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bridge: new mode flag to indicate mode 'undefined'
[mirror_ubuntu-focal-kernel.git] / drivers / net / ethernet / rocker / rocker.c
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4b8ac966
JP		 1/*
2 * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
3 * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
4 * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/pci.h>
15#include <linux/interrupt.h>
16#include <linux/sched.h>
17#include <linux/wait.h>
18#include <linux/spinlock.h>
9f6bbf7c 19#include <linux/hashtable.h>
4b8ac966
JP		 20#include <linux/crc32.h>
21#include <linux/sort.h>
22#include <linux/random.h>
23#include <linux/netdevice.h>
24#include <linux/inetdevice.h>
25#include <linux/skbuff.h>
26#include <linux/socket.h>
27#include <linux/etherdevice.h>
28#include <linux/ethtool.h>
29#include <linux/if_ether.h>
30#include <linux/if_vlan.h>
6c707945 31#include <linux/if_bridge.h>
9f6bbf7c 32#include <linux/bitops.h>
4b8ac966
JP		 33#include <net/switchdev.h>
34#include <net/rtnetlink.h>
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
9b03c71f
JP		 651static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
652{
653 return *(__be16 *) rocker_tlv_data(tlv);
654}
655
4b8ac966
JP		 656static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
657{
658 return *(u32 *) rocker_tlv_data(tlv);
659}
660
661static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
662{
663 return *(u64 *) rocker_tlv_data(tlv);
664}
665
666static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
667 const char *buf, int buf_len)
668{
669 const struct rocker_tlv *tlv;
670 const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
671 int rem;
672
673 memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
674
675 rocker_tlv_for_each(tlv, head, buf_len, rem) {
676 u32 type = rocker_tlv_type(tlv);
677
678 if (type > 0 && type <= maxtype)
679 tb[type] = (struct rocker_tlv *) tlv;
680 }
681}
682
683static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
684 const struct rocker_tlv *tlv)
685{
686 rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
687 rocker_tlv_len(tlv));
688}
689
690static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
691 struct rocker_desc_info *desc_info)
692{
693 rocker_tlv_parse(tb, maxtype, desc_info->data,
694 desc_info->desc->tlv_size);
695}
696
697static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
698{
699 return (struct rocker_tlv *) ((char *) desc_info->data +
700 desc_info->tlv_size);
701}
702
703static int rocker_tlv_put(struct rocker_desc_info *desc_info,
704 int attrtype, int attrlen, const void *data)
705{
706 int tail_room = desc_info->data_size - desc_info->tlv_size;
707 int total_size = rocker_tlv_total_size(attrlen);
708 struct rocker_tlv *tlv;
709
710 if (unlikely(tail_room < total_size))
711 return -EMSGSIZE;
712
713 tlv = rocker_tlv_start(desc_info);
714 desc_info->tlv_size += total_size;
715 tlv->type = attrtype;
716 tlv->len = rocker_tlv_attr_size(attrlen);
717 memcpy(rocker_tlv_data(tlv), data, attrlen);
718 memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
719 return 0;
720}
721
722static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
723 int attrtype, u8 value)
724{
725 return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
726}
727
728static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
729 int attrtype, u16 value)
730{
731 return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
732}
733
9b03c71f
JP		 734static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
735 int attrtype, __be16 value)
736{
737 return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
738}
739
4b8ac966
JP		 740static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
741 int attrtype, u32 value)
742{
743 return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
744}
745
9b03c71f
JP		 746static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
747 int attrtype, __be32 value)
748{
749 return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
750}
751
4b8ac966
JP		 752static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
753 int attrtype, u64 value)
754{
755 return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
756}
757
758static struct rocker_tlv *
759rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
760{
761 struct rocker_tlv *start = rocker_tlv_start(desc_info);
762
763 if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
764 return NULL;
765
766 return start;
767}
768
769static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
770 struct rocker_tlv *start)
771{
772 start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
773}
774
775static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
776 struct rocker_tlv *start)
777{
778 desc_info->tlv_size = (char *) start - desc_info->data;
779}
780
781/******************************************
782 * DMA rings and descriptors manipulations
783 ******************************************/
784
785static u32 __pos_inc(u32 pos, size_t limit)
786{
787 return ++pos == limit ? 0 : pos;
788}
789
790static int rocker_desc_err(struct rocker_desc_info *desc_info)
791{
792 return -(desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN);
793}
794
795static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
796{
797 desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
798}
799
800static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
801{
802 u32 comp_err = desc_info->desc->comp_err;
803
804 return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
805}
806
807static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
808{
809 return (void *) desc_info->desc->cookie;
810}
811
812static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
813 void *ptr)
814{
815 desc_info->desc->cookie = (long) ptr;
816}
817
818static struct rocker_desc_info *
819rocker_desc_head_get(struct rocker_dma_ring_info *info)
820{
821 static struct rocker_desc_info *desc_info;
822 u32 head = __pos_inc(info->head, info->size);
823
824 desc_info = &info->desc_info[info->head];
825 if (head == info->tail)
826 return NULL; /* ring full */
827 desc_info->tlv_size = 0;
828 return desc_info;
829}
830
831static void rocker_desc_commit(struct rocker_desc_info *desc_info)
832{
833 desc_info->desc->buf_size = desc_info->data_size;
834 desc_info->desc->tlv_size = desc_info->tlv_size;
835}
836
837static void rocker_desc_head_set(struct rocker *rocker,
838 struct rocker_dma_ring_info *info,
839 struct rocker_desc_info *desc_info)
840{
841 u32 head = __pos_inc(info->head, info->size);
842
843 BUG_ON(head == info->tail);
844 rocker_desc_commit(desc_info);
845 info->head = head;
846 rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
847}
848
849static struct rocker_desc_info *
850rocker_desc_tail_get(struct rocker_dma_ring_info *info)
851{
852 static struct rocker_desc_info *desc_info;
853
854 if (info->tail == info->head)
855 return NULL; /* nothing to be done between head and tail */
856 desc_info = &info->desc_info[info->tail];
857 if (!rocker_desc_gen(desc_info))
858 return NULL; /* gen bit not set, desc is not ready yet */
859 info->tail = __pos_inc(info->tail, info->size);
860 desc_info->tlv_size = desc_info->desc->tlv_size;
861 return desc_info;
862}
863
864static void rocker_dma_ring_credits_set(struct rocker *rocker,
865 struct rocker_dma_ring_info *info,
866 u32 credits)
867{
868 if (credits)
869 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
870}
871
872static unsigned long rocker_dma_ring_size_fix(size_t size)
873{
874 return max(ROCKER_DMA_SIZE_MIN,
875 min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
876}
877
878static int rocker_dma_ring_create(struct rocker *rocker,
879 unsigned int type,
880 size_t size,
881 struct rocker_dma_ring_info *info)
882{
883 int i;
884
885 BUG_ON(size != rocker_dma_ring_size_fix(size));
886 info->size = size;
887 info->type = type;
888 info->head = 0;
889 info->tail = 0;
890 info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
891 GFP_KERNEL);
892 if (!info->desc_info)
893 return -ENOMEM;
894
895 info->desc = pci_alloc_consistent(rocker->pdev,
896 info->size * sizeof(*info->desc),
897 &info->mapaddr);
898 if (!info->desc) {
899 kfree(info->desc_info);
900 return -ENOMEM;
901 }
902
903 for (i = 0; i < info->size; i++)
904 info->desc_info[i].desc = &info->desc[i];
905
906 rocker_write32(rocker, DMA_DESC_CTRL(info->type),
907 ROCKER_DMA_DESC_CTRL_RESET);
908 rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
909 rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
910
911 return 0;
912}
913
914static void rocker_dma_ring_destroy(struct rocker *rocker,
915 struct rocker_dma_ring_info *info)
916{
917 rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
918
919 pci_free_consistent(rocker->pdev,
920 info->size * sizeof(struct rocker_desc),
921 info->desc, info->mapaddr);
922 kfree(info->desc_info);
923}
924
925static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
926 struct rocker_dma_ring_info *info)
927{
928 int i;
929
930 BUG_ON(info->head || info->tail);
931
932 /* When ring is consumer, we need to advance head for each desc.
933 * That tells hw that the desc is ready to be used by it.
934 */
935 for (i = 0; i < info->size - 1; i++)
936 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
937 rocker_desc_commit(&info->desc_info[i]);
938}
939
940static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
941 struct rocker_dma_ring_info *info,
942 int direction, size_t buf_size)
943{
944 struct pci_dev *pdev = rocker->pdev;
945 int i;
946 int err;
947
948 for (i = 0; i < info->size; i++) {
949 struct rocker_desc_info *desc_info = &info->desc_info[i];
950 struct rocker_desc *desc = &info->desc[i];
951 dma_addr_t dma_handle;
952 char *buf;
953
954 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
955 if (!buf) {
956 err = -ENOMEM;
957 goto rollback;
958 }
959
960 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
961 if (pci_dma_mapping_error(pdev, dma_handle)) {
962 kfree(buf);
963 err = -EIO;
964 goto rollback;
965 }
966
967 desc_info->data = buf;
968 desc_info->data_size = buf_size;
969 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
970
971 desc->buf_addr = dma_handle;
972 desc->buf_size = buf_size;
973 }
974 return 0;
975
976rollback:
977 for (i--; i >= 0; i--) {
978 struct rocker_desc_info *desc_info = &info->desc_info[i];
979
980 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
981 desc_info->data_size, direction);
982 kfree(desc_info->data);
983 }
984 return err;
985}
986
987static void rocker_dma_ring_bufs_free(struct rocker *rocker,
988 struct rocker_dma_ring_info *info,
989 int direction)
990{
991 struct pci_dev *pdev = rocker->pdev;
992 int i;
993
994 for (i = 0; i < info->size; i++) {
995 struct rocker_desc_info *desc_info = &info->desc_info[i];
996 struct rocker_desc *desc = &info->desc[i];
997
998 desc->buf_addr = 0;
999 desc->buf_size = 0;
1000 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1001 desc_info->data_size, direction);
1002 kfree(desc_info->data);
1003 }
1004}
1005
1006static int rocker_dma_rings_init(struct rocker *rocker)
1007{
1008 struct pci_dev *pdev = rocker->pdev;
1009 int err;
1010
1011 err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1012 ROCKER_DMA_CMD_DEFAULT_SIZE,
1013 &rocker->cmd_ring);
1014 if (err) {
1015 dev_err(&pdev->dev, "failed to create command dma ring\n");
1016 return err;
1017 }
1018
1019 spin_lock_init(&rocker->cmd_ring_lock);
1020
1021 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1022 PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1023 if (err) {
1024 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1025 goto err_dma_cmd_ring_bufs_alloc;
1026 }
1027
1028 err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1029 ROCKER_DMA_EVENT_DEFAULT_SIZE,
1030 &rocker->event_ring);
1031 if (err) {
1032 dev_err(&pdev->dev, "failed to create event dma ring\n");
1033 goto err_dma_event_ring_create;
1034 }
1035
1036 err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1037 PCI_DMA_FROMDEVICE, PAGE_SIZE);
1038 if (err) {
1039 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1040 goto err_dma_event_ring_bufs_alloc;
1041 }
1042 rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1043 return 0;
1044
1045err_dma_event_ring_bufs_alloc:
1046 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1047err_dma_event_ring_create:
1048 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1049 PCI_DMA_BIDIRECTIONAL);
1050err_dma_cmd_ring_bufs_alloc:
1051 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1052 return err;
1053}
1054
1055static void rocker_dma_rings_fini(struct rocker *rocker)
1056{
1057 rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1058 PCI_DMA_BIDIRECTIONAL);
1059 rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1060 rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1061 PCI_DMA_BIDIRECTIONAL);
1062 rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1063}
1064
1065static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1066 struct rocker_port *rocker_port,
1067 struct rocker_desc_info *desc_info,
1068 struct sk_buff *skb, size_t buf_len)
1069{
1070 struct pci_dev *pdev = rocker->pdev;
1071 dma_addr_t dma_handle;
1072
1073 dma_handle = pci_map_single(pdev, skb->data, buf_len,
1074 PCI_DMA_FROMDEVICE);
1075 if (pci_dma_mapping_error(pdev, dma_handle))
1076 return -EIO;
1077 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1078 goto tlv_put_failure;
1079 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1080 goto tlv_put_failure;
1081 return 0;
1082
1083tlv_put_failure:
1084 pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1085 desc_info->tlv_size = 0;
1086 return -EMSGSIZE;
1087}
1088
1089static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1090{
1091 return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1092}
1093
1094static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1095 struct rocker_port *rocker_port,
1096 struct rocker_desc_info *desc_info)
1097{
1098 struct net_device *dev = rocker_port->dev;
1099 struct sk_buff *skb;
1100 size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1101 int err;
1102
1103 /* Ensure that hw will see tlv_size zero in case of an error.
1104 * That tells hw to use another descriptor.
