1 /*
2 * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
3 * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
4 * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/pci.h>
15 #include <linux/interrupt.h>
16 #include <linux/sched.h>
17 #include <linux/wait.h>
18 #include <linux/spinlock.h>
19 #include <linux/hashtable.h>
20 #include <linux/crc32.h>
21 #include <linux/sort.h>
22 #include <linux/random.h>
23 #include <linux/netdevice.h>
24 #include <linux/inetdevice.h>
25 #include <linux/skbuff.h>
26 #include <linux/socket.h>
27 #include <linux/etherdevice.h>
28 #include <linux/ethtool.h>
29 #include <linux/if_ether.h>
30 #include <linux/if_vlan.h>
31 #include <linux/if_bridge.h>
32 #include <linux/bitops.h>
33 #include <linux/ctype.h>
34 #include <net/switchdev.h>
35 #include <net/rtnetlink.h>
36 #include <net/ip_fib.h>
37 #include <net/netevent.h>
38 #include <net/arp.h>
39 #include <asm-generic/io-64-nonatomic-lo-hi.h>
40 #include <generated/utsrelease.h>
41
42 #include "rocker.h"
43
44 static const char rocker_driver_name[] = "rocker";
45
46 static const struct pci_device_id rocker_pci_id_table[] = {
47 {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
48 {0, }
49 };
50
51 struct rocker_flow_tbl_key {
52 u32 priority;
53 enum rocker_of_dpa_table_id tbl_id;
54 union {
55 struct {
56 u32 in_pport;
57 u32 in_pport_mask;
58 enum rocker_of_dpa_table_id goto_tbl;
59 } ig_port;
60 struct {
61 u32 in_pport;
62 __be16 vlan_id;
63 __be16 vlan_id_mask;
64 enum rocker_of_dpa_table_id goto_tbl;
65 bool untagged;
66 __be16 new_vlan_id;
67 } vlan;
68 struct {
69 u32 in_pport;
70 u32 in_pport_mask;
71 __be16 eth_type;
72 u8 eth_dst[ETH_ALEN];
73 u8 eth_dst_mask[ETH_ALEN];
74 __be16 vlan_id;
75 __be16 vlan_id_mask;
76 enum rocker_of_dpa_table_id goto_tbl;
77 bool copy_to_cpu;
78 } term_mac;
79 struct {
80 __be16 eth_type;
81 __be32 dst4;
82 __be32 dst4_mask;
83 enum rocker_of_dpa_table_id goto_tbl;
84 u32 group_id;
85 } ucast_routing;
86 struct {
87 u8 eth_dst[ETH_ALEN];
88 u8 eth_dst_mask[ETH_ALEN];
89 int has_eth_dst;
90 int has_eth_dst_mask;
91 __be16 vlan_id;
92 u32 tunnel_id;
93 enum rocker_of_dpa_table_id goto_tbl;
94 u32 group_id;
95 bool copy_to_cpu;
96 } bridge;
97 struct {
98 u32 in_pport;
99 u32 in_pport_mask;
100 u8 eth_src[ETH_ALEN];
101 u8 eth_src_mask[ETH_ALEN];
102 u8 eth_dst[ETH_ALEN];
103 u8 eth_dst_mask[ETH_ALEN];
104 __be16 eth_type;
105 __be16 vlan_id;
106 __be16 vlan_id_mask;
107 u8 ip_proto;
108 u8 ip_proto_mask;
109 u8 ip_tos;
110 u8 ip_tos_mask;
111 u32 group_id;
112 } acl;
113 };
114 };
115
116 struct rocker_flow_tbl_entry {
117 struct hlist_node entry;
118 u32 cmd;
119 u64 cookie;
120 struct rocker_flow_tbl_key key;
121 size_t key_len;
122 u32 key_crc32; /* key */
123 };
124
125 struct rocker_group_tbl_entry {
126 struct hlist_node entry;
127 u32 cmd;
128 u32 group_id; /* key */
129 u16 group_count;
130 u32 *group_ids;
131 union {
132 struct {
133 u8 pop_vlan;
134 } l2_interface;
135 struct {
136 u8 eth_src[ETH_ALEN];
137 u8 eth_dst[ETH_ALEN];
138 __be16 vlan_id;
139 u32 group_id;
140 } l2_rewrite;
141 struct {
142 u8 eth_src[ETH_ALEN];
143 u8 eth_dst[ETH_ALEN];
144 __be16 vlan_id;
145 bool ttl_check;
146 u32 group_id;
147 } l3_unicast;
148 };
149 };
150
151 struct rocker_fdb_tbl_entry {
152 struct hlist_node entry;
153 u32 key_crc32; /* key */
154 bool learned;
155 struct rocker_fdb_tbl_key {
156 u32 pport;
157 u8 addr[ETH_ALEN];
158 __be16 vlan_id;
159 } key;
160 };
161
162 struct rocker_internal_vlan_tbl_entry {
163 struct hlist_node entry;
164 int ifindex; /* key */
165 u32 ref_count;
166 __be16 vlan_id;
167 };
168
169 struct rocker_neigh_tbl_entry {
170 struct hlist_node entry;
171 __be32 ip_addr; /* key */
172 struct net_device *dev;
173 u32 ref_count;
174 u32 index;
175 u8 eth_dst[ETH_ALEN];
176 bool ttl_check;
177 };
178
179 struct rocker_desc_info {
180 char *data; /* mapped */
181 size_t data_size;
182 size_t tlv_size;
183 struct rocker_desc *desc;
184 DEFINE_DMA_UNMAP_ADDR(mapaddr);
185 };
186
187 struct rocker_dma_ring_info {
188 size_t size;
189 u32 head;
190 u32 tail;
191 struct rocker_desc *desc; /* mapped */
192 dma_addr_t mapaddr;
193 struct rocker_desc_info *desc_info;
194 unsigned int type;
195 };
196
197 struct rocker;
198
199 enum {
200 ROCKER_CTRL_LINK_LOCAL_MCAST,
201 ROCKER_CTRL_LOCAL_ARP,
202 ROCKER_CTRL_IPV4_MCAST,
203 ROCKER_CTRL_IPV6_MCAST,
204 ROCKER_CTRL_DFLT_BRIDGING,
205 ROCKER_CTRL_MAX,
206 };
207
208 #define ROCKER_INTERNAL_VLAN_ID_BASE 0x0f00
209 #define ROCKER_N_INTERNAL_VLANS 255
210 #define ROCKER_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
211 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
212
213 struct rocker_port {
214 struct net_device *dev;
215 struct net_device *bridge_dev;
216 struct rocker *rocker;
217 unsigned int port_number;
218 u32 pport;
219 __be16 internal_vlan_id;
220 int stp_state;
221 u32 brport_flags;
222 bool ctrls[ROCKER_CTRL_MAX];
223 unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
224 struct napi_struct napi_tx;
225 struct napi_struct napi_rx;
226 struct rocker_dma_ring_info tx_ring;
227 struct rocker_dma_ring_info rx_ring;
228 };
229
230 struct rocker {
231 struct pci_dev *pdev;
232 u8 __iomem *hw_addr;
233 struct msix_entry *msix_entries;
234 unsigned int port_count;
235 struct rocker_port **ports;
236 struct {
237 u64 id;
238 } hw;
239 spinlock_t cmd_ring_lock;
240 struct rocker_dma_ring_info cmd_ring;
241 struct rocker_dma_ring_info event_ring;
242 DECLARE_HASHTABLE(flow_tbl, 16);
243 spinlock_t flow_tbl_lock;
244 u64 flow_tbl_next_cookie;
245 DECLARE_HASHTABLE(group_tbl, 16);
246 spinlock_t group_tbl_lock;
247 DECLARE_HASHTABLE(fdb_tbl, 16);
248 spinlock_t fdb_tbl_lock;
249 unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
250 DECLARE_HASHTABLE(internal_vlan_tbl, 8);
251 spinlock_t internal_vlan_tbl_lock;
252 DECLARE_HASHTABLE(neigh_tbl, 16);
253 spinlock_t neigh_tbl_lock;
254 u32 neigh_tbl_next_index;
255 };
256
257 static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
258 static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
259 static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
260 static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
261 static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
262 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
263 static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
264 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
265 static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
266
267 /* Rocker priority levels for flow table entries. Higher
268 * priority match takes precedence over lower priority match.
269 */
270
271 enum {
272 ROCKER_PRIORITY_UNKNOWN = 0,
273 ROCKER_PRIORITY_IG_PORT = 1,
274 ROCKER_PRIORITY_VLAN = 1,
275 ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
276 ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
277 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
278 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
279 ROCKER_PRIORITY_BRIDGING_VLAN = 3,
280 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
281 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
282 ROCKER_PRIORITY_BRIDGING_TENANT = 3,
283 ROCKER_PRIORITY_ACL_CTRL = 3,
284 ROCKER_PRIORITY_ACL_NORMAL = 2,
285 ROCKER_PRIORITY_ACL_DFLT = 1,
286 };
287
rocker_vlan_id_is_internal(__be16 vlan_id)288 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
289 {
290 u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
291 u16 end = 0xffe;
292 u16 _vlan_id = ntohs(vlan_id);
293
294 return (_vlan_id >= start && _vlan_id <= end);
295 }
296
rocker_port_vid_to_vlan(struct rocker_port * rocker_port,u16 vid,bool * pop_vlan)297 static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port,
298 u16 vid, bool *pop_vlan)
299 {
300 __be16 vlan_id;
301
302 if (pop_vlan)
303 *pop_vlan = false;
304 vlan_id = htons(vid);
305 if (!vlan_id) {
306 vlan_id = rocker_port->internal_vlan_id;
307 if (pop_vlan)
308 *pop_vlan = true;
309 }
310
311 return vlan_id;
312 }
313
rocker_port_vlan_to_vid(struct rocker_port * rocker_port,__be16 vlan_id)314 static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port,
315 __be16 vlan_id)
316 {
317 if (rocker_vlan_id_is_internal(vlan_id))
318 return 0;
319
320 return ntohs(vlan_id);
321 }
322
rocker_port_is_bridged(struct rocker_port * rocker_port)323 static bool rocker_port_is_bridged(struct rocker_port *rocker_port)
324 {
325 return !!rocker_port->bridge_dev;
326 }
327
328 struct rocker_wait {
329 wait_queue_head_t wait;
330 bool done;
331 bool nowait;
332 };
333
rocker_wait_reset(struct rocker_wait * wait)334 static void rocker_wait_reset(struct rocker_wait *wait)
335 {
336 wait->done = false;
337 wait->nowait = false;
338 }
339
rocker_wait_init(struct rocker_wait * wait)340 static void rocker_wait_init(struct rocker_wait *wait)
341 {
342 init_waitqueue_head(&wait->wait);
343 rocker_wait_reset(wait);
344 }
345
rocker_wait_create(gfp_t gfp)346 static struct rocker_wait *rocker_wait_create(gfp_t gfp)
347 {
348 struct rocker_wait *wait;
349
350 wait = kmalloc(sizeof(*wait), gfp);
351 if (!wait)
352 return NULL;
353 rocker_wait_init(wait);
354 return wait;
355 }
356
rocker_wait_destroy(struct rocker_wait * work)357 static void rocker_wait_destroy(struct rocker_wait *work)
358 {
359 kfree(work);
360 }
361
rocker_wait_event_timeout(struct rocker_wait * wait,unsigned long timeout)362 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
363 unsigned long timeout)
364 {
365 wait_event_timeout(wait->wait, wait->done, HZ / 10);
366 if (!wait->done)
367 return false;
368 return true;
369 }
370
rocker_wait_wake_up(struct rocker_wait * wait)371 static void rocker_wait_wake_up(struct rocker_wait *wait)
372 {
373 wait->done = true;
374 wake_up(&wait->wait);
375 }
376
rocker_msix_vector(struct rocker * rocker,unsigned int vector)377 static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector)
378 {
379 return rocker->msix_entries[vector].vector;
380 }
381
rocker_msix_tx_vector(struct rocker_port * rocker_port)382 static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port)
383 {
384 return rocker_msix_vector(rocker_port->rocker,
385 ROCKER_MSIX_VEC_TX(rocker_port->port_number));
386 }
387
rocker_msix_rx_vector(struct rocker_port * rocker_port)388 static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port)
389 {
390 return rocker_msix_vector(rocker_port->rocker,
391 ROCKER_MSIX_VEC_RX(rocker_port->port_number));
392 }
393
394 #define rocker_write32(rocker, reg, val) \
395 writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
396 #define rocker_read32(rocker, reg) \
397 readl((rocker)->hw_addr + (ROCKER_ ## reg))
398 #define rocker_write64(rocker, reg, val) \
399 writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
400 #define rocker_read64(rocker, reg) \
401 readq((rocker)->hw_addr + (ROCKER_ ## reg))
402
403 /*****************************
404 * HW basic testing functions
405 *****************************/
406
rocker_reg_test(struct rocker * rocker)407 static int rocker_reg_test(struct rocker *rocker)
408 {
409 struct pci_dev *pdev = rocker->pdev;
410 u64 test_reg;
411 u64 rnd;
412
413 rnd = prandom_u32();
414 rnd >>= 1;
415 rocker_write32(rocker, TEST_REG, rnd);
416 test_reg = rocker_read32(rocker, TEST_REG);
417 if (test_reg != rnd * 2) {
418 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
419 test_reg, rnd * 2);
420 return -EIO;
421 }
422
423 rnd = prandom_u32();
424 rnd <<= 31;
425 rnd |= prandom_u32();
426 rocker_write64(rocker, TEST_REG64, rnd);
427 test_reg = rocker_read64(rocker, TEST_REG64);
428 if (test_reg != rnd * 2) {
429 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
430 test_reg, rnd * 2);
431 return -EIO;
432 }
433
434 return 0;
435 }
436
rocker_dma_test_one(struct rocker * rocker,struct rocker_wait * wait,u32 test_type,dma_addr_t dma_handle,unsigned char * buf,unsigned char * expect,size_t size)437 static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait,
438 u32 test_type, dma_addr_t dma_handle,
439 unsigned char *buf, unsigned char *expect,
440 size_t size)
441 {
442 struct pci_dev *pdev = rocker->pdev;
443 int i;
444
445 rocker_wait_reset(wait);
446 rocker_write32(rocker, TEST_DMA_CTRL, test_type);
447
448 if (!rocker_wait_event_timeout(wait, HZ / 10)) {
449 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
450 return -EIO;
451 }
452
453 for (i = 0; i < size; i++) {
454 if (buf[i] != expect[i]) {
455 dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
456 buf[i], i, expect[i]);
457 return -EIO;
458 }
459 }
460 return 0;
461 }
462
463 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
464 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
465
rocker_dma_test_offset(struct rocker * rocker,struct rocker_wait * wait,int offset)466 static int rocker_dma_test_offset(struct rocker *rocker,
467 struct rocker_wait *wait, int offset)
468 {
469 struct pci_dev *pdev = rocker->pdev;
470 unsigned char *alloc;
471 unsigned char *buf;
472 unsigned char *expect;
473 dma_addr_t dma_handle;
474 int i;
475 int err;
476
477 alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
478 GFP_KERNEL | GFP_DMA);
479 if (!alloc)
480 return -ENOMEM;
481 buf = alloc + offset;
482 expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
483
484 dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
485 PCI_DMA_BIDIRECTIONAL);
486 if (pci_dma_mapping_error(pdev, dma_handle)) {
487 err = -EIO;
488 goto free_alloc;
489 }
490
491 rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
492 rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
493
494 memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
495 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
496 dma_handle, buf, expect,
497 ROCKER_TEST_DMA_BUF_SIZE);
498 if (err)
499 goto unmap;
500
501 memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
502 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
503 dma_handle, buf, expect,
504 ROCKER_TEST_DMA_BUF_SIZE);
505 if (err)
506 goto unmap;
507
508 prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
509 for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
510 expect[i] = ~buf[i];
511 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
512 dma_handle, buf, expect,
513 ROCKER_TEST_DMA_BUF_SIZE);
514 if (err)
515 goto unmap;
516
517 unmap:
518 pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
519 PCI_DMA_BIDIRECTIONAL);
520 free_alloc:
521 kfree(alloc);
522
523 return err;
524 }
525
rocker_dma_test(struct rocker * rocker,struct rocker_wait * wait)526 static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait)
527 {
528 int i;
529 int err;
530
531 for (i = 0; i < 8; i++) {
532 err = rocker_dma_test_offset(rocker, wait, i);
533 if (err)
534 return err;
535 }
536 return 0;
537 }
538
rocker_test_irq_handler(int irq,void * dev_id)539 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
540 {
541 struct rocker_wait *wait = dev_id;
542
543 rocker_wait_wake_up(wait);
544
545 return IRQ_HANDLED;
546 }
547
rocker_basic_hw_test(struct rocker * rocker)548 static int rocker_basic_hw_test(struct rocker *rocker)
549 {
550 struct pci_dev *pdev = rocker->pdev;
551 struct rocker_wait wait;
552 int err;
553
554 err = rocker_reg_test(rocker);
555 if (err) {
556 dev_err(&pdev->dev, "reg test failed\n");
557 return err;
558 }
559
560 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
561 rocker_test_irq_handler, 0,
562 rocker_driver_name, &wait);
563 if (err) {
564 dev_err(&pdev->dev, "cannot assign test irq\n");
565 return err;
566 }
567
568 rocker_wait_init(&wait);
569 rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
570
571 if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
572 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
573 err = -EIO;
574 goto free_irq;
575 }
576
577 err = rocker_dma_test(rocker, &wait);
578 if (err)
579 dev_err(&pdev->dev, "dma test failed\n");
580
581 free_irq:
582 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
583 return err;
584 }
585
586 /******
587 * TLV
588 ******/
589
590 #define ROCKER_TLV_ALIGNTO 8U
591 #define ROCKER_TLV_ALIGN(len) \
592 (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
593 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
594
595 /* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
596 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
597 * | Header | Pad | Payload | Pad |
598 * | (struct rocker_tlv) | ing | | ing |
599 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
600 * <--------------------------- tlv->len -------------------------->
601 */
602
rocker_tlv_next(const struct rocker_tlv * tlv,int * remaining)603 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
604 int *remaining)
605 {
606 int totlen = ROCKER_TLV_ALIGN(tlv->len);
607
608 *remaining -= totlen;
609 return (struct rocker_tlv *) ((char *) tlv + totlen);
610 }
611
rocker_tlv_ok(const struct rocker_tlv * tlv,int remaining)612 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
613 {
614 return remaining >= (int) ROCKER_TLV_HDRLEN &&
615 tlv->len >= ROCKER_TLV_HDRLEN &&
616 tlv->len <= remaining;
617 }
618
619 #define rocker_tlv_for_each(pos, head, len, rem) \
620 for (pos = head, rem = len; \
621 rocker_tlv_ok(pos, rem); \
622 pos = rocker_tlv_next(pos, &(rem)))
623
624 #define rocker_tlv_for_each_nested(pos, tlv, rem) \
625 rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \
626 rocker_tlv_len(tlv), rem)
627
rocker_tlv_attr_size(int payload)628 static int rocker_tlv_attr_size(int payload)
629 {
630 return ROCKER_TLV_HDRLEN + payload;
631 }
632
