]> git.proxmox.com Git - mirror_ubuntu-focal-kernel.git/blame - drivers/net/ethernet/rocker/rocker.c
projects / mirror_ubuntu-focal-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
rocker: add ndo_bridge_setlink/getlink support for learning policy
[mirror_ubuntu-focal-kernel.git] / drivers / net / ethernet / rocker / rocker.c
CommitLineData
4b8ac966
JP		 1/*
2 * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
3 * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
4 * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/pci.h>
15#include <linux/interrupt.h>
16#include <linux/sched.h>
17#include <linux/wait.h>
18#include <linux/spinlock.h>
9f6bbf7c 19#include <linux/hashtable.h>
4b8ac966
JP		 20#include <linux/crc32.h>
21#include <linux/sort.h>
22#include <linux/random.h>
23#include <linux/netdevice.h>
24#include <linux/inetdevice.h>
25#include <linux/skbuff.h>
26#include <linux/socket.h>
27#include <linux/etherdevice.h>
28#include <linux/ethtool.h>
29#include <linux/if_ether.h>
30#include <linux/if_vlan.h>
6c707945 31#include <linux/if_bridge.h>
9f6bbf7c 32#include <linux/bitops.h>
4b8ac966
JP		 33#include <net/switchdev.h>
34#include <net/rtnetlink.h>
35#include <asm-generic/io-64-nonatomic-lo-hi.h>
36#include <generated/utsrelease.h>
37
38#include "rocker.h"
39
40static const char rocker_driver_name[] = "rocker";
41
42static const struct pci_device_id rocker_pci_id_table[] = {
43 {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
44 {0, }
45};
46
9f6bbf7c
SF		 47struct rocker_flow_tbl_key {
48 u32 priority;
49 enum rocker_of_dpa_table_id tbl_id;
50 union {
51 struct {
52 u32 in_lport;
53 u32 in_lport_mask;
54 enum rocker_of_dpa_table_id goto_tbl;
55 } ig_port;
56 struct {
57 u32 in_lport;
58 __be16 vlan_id;
59 __be16 vlan_id_mask;
60 enum rocker_of_dpa_table_id goto_tbl;
61 bool untagged;
62 __be16 new_vlan_id;
63 } vlan;
64 struct {
65 u32 in_lport;
66 u32 in_lport_mask;
67 __be16 eth_type;
68 u8 eth_dst[ETH_ALEN];
69 u8 eth_dst_mask[ETH_ALEN];
70 __be16 vlan_id;
71 __be16 vlan_id_mask;
72 enum rocker_of_dpa_table_id goto_tbl;
73 bool copy_to_cpu;
74 } term_mac;
75 struct {
76 __be16 eth_type;
77 __be32 dst4;
78 __be32 dst4_mask;
79 enum rocker_of_dpa_table_id goto_tbl;
80 u32 group_id;
81 } ucast_routing;
82 struct {
83 u8 eth_dst[ETH_ALEN];
84 u8 eth_dst_mask[ETH_ALEN];
85 int has_eth_dst;
86 int has_eth_dst_mask;
87 __be16 vlan_id;
88 u32 tunnel_id;
89 enum rocker_of_dpa_table_id goto_tbl;
90 u32 group_id;
91 bool copy_to_cpu;
92 } bridge;
93 struct {
94 u32 in_lport;
95 u32 in_lport_mask;
96 u8 eth_src[ETH_ALEN];
97 u8 eth_src_mask[ETH_ALEN];
98 u8 eth_dst[ETH_ALEN];
99 u8 eth_dst_mask[ETH_ALEN];
100 __be16 eth_type;
101 __be16 vlan_id;
102 __be16 vlan_id_mask;
103 u8 ip_proto;
104 u8 ip_proto_mask;
105 u8 ip_tos;
106 u8 ip_tos_mask;
107 u32 group_id;
108 } acl;
109 };
110};
111
112struct rocker_flow_tbl_entry {
113 struct hlist_node entry;
114 u32 ref_count;
115 u64 cookie;
116 struct rocker_flow_tbl_key key;
117 u32 key_crc32; /* key */
118};
119
120struct rocker_group_tbl_entry {
121 struct hlist_node entry;
122 u32 cmd;
123 u32 group_id; /* key */
124 u16 group_count;
125 u32 *group_ids;
126 union {
127 struct {
128 u8 pop_vlan;
129 } l2_interface;
130 struct {
131 u8 eth_src[ETH_ALEN];
132 u8 eth_dst[ETH_ALEN];
133 __be16 vlan_id;
134 u32 group_id;
135 } l2_rewrite;
136 struct {
137 u8 eth_src[ETH_ALEN];
138 u8 eth_dst[ETH_ALEN];
139 __be16 vlan_id;
140 bool ttl_check;
141 u32 group_id;
142 } l3_unicast;
143 };
144};
145
146struct rocker_fdb_tbl_entry {
147 struct hlist_node entry;
148 u32 key_crc32; /* key */
149 bool learned;
150 struct rocker_fdb_tbl_key {
151 u32 lport;
152 u8 addr[ETH_ALEN];
153 __be16 vlan_id;
154 } key;
155};
156
157struct rocker_internal_vlan_tbl_entry {
158 struct hlist_node entry;
159 int ifindex; /* key */
160 u32 ref_count;
161 __be16 vlan_id;
162};
163
4b8ac966
JP		 164struct rocker_desc_info {
165 char *data; /* mapped */
166 size_t data_size;
167 size_t tlv_size;
168 struct rocker_desc *desc;
169 DEFINE_DMA_UNMAP_ADDR(mapaddr);
170};
171
172struct rocker_dma_ring_info {
173 size_t size;
174 u32 head;
175 u32 tail;
176 struct rocker_desc *desc; /* mapped */
177 dma_addr_t mapaddr;
178 struct rocker_desc_info *desc_info;
179 unsigned int type;
180};
181
182struct rocker;
183
9f6bbf7c
SF		 184enum {
185 ROCKER_CTRL_LINK_LOCAL_MCAST,
186 ROCKER_CTRL_LOCAL_ARP,
187 ROCKER_CTRL_IPV4_MCAST,
188 ROCKER_CTRL_IPV6_MCAST,
189 ROCKER_CTRL_DFLT_BRIDGING,
190 ROCKER_CTRL_MAX,
191};
192
193#define ROCKER_INTERNAL_VLAN_ID_BASE 0x0f00
194#define ROCKER_N_INTERNAL_VLANS 255
195#define ROCKER_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
196#define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
197
4b8ac966
JP		 198struct rocker_port {
199 struct net_device *dev;
6c707945 200 struct net_device *bridge_dev;
4b8ac966
JP		 201 struct rocker *rocker;
202 unsigned int port_number;
203 u32 lport;
9f6bbf7c 204 __be16 internal_vlan_id;
6c707945 205 int stp_state;
5111f80c 206 u32 brport_flags;
9f6bbf7c
SF		 207 bool ctrls[ROCKER_CTRL_MAX];
208 unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
4b8ac966
JP		 209 struct napi_struct napi_tx;
210 struct napi_struct napi_rx;
211 struct rocker_dma_ring_info tx_ring;
212 struct rocker_dma_ring_info rx_ring;
213};
214
215struct rocker {
216 struct pci_dev *pdev;
217 u8 __iomem *hw_addr;
218 struct msix_entry *msix_entries;
219 unsigned int port_count;
220 struct rocker_port **ports;
221 struct {
222 u64 id;
223 } hw;
224 spinlock_t cmd_ring_lock;
225 struct rocker_dma_ring_info cmd_ring;
226 struct rocker_dma_ring_info event_ring;
9f6bbf7c
SF		 227 DECLARE_HASHTABLE(flow_tbl, 16);
228 spinlock_t flow_tbl_lock;
229 u64 flow_tbl_next_cookie;
230 DECLARE_HASHTABLE(group_tbl, 16);
231 spinlock_t group_tbl_lock;
232 DECLARE_HASHTABLE(fdb_tbl, 16);
233 spinlock_t fdb_tbl_lock;
234 unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
235 DECLARE_HASHTABLE(internal_vlan_tbl, 8);
236 spinlock_t internal_vlan_tbl_lock;
237};
238
239static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
240static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
241static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
242static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
243static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
244static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
245static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
246static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
247static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
248
249/* Rocker priority levels for flow table entries. Higher
250 * priority match takes precedence over lower priority match.
251 */
252
253enum {
254 ROCKER_PRIORITY_UNKNOWN = 0,
255 ROCKER_PRIORITY_IG_PORT = 1,
256 ROCKER_PRIORITY_VLAN = 1,
257 ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
258 ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
259 ROCKER_PRIORITY_UNICAST_ROUTING = 1,
260 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
261 ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
262 ROCKER_PRIORITY_BRIDGING_VLAN = 3,
263 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
264 ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
265 ROCKER_PRIORITY_BRIDGING_TENANT = 3,
266 ROCKER_PRIORITY_ACL_CTRL = 3,
267 ROCKER_PRIORITY_ACL_NORMAL = 2,
268 ROCKER_PRIORITY_ACL_DFLT = 1,
4b8ac966
JP		 269};
270
9f6bbf7c
SF		 271static bool rocker_vlan_id_is_internal(__be16 vlan_id)
272{
273 u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
274 u16 end = 0xffe;
275 u16 _vlan_id = ntohs(vlan_id);
276
277 return (_vlan_id >= start && _vlan_id <= end);
278}
279
280static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port,
281 u16 vid, bool *pop_vlan)
282{
283 __be16 vlan_id;
284
285 if (pop_vlan)
286 *pop_vlan = false;
287 vlan_id = htons(vid);
288 if (!vlan_id) {
289 vlan_id = rocker_port->internal_vlan_id;
290 if (pop_vlan)
291 *pop_vlan = true;
292 }
293
294 return vlan_id;
295}
296
6c707945
SF		 297static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port,
298 __be16 vlan_id)
299{
300 if (rocker_vlan_id_is_internal(vlan_id))
301 return 0;
302
303 return ntohs(vlan_id);
304}
305
306static bool rocker_port_is_bridged(struct rocker_port *rocker_port)
307{
308 return !!rocker_port->bridge_dev;
309}
310
4b8ac966
JP		 311struct rocker_wait {
312 wait_queue_head_t wait;
313 bool done;
314 bool nowait;
315};
316
317static void rocker_wait_reset(struct rocker_wait *wait)
318{
319 wait->done = false;
320 wait->nowait = false;
321}
322
323static void rocker_wait_init(struct rocker_wait *wait)
324{
325 init_waitqueue_head(&wait->wait);
326 rocker_wait_reset(wait);
327}
328
329static struct rocker_wait *rocker_wait_create(gfp_t gfp)
330{
331 struct rocker_wait *wait;
332
333 wait = kmalloc(sizeof(*wait), gfp);
334 if (!wait)
335 return NULL;
336 rocker_wait_init(wait);
337 return wait;
338}
339
340static void rocker_wait_destroy(struct rocker_wait *work)
341{
342 kfree(work);
343}
344
345static bool rocker_wait_event_timeout(struct rocker_wait *wait,
346 unsigned long timeout)
347{
348 wait_event_timeout(wait->wait, wait->done, HZ / 10);
349 if (!wait->done)
350 return false;
351 return true;
352}
353
354static void rocker_wait_wake_up(struct rocker_wait *wait)
355{
356 wait->done = true;
357 wake_up(&wait->wait);
358}
359
360static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector)
361{
362 return rocker->msix_entries[vector].vector;
363}
364
365static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port)
366{
367 return rocker_msix_vector(rocker_port->rocker,
368 ROCKER_MSIX_VEC_TX(rocker_port->port_number));
369}
370
371static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port)
372{
373 return rocker_msix_vector(rocker_port->rocker,
374 ROCKER_MSIX_VEC_RX(rocker_port->port_number));
375}
376
377#define rocker_write32(rocker, reg, val) \
378 writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
379#define rocker_read32(rocker, reg) \
380 readl((rocker)->hw_addr + (ROCKER_ ## reg))
381#define rocker_write64(rocker, reg, val) \
382 writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
383#define rocker_read64(rocker, reg) \
384 readq((rocker)->hw_addr + (ROCKER_ ## reg))
385
386/*****************************
387 * HW basic testing functions
388 *****************************/
389
390static int rocker_reg_test(struct rocker *rocker)
391{
392 struct pci_dev *pdev = rocker->pdev;
393 u64 test_reg;
394 u64 rnd;
395
396 rnd = prandom_u32();
397 rnd >>= 1;
398 rocker_write32(rocker, TEST_REG, rnd);
399 test_reg = rocker_read32(rocker, TEST_REG);
400 if (test_reg != rnd * 2) {
401 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
402 test_reg, rnd * 2);
403 return -EIO;
404 }
405
406 rnd = prandom_u32();
407 rnd <<= 31;
408 rnd |= prandom_u32();
409 rocker_write64(rocker, TEST_REG64, rnd);
410 test_reg = rocker_read64(rocker, TEST_REG64);
411 if (test_reg != rnd * 2) {
412 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
413 test_reg, rnd * 2);
414 return -EIO;
415 }
416
417 return 0;
418}
419
420static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait,
421 u32 test_type, dma_addr_t dma_handle,
422 unsigned char *buf, unsigned char *expect,
423 size_t size)
424{
425 struct pci_dev *pdev = rocker->pdev;
426 int i;
427
428 rocker_wait_reset(wait);
429 rocker_write32(rocker, TEST_DMA_CTRL, test_type);
430
431 if (!rocker_wait_event_timeout(wait, HZ / 10)) {
432 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
433 return -EIO;
434 }
435
436 for (i = 0; i < size; i++) {
437 if (buf[i] != expect[i]) {
438 dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
439 buf[i], i, expect[i]);
440 return -EIO;
441 }
442 }
443 return 0;
444}
445
446#define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
447#define ROCKER_TEST_DMA_FILL_PATTERN 0x96
448
449static int rocker_dma_test_offset(struct rocker *rocker,
450 struct rocker_wait *wait, int offset)
451{
452 struct pci_dev *pdev = rocker->pdev;
453 unsigned char *alloc;
454 unsigned char *buf;
455 unsigned char *expect;
456 dma_addr_t dma_handle;
457 int i;
458 int err;
459
460 alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
461 GFP_KERNEL | GFP_DMA);
462 if (!alloc)
463 return -ENOMEM;
464 buf = alloc + offset;
465 expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
466
467 dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
468 PCI_DMA_BIDIRECTIONAL);
469 if (pci_dma_mapping_error(pdev, dma_handle)) {
470 err = -EIO;
471 goto free_alloc;
472 }
473
474 rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
475 rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
476
477 memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
478 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
479 dma_handle, buf, expect,
480 ROCKER_TEST_DMA_BUF_SIZE);
481 if (err)
482 goto unmap;
483
484 memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
485 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
486 dma_handle, buf, expect,
487 ROCKER_TEST_DMA_BUF_SIZE);
488 if (err)
489 goto unmap;
490
491 prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
492 for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
493 expect[i] = ~buf[i];
494 err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
495 dma_handle, buf, expect,
496 ROCKER_TEST_DMA_BUF_SIZE);
497 if (err)
498 goto unmap;
499
500unmap:
501 pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
502 PCI_DMA_BIDIRECTIONAL);
503free_alloc:
504 kfree(alloc);
505
506 return err;
507}
508
509static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait)
510{
511 int i;
512 int err;
513
514 for (i = 0; i < 8; i++) {
515 err = rocker_dma_test_offset(rocker, wait, i);
516 if (err)
517 return err;
518 }
519 return 0;
520}
521
522static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
523{
524 struct rocker_wait *wait = dev_id;
525
526 rocker_wait_wake_up(wait);
527
528 return IRQ_HANDLED;
529}
530
531static int rocker_basic_hw_test(struct rocker *rocker)
532{
533 struct pci_dev *pdev = rocker->pdev;
534 struct rocker_wait wait;
535 int err;
536
537 err = rocker_reg_test(rocker);
538 if (err) {
539 dev_err(&pdev->dev, "reg test failed\n");
540 return err;
541 }
542
543 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
544 rocker_test_irq_handler, 0,
545 rocker_driver_name, &wait);
546 if (err) {
547 dev_err(&pdev->dev, "cannot assign test irq\n");
548 return err;
549 }
550
551 rocker_wait_init(&wait);
552 rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
553
554 if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
555 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
556 err = -EIO;
557 goto free_irq;
558 }
559
560 err = rocker_dma_test(rocker, &wait);
561 if (err)
562 dev_err(&pdev->dev, "dma test failed\n");
563
564free_irq:
