]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/blame - drivers/net/ethernet/rocker/rocker.c
projects / mirror_ubuntu-disco-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
rocker: implement ndo_fdb_dump
[mirror_ubuntu-disco-kernel.git] / drivers / net / ethernet / rocker / rocker.c
CommitLineData
4b8ac966
JP		 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>
9f6bbf7c 19#include <linux/hashtable.h>
4b8ac966
JP		 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>
6c707945 31#include <linux/if_bridge.h>
9f6bbf7c 32#include <linux/bitops.h>
4b8ac966
JP		 33#include <net/switchdev.h>
34#include <net/rtnetlink.h>
35#include <asm-generic/io-64-nonatomic-lo-hi.h>
36#include <generated/utsrelease.h>
37
38#include "rocker.h"
39
40static const char rocker_driver_name[] = "rocker";
41
42static const struct pci_device_id rocker_pci_id_table[] = {
43 {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
44 {0, }
45};
46
9f6bbf7c
SF		 47struct rocker_flow_tbl_key {
48 u32 priority;
49 enum rocker_of_dpa_table_id tbl_id;
50 union {
51 struct {
52 u32 in_lport;
53 u32 in_lport_mask;
54 enum rocker_of_dpa_table_id goto_tbl;
55 } ig_port;
56 struct {
57 u32 in_lport;
58 __be16 vlan_id;
59 __be16 vlan_id_mask;
60 enum rocker_of_dpa_table_id goto_tbl;
61 bool untagged;
62 __be16 new_vlan_id;
63 } vlan;
64 struct {
65 u32 in_lport;
66 u32 in_lport_mask;
67 __be16 eth_type;
68 u8 eth_dst[ETH_ALEN];
69 u8 eth_dst_mask[ETH_ALEN];
70 __be16 vlan_id;
71 __be16 vlan_id_mask;
72 enum rocker_of_dpa_table_id goto_tbl;
73 bool copy_to_cpu;
74 } term_mac;
75 struct {
76 __be16 eth_type;
77 __be32 dst4;
78 __be32 dst4_mask;
79 enum rocker_of_dpa_table_id goto_tbl;
80 u32 group_id;
81 } ucast_routing;
82 struct {
83 u8 eth_dst[ETH_ALEN];
84 u8 eth_dst_mask[ETH_ALEN];
85 int has_eth_dst;
86 int has_eth_dst_mask;
87 __be16 vlan_id;
88 u32 tunnel_id;
89 enum rocker_of_dpa_table_id goto_tbl;
90 u32 group_id;
91 bool copy_to_cpu;
92 } bridge;
93 struct {
94 u32 in_lport;
95 u32 in_lport_mask;
96 u8 eth_src[ETH_ALEN];
97 u8 eth_src_mask[ETH_ALEN];
98 u8 eth_dst[ETH_ALEN];
99 u8 eth_dst_mask[ETH_ALEN];
100 __be16 eth_type;
101 __be16 vlan_id;
102 __be16 vlan_id_mask;
103 u8 ip_proto;
104 u8 ip_proto_mask;
105 u8 ip_tos;
106 u8 ip_tos_mask;
107 u32 group_id;
108 } acl;
109 };
110};
111
112struct rocker_flow_tbl_entry {
113 struct hlist_node entry;
114 u32 ref_count;
115 u64 cookie;
116 struct rocker_flow_tbl_key key;
117 u32 key_crc32; /* key */
118};
119
120struct rocker_group_tbl_entry {
121 struct hlist_node entry;
122 u32 cmd;
123 u32 group_id; /* key */
124 u16 group_count;
125 u32 *group_ids;
126 union {
127 struct {
128 u8 pop_vlan;
129 } l2_interface;
130 struct {
131 u8 eth_src[ETH_ALEN];
132 u8 eth_dst[ETH_ALEN];
133 __be16 vlan_id;
134 u32 group_id;
135 } l2_rewrite;
136 struct {
137 u8 eth_src[ETH_ALEN];
138 u8 eth_dst[ETH_ALEN];
139 __be16 vlan_id;
140 bool ttl_check;
141 u32 group_id;
142 } l3_unicast;
143 };
144};
145
146struct rocker_fdb_tbl_entry {
147 struct hlist_node entry;
148 u32 key_crc32; /* key */
149 bool learned;
150 struct rocker_fdb_tbl_key {
151 u32 lport;
152 u8 addr[ETH_ALEN];
153 __be16 vlan_id;
154 } key;
155};
156
157struct rocker_internal_vlan_tbl_entry {
158 struct hlist_node entry;
159 int ifindex; /* key */
160 u32 ref_count;
161 __be16 vlan_id;
162};
163
4b8ac966
JP		 164struct rocker_desc_info {
165 char *data; /* mapped */
166 size_t data_size;
167 size_t tlv_size;
168 struct rocker_desc *desc;
169 DEFINE_DMA_UNMAP_ADDR(mapaddr);
170};
171
172struct rocker_dma_ring_info {
173 size_t size;
174 u32 head;
175 u32 tail;
176 struct rocker_desc *desc; /* mapped */
177 dma_addr_t mapaddr;
178 struct rocker_desc_info *desc_info;
179 unsigned int type;
180};
181
182struct rocker;
183
9f6bbf7c
SF		 184enum {
185 ROCKER_CTRL_LINK_LOCAL_MCAST,
186 ROCKER_CTRL_LOCAL_ARP,
187 ROCKER_CTRL_IPV4_MCAST,
188 ROCKER_CTRL_IPV6_MCAST,
189 ROCKER_CTRL_DFLT_BRIDGING,
190 ROCKER_CTRL_MAX,
191};
192
193#define ROCKER_INTERNAL_VLAN_ID_BASE 0x0f00
194#define ROCKER_N_INTERNAL_VLANS 255
195#define ROCKER_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
196#define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
197
4b8ac966
JP		 198struct rocker_port {
199 struct net_device *dev;
6c707945 200 struct net_device *bridge_dev;
4b8ac966
JP		 201 struct rocker *rocker;
202 unsigned int port_number;
203 u32 lport;
9f6bbf7c 204 __be16 internal_vlan_id;
6c707945 205 int stp_state;
9f6bbf7c
SF		 206 bool ctrls[ROCKER_CTRL_MAX];
207 unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
4b8ac966
JP		 208 struct napi_struct napi_tx;
209 struct napi_struct napi_rx;
210 struct rocker_dma_ring_info tx_ring;
211 struct rocker_dma_ring_info rx_ring;
212};
213
214struct rocker {
215 struct pci_dev *pdev;
216 u8 __iomem *hw_addr;
217 struct msix_entry *msix_entries;
218 unsigned int port_count;
219 struct rocker_port **ports;
220 struct {
221 u64 id;
222 } hw;
223 spinlock_t cmd_ring_lock;
224 struct rocker_dma_ring_info cmd_ring;
225 struct rocker_dma_ring_info event_ring;
9f6bbf7c
SF		 226 DECLARE_HASHTABLE(flow_tbl, 16);
227 spinlock_t flow_tbl_lock;
228 u64 flow_tbl_next_cookie;
229 DECLARE_HASHTABLE(group_tbl, 16);
230 spinlock_t group_tbl_lock;
231 DECLARE_HASHTABLE(fdb_tbl, 16);
232 spinlock_t fdb_tbl_lock;
233 unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
234 DECLARE_HASHTABLE(internal_vlan_tbl, 8);
235 spinlock_t internal_vlan_tbl_lock;
236};
237
238static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
239static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
240static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
241static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
242static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
243static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
244static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
245static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
246static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
247
248/* Rocker priority levels for flow table entries. Higher
249 * priority match takes precedence over lower priority match.
250 */
251
252enum {
253 ROCKER_PRIORITY_UNKNOWN = 0,
254 ROCKER_PRIORITY_IG_PORT = 1,
255 ROCKER_PRIORITY_VLAN = 1,
256 ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
257 ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
258 ROCKER_PRIORITY_UNICAST_ROUTING = 1,
259 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
260 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
261 ROCKER_PRIORITY_BRIDGING_VLAN = 3,
262 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
263 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
264 ROCKER_PRIORITY_BRIDGING_TENANT = 3,
265 ROCKER_PRIORITY_ACL_CTRL = 3,
266 ROCKER_PRIORITY_ACL_NORMAL = 2,
267 ROCKER_PRIORITY_ACL_DFLT = 1,
4b8ac966
JP		 268};
269
9f6bbf7c
SF		 270static bool rocker_vlan_id_is_internal(__be16 vlan_id)
271{
272 u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
273 u16 end = 0xffe;
274 u16 _vlan_id = ntohs(vlan_id);
275
276 return (_vlan_id >= start && _vlan_id <= end);
277}
278
279static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port,
280 u16 vid, bool *pop_vlan)
281{
282 __be16 vlan_id;
283
284 if (pop_vlan)
285 *pop_vlan = false;
286 vlan_id = htons(vid);
287 if (!vlan_id) {
288 vlan_id = rocker_port->internal_vlan_id;
289 if (pop_vlan)
290 *pop_vlan = true;
291 }
292
293 return vlan_id;
294}
295
6c707945
SF		 296static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port,
297 __be16 vlan_id)
298{
299 if (rocker_vlan_id_is_internal(vlan_id))
300 return 0;
301
302 return ntohs(vlan_id);
303}
304
305static bool rocker_port_is_bridged(struct rocker_port *rocker_port)
306{
307 return !!rocker_port->bridge_dev;
308}
309
4b8ac966
JP		 310struct rocker_wait {
311 wait_queue_head_t wait;
312 bool done;
313 bool nowait;
314};
315
316static void rocker_wait_reset(struct rocker_wait *wait)
317{
318 wait->done = false;
319 wait->nowait = false;
320}
321
322static void rocker_wait_init(struct rocker_wait *wait)
323{
324 init_waitqueue_head(&wait->wait);
325 rocker_wait_reset(wait);
326}
327
328static struct rocker_wait *rocker_wait_create(gfp_t gfp)
329{
330 struct rocker_wait *wait;
331
332 wait = kmalloc(sizeof(*wait), gfp);
333 if (!wait)
334 return NULL;
335 rocker_wait_init(wait);
336 return wait;
337}
338
339static void rocker_wait_destroy(struct rocker_wait *work)
340{
341 kfree(work);
342}
343
344static bool rocker_wait_event_timeout(struct rocker_wait *wait,
345 unsigned long timeout)
346{
347 wait_event_timeout(wait->wait, wait->done, HZ / 10);
348 if (!wait->done)
349 return false;
350 return true;
351}
352
353static void rocker_wait_wake_up(struct rocker_wait *wait)
354{
355 wait->done = true;
356 wake_up(&wait->wait);
357}
358
359static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector)
360{
361 return rocker->msix_entries[vector].vector;
362}
363
364static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port)
365{
366 return rocker_msix_vector(rocker_port->rocker,
367 ROCKER_MSIX_VEC_TX(rocker_port->port_number));
368}
369
370static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port)
371{
372 return rocker_msix_vector(rocker_port->rocker,
373 ROCKER_MSIX_VEC_RX(rocker_port->port_number));
374}
375
376#define rocker_write32(rocker, reg, val) \
377 writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
378#define rocker_read32(rocker, reg) \
379 readl((rocker)->hw_addr + (ROCKER_ ## reg))
380#define rocker_write64(rocker, reg, val) \
381 writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
382#define rocker_read64(rocker, reg) \
383 readq((rocker)->hw_addr + (ROCKER_ ## reg))
384
385/*****************************
386 * HW basic testing functions
387 *****************************/
388
389static int rocker_reg_test(struct rocker *rocker)
390{
391 struct pci_dev *pdev = rocker->pdev;
392 u64 test_reg;
393 u64 rnd;
394
395 rnd = prandom_u32();
396 rnd >>= 1;
397 rocker_write32(rocker, TEST_REG, rnd);
398 test_reg = rocker_read32(rocker, TEST_REG);
399 if (test_reg != rnd * 2) {
400 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
401 test_reg, rnd * 2);
402 return -EIO;
403 }
404
405 rnd = prandom_u32();
406 rnd <<= 31;
407 rnd |= prandom_u32();
408 rocker_write64(rocker, TEST_REG64, rnd);
409 test_reg = rocker_read64(rocker, TEST_REG64);
410 if (test_reg != rnd * 2) {
411 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
412 test_reg, rnd * 2);
413 return -EIO;
414 }
415
416 return 0;
417}
418
419static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait,
420 u32 test_type, dma_addr_t dma_handle,
421 unsigned char *buf, unsigned char *expect,
422 size_t size)
423{
424 struct pci_dev *pdev = rocker->pdev;
425 int i;
426
427 rocker_wait_reset(wait);
428 rocker_write32(rocker, TEST_DMA_CTRL, test_type);
429
430 if (!rocker_wait_event_timeout(wait, HZ / 10)) {
431 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
432 return -EIO;
433 }
434
435 for (i = 0; i < size; i++) {
436 if (buf[i] != expect[i]) {
437 dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
438 buf[i], i, expect[i]);
439 return -EIO;
440 }
441 }
442 return 0;
443}
444
445#define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
446#define ROCKER_TEST_DMA_FILL_PATTERN 0x96
447
448static int rocker_dma_test_offset(struct rocker *rocker,
449 struct rocker_wait *wait, int offset)
450{
451 struct pci_dev *pdev = rocker->pdev;
452 unsigned char *alloc;
453 unsigned char *buf;
454 unsigned char *expect;
455 dma_addr_t dma_handle;
456 int i;
457 int err;
458
459 alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
460 GFP_KERNEL | GFP_DMA);
461 if (!alloc)
462 return -ENOMEM;
463 buf = alloc + offset;
464 expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
465
466 dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
467 PCI_DMA_BIDIRECTIONAL);
468 if (pci_dma_mapping_error(pdev, dma_handle)) {
469 err = -EIO;
470 goto free_alloc;
471 }
472
473 rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
474 rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
475
476 memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
477 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
478 dma_handle, buf, expect,
479 ROCKER_TEST_DMA_BUF_SIZE);
480 if (err)
481 goto unmap;
482
483 memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
484 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
485 dma_handle, buf, expect,
486 ROCKER_TEST_DMA_BUF_SIZE);
487 if (err)
488 goto unmap;
489
490 prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
491 for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
492 expect[i] = ~buf[i];
493 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
494 dma_handle, buf, expect,
495 ROCKER_TEST_DMA_BUF_SIZE);
496 if (err)
497 goto unmap;
498
499unmap:
500 pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
501 PCI_DMA_BIDIRECTIONAL);
502free_alloc:
503 kfree(alloc);
504
505 return err;
506}
507
508static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait)
509{
510 int i;
511 int err;
512
513 for (i = 0; i < 8; i++) {
514 err = rocker_dma_test_offset(rocker, wait, i);
515 if (err)
516 return err;
517 }
518 return 0;
519}
520
521static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
522{
523 struct rocker_wait *wait = dev_id;
524
525 rocker_wait_wake_up(wait);
526
527 return IRQ_HANDLED;
528}
529
530static int rocker_basic_hw_test(struct rocker *rocker)
531{
532 struct pci_dev *pdev = rocker->pdev;
533 struct rocker_wait wait;
534 int err;
535
536 err = rocker_reg_test(rocker);
537 if (err) {
538 dev_err(&pdev->dev, "reg test failed\n");
539 return err;
540 }
541
542 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
543 rocker_test_irq_handler, 0,
544 rocker_driver_name, &wait);
545 if (err) {
546 dev_err(&pdev->dev, "cannot assign test irq\n");
547 return err;
548 }
549
550 rocker_wait_init(&wait);
551 rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
552
553 if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
554 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
555 err = -EIO;
556 goto free_irq;
557 }
558
559 err = rocker_dma_test(rocker, &wait);
560 if (err)
561 dev_err(&pdev->dev, "dma test failed\n");
562
563free_irq:
564 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
565 return err;
566}
567
568/******
569 * TLV
570 ******/
571
572#define ROCKER_TLV_ALIGNTO 8U
573#define ROCKER_TLV_ALIGN(len) \
574 (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
575#define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
