removing;
2966 int err = 0;
2967
2968 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
2969 if (!entry)
2970 return -ENOMEM;
2971
2972 spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2973
2974 found = rocker_neigh_tbl_find(rocker, ip_addr);
2975
2976 updating = found && adding;
2977 removing = found && !adding;
2978 adding = !found && adding;
2979
2980 if (adding) {
2981 entry->ip_addr = ip_addr;
2982 entry->dev = rocker_port->dev;
2983 ether_addr_copy(entry->eth_dst, eth_dst);
2984 entry->ttl_check = true;
2985 _rocker_neigh_add(rocker, trans, entry);
2986 } else if (removing) {
2987 memcpy(entry, found, sizeof(*entry));
2988 _rocker_neigh_del(trans, found);
2989 } else if (updating) {
2990 _rocker_neigh_update(found, trans, eth_dst, true);
2991 memcpy(entry, found, sizeof(*entry));
2992 } else {
2993 err = -ENOENT;
2994 }
2995
2996 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2997
2998 if (err)
2999 goto err_out;
3000
3001 /* For each active neighbor, we have an L3 unicast group and
3002 * a /32 route to the neighbor, which uses the L3 unicast
3003 * group. The L3 unicast group can also be referred to by
3004 * other routes' nexthops.
3005 */
3006
3007 err = rocker_group_l3_unicast(rocker_port, trans, flags,
3008 entry->index,
3009 rocker_port->dev->dev_addr,
3010 entry->eth_dst,
3011 rocker_port->internal_vlan_id,
3012 entry->ttl_check,
3013 rocker_port->pport);
3014 if (err) {
3015 netdev_err(rocker_port->dev,
3016 "Error (%d) L3 unicast group index %d\n",
3017 err, entry->index);
3018 goto err_out;
3019 }
3020
3021 if (adding || removing) {
3022 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
3023 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans,
3024 eth_type, ip_addr,
3025 inet_make_mask(32),
3026 priority, goto_tbl,
3027 group_id, flags);
3028
3029 if (err)
3030 netdev_err(rocker_port->dev,
3031 "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
3032 err, &entry->ip_addr, group_id);
3033 }
3034
3035 err_out:
3036 if (!adding)
3037 rocker_port_kfree(trans, entry);
3038
3039 return err;
3040 }
3041
3042 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
3043 struct switchdev_trans *trans,
3044 __be32 ip_addr)
3045 {
3046 struct net_device *dev = rocker_port->dev;
3047 struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
3048 int err = 0;
3049
3050 if (!n) {
3051 n = neigh_create(&arp_tbl, &ip_addr, dev);
3052 if (IS_ERR(n))
3053 return IS_ERR(n);
3054 }
3055
3056 /* If the neigh is already resolved, then go ahead and
3057 * install the entry, otherwise start the ARP process to
3058 * resolve the neigh.
3059 */
3060
3061 if (n->nud_state & NUD_VALID)
3062 err = rocker_port_ipv4_neigh(rocker_port, trans, 0,
3063 ip_addr, n->ha);
3064 else
3065 neigh_event_send(n, NULL);
3066
3067 neigh_release(n);
3068 return err;
3069 }
3070
3071 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port,
3072 struct switchdev_trans *trans, int flags,
3073 __be32 ip_addr, u32 *index)
3074 {
3075 struct rocker *rocker = rocker_port->rocker;
3076 struct rocker_neigh_tbl_entry *entry;
3077 struct rocker_neigh_tbl_entry *found;
3078 unsigned long lock_flags;
3079 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3080 bool updating;
3081 bool removing;
3082 bool resolved = true;
3083 int err = 0;
3084
3085 entry = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*entry));
3086 if (!entry)
3087 return -ENOMEM;
3088
3089 spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
3090
3091 found = rocker_neigh_tbl_find(rocker, ip_addr);
3092 if (found)
3093 *index = found->index;
3094
3095 updating = found && adding;
3096 removing = found && !adding;
3097 adding = !found && adding;
3098
3099 if (adding) {
3100 entry->ip_addr = ip_addr;
3101 entry->dev = rocker_port->dev;
3102 _rocker_neigh_add(rocker, trans, entry);
3103 *index = entry->index;
3104 resolved = false;
3105 } else if (removing) {
3106 _rocker_neigh_del(trans, found);
3107 } else if (updating) {
3108 _rocker_neigh_update(found, trans, NULL, false);
3109 resolved = !is_zero_ether_addr(found->eth_dst);
3110 } else {
3111 err = -ENOENT;
3112 }
3113
3114 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
3115
3116 if (!adding)
3117 rocker_port_kfree(trans, entry);
3118
3119 if (err)
3120 return err;
3121
3122 /* Resolved means neigh ip_addr is resolved to neigh mac. */
3123
3124 if (!resolved)
3125 err = rocker_port_ipv4_resolve(rocker_port, trans, ip_addr);
3126
3127 return err;
3128 }
3129
3130 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3131 struct switchdev_trans *trans,
3132 int flags, __be16 vlan_id)
3133 {
3134 struct rocker_port *p;
3135 const struct rocker *rocker = rocker_port->rocker;
3136 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3137 u32 *group_ids;
3138 u8 group_count = 0;
3139 int err = 0;
3140 int i;
3141
3142 group_ids = rocker_port_kcalloc(rocker_port, trans, flags,
3143 rocker->port_count, sizeof(u32));
3144 if (!group_ids)
3145 return -ENOMEM;
3146
3147 /* Adjust the flood group for this VLAN. The flood group
3148 * references an L2 interface group for each port in this
3149 * VLAN.
3150 */
3151
3152 for (i = 0; i < rocker->port_count; i++) {
3153 p = rocker->ports[i];
3154 if (!p)
3155 continue;
3156 if (!rocker_port_is_bridged(p))
3157 continue;
3158 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3159 group_ids[group_count++] =
3160 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3161 }
3162 }
3163
3164 /* If there are no bridged ports in this VLAN, we're done */
3165 if (group_count == 0)
3166 goto no_ports_in_vlan;
3167
3168 err = rocker_group_l2_flood(rocker_port, trans, flags, vlan_id,
3169 group_count, group_ids, group_id);
3170 if (err)
3171 netdev_err(rocker_port->dev,
3172 "Error (%d) port VLAN l2 flood group\n", err);
3173
3174 no_ports_in_vlan:
3175 rocker_port_kfree(trans, group_ids);
3176 return err;
3177 }
3178
3179 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3180 struct switchdev_trans *trans, int flags,
3181 __be16 vlan_id, bool pop_vlan)
3182 {
3183 const struct rocker *rocker = rocker_port->rocker;
3184 struct rocker_port *p;
3185 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3186 u32 out_pport;
3187 int ref = 0;
3188 int err;
3189 int i;
3190
3191 /* An L2 interface group for this port in this VLAN, but
3192 * only when port STP state is LEARNING|FORWARDING.
3193 */
3194
3195 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3196 rocker_port->stp_state == BR_STATE_FORWARDING) {
3197 out_pport = rocker_port->pport;
3198 err = rocker_group_l2_interface(rocker_port, trans, flags,
3199 vlan_id, out_pport, pop_vlan);
3200 if (err) {
3201 netdev_err(rocker_port->dev,
3202 "Error (%d) port VLAN l2 group for pport %d\n",
3203 err, out_pport);
3204 return err;
3205 }
3206 }
3207
3208 /* An L2 interface group for this VLAN to CPU port.
3209 * Add when first port joins this VLAN and destroy when
3210 * last port leaves this VLAN.