565 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
566 return err;
567}
568
569/******
570 * TLV
571 ******/
572
573#define ROCKER_TLV_ALIGNTO 8U
574#define ROCKER_TLV_ALIGN(len) \
575 (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
576#define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
577
578/* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
579 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
580 * | Header | Pad | Payload | Pad |
581 * | (struct rocker_tlv) | ing | | ing |
582 * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
583 * <--------------------------- tlv->len -------------------------->
584 */
585
586static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
587 int *remaining)
588{
589 int totlen = ROCKER_TLV_ALIGN(tlv->len);
590
591 *remaining -= totlen;
592 return (struct rocker_tlv *) ((char *) tlv + totlen);
593}
594
595static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
596{
597 return remaining >= (int) ROCKER_TLV_HDRLEN &&
598 tlv->len >= ROCKER_TLV_HDRLEN &&
599 tlv->len <= remaining;
600}
601
602#define rocker_tlv_for_each(pos, head, len, rem) \
603 for (pos = head, rem = len; \
604 rocker_tlv_ok(pos, rem); \
605 pos = rocker_tlv_next(pos, &(rem)))
606
607#define rocker_tlv_for_each_nested(pos, tlv, rem) \
608 rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \
609 rocker_tlv_len(tlv), rem)
610
611static int rocker_tlv_attr_size(int payload)
612{
613 return ROCKER_TLV_HDRLEN + payload;
614}
615
616static int rocker_tlv_total_size(int payload)
617{
618 return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
619}
620
621static int rocker_tlv_padlen(int payload)
622{
623 return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
624}
625
626static int rocker_tlv_type(const struct rocker_tlv *tlv)
627{
628 return tlv->type;
629}
630
631static void *rocker_tlv_data(const struct rocker_tlv *tlv)
632{
633 return (char *) tlv + ROCKER_TLV_HDRLEN;
634}
635
636static int rocker_tlv_len(const struct rocker_tlv *tlv)
637{
638 return tlv->len - ROCKER_TLV_HDRLEN;
639}
640
641static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
642{
643 return *(u8 *) rocker_tlv_data(tlv);
644}
645
646static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
647{
648 return *(u16 *) rocker_tlv_data(tlv);
649}
650
651static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
652{
653 return *(u32 *) rocker_tlv_data(tlv);
654}
655
656static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
657{
658 return *(u64 *) rocker_tlv_data(tlv);
659}
660
661static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
662 const char *buf, int buf_len)
663{
664 const struct rocker_tlv *tlv;
665 const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
666 int rem;
667
668 memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
669
670 rocker_tlv_for_each(tlv, head, buf_len, rem) {
671 u32 type = rocker_tlv_type(tlv);
672
673 if (type > 0 && type <= maxtype)
674 tb[type] = (struct rocker_tlv *) tlv;
675 }
676}
677
678static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
679 const struct rocker_tlv *tlv)
680{
681 rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
682 rocker_tlv_len(tlv));
683}
684
685static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
686 struct rocker_desc_info *desc_info)
687{
688 rocker_tlv_parse(tb, maxtype, desc_info->data,
689 desc_info->desc->tlv_size);
690}
691
692static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
693{
694 return (struct rocker_tlv *) ((char *) desc_info->data +
695 desc_info->tlv_size);
696}
697
698static int rocker_tlv_put(struct rocker_desc_info *desc_info,
699 int attrtype, int attrlen, const void *data)
700{
701 int tail_room = desc_info->data_size - desc_info->tlv_size;
702 int total_size = rocker_tlv_total_size(attrlen);
703 struct rocker_tlv *tlv;
704
705 if (unlikely(tail_room < total_size))
706 return -EMSGSIZE;
707
708 tlv = rocker_tlv_start(desc_info);
709 desc_info->tlv_size += total_size;
710 tlv->type = attrtype;
711 tlv->len = rocker_tlv_attr_size(attrlen);
712 memcpy(rocker_tlv_data(tlv), data, attrlen);
713 memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
714 return 0;
715}
716
717static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
718 int attrtype, u8 value)
719{
720 return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
721}
722
723static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
724 int attrtype, u16 value)
725{
726 return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
727}
728
729static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
730 int attrtype, u32 value)
731{
732 return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
733}
734
735static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
736 int attrtype, u64 value)
737{
738 return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
739}
740
741static struct rocker_tlv *
742rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
743{
744 struct rocker_tlv *start = rocker_tlv_start(desc_info);
745
746 if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
747 return NULL;
748
749 return start;
750}
751
752static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
753 struct rocker_tlv *start)
754{
755 start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
756}
757
758static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
759 struct rocker_tlv *start)
760{
761 desc_info->tlv_size = (char *) start - desc_info->data;
762}
763
764/******************************************
765 * DMA rings and descriptors manipulations
766 ******************************************/
767
768static u32 __pos_inc(u32 pos, size_t limit)
769{
770 return ++pos == limit ? 0 : pos;
771}
772
773static int rocker_desc_err(struct rocker_desc_info *desc_info)
774{
775 return -(desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN);
776}
777
778static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
779{
780 desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
781}
782
783static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
784{
785 u32 comp_err = desc_info->desc->comp_err;
786
787 return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
788}
789
790static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
791{
792 return (void *) desc_info->desc->cookie;
793}
794
795static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
796 void *ptr)
797{
798 desc_info->desc->cookie = (long) ptr;
799}
800
801static struct rocker_desc_info *
802rocker_desc_head_get(struct rocker_dma_ring_info *info)
803{
804 static struct rocker_desc_info *desc_info;
805 u32 head = __pos_inc(info->head, info->size);
806
807 desc_info = &info->desc_info[info->head];
808 if (head == info->tail)
809 return NULL; /* ring full */
810 desc_info->tlv_size = 0;
811 return desc_info;
812}
813
814static void rocker_desc_commit(struct rocker_desc_info *desc_info)
815{
816 desc_info->desc->buf_size = desc_info->data_size;
817 desc_info->desc->tlv_size = desc_info->tlv_size;
818}
819
820static void rocker_desc_head_set(struct rocker *rocker,
821 struct rocker_dma_ring_info *info,
822 struct rocker_desc_info *desc_info)
823{
824 u32 head = __pos_inc(info->head, info->size);
825
826 BUG_ON(head == info->tail);
827 rocker_desc_commit(desc_info);
828 info->head = head;
829 rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
830}
831
832static struct rocker_desc_info *
833rocker_desc_tail_get(struct rocker_dma_ring_info *info)
834{
835 static struct rocker_desc_info *desc_info;
836
837 if (info->tail == info->head)
838 return NULL; /* nothing to be done between head and tail */
839 desc_info = &info->desc_info[info->tail];
840 if (!rocker_desc_gen(desc_info))
841 return NULL; /* gen bit not set, desc is not ready yet */
842 info->tail = __pos_inc(info->tail, info->size);
843 desc_info->tlv_size = desc_info->desc->tlv_size;
844 return desc_info;
845}
846
847static void rocker_dma_ring_credits_set(struct rocker *rocker,
848 struct rocker_dma_ring_info *info,
849 u32 credits)
850{
851 if (credits)
852 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
853}
854
855static unsigned long rocker_dma_ring_size_fix(size_t size)
856{
857 return max(ROCKER_DMA_SIZE_MIN,
858 min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
859}
860
861static int rocker_dma_ring_create(struct rocker *rocker,
862 unsigned int type,
863 size_t size,
864 struct rocker_dma_ring_info *info)
865{
866 int i;
867
868 BUG_ON(size != rocker_dma_ring_size_fix(size));
869 info->size = size;
870 info->type = type;
871 info->head = 0;
872 info->tail = 0;
873 info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
874 GFP_KERNEL);
875 if (!info->desc_info)
876 return -ENOMEM;
877
878 info->desc = pci_alloc_consistent(rocker->pdev,
879 info->size * sizeof(*info->desc),
880 &info->mapaddr);
881 if (!info->desc) {
882 kfree(info->desc_info);
883 return -ENOMEM;
884 }
885
886 for (i = 0; i < info->size; i++)
887 info->desc_info[i].desc = &info->desc[i];
888
889 rocker_write32(rocker, DMA_DESC_CTRL(info->type),
890 ROCKER_DMA_DESC_CTRL_RESET);
891 rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
892 rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
893
894 return 0;
895}
896
897static void rocker_dma_ring_destroy(struct rocker *rocker,
898 struct rocker_dma_ring_info *info)
899{
900 rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
901
902 pci_free_consistent(rocker->pdev,
903 info->size * sizeof(struct rocker_desc),
904 info->desc, info->mapaddr);
905 kfree(info->desc_info);
906}
907
908static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
909 struct rocker_dma_ring_info *info)
910{
911 int i;
912
913 BUG_ON(info->head || info->tail);
914
915 /* When ring is consumer, we need to advance head for each desc.
916 * That tells hw that the desc is ready to be used by it.
917 */
918 for (i = 0; i < info->size - 1; i++)
919 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
920 rocker_desc_commit(&info->desc_info[i]);
921}
922
923static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
924 struct rocker_dma_ring_info *info,
925 int direction, size_t buf_size)
926{
927 struct pci_dev *pdev = rocker->pdev;
928 int i;
929 int err;
930
931 for (i = 0; i < info->size; i++) {
932 struct rocker_desc_info *desc_info = &info->desc_info[i];
933 struct rocker_desc *desc = &info->desc[i];
934 dma_addr_t dma_handle;
935 char *buf;
936
937 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
938 if (!buf) {
939 err = -ENOMEM;
940 goto rollback;
941 }
942
943 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
944 if (pci_dma_mapping_error(pdev, dma_handle)) {
945 kfree(buf);
946 err = -EIO;
947 goto rollback;
948 }
949
950 desc_info->data = buf;
951 desc_info->data_size = buf_size;
952 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
953
954 desc->buf_addr = dma_handle;
955 desc->buf_size = buf_size;
956 }
957 return 0;
958
959rollback:
960 for (i--; i >= 0; i--) {
961 struct rocker_desc_info *desc_info = &info->desc_info[i];
962
963 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
964 desc_info->data_size, direction);
965 kfree(desc_info->data);
966 }
967 return err;
968}
969
970static void rocker_dma_ring_bufs_free(struct rocker *rocker,
971 struct rocker_dma_ring_info *info,
972 int direction)
973{
974 struct pci_dev *pdev = rocker->pdev;
975 int i;
976
977 for (i = 0; i < info->size; i++) {
978 struct rocker_desc_info *desc_info = &info->desc_info[i];
979 struct rocker_desc *desc = &info->desc[i];
980
981 desc->buf_addr = 0;
982 desc->buf_size = 0;
983 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
984 desc_info->data_size, direction);
985 kfree(desc_info->data);
986 }
987}
988
989static int rocker_dma_rings_init(struct rocker *rocker)
990{
991 struct pci_dev *pdev = rocker->pdev;
992 int err;
993
994 err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
995 ROCKER_DMA_CMD_DEFAULT_SIZE,
996 &rocker->cmd_ring);
997 if (err) {
998 dev_err(&pdev->dev, "failed to create command dma ring\n");
999 return err;
1000 }
1001
1002 spin_lock_init(&rocker->cmd_ring_lock);
1003
1004 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1005 PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1006 if (err) {
1007 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1008 goto err_dma_cmd_ring_bufs_alloc;
1009 }
1010
1011 err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1012 ROCKER_DMA_EVENT_DEFAULT_SIZE,
1013 &rocker->event_ring);
1014 if (err) {
1015 dev_err(&pdev->dev, "failed to create event dma ring\n");
1016 goto err_dma_event_ring_create;
1017 }
1018
1019 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1020 PCI_DMA_FROMDEVICE, PAGE_SIZE);
1021 if (err) {
1022 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1023 goto err_dma_event_ring_bufs_alloc;
1024 }
1025 rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1026 return 0;
1027
1028err_dma_event_ring_bufs_alloc:
1029 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1030err_dma_event_ring_create:
1031 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1032 PCI_DMA_BIDIRECTIONAL);
1033err_dma_cmd_ring_bufs_alloc:
1034 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1035 return err;
1036}
1037
1038static void rocker_dma_rings_fini(struct rocker *rocker)
1039{
1040 rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1041 PCI_DMA_BIDIRECTIONAL);
1042 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1043 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1044 PCI_DMA_BIDIRECTIONAL);
1045 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1046}
1047
1048static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1049 struct rocker_port *rocker_port,
1050 struct rocker_desc_info *desc_info,
1051 struct sk_buff *skb, size_t buf_len)
1052{
1053 struct pci_dev *pdev = rocker->pdev;
1054 dma_addr_t dma_handle;
1055
1056 dma_handle = pci_map_single(pdev, skb->data, buf_len,
1057 PCI_DMA_FROMDEVICE);
1058 if (pci_dma_mapping_error(pdev, dma_handle))
1059 return -EIO;
1060 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1061 goto tlv_put_failure;
1062 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1063 goto tlv_put_failure;
1064 return 0;
1065
1066tlv_put_failure:
1067 pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1068 desc_info->tlv_size = 0;
1069 return -EMSGSIZE;
1070}
1071
1072static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1073{
1074 return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1075}
1076
1077static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1078 struct rocker_port *rocker_port,
1079 struct rocker_desc_info *desc_info)
1080{
1081 struct net_device *dev = rocker_port->dev;
1082 struct sk_buff *skb;
1083 size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1084 int err;
1085
1086 /* Ensure that hw will see tlv_size zero in case of an error.
1087 * That tells hw to use another descriptor.
