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