3211 */
3212
3213 for (i = 0; i < rocker->port_count; i++) {
3214 p = rocker->ports[i];
3215 if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
3216 ref++;
3217 }
3218
3219 if ((!adding || ref != 1) && (adding || ref != 0))
3220 return 0;
3221
3222 out_pport = 0;
3223 err = rocker_group_l2_interface(rocker_port, trans, flags,
3224 vlan_id, out_pport, pop_vlan);
3225 if (err) {
3226 netdev_err(rocker_port->dev,
3227 "Error (%d) port VLAN l2 group for CPU port\n", err);
3228 return err;
3229 }
3230
3231 return 0;
3232 }
3233
3234 static struct rocker_ctrl {
3235 const u8 *eth_dst;
3236 const u8 *eth_dst_mask;
3237 __be16 eth_type;
3238 bool acl;
3239 bool bridge;
3240 bool term;
3241 bool copy_to_cpu;
3242 } rocker_ctrls[] = {
3243 [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3244 /* pass link local multicast pkts up to CPU for filtering */
3245 .eth_dst = ll_mac,
3246 .eth_dst_mask = ll_mask,
3247 .acl = true,
3248 },
3249 [ROCKER_CTRL_LOCAL_ARP] = {
3250 /* pass local ARP pkts up to CPU */
3251 .eth_dst = zero_mac,
3252 .eth_dst_mask = zero_mac,
3253 .eth_type = htons(ETH_P_ARP),
3254 .acl = true,
3255 },
3256 [ROCKER_CTRL_IPV4_MCAST] = {
3257 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3258 .eth_dst = ipv4_mcast,
3259 .eth_dst_mask = ipv4_mask,
3260 .eth_type = htons(ETH_P_IP),
3261 .term = true,
3262 .copy_to_cpu = true,
3263 },
3264 [ROCKER_CTRL_IPV6_MCAST] = {
3265 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3266 .eth_dst = ipv6_mcast,
3267 .eth_dst_mask = ipv6_mask,
3268 .eth_type = htons(ETH_P_IPV6),
3269 .term = true,
3270 .copy_to_cpu = true,
3271 },
3272 [ROCKER_CTRL_DFLT_BRIDGING] = {
3273 /* flood any pkts on vlan */
3274 .bridge = true,
3275 .copy_to_cpu = true,
3276 },
3277 [ROCKER_CTRL_DFLT_OVS] = {
3278 /* pass all pkts up to CPU */
3279 .eth_dst = zero_mac,
3280 .eth_dst_mask = zero_mac,
3281 .acl = true,
3282 },
3283 };
3284
3285 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3286 struct switchdev_trans *trans, int flags,
3287 const struct rocker_ctrl *ctrl, __be16 vlan_id)
3288 {
3289 u32 in_pport = rocker_port->pport;
3290 u32 in_pport_mask = 0xffffffff;
3291 u32 out_pport = 0;
3292 const u8 *eth_src = NULL;
3293 const u8 *eth_src_mask = NULL;
3294 __be16 vlan_id_mask = htons(0xffff);
3295 u8 ip_proto = 0;
3296 u8 ip_proto_mask = 0;
3297 u8 ip_tos = 0;
3298 u8 ip_tos_mask = 0;
3299 u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3300 int err;
3301
3302 err = rocker_flow_tbl_acl(rocker_port, trans, flags,
3303 in_pport, in_pport_mask,
3304 eth_src, eth_src_mask,
3305 ctrl->eth_dst, ctrl->eth_dst_mask,
3306 ctrl->eth_type,
3307 vlan_id, vlan_id_mask,
3308 ip_proto, ip_proto_mask,
3309 ip_tos, ip_tos_mask,
3310 group_id);
3311
3312 if (err)
3313 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3314
3315 return err;
3316 }
3317
3318 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3319 struct switchdev_trans *trans,
3320 int flags,
3321 const struct rocker_ctrl *ctrl,
3322 __be16 vlan_id)
3323 {
3324 enum rocker_of_dpa_table_id goto_tbl =
3325 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3326 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3327 u32 tunnel_id = 0;
3328 int err;
3329
3330 if (!rocker_port_is_bridged(rocker_port))
3331 return 0;
3332
3333 err = rocker_flow_tbl_bridge(rocker_port, trans, flags,
3334 ctrl->eth_dst, ctrl->eth_dst_mask,
3335 vlan_id, tunnel_id,
3336 goto_tbl, group_id, ctrl->copy_to_cpu);
3337
3338 if (err)
3339 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3340
3341 return err;
3342 }
3343
3344 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3345 struct switchdev_trans *trans, int flags,
3346 const struct rocker_ctrl *ctrl, __be16 vlan_id)
3347 {
3348 u32 in_pport_mask = 0xffffffff;
3349 __be16 vlan_id_mask = htons(0xffff);
3350 int err;
3351
3352 if (ntohs(vlan_id) == 0)
3353 vlan_id = rocker_port->internal_vlan_id;
3354
3355 err = rocker_flow_tbl_term_mac(rocker_port, trans,
3356 rocker_port->pport, in_pport_mask,
3357 ctrl->eth_type, ctrl->eth_dst,
3358 ctrl->eth_dst_mask, vlan_id,
3359 vlan_id_mask, ctrl->copy_to_cpu,
3360 flags);
3361
3362 if (err)
3363 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3364
3365 return err;
3366 }
3367
3368 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port,
3369 struct switchdev_trans *trans, int flags,
3370 const struct rocker_ctrl *ctrl, __be16 vlan_id)
3371 {
3372 if (ctrl->acl)
3373 return rocker_port_ctrl_vlan_acl(rocker_port, trans, flags,
3374 ctrl, vlan_id);
3375 if (ctrl->bridge)
3376 return rocker_port_ctrl_vlan_bridge(rocker_port, trans, flags,
3377 ctrl, vlan_id);
3378
3379 if (ctrl->term)
3380 return rocker_port_ctrl_vlan_term(rocker_port, trans, flags,
3381 ctrl, vlan_id);
3382
3383 return -EOPNOTSUPP;
3384 }
3385
3386 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3387 struct switchdev_trans *trans, int flags,
3388 __be16 vlan_id)
3389 {
3390 int err = 0;
3391 int i;
3392
3393 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3394 if (rocker_port->ctrls[i]) {
3395 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3396 &rocker_ctrls[i], vlan_id);
3397 if (err)
3398 return err;
3399 }
3400 }
3401
3402 return err;
3403 }
3404
3405 static int rocker_port_ctrl(struct rocker_port *rocker_port,
3406 struct switchdev_trans *trans, int flags,
3407 const struct rocker_ctrl *ctrl)
3408 {
3409 u16 vid;
3410 int err = 0;
3411
3412 for (vid = 1; vid < VLAN_N_VID; vid++) {
3413 if (!test_bit(vid, rocker_port->vlan_bitmap))
3414 continue;
3415 err = rocker_port_ctrl_vlan(rocker_port, trans, flags,
3416 ctrl, htons(vid));
3417 if (err)
3418 break;
3419 }
3420
3421 return err;
3422 }
3423
3424 static int rocker_port_vlan(struct rocker_port *rocker_port,
3425 struct switchdev_trans *trans, int flags, u16 vid)
3426 {
3427 enum rocker_of_dpa_table_id goto_tbl =
3428 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3429 u32 in_pport = rocker_port->pport;
3430 __be16 vlan_id = htons(vid);
3431 __be16 vlan_id_mask = htons(0xffff);
3432 __be16 internal_vlan_id;
3433 bool untagged;
3434 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3435 int err;
3436
3437 internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3438
3439 if (adding && test_bit(ntohs(internal_vlan_id),
3440 rocker_port->vlan_bitmap))
3441 return 0; /* already added */
3442 else if (!adding && !test_bit(ntohs(internal_vlan_id),
3443 rocker_port->vlan_bitmap))
3444 return 0; /* already removed */
3445
3446 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3447
3448 if (adding) {
3449 err = rocker_port_ctrl_vlan_add(rocker_port, trans, flags,
3450 internal_vlan_id);
3451 if (err) {
3452 netdev_err(rocker_port->dev,
3453 "Error (%d) port ctrl vlan add\n", err);
3454 goto err_out;
3455 }
3456 }
3457
3458 err = rocker_port_vlan_l2_groups(rocker_port, trans, flags,
3459 internal_vlan_id, untagged);
3460 if (err) {
3461 netdev_err(rocker_port->dev,
3462 "Error (%d) port VLAN l2 groups\n", err);
3463 goto err_out;
3464 }
3465
3466 err = rocker_port_vlan_flood_group(rocker_port, trans, flags,
3467 internal_vlan_id);
3468 if (err) {
3469 netdev_err(rocker_port->dev,
3470 "Error (%d) port VLAN l2 flood group\n", err);
3471 goto err_out;
3472 }
3473
3474 err = rocker_flow_tbl_vlan(rocker_port, trans, flags,
3475 in_pport, vlan_id, vlan_id_mask,
3476 goto_tbl, untagged, internal_vlan_id);
3477 if (err)
3478 netdev_err(rocker_port->dev,
3479 "Error (%d) port VLAN table\n", err);
3480
3481 err_out:
3482 if (switchdev_trans_ph_prepare(trans))
3483 change_bit(ntohs(internal_vlan_id), rocker_port->vlan_bitmap);
3484
3485 return err;
3486 }
3487
3488 static int rocker_port_ig_tbl(struct rocker_port *rocker_port,
3489 struct switchdev_trans *trans, int flags)
3490 {
3491 enum rocker_of_dpa_table_id goto_tbl;
3492 u32 in_pport;
3493 u32 in_pport_mask;
3494 int err;
3495
3496 /* Normal Ethernet Frames. Matches pkts from any local physical
3497 * ports. Goto VLAN tbl.