576
577/* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
578 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
579 * | Header | Pad | Payload | Pad |
580 * | (struct rocker_tlv) | ing | | ing |
581 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
582 * <--------------------------- tlv->len -------------------------->
583 */
584
585static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
586 int *remaining)
587{
588 int totlen = ROCKER_TLV_ALIGN(tlv->len);
589
590 *remaining -= totlen;
591 return (struct rocker_tlv *) ((char *) tlv + totlen);
592}
593
594static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
595{
596 return remaining >= (int) ROCKER_TLV_HDRLEN &&
597 tlv->len >= ROCKER_TLV_HDRLEN &&
598 tlv->len <= remaining;
599}
600
601#define rocker_tlv_for_each(pos, head, len, rem) \
602 for (pos = head, rem = len; \
603 rocker_tlv_ok(pos, rem); \
604 pos = rocker_tlv_next(pos, &(rem)))
605
606#define rocker_tlv_for_each_nested(pos, tlv, rem) \
607 rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \
608 rocker_tlv_len(tlv), rem)
609
610static int rocker_tlv_attr_size(int payload)
611{
612 return ROCKER_TLV_HDRLEN + payload;
613}
614
615static int rocker_tlv_total_size(int payload)
616{
617 return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
618}
619
620static int rocker_tlv_padlen(int payload)
621{
622 return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
623}
624
625static int rocker_tlv_type(const struct rocker_tlv *tlv)
626{
627 return tlv->type;
628}
629
630static void *rocker_tlv_data(const struct rocker_tlv *tlv)
631{
632 return (char *) tlv + ROCKER_TLV_HDRLEN;
633}
634
635static int rocker_tlv_len(const struct rocker_tlv *tlv)
636{
637 return tlv->len - ROCKER_TLV_HDRLEN;
638}
639
640static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
641{
642 return *(u8 *) rocker_tlv_data(tlv);
643}
644
645static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
646{
647 return *(u16 *) rocker_tlv_data(tlv);
648}
649
650static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
651{
652 return *(u32 *) rocker_tlv_data(tlv);
653}
654
655static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
656{
657 return *(u64 *) rocker_tlv_data(tlv);
658}
659
660static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
661 const char *buf, int buf_len)
662{
663 const struct rocker_tlv *tlv;
664 const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
665 int rem;
666
667 memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
668
669 rocker_tlv_for_each(tlv, head, buf_len, rem) {
670 u32 type = rocker_tlv_type(tlv);
671
672 if (type > 0 && type <= maxtype)
673 tb[type] = (struct rocker_tlv *) tlv;
674 }
675}
676
677static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
678 const struct rocker_tlv *tlv)
679{
680 rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
681 rocker_tlv_len(tlv));
682}
683
684static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
685 struct rocker_desc_info *desc_info)
686{
687 rocker_tlv_parse(tb, maxtype, desc_info->data,
688 desc_info->desc->tlv_size);
689}
690
691static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
692{
693 return (struct rocker_tlv *) ((char *) desc_info->data +
694 desc_info->tlv_size);
695}
696
697static int rocker_tlv_put(struct rocker_desc_info *desc_info,
698 int attrtype, int attrlen, const void *data)
699{
700 int tail_room = desc_info->data_size - desc_info->tlv_size;
701 int total_size = rocker_tlv_total_size(attrlen);
702 struct rocker_tlv *tlv;
703
704 if (unlikely(tail_room < total_size))
705 return -EMSGSIZE;
706
707 tlv = rocker_tlv_start(desc_info);
708 desc_info->tlv_size += total_size;
709 tlv->type = attrtype;
710 tlv->len = rocker_tlv_attr_size(attrlen);
711 memcpy(rocker_tlv_data(tlv), data, attrlen);
712 memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
713 return 0;
714}
715
716static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
717 int attrtype, u8 value)
718{
719 return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
720}
721
722static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
723 int attrtype, u16 value)
724{
725 return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
726}
727
728static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
729 int attrtype, u32 value)
730{
731 return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
732}
733
734static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
735 int attrtype, u64 value)
736{
737 return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
738}
739
740static struct rocker_tlv *
741rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
742{
743 struct rocker_tlv *start = rocker_tlv_start(desc_info);
744
745 if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
746 return NULL;
747
748 return start;
749}
750
751static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
752 struct rocker_tlv *start)
753{
754 start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
755}
756
757static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
758 struct rocker_tlv *start)
759{
760 desc_info->tlv_size = (char *) start - desc_info->data;
761}
762
763/******************************************
764 * DMA rings and descriptors manipulations
765 ******************************************/
766
767static u32 __pos_inc(u32 pos, size_t limit)
768{
769 return ++pos == limit ? 0 : pos;
770}
771
772static int rocker_desc_err(struct rocker_desc_info *desc_info)
773{
774 return -(desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN);
775}
776
777static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
778{
779 desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
780}
781
782static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
783{
784 u32 comp_err = desc_info->desc->comp_err;
785
786 return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
787}
788
789static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
790{
791 return (void *) desc_info->desc->cookie;
792}
793
794static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
795 void *ptr)
796{
797 desc_info->desc->cookie = (long) ptr;
798}
799
800static struct rocker_desc_info *
801rocker_desc_head_get(struct rocker_dma_ring_info *info)
802{
803 static struct rocker_desc_info *desc_info;
804 u32 head = __pos_inc(info->head, info->size);
805
806 desc_info = &info->desc_info[info->head];
807 if (head == info->tail)
808 return NULL; /* ring full */
809 desc_info->tlv_size = 0;
810 return desc_info;
811}
812
813static void rocker_desc_commit(struct rocker_desc_info *desc_info)
814{
815 desc_info->desc->buf_size = desc_info->data_size;
816 desc_info->desc->tlv_size = desc_info->tlv_size;
817}
818
819static void rocker_desc_head_set(struct rocker *rocker,
820 struct rocker_dma_ring_info *info,
821 struct rocker_desc_info *desc_info)
822{
823 u32 head = __pos_inc(info->head, info->size);
824
825 BUG_ON(head == info->tail);
826 rocker_desc_commit(desc_info);
827 info->head = head;
828 rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
829}
830
831static struct rocker_desc_info *
832rocker_desc_tail_get(struct rocker_dma_ring_info *info)
833{
834 static struct rocker_desc_info *desc_info;
835
836 if (info->tail == info->head)
837 return NULL; /* nothing to be done between head and tail */
838 desc_info = &info->desc_info[info->tail];
839 if (!rocker_desc_gen(desc_info))
840 return NULL; /* gen bit not set, desc is not ready yet */
841 info->tail = __pos_inc(info->tail, info->size);
842 desc_info->tlv_size = desc_info->desc->tlv_size;
843 return desc_info;
844}
845
846static void rocker_dma_ring_credits_set(struct rocker *rocker,
847 struct rocker_dma_ring_info *info,
848 u32 credits)
849{
850 if (credits)
851 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
852}
853
854static unsigned long rocker_dma_ring_size_fix(size_t size)
855{
856 return max(ROCKER_DMA_SIZE_MIN,
857 min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
858}
859
860static int rocker_dma_ring_create(struct rocker *rocker,
861 unsigned int type,
862 size_t size,
863 struct rocker_dma_ring_info *info)
864{
865 int i;
866
867 BUG_ON(size != rocker_dma_ring_size_fix(size));
868 info->size = size;
869 info->type = type;
870 info->head = 0;
871 info->tail = 0;
872 info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
873 GFP_KERNEL);
874 if (!info->desc_info)
875 return -ENOMEM;
876
877 info->desc = pci_alloc_consistent(rocker->pdev,
878 info->size * sizeof(*info->desc),
879 &info->mapaddr);
880 if (!info->desc) {
881 kfree(info->desc_info);
882 return -ENOMEM;
883 }
884
885 for (i = 0; i < info->size; i++)
886 info->desc_info[i].desc = &info->desc[i];
887
888 rocker_write32(rocker, DMA_DESC_CTRL(info->type),
889 ROCKER_DMA_DESC_CTRL_RESET);
890 rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
891 rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
892
893 return 0;
894}
895
896static void rocker_dma_ring_destroy(struct rocker *rocker,
897 struct rocker_dma_ring_info *info)
898{
899 rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
900
901 pci_free_consistent(rocker->pdev,
902 info->size * sizeof(struct rocker_desc),
903 info->desc, info->mapaddr);
904 kfree(info->desc_info);
905}
906
907static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
908 struct rocker_dma_ring_info *info)
909{
910 int i;
911
912 BUG_ON(info->head || info->tail);
913
914 /* When ring is consumer, we need to advance head for each desc.
915 * That tells hw that the desc is ready to be used by it.
916 */
917 for (i = 0; i < info->size - 1; i++)
918 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
919 rocker_desc_commit(&info->desc_info[i]);
920}
921
922static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
923 struct rocker_dma_ring_info *info,
924 int direction, size_t buf_size)
925{
926 struct pci_dev *pdev = rocker->pdev;
927 int i;
928 int err;
929
930 for (i = 0; i < info->size; i++) {
931 struct rocker_desc_info *desc_info = &info->desc_info[i];
932 struct rocker_desc *desc = &info->desc[i];
933 dma_addr_t dma_handle;
934 char *buf;
935
936 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
937 if (!buf) {
938 err = -ENOMEM;
939 goto rollback;
940 }
941
942 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
943 if (pci_dma_mapping_error(pdev, dma_handle)) {
944 kfree(buf);
945 err = -EIO;
946 goto rollback;
947 }
948
949 desc_info->data = buf;
950 desc_info->data_size = buf_size;
951 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
952
953 desc->buf_addr = dma_handle;
954 desc->buf_size = buf_size;
955 }
956 return 0;
957
958rollback:
959 for (i--; i >= 0; i--) {
960 struct rocker_desc_info *desc_info = &info->desc_info[i];
961
962 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
963 desc_info->data_size, direction);
964 kfree(desc_info->data);
965 }
966 return err;
967}
968
969static void rocker_dma_ring_bufs_free(struct rocker *rocker,
970 struct rocker_dma_ring_info *info,
971 int direction)
972{
973 struct pci_dev *pdev = rocker->pdev;
974 int i;
975
976 for (i = 0; i < info->size; i++) {
977 struct rocker_desc_info *desc_info = &info->desc_info[i];
978 struct rocker_desc *desc = &info->desc[i];
979
980 desc->buf_addr = 0;
981 desc->buf_size = 0;
982 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
983 desc_info->data_size, direction);
984 kfree(desc_info->data);
985 }
986}
987
988static int rocker_dma_rings_init(struct rocker *rocker)
989{
990 struct pci_dev *pdev = rocker->pdev;
991 int err;
992
993 err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
994 ROCKER_DMA_CMD_DEFAULT_SIZE,
995 &rocker->cmd_ring);
996 if (err) {
997 dev_err(&pdev->dev, "failed to create command dma ring\n");
998 return err;
999 }
1000
1001 spin_lock_init(&rocker->cmd_ring_lock);
1002
1003 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1004 PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1005 if (err) {
1006 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1007 goto err_dma_cmd_ring_bufs_alloc;
1008 }
1009
1010 err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1011 ROCKER_DMA_EVENT_DEFAULT_SIZE,
1012 &rocker->event_ring);
1013 if (err) {
1014 dev_err(&pdev->dev, "failed to create event dma ring\n");
1015 goto err_dma_event_ring_create;
1016 }
1017
1018 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1019 PCI_DMA_FROMDEVICE, PAGE_SIZE);
1020 if (err) {
1021 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1022 goto err_dma_event_ring_bufs_alloc;
1023 }
1024 rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1025 return 0;
1026
1027err_dma_event_ring_bufs_alloc:
1028 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1029err_dma_event_ring_create:
1030 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1031 PCI_DMA_BIDIRECTIONAL);
1032err_dma_cmd_ring_bufs_alloc:
1033 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1034 return err;
1035}
1036
1037static void rocker_dma_rings_fini(struct rocker *rocker)
1038{
1039 rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1040 PCI_DMA_BIDIRECTIONAL);
1041 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1042 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1043 PCI_DMA_BIDIRECTIONAL);
1044 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1045}
1046
1047static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1048 struct rocker_port *rocker_port,
1049 struct rocker_desc_info *desc_info,
1050 struct sk_buff *skb, size_t buf_len)
1051{
1052 struct pci_dev *pdev = rocker->pdev;
1053 dma_addr_t dma_handle;
1054
1055 dma_handle = pci_map_single(pdev, skb->data, buf_len,
1056 PCI_DMA_FROMDEVICE);
1057 if (pci_dma_mapping_error(pdev, dma_handle))
1058 return -EIO;
1059 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1060 goto tlv_put_failure;
1061 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1062 goto tlv_put_failure;
1063 return 0;
1064
1065tlv_put_failure:
1066 pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1067 desc_info->tlv_size = 0;
1068 return -EMSGSIZE;
1069}
1070
1071static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1072{
1073 return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1074}
1075
1076static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1077 struct rocker_port *rocker_port,
1078 struct rocker_desc_info *desc_info)
1079{
1080 struct net_device *dev = rocker_port->dev;
1081 struct sk_buff *skb;
1082 size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1083 int err;
1084
1085 /* Ensure that hw will see tlv_size zero in case of an error.
1086 * That tells hw to use another descriptor.