1105 */
1106 rocker_desc_cookie_ptr_set(desc_info, NULL);
1107 desc_info->tlv_size = 0;
1108
1109 skb = netdev_alloc_skb_ip_align(dev, buf_len);
1110 if (!skb)
1111 return -ENOMEM;
1112 err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1113 skb, buf_len);
1114 if (err) {
1115 dev_kfree_skb_any(skb);
1116 return err;
1117 }
1118 rocker_desc_cookie_ptr_set(desc_info, skb);
1119 return 0;
1120}
1121
1122static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1123 struct rocker_tlv **attrs)
1124{
1125 struct pci_dev *pdev = rocker->pdev;
1126 dma_addr_t dma_handle;
1127 size_t len;
1128
1129 if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1130 !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1131 return;
1132 dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1133 len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1134 pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1135}
1136
1137static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1138 struct rocker_desc_info *desc_info)
1139{
1140 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1141 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1142
1143 if (!skb)
1144 return;
1145 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1146 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1147 dev_kfree_skb_any(skb);
1148}
1149
1150static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1151 struct rocker_port *rocker_port)
1152{
1153 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1154 int i;
1155 int err;
1156
1157 for (i = 0; i < rx_ring->size; i++) {
1158 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1159 &rx_ring->desc_info[i]);
1160 if (err)
1161 goto rollback;
1162 }
1163 return 0;
1164
1165rollback:
1166 for (i--; i >= 0; i--)
1167 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1168 return err;
1169}
1170
1171static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1172 struct rocker_port *rocker_port)
1173{
1174 struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1175 int i;
1176
1177 for (i = 0; i < rx_ring->size; i++)
1178 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1179}
1180
1181static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1182{
1183 struct rocker *rocker = rocker_port->rocker;
1184 int err;
1185
1186 err = rocker_dma_ring_create(rocker,
1187 ROCKER_DMA_TX(rocker_port->port_number),
1188 ROCKER_DMA_TX_DEFAULT_SIZE,
1189 &rocker_port->tx_ring);
1190 if (err) {
1191 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1192 return err;
1193 }
1194
1195 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1196 PCI_DMA_TODEVICE,
1197 ROCKER_DMA_TX_DESC_SIZE);
1198 if (err) {
1199 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1200 goto err_dma_tx_ring_bufs_alloc;
1201 }
1202
1203 err = rocker_dma_ring_create(rocker,
1204 ROCKER_DMA_RX(rocker_port->port_number),
1205 ROCKER_DMA_RX_DEFAULT_SIZE,
1206 &rocker_port->rx_ring);
1207 if (err) {
1208 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1209 goto err_dma_rx_ring_create;
1210 }
1211
1212 err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1213 PCI_DMA_BIDIRECTIONAL,
1214 ROCKER_DMA_RX_DESC_SIZE);
1215 if (err) {
1216 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1217 goto err_dma_rx_ring_bufs_alloc;
1218 }
1219
1220 err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1221 if (err) {
1222 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1223 goto err_dma_rx_ring_skbs_alloc;
1224 }
1225 rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1226
1227 return 0;
1228
1229err_dma_rx_ring_skbs_alloc:
1230 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1231 PCI_DMA_BIDIRECTIONAL);
1232err_dma_rx_ring_bufs_alloc:
1233 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1234err_dma_rx_ring_create:
1235 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1236 PCI_DMA_TODEVICE);
1237err_dma_tx_ring_bufs_alloc:
1238 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1239 return err;
1240}
1241
1242static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1243{
1244 struct rocker *rocker = rocker_port->rocker;
1245
1246 rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1247 rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1248 PCI_DMA_BIDIRECTIONAL);
1249 rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1250 rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1251 PCI_DMA_TODEVICE);
1252 rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1253}
1254
1255static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1256{
1257 u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1258
1259 if (enable)
1260 val |= 1 << rocker_port->lport;
1261 else
1262 val &= ~(1 << rocker_port->lport);
1263 rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1264}
1265
1266/********************************
1267 * Interrupt handler and helpers
1268 ********************************/
1269
1270static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1271{
1272 struct rocker *rocker = dev_id;
1273 struct rocker_desc_info *desc_info;
1274 struct rocker_wait *wait;
1275 u32 credits = 0;
1276
1277 spin_lock(&rocker->cmd_ring_lock);
1278 while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1279 wait = rocker_desc_cookie_ptr_get(desc_info);
1280 if (wait->nowait) {
1281 rocker_desc_gen_clear(desc_info);
1282 rocker_wait_destroy(wait);
1283 } else {
1284 rocker_wait_wake_up(wait);
1285 }
1286 credits++;
1287 }
1288 spin_unlock(&rocker->cmd_ring_lock);
1289 rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1290
1291 return IRQ_HANDLED;
1292}
1293
1294static void rocker_port_link_up(struct rocker_port *rocker_port)
1295{
1296 netif_carrier_on(rocker_port->dev);
1297 netdev_info(rocker_port->dev, "Link is up\n");
1298}
1299
1300static void rocker_port_link_down(struct rocker_port *rocker_port)
1301{
1302 netif_carrier_off(rocker_port->dev);
1303 netdev_info(rocker_port->dev, "Link is down\n");
1304}
1305
1306static int rocker_event_link_change(struct rocker *rocker,
1307 const struct rocker_tlv *info)
1308{
1309 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1310 unsigned int port_number;
1311 bool link_up;
1312 struct rocker_port *rocker_port;
1313
1314 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1315 if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LPORT] ||
1316 !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1317 return -EIO;
1318 port_number =
1319 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LPORT]) - 1;
1320 link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1321
1322 if (port_number >= rocker->port_count)
1323 return -EINVAL;
1324
1325 rocker_port = rocker->ports[port_number];
1326 if (netif_carrier_ok(rocker_port->dev) != link_up) {
1327 if (link_up)
1328 rocker_port_link_up(rocker_port);
1329 else
1330 rocker_port_link_down(rocker_port);
1331 }
1332
1333 return 0;
1334}
1335
9f6bbf7c
SF		 1336#define ROCKER_OP_FLAG_REMOVE BIT(0)
1337#define ROCKER_OP_FLAG_NOWAIT BIT(1)
1338#define ROCKER_OP_FLAG_LEARNED BIT(2)
6c707945
SF		 1339#define ROCKER_OP_FLAG_REFRESH BIT(3)
1340
1341static int rocker_port_fdb(struct rocker_port *rocker_port,
1342 const unsigned char *addr,
1343 __be16 vlan_id, int flags);
1344
1345static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1346 const struct rocker_tlv *info)
1347{
1348 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1349 unsigned int port_number;
1350 struct rocker_port *rocker_port;
1351 unsigned char *addr;
1352 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1353 __be16 vlan_id;
1354
1355 rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1356 if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_LPORT] ||
1357 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1358 !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1359 return -EIO;
1360 port_number =
1361 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_LPORT]) - 1;
1362 addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
9b03c71f 1363 vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
6c707945
SF		 1364
1365 if (port_number >= rocker->port_count)
1366 return -EINVAL;
1367
1368 rocker_port = rocker->ports[port_number];
1369
1370 if (rocker_port->stp_state != BR_STATE_LEARNING &&
1371 rocker_port->stp_state != BR_STATE_FORWARDING)
1372 return 0;
1373
1374 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
1375}
9f6bbf7c 1376
4b8ac966
JP		 1377static int rocker_event_process(struct rocker *rocker,
1378 struct rocker_desc_info *desc_info)
1379{
1380 struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1381 struct rocker_tlv *info;
1382 u16 type;
1383
1384 rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1385 if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1386 !attrs[ROCKER_TLV_EVENT_INFO])
1387 return -EIO;
1388
1389 type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1390 info = attrs[ROCKER_TLV_EVENT_INFO];
1391
1392 switch (type) {
1393 case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1394 return rocker_event_link_change(rocker, info);
6c707945
SF		 1395 case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1396 return rocker_event_mac_vlan_seen(rocker, info);
4b8ac966
JP		 1397 }
1398
1399 return -EOPNOTSUPP;
1400}
1401
1402static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1403{
1404 struct rocker *rocker = dev_id;
1405 struct pci_dev *pdev = rocker->pdev;
1406 struct rocker_desc_info *desc_info;
1407 u32 credits = 0;
1408 int err;
1409
1410 while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1411 err = rocker_desc_err(desc_info);
1412 if (err) {
1413 dev_err(&pdev->dev, "event desc received with err %d\n",
1414 err);
1415 } else {
1416 err = rocker_event_process(rocker, desc_info);
1417 if (err)
1418 dev_err(&pdev->dev, "event processing failed with err %d\n",
1419 err);
1420 }
1421 rocker_desc_gen_clear(desc_info);
1422 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1423 credits++;
1424 }
1425 rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1426
1427 return IRQ_HANDLED;
1428}
1429
1430static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1431{
1432 struct rocker_port *rocker_port = dev_id;
1433
1434 napi_schedule(&rocker_port->napi_tx);
1435 return IRQ_HANDLED;
1436}
1437
1438static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1439{
1440 struct rocker_port *rocker_port = dev_id;
1441
1442 napi_schedule(&rocker_port->napi_rx);
1443 return IRQ_HANDLED;
1444}
1445
1446/********************
1447 * Command interface
1448 ********************/
1449
1450typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1451 struct rocker_port *rocker_port,
1452 struct rocker_desc_info *desc_info,
1453 void *priv);
1454
1455static int rocker_cmd_exec(struct rocker *rocker,
1456 struct rocker_port *rocker_port,
1457 rocker_cmd_cb_t prepare, void *prepare_priv,
1458 rocker_cmd_cb_t process, void *process_priv,
1459 bool nowait)
1460{
1461 struct rocker_desc_info *desc_info;
1462 struct rocker_wait *wait;
1463 unsigned long flags;
1464 int err;
1465
1466 wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL);
1467 if (!wait)
1468 return -ENOMEM;
1469 wait->nowait = nowait;
1470
1471 spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1472 desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1473 if (!desc_info) {
1474 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1475 err = -EAGAIN;
1476 goto out;
1477 }
1478 err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1479 if (err) {
1480 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1481 goto out;
1482 }
1483 rocker_desc_cookie_ptr_set(desc_info, wait);
1484 rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1485 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1486
1487 if (nowait)
1488 return 0;
1489
1490 if (!rocker_wait_event_timeout(wait, HZ / 10))
1491 return -EIO;
1492
1493 err = rocker_desc_err(desc_info);
1494 if (err)
1495 return err;
1496
1497 if (process)
1498 err = process(rocker, rocker_port, desc_info, process_priv);
1499
1500 rocker_desc_gen_clear(desc_info);
1501out:
1502 rocker_wait_destroy(wait);
1503 return err;
1504}
1505
1506static int
1507rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1508 struct rocker_port *rocker_port,
1509 struct rocker_desc_info *desc_info,
1510 void *priv)
1511{
1512 struct rocker_tlv *cmd_info;
1513
1514 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1515 ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1516 return -EMSGSIZE;
1517 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1518 if (!cmd_info)
1519 return -EMSGSIZE;
1520 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1521 rocker_port->lport))
1522 return -EMSGSIZE;
1523 rocker_tlv_nest_end(desc_info, cmd_info);
1524 return 0;
1525}
1526
1527static int
1528rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1529 struct rocker_port *rocker_port,
1530 struct rocker_desc_info *desc_info,
1531 void *priv)
1532{
1533 struct ethtool_cmd *ecmd = priv;
1534 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1535 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1536 u32 speed;
1537 u8 duplex;
1538 u8 autoneg;
1539
1540 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1541 if (!attrs[ROCKER_TLV_CMD_INFO])
1542 return -EIO;
1543
1544 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1545 attrs[ROCKER_TLV_CMD_INFO]);
1546 if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1547 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1548 !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1549 return -EIO;
1550
1551 speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1552 duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1553 autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1554
1555 ecmd->transceiver = XCVR_INTERNAL;
1556 ecmd->supported = SUPPORTED_TP;
1557 ecmd->phy_address = 0xff;
1558 ecmd->port = PORT_TP;
1559 ethtool_cmd_speed_set(ecmd, speed);
1560 ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1561 ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1562
1563 return 0;
1564}
1565
1566static int
1567rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1568 struct rocker_port *rocker_port,
1569 struct rocker_desc_info *desc_info,
1570 void *priv)
1571{
1572 unsigned char *macaddr = priv;
1573 struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1574 struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1575 struct rocker_tlv *attr;
1576
1577 rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1578 if (!attrs[ROCKER_TLV_CMD_INFO])
1579 return -EIO;
1580
1581 rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1582 attrs[ROCKER_TLV_CMD_INFO]);
1583 attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1584 if (!attr)
1585 return -EIO;
1586
1587 if (rocker_tlv_len(attr) != ETH_ALEN)
1588 return -EINVAL;
1589
1590 ether_addr_copy(macaddr, rocker_tlv_data(attr));
1591 return 0;
1592}
1593
1594static int
1595rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1596 struct rocker_port *rocker_port,
1597 struct rocker_desc_info *desc_info,
1598 void *priv)
1599{
1600 struct ethtool_cmd *ecmd = priv;
1601 struct rocker_tlv *cmd_info;
1602
1603 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1604 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1605 return -EMSGSIZE;
1606 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1607 if (!cmd_info)
1608 return -EMSGSIZE;
1609 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1610 rocker_port->lport))
1611 return -EMSGSIZE;
1612 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1613 ethtool_cmd_speed(ecmd)))
1614 return -EMSGSIZE;
1615 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1616 ecmd->duplex))
1617 return -EMSGSIZE;
1618 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1619 ecmd->autoneg))
1620 return -EMSGSIZE;
1621 rocker_tlv_nest_end(desc_info, cmd_info);
1622 return 0;
1623}
1624
1625static int
1626rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1627 struct rocker_port *rocker_port,
1628 struct rocker_desc_info *desc_info,
1629 void *priv)
1630{
1631 unsigned char *macaddr = priv;
1632 struct rocker_tlv *cmd_info;
1633
1634 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1635 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1636 return -EMSGSIZE;
1637 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1638 if (!cmd_info)
1639 return -EMSGSIZE;
1640 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1641 rocker_port->lport))
1642 return -EMSGSIZE;