rocker_tlv_total_size(int payload)633 static int rocker_tlv_total_size(int payload)
634 {
635 return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
636 }
637
rocker_tlv_padlen(int payload)638 static int rocker_tlv_padlen(int payload)
639 {
640 return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
641 }
642
rocker_tlv_type(const struct rocker_tlv * tlv)643 static int rocker_tlv_type(const struct rocker_tlv *tlv)
644 {
645 return tlv->type;
646 }
647
rocker_tlv_data(const struct rocker_tlv * tlv)648 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
649 {
650 return (char *) tlv + ROCKER_TLV_HDRLEN;
651 }
652
rocker_tlv_len(const struct rocker_tlv * tlv)653 static int rocker_tlv_len(const struct rocker_tlv *tlv)
654 {
655 return tlv->len - ROCKER_TLV_HDRLEN;
656 }
657
rocker_tlv_get_u8(const struct rocker_tlv * tlv)658 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
659 {
660 return *(u8 *) rocker_tlv_data(tlv);
661 }
662
rocker_tlv_get_u16(const struct rocker_tlv * tlv)663 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
664 {
665 return *(u16 *) rocker_tlv_data(tlv);
666 }
667
rocker_tlv_get_be16(const struct rocker_tlv * tlv)668 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
669 {
670 return *(__be16 *) rocker_tlv_data(tlv);
671 }
672
rocker_tlv_get_u32(const struct rocker_tlv * tlv)673 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
674 {
675 return *(u32 *) rocker_tlv_data(tlv);
676 }
677
rocker_tlv_get_u64(const struct rocker_tlv * tlv)678 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
679 {
680 return *(u64 *) rocker_tlv_data(tlv);
681 }
682
rocker_tlv_parse(struct rocker_tlv ** tb,int maxtype,const char * buf,int buf_len)683 static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
684 const char *buf, int buf_len)
685 {
686 const struct rocker_tlv *tlv;
687 const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
688 int rem;
689
690 memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
691
692 rocker_tlv_for_each(tlv, head, buf_len, rem) {
693 u32 type = rocker_tlv_type(tlv);
694
695 if (type > 0 && type <= maxtype)
696 tb[type] = (struct rocker_tlv *) tlv;
697 }
698 }
699
rocker_tlv_parse_nested(struct rocker_tlv ** tb,int maxtype,const struct rocker_tlv * tlv)700 static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
701 const struct rocker_tlv *tlv)
702 {
703 rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
704 rocker_tlv_len(tlv));
705 }
706
rocker_tlv_parse_desc(struct rocker_tlv ** tb,int maxtype,struct rocker_desc_info * desc_info)707 static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
708 struct rocker_desc_info *desc_info)
709 {
710 rocker_tlv_parse(tb, maxtype, desc_info->data,
711 desc_info->desc->tlv_size);
712 }
713
rocker_tlv_start(struct rocker_desc_info * desc_info)714 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
715 {
716 return (struct rocker_tlv *) ((char *) desc_info->data +
717 desc_info->tlv_size);
718 }
719
rocker_tlv_put(struct rocker_desc_info * desc_info,int attrtype,int attrlen,const void * data)720 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
721 int attrtype, int attrlen, const void *data)
722 {
723 int tail_room = desc_info->data_size - desc_info->tlv_size;
724 int total_size = rocker_tlv_total_size(attrlen);
725 struct rocker_tlv *tlv;
726
727 if (unlikely(tail_room < total_size))
728 return -EMSGSIZE;
729
730 tlv = rocker_tlv_start(desc_info);
731 desc_info->tlv_size += total_size;
732 tlv->type = attrtype;
733 tlv->len = rocker_tlv_attr_size(attrlen);
734 memcpy(rocker_tlv_data(tlv), data, attrlen);
735 memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
736 return 0;
737 }
738
rocker_tlv_put_u8(struct rocker_desc_info * desc_info,int attrtype,u8 value)739 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
740 int attrtype, u8 value)
741 {
742 return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
743 }
744
rocker_tlv_put_u16(struct rocker_desc_info * desc_info,int attrtype,u16 value)745 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
746 int attrtype, u16 value)
747 {
748 return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
749 }
750
rocker_tlv_put_be16(struct rocker_desc_info * desc_info,int attrtype,__be16 value)751 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
752 int attrtype, __be16 value)
753 {
754 return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
755 }
756
rocker_tlv_put_u32(struct rocker_desc_info * desc_info,int attrtype,u32 value)757 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
758 int attrtype, u32 value)
759 {
760 return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
761 }
762
rocker_tlv_put_be32(struct rocker_desc_info * desc_info,int attrtype,__be32 value)763 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
764 int attrtype, __be32 value)
765 {
766 return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
767 }
768
rocker_tlv_put_u64(struct rocker_desc_info * desc_info,int attrtype,u64 value)769 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
770 int attrtype, u64 value)
771 {
772 return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
773 }
774
775 static struct rocker_tlv *
rocker_tlv_nest_start(struct rocker_desc_info * desc_info,int attrtype)776 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
777 {
778 struct rocker_tlv *start = rocker_tlv_start(desc_info);
779
780 if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
781 return NULL;
782
783 return start;
784 }
785
rocker_tlv_nest_end(struct rocker_desc_info * desc_info,struct rocker_tlv * start)786 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
787 struct rocker_tlv *start)
788 {
789 start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
790 }
791
rocker_tlv_nest_cancel(struct rocker_desc_info * desc_info,struct rocker_tlv * start)792 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
793 struct rocker_tlv *start)
794 {
795 desc_info->tlv_size = (char *) start - desc_info->data;
796 }
797
798 /******************************************
799 * DMA rings and descriptors manipulations
800 ******************************************/
801
__pos_inc(u32 pos,size_t limit)802 static u32 __pos_inc(u32 pos, size_t limit)
803 {
804 return ++pos == limit ? 0 : pos;
805 }
806
rocker_desc_err(struct rocker_desc_info * desc_info)807 static int rocker_desc_err(struct rocker_desc_info *desc_info)
808 {
809 int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
810
811 switch (err) {
812 case ROCKER_OK:
813 return 0;
814 case -ROCKER_ENOENT:
815 return -ENOENT;
816 case -ROCKER_ENXIO:
817 return -ENXIO;
818 case -ROCKER_ENOMEM:
819 return -ENOMEM;
820 case -ROCKER_EEXIST:
821 return -EEXIST;
822 case -ROCKER_EINVAL:
823 return -EINVAL;
824 case -ROCKER_EMSGSIZE:
825 return -EMSGSIZE;
826 case -ROCKER_ENOTSUP:
827 return -EOPNOTSUPP;
828 case -ROCKER_ENOBUFS:
829 return -ENOBUFS;
830 }
831
832 return -EINVAL;
833 }
834
rocker_desc_gen_clear(struct rocker_desc_info * desc_info)835 static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
836 {
837 desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
838 }
839
rocker_desc_gen(struct rocker_desc_info * desc_info)840 static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
841 {
842 u32 comp_err = desc_info->desc->comp_err;
843
844 return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
845 }
846
rocker_desc_cookie_ptr_get(struct rocker_desc_info * desc_info)847 static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
848 {
849 return (void *)(uintptr_t)desc_info->desc->cookie;
850 }
851
rocker_desc_cookie_ptr_set(struct rocker_desc_info * desc_info,void * ptr)852 static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
853 void *ptr)
854 {
855 desc_info->desc->cookie = (uintptr_t) ptr;
856 }
857
858 static struct rocker_desc_info *
rocker_desc_head_get(struct rocker_dma_ring_info * info)859 rocker_desc_head_get(struct rocker_dma_ring_info *info)
860 {
861 static struct rocker_desc_info *desc_info;
862 u32 head = __pos_inc(info->head, info->size);
863
864 desc_info = &info->desc_info[info->head];
865 if (head == info->tail)
866 return NULL; /* ring full */
867 desc_info->tlv_size = 0;
868 return desc_info;
869 }
870
rocker_desc_commit(struct rocker_desc_info * desc_info)871 static void rocker_desc_commit(struct rocker_desc_info *desc_info)
872 {
873 desc_info->desc->buf_size = desc_info->data_size;
874 desc_info->desc->tlv_size = desc_info->tlv_size;
875 }
876
rocker_desc_head_set(struct rocker * rocker,struct rocker_dma_ring_info * info,struct rocker_desc_info * desc_info)877 static void rocker_desc_head_set(struct rocker *rocker,
878 struct rocker_dma_ring_info *info,
879 struct rocker_desc_info *desc_info)
880 {
881 u32 head = __pos_inc(info->head, info->size);
882
883 BUG_ON(head == info->tail);
884 rocker_desc_commit(desc_info);
885 info->head = head;
886 rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
887 }
888
889 static struct rocker_desc_info *
rocker_desc_tail_get(struct rocker_dma_ring_info * info)890 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
891 {
892 static struct rocker_desc_info *desc_info;
893
894 if (info->tail == info->head)
895 return NULL; /* nothing to be done between head and tail */
896 desc_info = &info->desc_info[info->tail];
897 if (!rocker_desc_gen(desc_info))
898 return NULL; /* gen bit not set, desc is not ready yet */
899 info->tail = __pos_inc(info->tail, info->size);
900 desc_info->tlv_size = desc_info->desc->tlv_size;
901 return desc_info;
902 }
903
rocker_dma_ring_credits_set(struct rocker * rocker,struct rocker_dma_ring_info * info,u32 credits)904 static void rocker_dma_ring_credits_set(struct rocker *rocker,
905 struct rocker_dma_ring_info *info,
906 u32 credits)
907 {
908 if (credits)
909 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
910 }
911
rocker_dma_ring_size_fix(size_t size)912 static unsigned long rocker_dma_ring_size_fix(size_t size)
913 {
914 return max(ROCKER_DMA_SIZE_MIN,
915 min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
916 }
917
rocker_dma_ring_create(struct rocker * rocker,unsigned int type,size_t size,struct rocker_dma_ring_info * info)918 static int rocker_dma_ring_create(struct rocker *rocker,
919 unsigned int type,
920 size_t size,
921 struct rocker_dma_ring_info *info)
922 {
923 int i;
924
925 BUG_ON(size != rocker_dma_ring_size_fix(size));
926 info->size = size;
927 info->type = type;
928 info->head = 0;
929 info->tail = 0;
930 info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
931 GFP_KERNEL);
932 if (!info->desc_info)
933 return -ENOMEM;
934
935 info->desc = pci_alloc_consistent(rocker->pdev,
936 info->size * sizeof(*info->desc),
937 &info->mapaddr);
938 if (!info->desc) {
939 kfree(info->desc_info);
940 return -ENOMEM;
941 }
942
943 for (i = 0; i < info->size; i++)
944 info->desc_info[i].desc = &info->desc[i];
945
946 rocker_write32(rocker, DMA_DESC_CTRL(info->type),
947 ROCKER_DMA_DESC_CTRL_RESET);
948 rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
949 rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
950
951 return 0;
952 }
953
rocker_dma_ring_destroy(struct rocker * rocker,struct rocker_dma_ring_info * info)954 static void rocker_dma_ring_destroy(struct rocker *rocker,
955 struct rocker_dma_ring_info *info)
956 {
957 rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
958
959 pci_free_consistent(rocker->pdev,
960 info->size * sizeof(struct rocker_desc),
961 info->desc, info->mapaddr);
962 kfree(info->desc_info);
963 }
964
rocker_dma_ring_pass_to_producer(struct rocker * rocker,struct rocker_dma_ring_info * info)965 static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
966 struct rocker_dma_ring_info *info)
967 {
968 int i;
969
970 BUG_ON(info->head || info->tail);
971
972 /* When ring is consumer, we need to advance head for each desc.
973 * That tells hw that the desc is ready to be used by it.
974 */
975 for (i = 0; i < info->size - 1; i++)
976 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
977 rocker_desc_commit(&info->desc_info[i]);
978 }
979
rocker_dma_ring_bufs_alloc(struct rocker * rocker,struct rocker_dma_ring_info * info,int direction,size_t buf_size)980 static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
981 struct rocker_dma_ring_info *info,
982 int direction, size_t buf_size)
983 {
984 struct pci_dev *pdev = rocker->pdev;
985 int i;
986 int err;
987
988 for (i = 0; i < info->size; i++) {
989 struct rocker_desc_info *desc_info = &info->desc_info[i];
990 struct rocker_desc *desc = &info->desc[i];
991 dma_addr_t dma_handle;
992 char *buf;
993
994 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
995 if (!buf) {
996 err = -ENOMEM;
997 goto rollback;
998 }
999
1000 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1001 if (pci_dma_mapping_error(pdev, dma_handle)) {
1002 kfree(buf);
1003 err = -EIO;
1004 goto rollback;
1005 }
1006
1007 desc_info->data = buf;
1008 desc_info->data_size = buf_size;
1009 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1010
1011 desc->buf_addr = dma_handle;
1012 desc->buf_size = buf_size;
1013 }
1014 return 0;
1015
1016 rollback:
1017 for (i--; i >= 0; i--) {
1018 struct rocker_desc_info *desc_info = &info->desc_info[i];
1019
1020 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1021 desc_info->data_size, direction);
1022 kfree(desc_info->data);
1023 }
1024 return err;
1025 }
1026
rocker_dma_ring_bufs_free(struct rocker * rocker,struct rocker_dma_ring_info * info,int direction)1027 static void rocker_dma_ring_bufs_free(struct rocker *rocker,
1028 struct rocker_dma_ring_info *info,
1029 int direction)
1030 {
1031 struct pci_dev *pdev = rocker->pdev;
1032 int i;
1033
1034 for (i = 0; i < info->size; i++) {
1035 struct rocker_desc_info *desc_info = &info->desc_info[i];
1036 struct rocker_desc *desc = &info->desc[i];
1037
1038 desc->buf_addr = 0;
1039 desc->buf_size = 0;
1040 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1041 desc_info->data_size, direction);
1042 kfree(desc_info->data);
1043 }
1044 }
1045
rocker_dma_rings_init(struct rocker * rocker)1046 static int rocker_dma_rings_init(struct rocker *rocker)
1047 {
1048 struct pci_dev *pdev = rocker->pdev;
1049 int err;
1050
1051 err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1052 ROCKER_DMA_CMD_DEFAULT_SIZE,
1053 &rocker->cmd_ring);
1054 if (err) {
1055 dev_err(&pdev->dev, "failed to create command dma ring\n");
1056 return err;
1057 }
1058
1059 spin_lock_init(&rocker->cmd_ring_lock);
1060
1061 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1062 PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1063 if (err) {
1064 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1065 goto err_dma_cmd_ring_bufs_alloc;
1066 }
1067
1068 err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1069 ROCKER_DMA_EVENT_DEFAULT_SIZE,
1070 &rocker->event_ring);
1071 if (err) {
1072 dev_err(&pdev->dev, "failed to create event dma ring\n");
1073 goto err_dma_event_ring_create;
1074 }
1075
1076 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1077 PCI_DMA_FROMDEVICE, PAGE_SIZE);
1078 if (err) {
1079 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1080 goto err_dma_event_ring_bufs_alloc;
1081 }
1082 rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1083 return 0;
1084
1085 err_dma_event_ring_bufs_alloc:
1086 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1087 err_dma_event_ring_create:
1088 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1089 PCI_DMA_BIDIRECTIONAL);
1090 err_dma_cmd_ring_bufs_alloc:
1091 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1092 return err;
1093 }
1094
rocker_dma_rings_fini(struct rocker * rocker)1095 static void rocker_dma_rings_fini(struct rocker *rocker)
1096 {
1097 rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1098 PCI_DMA_BIDIRECTIONAL);
1099 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1100 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1101 PCI_DMA_BIDIRECTIONAL);
1102 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1103 }
1104
rocker_dma_rx_ring_skb_map(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,struct sk_buff * skb,size_t buf_len)1105 static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1106 struct rocker_port *rocker_port,
1107 struct rocker_desc_info *desc_info,
1108 struct sk_buff *skb, size_t buf_len)
1109 {
1110 struct pci_dev *pdev = rocker->pdev;
1111 dma_addr_t dma_handle;
1112
1113 dma_handle = pci_map_single(pdev, skb->data, buf_len,
1114 PCI_DMA_FROMDEVICE);
1115 if (pci_dma_mapping_error(pdev, dma_handle))
1116 return -EIO;
1117 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1118 goto tlv_put_failure;
1119 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1120 goto tlv_put_failure;
1121 return 0;
1122
1123 tlv_put_failure:
1124 pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1125 desc_info->tlv_size = 0;
1126 return -EMSGSIZE;
1127 }
1128
rocker_port_rx_buf_len(struct rocker_port * rocker_port)1129 static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1130 {
1131 return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1132 }
1133
rocker_dma_rx_ring_skb_alloc(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info)1134 static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1135 struct rocker_port *rocker_port,
1136 struct rocker_desc_info *desc_info)
1137 {
1138 struct net_device *dev = rocker_port->dev;
1139 struct sk_buff *skb;
1140 size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1141 int err;
1142
1143 /* Ensure that hw will see tlv_size zero in case of an error.
1144 * That tells hw to use another descriptor.