3498 */
3499
3500 in_pport = 0;
3501 in_pport_mask = 0xffff0000;
3502 goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3503
3504 err = rocker_flow_tbl_ig_port(rocker_port, trans, flags,
3505 in_pport, in_pport_mask,
3506 goto_tbl);
3507 if (err)
3508 netdev_err(rocker_port->dev,
3509 "Error (%d) ingress port table entry\n", err);
3510
3511 return err;
3512 }
3513
3514 struct rocker_fdb_learn_work {
3515 struct work_struct work;
3516 struct rocker_port *rocker_port;
3517 struct switchdev_trans *trans;
3518 int flags;
3519 u8 addr[ETH_ALEN];
3520 u16 vid;
3521 };
3522
3523 static void rocker_port_fdb_learn_work(struct work_struct *work)
3524 {
3525 const struct rocker_fdb_learn_work *lw =
3526 container_of(work, struct rocker_fdb_learn_work, work);
3527 bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3528 bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3529 struct switchdev_notifier_fdb_info info;
3530
3531 info.addr = lw->addr;
3532 info.vid = lw->vid;
3533
3534 if (learned && removing)
3535 call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
3536 lw->rocker_port->dev, &info.info);
3537 else if (learned && !removing)
3538 call_switchdev_notifiers(SWITCHDEV_FDB_ADD,
3539 lw->rocker_port->dev, &info.info);
3540
3541 rocker_port_kfree(lw->trans, work);
3542 }
3543
3544 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3545 struct switchdev_trans *trans, int flags,
3546 const u8 *addr, __be16 vlan_id)
3547 {
3548 struct rocker_fdb_learn_work *lw;
3549 enum rocker_of_dpa_table_id goto_tbl =
3550 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3551 u32 out_pport = rocker_port->pport;
3552 u32 tunnel_id = 0;
3553 u32 group_id = ROCKER_GROUP_NONE;
3554 bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3555 bool copy_to_cpu = false;
3556 int err;
3557
3558 if (rocker_port_is_bridged(rocker_port))
3559 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3560
3561 if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3562 err = rocker_flow_tbl_bridge(rocker_port, trans, flags, addr,
3563 NULL, vlan_id, tunnel_id, goto_tbl,
3564 group_id, copy_to_cpu);
3565 if (err)
3566 return err;
3567 }
3568
3569 if (!syncing)
3570 return 0;
3571
3572 if (!rocker_port_is_bridged(rocker_port))
3573 return 0;
3574
3575 lw = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*lw));
3576 if (!lw)
3577 return -ENOMEM;
3578
3579 INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3580
3581 lw->rocker_port = rocker_port;
3582 lw->trans = trans;
3583 lw->flags = flags;
3584 ether_addr_copy(lw->addr, addr);
3585 lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3586
3587 if (switchdev_trans_ph_prepare(trans))
3588 rocker_port_kfree(trans, lw);
3589 else
3590 schedule_work(&lw->work);
3591
3592 return 0;
3593 }
3594
3595 static struct rocker_fdb_tbl_entry *
3596 rocker_fdb_tbl_find(const struct rocker *rocker,
3597 const struct rocker_fdb_tbl_entry *match)
3598 {
3599 struct rocker_fdb_tbl_entry *found;
3600
3601 hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3602 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3603 return found;
3604
3605 return NULL;
3606 }
3607
3608 static int rocker_port_fdb(struct rocker_port *rocker_port,
3609 struct switchdev_trans *trans,
3610 const unsigned char *addr,
3611 __be16 vlan_id, int flags)
3612 {
3613 struct rocker *rocker = rocker_port->rocker;
3614 struct rocker_fdb_tbl_entry *fdb;
3615 struct rocker_fdb_tbl_entry *found;
3616 bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3617 unsigned long lock_flags;
3618
3619 fdb = rocker_port_kzalloc(rocker_port, trans, flags, sizeof(*fdb));
3620 if (!fdb)
3621 return -ENOMEM;
3622
3623 fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3624 fdb->touched = jiffies;
3625 fdb->key.rocker_port = rocker_port;
3626 ether_addr_copy(fdb->key.addr, addr);
3627 fdb->key.vlan_id = vlan_id;
3628 fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3629
3630 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3631
3632 found = rocker_fdb_tbl_find(rocker, fdb);
3633
3634 if (found) {
3635 found->touched = jiffies;
3636 if (removing) {
3637 rocker_port_kfree(trans, fdb);
3638 if (!switchdev_trans_ph_prepare(trans))
3639 hash_del(&found->entry);
3640 }
3641 } else if (!removing) {
3642 if (!switchdev_trans_ph_prepare(trans))
3643 hash_add(rocker->fdb_tbl, &fdb->entry,
3644 fdb->key_crc32);
3645 }
3646
3647 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3648
3649 /* Check if adding and already exists, or removing and can't find */
3650 if (!found != !removing) {
3651 rocker_port_kfree(trans, fdb);
3652 if (!found && removing)
3653 return 0;
3654 /* Refreshing existing to update aging timers */
3655 flags |= ROCKER_OP_FLAG_REFRESH;
3656 }
3657
3658 return rocker_port_fdb_learn(rocker_port, trans, flags, addr, vlan_id);
3659 }
3660
3661 static int rocker_port_fdb_flush(struct rocker_port *rocker_port,
3662 struct switchdev_trans *trans, int flags)
3663 {
3664 struct rocker *rocker = rocker_port->rocker;
3665 struct rocker_fdb_tbl_entry *found;
3666 unsigned long lock_flags;
3667 struct hlist_node *tmp;
3668 int bkt;
3669 int err = 0;
3670
3671 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3672 rocker_port->stp_state == BR_STATE_FORWARDING)
3673 return 0;
3674
3675 flags |= ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3676
3677 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3678
3679 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3680 if (found->key.rocker_port != rocker_port)
3681 continue;
3682 if (!found->learned)
3683 continue;
3684 err = rocker_port_fdb_learn(rocker_port, trans, flags,
3685 found->key.addr,
3686 found->key.vlan_id);
3687 if (err)
3688 goto err_out;
3689 if (!switchdev_trans_ph_prepare(trans))
3690 hash_del(&found->entry);
3691 }
3692
3693 err_out:
3694 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3695
3696 return err;
3697 }
3698
3699 static void rocker_fdb_cleanup(unsigned long data)
3700 {
3701 struct rocker *rocker = (struct rocker *)data;
3702 struct rocker_port *rocker_port;
3703 struct rocker_fdb_tbl_entry *entry;
3704 struct hlist_node *tmp;
3705 unsigned long next_timer = jiffies + BR_MIN_AGEING_TIME;
3706 unsigned long expires;
3707 unsigned long lock_flags;
3708 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE |
3709 ROCKER_OP_FLAG_LEARNED;
3710 int bkt;
3711
3712 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3713
3714 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, entry, entry) {
3715 if (!entry->learned)
3716 continue;
3717 rocker_port = entry->key.rocker_port;
3718 expires = entry->touched + rocker_port->ageing_time;
3719 if (time_before_eq(expires, jiffies)) {
3720 rocker_port_fdb_learn(rocker_port, NULL,
3721 flags, entry->key.addr,
3722 entry->key.vlan_id);
3723 hash_del(&entry->entry);
3724 } else if (time_before(expires, next_timer)) {
3725 next_timer = expires;
3726 }
3727 }
3728
3729 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3730
3731 mod_timer(&rocker->fdb_cleanup_timer, round_jiffies_up(next_timer));
3732 }
3733
3734 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3735 struct switchdev_trans *trans, int flags,
3736 __be16 vlan_id)
3737 {
3738 u32 in_pport_mask = 0xffffffff;
3739 __be16 eth_type;
3740 const u8 *dst_mac_mask = ff_mac;
3741 __be16 vlan_id_mask = htons(0xffff);
3742 bool copy_to_cpu = false;
3743 int err;
3744
3745 if (ntohs(vlan_id) == 0)
3746 vlan_id = rocker_port->internal_vlan_id;
3747
3748 eth_type = htons(ETH_P_IP);
3749 err = rocker_flow_tbl_term_mac(rocker_port, trans,
3750 rocker_port->pport, in_pport_mask,
3751 eth_type, rocker_port->dev->dev_addr,
3752 dst_mac_mask, vlan_id, vlan_id_mask,
3753 copy_to_cpu, flags);
3754 if (err)
3755 return err;
3756
3757 eth_type = htons(ETH_P_IPV6);
3758 err = rocker_flow_tbl_term_mac(rocker_port, trans,
3759 rocker_port->pport, in_pport_mask,
3760 eth_type, rocker_port->dev->dev_addr,
3761 dst_mac_mask, vlan_id, vlan_id_mask,
3762 copy_to_cpu, flags);
3763
3764 return err;
3765 }
3766
3767 static int rocker_port_fwding(struct rocker_port *rocker_port,
3768 struct switchdev_trans *trans, int flags)
3769 {
3770 bool pop_vlan;
3771 u32 out_pport;
3772 __be16 vlan_id;
3773 u16 vid;
3774 int err;
3775
3776 /* Port will be forwarding-enabled if its STP state is LEARNING
3777 * or FORWARDING. Traffic from CPU can still egress, regardless of
3778 * port STP state. Use L2 interface group on port VLANs as a way
3779 * to toggle port forwarding: if forwarding is disabled, L2
3780 * interface group will not exist.
3781 */
3782
3783 if (rocker_port->stp_state != BR_STATE_LEARNING &&
3784 rocker_port->stp_state != BR_STATE_FORWARDING)
3785 flags |= ROCKER_OP_FLAG_REMOVE;
3786
3787 out_pport = rocker_port->pport;
3788 for (vid = 1; vid < VLAN_N_VID; vid++) {
3789 if (!test_bit(vid, rocker_port->vlan_bitmap))
3790 continue;
3791 vlan_id = htons(vid);
3792 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3793 err = rocker_group_l2_interface(rocker_port, trans, flags,
3794 vlan_id, out_pport, pop_vlan);
3795 if (err) {
3796 netdev_err(rocker_port->dev,
3797 "Error (%d) port VLAN l2 group for pport %d\n",
3798 err, out_pport);
3799 return err;
3800 }
3801 }
3802
3803 return 0;
3804 }
3805
3806 static int rocker_port_stp_update(struct rocker_port *rocker_port,
3807 struct switchdev_trans *trans, int flags,
3808 u8 state)
3809 {
3810 bool want[ROCKER_CTRL_MAX] = { 0, };
3811 bool prev_ctrls[ROCKER_CTRL_MAX];
3812 u8 uninitialized_var(prev_state);
3813 int err;
3814 int i;
3815
3816 if (switchdev_trans_ph_prepare(trans)) {
3817 memcpy(prev_ctrls, rocker_port->ctrls, sizeof(prev_ctrls));
3818 prev_state = rocker_port->stp_state;
3819 }
3820
3821 if (rocker_port->stp_state == state)