1088 */
1089 rocker_desc_cookie_ptr_set(desc_info, NULL);
1090 desc_info->tlv_size = 0;
1091
1092 skb = netdev_alloc_skb_ip_align(dev, buf_len);
1093 if (!skb)
1094 return -ENOMEM;
1095 err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1096 skb, buf_len);
1097 if (err) {
1098 dev_kfree_skb_any(skb);
1099 return err;
1100 }
1101 rocker_desc_cookie_ptr_set(desc_info, skb);
1102 return 0;
1103}
1104
1105static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1106 struct rocker_tlv **attrs)
1107{
1108 struct pci_dev *pdev = rocker->pdev;
1109 dma_addr_t dma_handle;
1110 size_t len;
1111
1112 if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1113 !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1114 return;
1115 dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1116 len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1117 pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1118}
1119
1120static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1121 struct rocker_desc_info *desc_info)
1122{
1123 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1124 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1125
1126 if (!skb)
1127 return;
1128 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1129 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1130 dev_kfree_skb_any(skb);
1131}
1132
1133static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1134 struct rocker_port *rocker_port)
1135{
1136 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1137 int i;
1138 int err;
1139
1140 for (i = 0; i < rx_ring->size; i++) {
1141 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1142 &rx_ring->desc_info[i]);
1143 if (err)
1144 goto rollback;
1145 }
1146 return 0;
1147
1148rollback:
1149 for (i--; i >= 0; i--)
1150 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1151 return err;
1152}
1153
1154static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1155 struct rocker_port *rocker_port)
1156{
1157 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1158 int i;
1159
1160 for (i = 0; i < rx_ring->size; i++)
1161 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1162}
1163
1164static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1165{
1166 struct rocker *rocker = rocker_port->rocker;
1167 int err;
1168
1169 err = rocker_dma_ring_create(rocker,
1170 ROCKER_DMA_TX(rocker_port->port_number),
1171 ROCKER_DMA_TX_DEFAULT_SIZE,
1172 &rocker_port->tx_ring);
1173 if (err) {
1174 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1175 return err;
1176 }
1177
1178 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1179 PCI_DMA_TODEVICE,
1180 ROCKER_DMA_TX_DESC_SIZE);
1181 if (err) {
1182 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1183 goto err_dma_tx_ring_bufs_alloc;
1184 }
1185
1186 err = rocker_dma_ring_create(rocker,
1187 ROCKER_DMA_RX(rocker_port->port_number),
1188 ROCKER_DMA_RX_DEFAULT_SIZE,
1189 &rocker_port->rx_ring);
1190 if (err) {
1191 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1192 goto err_dma_rx_ring_create;
1193 }
1194
1195 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1196 PCI_DMA_BIDIRECTIONAL,
1197 ROCKER_DMA_RX_DESC_SIZE);
1198 if (err) {
1199 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1200 goto err_dma_rx_ring_bufs_alloc;
1201 }
1202
1203 err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1204 if (err) {
1205 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1206 goto err_dma_rx_ring_skbs_alloc;
1207 }
1208 rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1209
1210 return 0;
1211
1212err_dma_rx_ring_skbs_alloc:
1213 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1214 PCI_DMA_BIDIRECTIONAL);
1215err_dma_rx_ring_bufs_alloc:
1216 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1217err_dma_rx_ring_create:
1218 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1219 PCI_DMA_TODEVICE);
1220err_dma_tx_ring_bufs_alloc:
1221 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1222 return err;
1223}
1224
1225static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1226{
1227 struct rocker *rocker = rocker_port->rocker;
1228
1229 rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1230 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1231 PCI_DMA_BIDIRECTIONAL);
1232 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1233 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1234 PCI_DMA_TODEVICE);
1235 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1236}
1237
1238static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1239{
1240 u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1241
1242 if (enable)
1243 val |= 1 << rocker_port->lport;
1244 else
1245 val &= ~(1 << rocker_port->lport);
1246 rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1247}
1248
1249/********************************
1250 * Interrupt handler and helpers
1251 ********************************/
1252
1253static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1254{
1255 struct rocker *rocker = dev_id;
1256 struct rocker_desc_info *desc_info;
1257 struct rocker_wait *wait;
1258 u32 credits = 0;
1259
1260 spin_lock(&rocker->cmd_ring_lock);
1261 while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1262 wait = rocker_desc_cookie_ptr_get(desc_info);
1263 if (wait->nowait) {
1264 rocker_desc_gen_clear(desc_info);
1265 rocker_wait_destroy(wait);
1266 } else {
1267 rocker_wait_wake_up(wait);
1268 }
1269 credits++;
1270 }
1271 spin_unlock(&rocker->cmd_ring_lock);
1272 rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1273
1274 return IRQ_HANDLED;
1275}
1276
1277static void rocker_port_link_up(struct rocker_port *rocker_port)
1278{
1279 netif_carrier_on(rocker_port->dev);
1280 netdev_info(rocker_port->dev, "Link is up\n");
1281}
1282
1283static void rocker_port_link_down(struct rocker_port *rocker_port)
1284{
1285 netif_carrier_off(rocker_port->dev);
1286 netdev_info(rocker_port->dev, "Link is down\n");
1287}
1288
1289static int rocker_event_link_change(struct rocker *rocker,
1290 const struct rocker_tlv *info)
1291{
1292 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1293 unsigned int port_number;
1294 bool link_up;
1295 struct rocker_port *rocker_port;
1296
1297 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1298 if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LPORT] ||
1299 !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1300 return -EIO;
1301 port_number =
1302 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LPORT]) - 1;
1303 link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1304
1305 if (port_number >= rocker->port_count)
1306 return -EINVAL;
1307
1308 rocker_port = rocker->ports[port_number];
1309 if (netif_carrier_ok(rocker_port->dev) != link_up) {
1310 if (link_up)
1311 rocker_port_link_up(rocker_port);
1312 else
1313 rocker_port_link_down(rocker_port);
1314 }
1315
1316 return 0;
1317}
1318
9f6bbf7c
SF		 1319#define ROCKER_OP_FLAG_REMOVE BIT(0)
1320#define ROCKER_OP_FLAG_NOWAIT BIT(1)
1321#define ROCKER_OP_FLAG_LEARNED BIT(2)
6c707945
SF		 1322#define ROCKER_OP_FLAG_REFRESH BIT(3)
1323
1324static int rocker_port_fdb(struct rocker_port *rocker_port,
1325 const unsigned char *addr,
1326 __be16 vlan_id, int flags);
1327
1328static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1329 const struct rocker_tlv *info)
1330{
1331 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1332 unsigned int port_number;
1333 struct rocker_port *rocker_port;
1334 unsigned char *addr;
1335 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1336 __be16 vlan_id;
1337
1338 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1339 if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_LPORT] ||
1340 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1341 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1342 return -EIO;
1343 port_number =
1344 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_LPORT]) - 1;
1345 addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1346 vlan_id = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1347
1348 if (port_number >= rocker->port_count)
1349 return -EINVAL;
1350
1351 rocker_port = rocker->ports[port_number];
1352
1353 if (rocker_port->stp_state != BR_STATE_LEARNING &&
1354 rocker_port->stp_state != BR_STATE_FORWARDING)
1355 return 0;
1356
1357 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
1358}
9f6bbf7c 1359
4b8ac966
JP		 1360static int rocker_event_process(struct rocker *rocker,
1361 struct rocker_desc_info *desc_info)
1362{
1363 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1364 struct rocker_tlv *info;
1365 u16 type;
1366
1367 rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1368 if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1369 !attrs[ROCKER_TLV_EVENT_INFO])
1370 return -EIO;
1371
1372 type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1373 info = attrs[ROCKER_TLV_EVENT_INFO];
1374
1375 switch (type) {
1376 case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1377 return rocker_event_link_change(rocker, info);
6c707945
SF		 1378 case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1379 return rocker_event_mac_vlan_seen(rocker, info);
4b8ac966
JP		 1380 }
1381
1382 return -EOPNOTSUPP;
1383}
1384
1385static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1386{
1387 struct rocker *rocker = dev_id;
1388 struct pci_dev *pdev = rocker->pdev;
1389 struct rocker_desc_info *desc_info;
1390 u32 credits = 0;
1391 int err;
1392
1393 while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1394 err = rocker_desc_err(desc_info);
1395 if (err) {
1396 dev_err(&pdev->dev, "event desc received with err %d\n",
1397 err);
1398 } else {
1399 err = rocker_event_process(rocker, desc_info);
1400 if (err)
1401 dev_err(&pdev->dev, "event processing failed with err %d\n",
1402 err);
1403 }
1404 rocker_desc_gen_clear(desc_info);
1405 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1406 credits++;
1407 }
1408 rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1409
1410 return IRQ_HANDLED;
1411}
1412
1413static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1414{
1415 struct rocker_port *rocker_port = dev_id;
1416
1417 napi_schedule(&rocker_port->napi_tx);
1418 return IRQ_HANDLED;
1419}
1420
1421static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1422{
1423 struct rocker_port *rocker_port = dev_id;
1424
1425 napi_schedule(&rocker_port->napi_rx);
1426 return IRQ_HANDLED;
1427}
1428
1429/********************
1430 * Command interface
1431 ********************/
1432
1433typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1434 struct rocker_port *rocker_port,
1435 struct rocker_desc_info *desc_info,
1436 void *priv);
1437
1438static int rocker_cmd_exec(struct rocker *rocker,
1439 struct rocker_port *rocker_port,
1440 rocker_cmd_cb_t prepare, void *prepare_priv,
1441 rocker_cmd_cb_t process, void *process_priv,
1442 bool nowait)
1443{
1444 struct rocker_desc_info *desc_info;
1445 struct rocker_wait *wait;
1446 unsigned long flags;
1447 int err;
1448
1449 wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL);
1450 if (!wait)
1451 return -ENOMEM;
1452 wait->nowait = nowait;
1453
1454 spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1455 desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1456 if (!desc_info) {
1457 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1458 err = -EAGAIN;
1459 goto out;
1460 }
1461 err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1462 if (err) {
1463 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1464 goto out;
1465 }
1466 rocker_desc_cookie_ptr_set(desc_info, wait);
1467 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1468 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1469
1470 if (nowait)
1471 return 0;
1472
1473 if (!rocker_wait_event_timeout(wait, HZ / 10))
1474 return -EIO;
1475
1476 err = rocker_desc_err(desc_info);
1477 if (err)
1478 return err;
1479
1480 if (process)
1481 err = process(rocker, rocker_port, desc_info, process_priv);
1482
1483 rocker_desc_gen_clear(desc_info);
1484out:
1485 rocker_wait_destroy(wait);
1486 return err;
1487}
1488
1489static int
1490rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1491 struct rocker_port *rocker_port,
1492 struct rocker_desc_info *desc_info,
1493 void *priv)
1494{
1495 struct rocker_tlv *cmd_info;
1496
1497 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1498 ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1499 return -EMSGSIZE;
1500 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1501 if (!cmd_info)
1502 return -EMSGSIZE;
1503 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1504 rocker_port->lport))
1505 return -EMSGSIZE;
1506 rocker_tlv_nest_end(desc_info, cmd_info);
1507 return 0;
1508}
1509
1510static int
1511rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1512 struct rocker_port *rocker_port,
1513 struct rocker_desc_info *desc_info,
1514 void *priv)
1515{
1516 struct ethtool_cmd *ecmd = priv;
1517 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1518 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1519 u32 speed;
1520 u8 duplex;
1521 u8 autoneg;
1522
1523 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1524 if (!attrs[ROCKER_TLV_CMD_INFO])
1525 return -EIO;
1526
1527 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1528 attrs[ROCKER_TLV_CMD_INFO]);
1529 if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1530 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1531 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1532 return -EIO;
1533
1534 speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1535 duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1536 autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1537
1538 ecmd->transceiver = XCVR_INTERNAL;
1539 ecmd->supported = SUPPORTED_TP;
1540 ecmd->phy_address = 0xff;
1541 ecmd->port = PORT_TP;
1542 ethtool_cmd_speed_set(ecmd, speed);
1543 ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1544 ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1545
1546 return 0;
1547}
1548
1549static int
1550rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1551 struct rocker_port *rocker_port,
1552 struct rocker_desc_info *desc_info,
1553 void *priv)
1554{
1555 unsigned char *macaddr = priv;
1556 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1557 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1558 struct rocker_tlv *attr;
1559
1560 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1561 if (!attrs[ROCKER_TLV_CMD_INFO])
1562 return -EIO;
1563
1564 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1565 attrs[ROCKER_TLV_CMD_INFO]);
1566 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1567 if (!attr)
1568 return -EIO;
1569
1570 if (rocker_tlv_len(attr) != ETH_ALEN)
1571 return -EINVAL;
1572
1573 ether_addr_copy(macaddr, rocker_tlv_data(attr));
1574 return 0;
1575}
1576
1577static int
1578rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1579 struct rocker_port *rocker_port,
1580 struct rocker_desc_info *desc_info,
1581 void *priv)
1582{
1583 struct ethtool_cmd *ecmd = priv;
1584 struct rocker_tlv *cmd_info;
1585
1586 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1587 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1588 return -EMSGSIZE;
1589 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1590 if (!cmd_info)
1591 return -EMSGSIZE;
1592 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1593 rocker_port->lport))
1594 return -EMSGSIZE;
1595 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1596 ethtool_cmd_speed(ecmd)))
1597 return -EMSGSIZE;
1598 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1599 ecmd->duplex))
1600 return -EMSGSIZE;
1601 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1602 ecmd->autoneg))
1603 return -EMSGSIZE;
1604 rocker_tlv_nest_end(desc_info, cmd_info);
1605 return 0;
1606}
1607
1608static int
1609rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1610 struct rocker_port *rocker_port,
1611 struct rocker_desc_info *desc_info,
1612 void *priv)
1613{
1614 unsigned char *macaddr = priv;
1615 struct rocker_tlv *cmd_info;
1616
1617 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1618 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1619 return -EMSGSIZE;
1620 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1621 if (!cmd_info)
1622 return -EMSGSIZE;
1623 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1624 rocker_port->lport))
1625 return -EMSGSIZE;
1626 if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1627 ETH_ALEN, macaddr))
1628 return -EMSGSIZE;
1629 rocker_tlv_nest_end(desc_info, cmd_info);
1630 return 0;
1631}
1632
5111f80c
SF		 1633static int
1634rocker_cmd_set_port_learning_prep(struct rocker *rocker,
1635 struct rocker_port *rocker_port,
1636 struct rocker_desc_info *desc_info,
1637 void *priv)
1638{
1639 struct rocker_tlv *cmd_info;
1640