1145 */
1146 rocker_desc_cookie_ptr_set(desc_info, NULL);
1147 desc_info->tlv_size = 0;
1148
1149 skb = netdev_alloc_skb_ip_align(dev, buf_len);
1150 if (!skb)
1151 return -ENOMEM;
1152 err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1153 skb, buf_len);
1154 if (err) {
1155 dev_kfree_skb_any(skb);
1156 return err;
1157 }
1158 rocker_desc_cookie_ptr_set(desc_info, skb);
1159 return 0;
1160 }
1161
rocker_dma_rx_ring_skb_unmap(struct rocker * rocker,struct rocker_tlv ** attrs)1162 static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1163 struct rocker_tlv **attrs)
1164 {
1165 struct pci_dev *pdev = rocker->pdev;
1166 dma_addr_t dma_handle;
1167 size_t len;
1168
1169 if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1170 !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1171 return;
1172 dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1173 len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1174 pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1175 }
1176
rocker_dma_rx_ring_skb_free(struct rocker * rocker,struct rocker_desc_info * desc_info)1177 static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1178 struct rocker_desc_info *desc_info)
1179 {
1180 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1181 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1182
1183 if (!skb)
1184 return;
1185 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1186 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1187 dev_kfree_skb_any(skb);
1188 }
1189
rocker_dma_rx_ring_skbs_alloc(struct rocker * rocker,struct rocker_port * rocker_port)1190 static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1191 struct rocker_port *rocker_port)
1192 {
1193 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1194 int i;
1195 int err;
1196
1197 for (i = 0; i < rx_ring->size; i++) {
1198 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1199 &rx_ring->desc_info[i]);
1200 if (err)
1201 goto rollback;
1202 }
1203 return 0;
1204
1205 rollback:
1206 for (i--; i >= 0; i--)
1207 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1208 return err;
1209 }
1210
rocker_dma_rx_ring_skbs_free(struct rocker * rocker,struct rocker_port * rocker_port)1211 static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1212 struct rocker_port *rocker_port)
1213 {
1214 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1215 int i;
1216
1217 for (i = 0; i < rx_ring->size; i++)
1218 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1219 }
1220
rocker_port_dma_rings_init(struct rocker_port * rocker_port)1221 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1222 {
1223 struct rocker *rocker = rocker_port->rocker;
1224 int err;
1225
1226 err = rocker_dma_ring_create(rocker,
1227 ROCKER_DMA_TX(rocker_port->port_number),
1228 ROCKER_DMA_TX_DEFAULT_SIZE,
1229 &rocker_port->tx_ring);
1230 if (err) {
1231 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1232 return err;
1233 }
1234
1235 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1236 PCI_DMA_TODEVICE,
1237 ROCKER_DMA_TX_DESC_SIZE);
1238 if (err) {
1239 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1240 goto err_dma_tx_ring_bufs_alloc;
1241 }
1242
1243 err = rocker_dma_ring_create(rocker,
1244 ROCKER_DMA_RX(rocker_port->port_number),
1245 ROCKER_DMA_RX_DEFAULT_SIZE,
1246 &rocker_port->rx_ring);
1247 if (err) {
1248 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1249 goto err_dma_rx_ring_create;
1250 }
1251
1252 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1253 PCI_DMA_BIDIRECTIONAL,
1254 ROCKER_DMA_RX_DESC_SIZE);
1255 if (err) {
1256 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1257 goto err_dma_rx_ring_bufs_alloc;
1258 }
1259
1260 err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1261 if (err) {
1262 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1263 goto err_dma_rx_ring_skbs_alloc;
1264 }
1265 rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1266
1267 return 0;
1268
1269 err_dma_rx_ring_skbs_alloc:
1270 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1271 PCI_DMA_BIDIRECTIONAL);
1272 err_dma_rx_ring_bufs_alloc:
1273 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1274 err_dma_rx_ring_create:
1275 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1276 PCI_DMA_TODEVICE);
1277 err_dma_tx_ring_bufs_alloc:
1278 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1279 return err;
1280 }
1281
rocker_port_dma_rings_fini(struct rocker_port * rocker_port)1282 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1283 {
1284 struct rocker *rocker = rocker_port->rocker;
1285
1286 rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1287 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1288 PCI_DMA_BIDIRECTIONAL);
1289 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1290 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1291 PCI_DMA_TODEVICE);
1292 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1293 }
1294
rocker_port_set_enable(struct rocker_port * rocker_port,bool enable)1295 static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1296 {
1297 u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1298
1299 if (enable)
1300 val |= 1ULL << rocker_port->pport;
1301 else
1302 val &= ~(1ULL << rocker_port->pport);
1303 rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1304 }
1305
1306 /********************************
1307 * Interrupt handler and helpers
1308 ********************************/
1309
rocker_cmd_irq_handler(int irq,void * dev_id)1310 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1311 {
1312 struct rocker *rocker = dev_id;
1313 struct rocker_desc_info *desc_info;
1314 struct rocker_wait *wait;
1315 u32 credits = 0;
1316
1317 spin_lock(&rocker->cmd_ring_lock);
1318 while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1319 wait = rocker_desc_cookie_ptr_get(desc_info);
1320 if (wait->nowait) {
1321 rocker_desc_gen_clear(desc_info);
1322 rocker_wait_destroy(wait);
1323 } else {
1324 rocker_wait_wake_up(wait);
1325 }
1326 credits++;
1327 }
1328 spin_unlock(&rocker->cmd_ring_lock);
1329 rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1330
1331 return IRQ_HANDLED;
1332 }
1333
rocker_port_link_up(struct rocker_port * rocker_port)1334 static void rocker_port_link_up(struct rocker_port *rocker_port)
1335 {
1336 netif_carrier_on(rocker_port->dev);
1337 netdev_info(rocker_port->dev, "Link is up\n");
1338 }
1339
rocker_port_link_down(struct rocker_port * rocker_port)1340 static void rocker_port_link_down(struct rocker_port *rocker_port)
1341 {
1342 netif_carrier_off(rocker_port->dev);
1343 netdev_info(rocker_port->dev, "Link is down\n");
1344 }
1345
rocker_event_link_change(struct rocker * rocker,const struct rocker_tlv * info)1346 static int rocker_event_link_change(struct rocker *rocker,
1347 const struct rocker_tlv *info)
1348 {
1349 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1350 unsigned int port_number;
1351 bool link_up;
1352 struct rocker_port *rocker_port;
1353
1354 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1355 if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
1356 !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1357 return -EIO;
1358 port_number =
1359 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
1360 link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1361
1362 if (port_number >= rocker->port_count)
1363 return -EINVAL;
1364
1365 rocker_port = rocker->ports[port_number];
1366 if (netif_carrier_ok(rocker_port->dev) != link_up) {
1367 if (link_up)
1368 rocker_port_link_up(rocker_port);
1369 else
1370 rocker_port_link_down(rocker_port);
1371 }
1372
1373 return 0;
1374 }
1375
1376 #define ROCKER_OP_FLAG_REMOVE BIT(0)
1377 #define ROCKER_OP_FLAG_NOWAIT BIT(1)
1378 #define ROCKER_OP_FLAG_LEARNED BIT(2)
1379 #define ROCKER_OP_FLAG_REFRESH BIT(3)
1380
1381 static int rocker_port_fdb(struct rocker_port *rocker_port,
1382 const unsigned char *addr,
1383 __be16 vlan_id, int flags);
1384
rocker_event_mac_vlan_seen(struct rocker * rocker,const struct rocker_tlv * info)1385 static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1386 const struct rocker_tlv *info)
1387 {
1388 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1389 unsigned int port_number;
1390 struct rocker_port *rocker_port;
1391 unsigned char *addr;
1392 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1393 __be16 vlan_id;
1394
1395 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1396 if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
1397 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1398 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1399 return -EIO;
1400 port_number =
1401 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
1402 addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1403 vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1404
1405 if (port_number >= rocker->port_count)
1406 return -EINVAL;
1407
1408 rocker_port = rocker->ports[port_number];
1409
1410 if (rocker_port->stp_state != BR_STATE_LEARNING &&
1411 rocker_port->stp_state != BR_STATE_FORWARDING)
1412 return 0;
1413
1414 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
1415 }
1416
rocker_event_process(struct rocker * rocker,struct rocker_desc_info * desc_info)1417 static int rocker_event_process(struct rocker *rocker,
1418 struct rocker_desc_info *desc_info)
1419 {
1420 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1421 struct rocker_tlv *info;
1422 u16 type;
1423
1424 rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1425 if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1426 !attrs[ROCKER_TLV_EVENT_INFO])
1427 return -EIO;
1428
1429 type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1430 info = attrs[ROCKER_TLV_EVENT_INFO];
1431
1432 switch (type) {
1433 case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1434 return rocker_event_link_change(rocker, info);
1435 case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1436 return rocker_event_mac_vlan_seen(rocker, info);
1437 }
1438
1439 return -EOPNOTSUPP;
1440 }
1441
rocker_event_irq_handler(int irq,void * dev_id)1442 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1443 {
1444 struct rocker *rocker = dev_id;
1445 struct pci_dev *pdev = rocker->pdev;
1446 struct rocker_desc_info *desc_info;
1447 u32 credits = 0;
1448 int err;
1449
1450 while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1451 err = rocker_desc_err(desc_info);
1452 if (err) {
1453 dev_err(&pdev->dev, "event desc received with err %d\n",
1454 err);
1455 } else {
1456 err = rocker_event_process(rocker, desc_info);
1457 if (err)
1458 dev_err(&pdev->dev, "event processing failed with err %d\n",
1459 err);
1460 }
1461 rocker_desc_gen_clear(desc_info);
1462 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1463 credits++;
1464 }
1465 rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1466
1467 return IRQ_HANDLED;
1468 }
1469
rocker_tx_irq_handler(int irq,void * dev_id)1470 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1471 {
1472 struct rocker_port *rocker_port = dev_id;
1473
1474 napi_schedule(&rocker_port->napi_tx);
1475 return IRQ_HANDLED;
1476 }
1477
rocker_rx_irq_handler(int irq,void * dev_id)1478 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1479 {
1480 struct rocker_port *rocker_port = dev_id;
1481
1482 napi_schedule(&rocker_port->napi_rx);
1483 return IRQ_HANDLED;
1484 }
1485
1486 /********************
1487 * Command interface
1488 ********************/
1489
1490 typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1491 struct rocker_port *rocker_port,
1492 struct rocker_desc_info *desc_info,
1493 void *priv);
1494
rocker_cmd_exec(struct rocker * rocker,struct rocker_port * rocker_port,rocker_cmd_cb_t prepare,void * prepare_priv,rocker_cmd_cb_t process,void * process_priv,bool nowait)1495 static int rocker_cmd_exec(struct rocker *rocker,
1496 struct rocker_port *rocker_port,
1497 rocker_cmd_cb_t prepare, void *prepare_priv,
1498 rocker_cmd_cb_t process, void *process_priv,
1499 bool nowait)
1500 {
1501 struct rocker_desc_info *desc_info;
1502 struct rocker_wait *wait;
1503 unsigned long flags;
1504 int err;
1505
1506 wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL);
1507 if (!wait)
1508 return -ENOMEM;
1509 wait->nowait = nowait;
1510
1511 spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1512 desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1513 if (!desc_info) {
1514 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1515 err = -EAGAIN;
1516 goto out;
1517 }
1518 err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1519 if (err) {
1520 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1521 goto out;
1522 }
1523 rocker_desc_cookie_ptr_set(desc_info, wait);
1524 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1525 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1526
1527 if (nowait)
1528 return 0;
1529
1530 if (!rocker_wait_event_timeout(wait, HZ / 10))
1531 return -EIO;
1532
1533 err = rocker_desc_err(desc_info);
1534 if (err)
1535 return err;
1536
1537 if (process)
1538 err = process(rocker, rocker_port, desc_info, process_priv);
1539
1540 rocker_desc_gen_clear(desc_info);
1541 out:
1542 rocker_wait_destroy(wait);
1543 return err;
1544 }
1545
1546 static int
rocker_cmd_get_port_settings_prep(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)1547 rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1548 struct rocker_port *rocker_port,
1549 struct rocker_desc_info *desc_info,
1550 void *priv)
1551 {
1552 struct rocker_tlv *cmd_info;
1553
1554 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1555 ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1556 return -EMSGSIZE;
1557 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1558 if (!cmd_info)
1559 return -EMSGSIZE;
1560 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1561 rocker_port->pport))
1562 return -EMSGSIZE;
1563 rocker_tlv_nest_end(desc_info, cmd_info);
1564 return 0;
1565 }
1566
1567 static int
rocker_cmd_get_port_settings_ethtool_proc(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)1568 rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1569 struct rocker_port *rocker_port,
1570 struct rocker_desc_info *desc_info,
1571 void *priv)
1572 {
1573 struct ethtool_cmd *ecmd = priv;
1574 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1575 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1576 u32 speed;
1577 u8 duplex;
1578 u8 autoneg;
1579
1580 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1581 if (!attrs[ROCKER_TLV_CMD_INFO])
1582 return -EIO;
1583
1584 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1585 attrs[ROCKER_TLV_CMD_INFO]);
1586 if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1587 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1588 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1589 return -EIO;
1590
1591 speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1592 duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1593 autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1594
1595 ecmd->transceiver = XCVR_INTERNAL;
1596 ecmd->supported = SUPPORTED_TP;
1597 ecmd->phy_address = 0xff;
1598 ecmd->port = PORT_TP;
1599 ethtool_cmd_speed_set(ecmd, speed);
1600 ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1601 ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1602
1603 return 0;
1604 }
1605
1606 static int
rocker_cmd_get_port_settings_macaddr_proc(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)1607 rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1608 struct rocker_port *rocker_port,
1609 struct rocker_desc_info *desc_info,
1610 void *priv)
1611 {
1612 unsigned char *macaddr = priv;
1613 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1614 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1615 struct rocker_tlv *attr;
1616
1617 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1618 if (!attrs[ROCKER_TLV_CMD_INFO])
1619 return -EIO;
1620
1621 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1622 attrs[ROCKER_TLV_CMD_INFO]);
1623 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1624 if (!attr)
1625 return -EIO;
1626
1627 if (rocker_tlv_len(attr) != ETH_ALEN)
1628 return -EINVAL;
1629
1630 ether_addr_copy(macaddr, rocker_tlv_data(attr));
1631 return 0;
1632 }
1633
1634 struct port_name {
1635 char *buf;
1636 size_t len;
1637 };
1638
1639 static int
rocker_cmd_get_port_settings_phys_name_proc(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)1640 rocker_cmd_get_port_settings_phys_name_proc(struct rocker *rocker,
1641 struct rocker_port *rocker_port,
1642 struct rocker_desc_info *desc_info,
1643 void *priv)
1644 {
1645 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1646 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1647 struct port_name *name = priv;
1648 struct rocker_tlv *attr;
1649 size_t i, j, len;
1650 char *str;
1651
1652 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1653 if (!attrs[ROCKER_TLV_CMD_INFO])
1654 return -EIO;
1655
1656 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1657 attrs[ROCKER_TLV_CMD_INFO]);
1658 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME];
1659 if (!attr)
1660 return -EIO;
1661
1662 len = min_t(size_t, rocker_tlv_len(attr), name->len);
1663 str = rocker_tlv_data(attr);
1664
1665 /* make sure name only contains alphanumeric characters */
1666 for (i = j = 0; i < len; ++i) {
1667 if (isalnum(str[i])) {
1668 name->buf[j] = str[i];
1669 j++;
1670 }
1671 }
1672
1673 if (j == 0)
1674 return -EIO;
1675
1676 name->buf[j] = '\0';
1677
1678 return 0;
1679 }
1680
1681 static int
rocker_cmd_set_port_settings_ethtool_prep(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)1682 rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1683 struct rocker_port *rocker_port,
1684 struct rocker_desc_info *desc_info,
1685 void *priv)
1686 {
1687 struct ethtool_cmd *ecmd = priv;
1688 struct rocker_tlv *cmd_info;
1689
1690 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1691 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1692 return -EMSGSIZE;
1693 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1694 if (!cmd_info)
1695 return -EMSGSIZE;
1696 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1697 rocker_port->pport))
1698 return -EMSGSIZE;
1699 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1700 ethtool_cmd_speed(ecmd)))
1701 return -EMSGSIZE;
1702 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1703 ecmd->duplex))
1704 return -EMSGSIZE;
1705 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1706 ecmd->autoneg))
1707 return -EMSGSIZE;
1708 rocker_tlv_nest_end(desc_info, cmd_info);
1709 return 0;
1710 }
1711
1712 static int
rocker_cmd_set_port_settings_macaddr_prep(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)1713 rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1714 struct rocker_port *rocker_port,
1715 struct rocker_desc_info *desc_info,
1716 void *priv)
1717 {
1718 unsigned char *macaddr = priv;
1719 struct rocker_tlv *cmd_info;
1720
1721 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1722 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1723 return -EMSGSIZE;
1724 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1725 if (!cmd_info)
1726 return -EMSGSIZE;
1727 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1728 rocker_port->pport))
1729 return -EMSGSIZE;
1730 if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1731 ETH_ALEN, macaddr))
1732 return -EMSGSIZE;
1733 rocker_tlv_nest_end(desc_info, cmd_info);
1734 return 0;
1735 }
1736
1737 static int
rocker_cmd_set_port_learning_prep(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)1738 rocker_cmd_set_port_learning_prep(struct rocker *rocker,
1739 struct rocker_port *rocker_port,
1740 struct rocker_desc_info *desc_info,
1741 void *priv)
1742 {
1743 struct rocker_tlv *cmd_info;
1744
1745 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1746 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1747 return -EMSGSIZE;
1748 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1749 if (!cmd_info)
1750 return -EMSGSIZE;
1751 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1752 rocker_port->pport))
1753 return -EMSGSIZE;
1754 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1755 !!(rocker_port->brport_flags & BR_LEARNING)))
1756 return -EMSGSIZE;
1757 rocker_tlv_nest_end(desc_info, cmd_info);
1758 return 0;
1759 }
1760
rocker_cmd_get_port_settings_ethtool(struct rocker_port * rocker_port,struct ethtool_cmd * ecmd)1761 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1762 struct ethtool_cmd *ecmd)
1763 {
1764 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1765 rocker_cmd_get_port_settings_prep, NULL,
1766 rocker_cmd_get_port_settings_ethtool_proc,
1767 ecmd, false);
1768 }
1769
rocker_cmd_get_port_settings_macaddr(struct rocker_port * rocker_port,unsigned char * macaddr)1770 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1771 unsigned char *macaddr)
1772 {
1773 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1774 rocker_cmd_get_port_settings_prep, NULL,
1775 rocker_cmd_get_port_settings_macaddr_proc,
1776 macaddr, false);
1777 }
1778
rocker_cmd_set_port_settings_ethtool(struct rocker_port * rocker_port,struct ethtool_cmd * ecmd)1779 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1780 struct ethtool_cmd *ecmd)
1781 {
1782 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1783 rocker_cmd_set_port_settings_ethtool_prep,
1784 ecmd, NULL, NULL, false);
1785 }
1786
rocker_cmd_set_port_settings_macaddr(struct rocker_port * rocker_port,unsigned char * macaddr)1787 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1788 unsigned char *macaddr)
1789 {
1790 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1791 rocker_cmd_set_port_settings_macaddr_prep,
1792 macaddr, NULL, NULL, false);
1793 }
1794
rocker_port_set_learning(struct rocker_port * rocker_port)1795 static int rocker_port_set_learning(struct rocker_port *rocker_port)
1796 {
1797 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1798 rocker_cmd_set_port_learning_prep,
1799 NULL, NULL, NULL, false);
1800 }
1801
rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info * desc_info,struct rocker_flow_tbl_entry * entry)1802 static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1803 struct rocker_flow_tbl_entry *entry)