1087 */
1088 rocker_desc_cookie_ptr_set(desc_info, NULL);
1089 desc_info->tlv_size = 0;
1090
1091 skb = netdev_alloc_skb_ip_align(dev, buf_len);
1092 if (!skb)
1093 return -ENOMEM;
1094 err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1095 skb, buf_len);
1096 if (err) {
1097 dev_kfree_skb_any(skb);
1098 return err;
1099 }
1100 rocker_desc_cookie_ptr_set(desc_info, skb);
1101 return 0;
1102}
1103
1104static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1105 struct rocker_tlv **attrs)
1106{
1107 struct pci_dev *pdev = rocker->pdev;
1108 dma_addr_t dma_handle;
1109 size_t len;
1110
1111 if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1112 !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1113 return;
1114 dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1115 len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1116 pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1117}
1118
1119static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1120 struct rocker_desc_info *desc_info)
1121{
1122 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1123 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1124
1125 if (!skb)
1126 return;
1127 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1128 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1129 dev_kfree_skb_any(skb);
1130}
1131
1132static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1133 struct rocker_port *rocker_port)
1134{
1135 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1136 int i;
1137 int err;
1138
1139 for (i = 0; i < rx_ring->size; i++) {
1140 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1141 &rx_ring->desc_info[i]);
1142 if (err)
1143 goto rollback;
1144 }
1145 return 0;
1146
1147rollback:
1148 for (i--; i >= 0; i--)
1149 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1150 return err;
1151}
1152
1153static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1154 struct rocker_port *rocker_port)
1155{
1156 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1157 int i;
1158
1159 for (i = 0; i < rx_ring->size; i++)
1160 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1161}
1162
1163static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1164{
1165 struct rocker *rocker = rocker_port->rocker;
1166 int err;
1167
1168 err = rocker_dma_ring_create(rocker,
1169 ROCKER_DMA_TX(rocker_port->port_number),
1170 ROCKER_DMA_TX_DEFAULT_SIZE,
1171 &rocker_port->tx_ring);
1172 if (err) {
1173 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1174 return err;
1175 }
1176
1177 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1178 PCI_DMA_TODEVICE,
1179 ROCKER_DMA_TX_DESC_SIZE);
1180 if (err) {
1181 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1182 goto err_dma_tx_ring_bufs_alloc;
1183 }
1184
1185 err = rocker_dma_ring_create(rocker,
1186 ROCKER_DMA_RX(rocker_port->port_number),
1187 ROCKER_DMA_RX_DEFAULT_SIZE,
1188 &rocker_port->rx_ring);
1189 if (err) {
1190 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1191 goto err_dma_rx_ring_create;
1192 }
1193
1194 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1195 PCI_DMA_BIDIRECTIONAL,
1196 ROCKER_DMA_RX_DESC_SIZE);
1197 if (err) {
1198 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1199 goto err_dma_rx_ring_bufs_alloc;
1200 }
1201
1202 err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1203 if (err) {
1204 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1205 goto err_dma_rx_ring_skbs_alloc;
1206 }
1207 rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1208
1209 return 0;
1210
1211err_dma_rx_ring_skbs_alloc:
1212 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1213 PCI_DMA_BIDIRECTIONAL);
1214err_dma_rx_ring_bufs_alloc:
1215 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1216err_dma_rx_ring_create:
1217 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1218 PCI_DMA_TODEVICE);
1219err_dma_tx_ring_bufs_alloc:
1220 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1221 return err;
1222}
1223
1224static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1225{
1226 struct rocker *rocker = rocker_port->rocker;
1227
1228 rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1229 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1230 PCI_DMA_BIDIRECTIONAL);
1231 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1232 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1233 PCI_DMA_TODEVICE);
1234 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1235}
1236
1237static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1238{
1239 u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1240
1241 if (enable)
1242 val |= 1 << rocker_port->lport;
1243 else
1244 val &= ~(1 << rocker_port->lport);
1245 rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1246}
1247
1248/********************************
1249 * Interrupt handler and helpers
1250 ********************************/
1251
1252static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1253{
1254 struct rocker *rocker = dev_id;
1255 struct rocker_desc_info *desc_info;
1256 struct rocker_wait *wait;
1257 u32 credits = 0;
1258
1259 spin_lock(&rocker->cmd_ring_lock);
1260 while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1261 wait = rocker_desc_cookie_ptr_get(desc_info);
1262 if (wait->nowait) {
1263 rocker_desc_gen_clear(desc_info);
1264 rocker_wait_destroy(wait);
1265 } else {
1266 rocker_wait_wake_up(wait);
1267 }
1268 credits++;
1269 }
1270 spin_unlock(&rocker->cmd_ring_lock);
1271 rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1272
1273 return IRQ_HANDLED;
1274}
1275
1276static void rocker_port_link_up(struct rocker_port *rocker_port)
1277{
1278 netif_carrier_on(rocker_port->dev);
1279 netdev_info(rocker_port->dev, "Link is up\n");
1280}
1281
1282static void rocker_port_link_down(struct rocker_port *rocker_port)
1283{
1284 netif_carrier_off(rocker_port->dev);
1285 netdev_info(rocker_port->dev, "Link is down\n");
1286}
1287
1288static int rocker_event_link_change(struct rocker *rocker,
1289 const struct rocker_tlv *info)
1290{
1291 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1292 unsigned int port_number;
1293 bool link_up;
1294 struct rocker_port *rocker_port;
1295
1296 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1297 if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LPORT] ||
1298 !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1299 return -EIO;
1300 port_number =
1301 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LPORT]) - 1;
1302 link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1303
1304 if (port_number >= rocker->port_count)
1305 return -EINVAL;
1306
1307 rocker_port = rocker->ports[port_number];
1308 if (netif_carrier_ok(rocker_port->dev) != link_up) {
1309 if (link_up)
1310 rocker_port_link_up(rocker_port);
1311 else
1312 rocker_port_link_down(rocker_port);
1313 }
1314
1315 return 0;
1316}
1317
9f6bbf7c
SF		 1318#define ROCKER_OP_FLAG_REMOVE BIT(0)
1319#define ROCKER_OP_FLAG_NOWAIT BIT(1)
1320#define ROCKER_OP_FLAG_LEARNED BIT(2)
6c707945
SF		 1321#define ROCKER_OP_FLAG_REFRESH BIT(3)
1322
1323static int rocker_port_fdb(struct rocker_port *rocker_port,
1324 const unsigned char *addr,
1325 __be16 vlan_id, int flags);
1326
1327static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1328 const struct rocker_tlv *info)
1329{
1330 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1331 unsigned int port_number;
1332 struct rocker_port *rocker_port;
1333 unsigned char *addr;
1334 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1335 __be16 vlan_id;
1336
1337 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1338 if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_LPORT] ||
1339 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1340 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1341 return -EIO;
1342 port_number =
1343 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_LPORT]) - 1;
1344 addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1345 vlan_id = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1346
1347 if (port_number >= rocker->port_count)
1348 return -EINVAL;
1349
1350 rocker_port = rocker->ports[port_number];
1351
1352 if (rocker_port->stp_state != BR_STATE_LEARNING &&
1353 rocker_port->stp_state != BR_STATE_FORWARDING)
1354 return 0;
1355
1356 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
1357}
9f6bbf7c 1358
4b8ac966
JP		 1359static int rocker_event_process(struct rocker *rocker,
1360 struct rocker_desc_info *desc_info)
1361{
1362 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1363 struct rocker_tlv *info;
1364 u16 type;
1365
1366 rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1367 if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1368 !attrs[ROCKER_TLV_EVENT_INFO])
1369 return -EIO;
1370
1371 type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1372 info = attrs[ROCKER_TLV_EVENT_INFO];
1373
1374 switch (type) {
1375 case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1376 return rocker_event_link_change(rocker, info);
6c707945
SF		 1377 case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1378 return rocker_event_mac_vlan_seen(rocker, info);
4b8ac966
JP		 1379 }
1380
1381 return -EOPNOTSUPP;
1382}
1383
1384static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1385{
1386 struct rocker *rocker = dev_id;
1387 struct pci_dev *pdev = rocker->pdev;
1388 struct rocker_desc_info *desc_info;
1389 u32 credits = 0;
1390 int err;
1391
1392 while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1393 err = rocker_desc_err(desc_info);
1394 if (err) {
1395 dev_err(&pdev->dev, "event desc received with err %d\n",
1396 err);
1397 } else {
1398 err = rocker_event_process(rocker, desc_info);
1399 if (err)
1400 dev_err(&pdev->dev, "event processing failed with err %d\n",
1401 err);
1402 }
1403 rocker_desc_gen_clear(desc_info);
1404 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1405 credits++;
1406 }
1407 rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1408
1409 return IRQ_HANDLED;
1410}
1411
1412static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1413{
1414 struct rocker_port *rocker_port = dev_id;
1415
1416 napi_schedule(&rocker_port->napi_tx);
1417 return IRQ_HANDLED;
1418}
1419
1420static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1421{
1422 struct rocker_port *rocker_port = dev_id;
1423
1424 napi_schedule(&rocker_port->napi_rx);
1425 return IRQ_HANDLED;
1426}
1427
1428/********************
1429 * Command interface
1430 ********************/
1431
1432typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1433 struct rocker_port *rocker_port,
1434 struct rocker_desc_info *desc_info,
1435 void *priv);
1436
1437static int rocker_cmd_exec(struct rocker *rocker,
1438 struct rocker_port *rocker_port,
1439 rocker_cmd_cb_t prepare, void *prepare_priv,
1440 rocker_cmd_cb_t process, void *process_priv,
1441 bool nowait)
1442{
1443 struct rocker_desc_info *desc_info;
1444 struct rocker_wait *wait;
1445 unsigned long flags;
1446 int err;
1447
1448 wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL);
1449 if (!wait)
1450 return -ENOMEM;
1451 wait->nowait = nowait;
1452
1453 spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1454 desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1455 if (!desc_info) {
1456 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1457 err = -EAGAIN;
1458 goto out;
1459 }
1460 err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1461 if (err) {
1462 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1463 goto out;
1464 }
1465 rocker_desc_cookie_ptr_set(desc_info, wait);
1466 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1467 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1468
1469 if (nowait)
1470 return 0;
1471
1472 if (!rocker_wait_event_timeout(wait, HZ / 10))
1473 return -EIO;
1474
1475 err = rocker_desc_err(desc_info);
1476 if (err)
1477 return err;
1478
1479 if (process)
1480 err = process(rocker, rocker_port, desc_info, process_priv);
1481
1482 rocker_desc_gen_clear(desc_info);
1483out:
1484 rocker_wait_destroy(wait);
1485 return err;
1486}
1487
1488static int
1489rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1490 struct rocker_port *rocker_port,
1491 struct rocker_desc_info *desc_info,
1492 void *priv)
1493{
1494 struct rocker_tlv *cmd_info;
1495
1496 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1497 ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1498 return -EMSGSIZE;
1499 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1500 if (!cmd_info)
1501 return -EMSGSIZE;
1502 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1503 rocker_port->lport))
1504 return -EMSGSIZE;
1505 rocker_tlv_nest_end(desc_info, cmd_info);
1506 return 0;
1507}
1508
1509static int
1510rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1511 struct rocker_port *rocker_port,
1512 struct rocker_desc_info *desc_info,
1513 void *priv)
1514{
1515 struct ethtool_cmd *ecmd = priv;
1516 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1517 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1518 u32 speed;
1519 u8 duplex;
1520 u8 autoneg;
1521
1522 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1523 if (!attrs[ROCKER_TLV_CMD_INFO])
1524 return -EIO;
1525
1526 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1527 attrs[ROCKER_TLV_CMD_INFO]);
1528 if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1529 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1530 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1531 return -EIO;
1532
1533 speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1534 duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1535 autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1536
1537 ecmd->transceiver = XCVR_INTERNAL;
1538 ecmd->supported = SUPPORTED_TP;
1539 ecmd->phy_address = 0xff;
1540 ecmd->port = PORT_TP;
1541 ethtool_cmd_speed_set(ecmd, speed);
1542 ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1543 ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1544
1545 return 0;
1546}
1547
1548static int
1549rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1550 struct rocker_port *rocker_port,
1551 struct rocker_desc_info *desc_info,
1552 void *priv)
1553{
1554 unsigned char *macaddr = priv;
1555 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1556 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1557 struct rocker_tlv *attr;
1558
1559 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1560 if (!attrs[ROCKER_TLV_CMD_INFO])
1561 return -EIO;
1562
1563 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1564 attrs[ROCKER_TLV_CMD_INFO]);
1565 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1566 if (!attr)
1567 return -EIO;
1568
1569 if (rocker_tlv_len(attr) != ETH_ALEN)
1570 return -EINVAL;
1571
1572 ether_addr_copy(macaddr, rocker_tlv_data(attr));
1573 return 0;
1574}
1575
1576static int
1577rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1578 struct rocker_port *rocker_port,
1579 struct rocker_desc_info *desc_info,
1580 void *priv)
1581{
1582 struct ethtool_cmd *ecmd = priv;
1583 struct rocker_tlv *cmd_info;
1584
1585 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1586 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1587 return -EMSGSIZE;
1588 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1589 if (!cmd_info)
1590 return -EMSGSIZE;
1591 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1592 rocker_port->lport))
1593 return -EMSGSIZE;
1594 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1595 ethtool_cmd_speed(ecmd)))
1596 return -EMSGSIZE;
1597 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1598 ecmd->duplex))
1599 return -EMSGSIZE;
1600 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1601 ecmd->autoneg))
1602 return -EMSGSIZE;
1603 rocker_tlv_nest_end(desc_info, cmd_info);
1604 return 0;
1605}
1606
1607static int
1608rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1609 struct rocker_port *rocker_port,
1610 struct rocker_desc_info *desc_info,
1611 void *priv)
1612{
1613 unsigned char *macaddr = priv;
1614 struct rocker_tlv *cmd_info;
1615
1616 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1617 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1618 return -EMSGSIZE;
1619 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1620 if (!cmd_info)
1621 return -EMSGSIZE;
1622 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1623 rocker_port->lport))
1624 return -EMSGSIZE;
1625 if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1626 ETH_ALEN, macaddr))
1627 return -EMSGSIZE;