1641 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1642 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1643 return -EMSGSIZE;
1644 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1645 if (!cmd_info)
1646 return -EMSGSIZE;
1647 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1648 rocker_port->lport))
1649 return -EMSGSIZE;
1650 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1651 !!(rocker_port->brport_flags & BR_LEARNING)))
1652 return -EMSGSIZE;
1653 rocker_tlv_nest_end(desc_info, cmd_info);
1654 return 0;
1655}
1656
4b8ac966
JP		 1657static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1658 struct ethtool_cmd *ecmd)
1659{
1660 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1661 rocker_cmd_get_port_settings_prep, NULL,
1662 rocker_cmd_get_port_settings_ethtool_proc,
1663 ecmd, false);
1664}
1665
1666static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1667 unsigned char *macaddr)
1668{
1669 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1670 rocker_cmd_get_port_settings_prep, NULL,
1671 rocker_cmd_get_port_settings_macaddr_proc,
1672 macaddr, false);
1673}
1674
1675static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1676 struct ethtool_cmd *ecmd)
1677{
1678 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1679 rocker_cmd_set_port_settings_ethtool_prep,
1680 ecmd, NULL, NULL, false);
1681}
1682
1683static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1684 unsigned char *macaddr)
1685{
1686 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1687 rocker_cmd_set_port_settings_macaddr_prep,
1688 macaddr, NULL, NULL, false);
1689}
1690
5111f80c
SF		 1691static int rocker_port_set_learning(struct rocker_port *rocker_port)
1692{
1693 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1694 rocker_cmd_set_port_learning_prep,
1695 NULL, NULL, NULL, false);
1696}
1697
9f6bbf7c
SF		 1698static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1699 struct rocker_flow_tbl_entry *entry)
1700{
1701 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1702 entry->key.ig_port.in_lport))
1703 return -EMSGSIZE;
1704 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1705 entry->key.ig_port.in_lport_mask))
1706 return -EMSGSIZE;
1707 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1708 entry->key.ig_port.goto_tbl))
1709 return -EMSGSIZE;
1710
1711 return 0;
1712}
1713
1714static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1715 struct rocker_flow_tbl_entry *entry)
1716{
1717 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1718 entry->key.vlan.in_lport))
1719 return -EMSGSIZE;
1720 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1721 entry->key.vlan.vlan_id))
1722 return -EMSGSIZE;
1723 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1724 entry->key.vlan.vlan_id_mask))
1725 return -EMSGSIZE;
1726 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1727 entry->key.vlan.goto_tbl))
1728 return -EMSGSIZE;
1729 if (entry->key.vlan.untagged &&
1730 rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1731 entry->key.vlan.new_vlan_id))
1732 return -EMSGSIZE;
1733
1734 return 0;
1735}
1736
1737static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1738 struct rocker_flow_tbl_entry *entry)
1739{
1740 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1741 entry->key.term_mac.in_lport))
1742 return -EMSGSIZE;
1743 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1744 entry->key.term_mac.in_lport_mask))
1745 return -EMSGSIZE;
1746 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1747 entry->key.term_mac.eth_type))
1748 return -EMSGSIZE;
1749 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1750 ETH_ALEN, entry->key.term_mac.eth_dst))
1751 return -EMSGSIZE;
1752 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1753 ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1754 return -EMSGSIZE;
1755 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1756 entry->key.term_mac.vlan_id))
1757 return -EMSGSIZE;
1758 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1759 entry->key.term_mac.vlan_id_mask))
1760 return -EMSGSIZE;
1761 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1762 entry->key.term_mac.goto_tbl))
1763 return -EMSGSIZE;
1764 if (entry->key.term_mac.copy_to_cpu &&
1765 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1766 entry->key.term_mac.copy_to_cpu))
1767 return -EMSGSIZE;
1768
1769 return 0;
1770}
1771
1772static int
1773rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1774 struct rocker_flow_tbl_entry *entry)
1775{
1776 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1777 entry->key.ucast_routing.eth_type))
1778 return -EMSGSIZE;
1779 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1780 entry->key.ucast_routing.dst4))
1781 return -EMSGSIZE;
1782 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1783 entry->key.ucast_routing.dst4_mask))
1784 return -EMSGSIZE;
1785 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1786 entry->key.ucast_routing.goto_tbl))
1787 return -EMSGSIZE;
1788 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1789 entry->key.ucast_routing.group_id))
1790 return -EMSGSIZE;
1791
1792 return 0;
1793}
1794
1795static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
1796 struct rocker_flow_tbl_entry *entry)
1797{
1798 if (entry->key.bridge.has_eth_dst &&
1799 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1800 ETH_ALEN, entry->key.bridge.eth_dst))
1801 return -EMSGSIZE;
1802 if (entry->key.bridge.has_eth_dst_mask &&
1803 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1804 ETH_ALEN, entry->key.bridge.eth_dst_mask))
1805 return -EMSGSIZE;
1806 if (entry->key.bridge.vlan_id &&
1807 rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1808 entry->key.bridge.vlan_id))
1809 return -EMSGSIZE;
1810 if (entry->key.bridge.tunnel_id &&
1811 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
1812 entry->key.bridge.tunnel_id))
1813 return -EMSGSIZE;
1814 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1815 entry->key.bridge.goto_tbl))
1816 return -EMSGSIZE;
1817 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1818 entry->key.bridge.group_id))
1819 return -EMSGSIZE;
1820 if (entry->key.bridge.copy_to_cpu &&
1821 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1822 entry->key.bridge.copy_to_cpu))
1823 return -EMSGSIZE;
1824
1825 return 0;
1826}
1827
1828static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
1829 struct rocker_flow_tbl_entry *entry)
1830{
1831 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1832 entry->key.acl.in_lport))
1833 return -EMSGSIZE;
1834 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1835 entry->key.acl.in_lport_mask))
1836 return -EMSGSIZE;
1837 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1838 ETH_ALEN, entry->key.acl.eth_src))
1839 return -EMSGSIZE;
1840 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
1841 ETH_ALEN, entry->key.acl.eth_src_mask))
1842 return -EMSGSIZE;
1843 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1844 ETH_ALEN, entry->key.acl.eth_dst))
1845 return -EMSGSIZE;
1846 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1847 ETH_ALEN, entry->key.acl.eth_dst_mask))
1848 return -EMSGSIZE;
1849 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1850 entry->key.acl.eth_type))
1851 return -EMSGSIZE;
1852 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1853 entry->key.acl.vlan_id))
1854 return -EMSGSIZE;
1855 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1856 entry->key.acl.vlan_id_mask))
1857 return -EMSGSIZE;
1858
1859 switch (ntohs(entry->key.acl.eth_type)) {
1860 case ETH_P_IP:
1861 case ETH_P_IPV6:
1862 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
1863 entry->key.acl.ip_proto))
1864 return -EMSGSIZE;
1865 if (rocker_tlv_put_u8(desc_info,
1866 ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
1867 entry->key.acl.ip_proto_mask))
1868 return -EMSGSIZE;
1869 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
1870 entry->key.acl.ip_tos & 0x3f))
1871 return -EMSGSIZE;
1872 if (rocker_tlv_put_u8(desc_info,
1873 ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
1874 entry->key.acl.ip_tos_mask & 0x3f))
1875 return -EMSGSIZE;
1876 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
1877 (entry->key.acl.ip_tos & 0xc0) >> 6))
1878 return -EMSGSIZE;
1879 if (rocker_tlv_put_u8(desc_info,
1880 ROCKER_TLV_OF_DPA_IP_ECN_MASK,
1881 (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
1882 return -EMSGSIZE;
1883 break;
1884 }
1885
1886 if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
1887 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1888 entry->key.acl.group_id))
1889 return -EMSGSIZE;
1890
1891 return 0;
1892}
1893
1894static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
1895 struct rocker_port *rocker_port,
1896 struct rocker_desc_info *desc_info,
1897 void *priv)
1898{
1899 struct rocker_flow_tbl_entry *entry = priv;
1900 struct rocker_tlv *cmd_info;
1901 int err = 0;
1902
1903 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1904 ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD))
1905 return -EMSGSIZE;
1906 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1907 if (!cmd_info)
1908 return -EMSGSIZE;
1909 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
1910 entry->key.tbl_id))
1911 return -EMSGSIZE;
1912 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
1913 entry->key.priority))
1914 return -EMSGSIZE;
1915 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
1916 return -EMSGSIZE;
1917 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1918 entry->cookie))
1919 return -EMSGSIZE;
1920
1921 switch (entry->key.tbl_id) {
1922 case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
1923 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
1924 break;
1925 case ROCKER_OF_DPA_TABLE_ID_VLAN:
1926 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
1927 break;
1928 case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
1929 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
1930 break;
1931 case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
1932 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
1933 break;
1934 case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
1935 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
1936 break;
1937 case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
1938 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
1939 break;
1940 default:
1941 err = -ENOTSUPP;
1942 break;
1943 }
1944
1945 if (err)
1946 return err;
1947
1948 rocker_tlv_nest_end(desc_info, cmd_info);
1949
1950 return 0;
1951}
1952
1953static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
1954 struct rocker_port *rocker_port,
1955 struct rocker_desc_info *desc_info,
1956 void *priv)
1957{
1958 const struct rocker_flow_tbl_entry *entry = priv;
1959 struct rocker_tlv *cmd_info;
1960
1961 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1962 ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL))
1963 return -EMSGSIZE;
1964 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1965 if (!cmd_info)
1966 return -EMSGSIZE;
1967 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1968 entry->cookie))
1969 return -EMSGSIZE;
1970 rocker_tlv_nest_end(desc_info, cmd_info);
1971
1972 return 0;
1973}
1974
1975static int
1976rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
1977 struct rocker_group_tbl_entry *entry)
1978{
1979 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_LPORT,
1980 ROCKER_GROUP_PORT_GET(entry->group_id)))
1981 return -EMSGSIZE;
1982 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
1983 entry->l2_interface.pop_vlan))
1984 return -EMSGSIZE;
1985
1986 return 0;
1987}
1988
1989static int
1990rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
1991 struct rocker_group_tbl_entry *entry)
1992{
1993 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
1994 entry->l2_rewrite.group_id))
1995 return -EMSGSIZE;
1996 if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
1997 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1998 ETH_ALEN, entry->l2_rewrite.eth_src))
1999 return -EMSGSIZE;
2000 if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2001 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2002 ETH_ALEN, entry->l2_rewrite.eth_dst))
2003 return -EMSGSIZE;
2004 if (entry->l2_rewrite.vlan_id &&
2005 rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2006 entry->l2_rewrite.vlan_id))
2007 return -EMSGSIZE;
2008
2009 return 0;
2010}
2011
2012static int
2013rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2014 struct rocker_group_tbl_entry *entry)
2015{
2016 int i;
2017 struct rocker_tlv *group_ids;
2018
2019 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2020 entry->group_count))
2021 return -EMSGSIZE;
2022
2023 group_ids = rocker_tlv_nest_start(desc_info,
2024 ROCKER_TLV_OF_DPA_GROUP_IDS);
2025 if (!group_ids)
2026 return -EMSGSIZE;
2027
2028 for (i = 0; i < entry->group_count; i++)
2029 /* Note TLV array is 1-based */
2030 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2031 return -EMSGSIZE;
2032
2033 rocker_tlv_nest_end(desc_info, group_ids);
2034
2035 return 0;
2036}
2037
2038static int
2039rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2040 struct rocker_group_tbl_entry *entry)
2041{
2042 if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2043 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2044 ETH_ALEN, entry->l3_unicast.eth_src))
2045 return -EMSGSIZE;
2046 if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2047 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2048 ETH_ALEN, entry->l3_unicast.eth_dst))
2049 return -EMSGSIZE;
2050 if (entry->l3_unicast.vlan_id &&
2051 rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2052 entry->l3_unicast.vlan_id))
2053 return -EMSGSIZE;
2054 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2055 entry->l3_unicast.ttl_check))
2056 return -EMSGSIZE;
2057 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2058 entry->l3_unicast.group_id))
2059 return -EMSGSIZE;
2060
2061 return 0;
2062}
2063
2064static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2065 struct rocker_port *rocker_port,
2066 struct rocker_desc_info *desc_info,
2067 void *priv)
2068{
2069 struct rocker_group_tbl_entry *entry = priv;
2070 struct rocker_tlv *cmd_info;
2071 int err = 0;
2072
2073 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2074 return -EMSGSIZE;
2075 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2076 if (!cmd_info)
2077 return -EMSGSIZE;
2078
2079 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2080 entry->group_id))
2081 return -EMSGSIZE;
2082
2083 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2084 case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2085 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2086 break;
2087 case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2088 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2089 break;
2090 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2091 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2092 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2093 break;
2094 case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2095 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2096 break;
2097 default:
2098 err = -ENOTSUPP;
2099 break;
2100 }
2101
2102 if (err)
2103 return err;
2104
2105 rocker_tlv_nest_end(desc_info, cmd_info);
2106
2107 return 0;
2108}
2109
2110static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2111 struct rocker_port *rocker_port,
2112 struct rocker_desc_info *desc_info,
2113 void *priv)
2114{
2115 const struct rocker_group_tbl_entry *entry = priv;
2116 struct rocker_tlv *cmd_info;
2117
2118 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2119 return -EMSGSIZE;
2120 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2121 if (!cmd_info)
2122 return -EMSGSIZE;
2123 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2124 entry->group_id))
2125 return -EMSGSIZE;
2126 rocker_tlv_nest_end(desc_info, cmd_info);
2127
2128 return 0;
2129}
2130
2131/*****************************************
2132 * Flow, group, FDB, internal VLAN tables
2133 *****************************************/
2134
2135static int rocker_init_tbls(struct rocker *rocker)
2136{
2137 hash_init(rocker->flow_tbl);
2138 spin_lock_init(&rocker->flow_tbl_lock);
2139
2140 hash_init(rocker->group_tbl);
2141 spin_lock_init(&rocker->group_tbl_lock);
2142
2143 hash_init(rocker->fdb_tbl);
2144 spin_lock_init(&rocker->fdb_tbl_lock);
2145
2146 hash_init(rocker->internal_vlan_tbl);
2147 spin_lock_init(&rocker->internal_vlan_tbl_lock);
2148
2149 return 0;
2150}
2151
2152static void rocker_free_tbls(struct rocker *rocker)
2153{
2154 unsigned long flags;
2155 struct rocker_flow_tbl_entry *flow_entry;
2156 struct rocker_group_tbl_entry *group_entry;
2157 struct rocker_fdb_tbl_entry *fdb_entry;