1804 {
1805 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1806 entry->key.ig_port.in_pport))
1807 return -EMSGSIZE;
1808 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1809 entry->key.ig_port.in_pport_mask))
1810 return -EMSGSIZE;
1811 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1812 entry->key.ig_port.goto_tbl))
1813 return -EMSGSIZE;
1814
1815 return 0;
1816 }
1817
rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info * desc_info,struct rocker_flow_tbl_entry * entry)1818 static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1819 struct rocker_flow_tbl_entry *entry)
1820 {
1821 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1822 entry->key.vlan.in_pport))
1823 return -EMSGSIZE;
1824 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1825 entry->key.vlan.vlan_id))
1826 return -EMSGSIZE;
1827 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1828 entry->key.vlan.vlan_id_mask))
1829 return -EMSGSIZE;
1830 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1831 entry->key.vlan.goto_tbl))
1832 return -EMSGSIZE;
1833 if (entry->key.vlan.untagged &&
1834 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1835 entry->key.vlan.new_vlan_id))
1836 return -EMSGSIZE;
1837
1838 return 0;
1839 }
1840
rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info * desc_info,struct rocker_flow_tbl_entry * entry)1841 static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1842 struct rocker_flow_tbl_entry *entry)
1843 {
1844 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1845 entry->key.term_mac.in_pport))
1846 return -EMSGSIZE;
1847 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1848 entry->key.term_mac.in_pport_mask))
1849 return -EMSGSIZE;
1850 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1851 entry->key.term_mac.eth_type))
1852 return -EMSGSIZE;
1853 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1854 ETH_ALEN, entry->key.term_mac.eth_dst))
1855 return -EMSGSIZE;
1856 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1857 ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1858 return -EMSGSIZE;
1859 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1860 entry->key.term_mac.vlan_id))
1861 return -EMSGSIZE;
1862 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1863 entry->key.term_mac.vlan_id_mask))
1864 return -EMSGSIZE;
1865 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1866 entry->key.term_mac.goto_tbl))
1867 return -EMSGSIZE;
1868 if (entry->key.term_mac.copy_to_cpu &&
1869 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1870 entry->key.term_mac.copy_to_cpu))
1871 return -EMSGSIZE;
1872
1873 return 0;
1874 }
1875
1876 static int
rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info * desc_info,struct rocker_flow_tbl_entry * entry)1877 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1878 struct rocker_flow_tbl_entry *entry)
1879 {
1880 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1881 entry->key.ucast_routing.eth_type))
1882 return -EMSGSIZE;
1883 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1884 entry->key.ucast_routing.dst4))
1885 return -EMSGSIZE;
1886 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1887 entry->key.ucast_routing.dst4_mask))
1888 return -EMSGSIZE;
1889 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1890 entry->key.ucast_routing.goto_tbl))
1891 return -EMSGSIZE;
1892 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1893 entry->key.ucast_routing.group_id))
1894 return -EMSGSIZE;
1895
1896 return 0;
1897 }
1898
rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info * desc_info,struct rocker_flow_tbl_entry * entry)1899 static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
1900 struct rocker_flow_tbl_entry *entry)
1901 {
1902 if (entry->key.bridge.has_eth_dst &&
1903 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1904 ETH_ALEN, entry->key.bridge.eth_dst))
1905 return -EMSGSIZE;
1906 if (entry->key.bridge.has_eth_dst_mask &&
1907 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1908 ETH_ALEN, entry->key.bridge.eth_dst_mask))
1909 return -EMSGSIZE;
1910 if (entry->key.bridge.vlan_id &&
1911 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1912 entry->key.bridge.vlan_id))
1913 return -EMSGSIZE;
1914 if (entry->key.bridge.tunnel_id &&
1915 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
1916 entry->key.bridge.tunnel_id))
1917 return -EMSGSIZE;
1918 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1919 entry->key.bridge.goto_tbl))
1920 return -EMSGSIZE;
1921 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1922 entry->key.bridge.group_id))
1923 return -EMSGSIZE;
1924 if (entry->key.bridge.copy_to_cpu &&
1925 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1926 entry->key.bridge.copy_to_cpu))
1927 return -EMSGSIZE;
1928
1929 return 0;
1930 }
1931
rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info * desc_info,struct rocker_flow_tbl_entry * entry)1932 static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
1933 struct rocker_flow_tbl_entry *entry)
1934 {
1935 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1936 entry->key.acl.in_pport))
1937 return -EMSGSIZE;
1938 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1939 entry->key.acl.in_pport_mask))
1940 return -EMSGSIZE;
1941 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1942 ETH_ALEN, entry->key.acl.eth_src))
1943 return -EMSGSIZE;
1944 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
1945 ETH_ALEN, entry->key.acl.eth_src_mask))
1946 return -EMSGSIZE;
1947 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1948 ETH_ALEN, entry->key.acl.eth_dst))
1949 return -EMSGSIZE;
1950 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1951 ETH_ALEN, entry->key.acl.eth_dst_mask))
1952 return -EMSGSIZE;
1953 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1954 entry->key.acl.eth_type))
1955 return -EMSGSIZE;
1956 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1957 entry->key.acl.vlan_id))
1958 return -EMSGSIZE;
1959 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1960 entry->key.acl.vlan_id_mask))
1961 return -EMSGSIZE;
1962
1963 switch (ntohs(entry->key.acl.eth_type)) {
1964 case ETH_P_IP:
1965 case ETH_P_IPV6:
1966 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
1967 entry->key.acl.ip_proto))
1968 return -EMSGSIZE;
1969 if (rocker_tlv_put_u8(desc_info,
1970 ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
1971 entry->key.acl.ip_proto_mask))
1972 return -EMSGSIZE;
1973 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
1974 entry->key.acl.ip_tos & 0x3f))
1975 return -EMSGSIZE;
1976 if (rocker_tlv_put_u8(desc_info,
1977 ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
1978 entry->key.acl.ip_tos_mask & 0x3f))
1979 return -EMSGSIZE;
1980 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
1981 (entry->key.acl.ip_tos & 0xc0) >> 6))
1982 return -EMSGSIZE;
1983 if (rocker_tlv_put_u8(desc_info,
1984 ROCKER_TLV_OF_DPA_IP_ECN_MASK,
1985 (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
1986 return -EMSGSIZE;
1987 break;
1988 }
1989
1990 if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
1991 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1992 entry->key.acl.group_id))
1993 return -EMSGSIZE;
1994
1995 return 0;
1996 }
1997
rocker_cmd_flow_tbl_add(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)1998 static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
1999 struct rocker_port *rocker_port,
2000 struct rocker_desc_info *desc_info,
2001 void *priv)
2002 {
2003 struct rocker_flow_tbl_entry *entry = priv;
2004 struct rocker_tlv *cmd_info;
2005 int err = 0;
2006
2007 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2008 return -EMSGSIZE;
2009 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2010 if (!cmd_info)
2011 return -EMSGSIZE;
2012 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
2013 entry->key.tbl_id))
2014 return -EMSGSIZE;
2015 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
2016 entry->key.priority))
2017 return -EMSGSIZE;
2018 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
2019 return -EMSGSIZE;
2020 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2021 entry->cookie))
2022 return -EMSGSIZE;
2023
2024 switch (entry->key.tbl_id) {
2025 case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
2026 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
2027 break;
2028 case ROCKER_OF_DPA_TABLE_ID_VLAN:
2029 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
2030 break;
2031 case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
2032 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
2033 break;
2034 case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
2035 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
2036 break;
2037 case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
2038 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
2039 break;
2040 case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
2041 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
2042 break;
2043 default:
2044 err = -ENOTSUPP;
2045 break;
2046 }
2047
2048 if (err)
2049 return err;
2050
2051 rocker_tlv_nest_end(desc_info, cmd_info);
2052
2053 return 0;
2054 }
2055
rocker_cmd_flow_tbl_del(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)2056 static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
2057 struct rocker_port *rocker_port,
2058 struct rocker_desc_info *desc_info,
2059 void *priv)
2060 {
2061 const struct rocker_flow_tbl_entry *entry = priv;
2062 struct rocker_tlv *cmd_info;
2063
2064 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2065 return -EMSGSIZE;
2066 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2067 if (!cmd_info)
2068 return -EMSGSIZE;
2069 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2070 entry->cookie))
2071 return -EMSGSIZE;
2072 rocker_tlv_nest_end(desc_info, cmd_info);
2073
2074 return 0;
2075 }
2076
2077 static int
rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info * desc_info,struct rocker_group_tbl_entry * entry)2078 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2079 struct rocker_group_tbl_entry *entry)
2080 {
2081 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
2082 ROCKER_GROUP_PORT_GET(entry->group_id)))
2083 return -EMSGSIZE;
2084 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2085 entry->l2_interface.pop_vlan))
2086 return -EMSGSIZE;
2087
2088 return 0;
2089 }
2090
2091 static int
rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info * desc_info,struct rocker_group_tbl_entry * entry)2092 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2093 struct rocker_group_tbl_entry *entry)
2094 {
2095 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2096 entry->l2_rewrite.group_id))
2097 return -EMSGSIZE;
2098 if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2099 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2100 ETH_ALEN, entry->l2_rewrite.eth_src))
2101 return -EMSGSIZE;
2102 if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2103 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2104 ETH_ALEN, entry->l2_rewrite.eth_dst))
2105 return -EMSGSIZE;
2106 if (entry->l2_rewrite.vlan_id &&
2107 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2108 entry->l2_rewrite.vlan_id))
2109 return -EMSGSIZE;
2110
2111 return 0;
2112 }
2113
2114 static int
rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info * desc_info,struct rocker_group_tbl_entry * entry)2115 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2116 struct rocker_group_tbl_entry *entry)
2117 {
2118 int i;
2119 struct rocker_tlv *group_ids;
2120
2121 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2122 entry->group_count))
2123 return -EMSGSIZE;
2124
2125 group_ids = rocker_tlv_nest_start(desc_info,
2126 ROCKER_TLV_OF_DPA_GROUP_IDS);
2127 if (!group_ids)
2128 return -EMSGSIZE;
2129
2130 for (i = 0; i < entry->group_count; i++)
2131 /* Note TLV array is 1-based */
2132 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2133 return -EMSGSIZE;
2134
2135 rocker_tlv_nest_end(desc_info, group_ids);
2136
2137 return 0;
2138 }
2139
2140 static int
rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info * desc_info,struct rocker_group_tbl_entry * entry)2141 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2142 struct rocker_group_tbl_entry *entry)
2143 {
2144 if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2145 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2146 ETH_ALEN, entry->l3_unicast.eth_src))
2147 return -EMSGSIZE;
2148 if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2149 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2150 ETH_ALEN, entry->l3_unicast.eth_dst))
2151 return -EMSGSIZE;
2152 if (entry->l3_unicast.vlan_id &&
2153 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2154 entry->l3_unicast.vlan_id))
2155 return -EMSGSIZE;
2156 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2157 entry->l3_unicast.ttl_check))
2158 return -EMSGSIZE;
2159 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2160 entry->l3_unicast.group_id))
2161 return -EMSGSIZE;
2162
2163 return 0;
2164 }
2165
rocker_cmd_group_tbl_add(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)2166 static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2167 struct rocker_port *rocker_port,
2168 struct rocker_desc_info *desc_info,
2169 void *priv)
2170 {
2171 struct rocker_group_tbl_entry *entry = priv;
2172 struct rocker_tlv *cmd_info;
2173 int err = 0;
2174
2175 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2176 return -EMSGSIZE;
2177 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2178 if (!cmd_info)
2179 return -EMSGSIZE;
2180
2181 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2182 entry->group_id))
2183 return -EMSGSIZE;
2184
2185 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2186 case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2187 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2188 break;
2189 case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2190 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2191 break;
2192 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2193 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2194 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2195 break;
2196 case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2197 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2198 break;
2199 default:
2200 err = -ENOTSUPP;
2201 break;
2202 }
2203
2204 if (err)
2205 return err;
2206
2207 rocker_tlv_nest_end(desc_info, cmd_info);
2208
2209 return 0;
2210 }
2211
rocker_cmd_group_tbl_del(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)2212 static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2213 struct rocker_port *rocker_port,
2214 struct rocker_desc_info *desc_info,
2215 void *priv)
2216 {
2217 const struct rocker_group_tbl_entry *entry = priv;
2218 struct rocker_tlv *cmd_info;
2219
2220 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2221 return -EMSGSIZE;
2222 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2223 if (!cmd_info)
2224 return -EMSGSIZE;
2225 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2226 entry->group_id))
2227 return -EMSGSIZE;
2228 rocker_tlv_nest_end(desc_info, cmd_info);
2229
2230 return 0;
2231 }
2232
2233 /***************************************************
2234 * Flow, group, FDB, internal VLAN and neigh tables
2235 ***************************************************/
2236
rocker_init_tbls(struct rocker * rocker)2237 static int rocker_init_tbls(struct rocker *rocker)
2238 {
2239 hash_init(rocker->flow_tbl);
2240 spin_lock_init(&rocker->flow_tbl_lock);
2241
2242 hash_init(rocker->group_tbl);
2243 spin_lock_init(&rocker->group_tbl_lock);
2244
2245 hash_init(rocker->fdb_tbl);
2246 spin_lock_init(&rocker->fdb_tbl_lock);
2247
2248 hash_init(rocker->internal_vlan_tbl);
2249 spin_lock_init(&rocker->internal_vlan_tbl_lock);
2250
2251 hash_init(rocker->neigh_tbl);
2252 spin_lock_init(&rocker->neigh_tbl_lock);
2253
2254 return 0;
2255 }
2256
rocker_free_tbls(struct rocker * rocker)2257 static void rocker_free_tbls(struct rocker *rocker)
2258 {
2259 unsigned long flags;
2260 struct rocker_flow_tbl_entry *flow_entry;
2261 struct rocker_group_tbl_entry *group_entry;
2262 struct rocker_fdb_tbl_entry *fdb_entry;
2263 struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2264 struct rocker_neigh_tbl_entry *neigh_entry;
2265 struct hlist_node *tmp;
2266 int bkt;
2267
2268 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2269 hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2270 hash_del(&flow_entry->entry);
2271 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2272
2273 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2274 hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2275 hash_del(&group_entry->entry);
2276 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2277
2278 spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2279 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2280 hash_del(&fdb_entry->entry);
2281 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2282
2283 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2284 hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2285 tmp, internal_vlan_entry, entry)
2286 hash_del(&internal_vlan_entry->entry);
2287 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2288
2289 spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2290 hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2291 hash_del(&neigh_entry->entry);
2292 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
2293 }
2294
2295 static struct rocker_flow_tbl_entry *
rocker_flow_tbl_find(struct rocker * rocker,struct rocker_flow_tbl_entry * match)2296 rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2297 {
2298 struct rocker_flow_tbl_entry *found;
2299 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2300
2301 hash_for_each_possible(rocker->flow_tbl, found,
2302 entry, match->key_crc32) {
2303 if (memcmp(&found->key, &match->key, key_len) == 0)
2304 return found;
2305 }
2306
2307 return NULL;
2308 }
2309
rocker_flow_tbl_add(struct rocker_port * rocker_port,struct rocker_flow_tbl_entry * match,bool nowait)2310 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2311 struct rocker_flow_tbl_entry *match,
2312 bool nowait)
2313 {
2314 struct rocker *rocker = rocker_port->rocker;
2315 struct rocker_flow_tbl_entry *found;
2316 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2317 unsigned long flags;
2318
2319 match->key_crc32 = crc32(~0, &match->key, key_len);
2320
2321 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2322
2323 found = rocker_flow_tbl_find(rocker, match);
2324
2325 if (found) {
2326 match->cookie = found->cookie;
2327 hash_del(&found->entry);
2328 kfree(found);
2329 found = match;
2330 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
2331 } else {
2332 found = match;
2333 found->cookie = rocker->flow_tbl_next_cookie++;
2334 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
2335 }
2336
2337 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2338
2339 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2340
2341 return rocker_cmd_exec(rocker, rocker_port,
2342 rocker_cmd_flow_tbl_add,
2343 found, NULL, NULL, nowait);
2344 }
2345
rocker_flow_tbl_del(struct rocker_port * rocker_port,struct rocker_flow_tbl_entry * match,bool nowait)2346 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2347 struct rocker_flow_tbl_entry *match,
2348 bool nowait)
2349 {
2350 struct rocker *rocker = rocker_port->rocker;
2351 struct rocker_flow_tbl_entry *found;
2352 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
2353 unsigned long flags;
2354 int err = 0;
2355
2356 match->key_crc32 = crc32(~0, &match->key, key_len);
2357
2358 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2359
2360 found = rocker_flow_tbl_find(rocker, match);
2361
2362 if (found) {
2363 hash_del(&found->entry);
2364 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
2365 }
2366
2367 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2368
2369 kfree(match);
2370
2371 if (found) {
2372 err = rocker_cmd_exec(rocker, rocker_port,
2373 rocker_cmd_flow_tbl_del,
2374 found, NULL, NULL, nowait);
2375 kfree(found);
2376 }
2377
2378 return err;
2379 }
2380
rocker_op_flags_gfp(int flags)2381 static gfp_t rocker_op_flags_gfp(int flags)
2382 {
2383 return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL;
2384 }
2385
rocker_flow_tbl_do(struct rocker_port * rocker_port,int flags,struct rocker_flow_tbl_entry * entry)2386 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2387 int flags, struct rocker_flow_tbl_entry *entry)
2388 {
2389 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2390
2391 if (flags & ROCKER_OP_FLAG_REMOVE)
2392 return rocker_flow_tbl_del(rocker_port, entry, nowait);
2393 else
2394 return rocker_flow_tbl_add(rocker_port, entry, nowait);
2395 }
2396
rocker_flow_tbl_ig_port(struct rocker_port * rocker_port,int flags,u32 in_pport,u32 in_pport_mask,enum rocker_of_dpa_table_id goto_tbl)2397 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2398 int flags, u32 in_pport, u32 in_pport_mask,
2399 enum rocker_of_dpa_table_id goto_tbl)
2400 {
2401 struct rocker_flow_tbl_entry *entry;
2402
2403 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2404 if (!entry)
2405 return -ENOMEM;
2406
2407 entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2408 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2409 entry->key.ig_port.in_pport = in_pport;
2410 entry->key.ig_port.in_pport_mask = in_pport_mask;
2411 entry->key.ig_port.goto_tbl = goto_tbl;
2412
2413 return rocker_flow_tbl_do(rocker_port, flags, entry);
2414 }
2415
rocker_flow_tbl_vlan(struct rocker_port * rocker_port,int flags,u32 in_pport,__be16 vlan_id,__be16 vlan_id_mask,enum rocker_of_dpa_table_id goto_tbl,bool untagged,__be16 new_vlan_id)2416 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2417 int flags, u32 in_pport,
2418 __be16 vlan_id, __be16 vlan_id_mask,
2419 enum rocker_of_dpa_table_id goto_tbl,
2420 bool untagged, __be16 new_vlan_id)
2421 {
2422 struct rocker_flow_tbl_entry *entry;
2423
2424 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2425 if (!entry)
2426 return -ENOMEM;
2427