1643 if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1644 ETH_ALEN, macaddr))
1645 return -EMSGSIZE;
1646 rocker_tlv_nest_end(desc_info, cmd_info);
1647 return 0;
1648}
1649
5111f80c
SF		 1650static int
1651rocker_cmd_set_port_learning_prep(struct rocker *rocker,
1652 struct rocker_port *rocker_port,
1653 struct rocker_desc_info *desc_info,
1654 void *priv)
1655{
1656 struct rocker_tlv *cmd_info;
1657
1658 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1659 ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1660 return -EMSGSIZE;
1661 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1662 if (!cmd_info)
1663 return -EMSGSIZE;
1664 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1665 rocker_port->lport))
1666 return -EMSGSIZE;
1667 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1668 !!(rocker_port->brport_flags & BR_LEARNING)))
1669 return -EMSGSIZE;
1670 rocker_tlv_nest_end(desc_info, cmd_info);
1671 return 0;
1672}
1673
4b8ac966
JP		 1674static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1675 struct ethtool_cmd *ecmd)
1676{
1677 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1678 rocker_cmd_get_port_settings_prep, NULL,
1679 rocker_cmd_get_port_settings_ethtool_proc,
1680 ecmd, false);
1681}
1682
1683static int rocker_cmd_get_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_get_port_settings_prep, NULL,
1688 rocker_cmd_get_port_settings_macaddr_proc,
1689 macaddr, false);
1690}
1691
1692static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1693 struct ethtool_cmd *ecmd)
1694{
1695 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1696 rocker_cmd_set_port_settings_ethtool_prep,
1697 ecmd, NULL, NULL, false);
1698}
1699
1700static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1701 unsigned char *macaddr)
1702{
1703 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1704 rocker_cmd_set_port_settings_macaddr_prep,
1705 macaddr, NULL, NULL, false);
1706}
1707
5111f80c
SF		 1708static int rocker_port_set_learning(struct rocker_port *rocker_port)
1709{
1710 return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1711 rocker_cmd_set_port_learning_prep,
1712 NULL, NULL, NULL, false);
1713}
1714
9f6bbf7c
SF		 1715static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1716 struct rocker_flow_tbl_entry *entry)
1717{
1718 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1719 entry->key.ig_port.in_lport))
1720 return -EMSGSIZE;
1721 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1722 entry->key.ig_port.in_lport_mask))
1723 return -EMSGSIZE;
1724 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1725 entry->key.ig_port.goto_tbl))
1726 return -EMSGSIZE;
1727
1728 return 0;
1729}
1730
1731static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1732 struct rocker_flow_tbl_entry *entry)
1733{
1734 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1735 entry->key.vlan.in_lport))
1736 return -EMSGSIZE;
9b03c71f
JP		 1737 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1738 entry->key.vlan.vlan_id))
9f6bbf7c 1739 return -EMSGSIZE;
9b03c71f
JP		 1740 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1741 entry->key.vlan.vlan_id_mask))
9f6bbf7c
SF		 1742 return -EMSGSIZE;
1743 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1744 entry->key.vlan.goto_tbl))
1745 return -EMSGSIZE;
1746 if (entry->key.vlan.untagged &&
9b03c71f
JP		 1747 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1748 entry->key.vlan.new_vlan_id))
9f6bbf7c
SF		 1749 return -EMSGSIZE;
1750
1751 return 0;
1752}
1753
1754static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1755 struct rocker_flow_tbl_entry *entry)
1756{
1757 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1758 entry->key.term_mac.in_lport))
1759 return -EMSGSIZE;
1760 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1761 entry->key.term_mac.in_lport_mask))
1762 return -EMSGSIZE;
9b03c71f
JP		 1763 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1764 entry->key.term_mac.eth_type))
9f6bbf7c
SF		 1765 return -EMSGSIZE;
1766 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1767 ETH_ALEN, entry->key.term_mac.eth_dst))
1768 return -EMSGSIZE;
1769 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1770 ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1771 return -EMSGSIZE;
9b03c71f
JP		 1772 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1773 entry->key.term_mac.vlan_id))
9f6bbf7c 1774 return -EMSGSIZE;
9b03c71f
JP		 1775 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1776 entry->key.term_mac.vlan_id_mask))
9f6bbf7c
SF		 1777 return -EMSGSIZE;
1778 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1779 entry->key.term_mac.goto_tbl))
1780 return -EMSGSIZE;
1781 if (entry->key.term_mac.copy_to_cpu &&
1782 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1783 entry->key.term_mac.copy_to_cpu))
1784 return -EMSGSIZE;
1785
1786 return 0;
1787}
1788
1789static int
1790rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1791 struct rocker_flow_tbl_entry *entry)
1792{
9b03c71f
JP		 1793 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1794 entry->key.ucast_routing.eth_type))
9f6bbf7c 1795 return -EMSGSIZE;
9b03c71f
JP		 1796 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1797 entry->key.ucast_routing.dst4))
9f6bbf7c 1798 return -EMSGSIZE;
9b03c71f
JP		 1799 if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1800 entry->key.ucast_routing.dst4_mask))
9f6bbf7c
SF		 1801 return -EMSGSIZE;
1802 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1803 entry->key.ucast_routing.goto_tbl))
1804 return -EMSGSIZE;
1805 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1806 entry->key.ucast_routing.group_id))
1807 return -EMSGSIZE;
1808
1809 return 0;
1810}
1811
1812static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
1813 struct rocker_flow_tbl_entry *entry)
1814{
1815 if (entry->key.bridge.has_eth_dst &&
1816 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1817 ETH_ALEN, entry->key.bridge.eth_dst))
1818 return -EMSGSIZE;
1819 if (entry->key.bridge.has_eth_dst_mask &&
1820 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1821 ETH_ALEN, entry->key.bridge.eth_dst_mask))
1822 return -EMSGSIZE;
1823 if (entry->key.bridge.vlan_id &&
9b03c71f
JP		 1824 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1825 entry->key.bridge.vlan_id))
9f6bbf7c
SF		 1826 return -EMSGSIZE;
1827 if (entry->key.bridge.tunnel_id &&
1828 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
1829 entry->key.bridge.tunnel_id))
1830 return -EMSGSIZE;
1831 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1832 entry->key.bridge.goto_tbl))
1833 return -EMSGSIZE;
1834 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1835 entry->key.bridge.group_id))
1836 return -EMSGSIZE;
1837 if (entry->key.bridge.copy_to_cpu &&
1838 rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1839 entry->key.bridge.copy_to_cpu))
1840 return -EMSGSIZE;
1841
1842 return 0;
1843}
1844
1845static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
1846 struct rocker_flow_tbl_entry *entry)
1847{
1848 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1849 entry->key.acl.in_lport))
1850 return -EMSGSIZE;
1851 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1852 entry->key.acl.in_lport_mask))
1853 return -EMSGSIZE;
1854 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1855 ETH_ALEN, entry->key.acl.eth_src))
1856 return -EMSGSIZE;
1857 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
1858 ETH_ALEN, entry->key.acl.eth_src_mask))
1859 return -EMSGSIZE;
1860 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1861 ETH_ALEN, entry->key.acl.eth_dst))
1862 return -EMSGSIZE;
1863 if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1864 ETH_ALEN, entry->key.acl.eth_dst_mask))
1865 return -EMSGSIZE;
9b03c71f
JP		 1866 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1867 entry->key.acl.eth_type))
9f6bbf7c 1868 return -EMSGSIZE;
9b03c71f
JP		 1869 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1870 entry->key.acl.vlan_id))
9f6bbf7c 1871 return -EMSGSIZE;
9b03c71f
JP		 1872 if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1873 entry->key.acl.vlan_id_mask))
9f6bbf7c
SF		 1874 return -EMSGSIZE;
1875
1876 switch (ntohs(entry->key.acl.eth_type)) {
1877 case ETH_P_IP:
1878 case ETH_P_IPV6:
1879 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
1880 entry->key.acl.ip_proto))
1881 return -EMSGSIZE;
1882 if (rocker_tlv_put_u8(desc_info,
1883 ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
1884 entry->key.acl.ip_proto_mask))
1885 return -EMSGSIZE;
1886 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
1887 entry->key.acl.ip_tos & 0x3f))
1888 return -EMSGSIZE;
1889 if (rocker_tlv_put_u8(desc_info,
1890 ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
1891 entry->key.acl.ip_tos_mask & 0x3f))
1892 return -EMSGSIZE;
1893 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
1894 (entry->key.acl.ip_tos & 0xc0) >> 6))
1895 return -EMSGSIZE;
1896 if (rocker_tlv_put_u8(desc_info,
1897 ROCKER_TLV_OF_DPA_IP_ECN_MASK,
1898 (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
1899 return -EMSGSIZE;
1900 break;
1901 }
1902
1903 if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
1904 rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1905 entry->key.acl.group_id))
1906 return -EMSGSIZE;
1907
1908 return 0;
1909}
1910
1911static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
1912 struct rocker_port *rocker_port,
1913 struct rocker_desc_info *desc_info,
1914 void *priv)
1915{
1916 struct rocker_flow_tbl_entry *entry = priv;
1917 struct rocker_tlv *cmd_info;
1918 int err = 0;
1919
1920 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1921 ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD))
1922 return -EMSGSIZE;
1923 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1924 if (!cmd_info)
1925 return -EMSGSIZE;
1926 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
1927 entry->key.tbl_id))
1928 return -EMSGSIZE;
1929 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
1930 entry->key.priority))
1931 return -EMSGSIZE;
1932 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
1933 return -EMSGSIZE;
1934 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1935 entry->cookie))
1936 return -EMSGSIZE;
1937
1938 switch (entry->key.tbl_id) {
1939 case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
1940 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
1941 break;
1942 case ROCKER_OF_DPA_TABLE_ID_VLAN:
1943 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
1944 break;
1945 case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
1946 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
1947 break;
1948 case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
1949 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
1950 break;
1951 case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
1952 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
1953 break;
1954 case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
1955 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
1956 break;
1957 default:
1958 err = -ENOTSUPP;
1959 break;
1960 }
1961
1962 if (err)
1963 return err;
1964
1965 rocker_tlv_nest_end(desc_info, cmd_info);
1966
1967 return 0;
1968}
1969
1970static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
1971 struct rocker_port *rocker_port,
1972 struct rocker_desc_info *desc_info,
1973 void *priv)
1974{
1975 const struct rocker_flow_tbl_entry *entry = priv;
1976 struct rocker_tlv *cmd_info;
1977
1978 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1979 ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL))
1980 return -EMSGSIZE;
1981 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1982 if (!cmd_info)
1983 return -EMSGSIZE;
1984 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1985 entry->cookie))
1986 return -EMSGSIZE;
1987 rocker_tlv_nest_end(desc_info, cmd_info);
1988
1989 return 0;
1990}
1991
1992static int
1993rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
1994 struct rocker_group_tbl_entry *entry)
1995{
1996 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_LPORT,
1997 ROCKER_GROUP_PORT_GET(entry->group_id)))
1998 return -EMSGSIZE;
1999 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2000 entry->l2_interface.pop_vlan))
2001 return -EMSGSIZE;
2002
2003 return 0;
2004}
2005
2006static int
2007rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2008 struct rocker_group_tbl_entry *entry)
2009{
2010 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2011 entry->l2_rewrite.group_id))
2012 return -EMSGSIZE;
2013 if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2014 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2015 ETH_ALEN, entry->l2_rewrite.eth_src))
2016 return -EMSGSIZE;
2017 if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2018 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2019 ETH_ALEN, entry->l2_rewrite.eth_dst))
2020 return -EMSGSIZE;
2021 if (entry->l2_rewrite.vlan_id &&
9b03c71f
JP		 2022 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2023 entry->l2_rewrite.vlan_id))
9f6bbf7c
SF		 2024 return -EMSGSIZE;
2025
2026 return 0;
2027}
2028
2029static int
2030rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2031 struct rocker_group_tbl_entry *entry)
2032{
2033 int i;
2034 struct rocker_tlv *group_ids;
2035
2036 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2037 entry->group_count))
2038 return -EMSGSIZE;
2039
2040 group_ids = rocker_tlv_nest_start(desc_info,
2041 ROCKER_TLV_OF_DPA_GROUP_IDS);
2042 if (!group_ids)
2043 return -EMSGSIZE;
2044
2045 for (i = 0; i < entry->group_count; i++)
2046 /* Note TLV array is 1-based */
2047 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2048 return -EMSGSIZE;
2049
2050 rocker_tlv_nest_end(desc_info, group_ids);
2051
2052 return 0;
2053}
2054
2055static int
2056rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2057 struct rocker_group_tbl_entry *entry)
2058{
2059 if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2060 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2061 ETH_ALEN, entry->l3_unicast.eth_src))
2062 return -EMSGSIZE;
2063 if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2064 rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2065 ETH_ALEN, entry->l3_unicast.eth_dst))
2066 return -EMSGSIZE;
2067 if (entry->l3_unicast.vlan_id &&
9b03c71f
JP		 2068 rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2069 entry->l3_unicast.vlan_id))
9f6bbf7c
SF		 2070 return -EMSGSIZE;
2071 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2072 entry->l3_unicast.ttl_check))
2073 return -EMSGSIZE;
2074 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2075 entry->l3_unicast.group_id))
2076 return -EMSGSIZE;
2077
2078 return 0;
2079}
2080
2081static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2082 struct rocker_port *rocker_port,
2083 struct rocker_desc_info *desc_info,
2084 void *priv)
2085{
2086 struct rocker_group_tbl_entry *entry = priv;
2087 struct rocker_tlv *cmd_info;
2088 int err = 0;
2089
2090 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2091 return -EMSGSIZE;
2092 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2093 if (!cmd_info)
2094 return -EMSGSIZE;
2095
2096 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2097 entry->group_id))
2098 return -EMSGSIZE;
2099
2100 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2101 case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2102 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2103 break;
2104 case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2105 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2106 break;
2107 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2108 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2109 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2110 break;
2111 case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2112 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2113 break;
2114 default:
2115 err = -ENOTSUPP;
2116 break;
2117 }
2118
2119 if (err)
2120 return err;
2121
2122 rocker_tlv_nest_end(desc_info, cmd_info);
2123
2124 return 0;
2125}
2126
2127static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2128 struct rocker_port *rocker_port,
2129 struct rocker_desc_info *desc_info,
2130 void *priv)
2131{
2132 const struct rocker_group_tbl_entry *entry = priv;
2133 struct rocker_tlv *cmd_info;
2134
2135 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2136 return -EMSGSIZE;