3822 return 0;
3823
3824 rocker_port->stp_state = state;
3825
3826 switch (state) {
3827 case BR_STATE_DISABLED:
3828 /* port is completely disabled */
3829 break;
3830 case BR_STATE_LISTENING:
3831 case BR_STATE_BLOCKING:
3832 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3833 break;
3834 case BR_STATE_LEARNING:
3835 case BR_STATE_FORWARDING:
3836 if (!rocker_port_is_ovsed(rocker_port))
3837 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3838 want[ROCKER_CTRL_IPV4_MCAST] = true;
3839 want[ROCKER_CTRL_IPV6_MCAST] = true;
3840 if (rocker_port_is_bridged(rocker_port))
3841 want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3842 else if (rocker_port_is_ovsed(rocker_port))
3843 want[ROCKER_CTRL_DFLT_OVS] = true;
3844 else
3845 want[ROCKER_CTRL_LOCAL_ARP] = true;
3846 break;
3847 }
3848
3849 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3850 if (want[i] != rocker_port->ctrls[i]) {
3851 int ctrl_flags = flags |
3852 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3853 err = rocker_port_ctrl(rocker_port, trans, ctrl_flags,
3854 &rocker_ctrls[i]);
3855 if (err)
3856 goto err_out;
3857 rocker_port->ctrls[i] = want[i];
3858 }
3859 }
3860
3861 err = rocker_port_fdb_flush(rocker_port, trans, flags);
3862 if (err)
3863 goto err_out;
3864
3865 err = rocker_port_fwding(rocker_port, trans, flags);
3866
3867 err_out:
3868 if (switchdev_trans_ph_prepare(trans)) {
3869 memcpy(rocker_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
3870 rocker_port->stp_state = prev_state;
3871 }
3872
3873 return err;
3874 }
3875
3876 static int rocker_port_fwd_enable(struct rocker_port *rocker_port,
3877 struct switchdev_trans *trans, int flags)
3878 {
3879 if (rocker_port_is_bridged(rocker_port))
3880 /* bridge STP will enable port */
3881 return 0;
3882
3883 /* port is not bridged, so simulate going to FORWARDING state */
3884 return rocker_port_stp_update(rocker_port, trans, flags,
3885 BR_STATE_FORWARDING);
3886 }
3887
3888 static int rocker_port_fwd_disable(struct rocker_port *rocker_port,
3889 struct switchdev_trans *trans, int flags)
3890 {
3891 if (rocker_port_is_bridged(rocker_port))
3892 /* bridge STP will disable port */
3893 return 0;
3894
3895 /* port is not bridged, so simulate going to DISABLED state */
3896 return rocker_port_stp_update(rocker_port, trans, flags,
3897 BR_STATE_DISABLED);
3898 }
3899
3900 static struct rocker_internal_vlan_tbl_entry *
3901 rocker_internal_vlan_tbl_find(const struct rocker *rocker, int ifindex)
3902 {
3903 struct rocker_internal_vlan_tbl_entry *found;
3904
3905 hash_for_each_possible(rocker->internal_vlan_tbl, found,
3906 entry, ifindex) {
3907 if (found->ifindex == ifindex)
3908 return found;
3909 }
3910
3911 return NULL;
3912 }
3913
3914 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3915 int ifindex)
3916 {
3917 struct rocker *rocker = rocker_port->rocker;
3918 struct rocker_internal_vlan_tbl_entry *entry;
3919 struct rocker_internal_vlan_tbl_entry *found;
3920 unsigned long lock_flags;
3921 int i;
3922
3923 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3924 if (!entry)
3925 return 0;
3926
3927 entry->ifindex = ifindex;
3928
3929 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3930
3931 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3932 if (found) {
3933 kfree(entry);
3934 goto found;
3935 }
3936
3937 found = entry;
3938 hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3939
3940 for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3941 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3942 continue;
3943 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3944 goto found;
3945 }
3946
3947 netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3948
3949 found:
3950 found->ref_count++;
3951 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3952
3953 return found->vlan_id;
3954 }
3955
3956 static void
3957 rocker_port_internal_vlan_id_put(const struct rocker_port *rocker_port,
3958 int ifindex)
3959 {
3960 struct rocker *rocker = rocker_port->rocker;
3961 struct rocker_internal_vlan_tbl_entry *found;
3962 unsigned long lock_flags;
3963 unsigned long bit;
3964
3965 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3966
3967 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3968 if (!found) {
3969 netdev_err(rocker_port->dev,
3970 "ifindex (%d) not found in internal VLAN tbl\n",
3971 ifindex);
3972 goto not_found;
3973 }
3974
3975 if (--found->ref_count <= 0) {
3976 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3977 clear_bit(bit, rocker->internal_vlan_bitmap);
3978 hash_del(&found->entry);
3979 kfree(found);
3980 }
3981
3982 not_found:
3983 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3984 }
3985
3986 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port,
3987 struct switchdev_trans *trans, __be32 dst,
3988 int dst_len, const struct fib_info *fi,
3989 u32 tb_id, int flags)
3990 {
3991 const struct fib_nh *nh;
3992 __be16 eth_type = htons(ETH_P_IP);
3993 __be32 dst_mask = inet_make_mask(dst_len);
3994 __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3995 u32 priority = fi->fib_priority;
3996 enum rocker_of_dpa_table_id goto_tbl =
3997 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3998 u32 group_id;
3999 bool nh_on_port;
4000 bool has_gw;
4001 u32 index;
4002 int err;
4003
4004 /* XXX support ECMP */
4005
4006 nh = fi->fib_nh;
4007 nh_on_port = (fi->fib_dev == rocker_port->dev);
4008 has_gw = !!nh->nh_gw;
4009
4010 if (has_gw && nh_on_port) {
4011 err = rocker_port_ipv4_nh(rocker_port, trans, flags,
4012 nh->nh_gw, &index);
4013 if (err)
4014 return err;
4015
4016 group_id = ROCKER_GROUP_L3_UNICAST(index);
4017 } else {
4018 /* Send to CPU for processing */
4019 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
4020 }
4021
4022 err = rocker_flow_tbl_ucast4_routing(rocker_port, trans, eth_type, dst,
4023 dst_mask, priority, goto_tbl,
4024 group_id, flags);
4025 if (err)
4026 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
4027 err, &dst);
4028
4029 return err;
4030 }
4031
4032 /*****************
4033 * Net device ops
4034 *****************/
4035
4036 static int rocker_port_open(struct net_device *dev)
4037 {
4038 struct rocker_port *rocker_port = netdev_priv(dev);
4039 int err;
4040
4041 err = rocker_port_dma_rings_init(rocker_port);
4042 if (err)
4043 return err;
4044
4045 err = request_irq(rocker_msix_tx_vector(rocker_port),
4046 rocker_tx_irq_handler, 0,
4047 rocker_driver_name, rocker_port);
4048 if (err) {
4049 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
4050 goto err_request_tx_irq;
4051 }
4052
4053 err = request_irq(rocker_msix_rx_vector(rocker_port),
4054 rocker_rx_irq_handler, 0,
4055 rocker_driver_name, rocker_port);
4056 if (err) {
4057 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
4058 goto err_request_rx_irq;
4059 }
4060
4061 err = rocker_port_fwd_enable(rocker_port, NULL, 0);
4062 if (err)
4063 goto err_fwd_enable;
4064
4065 napi_enable(&rocker_port->napi_tx);
4066 napi_enable(&rocker_port->napi_rx);
4067 if (!dev->proto_down)
4068 rocker_port_set_enable(rocker_port, true);
4069 netif_start_queue(dev);
4070 return 0;
4071
4072 err_fwd_enable:
4073 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4074 err_request_rx_irq:
4075 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4076 err_request_tx_irq:
4077 rocker_port_dma_rings_fini(rocker_port);
4078 return err;
4079 }
4080
4081 static int rocker_port_stop(struct net_device *dev)
4082 {
4083 struct rocker_port *rocker_port = netdev_priv(dev);
4084
4085 netif_stop_queue(dev);
4086 rocker_port_set_enable(rocker_port, false);
4087 napi_disable(&rocker_port->napi_rx);
4088 napi_disable(&rocker_port->napi_tx);
4089 rocker_port_fwd_disable(rocker_port, NULL,
4090 ROCKER_OP_FLAG_NOWAIT);
4091 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4092 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
4093 rocker_port_dma_rings_fini(rocker_port);
4094
4095 return 0;
4096 }
4097
4098 static void rocker_tx_desc_frags_unmap(const struct rocker_port *rocker_port,
4099 const struct rocker_desc_info *desc_info)
4100 {
4101 const struct rocker *rocker = rocker_port->rocker;
4102 struct pci_dev *pdev = rocker->pdev;
4103 const struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
4104 struct rocker_tlv *attr;
4105 int rem;
4106
4107 rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
4108 if (!attrs[ROCKER_TLV_TX_FRAGS])
4109 return;
4110 rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
4111 const struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
4112 dma_addr_t dma_handle;
4113 size_t len;
4114
4115 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
4116 continue;
4117 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
4118 attr);
4119 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
4120 !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
4121 continue;
4122 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
4123 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
4124 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
4125 }
4126 }
4127
4128 static int rocker_tx_desc_frag_map_put(const struct rocker_port *rocker_port,
4129 struct rocker_desc_info *desc_info,
4130 char *buf, size_t buf_len)
4131 {
4132 const struct rocker *rocker = rocker_port->rocker;
4133 struct pci_dev *pdev = rocker->pdev;
4134 dma_addr_t dma_handle;
4135 struct rocker_tlv *frag;
4136
4137 dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
4138 if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
4139 if (net_ratelimit())
4140 netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
4141 return -EIO;
4142 }
4143 frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