1628 rocker_tlv_nest_end(desc_info, cmd_info);
1629 return 0;
1630}
1631
1632static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1633 struct ethtool_cmd *ecmd)
1634{
1635 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1636 rocker_cmd_get_port_settings_prep, NULL,
1637 rocker_cmd_get_port_settings_ethtool_proc,
1638 ecmd, false);
1639}
1640
1641static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1642 unsigned char *macaddr)
1643{
1644 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1645 rocker_cmd_get_port_settings_prep, NULL,
1646 rocker_cmd_get_port_settings_macaddr_proc,
1647 macaddr, false);
1648}
1649
1650static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1651 struct ethtool_cmd *ecmd)
1652{
1653 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1654 rocker_cmd_set_port_settings_ethtool_prep,
1655 ecmd, NULL, NULL, false);
1656}
1657
1658static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1659 unsigned char *macaddr)
1660{
1661 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1662 rocker_cmd_set_port_settings_macaddr_prep,
1663 macaddr, NULL, NULL, false);
1664}
1665
9f6bbf7c
SF		 1666static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1667 struct rocker_flow_tbl_entry *entry)
1668{
1669 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1670 entry->key.ig_port.in_lport))
1671 return -EMSGSIZE;
1672 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1673 entry->key.ig_port.in_lport_mask))
1674 return -EMSGSIZE;
1675 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1676 entry->key.ig_port.goto_tbl))
1677 return -EMSGSIZE;
1678
1679 return 0;
1680}
1681
1682static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1683 struct rocker_flow_tbl_entry *entry)
1684{
1685 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1686 entry->key.vlan.in_lport))
1687 return -EMSGSIZE;
1688 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1689 entry->key.vlan.vlan_id))
1690 return -EMSGSIZE;
1691 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1692 entry->key.vlan.vlan_id_mask))
1693 return -EMSGSIZE;
1694 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1695 entry->key.vlan.goto_tbl))
1696 return -EMSGSIZE;
1697 if (entry->key.vlan.untagged &&
1698 rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1699 entry->key.vlan.new_vlan_id))
1700 return -EMSGSIZE;
1701
1702 return 0;
1703}
1704
1705static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1706 struct rocker_flow_tbl_entry *entry)
1707{
1708 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1709 entry->key.term_mac.in_lport))
1710 return -EMSGSIZE;
1711 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1712 entry->key.term_mac.in_lport_mask))
1713 return -EMSGSIZE;
1714 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1715 entry->key.term_mac.eth_type))
1716 return -EMSGSIZE;
1717 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1718 ETH_ALEN, entry->key.term_mac.eth_dst))
1719 return -EMSGSIZE;
1720 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1721 ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1722 return -EMSGSIZE;
1723 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1724 entry->key.term_mac.vlan_id))
1725 return -EMSGSIZE;
1726 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1727 entry->key.term_mac.vlan_id_mask))
1728 return -EMSGSIZE;
1729 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1730 entry->key.term_mac.goto_tbl))
1731 return -EMSGSIZE;
1732 if (entry->key.term_mac.copy_to_cpu &&
1733 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1734 entry->key.term_mac.copy_to_cpu))
1735 return -EMSGSIZE;
1736
1737 return 0;
1738}
1739
1740static int
1741rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1742 struct rocker_flow_tbl_entry *entry)
1743{
1744 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1745 entry->key.ucast_routing.eth_type))
1746 return -EMSGSIZE;
1747 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1748 entry->key.ucast_routing.dst4))
1749 return -EMSGSIZE;
1750 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1751 entry->key.ucast_routing.dst4_mask))
1752 return -EMSGSIZE;
1753 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1754 entry->key.ucast_routing.goto_tbl))
1755 return -EMSGSIZE;
1756 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1757 entry->key.ucast_routing.group_id))
1758 return -EMSGSIZE;
1759
1760 return 0;
1761}
1762
1763static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
1764 struct rocker_flow_tbl_entry *entry)
1765{
1766 if (entry->key.bridge.has_eth_dst &&
1767 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1768 ETH_ALEN, entry->key.bridge.eth_dst))
1769 return -EMSGSIZE;
1770 if (entry->key.bridge.has_eth_dst_mask &&
1771 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1772 ETH_ALEN, entry->key.bridge.eth_dst_mask))
1773 return -EMSGSIZE;
1774 if (entry->key.bridge.vlan_id &&
1775 rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1776 entry->key.bridge.vlan_id))
1777 return -EMSGSIZE;
1778 if (entry->key.bridge.tunnel_id &&
1779 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
1780 entry->key.bridge.tunnel_id))
1781 return -EMSGSIZE;
1782 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1783 entry->key.bridge.goto_tbl))
1784 return -EMSGSIZE;
1785 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1786 entry->key.bridge.group_id))
1787 return -EMSGSIZE;
1788 if (entry->key.bridge.copy_to_cpu &&
1789 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1790 entry->key.bridge.copy_to_cpu))
1791 return -EMSGSIZE;
1792
1793 return 0;
1794}
1795
1796static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
1797 struct rocker_flow_tbl_entry *entry)
1798{
1799 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1800 entry->key.acl.in_lport))
1801 return -EMSGSIZE;
1802 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1803 entry->key.acl.in_lport_mask))
1804 return -EMSGSIZE;
1805 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1806 ETH_ALEN, entry->key.acl.eth_src))
1807 return -EMSGSIZE;
1808 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
1809 ETH_ALEN, entry->key.acl.eth_src_mask))
1810 return -EMSGSIZE;
1811 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1812 ETH_ALEN, entry->key.acl.eth_dst))
1813 return -EMSGSIZE;
1814 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1815 ETH_ALEN, entry->key.acl.eth_dst_mask))
1816 return -EMSGSIZE;
1817 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1818 entry->key.acl.eth_type))
1819 return -EMSGSIZE;
1820 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1821 entry->key.acl.vlan_id))
1822 return -EMSGSIZE;
1823 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1824 entry->key.acl.vlan_id_mask))
1825 return -EMSGSIZE;
1826
1827 switch (ntohs(entry->key.acl.eth_type)) {
1828 case ETH_P_IP:
1829 case ETH_P_IPV6:
1830 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
1831 entry->key.acl.ip_proto))
1832 return -EMSGSIZE;
1833 if (rocker_tlv_put_u8(desc_info,
1834 ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
1835 entry->key.acl.ip_proto_mask))
1836 return -EMSGSIZE;
1837 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
1838 entry->key.acl.ip_tos & 0x3f))
1839 return -EMSGSIZE;
1840 if (rocker_tlv_put_u8(desc_info,
1841 ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
1842 entry->key.acl.ip_tos_mask & 0x3f))
1843 return -EMSGSIZE;
1844 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
1845 (entry->key.acl.ip_tos & 0xc0) >> 6))
1846 return -EMSGSIZE;
1847 if (rocker_tlv_put_u8(desc_info,
1848 ROCKER_TLV_OF_DPA_IP_ECN_MASK,
1849 (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
1850 return -EMSGSIZE;
1851 break;
1852 }
1853
1854 if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
1855 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1856 entry->key.acl.group_id))
1857 return -EMSGSIZE;
1858
1859 return 0;
1860}
1861
1862static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
1863 struct rocker_port *rocker_port,
1864 struct rocker_desc_info *desc_info,
1865 void *priv)
1866{
1867 struct rocker_flow_tbl_entry *entry = priv;
1868 struct rocker_tlv *cmd_info;
1869 int err = 0;
1870
1871 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1872 ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD))
1873 return -EMSGSIZE;
1874 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1875 if (!cmd_info)
1876 return -EMSGSIZE;
1877 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
1878 entry->key.tbl_id))
1879 return -EMSGSIZE;
1880 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
1881 entry->key.priority))
1882 return -EMSGSIZE;
1883 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
1884 return -EMSGSIZE;
1885 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1886 entry->cookie))
1887 return -EMSGSIZE;
1888
1889 switch (entry->key.tbl_id) {
1890 case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
1891 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
1892 break;
1893 case ROCKER_OF_DPA_TABLE_ID_VLAN:
1894 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
1895 break;
1896 case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
1897 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
1898 break;
1899 case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
1900 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
1901 break;
1902 case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
1903 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
1904 break;
1905 case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
1906 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
1907 break;
1908 default:
1909 err = -ENOTSUPP;
1910 break;
1911 }
1912
1913 if (err)
1914 return err;
1915
1916 rocker_tlv_nest_end(desc_info, cmd_info);
1917
1918 return 0;
1919}
1920
1921static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
1922 struct rocker_port *rocker_port,
1923 struct rocker_desc_info *desc_info,
1924 void *priv)
1925{
1926 const struct rocker_flow_tbl_entry *entry = priv;
1927 struct rocker_tlv *cmd_info;
1928
1929 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1930 ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL))
1931 return -EMSGSIZE;
1932 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1933 if (!cmd_info)
1934 return -EMSGSIZE;
1935 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1936 entry->cookie))
1937 return -EMSGSIZE;
1938 rocker_tlv_nest_end(desc_info, cmd_info);
1939
1940 return 0;
1941}
1942
1943static int
1944rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
1945 struct rocker_group_tbl_entry *entry)
1946{
1947 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_LPORT,
1948 ROCKER_GROUP_PORT_GET(entry->group_id)))
1949 return -EMSGSIZE;
1950 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
1951 entry->l2_interface.pop_vlan))
1952 return -EMSGSIZE;
1953
1954 return 0;
1955}
1956
1957static int
1958rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
1959 struct rocker_group_tbl_entry *entry)
1960{
1961 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
1962 entry->l2_rewrite.group_id))
1963 return -EMSGSIZE;
1964 if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
1965 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1966 ETH_ALEN, entry->l2_rewrite.eth_src))
1967 return -EMSGSIZE;
1968 if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
1969 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1970 ETH_ALEN, entry->l2_rewrite.eth_dst))
1971 return -EMSGSIZE;
1972 if (entry->l2_rewrite.vlan_id &&
1973 rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1974 entry->l2_rewrite.vlan_id))
1975 return -EMSGSIZE;
1976
1977 return 0;
1978}
1979
1980static int
1981rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
1982 struct rocker_group_tbl_entry *entry)
1983{
1984 int i;
1985 struct rocker_tlv *group_ids;
1986
1987 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
1988 entry->group_count))
1989 return -EMSGSIZE;
1990
1991 group_ids = rocker_tlv_nest_start(desc_info,
1992 ROCKER_TLV_OF_DPA_GROUP_IDS);
1993 if (!group_ids)
1994 return -EMSGSIZE;
1995
1996 for (i = 0; i < entry->group_count; i++)
1997 /* Note TLV array is 1-based */
1998 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
1999 return -EMSGSIZE;
2000
2001 rocker_tlv_nest_end(desc_info, group_ids);
2002
2003 return 0;
2004}
2005
2006static int
2007rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2008 struct rocker_group_tbl_entry *entry)
2009{
2010 if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2011 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2012 ETH_ALEN, entry->l3_unicast.eth_src))
2013 return -EMSGSIZE;
2014 if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2015 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2016 ETH_ALEN, entry->l3_unicast.eth_dst))
2017 return -EMSGSIZE;
2018 if (entry->l3_unicast.vlan_id &&
2019 rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2020 entry->l3_unicast.vlan_id))
2021 return -EMSGSIZE;
2022 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2023 entry->l3_unicast.ttl_check))
2024 return -EMSGSIZE;
2025 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2026 entry->l3_unicast.group_id))
2027 return -EMSGSIZE;
2028
2029 return 0;
2030}
2031
2032static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2033 struct rocker_port *rocker_port,
2034 struct rocker_desc_info *desc_info,
2035 void *priv)
2036{
2037 struct rocker_group_tbl_entry *entry = priv;
2038 struct rocker_tlv *cmd_info;
2039 int err = 0;
2040
2041 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2042 return -EMSGSIZE;
2043 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2044 if (!cmd_info)
2045 return -EMSGSIZE;
2046
2047 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2048 entry->group_id))
2049 return -EMSGSIZE;
2050
2051 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2052 case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2053 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2054 break;
2055 case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2056 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2057 break;
2058 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2059 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2060 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2061 break;
2062 case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2063 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2064 break;
2065 default:
2066 err = -ENOTSUPP;
2067 break;
2068 }
2069
2070 if (err)
2071 return err;
2072
2073 rocker_tlv_nest_end(desc_info, cmd_info);
2074
2075 return 0;
2076}
2077
2078static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2079 struct rocker_port *rocker_port,
2080 struct rocker_desc_info *desc_info,
2081 void *priv)
2082{
2083 const struct rocker_group_tbl_entry *entry = priv;
2084 struct rocker_tlv *cmd_info;
2085
2086 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2087 return -EMSGSIZE;
2088 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2089 if (!cmd_info)
2090 return -EMSGSIZE;
2091 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2092 entry->group_id))
2093 return -EMSGSIZE;
2094 rocker_tlv_nest_end(desc_info, cmd_info);
2095
2096 return 0;
2097}
2098
2099/*****************************************
2100 * Flow, group, FDB, internal VLAN tables
2101 *****************************************/
2102
2103static int rocker_init_tbls(struct rocker *rocker)
2104{
2105 hash_init(rocker->flow_tbl);
2106 spin_lock_init(&rocker->flow_tbl_lock);
2107
2108 hash_init(rocker->group_tbl);
2109 spin_lock_init(&rocker->group_tbl_lock);
2110
2111 hash_init(rocker->fdb_tbl);
2112 spin_lock_init(&rocker->fdb_tbl_lock);
2113
2114 hash_init(rocker->internal_vlan_tbl);
2115 spin_lock_init(&rocker->internal_vlan_tbl_lock);
2116
2117 return 0;
2118}
2119
2120static void rocker_free_tbls(struct rocker *rocker)
2121{
2122 unsigned long flags;
2123 struct rocker_flow_tbl_entry *flow_entry;
2124 struct rocker_group_tbl_entry *group_entry;
2125 struct rocker_fdb_tbl_entry *fdb_entry;
2126 struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2127 struct hlist_node *tmp;
2128 int bkt;
2129
2130 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2131 hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2132 hash_del(&flow_entry->entry);
2133 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2134
