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[mirror_ubuntu-disco-kernel.git] / drivers / net / ethernet / rocker / rocker.c
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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>
c1beeef7
SF		 35#include <net/ip_fib.h>
36#include <net/netevent.h>
37#include <net/arp.h>
4b8ac966
JP		 38#include <asm-generic/io-64-nonatomic-lo-hi.h>
39#include <generated/utsrelease.h>
40
41#include "rocker.h"
42
43static const char rocker_driver_name[] = "rocker";
44
45static const struct pci_device_id rocker_pci_id_table[] = {
46 {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
47 {0, }
48};
49
9f6bbf7c
SF		 50struct rocker_flow_tbl_key {
51 u32 priority;
52 enum rocker_of_dpa_table_id tbl_id;
53 union {
54 struct {
4a6bb6d3
SF		 55 u32 in_pport;
56 u32 in_pport_mask;
9f6bbf7c
SF		 57 enum rocker_of_dpa_table_id goto_tbl;
58 } ig_port;
59 struct {
4a6bb6d3 60 u32 in_pport;
9f6bbf7c
SF		 61 __be16 vlan_id;
62 __be16 vlan_id_mask;
63 enum rocker_of_dpa_table_id goto_tbl;
64 bool untagged;
65 __be16 new_vlan_id;
66 } vlan;
67 struct {
4a6bb6d3
SF		 68 u32 in_pport;
69 u32 in_pport_mask;
9f6bbf7c
SF		 70 __be16 eth_type;
71 u8 eth_dst[ETH_ALEN];
72 u8 eth_dst_mask[ETH_ALEN];
73 __be16 vlan_id;
74 __be16 vlan_id_mask;
75 enum rocker_of_dpa_table_id goto_tbl;
76 bool copy_to_cpu;
77 } term_mac;
78 struct {
79 __be16 eth_type;
80 __be32 dst4;
81 __be32 dst4_mask;
82 enum rocker_of_dpa_table_id goto_tbl;
83 u32 group_id;
84 } ucast_routing;
85 struct {
86 u8 eth_dst[ETH_ALEN];
87 u8 eth_dst_mask[ETH_ALEN];
88 int has_eth_dst;
89 int has_eth_dst_mask;
90 __be16 vlan_id;
91 u32 tunnel_id;
92 enum rocker_of_dpa_table_id goto_tbl;
93 u32 group_id;
94 bool copy_to_cpu;
95 } bridge;
96 struct {
4a6bb6d3
SF		 97 u32 in_pport;
98 u32 in_pport_mask;
9f6bbf7c
SF		 99 u8 eth_src[ETH_ALEN];
100 u8 eth_src_mask[ETH_ALEN];
101 u8 eth_dst[ETH_ALEN];
102 u8 eth_dst_mask[ETH_ALEN];
103 __be16 eth_type;
104 __be16 vlan_id;
105 __be16 vlan_id_mask;
106 u8 ip_proto;
107 u8 ip_proto_mask;
108 u8 ip_tos;
109 u8 ip_tos_mask;
110 u32 group_id;
111 } acl;
112 };
113};
114
115struct rocker_flow_tbl_entry {
116 struct hlist_node entry;
c1beeef7 117 u32 cmd;
9f6bbf7c
SF		 118 u64 cookie;
119 struct rocker_flow_tbl_key key;
c1beeef7 120 size_t key_len;
9f6bbf7c
SF		 121 u32 key_crc32; /* key */
122};
123
124struct rocker_group_tbl_entry {
125 struct hlist_node entry;
126 u32 cmd;
127 u32 group_id; /* key */
128 u16 group_count;
129 u32 *group_ids;
130 union {
131 struct {
132 u8 pop_vlan;
133 } l2_interface;
134 struct {
135 u8 eth_src[ETH_ALEN];
136 u8 eth_dst[ETH_ALEN];
137 __be16 vlan_id;
138 u32 group_id;
139 } l2_rewrite;
140 struct {
141 u8 eth_src[ETH_ALEN];
142 u8 eth_dst[ETH_ALEN];
143 __be16 vlan_id;
144 bool ttl_check;
145 u32 group_id;
146 } l3_unicast;
147 };
148};
149
150struct rocker_fdb_tbl_entry {
151 struct hlist_node entry;
152 u32 key_crc32; /* key */
153 bool learned;
154 struct rocker_fdb_tbl_key {
4a6bb6d3 155 u32 pport;
9f6bbf7c
SF		 156 u8 addr[ETH_ALEN];
157 __be16 vlan_id;
158 } key;
159};
160
161struct rocker_internal_vlan_tbl_entry {
162 struct hlist_node entry;
163 int ifindex; /* key */
164 u32 ref_count;
165 __be16 vlan_id;
166};
167
c1beeef7
SF		 168struct rocker_neigh_tbl_entry {
169 struct hlist_node entry;
170 __be32 ip_addr; /* key */
171 struct net_device *dev;
172 u32 ref_count;
173 u32 index;
174 u8 eth_dst[ETH_ALEN];
175 bool ttl_check;
176};
177
4b8ac966
JP		 178struct rocker_desc_info {
179 char *data; /* mapped */
180 size_t data_size;
181 size_t tlv_size;
182 struct rocker_desc *desc;
183 DEFINE_DMA_UNMAP_ADDR(mapaddr);
184};
185
186struct rocker_dma_ring_info {
187 size_t size;
188 u32 head;
189 u32 tail;
190 struct rocker_desc *desc; /* mapped */
191 dma_addr_t mapaddr;
192 struct rocker_desc_info *desc_info;
193 unsigned int type;
194};
195
196struct rocker;
197
9f6bbf7c
SF		 198enum {
199 ROCKER_CTRL_LINK_LOCAL_MCAST,
200 ROCKER_CTRL_LOCAL_ARP,
201 ROCKER_CTRL_IPV4_MCAST,
202 ROCKER_CTRL_IPV6_MCAST,
203 ROCKER_CTRL_DFLT_BRIDGING,
204 ROCKER_CTRL_MAX,
205};
206
207#define ROCKER_INTERNAL_VLAN_ID_BASE 0x0f00
208#define ROCKER_N_INTERNAL_VLANS 255
209#define ROCKER_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
210#define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
211
4b8ac966
JP		 212struct rocker_port {
213 struct net_device *dev;
6c707945 214 struct net_device *bridge_dev;
4b8ac966
JP		 215 struct rocker *rocker;
216 unsigned int port_number;
4a6bb6d3 217 u32 pport;
9f6bbf7c 218 __be16 internal_vlan_id;
6c707945 219 int stp_state;
5111f80c 220 u32 brport_flags;
9f6bbf7c
SF		 221 bool ctrls[ROCKER_CTRL_MAX];
222 unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
4b8ac966
JP		 223 struct napi_struct napi_tx;
224 struct napi_struct napi_rx;
225 struct rocker_dma_ring_info tx_ring;
226 struct rocker_dma_ring_info rx_ring;
227};
228
229struct rocker {
230 struct pci_dev *pdev;
231 u8 __iomem *hw_addr;
232 struct msix_entry *msix_entries;
233 unsigned int port_count;
234 struct rocker_port **ports;
235 struct {
236 u64 id;
237 } hw;
238 spinlock_t cmd_ring_lock;
239 struct rocker_dma_ring_info cmd_ring;
240 struct rocker_dma_ring_info event_ring;
9f6bbf7c
SF		 241 DECLARE_HASHTABLE(flow_tbl, 16);
242 spinlock_t flow_tbl_lock;
243 u64 flow_tbl_next_cookie;
244 DECLARE_HASHTABLE(group_tbl, 16);
245 spinlock_t group_tbl_lock;
246 DECLARE_HASHTABLE(fdb_tbl, 16);
247 spinlock_t fdb_tbl_lock;
248 unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
249 DECLARE_HASHTABLE(internal_vlan_tbl, 8);
250 spinlock_t internal_vlan_tbl_lock;
c1beeef7
SF		 251 DECLARE_HASHTABLE(neigh_tbl, 16);
252 spinlock_t neigh_tbl_lock;
253 u32 neigh_tbl_next_index;
9f6bbf7c
SF		 254};
255
256static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
257static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
258static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
259static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
260static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
261static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
262static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
263static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
264static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
265
266/* Rocker priority levels for flow table entries. Higher
267 * priority match takes precedence over lower priority match.
268 */
269
270enum {
271 ROCKER_PRIORITY_UNKNOWN = 0,
272 ROCKER_PRIORITY_IG_PORT = 1,
273 ROCKER_PRIORITY_VLAN = 1,
274 ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
275 ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
9f6bbf7c
SF		 276 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
277 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
278 ROCKER_PRIORITY_BRIDGING_VLAN = 3,
279 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
280 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
281 ROCKER_PRIORITY_BRIDGING_TENANT = 3,
282 ROCKER_PRIORITY_ACL_CTRL = 3,
283 ROCKER_PRIORITY_ACL_NORMAL = 2,
284 ROCKER_PRIORITY_ACL_DFLT = 1,
4b8ac966
JP		 285};
286
9f6bbf7c
SF		 287static bool rocker_vlan_id_is_internal(__be16 vlan_id)
288{
289 u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
290 u16 end = 0xffe;
291 u16 _vlan_id = ntohs(vlan_id);
292
293 return (_vlan_id >= start && _vlan_id <= end);
294}
295
296static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port,
297 u16 vid, bool *pop_vlan)
298{
299 __be16 vlan_id;
300
301 if (pop_vlan)
302 *pop_vlan = false;
303 vlan_id = htons(vid);
304 if (!vlan_id) {
305 vlan_id = rocker_port->internal_vlan_id;
306 if (pop_vlan)
307 *pop_vlan = true;
308 }
309
310 return vlan_id;
311}
312
6c707945
SF		 313static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port,
314 __be16 vlan_id)
315{
316 if (rocker_vlan_id_is_internal(vlan_id))
317 return 0;
318
319 return ntohs(vlan_id);
320}
321
322static bool rocker_port_is_bridged(struct rocker_port *rocker_port)
323{
324 return !!rocker_port->bridge_dev;
325}
326
4b8ac966
JP		 327struct rocker_wait {
328 wait_queue_head_t wait;
329 bool done;
330 bool nowait;
331};
332
333static void rocker_wait_reset(struct rocker_wait *wait)
334{
335 wait->done = false;
336 wait->nowait = false;
337}
338
339static void rocker_wait_init(struct rocker_wait *wait)
340{
341 init_waitqueue_head(&wait->wait);
342 rocker_wait_reset(wait);
343}
344
345static struct rocker_wait *rocker_wait_create(gfp_t gfp)
346{
347 struct rocker_wait *wait;
348
349 wait = kmalloc(sizeof(*wait), gfp);
350 if (!wait)
351 return NULL;
352 rocker_wait_init(wait);
353 return wait;
354}
355
356static void rocker_wait_destroy(struct rocker_wait *work)
357{
358 kfree(work);
359}
360
361static bool rocker_wait_event_timeout(struct rocker_wait *wait,
362 unsigned long timeout)
363{
364 wait_event_timeout(wait->wait, wait->done, HZ / 10);
365 if (!wait->done)
366 return false;
367 return true;
368}
369
370static void rocker_wait_wake_up(struct rocker_wait *wait)
371{
372 wait->done = true;
373 wake_up(&wait->wait);
374}
375
376static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector)
377{
378 return rocker->msix_entries[vector].vector;
379}
380
381static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port)
382{
383 return rocker_msix_vector(rocker_port->rocker,
384 ROCKER_MSIX_VEC_TX(rocker_port->port_number));
385}
386
387static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port)
388{
389 return rocker_msix_vector(rocker_port->rocker,
390 ROCKER_MSIX_VEC_RX(rocker_port->port_number));
391}
392
393#define rocker_write32(rocker, reg, val) \
394 writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
395#define rocker_read32(rocker, reg) \
396 readl((rocker)->hw_addr + (ROCKER_ ## reg))
397#define rocker_write64(rocker, reg, val) \
398 writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
399#define rocker_read64(rocker, reg) \
400 readq((rocker)->hw_addr + (ROCKER_ ## reg))
401
402/*****************************
403 * HW basic testing functions
404 *****************************/
405
406static int rocker_reg_test(struct rocker *rocker)
407{
408 struct pci_dev *pdev = rocker->pdev;
409 u64 test_reg;
410 u64 rnd;
411
412 rnd = prandom_u32();
413 rnd >>= 1;
414 rocker_write32(rocker, TEST_REG, rnd);
415 test_reg = rocker_read32(rocker, TEST_REG);
416 if (test_reg != rnd * 2) {
417 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
418 test_reg, rnd * 2);
419 return -EIO;
420 }
421
422 rnd = prandom_u32();
423 rnd <<= 31;
424 rnd |= prandom_u32();
425 rocker_write64(rocker, TEST_REG64, rnd);
426 test_reg = rocker_read64(rocker, TEST_REG64);
427 if (test_reg != rnd * 2) {
428 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
429 test_reg, rnd * 2);
430 return -EIO;
431 }
432
433 return 0;
434}
435
436static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait,
437 u32 test_type, dma_addr_t dma_handle,
438 unsigned char *buf, unsigned char *expect,
439 size_t size)
440{
441 struct pci_dev *pdev = rocker->pdev;
442 int i;
443
444 rocker_wait_reset(wait);
445 rocker_write32(rocker, TEST_DMA_CTRL, test_type);
446
447 if (!rocker_wait_event_timeout(wait, HZ / 10)) {
448 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
449 return -EIO;
450 }
451
452 for (i = 0; i < size; i++) {
453 if (buf[i] != expect[i]) {
454 dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
455 buf[i], i, expect[i]);
456 return -EIO;
457 }
458 }
459 return 0;
460}
461
462#define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
463#define ROCKER_TEST_DMA_FILL_PATTERN 0x96
464
465static int rocker_dma_test_offset(struct rocker *rocker,
466 struct rocker_wait *wait, int offset)
467{
468 struct pci_dev *pdev = rocker->pdev;
469 unsigned char *alloc;
470 unsigned char *buf;
471 unsigned char *expect;
472 dma_addr_t dma_handle;
473 int i;
474 int err;
475
476 alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
477 GFP_KERNEL | GFP_DMA);
478 if (!alloc)
479 return -ENOMEM;
480 buf = alloc + offset;
481 expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
482
483 dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
484 PCI_DMA_BIDIRECTIONAL);
485 if (pci_dma_mapping_error(pdev, dma_handle)) {
486 err = -EIO;
487 goto free_alloc;
488 }
489
490 rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
491 rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
492
493 memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
494 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
495 dma_handle, buf, expect,
496 ROCKER_TEST_DMA_BUF_SIZE);
497 if (err)
498 goto unmap;
499
500 memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
501 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
502 dma_handle, buf, expect,
503 ROCKER_TEST_DMA_BUF_SIZE);
504 if (err)
505 goto unmap;
506
507 prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
508 for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
509 expect[i] = ~buf[i];
510 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
511 dma_handle, buf, expect,
512 ROCKER_TEST_DMA_BUF_SIZE);
513 if (err)
514 goto unmap;
515
516unmap:
517 pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
518 PCI_DMA_BIDIRECTIONAL);
519free_alloc:
520 kfree(alloc);
521
522 return err;
523}
524
525static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait)
526{
527 int i;
528 int err;
529
530 for (i = 0; i < 8; i++) {
531 err = rocker_dma_test_offset(rocker, wait, i);
532 if (err)
533 return err;
534 }
535 return 0;
536}
537
538static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
539{
540 struct rocker_wait *wait = dev_id;
541
542 rocker_wait_wake_up(wait);
543
544 return IRQ_HANDLED;
545}
546
547static int rocker_basic_hw_test(struct rocker *rocker)
548{
549 struct pci_dev *pdev = rocker->pdev;
550 struct rocker_wait wait;
551 int err;
552
553 err = rocker_reg_test(rocker);
554 if (err) {
555 dev_err(&pdev->dev, "reg test failed\n");
556 return err;
557 }
558
559 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
560 rocker_test_irq_handler, 0,
561 rocker_driver_name, &wait);
562 if (err) {
563 dev_err(&pdev->dev, "cannot assign test irq\n");
564 return err;
565 }
566
567 rocker_wait_init(&wait);
568 rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
569
570 if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
571 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
572 err = -EIO;
573 goto free_irq;
574 }
575
576 err = rocker_dma_test(rocker, &wait);
577 if (err)
578 dev_err(&pdev->dev, "dma test failed\n");
579
580free_irq:
581 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
582 return err;
583}
584
585/******
586 * TLV
587 ******/
588
589#define ROCKER_TLV_ALIGNTO 8U
590#define ROCKER_TLV_ALIGN(len) \
591 (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
592#define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
593
594/* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
595 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
596 * | Header | Pad | Payload | Pad |
597 * | (struct rocker_tlv) | ing | | ing |
598 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
599 * <--------------------------- tlv->len -------------------------->
600 */
601
602static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
603 int *remaining)
604{
605 int totlen = ROCKER_TLV_ALIGN(tlv->len);
606
607 *remaining -= totlen;
608 return (struct rocker_tlv *) ((char *) tlv + totlen);
609}
610
611static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
612{
613 return remaining >= (int) ROCKER_TLV_HDRLEN &&
614 tlv->len >= ROCKER_TLV_HDRLEN &&
615 tlv->len <= remaining;
616}
617
618#define rocker_tlv_for_each(pos, head, len, rem) \
619 for (pos = head, rem = len; \
620 rocker_tlv_ok(pos, rem); \
621 pos = rocker_tlv_next(pos, &(rem)))
622
623#define rocker_tlv_for_each_nested(pos, tlv, rem) \
624 rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \
625 rocker_tlv_len(tlv), rem)
626
627static int rocker_tlv_attr_size(int payload)
628{
629 return ROCKER_TLV_HDRLEN + payload;
630}
631
632static int rocker_tlv_total_size(int payload)
633{
634 return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
635}
636
637static int rocker_tlv_padlen(int payload)
638{
639 return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
640}
641
642static int rocker_tlv_type(const struct rocker_tlv *tlv)
643{
644 return tlv->type;
645}
646
647static void *rocker_tlv_data(const struct rocker_tlv *tlv)
648{
649 return (char *) tlv + ROCKER_TLV_HDRLEN;
650}
651
652static int rocker_tlv_len(const struct rocker_tlv *tlv)
653{
654 return tlv->len - ROCKER_TLV_HDRLEN;
655}
656
657static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
658{
659 return *(u8 *) rocker_tlv_data(tlv);
660}
661
662static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
663{
664 return *(u16 *) rocker_tlv_data(tlv);
665}
666
9b03c71f
JP		 667static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
668{
669 return *(__be16 *) rocker_tlv_data(tlv);
670}
671
4b8ac966
JP		 672static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
673{
674 return *(u32 *) rocker_tlv_data(tlv);
675}
676
677static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
678{
679 return *(u64 *) rocker_tlv_data(tlv);
680}
681
682static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
683 const char *buf, int buf_len)
684{
685 const struct rocker_tlv *tlv;
686 const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
687 int rem;
688
689 memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
690
691 rocker_tlv_for_each(tlv, head, buf_len, rem) {
692 u32 type = rocker_tlv_type(tlv);
693
694 if (type > 0 && type <= maxtype)
695 tb[type] = (struct rocker_tlv *) tlv;
696 }
697}
698
699static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
700 const struct rocker_tlv *tlv)
701{
702 rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
703 rocker_tlv_len(tlv));
704}
705
706static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
707 struct rocker_desc_info *desc_info)
708{
709 rocker_tlv_parse(tb, maxtype, desc_info->data,
710 desc_info->desc->tlv_size);
711}
712
713static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
714{
715 return (struct rocker_tlv *) ((char *) desc_info->data +
716 desc_info->tlv_size);
717}
718
719static int rocker_tlv_put(struct rocker_desc_info *desc_info,
720 int attrtype, int attrlen, const void *data)
721{
722 int tail_room = desc_info->data_size - desc_info->tlv_size;
723 int total_size = rocker_tlv_total_size(attrlen);
724 struct rocker_tlv *tlv;
725
726 if (unlikely(tail_room < total_size))
727 return -EMSGSIZE;
728
729 tlv = rocker_tlv_start(desc_info);
730 desc_info->tlv_size += total_size;
731 tlv->type = attrtype;
732 tlv->len = rocker_tlv_attr_size(attrlen);
733 memcpy(rocker_tlv_data(tlv), data, attrlen);
734 memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
735 return 0;
736}
737
738static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
739 int attrtype, u8 value)
740{
741 return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
742}
743
744static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
745 int attrtype, u16 value)
746{
747 return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
748}
749
9b03c71f
JP		 750static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
751 int attrtype, __be16 value)
752{
753 return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
754}
755
4b8ac966
JP		 756static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
757 int attrtype, u32 value)
758{
759 return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
760}
761
9b03c71f
JP		 762static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