2137 cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2138 if (!cmd_info)
2139 return -EMSGSIZE;
2140 if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2141 entry->group_id))
2142 return -EMSGSIZE;
2143 rocker_tlv_nest_end(desc_info, cmd_info);
2144
2145 return 0;
2146}
2147
2148/*****************************************
2149 * Flow, group, FDB, internal VLAN tables
2150 *****************************************/
2151
2152static int rocker_init_tbls(struct rocker *rocker)
2153{
2154 hash_init(rocker->flow_tbl);
2155 spin_lock_init(&rocker->flow_tbl_lock);
2156
2157 hash_init(rocker->group_tbl);
2158 spin_lock_init(&rocker->group_tbl_lock);
2159
2160 hash_init(rocker->fdb_tbl);
2161 spin_lock_init(&rocker->fdb_tbl_lock);
2162
2163 hash_init(rocker->internal_vlan_tbl);
2164 spin_lock_init(&rocker->internal_vlan_tbl_lock);
2165
2166 return 0;
2167}
2168
2169static void rocker_free_tbls(struct rocker *rocker)
2170{
2171 unsigned long flags;
2172 struct rocker_flow_tbl_entry *flow_entry;
2173 struct rocker_group_tbl_entry *group_entry;
2174 struct rocker_fdb_tbl_entry *fdb_entry;
2175 struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2176 struct hlist_node *tmp;
2177 int bkt;
2178
2179 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2180 hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2181 hash_del(&flow_entry->entry);
2182 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2183
2184 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2185 hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2186 hash_del(&group_entry->entry);
2187 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2188
2189 spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2190 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2191 hash_del(&fdb_entry->entry);
2192 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2193
2194 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2195 hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2196 tmp, internal_vlan_entry, entry)
2197 hash_del(&internal_vlan_entry->entry);
2198 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2199}
2200
2201static struct rocker_flow_tbl_entry *
2202rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2203{
2204 struct rocker_flow_tbl_entry *found;
2205
2206 hash_for_each_possible(rocker->flow_tbl, found,
2207 entry, match->key_crc32) {
2208 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
2209 return found;
2210 }
2211
2212 return NULL;
2213}
2214
2215static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2216 struct rocker_flow_tbl_entry *match,
2217 bool nowait)
2218{
2219 struct rocker *rocker = rocker_port->rocker;
2220 struct rocker_flow_tbl_entry *found;
2221 unsigned long flags;
2222 bool add_to_hw = false;
2223 int err = 0;
2224
2225 match->key_crc32 = crc32(~0, &match->key, sizeof(match->key));
2226
2227 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2228
2229 found = rocker_flow_tbl_find(rocker, match);
2230
2231 if (found) {
2232 kfree(match);
2233 } else {
2234 found = match;
2235 found->cookie = rocker->flow_tbl_next_cookie++;
2236 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2237 add_to_hw = true;
2238 }
2239
2240 found->ref_count++;
2241
2242 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2243
2244 if (add_to_hw) {
2245 err = rocker_cmd_exec(rocker, rocker_port,
2246 rocker_cmd_flow_tbl_add,
2247 found, NULL, NULL, nowait);
2248 if (err) {
2249 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2250 hash_del(&found->entry);
2251 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2252 kfree(found);
2253 }
2254 }
2255
2256 return err;
2257}
2258
2259static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2260 struct rocker_flow_tbl_entry *match,
2261 bool nowait)
2262{
2263 struct rocker *rocker = rocker_port->rocker;
2264 struct rocker_flow_tbl_entry *found;
2265 unsigned long flags;
2266 bool del_from_hw = false;
2267 int err = 0;
2268
2269 match->key_crc32 = crc32(~0, &match->key, sizeof(match->key));
2270
2271 spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2272
2273 found = rocker_flow_tbl_find(rocker, match);
2274
2275 if (found) {
2276 found->ref_count--;
2277 if (found->ref_count == 0) {
2278 hash_del(&found->entry);
2279 del_from_hw = true;
2280 }
2281 }
2282
2283 spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2284
2285 kfree(match);
2286
2287 if (del_from_hw) {
2288 err = rocker_cmd_exec(rocker, rocker_port,
2289 rocker_cmd_flow_tbl_del,
2290 found, NULL, NULL, nowait);
2291 kfree(found);
2292 }
2293
2294 return err;
2295}
2296
2297static gfp_t rocker_op_flags_gfp(int flags)
2298{
2299 return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL;
2300}
2301
2302static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2303 int flags, struct rocker_flow_tbl_entry *entry)
2304{
2305 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2306
2307 if (flags & ROCKER_OP_FLAG_REMOVE)
2308 return rocker_flow_tbl_del(rocker_port, entry, nowait);
2309 else
2310 return rocker_flow_tbl_add(rocker_port, entry, nowait);
2311}
2312
2313static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2314 int flags, u32 in_lport, u32 in_lport_mask,
2315 enum rocker_of_dpa_table_id goto_tbl)
2316{
2317 struct rocker_flow_tbl_entry *entry;
2318
2319 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2320 if (!entry)
2321 return -ENOMEM;
2322
2323 entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2324 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2325 entry->key.ig_port.in_lport = in_lport;
2326 entry->key.ig_port.in_lport_mask = in_lport_mask;
2327 entry->key.ig_port.goto_tbl = goto_tbl;
2328
2329 return rocker_flow_tbl_do(rocker_port, flags, entry);
2330}
2331
2332static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2333 int flags, u32 in_lport,
2334 __be16 vlan_id, __be16 vlan_id_mask,
2335 enum rocker_of_dpa_table_id goto_tbl,
2336 bool untagged, __be16 new_vlan_id)
2337{
2338 struct rocker_flow_tbl_entry *entry;
2339
2340 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2341 if (!entry)
2342 return -ENOMEM;
2343
2344 entry->key.priority = ROCKER_PRIORITY_VLAN;
2345 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2346 entry->key.vlan.in_lport = in_lport;
2347 entry->key.vlan.vlan_id = vlan_id;
2348 entry->key.vlan.vlan_id_mask = vlan_id_mask;
2349 entry->key.vlan.goto_tbl = goto_tbl;
2350
2351 entry->key.vlan.untagged = untagged;
2352 entry->key.vlan.new_vlan_id = new_vlan_id;
2353
2354 return rocker_flow_tbl_do(rocker_port, flags, entry);
2355}
2356
2357static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2358 u32 in_lport, u32 in_lport_mask,
2359 __be16 eth_type, const u8 *eth_dst,
2360 const u8 *eth_dst_mask, __be16 vlan_id,
2361 __be16 vlan_id_mask, bool copy_to_cpu,
2362 int flags)
2363{
2364 struct rocker_flow_tbl_entry *entry;
2365
2366 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2367 if (!entry)
2368 return -ENOMEM;
2369
2370 if (is_multicast_ether_addr(eth_dst)) {
2371 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2372 entry->key.term_mac.goto_tbl =
2373 ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2374 } else {
2375 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2376 entry->key.term_mac.goto_tbl =
2377 ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2378 }
2379
2380 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2381 entry->key.term_mac.in_lport = in_lport;
2382 entry->key.term_mac.in_lport_mask = in_lport_mask;
2383 entry->key.term_mac.eth_type = eth_type;
2384 ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2385 ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2386 entry->key.term_mac.vlan_id = vlan_id;
2387 entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2388 entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2389
2390 return rocker_flow_tbl_do(rocker_port, flags, entry);
2391}
2392
2393static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2394 int flags,
2395 const u8 *eth_dst, const u8 *eth_dst_mask,
2396 __be16 vlan_id, u32 tunnel_id,
2397 enum rocker_of_dpa_table_id goto_tbl,
2398 u32 group_id, bool copy_to_cpu)
2399{
2400 struct rocker_flow_tbl_entry *entry;
2401 u32 priority;
2402 bool vlan_bridging = !!vlan_id;
2403 bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2404 bool wild = false;
2405
2406 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2407 if (!entry)
2408 return -ENOMEM;
2409
2410 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2411
2412 if (eth_dst) {
2413 entry->key.bridge.has_eth_dst = 1;
2414 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2415 }
2416 if (eth_dst_mask) {
2417 entry->key.bridge.has_eth_dst_mask = 1;
2418 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2419 if (memcmp(eth_dst_mask, ff_mac, ETH_ALEN))
2420 wild = true;
2421 }
2422
2423 priority = ROCKER_PRIORITY_UNKNOWN;
51ace887 2424 if (vlan_bridging && dflt && wild)
9f6bbf7c 2425 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
51ace887 2426 else if (vlan_bridging && dflt && !wild)
9f6bbf7c 2427 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
51ace887 2428 else if (vlan_bridging && !dflt)
9f6bbf7c 2429 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
51ace887 2430 else if (!vlan_bridging && dflt && wild)
9f6bbf7c 2431 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
51ace887 2432 else if (!vlan_bridging && dflt && !wild)
9f6bbf7c 2433 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
51ace887 2434 else if (!vlan_bridging && !dflt)
9f6bbf7c
SF		 2435 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2436
2437 entry->key.priority = priority;
2438 entry->key.bridge.vlan_id = vlan_id;
2439 entry->key.bridge.tunnel_id = tunnel_id;
2440 entry->key.bridge.goto_tbl = goto_tbl;
2441 entry->key.bridge.group_id = group_id;
2442 entry->key.bridge.copy_to_cpu = copy_to_cpu;
2443
2444 return rocker_flow_tbl_do(rocker_port, flags, entry);
2445}
2446
2447static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2448 int flags, u32 in_lport,
2449 u32 in_lport_mask,
2450 const u8 *eth_src, const u8 *eth_src_mask,
2451 const u8 *eth_dst, const u8 *eth_dst_mask,
2452 __be16 eth_type,
2453 __be16 vlan_id, __be16 vlan_id_mask,
2454 u8 ip_proto, u8 ip_proto_mask,
2455 u8 ip_tos, u8 ip_tos_mask,
2456 u32 group_id)
2457{
2458 u32 priority;
2459 struct rocker_flow_tbl_entry *entry;
2460
2461 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2462 if (!entry)
2463 return -ENOMEM;
2464
2465 priority = ROCKER_PRIORITY_ACL_NORMAL;
2466 if (eth_dst && eth_dst_mask) {
2467 if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0)
2468 priority = ROCKER_PRIORITY_ACL_DFLT;
2469 else if (is_link_local_ether_addr(eth_dst))
2470 priority = ROCKER_PRIORITY_ACL_CTRL;
2471 }
2472
2473 entry->key.priority = priority;
2474 entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2475 entry->key.acl.in_lport = in_lport;
2476 entry->key.acl.in_lport_mask = in_lport_mask;
2477
2478 if (eth_src)
2479 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2480 if (eth_src_mask)
2481 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2482 if (eth_dst)
2483 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2484 if (eth_dst_mask)
2485 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2486
2487 entry->key.acl.eth_type = eth_type;
2488 entry->key.acl.vlan_id = vlan_id;
2489 entry->key.acl.vlan_id_mask = vlan_id_mask;
2490 entry->key.acl.ip_proto = ip_proto;
2491 entry->key.acl.ip_proto_mask = ip_proto_mask;
2492 entry->key.acl.ip_tos = ip_tos;
2493 entry->key.acl.ip_tos_mask = ip_tos_mask;
2494 entry->key.acl.group_id = group_id;
2495
2496 return rocker_flow_tbl_do(rocker_port, flags, entry);
2497}
2498
2499static struct rocker_group_tbl_entry *
2500rocker_group_tbl_find(struct rocker *rocker,
2501 struct rocker_group_tbl_entry *match)
2502{
2503 struct rocker_group_tbl_entry *found;
2504
2505 hash_for_each_possible(rocker->group_tbl, found,
2506 entry, match->group_id) {
2507 if (found->group_id == match->group_id)
2508 return found;
2509 }
2510
2511 return NULL;
2512}
2513
2514static void rocker_group_tbl_entry_free(struct rocker_group_tbl_entry *entry)
2515{
2516 switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2517 case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2518 case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2519 kfree(entry->group_ids);
2520 break;
2521 default:
2522 break;
2523 }
2524 kfree(entry);
2525}
2526
2527static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2528 struct rocker_group_tbl_entry *match,
2529 bool nowait)
2530{
2531 struct rocker *rocker = rocker_port->rocker;
2532 struct rocker_group_tbl_entry *found;
2533 unsigned long flags;
2534 int err = 0;
2535
2536 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2537
2538 found = rocker_group_tbl_find(rocker, match);
2539
2540 if (found) {
2541 hash_del(&found->entry);
2542 rocker_group_tbl_entry_free(found);
2543 found = match;
2544 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2545 } else {
2546 found = match;
2547 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2548 }
2549
2550 hash_add(rocker->group_tbl, &found->entry, found->group_id);
2551
2552 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2553
2554 if (found->cmd)
2555 err = rocker_cmd_exec(rocker, rocker_port,
2556 rocker_cmd_group_tbl_add,
2557 found, NULL, NULL, nowait);
2558
2559 return err;
2560}
2561
2562static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2563 struct rocker_group_tbl_entry *match,
2564 bool nowait)
2565{
2566 struct rocker *rocker = rocker_port->rocker;
2567 struct rocker_group_tbl_entry *found;
2568 unsigned long flags;
2569 int err = 0;
2570
2571 spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2572
2573 found = rocker_group_tbl_find(rocker, match);
2574
2575 if (found) {
2576 hash_del(&found->entry);
2577 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2578 }
2579
2580 spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2581
2582 rocker_group_tbl_entry_free(match);
2583
2584 if (found) {
2585 err = rocker_cmd_exec(rocker, rocker_port,
2586 rocker_cmd_group_tbl_del,
2587 found, NULL, NULL, nowait);
2588 rocker_group_tbl_entry_free(found);
2589 }
2590
2591 return err;
2592}
2593
2594static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2595 int flags, struct rocker_group_tbl_entry *entry)
2596{
2597 bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2598
2599 if (flags & ROCKER_OP_FLAG_REMOVE)
2600 return rocker_group_tbl_del(rocker_port, entry, nowait);
2601 else
2602 return rocker_group_tbl_add(rocker_port, entry, nowait);
2603}
2604
2605static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2606 int flags, __be16 vlan_id,
2607 u32 out_lport, int pop_vlan)
2608{
2609 struct rocker_group_tbl_entry *entry;
2610
2611 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2612 if (!entry)
2613 return -ENOMEM;
2614
2615 entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
2616 entry->l2_interface.pop_vlan = pop_vlan;
2617
2618 return rocker_group_tbl_do(rocker_port, flags, entry);
2619}
2620
2621static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2622 int flags, u8 group_count,
2623 u32 *group_ids, u32 group_id)
2624{
2625 struct rocker_group_tbl_entry *entry;
2626
2627 entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2628 if (!entry)
2629 return -ENOMEM;
2630
2631 entry->group_id = group_id;
2632 entry->group_count = group_count;
2633
2634 entry->group_ids = kcalloc(group_count, sizeof(u32),
2635 rocker_op_flags_gfp(flags));
2636 if (!entry->group_ids) {
2637 kfree(entry);
2638 return -ENOMEM;
2639 }
2640 memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2641
2642 return rocker_group_tbl_do(rocker_port, flags, entry);
2643}
2644
2645static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2646 int flags, __be16 vlan_id,
2647 u8 group_count, u32 *group_ids,
2648 u32 group_id)
2649{
2650 return rocker_group_l2_fan_out(rocker_port, flags,
2651 group_count, group_ids,
2652 group_id);
2653}
2654
6c707945
SF		 2655static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
2656 int flags, __be16 vlan_id)
2657{
2658 struct rocker_port *p;
2659 struct rocker *rocker = rocker_port->rocker;
2660 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2661 u32 group_ids[rocker->port_count];
2662 u8 group_count = 0;
2663 int err;
2664 int i;
2665
2666 /* Adjust the flood group for this VLAN. The flood group
2667 * references an L2 interface group for each port in this
2668 * VLAN.