2135 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2136 hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2137 hash_del(&group_entry->entry);
2138 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2139
2140 spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2141 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2142 hash_del(&fdb_entry->entry);
2143 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2144
2145 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2146 hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2147 tmp, internal_vlan_entry, entry)
2148 hash_del(&internal_vlan_entry->entry);
2149 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2150}
2151
2152static struct rocker_flow_tbl_entry *
2153rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2154{
2155 struct rocker_flow_tbl_entry *found;
2156
2157 hash_for_each_possible(rocker->flow_tbl, found,
2158 entry, match->key_crc32) {
2159 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
2160 return found;
2161 }
2162
2163 return NULL;
2164}
2165
2166static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2167 struct rocker_flow_tbl_entry *match,
2168 bool nowait)
2169{
2170 struct rocker *rocker = rocker_port->rocker;
2171 struct rocker_flow_tbl_entry *found;
2172 unsigned long flags;
2173 bool add_to_hw = false;
2174 int err = 0;
2175
2176 match->key_crc32 = crc32(~0, &match->key, sizeof(match->key));
2177
2178 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2179
2180 found = rocker_flow_tbl_find(rocker, match);
2181
2182 if (found) {
2183 kfree(match);
2184 } else {
2185 found = match;
2186 found->cookie = rocker->flow_tbl_next_cookie++;
2187 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2188 add_to_hw = true;
2189 }
2190
2191 found->ref_count++;
2192
2193 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2194
2195 if (add_to_hw) {
2196 err = rocker_cmd_exec(rocker, rocker_port,
2197 rocker_cmd_flow_tbl_add,
2198 found, NULL, NULL, nowait);
2199 if (err) {
2200 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2201 hash_del(&found->entry);
2202 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2203 kfree(found);
2204 }
2205 }
2206
2207 return err;
2208}
2209
2210static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2211 struct rocker_flow_tbl_entry *match,
2212 bool nowait)
2213{
2214 struct rocker *rocker = rocker_port->rocker;
2215 struct rocker_flow_tbl_entry *found;
2216 unsigned long flags;
2217 bool del_from_hw = false;
2218 int err = 0;
2219
2220 match->key_crc32 = crc32(~0, &match->key, sizeof(match->key));
2221
2222 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2223
2224 found = rocker_flow_tbl_find(rocker, match);
2225
2226 if (found) {
2227 found->ref_count--;
2228 if (found->ref_count == 0) {
2229 hash_del(&found->entry);
2230 del_from_hw = true;
2231 }
2232 }
2233
2234 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2235
2236 kfree(match);
2237
2238 if (del_from_hw) {
2239 err = rocker_cmd_exec(rocker, rocker_port,
2240 rocker_cmd_flow_tbl_del,
2241 found, NULL, NULL, nowait);
2242 kfree(found);
2243 }
2244
2245 return err;
2246}
2247
2248static gfp_t rocker_op_flags_gfp(int flags)
2249{
2250 return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL;
2251}
2252
2253static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2254 int flags, struct rocker_flow_tbl_entry *entry)
2255{
2256 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2257
2258 if (flags & ROCKER_OP_FLAG_REMOVE)
2259 return rocker_flow_tbl_del(rocker_port, entry, nowait);
2260 else
2261 return rocker_flow_tbl_add(rocker_port, entry, nowait);
2262}
2263
2264static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2265 int flags, u32 in_lport, u32 in_lport_mask,
2266 enum rocker_of_dpa_table_id goto_tbl)
2267{
2268 struct rocker_flow_tbl_entry *entry;
2269
2270 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2271 if (!entry)
2272 return -ENOMEM;
2273
2274 entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2275 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2276 entry->key.ig_port.in_lport = in_lport;
2277 entry->key.ig_port.in_lport_mask = in_lport_mask;
2278 entry->key.ig_port.goto_tbl = goto_tbl;
2279
2280 return rocker_flow_tbl_do(rocker_port, flags, entry);
2281}
2282
2283static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2284 int flags, u32 in_lport,
2285 __be16 vlan_id, __be16 vlan_id_mask,
2286 enum rocker_of_dpa_table_id goto_tbl,
2287 bool untagged, __be16 new_vlan_id)
2288{
2289 struct rocker_flow_tbl_entry *entry;
2290
2291 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2292 if (!entry)
2293 return -ENOMEM;
2294
2295 entry->key.priority = ROCKER_PRIORITY_VLAN;
2296 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2297 entry->key.vlan.in_lport = in_lport;
2298 entry->key.vlan.vlan_id = vlan_id;
2299 entry->key.vlan.vlan_id_mask = vlan_id_mask;
2300 entry->key.vlan.goto_tbl = goto_tbl;
2301
2302 entry->key.vlan.untagged = untagged;
2303 entry->key.vlan.new_vlan_id = new_vlan_id;
2304
2305 return rocker_flow_tbl_do(rocker_port, flags, entry);
2306}
2307
2308static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2309 u32 in_lport, u32 in_lport_mask,
2310 __be16 eth_type, const u8 *eth_dst,
2311 const u8 *eth_dst_mask, __be16 vlan_id,
2312 __be16 vlan_id_mask, bool copy_to_cpu,
2313 int flags)
2314{
2315 struct rocker_flow_tbl_entry *entry;
2316
2317 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2318 if (!entry)
2319 return -ENOMEM;
2320
2321 if (is_multicast_ether_addr(eth_dst)) {
2322 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2323 entry->key.term_mac.goto_tbl =
2324 ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2325 } else {
2326 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2327 entry->key.term_mac.goto_tbl =
2328 ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2329 }
2330
2331 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2332 entry->key.term_mac.in_lport = in_lport;
2333 entry->key.term_mac.in_lport_mask = in_lport_mask;
2334 entry->key.term_mac.eth_type = eth_type;
2335 ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2336 ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2337 entry->key.term_mac.vlan_id = vlan_id;
2338 entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2339 entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2340
2341 return rocker_flow_tbl_do(rocker_port, flags, entry);
2342}
2343
2344static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2345 int flags,
2346 const u8 *eth_dst, const u8 *eth_dst_mask,
2347 __be16 vlan_id, u32 tunnel_id,
2348 enum rocker_of_dpa_table_id goto_tbl,
2349 u32 group_id, bool copy_to_cpu)
2350{
2351 struct rocker_flow_tbl_entry *entry;
2352 u32 priority;
2353 bool vlan_bridging = !!vlan_id;
2354 bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2355 bool wild = false;
2356
2357 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2358 if (!entry)
2359 return -ENOMEM;
2360
2361 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2362
2363 if (eth_dst) {
2364 entry->key.bridge.has_eth_dst = 1;
2365 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2366 }
2367 if (eth_dst_mask) {
2368 entry->key.bridge.has_eth_dst_mask = 1;
2369 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2370 if (memcmp(eth_dst_mask, ff_mac, ETH_ALEN))
2371 wild = true;
2372 }
2373
2374 priority = ROCKER_PRIORITY_UNKNOWN;
2375 if (vlan_bridging & dflt & wild)
2376 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2377 else if (vlan_bridging & dflt & !wild)
2378 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2379 else if (vlan_bridging & !dflt)
2380 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2381 else if (!vlan_bridging & dflt & wild)
2382 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2383 else if (!vlan_bridging & dflt & !wild)
2384 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2385 else if (!vlan_bridging & !dflt)
2386 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2387
2388 entry->key.priority = priority;
2389 entry->key.bridge.vlan_id = vlan_id;
2390 entry->key.bridge.tunnel_id = tunnel_id;
2391 entry->key.bridge.goto_tbl = goto_tbl;
2392 entry->key.bridge.group_id = group_id;
2393 entry->key.bridge.copy_to_cpu = copy_to_cpu;
2394
2395 return rocker_flow_tbl_do(rocker_port, flags, entry);
2396}
2397
2398static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2399 int flags, u32 in_lport,
2400 u32 in_lport_mask,
2401 const u8 *eth_src, const u8 *eth_src_mask,
2402 const u8 *eth_dst, const u8 *eth_dst_mask,
2403 __be16 eth_type,
2404 __be16 vlan_id, __be16 vlan_id_mask,
2405 u8 ip_proto, u8 ip_proto_mask,
2406 u8 ip_tos, u8 ip_tos_mask,
2407 u32 group_id)
2408{
2409 u32 priority;
2410 struct rocker_flow_tbl_entry *entry;
2411
2412 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2413 if (!entry)
2414 return -ENOMEM;
2415
2416 priority = ROCKER_PRIORITY_ACL_NORMAL;
2417 if (eth_dst && eth_dst_mask) {
2418 if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0)
2419 priority = ROCKER_PRIORITY_ACL_DFLT;
2420 else if (is_link_local_ether_addr(eth_dst))
2421 priority = ROCKER_PRIORITY_ACL_CTRL;
2422 }
2423
2424 entry->key.priority = priority;
2425 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2426 entry->key.acl.in_lport = in_lport;
2427 entry->key.acl.in_lport_mask = in_lport_mask;
2428
2429 if (eth_src)
2430 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2431 if (eth_src_mask)
2432 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2433 if (eth_dst)
2434 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2435 if (eth_dst_mask)
2436 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2437
2438 entry->key.acl.eth_type = eth_type;
2439 entry->key.acl.vlan_id = vlan_id;
2440 entry->key.acl.vlan_id_mask = vlan_id_mask;
2441 entry->key.acl.ip_proto = ip_proto;
2442 entry->key.acl.ip_proto_mask = ip_proto_mask;
2443 entry->key.acl.ip_tos = ip_tos;
2444 entry->key.acl.ip_tos_mask = ip_tos_mask;
2445 entry->key.acl.group_id = group_id;
2446
2447 return rocker_flow_tbl_do(rocker_port, flags, entry);
2448}
2449
2450static struct rocker_group_tbl_entry *
2451rocker_group_tbl_find(struct rocker *rocker,
2452 struct rocker_group_tbl_entry *match)
2453{
2454 struct rocker_group_tbl_entry *found;
2455
2456 hash_for_each_possible(rocker->group_tbl, found,
2457 entry, match->group_id) {
2458 if (found->group_id == match->group_id)
2459 return found;
2460 }
2461
2462 return NULL;
2463}
2464
2465static void rocker_group_tbl_entry_free(struct rocker_group_tbl_entry *entry)
2466{
2467 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2468 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2469 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2470 kfree(entry->group_ids);
2471 break;
2472 default:
2473 break;
2474 }
2475 kfree(entry);
2476}
2477
2478static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2479 struct rocker_group_tbl_entry *match,
2480 bool nowait)
2481{
2482 struct rocker *rocker = rocker_port->rocker;
2483 struct rocker_group_tbl_entry *found;
2484 unsigned long flags;
2485 int err = 0;
2486
2487 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2488
2489 found = rocker_group_tbl_find(rocker, match);
2490
2491 if (found) {
2492 hash_del(&found->entry);
2493 rocker_group_tbl_entry_free(found);
2494 found = match;
2495 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2496 } else {
2497 found = match;
2498 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2499 }
2500
2501 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2502
2503 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2504
2505 if (found->cmd)
2506 err = rocker_cmd_exec(rocker, rocker_port,
2507 rocker_cmd_group_tbl_add,
2508 found, NULL, NULL, nowait);
2509
2510 return err;
2511}
2512
2513static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2514 struct rocker_group_tbl_entry *match,
2515 bool nowait)
2516{
2517 struct rocker *rocker = rocker_port->rocker;
2518 struct rocker_group_tbl_entry *found;
2519 unsigned long flags;
2520 int err = 0;
2521
2522 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2523
2524 found = rocker_group_tbl_find(rocker, match);
2525
2526 if (found) {
2527 hash_del(&found->entry);
2528 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2529 }
2530
2531 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2532
2533 rocker_group_tbl_entry_free(match);
2534
2535 if (found) {
2536 err = rocker_cmd_exec(rocker, rocker_port,
2537 rocker_cmd_group_tbl_del,
2538 found, NULL, NULL, nowait);
2539 rocker_group_tbl_entry_free(found);
2540 }
2541
2542 return err;
2543}
2544
2545static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2546 int flags, struct rocker_group_tbl_entry *entry)
2547{
2548 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2549
2550 if (flags & ROCKER_OP_FLAG_REMOVE)
2551 return rocker_group_tbl_del(rocker_port, entry, nowait);
2552 else
2553 return rocker_group_tbl_add(rocker_port, entry, nowait);
2554}
2555
2556static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2557 int flags, __be16 vlan_id,
2558 u32 out_lport, int pop_vlan)
2559{
2560 struct rocker_group_tbl_entry *entry;
2561
2562 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2563 if (!entry)
2564 return -ENOMEM;
2565
2566 entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
2567 entry->l2_interface.pop_vlan = pop_vlan;
2568
2569 return rocker_group_tbl_do(rocker_port, flags, entry);
2570}
2571
2572static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2573 int flags, u8 group_count,
2574 u32 *group_ids, u32 group_id)
2575{
2576 struct rocker_group_tbl_entry *entry;
2577
2578 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2579 if (!entry)
2580 return -ENOMEM;
2581
2582 entry->group_id = group_id;
2583 entry->group_count = group_count;
2584
2585 entry->group_ids = kcalloc(group_count, sizeof(u32),
2586 rocker_op_flags_gfp(flags));
2587 if (!entry->group_ids) {
2588 kfree(entry);
2589 return -ENOMEM;
2590 }
2591 memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2592
2593 return rocker_group_tbl_do(rocker_port, flags, entry);
2594}
2595
2596static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2597 int flags, __be16 vlan_id,
2598 u8 group_count, u32 *group_ids,
2599 u32 group_id)
2600{
2601 return rocker_group_l2_fan_out(rocker_port, flags,
2602 group_count, group_ids,
2603 group_id);
2604}
2605
6c707945
SF		 2606static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
2607 int flags, __be16 vlan_id)
2608{
2609 struct rocker_port *p;
2610 struct rocker *rocker = rocker_port->rocker;
2611 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2612 u32 group_ids[rocker->port_count];
2613 u8 group_count = 0;
2614 int err;
2615 int i;
2616
2617 /* Adjust the flood group for this VLAN. The flood group
2618 * references an L2 interface group for each port in this
2619 * VLAN.
2620 */
2621
2622 for (i = 0; i < rocker->port_count; i++) {
2623 p = rocker->ports[i];
2624 if (!rocker_port_is_bridged(p))
2625 continue;
2626 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
2627 group_ids[group_count++] =
2628 ROCKER_GROUP_L2_INTERFACE(vlan_id,
2629 p->lport);
2630 }
2631 }
2632
2633 /* If there are no bridged ports in this VLAN, we're done */
2634 if (group_count == 0)
2635 return 0;
2636
2637 err = rocker_group_l2_flood(rocker_port, flags, vlan_id,
2638 group_count, group_ids,
2639 group_id);
2640 if (err)
2641 netdev_err(rocker_port->dev,
2642 "Error (%d) port VLAN l2 flood group\n", err);
2643
2644 return err;
2645}
2646
2647static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
2648 int flags, __be16 vlan_id,
2649 bool pop_vlan)
2650{
2651 struct rocker *rocker = rocker_port->rocker;
2652 struct rocker_port *p;
2653 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2654 u32 out_lport;
2655 int ref = 0;
2656 int err;
2657 int i;
2658
2659 /* An L2 interface group for this port in this VLAN, but
2660 * only when port STP state is LEARNING|FORWARDING.
2661 */
2662
2663 if (rocker_port->stp_state == BR_STATE_LEARNING ||
2664 rocker_port->stp_state == BR_STATE_FORWARDING) {
2665 out_lport = rocker_port->lport;
2666 err = rocker_group_l2_interface(rocker_port, flags,
2667 vlan_id, out_lport,
2668 pop_vlan);
2669 if (err) {
2670 netdev_err(rocker_port->dev,
2671 "Error (%d) port VLAN l2 group for lport %d\n",
2672 err, out_lport);
2673 return err;
2674 }
2675 }
2676
2677 /* An L2 interface group for this VLAN to CPU port.
2678 * Add when first port joins this VLAN and destroy when
2679 * last port leaves this VLAN.