763 int attrtype, __be32 value)
764{
765 return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
766}
767
4b8ac966
JP		 768static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
769 int attrtype, u64 value)
770{
771 return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
772}
773
774static struct rocker_tlv *
775rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
776{
777 struct rocker_tlv *start = rocker_tlv_start(desc_info);
778
779 if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
780 return NULL;
781
782 return start;
783}
784
785static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
786 struct rocker_tlv *start)
787{
788 start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
789}
790
791static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
792 struct rocker_tlv *start)
793{
794 desc_info->tlv_size = (char *) start - desc_info->data;
795}
796
797/******************************************
798 * DMA rings and descriptors manipulations
799 ******************************************/
800
801static u32 __pos_inc(u32 pos, size_t limit)
802{
803 return ++pos == limit ? 0 : pos;
804}
805
806static int rocker_desc_err(struct rocker_desc_info *desc_info)
807{
7eb344f8
SF		 808 int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN;
809
810 switch (err) {
811 case ROCKER_OK:
812 return 0;
813 case -ROCKER_ENOENT:
814 return -ENOENT;
815 case -ROCKER_ENXIO:
816 return -ENXIO;
817 case -ROCKER_ENOMEM:
818 return -ENOMEM;
819 case -ROCKER_EEXIST:
820 return -EEXIST;
821 case -ROCKER_EINVAL:
822 return -EINVAL;
823 case -ROCKER_EMSGSIZE:
824 return -EMSGSIZE;
825 case -ROCKER_ENOTSUP:
826 return -EOPNOTSUPP;
827 case -ROCKER_ENOBUFS:
828 return -ENOBUFS;
829 }
830
831 return -EINVAL;
4b8ac966
JP		 832}
833
834static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
835{
836 desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
837}
838
839static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
840{
841 u32 comp_err = desc_info->desc->comp_err;
842
843 return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
844}
845
846static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
847{
adedf37b 848 return (void *)(uintptr_t)desc_info->desc->cookie;
4b8ac966
JP		 849}
850
851static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
852 void *ptr)
853{
adedf37b 854 desc_info->desc->cookie = (uintptr_t) ptr;
4b8ac966
JP		 855}
856
857static struct rocker_desc_info *
858rocker_desc_head_get(struct rocker_dma_ring_info *info)
859{
860 static struct rocker_desc_info *desc_info;
861 u32 head = __pos_inc(info->head, info->size);
862
863 desc_info = &info->desc_info[info->head];
864 if (head == info->tail)
865 return NULL; /* ring full */
866 desc_info->tlv_size = 0;
867 return desc_info;
868}
869
870static void rocker_desc_commit(struct rocker_desc_info *desc_info)
871{
872 desc_info->desc->buf_size = desc_info->data_size;
873 desc_info->desc->tlv_size = desc_info->tlv_size;
874}
875
876static void rocker_desc_head_set(struct rocker *rocker,
877 struct rocker_dma_ring_info *info,
878 struct rocker_desc_info *desc_info)
879{
880 u32 head = __pos_inc(info->head, info->size);
881
882 BUG_ON(head == info->tail);
883 rocker_desc_commit(desc_info);
884 info->head = head;
885 rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
886}
887
888static struct rocker_desc_info *
889rocker_desc_tail_get(struct rocker_dma_ring_info *info)
890{
891 static struct rocker_desc_info *desc_info;
892
893 if (info->tail == info->head)
894 return NULL; /* nothing to be done between head and tail */
895 desc_info = &info->desc_info[info->tail];
896 if (!rocker_desc_gen(desc_info))
897 return NULL; /* gen bit not set, desc is not ready yet */
898 info->tail = __pos_inc(info->tail, info->size);
899 desc_info->tlv_size = desc_info->desc->tlv_size;
900 return desc_info;
901}
902
903static void rocker_dma_ring_credits_set(struct rocker *rocker,
904 struct rocker_dma_ring_info *info,
905 u32 credits)
906{
907 if (credits)
908 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
909}
910
911static unsigned long rocker_dma_ring_size_fix(size_t size)
912{
913 return max(ROCKER_DMA_SIZE_MIN,
914 min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
915}
916
917static int rocker_dma_ring_create(struct rocker *rocker,
918 unsigned int type,
919 size_t size,
920 struct rocker_dma_ring_info *info)
921{
922 int i;
923
924 BUG_ON(size != rocker_dma_ring_size_fix(size));
925 info->size = size;
926 info->type = type;
927 info->head = 0;
928 info->tail = 0;
929 info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
930 GFP_KERNEL);
931 if (!info->desc_info)
932 return -ENOMEM;
933
934 info->desc = pci_alloc_consistent(rocker->pdev,
935 info->size * sizeof(*info->desc),
936 &info->mapaddr);
937 if (!info->desc) {
938 kfree(info->desc_info);
939 return -ENOMEM;
940 }
941
942 for (i = 0; i < info->size; i++)
943 info->desc_info[i].desc = &info->desc[i];
944
945 rocker_write32(rocker, DMA_DESC_CTRL(info->type),
946 ROCKER_DMA_DESC_CTRL_RESET);
947 rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
948 rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
949
950 return 0;
951}
952
953static void rocker_dma_ring_destroy(struct rocker *rocker,
954 struct rocker_dma_ring_info *info)
955{
956 rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
957
958 pci_free_consistent(rocker->pdev,
959 info->size * sizeof(struct rocker_desc),
960 info->desc, info->mapaddr);
961 kfree(info->desc_info);
962}
963
964static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
965 struct rocker_dma_ring_info *info)
966{
967 int i;
968
969 BUG_ON(info->head || info->tail);
970
971 /* When ring is consumer, we need to advance head for each desc.
972 * That tells hw that the desc is ready to be used by it.
973 */
974 for (i = 0; i < info->size - 1; i++)
975 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
976 rocker_desc_commit(&info->desc_info[i]);
977}
978
979static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
980 struct rocker_dma_ring_info *info,
981 int direction, size_t buf_size)
982{
983 struct pci_dev *pdev = rocker->pdev;
984 int i;
985 int err;
986
987 for (i = 0; i < info->size; i++) {
988 struct rocker_desc_info *desc_info = &info->desc_info[i];
989 struct rocker_desc *desc = &info->desc[i];
990 dma_addr_t dma_handle;
991 char *buf;
992
993 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
994 if (!buf) {
995 err = -ENOMEM;
996 goto rollback;
997 }
998
999 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
1000 if (pci_dma_mapping_error(pdev, dma_handle)) {
1001 kfree(buf);
1002 err = -EIO;
1003 goto rollback;
1004 }
1005
1006 desc_info->data = buf;
1007 desc_info->data_size = buf_size;
1008 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
1009
1010 desc->buf_addr = dma_handle;
1011 desc->buf_size = buf_size;
1012 }
1013 return 0;
1014
1015rollback:
1016 for (i--; i >= 0; i--) {
1017 struct rocker_desc_info *desc_info = &info->desc_info[i];
1018
1019 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1020 desc_info->data_size, direction);
1021 kfree(desc_info->data);
1022 }
1023 return err;
1024}
1025
1026static void rocker_dma_ring_bufs_free(struct rocker *rocker,
1027 struct rocker_dma_ring_info *info,
1028 int direction)
1029{
1030 struct pci_dev *pdev = rocker->pdev;
1031 int i;
1032
1033 for (i = 0; i < info->size; i++) {
1034 struct rocker_desc_info *desc_info = &info->desc_info[i];
1035 struct rocker_desc *desc = &info->desc[i];
1036
1037 desc->buf_addr = 0;
1038 desc->buf_size = 0;
1039 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1040 desc_info->data_size, direction);
1041 kfree(desc_info->data);
1042 }
1043}
1044
1045static int rocker_dma_rings_init(struct rocker *rocker)
1046{
1047 struct pci_dev *pdev = rocker->pdev;
1048 int err;
1049
1050 err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1051 ROCKER_DMA_CMD_DEFAULT_SIZE,
1052 &rocker->cmd_ring);
1053 if (err) {
1054 dev_err(&pdev->dev, "failed to create command dma ring\n");
1055 return err;
1056 }
1057
1058 spin_lock_init(&rocker->cmd_ring_lock);
1059
1060 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1061 PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1062 if (err) {
1063 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1064 goto err_dma_cmd_ring_bufs_alloc;
1065 }
1066
1067 err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1068 ROCKER_DMA_EVENT_DEFAULT_SIZE,
1069 &rocker->event_ring);
1070 if (err) {
1071 dev_err(&pdev->dev, "failed to create event dma ring\n");
1072 goto err_dma_event_ring_create;
1073 }
1074
1075 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1076 PCI_DMA_FROMDEVICE, PAGE_SIZE);
1077 if (err) {
1078 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1079 goto err_dma_event_ring_bufs_alloc;
1080 }
1081 rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1082 return 0;
1083
1084err_dma_event_ring_bufs_alloc:
1085 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1086err_dma_event_ring_create:
1087 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1088 PCI_DMA_BIDIRECTIONAL);
1089err_dma_cmd_ring_bufs_alloc:
1090 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1091 return err;
1092}
1093
1094static void rocker_dma_rings_fini(struct rocker *rocker)
1095{
1096 rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1097 PCI_DMA_BIDIRECTIONAL);
1098 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1099 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1100 PCI_DMA_BIDIRECTIONAL);
1101 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1102}
1103
1104static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1105 struct rocker_port *rocker_port,
1106 struct rocker_desc_info *desc_info,
1107 struct sk_buff *skb, size_t buf_len)
1108{
1109 struct pci_dev *pdev = rocker->pdev;
1110 dma_addr_t dma_handle;
1111
1112 dma_handle = pci_map_single(pdev, skb->data, buf_len,
1113 PCI_DMA_FROMDEVICE);
1114 if (pci_dma_mapping_error(pdev, dma_handle))
1115 return -EIO;
1116 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1117 goto tlv_put_failure;
1118 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1119 goto tlv_put_failure;
1120 return 0;
1121
1122tlv_put_failure:
1123 pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1124 desc_info->tlv_size = 0;
1125 return -EMSGSIZE;
1126}
1127
1128static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1129{
1130 return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1131}
1132
1133static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1134 struct rocker_port *rocker_port,
1135 struct rocker_desc_info *desc_info)
1136{
1137 struct net_device *dev = rocker_port->dev;
1138 struct sk_buff *skb;
1139 size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1140 int err;
1141
1142 /* Ensure that hw will see tlv_size zero in case of an error.
1143 * That tells hw to use another descriptor.
1144 */
1145 rocker_desc_cookie_ptr_set(desc_info, NULL);
1146 desc_info->tlv_size = 0;
1147
1148 skb = netdev_alloc_skb_ip_align(dev, buf_len);
1149 if (!skb)
1150 return -ENOMEM;
1151 err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1152 skb, buf_len);
1153 if (err) {
1154 dev_kfree_skb_any(skb);
1155 return err;
1156 }
1157 rocker_desc_cookie_ptr_set(desc_info, skb);
1158 return 0;
1159}
1160
1161static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1162 struct rocker_tlv **attrs)
1163{
1164 struct pci_dev *pdev = rocker->pdev;
1165 dma_addr_t dma_handle;
1166 size_t len;
1167
1168 if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1169 !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1170 return;
1171 dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1172 len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1173 pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1174}
1175
1176static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1177 struct rocker_desc_info *desc_info)
1178{
1179 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1180 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1181
1182 if (!skb)
1183 return;
1184 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1185 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1186 dev_kfree_skb_any(skb);
1187}
1188
1189static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1190 struct rocker_port *rocker_port)
1191{
1192 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1193 int i;
1194 int err;
1195
1196 for (i = 0; i < rx_ring->size; i++) {
1197 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1198 &rx_ring->desc_info[i]);
1199 if (err)
1200 goto rollback;
1201 }
1202 return 0;
1203
1204rollback:
1205 for (i--; i >= 0; i--)
1206 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1207 return err;
1208}
1209
1210static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1211 struct rocker_port *rocker_port)
1212{
1213 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1214 int i;
1215
1216 for (i = 0; i < rx_ring->size; i++)
1217 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1218}
1219
1220static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1221{
1222 struct rocker *rocker = rocker_port->rocker;
1223 int err;
1224
1225 err = rocker_dma_ring_create(rocker,
1226 ROCKER_DMA_TX(rocker_port->port_number),
1227 ROCKER_DMA_TX_DEFAULT_SIZE,
1228 &rocker_port->tx_ring);
1229 if (err) {
1230 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1231 return err;
1232 }
1233
1234 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1235 PCI_DMA_TODEVICE,
1236 ROCKER_DMA_TX_DESC_SIZE);
1237 if (err) {
1238 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1239 goto err_dma_tx_ring_bufs_alloc;
1240 }
1241
1242 err = rocker_dma_ring_create(rocker,
1243 ROCKER_DMA_RX(rocker_port->port_number),
1244 ROCKER_DMA_RX_DEFAULT_SIZE,
1245 &rocker_port->rx_ring);
1246 if (err) {
1247 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1248 goto err_dma_rx_ring_create;
1249 }
1250
1251 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1252 PCI_DMA_BIDIRECTIONAL,
1253 ROCKER_DMA_RX_DESC_SIZE);
1254 if (err) {
1255 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1256 goto err_dma_rx_ring_bufs_alloc;
1257 }
1258
1259 err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1260 if (err) {
1261 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1262 goto err_dma_rx_ring_skbs_alloc;
1263 }
1264 rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1265
1266 return 0;
1267
1268err_dma_rx_ring_skbs_alloc:
1269 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1270 PCI_DMA_BIDIRECTIONAL);
1271err_dma_rx_ring_bufs_alloc:
1272 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1273err_dma_rx_ring_create:
1274 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1275 PCI_DMA_TODEVICE);
1276err_dma_tx_ring_bufs_alloc:
1277 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1278 return err;
1279}
1280
1281static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1282{
1283 struct rocker *rocker = rocker_port->rocker;
1284
1285 rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1286 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1287 PCI_DMA_BIDIRECTIONAL);
1288 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1289 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1290 PCI_DMA_TODEVICE);
1291 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1292}
1293
1294static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1295{
1296 u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1297
1298 if (enable)
71a83a6d 1299 val |= 1ULL << rocker_port->pport;
4b8ac966 1300 else
71a83a6d 1301 val &= ~(1ULL << rocker_port->pport);
4b8ac966
JP		 1302 rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1303}
1304
1305/********************************
1306 * Interrupt handler and helpers
1307 ********************************/
1308
1309static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1310{
1311 struct rocker *rocker = dev_id;
1312 struct rocker_desc_info *desc_info;
1313 struct rocker_wait *wait;
1314 u32 credits = 0;
1315
1316 spin_lock(&rocker->cmd_ring_lock);
1317 while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1318 wait = rocker_desc_cookie_ptr_get(desc_info);
1319 if (wait->nowait) {
1320 rocker_desc_gen_clear(desc_info);
1321 rocker_wait_destroy(wait);
1322 } else {
1323 rocker_wait_wake_up(wait);
1324 }
1325 credits++;
1326 }
1327 spin_unlock(&rocker->cmd_ring_lock);
1328 rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1329
1330 return IRQ_HANDLED;
1331}
1332
1333static void rocker_port_link_up(struct rocker_port *rocker_port)
1334{
1335 netif_carrier_on(rocker_port->dev);
1336 netdev_info(rocker_port->dev, "Link is up\n");
1337}
1338
1339static void rocker_port_link_down(struct rocker_port *rocker_port)
1340{
1341 netif_carrier_off(rocker_port->dev);
1342 netdev_info(rocker_port->dev, "Link is down\n");
1343}
1344
1345static int rocker_event_link_change(struct rocker *rocker,
1346 const struct rocker_tlv *info)
1347{
1348 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1349 unsigned int port_number;
1350 bool link_up;
1351 struct rocker_port *rocker_port;
1352
1353 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
4a6bb6d3 1354 if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT] ||
4b8ac966
JP		 1355 !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1356 return -EIO;
1357 port_number =
4a6bb6d3 1358 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_PPORT]) - 1;
4b8ac966
JP		 1359 link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1360
1361 if (port_number >= rocker->port_count)
1362 return -EINVAL;
1363
1364 rocker_port = rocker->ports[port_number];
1365 if (netif_carrier_ok(rocker_port->dev) != link_up) {
1366 if (link_up)
1367 rocker_port_link_up(rocker_port);
1368 else
1369 rocker_port_link_down(rocker_port);
1370 }
1371
1372 return 0;
1373}
1374
9f6bbf7c
SF		 1375#define ROCKER_OP_FLAG_REMOVE BIT(0)
1376#define ROCKER_OP_FLAG_NOWAIT BIT(1)
1377#define ROCKER_OP_FLAG_LEARNED BIT(2)
6c707945
SF		 1378#define ROCKER_OP_FLAG_REFRESH BIT(3)
1379
1380static int rocker_port_fdb(struct rocker_port *rocker_port,
1381 const unsigned char *addr,
1382 __be16 vlan_id, int flags);
1383
1384static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1385 const struct rocker_tlv *info)
1386{
1387 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1388 unsigned int port_number;
1389 struct rocker_port *rocker_port;
1390 unsigned char *addr;
1391 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1392 __be16 vlan_id;
1393
1394 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
4a6bb6d3 1395 if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT] ||
6c707945
SF		 1396 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1397 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1398 return -EIO;
1399 port_number =
4a6bb6d3 1400 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_PPORT]) - 1;
6c707945 1401 addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
9b03c71f 1402 vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
6c707945
SF		 1403
1404 if (port_number >= rocker->port_count)
1405 return -EINVAL;
1406
1407 rocker_port = rocker->ports[port_number];
1408
1409 if (rocker_port->stp_state != BR_STATE_LEARNING &&
1410 rocker_port->stp_state != BR_STATE_FORWARDING)
1411 return 0;
1412
1413 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
1414}
9f6bbf7c 1415
4b8ac966
JP		 1416static int rocker_event_process(struct rocker *rocker,
1417 struct rocker_desc_info *desc_info)
1418{
1419 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1420 struct rocker_tlv *info;
1421 u16 type;
1422