2669 */
2670
2671 for (i = 0; i < rocker->port_count; i++) {
2672 p = rocker->ports[i];
2673 if (!rocker_port_is_bridged(p))
2674 continue;
2675 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
2676 group_ids[group_count++] =
2677 ROCKER_GROUP_L2_INTERFACE(vlan_id,
2678 p->lport);
2679 }
2680 }
2681
2682 /* If there are no bridged ports in this VLAN, we're done */
2683 if (group_count == 0)
2684 return 0;
2685
2686 err = rocker_group_l2_flood(rocker_port, flags, vlan_id,
2687 group_count, group_ids,
2688 group_id);
2689 if (err)
2690 netdev_err(rocker_port->dev,
2691 "Error (%d) port VLAN l2 flood group\n", err);
2692
2693 return err;
2694}
2695
2696static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
2697 int flags, __be16 vlan_id,
2698 bool pop_vlan)
2699{
2700 struct rocker *rocker = rocker_port->rocker;
2701 struct rocker_port *p;
2702 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2703 u32 out_lport;
2704 int ref = 0;
2705 int err;
2706 int i;
2707
2708 /* An L2 interface group for this port in this VLAN, but
2709 * only when port STP state is LEARNING|FORWARDING.
2710 */
2711
2712 if (rocker_port->stp_state == BR_STATE_LEARNING ||
2713 rocker_port->stp_state == BR_STATE_FORWARDING) {
2714 out_lport = rocker_port->lport;
2715 err = rocker_group_l2_interface(rocker_port, flags,
2716 vlan_id, out_lport,
2717 pop_vlan);
2718 if (err) {
2719 netdev_err(rocker_port->dev,
2720 "Error (%d) port VLAN l2 group for lport %d\n",
2721 err, out_lport);
2722 return err;
2723 }
2724 }
2725
2726 /* An L2 interface group for this VLAN to CPU port.
2727 * Add when first port joins this VLAN and destroy when
2728 * last port leaves this VLAN.
2729 */
2730
2731 for (i = 0; i < rocker->port_count; i++) {
2732 p = rocker->ports[i];
2733 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
2734 ref++;
2735 }
2736
2737 if ((!adding || ref != 1) && (adding || ref != 0))
2738 return 0;
2739
2740 out_lport = 0;
2741 err = rocker_group_l2_interface(rocker_port, flags,
2742 vlan_id, out_lport,
2743 pop_vlan);
2744 if (err) {
2745 netdev_err(rocker_port->dev,
2746 "Error (%d) port VLAN l2 group for CPU port\n", err);
2747 return err;
2748 }
2749
2750 return 0;
2751}
2752
9f6bbf7c
SF		 2753static struct rocker_ctrl {
2754 const u8 *eth_dst;
2755 const u8 *eth_dst_mask;
11e6c65a 2756 __be16 eth_type;
9f6bbf7c
SF		 2757 bool acl;
2758 bool bridge;
2759 bool term;
2760 bool copy_to_cpu;
2761} rocker_ctrls[] = {
2762 [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
2763 /* pass link local multicast pkts up to CPU for filtering */
2764 .eth_dst = ll_mac,
2765 .eth_dst_mask = ll_mask,
2766 .acl = true,
2767 },
2768 [ROCKER_CTRL_LOCAL_ARP] = {
2769 /* pass local ARP pkts up to CPU */
2770 .eth_dst = zero_mac,
2771 .eth_dst_mask = zero_mac,
2772 .eth_type = htons(ETH_P_ARP),
2773 .acl = true,
2774 },
2775 [ROCKER_CTRL_IPV4_MCAST] = {
2776 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
2777 .eth_dst = ipv4_mcast,
2778 .eth_dst_mask = ipv4_mask,
2779 .eth_type = htons(ETH_P_IP),
2780 .term = true,
2781 .copy_to_cpu = true,
2782 },
2783 [ROCKER_CTRL_IPV6_MCAST] = {
2784 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
2785 .eth_dst = ipv6_mcast,
2786 .eth_dst_mask = ipv6_mask,
2787 .eth_type = htons(ETH_P_IPV6),
2788 .term = true,
2789 .copy_to_cpu = true,
2790 },
2791 [ROCKER_CTRL_DFLT_BRIDGING] = {
2792 /* flood any pkts on vlan */
2793 .bridge = true,
2794 .copy_to_cpu = true,
2795 },
2796};
2797
2798static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
2799 int flags, struct rocker_ctrl *ctrl,
2800 __be16 vlan_id)
2801{
2802 u32 in_lport = rocker_port->lport;
2803 u32 in_lport_mask = 0xffffffff;
2804 u32 out_lport = 0;
2805 u8 *eth_src = NULL;
2806 u8 *eth_src_mask = NULL;
2807 __be16 vlan_id_mask = htons(0xffff);
2808 u8 ip_proto = 0;
2809 u8 ip_proto_mask = 0;
2810 u8 ip_tos = 0;
2811 u8 ip_tos_mask = 0;
2812 u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
2813 int err;
2814
2815 err = rocker_flow_tbl_acl(rocker_port, flags,
2816 in_lport, in_lport_mask,
2817 eth_src, eth_src_mask,
2818 ctrl->eth_dst, ctrl->eth_dst_mask,
2819 ctrl->eth_type,
2820 vlan_id, vlan_id_mask,
2821 ip_proto, ip_proto_mask,
2822 ip_tos, ip_tos_mask,
2823 group_id);
2824
2825 if (err)
2826 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
2827
2828 return err;
2829}
2830
6c707945
SF		 2831static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
2832 int flags, struct rocker_ctrl *ctrl,
2833 __be16 vlan_id)
2834{
2835 enum rocker_of_dpa_table_id goto_tbl =
2836 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2837 u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2838 u32 tunnel_id = 0;
2839 int err;
2840
2841 if (!rocker_port_is_bridged(rocker_port))
2842 return 0;
2843
2844 err = rocker_flow_tbl_bridge(rocker_port, flags,
2845 ctrl->eth_dst, ctrl->eth_dst_mask,
2846 vlan_id, tunnel_id,
2847 goto_tbl, group_id, ctrl->copy_to_cpu);
2848
2849 if (err)
2850 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
2851
2852 return err;
2853}
2854
9f6bbf7c
SF		 2855static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
2856 int flags, struct rocker_ctrl *ctrl,
2857 __be16 vlan_id)
2858{
2859 u32 in_lport_mask = 0xffffffff;
2860 __be16 vlan_id_mask = htons(0xffff);
2861 int err;
2862
2863 if (ntohs(vlan_id) == 0)
2864 vlan_id = rocker_port->internal_vlan_id;
2865
2866 err = rocker_flow_tbl_term_mac(rocker_port,
2867 rocker_port->lport, in_lport_mask,
2868 ctrl->eth_type, ctrl->eth_dst,
2869 ctrl->eth_dst_mask, vlan_id,
2870 vlan_id_mask, ctrl->copy_to_cpu,
2871 flags);
2872
2873 if (err)
2874 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
2875
2876 return err;
2877}
2878
2879static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, int flags,
2880 struct rocker_ctrl *ctrl, __be16 vlan_id)
2881{
2882 if (ctrl->acl)
2883 return rocker_port_ctrl_vlan_acl(rocker_port, flags,
2884 ctrl, vlan_id);
6c707945
SF		 2885 if (ctrl->bridge)
2886 return rocker_port_ctrl_vlan_bridge(rocker_port, flags,
2887 ctrl, vlan_id);
9f6bbf7c
SF		 2888
2889 if (ctrl->term)
2890 return rocker_port_ctrl_vlan_term(rocker_port, flags,
2891 ctrl, vlan_id);
2892
2893 return -EOPNOTSUPP;
2894}
2895
2896static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
2897 int flags, __be16 vlan_id)
2898{
2899 int err = 0;
2900 int i;
2901
2902 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
2903 if (rocker_port->ctrls[i]) {
2904 err = rocker_port_ctrl_vlan(rocker_port, flags,
2905 &rocker_ctrls[i], vlan_id);
2906 if (err)
2907 return err;
2908 }
2909 }
2910
2911 return err;
2912}
2913
2914static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags,
2915 struct rocker_ctrl *ctrl)
2916{
2917 u16 vid;
2918 int err = 0;
2919
2920 for (vid = 1; vid < VLAN_N_VID; vid++) {
2921 if (!test_bit(vid, rocker_port->vlan_bitmap))
2922 continue;
2923 err = rocker_port_ctrl_vlan(rocker_port, flags,
2924 ctrl, htons(vid));
2925 if (err)
2926 break;
2927 }
2928
2929 return err;
2930}
2931
6c707945
SF		 2932static int rocker_port_vlan(struct rocker_port *rocker_port, int flags,
2933 u16 vid)
2934{
2935 enum rocker_of_dpa_table_id goto_tbl =
2936 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2937 u32 in_lport = rocker_port->lport;
2938 __be16 vlan_id = htons(vid);
2939 __be16 vlan_id_mask = htons(0xffff);
2940 __be16 internal_vlan_id;
2941 bool untagged;
2942 bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2943 int err;
2944
2945 internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
2946
2947 if (adding && test_and_set_bit(ntohs(internal_vlan_id),
2948 rocker_port->vlan_bitmap))
2949 return 0; /* already added */
2950 else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id),
2951 rocker_port->vlan_bitmap))
2952 return 0; /* already removed */
2953
2954 if (adding) {
2955 err = rocker_port_ctrl_vlan_add(rocker_port, flags,
2956 internal_vlan_id);
2957 if (err) {
2958 netdev_err(rocker_port->dev,
2959 "Error (%d) port ctrl vlan add\n", err);
2960 return err;
2961 }
2962 }
2963
2964 err = rocker_port_vlan_l2_groups(rocker_port, flags,
2965 internal_vlan_id, untagged);
2966 if (err) {
2967 netdev_err(rocker_port->dev,
2968 "Error (%d) port VLAN l2 groups\n", err);
2969 return err;
2970 }
2971
2972 err = rocker_port_vlan_flood_group(rocker_port, flags,
2973 internal_vlan_id);
2974 if (err) {
2975 netdev_err(rocker_port->dev,
2976 "Error (%d) port VLAN l2 flood group\n", err);
2977 return err;
2978 }
2979
2980 err = rocker_flow_tbl_vlan(rocker_port, flags,
2981 in_lport, vlan_id, vlan_id_mask,
2982 goto_tbl, untagged, internal_vlan_id);
2983 if (err)
2984 netdev_err(rocker_port->dev,
2985 "Error (%d) port VLAN table\n", err);
2986
2987 return err;
2988}
2989
9f6bbf7c
SF		 2990static int rocker_port_ig_tbl(struct rocker_port *rocker_port, int flags)
2991{
2992 enum rocker_of_dpa_table_id goto_tbl;
2993 u32 in_lport;
2994 u32 in_lport_mask;
2995 int err;
2996
2997 /* Normal Ethernet Frames. Matches pkts from any local physical
2998 * ports. Goto VLAN tbl.