2680 */
2681
2682 for (i = 0; i < rocker->port_count; i++) {
2683 p = rocker->ports[i];
2684 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
2685 ref++;
2686 }
2687
2688 if ((!adding || ref != 1) && (adding || ref != 0))
2689 return 0;
2690
2691 out_lport = 0;
2692 err = rocker_group_l2_interface(rocker_port, flags,
2693 vlan_id, out_lport,
2694 pop_vlan);
2695 if (err) {
2696 netdev_err(rocker_port->dev,
2697 "Error (%d) port VLAN l2 group for CPU port\n", err);
2698 return err;
2699 }
2700
2701 return 0;
2702}
2703
9f6bbf7c
SF		 2704static struct rocker_ctrl {
2705 const u8 *eth_dst;
2706 const u8 *eth_dst_mask;
2707 u16 eth_type;
2708 bool acl;
2709 bool bridge;
2710 bool term;
2711 bool copy_to_cpu;
2712} rocker_ctrls[] = {
2713 [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
2714 /* pass link local multicast pkts up to CPU for filtering */
2715 .eth_dst = ll_mac,
2716 .eth_dst_mask = ll_mask,
2717 .acl = true,
2718 },
2719 [ROCKER_CTRL_LOCAL_ARP] = {
2720 /* pass local ARP pkts up to CPU */
2721 .eth_dst = zero_mac,
2722 .eth_dst_mask = zero_mac,
2723 .eth_type = htons(ETH_P_ARP),
2724 .acl = true,
2725 },
2726 [ROCKER_CTRL_IPV4_MCAST] = {
2727 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
2728 .eth_dst = ipv4_mcast,
2729 .eth_dst_mask = ipv4_mask,
2730 .eth_type = htons(ETH_P_IP),
2731 .term = true,
2732 .copy_to_cpu = true,
2733 },
2734 [ROCKER_CTRL_IPV6_MCAST] = {
2735 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
2736 .eth_dst = ipv6_mcast,
2737 .eth_dst_mask = ipv6_mask,
2738 .eth_type = htons(ETH_P_IPV6),
2739 .term = true,
2740 .copy_to_cpu = true,
2741 },
2742 [ROCKER_CTRL_DFLT_BRIDGING] = {
2743 /* flood any pkts on vlan */
2744 .bridge = true,
2745 .copy_to_cpu = true,
2746 },
2747};
2748
2749static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
2750 int flags, struct rocker_ctrl *ctrl,
2751 __be16 vlan_id)
2752{
2753 u32 in_lport = rocker_port->lport;
2754 u32 in_lport_mask = 0xffffffff;
2755 u32 out_lport = 0;
2756 u8 *eth_src = NULL;
2757 u8 *eth_src_mask = NULL;
2758 __be16 vlan_id_mask = htons(0xffff);
2759 u8 ip_proto = 0;
2760 u8 ip_proto_mask = 0;
2761 u8 ip_tos = 0;
2762 u8 ip_tos_mask = 0;
2763 u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
2764 int err;
2765
2766 err = rocker_flow_tbl_acl(rocker_port, flags,
2767 in_lport, in_lport_mask,
2768 eth_src, eth_src_mask,
2769 ctrl->eth_dst, ctrl->eth_dst_mask,
2770 ctrl->eth_type,
2771 vlan_id, vlan_id_mask,
2772 ip_proto, ip_proto_mask,
2773 ip_tos, ip_tos_mask,
2774 group_id);
2775
2776 if (err)
2777 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
2778
2779 return err;
2780}
2781
6c707945
SF		 2782static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
2783 int flags, struct rocker_ctrl *ctrl,
2784 __be16 vlan_id)
2785{
2786 enum rocker_of_dpa_table_id goto_tbl =
2787 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2788 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2789 u32 tunnel_id = 0;
2790 int err;
2791
2792 if (!rocker_port_is_bridged(rocker_port))
2793 return 0;
2794
2795 err = rocker_flow_tbl_bridge(rocker_port, flags,
2796 ctrl->eth_dst, ctrl->eth_dst_mask,
2797 vlan_id, tunnel_id,
2798 goto_tbl, group_id, ctrl->copy_to_cpu);
2799
2800 if (err)
2801 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
2802
2803 return err;
2804}
2805
9f6bbf7c
SF		 2806static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
2807 int flags, struct rocker_ctrl *ctrl,
2808 __be16 vlan_id)
2809{
2810 u32 in_lport_mask = 0xffffffff;
2811 __be16 vlan_id_mask = htons(0xffff);
2812 int err;
2813
2814 if (ntohs(vlan_id) == 0)
2815 vlan_id = rocker_port->internal_vlan_id;
2816
2817 err = rocker_flow_tbl_term_mac(rocker_port,
2818 rocker_port->lport, in_lport_mask,
2819 ctrl->eth_type, ctrl->eth_dst,
2820 ctrl->eth_dst_mask, vlan_id,
2821 vlan_id_mask, ctrl->copy_to_cpu,
2822 flags);
2823
2824 if (err)
2825 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
2826
2827 return err;
2828}
2829
2830static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, int flags,
2831 struct rocker_ctrl *ctrl, __be16 vlan_id)
2832{
2833 if (ctrl->acl)
2834 return rocker_port_ctrl_vlan_acl(rocker_port, flags,
2835 ctrl, vlan_id);
6c707945
SF		 2836 if (ctrl->bridge)
2837 return rocker_port_ctrl_vlan_bridge(rocker_port, flags,
2838 ctrl, vlan_id);
9f6bbf7c
SF		 2839
2840 if (ctrl->term)
2841 return rocker_port_ctrl_vlan_term(rocker_port, flags,
2842 ctrl, vlan_id);
2843
2844 return -EOPNOTSUPP;
2845}
2846
2847static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
2848 int flags, __be16 vlan_id)
2849{
2850 int err = 0;
2851 int i;
2852
2853 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
2854 if (rocker_port->ctrls[i]) {
2855 err = rocker_port_ctrl_vlan(rocker_port, flags,
2856 &rocker_ctrls[i], vlan_id);
2857 if (err)
2858 return err;
2859 }
2860 }
2861
2862 return err;
2863}
2864
2865static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags,
2866 struct rocker_ctrl *ctrl)
2867{
2868 u16 vid;
2869 int err = 0;
2870
2871 for (vid = 1; vid < VLAN_N_VID; vid++) {
2872 if (!test_bit(vid, rocker_port->vlan_bitmap))
2873 continue;
2874 err = rocker_port_ctrl_vlan(rocker_port, flags,
2875 ctrl, htons(vid));
2876 if (err)
2877 break;
2878 }
2879
2880 return err;
2881}
2882
6c707945
SF		 2883static int rocker_port_vlan(struct rocker_port *rocker_port, int flags,
2884 u16 vid)
2885{
2886 enum rocker_of_dpa_table_id goto_tbl =
2887 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2888 u32 in_lport = rocker_port->lport;
2889 __be16 vlan_id = htons(vid);
2890 __be16 vlan_id_mask = htons(0xffff);
2891 __be16 internal_vlan_id;
2892 bool untagged;
2893 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2894 int err;
2895
2896 internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
2897
2898 if (adding && test_and_set_bit(ntohs(internal_vlan_id),
2899 rocker_port->vlan_bitmap))
2900 return 0; /* already added */
2901 else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id),
2902 rocker_port->vlan_bitmap))
2903 return 0; /* already removed */
2904
2905 if (adding) {
2906 err = rocker_port_ctrl_vlan_add(rocker_port, flags,
2907 internal_vlan_id);
2908 if (err) {
2909 netdev_err(rocker_port->dev,
2910 "Error (%d) port ctrl vlan add\n", err);
2911 return err;
2912 }
2913 }
2914
2915 err = rocker_port_vlan_l2_groups(rocker_port, flags,
2916 internal_vlan_id, untagged);
2917 if (err) {
2918 netdev_err(rocker_port->dev,
2919 "Error (%d) port VLAN l2 groups\n", err);
2920 return err;
2921 }
2922
2923 err = rocker_port_vlan_flood_group(rocker_port, flags,
2924 internal_vlan_id);
2925 if (err) {
2926 netdev_err(rocker_port->dev,
2927 "Error (%d) port VLAN l2 flood group\n", err);
2928 return err;
2929 }
2930
2931 err = rocker_flow_tbl_vlan(rocker_port, flags,
2932 in_lport, vlan_id, vlan_id_mask,
2933 goto_tbl, untagged, internal_vlan_id);
2934 if (err)
2935 netdev_err(rocker_port->dev,
2936 "Error (%d) port VLAN table\n", err);
2937
2938 return err;
2939}
2940
9f6bbf7c
SF		 2941static int rocker_port_ig_tbl(struct rocker_port *rocker_port, int flags)
2942{
2943 enum rocker_of_dpa_table_id goto_tbl;
2944 u32 in_lport;
2945 u32 in_lport_mask;
2946 int err;
2947
2948 /* Normal Ethernet Frames. Matches pkts from any local physical
2949 * ports. Goto VLAN tbl.
2950 */
2951
2952 in_lport = 0;
2953 in_lport_mask = 0xffff0000;
2954 goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
2955
2956 err = rocker_flow_tbl_ig_port(rocker_port, flags,
2957 in_lport, in_lport_mask,
2958 goto_tbl);
2959 if (err)
2960 netdev_err(rocker_port->dev,
2961 "Error (%d) ingress port table entry\n", err);
2962
2963 return err;
2964}
2965
6c707945
SF		 2966struct rocker_fdb_learn_work {
2967 struct work_struct work;
2968 struct net_device *dev;
2969 int flags;
2970 u8 addr[ETH_ALEN];
2971 u16 vid;
2972};
2973
2974static void rocker_port_fdb_learn_work(struct work_struct *work)
2975{
2976 struct rocker_fdb_learn_work *lw =
2977 container_of(work, struct rocker_fdb_learn_work, work);
2978 bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
2979 bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
2980
2981 if (learned & removing)
2982 br_fdb_external_learn_del(lw->dev, lw->addr, lw->vid);
2983 else if (learned & !removing)
2984 br_fdb_external_learn_add(lw->dev, lw->addr, lw->vid);
2985
2986 kfree(work);
2987}
2988
2989static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
2990 int flags, const u8 *addr, __be16 vlan_id)
2991{
2992 struct rocker_fdb_learn_work *lw;
2993 enum rocker_of_dpa_table_id goto_tbl =
2994 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2995 u32 out_lport = rocker_port->lport;
2996 u32 tunnel_id = 0;
2997 u32 group_id = ROCKER_GROUP_NONE;
2998 bool copy_to_cpu = false;
2999 int err;
3000
3001 if (rocker_port_is_bridged(rocker_port))
3002 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
3003
3004 if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3005 err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL,
3006 vlan_id, tunnel_id, goto_tbl,
3007 group_id, copy_to_cpu);
3008 if (err)
3009 return err;
3010 }
3011
3012 if (!rocker_port_is_bridged(rocker_port))
3013 return 0;
3014
3015 lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags));
3016 if (!lw)
3017 return -ENOMEM;
3018
3019 INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3020
3021 lw->dev = rocker_port->dev;
3022 lw->flags = flags;
3023 ether_addr_copy(lw->addr, addr);
3024 lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3025
3026 schedule_work(&lw->work);
3027
3028 return 0;
3029}
3030
3031static struct rocker_fdb_tbl_entry *
3032rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3033{
3034 struct rocker_fdb_tbl_entry *found;
3035
3036 hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3037 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3038 return found;
3039
3040 return NULL;
3041}
3042
3043static int rocker_port_fdb(struct rocker_port *rocker_port,
3044 const unsigned char *addr,
3045 __be16 vlan_id, int flags)
3046{
3047 struct rocker *rocker = rocker_port->rocker;
3048 struct rocker_fdb_tbl_entry *fdb;
3049 struct rocker_fdb_tbl_entry *found;
3050 bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3051 unsigned long lock_flags;
3052
3053 fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags));
3054 if (!fdb)
3055 return -ENOMEM;
3056
3057 fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3058 fdb->key.lport = rocker_port->lport;
3059 ether_addr_copy(fdb->key.addr, addr);
3060 fdb->key.vlan_id = vlan_id;
3061 fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3062
3063 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3064
3065 found = rocker_fdb_tbl_find(rocker, fdb);
3066
3067 if (removing && found) {
3068 kfree(fdb);
3069 hash_del(&found->entry);
3070 } else if (!removing && !found) {
3071 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3072 }
3073
3074 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3075
3076 /* Check if adding and already exists, or removing and can't find */
3077 if (!found != !removing) {
3078 kfree(fdb);
3079 if (!found && removing)
3080 return 0;
3081 /* Refreshing existing to update aging timers */
3082 flags |= ROCKER_OP_FLAG_REFRESH;
3083 }
3084
3085 return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id);
3086}
3087
3088static int rocker_port_fdb_flush(struct rocker_port *rocker_port)
3089{
3090 struct rocker *rocker = rocker_port->rocker;
3091 struct rocker_fdb_tbl_entry *found;
3092 unsigned long lock_flags;
3093 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3094 struct hlist_node *tmp;
3095 int bkt;
3096 int err = 0;
3097
3098 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3099 rocker_port->stp_state == BR_STATE_FORWARDING)
3100 return 0;
3101
3102 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3103
3104 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3105 if (found->key.lport != rocker_port->lport)
3106 continue;
3107 if (!found->learned)
3108 continue;
3109 err = rocker_port_fdb_learn(rocker_port, flags,
3110 found->key.addr,
3111 found->key.vlan_id);
3112 if (err)
3113 goto err_out;
3114 hash_del(&found->entry);
3115 }
3116
3117err_out:
3118 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3119
3120 return err;
3121}
3122
9f6bbf7c
SF		 3123static int rocker_port_router_mac(struct rocker_port *rocker_port,
3124 int flags, __be16 vlan_id)
3125{
3126 u32 in_lport_mask = 0xffffffff;
3127 __be16 eth_type;
3128 const u8 *dst_mac_mask = ff_mac;
3129 __be16 vlan_id_mask = htons(0xffff);
3130 bool copy_to_cpu = false;
3131 int err;
3132
3133 if (ntohs(vlan_id) == 0)
3134 vlan_id = rocker_port->internal_vlan_id;
3135
3136 eth_type = htons(ETH_P_IP);
3137 err = rocker_flow_tbl_term_mac(rocker_port,
3138 rocker_port->lport, in_lport_mask,
3139 eth_type, rocker_port->dev->dev_addr,
3140 dst_mac_mask, vlan_id, vlan_id_mask,
3141 copy_to_cpu, flags);
3142 if (err)
3143 return err;
3144
3145 eth_type = htons(ETH_P_IPV6);
3146 err = rocker_flow_tbl_term_mac(rocker_port,
3147 rocker_port->lport, in_lport_mask,
3148 eth_type, rocker_port->dev->dev_addr,
3149 dst_mac_mask, vlan_id, vlan_id_mask,
3150 copy_to_cpu, flags);
3151
3152 return err;
3153}
3154
6c707945
SF		 3155static int rocker_port_fwding(struct rocker_port *rocker_port)
3156{
3157 bool pop_vlan;
3158 u32 out_lport;
3159 __be16 vlan_id;
3160 u16 vid;
3161 int flags = ROCKER_OP_FLAG_NOWAIT;
3162 int err;
3163
3164 /* Port will be forwarding-enabled if its STP state is LEARNING
3165 * or FORWARDING. Traffic from CPU can still egress, regardless of
3166 * port STP state. Use L2 interface group on port VLANs as a way
3167 * to toggle port forwarding: if forwarding is disabled, L2
3168 * interface group will not exist.