2428 entry->key.priority = ROCKER_PRIORITY_VLAN;
2429 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2430 entry->key.vlan.in_pport = in_pport;
2431 entry->key.vlan.vlan_id = vlan_id;
2432 entry->key.vlan.vlan_id_mask = vlan_id_mask;
2433 entry->key.vlan.goto_tbl = goto_tbl;
2434
2435 entry->key.vlan.untagged = untagged;
2436 entry->key.vlan.new_vlan_id = new_vlan_id;
2437
2438 return rocker_flow_tbl_do(rocker_port, flags, entry);
2439 }
2440
rocker_flow_tbl_term_mac(struct rocker_port * rocker_port,u32 in_pport,u32 in_pport_mask,__be16 eth_type,const u8 * eth_dst,const u8 * eth_dst_mask,__be16 vlan_id,__be16 vlan_id_mask,bool copy_to_cpu,int flags)2441 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2442 u32 in_pport, u32 in_pport_mask,
2443 __be16 eth_type, const u8 *eth_dst,
2444 const u8 *eth_dst_mask, __be16 vlan_id,
2445 __be16 vlan_id_mask, bool copy_to_cpu,
2446 int flags)
2447 {
2448 struct rocker_flow_tbl_entry *entry;
2449
2450 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2451 if (!entry)
2452 return -ENOMEM;
2453
2454 if (is_multicast_ether_addr(eth_dst)) {
2455 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2456 entry->key.term_mac.goto_tbl =
2457 ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2458 } else {
2459 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2460 entry->key.term_mac.goto_tbl =
2461 ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2462 }
2463
2464 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2465 entry->key.term_mac.in_pport = in_pport;
2466 entry->key.term_mac.in_pport_mask = in_pport_mask;
2467 entry->key.term_mac.eth_type = eth_type;
2468 ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2469 ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2470 entry->key.term_mac.vlan_id = vlan_id;
2471 entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2472 entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2473
2474 return rocker_flow_tbl_do(rocker_port, flags, entry);
2475 }
2476
rocker_flow_tbl_bridge(struct rocker_port * rocker_port,int flags,const u8 * eth_dst,const u8 * eth_dst_mask,__be16 vlan_id,u32 tunnel_id,enum rocker_of_dpa_table_id goto_tbl,u32 group_id,bool copy_to_cpu)2477 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2478 int flags,
2479 const u8 *eth_dst, const u8 *eth_dst_mask,
2480 __be16 vlan_id, u32 tunnel_id,
2481 enum rocker_of_dpa_table_id goto_tbl,
2482 u32 group_id, bool copy_to_cpu)
2483 {
2484 struct rocker_flow_tbl_entry *entry;
2485 u32 priority;
2486 bool vlan_bridging = !!vlan_id;
2487 bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2488 bool wild = false;
2489
2490 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2491 if (!entry)
2492 return -ENOMEM;
2493
2494 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2495
2496 if (eth_dst) {
2497 entry->key.bridge.has_eth_dst = 1;
2498 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2499 }
2500 if (eth_dst_mask) {
2501 entry->key.bridge.has_eth_dst_mask = 1;
2502 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2503 if (memcmp(eth_dst_mask, ff_mac, ETH_ALEN))
2504 wild = true;
2505 }
2506
2507 priority = ROCKER_PRIORITY_UNKNOWN;
2508 if (vlan_bridging && dflt && wild)
2509 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2510 else if (vlan_bridging && dflt && !wild)
2511 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2512 else if (vlan_bridging && !dflt)
2513 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2514 else if (!vlan_bridging && dflt && wild)
2515 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2516 else if (!vlan_bridging && dflt && !wild)
2517 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2518 else if (!vlan_bridging && !dflt)
2519 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2520
2521 entry->key.priority = priority;
2522 entry->key.bridge.vlan_id = vlan_id;
2523 entry->key.bridge.tunnel_id = tunnel_id;
2524 entry->key.bridge.goto_tbl = goto_tbl;
2525 entry->key.bridge.group_id = group_id;
2526 entry->key.bridge.copy_to_cpu = copy_to_cpu;
2527
2528 return rocker_flow_tbl_do(rocker_port, flags, entry);
2529 }
2530
rocker_flow_tbl_ucast4_routing(struct rocker_port * rocker_port,__be16 eth_type,__be32 dst,__be32 dst_mask,u32 priority,enum rocker_of_dpa_table_id goto_tbl,u32 group_id,int flags)2531 static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2532 __be16 eth_type, __be32 dst,
2533 __be32 dst_mask, u32 priority,
2534 enum rocker_of_dpa_table_id goto_tbl,
2535 u32 group_id, int flags)
2536 {
2537 struct rocker_flow_tbl_entry *entry;
2538
2539 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2540 if (!entry)
2541 return -ENOMEM;
2542
2543 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2544 entry->key.priority = priority;
2545 entry->key.ucast_routing.eth_type = eth_type;
2546 entry->key.ucast_routing.dst4 = dst;
2547 entry->key.ucast_routing.dst4_mask = dst_mask;
2548 entry->key.ucast_routing.goto_tbl = goto_tbl;
2549 entry->key.ucast_routing.group_id = group_id;
2550 entry->key_len = offsetof(struct rocker_flow_tbl_key,
2551 ucast_routing.group_id);
2552
2553 return rocker_flow_tbl_do(rocker_port, flags, entry);
2554 }
2555
rocker_flow_tbl_acl(struct rocker_port * rocker_port,int flags,u32 in_pport,u32 in_pport_mask,const u8 * eth_src,const u8 * eth_src_mask,const u8 * eth_dst,const u8 * eth_dst_mask,__be16 eth_type,__be16 vlan_id,__be16 vlan_id_mask,u8 ip_proto,u8 ip_proto_mask,u8 ip_tos,u8 ip_tos_mask,u32 group_id)2556 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2557 int flags, u32 in_pport,
2558 u32 in_pport_mask,
2559 const u8 *eth_src, const u8 *eth_src_mask,
2560 const u8 *eth_dst, const u8 *eth_dst_mask,
2561 __be16 eth_type,
2562 __be16 vlan_id, __be16 vlan_id_mask,
2563 u8 ip_proto, u8 ip_proto_mask,
2564 u8 ip_tos, u8 ip_tos_mask,
2565 u32 group_id)
2566 {
2567 u32 priority;
2568 struct rocker_flow_tbl_entry *entry;
2569
2570 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2571 if (!entry)
2572 return -ENOMEM;
2573
2574 priority = ROCKER_PRIORITY_ACL_NORMAL;
2575 if (eth_dst && eth_dst_mask) {
2576 if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0)
2577 priority = ROCKER_PRIORITY_ACL_DFLT;
2578 else if (is_link_local_ether_addr(eth_dst))
2579 priority = ROCKER_PRIORITY_ACL_CTRL;
2580 }
2581
2582 entry->key.priority = priority;
2583 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2584 entry->key.acl.in_pport = in_pport;
2585 entry->key.acl.in_pport_mask = in_pport_mask;
2586
2587 if (eth_src)
2588 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2589 if (eth_src_mask)
2590 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2591 if (eth_dst)
2592 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2593 if (eth_dst_mask)
2594 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2595
2596 entry->key.acl.eth_type = eth_type;
2597 entry->key.acl.vlan_id = vlan_id;
2598 entry->key.acl.vlan_id_mask = vlan_id_mask;
2599 entry->key.acl.ip_proto = ip_proto;
2600 entry->key.acl.ip_proto_mask = ip_proto_mask;
2601 entry->key.acl.ip_tos = ip_tos;
2602 entry->key.acl.ip_tos_mask = ip_tos_mask;
2603 entry->key.acl.group_id = group_id;
2604
2605 return rocker_flow_tbl_do(rocker_port, flags, entry);
2606 }
2607
2608 static struct rocker_group_tbl_entry *
rocker_group_tbl_find(struct rocker * rocker,struct rocker_group_tbl_entry * match)2609 rocker_group_tbl_find(struct rocker *rocker,
2610 struct rocker_group_tbl_entry *match)
2611 {
2612 struct rocker_group_tbl_entry *found;
2613
2614 hash_for_each_possible(rocker->group_tbl, found,
2615 entry, match->group_id) {
2616 if (found->group_id == match->group_id)
2617 return found;
2618 }
2619
2620 return NULL;
2621 }
2622
rocker_group_tbl_entry_free(struct rocker_group_tbl_entry * entry)2623 static void rocker_group_tbl_entry_free(struct rocker_group_tbl_entry *entry)
2624 {
2625 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2626 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2627 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2628 kfree(entry->group_ids);
2629 break;
2630 default:
2631 break;
2632 }
2633 kfree(entry);
2634 }
2635
rocker_group_tbl_add(struct rocker_port * rocker_port,struct rocker_group_tbl_entry * match,bool nowait)2636 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2637 struct rocker_group_tbl_entry *match,
2638 bool nowait)
2639 {
2640 struct rocker *rocker = rocker_port->rocker;
2641 struct rocker_group_tbl_entry *found;
2642 unsigned long flags;
2643
2644 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2645
2646 found = rocker_group_tbl_find(rocker, match);
2647
2648 if (found) {
2649 hash_del(&found->entry);
2650 rocker_group_tbl_entry_free(found);
2651 found = match;
2652 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2653 } else {
2654 found = match;
2655 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2656 }
2657
2658 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2659
2660 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2661
2662 return rocker_cmd_exec(rocker, rocker_port,
2663 rocker_cmd_group_tbl_add,
2664 found, NULL, NULL, nowait);
2665 }
2666
rocker_group_tbl_del(struct rocker_port * rocker_port,struct rocker_group_tbl_entry * match,bool nowait)2667 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2668 struct rocker_group_tbl_entry *match,
2669 bool nowait)
2670 {
2671 struct rocker *rocker = rocker_port->rocker;
2672 struct rocker_group_tbl_entry *found;
2673 unsigned long flags;
2674 int err = 0;
2675
2676 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2677
2678 found = rocker_group_tbl_find(rocker, match);
2679
2680 if (found) {
2681 hash_del(&found->entry);
2682 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2683 }
2684
2685 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2686
2687 rocker_group_tbl_entry_free(match);
2688
2689 if (found) {
2690 err = rocker_cmd_exec(rocker, rocker_port,
2691 rocker_cmd_group_tbl_del,
2692 found, NULL, NULL, nowait);
2693 rocker_group_tbl_entry_free(found);
2694 }
2695
2696 return err;
2697 }
2698
rocker_group_tbl_do(struct rocker_port * rocker_port,int flags,struct rocker_group_tbl_entry * entry)2699 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2700 int flags, struct rocker_group_tbl_entry *entry)
2701 {
2702 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2703
2704 if (flags & ROCKER_OP_FLAG_REMOVE)
2705 return rocker_group_tbl_del(rocker_port, entry, nowait);
2706 else
2707 return rocker_group_tbl_add(rocker_port, entry, nowait);
2708 }
2709
rocker_group_l2_interface(struct rocker_port * rocker_port,int flags,__be16 vlan_id,u32 out_pport,int pop_vlan)2710 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2711 int flags, __be16 vlan_id,
2712 u32 out_pport, int pop_vlan)
2713 {
2714 struct rocker_group_tbl_entry *entry;
2715
2716 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2717 if (!entry)
2718 return -ENOMEM;
2719
2720 entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
2721 entry->l2_interface.pop_vlan = pop_vlan;
2722
2723 return rocker_group_tbl_do(rocker_port, flags, entry);
2724 }
2725
rocker_group_l2_fan_out(struct rocker_port * rocker_port,int flags,u8 group_count,u32 * group_ids,u32 group_id)2726 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2727 int flags, u8 group_count,
2728 u32 *group_ids, u32 group_id)
2729 {
2730 struct rocker_group_tbl_entry *entry;
2731
2732 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2733 if (!entry)
2734 return -ENOMEM;
2735
2736 entry->group_id = group_id;
2737 entry->group_count = group_count;
2738
2739 entry->group_ids = kcalloc(group_count, sizeof(u32),
2740 rocker_op_flags_gfp(flags));
2741 if (!entry->group_ids) {
2742 kfree(entry);
2743 return -ENOMEM;
2744 }
2745 memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2746
2747 return rocker_group_tbl_do(rocker_port, flags, entry);
2748 }
2749
rocker_group_l2_flood(struct rocker_port * rocker_port,int flags,__be16 vlan_id,u8 group_count,u32 * group_ids,u32 group_id)2750 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2751 int flags, __be16 vlan_id,
2752 u8 group_count, u32 *group_ids,
2753 u32 group_id)
2754 {
2755 return rocker_group_l2_fan_out(rocker_port, flags,
2756 group_count, group_ids,
2757 group_id);
2758 }
2759
rocker_group_l3_unicast(struct rocker_port * rocker_port,int flags,u32 index,u8 * src_mac,u8 * dst_mac,__be16 vlan_id,bool ttl_check,u32 pport)2760 static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2761 int flags, u32 index, u8 *src_mac,
2762 u8 *dst_mac, __be16 vlan_id,
2763 bool ttl_check, u32 pport)
2764 {
2765 struct rocker_group_tbl_entry *entry;
2766
2767 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2768 if (!entry)
2769 return -ENOMEM;
2770
2771 entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2772 if (src_mac)
2773 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2774 if (dst_mac)
2775 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2776 entry->l3_unicast.vlan_id = vlan_id;
2777 entry->l3_unicast.ttl_check = ttl_check;
2778 entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2779
2780 return rocker_group_tbl_do(rocker_port, flags, entry);
2781 }
2782
2783 static struct rocker_neigh_tbl_entry *
rocker_neigh_tbl_find(struct rocker * rocker,__be32 ip_addr)2784 rocker_neigh_tbl_find(struct rocker *rocker, __be32 ip_addr)
2785 {
2786 struct rocker_neigh_tbl_entry *found;
2787
2788 hash_for_each_possible(rocker->neigh_tbl, found,
2789 entry, be32_to_cpu(ip_addr))
2790 if (found->ip_addr == ip_addr)
2791 return found;
2792
2793 return NULL;
2794 }
2795
_rocker_neigh_add(struct rocker * rocker,struct rocker_neigh_tbl_entry * entry)2796 static void _rocker_neigh_add(struct rocker *rocker,
2797 struct rocker_neigh_tbl_entry *entry)
2798 {
2799 entry->index = rocker->neigh_tbl_next_index++;
2800 entry->ref_count++;
2801 hash_add(rocker->neigh_tbl, &entry->entry,
2802 be32_to_cpu(entry->ip_addr));
2803 }
2804
_rocker_neigh_del(struct rocker * rocker,struct rocker_neigh_tbl_entry * entry)2805 static void _rocker_neigh_del(struct rocker *rocker,
2806 struct rocker_neigh_tbl_entry *entry)
2807 {
2808 if (--entry->ref_count == 0) {
2809 hash_del(&entry->entry);
2810 kfree(entry);
2811 }
2812 }
2813
_rocker_neigh_update(struct rocker * rocker,struct rocker_neigh_tbl_entry * entry,u8 * eth_dst,bool ttl_check)2814 static void _rocker_neigh_update(struct rocker *rocker,
2815 struct rocker_neigh_tbl_entry *entry,
2816 u8 *eth_dst, bool ttl_check)
2817 {
2818 if (eth_dst) {
2819 ether_addr_copy(entry->eth_dst, eth_dst);
2820 entry->ttl_check = ttl_check;
2821 } else {
2822 entry->ref_count++;
2823 }
2824 }
2825
rocker_port_ipv4_neigh(struct rocker_port * rocker_port,int flags,__be32 ip_addr,u8 * eth_dst)2826 static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2827 int flags, __be32 ip_addr, u8 *eth_dst)
2828 {
2829 struct rocker *rocker = rocker_port->rocker;
2830 struct rocker_neigh_tbl_entry *entry;
2831 struct rocker_neigh_tbl_entry *found;
2832 unsigned long lock_flags;
2833 __be16 eth_type = htons(ETH_P_IP);
2834 enum rocker_of_dpa_table_id goto_tbl =
2835 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2836 u32 group_id;
2837 u32 priority = 0;
2838 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2839 bool updating;
2840 bool removing;
2841 int err = 0;
2842
2843 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2844 if (!entry)
2845 return -ENOMEM;
2846
2847 spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2848
2849 found = rocker_neigh_tbl_find(rocker, ip_addr);
2850
2851 updating = found && adding;
2852 removing = found && !adding;
2853 adding = !found && adding;
2854
2855 if (adding) {
2856 entry->ip_addr = ip_addr;
2857 entry->dev = rocker_port->dev;
2858 ether_addr_copy(entry->eth_dst, eth_dst);
2859 entry->ttl_check = true;
2860 _rocker_neigh_add(rocker, entry);
2861 } else if (removing) {
2862 memcpy(entry, found, sizeof(*entry));
2863 _rocker_neigh_del(rocker, found);
2864 } else if (updating) {
2865 _rocker_neigh_update(rocker, found, eth_dst, true);
2866 memcpy(entry, found, sizeof(*entry));
2867 } else {
2868 err = -ENOENT;
2869 }
2870
2871 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2872
2873 if (err)
2874 goto err_out;
2875
2876 /* For each active neighbor, we have an L3 unicast group and
2877 * a /32 route to the neighbor, which uses the L3 unicast
2878 * group. The L3 unicast group can also be referred to by
2879 * other routes' nexthops.
2880 */
2881
2882 err = rocker_group_l3_unicast(rocker_port, flags,
2883 entry->index,
2884 rocker_port->dev->dev_addr,
2885 entry->eth_dst,
2886 rocker_port->internal_vlan_id,
2887 entry->ttl_check,
2888 rocker_port->pport);
2889 if (err) {
2890 netdev_err(rocker_port->dev,
2891 "Error (%d) L3 unicast group index %d\n",
2892 err, entry->index);
2893 goto err_out;
2894 }
2895
2896 if (adding || removing) {
2897 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
2898 err = rocker_flow_tbl_ucast4_routing(rocker_port,
2899 eth_type, ip_addr,
2900 inet_make_mask(32),
2901 priority, goto_tbl,
2902 group_id, flags);
2903
2904 if (err)
2905 netdev_err(rocker_port->dev,
2906 "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
2907 err, &entry->ip_addr, group_id);
2908 }
2909
2910 err_out:
2911 if (!adding)
2912 kfree(entry);
2913
2914 return err;
2915 }
2916
rocker_port_ipv4_resolve(struct rocker_port * rocker_port,__be32 ip_addr)2917 static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
2918 __be32 ip_addr)
2919 {
2920 struct net_device *dev = rocker_port->dev;
2921 struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
2922 int err = 0;
2923
2924 if (!n) {
2925 n = neigh_create(&arp_tbl, &ip_addr, dev);
2926 if (IS_ERR(n))
2927 return IS_ERR(n);
2928 }
2929
2930 /* If the neigh is already resolved, then go ahead and
2931 * install the entry, otherwise start the ARP process to
2932 * resolve the neigh.
2933 */
2934
2935 if (n->nud_state & NUD_VALID)
2936 err = rocker_port_ipv4_neigh(rocker_port, 0, ip_addr, n->ha);
2937 else
2938 neigh_event_send(n, NULL);
2939
2940 neigh_release(n);
2941 return err;
2942 }
2943
rocker_port_ipv4_nh(struct rocker_port * rocker_port,int flags,__be32 ip_addr,u32 * index)2944 static int rocker_port_ipv4_nh(struct rocker_port *rocker_port, int flags,
2945 __be32 ip_addr, u32 *index)
2946 {
2947 struct rocker *rocker = rocker_port->rocker;
2948 struct rocker_neigh_tbl_entry *entry;
2949 struct rocker_neigh_tbl_entry *found;
2950 unsigned long lock_flags;
2951 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2952 bool updating;
2953 bool removing;
2954 bool resolved = true;
2955 int err = 0;
2956
2957 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2958 if (!entry)
2959 return -ENOMEM;
2960
2961 spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2962
2963 found = rocker_neigh_tbl_find(rocker, ip_addr);
2964 if (found)
2965 *index = found->index;
2966
2967 updating = found && adding;
2968 removing = found && !adding;
2969 adding = !found && adding;
2970
2971 if (adding) {
2972 entry->ip_addr = ip_addr;
2973 entry->dev = rocker_port->dev;
2974 _rocker_neigh_add(rocker, entry);
2975 *index = entry->index;
2976 resolved = false;
2977 } else if (removing) {
2978 _rocker_neigh_del(rocker, found);
2979 } else if (updating) {
2980 _rocker_neigh_update(rocker, found, NULL, false);
2981 resolved = !is_zero_ether_addr(found->eth_dst);
2982 } else {
2983 err = -ENOENT;
2984 }
2985
2986 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2987
2988 if (!adding)
2989 kfree(entry);
2990
2991 if (err)
2992 return err;
2993
2994 /* Resolved means neigh ip_addr is resolved to neigh mac. */
2995
2996 if (!resolved)
2997 err = rocker_port_ipv4_resolve(rocker_port, ip_addr);
2998
2999 return err;
3000 }
3001
rocker_port_vlan_flood_group(struct rocker_port * rocker_port,int flags,__be16 vlan_id)3002 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
3003 int flags, __be16 vlan_id)
3004 {
3005 struct rocker_port *p;
3006 struct rocker *rocker = rocker_port->rocker;
3007 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3008 u32 *group_ids;
3009 u8 group_count = 0;
3010 int err = 0;
3011 int i;
3012
3013 group_ids = kcalloc(rocker->port_count, sizeof(u32),
3014 rocker_op_flags_gfp(flags));
3015 if (!group_ids)
3016 return -ENOMEM;
3017
3018 /* Adjust the flood group for this VLAN. The flood group
3019 * references an L2 interface group for each port in this
3020 * VLAN.
3021 */
3022
3023 for (i = 0; i < rocker->port_count; i++) {
3024 p = rocker->ports[i];
3025 if (!rocker_port_is_bridged(p))
3026 continue;
3027 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
3028 group_ids[group_count++] =
3029 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
3030 }
3031 }
3032
3033 /* If there are no bridged ports in this VLAN, we're done */
3034 if (group_count == 0)
3035 goto no_ports_in_vlan;
3036
3037 err = rocker_group_l2_flood(rocker_port, flags, vlan_id,
3038 group_count, group_ids,
3039 group_id);
3040 if (err)
3041 netdev_err(rocker_port->dev,
3042 "Error (%d) port VLAN l2 flood group\n", err);
3043
3044 no_ports_in_vlan:
3045 kfree(group_ids);
3046 return err;
3047 }
3048
rocker_port_vlan_l2_groups(struct rocker_port * rocker_port,int flags,__be16 vlan_id,bool pop_vlan)3049 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
3050 int flags, __be16 vlan_id,
3051 bool pop_vlan)
3052 {
3053 struct rocker *rocker = rocker_port->rocker;
3054 struct rocker_port *p;
3055 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3056 u32 out_pport;
3057 int ref = 0;
3058 int err;
3059 int i;
3060
3061 /* An L2 interface group for this port in this VLAN, but
3062 * only when port STP state is LEARNING|FORWARDING.
3063 */
3064
3065 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3066 rocker_port->stp_state == BR_STATE_FORWARDING) {
3067 out_pport = rocker_port->pport;
3068 err = rocker_group_l2_interface(rocker_port, flags,
3069 vlan_id, out_pport,
3070 pop_vlan);
3071 if (err) {
3072 netdev_err(rocker_port->dev,
3073 "Error (%d) port VLAN l2 group for pport %d\n",
3074 err, out_pport);
3075 return err;
3076 }
3077 }
3078
3079 /* An L2 interface group for this VLAN to CPU port.
3080 * Add when first port joins this VLAN and destroy when
3081 * last port leaves this VLAN.