2158 struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2159 struct hlist_node *tmp;
2160 int bkt;
2161
2162 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2163 hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2164 hash_del(&flow_entry->entry);
2165 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2166
2167 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2168 hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2169 hash_del(&group_entry->entry);
2170 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2171
2172 spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2173 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2174 hash_del(&fdb_entry->entry);
2175 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2176
2177 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2178 hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2179 tmp, internal_vlan_entry, entry)
2180 hash_del(&internal_vlan_entry->entry);
2181 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2182}
2183
2184static struct rocker_flow_tbl_entry *
2185rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2186{
2187 struct rocker_flow_tbl_entry *found;
2188
2189 hash_for_each_possible(rocker->flow_tbl, found,
2190 entry, match->key_crc32) {
2191 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
2192 return found;
2193 }
2194
2195 return NULL;
2196}
2197
2198static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2199 struct rocker_flow_tbl_entry *match,
2200 bool nowait)
2201{
2202 struct rocker *rocker = rocker_port->rocker;
2203 struct rocker_flow_tbl_entry *found;
2204 unsigned long flags;
2205 bool add_to_hw = false;
2206 int err = 0;
2207
2208 match->key_crc32 = crc32(~0, &match->key, sizeof(match->key));
2209
2210 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2211
2212 found = rocker_flow_tbl_find(rocker, match);
2213
2214 if (found) {
2215 kfree(match);
2216 } else {
2217 found = match;
2218 found->cookie = rocker->flow_tbl_next_cookie++;
2219 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2220 add_to_hw = true;
2221 }
2222
2223 found->ref_count++;
2224
2225 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2226
2227 if (add_to_hw) {
2228 err = rocker_cmd_exec(rocker, rocker_port,
2229 rocker_cmd_flow_tbl_add,
2230 found, NULL, NULL, nowait);
2231 if (err) {
2232 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2233 hash_del(&found->entry);
2234 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2235 kfree(found);
2236 }
2237 }
2238
2239 return err;
2240}
2241
2242static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2243 struct rocker_flow_tbl_entry *match,
2244 bool nowait)
2245{
2246 struct rocker *rocker = rocker_port->rocker;
2247 struct rocker_flow_tbl_entry *found;
2248 unsigned long flags;
2249 bool del_from_hw = false;
2250 int err = 0;
2251
2252 match->key_crc32 = crc32(~0, &match->key, sizeof(match->key));
2253
2254 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2255
2256 found = rocker_flow_tbl_find(rocker, match);
2257
2258 if (found) {
2259 found->ref_count--;
2260 if (found->ref_count == 0) {
2261 hash_del(&found->entry);
2262 del_from_hw = true;
2263 }
2264 }
2265
2266 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2267
2268 kfree(match);
2269
2270 if (del_from_hw) {
2271 err = rocker_cmd_exec(rocker, rocker_port,
2272 rocker_cmd_flow_tbl_del,
2273 found, NULL, NULL, nowait);
2274 kfree(found);
2275 }
2276
2277 return err;
2278}
2279
2280static gfp_t rocker_op_flags_gfp(int flags)
2281{
2282 return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL;
2283}
2284
2285static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2286 int flags, struct rocker_flow_tbl_entry *entry)
2287{
2288 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2289
2290 if (flags & ROCKER_OP_FLAG_REMOVE)
2291 return rocker_flow_tbl_del(rocker_port, entry, nowait);
2292 else
2293 return rocker_flow_tbl_add(rocker_port, entry, nowait);
2294}
2295
2296static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2297 int flags, u32 in_lport, u32 in_lport_mask,
2298 enum rocker_of_dpa_table_id goto_tbl)
2299{
2300 struct rocker_flow_tbl_entry *entry;
2301
2302 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2303 if (!entry)
2304 return -ENOMEM;
2305
2306 entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2307 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2308 entry->key.ig_port.in_lport = in_lport;
2309 entry->key.ig_port.in_lport_mask = in_lport_mask;
2310 entry->key.ig_port.goto_tbl = goto_tbl;
2311
2312 return rocker_flow_tbl_do(rocker_port, flags, entry);
2313}
2314
2315static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2316 int flags, u32 in_lport,
2317 __be16 vlan_id, __be16 vlan_id_mask,
2318 enum rocker_of_dpa_table_id goto_tbl,
2319 bool untagged, __be16 new_vlan_id)
2320{
2321 struct rocker_flow_tbl_entry *entry;
2322
2323 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2324 if (!entry)
2325 return -ENOMEM;
2326
2327 entry->key.priority = ROCKER_PRIORITY_VLAN;
2328 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2329 entry->key.vlan.in_lport = in_lport;
2330 entry->key.vlan.vlan_id = vlan_id;
2331 entry->key.vlan.vlan_id_mask = vlan_id_mask;
2332 entry->key.vlan.goto_tbl = goto_tbl;
2333
2334 entry->key.vlan.untagged = untagged;
2335 entry->key.vlan.new_vlan_id = new_vlan_id;
2336
2337 return rocker_flow_tbl_do(rocker_port, flags, entry);
2338}
2339
2340static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2341 u32 in_lport, u32 in_lport_mask,
2342 __be16 eth_type, const u8 *eth_dst,
2343 const u8 *eth_dst_mask, __be16 vlan_id,
2344 __be16 vlan_id_mask, bool copy_to_cpu,
2345 int flags)
2346{
2347 struct rocker_flow_tbl_entry *entry;
2348
2349 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2350 if (!entry)
2351 return -ENOMEM;
2352
2353 if (is_multicast_ether_addr(eth_dst)) {
2354 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2355 entry->key.term_mac.goto_tbl =
2356 ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2357 } else {
2358 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2359 entry->key.term_mac.goto_tbl =
2360 ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2361 }
2362
2363 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2364 entry->key.term_mac.in_lport = in_lport;
2365 entry->key.term_mac.in_lport_mask = in_lport_mask;
2366 entry->key.term_mac.eth_type = eth_type;
2367 ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2368 ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2369 entry->key.term_mac.vlan_id = vlan_id;
2370 entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2371 entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2372
2373 return rocker_flow_tbl_do(rocker_port, flags, entry);
2374}
2375
2376static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2377 int flags,
2378 const u8 *eth_dst, const u8 *eth_dst_mask,
2379 __be16 vlan_id, u32 tunnel_id,
2380 enum rocker_of_dpa_table_id goto_tbl,
2381 u32 group_id, bool copy_to_cpu)
2382{
2383 struct rocker_flow_tbl_entry *entry;
2384 u32 priority;
2385 bool vlan_bridging = !!vlan_id;
2386 bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2387 bool wild = false;
2388
2389 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2390 if (!entry)
2391 return -ENOMEM;
2392
2393 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2394
2395 if (eth_dst) {
2396 entry->key.bridge.has_eth_dst = 1;
2397 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2398 }
2399 if (eth_dst_mask) {
2400 entry->key.bridge.has_eth_dst_mask = 1;
2401 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2402 if (memcmp(eth_dst_mask, ff_mac, ETH_ALEN))
2403 wild = true;
2404 }
2405
2406 priority = ROCKER_PRIORITY_UNKNOWN;
2407 if (vlan_bridging & dflt & wild)
2408 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2409 else if (vlan_bridging & dflt & !wild)
2410 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2411 else if (vlan_bridging & !dflt)
2412 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2413 else if (!vlan_bridging & dflt & wild)
2414 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2415 else if (!vlan_bridging & dflt & !wild)
2416 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2417 else if (!vlan_bridging & !dflt)
2418 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2419
2420 entry->key.priority = priority;
2421 entry->key.bridge.vlan_id = vlan_id;
2422 entry->key.bridge.tunnel_id = tunnel_id;
2423 entry->key.bridge.goto_tbl = goto_tbl;
2424 entry->key.bridge.group_id = group_id;
2425 entry->key.bridge.copy_to_cpu = copy_to_cpu;
2426
2427 return rocker_flow_tbl_do(rocker_port, flags, entry);
2428}
2429
2430static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2431 int flags, u32 in_lport,
2432 u32 in_lport_mask,
2433 const u8 *eth_src, const u8 *eth_src_mask,
2434 const u8 *eth_dst, const u8 *eth_dst_mask,
2435 __be16 eth_type,
2436 __be16 vlan_id, __be16 vlan_id_mask,
2437 u8 ip_proto, u8 ip_proto_mask,
2438 u8 ip_tos, u8 ip_tos_mask,
2439 u32 group_id)
2440{
2441 u32 priority;
2442 struct rocker_flow_tbl_entry *entry;
2443
2444 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2445 if (!entry)
2446 return -ENOMEM;
2447
2448 priority = ROCKER_PRIORITY_ACL_NORMAL;
2449 if (eth_dst && eth_dst_mask) {
2450 if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0)
2451 priority = ROCKER_PRIORITY_ACL_DFLT;
2452 else if (is_link_local_ether_addr(eth_dst))
2453 priority = ROCKER_PRIORITY_ACL_CTRL;
2454 }
2455
2456 entry->key.priority = priority;
2457 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2458 entry->key.acl.in_lport = in_lport;
2459 entry->key.acl.in_lport_mask = in_lport_mask;
2460
2461 if (eth_src)
2462 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2463 if (eth_src_mask)
2464 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2465 if (eth_dst)
2466 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2467 if (eth_dst_mask)
2468 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2469
2470 entry->key.acl.eth_type = eth_type;
2471 entry->key.acl.vlan_id = vlan_id;
2472 entry->key.acl.vlan_id_mask = vlan_id_mask;
2473 entry->key.acl.ip_proto = ip_proto;
2474 entry->key.acl.ip_proto_mask = ip_proto_mask;
2475 entry->key.acl.ip_tos = ip_tos;
2476 entry->key.acl.ip_tos_mask = ip_tos_mask;
2477 entry->key.acl.group_id = group_id;
2478
2479 return rocker_flow_tbl_do(rocker_port, flags, entry);
2480}
2481
2482static struct rocker_group_tbl_entry *
2483rocker_group_tbl_find(struct rocker *rocker,
2484 struct rocker_group_tbl_entry *match)
2485{
2486 struct rocker_group_tbl_entry *found;
2487
2488 hash_for_each_possible(rocker->group_tbl, found,
2489 entry, match->group_id) {
2490 if (found->group_id == match->group_id)
2491 return found;
2492 }
2493
2494 return NULL;
2495}
2496
2497static void rocker_group_tbl_entry_free(struct rocker_group_tbl_entry *entry)
2498{
2499 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2500 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2501 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2502 kfree(entry->group_ids);
2503 break;
2504 default:
2505 break;
2506 }
2507 kfree(entry);
2508}
2509
2510static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2511 struct rocker_group_tbl_entry *match,
2512 bool nowait)
2513{
2514 struct rocker *rocker = rocker_port->rocker;
2515 struct rocker_group_tbl_entry *found;
2516 unsigned long flags;
2517 int err = 0;
2518
2519 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2520
2521 found = rocker_group_tbl_find(rocker, match);
2522
2523 if (found) {
2524 hash_del(&found->entry);
2525 rocker_group_tbl_entry_free(found);
2526 found = match;
2527 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2528 } else {
2529 found = match;
2530 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2531 }
2532
2533 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2534
2535 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2536
2537 if (found->cmd)
2538 err = rocker_cmd_exec(rocker, rocker_port,
2539 rocker_cmd_group_tbl_add,
2540 found, NULL, NULL, nowait);
2541
2542 return err;
2543}
2544
2545static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2546 struct rocker_group_tbl_entry *match,
2547 bool nowait)
2548{
2549 struct rocker *rocker = rocker_port->rocker;
2550 struct rocker_group_tbl_entry *found;
2551 unsigned long flags;
2552 int err = 0;
2553
2554 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2555
2556 found = rocker_group_tbl_find(rocker, match);
2557
2558 if (found) {
2559 hash_del(&found->entry);
2560 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2561 }
2562
2563 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2564
2565 rocker_group_tbl_entry_free(match);
2566
2567 if (found) {
2568 err = rocker_cmd_exec(rocker, rocker_port,
2569 rocker_cmd_group_tbl_del,
2570 found, NULL, NULL, nowait);
2571 rocker_group_tbl_entry_free(found);
2572 }
2573
2574 return err;
2575}
2576
2577static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2578 int flags, struct rocker_group_tbl_entry *entry)
2579{
2580 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2581
2582 if (flags & ROCKER_OP_FLAG_REMOVE)
2583 return rocker_group_tbl_del(rocker_port, entry, nowait);
2584 else
2585 return rocker_group_tbl_add(rocker_port, entry, nowait);
2586}
2587
2588static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2589 int flags, __be16 vlan_id,
2590 u32 out_lport, int pop_vlan)
2591{
2592 struct rocker_group_tbl_entry *entry;
2593
2594 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2595 if (!entry)
2596 return -ENOMEM;
2597
2598 entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
2599 entry->l2_interface.pop_vlan = pop_vlan;
2600
2601 return rocker_group_tbl_do(rocker_port, flags, entry);
2602}
2603
2604static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2605 int flags, u8 group_count,
2606 u32 *group_ids, u32 group_id)
2607{
2608 struct rocker_group_tbl_entry *entry;
2609
2610 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2611 if (!entry)
2612 return -ENOMEM;
2613
2614 entry->group_id = group_id;
2615 entry->group_count = group_count;
2616
2617 entry->group_ids = kcalloc(group_count, sizeof(u32),
2618 rocker_op_flags_gfp(flags));
2619 if (!entry->group_ids) {
2620 kfree(entry);
2621 return -ENOMEM;
2622 }
2623 memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2624
2625 return rocker_group_tbl_do(rocker_port, flags, entry);
2626}
2627
2628static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2629 int flags, __be16 vlan_id,
2630 u8 group_count, u32 *group_ids,
2631 u32 group_id)
2632{
2633 return rocker_group_l2_fan_out(rocker_port, flags,
2634 group_count, group_ids,
2635 group_id);
2636}
2637
6c707945
SF		 2638static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
2639 int flags, __be16 vlan_id)
2640{
2641 struct rocker_port *p;
2642 struct rocker *rocker = rocker_port->rocker;
2643 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2644 u32 group_ids[rocker->port_count];
2645 u8 group_count = 0;
2646 int err;
2647 int i;
2648
2649 /* Adjust the flood group for this VLAN. The flood group
2650 * references an L2 interface group for each port in this
2651 * VLAN.
2652 */
2653
2654 for (i = 0; i < rocker->port_count; i++) {
2655 p = rocker->ports[i];
2656 if (!rocker_port_is_bridged(p))
2657 continue;
2658 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
2659 group_ids[group_count++] =
2660 ROCKER_GROUP_L2_INTERFACE(vlan_id,
2661 p->lport);
2662 }
2663 }
2664
2665 /* If there are no bridged ports in this VLAN, we're done */
2666 if (group_count == 0)
2667 return 0;
2668
2669 err = rocker_group_l2_flood(rocker_port, flags, vlan_id,
2670 group_count, group_ids,
2671 group_id);
2672 if (err)
2673 netdev_err(rocker_port->dev,
2674 "Error (%d) port VLAN l2 flood group\n", err);
2675
2676 return err;
2677}
2678
2679static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
2680 int flags, __be16 vlan_id,
2681 bool pop_vlan)
2682{
2683 struct rocker *rocker = rocker_port->rocker;
2684 struct rocker_port *p;
2685 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2686 u32 out_lport;
2687 int ref = 0;
2688 int err;
2689 int i;
2690
2691 /* An L2 interface group for this port in this VLAN, but
2692 * only when port STP state is LEARNING|FORWARDING.
2693 */
2694
2695 if (rocker_port->stp_state == BR_STATE_LEARNING ||
2696 rocker_port->stp_state == BR_STATE_FORWARDING) {
2697 out_lport = rocker_port->lport;
2698 err = rocker_group_l2_interface(rocker_port, flags,
2699 vlan_id, out_lport,
2700 pop_vlan);
2701 if (err) {
2702 netdev_err(rocker_port->dev,
2703 "Error (%d) port VLAN l2 group for lport %d\n",
2704 err, out_lport);
2705 return err;
2706 }
2707 }
2708
2709 /* An L2 interface group for this VLAN to CPU port.
2710 * Add when first port joins this VLAN and destroy when
2711 * last port leaves this VLAN.