1423 rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1424 if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1425 !attrs[ROCKER_TLV_EVENT_INFO])
1426 return -EIO;
1427
1428 type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1429 info = attrs[ROCKER_TLV_EVENT_INFO];
1430
1431 switch (type) {
1432 case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1433 return rocker_event_link_change(rocker, info);
6c707945
SF		 1434 case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1435 return rocker_event_mac_vlan_seen(rocker, info);
4b8ac966
JP		 1436 }
1437
1438 return -EOPNOTSUPP;
1439}
1440
1441static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1442{
1443 struct rocker *rocker = dev_id;
1444 struct pci_dev *pdev = rocker->pdev;
1445 struct rocker_desc_info *desc_info;
1446 u32 credits = 0;
1447 int err;
1448
1449 while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1450 err = rocker_desc_err(desc_info);
1451 if (err) {
1452 dev_err(&pdev->dev, "event desc received with err %d\n",
1453 err);
1454 } else {
1455 err = rocker_event_process(rocker, desc_info);
1456 if (err)
1457 dev_err(&pdev->dev, "event processing failed with err %d\n",
1458 err);
1459 }
1460 rocker_desc_gen_clear(desc_info);
1461 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1462 credits++;
1463 }
1464 rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1465
1466 return IRQ_HANDLED;
1467}
1468
1469static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1470{
1471 struct rocker_port *rocker_port = dev_id;
1472
1473 napi_schedule(&rocker_port->napi_tx);
1474 return IRQ_HANDLED;
1475}
1476
1477static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1478{
1479 struct rocker_port *rocker_port = dev_id;
1480
1481 napi_schedule(&rocker_port->napi_rx);
1482 return IRQ_HANDLED;
1483}
1484
1485/********************
1486 * Command interface
1487 ********************/
1488
1489typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1490 struct rocker_port *rocker_port,
1491 struct rocker_desc_info *desc_info,
1492 void *priv);
1493
1494static int rocker_cmd_exec(struct rocker *rocker,
1495 struct rocker_port *rocker_port,
1496 rocker_cmd_cb_t prepare, void *prepare_priv,
1497 rocker_cmd_cb_t process, void *process_priv,
1498 bool nowait)
1499{
1500 struct rocker_desc_info *desc_info;
1501 struct rocker_wait *wait;
1502 unsigned long flags;
1503 int err;
1504
1505 wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL);
1506 if (!wait)
1507 return -ENOMEM;
1508 wait->nowait = nowait;
1509
1510 spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1511 desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1512 if (!desc_info) {
1513 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1514 err = -EAGAIN;
1515 goto out;
1516 }
1517 err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1518 if (err) {
1519 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1520 goto out;
1521 }
1522 rocker_desc_cookie_ptr_set(desc_info, wait);
1523 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1524 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1525
1526 if (nowait)
1527 return 0;
1528
1529 if (!rocker_wait_event_timeout(wait, HZ / 10))
1530 return -EIO;
1531
1532 err = rocker_desc_err(desc_info);
1533 if (err)
1534 return err;
1535
1536 if (process)
1537 err = process(rocker, rocker_port, desc_info, process_priv);
1538
1539 rocker_desc_gen_clear(desc_info);
1540out:
1541 rocker_wait_destroy(wait);
1542 return err;
1543}
1544
1545static int
1546rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1547 struct rocker_port *rocker_port,
1548 struct rocker_desc_info *desc_info,
1549 void *priv)
1550{
1551 struct rocker_tlv *cmd_info;
1552
1553 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1554 ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1555 return -EMSGSIZE;
1556 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1557 if (!cmd_info)
1558 return -EMSGSIZE;
4a6bb6d3
SF		 1559 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1560 rocker_port->pport))
4b8ac966
JP		 1561 return -EMSGSIZE;
1562 rocker_tlv_nest_end(desc_info, cmd_info);
1563 return 0;
1564}
1565
1566static int
1567rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1568 struct rocker_port *rocker_port,
1569 struct rocker_desc_info *desc_info,
1570 void *priv)
1571{
1572 struct ethtool_cmd *ecmd = priv;
1573 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1574 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1575 u32 speed;
1576 u8 duplex;
1577 u8 autoneg;
1578
1579 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1580 if (!attrs[ROCKER_TLV_CMD_INFO])
1581 return -EIO;
1582
1583 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1584 attrs[ROCKER_TLV_CMD_INFO]);
1585 if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1586 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1587 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1588 return -EIO;
1589
1590 speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1591 duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1592 autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1593
1594 ecmd->transceiver = XCVR_INTERNAL;
1595 ecmd->supported = SUPPORTED_TP;
1596 ecmd->phy_address = 0xff;
1597 ecmd->port = PORT_TP;
1598 ethtool_cmd_speed_set(ecmd, speed);
1599 ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1600 ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1601
1602 return 0;
1603}
1604
1605static int
1606rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1607 struct rocker_port *rocker_port,
1608 struct rocker_desc_info *desc_info,
1609 void *priv)
1610{
1611 unsigned char *macaddr = priv;
1612 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1613 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1614 struct rocker_tlv *attr;
1615
1616 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1617 if (!attrs[ROCKER_TLV_CMD_INFO])
1618 return -EIO;
1619
1620 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1621 attrs[ROCKER_TLV_CMD_INFO]);
1622 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1623 if (!attr)
1624 return -EIO;
1625
1626 if (rocker_tlv_len(attr) != ETH_ALEN)
1627 return -EINVAL;
1628
1629 ether_addr_copy(macaddr, rocker_tlv_data(attr));
1630 return 0;
1631}
1632
1633static int
1634rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1635 struct rocker_port *rocker_port,
1636 struct rocker_desc_info *desc_info,
1637 void *priv)
1638{
1639 struct ethtool_cmd *ecmd = priv;
1640 struct rocker_tlv *cmd_info;
1641
1642 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1643 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1644 return -EMSGSIZE;
1645 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1646 if (!cmd_info)
1647 return -EMSGSIZE;
4a6bb6d3
SF		 1648 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1649 rocker_port->pport))
4b8ac966
JP		 1650 return -EMSGSIZE;
1651 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1652 ethtool_cmd_speed(ecmd)))
1653 return -EMSGSIZE;
1654 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1655 ecmd->duplex))
1656 return -EMSGSIZE;
1657 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1658 ecmd->autoneg))
1659 return -EMSGSIZE;
1660 rocker_tlv_nest_end(desc_info, cmd_info);
1661 return 0;
1662}
1663
1664static int
1665rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1666 struct rocker_port *rocker_port,
1667 struct rocker_desc_info *desc_info,
1668 void *priv)
1669{
1670 unsigned char *macaddr = priv;
1671 struct rocker_tlv *cmd_info;
1672
1673 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1674 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1675 return -EMSGSIZE;
1676 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1677 if (!cmd_info)
1678 return -EMSGSIZE;
4a6bb6d3
SF		 1679 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1680 rocker_port->pport))
4b8ac966
JP		 1681 return -EMSGSIZE;
1682 if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1683 ETH_ALEN, macaddr))
1684 return -EMSGSIZE;
1685 rocker_tlv_nest_end(desc_info, cmd_info);
1686 return 0;
1687}
1688
5111f80c
SF		 1689static int
1690rocker_cmd_set_port_learning_prep(struct rocker *rocker,
1691 struct rocker_port *rocker_port,
1692 struct rocker_desc_info *desc_info,
1693 void *priv)
1694{
1695 struct rocker_tlv *cmd_info;
1696
1697 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1698 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1699 return -EMSGSIZE;
1700 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1701 if (!cmd_info)
1702 return -EMSGSIZE;
4a6bb6d3
SF		 1703 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT,
1704 rocker_port->pport))
5111f80c
SF		 1705 return -EMSGSIZE;
1706 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1707 !!(rocker_port->brport_flags & BR_LEARNING)))
1708 return -EMSGSIZE;
1709 rocker_tlv_nest_end(desc_info, cmd_info);
1710 return 0;
1711}
1712
4b8ac966
JP		 1713static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1714 struct ethtool_cmd *ecmd)
1715{
1716 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1717 rocker_cmd_get_port_settings_prep, NULL,
1718 rocker_cmd_get_port_settings_ethtool_proc,
1719 ecmd, false);
1720}
1721
1722static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1723 unsigned char *macaddr)
1724{
1725 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1726 rocker_cmd_get_port_settings_prep, NULL,
1727 rocker_cmd_get_port_settings_macaddr_proc,
1728 macaddr, false);
1729}
1730
1731static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1732 struct ethtool_cmd *ecmd)
1733{
1734 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1735 rocker_cmd_set_port_settings_ethtool_prep,
1736 ecmd, NULL, NULL, false);
1737}
1738
1739static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1740 unsigned char *macaddr)
1741{
1742 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1743 rocker_cmd_set_port_settings_macaddr_prep,
1744 macaddr, NULL, NULL, false);
1745}
1746
5111f80c
SF		 1747static int rocker_port_set_learning(struct rocker_port *rocker_port)
1748{
1749 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1750 rocker_cmd_set_port_learning_prep,
1751 NULL, NULL, NULL, false);
1752}
1753
9f6bbf7c
SF		 1754static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1755 struct rocker_flow_tbl_entry *entry)
1756{
4a6bb6d3
SF		 1757 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1758 entry->key.ig_port.in_pport))
9f6bbf7c 1759 return -EMSGSIZE;
4a6bb6d3
SF		 1760 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1761 entry->key.ig_port.in_pport_mask))
9f6bbf7c
SF		 1762 return -EMSGSIZE;
1763 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1764 entry->key.ig_port.goto_tbl))
1765 return -EMSGSIZE;
1766
1767 return 0;
1768}
1769
1770static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1771 struct rocker_flow_tbl_entry *entry)
1772{
4a6bb6d3
SF		 1773 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1774 entry->key.vlan.in_pport))
9f6bbf7c 1775 return -EMSGSIZE;
9b03c71f
JP		 1776 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1777 entry->key.vlan.vlan_id))
9f6bbf7c 1778 return -EMSGSIZE;
9b03c71f
JP		 1779 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1780 entry->key.vlan.vlan_id_mask))
9f6bbf7c
SF		 1781 return -EMSGSIZE;
1782 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1783 entry->key.vlan.goto_tbl))
1784 return -EMSGSIZE;
1785 if (entry->key.vlan.untagged &&
9b03c71f
JP		 1786 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1787 entry->key.vlan.new_vlan_id))
9f6bbf7c
SF		 1788 return -EMSGSIZE;
1789
1790 return 0;
1791}
1792
1793static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1794 struct rocker_flow_tbl_entry *entry)
1795{
4a6bb6d3
SF		 1796 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1797 entry->key.term_mac.in_pport))
9f6bbf7c 1798 return -EMSGSIZE;
4a6bb6d3
SF		 1799 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1800 entry->key.term_mac.in_pport_mask))
9f6bbf7c 1801 return -EMSGSIZE;
9b03c71f
JP		 1802 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1803 entry->key.term_mac.eth_type))
9f6bbf7c
SF		 1804 return -EMSGSIZE;
1805 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1806 ETH_ALEN, entry->key.term_mac.eth_dst))
1807 return -EMSGSIZE;
1808 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1809 ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1810 return -EMSGSIZE;
9b03c71f
JP		 1811 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1812 entry->key.term_mac.vlan_id))
9f6bbf7c 1813 return -EMSGSIZE;
9b03c71f
JP		 1814 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1815 entry->key.term_mac.vlan_id_mask))
9f6bbf7c
SF		 1816 return -EMSGSIZE;
1817 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1818 entry->key.term_mac.goto_tbl))
1819 return -EMSGSIZE;
1820 if (entry->key.term_mac.copy_to_cpu &&
1821 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1822 entry->key.term_mac.copy_to_cpu))
1823 return -EMSGSIZE;
1824
1825 return 0;
1826}
1827
1828static int
1829rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1830 struct rocker_flow_tbl_entry *entry)
1831{
9b03c71f
JP		 1832 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1833 entry->key.ucast_routing.eth_type))
9f6bbf7c 1834 return -EMSGSIZE;
9b03c71f
JP		 1835 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1836 entry->key.ucast_routing.dst4))
9f6bbf7c 1837 return -EMSGSIZE;
9b03c71f
JP		 1838 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1839 entry->key.ucast_routing.dst4_mask))
9f6bbf7c
SF		 1840 return -EMSGSIZE;
1841 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1842 entry->key.ucast_routing.goto_tbl))
1843 return -EMSGSIZE;
1844 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1845 entry->key.ucast_routing.group_id))
1846 return -EMSGSIZE;
1847
1848 return 0;
1849}
1850
1851static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
1852 struct rocker_flow_tbl_entry *entry)
1853{
1854 if (entry->key.bridge.has_eth_dst &&
1855 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1856 ETH_ALEN, entry->key.bridge.eth_dst))
1857 return -EMSGSIZE;
1858 if (entry->key.bridge.has_eth_dst_mask &&
1859 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1860 ETH_ALEN, entry->key.bridge.eth_dst_mask))
1861 return -EMSGSIZE;
1862 if (entry->key.bridge.vlan_id &&
9b03c71f
JP		 1863 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1864 entry->key.bridge.vlan_id))
9f6bbf7c
SF		 1865 return -EMSGSIZE;
1866 if (entry->key.bridge.tunnel_id &&
1867 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
1868 entry->key.bridge.tunnel_id))
1869 return -EMSGSIZE;
1870 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1871 entry->key.bridge.goto_tbl))
1872 return -EMSGSIZE;
1873 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1874 entry->key.bridge.group_id))
1875 return -EMSGSIZE;
1876 if (entry->key.bridge.copy_to_cpu &&
1877 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1878 entry->key.bridge.copy_to_cpu))
1879 return -EMSGSIZE;
1880
1881 return 0;
1882}
1883
1884static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
1885 struct rocker_flow_tbl_entry *entry)
1886{
4a6bb6d3
SF		 1887 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
1888 entry->key.acl.in_pport))
9f6bbf7c 1889 return -EMSGSIZE;
4a6bb6d3
SF		 1890 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
1891 entry->key.acl.in_pport_mask))
9f6bbf7c
SF		 1892 return -EMSGSIZE;
1893 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1894 ETH_ALEN, entry->key.acl.eth_src))
1895 return -EMSGSIZE;
1896 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
1897 ETH_ALEN, entry->key.acl.eth_src_mask))
1898 return -EMSGSIZE;
1899 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1900 ETH_ALEN, entry->key.acl.eth_dst))
1901 return -EMSGSIZE;
1902 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1903 ETH_ALEN, entry->key.acl.eth_dst_mask))
1904 return -EMSGSIZE;
9b03c71f
JP		 1905 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1906 entry->key.acl.eth_type))
9f6bbf7c 1907 return -EMSGSIZE;
9b03c71f
JP		 1908 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1909 entry->key.acl.vlan_id))
9f6bbf7c 1910 return -EMSGSIZE;
9b03c71f
JP		 1911 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1912 entry->key.acl.vlan_id_mask))
9f6bbf7c
SF		 1913 return -EMSGSIZE;
1914
1915 switch (ntohs(entry->key.acl.eth_type)) {
1916 case ETH_P_IP:
1917 case ETH_P_IPV6:
1918 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
1919 entry->key.acl.ip_proto))
1920 return -EMSGSIZE;
1921 if (rocker_tlv_put_u8(desc_info,
1922 ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
1923 entry->key.acl.ip_proto_mask))
1924 return -EMSGSIZE;
1925 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
1926 entry->key.acl.ip_tos & 0x3f))
1927 return -EMSGSIZE;
1928 if (rocker_tlv_put_u8(desc_info,
1929 ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
1930 entry->key.acl.ip_tos_mask & 0x3f))
1931 return -EMSGSIZE;
1932 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
1933 (entry->key.acl.ip_tos & 0xc0) >> 6))
1934 return -EMSGSIZE;
1935 if (rocker_tlv_put_u8(desc_info,
1936 ROCKER_TLV_OF_DPA_IP_ECN_MASK,
1937 (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
1938 return -EMSGSIZE;
1939 break;
1940 }
1941
1942 if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
1943 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1944 entry->key.acl.group_id))
1945 return -EMSGSIZE;
1946
1947 return 0;
1948}
1949
1950static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
1951 struct rocker_port *rocker_port,
1952 struct rocker_desc_info *desc_info,
1953 void *priv)
1954{
1955 struct rocker_flow_tbl_entry *entry = priv;
1956 struct rocker_tlv *cmd_info;
1957 int err = 0;
1958
c1beeef7 1959 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
9f6bbf7c
SF		 1960 return -EMSGSIZE;
1961 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1962 if (!cmd_info)
1963 return -EMSGSIZE;
1964 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
1965 entry->key.tbl_id))
1966 return -EMSGSIZE;
1967 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
1968 entry->key.priority))
1969 return -EMSGSIZE;
1970 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
1971 return -EMSGSIZE;
1972 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1973 entry->cookie))
1974 return -EMSGSIZE;
1975
1976 switch (entry->key.tbl_id) {
1977 case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
1978 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
1979 break;
1980 case ROCKER_OF_DPA_TABLE_ID_VLAN:
1981 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
1982 break;
1983 case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
1984 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
1985 break;
1986 case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
1987 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
1988 break;
1989 case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
1990 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
1991 break;
1992 case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
1993 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
1994 break;
1995 default:
1996 err = -ENOTSUPP;
1997 break;
1998 }
1999
2000 if (err)
2001 return err;
2002
2003 rocker_tlv_nest_end(desc_info, cmd_info);
2004
2005 return 0;
2006}
2007
2008static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
2009 struct rocker_port *rocker_port,
2010 struct rocker_desc_info *desc_info,
2011 void *priv)
2012{
2013 const struct rocker_flow_tbl_entry *entry = priv;
2014 struct rocker_tlv *cmd_info;
2015
c1beeef7 2016 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
9f6bbf7c
SF		 2017 return -EMSGSIZE;