3082 */
3083
3084 for (i = 0; i < rocker->port_count; i++) {
3085 p = rocker->ports[i];
3086 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
3087 ref++;
3088 }
3089
3090 if ((!adding || ref != 1) && (adding || ref != 0))
3091 return 0;
3092
3093 out_pport = 0;
3094 err = rocker_group_l2_interface(rocker_port, flags,
3095 vlan_id, out_pport,
3096 pop_vlan);
3097 if (err) {
3098 netdev_err(rocker_port->dev,
3099 "Error (%d) port VLAN l2 group for CPU port\n", err);
3100 return err;
3101 }
3102
3103 return 0;
3104 }
3105
3106 static struct rocker_ctrl {
3107 const u8 *eth_dst;
3108 const u8 *eth_dst_mask;
3109 __be16 eth_type;
3110 bool acl;
3111 bool bridge;
3112 bool term;
3113 bool copy_to_cpu;
3114 } rocker_ctrls[] = {
3115 [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3116 /* pass link local multicast pkts up to CPU for filtering */
3117 .eth_dst = ll_mac,
3118 .eth_dst_mask = ll_mask,
3119 .acl = true,
3120 },
3121 [ROCKER_CTRL_LOCAL_ARP] = {
3122 /* pass local ARP pkts up to CPU */
3123 .eth_dst = zero_mac,
3124 .eth_dst_mask = zero_mac,
3125 .eth_type = htons(ETH_P_ARP),
3126 .acl = true,
3127 },
3128 [ROCKER_CTRL_IPV4_MCAST] = {
3129 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3130 .eth_dst = ipv4_mcast,
3131 .eth_dst_mask = ipv4_mask,
3132 .eth_type = htons(ETH_P_IP),
3133 .term = true,
3134 .copy_to_cpu = true,
3135 },
3136 [ROCKER_CTRL_IPV6_MCAST] = {
3137 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3138 .eth_dst = ipv6_mcast,
3139 .eth_dst_mask = ipv6_mask,
3140 .eth_type = htons(ETH_P_IPV6),
3141 .term = true,
3142 .copy_to_cpu = true,
3143 },
3144 [ROCKER_CTRL_DFLT_BRIDGING] = {
3145 /* flood any pkts on vlan */
3146 .bridge = true,
3147 .copy_to_cpu = true,
3148 },
3149 };
3150
rocker_port_ctrl_vlan_acl(struct rocker_port * rocker_port,int flags,struct rocker_ctrl * ctrl,__be16 vlan_id)3151 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3152 int flags, struct rocker_ctrl *ctrl,
3153 __be16 vlan_id)
3154 {
3155 u32 in_pport = rocker_port->pport;
3156 u32 in_pport_mask = 0xffffffff;
3157 u32 out_pport = 0;
3158 u8 *eth_src = NULL;
3159 u8 *eth_src_mask = NULL;
3160 __be16 vlan_id_mask = htons(0xffff);
3161 u8 ip_proto = 0;
3162 u8 ip_proto_mask = 0;
3163 u8 ip_tos = 0;
3164 u8 ip_tos_mask = 0;
3165 u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3166 int err;
3167
3168 err = rocker_flow_tbl_acl(rocker_port, flags,
3169 in_pport, in_pport_mask,
3170 eth_src, eth_src_mask,
3171 ctrl->eth_dst, ctrl->eth_dst_mask,
3172 ctrl->eth_type,
3173 vlan_id, vlan_id_mask,
3174 ip_proto, ip_proto_mask,
3175 ip_tos, ip_tos_mask,
3176 group_id);
3177
3178 if (err)
3179 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3180
3181 return err;
3182 }
3183
rocker_port_ctrl_vlan_bridge(struct rocker_port * rocker_port,int flags,struct rocker_ctrl * ctrl,__be16 vlan_id)3184 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3185 int flags, struct rocker_ctrl *ctrl,
3186 __be16 vlan_id)
3187 {
3188 enum rocker_of_dpa_table_id goto_tbl =
3189 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3190 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3191 u32 tunnel_id = 0;
3192 int err;
3193
3194 if (!rocker_port_is_bridged(rocker_port))
3195 return 0;
3196
3197 err = rocker_flow_tbl_bridge(rocker_port, flags,
3198 ctrl->eth_dst, ctrl->eth_dst_mask,
3199 vlan_id, tunnel_id,
3200 goto_tbl, group_id, ctrl->copy_to_cpu);
3201
3202 if (err)
3203 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3204
3205 return err;
3206 }
3207
rocker_port_ctrl_vlan_term(struct rocker_port * rocker_port,int flags,struct rocker_ctrl * ctrl,__be16 vlan_id)3208 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3209 int flags, struct rocker_ctrl *ctrl,
3210 __be16 vlan_id)
3211 {
3212 u32 in_pport_mask = 0xffffffff;
3213 __be16 vlan_id_mask = htons(0xffff);
3214 int err;
3215
3216 if (ntohs(vlan_id) == 0)
3217 vlan_id = rocker_port->internal_vlan_id;
3218
3219 err = rocker_flow_tbl_term_mac(rocker_port,
3220 rocker_port->pport, in_pport_mask,
3221 ctrl->eth_type, ctrl->eth_dst,
3222 ctrl->eth_dst_mask, vlan_id,
3223 vlan_id_mask, ctrl->copy_to_cpu,
3224 flags);
3225
3226 if (err)
3227 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3228
3229 return err;
3230 }
3231
rocker_port_ctrl_vlan(struct rocker_port * rocker_port,int flags,struct rocker_ctrl * ctrl,__be16 vlan_id)3232 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, int flags,
3233 struct rocker_ctrl *ctrl, __be16 vlan_id)
3234 {
3235 if (ctrl->acl)
3236 return rocker_port_ctrl_vlan_acl(rocker_port, flags,
3237 ctrl, vlan_id);
3238 if (ctrl->bridge)
3239 return rocker_port_ctrl_vlan_bridge(rocker_port, flags,
3240 ctrl, vlan_id);
3241
3242 if (ctrl->term)
3243 return rocker_port_ctrl_vlan_term(rocker_port, flags,
3244 ctrl, vlan_id);
3245
3246 return -EOPNOTSUPP;
3247 }
3248
rocker_port_ctrl_vlan_add(struct rocker_port * rocker_port,int flags,__be16 vlan_id)3249 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3250 int flags, __be16 vlan_id)
3251 {
3252 int err = 0;
3253 int i;
3254
3255 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3256 if (rocker_port->ctrls[i]) {
3257 err = rocker_port_ctrl_vlan(rocker_port, flags,
3258 &rocker_ctrls[i], vlan_id);
3259 if (err)
3260 return err;
3261 }
3262 }
3263
3264 return err;
3265 }
3266
rocker_port_ctrl(struct rocker_port * rocker_port,int flags,struct rocker_ctrl * ctrl)3267 static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags,
3268 struct rocker_ctrl *ctrl)
3269 {
3270 u16 vid;
3271 int err = 0;
3272
3273 for (vid = 1; vid < VLAN_N_VID; vid++) {
3274 if (!test_bit(vid, rocker_port->vlan_bitmap))
3275 continue;
3276 err = rocker_port_ctrl_vlan(rocker_port, flags,
3277 ctrl, htons(vid));
3278 if (err)
3279 break;
3280 }
3281
3282 return err;
3283 }
3284
rocker_port_vlan(struct rocker_port * rocker_port,int flags,u16 vid)3285 static int rocker_port_vlan(struct rocker_port *rocker_port, int flags,
3286 u16 vid)
3287 {
3288 enum rocker_of_dpa_table_id goto_tbl =
3289 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
3290 u32 in_pport = rocker_port->pport;
3291 __be16 vlan_id = htons(vid);
3292 __be16 vlan_id_mask = htons(0xffff);
3293 __be16 internal_vlan_id;
3294 bool untagged;
3295 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3296 int err;
3297
3298 internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3299
3300 if (adding && test_and_set_bit(ntohs(internal_vlan_id),
3301 rocker_port->vlan_bitmap))
3302 return 0; /* already added */
3303 else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id),
3304 rocker_port->vlan_bitmap))
3305 return 0; /* already removed */
3306
3307 if (adding) {
3308 err = rocker_port_ctrl_vlan_add(rocker_port, flags,
3309 internal_vlan_id);
3310 if (err) {
3311 netdev_err(rocker_port->dev,
3312 "Error (%d) port ctrl vlan add\n", err);
3313 return err;
3314 }
3315 }
3316
3317 err = rocker_port_vlan_l2_groups(rocker_port, flags,
3318 internal_vlan_id, untagged);
3319 if (err) {
3320 netdev_err(rocker_port->dev,
3321 "Error (%d) port VLAN l2 groups\n", err);
3322 return err;
3323 }
3324
3325 err = rocker_port_vlan_flood_group(rocker_port, flags,
3326 internal_vlan_id);
3327 if (err) {
3328 netdev_err(rocker_port->dev,
3329 "Error (%d) port VLAN l2 flood group\n", err);
3330 return err;
3331 }
3332
3333 err = rocker_flow_tbl_vlan(rocker_port, flags,
3334 in_pport, vlan_id, vlan_id_mask,
3335 goto_tbl, untagged, internal_vlan_id);
3336 if (err)
3337 netdev_err(rocker_port->dev,
3338 "Error (%d) port VLAN table\n", err);
3339
3340 return err;
3341 }
3342
rocker_port_ig_tbl(struct rocker_port * rocker_port,int flags)3343 static int rocker_port_ig_tbl(struct rocker_port *rocker_port, int flags)
3344 {
3345 enum rocker_of_dpa_table_id goto_tbl;
3346 u32 in_pport;
3347 u32 in_pport_mask;
3348 int err;
3349
3350 /* Normal Ethernet Frames. Matches pkts from any local physical
3351 * ports. Goto VLAN tbl.
3352 */
3353
3354 in_pport = 0;
3355 in_pport_mask = 0xffff0000;
3356 goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3357
3358 err = rocker_flow_tbl_ig_port(rocker_port, flags,
3359 in_pport, in_pport_mask,
3360 goto_tbl);
3361 if (err)
3362 netdev_err(rocker_port->dev,
3363 "Error (%d) ingress port table entry\n", err);
3364
3365 return err;
3366 }
3367
3368 struct rocker_fdb_learn_work {
3369 struct work_struct work;
3370 struct net_device *dev;
3371 int flags;
3372 u8 addr[ETH_ALEN];
3373 u16 vid;
3374 };
3375
rocker_port_fdb_learn_work(struct work_struct * work)3376 static void rocker_port_fdb_learn_work(struct work_struct *work)
3377 {
3378 struct rocker_fdb_learn_work *lw =
3379 container_of(work, struct rocker_fdb_learn_work, work);
3380 bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3381 bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3382 struct netdev_switch_notifier_fdb_info info;
3383
3384 info.addr = lw->addr;
3385 info.vid = lw->vid;
3386
3387 rtnl_lock();
3388 if (learned && removing)
3389 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL,
3390 lw->dev, &info.info);
3391 else if (learned && !removing)
3392 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_ADD,
3393 lw->dev, &info.info);
3394 rtnl_unlock();
3395
3396 kfree(work);
3397 }
3398
rocker_port_fdb_learn(struct rocker_port * rocker_port,int flags,const u8 * addr,__be16 vlan_id)3399 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3400 int flags, const u8 *addr, __be16 vlan_id)
3401 {
3402 struct rocker_fdb_learn_work *lw;
3403 enum rocker_of_dpa_table_id goto_tbl =
3404 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3405 u32 out_pport = rocker_port->pport;
3406 u32 tunnel_id = 0;
3407 u32 group_id = ROCKER_GROUP_NONE;
3408 bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3409 bool copy_to_cpu = false;
3410 int err;
3411
3412 if (rocker_port_is_bridged(rocker_port))
3413 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
3414
3415 if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3416 err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL,
3417 vlan_id, tunnel_id, goto_tbl,
3418 group_id, copy_to_cpu);
3419 if (err)
3420 return err;
3421 }
3422
3423 if (!syncing)
3424 return 0;
3425
3426 if (!rocker_port_is_bridged(rocker_port))
3427 return 0;
3428
3429 lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags));
3430 if (!lw)
3431 return -ENOMEM;
3432
3433 INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3434
3435 lw->dev = rocker_port->dev;
3436 lw->flags = flags;
3437 ether_addr_copy(lw->addr, addr);
3438 lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3439
3440 schedule_work(&lw->work);
3441
3442 return 0;
3443 }
3444
3445 static struct rocker_fdb_tbl_entry *
rocker_fdb_tbl_find(struct rocker * rocker,struct rocker_fdb_tbl_entry * match)3446 rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3447 {
3448 struct rocker_fdb_tbl_entry *found;
3449
3450 hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3451 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3452 return found;
3453
3454 return NULL;
3455 }
3456
rocker_port_fdb(struct rocker_port * rocker_port,const unsigned char * addr,__be16 vlan_id,int flags)3457 static int rocker_port_fdb(struct rocker_port *rocker_port,
3458 const unsigned char *addr,
3459 __be16 vlan_id, int flags)
3460 {
3461 struct rocker *rocker = rocker_port->rocker;
3462 struct rocker_fdb_tbl_entry *fdb;
3463 struct rocker_fdb_tbl_entry *found;
3464 bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3465 unsigned long lock_flags;
3466
3467 fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags));
3468 if (!fdb)
3469 return -ENOMEM;
3470
3471 fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3472 fdb->key.pport = rocker_port->pport;
3473 ether_addr_copy(fdb->key.addr, addr);
3474 fdb->key.vlan_id = vlan_id;
3475 fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3476
3477 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3478
3479 found = rocker_fdb_tbl_find(rocker, fdb);
3480
3481 if (removing && found) {
3482 kfree(fdb);
3483 hash_del(&found->entry);
3484 } else if (!removing && !found) {
3485 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3486 }
3487
3488 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3489
3490 /* Check if adding and already exists, or removing and can't find */
3491 if (!found != !removing) {
3492 kfree(fdb);
3493 if (!found && removing)
3494 return 0;
3495 /* Refreshing existing to update aging timers */
3496 flags |= ROCKER_OP_FLAG_REFRESH;
3497 }
3498
3499 return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id);
3500 }
3501
rocker_port_fdb_flush(struct rocker_port * rocker_port)3502 static int rocker_port_fdb_flush(struct rocker_port *rocker_port)
3503 {
3504 struct rocker *rocker = rocker_port->rocker;
3505 struct rocker_fdb_tbl_entry *found;
3506 unsigned long lock_flags;
3507 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3508 struct hlist_node *tmp;
3509 int bkt;
3510 int err = 0;
3511
3512 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3513 rocker_port->stp_state == BR_STATE_FORWARDING)
3514 return 0;
3515
3516 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3517
3518 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3519 if (found->key.pport != rocker_port->pport)
3520 continue;
3521 if (!found->learned)
3522 continue;
3523 err = rocker_port_fdb_learn(rocker_port, flags,
3524 found->key.addr,
3525 found->key.vlan_id);
3526 if (err)
3527 goto err_out;
3528 hash_del(&found->entry);
3529 }
3530
3531 err_out:
3532 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3533
3534 return err;
3535 }
3536
rocker_port_router_mac(struct rocker_port * rocker_port,int flags,__be16 vlan_id)3537 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3538 int flags, __be16 vlan_id)
3539 {
3540 u32 in_pport_mask = 0xffffffff;
3541 __be16 eth_type;
3542 const u8 *dst_mac_mask = ff_mac;
3543 __be16 vlan_id_mask = htons(0xffff);
3544 bool copy_to_cpu = false;
3545 int err;
3546
3547 if (ntohs(vlan_id) == 0)
3548 vlan_id = rocker_port->internal_vlan_id;
3549
3550 eth_type = htons(ETH_P_IP);
3551 err = rocker_flow_tbl_term_mac(rocker_port,
3552 rocker_port->pport, in_pport_mask,
3553 eth_type, rocker_port->dev->dev_addr,
3554 dst_mac_mask, vlan_id, vlan_id_mask,
3555 copy_to_cpu, flags);
3556 if (err)
3557 return err;
3558
3559 eth_type = htons(ETH_P_IPV6);
3560 err = rocker_flow_tbl_term_mac(rocker_port,
3561 rocker_port->pport, in_pport_mask,
3562 eth_type, rocker_port->dev->dev_addr,
3563 dst_mac_mask, vlan_id, vlan_id_mask,
3564 copy_to_cpu, flags);
3565
3566 return err;
3567 }
3568
rocker_port_fwding(struct rocker_port * rocker_port)3569 static int rocker_port_fwding(struct rocker_port *rocker_port)
3570 {
3571 bool pop_vlan;
3572 u32 out_pport;
3573 __be16 vlan_id;
3574 u16 vid;
3575 int flags = ROCKER_OP_FLAG_NOWAIT;
3576 int err;
3577
3578 /* Port will be forwarding-enabled if its STP state is LEARNING
3579 * or FORWARDING. Traffic from CPU can still egress, regardless of
3580 * port STP state. Use L2 interface group on port VLANs as a way
3581 * to toggle port forwarding: if forwarding is disabled, L2
3582 * interface group will not exist.
3583 */
3584
3585 if (rocker_port->stp_state != BR_STATE_LEARNING &&
3586 rocker_port->stp_state != BR_STATE_FORWARDING)
3587 flags |= ROCKER_OP_FLAG_REMOVE;
3588
3589 out_pport = rocker_port->pport;
3590 for (vid = 1; vid < VLAN_N_VID; vid++) {
3591 if (!test_bit(vid, rocker_port->vlan_bitmap))
3592 continue;
3593 vlan_id = htons(vid);
3594 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3595 err = rocker_group_l2_interface(rocker_port, flags,
3596 vlan_id, out_pport,
3597 pop_vlan);
3598 if (err) {
3599 netdev_err(rocker_port->dev,
3600 "Error (%d) port VLAN l2 group for pport %d\n",
3601 err, out_pport);
3602 return err;
3603 }
3604 }
3605
3606 return 0;
3607 }
3608
rocker_port_stp_update(struct rocker_port * rocker_port,u8 state)3609 static int rocker_port_stp_update(struct rocker_port *rocker_port, u8 state)
3610 {
3611 bool want[ROCKER_CTRL_MAX] = { 0, };
3612 int flags;
3613 int err;
3614 int i;
3615
3616 if (rocker_port->stp_state == state)
3617 return 0;
3618
3619 rocker_port->stp_state = state;
3620
3621 switch (state) {
3622 case BR_STATE_DISABLED:
3623 /* port is completely disabled */
3624 break;
3625 case BR_STATE_LISTENING:
3626 case BR_STATE_BLOCKING:
3627 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3628 break;
3629 case BR_STATE_LEARNING:
3630 case BR_STATE_FORWARDING:
3631 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3632 want[ROCKER_CTRL_IPV4_MCAST] = true;
3633 want[ROCKER_CTRL_IPV6_MCAST] = true;
3634 if (rocker_port_is_bridged(rocker_port))
3635 want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3636 else
3637 want[ROCKER_CTRL_LOCAL_ARP] = true;
3638 break;
3639 }
3640
3641 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3642 if (want[i] != rocker_port->ctrls[i]) {
3643 flags = ROCKER_OP_FLAG_NOWAIT |
3644 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3645 err = rocker_port_ctrl(rocker_port, flags,
3646 &rocker_ctrls[i]);
3647 if (err)
3648 return err;
3649 rocker_port->ctrls[i] = want[i];
3650 }
3651 }
3652
3653 err = rocker_port_fdb_flush(rocker_port);
3654 if (err)
3655 return err;
3656
3657 return rocker_port_fwding(rocker_port);
3658 }
3659
rocker_port_fwd_enable(struct rocker_port * rocker_port)3660 static int rocker_port_fwd_enable(struct rocker_port *rocker_port)
3661 {
3662 if (rocker_port_is_bridged(rocker_port))
3663 /* bridge STP will enable port */
3664 return 0;
3665
3666 /* port is not bridged, so simulate going to FORWARDING state */
3667 return rocker_port_stp_update(rocker_port, BR_STATE_FORWARDING);
3668 }
3669
rocker_port_fwd_disable(struct rocker_port * rocker_port)3670 static int rocker_port_fwd_disable(struct rocker_port *rocker_port)
3671 {
3672 if (rocker_port_is_bridged(rocker_port))
3673 /* bridge STP will disable port */
3674 return 0;
3675
3676 /* port is not bridged, so simulate going to DISABLED state */
3677 return rocker_port_stp_update(rocker_port, BR_STATE_DISABLED);
3678 }
3679
3680 static struct rocker_internal_vlan_tbl_entry *
rocker_internal_vlan_tbl_find(struct rocker * rocker,int ifindex)3681 rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3682 {
3683 struct rocker_internal_vlan_tbl_entry *found;
3684
3685 hash_for_each_possible(rocker->internal_vlan_tbl, found,
3686 entry, ifindex) {
3687 if (found->ifindex == ifindex)
3688 return found;
3689 }
3690
3691 return NULL;
3692 }
3693
rocker_port_internal_vlan_id_get(struct rocker_port * rocker_port,int ifindex)3694 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3695 int ifindex)
3696 {
3697 struct rocker *rocker = rocker_port->rocker;
3698 struct rocker_internal_vlan_tbl_entry *entry;
3699 struct rocker_internal_vlan_tbl_entry *found;
3700 unsigned long lock_flags;
3701 int i;
3702
3703 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3704 if (!entry)
3705 return 0;
3706
3707 entry->ifindex = ifindex;
3708
3709 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3710
3711 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3712 if (found) {
3713 kfree(entry);
3714 goto found;
3715 }
3716
3717 found = entry;
3718 hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3719
3720 for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3721 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3722 continue;
3723 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3724 goto found;
3725 }
3726
3727 netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3728
3729 found:
3730 found->ref_count++;
3731 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3732
3733 return found->vlan_id;
3734 }
3735
rocker_port_internal_vlan_id_put(struct rocker_port * rocker_port,int ifindex)3736 static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3737 int ifindex)
3738 {
3739 struct rocker *rocker = rocker_port->rocker;
3740 struct rocker_internal_vlan_tbl_entry *found;
3741 unsigned long lock_flags;
3742 unsigned long bit;
3743
3744 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3745
3746 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3747 if (!found) {
3748 netdev_err(rocker_port->dev,
3749 "ifindex (%d) not found in internal VLAN tbl\n",
3750 ifindex);
3751 goto not_found;
3752 }
3753
3754 if (--found->ref_count <= 0) {
3755 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3756 clear_bit(bit, rocker->internal_vlan_bitmap);
3757 hash_del(&found->entry);
3758 kfree(found);
3759 }
3760
3761 not_found:
3762 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3763 }
3764
rocker_port_fib_ipv4(struct rocker_port * rocker_port,__be32 dst,int dst_len,struct fib_info * fi,u32 tb_id,int flags)3765 static int rocker_port_fib_ipv4(struct rocker_port *rocker_port, __be32 dst,