2712 */
2713
2714 for (i = 0; i < rocker->port_count; i++) {
2715 p = rocker->ports[i];
2716 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
2717 ref++;
2718 }
2719
2720 if ((!adding || ref != 1) && (adding || ref != 0))
2721 return 0;
2722
2723 out_lport = 0;
2724 err = rocker_group_l2_interface(rocker_port, flags,
2725 vlan_id, out_lport,
2726 pop_vlan);
2727 if (err) {
2728 netdev_err(rocker_port->dev,
2729 "Error (%d) port VLAN l2 group for CPU port\n", err);
2730 return err;
2731 }
2732
2733 return 0;
2734}
2735
9f6bbf7c
SF		 2736static struct rocker_ctrl {
2737 const u8 *eth_dst;
2738 const u8 *eth_dst_mask;
2739 u16 eth_type;
2740 bool acl;
2741 bool bridge;
2742 bool term;
2743 bool copy_to_cpu;
2744} rocker_ctrls[] = {
2745 [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
2746 /* pass link local multicast pkts up to CPU for filtering */
2747 .eth_dst = ll_mac,
2748 .eth_dst_mask = ll_mask,
2749 .acl = true,
2750 },
2751 [ROCKER_CTRL_LOCAL_ARP] = {
2752 /* pass local ARP pkts up to CPU */
2753 .eth_dst = zero_mac,
2754 .eth_dst_mask = zero_mac,
2755 .eth_type = htons(ETH_P_ARP),
2756 .acl = true,
2757 },
2758 [ROCKER_CTRL_IPV4_MCAST] = {
2759 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
2760 .eth_dst = ipv4_mcast,
2761 .eth_dst_mask = ipv4_mask,
2762 .eth_type = htons(ETH_P_IP),
2763 .term = true,
2764 .copy_to_cpu = true,
2765 },
2766 [ROCKER_CTRL_IPV6_MCAST] = {
2767 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
2768 .eth_dst = ipv6_mcast,
2769 .eth_dst_mask = ipv6_mask,
2770 .eth_type = htons(ETH_P_IPV6),
2771 .term = true,
2772 .copy_to_cpu = true,
2773 },
2774 [ROCKER_CTRL_DFLT_BRIDGING] = {
2775 /* flood any pkts on vlan */
2776 .bridge = true,
2777 .copy_to_cpu = true,
2778 },
2779};
2780
2781static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
2782 int flags, struct rocker_ctrl *ctrl,
2783 __be16 vlan_id)
2784{
2785 u32 in_lport = rocker_port->lport;
2786 u32 in_lport_mask = 0xffffffff;
2787 u32 out_lport = 0;
2788 u8 *eth_src = NULL;
2789 u8 *eth_src_mask = NULL;
2790 __be16 vlan_id_mask = htons(0xffff);
2791 u8 ip_proto = 0;
2792 u8 ip_proto_mask = 0;
2793 u8 ip_tos = 0;
2794 u8 ip_tos_mask = 0;
2795 u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
2796 int err;
2797
2798 err = rocker_flow_tbl_acl(rocker_port, flags,
2799 in_lport, in_lport_mask,
2800 eth_src, eth_src_mask,
2801 ctrl->eth_dst, ctrl->eth_dst_mask,
2802 ctrl->eth_type,
2803 vlan_id, vlan_id_mask,
2804 ip_proto, ip_proto_mask,
2805 ip_tos, ip_tos_mask,
2806 group_id);
2807
2808 if (err)
2809 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
2810
2811 return err;
2812}
2813
6c707945
SF		 2814static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
2815 int flags, struct rocker_ctrl *ctrl,
2816 __be16 vlan_id)
2817{
2818 enum rocker_of_dpa_table_id goto_tbl =
2819 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2820 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2821 u32 tunnel_id = 0;
2822 int err;
2823
2824 if (!rocker_port_is_bridged(rocker_port))
2825 return 0;
2826
2827 err = rocker_flow_tbl_bridge(rocker_port, flags,
2828 ctrl->eth_dst, ctrl->eth_dst_mask,
2829 vlan_id, tunnel_id,
2830 goto_tbl, group_id, ctrl->copy_to_cpu);
2831
2832 if (err)
2833 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
2834
2835 return err;
2836}
2837
9f6bbf7c
SF		 2838static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
2839 int flags, struct rocker_ctrl *ctrl,
2840 __be16 vlan_id)
2841{
2842 u32 in_lport_mask = 0xffffffff;
2843 __be16 vlan_id_mask = htons(0xffff);
2844 int err;
2845
2846 if (ntohs(vlan_id) == 0)
2847 vlan_id = rocker_port->internal_vlan_id;
2848
2849 err = rocker_flow_tbl_term_mac(rocker_port,
2850 rocker_port->lport, in_lport_mask,
2851 ctrl->eth_type, ctrl->eth_dst,
2852 ctrl->eth_dst_mask, vlan_id,
2853 vlan_id_mask, ctrl->copy_to_cpu,
2854 flags);
2855
2856 if (err)
2857 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
2858
2859 return err;
2860}
2861
2862static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, int flags,
2863 struct rocker_ctrl *ctrl, __be16 vlan_id)
2864{
2865 if (ctrl->acl)
2866 return rocker_port_ctrl_vlan_acl(rocker_port, flags,
2867 ctrl, vlan_id);
6c707945
SF		 2868 if (ctrl->bridge)
2869 return rocker_port_ctrl_vlan_bridge(rocker_port, flags,
2870 ctrl, vlan_id);
9f6bbf7c
SF		 2871
2872 if (ctrl->term)
2873 return rocker_port_ctrl_vlan_term(rocker_port, flags,
2874 ctrl, vlan_id);
2875
2876 return -EOPNOTSUPP;
2877}
2878
2879static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
2880 int flags, __be16 vlan_id)
2881{
2882 int err = 0;
2883 int i;
2884
2885 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
2886 if (rocker_port->ctrls[i]) {
2887 err = rocker_port_ctrl_vlan(rocker_port, flags,
2888 &rocker_ctrls[i], vlan_id);
2889 if (err)
2890 return err;
2891 }
2892 }
2893
2894 return err;
2895}
2896
2897static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags,
2898 struct rocker_ctrl *ctrl)
2899{
2900 u16 vid;
2901 int err = 0;
2902
2903 for (vid = 1; vid < VLAN_N_VID; vid++) {
2904 if (!test_bit(vid, rocker_port->vlan_bitmap))
2905 continue;
2906 err = rocker_port_ctrl_vlan(rocker_port, flags,
2907 ctrl, htons(vid));
2908 if (err)
2909 break;
2910 }
2911
2912 return err;
2913}
2914
6c707945
SF		 2915static int rocker_port_vlan(struct rocker_port *rocker_port, int flags,
2916 u16 vid)
2917{
2918 enum rocker_of_dpa_table_id goto_tbl =
2919 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2920 u32 in_lport = rocker_port->lport;
2921 __be16 vlan_id = htons(vid);
2922 __be16 vlan_id_mask = htons(0xffff);
2923 __be16 internal_vlan_id;
2924 bool untagged;
2925 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2926 int err;
2927
2928 internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
2929
2930 if (adding && test_and_set_bit(ntohs(internal_vlan_id),
2931 rocker_port->vlan_bitmap))
2932 return 0; /* already added */
2933 else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id),
2934 rocker_port->vlan_bitmap))
2935 return 0; /* already removed */
2936
2937 if (adding) {
2938 err = rocker_port_ctrl_vlan_add(rocker_port, flags,
2939 internal_vlan_id);
2940 if (err) {
2941 netdev_err(rocker_port->dev,
2942 "Error (%d) port ctrl vlan add\n", err);
2943 return err;
2944 }
2945 }
2946
2947 err = rocker_port_vlan_l2_groups(rocker_port, flags,
2948 internal_vlan_id, untagged);
2949 if (err) {
2950 netdev_err(rocker_port->dev,
2951 "Error (%d) port VLAN l2 groups\n", err);
2952 return err;
2953 }
2954
2955 err = rocker_port_vlan_flood_group(rocker_port, flags,
2956 internal_vlan_id);
2957 if (err) {
2958 netdev_err(rocker_port->dev,
2959 "Error (%d) port VLAN l2 flood group\n", err);
2960 return err;
2961 }
2962
2963 err = rocker_flow_tbl_vlan(rocker_port, flags,
2964 in_lport, vlan_id, vlan_id_mask,
2965 goto_tbl, untagged, internal_vlan_id);
2966 if (err)
2967 netdev_err(rocker_port->dev,
2968 "Error (%d) port VLAN table\n", err);
2969
2970 return err;
2971}
2972
9f6bbf7c
SF		 2973static int rocker_port_ig_tbl(struct rocker_port *rocker_port, int flags)
2974{
2975 enum rocker_of_dpa_table_id goto_tbl;
2976 u32 in_lport;
2977 u32 in_lport_mask;
2978 int err;
2979
2980 /* Normal Ethernet Frames. Matches pkts from any local physical
2981 * ports. Goto VLAN tbl.
2982 */
2983
2984 in_lport = 0;
2985 in_lport_mask = 0xffff0000;
2986 goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
2987
2988 err = rocker_flow_tbl_ig_port(rocker_port, flags,
2989 in_lport, in_lport_mask,
2990 goto_tbl);
2991 if (err)
2992 netdev_err(rocker_port->dev,
2993 "Error (%d) ingress port table entry\n", err);
2994
2995 return err;
2996}
2997
6c707945
SF		 2998struct rocker_fdb_learn_work {
2999 struct work_struct work;
3000 struct net_device *dev;
3001 int flags;
3002 u8 addr[ETH_ALEN];
3003 u16 vid;
3004};
3005
3006static void rocker_port_fdb_learn_work(struct work_struct *work)
3007{
3008 struct rocker_fdb_learn_work *lw =
3009 container_of(work, struct rocker_fdb_learn_work, work);
3010 bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3011 bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3012
3013 if (learned & removing)
3014 br_fdb_external_learn_del(lw->dev, lw->addr, lw->vid);
3015 else if (learned & !removing)
3016 br_fdb_external_learn_add(lw->dev, lw->addr, lw->vid);
3017
3018 kfree(work);
3019}
3020
3021static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3022 int flags, const u8 *addr, __be16 vlan_id)
3023{
3024 struct rocker_fdb_learn_work *lw;
3025 enum rocker_of_dpa_table_id goto_tbl =
3026 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3027 u32 out_lport = rocker_port->lport;
3028 u32 tunnel_id = 0;
3029 u32 group_id = ROCKER_GROUP_NONE;
5111f80c 3030 bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
6c707945
SF		 3031 bool copy_to_cpu = false;
3032 int err;
3033
3034 if (rocker_port_is_bridged(rocker_port))
3035 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
3036
3037 if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3038 err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL,
3039 vlan_id, tunnel_id, goto_tbl,
3040 group_id, copy_to_cpu);
3041 if (err)
3042 return err;
3043 }
3044
5111f80c
SF		 3045 if (!syncing)
3046 return 0;
3047
6c707945
SF		 3048 if (!rocker_port_is_bridged(rocker_port))
3049 return 0;
3050
3051 lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags));
3052 if (!lw)
3053 return -ENOMEM;
3054
3055 INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3056
3057 lw->dev = rocker_port->dev;
3058 lw->flags = flags;
3059 ether_addr_copy(lw->addr, addr);
3060 lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3061
3062 schedule_work(&lw->work);
3063
3064 return 0;
3065}
3066
3067static struct rocker_fdb_tbl_entry *
3068rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3069{
3070 struct rocker_fdb_tbl_entry *found;
3071
3072 hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3073 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3074 return found;
3075
3076 return NULL;
3077}
3078
3079static int rocker_port_fdb(struct rocker_port *rocker_port,
3080 const unsigned char *addr,
3081 __be16 vlan_id, int flags)
3082{
3083 struct rocker *rocker = rocker_port->rocker;
3084 struct rocker_fdb_tbl_entry *fdb;
3085 struct rocker_fdb_tbl_entry *found;
3086 bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3087 unsigned long lock_flags;
3088
3089 fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags));
3090 if (!fdb)
3091 return -ENOMEM;
3092
3093 fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3094 fdb->key.lport = rocker_port->lport;
3095 ether_addr_copy(fdb->key.addr, addr);
3096 fdb->key.vlan_id = vlan_id;
3097 fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3098
3099 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3100
3101 found = rocker_fdb_tbl_find(rocker, fdb);
3102
3103 if (removing && found) {
3104 kfree(fdb);
3105 hash_del(&found->entry);
3106 } else if (!removing && !found) {
3107 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3108 }
3109
3110 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3111
3112 /* Check if adding and already exists, or removing and can't find */
3113 if (!found != !removing) {
3114 kfree(fdb);
3115 if (!found && removing)
3116 return 0;
3117 /* Refreshing existing to update aging timers */
3118 flags |= ROCKER_OP_FLAG_REFRESH;
3119 }
3120
3121 return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id);
3122}
3123
3124static int rocker_port_fdb_flush(struct rocker_port *rocker_port)
3125{
3126 struct rocker *rocker = rocker_port->rocker;
3127 struct rocker_fdb_tbl_entry *found;
3128 unsigned long lock_flags;
3129 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3130 struct hlist_node *tmp;
3131 int bkt;
3132 int err = 0;
3133
3134 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3135 rocker_port->stp_state == BR_STATE_FORWARDING)
3136 return 0;
3137
3138 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3139
3140 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3141 if (found->key.lport != rocker_port->lport)
3142 continue;
3143 if (!found->learned)
3144 continue;
3145 err = rocker_port_fdb_learn(rocker_port, flags,
3146 found->key.addr,
3147 found->key.vlan_id);
3148 if (err)
3149 goto err_out;
3150 hash_del(&found->entry);
3151 }
3152
3153err_out:
3154 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3155
3156 return err;
3157}
3158
9f6bbf7c
SF		 3159static int rocker_port_router_mac(struct rocker_port *rocker_port,
3160 int flags, __be16 vlan_id)
3161{
3162 u32 in_lport_mask = 0xffffffff;
3163 __be16 eth_type;
3164 const u8 *dst_mac_mask = ff_mac;
3165 __be16 vlan_id_mask = htons(0xffff);
3166 bool copy_to_cpu = false;
3167 int err;
3168
3169 if (ntohs(vlan_id) == 0)
3170 vlan_id = rocker_port->internal_vlan_id;
3171
3172 eth_type = htons(ETH_P_IP);
3173 err = rocker_flow_tbl_term_mac(rocker_port,
3174 rocker_port->lport, in_lport_mask,
3175 eth_type, rocker_port->dev->dev_addr,
3176 dst_mac_mask, vlan_id, vlan_id_mask,
3177 copy_to_cpu, flags);
3178 if (err)
3179 return err;
3180
3181 eth_type = htons(ETH_P_IPV6);
3182 err = rocker_flow_tbl_term_mac(rocker_port,
3183 rocker_port->lport, in_lport_mask,
3184 eth_type, rocker_port->dev->dev_addr,
3185 dst_mac_mask, vlan_id, vlan_id_mask,
3186 copy_to_cpu, flags);
3187
3188 return err;
3189}
3190
6c707945
SF		 3191static int rocker_port_fwding(struct rocker_port *rocker_port)
3192{
3193 bool pop_vlan;
3194 u32 out_lport;
3195 __be16 vlan_id;
3196 u16 vid;
3197 int flags = ROCKER_OP_FLAG_NOWAIT;
3198 int err;
3199
3200 /* Port will be forwarding-enabled if its STP state is LEARNING
3201 * or FORWARDING. Traffic from CPU can still egress, regardless of
3202 * port STP state. Use L2 interface group on port VLANs as a way
3203 * to toggle port forwarding: if forwarding is disabled, L2
3204 * interface group will not exist.
3205 */
3206
3207 if (rocker_port->stp_state != BR_STATE_LEARNING &&
3208 rocker_port->stp_state != BR_STATE_FORWARDING)
3209 flags |= ROCKER_OP_FLAG_REMOVE;
3210
3211 out_lport = rocker_port->lport;
3212 for (vid = 1; vid < VLAN_N_VID; vid++) {
3213 if (!test_bit(vid, rocker_port->vlan_bitmap))
3214 continue;
3215 vlan_id = htons(vid);
3216 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3217 err = rocker_group_l2_interface(rocker_port, flags,
3218 vlan_id, out_lport,
3219 pop_vlan);
3220 if (err) {
3221 netdev_err(rocker_port->dev,
3222 "Error (%d) port VLAN l2 group for lport %d\n",
3223 err, out_lport);
3224 return err;
3225 }
3226 }
3227
3228 return 0;
3229}
3230
3231static int rocker_port_stp_update(struct rocker_port *rocker_port, u8 state)
3232{
3233 bool want[ROCKER_CTRL_MAX] = { 0, };
3234 int flags;
3235 int err;
3236 int i;
3237
3238 if (rocker_port->stp_state == state)
3239 return 0;
3240
3241 rocker_port->stp_state = state;
3242
3243 switch (state) {
3244 case BR_STATE_DISABLED:
3245 /* port is completely disabled */
3246 break;
3247 case BR_STATE_LISTENING:
3248 case BR_STATE_BLOCKING:
3249 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3250 break;
3251 case BR_STATE_LEARNING:
3252 case BR_STATE_FORWARDING:
3253 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3254 want[ROCKER_CTRL_IPV4_MCAST] = true;
3255 want[ROCKER_CTRL_IPV6_MCAST] = true;
3256 if (rocker_port_is_bridged(rocker_port))
3257 want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3258 else
3259 want[ROCKER_CTRL_LOCAL_ARP] = true;
3260 break;
3261 }
3262
3263 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3264 if (want[i] != rocker_port->ctrls[i]) {
3265 flags = ROCKER_OP_FLAG_NOWAIT |
3266 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3267 err = rocker_port_ctrl(rocker_port, flags,
3268 &rocker_ctrls[i]);
3269 if (err)
3270 return err;
3271 rocker_port->ctrls[i] = want[i];
3272 }
3273 }
3274
3275 err = rocker_port_fdb_flush(rocker_port);
3276 if (err)
3277 return err;
3278
3279 return rocker_port_fwding(rocker_port);
3280}
3281
9f6bbf7c
SF		 3282static struct rocker_internal_vlan_tbl_entry *
3283rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3284{
3285 struct rocker_internal_vlan_tbl_entry *found;
3286
3287 hash_for_each_possible(rocker->internal_vlan_tbl, found,
3288 entry, ifindex) {
3289 if (found->ifindex == ifindex)
3290 return found;
3291 }
3292
3293 return NULL;
3294}
3295
3296static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3297 int ifindex)
3298{
3299 struct rocker *rocker = rocker_port->rocker;
3300 struct rocker_internal_vlan_tbl_entry *entry;
3301 struct rocker_internal_vlan_tbl_entry *found;
3302 unsigned long lock_flags;
3303 int i;
3304
3305 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3306 if (!entry)
3307 return 0;
3308
3309 entry->ifindex = ifindex;
3310
3311 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3312
3313 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3314 if (found) {
3315 kfree(entry);
3316 goto found;
3317 }
3318
3319 found = entry;
3320 hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3321
3322 for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3323 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3324 continue;
3325 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3326 goto found;
3327 }
3328
3329 netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3330
3331found:
3332 found->ref_count++;
3333 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3334
3335 return found->vlan_id;
3336}
3337
3338static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3339 int ifindex)
3340{
3341 struct rocker *rocker = rocker_port->rocker;
3342 struct rocker_internal_vlan_tbl_entry *found;
3343 unsigned long lock_flags;
3344 unsigned long bit;
3345
3346 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3347
3348 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3349 if (!found) {
3350 netdev_err(rocker_port->dev,
3351 "ifindex (%d) not found in internal VLAN tbl\n",
3352 ifindex);
3353 goto not_found;
3354 }
3355
3356 if (--found->ref_count <= 0) {
3357 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3358 clear_bit(bit, rocker->internal_vlan_bitmap);
3359 hash_del(&found->entry);
3360 kfree(found);
3361 }
3362
3363not_found:
3364 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3365}
3366
4b8ac966
JP		 3367/*****************
3368 * Net device ops
3369 *****************/
3370
3371static int rocker_port_open(struct net_device *dev)
3372{
3373 struct rocker_port *rocker_port = netdev_priv(dev);
6c707945
SF		 3374 u8 stp_state = rocker_port_is_bridged(rocker_port) ?