4144 if (!frag)
4145 goto unmap_frag;
4146 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
4147 dma_handle))
4148 goto nest_cancel;
4149 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
4150 buf_len))
4151 goto nest_cancel;
4152 rocker_tlv_nest_end(desc_info, frag);
4153 return 0;
4154
4155 nest_cancel:
4156 rocker_tlv_nest_cancel(desc_info, frag);
4157 unmap_frag:
4158 pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
4159 return -EMSGSIZE;
4160 }
4161
4162 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
4163 {
4164 struct rocker_port *rocker_port = netdev_priv(dev);
4165 struct rocker *rocker = rocker_port->rocker;
4166 struct rocker_desc_info *desc_info;
4167 struct rocker_tlv *frags;
4168 int i;
4169 int err;
4170
4171 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4172 if (unlikely(!desc_info)) {
4173 if (net_ratelimit())
4174 netdev_err(dev, "tx ring full when queue awake\n");
4175 return NETDEV_TX_BUSY;
4176 }
4177
4178 rocker_desc_cookie_ptr_set(desc_info, skb);
4179
4180 frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
4181 if (!frags)
4182 goto out;
4183 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4184 skb->data, skb_headlen(skb));
4185 if (err)
4186 goto nest_cancel;
4187 if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX) {
4188 err = skb_linearize(skb);
4189 if (err)
4190 goto unmap_frags;
4191 }
4192
4193 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4194 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4195
4196 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
4197 skb_frag_address(frag),
4198 skb_frag_size(frag));
4199 if (err)
4200 goto unmap_frags;
4201 }
4202 rocker_tlv_nest_end(desc_info, frags);
4203
4204 rocker_desc_gen_clear(desc_info);
4205 rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
4206
4207 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
4208 if (!desc_info)
4209 netif_stop_queue(dev);
4210
4211 return NETDEV_TX_OK;
4212
4213 unmap_frags:
4214 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4215 nest_cancel:
4216 rocker_tlv_nest_cancel(desc_info, frags);
4217 out:
4218 dev_kfree_skb(skb);
4219 dev->stats.tx_dropped++;
4220
4221 return NETDEV_TX_OK;
4222 }
4223
4224 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
4225 {
4226 struct sockaddr *addr = p;
4227 struct rocker_port *rocker_port = netdev_priv(dev);
4228 int err;
4229
4230 if (!is_valid_ether_addr(addr->sa_data))
4231 return -EADDRNOTAVAIL;
4232
4233 err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4234 if (err)
4235 return err;
4236 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4237 return 0;
4238 }
4239
4240 static int rocker_port_change_mtu(struct net_device *dev, int new_mtu)
4241 {
4242 struct rocker_port *rocker_port = netdev_priv(dev);
4243 int running = netif_running(dev);
4244 int err;
4245
4246 #define ROCKER_PORT_MIN_MTU 68
4247 #define ROCKER_PORT_MAX_MTU 9000
4248
4249 if (new_mtu < ROCKER_PORT_MIN_MTU || new_mtu > ROCKER_PORT_MAX_MTU)
4250 return -EINVAL;
4251
4252 if (running)
4253 rocker_port_stop(dev);
4254
4255 netdev_info(dev, "MTU change from %d to %d\n", dev->mtu, new_mtu);
4256 dev->mtu = new_mtu;
4257
4258 err = rocker_cmd_set_port_settings_mtu(rocker_port, new_mtu);
4259 if (err)
4260 return err;
4261
4262 if (running)
4263 err = rocker_port_open(dev);
4264
4265 return err;
4266 }
4267
4268 static int rocker_port_get_phys_port_name(struct net_device *dev,
4269 char *buf, size_t len)
4270 {
4271 struct rocker_port *rocker_port = netdev_priv(dev);
4272 struct port_name name = { .buf = buf, .len = len };
4273 int err;
4274
4275 err = rocker_cmd_exec(rocker_port, NULL, 0,
4276 rocker_cmd_get_port_settings_prep, NULL,
4277 rocker_cmd_get_port_settings_phys_name_proc,
4278 &name);
4279
4280 return err ? -EOPNOTSUPP : 0;
4281 }
4282
4283 static int rocker_port_change_proto_down(struct net_device *dev,
4284 bool proto_down)
4285 {
4286 struct rocker_port *rocker_port = netdev_priv(dev);
4287
4288 if (rocker_port->dev->flags & IFF_UP)
4289 rocker_port_set_enable(rocker_port, !proto_down);
4290 rocker_port->dev->proto_down = proto_down;
4291 return 0;
4292 }
4293
4294 static void rocker_port_neigh_destroy(struct neighbour *n)
4295 {
4296 struct rocker_port *rocker_port = netdev_priv(n->dev);
4297 int flags = ROCKER_OP_FLAG_REMOVE | ROCKER_OP_FLAG_NOWAIT;
4298 __be32 ip_addr = *(__be32 *)n->primary_key;
4299
4300 rocker_port_ipv4_neigh(rocker_port, NULL,
4301 flags, ip_addr, n->ha);
4302 }
4303
4304 static const struct net_device_ops rocker_port_netdev_ops = {
4305 .ndo_open = rocker_port_open,
4306 .ndo_stop = rocker_port_stop,
4307 .ndo_start_xmit = rocker_port_xmit,
4308 .ndo_set_mac_address = rocker_port_set_mac_address,
4309 .ndo_change_mtu = rocker_port_change_mtu,
4310 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
4311 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
4312 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
4313 .ndo_fdb_add = switchdev_port_fdb_add,
4314 .ndo_fdb_del = switchdev_port_fdb_del,
4315 .ndo_fdb_dump = switchdev_port_fdb_dump,
4316 .ndo_get_phys_port_name = rocker_port_get_phys_port_name,
4317 .ndo_change_proto_down = rocker_port_change_proto_down,
4318 .ndo_neigh_destroy = rocker_port_neigh_destroy,
4319 };
4320
4321 /********************
4322 * swdev interface
4323 ********************/
4324
4325 static int rocker_port_attr_get(struct net_device *dev,
4326 struct switchdev_attr *attr)
4327 {
4328 const struct rocker_port *rocker_port = netdev_priv(dev);
4329 const struct rocker *rocker = rocker_port->rocker;
4330
4331 switch (attr->id) {
4332 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
4333 attr->u.ppid.id_len = sizeof(rocker->hw.id);
4334 memcpy(&attr->u.ppid.id, &rocker->hw.id, attr->u.ppid.id_len);
4335 break;
4336 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
4337 attr->u.brport_flags = rocker_port->brport_flags;
4338 break;
4339 default:
4340 return -EOPNOTSUPP;
4341 }
4342
4343 return 0;
4344 }
4345
4346 static int rocker_port_brport_flags_set(struct rocker_port *rocker_port,
4347 struct switchdev_trans *trans,
4348 unsigned long brport_flags)
4349 {
4350 unsigned long orig_flags;
4351 int err = 0;
4352
4353 orig_flags = rocker_port->brport_flags;
4354 rocker_port->brport_flags = brport_flags;
4355 if ((orig_flags ^ rocker_port->brport_flags) & BR_LEARNING)
4356 err = rocker_port_set_learning(rocker_port, trans);
4357
4358 if (switchdev_trans_ph_prepare(trans))
4359 rocker_port->brport_flags = orig_flags;
4360
4361 return err;
4362 }
4363
4364 static int rocker_port_bridge_ageing_time(struct rocker_port *rocker_port,
4365 struct switchdev_trans *trans,
4366 u32 ageing_time)
4367 {
4368 if (!switchdev_trans_ph_prepare(trans)) {
4369 rocker_port->ageing_time = clock_t_to_jiffies(ageing_time);
4370 mod_timer(&rocker_port->rocker->fdb_cleanup_timer, jiffies);
4371 }
4372
4373 return 0;
4374 }
4375
4376 static int rocker_port_attr_set(struct net_device *dev,
4377 const struct switchdev_attr *attr,
4378 struct switchdev_trans *trans)
4379 {
4380 struct rocker_port *rocker_port = netdev_priv(dev);
4381 int err = 0;
4382
4383 switch (attr->id) {
4384 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
4385 err = rocker_port_stp_update(rocker_port, trans, 0,
4386 attr->u.stp_state);
4387 break;
4388 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
4389 err = rocker_port_brport_flags_set(rocker_port, trans,
4390 attr->u.brport_flags);
4391 break;
4392 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
4393 err = rocker_port_bridge_ageing_time(rocker_port, trans,
4394 attr->u.ageing_time);
4395 break;
4396 default:
4397 err = -EOPNOTSUPP;
4398 break;
4399 }
4400
4401 return err;
4402 }
4403
4404 static int rocker_port_vlan_add(struct rocker_port *rocker_port,
4405 struct switchdev_trans *trans,
4406 u16 vid, u16 flags)
4407 {
4408 int err;
4409
4410 /* XXX deal with flags for PVID and untagged */
4411
4412 err = rocker_port_vlan(rocker_port, trans, 0, vid);
4413 if (err)
4414 return err;
4415
4416 err = rocker_port_router_mac(rocker_port, trans, 0, htons(vid));
4417 if (err)
4418 rocker_port_vlan(rocker_port, trans,
4419 ROCKER_OP_FLAG_REMOVE, vid);
4420
4421 return err;
4422 }
4423
4424 static int rocker_port_vlans_add(struct rocker_port *rocker_port,
4425 struct switchdev_trans *trans,
4426 const struct switchdev_obj_port_vlan *vlan)
4427 {
4428 u16 vid;
4429 int err;
4430
4431 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4432 err = rocker_port_vlan_add(rocker_port, trans,
4433 vid, vlan->flags);
4434 if (err)
4435 return err;
4436 }
4437
4438 return 0;
4439 }
4440
4441 static int rocker_port_fdb_add(struct rocker_port *rocker_port,
4442 struct switchdev_trans *trans,
4443 const struct switchdev_obj_port_fdb *fdb)
4444 {
4445 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4446 int flags = 0;
4447
4448 if (!rocker_port_is_bridged(rocker_port))
4449 return -EINVAL;
4450
4451 return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4452 }
4453
4454 static int rocker_port_obj_add(struct net_device *dev,
4455 const struct switchdev_obj *obj,
4456 struct switchdev_trans *trans)
4457 {
4458 struct rocker_port *rocker_port = netdev_priv(dev);
4459 const struct switchdev_obj_ipv4_fib *fib4;
4460 int err = 0;
4461
4462 switch (obj->id) {
4463 case SWITCHDEV_OBJ_ID_PORT_VLAN:
4464 err = rocker_port_vlans_add(rocker_port, trans,
4465 SWITCHDEV_OBJ_PORT_VLAN(obj));
4466 break;
4467 case SWITCHDEV_OBJ_ID_IPV4_FIB:
4468 fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj);
4469 err = rocker_port_fib_ipv4(rocker_port, trans,
4470 htonl(fib4->dst), fib4->dst_len,
4471 &fib4->fi, fib4->tb_id, 0);
4472 break;
4473 case SWITCHDEV_OBJ_ID_PORT_FDB:
4474 err = rocker_port_fdb_add(rocker_port, trans,
4475 SWITCHDEV_OBJ_PORT_FDB(obj));
4476 break;
4477 default:
4478 err = -EOPNOTSUPP;
4479 break;
4480 }
4481
4482 return err;
4483 }
4484
4485 static int rocker_port_vlan_del(struct rocker_port *rocker_port,
4486 u16 vid, u16 flags)
4487 {
4488 int err;
4489
4490 err = rocker_port_router_mac(rocker_port, NULL,
4491 ROCKER_OP_FLAG_REMOVE, htons(vid));
4492 if (err)
4493 return err;
4494
4495 return rocker_port_vlan(rocker_port, NULL,
4496 ROCKER_OP_FLAG_REMOVE, vid);
4497 }
4498
4499 static int rocker_port_vlans_del(struct rocker_port *rocker_port,
4500 const struct switchdev_obj_port_vlan *vlan)
4501 {
4502 u16 vid;
4503 int err;
4504
4505 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
4506 err = rocker_port_vlan_del(rocker_port, vid, vlan->flags);
4507 if (err)
4508 return err;
4509 }
4510
4511 return 0;
4512 }
4513
4514 static int rocker_port_fdb_del(struct rocker_port *rocker_port,
4515 struct switchdev_trans *trans,
4516 const struct switchdev_obj_port_fdb *fdb)
4517 {
4518 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, fdb->vid, NULL);
4519 int flags = ROCKER_OP_FLAG_REMOVE;
4520
4521 if (!rocker_port_is_bridged(rocker_port))
4522 return -EINVAL;
4523
4524 return rocker_port_fdb(rocker_port, trans, fdb->addr, vlan_id, flags);
4525 }
4526
4527 static int rocker_port_obj_del(struct net_device *dev,
4528 const struct switchdev_obj *obj)
4529 {
4530 struct rocker_port *rocker_port = netdev_priv(dev);
4531 const struct switchdev_obj_ipv4_fib *fib4;
4532 int err = 0;
4533
4534 switch (obj->id) {
4535 case SWITCHDEV_OBJ_ID_PORT_VLAN:
4536 err = rocker_port_vlans_del(rocker_port,
4537 SWITCHDEV_OBJ_PORT_VLAN(obj));
4538 break;
4539 case SWITCHDEV_OBJ_ID_IPV4_FIB:
4540 fib4 = SWITCHDEV_OBJ_IPV4_FIB(obj);
4541 err = rocker_port_fib_ipv4(rocker_port, NULL,
4542 htonl(fib4->dst), fib4->dst_len,
4543 &fib4->fi, fib4->tb_id,
4544 ROCKER_OP_FLAG_REMOVE);
4545 break;
4546 case SWITCHDEV_OBJ_ID_PORT_FDB:
4547 err = rocker_port_fdb_del(rocker_port, NULL,
4548 SWITCHDEV_OBJ_PORT_FDB(obj));
4549 break;
4550 default:
4551 err = -EOPNOTSUPP;
4552 break;
4553 }
4554
4555 return err;
4556 }
4557
4558 static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
4559 struct switchdev_obj_port_fdb *fdb,
4560 switchdev_obj_dump_cb_t *cb)
4561 {
4562 struct rocker *rocker = rocker_port->rocker;
4563 struct rocker_fdb_tbl_entry *found;
4564 struct hlist_node *tmp;
4565 unsigned long lock_flags;
4566 int bkt;
4567 int err = 0;
4568
4569 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4570 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4571 if (found->key.rocker_port != rocker_port)
4572 continue;
4573 ether_addr_copy(fdb->addr, found->key.addr);
4574 fdb->ndm_state = NUD_REACHABLE;
4575 fdb->vid = rocker_port_vlan_to_vid(rocker_port,
4576 found->key.vlan_id);
4577 err = cb(&fdb->obj);
4578 if (err)
4579 break;
4580 }
4581 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4582
4583 return err;
4584 }
4585
4586 static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
4587 struct switchdev_obj_port_vlan *vlan,
4588 switchdev_obj_dump_cb_t *cb)
4589 {
4590 u16 vid;
4591 int err = 0;
4592
4593 for (vid = 1; vid < VLAN_N_VID; vid++) {
4594 if (!test_bit(vid, rocker_port->vlan_bitmap))
4595 continue;
4596 vlan->flags = 0;
4597 if (rocker_vlan_id_is_internal(htons(vid)))
4598 vlan->flags |= BRIDGE_VLAN_INFO_PVID;
4599 vlan->vid_begin = vlan->vid_end = vid;
4600 err = cb(&vlan->obj);
4601 if (err)
4602 break;
4603 }
4604
4605 return err;
4606 }
4607
4608 static int rocker_port_obj_dump(struct net_device *dev,
4609 struct switchdev_obj *obj,
4610 switchdev_obj_dump_cb_t *cb)
4611 {
4612 const struct rocker_port *rocker_port = netdev_priv(dev);
4613 int err = 0;
4614
4615 switch (obj->id) {
4616 case SWITCHDEV_OBJ_ID_PORT_FDB:
4617 err = rocker_port_fdb_dump(rocker_port,
4618 SWITCHDEV_OBJ_PORT_FDB(obj), cb);
4619 break;
4620 case SWITCHDEV_OBJ_ID_PORT_VLAN:
4621 err = rocker_port_vlan_dump(rocker_port,
4622 SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
4623 break;
4624 default:
4625 err = -EOPNOTSUPP;
4626 break;
4627 }
4628
4629 return err;
4630 }
4631
4632 static const struct switchdev_ops rocker_port_switchdev_ops = {
4633 .switchdev_port_attr_get = rocker_port_attr_get,
4634 .switchdev_port_attr_set = rocker_port_attr_set,
4635 .switchdev_port_obj_add = rocker_port_obj_add,
4636 .switchdev_port_obj_del = rocker_port_obj_del,
4637 .switchdev_port_obj_dump = rocker_port_obj_dump,
4638 };
4639
4640 /********************
4641 * ethtool interface
4642 ********************/
4643
4644 static int rocker_port_get_settings(struct net_device *dev,
4645 struct ethtool_cmd *ecmd)
4646 {
4647 struct rocker_port *rocker_port = netdev_priv(dev);
4648
4649 return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4650 }
4651
4652 static int rocker_port_set_settings(struct net_device *dev,
4653 struct ethtool_cmd *ecmd)
4654 {
4655 struct rocker_port *rocker_port = netdev_priv(dev);
4656
4657 return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4658 }
4659
4660 static void rocker_port_get_drvinfo(struct net_device *dev,
4661 struct ethtool_drvinfo *drvinfo)
4662 {
4663 strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4664 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4665 }
4666
4667 static struct rocker_port_stats {
4668 char str[ETH_GSTRING_LEN];
4669 int type;
4670 } rocker_port_stats[] = {
4671 { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, },
4672 { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, },
4673 { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4674 { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, },
4675
4676 { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, },
4677 { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, },
4678 { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4679 { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, },
4680 };
4681
4682 #define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats)
4683
4684 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4685 u8 *data)
4686 {
4687 u8 *p = data;
4688 int i;
4689
4690 switch (stringset) {
4691 case ETH_SS_STATS:
4692 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4693 memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4694 p += ETH_GSTRING_LEN;
4695 }
4696 break;
4697 }
4698 }
4699
4700 static int
4701 rocker_cmd_get_port_stats_prep(const struct rocker_port *rocker_port,
4702 struct rocker_desc_info *desc_info,
4703 void *priv)
4704 {
4705 struct rocker_tlv *cmd_stats;
4706
4707 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4708 ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4709 return -EMSGSIZE;
4710
4711 cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4712 if (!cmd_stats)
4713 return -EMSGSIZE;
4714
4715 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4716 rocker_port->pport))
4717 return -EMSGSIZE;
4718
4719 rocker_tlv_nest_end(desc_info, cmd_stats);
4720
4721 return 0;
4722 }
4723
4724 static int
4725 rocker_cmd_get_port_stats_ethtool_proc(const struct rocker_port *rocker_port,
4726 const struct rocker_desc_info *desc_info,
4727 void *priv)
4728 {
4729 const struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4730 const struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4731 const struct rocker_tlv *pattr;
4732 u32 pport;
4733 u64 *data = priv;
4734 int i;
4735
4736 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4737
4738 if (!attrs[ROCKER_TLV_CMD_INFO])
4739 return -EIO;
4740
4741 rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4742 attrs[ROCKER_TLV_CMD_INFO]);
4743
4744 if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4745 return -EIO;
4746
4747 pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4748 if (pport != rocker_port->pport)
4749 return -EIO;
4750
4751 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4752 pattr = stats_attrs[rocker_port_stats[i].type];
4753 if (!pattr)
4754 continue;
4755
4756 data[i] = rocker_tlv_get_u64(pattr);
4757 }
4758
4759 return 0;
4760 }
4761
4762 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4763 void *priv)
4764 {
4765 return rocker_cmd_exec(rocker_port, NULL, 0,
4766 rocker_cmd_get_port_stats_prep, NULL,
4767 rocker_cmd_get_port_stats_ethtool_proc,
4768 priv);
4769 }
4770
4771 static void rocker_port_get_stats(struct net_device *dev,
4772 struct ethtool_stats *stats, u64 *data)
4773 {
4774 struct rocker_port *rocker_port = netdev_priv(dev);
4775
4776 if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4777 int i;
4778
4779 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4780 data[i] = 0;
4781 }
4782 }
4783
4784 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4785 {
4786 switch (sset) {
4787 case ETH_SS_STATS:
4788 return ROCKER_PORT_STATS_LEN;
4789 default:
4790 return -EOPNOTSUPP;
4791 }
4792 }
4793
4794 static const struct ethtool_ops rocker_port_ethtool_ops = {
4795 .get_settings = rocker_port_get_settings,
4796 .set_settings = rocker_port_set_settings,
4797 .get_drvinfo = rocker_port_get_drvinfo,
4798 .get_link = ethtool_op_get_link,
4799 .get_strings = rocker_port_get_strings,
4800 .get_ethtool_stats = rocker_port_get_stats,
4801 .get_sset_count = rocker_port_get_sset_count,
4802 };
4803
4804 /*****************
4805 * NAPI interface
4806 *****************/
4807
4808 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4809 {
4810 return container_of(napi, struct rocker_port, napi_tx);
4811 }
4812
4813 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4814 {
4815 struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4816 const struct rocker *rocker = rocker_port->rocker;