2018 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2019 if (!cmd_info)
2020 return -EMSGSIZE;
2021 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
2022 entry->cookie))
2023 return -EMSGSIZE;
2024 rocker_tlv_nest_end(desc_info, cmd_info);
2025
2026 return 0;
2027}
2028
2029static int
2030rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
2031 struct rocker_group_tbl_entry *entry)
2032{
4a6bb6d3 2033 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
9f6bbf7c
SF		 2034 ROCKER_GROUP_PORT_GET(entry->group_id)))
2035 return -EMSGSIZE;
2036 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2037 entry->l2_interface.pop_vlan))
2038 return -EMSGSIZE;
2039
2040 return 0;
2041}
2042
2043static int
2044rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2045 struct rocker_group_tbl_entry *entry)
2046{
2047 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2048 entry->l2_rewrite.group_id))
2049 return -EMSGSIZE;
2050 if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2051 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2052 ETH_ALEN, entry->l2_rewrite.eth_src))
2053 return -EMSGSIZE;
2054 if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2055 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2056 ETH_ALEN, entry->l2_rewrite.eth_dst))
2057 return -EMSGSIZE;
2058 if (entry->l2_rewrite.vlan_id &&
9b03c71f
JP		 2059 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2060 entry->l2_rewrite.vlan_id))
9f6bbf7c
SF		 2061 return -EMSGSIZE;
2062
2063 return 0;
2064}
2065
2066static int
2067rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2068 struct rocker_group_tbl_entry *entry)
2069{
2070 int i;
2071 struct rocker_tlv *group_ids;
2072
2073 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2074 entry->group_count))
2075 return -EMSGSIZE;
2076
2077 group_ids = rocker_tlv_nest_start(desc_info,
2078 ROCKER_TLV_OF_DPA_GROUP_IDS);
2079 if (!group_ids)
2080 return -EMSGSIZE;
2081
2082 for (i = 0; i < entry->group_count; i++)
2083 /* Note TLV array is 1-based */
2084 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2085 return -EMSGSIZE;
2086
2087 rocker_tlv_nest_end(desc_info, group_ids);
2088
2089 return 0;
2090}
2091
2092static int
2093rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2094 struct rocker_group_tbl_entry *entry)
2095{
2096 if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2097 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2098 ETH_ALEN, entry->l3_unicast.eth_src))
2099 return -EMSGSIZE;
2100 if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2101 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2102 ETH_ALEN, entry->l3_unicast.eth_dst))
2103 return -EMSGSIZE;
2104 if (entry->l3_unicast.vlan_id &&
9b03c71f
JP		 2105 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2106 entry->l3_unicast.vlan_id))
9f6bbf7c
SF		 2107 return -EMSGSIZE;
2108 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2109 entry->l3_unicast.ttl_check))
2110 return -EMSGSIZE;
2111 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2112 entry->l3_unicast.group_id))
2113 return -EMSGSIZE;
2114
2115 return 0;
2116}
2117
2118static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2119 struct rocker_port *rocker_port,
2120 struct rocker_desc_info *desc_info,
2121 void *priv)
2122{
2123 struct rocker_group_tbl_entry *entry = priv;
2124 struct rocker_tlv *cmd_info;
2125 int err = 0;
2126
2127 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2128 return -EMSGSIZE;
2129 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2130 if (!cmd_info)
2131 return -EMSGSIZE;
2132
2133 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2134 entry->group_id))
2135 return -EMSGSIZE;
2136
2137 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2138 case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2139 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2140 break;
2141 case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2142 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2143 break;
2144 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2145 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2146 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2147 break;
2148 case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2149 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2150 break;
2151 default:
2152 err = -ENOTSUPP;
2153 break;
2154 }
2155
2156 if (err)
2157 return err;
2158
2159 rocker_tlv_nest_end(desc_info, cmd_info);
2160
2161 return 0;
2162}
2163
2164static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2165 struct rocker_port *rocker_port,
2166 struct rocker_desc_info *desc_info,
2167 void *priv)
2168{
2169 const struct rocker_group_tbl_entry *entry = priv;
2170 struct rocker_tlv *cmd_info;
2171
2172 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2173 return -EMSGSIZE;
2174 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2175 if (!cmd_info)
2176 return -EMSGSIZE;
2177 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2178 entry->group_id))
2179 return -EMSGSIZE;
2180 rocker_tlv_nest_end(desc_info, cmd_info);
2181
2182 return 0;
2183}
2184
c1beeef7
SF		 2185/***************************************************
2186 * Flow, group, FDB, internal VLAN and neigh tables
2187 ***************************************************/
9f6bbf7c
SF		 2188
2189static int rocker_init_tbls(struct rocker *rocker)
2190{
2191 hash_init(rocker->flow_tbl);
2192 spin_lock_init(&rocker->flow_tbl_lock);
2193
2194 hash_init(rocker->group_tbl);
2195 spin_lock_init(&rocker->group_tbl_lock);
2196
2197 hash_init(rocker->fdb_tbl);
2198 spin_lock_init(&rocker->fdb_tbl_lock);
2199
2200 hash_init(rocker->internal_vlan_tbl);
2201 spin_lock_init(&rocker->internal_vlan_tbl_lock);
2202
c1beeef7
SF		 2203 hash_init(rocker->neigh_tbl);
2204 spin_lock_init(&rocker->neigh_tbl_lock);
2205
9f6bbf7c
SF		 2206 return 0;
2207}
2208
2209static void rocker_free_tbls(struct rocker *rocker)
2210{
2211 unsigned long flags;
2212 struct rocker_flow_tbl_entry *flow_entry;
2213 struct rocker_group_tbl_entry *group_entry;
2214 struct rocker_fdb_tbl_entry *fdb_entry;
2215 struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
c1beeef7 2216 struct rocker_neigh_tbl_entry *neigh_entry;
9f6bbf7c
SF		 2217 struct hlist_node *tmp;
2218 int bkt;
2219
2220 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2221 hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2222 hash_del(&flow_entry->entry);
2223 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2224
2225 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2226 hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2227 hash_del(&group_entry->entry);
2228 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2229
2230 spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2231 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2232 hash_del(&fdb_entry->entry);
2233 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2234
2235 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2236 hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2237 tmp, internal_vlan_entry, entry)
2238 hash_del(&internal_vlan_entry->entry);
2239 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
c1beeef7
SF		 2240
2241 spin_lock_irqsave(&rocker->neigh_tbl_lock, flags);
2242 hash_for_each_safe(rocker->neigh_tbl, bkt, tmp, neigh_entry, entry)
2243 hash_del(&neigh_entry->entry);
2244 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, flags);
9f6bbf7c
SF		 2245}
2246
2247static struct rocker_flow_tbl_entry *
2248rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2249{
2250 struct rocker_flow_tbl_entry *found;
c1beeef7 2251 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
9f6bbf7c
SF		 2252
2253 hash_for_each_possible(rocker->flow_tbl, found,
2254 entry, match->key_crc32) {
c1beeef7 2255 if (memcmp(&found->key, &match->key, key_len) == 0)
9f6bbf7c
SF		 2256 return found;
2257 }
2258
2259 return NULL;
2260}
2261
2262static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2263 struct rocker_flow_tbl_entry *match,
2264 bool nowait)
2265{
2266 struct rocker *rocker = rocker_port->rocker;
2267 struct rocker_flow_tbl_entry *found;
c1beeef7 2268 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
9f6bbf7c 2269 unsigned long flags;
9f6bbf7c 2270
c1beeef7 2271 match->key_crc32 = crc32(~0, &match->key, key_len);
9f6bbf7c
SF		 2272
2273 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2274
2275 found = rocker_flow_tbl_find(rocker, match);
2276
2277 if (found) {
c1beeef7
SF		 2278 match->cookie = found->cookie;
2279 hash_del(&found->entry);
2280 kfree(found);
2281 found = match;
2282 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
9f6bbf7c
SF		 2283 } else {
2284 found = match;
2285 found->cookie = rocker->flow_tbl_next_cookie++;
c1beeef7 2286 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
9f6bbf7c
SF		 2287 }
2288
c1beeef7 2289 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
9f6bbf7c
SF		 2290
2291 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2292
c1beeef7
SF		 2293 return rocker_cmd_exec(rocker, rocker_port,
2294 rocker_cmd_flow_tbl_add,
2295 found, NULL, NULL, nowait);
9f6bbf7c
SF		 2296}
2297
2298static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2299 struct rocker_flow_tbl_entry *match,
2300 bool nowait)
2301{
2302 struct rocker *rocker = rocker_port->rocker;
2303 struct rocker_flow_tbl_entry *found;
c1beeef7 2304 size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
9f6bbf7c 2305 unsigned long flags;
9f6bbf7c
SF		 2306 int err = 0;
2307
c1beeef7 2308 match->key_crc32 = crc32(~0, &match->key, key_len);
9f6bbf7c
SF		 2309
2310 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2311
2312 found = rocker_flow_tbl_find(rocker, match);
2313
2314 if (found) {
c1beeef7
SF		 2315 hash_del(&found->entry);
2316 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
9f6bbf7c
SF		 2317 }
2318
2319 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2320
2321 kfree(match);
2322
c1beeef7 2323 if (found) {
9f6bbf7c
SF		 2324 err = rocker_cmd_exec(rocker, rocker_port,
2325 rocker_cmd_flow_tbl_del,
2326 found, NULL, NULL, nowait);
2327 kfree(found);
2328 }
2329
2330 return err;
2331}
2332
2333static gfp_t rocker_op_flags_gfp(int flags)
2334{
2335 return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL;
2336}
2337
2338static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2339 int flags, struct rocker_flow_tbl_entry *entry)
2340{
2341 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2342
2343 if (flags & ROCKER_OP_FLAG_REMOVE)
2344 return rocker_flow_tbl_del(rocker_port, entry, nowait);
2345 else
2346 return rocker_flow_tbl_add(rocker_port, entry, nowait);
2347}
2348
2349static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
4a6bb6d3 2350 int flags, u32 in_pport, u32 in_pport_mask,
9f6bbf7c
SF		 2351 enum rocker_of_dpa_table_id goto_tbl)
2352{
2353 struct rocker_flow_tbl_entry *entry;
2354
2355 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2356 if (!entry)
2357 return -ENOMEM;
2358
2359 entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2360 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
4a6bb6d3
SF		 2361 entry->key.ig_port.in_pport = in_pport;
2362 entry->key.ig_port.in_pport_mask = in_pport_mask;
9f6bbf7c
SF		 2363 entry->key.ig_port.goto_tbl = goto_tbl;
2364
2365 return rocker_flow_tbl_do(rocker_port, flags, entry);
2366}
2367
2368static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
4a6bb6d3 2369 int flags, u32 in_pport,
9f6bbf7c
SF		 2370 __be16 vlan_id, __be16 vlan_id_mask,
2371 enum rocker_of_dpa_table_id goto_tbl,
2372 bool untagged, __be16 new_vlan_id)
2373{
2374 struct rocker_flow_tbl_entry *entry;
2375
2376 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2377 if (!entry)
2378 return -ENOMEM;
2379
2380 entry->key.priority = ROCKER_PRIORITY_VLAN;
2381 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
4a6bb6d3 2382 entry->key.vlan.in_pport = in_pport;
9f6bbf7c
SF		 2383 entry->key.vlan.vlan_id = vlan_id;
2384 entry->key.vlan.vlan_id_mask = vlan_id_mask;
2385 entry->key.vlan.goto_tbl = goto_tbl;
2386
2387 entry->key.vlan.untagged = untagged;
2388 entry->key.vlan.new_vlan_id = new_vlan_id;
2389
2390 return rocker_flow_tbl_do(rocker_port, flags, entry);
2391}
2392
2393static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
4a6bb6d3 2394 u32 in_pport, u32 in_pport_mask,
9f6bbf7c
SF		 2395 __be16 eth_type, const u8 *eth_dst,
2396 const u8 *eth_dst_mask, __be16 vlan_id,
2397 __be16 vlan_id_mask, bool copy_to_cpu,
2398 int flags)
2399{
2400 struct rocker_flow_tbl_entry *entry;
2401
2402 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2403 if (!entry)
2404 return -ENOMEM;
2405
2406 if (is_multicast_ether_addr(eth_dst)) {
2407 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2408 entry->key.term_mac.goto_tbl =
2409 ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2410 } else {
2411 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2412 entry->key.term_mac.goto_tbl =
2413 ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2414 }
2415
2416 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
4a6bb6d3
SF		 2417 entry->key.term_mac.in_pport = in_pport;
2418 entry->key.term_mac.in_pport_mask = in_pport_mask;
9f6bbf7c
SF		 2419 entry->key.term_mac.eth_type = eth_type;
2420 ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2421 ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2422 entry->key.term_mac.vlan_id = vlan_id;
2423 entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2424 entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2425
2426 return rocker_flow_tbl_do(rocker_port, flags, entry);
2427}
2428
2429static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2430 int flags,
2431 const u8 *eth_dst, const u8 *eth_dst_mask,
2432 __be16 vlan_id, u32 tunnel_id,
2433 enum rocker_of_dpa_table_id goto_tbl,
2434 u32 group_id, bool copy_to_cpu)
2435{
2436 struct rocker_flow_tbl_entry *entry;
2437 u32 priority;
2438 bool vlan_bridging = !!vlan_id;
2439 bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2440 bool wild = false;
2441
2442 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2443 if (!entry)
2444 return -ENOMEM;
2445
2446 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2447
2448 if (eth_dst) {
2449 entry->key.bridge.has_eth_dst = 1;
2450 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2451 }
2452 if (eth_dst_mask) {
2453 entry->key.bridge.has_eth_dst_mask = 1;
2454 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2455 if (memcmp(eth_dst_mask, ff_mac, ETH_ALEN))
2456 wild = true;
2457 }
2458
2459 priority = ROCKER_PRIORITY_UNKNOWN;
51ace887 2460 if (vlan_bridging && dflt && wild)
9f6bbf7c 2461 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
51ace887 2462 else if (vlan_bridging && dflt && !wild)
9f6bbf7c 2463 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
51ace887 2464 else if (vlan_bridging && !dflt)
9f6bbf7c 2465 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
51ace887 2466 else if (!vlan_bridging && dflt && wild)
9f6bbf7c 2467 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
51ace887 2468 else if (!vlan_bridging && dflt && !wild)
9f6bbf7c 2469 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
51ace887 2470 else if (!vlan_bridging && !dflt)
9f6bbf7c
SF		 2471 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2472
2473 entry->key.priority = priority;
2474 entry->key.bridge.vlan_id = vlan_id;
2475 entry->key.bridge.tunnel_id = tunnel_id;
2476 entry->key.bridge.goto_tbl = goto_tbl;
2477 entry->key.bridge.group_id = group_id;
2478 entry->key.bridge.copy_to_cpu = copy_to_cpu;
2479
2480 return rocker_flow_tbl_do(rocker_port, flags, entry);
2481}
2482
c1beeef7
SF		 2483static int rocker_flow_tbl_ucast4_routing(struct rocker_port *rocker_port,
2484 __be16 eth_type, __be32 dst,
2485 __be32 dst_mask, u32 priority,
2486 enum rocker_of_dpa_table_id goto_tbl,
2487 u32 group_id, int flags)
2488{
2489 struct rocker_flow_tbl_entry *entry;
2490
2491 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2492 if (!entry)
2493 return -ENOMEM;
2494
2495 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2496 entry->key.priority = priority;
2497 entry->key.ucast_routing.eth_type = eth_type;
2498 entry->key.ucast_routing.dst4 = dst;
2499 entry->key.ucast_routing.dst4_mask = dst_mask;
2500 entry->key.ucast_routing.goto_tbl = goto_tbl;
2501 entry->key.ucast_routing.group_id = group_id;
2502 entry->key_len = offsetof(struct rocker_flow_tbl_key,
2503 ucast_routing.group_id);
2504
2505 return rocker_flow_tbl_do(rocker_port, flags, entry);
2506}
2507
9f6bbf7c 2508static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
4a6bb6d3
SF		 2509 int flags, u32 in_pport,
2510 u32 in_pport_mask,
9f6bbf7c
SF		 2511 const u8 *eth_src, const u8 *eth_src_mask,
2512 const u8 *eth_dst, const u8 *eth_dst_mask,
2513 __be16 eth_type,
2514 __be16 vlan_id, __be16 vlan_id_mask,
2515 u8 ip_proto, u8 ip_proto_mask,
2516 u8 ip_tos, u8 ip_tos_mask,
2517 u32 group_id)
2518{
2519 u32 priority;
2520 struct rocker_flow_tbl_entry *entry;
2521
2522 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2523 if (!entry)
2524 return -ENOMEM;
2525
2526 priority = ROCKER_PRIORITY_ACL_NORMAL;
2527 if (eth_dst && eth_dst_mask) {
2528 if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0)
2529 priority = ROCKER_PRIORITY_ACL_DFLT;
2530 else if (is_link_local_ether_addr(eth_dst))
2531 priority = ROCKER_PRIORITY_ACL_CTRL;
2532 }
2533
2534 entry->key.priority = priority;
2535 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
4a6bb6d3
SF		 2536 entry->key.acl.in_pport = in_pport;
2537 entry->key.acl.in_pport_mask = in_pport_mask;
9f6bbf7c
SF		 2538
2539 if (eth_src)
2540 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2541 if (eth_src_mask)
2542 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2543 if (eth_dst)
2544 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2545 if (eth_dst_mask)
2546 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2547
2548 entry->key.acl.eth_type = eth_type;
2549 entry->key.acl.vlan_id = vlan_id;
2550 entry->key.acl.vlan_id_mask = vlan_id_mask;
2551 entry->key.acl.ip_proto = ip_proto;
2552 entry->key.acl.ip_proto_mask = ip_proto_mask;
2553 entry->key.acl.ip_tos = ip_tos;
2554 entry->key.acl.ip_tos_mask = ip_tos_mask;
2555 entry->key.acl.group_id = group_id;
2556
2557 return rocker_flow_tbl_do(rocker_port, flags, entry);
2558}
2559
2560static struct rocker_group_tbl_entry *
2561rocker_group_tbl_find(struct rocker *rocker,
2562 struct rocker_group_tbl_entry *match)
2563{
2564 struct rocker_group_tbl_entry *found;
2565
2566 hash_for_each_possible(rocker->group_tbl, found,
2567 entry, match->group_id) {
2568 if (found->group_id == match->group_id)
2569 return found;
2570 }
2571
2572 return NULL;
2573}
2574
2575static void rocker_group_tbl_entry_free(struct rocker_group_tbl_entry *entry)
2576{
2577 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2578 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2579 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2580 kfree(entry->group_ids);
2581 break;
2582 default:
2583 break;
2584 }
2585 kfree(entry);
2586}
2587
2588static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2589 struct rocker_group_tbl_entry *match,
2590 bool nowait)
2591{
2592 struct rocker *rocker = rocker_port->rocker;
2593 struct rocker_group_tbl_entry *found;
2594 unsigned long flags;
9f6bbf7c
SF		 2595
2596 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2597
2598 found = rocker_group_tbl_find(rocker, match);
2599
2600 if (found) {
2601 hash_del(&found->entry);
2602 rocker_group_tbl_entry_free(found);
2603 found = match;
2604 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2605 } else {