3766 int dst_len, struct fib_info *fi, u32 tb_id,
3767 int flags)
3768 {
3769 struct fib_nh *nh;
3770 __be16 eth_type = htons(ETH_P_IP);
3771 __be32 dst_mask = inet_make_mask(dst_len);
3772 __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3773 u32 priority = fi->fib_priority;
3774 enum rocker_of_dpa_table_id goto_tbl =
3775 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3776 u32 group_id;
3777 bool nh_on_port;
3778 bool has_gw;
3779 u32 index;
3780 int err;
3781
3782 /* XXX support ECMP */
3783
3784 nh = fi->fib_nh;
3785 nh_on_port = (fi->fib_dev == rocker_port->dev);
3786 has_gw = !!nh->nh_gw;
3787
3788 if (has_gw && nh_on_port) {
3789 err = rocker_port_ipv4_nh(rocker_port, flags,
3790 nh->nh_gw, &index);
3791 if (err)
3792 return err;
3793
3794 group_id = ROCKER_GROUP_L3_UNICAST(index);
3795 } else {
3796 /* Send to CPU for processing */
3797 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3798 }
3799
3800 err = rocker_flow_tbl_ucast4_routing(rocker_port, eth_type, dst,
3801 dst_mask, priority, goto_tbl,
3802 group_id, flags);
3803 if (err)
3804 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3805 err, &dst);
3806
3807 return err;
3808 }
3809
3810 /*****************
3811 * Net device ops
3812 *****************/
3813
rocker_port_open(struct net_device * dev)3814 static int rocker_port_open(struct net_device *dev)
3815 {
3816 struct rocker_port *rocker_port = netdev_priv(dev);
3817 int err;
3818
3819 err = rocker_port_dma_rings_init(rocker_port);
3820 if (err)
3821 return err;
3822
3823 err = request_irq(rocker_msix_tx_vector(rocker_port),
3824 rocker_tx_irq_handler, 0,
3825 rocker_driver_name, rocker_port);
3826 if (err) {
3827 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3828 goto err_request_tx_irq;
3829 }
3830
3831 err = request_irq(rocker_msix_rx_vector(rocker_port),
3832 rocker_rx_irq_handler, 0,
3833 rocker_driver_name, rocker_port);
3834 if (err) {
3835 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3836 goto err_request_rx_irq;
3837 }
3838
3839 err = rocker_port_fwd_enable(rocker_port);
3840 if (err)
3841 goto err_fwd_enable;
3842
3843 napi_enable(&rocker_port->napi_tx);
3844 napi_enable(&rocker_port->napi_rx);
3845 rocker_port_set_enable(rocker_port, true);
3846 netif_start_queue(dev);
3847 return 0;
3848
3849 err_fwd_enable:
3850 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3851 err_request_rx_irq:
3852 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3853 err_request_tx_irq:
3854 rocker_port_dma_rings_fini(rocker_port);
3855 return err;
3856 }
3857
rocker_port_stop(struct net_device * dev)3858 static int rocker_port_stop(struct net_device *dev)
3859 {
3860 struct rocker_port *rocker_port = netdev_priv(dev);
3861
3862 netif_stop_queue(dev);
3863 rocker_port_set_enable(rocker_port, false);
3864 napi_disable(&rocker_port->napi_rx);
3865 napi_disable(&rocker_port->napi_tx);
3866 rocker_port_fwd_disable(rocker_port);
3867 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3868 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3869 rocker_port_dma_rings_fini(rocker_port);
3870
3871 return 0;
3872 }
3873
rocker_tx_desc_frags_unmap(struct rocker_port * rocker_port,struct rocker_desc_info * desc_info)3874 static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
3875 struct rocker_desc_info *desc_info)
3876 {
3877 struct rocker *rocker = rocker_port->rocker;
3878 struct pci_dev *pdev = rocker->pdev;
3879 struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
3880 struct rocker_tlv *attr;
3881 int rem;
3882
3883 rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
3884 if (!attrs[ROCKER_TLV_TX_FRAGS])
3885 return;
3886 rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
3887 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
3888 dma_addr_t dma_handle;
3889 size_t len;
3890
3891 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
3892 continue;
3893 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
3894 attr);
3895 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
3896 !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
3897 continue;
3898 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
3899 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
3900 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
3901 }
3902 }
3903
rocker_tx_desc_frag_map_put(struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,char * buf,size_t buf_len)3904 static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
3905 struct rocker_desc_info *desc_info,
3906 char *buf, size_t buf_len)
3907 {
3908 struct rocker *rocker = rocker_port->rocker;
3909 struct pci_dev *pdev = rocker->pdev;
3910 dma_addr_t dma_handle;
3911 struct rocker_tlv *frag;
3912
3913 dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
3914 if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
3915 if (net_ratelimit())
3916 netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
3917 return -EIO;
3918 }
3919 frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
3920 if (!frag)
3921 goto unmap_frag;
3922 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
3923 dma_handle))
3924 goto nest_cancel;
3925 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
3926 buf_len))
3927 goto nest_cancel;
3928 rocker_tlv_nest_end(desc_info, frag);
3929 return 0;
3930
3931 nest_cancel:
3932 rocker_tlv_nest_cancel(desc_info, frag);
3933 unmap_frag:
3934 pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
3935 return -EMSGSIZE;
3936 }
3937
rocker_port_xmit(struct sk_buff * skb,struct net_device * dev)3938 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
3939 {
3940 struct rocker_port *rocker_port = netdev_priv(dev);
3941 struct rocker *rocker = rocker_port->rocker;
3942 struct rocker_desc_info *desc_info;
3943 struct rocker_tlv *frags;
3944 int i;
3945 int err;
3946
3947 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3948 if (unlikely(!desc_info)) {
3949 if (net_ratelimit())
3950 netdev_err(dev, "tx ring full when queue awake\n");
3951 return NETDEV_TX_BUSY;
3952 }
3953
3954 rocker_desc_cookie_ptr_set(desc_info, skb);
3955
3956 frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
3957 if (!frags)
3958 goto out;
3959 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3960 skb->data, skb_headlen(skb));
3961 if (err)
3962 goto nest_cancel;
3963 if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
3964 goto nest_cancel;
3965
3966 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3967 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3968
3969 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3970 skb_frag_address(frag),
3971 skb_frag_size(frag));
3972 if (err)
3973 goto unmap_frags;
3974 }
3975 rocker_tlv_nest_end(desc_info, frags);
3976
3977 rocker_desc_gen_clear(desc_info);
3978 rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
3979
3980 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3981 if (!desc_info)
3982 netif_stop_queue(dev);
3983
3984 return NETDEV_TX_OK;
3985
3986 unmap_frags:
3987 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3988 nest_cancel:
3989 rocker_tlv_nest_cancel(desc_info, frags);
3990 out:
3991 dev_kfree_skb(skb);
3992 dev->stats.tx_dropped++;
3993
3994 return NETDEV_TX_OK;
3995 }
3996
rocker_port_set_mac_address(struct net_device * dev,void * p)3997 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
3998 {
3999 struct sockaddr *addr = p;
4000 struct rocker_port *rocker_port = netdev_priv(dev);
4001 int err;
4002
4003 if (!is_valid_ether_addr(addr->sa_data))
4004 return -EADDRNOTAVAIL;
4005
4006 err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
4007 if (err)
4008 return err;
4009 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4010 return 0;
4011 }
4012
rocker_port_vlan_rx_add_vid(struct net_device * dev,__be16 proto,u16 vid)4013 static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
4014 __be16 proto, u16 vid)
4015 {
4016 struct rocker_port *rocker_port = netdev_priv(dev);
4017 int err;
4018
4019 err = rocker_port_vlan(rocker_port, 0, vid);
4020 if (err)
4021 return err;
4022
4023 return rocker_port_router_mac(rocker_port, 0, htons(vid));
4024 }
4025
rocker_port_vlan_rx_kill_vid(struct net_device * dev,__be16 proto,u16 vid)4026 static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
4027 __be16 proto, u16 vid)
4028 {
4029 struct rocker_port *rocker_port = netdev_priv(dev);
4030 int err;
4031
4032 err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE,
4033 htons(vid));
4034 if (err)
4035 return err;
4036
4037 return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid);
4038 }
4039
rocker_port_fdb_add(struct ndmsg * ndm,struct nlattr * tb[],struct net_device * dev,const unsigned char * addr,u16 vid,u16 nlm_flags)4040 static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
4041 struct net_device *dev,
4042 const unsigned char *addr, u16 vid,
4043 u16 nlm_flags)
4044 {
4045 struct rocker_port *rocker_port = netdev_priv(dev);
4046 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4047 int flags = 0;
4048
4049 if (!rocker_port_is_bridged(rocker_port))
4050 return -EINVAL;
4051
4052 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
4053 }
4054
rocker_port_fdb_del(struct ndmsg * ndm,struct nlattr * tb[],struct net_device * dev,const unsigned char * addr,u16 vid)4055 static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
4056 struct net_device *dev,
4057 const unsigned char *addr, u16 vid)
4058 {
4059 struct rocker_port *rocker_port = netdev_priv(dev);
4060 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4061 int flags = ROCKER_OP_FLAG_REMOVE;
4062
4063 if (!rocker_port_is_bridged(rocker_port))
4064 return -EINVAL;
4065
4066 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
4067 }
4068
rocker_fdb_fill_info(struct sk_buff * skb,struct rocker_port * rocker_port,const unsigned char * addr,u16 vid,u32 portid,u32 seq,int type,unsigned int flags)4069 static int rocker_fdb_fill_info(struct sk_buff *skb,
4070 struct rocker_port *rocker_port,
4071 const unsigned char *addr, u16 vid,
4072 u32 portid, u32 seq, int type,
4073 unsigned int flags)
4074 {
4075 struct nlmsghdr *nlh;
4076 struct ndmsg *ndm;
4077
4078 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
4079 if (!nlh)
4080 return -EMSGSIZE;
4081
4082 ndm = nlmsg_data(nlh);
4083 ndm->ndm_family = AF_BRIDGE;
4084 ndm->ndm_pad1 = 0;
4085 ndm->ndm_pad2 = 0;
4086 ndm->ndm_flags = NTF_SELF;
4087 ndm->ndm_type = 0;
4088 ndm->ndm_ifindex = rocker_port->dev->ifindex;
4089 ndm->ndm_state = NUD_REACHABLE;
4090
4091 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
4092 goto nla_put_failure;
4093
4094 if (vid && nla_put_u16(skb, NDA_VLAN, vid))
4095 goto nla_put_failure;
4096
4097 nlmsg_end(skb, nlh);
4098 return 0;
4099
4100 nla_put_failure:
4101 nlmsg_cancel(skb, nlh);
4102 return -EMSGSIZE;
4103 }
4104
rocker_port_fdb_dump(struct sk_buff * skb,struct netlink_callback * cb,struct net_device * dev,struct net_device * filter_dev,int idx)4105 static int rocker_port_fdb_dump(struct sk_buff *skb,
4106 struct netlink_callback *cb,
4107 struct net_device *dev,
4108 struct net_device *filter_dev,
4109 int idx)
4110 {
4111 struct rocker_port *rocker_port = netdev_priv(dev);
4112 struct rocker *rocker = rocker_port->rocker;
4113 struct rocker_fdb_tbl_entry *found;
4114 struct hlist_node *tmp;
4115 int bkt;
4116 unsigned long lock_flags;
4117 const unsigned char *addr;
4118 u16 vid;
4119 int err;
4120
4121 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4122 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4123 if (found->key.pport != rocker_port->pport)
4124 continue;
4125 if (idx < cb->args[0])
4126 goto skip;
4127 addr = found->key.addr;
4128 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
4129 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
4130 NETLINK_CB(cb->skb).portid,
4131 cb->nlh->nlmsg_seq,
4132 RTM_NEWNEIGH, NLM_F_MULTI);
4133 if (err < 0)
4134 break;
4135 skip:
4136 ++idx;
4137 }
4138 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4139 return idx;
4140 }
4141
rocker_port_bridge_setlink(struct net_device * dev,struct nlmsghdr * nlh,u16 flags)4142 static int rocker_port_bridge_setlink(struct net_device *dev,
4143 struct nlmsghdr *nlh, u16 flags)
4144 {
4145 struct rocker_port *rocker_port = netdev_priv(dev);
4146 struct nlattr *protinfo;
4147 struct nlattr *attr;
4148 int err;
4149
4150 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
4151 IFLA_PROTINFO);
4152 if (protinfo) {
4153 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING);
4154 if (attr) {
4155 if (nla_len(attr) < sizeof(u8))
4156 return -EINVAL;
4157
4158 if (nla_get_u8(attr))
4159 rocker_port->brport_flags |= BR_LEARNING;
4160 else
4161 rocker_port->brport_flags &= ~BR_LEARNING;
4162 err = rocker_port_set_learning(rocker_port);
4163 if (err)
4164 return err;
4165 }
4166 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC);
4167 if (attr) {
4168 if (nla_len(attr) < sizeof(u8))
4169 return -EINVAL;
4170
4171 if (nla_get_u8(attr))
4172 rocker_port->brport_flags |= BR_LEARNING_SYNC;
4173 else
4174 rocker_port->brport_flags &= ~BR_LEARNING_SYNC;
4175 }
4176 }
4177
4178 return 0;
4179 }
4180
rocker_port_bridge_getlink(struct sk_buff * skb,u32 pid,u32 seq,struct net_device * dev,u32 filter_mask,int nlflags)4181 static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4182 struct net_device *dev,
4183 u32 filter_mask, int nlflags)
4184 {
4185 struct rocker_port *rocker_port = netdev_priv(dev);
4186 u16 mode = BRIDGE_MODE_UNDEF;
4187 u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
4188
4189 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
4190 rocker_port->brport_flags, mask,
4191 nlflags);
4192 }
4193
rocker_port_get_phys_port_name(struct net_device * dev,char * buf,size_t len)4194 static int rocker_port_get_phys_port_name(struct net_device *dev,
4195 char *buf, size_t len)
4196 {
4197 struct rocker_port *rocker_port = netdev_priv(dev);
4198 struct port_name name = { .buf = buf, .len = len };
4199 int err;
4200
4201 err = rocker_cmd_exec(rocker_port->rocker, rocker_port,
4202 rocker_cmd_get_port_settings_prep, NULL,
4203 rocker_cmd_get_port_settings_phys_name_proc,
4204 &name, false);
4205
4206 return err ? -EOPNOTSUPP : 0;
4207 }
4208
4209 static const struct net_device_ops rocker_port_netdev_ops = {
4210 .ndo_open = rocker_port_open,
4211 .ndo_stop = rocker_port_stop,
4212 .ndo_start_xmit = rocker_port_xmit,
4213 .ndo_set_mac_address = rocker_port_set_mac_address,
4214 .ndo_vlan_rx_add_vid = rocker_port_vlan_rx_add_vid,
4215 .ndo_vlan_rx_kill_vid = rocker_port_vlan_rx_kill_vid,
4216 .ndo_fdb_add = rocker_port_fdb_add,
4217 .ndo_fdb_del = rocker_port_fdb_del,
4218 .ndo_fdb_dump = rocker_port_fdb_dump,
4219 .ndo_bridge_setlink = rocker_port_bridge_setlink,
4220 .ndo_bridge_getlink = rocker_port_bridge_getlink,
4221 .ndo_get_phys_port_name = rocker_port_get_phys_port_name,
4222 };
4223
4224 /********************
4225 * swdev interface
4226 ********************/
4227
rocker_port_swdev_parent_id_get(struct net_device * dev,struct netdev_phys_item_id * psid)4228 static int rocker_port_swdev_parent_id_get(struct net_device *dev,
4229 struct netdev_phys_item_id *psid)
4230 {
4231 struct rocker_port *rocker_port = netdev_priv(dev);
4232 struct rocker *rocker = rocker_port->rocker;
4233
4234 psid->id_len = sizeof(rocker->hw.id);
4235 memcpy(&psid->id, &rocker->hw.id, psid->id_len);
4236 return 0;
4237 }
4238
rocker_port_swdev_port_stp_update(struct net_device * dev,u8 state)4239 static int rocker_port_swdev_port_stp_update(struct net_device *dev, u8 state)
4240 {
4241 struct rocker_port *rocker_port = netdev_priv(dev);
4242
4243 return rocker_port_stp_update(rocker_port, state);
4244 }
4245
rocker_port_swdev_fib_ipv4_add(struct net_device * dev,__be32 dst,int dst_len,struct fib_info * fi,u8 tos,u8 type,u32 nlflags,u32 tb_id)4246 static int rocker_port_swdev_fib_ipv4_add(struct net_device *dev,
4247 __be32 dst, int dst_len,
4248 struct fib_info *fi,
4249 u8 tos, u8 type,
4250 u32 nlflags, u32 tb_id)
4251 {
4252 struct rocker_port *rocker_port = netdev_priv(dev);
4253 int flags = 0;
4254
4255 return rocker_port_fib_ipv4(rocker_port, dst, dst_len,
4256 fi, tb_id, flags);
4257 }
4258
rocker_port_swdev_fib_ipv4_del(struct net_device * dev,__be32 dst,int dst_len,struct fib_info * fi,u8 tos,u8 type,u32 tb_id)4259 static int rocker_port_swdev_fib_ipv4_del(struct net_device *dev,
4260 __be32 dst, int dst_len,
4261 struct fib_info *fi,
4262 u8 tos, u8 type, u32 tb_id)
4263 {
4264 struct rocker_port *rocker_port = netdev_priv(dev);
4265 int flags = ROCKER_OP_FLAG_REMOVE;
4266
4267 return rocker_port_fib_ipv4(rocker_port, dst, dst_len,
4268 fi, tb_id, flags);
4269 }
4270
4271 static const struct swdev_ops rocker_port_swdev_ops = {
4272 .swdev_parent_id_get = rocker_port_swdev_parent_id_get,
4273 .swdev_port_stp_update = rocker_port_swdev_port_stp_update,
4274 .swdev_fib_ipv4_add = rocker_port_swdev_fib_ipv4_add,
4275 .swdev_fib_ipv4_del = rocker_port_swdev_fib_ipv4_del,
4276 };
4277
4278 /********************
4279 * ethtool interface
4280 ********************/
4281
rocker_port_get_settings(struct net_device * dev,struct ethtool_cmd * ecmd)4282 static int rocker_port_get_settings(struct net_device *dev,
4283 struct ethtool_cmd *ecmd)
4284 {
4285 struct rocker_port *rocker_port = netdev_priv(dev);
4286
4287 return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4288 }
4289
rocker_port_set_settings(struct net_device * dev,struct ethtool_cmd * ecmd)4290 static int rocker_port_set_settings(struct net_device *dev,
4291 struct ethtool_cmd *ecmd)
4292 {
4293 struct rocker_port *rocker_port = netdev_priv(dev);
4294
4295 return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4296 }
4297
rocker_port_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * drvinfo)4298 static void rocker_port_get_drvinfo(struct net_device *dev,
4299 struct ethtool_drvinfo *drvinfo)
4300 {
4301 strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4302 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4303 }
4304
4305 static struct rocker_port_stats {
4306 char str[ETH_GSTRING_LEN];
4307 int type;
4308 } rocker_port_stats[] = {
4309 { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, },
4310 { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, },
4311 { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4312 { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, },
4313
4314 { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, },
4315 { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, },
4316 { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4317 { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, },
4318 };
4319
4320 #define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats)
4321
rocker_port_get_strings(struct net_device * netdev,u32 stringset,u8 * data)4322 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4323 u8 *data)
4324 {
4325 u8 *p = data;
4326 int i;
4327
4328 switch (stringset) {
4329 case ETH_SS_STATS:
4330 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4331 memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4332 p += ETH_GSTRING_LEN;
4333 }
4334 break;
4335 }
4336 }
4337
4338 static int
rocker_cmd_get_port_stats_prep(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)4339 rocker_cmd_get_port_stats_prep(struct rocker *rocker,
4340 struct rocker_port *rocker_port,
4341 struct rocker_desc_info *desc_info,
4342 void *priv)
4343 {
4344 struct rocker_tlv *cmd_stats;
4345
4346 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4347 ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4348 return -EMSGSIZE;
4349
4350 cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4351 if (!cmd_stats)
4352 return -EMSGSIZE;
4353
4354 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4355 rocker_port->pport))
4356 return -EMSGSIZE;
4357
4358 rocker_tlv_nest_end(desc_info, cmd_stats);
4359
4360 return 0;
4361 }
4362
4363 static int
rocker_cmd_get_port_stats_ethtool_proc(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info,void * priv)4364 rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker,
4365 struct rocker_port *rocker_port,
4366 struct rocker_desc_info *desc_info,
4367 void *priv)
4368 {
4369 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4370 struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4371 struct rocker_tlv *pattr;
4372 u32 pport;
4373 u64 *data = priv;
4374 int i;
4375
4376 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4377
4378 if (!attrs[ROCKER_TLV_CMD_INFO])
4379 return -EIO;
4380
4381 rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4382 attrs[ROCKER_TLV_CMD_INFO]);