2999 */
3000
3001 in_lport = 0;
3002 in_lport_mask = 0xffff0000;
3003 goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3004
3005 err = rocker_flow_tbl_ig_port(rocker_port, flags,
3006 in_lport, in_lport_mask,
3007 goto_tbl);
3008 if (err)
3009 netdev_err(rocker_port->dev,
3010 "Error (%d) ingress port table entry\n", err);
3011
3012 return err;
3013}
3014
6c707945
SF		 3015struct rocker_fdb_learn_work {
3016 struct work_struct work;
3017 struct net_device *dev;
3018 int flags;
3019 u8 addr[ETH_ALEN];
3020 u16 vid;
3021};
3022
3023static void rocker_port_fdb_learn_work(struct work_struct *work)
3024{
3025 struct rocker_fdb_learn_work *lw =
3026 container_of(work, struct rocker_fdb_learn_work, work);
3027 bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3028 bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3029
51ace887 3030 if (learned && removing)
6c707945 3031 br_fdb_external_learn_del(lw->dev, lw->addr, lw->vid);
51ace887 3032 else if (learned && !removing)
6c707945
SF		 3033 br_fdb_external_learn_add(lw->dev, lw->addr, lw->vid);
3034
3035 kfree(work);
3036}
3037
3038static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3039 int flags, const u8 *addr, __be16 vlan_id)
3040{
3041 struct rocker_fdb_learn_work *lw;
3042 enum rocker_of_dpa_table_id goto_tbl =
3043 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3044 u32 out_lport = rocker_port->lport;
3045 u32 tunnel_id = 0;
3046 u32 group_id = ROCKER_GROUP_NONE;
5111f80c 3047 bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
6c707945
SF		 3048 bool copy_to_cpu = false;
3049 int err;
3050
3051 if (rocker_port_is_bridged(rocker_port))
3052 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
3053
3054 if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3055 err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL,
3056 vlan_id, tunnel_id, goto_tbl,
3057 group_id, copy_to_cpu);
3058 if (err)
3059 return err;
3060 }
3061
5111f80c
SF		 3062 if (!syncing)
3063 return 0;
3064
6c707945
SF		 3065 if (!rocker_port_is_bridged(rocker_port))
3066 return 0;
3067
3068 lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags));
3069 if (!lw)
3070 return -ENOMEM;
3071
3072 INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3073
3074 lw->dev = rocker_port->dev;
3075 lw->flags = flags;
3076 ether_addr_copy(lw->addr, addr);
3077 lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3078
3079 schedule_work(&lw->work);
3080
3081 return 0;
3082}
3083
3084static struct rocker_fdb_tbl_entry *
3085rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3086{
3087 struct rocker_fdb_tbl_entry *found;
3088
3089 hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3090 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3091 return found;
3092
3093 return NULL;
3094}
3095
3096static int rocker_port_fdb(struct rocker_port *rocker_port,
3097 const unsigned char *addr,
3098 __be16 vlan_id, int flags)
3099{
3100 struct rocker *rocker = rocker_port->rocker;
3101 struct rocker_fdb_tbl_entry *fdb;
3102 struct rocker_fdb_tbl_entry *found;
3103 bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3104 unsigned long lock_flags;
3105
3106 fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags));
3107 if (!fdb)
3108 return -ENOMEM;
3109
3110 fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3111 fdb->key.lport = rocker_port->lport;
3112 ether_addr_copy(fdb->key.addr, addr);
3113 fdb->key.vlan_id = vlan_id;
3114 fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3115
3116 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3117
3118 found = rocker_fdb_tbl_find(rocker, fdb);
3119
3120 if (removing && found) {
3121 kfree(fdb);
3122 hash_del(&found->entry);
3123 } else if (!removing && !found) {
3124 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3125 }
3126
3127 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3128
3129 /* Check if adding and already exists, or removing and can't find */
3130 if (!found != !removing) {
3131 kfree(fdb);
3132 if (!found && removing)
3133 return 0;
3134 /* Refreshing existing to update aging timers */
3135 flags |= ROCKER_OP_FLAG_REFRESH;
3136 }
3137
3138 return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id);
3139}
3140
3141static int rocker_port_fdb_flush(struct rocker_port *rocker_port)
3142{
3143 struct rocker *rocker = rocker_port->rocker;
3144 struct rocker_fdb_tbl_entry *found;
3145 unsigned long lock_flags;
3146 int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3147 struct hlist_node *tmp;
3148 int bkt;
3149 int err = 0;
3150
3151 if (rocker_port->stp_state == BR_STATE_LEARNING ||
3152 rocker_port->stp_state == BR_STATE_FORWARDING)
3153 return 0;
3154
3155 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3156
3157 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3158 if (found->key.lport != rocker_port->lport)
3159 continue;
3160 if (!found->learned)
3161 continue;
3162 err = rocker_port_fdb_learn(rocker_port, flags,
3163 found->key.addr,
3164 found->key.vlan_id);
3165 if (err)
3166 goto err_out;
3167 hash_del(&found->entry);
3168 }
3169
3170err_out:
3171 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3172
3173 return err;
3174}
3175
9f6bbf7c
SF		 3176static int rocker_port_router_mac(struct rocker_port *rocker_port,
3177 int flags, __be16 vlan_id)
3178{
3179 u32 in_lport_mask = 0xffffffff;
3180 __be16 eth_type;
3181 const u8 *dst_mac_mask = ff_mac;
3182 __be16 vlan_id_mask = htons(0xffff);
3183 bool copy_to_cpu = false;
3184 int err;
3185
3186 if (ntohs(vlan_id) == 0)
3187 vlan_id = rocker_port->internal_vlan_id;
3188
3189 eth_type = htons(ETH_P_IP);
3190 err = rocker_flow_tbl_term_mac(rocker_port,
3191 rocker_port->lport, in_lport_mask,
3192 eth_type, rocker_port->dev->dev_addr,
3193 dst_mac_mask, vlan_id, vlan_id_mask,
3194 copy_to_cpu, flags);
3195 if (err)
3196 return err;
3197
3198 eth_type = htons(ETH_P_IPV6);
3199 err = rocker_flow_tbl_term_mac(rocker_port,
3200 rocker_port->lport, in_lport_mask,
3201 eth_type, rocker_port->dev->dev_addr,
3202 dst_mac_mask, vlan_id, vlan_id_mask,
3203 copy_to_cpu, flags);
3204
3205 return err;
3206}
3207
6c707945
SF		 3208static int rocker_port_fwding(struct rocker_port *rocker_port)
3209{
3210 bool pop_vlan;
3211 u32 out_lport;
3212 __be16 vlan_id;
3213 u16 vid;
3214 int flags = ROCKER_OP_FLAG_NOWAIT;
3215 int err;
3216
3217 /* Port will be forwarding-enabled if its STP state is LEARNING
3218 * or FORWARDING. Traffic from CPU can still egress, regardless of
3219 * port STP state. Use L2 interface group on port VLANs as a way
3220 * to toggle port forwarding: if forwarding is disabled, L2
3221 * interface group will not exist.
3222 */
3223
3224 if (rocker_port->stp_state != BR_STATE_LEARNING &&
3225 rocker_port->stp_state != BR_STATE_FORWARDING)
3226 flags |= ROCKER_OP_FLAG_REMOVE;
3227
3228 out_lport = rocker_port->lport;
3229 for (vid = 1; vid < VLAN_N_VID; vid++) {
3230 if (!test_bit(vid, rocker_port->vlan_bitmap))
3231 continue;
3232 vlan_id = htons(vid);
3233 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3234 err = rocker_group_l2_interface(rocker_port, flags,
3235 vlan_id, out_lport,
3236 pop_vlan);
3237 if (err) {
3238 netdev_err(rocker_port->dev,
3239 "Error (%d) port VLAN l2 group for lport %d\n",
3240 err, out_lport);
3241 return err;
3242 }
3243 }
3244
3245 return 0;
3246}
3247
3248static int rocker_port_stp_update(struct rocker_port *rocker_port, u8 state)
3249{
3250 bool want[ROCKER_CTRL_MAX] = { 0, };
3251 int flags;
3252 int err;
3253 int i;
3254
3255 if (rocker_port->stp_state == state)
3256 return 0;
3257
3258 rocker_port->stp_state = state;
3259
3260 switch (state) {
3261 case BR_STATE_DISABLED:
3262 /* port is completely disabled */
3263 break;
3264 case BR_STATE_LISTENING:
3265 case BR_STATE_BLOCKING:
3266 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3267 break;
3268 case BR_STATE_LEARNING:
3269 case BR_STATE_FORWARDING:
3270 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3271 want[ROCKER_CTRL_IPV4_MCAST] = true;
3272 want[ROCKER_CTRL_IPV6_MCAST] = true;
3273 if (rocker_port_is_bridged(rocker_port))
3274 want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3275 else
3276 want[ROCKER_CTRL_LOCAL_ARP] = true;
3277 break;
3278 }
3279
3280 for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3281 if (want[i] != rocker_port->ctrls[i]) {
3282 flags = ROCKER_OP_FLAG_NOWAIT |
3283 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3284 err = rocker_port_ctrl(rocker_port, flags,
3285 &rocker_ctrls[i]);
3286 if (err)
3287 return err;
3288 rocker_port->ctrls[i] = want[i];
3289 }
3290 }
3291
3292 err = rocker_port_fdb_flush(rocker_port);
3293 if (err)
3294 return err;
3295
3296 return rocker_port_fwding(rocker_port);
3297}
3298
9f6bbf7c
SF		 3299static struct rocker_internal_vlan_tbl_entry *
3300rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3301{
3302 struct rocker_internal_vlan_tbl_entry *found;
3303
3304 hash_for_each_possible(rocker->internal_vlan_tbl, found,
3305 entry, ifindex) {
3306 if (found->ifindex == ifindex)
3307 return found;
3308 }
3309
3310 return NULL;
3311}
3312
3313static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3314 int ifindex)
3315{
3316 struct rocker *rocker = rocker_port->rocker;
3317 struct rocker_internal_vlan_tbl_entry *entry;
3318 struct rocker_internal_vlan_tbl_entry *found;
3319 unsigned long lock_flags;
3320 int i;
3321
3322 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3323 if (!entry)
3324 return 0;
3325
3326 entry->ifindex = ifindex;
3327
3328 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3329
3330 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3331 if (found) {
3332 kfree(entry);
3333 goto found;
3334 }
3335
3336 found = entry;
3337 hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3338
3339 for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3340 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3341 continue;
3342 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3343 goto found;
3344 }
3345
3346 netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3347
3348found:
3349 found->ref_count++;
3350 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3351
3352 return found->vlan_id;
3353}
3354
3355static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3356 int ifindex)
3357{
3358 struct rocker *rocker = rocker_port->rocker;
3359 struct rocker_internal_vlan_tbl_entry *found;
3360 unsigned long lock_flags;
3361 unsigned long bit;
3362
3363 spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3364
3365 found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3366 if (!found) {
3367 netdev_err(rocker_port->dev,
3368 "ifindex (%d) not found in internal VLAN tbl\n",
3369 ifindex);
3370 goto not_found;
3371 }
3372
3373 if (--found->ref_count <= 0) {
3374 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3375 clear_bit(bit, rocker->internal_vlan_bitmap);
3376 hash_del(&found->entry);
3377 kfree(found);
3378 }
3379
3380not_found:
3381 spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3382}
3383
4b8ac966
JP		 3384/*****************
3385 * Net device ops
3386 *****************/
3387
3388static int rocker_port_open(struct net_device *dev)
3389{
3390 struct rocker_port *rocker_port = netdev_priv(dev);
6c707945
SF		 3391 u8 stp_state = rocker_port_is_bridged(rocker_port) ?