2606 found = match;
2607 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2608 }
2609
2610 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2611
2612 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2613
c1beeef7
SF		 2614 return rocker_cmd_exec(rocker, rocker_port,
2615 rocker_cmd_group_tbl_add,
2616 found, NULL, NULL, nowait);
9f6bbf7c
SF		 2617}
2618
2619static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2620 struct rocker_group_tbl_entry *match,
2621 bool nowait)
2622{
2623 struct rocker *rocker = rocker_port->rocker;
2624 struct rocker_group_tbl_entry *found;
2625 unsigned long flags;
2626 int err = 0;
2627
2628 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2629
2630 found = rocker_group_tbl_find(rocker, match);
2631
2632 if (found) {
2633 hash_del(&found->entry);
2634 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2635 }
2636
2637 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2638
2639 rocker_group_tbl_entry_free(match);
2640
2641 if (found) {
2642 err = rocker_cmd_exec(rocker, rocker_port,
2643 rocker_cmd_group_tbl_del,
2644 found, NULL, NULL, nowait);
2645 rocker_group_tbl_entry_free(found);
2646 }
2647
2648 return err;
2649}
2650
2651static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2652 int flags, struct rocker_group_tbl_entry *entry)
2653{
2654 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2655
2656 if (flags & ROCKER_OP_FLAG_REMOVE)
2657 return rocker_group_tbl_del(rocker_port, entry, nowait);
2658 else
2659 return rocker_group_tbl_add(rocker_port, entry, nowait);
2660}
2661
2662static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2663 int flags, __be16 vlan_id,
4a6bb6d3 2664 u32 out_pport, int pop_vlan)
9f6bbf7c
SF		 2665{
2666 struct rocker_group_tbl_entry *entry;
2667
2668 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2669 if (!entry)
2670 return -ENOMEM;
2671
4a6bb6d3 2672 entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
9f6bbf7c
SF		 2673 entry->l2_interface.pop_vlan = pop_vlan;
2674
2675 return rocker_group_tbl_do(rocker_port, flags, entry);
2676}
2677
2678static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2679 int flags, u8 group_count,
2680 u32 *group_ids, u32 group_id)
2681{
2682 struct rocker_group_tbl_entry *entry;
2683
2684 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2685 if (!entry)
2686 return -ENOMEM;
2687
2688 entry->group_id = group_id;
2689 entry->group_count = group_count;
2690
2691 entry->group_ids = kcalloc(group_count, sizeof(u32),
2692 rocker_op_flags_gfp(flags));
2693 if (!entry->group_ids) {
2694 kfree(entry);
2695 return -ENOMEM;
2696 }
2697 memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2698
2699 return rocker_group_tbl_do(rocker_port, flags, entry);
2700}
2701
2702static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2703 int flags, __be16 vlan_id,
2704 u8 group_count, u32 *group_ids,
2705 u32 group_id)
2706{
2707 return rocker_group_l2_fan_out(rocker_port, flags,
2708 group_count, group_ids,
2709 group_id);
2710}
2711
c1beeef7
SF		 2712static int rocker_group_l3_unicast(struct rocker_port *rocker_port,
2713 int flags, u32 index, u8 *src_mac,
2714 u8 *dst_mac, __be16 vlan_id,
2715 bool ttl_check, u32 pport)
2716{
2717 struct rocker_group_tbl_entry *entry;
2718
2719 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2720 if (!entry)
2721 return -ENOMEM;
2722
2723 entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
2724 if (src_mac)
2725 ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
2726 if (dst_mac)
2727 ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
2728 entry->l3_unicast.vlan_id = vlan_id;
2729 entry->l3_unicast.ttl_check = ttl_check;
2730 entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
2731
2732 return rocker_group_tbl_do(rocker_port, flags, entry);
2733}
2734
2735static struct rocker_neigh_tbl_entry *
2736 rocker_neigh_tbl_find(struct rocker *rocker, __be32 ip_addr)
2737{
2738 struct rocker_neigh_tbl_entry *found;
2739
8ea69638 2740 hash_for_each_possible(rocker->neigh_tbl, found, entry, (u32)ip_addr)
c1beeef7
SF		 2741 if (found->ip_addr == ip_addr)
2742 return found;
2743
2744 return NULL;
2745}
2746
2747static void _rocker_neigh_add(struct rocker *rocker,
2748 struct rocker_neigh_tbl_entry *entry)
2749{
2750 entry->index = rocker->neigh_tbl_next_index++;
2751 entry->ref_count++;
8ea69638 2752 hash_add(rocker->neigh_tbl, &entry->entry, (u32)entry->ip_addr);
c1beeef7
SF		 2753}
2754
2755static void _rocker_neigh_del(struct rocker *rocker,
2756 struct rocker_neigh_tbl_entry *entry)
2757{
2758 if (--entry->ref_count == 0) {
2759 hash_del(&entry->entry);
2760 kfree(entry);
2761 }
2762}
2763
2764static void _rocker_neigh_update(struct rocker *rocker,
2765 struct rocker_neigh_tbl_entry *entry,
2766 u8 *eth_dst, bool ttl_check)
2767{
2768 if (eth_dst) {
2769 ether_addr_copy(entry->eth_dst, eth_dst);
2770 entry->ttl_check = ttl_check;
2771 } else {
2772 entry->ref_count++;
2773 }
2774}
2775
2776static int rocker_port_ipv4_neigh(struct rocker_port *rocker_port,
2777 int flags, __be32 ip_addr, u8 *eth_dst)
2778{
2779 struct rocker *rocker = rocker_port->rocker;
2780 struct rocker_neigh_tbl_entry *entry;
2781 struct rocker_neigh_tbl_entry *found;
2782 unsigned long lock_flags;
2783 __be16 eth_type = htons(ETH_P_IP);
2784 enum rocker_of_dpa_table_id goto_tbl =
2785 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2786 u32 group_id;
2787 u32 priority = 0;
2788 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2789 bool updating;
2790 bool removing;
2791 int err = 0;
2792
2793 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2794 if (!entry)
2795 return -ENOMEM;
2796
2797 spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2798
2799 found = rocker_neigh_tbl_find(rocker, ip_addr);
2800
2801 updating = found && adding;
2802 removing = found && !adding;
2803 adding = !found && adding;
2804
2805 if (adding) {
2806 entry->ip_addr = ip_addr;
2807 entry->dev = rocker_port->dev;
2808 ether_addr_copy(entry->eth_dst, eth_dst);
2809 entry->ttl_check = true;
2810 _rocker_neigh_add(rocker, entry);
2811 } else if (removing) {
2812 memcpy(entry, found, sizeof(*entry));
2813 _rocker_neigh_del(rocker, found);
2814 } else if (updating) {
2815 _rocker_neigh_update(rocker, found, eth_dst, true);
2816 memcpy(entry, found, sizeof(*entry));
2817 } else {
2818 err = -ENOENT;
2819 }
2820
2821 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2822
2823 if (err)
2824 goto err_out;
2825
2826 /* For each active neighbor, we have an L3 unicast group and
2827 * a /32 route to the neighbor, which uses the L3 unicast
2828 * group. The L3 unicast group can also be referred to by
2829 * other routes' nexthops.
2830 */
2831
2832 err = rocker_group_l3_unicast(rocker_port, flags,
2833 entry->index,
2834 rocker_port->dev->dev_addr,
2835 entry->eth_dst,
2836 rocker_port->internal_vlan_id,
2837 entry->ttl_check,
2838 rocker_port->pport);
2839 if (err) {
2840 netdev_err(rocker_port->dev,
2841 "Error (%d) L3 unicast group index %d\n",
2842 err, entry->index);
2843 goto err_out;
2844 }
2845
2846 if (adding || removing) {
2847 group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
2848 err = rocker_flow_tbl_ucast4_routing(rocker_port,
2849 eth_type, ip_addr,
2850 inet_make_mask(32),
2851 priority, goto_tbl,
2852 group_id, flags);
2853
2854 if (err)
2855 netdev_err(rocker_port->dev,
2856 "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
2857 err, &entry->ip_addr, group_id);
2858 }
2859
2860err_out:
2861 if (!adding)
2862 kfree(entry);
2863
2864 return err;
2865}
2866
2867static int rocker_port_ipv4_resolve(struct rocker_port *rocker_port,
2868 __be32 ip_addr)
2869{
2870 struct net_device *dev = rocker_port->dev;
8ea69638 2871 struct neighbour *n = __ipv4_neigh_lookup(dev, (u32)ip_addr);
c1beeef7
SF		 2872 int err = 0;
2873
2874 if (!n)
2875 n = neigh_create(&arp_tbl, &ip_addr, dev);
2876 if (!n)
2877 return -ENOMEM;
2878
2879 /* If the neigh is already resolved, then go ahead and
2880 * install the entry, otherwise start the ARP process to
2881 * resolve the neigh.
2882 */
2883
2884 if (n->nud_state & NUD_VALID)
2885 err = rocker_port_ipv4_neigh(rocker_port, 0, ip_addr, n->ha);
2886 else
2887 neigh_event_send(n, NULL);
2888
2889 return err;
2890}
2891
2892static int rocker_port_ipv4_nh(struct rocker_port *rocker_port, int flags,
2893 __be32 ip_addr, u32 *index)
2894{
2895 struct rocker *rocker = rocker_port->rocker;
2896 struct rocker_neigh_tbl_entry *entry;
2897 struct rocker_neigh_tbl_entry *found;
2898 unsigned long lock_flags;
2899 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2900 bool updating;
2901 bool removing;
2902 bool resolved = true;
2903 int err = 0;
2904
2905 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2906 if (!entry)
2907 return -ENOMEM;
2908
2909 spin_lock_irqsave(&rocker->neigh_tbl_lock, lock_flags);
2910
2911 found = rocker_neigh_tbl_find(rocker, ip_addr);
2912 if (found)
2913 *index = found->index;
2914
2915 updating = found && adding;
2916 removing = found && !adding;
2917 adding = !found && adding;
2918
2919 if (adding) {
2920 entry->ip_addr = ip_addr;
2921 entry->dev = rocker_port->dev;
2922 _rocker_neigh_add(rocker, entry);
2923 *index = entry->index;
2924 resolved = false;
2925 } else if (removing) {
2926 _rocker_neigh_del(rocker, found);
2927 } else if (updating) {
2928 _rocker_neigh_update(rocker, found, NULL, false);
2929 resolved = !is_zero_ether_addr(found->eth_dst);
2930 } else {
2931 err = -ENOENT;
2932 }
2933
2934 spin_unlock_irqrestore(&rocker->neigh_tbl_lock, lock_flags);
2935
2936 if (!adding)
2937 kfree(entry);
2938
2939 if (err)
2940 return err;
2941
2942 /* Resolved means neigh ip_addr is resolved to neigh mac. */
2943
2944 if (!resolved)
2945 err = rocker_port_ipv4_resolve(rocker_port, ip_addr);
2946
2947 return err;
2948}
2949
6c707945
SF		 2950static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
2951 int flags, __be16 vlan_id)
2952{
2953 struct rocker_port *p;
2954 struct rocker *rocker = rocker_port->rocker;
2955 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2956 u32 group_ids[rocker->port_count];
2957 u8 group_count = 0;
2958 int err;
2959 int i;
2960
2961 /* Adjust the flood group for this VLAN. The flood group
2962 * references an L2 interface group for each port in this
2963 * VLAN.
2964 */
2965
2966 for (i = 0; i < rocker->port_count; i++) {
2967 p = rocker->ports[i];
2968 if (!rocker_port_is_bridged(p))
2969 continue;
2970 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
2971 group_ids[group_count++] =
4a6bb6d3 2972 ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
6c707945
SF		 2973 }
2974 }
2975
2976 /* If there are no bridged ports in this VLAN, we're done */
2977 if (group_count == 0)
2978 return 0;
2979
2980 err = rocker_group_l2_flood(rocker_port, flags, vlan_id,
2981 group_count, group_ids,
2982 group_id);
2983 if (err)
2984 netdev_err(rocker_port->dev,
2985 "Error (%d) port VLAN l2 flood group\n", err);
2986
2987 return err;
2988}
2989
2990static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
2991 int flags, __be16 vlan_id,
2992 bool pop_vlan)
2993{
2994 struct rocker *rocker = rocker_port->rocker;
2995 struct rocker_port *p;
2996 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
4a6bb6d3 2997 u32 out_pport;
6c707945
SF		 2998 int ref = 0;
2999 int err;
3000 int i;
3001
3002 /* An L2 interface group for this port in this VLAN, but
3003 * only when port STP state is LEARNING|FORWARDING.
3004 */
3005
3006 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3007 rocker_port->stp_state == BR_STATE_FORWARDING) {
4a6bb6d3 3008 out_pport = rocker_port->pport;
6c707945 3009 err = rocker_group_l2_interface(rocker_port, flags,
4a6bb6d3 3010 vlan_id, out_pport,
6c707945
SF		 3011 pop_vlan);
3012 if (err) {
3013 netdev_err(rocker_port->dev,
4a6bb6d3
SF		 3014 "Error (%d) port VLAN l2 group for pport %d\n",
3015 err, out_pport);
6c707945
SF		 3016 return err;
3017 }
3018 }
3019
3020 /* An L2 interface group for this VLAN to CPU port.
3021 * Add when first port joins this VLAN and destroy when
3022 * last port leaves this VLAN.
3023 */
3024
3025 for (i = 0; i < rocker->port_count; i++) {
3026 p = rocker->ports[i];
3027 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
3028 ref++;
3029 }
3030
3031 if ((!adding || ref != 1) && (adding || ref != 0))
3032 return 0;
3033
4a6bb6d3 3034 out_pport = 0;
6c707945 3035 err = rocker_group_l2_interface(rocker_port, flags,
4a6bb6d3 3036 vlan_id, out_pport,
6c707945
SF		 3037 pop_vlan);
3038 if (err) {
3039 netdev_err(rocker_port->dev,
3040 "Error (%d) port VLAN l2 group for CPU port\n", err);
3041 return err;
3042 }
3043
3044 return 0;
3045}
3046
9f6bbf7c
SF		 3047static struct rocker_ctrl {
3048 const u8 *eth_dst;
3049 const u8 *eth_dst_mask;
11e6c65a 3050 __be16 eth_type;
9f6bbf7c
SF		 3051 bool acl;
3052 bool bridge;
3053 bool term;
3054 bool copy_to_cpu;
3055} rocker_ctrls[] = {
3056 [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
3057 /* pass link local multicast pkts up to CPU for filtering */
3058 .eth_dst = ll_mac,
3059 .eth_dst_mask = ll_mask,
3060 .acl = true,
3061 },
3062 [ROCKER_CTRL_LOCAL_ARP] = {
3063 /* pass local ARP pkts up to CPU */
3064 .eth_dst = zero_mac,
3065 .eth_dst_mask = zero_mac,
3066 .eth_type = htons(ETH_P_ARP),
3067 .acl = true,
3068 },
3069 [ROCKER_CTRL_IPV4_MCAST] = {
3070 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
3071 .eth_dst = ipv4_mcast,
3072 .eth_dst_mask = ipv4_mask,
3073 .eth_type = htons(ETH_P_IP),
3074 .term = true,
3075 .copy_to_cpu = true,
3076 },
3077 [ROCKER_CTRL_IPV6_MCAST] = {
3078 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
3079 .eth_dst = ipv6_mcast,
3080 .eth_dst_mask = ipv6_mask,
3081 .eth_type = htons(ETH_P_IPV6),
3082 .term = true,
3083 .copy_to_cpu = true,
3084 },
3085 [ROCKER_CTRL_DFLT_BRIDGING] = {
3086 /* flood any pkts on vlan */
3087 .bridge = true,
3088 .copy_to_cpu = true,
3089 },
3090};
3091
3092static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
3093 int flags, struct rocker_ctrl *ctrl,
3094 __be16 vlan_id)
3095{
4a6bb6d3
SF		 3096 u32 in_pport = rocker_port->pport;
3097 u32 in_pport_mask = 0xffffffff;
3098 u32 out_pport = 0;
9f6bbf7c
SF		 3099 u8 *eth_src = NULL;
3100 u8 *eth_src_mask = NULL;
3101 __be16 vlan_id_mask = htons(0xffff);
3102 u8 ip_proto = 0;
3103 u8 ip_proto_mask = 0;
3104 u8 ip_tos = 0;
3105 u8 ip_tos_mask = 0;
4a6bb6d3 3106 u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
9f6bbf7c
SF		 3107 int err;
3108
3109 err = rocker_flow_tbl_acl(rocker_port, flags,
4a6bb6d3 3110 in_pport, in_pport_mask,
9f6bbf7c
SF		 3111 eth_src, eth_src_mask,
3112 ctrl->eth_dst, ctrl->eth_dst_mask,
3113 ctrl->eth_type,
3114 vlan_id, vlan_id_mask,
3115 ip_proto, ip_proto_mask,
3116 ip_tos, ip_tos_mask,
3117 group_id);
3118
3119 if (err)
3120 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
3121
3122 return err;
3123}
3124
6c707945
SF		 3125static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
3126 int flags, struct rocker_ctrl *ctrl,
3127 __be16 vlan_id)
3128{
3129 enum rocker_of_dpa_table_id goto_tbl =
3130 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3131 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
3132 u32 tunnel_id = 0;
3133 int err;
3134
3135 if (!rocker_port_is_bridged(rocker_port))
3136 return 0;
3137
3138 err = rocker_flow_tbl_bridge(rocker_port, flags,
3139 ctrl->eth_dst, ctrl->eth_dst_mask,
3140 vlan_id, tunnel_id,
3141 goto_tbl, group_id, ctrl->copy_to_cpu);
3142
3143 if (err)
3144 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
3145
3146 return err;
3147}
3148
9f6bbf7c
SF		 3149static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
3150 int flags, struct rocker_ctrl *ctrl,
3151 __be16 vlan_id)
3152{
4a6bb6d3 3153 u32 in_pport_mask = 0xffffffff;
9f6bbf7c
SF		 3154 __be16 vlan_id_mask = htons(0xffff);
3155 int err;
3156
3157 if (ntohs(vlan_id) == 0)
3158 vlan_id = rocker_port->internal_vlan_id;
3159
3160 err = rocker_flow_tbl_term_mac(rocker_port,
4a6bb6d3 3161 rocker_port->pport, in_pport_mask,
9f6bbf7c
SF		 3162 ctrl->eth_type, ctrl->eth_dst,
3163 ctrl->eth_dst_mask, vlan_id,
3164 vlan_id_mask, ctrl->copy_to_cpu,
3165 flags);
3166
3167 if (err)
3168 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
3169
3170 return err;
3171}
3172
3173static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, int flags,
3174 struct rocker_ctrl *ctrl, __be16 vlan_id)
3175{
3176 if (ctrl->acl)
3177 return rocker_port_ctrl_vlan_acl(rocker_port, flags,
3178 ctrl, vlan_id);
6c707945
SF		 3179 if (ctrl->bridge)
3180 return rocker_port_ctrl_vlan_bridge(rocker_port, flags,
3181 ctrl, vlan_id);
9f6bbf7c
SF		 3182
3183 if (ctrl->term)
3184 return rocker_port_ctrl_vlan_term(rocker_port, flags,
3185 ctrl, vlan_id);
3186
3187 return -EOPNOTSUPP;
3188}
3189
3190static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
3191 int flags, __be16 vlan_id)
3192{
3193 int err = 0;
3194 int i;
3195
3196 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3197 if (rocker_port->ctrls[i]) {
3198 err = rocker_port_ctrl_vlan(rocker_port, flags,
3199 &rocker_ctrls[i], vlan_id);
3200 if (err)
3201 return err;
3202 }
3203 }
3204
3205 return err;
3206}
3207
3208static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags,
3209 struct rocker_ctrl *ctrl)
3210{
3211 u16 vid;
3212 int err = 0;
3213
3214 for (vid = 1; vid < VLAN_N_VID; vid++) {
3215 if (!test_bit(vid, rocker_port->vlan_bitmap))
3216 continue;
3217 err = rocker_port_ctrl_vlan(rocker_port, flags,
3218 ctrl, htons(vid));
3219 if (err)
3220 break;
3221 }
3222
3223 return err;
3224}
3225
6c707945
SF		 3226static int rocker_port_vlan(struct rocker_port *rocker_port, int flags,
3227 u16 vid)
3228{
3229 enum rocker_of_dpa_table_id goto_tbl =
3230 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
4a6bb6d3 3231 u32 in_pport = rocker_port->pport;
6c707945
SF		 3232 __be16 vlan_id = htons(vid);
3233 __be16 vlan_id_mask = htons(0xffff);
3234 __be16 internal_vlan_id;
3235 bool untagged;
3236 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
3237 int err;
3238
3239 internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
3240
3241 if (adding && test_and_set_bit(ntohs(internal_vlan_id),
3242 rocker_port->vlan_bitmap))
3243 return 0; /* already added */
3244 else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id),
3245 rocker_port->vlan_bitmap))
3246 return 0; /* already removed */
3247
3248 if (adding) {
3249 err = rocker_port_ctrl_vlan_add(rocker_port, flags,
3250 internal_vlan_id);
3251 if (err) {
3252 netdev_err(rocker_port->dev,
3253 "Error (%d) port ctrl vlan add\n", err);
3254 return err;
3255 }
3256 }
3257
3258 err = rocker_port_vlan_l2_groups(rocker_port, flags,
3259 internal_vlan_id, untagged);
3260 if (err) {
3261 netdev_err(rocker_port->dev,
3262 "Error (%d) port VLAN l2 groups\n", err);
3263 return err;
3264 }
3265
3266 err = rocker_port_vlan_flood_group(rocker_port, flags,
3267 internal_vlan_id);
3268 if (err) {
3269 netdev_err(rocker_port->dev,
3270 "Error (%d) port VLAN l2 flood group\n", err);
3271 return err;
3272 }
3273
3274 err = rocker_flow_tbl_vlan(rocker_port, flags,
4a6bb6d3 3275 in_pport, vlan_id, vlan_id_mask,
6c707945
SF		 3276 goto_tbl, untagged, internal_vlan_id);
3277 if (err)
3278 netdev_err(rocker_port->dev,
3279 "Error (%d) port VLAN table\n", err);
3280
3281 return err;
3282}
3283
9f6bbf7c
SF		 3284static int rocker_port_ig_tbl(struct rocker_port *rocker_port, int flags)
3285{
3286 enum rocker_of_dpa_table_id goto_tbl;
4a6bb6d3
SF		 3287 u32 in_pport;
3288 u32 in_pport_mask;
9f6bbf7c
SF		 3289 int err;
3290
3291 /* Normal Ethernet Frames. Matches pkts from any local physical
3292 * ports. Goto VLAN tbl.