4817 const struct rocker_desc_info *desc_info;
4818 u32 credits = 0;
4819 int err;
4820
4821 /* Cleanup tx descriptors */
4822 while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4823 struct sk_buff *skb;
4824
4825 err = rocker_desc_err(desc_info);
4826 if (err && net_ratelimit())
4827 netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4828 err);
4829 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4830
4831 skb = rocker_desc_cookie_ptr_get(desc_info);
4832 if (err == 0) {
4833 rocker_port->dev->stats.tx_packets++;
4834 rocker_port->dev->stats.tx_bytes += skb->len;
4835 } else {
4836 rocker_port->dev->stats.tx_errors++;
4837 }
4838
4839 dev_kfree_skb_any(skb);
4840 credits++;
4841 }
4842
4843 if (credits && netif_queue_stopped(rocker_port->dev))
4844 netif_wake_queue(rocker_port->dev);
4845
4846 napi_complete(napi);
4847 rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4848
4849 return 0;
4850 }
4851
4852 static int rocker_port_rx_proc(const struct rocker *rocker,
4853 const struct rocker_port *rocker_port,
4854 struct rocker_desc_info *desc_info)
4855 {
4856 const struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4857 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4858 size_t rx_len;
4859 u16 rx_flags = 0;
4860
4861 if (!skb)
4862 return -ENOENT;
4863
4864 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4865 if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4866 return -EINVAL;
4867 if (attrs[ROCKER_TLV_RX_FLAGS])
4868 rx_flags = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FLAGS]);
4869
4870 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4871
4872 rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4873 skb_put(skb, rx_len);
4874 skb->protocol = eth_type_trans(skb, rocker_port->dev);
4875
4876 if (rx_flags & ROCKER_RX_FLAGS_FWD_OFFLOAD)
4877 skb->offload_fwd_mark = rocker_port->dev->offload_fwd_mark;
4878
4879 rocker_port->dev->stats.rx_packets++;
4880 rocker_port->dev->stats.rx_bytes += skb->len;
4881
4882 netif_receive_skb(skb);
4883
4884 return rocker_dma_rx_ring_skb_alloc(rocker_port, desc_info);
4885 }
4886
4887 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4888 {
4889 return container_of(napi, struct rocker_port, napi_rx);
4890 }
4891
4892 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4893 {
4894 struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4895 const struct rocker *rocker = rocker_port->rocker;
4896 struct rocker_desc_info *desc_info;
4897 u32 credits = 0;
4898 int err;
4899
4900 /* Process rx descriptors */
4901 while (credits < budget &&
4902 (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4903 err = rocker_desc_err(desc_info);
4904 if (err) {
4905 if (net_ratelimit())
4906 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4907 err);
4908 } else {
4909 err = rocker_port_rx_proc(rocker, rocker_port,
4910 desc_info);
4911 if (err && net_ratelimit())
4912 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4913 err);
4914 }
4915 if (err)
4916 rocker_port->dev->stats.rx_errors++;
4917
4918 rocker_desc_gen_clear(desc_info);
4919 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4920 credits++;
4921 }
4922
4923 if (credits < budget)
4924 napi_complete(napi);
4925
4926 rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4927
4928 return credits;
4929 }
4930
4931 /*****************
4932 * PCI driver ops
4933 *****************/
4934
4935 static void rocker_carrier_init(const struct rocker_port *rocker_port)
4936 {
4937 const struct rocker *rocker = rocker_port->rocker;
4938 u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4939 bool link_up;
4940
4941 link_up = link_status & (1 << rocker_port->pport);
4942 if (link_up)
4943 netif_carrier_on(rocker_port->dev);
4944 else
4945 netif_carrier_off(rocker_port->dev);
4946 }
4947
4948 static void rocker_remove_ports(const struct rocker *rocker)
4949 {
4950 struct rocker_port *rocker_port;
4951 int i;
4952
4953 for (i = 0; i < rocker->port_count; i++) {
4954 rocker_port = rocker->ports[i];
4955 if (!rocker_port)
4956 continue;
4957 rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE);
4958 unregister_netdev(rocker_port->dev);
4959 free_netdev(rocker_port->dev);
4960 }
4961 kfree(rocker->ports);
4962 }
4963
4964 static void rocker_port_dev_addr_init(struct rocker_port *rocker_port)
4965 {
4966 const struct rocker *rocker = rocker_port->rocker;
4967 const struct pci_dev *pdev = rocker->pdev;
4968 int err;
4969
4970 err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4971 rocker_port->dev->dev_addr);
4972 if (err) {
4973 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4974 eth_hw_addr_random(rocker_port->dev);
4975 }
4976 }
4977
4978 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4979 {
4980 const struct pci_dev *pdev = rocker->pdev;
4981 struct rocker_port *rocker_port;
4982 struct net_device *dev;
4983 u16 untagged_vid = 0;
4984 int err;
4985
4986 dev = alloc_etherdev(sizeof(struct rocker_port));
4987 if (!dev)
4988 return -ENOMEM;
4989 rocker_port = netdev_priv(dev);
4990 rocker_port->dev = dev;
4991 rocker_port->rocker = rocker;
4992 rocker_port->port_number = port_number;
4993 rocker_port->pport = port_number + 1;
4994 rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4995 rocker_port->ageing_time = BR_DEFAULT_AGEING_TIME;
4996
4997 rocker_port_dev_addr_init(rocker_port);
4998 dev->netdev_ops = &rocker_port_netdev_ops;
4999 dev->ethtool_ops = &rocker_port_ethtool_ops;
5000 dev->switchdev_ops = &rocker_port_switchdev_ops;
5001 netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
5002 NAPI_POLL_WEIGHT);
5003 netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
5004 NAPI_POLL_WEIGHT);
5005 rocker_carrier_init(rocker_port);
5006
5007 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_SG;
5008
5009 err = register_netdev(dev);
5010 if (err) {
5011 dev_err(&pdev->dev, "register_netdev failed\n");
5012 goto err_register_netdev;
5013 }
5014 rocker->ports[port_number] = rocker_port;
5015
5016 switchdev_port_fwd_mark_set(rocker_port->dev, NULL, false);
5017
5018 rocker_port_set_learning(rocker_port, NULL);
5019
5020 err = rocker_port_ig_tbl(rocker_port, NULL, 0);
5021 if (err) {
5022 netdev_err(rocker_port->dev, "install ig port table failed\n");
5023 goto err_port_ig_tbl;
5024 }
5025
5026 rocker_port->internal_vlan_id =
5027 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
5028
5029 err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5030 if (err) {
5031 netdev_err(rocker_port->dev, "install untagged VLAN failed\n");
5032 goto err_untagged_vlan;
5033 }
5034
5035 return 0;
5036
5037 err_untagged_vlan:
5038 rocker_port_ig_tbl(rocker_port, NULL, ROCKER_OP_FLAG_REMOVE);
5039 err_port_ig_tbl:
5040 rocker->ports[port_number] = NULL;
5041 unregister_netdev(dev);
5042 err_register_netdev:
5043 free_netdev(dev);
5044 return err;
5045 }
5046
5047 static int rocker_probe_ports(struct rocker *rocker)
5048 {
5049 int i;
5050 size_t alloc_size;
5051 int err;
5052
5053 alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
5054 rocker->ports = kzalloc(alloc_size, GFP_KERNEL);
5055 if (!rocker->ports)
5056 return -ENOMEM;
5057 for (i = 0; i < rocker->port_count; i++) {
5058 err = rocker_probe_port(rocker, i);
5059 if (err)
5060 goto remove_ports;
5061 }
5062 return 0;
5063
5064 remove_ports:
5065 rocker_remove_ports(rocker);
5066 return err;
5067 }
5068
5069 static int rocker_msix_init(struct rocker *rocker)
5070 {
5071 struct pci_dev *pdev = rocker->pdev;
5072 int msix_entries;
5073 int i;
5074 int err;
5075
5076 msix_entries = pci_msix_vec_count(pdev);
5077 if (msix_entries < 0)
5078 return msix_entries;
5079
5080 if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
5081 return -EINVAL;
5082
5083 rocker->msix_entries = kmalloc_array(msix_entries,
5084 sizeof(struct msix_entry),
5085 GFP_KERNEL);
5086 if (!rocker->msix_entries)
5087 return -ENOMEM;
5088
5089 for (i = 0; i < msix_entries; i++)
5090 rocker->msix_entries[i].entry = i;
5091
5092 err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
5093 if (err < 0)
5094 goto err_enable_msix;
5095
5096 return 0;
5097
5098 err_enable_msix:
5099 kfree(rocker->msix_entries);
5100 return err;
5101 }
5102
5103 static void rocker_msix_fini(const struct rocker *rocker)
5104 {
5105 pci_disable_msix(rocker->pdev);
5106 kfree(rocker->msix_entries);
5107 }
5108
5109 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
5110 {
5111 struct rocker *rocker;
5112 int err;
5113
5114 rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
5115 if (!rocker)
5116 return -ENOMEM;
5117
5118 err = pci_enable_device(pdev);
5119 if (err) {
5120 dev_err(&pdev->dev, "pci_enable_device failed\n");
5121 goto err_pci_enable_device;
5122 }
5123
5124 err = pci_request_regions(pdev, rocker_driver_name);
5125 if (err) {
5126 dev_err(&pdev->dev, "pci_request_regions failed\n");
5127 goto err_pci_request_regions;
5128 }
5129
5130 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
5131 if (!err) {
5132 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
5133 if (err) {
5134 dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
5135 goto err_pci_set_dma_mask;
5136 }
5137 } else {
5138 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5139 if (err) {
5140 dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
5141 goto err_pci_set_dma_mask;
5142 }
5143 }
5144
5145 if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
5146 dev_err(&pdev->dev, "invalid PCI region size\n");
5147 err = -EINVAL;
5148 goto err_pci_resource_len_check;
5149 }
5150
5151 rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
5152 pci_resource_len(pdev, 0));
5153 if (!rocker->hw_addr) {
5154 dev_err(&pdev->dev, "ioremap failed\n");
5155 err = -EIO;