3375 BR_STATE_BLOCKING : BR_STATE_FORWARDING;
4b8ac966
JP		 3376 int err;
3377
3378 err = rocker_port_dma_rings_init(rocker_port);
3379 if (err)
3380 return err;
3381
3382 err = request_irq(rocker_msix_tx_vector(rocker_port),
3383 rocker_tx_irq_handler, 0,
3384 rocker_driver_name, rocker_port);
3385 if (err) {
3386 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3387 goto err_request_tx_irq;
3388 }
3389
3390 err = request_irq(rocker_msix_rx_vector(rocker_port),
3391 rocker_rx_irq_handler, 0,
3392 rocker_driver_name, rocker_port);
3393 if (err) {
3394 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3395 goto err_request_rx_irq;
3396 }
3397
6c707945
SF		 3398 err = rocker_port_stp_update(rocker_port, stp_state);
3399 if (err)
3400 goto err_stp_update;
3401
4b8ac966
JP		 3402 napi_enable(&rocker_port->napi_tx);
3403 napi_enable(&rocker_port->napi_rx);
3404 rocker_port_set_enable(rocker_port, true);
3405 netif_start_queue(dev);
3406 return 0;
3407
6c707945
SF		 3408err_stp_update:
3409 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4b8ac966
JP		 3410err_request_rx_irq:
3411 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3412err_request_tx_irq:
3413 rocker_port_dma_rings_fini(rocker_port);
3414 return err;
3415}
3416
3417static int rocker_port_stop(struct net_device *dev)
3418{
3419 struct rocker_port *rocker_port = netdev_priv(dev);
3420
3421 netif_stop_queue(dev);
3422 rocker_port_set_enable(rocker_port, false);
3423 napi_disable(&rocker_port->napi_rx);
3424 napi_disable(&rocker_port->napi_tx);
6c707945 3425 rocker_port_stp_update(rocker_port, BR_STATE_DISABLED);
4b8ac966
JP		 3426 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3427 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3428 rocker_port_dma_rings_fini(rocker_port);
3429
3430 return 0;
3431}
3432
3433static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
3434 struct rocker_desc_info *desc_info)
3435{
3436 struct rocker *rocker = rocker_port->rocker;
3437 struct pci_dev *pdev = rocker->pdev;
3438 struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
3439 struct rocker_tlv *attr;
3440 int rem;
3441
3442 rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
3443 if (!attrs[ROCKER_TLV_TX_FRAGS])
3444 return;
3445 rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
3446 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
3447 dma_addr_t dma_handle;
3448 size_t len;
3449
3450 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
3451 continue;
3452 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
3453 attr);
3454 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
3455 !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
3456 continue;
3457 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
3458 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
3459 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
3460 }
3461}
3462
3463static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
3464 struct rocker_desc_info *desc_info,
3465 char *buf, size_t buf_len)
3466{
3467 struct rocker *rocker = rocker_port->rocker;
3468 struct pci_dev *pdev = rocker->pdev;
3469 dma_addr_t dma_handle;
3470 struct rocker_tlv *frag;
3471
3472 dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
3473 if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
3474 if (net_ratelimit())
3475 netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
3476 return -EIO;
3477 }
3478 frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
3479 if (!frag)
3480 goto unmap_frag;
3481 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
3482 dma_handle))
3483 goto nest_cancel;
3484 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
3485 buf_len))
3486 goto nest_cancel;
3487 rocker_tlv_nest_end(desc_info, frag);
3488 return 0;
3489
3490nest_cancel:
3491 rocker_tlv_nest_cancel(desc_info, frag);
3492unmap_frag:
3493 pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
3494 return -EMSGSIZE;
3495}
3496
3497static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
3498{
3499 struct rocker_port *rocker_port = netdev_priv(dev);
3500 struct rocker *rocker = rocker_port->rocker;
3501 struct rocker_desc_info *desc_info;
3502 struct rocker_tlv *frags;
3503 int i;
3504 int err;
3505
3506 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3507 if (unlikely(!desc_info)) {
3508 if (net_ratelimit())
3509 netdev_err(dev, "tx ring full when queue awake\n");
3510 return NETDEV_TX_BUSY;
3511 }
3512
3513 rocker_desc_cookie_ptr_set(desc_info, skb);
3514
3515 frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
3516 if (!frags)
3517 goto out;
3518 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3519 skb->data, skb_headlen(skb));
3520 if (err)
3521 goto nest_cancel;
3522 if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
3523 goto nest_cancel;
3524
3525 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3526 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3527
3528 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3529 skb_frag_address(frag),
3530 skb_frag_size(frag));
3531 if (err)
3532 goto unmap_frags;
3533 }
3534 rocker_tlv_nest_end(desc_info, frags);
3535
3536 rocker_desc_gen_clear(desc_info);
3537 rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
3538
3539 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3540 if (!desc_info)
3541 netif_stop_queue(dev);
3542
3543 return NETDEV_TX_OK;
3544
3545unmap_frags:
3546 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3547nest_cancel:
3548 rocker_tlv_nest_cancel(desc_info, frags);
3549out:
3550 dev_kfree_skb(skb);
3551 return NETDEV_TX_OK;
3552}
3553
3554static int rocker_port_set_mac_address(struct net_device *dev, void *p)
3555{
3556 struct sockaddr *addr = p;
3557 struct rocker_port *rocker_port = netdev_priv(dev);
3558 int err;
3559
3560 if (!is_valid_ether_addr(addr->sa_data))
3561 return -EADDRNOTAVAIL;
3562
3563 err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
3564 if (err)
3565 return err;
3566 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3567 return 0;
3568}
3569
6c707945
SF		 3570static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
3571 __be16 proto, u16 vid)
3572{
3573 struct rocker_port *rocker_port = netdev_priv(dev);
3574 int err;
3575
3576 err = rocker_port_vlan(rocker_port, 0, vid);
3577 if (err)
3578 return err;
3579
3580 return rocker_port_router_mac(rocker_port, 0, htons(vid));
3581}
3582
3583static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
3584 __be16 proto, u16 vid)
3585{
3586 struct rocker_port *rocker_port = netdev_priv(dev);
3587 int err;
3588
3589 err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE,
3590 htons(vid));
3591 if (err)
3592 return err;
3593
3594 return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid);
3595}
3596
3597static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
3598 struct net_device *dev,
3599 const unsigned char *addr, u16 vid,
3600 u16 nlm_flags)
3601{
3602 struct rocker_port *rocker_port = netdev_priv(dev);
3603 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3604 int flags = 0;
3605
3606 if (!rocker_port_is_bridged(rocker_port))
3607 return -EINVAL;
3608
3609 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3610}
3611
3612static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
3613 struct net_device *dev,
3614 const unsigned char *addr, u16 vid)
3615{
3616 struct rocker_port *rocker_port = netdev_priv(dev);
3617 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3618 int flags = ROCKER_OP_FLAG_REMOVE;
3619
3620 if (!rocker_port_is_bridged(rocker_port))
3621 return -EINVAL;
3622
3623 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3624}
3625
ce76ca68
JP		 3626static int rocker_fdb_fill_info(struct sk_buff *skb,
3627 struct rocker_port *rocker_port,
3628 const unsigned char *addr, u16 vid,
3629 u32 portid, u32 seq, int type,
3630 unsigned int flags)
3631{
3632 struct nlmsghdr *nlh;
3633 struct ndmsg *ndm;
3634
3635 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
3636 if (!nlh)
3637 return -EMSGSIZE;
3638
3639 ndm = nlmsg_data(nlh);
3640 ndm->ndm_family = AF_BRIDGE;
3641 ndm->ndm_pad1 = 0;
3642 ndm->ndm_pad2 = 0;
3643 ndm->ndm_flags = NTF_SELF;
3644 ndm->ndm_type = 0;
3645 ndm->ndm_ifindex = rocker_port->dev->ifindex;
3646 ndm->ndm_state = NUD_REACHABLE;
3647
3648 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
3649 goto nla_put_failure;
3650
3651 if (vid && nla_put_u16(skb, NDA_VLAN, vid))
3652 goto nla_put_failure;
3653
3654 return nlmsg_end(skb, nlh);
3655
3656nla_put_failure:
3657 nlmsg_cancel(skb, nlh);
3658 return -EMSGSIZE;
3659}
3660
3661static int rocker_port_fdb_dump(struct sk_buff *skb,
3662 struct netlink_callback *cb,
3663 struct net_device *dev,
3664 struct net_device *filter_dev,
3665 int idx)
3666{
3667 struct rocker_port *rocker_port = netdev_priv(dev);
3668 struct rocker *rocker = rocker_port->rocker;
3669 struct rocker_fdb_tbl_entry *found;
3670 struct hlist_node *tmp;
3671 int bkt;
3672 unsigned long lock_flags;
3673 const unsigned char *addr;
3674 u16 vid;
3675 int err;
3676
3677 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3678 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3679 if (found->key.lport != rocker_port->lport)
3680 continue;
3681 if (idx < cb->args[0])
3682 goto skip;
3683 addr = found->key.addr;
3684 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
3685 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
3686 NETLINK_CB(cb->skb).portid,
3687 cb->nlh->nlmsg_seq,
3688 RTM_NEWNEIGH, NLM_F_MULTI);
3689 if (err < 0)
3690 break;
3691skip:
3692 ++idx;
3693 }
3694 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3695 return idx;
3696}
3697
5111f80c
SF		 3698static int rocker_port_bridge_setlink(struct net_device *dev,
3699 struct nlmsghdr *nlh)
3700{
3701 struct rocker_port *rocker_port = netdev_priv(dev);
3702 struct nlattr *protinfo;
3703 struct nlattr *afspec;
3704 struct nlattr *attr;
3705 u16 mode;
3706 int err;
3707
3708 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
3709 IFLA_PROTINFO);
3710 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
3711
3712 if (afspec) {
3713 attr = nla_find_nested(afspec, IFLA_BRIDGE_MODE);
3714 if (attr) {
3715 mode = nla_get_u16(attr);
3716 if (mode != BRIDGE_MODE_SWDEV)
3717 return -EINVAL;
3718 }
3719 }
3720
3721 if (protinfo) {
3722 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING);
3723 if (attr) {
3724 if (nla_get_u8(attr))
3725 rocker_port->brport_flags |= BR_LEARNING;
3726 else
3727 rocker_port->brport_flags &= ~BR_LEARNING;
3728 err = rocker_port_set_learning(rocker_port);
3729 if (err)
3730 return err;
3731 }
3732 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC);
3733 if (attr) {
3734 if (nla_get_u8(attr))
3735 rocker_port->brport_flags |= BR_LEARNING_SYNC;
3736 else
3737 rocker_port->brport_flags &= ~BR_LEARNING_SYNC;
3738 }
3739 }
3740
3741 return 0;
3742}
3743
3744static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
3745 struct net_device *dev,
3746 u32 filter_mask)
3747{
3748 struct rocker_port *rocker_port = netdev_priv(dev);
3749 u16 mode = BRIDGE_MODE_SWDEV;
3750 u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
3751
3752 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
3753 rocker_port->brport_flags, mask);
3754}
3755
4b8ac966
JP		 3756static int rocker_port_switch_parent_id_get(struct net_device *dev,
3757 struct netdev_phys_item_id *psid)
3758{
3759 struct rocker_port *rocker_port = netdev_priv(dev);
3760 struct rocker *rocker = rocker_port->rocker;
3761
3762 psid->id_len = sizeof(rocker->hw.id);
3763 memcpy(&psid->id, &rocker->hw.id, psid->id_len);
3764 return 0;
3765}
3766
6c707945
SF		 3767static int rocker_port_switch_port_stp_update(struct net_device *dev, u8 state)
3768{
3769 struct rocker_port *rocker_port = netdev_priv(dev);
3770
3771 return rocker_port_stp_update(rocker_port, state);
3772}
3773
4b8ac966
JP		 3774static const struct net_device_ops rocker_port_netdev_ops = {
3775 .ndo_open = rocker_port_open,
3776 .ndo_stop = rocker_port_stop,
3777 .ndo_start_xmit = rocker_port_xmit,
3778 .ndo_set_mac_address = rocker_port_set_mac_address,
6c707945
SF		 3779 .ndo_vlan_rx_add_vid = rocker_port_vlan_rx_add_vid,
3780 .ndo_vlan_rx_kill_vid = rocker_port_vlan_rx_kill_vid,
3781 .ndo_fdb_add = rocker_port_fdb_add,
3782 .ndo_fdb_del = rocker_port_fdb_del,
ce76ca68 3783 .ndo_fdb_dump = rocker_port_fdb_dump,
5111f80c
SF		 3784 .ndo_bridge_setlink = rocker_port_bridge_setlink,
3785 .ndo_bridge_getlink = rocker_port_bridge_getlink,
4b8ac966 3786 .ndo_switch_parent_id_get = rocker_port_switch_parent_id_get,
6c707945 3787 .ndo_switch_port_stp_update = rocker_port_switch_port_stp_update,
4b8ac966
JP		 3788};
3789
3790/********************
3791 * ethtool interface
3792 ********************/
3793
3794static int rocker_port_get_settings(struct net_device *dev,
3795 struct ethtool_cmd *ecmd)
3796{
3797 struct rocker_port *rocker_port = netdev_priv(dev);
3798
3799 return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
3800}
3801
3802static int rocker_port_set_settings(struct net_device *dev,
3803 struct ethtool_cmd *ecmd)
3804{
3805 struct rocker_port *rocker_port = netdev_priv(dev);
3806
3807 return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
3808}
3809
3810static void rocker_port_get_drvinfo(struct net_device *dev,
3811 struct ethtool_drvinfo *drvinfo)
3812{
3813 strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
3814 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
3815}
3816
3817static const struct ethtool_ops rocker_port_ethtool_ops = {
3818 .get_settings = rocker_port_get_settings,
3819 .set_settings = rocker_port_set_settings,
3820 .get_drvinfo = rocker_port_get_drvinfo,
3821 .get_link = ethtool_op_get_link,
3822};
3823
3824/*****************
3825 * NAPI interface
3826 *****************/
3827
3828static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
3829{
3830 return container_of(napi, struct rocker_port, napi_tx);
3831}
3832
3833static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
3834{
3835 struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
3836 struct rocker *rocker = rocker_port->rocker;
3837 struct rocker_desc_info *desc_info;
3838 u32 credits = 0;
3839 int err;
3840
3841 /* Cleanup tx descriptors */
3842 while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
3843 err = rocker_desc_err(desc_info);
3844 if (err && net_ratelimit())
3845 netdev_err(rocker_port->dev, "tx desc received with err %d\n",
3846 err);
3847 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3848 dev_kfree_skb_any(rocker_desc_cookie_ptr_get(desc_info));
3849 credits++;
3850 }
3851