3293 */
3294
4a6bb6d3
SF		 3295 in_pport = 0;
3296 in_pport_mask = 0xffff0000;
9f6bbf7c
SF		 3297 goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3298
3299 err = rocker_flow_tbl_ig_port(rocker_port, flags,
4a6bb6d3 3300 in_pport, in_pport_mask,
9f6bbf7c
SF		 3301 goto_tbl);
3302 if (err)
3303 netdev_err(rocker_port->dev,
3304 "Error (%d) ingress port table entry\n", err);
3305
3306 return err;
3307}
3308
6c707945
SF		 3309struct rocker_fdb_learn_work {
3310 struct work_struct work;
3311 struct net_device *dev;
3312 int flags;
3313 u8 addr[ETH_ALEN];
3314 u16 vid;
3315};
3316
3317static void rocker_port_fdb_learn_work(struct work_struct *work)
3318{
3319 struct rocker_fdb_learn_work *lw =
3320 container_of(work, struct rocker_fdb_learn_work, work);
3321 bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3322 bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3aeb6617
JP		 3323 struct netdev_switch_notifier_fdb_info info;
3324
3325 info.addr = lw->addr;
3326 info.vid = lw->vid;
6c707945 3327
51ace887 3328 if (learned && removing)
3aeb6617
JP		 3329 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL,
3330 lw->dev, &info.info);
51ace887 3331 else if (learned && !removing)
3aeb6617
JP		 3332 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_ADD,
3333 lw->dev, &info.info);
6c707945
SF		 3334
3335 kfree(work);
3336}
3337
3338static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3339 int flags, const u8 *addr, __be16 vlan_id)
3340{
3341 struct rocker_fdb_learn_work *lw;
3342 enum rocker_of_dpa_table_id goto_tbl =
3343 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
4a6bb6d3 3344 u32 out_pport = rocker_port->pport;
6c707945
SF		 3345 u32 tunnel_id = 0;
3346 u32 group_id = ROCKER_GROUP_NONE;
5111f80c 3347 bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
6c707945
SF		 3348 bool copy_to_cpu = false;
3349 int err;
3350
3351 if (rocker_port_is_bridged(rocker_port))
4a6bb6d3 3352 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
6c707945
SF		 3353
3354 if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3355 err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL,
3356 vlan_id, tunnel_id, goto_tbl,
3357 group_id, copy_to_cpu);
3358 if (err)
3359 return err;
3360 }
3361
5111f80c
SF		 3362 if (!syncing)
3363 return 0;
3364
6c707945
SF		 3365 if (!rocker_port_is_bridged(rocker_port))
3366 return 0;
3367
3368 lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags));
3369 if (!lw)
3370 return -ENOMEM;
3371
3372 INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3373
3374 lw->dev = rocker_port->dev;
3375 lw->flags = flags;
3376 ether_addr_copy(lw->addr, addr);
3377 lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3378
3379 schedule_work(&lw->work);
3380
3381 return 0;
3382}
3383
3384static struct rocker_fdb_tbl_entry *
3385rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3386{
3387 struct rocker_fdb_tbl_entry *found;
3388
3389 hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3390 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3391 return found;
3392
3393 return NULL;
3394}
3395
3396static int rocker_port_fdb(struct rocker_port *rocker_port,
3397 const unsigned char *addr,
3398 __be16 vlan_id, int flags)
3399{
3400 struct rocker *rocker = rocker_port->rocker;
3401 struct rocker_fdb_tbl_entry *fdb;
3402 struct rocker_fdb_tbl_entry *found;
3403 bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3404 unsigned long lock_flags;
3405
3406 fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags));
3407 if (!fdb)
3408 return -ENOMEM;
3409
3410 fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
4a6bb6d3 3411 fdb->key.pport = rocker_port->pport;
6c707945
SF		 3412 ether_addr_copy(fdb->key.addr, addr);
3413 fdb->key.vlan_id = vlan_id;
3414 fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3415
3416 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3417
3418 found = rocker_fdb_tbl_find(rocker, fdb);
3419
3420 if (removing && found) {
3421 kfree(fdb);
3422 hash_del(&found->entry);
3423 } else if (!removing && !found) {
3424 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3425 }
3426
3427 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3428
3429 /* Check if adding and already exists, or removing and can't find */
3430 if (!found != !removing) {
3431 kfree(fdb);
3432 if (!found && removing)
3433 return 0;
3434 /* Refreshing existing to update aging timers */
3435 flags |= ROCKER_OP_FLAG_REFRESH;
3436 }
3437
3438 return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id);
3439}
3440
3441static int rocker_port_fdb_flush(struct rocker_port *rocker_port)
3442{
3443 struct rocker *rocker = rocker_port->rocker;
3444 struct rocker_fdb_tbl_entry *found;
3445 unsigned long lock_flags;
3446 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3447 struct hlist_node *tmp;
3448 int bkt;
3449 int err = 0;
3450
3451 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3452 rocker_port->stp_state == BR_STATE_FORWARDING)
3453 return 0;
3454
3455 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3456
3457 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4a6bb6d3 3458 if (found->key.pport != rocker_port->pport)
6c707945
SF		 3459 continue;
3460 if (!found->learned)
3461 continue;
3462 err = rocker_port_fdb_learn(rocker_port, flags,
3463 found->key.addr,
3464 found->key.vlan_id);
3465 if (err)
3466 goto err_out;
3467 hash_del(&found->entry);
3468 }
3469
3470err_out:
3471 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3472
3473 return err;
3474}
3475
9f6bbf7c
SF		 3476static int rocker_port_router_mac(struct rocker_port *rocker_port,
3477 int flags, __be16 vlan_id)
3478{
4a6bb6d3 3479 u32 in_pport_mask = 0xffffffff;
9f6bbf7c
SF		 3480 __be16 eth_type;
3481 const u8 *dst_mac_mask = ff_mac;
3482 __be16 vlan_id_mask = htons(0xffff);
3483 bool copy_to_cpu = false;
3484 int err;
3485
3486 if (ntohs(vlan_id) == 0)
3487 vlan_id = rocker_port->internal_vlan_id;
3488
3489 eth_type = htons(ETH_P_IP);
3490 err = rocker_flow_tbl_term_mac(rocker_port,
4a6bb6d3 3491 rocker_port->pport, in_pport_mask,
9f6bbf7c
SF		 3492 eth_type, rocker_port->dev->dev_addr,
3493 dst_mac_mask, vlan_id, vlan_id_mask,
3494 copy_to_cpu, flags);
3495 if (err)
3496 return err;
3497
3498 eth_type = htons(ETH_P_IPV6);
3499 err = rocker_flow_tbl_term_mac(rocker_port,
4a6bb6d3 3500 rocker_port->pport, in_pport_mask,
9f6bbf7c
SF		 3501 eth_type, rocker_port->dev->dev_addr,
3502 dst_mac_mask, vlan_id, vlan_id_mask,
3503 copy_to_cpu, flags);
3504
3505 return err;
3506}
3507
6c707945
SF		 3508static int rocker_port_fwding(struct rocker_port *rocker_port)
3509{
3510 bool pop_vlan;
4a6bb6d3 3511 u32 out_pport;
6c707945
SF		 3512 __be16 vlan_id;
3513 u16 vid;
3514 int flags = ROCKER_OP_FLAG_NOWAIT;
3515 int err;
3516
3517 /* Port will be forwarding-enabled if its STP state is LEARNING
3518 * or FORWARDING. Traffic from CPU can still egress, regardless of
3519 * port STP state. Use L2 interface group on port VLANs as a way
3520 * to toggle port forwarding: if forwarding is disabled, L2
3521 * interface group will not exist.
3522 */
3523
3524 if (rocker_port->stp_state != BR_STATE_LEARNING &&
3525 rocker_port->stp_state != BR_STATE_FORWARDING)
3526 flags |= ROCKER_OP_FLAG_REMOVE;
3527
4a6bb6d3 3528 out_pport = rocker_port->pport;
6c707945
SF		 3529 for (vid = 1; vid < VLAN_N_VID; vid++) {
3530 if (!test_bit(vid, rocker_port->vlan_bitmap))
3531 continue;
3532 vlan_id = htons(vid);
3533 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3534 err = rocker_group_l2_interface(rocker_port, flags,
4a6bb6d3 3535 vlan_id, out_pport,
6c707945
SF		 3536 pop_vlan);
3537 if (err) {
3538 netdev_err(rocker_port->dev,
4a6bb6d3
SF		 3539 "Error (%d) port VLAN l2 group for pport %d\n",
3540 err, out_pport);
6c707945
SF		 3541 return err;
3542 }
3543 }
3544
3545 return 0;
3546}
3547
3548static int rocker_port_stp_update(struct rocker_port *rocker_port, u8 state)
3549{
3550 bool want[ROCKER_CTRL_MAX] = { 0, };
3551 int flags;
3552 int err;
3553 int i;
3554
3555 if (rocker_port->stp_state == state)
3556 return 0;
3557
3558 rocker_port->stp_state = state;
3559
3560 switch (state) {
3561 case BR_STATE_DISABLED:
3562 /* port is completely disabled */
3563 break;
3564 case BR_STATE_LISTENING:
3565 case BR_STATE_BLOCKING:
3566 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3567 break;
3568 case BR_STATE_LEARNING:
3569 case BR_STATE_FORWARDING:
3570 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3571 want[ROCKER_CTRL_IPV4_MCAST] = true;
3572 want[ROCKER_CTRL_IPV6_MCAST] = true;
3573 if (rocker_port_is_bridged(rocker_port))
3574 want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3575 else
3576 want[ROCKER_CTRL_LOCAL_ARP] = true;
3577 break;
3578 }
3579
3580 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3581 if (want[i] != rocker_port->ctrls[i]) {
3582 flags = ROCKER_OP_FLAG_NOWAIT |
3583 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3584 err = rocker_port_ctrl(rocker_port, flags,
3585 &rocker_ctrls[i]);
3586 if (err)
3587 return err;
3588 rocker_port->ctrls[i] = want[i];
3589 }
3590 }
3591
3592 err = rocker_port_fdb_flush(rocker_port);
3593 if (err)
3594 return err;
3595
3596 return rocker_port_fwding(rocker_port);
3597}
3598
e47172ab
SF		 3599static int rocker_port_fwd_enable(struct rocker_port *rocker_port)
3600{
3601 if (rocker_port_is_bridged(rocker_port))
3602 /* bridge STP will enable port */
3603 return 0;
3604
3605 /* port is not bridged, so simulate going to FORWARDING state */
3606 return rocker_port_stp_update(rocker_port, BR_STATE_FORWARDING);
3607}
3608
3609static int rocker_port_fwd_disable(struct rocker_port *rocker_port)
3610{
3611 if (rocker_port_is_bridged(rocker_port))
3612 /* bridge STP will disable port */
3613 return 0;
3614
3615 /* port is not bridged, so simulate going to DISABLED state */
3616 return rocker_port_stp_update(rocker_port, BR_STATE_DISABLED);
3617}
3618
9f6bbf7c
SF		 3619static struct rocker_internal_vlan_tbl_entry *
3620rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3621{
3622 struct rocker_internal_vlan_tbl_entry *found;
3623
3624 hash_for_each_possible(rocker->internal_vlan_tbl, found,
3625 entry, ifindex) {
3626 if (found->ifindex == ifindex)
3627 return found;
3628 }
3629
3630 return NULL;
3631}
3632
3633static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3634 int ifindex)
3635{
3636 struct rocker *rocker = rocker_port->rocker;
3637 struct rocker_internal_vlan_tbl_entry *entry;
3638 struct rocker_internal_vlan_tbl_entry *found;
3639 unsigned long lock_flags;
3640 int i;
3641
3642 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3643 if (!entry)
3644 return 0;
3645
3646 entry->ifindex = ifindex;
3647
3648 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3649
3650 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3651 if (found) {
3652 kfree(entry);
3653 goto found;
3654 }
3655
3656 found = entry;
3657 hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3658
3659 for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3660 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3661 continue;
3662 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3663 goto found;
3664 }
3665
3666 netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3667
3668found:
3669 found->ref_count++;
3670 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3671
3672 return found->vlan_id;
3673}
3674
3675static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3676 int ifindex)
3677{
3678 struct rocker *rocker = rocker_port->rocker;
3679 struct rocker_internal_vlan_tbl_entry *found;
3680 unsigned long lock_flags;
3681 unsigned long bit;
3682
3683 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3684
3685 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3686 if (!found) {
3687 netdev_err(rocker_port->dev,
3688 "ifindex (%d) not found in internal VLAN tbl\n",
3689 ifindex);
3690 goto not_found;
3691 }
3692
3693 if (--found->ref_count <= 0) {
3694 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3695 clear_bit(bit, rocker->internal_vlan_bitmap);
3696 hash_del(&found->entry);
3697 kfree(found);
3698 }
3699
3700not_found:
3701 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3702}
3703
c1beeef7
SF		 3704static int rocker_port_fib_ipv4(struct rocker_port *rocker_port, __be32 dst,
3705 int dst_len, struct fib_info *fi, u32 tb_id,
3706 int flags)
3707{
3708 struct fib_nh *nh;
3709 __be16 eth_type = htons(ETH_P_IP);
3710 __be32 dst_mask = inet_make_mask(dst_len);
3711 __be16 internal_vlan_id = rocker_port->internal_vlan_id;
3712 u32 priority = fi->fib_priority;
3713 enum rocker_of_dpa_table_id goto_tbl =
3714 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3715 u32 group_id;
3716 bool nh_on_port;
3717 bool has_gw;
3718 u32 index;
3719 int err;
3720
3721 /* XXX support ECMP */
3722
3723 nh = fi->fib_nh;
3724 nh_on_port = (fi->fib_dev == rocker_port->dev);
3725 has_gw = !!nh->nh_gw;
3726
3727 if (has_gw && nh_on_port) {
3728 err = rocker_port_ipv4_nh(rocker_port, flags,
3729 nh->nh_gw, &index);
3730 if (err)
3731 return err;
3732
3733 group_id = ROCKER_GROUP_L3_UNICAST(index);
3734 } else {
3735 /* Send to CPU for processing */
3736 group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
3737 }
3738
3739 err = rocker_flow_tbl_ucast4_routing(rocker_port, eth_type, dst,
3740 dst_mask, priority, goto_tbl,
3741 group_id, flags);
3742 if (err)
3743 netdev_err(rocker_port->dev, "Error (%d) IPv4 route %pI4\n",
3744 err, &dst);
3745
3746 return err;
3747}
3748
4b8ac966
JP		 3749/*****************
3750 * Net device ops
3751 *****************/
3752
3753static int rocker_port_open(struct net_device *dev)
3754{
3755 struct rocker_port *rocker_port = netdev_priv(dev);
3756 int err;
3757
3758 err = rocker_port_dma_rings_init(rocker_port);
3759 if (err)
3760 return err;
3761
3762 err = request_irq(rocker_msix_tx_vector(rocker_port),
3763 rocker_tx_irq_handler, 0,
3764 rocker_driver_name, rocker_port);
3765 if (err) {
3766 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3767 goto err_request_tx_irq;
3768 }
3769
3770 err = request_irq(rocker_msix_rx_vector(rocker_port),
3771 rocker_rx_irq_handler, 0,
3772 rocker_driver_name, rocker_port);
3773 if (err) {
3774 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3775 goto err_request_rx_irq;
3776 }
3777
e47172ab 3778 err = rocker_port_fwd_enable(rocker_port);
6c707945 3779 if (err)
e47172ab 3780 goto err_fwd_enable;
6c707945 3781
4b8ac966
JP		 3782 napi_enable(&rocker_port->napi_tx);
3783 napi_enable(&rocker_port->napi_rx);
3784 rocker_port_set_enable(rocker_port, true);
3785 netif_start_queue(dev);
3786 return 0;
3787
e47172ab 3788err_fwd_enable:
6c707945 3789 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4b8ac966
JP		 3790err_request_rx_irq:
3791 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3792err_request_tx_irq:
3793 rocker_port_dma_rings_fini(rocker_port);
3794 return err;
3795}
3796
3797static int rocker_port_stop(struct net_device *dev)
3798{
3799 struct rocker_port *rocker_port = netdev_priv(dev);
3800
3801 netif_stop_queue(dev);
3802 rocker_port_set_enable(rocker_port, false);
3803 napi_disable(&rocker_port->napi_rx);
3804 napi_disable(&rocker_port->napi_tx);
e47172ab 3805 rocker_port_fwd_disable(rocker_port);
4b8ac966
JP		 3806 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3807 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3808 rocker_port_dma_rings_fini(rocker_port);
3809
3810 return 0;
3811}
3812
3813static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
3814 struct rocker_desc_info *desc_info)
3815{
3816 struct rocker *rocker = rocker_port->rocker;
3817 struct pci_dev *pdev = rocker->pdev;
3818 struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
3819 struct rocker_tlv *attr;
3820 int rem;
3821
3822 rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
3823 if (!attrs[ROCKER_TLV_TX_FRAGS])
3824 return;
3825 rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
3826 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
3827 dma_addr_t dma_handle;
3828 size_t len;
3829
3830 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
3831 continue;
3832 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
3833 attr);
3834 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
3835 !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
3836 continue;
3837 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
3838 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
3839 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
3840 }
3841}
3842
3843static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
3844 struct rocker_desc_info *desc_info,
3845 char *buf, size_t buf_len)
3846{