3169 */
3170
3171 if (rocker_port->stp_state != BR_STATE_LEARNING &&
3172 rocker_port->stp_state != BR_STATE_FORWARDING)
3173 flags |= ROCKER_OP_FLAG_REMOVE;
3174
3175 out_lport = rocker_port->lport;
3176 for (vid = 1; vid < VLAN_N_VID; vid++) {
3177 if (!test_bit(vid, rocker_port->vlan_bitmap))
3178 continue;
3179 vlan_id = htons(vid);
3180 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3181 err = rocker_group_l2_interface(rocker_port, flags,
3182 vlan_id, out_lport,
3183 pop_vlan);
3184 if (err) {
3185 netdev_err(rocker_port->dev,
3186 "Error (%d) port VLAN l2 group for lport %d\n",
3187 err, out_lport);
3188 return err;
3189 }
3190 }
3191
3192 return 0;
3193}
3194
3195static int rocker_port_stp_update(struct rocker_port *rocker_port, u8 state)
3196{
3197 bool want[ROCKER_CTRL_MAX] = { 0, };
3198 int flags;
3199 int err;
3200 int i;
3201
3202 if (rocker_port->stp_state == state)
3203 return 0;
3204
3205 rocker_port->stp_state = state;
3206
3207 switch (state) {
3208 case BR_STATE_DISABLED:
3209 /* port is completely disabled */
3210 break;
3211 case BR_STATE_LISTENING:
3212 case BR_STATE_BLOCKING:
3213 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3214 break;
3215 case BR_STATE_LEARNING:
3216 case BR_STATE_FORWARDING:
3217 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3218 want[ROCKER_CTRL_IPV4_MCAST] = true;
3219 want[ROCKER_CTRL_IPV6_MCAST] = true;
3220 if (rocker_port_is_bridged(rocker_port))
3221 want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3222 else
3223 want[ROCKER_CTRL_LOCAL_ARP] = true;
3224 break;
3225 }
3226
3227 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3228 if (want[i] != rocker_port->ctrls[i]) {
3229 flags = ROCKER_OP_FLAG_NOWAIT |
3230 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3231 err = rocker_port_ctrl(rocker_port, flags,
3232 &rocker_ctrls[i]);
3233 if (err)
3234 return err;
3235 rocker_port->ctrls[i] = want[i];
3236 }
3237 }
3238
3239 err = rocker_port_fdb_flush(rocker_port);
3240 if (err)
3241 return err;
3242
3243 return rocker_port_fwding(rocker_port);
3244}
3245
9f6bbf7c
SF		 3246static struct rocker_internal_vlan_tbl_entry *
3247rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3248{
3249 struct rocker_internal_vlan_tbl_entry *found;
3250
3251 hash_for_each_possible(rocker->internal_vlan_tbl, found,
3252 entry, ifindex) {
3253 if (found->ifindex == ifindex)
3254 return found;
3255 }
3256
3257 return NULL;
3258}
3259
3260static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3261 int ifindex)
3262{
3263 struct rocker *rocker = rocker_port->rocker;
3264 struct rocker_internal_vlan_tbl_entry *entry;
3265 struct rocker_internal_vlan_tbl_entry *found;
3266 unsigned long lock_flags;
3267 int i;
3268
3269 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3270 if (!entry)
3271 return 0;
3272
3273 entry->ifindex = ifindex;
3274
3275 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3276
3277 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3278 if (found) {
3279 kfree(entry);
3280 goto found;
3281 }
3282
3283 found = entry;
3284 hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3285
3286 for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3287 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3288 continue;
3289 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3290 goto found;
3291 }
3292
3293 netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3294
3295found:
3296 found->ref_count++;
3297 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3298
3299 return found->vlan_id;
3300}
3301
3302static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3303 int ifindex)
3304{
3305 struct rocker *rocker = rocker_port->rocker;
3306 struct rocker_internal_vlan_tbl_entry *found;
3307 unsigned long lock_flags;
3308 unsigned long bit;
3309
3310 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3311
3312 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3313 if (!found) {
3314 netdev_err(rocker_port->dev,
3315 "ifindex (%d) not found in internal VLAN tbl\n",
3316 ifindex);
3317 goto not_found;
3318 }
3319
3320 if (--found->ref_count <= 0) {
3321 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3322 clear_bit(bit, rocker->internal_vlan_bitmap);
3323 hash_del(&found->entry);
3324 kfree(found);
3325 }
3326
3327not_found:
3328 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3329}
3330
4b8ac966
JP		 3331/*****************
3332 * Net device ops
3333 *****************/
3334
3335static int rocker_port_open(struct net_device *dev)
3336{
3337 struct rocker_port *rocker_port = netdev_priv(dev);
6c707945
SF		 3338 u8 stp_state = rocker_port_is_bridged(rocker_port) ?
3339 BR_STATE_BLOCKING : BR_STATE_FORWARDING;
4b8ac966
JP		 3340 int err;
3341
3342 err = rocker_port_dma_rings_init(rocker_port);
3343 if (err)
3344 return err;
3345
3346 err = request_irq(rocker_msix_tx_vector(rocker_port),
3347 rocker_tx_irq_handler, 0,
3348 rocker_driver_name, rocker_port);
3349 if (err) {
3350 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3351 goto err_request_tx_irq;
3352 }
3353
3354 err = request_irq(rocker_msix_rx_vector(rocker_port),
3355 rocker_rx_irq_handler, 0,
3356 rocker_driver_name, rocker_port);
3357 if (err) {
3358 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3359 goto err_request_rx_irq;
3360 }
3361
6c707945
SF		 3362 err = rocker_port_stp_update(rocker_port, stp_state);
3363 if (err)
3364 goto err_stp_update;
3365
4b8ac966
JP		 3366 napi_enable(&rocker_port->napi_tx);
3367 napi_enable(&rocker_port->napi_rx);
3368 rocker_port_set_enable(rocker_port, true);
3369 netif_start_queue(dev);
3370 return 0;
3371
6c707945
SF		 3372err_stp_update:
3373 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4b8ac966
JP		 3374err_request_rx_irq:
3375 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3376err_request_tx_irq:
3377 rocker_port_dma_rings_fini(rocker_port);
3378 return err;
3379}
3380
3381static int rocker_port_stop(struct net_device *dev)
3382{
3383 struct rocker_port *rocker_port = netdev_priv(dev);
3384
3385 netif_stop_queue(dev);
3386 rocker_port_set_enable(rocker_port, false);
3387 napi_disable(&rocker_port->napi_rx);
3388 napi_disable(&rocker_port->napi_tx);
6c707945 3389 rocker_port_stp_update(rocker_port, BR_STATE_DISABLED);
4b8ac966
JP		 3390 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3391 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3392 rocker_port_dma_rings_fini(rocker_port);
3393
3394 return 0;
3395}
3396
3397static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
3398 struct rocker_desc_info *desc_info)
3399{
3400 struct rocker *rocker = rocker_port->rocker;
3401 struct pci_dev *pdev = rocker->pdev;
3402 struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
3403 struct rocker_tlv *attr;
3404 int rem;
3405
3406 rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
3407 if (!attrs[ROCKER_TLV_TX_FRAGS])
3408 return;
3409 rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
3410 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
3411 dma_addr_t dma_handle;
3412 size_t len;
3413
3414 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
3415 continue;
3416 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
3417 attr);
3418 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
3419 !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
3420 continue;
3421 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
3422 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
3423 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
3424 }
3425}
3426
3427static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
3428 struct rocker_desc_info *desc_info,
3429 char *buf, size_t buf_len)
3430{
3431 struct rocker *rocker = rocker_port->rocker;
3432 struct pci_dev *pdev = rocker->pdev;
3433 dma_addr_t dma_handle;
3434 struct rocker_tlv *frag;
3435
3436 dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
3437 if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
3438 if (net_ratelimit())
3439 netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
3440 return -EIO;
3441 }
3442 frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
3443 if (!frag)
3444 goto unmap_frag;
3445 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
3446 dma_handle))
3447 goto nest_cancel;
3448 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
3449 buf_len))
3450 goto nest_cancel;
3451 rocker_tlv_nest_end(desc_info, frag);
3452 return 0;
3453
3454nest_cancel:
3455 rocker_tlv_nest_cancel(desc_info, frag);
3456unmap_frag:
3457 pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
3458 return -EMSGSIZE;
3459}
3460
3461static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
3462{
3463 struct rocker_port *rocker_port = netdev_priv(dev);
3464 struct rocker *rocker = rocker_port->rocker;
3465 struct rocker_desc_info *desc_info;
3466 struct rocker_tlv *frags;
3467 int i;
3468 int err;
3469
3470 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3471 if (unlikely(!desc_info)) {
3472 if (net_ratelimit())
3473 netdev_err(dev, "tx ring full when queue awake\n");
3474 return NETDEV_TX_BUSY;
3475 }
3476
3477 rocker_desc_cookie_ptr_set(desc_info, skb);
3478
3479 frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
3480 if (!frags)
3481 goto out;
3482 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3483 skb->data, skb_headlen(skb));
3484 if (err)
3485 goto nest_cancel;
3486 if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
3487 goto nest_cancel;
3488
3489 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3490 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3491
3492 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3493 skb_frag_address(frag),
3494 skb_frag_size(frag));
3495 if (err)
3496 goto unmap_frags;
3497 }
3498 rocker_tlv_nest_end(desc_info, frags);
3499
3500 rocker_desc_gen_clear(desc_info);
3501 rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
3502
3503 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3504 if (!desc_info)
3505 netif_stop_queue(dev);
3506
3507 return NETDEV_TX_OK;
3508
3509unmap_frags:
3510 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3511nest_cancel:
3512 rocker_tlv_nest_cancel(desc_info, frags);
3513out:
3514 dev_kfree_skb(skb);
3515 return NETDEV_TX_OK;
3516}
3517
3518static int rocker_port_set_mac_address(struct net_device *dev, void *p)
3519{
3520 struct sockaddr *addr = p;
3521 struct rocker_port *rocker_port = netdev_priv(dev);
3522 int err;
3523
3524 if (!is_valid_ether_addr(addr->sa_data))
3525 return -EADDRNOTAVAIL;
3526
3527 err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
3528 if (err)
3529 return err;
3530 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3531 return 0;
3532}
3533
6c707945
SF		 3534static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
3535 __be16 proto, u16 vid)
3536{
3537 struct rocker_port *rocker_port = netdev_priv(dev);
3538 int err;
3539
3540 err = rocker_port_vlan(rocker_port, 0, vid);
3541 if (err)
3542 return err;
3543
3544 return rocker_port_router_mac(rocker_port, 0, htons(vid));
3545}
3546
3547static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
3548 __be16 proto, u16 vid)
3549{
3550 struct rocker_port *rocker_port = netdev_priv(dev);
3551 int err;
3552
3553 err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE,
3554 htons(vid));
3555 if (err)
3556 return err;
3557
3558 return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid);
3559}
3560
3561static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
3562 struct net_device *dev,
3563 const unsigned char *addr, u16 vid,
3564 u16 nlm_flags)
3565{
3566 struct rocker_port *rocker_port = netdev_priv(dev);
3567 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3568 int flags = 0;
3569
3570 if (!rocker_port_is_bridged(rocker_port))
3571 return -EINVAL;
3572
3573 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3574}
3575
3576static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
3577 struct net_device *dev,
3578 const unsigned char *addr, u16 vid)
3579{
3580 struct rocker_port *rocker_port = netdev_priv(dev);
3581 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3582 int flags = ROCKER_OP_FLAG_REMOVE;
3583
3584 if (!rocker_port_is_bridged(rocker_port))
3585 return -EINVAL;
3586
3587 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3588}
3589
ce76ca68
JP		 3590static int rocker_fdb_fill_info(struct sk_buff *skb,
3591 struct rocker_port *rocker_port,
3592 const unsigned char *addr, u16 vid,
3593 u32 portid, u32 seq, int type,
3594 unsigned int flags)
3595{
3596 struct nlmsghdr *nlh;
3597 struct ndmsg *ndm;
3598
3599 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
3600 if (!nlh)
3601 return -EMSGSIZE;
3602
3603 ndm = nlmsg_data(nlh);
3604 ndm->ndm_family = AF_BRIDGE;
3605 ndm->ndm_pad1 = 0;
3606 ndm->ndm_pad2 = 0;
3607 ndm->ndm_flags = NTF_SELF;
3608 ndm->ndm_type = 0;
3609 ndm->ndm_ifindex = rocker_port->dev->ifindex;
3610 ndm->ndm_state = NUD_REACHABLE;
3611
3612 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
3613 goto nla_put_failure;
3614
3615 if (vid && nla_put_u16(skb, NDA_VLAN, vid))
3616 goto nla_put_failure;
3617
3618 return nlmsg_end(skb, nlh);
3619
3620nla_put_failure:
3621 nlmsg_cancel(skb, nlh);
3622 return -EMSGSIZE;
3623}
3624
3625static int rocker_port_fdb_dump(struct sk_buff *skb,
3626 struct netlink_callback *cb,
3627 struct net_device *dev,
3628 struct net_device *filter_dev,
3629 int idx)
3630{
3631 struct rocker_port *rocker_port = netdev_priv(dev);
3632 struct rocker *rocker = rocker_port->rocker;
3633 struct rocker_fdb_tbl_entry *found;
3634 struct hlist_node *tmp;
3635 int bkt;
3636 unsigned long lock_flags;
3637 const unsigned char *addr;
3638 u16 vid;
3639 int err;
3640
3641 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3642 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3643 if (found->key.lport != rocker_port->lport)
3644 continue;
3645 if (idx < cb->args[0])
3646 goto skip;
3647 addr = found->key.addr;
3648 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
3649 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
3650 NETLINK_CB(cb->skb).portid,
3651 cb->nlh->nlmsg_seq,
3652 RTM_NEWNEIGH, NLM_F_MULTI);
3653 if (err < 0)
3654 break;
3655skip:
3656 ++idx;
3657 }
3658 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3659 return idx;
3660}
3661
4b8ac966
JP		 3662static int rocker_port_switch_parent_id_get(struct net_device *dev,
3663 struct netdev_phys_item_id *psid)
3664{
3665 struct rocker_port *rocker_port = netdev_priv(dev);
3666 struct rocker *rocker = rocker_port->rocker;
3667
3668 psid->id_len = sizeof(rocker->hw.id);
3669 memcpy(&psid->id, &rocker->hw.id, psid->id_len);
3670 return 0;
3671}
3672
6c707945
SF		 3673static int rocker_port_switch_port_stp_update(struct net_device *dev, u8 state)
3674{
3675 struct rocker_port *rocker_port = netdev_priv(dev);
3676
3677 return rocker_port_stp_update(rocker_port, state);
3678}
3679
4b8ac966
JP		 3680static const struct net_device_ops rocker_port_netdev_ops = {
3681 .ndo_open = rocker_port_open,
3682 .ndo_stop = rocker_port_stop,
3683 .ndo_start_xmit = rocker_port_xmit,
3684 .ndo_set_mac_address = rocker_port_set_mac_address,
6c707945
SF		 3685 .ndo_vlan_rx_add_vid = rocker_port_vlan_rx_add_vid,
3686 .ndo_vlan_rx_kill_vid = rocker_port_vlan_rx_kill_vid,
3687 .ndo_fdb_add = rocker_port_fdb_add,
3688 .ndo_fdb_del = rocker_port_fdb_del,
ce76ca68 3689 .ndo_fdb_dump = rocker_port_fdb_dump,
4b8ac966 3690 .ndo_switch_parent_id_get = rocker_port_switch_parent_id_get,
6c707945 3691 .ndo_switch_port_stp_update = rocker_port_switch_port_stp_update,
4b8ac966
JP		 3692};
3693
3694/********************
3695 * ethtool interface
3696 ********************/
3697
3698static int rocker_port_get_settings(struct net_device *dev,
3699 struct ethtool_cmd *ecmd)
3700{
3701 struct rocker_port *rocker_port = netdev_priv(dev);
3702
3703 return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
3704}
3705
3706static int rocker_port_set_settings(struct net_device *dev,
3707 struct ethtool_cmd *ecmd)