4383
4384 if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
4385 return -EIO;
4386
4387 pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4388 if (pport != rocker_port->pport)
4389 return -EIO;
4390
4391 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4392 pattr = stats_attrs[rocker_port_stats[i].type];
4393 if (!pattr)
4394 continue;
4395
4396 data[i] = rocker_tlv_get_u64(pattr);
4397 }
4398
4399 return 0;
4400 }
4401
rocker_cmd_get_port_stats_ethtool(struct rocker_port * rocker_port,void * priv)4402 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4403 void *priv)
4404 {
4405 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
4406 rocker_cmd_get_port_stats_prep, NULL,
4407 rocker_cmd_get_port_stats_ethtool_proc,
4408 priv, false);
4409 }
4410
rocker_port_get_stats(struct net_device * dev,struct ethtool_stats * stats,u64 * data)4411 static void rocker_port_get_stats(struct net_device *dev,
4412 struct ethtool_stats *stats, u64 *data)
4413 {
4414 struct rocker_port *rocker_port = netdev_priv(dev);
4415
4416 if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4417 int i;
4418
4419 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4420 data[i] = 0;
4421 }
4422
4423 return;
4424 }
4425
rocker_port_get_sset_count(struct net_device * netdev,int sset)4426 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4427 {
4428 switch (sset) {
4429 case ETH_SS_STATS:
4430 return ROCKER_PORT_STATS_LEN;
4431 default:
4432 return -EOPNOTSUPP;
4433 }
4434 }
4435
4436 static const struct ethtool_ops rocker_port_ethtool_ops = {
4437 .get_settings = rocker_port_get_settings,
4438 .set_settings = rocker_port_set_settings,
4439 .get_drvinfo = rocker_port_get_drvinfo,
4440 .get_link = ethtool_op_get_link,
4441 .get_strings = rocker_port_get_strings,
4442 .get_ethtool_stats = rocker_port_get_stats,
4443 .get_sset_count = rocker_port_get_sset_count,
4444 };
4445
4446 /*****************
4447 * NAPI interface
4448 *****************/
4449
rocker_port_napi_tx_get(struct napi_struct * napi)4450 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4451 {
4452 return container_of(napi, struct rocker_port, napi_tx);
4453 }
4454
rocker_port_poll_tx(struct napi_struct * napi,int budget)4455 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4456 {
4457 struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4458 struct rocker *rocker = rocker_port->rocker;
4459 struct rocker_desc_info *desc_info;
4460 u32 credits = 0;
4461 int err;
4462
4463 /* Cleanup tx descriptors */
4464 while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
4465 struct sk_buff *skb;
4466
4467 err = rocker_desc_err(desc_info);
4468 if (err && net_ratelimit())
4469 netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4470 err);
4471 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4472
4473 skb = rocker_desc_cookie_ptr_get(desc_info);
4474 if (err == 0) {
4475 rocker_port->dev->stats.tx_packets++;
4476 rocker_port->dev->stats.tx_bytes += skb->len;
4477 } else
4478 rocker_port->dev->stats.tx_errors++;
4479
4480 dev_kfree_skb_any(skb);
4481 credits++;
4482 }
4483
4484 if (credits && netif_queue_stopped(rocker_port->dev))
4485 netif_wake_queue(rocker_port->dev);
4486
4487 napi_complete(napi);
4488 rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4489
4490 return 0;
4491 }
4492
rocker_port_rx_proc(struct rocker * rocker,struct rocker_port * rocker_port,struct rocker_desc_info * desc_info)4493 static int rocker_port_rx_proc(struct rocker *rocker,
4494 struct rocker_port *rocker_port,
4495 struct rocker_desc_info *desc_info)
4496 {
4497 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4498 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4499 size_t rx_len;
4500
4501 if (!skb)
4502 return -ENOENT;
4503
4504 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4505 if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4506 return -EINVAL;
4507
4508 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4509
4510 rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4511 skb_put(skb, rx_len);
4512 skb->protocol = eth_type_trans(skb, rocker_port->dev);
4513
4514 rocker_port->dev->stats.rx_packets++;
4515 rocker_port->dev->stats.rx_bytes += skb->len;
4516
4517 netif_receive_skb(skb);
4518
4519 return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
4520 }
4521
rocker_port_napi_rx_get(struct napi_struct * napi)4522 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4523 {
4524 return container_of(napi, struct rocker_port, napi_rx);
4525 }
4526
rocker_port_poll_rx(struct napi_struct * napi,int budget)4527 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4528 {
4529 struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4530 struct rocker *rocker = rocker_port->rocker;
4531 struct rocker_desc_info *desc_info;
4532 u32 credits = 0;
4533 int err;
4534
4535 /* Process rx descriptors */
4536 while (credits < budget &&
4537 (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4538 err = rocker_desc_err(desc_info);
4539 if (err) {
4540 if (net_ratelimit())
4541 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4542 err);
4543 } else {
4544 err = rocker_port_rx_proc(rocker, rocker_port,
4545 desc_info);
4546 if (err && net_ratelimit())
4547 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4548 err);
4549 }
4550 if (err)
4551 rocker_port->dev->stats.rx_errors++;
4552
4553 rocker_desc_gen_clear(desc_info);
4554 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4555 credits++;
4556 }
4557
4558 if (credits < budget)
4559 napi_complete(napi);
4560
4561 rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4562
4563 return credits;
4564 }
4565
4566 /*****************
4567 * PCI driver ops
4568 *****************/
4569
rocker_carrier_init(struct rocker_port * rocker_port)4570 static void rocker_carrier_init(struct rocker_port *rocker_port)
4571 {
4572 struct rocker *rocker = rocker_port->rocker;
4573 u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4574 bool link_up;
4575
4576 link_up = link_status & (1 << rocker_port->pport);
4577 if (link_up)
4578 netif_carrier_on(rocker_port->dev);
4579 else
4580 netif_carrier_off(rocker_port->dev);
4581 }
4582
rocker_remove_ports(struct rocker * rocker)4583 static void rocker_remove_ports(struct rocker *rocker)
4584 {
4585 struct rocker_port *rocker_port;
4586 int i;
4587
4588 for (i = 0; i < rocker->port_count; i++) {
4589 rocker_port = rocker->ports[i];
4590 rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE);
4591 unregister_netdev(rocker_port->dev);
4592 free_netdev(rocker_port->dev);
4593 }
4594 kfree(rocker->ports);
4595 }
4596
rocker_port_dev_addr_init(struct rocker * rocker,struct rocker_port * rocker_port)4597 static void rocker_port_dev_addr_init(struct rocker *rocker,
4598 struct rocker_port *rocker_port)
4599 {
4600 struct pci_dev *pdev = rocker->pdev;
4601 int err;
4602
4603 err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4604 rocker_port->dev->dev_addr);
4605 if (err) {
4606 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4607 eth_hw_addr_random(rocker_port->dev);
4608 }
4609 }
4610
rocker_probe_port(struct rocker * rocker,unsigned int port_number)4611 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4612 {
4613 struct pci_dev *pdev = rocker->pdev;
4614 struct rocker_port *rocker_port;
4615 struct net_device *dev;
4616 int err;
4617
4618 dev = alloc_etherdev(sizeof(struct rocker_port));
4619 if (!dev)
4620 return -ENOMEM;
4621 rocker_port = netdev_priv(dev);
4622 rocker_port->dev = dev;
4623 rocker_port->rocker = rocker;
4624 rocker_port->port_number = port_number;
4625 rocker_port->pport = port_number + 1;
4626 rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4627
4628 rocker_port_dev_addr_init(rocker, rocker_port);
4629 dev->netdev_ops = &rocker_port_netdev_ops;
4630 dev->ethtool_ops = &rocker_port_ethtool_ops;
4631 dev->swdev_ops = &rocker_port_swdev_ops;
4632 netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4633 NAPI_POLL_WEIGHT);
4634 netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4635 NAPI_POLL_WEIGHT);
4636 rocker_carrier_init(rocker_port);
4637
4638 dev->features |= NETIF_F_NETNS_LOCAL |
4639 NETIF_F_HW_VLAN_CTAG_FILTER |
4640 NETIF_F_HW_SWITCH_OFFLOAD;
4641
4642 err = register_netdev(dev);
4643 if (err) {
4644 dev_err(&pdev->dev, "register_netdev failed\n");
4645 goto err_register_netdev;
4646 }
4647 rocker->ports[port_number] = rocker_port;
4648
4649 rocker_port_set_learning(rocker_port);
4650
4651 rocker_port->internal_vlan_id =
4652 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4653 err = rocker_port_ig_tbl(rocker_port, 0);
4654 if (err) {
4655 dev_err(&pdev->dev, "install ig port table failed\n");
4656 goto err_port_ig_tbl;
4657 }
4658
4659 return 0;
4660
4661 err_port_ig_tbl:
4662 unregister_netdev(dev);
4663 err_register_netdev:
4664 free_netdev(dev);
4665 return err;
4666 }
4667
rocker_probe_ports(struct rocker * rocker)4668 static int rocker_probe_ports(struct rocker *rocker)
4669 {
4670 int i;
4671 size_t alloc_size;
4672 int err;
4673
4674 alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4675 rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
4676 if (!rocker->ports)
4677 return -ENOMEM;
4678 for (i = 0; i < rocker->port_count; i++) {
4679 err = rocker_probe_port(rocker, i);
4680 if (err)
4681 goto remove_ports;
4682 }
4683 return 0;
4684
4685 remove_ports:
4686 rocker_remove_ports(rocker);
4687 return err;
4688 }
4689
rocker_msix_init(struct rocker * rocker)4690 static int rocker_msix_init(struct rocker *rocker)
4691 {
4692 struct pci_dev *pdev = rocker->pdev;
4693 int msix_entries;
4694 int i;
4695 int err;
4696
4697 msix_entries = pci_msix_vec_count(pdev);
4698 if (msix_entries < 0)
4699 return msix_entries;
4700
4701 if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4702 return -EINVAL;
4703
4704 rocker->msix_entries = kmalloc_array(msix_entries,
4705 sizeof(struct msix_entry),
4706 GFP_KERNEL);
4707 if (!rocker->msix_entries)
4708 return -ENOMEM;
4709
4710 for (i = 0; i < msix_entries; i++)
4711 rocker->msix_entries[i].entry = i;
4712
4713 err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4714 if (err < 0)
4715 goto err_enable_msix;
4716
4717 return 0;
4718
4719 err_enable_msix:
4720 kfree(rocker->msix_entries);
4721 return err;
4722 }
4723
rocker_msix_fini(struct rocker * rocker)4724 static void rocker_msix_fini(struct rocker *rocker)
4725 {
4726 pci_disable_msix(rocker->pdev);
4727 kfree(rocker->msix_entries);
4728 }
4729
rocker_probe(struct pci_dev * pdev,const struct pci_device_id * id)4730 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4731 {
4732 struct rocker *rocker;
4733 int err;
4734
4735 rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4736 if (!rocker)
4737 return -ENOMEM;
4738
4739 err = pci_enable_device(pdev);
4740 if (err) {
4741 dev_err(&pdev->dev, "pci_enable_device failed\n");
4742 goto err_pci_enable_device;
4743 }
4744
4745 err = pci_request_regions(pdev, rocker_driver_name);
4746 if (err) {
4747 dev_err(&pdev->dev, "pci_request_regions failed\n");
4748 goto err_pci_request_regions;
4749 }
4750
4751 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4752 if (!err) {
4753 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4754 if (err) {
4755 dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4756 goto err_pci_set_dma_mask;
4757 }
4758 } else {
4759 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4760 if (err) {
4761 dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
4762 goto err_pci_set_dma_mask;
4763 }
4764 }
4765
4766 if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
4767 dev_err(&pdev->dev, "invalid PCI region size\n");
4768 err = -EINVAL;
4769 goto err_pci_resource_len_check;
4770 }
4771
4772 rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
4773 pci_resource_len(pdev, 0));
4774 if (!rocker->hw_addr) {
4775 dev_err(&pdev->dev, "ioremap failed\n");
4776 err = -EIO;
4777 goto err_ioremap;
4778 }
4779 pci_set_master(pdev);
4780
4781 rocker->pdev = pdev;
4782 pci_set_drvdata(pdev, rocker);
4783
4784 rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
4785
4786 err = rocker_msix_init(rocker);
4787 if (err) {
4788 dev_err(&pdev->dev, "MSI-X init failed\n");
4789 goto err_msix_init;
4790 }
4791
4792 err = rocker_basic_hw_test(rocker);
4793 if (err) {
4794 dev_err(&pdev->dev, "basic hw test failed\n");
4795 goto err_basic_hw_test;
4796 }
4797
4798 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4799
4800 err = rocker_dma_rings_init(rocker);
4801 if (err)
4802 goto err_dma_rings_init;
4803
4804 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
4805 rocker_cmd_irq_handler, 0,
4806 rocker_driver_name, rocker);
4807 if (err) {
4808 dev_err(&pdev->dev, "cannot assign cmd irq\n");
4809 goto err_request_cmd_irq;
4810 }
4811
4812 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
4813 rocker_event_irq_handler, 0,
4814 rocker_driver_name, rocker);
4815 if (err) {
4816 dev_err(&pdev->dev, "cannot assign event irq\n");
4817 goto err_request_event_irq;
4818 }
4819
4820 rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
4821
4822 err = rocker_init_tbls(rocker);
4823 if (err) {
4824 dev_err(&pdev->dev, "cannot init rocker tables\n");
4825 goto err_init_tbls;
4826 }
4827
4828 err = rocker_probe_ports(rocker);
4829 if (err) {
4830 dev_err(&pdev->dev, "failed to probe ports\n");
4831 goto err_probe_ports;
4832 }
4833
4834 dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
4835
4836 return 0;
4837
4838 err_probe_ports:
4839 rocker_free_tbls(rocker);
4840 err_init_tbls:
4841 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4842 err_request_event_irq:
4843 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4844 err_request_cmd_irq:
4845 rocker_dma_rings_fini(rocker);
4846 err_dma_rings_init:
4847 err_basic_hw_test:
4848 rocker_msix_fini(rocker);
4849 err_msix_init:
4850 iounmap(rocker->hw_addr);
4851 err_ioremap:
4852 err_pci_resource_len_check:
4853 err_pci_set_dma_mask:
4854 pci_release_regions(pdev);
4855 err_pci_request_regions:
4856 pci_disable_device(pdev);
4857 err_pci_enable_device:
4858 kfree(rocker);
4859 return err;
4860 }
4861
rocker_remove(struct pci_dev * pdev)4862 static void rocker_remove(struct pci_dev *pdev)
4863 {
4864 struct rocker *rocker = pci_get_drvdata(pdev);
4865
4866 rocker_free_tbls(rocker);
4867 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4868 rocker_remove_ports(rocker);
4869 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4870 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4871 rocker_dma_rings_fini(rocker);
4872 rocker_msix_fini(rocker);
4873 iounmap(rocker->hw_addr);
4874 pci_release_regions(rocker->pdev);
4875 pci_disable_device(rocker->pdev);
4876 kfree(rocker);
4877 }
4878
4879 static struct pci_driver rocker_pci_driver = {
4880 .name = rocker_driver_name,
4881 .id_table = rocker_pci_id_table,
4882 .probe = rocker_probe,
4883 .remove = rocker_remove,
4884 };
4885
4886 /************************************
4887 * Net device notifier event handler
4888 ************************************/
4889
rocker_port_dev_check(struct net_device * dev)4890 static bool rocker_port_dev_check(struct net_device *dev)
4891 {
4892 return dev->netdev_ops == &rocker_port_netdev_ops;
4893 }
4894
rocker_port_bridge_join(struct rocker_port * rocker_port,struct net_device * bridge)4895 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
4896 struct net_device *bridge)
4897 {
4898 int err;
4899
4900 rocker_port_internal_vlan_id_put(rocker_port,
4901 rocker_port->dev->ifindex);
4902
4903 rocker_port->bridge_dev = bridge;
4904
4905 /* Use bridge internal VLAN ID for untagged pkts */
4906 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4907 if (err)
4908 return err;
4909 rocker_port->internal_vlan_id =
4910 rocker_port_internal_vlan_id_get(rocker_port,
4911 bridge->ifindex);
4912 return rocker_port_vlan(rocker_port, 0, 0);
4913 }
4914
rocker_port_bridge_leave(struct rocker_port * rocker_port)4915 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
4916 {
4917 int err;
4918
4919 rocker_port_internal_vlan_id_put(rocker_port,
4920 rocker_port->bridge_dev->ifindex);
4921
4922 rocker_port->bridge_dev = NULL;
4923
4924 /* Use port internal VLAN ID for untagged pkts */
4925 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4926 if (err)
4927 return err;
4928 rocker_port->internal_vlan_id =
4929 rocker_port_internal_vlan_id_get(rocker_port,
4930 rocker_port->dev->ifindex);
4931 err = rocker_port_vlan(rocker_port, 0, 0);
4932 if (err)
4933 return err;
4934
4935 if (rocker_port->dev->flags & IFF_UP)
4936 err = rocker_port_fwd_enable(rocker_port);
4937
4938 return err;
4939 }
4940
rocker_port_master_changed(struct net_device * dev)4941 static int rocker_port_master_changed(struct net_device *dev)
4942 {
4943 struct rocker_port *rocker_port = netdev_priv(dev);
4944 struct net_device *master = netdev_master_upper_dev_get(dev);
4945 int err = 0;
4946
4947 /* There are currently three cases handled here:
4948 * 1. Joining a bridge
4949 * 2. Leaving a previously joined bridge
4950 * 3. Other, e.g. being added to or removed from a bond or openvswitch,
4951 * in which case nothing is done
4952 */
4953 if (master && master->rtnl_link_ops &&
4954 !strcmp(master->rtnl_link_ops->kind, "bridge"))
4955 err = rocker_port_bridge_join(rocker_port, master);
4956 else if (rocker_port_is_bridged(rocker_port))
4957 err = rocker_port_bridge_leave(rocker_port);
4958
4959 return err;
4960 }
4961
rocker_netdevice_event(struct notifier_block * unused,unsigned long event,void * ptr)4962 static int rocker_netdevice_event(struct notifier_block *unused,
4963 unsigned long event, void *ptr)
4964 {
4965 struct net_device *dev;
4966 int err;
4967
4968 switch (event) {
4969 case NETDEV_CHANGEUPPER:
4970 dev = netdev_notifier_info_to_dev(ptr);
4971 if (!rocker_port_dev_check(dev))
4972 return NOTIFY_DONE;
4973 err = rocker_port_master_changed(dev);
4974 if (err)
4975 netdev_warn(dev,
4976 "failed to reflect master change (err %d)\n",
4977 err);
4978 break;
4979 }
4980
4981 return NOTIFY_DONE;
4982 }
4983
4984 static struct notifier_block rocker_netdevice_nb __read_mostly = {
4985 .notifier_call = rocker_netdevice_event,
4986 };
4987
4988 /************************************
4989 * Net event notifier event handler
4990 ************************************/
4991
rocker_neigh_update(struct net_device * dev,struct neighbour * n)4992 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
4993 {
4994 struct rocker_port *rocker_port = netdev_priv(dev);
4995 int flags = (n->nud_state & NUD_VALID) ? 0 : ROCKER_OP_FLAG_REMOVE;
4996 __be32 ip_addr = *(__be32 *)n->primary_key;
4997
4998 return rocker_port_ipv4_neigh(rocker_port, flags, ip_addr, n->ha);
4999 }
5000
rocker_netevent_event(struct notifier_block * unused,unsigned long event,void * ptr)5001 static int rocker_netevent_event(struct notifier_block *unused,
5002 unsigned long event, void *ptr)
5003 {
5004 struct net_device *dev;
5005 struct neighbour *n = ptr;
5006 int err;
5007
5008 switch (event) {
5009 case NETEVENT_NEIGH_UPDATE:
5010 if (n->tbl != &arp_tbl)
5011 return NOTIFY_DONE;
5012 dev = n->dev;
5013 if (!rocker_port_dev_check(dev))
5014 return NOTIFY_DONE;
5015 err = rocker_neigh_update(dev, n);
5016 if (err)
5017 netdev_warn(dev,
5018 "failed to handle neigh update (err %d)\n",
5019 err);
5020 break;
5021 }
5022
5023 return NOTIFY_DONE;
5024 }
5025
5026 static struct notifier_block rocker_netevent_nb __read_mostly = {
5027 .notifier_call = rocker_netevent_event,
5028 };
5029
5030 /***********************
5031 * Module init and exit
5032 ***********************/
5033
rocker_module_init(void)5034 static int __init rocker_module_init(void)
5035 {
5036 int err;
5037
5038 register_netdevice_notifier(&rocker_netdevice_nb);
5039 register_netevent_notifier(&rocker_netevent_nb);
5040 err = pci_register_driver(&rocker_pci_driver);
5041 if (err)
5042 goto err_pci_register_driver;
5043 return 0;
5044
5045 err_pci_register_driver:
5046 unregister_netdevice_notifier(&rocker_netevent_nb);
5047 unregister_netdevice_notifier(&rocker_netdevice_nb);
5048 return err;
5049 }
5050
rocker_module_exit(void)5051 static void __exit rocker_module_exit(void)
5052 {
5053 unregister_netevent_notifier(&rocker_netevent_nb);
5054 unregister_netdevice_notifier(&rocker_netdevice_nb);
5055 pci_unregister_driver(&rocker_pci_driver);
5056 }
5057
5058 module_init(rocker_module_init);
5059 module_exit(rocker_module_exit);
5060
5061 MODULE_LICENSE("GPL v2");
5062 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
5063 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
5064 MODULE_DESCRIPTION("Rocker switch device driver");
5065 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);
5066