3847 struct rocker *rocker = rocker_port->rocker;
3848 struct pci_dev *pdev = rocker->pdev;
3849 dma_addr_t dma_handle;
3850 struct rocker_tlv *frag;
3851
3852 dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
3853 if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
3854 if (net_ratelimit())
3855 netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
3856 return -EIO;
3857 }
3858 frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
3859 if (!frag)
3860 goto unmap_frag;
3861 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
3862 dma_handle))
3863 goto nest_cancel;
3864 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
3865 buf_len))
3866 goto nest_cancel;
3867 rocker_tlv_nest_end(desc_info, frag);
3868 return 0;
3869
3870nest_cancel:
3871 rocker_tlv_nest_cancel(desc_info, frag);
3872unmap_frag:
3873 pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
3874 return -EMSGSIZE;
3875}
3876
3877static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
3878{
3879 struct rocker_port *rocker_port = netdev_priv(dev);
3880 struct rocker *rocker = rocker_port->rocker;
3881 struct rocker_desc_info *desc_info;
3882 struct rocker_tlv *frags;
3883 int i;
3884 int err;
3885
3886 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3887 if (unlikely(!desc_info)) {
3888 if (net_ratelimit())
3889 netdev_err(dev, "tx ring full when queue awake\n");
3890 return NETDEV_TX_BUSY;
3891 }
3892
3893 rocker_desc_cookie_ptr_set(desc_info, skb);
3894
3895 frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
3896 if (!frags)
3897 goto out;
3898 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3899 skb->data, skb_headlen(skb));
3900 if (err)
3901 goto nest_cancel;
3902 if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
3903 goto nest_cancel;
3904
3905 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3906 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3907
3908 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3909 skb_frag_address(frag),
3910 skb_frag_size(frag));
3911 if (err)
3912 goto unmap_frags;
3913 }
3914 rocker_tlv_nest_end(desc_info, frags);
3915
3916 rocker_desc_gen_clear(desc_info);
3917 rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
3918
3919 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3920 if (!desc_info)
3921 netif_stop_queue(dev);
3922
3923 return NETDEV_TX_OK;
3924
3925unmap_frags:
3926 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3927nest_cancel:
3928 rocker_tlv_nest_cancel(desc_info, frags);
3929out:
3930 dev_kfree_skb(skb);
f2bbca51
DA		 3931 dev->stats.tx_dropped++;
3932
4b8ac966
JP		 3933 return NETDEV_TX_OK;
3934}
3935
3936static int rocker_port_set_mac_address(struct net_device *dev, void *p)
3937{
3938 struct sockaddr *addr = p;
3939 struct rocker_port *rocker_port = netdev_priv(dev);
3940 int err;
3941
3942 if (!is_valid_ether_addr(addr->sa_data))
3943 return -EADDRNOTAVAIL;
3944
3945 err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
3946 if (err)
3947 return err;
3948 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3949 return 0;
3950}
3951
6c707945
SF		 3952static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
3953 __be16 proto, u16 vid)
3954{
3955 struct rocker_port *rocker_port = netdev_priv(dev);
3956 int err;
3957
3958 err = rocker_port_vlan(rocker_port, 0, vid);
3959 if (err)
3960 return err;
3961
3962 return rocker_port_router_mac(rocker_port, 0, htons(vid));
3963}
3964
3965static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
3966 __be16 proto, u16 vid)
3967{
3968 struct rocker_port *rocker_port = netdev_priv(dev);
3969 int err;
3970
3971 err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE,
3972 htons(vid));
3973 if (err)
3974 return err;
3975
3976 return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid);
3977}
3978
3979static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
3980 struct net_device *dev,
3981 const unsigned char *addr, u16 vid,
3982 u16 nlm_flags)
3983{
3984 struct rocker_port *rocker_port = netdev_priv(dev);
3985 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3986 int flags = 0;
3987
3988 if (!rocker_port_is_bridged(rocker_port))
3989 return -EINVAL;
3990
3991 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3992}
3993
3994static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
3995 struct net_device *dev,
3996 const unsigned char *addr, u16 vid)
3997{
3998 struct rocker_port *rocker_port = netdev_priv(dev);
3999 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
4000 int flags = ROCKER_OP_FLAG_REMOVE;
4001
4002 if (!rocker_port_is_bridged(rocker_port))
4003 return -EINVAL;
4004
4005 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
4006}
4007
ce76ca68
JP		 4008static int rocker_fdb_fill_info(struct sk_buff *skb,
4009 struct rocker_port *rocker_port,
4010 const unsigned char *addr, u16 vid,
4011 u32 portid, u32 seq, int type,
4012 unsigned int flags)
4013{
4014 struct nlmsghdr *nlh;
4015 struct ndmsg *ndm;
4016
4017 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
4018 if (!nlh)
4019 return -EMSGSIZE;
4020
4021 ndm = nlmsg_data(nlh);
4022 ndm->ndm_family = AF_BRIDGE;
4023 ndm->ndm_pad1 = 0;
4024 ndm->ndm_pad2 = 0;
4025 ndm->ndm_flags = NTF_SELF;
4026 ndm->ndm_type = 0;
4027 ndm->ndm_ifindex = rocker_port->dev->ifindex;
4028 ndm->ndm_state = NUD_REACHABLE;
4029
4030 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
4031 goto nla_put_failure;
4032
4033 if (vid && nla_put_u16(skb, NDA_VLAN, vid))
4034 goto nla_put_failure;
4035
053c095a
JB		 4036 nlmsg_end(skb, nlh);
4037 return 0;
ce76ca68
JP		 4038
4039nla_put_failure:
4040 nlmsg_cancel(skb, nlh);
4041 return -EMSGSIZE;
4042}
4043
4044static int rocker_port_fdb_dump(struct sk_buff *skb,
4045 struct netlink_callback *cb,
4046 struct net_device *dev,
4047 struct net_device *filter_dev,
4048 int idx)
4049{
4050 struct rocker_port *rocker_port = netdev_priv(dev);
4051 struct rocker *rocker = rocker_port->rocker;
4052 struct rocker_fdb_tbl_entry *found;
4053 struct hlist_node *tmp;
4054 int bkt;
4055 unsigned long lock_flags;
4056 const unsigned char *addr;
4057 u16 vid;
4058 int err;
4059
4060 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
4061 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
4a6bb6d3 4062 if (found->key.pport != rocker_port->pport)
ce76ca68
JP		 4063 continue;
4064 if (idx < cb->args[0])
4065 goto skip;
4066 addr = found->key.addr;
4067 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
4068 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
4069 NETLINK_CB(cb->skb).portid,
4070 cb->nlh->nlmsg_seq,
4071 RTM_NEWNEIGH, NLM_F_MULTI);
4072 if (err < 0)
4073 break;
4074skip:
4075 ++idx;
4076 }
4077 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
4078 return idx;
4079}
4080
5111f80c 4081static int rocker_port_bridge_setlink(struct net_device *dev,
add511b3 4082 struct nlmsghdr *nlh, u16 flags)
5111f80c
SF		 4083{
4084 struct rocker_port *rocker_port = netdev_priv(dev);
4085 struct nlattr *protinfo;
5111f80c 4086 struct nlattr *attr;
5111f80c
SF		 4087 int err;
4088
4089 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
4090 IFLA_PROTINFO);
5111f80c
SF		 4091 if (protinfo) {
4092 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING);
4093 if (attr) {
e7560582
TG		 4094 if (nla_len(attr) < sizeof(u8))
4095 return -EINVAL;
4096
5111f80c
SF		 4097 if (nla_get_u8(attr))
4098 rocker_port->brport_flags |= BR_LEARNING;
4099 else
4100 rocker_port->brport_flags &= ~BR_LEARNING;
4101 err = rocker_port_set_learning(rocker_port);
4102 if (err)
4103 return err;
4104 }
4105 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC);
4106 if (attr) {
e7560582
TG		 4107 if (nla_len(attr) < sizeof(u8))
4108 return -EINVAL;
4109
5111f80c
SF		 4110 if (nla_get_u8(attr))
4111 rocker_port->brport_flags |= BR_LEARNING_SYNC;
4112 else
4113 rocker_port->brport_flags &= ~BR_LEARNING_SYNC;
4114 }
4115 }
4116
4117 return 0;
4118}
4119
4120static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4121 struct net_device *dev,
4122 u32 filter_mask)
4123{
4124 struct rocker_port *rocker_port = netdev_priv(dev);
1d460b98 4125 u16 mode = BRIDGE_MODE_UNDEF;
5111f80c
SF		 4126 u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
4127
4128 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
4129 rocker_port->brport_flags, mask);
4130}
4131
4b8ac966
JP		 4132static int rocker_port_switch_parent_id_get(struct net_device *dev,
4133 struct netdev_phys_item_id *psid)
4134{
4135 struct rocker_port *rocker_port = netdev_priv(dev);
4136 struct rocker *rocker = rocker_port->rocker;
4137
4138 psid->id_len = sizeof(rocker->hw.id);
4139 memcpy(&psid->id, &rocker->hw.id, psid->id_len);
4140 return 0;
4141}
4142
6c707945
SF		 4143static int rocker_port_switch_port_stp_update(struct net_device *dev, u8 state)
4144{
4145 struct rocker_port *rocker_port = netdev_priv(dev);
4146
4147 return rocker_port_stp_update(rocker_port, state);
4148}
4149
c1beeef7
SF		 4150static int rocker_port_switch_fib_ipv4_add(struct net_device *dev,
4151 __be32 dst, int dst_len,
4152 struct fib_info *fi,
4153 u8 tos, u8 type, u32 tb_id)
4154{
4155 struct rocker_port *rocker_port = netdev_priv(dev);
4156 int flags = 0;
4157
4158 return rocker_port_fib_ipv4(rocker_port, dst, dst_len,
4159 fi, tb_id, flags);
4160}
4161
4162static int rocker_port_switch_fib_ipv4_del(struct net_device *dev,
4163 __be32 dst, int dst_len,
4164 struct fib_info *fi,
4165 u8 tos, u8 type, u32 tb_id)
4166{
4167 struct rocker_port *rocker_port = netdev_priv(dev);
4168 int flags = ROCKER_OP_FLAG_REMOVE;
4169
4170 return rocker_port_fib_ipv4(rocker_port, dst, dst_len,
4171 fi, tb_id, flags);
4172}
4173
4b8ac966
JP		 4174static const struct net_device_ops rocker_port_netdev_ops = {
4175 .ndo_open = rocker_port_open,
4176 .ndo_stop = rocker_port_stop,
4177 .ndo_start_xmit = rocker_port_xmit,
4178 .ndo_set_mac_address = rocker_port_set_mac_address,
6c707945
SF		 4179 .ndo_vlan_rx_add_vid = rocker_port_vlan_rx_add_vid,
4180 .ndo_vlan_rx_kill_vid = rocker_port_vlan_rx_kill_vid,
4181 .ndo_fdb_add = rocker_port_fdb_add,
4182 .ndo_fdb_del = rocker_port_fdb_del,
ce76ca68 4183 .ndo_fdb_dump = rocker_port_fdb_dump,
5111f80c
SF		 4184 .ndo_bridge_setlink = rocker_port_bridge_setlink,
4185 .ndo_bridge_getlink = rocker_port_bridge_getlink,
4b8ac966 4186 .ndo_switch_parent_id_get = rocker_port_switch_parent_id_get,
6c707945 4187 .ndo_switch_port_stp_update = rocker_port_switch_port_stp_update,
c1beeef7
SF		 4188 .ndo_switch_fib_ipv4_add = rocker_port_switch_fib_ipv4_add,
4189 .ndo_switch_fib_ipv4_del = rocker_port_switch_fib_ipv4_del,
4b8ac966
JP		 4190};
4191
4192/********************
4193 * ethtool interface
4194 ********************/
4195
4196static int rocker_port_get_settings(struct net_device *dev,
4197 struct ethtool_cmd *ecmd)
4198{
4199 struct rocker_port *rocker_port = netdev_priv(dev);
4200
4201 return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
4202}
4203
4204static int rocker_port_set_settings(struct net_device *dev,
4205 struct ethtool_cmd *ecmd)
4206{
4207 struct rocker_port *rocker_port = netdev_priv(dev);
4208
4209 return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
4210}
4211
4212static void rocker_port_get_drvinfo(struct net_device *dev,
4213 struct ethtool_drvinfo *drvinfo)
4214{
4215 strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
4216 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
4217}
4218
9766e97a
DA		 4219static struct rocker_port_stats {
4220 char str[ETH_GSTRING_LEN];
4221 int type;
4222} rocker_port_stats[] = {
4223 { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, },
4224 { "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, },
4225 { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
4226 { "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, },
4227
4228 { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, },
4229 { "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, },
4230 { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
4231 { "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, },
4232};
4233
4234#define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats)
4235
4236static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
4237 u8 *data)
4238{
4239 u8 *p = data;
4240 int i;
4241
4242 switch (stringset) {
4243 case ETH_SS_STATS:
4244 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4245 memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
4246 p += ETH_GSTRING_LEN;
4247 }
4248 break;
4249 }
4250}
4251
4252static int
4253rocker_cmd_get_port_stats_prep(struct rocker *rocker,
4254 struct rocker_port *rocker_port,
4255 struct rocker_desc_info *desc_info,
4256 void *priv)
4257{
4258 struct rocker_tlv *cmd_stats;
4259
4260 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
4261 ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
4262 return -EMSGSIZE;
4263
4264 cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
4265 if (!cmd_stats)
4266 return -EMSGSIZE;
4267
4a6bb6d3
SF		 4268 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_PPORT,
4269 rocker_port->pport))
9766e97a
DA		 4270 return -EMSGSIZE;
4271
4272 rocker_tlv_nest_end(desc_info, cmd_stats);
4273
4274 return 0;
4275}
4276
4277static int
4278rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker,
4279 struct rocker_port *rocker_port,
4280 struct rocker_desc_info *desc_info,
4281 void *priv)
4282{
4283 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
4284 struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
4285 struct rocker_tlv *pattr;
4a6bb6d3 4286 u32 pport;
9766e97a
DA		 4287 u64 *data = priv;
4288 int i;
4289
4290 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
4291
4292 if (!attrs[ROCKER_TLV_CMD_INFO])
4293 return -EIO;
4294
4295 rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
4296 attrs[ROCKER_TLV_CMD_INFO]);
4297
4a6bb6d3 4298 if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT])
9766e97a
DA		 4299 return -EIO;
4300
4a6bb6d3
SF		 4301 pport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_PPORT]);
4302 if (pport != rocker_port->pport)
9766e97a
DA		 4303 return -EIO;
4304
4305 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
4306 pattr = stats_attrs[rocker_port_stats[i].type];
4307 if (!pattr)
4308 continue;
4309
4310 data[i] = rocker_tlv_get_u64(pattr);
4311 }
4312
4313 return 0;
4314}
4315
4316static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
4317 void *priv)
4318{
4319 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
4320 rocker_cmd_get_port_stats_prep, NULL,
4321 rocker_cmd_get_port_stats_ethtool_proc,
4322 priv, false);
4323}
4324
4325static void rocker_port_get_stats(struct net_device *dev,
4326 struct ethtool_stats *stats, u64 *data)
4327{
4328 struct rocker_port *rocker_port = netdev_priv(dev);
4329
4330 if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
4331 int i;
4332
4333 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
4334 data[i] = 0;
4335 }
4336
4337 return;
4338}
4339
4340static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
4341{
4342 switch (sset) {
4343 case ETH_SS_STATS:
4344 return ROCKER_PORT_STATS_LEN;
4345 default:
4346 return -EOPNOTSUPP;
4347 }
4348}
4349
4b8ac966
JP		 4350static const struct ethtool_ops rocker_port_ethtool_ops = {
4351 .get_settings = rocker_port_get_settings,
4352 .set_settings = rocker_port_set_settings,
4353 .get_drvinfo = rocker_port_get_drvinfo,
4354 .get_link = ethtool_op_get_link,
9766e97a
DA		 4355 .get_strings = rocker_port_get_strings,
4356 .get_ethtool_stats = rocker_port_get_stats,
4357 .get_sset_count = rocker_port_get_sset_count,
4b8ac966
JP		 4358};
4359
4360/*****************
4361 * NAPI interface
4362 *****************/
4363
4364static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
4365{
4366 return container_of(napi, struct rocker_port, napi_tx);
4367}
4368
4369static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
4370{
4371 struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
4372 struct rocker *rocker = rocker_port->rocker;
4373 struct rocker_desc_info *desc_info;
4374 u32 credits = 0;
4375 int err;
4376
4377 /* Cleanup tx descriptors */
4378 while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
f2bbca51
DA		 4379 struct sk_buff *skb;
4380
4b8ac966
JP		 4381 err = rocker_desc_err(desc_info);
4382 if (err && net_ratelimit())
4383 netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4384 err);
4385 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
f2bbca51
DA		 4386
4387 skb = rocker_desc_cookie_ptr_get(desc_info);
4388 if (err == 0) {
4389 rocker_port->dev->stats.tx_packets++;
4390 rocker_port->dev->stats.tx_bytes += skb->len;
4391 } else
4392 rocker_port->dev->stats.tx_errors++;