3708{
3709 struct rocker_port *rocker_port = netdev_priv(dev);
3710
3711 return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
3712}
3713
3714static void rocker_port_get_drvinfo(struct net_device *dev,
3715 struct ethtool_drvinfo *drvinfo)
3716{
3717 strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
3718 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
3719}
3720
3721static const struct ethtool_ops rocker_port_ethtool_ops = {
3722 .get_settings = rocker_port_get_settings,
3723 .set_settings = rocker_port_set_settings,
3724 .get_drvinfo = rocker_port_get_drvinfo,
3725 .get_link = ethtool_op_get_link,
3726};
3727
3728/*****************
3729 * NAPI interface
3730 *****************/
3731
3732static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
3733{
3734 return container_of(napi, struct rocker_port, napi_tx);
3735}
3736
3737static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
3738{
3739 struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
3740 struct rocker *rocker = rocker_port->rocker;
3741 struct rocker_desc_info *desc_info;
3742 u32 credits = 0;
3743 int err;
3744
3745 /* Cleanup tx descriptors */
3746 while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
3747 err = rocker_desc_err(desc_info);
3748 if (err && net_ratelimit())
3749 netdev_err(rocker_port->dev, "tx desc received with err %d\n",
3750 err);
3751 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3752 dev_kfree_skb_any(rocker_desc_cookie_ptr_get(desc_info));
3753 credits++;
3754 }
3755
3756 if (credits && netif_queue_stopped(rocker_port->dev))
3757 netif_wake_queue(rocker_port->dev);
3758
3759 napi_complete(napi);
3760 rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
3761
3762 return 0;
3763}
3764
3765static int rocker_port_rx_proc(struct rocker *rocker,
3766 struct rocker_port *rocker_port,
3767 struct rocker_desc_info *desc_info)
3768{
3769 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
3770 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
3771 size_t rx_len;
3772
3773 if (!skb)
3774 return -ENOENT;
3775
3776 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
3777 if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
3778 return -EINVAL;
3779
3780 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
3781
3782 rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
3783 skb_put(skb, rx_len);
3784 skb->protocol = eth_type_trans(skb, rocker_port->dev);
3785 netif_receive_skb(skb);
3786
3787 return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
3788}
3789
3790static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
3791{
3792 return container_of(napi, struct rocker_port, napi_rx);
3793}
3794
3795static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
3796{
3797 struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
3798 struct rocker *rocker = rocker_port->rocker;
3799 struct rocker_desc_info *desc_info;
3800 u32 credits = 0;
3801 int err;
3802
3803 /* Process rx descriptors */
3804 while (credits < budget &&
3805 (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
3806 err = rocker_desc_err(desc_info);
3807 if (err) {
3808 if (net_ratelimit())
3809 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
3810 err);
3811 } else {
3812 err = rocker_port_rx_proc(rocker, rocker_port,
3813 desc_info);
3814 if (err && net_ratelimit())
3815 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
3816 err);
3817 }
3818 rocker_desc_gen_clear(desc_info);
3819 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
3820 credits++;
3821 }
3822
3823 if (credits < budget)
3824 napi_complete(napi);
3825
3826 rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
3827
3828 return credits;
3829}
3830
3831/*****************
3832 * PCI driver ops
3833 *****************/
3834
3835static void rocker_carrier_init(struct rocker_port *rocker_port)
3836{
3837 struct rocker *rocker = rocker_port->rocker;
3838 u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
3839 bool link_up;
3840
3841 link_up = link_status & (1 << rocker_port->lport);
3842 if (link_up)
3843 netif_carrier_on(rocker_port->dev);
3844 else
3845 netif_carrier_off(rocker_port->dev);
3846}
3847
3848static void rocker_remove_ports(struct rocker *rocker)
3849{
9f6bbf7c 3850 struct rocker_port *rocker_port;
4b8ac966
JP		 3851 int i;
3852
9f6bbf7c
SF		 3853 for (i = 0; i < rocker->port_count; i++) {
3854 rocker_port = rocker->ports[i];
3855 rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE);
3856 unregister_netdev(rocker_port->dev);
3857 }
4b8ac966
JP		 3858 kfree(rocker->ports);
3859}
3860
3861static void rocker_port_dev_addr_init(struct rocker *rocker,
3862 struct rocker_port *rocker_port)
3863{
3864 struct pci_dev *pdev = rocker->pdev;
3865 int err;
3866
3867 err = rocker_cmd_get_port_settings_macaddr(rocker_port,
3868 rocker_port->dev->dev_addr);
3869 if (err) {
3870 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
3871 eth_hw_addr_random(rocker_port->dev);
3872 }
3873}
3874
3875static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
3876{
3877 struct pci_dev *pdev = rocker->pdev;
3878 struct rocker_port *rocker_port;
3879 struct net_device *dev;
3880 int err;
3881
3882 dev = alloc_etherdev(sizeof(struct rocker_port));
3883 if (!dev)
3884 return -ENOMEM;
3885 rocker_port = netdev_priv(dev);
3886 rocker_port->dev = dev;
3887 rocker_port->rocker = rocker;
3888 rocker_port->port_number = port_number;
3889 rocker_port->lport = port_number + 1;
3890
3891 rocker_port_dev_addr_init(rocker, rocker_port);
3892 dev->netdev_ops = &rocker_port_netdev_ops;
3893 dev->ethtool_ops = &rocker_port_ethtool_ops;
3894 netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
3895 NAPI_POLL_WEIGHT);
3896 netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
3897 NAPI_POLL_WEIGHT);
3898 rocker_carrier_init(rocker_port);
3899
3900 dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
3901
3902 err = register_netdev(dev);
3903 if (err) {
3904 dev_err(&pdev->dev, "register_netdev failed\n");
3905 goto err_register_netdev;
3906 }
3907 rocker->ports[port_number] = rocker_port;
3908
9f6bbf7c
SF		 3909 rocker_port->internal_vlan_id =
3910 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
3911 err = rocker_port_ig_tbl(rocker_port, 0);
3912 if (err) {
3913 dev_err(&pdev->dev, "install ig port table failed\n");
3914 goto err_port_ig_tbl;
3915 }
3916
4b8ac966
JP		 3917 return 0;
3918
9f6bbf7c
SF		 3919err_port_ig_tbl:
3920 unregister_netdev(dev);
4b8ac966
JP		 3921err_register_netdev:
3922 free_netdev(dev);
3923 return err;
3924}
3925
3926static int rocker_probe_ports(struct rocker *rocker)
3927{
3928 int i;
3929 size_t alloc_size;
3930 int err;
3931
3932 alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
3933 rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
3934 for (i = 0; i < rocker->port_count; i++) {
3935 err = rocker_probe_port(rocker, i);
3936 if (err)
3937 goto remove_ports;
3938 }
3939 return 0;
3940
3941remove_ports:
3942 rocker_remove_ports(rocker);
3943 return err;
3944}
3945
3946static int rocker_msix_init(struct rocker *rocker)
3947{
3948 struct pci_dev *pdev = rocker->pdev;
3949 int msix_entries;
3950 int i;
3951 int err;
3952
3953 msix_entries = pci_msix_vec_count(pdev);
3954 if (msix_entries < 0)
3955 return msix_entries;
3956
3957 if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
3958 return -EINVAL;
3959
3960 rocker->msix_entries = kmalloc_array(msix_entries,
3961 sizeof(struct msix_entry),
3962 GFP_KERNEL);
3963 if (!rocker->msix_entries)
3964 return -ENOMEM;
3965
3966 for (i = 0; i < msix_entries; i++)
3967 rocker->msix_entries[i].entry = i;
3968
3969 err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
3970 if (err < 0)
3971 goto err_enable_msix;
3972
3973 return 0;
3974
3975err_enable_msix:
3976 kfree(rocker->msix_entries);
3977 return err;
3978}
3979
3980static void rocker_msix_fini(struct rocker *rocker)
3981{
3982 pci_disable_msix(rocker->pdev);
3983 kfree(rocker->msix_entries);
3984}
3985
3986static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3987{
3988 struct rocker *rocker;
3989 int err;
3990
3991 rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
3992 if (!rocker)
3993 return -ENOMEM;
3994
3995 err = pci_enable_device(pdev);
3996 if (err) {
3997 dev_err(&pdev->dev, "pci_enable_device failed\n");
3998 goto err_pci_enable_device;
3999 }
4000
4001 err = pci_request_regions(pdev, rocker_driver_name);
4002 if (err) {
4003 dev_err(&pdev->dev, "pci_request_regions failed\n");
4004 goto err_pci_request_regions;
4005 }
4006
4007 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4008 if (!err) {
4009 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4010 if (err) {
4011 dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4012 goto err_pci_set_dma_mask;
4013 }
4014 } else {
4015 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4016 if (err) {
4017 dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
4018 goto err_pci_set_dma_mask;
4019 }
4020 }
4021
4022 if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
4023 dev_err(&pdev->dev, "invalid PCI region size\n");
4024 goto err_pci_resource_len_check;
4025 }
4026
4027 rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
4028 pci_resource_len(pdev, 0));
4029 if (!rocker->hw_addr) {
4030 dev_err(&pdev->dev, "ioremap failed\n");
4031 err = -EIO;
4032 goto err_ioremap;
4033 }
4034 pci_set_master(pdev);
4035
4036 rocker->pdev = pdev;
4037 pci_set_drvdata(pdev, rocker);
4038
4039 rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
4040
4041 err = rocker_msix_init(rocker);
4042 if (err) {
4043 dev_err(&pdev->dev, "MSI-X init failed\n");
4044 goto err_msix_init;
4045 }
4046
4047 err = rocker_basic_hw_test(rocker);
4048 if (err) {
4049 dev_err(&pdev->dev, "basic hw test failed\n");
4050 goto err_basic_hw_test;
4051 }
4052
4053 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4054
4055 err = rocker_dma_rings_init(rocker);
4056 if (err)
4057 goto err_dma_rings_init;
4058
4059 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
4060 rocker_cmd_irq_handler, 0,
4061 rocker_driver_name, rocker);
4062 if (err) {
4063 dev_err(&pdev->dev, "cannot assign cmd irq\n");
4064 goto err_request_cmd_irq;
4065 }
4066
4067 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
4068 rocker_event_irq_handler, 0,
4069 rocker_driver_name, rocker);
4070 if (err) {
4071 dev_err(&pdev->dev, "cannot assign event irq\n");
4072 goto err_request_event_irq;
4073 }
4074
4075 rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
4076
9f6bbf7c
SF		 4077 err = rocker_init_tbls(rocker);
4078 if (err) {
4079 dev_err(&pdev->dev, "cannot init rocker tables\n");
4080 goto err_init_tbls;
4081 }
4082
4b8ac966
JP		 4083 err = rocker_probe_ports(rocker);
4084 if (err) {
4085 dev_err(&pdev->dev, "failed to probe ports\n");
4086 goto err_probe_ports;
4087 }
4088
4089 dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
4090
4091 return 0;
4092
4093err_probe_ports:
9f6bbf7c
SF		 4094 rocker_free_tbls(rocker);
4095err_init_tbls:
4b8ac966
JP		 4096 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4097err_request_event_irq:
4098 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4099err_request_cmd_irq:
4100 rocker_dma_rings_fini(rocker);
4101err_dma_rings_init:
4102err_basic_hw_test:
4103 rocker_msix_fini(rocker);
4104err_msix_init:
4105 iounmap(rocker->hw_addr);
4106err_ioremap:
4107err_pci_resource_len_check:
4108err_pci_set_dma_mask:
4109 pci_release_regions(pdev);
4110err_pci_request_regions:
4111 pci_disable_device(pdev);
4112err_pci_enable_device:
4113 kfree(rocker);
4114 return err;
4115}
4116
4117static void rocker_remove(struct pci_dev *pdev)
4118{
4119 struct rocker *rocker = pci_get_drvdata(pdev);
4120
9f6bbf7c 4121 rocker_free_tbls(rocker);
4b8ac966
JP		 4122 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4123 rocker_remove_ports(rocker);
4124 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4125 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4126 rocker_dma_rings_fini(rocker);
4127 rocker_msix_fini(rocker);
4128 iounmap(rocker->hw_addr);
4129 pci_release_regions(rocker->pdev);
4130 pci_disable_device(rocker->pdev);
4131 kfree(rocker);
4132}
4133
4134static struct pci_driver rocker_pci_driver = {
4135 .name = rocker_driver_name,
4136 .id_table = rocker_pci_id_table,
4137 .probe = rocker_probe,
4138 .remove = rocker_remove,
4139};
4140
6c707945
SF		 4141/************************************
4142 * Net device notifier event handler
4143 ************************************/
4144
4145static bool rocker_port_dev_check(struct net_device *dev)
4146{
4147 return dev->netdev_ops == &rocker_port_netdev_ops;
4148}
4149
4150static int rocker_port_bridge_join(struct rocker_port *rocker_port,
4151 struct net_device *bridge)
4152{
4153 int err;
4154
4155 rocker_port_internal_vlan_id_put(rocker_port,
4156 rocker_port->dev->ifindex);
4157
4158 rocker_port->bridge_dev = bridge;
4159
4160 /* Use bridge internal VLAN ID for untagged pkts */
4161 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4162 if (err)
4163 return err;
4164 rocker_port->internal_vlan_id =
4165 rocker_port_internal_vlan_id_get(rocker_port,
4166 bridge->ifindex);
4167 err = rocker_port_vlan(rocker_port, 0, 0);
4168
4169 return err;
4170}
4171
4172static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
4173{
4174 int err;
4175
4176 rocker_port_internal_vlan_id_put(rocker_port,
4177 rocker_port->bridge_dev->ifindex);
4178
4179 rocker_port->bridge_dev = NULL;
4180
4181 /* Use port internal VLAN ID for untagged pkts */
4182 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4183 if (err)
4184 return err;
4185 rocker_port->internal_vlan_id =
4186 rocker_port_internal_vlan_id_get(rocker_port,
4187 rocker_port->dev->ifindex);
4188 err = rocker_port_vlan(rocker_port, 0, 0);
4189
4190 return err;
4191}
4192
4193static int rocker_port_master_changed(struct net_device *dev)
4194{
4195 struct rocker_port *rocker_port = netdev_priv(dev);
4196 struct net_device *master = netdev_master_upper_dev_get(dev);
4197 int err = 0;
4198
4199 if (master && master->rtnl_link_ops &&
4200 !strcmp(master->rtnl_link_ops->kind, "bridge"))
4201 err = rocker_port_bridge_join(rocker_port, master);
4202 else
4203 err = rocker_port_bridge_leave(rocker_port);
4204
4205 return err;
4206}
4207
4208static int rocker_netdevice_event(struct notifier_block *unused,
4209 unsigned long event, void *ptr)
4210{
4211 struct net_device *dev;
4212 int err;
4213
4214 switch (event) {
4215 case NETDEV_CHANGEUPPER:
4216 dev = netdev_notifier_info_to_dev(ptr);
4217 if (!rocker_port_dev_check(dev))
4218 return NOTIFY_DONE;
4219 err = rocker_port_master_changed(dev);
4220 if (err)
4221 netdev_warn(dev,
4222 "failed to reflect master change (err %d)\n",
4223 err);
4224 break;
4225 }
4226
4227 return NOTIFY_DONE;
4228}
4229
4230static struct notifier_block rocker_netdevice_nb __read_mostly = {
4231 .notifier_call = rocker_netdevice_event,
4232};
4233
4b8ac966
JP		 4234/***********************
4235 * Module init and exit
4236 ***********************/
4237
4238static int __init rocker_module_init(void)
4239{
6c707945
SF		 4240 int err;
4241
4242 register_netdevice_notifier(&rocker_netdevice_nb);
4243 err = pci_register_driver(&rocker_pci_driver);
4244 if (err)
4245 goto err_pci_register_driver;
4246 return 0;
4247
4248err_pci_register_driver:
4249 unregister_netdevice_notifier(&rocker_netdevice_nb);
4250 return err;
4b8ac966
JP		 4251}
4252
4253static void __exit rocker_module_exit(void)
4254{
6c707945 4255 unregister_netdevice_notifier(&rocker_netdevice_nb);
4b8ac966
JP		 4256 pci_unregister_driver(&rocker_pci_driver);
4257}
4258
4259module_init(rocker_module_init);
4260module_exit(rocker_module_exit);
4261
4262MODULE_LICENSE("GPL v2");
4263MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
4264MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
4265MODULE_DESCRIPTION("Rocker switch device driver");
4266MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);
Ubuntu Disco kernel mirror for Proxmox VE and PMG