3392 BR_STATE_BLOCKING : BR_STATE_FORWARDING;
4b8ac966
JP		 3393 int err;
3394
3395 err = rocker_port_dma_rings_init(rocker_port);
3396 if (err)
3397 return err;
3398
3399 err = request_irq(rocker_msix_tx_vector(rocker_port),
3400 rocker_tx_irq_handler, 0,
3401 rocker_driver_name, rocker_port);
3402 if (err) {
3403 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3404 goto err_request_tx_irq;
3405 }
3406
3407 err = request_irq(rocker_msix_rx_vector(rocker_port),
3408 rocker_rx_irq_handler, 0,
3409 rocker_driver_name, rocker_port);
3410 if (err) {
3411 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3412 goto err_request_rx_irq;
3413 }
3414
6c707945
SF		 3415 err = rocker_port_stp_update(rocker_port, stp_state);
3416 if (err)
3417 goto err_stp_update;
3418
4b8ac966
JP		 3419 napi_enable(&rocker_port->napi_tx);
3420 napi_enable(&rocker_port->napi_rx);
3421 rocker_port_set_enable(rocker_port, true);
3422 netif_start_queue(dev);
3423 return 0;
3424
6c707945
SF		 3425err_stp_update:
3426 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
4b8ac966
JP		 3427err_request_rx_irq:
3428 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3429err_request_tx_irq:
3430 rocker_port_dma_rings_fini(rocker_port);
3431 return err;
3432}
3433
3434static int rocker_port_stop(struct net_device *dev)
3435{
3436 struct rocker_port *rocker_port = netdev_priv(dev);
3437
3438 netif_stop_queue(dev);
3439 rocker_port_set_enable(rocker_port, false);
3440 napi_disable(&rocker_port->napi_rx);
3441 napi_disable(&rocker_port->napi_tx);
6c707945 3442 rocker_port_stp_update(rocker_port, BR_STATE_DISABLED);
4b8ac966
JP		 3443 free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3444 free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3445 rocker_port_dma_rings_fini(rocker_port);
3446
3447 return 0;
3448}
3449
3450static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
3451 struct rocker_desc_info *desc_info)
3452{
3453 struct rocker *rocker = rocker_port->rocker;
3454 struct pci_dev *pdev = rocker->pdev;
3455 struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
3456 struct rocker_tlv *attr;
3457 int rem;
3458
3459 rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
3460 if (!attrs[ROCKER_TLV_TX_FRAGS])
3461 return;
3462 rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
3463 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
3464 dma_addr_t dma_handle;
3465 size_t len;
3466
3467 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
3468 continue;
3469 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
3470 attr);
3471 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
3472 !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
3473 continue;
3474 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
3475 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
3476 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
3477 }
3478}
3479
3480static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
3481 struct rocker_desc_info *desc_info,
3482 char *buf, size_t buf_len)
3483{
3484 struct rocker *rocker = rocker_port->rocker;
3485 struct pci_dev *pdev = rocker->pdev;
3486 dma_addr_t dma_handle;
3487 struct rocker_tlv *frag;
3488
3489 dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
3490 if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
3491 if (net_ratelimit())
3492 netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
3493 return -EIO;
3494 }
3495 frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
3496 if (!frag)
3497 goto unmap_frag;
3498 if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
3499 dma_handle))
3500 goto nest_cancel;
3501 if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
3502 buf_len))
3503 goto nest_cancel;
3504 rocker_tlv_nest_end(desc_info, frag);
3505 return 0;
3506
3507nest_cancel:
3508 rocker_tlv_nest_cancel(desc_info, frag);
3509unmap_frag:
3510 pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
3511 return -EMSGSIZE;
3512}
3513
3514static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
3515{
3516 struct rocker_port *rocker_port = netdev_priv(dev);
3517 struct rocker *rocker = rocker_port->rocker;
3518 struct rocker_desc_info *desc_info;
3519 struct rocker_tlv *frags;
3520 int i;
3521 int err;
3522
3523 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3524 if (unlikely(!desc_info)) {
3525 if (net_ratelimit())
3526 netdev_err(dev, "tx ring full when queue awake\n");
3527 return NETDEV_TX_BUSY;
3528 }
3529
3530 rocker_desc_cookie_ptr_set(desc_info, skb);
3531
3532 frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
3533 if (!frags)
3534 goto out;
3535 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3536 skb->data, skb_headlen(skb));
3537 if (err)
3538 goto nest_cancel;
3539 if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
3540 goto nest_cancel;
3541
3542 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3543 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3544
3545 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3546 skb_frag_address(frag),
3547 skb_frag_size(frag));
3548 if (err)
3549 goto unmap_frags;
3550 }
3551 rocker_tlv_nest_end(desc_info, frags);
3552
3553 rocker_desc_gen_clear(desc_info);
3554 rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
3555
3556 desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3557 if (!desc_info)
3558 netif_stop_queue(dev);
3559
3560 return NETDEV_TX_OK;
3561
3562unmap_frags:
3563 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3564nest_cancel:
3565 rocker_tlv_nest_cancel(desc_info, frags);
3566out:
3567 dev_kfree_skb(skb);
3568 return NETDEV_TX_OK;
3569}
3570
3571static int rocker_port_set_mac_address(struct net_device *dev, void *p)
3572{
3573 struct sockaddr *addr = p;
3574 struct rocker_port *rocker_port = netdev_priv(dev);
3575 int err;
3576
3577 if (!is_valid_ether_addr(addr->sa_data))
3578 return -EADDRNOTAVAIL;
3579
3580 err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
3581 if (err)
3582 return err;
3583 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3584 return 0;
3585}
3586
6c707945
SF		 3587static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
3588 __be16 proto, u16 vid)
3589{
3590 struct rocker_port *rocker_port = netdev_priv(dev);
3591 int err;
3592
3593 err = rocker_port_vlan(rocker_port, 0, vid);
3594 if (err)
3595 return err;
3596
3597 return rocker_port_router_mac(rocker_port, 0, htons(vid));
3598}
3599
3600static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
3601 __be16 proto, u16 vid)
3602{
3603 struct rocker_port *rocker_port = netdev_priv(dev);
3604 int err;
3605
3606 err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE,
3607 htons(vid));
3608 if (err)
3609 return err;
3610
3611 return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid);
3612}
3613
3614static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
3615 struct net_device *dev,
3616 const unsigned char *addr, u16 vid,
3617 u16 nlm_flags)
3618{
3619 struct rocker_port *rocker_port = netdev_priv(dev);
3620 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3621 int flags = 0;
3622
3623 if (!rocker_port_is_bridged(rocker_port))
3624 return -EINVAL;
3625
3626 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3627}
3628
3629static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
3630 struct net_device *dev,
3631 const unsigned char *addr, u16 vid)
3632{
3633 struct rocker_port *rocker_port = netdev_priv(dev);
3634 __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3635 int flags = ROCKER_OP_FLAG_REMOVE;
3636
3637 if (!rocker_port_is_bridged(rocker_port))
3638 return -EINVAL;
3639
3640 return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3641}
3642
ce76ca68
JP		 3643static int rocker_fdb_fill_info(struct sk_buff *skb,
3644 struct rocker_port *rocker_port,
3645 const unsigned char *addr, u16 vid,
3646 u32 portid, u32 seq, int type,
3647 unsigned int flags)
3648{
3649 struct nlmsghdr *nlh;
3650 struct ndmsg *ndm;
3651
3652 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
3653 if (!nlh)
3654 return -EMSGSIZE;
3655
3656 ndm = nlmsg_data(nlh);
3657 ndm->ndm_family = AF_BRIDGE;
3658 ndm->ndm_pad1 = 0;
3659 ndm->ndm_pad2 = 0;
3660 ndm->ndm_flags = NTF_SELF;
3661 ndm->ndm_type = 0;
3662 ndm->ndm_ifindex = rocker_port->dev->ifindex;
3663 ndm->ndm_state = NUD_REACHABLE;
3664
3665 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
3666 goto nla_put_failure;
3667
3668 if (vid && nla_put_u16(skb, NDA_VLAN, vid))
3669 goto nla_put_failure;
3670
3671 return nlmsg_end(skb, nlh);
3672
3673nla_put_failure:
3674 nlmsg_cancel(skb, nlh);
3675 return -EMSGSIZE;
3676}
3677
3678static int rocker_port_fdb_dump(struct sk_buff *skb,
3679 struct netlink_callback *cb,
3680 struct net_device *dev,
3681 struct net_device *filter_dev,
3682 int idx)
3683{
3684 struct rocker_port *rocker_port = netdev_priv(dev);
3685 struct rocker *rocker = rocker_port->rocker;
3686 struct rocker_fdb_tbl_entry *found;
3687 struct hlist_node *tmp;
3688 int bkt;
3689 unsigned long lock_flags;
3690 const unsigned char *addr;
3691 u16 vid;
3692 int err;
3693
3694 spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3695 hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3696 if (found->key.lport != rocker_port->lport)
3697 continue;
3698 if (idx < cb->args[0])
3699 goto skip;
3700 addr = found->key.addr;
3701 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
3702 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
3703 NETLINK_CB(cb->skb).portid,
3704 cb->nlh->nlmsg_seq,
3705 RTM_NEWNEIGH, NLM_F_MULTI);
3706 if (err < 0)
3707 break;
3708skip:
3709 ++idx;
3710 }
3711 spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3712 return idx;
3713}
3714
5111f80c
SF		 3715static int rocker_port_bridge_setlink(struct net_device *dev,
3716 struct nlmsghdr *nlh)
3717{
3718 struct rocker_port *rocker_port = netdev_priv(dev);
3719 struct nlattr *protinfo;
3720 struct nlattr *afspec;
3721 struct nlattr *attr;
3722 u16 mode;
3723 int err;
3724
3725 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
3726 IFLA_PROTINFO);
3727 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
3728
3729 if (afspec) {
3730 attr = nla_find_nested(afspec, IFLA_BRIDGE_MODE);
3731 if (attr) {
e7560582
TG		 3732 if (nla_len(attr) < sizeof(mode))
3733 return -EINVAL;
3734
5111f80c
SF		 3735 mode = nla_get_u16(attr);
3736 if (mode != BRIDGE_MODE_SWDEV)
3737 return -EINVAL;
3738 }
3739 }
3740
3741 if (protinfo) {
3742 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING);
3743 if (attr) {
e7560582
TG		 3744 if (nla_len(attr) < sizeof(u8))
3745 return -EINVAL;
3746
5111f80c
SF		 3747 if (nla_get_u8(attr))
3748 rocker_port->brport_flags |= BR_LEARNING;
3749 else
3750 rocker_port->brport_flags &= ~BR_LEARNING;
3751 err = rocker_port_set_learning(rocker_port);
3752 if (err)
3753 return err;
3754 }
3755 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC);
3756 if (attr) {
e7560582
TG		 3757 if (nla_len(attr) < sizeof(u8))
3758 return -EINVAL;
3759
5111f80c
SF		 3760 if (nla_get_u8(attr))
3761 rocker_port->brport_flags |= BR_LEARNING_SYNC;
3762 else
3763 rocker_port->brport_flags &= ~BR_LEARNING_SYNC;
3764 }
3765 }
3766
3767 return 0;
3768}
3769
3770static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
3771 struct net_device *dev,
3772 u32 filter_mask)
3773{
3774 struct rocker_port *rocker_port = netdev_priv(dev);
3775 u16 mode = BRIDGE_MODE_SWDEV;
3776 u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
3777
3778 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
3779 rocker_port->brport_flags, mask);
3780}
3781
4b8ac966
JP		 3782static int rocker_port_switch_parent_id_get(struct net_device *dev,
3783 struct netdev_phys_item_id *psid)
3784{
3785 struct rocker_port *rocker_port = netdev_priv(dev);
3786 struct rocker *rocker = rocker_port->rocker;
3787
3788 psid->id_len = sizeof(rocker->hw.id);
3789 memcpy(&psid->id, &rocker->hw.id, psid->id_len);
3790 return 0;
3791}
3792
6c707945
SF		 3793static int rocker_port_switch_port_stp_update(struct net_device *dev, u8 state)
3794{
3795 struct rocker_port *rocker_port = netdev_priv(dev);
3796
3797 return rocker_port_stp_update(rocker_port, state);
3798}
3799
4b8ac966
JP		 3800static const struct net_device_ops rocker_port_netdev_ops = {
3801 .ndo_open = rocker_port_open,
3802 .ndo_stop = rocker_port_stop,
3803 .ndo_start_xmit = rocker_port_xmit,
3804 .ndo_set_mac_address = rocker_port_set_mac_address,
6c707945
SF		 3805 .ndo_vlan_rx_add_vid = rocker_port_vlan_rx_add_vid,
3806 .ndo_vlan_rx_kill_vid = rocker_port_vlan_rx_kill_vid,
3807 .ndo_fdb_add = rocker_port_fdb_add,
3808 .ndo_fdb_del = rocker_port_fdb_del,
ce76ca68 3809 .ndo_fdb_dump = rocker_port_fdb_dump,
5111f80c
SF		 3810 .ndo_bridge_setlink = rocker_port_bridge_setlink,
3811 .ndo_bridge_getlink = rocker_port_bridge_getlink,
4b8ac966 3812 .ndo_switch_parent_id_get = rocker_port_switch_parent_id_get,
6c707945 3813 .ndo_switch_port_stp_update = rocker_port_switch_port_stp_update,
4b8ac966
JP		 3814};
3815
3816/********************
3817 * ethtool interface
3818 ********************/
3819
3820static int rocker_port_get_settings(struct net_device *dev,
3821 struct ethtool_cmd *ecmd)
3822{
3823 struct rocker_port *rocker_port = netdev_priv(dev);
3824
3825 return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
3826}
3827
3828static int rocker_port_set_settings(struct net_device *dev,
3829 struct ethtool_cmd *ecmd)
3830{
3831 struct rocker_port *rocker_port = netdev_priv(dev);
3832
3833 return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
3834}
3835
3836static void rocker_port_get_drvinfo(struct net_device *dev,
3837 struct ethtool_drvinfo *drvinfo)
3838{
3839 strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
3840 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
3841}
3842
3843static const struct ethtool_ops rocker_port_ethtool_ops = {
3844 .get_settings = rocker_port_get_settings,
3845 .set_settings = rocker_port_set_settings,
3846 .get_drvinfo = rocker_port_get_drvinfo,
3847 .get_link = ethtool_op_get_link,
3848};
3849
3850/*****************
3851 * NAPI interface
3852 *****************/
3853
3854static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
3855{
3856 return container_of(napi, struct rocker_port, napi_tx);
3857}
3858
3859static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
3860{
3861 struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
3862 struct rocker *rocker = rocker_port->rocker;
3863 struct rocker_desc_info *desc_info;
3864 u32 credits = 0;
3865 int err;
3866
3867 /* Cleanup tx descriptors */
3868 while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
3869 err = rocker_desc_err(desc_info);
3870 if (err && net_ratelimit())
3871 netdev_err(rocker_port->dev, "tx desc received with err %d\n",
3872 err);