4393
4394 dev_kfree_skb_any(skb);
4b8ac966
JP		 4395 credits++;
4396 }
4397
4398 if (credits && netif_queue_stopped(rocker_port->dev))
4399 netif_wake_queue(rocker_port->dev);
4400
4401 napi_complete(napi);
4402 rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4403
4404 return 0;
4405}
4406
4407static int rocker_port_rx_proc(struct rocker *rocker,
4408 struct rocker_port *rocker_port,
4409 struct rocker_desc_info *desc_info)
4410{
4411 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4412 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4413 size_t rx_len;
4414
4415 if (!skb)
4416 return -ENOENT;
4417
4418 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4419 if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4420 return -EINVAL;
4421
4422 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4423
4424 rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4425 skb_put(skb, rx_len);
4426 skb->protocol = eth_type_trans(skb, rocker_port->dev);
f2bbca51
DA		 4427
4428 rocker_port->dev->stats.rx_packets++;
4429 rocker_port->dev->stats.rx_bytes += skb->len;
4430
4b8ac966
JP		 4431 netif_receive_skb(skb);
4432
4433 return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
4434}
4435
4436static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4437{
4438 return container_of(napi, struct rocker_port, napi_rx);
4439}
4440
4441static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4442{
4443 struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4444 struct rocker *rocker = rocker_port->rocker;
4445 struct rocker_desc_info *desc_info;
4446 u32 credits = 0;
4447 int err;
4448
4449 /* Process rx descriptors */
4450 while (credits < budget &&
4451 (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4452 err = rocker_desc_err(desc_info);
4453 if (err) {
4454 if (net_ratelimit())
4455 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4456 err);
4457 } else {
4458 err = rocker_port_rx_proc(rocker, rocker_port,
4459 desc_info);
4460 if (err && net_ratelimit())
4461 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4462 err);
4463 }
f2bbca51
DA		 4464 if (err)
4465 rocker_port->dev->stats.rx_errors++;
4466
4b8ac966
JP		 4467 rocker_desc_gen_clear(desc_info);
4468 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4469 credits++;
4470 }
4471
4472 if (credits < budget)
4473 napi_complete(napi);
4474
4475 rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4476
4477 return credits;
4478}
4479
4480/*****************
4481 * PCI driver ops
4482 *****************/
4483
4484static void rocker_carrier_init(struct rocker_port *rocker_port)
4485{
4486 struct rocker *rocker = rocker_port->rocker;
4487 u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4488 bool link_up;
4489
4a6bb6d3 4490 link_up = link_status & (1 << rocker_port->pport);
4b8ac966
JP		 4491 if (link_up)
4492 netif_carrier_on(rocker_port->dev);
4493 else
4494 netif_carrier_off(rocker_port->dev);
4495}
4496
4497static void rocker_remove_ports(struct rocker *rocker)
4498{
9f6bbf7c 4499 struct rocker_port *rocker_port;
4b8ac966
JP		 4500 int i;
4501
9f6bbf7c
SF		 4502 for (i = 0; i < rocker->port_count; i++) {
4503 rocker_port = rocker->ports[i];
4504 rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE);
4505 unregister_netdev(rocker_port->dev);
4506 }
4b8ac966
JP		 4507 kfree(rocker->ports);
4508}
4509
4510static void rocker_port_dev_addr_init(struct rocker *rocker,
4511 struct rocker_port *rocker_port)
4512{
4513 struct pci_dev *pdev = rocker->pdev;
4514 int err;
4515
4516 err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4517 rocker_port->dev->dev_addr);
4518 if (err) {
4519 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4520 eth_hw_addr_random(rocker_port->dev);
4521 }
4522}
4523
4524static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4525{
4526 struct pci_dev *pdev = rocker->pdev;
4527 struct rocker_port *rocker_port;
4528 struct net_device *dev;
4529 int err;
4530
4531 dev = alloc_etherdev(sizeof(struct rocker_port));
4532 if (!dev)
4533 return -ENOMEM;
4534 rocker_port = netdev_priv(dev);
4535 rocker_port->dev = dev;
4536 rocker_port->rocker = rocker;
4537 rocker_port->port_number = port_number;
4a6bb6d3 4538 rocker_port->pport = port_number + 1;
5111f80c 4539 rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4b8ac966
JP		 4540
4541 rocker_port_dev_addr_init(rocker, rocker_port);
4542 dev->netdev_ops = &rocker_port_netdev_ops;
4543 dev->ethtool_ops = &rocker_port_ethtool_ops;
4544 netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4545 NAPI_POLL_WEIGHT);
4546 netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4547 NAPI_POLL_WEIGHT);
4548 rocker_carrier_init(rocker_port);
4549
c1beeef7
SF		 4550 dev->features |= NETIF_F_NETNS_LOCAL |
4551 NETIF_F_HW_VLAN_CTAG_FILTER |
4552 NETIF_F_HW_SWITCH_OFFLOAD;
4b8ac966
JP		 4553
4554 err = register_netdev(dev);
4555 if (err) {
4556 dev_err(&pdev->dev, "register_netdev failed\n");
4557 goto err_register_netdev;
4558 }
4559 rocker->ports[port_number] = rocker_port;
4560
5111f80c
SF		 4561 rocker_port_set_learning(rocker_port);
4562
9f6bbf7c
SF		 4563 rocker_port->internal_vlan_id =
4564 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4565 err = rocker_port_ig_tbl(rocker_port, 0);
4566 if (err) {
4567 dev_err(&pdev->dev, "install ig port table failed\n");
4568 goto err_port_ig_tbl;
4569 }
4570
4b8ac966
JP		 4571 return 0;
4572
9f6bbf7c
SF		 4573err_port_ig_tbl:
4574 unregister_netdev(dev);
4b8ac966
JP		 4575err_register_netdev:
4576 free_netdev(dev);
4577 return err;
4578}
4579
4580static int rocker_probe_ports(struct rocker *rocker)
4581{
4582 int i;
4583 size_t alloc_size;
4584 int err;
4585
4586 alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4587 rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
e65ad3be
DC		 4588 if (!rocker->ports)
4589 return -ENOMEM;
4b8ac966
JP		 4590 for (i = 0; i < rocker->port_count; i++) {
4591 err = rocker_probe_port(rocker, i);
4592 if (err)
4593 goto remove_ports;
4594 }
4595 return 0;
4596
4597remove_ports:
4598 rocker_remove_ports(rocker);
4599 return err;
4600}
4601
4602static int rocker_msix_init(struct rocker *rocker)
4603{
4604 struct pci_dev *pdev = rocker->pdev;
4605 int msix_entries;
4606 int i;
4607 int err;
4608
4609 msix_entries = pci_msix_vec_count(pdev);
4610 if (msix_entries < 0)
4611 return msix_entries;
4612
4613 if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4614 return -EINVAL;
4615
4616 rocker->msix_entries = kmalloc_array(msix_entries,
4617 sizeof(struct msix_entry),
4618 GFP_KERNEL);
4619 if (!rocker->msix_entries)
4620 return -ENOMEM;
4621
4622 for (i = 0; i < msix_entries; i++)
4623 rocker->msix_entries[i].entry = i;
4624
4625 err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4626 if (err < 0)
4627 goto err_enable_msix;
4628
4629 return 0;
4630
4631err_enable_msix:
4632 kfree(rocker->msix_entries);
4633 return err;
4634}
4635
4636static void rocker_msix_fini(struct rocker *rocker)
4637{
4638 pci_disable_msix(rocker->pdev);
4639 kfree(rocker->msix_entries);
4640}
4641
4642static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4643{
4644 struct rocker *rocker;
4645 int err;
4646
4647 rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4648 if (!rocker)
4649 return -ENOMEM;
4650
4651 err = pci_enable_device(pdev);
4652 if (err) {
4653 dev_err(&pdev->dev, "pci_enable_device failed\n");
4654 goto err_pci_enable_device;
4655 }
4656
4657 err = pci_request_regions(pdev, rocker_driver_name);
4658 if (err) {
4659 dev_err(&pdev->dev, "pci_request_regions failed\n");
4660 goto err_pci_request_regions;
4661 }
4662
4663 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4664 if (!err) {
4665 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4666 if (err) {
4667 dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4668 goto err_pci_set_dma_mask;
4669 }
4670 } else {
4671 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4672 if (err) {
4673 dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
4674 goto err_pci_set_dma_mask;
4675 }
4676 }
4677
4678 if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
4679 dev_err(&pdev->dev, "invalid PCI region size\n");
4680 goto err_pci_resource_len_check;
4681 }
4682
4683 rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
4684 pci_resource_len(pdev, 0));
4685 if (!rocker->hw_addr) {
4686 dev_err(&pdev->dev, "ioremap failed\n");
4687 err = -EIO;
4688 goto err_ioremap;
4689 }
4690 pci_set_master(pdev);
4691
4692 rocker->pdev = pdev;
4693 pci_set_drvdata(pdev, rocker);
4694
4695 rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
4696
4697 err = rocker_msix_init(rocker);
4698 if (err) {
4699 dev_err(&pdev->dev, "MSI-X init failed\n");
4700 goto err_msix_init;
4701 }
4702
4703 err = rocker_basic_hw_test(rocker);
4704 if (err) {
4705 dev_err(&pdev->dev, "basic hw test failed\n");
4706 goto err_basic_hw_test;
4707 }
4708
4709 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4710
4711 err = rocker_dma_rings_init(rocker);
4712 if (err)
4713 goto err_dma_rings_init;
4714
4715 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
4716 rocker_cmd_irq_handler, 0,
4717 rocker_driver_name, rocker);
4718 if (err) {
4719 dev_err(&pdev->dev, "cannot assign cmd irq\n");
4720 goto err_request_cmd_irq;
4721 }
4722
4723 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
4724 rocker_event_irq_handler, 0,
4725 rocker_driver_name, rocker);
4726 if (err) {
4727 dev_err(&pdev->dev, "cannot assign event irq\n");
4728 goto err_request_event_irq;
4729 }
4730
4731 rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
4732
9f6bbf7c
SF		 4733 err = rocker_init_tbls(rocker);
4734 if (err) {
4735 dev_err(&pdev->dev, "cannot init rocker tables\n");
4736 goto err_init_tbls;
4737 }
4738
4b8ac966
JP		 4739 err = rocker_probe_ports(rocker);
4740 if (err) {
4741 dev_err(&pdev->dev, "failed to probe ports\n");
4742 goto err_probe_ports;
4743 }
4744
4745 dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
4746
4747 return 0;
4748
4749err_probe_ports:
9f6bbf7c
SF		 4750 rocker_free_tbls(rocker);
4751err_init_tbls:
4b8ac966
JP		 4752 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4753err_request_event_irq:
4754 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4755err_request_cmd_irq:
4756 rocker_dma_rings_fini(rocker);
4757err_dma_rings_init:
4758err_basic_hw_test:
4759 rocker_msix_fini(rocker);
4760err_msix_init:
4761 iounmap(rocker->hw_addr);
4762err_ioremap:
4763err_pci_resource_len_check:
4764err_pci_set_dma_mask:
4765 pci_release_regions(pdev);
4766err_pci_request_regions:
4767 pci_disable_device(pdev);
4768err_pci_enable_device:
4769 kfree(rocker);
4770 return err;
4771}
4772
4773static void rocker_remove(struct pci_dev *pdev)
4774{
4775 struct rocker *rocker = pci_get_drvdata(pdev);
4776
9f6bbf7c 4777 rocker_free_tbls(rocker);
4b8ac966
JP		 4778 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4779 rocker_remove_ports(rocker);
4780 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4781 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4782 rocker_dma_rings_fini(rocker);
4783 rocker_msix_fini(rocker);
4784 iounmap(rocker->hw_addr);
4785 pci_release_regions(rocker->pdev);
4786 pci_disable_device(rocker->pdev);
4787 kfree(rocker);
4788}
4789
4790static struct pci_driver rocker_pci_driver = {
4791 .name = rocker_driver_name,
4792 .id_table = rocker_pci_id_table,
4793 .probe = rocker_probe,
4794 .remove = rocker_remove,
4795};
4796
6c707945
SF		 4797/************************************
4798 * Net device notifier event handler
4799 ************************************/
4800
4801static bool rocker_port_dev_check(struct net_device *dev)
4802{
4803 return dev->netdev_ops == &rocker_port_netdev_ops;
4804}
4805
4806static int rocker_port_bridge_join(struct rocker_port *rocker_port,
4807 struct net_device *bridge)
4808{
4809 int err;
4810
4811 rocker_port_internal_vlan_id_put(rocker_port,
4812 rocker_port->dev->ifindex);
4813
4814 rocker_port->bridge_dev = bridge;
4815
4816 /* Use bridge internal VLAN ID for untagged pkts */
4817 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4818 if (err)
4819 return err;
4820 rocker_port->internal_vlan_id =
4821 rocker_port_internal_vlan_id_get(rocker_port,
4822 bridge->ifindex);
e47172ab 4823 return rocker_port_vlan(rocker_port, 0, 0);
6c707945
SF		 4824}
4825
4826static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
4827{
4828 int err;
4829
4830 rocker_port_internal_vlan_id_put(rocker_port,
4831 rocker_port->bridge_dev->ifindex);
4832
4833 rocker_port->bridge_dev = NULL;
4834
4835 /* Use port internal VLAN ID for untagged pkts */
4836 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4837 if (err)
4838 return err;
4839 rocker_port->internal_vlan_id =
4840 rocker_port_internal_vlan_id_get(rocker_port,
4841 rocker_port->dev->ifindex);
4842 err = rocker_port_vlan(rocker_port, 0, 0);
e47172ab
SF		 4843 if (err)
4844 return err;
4845
4846 if (rocker_port->dev->flags & IFF_UP)
4847 err = rocker_port_fwd_enable(rocker_port);
6c707945
SF		 4848
4849 return err;
4850}
4851
4852static int rocker_port_master_changed(struct net_device *dev)
4853{
4854 struct rocker_port *rocker_port = netdev_priv(dev);
4855 struct net_device *master = netdev_master_upper_dev_get(dev);
4856 int err = 0;
4857
4858 if (master && master->rtnl_link_ops &&
4859 !strcmp(master->rtnl_link_ops->kind, "bridge"))
4860 err = rocker_port_bridge_join(rocker_port, master);
4861 else
4862 err = rocker_port_bridge_leave(rocker_port);
4863
4864 return err;
4865}
4866
4867static int rocker_netdevice_event(struct notifier_block *unused,
4868 unsigned long event, void *ptr)
4869{
4870 struct net_device *dev;
4871 int err;
4872
4873 switch (event) {
4874 case NETDEV_CHANGEUPPER:
4875 dev = netdev_notifier_info_to_dev(ptr);
4876 if (!rocker_port_dev_check(dev))
4877 return NOTIFY_DONE;
4878 err = rocker_port_master_changed(dev);
4879 if (err)
4880 netdev_warn(dev,
4881 "failed to reflect master change (err %d)\n",
4882 err);
4883 break;
4884 }
4885
4886 return NOTIFY_DONE;
4887}
4888
4889static struct notifier_block rocker_netdevice_nb __read_mostly = {
4890 .notifier_call = rocker_netdevice_event,
4891};
4892
c1beeef7
SF		 4893/************************************
4894 * Net event notifier event handler
4895 ************************************/
4896
4897static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
4898{
4899 struct rocker_port *rocker_port = netdev_priv(dev);
4900 int flags = (n->nud_state & NUD_VALID) ? 0 : ROCKER_OP_FLAG_REMOVE;
4901 __be32 ip_addr = *(__be32 *)n->primary_key;
4902
4903 return rocker_port_ipv4_neigh(rocker_port, flags, ip_addr, n->ha);
4904}
4905
4906static int rocker_netevent_event(struct notifier_block *unused,
4907 unsigned long event, void *ptr)
4908{
4909 struct net_device *dev;
4910 struct neighbour *n = ptr;
4911 int err;
4912
4913 switch (event) {
4914 case NETEVENT_NEIGH_UPDATE:
4915 if (n->tbl != &arp_tbl)
4916 return NOTIFY_DONE;
4917 dev = n->dev;
4918 if (!rocker_port_dev_check(dev))
4919 return NOTIFY_DONE;
4920 err = rocker_neigh_update(dev, n);
4921 if (err)
4922 netdev_warn(dev,
4923 "failed to handle neigh update (err %d)\n",
4924 err);
4925 break;
4926 }
4927
4928 return NOTIFY_DONE;
4929}
4930
4931static struct notifier_block rocker_netevent_nb __read_mostly = {
4932 .notifier_call = rocker_netevent_event,
4933};
4934
4b8ac966
JP		 4935/***********************
4936 * Module init and exit
4937 ***********************/
4938
4939static int __init rocker_module_init(void)
4940{
6c707945
SF		 4941 int err;
4942
4943 register_netdevice_notifier(&rocker_netdevice_nb);
c1beeef7 4944 register_netevent_notifier(&rocker_netevent_nb);
6c707945
SF		 4945 err = pci_register_driver(&rocker_pci_driver);
4946 if (err)
4947 goto err_pci_register_driver;
4948 return 0;
4949
4950err_pci_register_driver:
c1beeef7 4951 unregister_netdevice_notifier(&rocker_netevent_nb);
6c707945
SF		 4952 unregister_netdevice_notifier(&rocker_netdevice_nb);
4953 return err;
4b8ac966
JP		 4954}
4955
4956static void __exit rocker_module_exit(void)
4957{
c1beeef7 4958 unregister_netevent_notifier(&rocker_netevent_nb);
6c707945 4959 unregister_netdevice_notifier(&rocker_netdevice_nb);
4b8ac966
JP		 4960 pci_unregister_driver(&rocker_pci_driver);
4961}
4962
4963module_init(rocker_module_init);
4964module_exit(rocker_module_exit);
4965
4966MODULE_LICENSE("GPL v2");
4967MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
4968MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
4969MODULE_DESCRIPTION("Rocker switch device driver");
4970MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);
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