5156 goto err_ioremap;
5157 }
5158 pci_set_master(pdev);
5159
5160 rocker->pdev = pdev;
5161 pci_set_drvdata(pdev, rocker);
5162
5163 rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
5164
5165 err = rocker_msix_init(rocker);
5166 if (err) {
5167 dev_err(&pdev->dev, "MSI-X init failed\n");
5168 goto err_msix_init;
5169 }
5170
5171 err = rocker_basic_hw_test(rocker);
5172 if (err) {
5173 dev_err(&pdev->dev, "basic hw test failed\n");
5174 goto err_basic_hw_test;
5175 }
5176
5177 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5178
5179 err = rocker_dma_rings_init(rocker);
5180 if (err)
5181 goto err_dma_rings_init;
5182
5183 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
5184 rocker_cmd_irq_handler, 0,
5185 rocker_driver_name, rocker);
5186 if (err) {
5187 dev_err(&pdev->dev, "cannot assign cmd irq\n");
5188 goto err_request_cmd_irq;
5189 }
5190
5191 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
5192 rocker_event_irq_handler, 0,
5193 rocker_driver_name, rocker);
5194 if (err) {
5195 dev_err(&pdev->dev, "cannot assign event irq\n");
5196 goto err_request_event_irq;
5197 }
5198
5199 rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
5200
5201 err = rocker_init_tbls(rocker);
5202 if (err) {
5203 dev_err(&pdev->dev, "cannot init rocker tables\n");
5204 goto err_init_tbls;
5205 }
5206
5207 setup_timer(&rocker->fdb_cleanup_timer, rocker_fdb_cleanup,
5208 (unsigned long) rocker);
5209 mod_timer(&rocker->fdb_cleanup_timer, jiffies);
5210
5211 err = rocker_probe_ports(rocker);
5212 if (err) {
5213 dev_err(&pdev->dev, "failed to probe ports\n");
5214 goto err_probe_ports;
5215 }
5216
5217 dev_info(&pdev->dev, "Rocker switch with id %*phN\n",
5218 (int)sizeof(rocker->hw.id), &rocker->hw.id);
5219
5220 return 0;
5221
5222 err_probe_ports:
5223 del_timer_sync(&rocker->fdb_cleanup_timer);
5224 rocker_free_tbls(rocker);
5225 err_init_tbls:
5226 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5227 err_request_event_irq:
5228 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5229 err_request_cmd_irq:
5230 rocker_dma_rings_fini(rocker);
5231 err_dma_rings_init:
5232 err_basic_hw_test:
5233 rocker_msix_fini(rocker);
5234 err_msix_init:
5235 iounmap(rocker->hw_addr);
5236 err_ioremap:
5237 err_pci_resource_len_check:
5238 err_pci_set_dma_mask:
5239 pci_release_regions(pdev);
5240 err_pci_request_regions:
5241 pci_disable_device(pdev);
5242 err_pci_enable_device:
5243 kfree(rocker);
5244 return err;
5245 }
5246
5247 static void rocker_remove(struct pci_dev *pdev)
5248 {
5249 struct rocker *rocker = pci_get_drvdata(pdev);
5250
5251 del_timer_sync(&rocker->fdb_cleanup_timer);
5252 rocker_free_tbls(rocker);
5253 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
5254 rocker_remove_ports(rocker);
5255 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
5256 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
5257 rocker_dma_rings_fini(rocker);
5258 rocker_msix_fini(rocker);
5259 iounmap(rocker->hw_addr);
5260 pci_release_regions(rocker->pdev);
5261 pci_disable_device(rocker->pdev);
5262 kfree(rocker);
5263 }
5264
5265 static struct pci_driver rocker_pci_driver = {
5266 .name = rocker_driver_name,
5267 .id_table = rocker_pci_id_table,
5268 .probe = rocker_probe,
5269 .remove = rocker_remove,
5270 };
5271
5272 /************************************
5273 * Net device notifier event handler
5274 ************************************/
5275
5276 static bool rocker_port_dev_check(const struct net_device *dev)
5277 {
5278 return dev->netdev_ops == &rocker_port_netdev_ops;
5279 }
5280
5281 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
5282 struct net_device *bridge)
5283 {
5284 u16 untagged_vid = 0;
5285 int err;
5286
5287 /* Port is joining bridge, so the internal VLAN for the
5288 * port is going to change to the bridge internal VLAN.
5289 * Let's remove untagged VLAN (vid=0) from port and
5290 * re-add once internal VLAN has changed.
5291 */
5292
5293 err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5294 if (err)
5295 return err;
5296
5297 rocker_port_internal_vlan_id_put(rocker_port,
5298 rocker_port->dev->ifindex);
5299 rocker_port->internal_vlan_id =
5300 rocker_port_internal_vlan_id_get(rocker_port, bridge->ifindex);
5301
5302 rocker_port->bridge_dev = bridge;
5303 switchdev_port_fwd_mark_set(rocker_port->dev, bridge, true);
5304
5305 return rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5306 }
5307
5308 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
5309 {
5310 u16 untagged_vid = 0;
5311 int err;
5312
5313 err = rocker_port_vlan_del(rocker_port, untagged_vid, 0);
5314 if (err)
5315 return err;
5316
5317 rocker_port_internal_vlan_id_put(rocker_port,
5318 rocker_port->bridge_dev->ifindex);
5319 rocker_port->internal_vlan_id =
5320 rocker_port_internal_vlan_id_get(rocker_port,
5321 rocker_port->dev->ifindex);
5322
5323 switchdev_port_fwd_mark_set(rocker_port->dev, rocker_port->bridge_dev,
5324 false);
5325 rocker_port->bridge_dev = NULL;
5326
5327 err = rocker_port_vlan_add(rocker_port, NULL, untagged_vid, 0);
5328 if (err)
5329 return err;
5330
5331 if (rocker_port->dev->flags & IFF_UP)
5332 err = rocker_port_fwd_enable(rocker_port, NULL, 0);
5333
5334 return err;
5335 }
5336
5337
5338 static int rocker_port_ovs_changed(struct rocker_port *rocker_port,
5339 struct net_device *master)
5340 {
5341 int err;
5342
5343 rocker_port->bridge_dev = master;
5344
5345 err = rocker_port_fwd_disable(rocker_port, NULL, 0);
5346 if (err)
5347 return err;
5348 err = rocker_port_fwd_enable(rocker_port, NULL, 0);
5349
5350 return err;
5351 }
5352
5353 static int rocker_port_master_linked(struct rocker_port *rocker_port,
5354 struct net_device *master)
5355 {
5356 int err = 0;
5357
5358 if (netif_is_bridge_master(master))
5359 err = rocker_port_bridge_join(rocker_port, master);
5360 else if (netif_is_ovs_master(master))
5361 err = rocker_port_ovs_changed(rocker_port, master);
5362 return err;
5363 }
5364
5365 static int rocker_port_master_unlinked(struct rocker_port *rocker_port)
5366 {
5367 int err = 0;
5368
5369 if (rocker_port_is_bridged(rocker_port))
5370 err = rocker_port_bridge_leave(rocker_port);
5371 else if (rocker_port_is_ovsed(rocker_port))
5372 err = rocker_port_ovs_changed(rocker_port, NULL);
5373 return err;
5374 }
5375
5376 static int rocker_netdevice_event(struct notifier_block *unused,
5377 unsigned long event, void *ptr)
5378 {
5379 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
5380 struct netdev_notifier_changeupper_info *info;
5381 struct rocker_port *rocker_port;
5382 int err;
5383
5384 if (!rocker_port_dev_check(dev))
5385 return NOTIFY_DONE;
5386
5387 switch (event) {
5388 case NETDEV_CHANGEUPPER:
5389 info = ptr;
5390 if (!info->master)
5391 goto out;
5392 rocker_port = netdev_priv(dev);
5393 if (info->linking) {
5394 err = rocker_port_master_linked(rocker_port,
5395 info->upper_dev);
5396 if (err)
5397 netdev_warn(dev, "failed to reflect master linked (err %d)\n",
5398 err);
5399 } else {
5400 err = rocker_port_master_unlinked(rocker_port);
5401 if (err)
5402 netdev_warn(dev, "failed to reflect master unlinked (err %d)\n",
5403 err);
5404 }
5405 break;
5406 }
5407 out:
5408 return NOTIFY_DONE;
5409 }
5410
5411 static struct notifier_block rocker_netdevice_nb __read_mostly = {
5412 .notifier_call = rocker_netdevice_event,
5413 };
5414
5415 /************************************
5416 * Net event notifier event handler
5417 ************************************/
5418
5419 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
5420 {
5421 struct rocker_port *rocker_port = netdev_priv(dev);
5422 int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) |
5423 ROCKER_OP_FLAG_NOWAIT;
5424 __be32 ip_addr = *(__be32 *)n->primary_key;
5425
5426 return rocker_port_ipv4_neigh(rocker_port, NULL, flags, ip_addr, n->ha);
5427 }
5428
5429 static int rocker_netevent_event(struct notifier_block *unused,
5430 unsigned long event, void *ptr)
5431 {
5432 struct net_device *dev;
5433 struct neighbour *n = ptr;
5434 int err;
5435
5436 switch (event) {
5437 case NETEVENT_NEIGH_UPDATE:
5438 if (n->tbl != &arp_tbl)
5439 return NOTIFY_DONE;
5440 dev = n->dev;
5441 if (!rocker_port_dev_check(dev))
5442 return NOTIFY_DONE;
5443 err = rocker_neigh_update(dev, n);
5444 if (err)
5445 netdev_warn(dev,
5446 "failed to handle neigh update (err %d)\n",
5447 err);
5448 break;
5449 }
5450
5451 return NOTIFY_DONE;
5452 }
5453
5454 static struct notifier_block rocker_netevent_nb __read_mostly = {
5455 .notifier_call = rocker_netevent_event,
5456 };
5457
5458 /***********************
5459 * Module init and exit
5460 ***********************/
5461
5462 static int __init rocker_module_init(void)
5463 {
5464 int err;
5465
5466 register_netdevice_notifier(&rocker_netdevice_nb);
5467 register_netevent_notifier(&rocker_netevent_nb);
5468 err = pci_register_driver(&rocker_pci_driver);
5469 if (err)
5470 goto err_pci_register_driver;
5471 return 0;
5472
5473 err_pci_register_driver:
5474 unregister_netevent_notifier(&rocker_netevent_nb);
5475 unregister_netdevice_notifier(&rocker_netdevice_nb);
5476 return err;
5477 }
5478
5479 static void __exit rocker_module_exit(void)
5480 {
5481 unregister_netevent_notifier(&rocker_netevent_nb);
5482 unregister_netdevice_notifier(&rocker_netdevice_nb);
5483 pci_unregister_driver(&rocker_pci_driver);
5484 }
5485
5486 module_init(rocker_module_init);
5487 module_exit(rocker_module_exit);
5488
5489 MODULE_LICENSE("GPL v2");
5490 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5491 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5492 MODULE_DESCRIPTION("Rocker switch device driver");
5493 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);
Linux with added FPC-III support