3873 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3874 dev_kfree_skb_any(rocker_desc_cookie_ptr_get(desc_info));
3875 credits++;
3876 }
3877
3878 if (credits && netif_queue_stopped(rocker_port->dev))
3879 netif_wake_queue(rocker_port->dev);
3880
3881 napi_complete(napi);
3882 rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
3883
3884 return 0;
3885}
3886
3887static int rocker_port_rx_proc(struct rocker *rocker,
3888 struct rocker_port *rocker_port,
3889 struct rocker_desc_info *desc_info)
3890{
3891 struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
3892 struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
3893 size_t rx_len;
3894
3895 if (!skb)
3896 return -ENOENT;
3897
3898 rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
3899 if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
3900 return -EINVAL;
3901
3902 rocker_dma_rx_ring_skb_unmap(rocker, attrs);
3903
3904 rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
3905 skb_put(skb, rx_len);
3906 skb->protocol = eth_type_trans(skb, rocker_port->dev);
3907 netif_receive_skb(skb);
3908
3909 return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
3910}
3911
3912static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
3913{
3914 return container_of(napi, struct rocker_port, napi_rx);
3915}
3916
3917static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
3918{
3919 struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
3920 struct rocker *rocker = rocker_port->rocker;
3921 struct rocker_desc_info *desc_info;
3922 u32 credits = 0;
3923 int err;
3924
3925 /* Process rx descriptors */
3926 while (credits < budget &&
3927 (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
3928 err = rocker_desc_err(desc_info);
3929 if (err) {
3930 if (net_ratelimit())
3931 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
3932 err);
3933 } else {
3934 err = rocker_port_rx_proc(rocker, rocker_port,
3935 desc_info);
3936 if (err && net_ratelimit())
3937 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
3938 err);
3939 }
3940 rocker_desc_gen_clear(desc_info);
3941 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
3942 credits++;
3943 }
3944
3945 if (credits < budget)
3946 napi_complete(napi);
3947
3948 rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
3949
3950 return credits;
3951}
3952
3953/*****************
3954 * PCI driver ops
3955 *****************/
3956
3957static void rocker_carrier_init(struct rocker_port *rocker_port)
3958{
3959 struct rocker *rocker = rocker_port->rocker;
3960 u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
3961 bool link_up;
3962
3963 link_up = link_status & (1 << rocker_port->lport);
3964 if (link_up)
3965 netif_carrier_on(rocker_port->dev);
3966 else
3967 netif_carrier_off(rocker_port->dev);
3968}
3969
3970static void rocker_remove_ports(struct rocker *rocker)
3971{
9f6bbf7c 3972 struct rocker_port *rocker_port;
4b8ac966
JP		 3973 int i;
3974
9f6bbf7c
SF		 3975 for (i = 0; i < rocker->port_count; i++) {
3976 rocker_port = rocker->ports[i];
3977 rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE);
3978 unregister_netdev(rocker_port->dev);
3979 }
4b8ac966
JP		 3980 kfree(rocker->ports);
3981}
3982
3983static void rocker_port_dev_addr_init(struct rocker *rocker,
3984 struct rocker_port *rocker_port)
3985{
3986 struct pci_dev *pdev = rocker->pdev;
3987 int err;
3988
3989 err = rocker_cmd_get_port_settings_macaddr(rocker_port,
3990 rocker_port->dev->dev_addr);
3991 if (err) {
3992 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
3993 eth_hw_addr_random(rocker_port->dev);
3994 }
3995}
3996
3997static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
3998{
3999 struct pci_dev *pdev = rocker->pdev;
4000 struct rocker_port *rocker_port;
4001 struct net_device *dev;
4002 int err;
4003
4004 dev = alloc_etherdev(sizeof(struct rocker_port));
4005 if (!dev)
4006 return -ENOMEM;
4007 rocker_port = netdev_priv(dev);
4008 rocker_port->dev = dev;
4009 rocker_port->rocker = rocker;
4010 rocker_port->port_number = port_number;
4011 rocker_port->lport = port_number + 1;
5111f80c 4012 rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4b8ac966
JP		 4013
4014 rocker_port_dev_addr_init(rocker, rocker_port);
4015 dev->netdev_ops = &rocker_port_netdev_ops;
4016 dev->ethtool_ops = &rocker_port_ethtool_ops;
4017 netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4018 NAPI_POLL_WEIGHT);
4019 netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4020 NAPI_POLL_WEIGHT);
4021 rocker_carrier_init(rocker_port);
4022
4023 dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
4024
4025 err = register_netdev(dev);
4026 if (err) {
4027 dev_err(&pdev->dev, "register_netdev failed\n");
4028 goto err_register_netdev;
4029 }
4030 rocker->ports[port_number] = rocker_port;
4031
5111f80c
SF		 4032 rocker_port_set_learning(rocker_port);
4033
9f6bbf7c
SF		 4034 rocker_port->internal_vlan_id =
4035 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4036 err = rocker_port_ig_tbl(rocker_port, 0);
4037 if (err) {
4038 dev_err(&pdev->dev, "install ig port table failed\n");
4039 goto err_port_ig_tbl;
4040 }
4041
4b8ac966
JP		 4042 return 0;
4043
9f6bbf7c
SF		 4044err_port_ig_tbl:
4045 unregister_netdev(dev);
4b8ac966
JP		 4046err_register_netdev:
4047 free_netdev(dev);
4048 return err;
4049}
4050
4051static int rocker_probe_ports(struct rocker *rocker)
4052{
4053 int i;
4054 size_t alloc_size;
4055 int err;
4056
4057 alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4058 rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
4059 for (i = 0; i < rocker->port_count; i++) {
4060 err = rocker_probe_port(rocker, i);
4061 if (err)
4062 goto remove_ports;
4063 }
4064 return 0;
4065
4066remove_ports:
4067 rocker_remove_ports(rocker);
4068 return err;
4069}
4070
4071static int rocker_msix_init(struct rocker *rocker)
4072{
4073 struct pci_dev *pdev = rocker->pdev;
4074 int msix_entries;
4075 int i;
4076 int err;
4077
4078 msix_entries = pci_msix_vec_count(pdev);
4079 if (msix_entries < 0)
4080 return msix_entries;
4081
4082 if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4083 return -EINVAL;
4084
4085 rocker->msix_entries = kmalloc_array(msix_entries,
4086 sizeof(struct msix_entry),
4087 GFP_KERNEL);
4088 if (!rocker->msix_entries)
4089 return -ENOMEM;
4090
4091 for (i = 0; i < msix_entries; i++)
4092 rocker->msix_entries[i].entry = i;
4093
4094 err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4095 if (err < 0)
4096 goto err_enable_msix;
4097
4098 return 0;
4099
4100err_enable_msix:
4101 kfree(rocker->msix_entries);
4102 return err;
4103}
4104
4105static void rocker_msix_fini(struct rocker *rocker)
4106{
4107 pci_disable_msix(rocker->pdev);
4108 kfree(rocker->msix_entries);
4109}
4110
4111static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4112{
4113 struct rocker *rocker;
4114 int err;
4115
4116 rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4117 if (!rocker)
4118 return -ENOMEM;
4119
4120 err = pci_enable_device(pdev);
4121 if (err) {
4122 dev_err(&pdev->dev, "pci_enable_device failed\n");
4123 goto err_pci_enable_device;
4124 }
4125
4126 err = pci_request_regions(pdev, rocker_driver_name);
4127 if (err) {
4128 dev_err(&pdev->dev, "pci_request_regions failed\n");
4129 goto err_pci_request_regions;
4130 }
4131
4132 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4133 if (!err) {
4134 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4135 if (err) {
4136 dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4137 goto err_pci_set_dma_mask;
4138 }
4139 } else {
4140 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4141 if (err) {
4142 dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
4143 goto err_pci_set_dma_mask;
4144 }
4145 }
4146
4147 if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
4148 dev_err(&pdev->dev, "invalid PCI region size\n");
4149 goto err_pci_resource_len_check;
4150 }
4151
4152 rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
4153 pci_resource_len(pdev, 0));
4154 if (!rocker->hw_addr) {
4155 dev_err(&pdev->dev, "ioremap failed\n");
4156 err = -EIO;
4157 goto err_ioremap;
4158 }
4159 pci_set_master(pdev);
4160
4161 rocker->pdev = pdev;
4162 pci_set_drvdata(pdev, rocker);
4163
4164 rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
4165
4166 err = rocker_msix_init(rocker);
4167 if (err) {
4168 dev_err(&pdev->dev, "MSI-X init failed\n");
4169 goto err_msix_init;
4170 }
4171
4172 err = rocker_basic_hw_test(rocker);
4173 if (err) {
4174 dev_err(&pdev->dev, "basic hw test failed\n");
4175 goto err_basic_hw_test;
4176 }
4177
4178 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4179
4180 err = rocker_dma_rings_init(rocker);
4181 if (err)
4182 goto err_dma_rings_init;
4183
4184 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
4185 rocker_cmd_irq_handler, 0,
4186 rocker_driver_name, rocker);
4187 if (err) {
4188 dev_err(&pdev->dev, "cannot assign cmd irq\n");
4189 goto err_request_cmd_irq;
4190 }
4191
4192 err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
4193 rocker_event_irq_handler, 0,
4194 rocker_driver_name, rocker);
4195 if (err) {
4196 dev_err(&pdev->dev, "cannot assign event irq\n");
4197 goto err_request_event_irq;
4198 }
4199
4200 rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
4201
9f6bbf7c
SF		 4202 err = rocker_init_tbls(rocker);
4203 if (err) {
4204 dev_err(&pdev->dev, "cannot init rocker tables\n");
4205 goto err_init_tbls;
4206 }
4207
4b8ac966
JP		 4208 err = rocker_probe_ports(rocker);
4209 if (err) {
4210 dev_err(&pdev->dev, "failed to probe ports\n");
4211 goto err_probe_ports;
4212 }
4213
4214 dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
4215
4216 return 0;
4217
4218err_probe_ports:
9f6bbf7c
SF		 4219 rocker_free_tbls(rocker);
4220err_init_tbls:
4b8ac966
JP		 4221 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4222err_request_event_irq:
4223 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4224err_request_cmd_irq:
4225 rocker_dma_rings_fini(rocker);
4226err_dma_rings_init:
4227err_basic_hw_test:
4228 rocker_msix_fini(rocker);
4229err_msix_init:
4230 iounmap(rocker->hw_addr);
4231err_ioremap:
4232err_pci_resource_len_check:
4233err_pci_set_dma_mask:
4234 pci_release_regions(pdev);
4235err_pci_request_regions:
4236 pci_disable_device(pdev);
4237err_pci_enable_device:
4238 kfree(rocker);
4239 return err;
4240}
4241
4242static void rocker_remove(struct pci_dev *pdev)
4243{
4244 struct rocker *rocker = pci_get_drvdata(pdev);
4245
9f6bbf7c 4246 rocker_free_tbls(rocker);
4b8ac966
JP		 4247 rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4248 rocker_remove_ports(rocker);
4249 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4250 free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4251 rocker_dma_rings_fini(rocker);
4252 rocker_msix_fini(rocker);
4253 iounmap(rocker->hw_addr);
4254 pci_release_regions(rocker->pdev);
4255 pci_disable_device(rocker->pdev);
4256 kfree(rocker);
4257}
4258
4259static struct pci_driver rocker_pci_driver = {
4260 .name = rocker_driver_name,
4261 .id_table = rocker_pci_id_table,
4262 .probe = rocker_probe,
4263 .remove = rocker_remove,
4264};
4265
6c707945
SF		 4266/************************************
4267 * Net device notifier event handler
4268 ************************************/
4269
4270static bool rocker_port_dev_check(struct net_device *dev)
4271{
4272 return dev->netdev_ops == &rocker_port_netdev_ops;
4273}
4274
4275static int rocker_port_bridge_join(struct rocker_port *rocker_port,
4276 struct net_device *bridge)
4277{
4278 int err;
4279
4280 rocker_port_internal_vlan_id_put(rocker_port,
4281 rocker_port->dev->ifindex);
4282
4283 rocker_port->bridge_dev = bridge;
4284
4285 /* Use bridge internal VLAN ID for untagged pkts */
4286 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4287 if (err)
4288 return err;
4289 rocker_port->internal_vlan_id =
4290 rocker_port_internal_vlan_id_get(rocker_port,
4291 bridge->ifindex);
4292 err = rocker_port_vlan(rocker_port, 0, 0);
4293
4294 return err;
4295}
4296
4297static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
4298{
4299 int err;
4300
4301 rocker_port_internal_vlan_id_put(rocker_port,
4302 rocker_port->bridge_dev->ifindex);
4303
4304 rocker_port->bridge_dev = NULL;
4305
4306 /* Use port internal VLAN ID for untagged pkts */
4307 err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4308 if (err)
4309 return err;
4310 rocker_port->internal_vlan_id =
4311 rocker_port_internal_vlan_id_get(rocker_port,
4312 rocker_port->dev->ifindex);
4313 err = rocker_port_vlan(rocker_port, 0, 0);
4314
4315 return err;
4316}
4317
4318static int rocker_port_master_changed(struct net_device *dev)
4319{
4320 struct rocker_port *rocker_port = netdev_priv(dev);
4321 struct net_device *master = netdev_master_upper_dev_get(dev);
4322 int err = 0;
4323
4324 if (master && master->rtnl_link_ops &&
4325 !strcmp(master->rtnl_link_ops->kind, "bridge"))
4326 err = rocker_port_bridge_join(rocker_port, master);
4327 else
4328 err = rocker_port_bridge_leave(rocker_port);
4329
4330 return err;
4331}
4332
4333static int rocker_netdevice_event(struct notifier_block *unused,
4334 unsigned long event, void *ptr)
4335{
4336 struct net_device *dev;
4337 int err;
4338
4339 switch (event) {
4340 case NETDEV_CHANGEUPPER:
4341 dev = netdev_notifier_info_to_dev(ptr);
4342 if (!rocker_port_dev_check(dev))
4343 return NOTIFY_DONE;
4344 err = rocker_port_master_changed(dev);
4345 if (err)
4346 netdev_warn(dev,
4347 "failed to reflect master change (err %d)\n",
4348 err);
4349 break;
4350 }
4351
4352 return NOTIFY_DONE;
4353}
4354
4355static struct notifier_block rocker_netdevice_nb __read_mostly = {
4356 .notifier_call = rocker_netdevice_event,
4357};
4358
4b8ac966
JP		 4359/***********************
4360 * Module init and exit
4361 ***********************/
4362
4363static int __init rocker_module_init(void)
4364{
6c707945
SF		 4365 int err;
4366
4367 register_netdevice_notifier(&rocker_netdevice_nb);
4368 err = pci_register_driver(&rocker_pci_driver);
4369 if (err)
4370 goto err_pci_register_driver;
4371 return 0;
4372
4373err_pci_register_driver:
4374 unregister_netdevice_notifier(&rocker_netdevice_nb);
4375 return err;
4b8ac966
JP		 4376}
4377
4378static void __exit rocker_module_exit(void)
4379{
6c707945 4380 unregister_netdevice_notifier(&rocker_netdevice_nb);
4b8ac966
JP		 4381 pci_unregister_driver(&rocker_pci_driver);
4382}
4383
4384module_init(rocker_module_init);
4385module_exit(rocker_module_exit);
4386
4387MODULE_LICENSE("GPL v2");
4388MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
4389MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
4390MODULE_DESCRIPTION("Rocker switch device driver");
4391MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);
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