3852 if (credits && netif_queue_stopped(rocker_port->dev))
3853 netif_wake_queue(rocker_port->dev);
3854
3855 napi_complete(napi);
3856 rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
3857
3858 return 0;
3859}
3860
3861static int rocker_port_rx_proc(struct rocker *rocker,
3862 struct rocker_port *rocker_port,
3863 struct rocker_desc_info *desc_info)
3864{
3865 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
3866 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
3867 size_t rx_len;
3868
3869 if (!skb)
3870 return -ENOENT;
3871
3872 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
3873 if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
3874 return -EINVAL;
3875
3876 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
3877
3878 rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
3879 skb_put(skb, rx_len);
3880 skb->protocol = eth_type_trans(skb, rocker_port->dev);
3881 netif_receive_skb(skb);
3882
3883 return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
3884}
3885
3886static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
3887{
3888 return container_of(napi, struct rocker_port, napi_rx);
3889}
3890
3891static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
3892{
3893 struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
3894 struct rocker *rocker = rocker_port->rocker;
3895 struct rocker_desc_info *desc_info;
3896 u32 credits = 0;
3897 int err;
3898
3899 /* Process rx descriptors */
3900 while (credits < budget &&
3901 (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
3902 err = rocker_desc_err(desc_info);
3903 if (err) {
3904 if (net_ratelimit())
3905 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
3906 err);
3907 } else {
3908 err = rocker_port_rx_proc(rocker, rocker_port,
3909 desc_info);
3910 if (err && net_ratelimit())
3911 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
3912 err);
3913 }
3914 rocker_desc_gen_clear(desc_info);
3915 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
3916 credits++;
3917 }
3918
3919 if (credits < budget)
3920 napi_complete(napi);
3921
3922 rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
3923
3924 return credits;
3925}
3926
3927/*****************
3928 * PCI driver ops
3929 *****************/
3930
3931static void rocker_carrier_init(struct rocker_port *rocker_port)
3932{
3933 struct rocker *rocker = rocker_port->rocker;
3934 u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
3935 bool link_up;
3936
3937 link_up = link_status & (1 << rocker_port->lport);
3938 if (link_up)
3939 netif_carrier_on(rocker_port->dev);
3940 else
3941 netif_carrier_off(rocker_port->dev);
3942}
3943
3944static void rocker_remove_ports(struct rocker *rocker)
3945{
9f6bbf7c 3946 struct rocker_port *rocker_port;
4b8ac966
JP		 3947 int i;
3948
9f6bbf7c
SF		 3949 for (i = 0; i < rocker->port_count; i++) {
3950 rocker_port = rocker->ports[i];
3951 rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE);
3952 unregister_netdev(rocker_port->dev);
3953 }
4b8ac966
JP		 3954 kfree(rocker->ports);
3955}
3956
3957static void rocker_port_dev_addr_init(struct rocker *rocker,
3958 struct rocker_port *rocker_port)
3959{
3960 struct pci_dev *pdev = rocker->pdev;
3961 int err;
3962
3963 err = rocker_cmd_get_port_settings_macaddr(rocker_port,
3964 rocker_port->dev->dev_addr);
3965 if (err) {
3966 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
3967 eth_hw_addr_random(rocker_port->dev);
3968 }
3969}
3970
3971static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
3972{
3973 struct pci_dev *pdev = rocker->pdev;
3974 struct rocker_port *rocker_port;
3975 struct net_device *dev;
3976 int err;
3977
3978 dev = alloc_etherdev(sizeof(struct rocker_port));
3979 if (!dev)
3980 return -ENOMEM;
3981 rocker_port = netdev_priv(dev);
3982 rocker_port->dev = dev;
3983 rocker_port->rocker = rocker;
3984 rocker_port->port_number = port_number;
3985 rocker_port->lport = port_number + 1;
5111f80c 3986 rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4b8ac966
JP		 3987
3988 rocker_port_dev_addr_init(rocker, rocker_port);
3989 dev->netdev_ops = &rocker_port_netdev_ops;
3990 dev->ethtool_ops = &rocker_port_ethtool_ops;
3991 netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
3992 NAPI_POLL_WEIGHT);
3993 netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
3994 NAPI_POLL_WEIGHT);
3995 rocker_carrier_init(rocker_port);
3996
3997 dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
3998
3999 err = register_netdev(dev);
4000 if (err) {
4001 dev_err(&pdev->dev, "register_netdev failed\n");
4002 goto err_register_netdev;
4003 }
4004 rocker->ports[port_number] = rocker_port;
4005
5111f80c
SF		 4006 rocker_port_set_learning(rocker_port);
4007
9f6bbf7c
SF		 4008 rocker_port->internal_vlan_id =
4009 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4010 err = rocker_port_ig_tbl(rocker_port, 0);
4011 if (err) {
4012 dev_err(&pdev->dev, "install ig port table failed\n");
4013 goto err_port_ig_tbl;
4014 }
4015
4b8ac966
JP		 4016 return 0;
4017
9f6bbf7c
SF		 4018err_port_ig_tbl:
4019 unregister_netdev(dev);
4b8ac966
JP		 4020err_register_netdev:
4021 free_netdev(dev);
4022 return err;
4023}
4024
4025static int rocker_probe_ports(struct rocker *rocker)
4026{
4027 int i;
4028 size_t alloc_size;
4029 int err;
4030
4031 alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4032 rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
4033 for (i = 0; i < rocker->port_count; i++) {
4034 err = rocker_probe_port(rocker, i);
4035 if (err)
4036 goto remove_ports;
4037 }
4038 return 0;
4039
4040remove_ports:
4041 rocker_remove_ports(rocker);
4042 return err;
4043}
4044
4045static int rocker_msix_init(struct rocker *rocker)
4046{
4047 struct pci_dev *pdev = rocker->pdev;
4048 int msix_entries;
4049 int i;
4050 int err;
4051
4052 msix_entries = pci_msix_vec_count(pdev);
4053 if (msix_entries < 0)
4054 return msix_entries;
4055
4056 if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4057 return -EINVAL;
4058
4059 rocker->msix_entries = kmalloc_array(msix_entries,
4060 sizeof(struct msix_entry),
4061 GFP_KERNEL);
4062 if (!rocker->msix_entries)
4063 return -ENOMEM;
4064
4065 for (i = 0; i < msix_entries; i++)
4066 rocker->msix_entries[i].entry = i;
4067
4068 err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4069 if (err < 0)
4070 goto err_enable_msix;
4071
4072 return 0;
4073
4074err_enable_msix:
4075 kfree(rocker->msix_entries);
4076 return err;
4077}
4078
4079static void rocker_msix_fini(struct rocker *rocker)
4080{
4081 pci_disable_msix(rocker->pdev);
4082 kfree(rocker->msix_entries);
4083}
4084
4085static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4086{
4087 struct rocker *rocker;
4088 int err;
4089
4090 rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4091 if (!rocker)
4092 return -ENOMEM;
4093
4094 err = pci_enable_device(pdev);
4095 if (err) {
4096 dev_err(&pdev->dev, "pci_enable_device failed\n");
4097 goto err_pci_enable_device;
4098 }
4099
4100 err = pci_request_regions(pdev, rocker_driver_name);
4101 if (err) {
4102 dev_err(&pdev->dev, "pci_request_regions failed\n");
4103 goto err_pci_request_regions;
4104 }
4105
4106 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4107 if (!err) {
4108 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4109 if (err) {
4110 dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4111 goto err_pci_set_dma_mask;
4112 }
4113 } else {
4114 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4115 if (err) {
4116 dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
4117 goto err_pci_set_dma_mask;
4118 }
4119 }
4120
4121 if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
4122 dev_err(&pdev->dev, "invalid PCI region size\n");
4123 goto err_pci_resource_len_check;
4124 }
4125
4126 rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
4127 pci_resource_len(pdev, 0));
4128 if (!rocker->hw_addr) {
4129 dev_err(&pdev->dev, "ioremap failed\n");
4130 err = -EIO;
4131 goto err_ioremap;
4132 }
4133 pci_set_master(pdev);
4134
4135 rocker->pdev = pdev;
4136 pci_set_drvdata(pdev, rocker);
4137
4138 rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
4139
4140 err = rocker_msix_init(rocker);
4141 if (err) {
4142 dev_err(&pdev->dev, "MSI-X init failed\n");
4143 goto err_msix_init;
4144 }
4145
4146 err = rocker_basic_hw_test(rocker);
4147 if (err) {
4148 dev_err(&pdev->dev, "basic hw test failed\n");
4149 goto err_basic_hw_test;
4150 }
4151
4152 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4153
4154 err = rocker_dma_rings_init(rocker);
4155 if (err)
4156 goto err_dma_rings_init;
4157
4158 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
4159 rocker_cmd_irq_handler, 0,
4160 rocker_driver_name, rocker);
4161 if (err) {
4162 dev_err(&pdev->dev, "cannot assign cmd irq\n");
4163 goto err_request_cmd_irq;
4164 }
4165
4166 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
4167 rocker_event_irq_handler, 0,
4168 rocker_driver_name, rocker);
4169 if (err) {
4170 dev_err(&pdev->dev, "cannot assign event irq\n");
4171 goto err_request_event_irq;
4172 }
4173
4174 rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
4175
9f6bbf7c
SF		 4176 err = rocker_init_tbls(rocker);
4177 if (err) {
4178 dev_err(&pdev->dev, "cannot init rocker tables\n");
4179 goto err_init_tbls;
4180 }
4181
4b8ac966
JP		 4182 err = rocker_probe_ports(rocker);
4183 if (err) {
4184 dev_err(&pdev->dev, "failed to probe ports\n");
4185 goto err_probe_ports;
4186 }
4187
4188 dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
4189
4190 return 0;
4191
4192err_probe_ports:
9f6bbf7c
SF		 4193 rocker_free_tbls(rocker);
4194err_init_tbls:
4b8ac966
JP		 4195 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4196err_request_event_irq:
4197 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4198err_request_cmd_irq:
4199 rocker_dma_rings_fini(rocker);
4200err_dma_rings_init:
4201err_basic_hw_test:
4202 rocker_msix_fini(rocker);
4203err_msix_init:
4204 iounmap(rocker->hw_addr);
4205err_ioremap:
4206err_pci_resource_len_check:
4207err_pci_set_dma_mask:
4208 pci_release_regions(pdev);
4209err_pci_request_regions:
4210 pci_disable_device(pdev);
4211err_pci_enable_device:
4212 kfree(rocker);
4213 return err;
4214}
4215
4216static void rocker_remove(struct pci_dev *pdev)
4217{
4218 struct rocker *rocker = pci_get_drvdata(pdev);
4219
9f6bbf7c 4220 rocker_free_tbls(rocker);
4b8ac966
JP		 4221 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4222 rocker_remove_ports(rocker);
4223 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4224 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4225 rocker_dma_rings_fini(rocker);
4226 rocker_msix_fini(rocker);
4227 iounmap(rocker->hw_addr);
4228 pci_release_regions(rocker->pdev);
4229 pci_disable_device(rocker->pdev);
4230 kfree(rocker);
4231}
4232
4233static struct pci_driver rocker_pci_driver = {
4234 .name = rocker_driver_name,
4235 .id_table = rocker_pci_id_table,
4236 .probe = rocker_probe,
4237 .remove = rocker_remove,
4238};
4239
6c707945
SF		 4240/************************************
4241 * Net device notifier event handler
4242 ************************************/
4243
4244static bool rocker_port_dev_check(struct net_device *dev)
4245{
4246 return dev->netdev_ops == &rocker_port_netdev_ops;
4247}
4248
4249static int rocker_port_bridge_join(struct rocker_port *rocker_port,
4250 struct net_device *bridge)
4251{
4252 int err;
4253
4254 rocker_port_internal_vlan_id_put(rocker_port,
4255 rocker_port->dev->ifindex);
4256
4257 rocker_port->bridge_dev = bridge;
4258
4259 /* Use bridge internal VLAN ID for untagged pkts */
4260 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4261 if (err)
4262 return err;
4263 rocker_port->internal_vlan_id =
4264 rocker_port_internal_vlan_id_get(rocker_port,
4265 bridge->ifindex);
4266 err = rocker_port_vlan(rocker_port, 0, 0);
4267
4268 return err;
4269}
4270
4271static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
4272{
4273 int err;
4274
4275 rocker_port_internal_vlan_id_put(rocker_port,
4276 rocker_port->bridge_dev->ifindex);
4277
4278 rocker_port->bridge_dev = NULL;
4279
4280 /* Use port internal VLAN ID for untagged pkts */
4281 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4282 if (err)
4283 return err;
4284 rocker_port->internal_vlan_id =
4285 rocker_port_internal_vlan_id_get(rocker_port,
4286 rocker_port->dev->ifindex);
4287 err = rocker_port_vlan(rocker_port, 0, 0);
4288
4289 return err;
4290}
4291
4292static int rocker_port_master_changed(struct net_device *dev)
4293{
4294 struct rocker_port *rocker_port = netdev_priv(dev);
4295 struct net_device *master = netdev_master_upper_dev_get(dev);
4296 int err = 0;
4297
4298 if (master && master->rtnl_link_ops &&
4299 !strcmp(master->rtnl_link_ops->kind, "bridge"))
4300 err = rocker_port_bridge_join(rocker_port, master);
4301 else
4302 err = rocker_port_bridge_leave(rocker_port);
4303
4304 return err;
4305}
4306
4307static int rocker_netdevice_event(struct notifier_block *unused,
4308 unsigned long event, void *ptr)
4309{
4310 struct net_device *dev;
4311 int err;
4312
4313 switch (event) {
4314 case NETDEV_CHANGEUPPER:
4315 dev = netdev_notifier_info_to_dev(ptr);
4316 if (!rocker_port_dev_check(dev))
4317 return NOTIFY_DONE;
4318 err = rocker_port_master_changed(dev);
4319 if (err)
4320 netdev_warn(dev,
4321 "failed to reflect master change (err %d)\n",
4322 err);
4323 break;
4324 }
4325
4326 return NOTIFY_DONE;
4327}
4328
4329static struct notifier_block rocker_netdevice_nb __read_mostly = {
4330 .notifier_call = rocker_netdevice_event,
4331};
4332
4b8ac966
JP		 4333/***********************
4334 * Module init and exit
4335 ***********************/
4336
4337static int __init rocker_module_init(void)
4338{
6c707945
SF		 4339 int err;
4340
4341 register_netdevice_notifier(&rocker_netdevice_nb);
4342 err = pci_register_driver(&rocker_pci_driver);
4343 if (err)
4344 goto err_pci_register_driver;
4345 return 0;
4346
4347err_pci_register_driver:
4348 unregister_netdevice_notifier(&rocker_netdevice_nb);
4349 return err;
4b8ac966
JP		 4350}
4351
4352static void __exit rocker_module_exit(void)
4353{
6c707945 4354 unregister_netdevice_notifier(&rocker_netdevice_nb);
4b8ac966
JP		 4355 pci_unregister_driver(&rocker_pci_driver);
4356}
4357
4358module_init(rocker_module_init);
4359module_exit(rocker_module_exit);
4360
4361MODULE_LICENSE("GPL v2");
4362MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
4363MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
4364MODULE_DESCRIPTION("Rocker switch device driver");
4365MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);
Ubuntu Focal Linux kernel mirror