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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / ethernet / huawei / hinic / hinic_main.c
blob02a14f5e7fe31ddc28fe5a3720e081d5346db653
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Huawei HiNIC PCI Express Linux driver
4 * Copyright(c) 2017 Huawei Technologies Co., Ltd
5 */
6
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/moduleparam.h>
10 #include <linux/pci.h>
11 #include <linux/device.h>
12 #include <linux/errno.h>
13 #include <linux/types.h>
14 #include <linux/etherdevice.h>
15 #include <linux/netdevice.h>
16 #include <linux/slab.h>
17 #include <linux/if_vlan.h>
18 #include <linux/semaphore.h>
19 #include <linux/workqueue.h>
20 #include <net/ip.h>
21 #include <linux/bitops.h>
22 #include <linux/bitmap.h>
23 #include <linux/delay.h>
24 #include <linux/err.h>
25
26 #include "hinic_hw_qp.h"
27 #include "hinic_hw_dev.h"
28 #include "hinic_port.h"
29 #include "hinic_tx.h"
30 #include "hinic_rx.h"
31 #include "hinic_dev.h"
32
33 MODULE_AUTHOR("Huawei Technologies CO., Ltd");
34 MODULE_DESCRIPTION("Huawei Intelligent NIC driver");
35 MODULE_LICENSE("GPL");
36
37 static unsigned int tx_weight = 64;
38 module_param(tx_weight, uint, 0644);
39 MODULE_PARM_DESC(tx_weight, "Number Tx packets for NAPI budget (default=64)");
40
41 static unsigned int rx_weight = 64;
42 module_param(rx_weight, uint, 0644);
43 MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)");
44
45 #define HINIC_DEV_ID_QUAD_PORT_25GE 0x1822
46 #define HINIC_DEV_ID_DUAL_PORT_100GE 0x0200
47 #define HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ 0x0205
48 #define HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ 0x0210
49
50 #define HINIC_WQ_NAME "hinic_dev"
51
52 #define MSG_ENABLE_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
53 NETIF_MSG_IFUP | \
54 NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
55
56 #define HINIC_LRO_MAX_WQE_NUM_DEFAULT 8
57
58 #define HINIC_LRO_RX_TIMER_DEFAULT 16
59
60 #define VLAN_BITMAP_SIZE(nic_dev) (ALIGN(VLAN_N_VID, 8) / 8)
61
62 #define work_to_rx_mode_work(work) \
63 container_of(work, struct hinic_rx_mode_work, work)
64
65 #define rx_mode_work_to_nic_dev(rx_mode_work) \
66 container_of(rx_mode_work, struct hinic_dev, rx_mode_work)
67
68 static int change_mac_addr(struct net_device *netdev, const u8 *addr);
69
70 static int set_features(struct hinic_dev *nic_dev,
71 netdev_features_t pre_features,
72 netdev_features_t features, bool force_change);
73
74 static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq)
75 {
76 struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats;
77 struct hinic_rxq_stats rx_stats;
78
79 u64_stats_init(&rx_stats.syncp);
80
81 hinic_rxq_get_stats(rxq, &rx_stats);
82
83 u64_stats_update_begin(&nic_rx_stats->syncp);
84 nic_rx_stats->bytes += rx_stats.bytes;
85 nic_rx_stats->pkts += rx_stats.pkts;
86 nic_rx_stats->errors += rx_stats.errors;
87 nic_rx_stats->csum_errors += rx_stats.csum_errors;
88 nic_rx_stats->other_errors += rx_stats.other_errors;
89 u64_stats_update_end(&nic_rx_stats->syncp);
90
91 hinic_rxq_clean_stats(rxq);
92 }
93
94 static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq)
95 {
96 struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats;
97 struct hinic_txq_stats tx_stats;
98
99 u64_stats_init(&tx_stats.syncp);
100
101 hinic_txq_get_stats(txq, &tx_stats);
102
103 u64_stats_update_begin(&nic_tx_stats->syncp);
104 nic_tx_stats->bytes += tx_stats.bytes;
105 nic_tx_stats->pkts += tx_stats.pkts;
106 nic_tx_stats->tx_busy += tx_stats.tx_busy;
107 nic_tx_stats->tx_wake += tx_stats.tx_wake;
108 nic_tx_stats->tx_dropped += tx_stats.tx_dropped;
109 nic_tx_stats->big_frags_pkts += tx_stats.big_frags_pkts;
110 u64_stats_update_end(&nic_tx_stats->syncp);
111
112 hinic_txq_clean_stats(txq);
113 }
114
115 static void update_nic_stats(struct hinic_dev *nic_dev)
116 {
117 int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
118
119 for (i = 0; i < num_qps; i++)
120 update_rx_stats(nic_dev, &nic_dev->rxqs[i]);
121
122 for (i = 0; i < num_qps; i++)
123 update_tx_stats(nic_dev, &nic_dev->txqs[i]);
124 }
125
126 /**
127 * create_txqs - Create the Logical Tx Queues of specific NIC device
128 * @nic_dev: the specific NIC device
129 *
130 * Return 0 - Success, negative - Failure
131 **/
132 static int create_txqs(struct hinic_dev *nic_dev)
133 {
134 int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
135 struct net_device *netdev = nic_dev->netdev;
136 size_t txq_size;
137
138 if (nic_dev->txqs)
139 return -EINVAL;
140
141 txq_size = num_txqs * sizeof(*nic_dev->txqs);
142 nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL);
143 if (!nic_dev->txqs)
144 return -ENOMEM;
145
146 for (i = 0; i < num_txqs; i++) {
147 struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
148
149 err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev);
150 if (err) {
151 netif_err(nic_dev, drv, netdev,
152 "Failed to init Txq\n");
153 goto err_init_txq;
154 }
155 }
156
157 return 0;
158
159 err_init_txq:
160 for (j = 0; j < i; j++)
161 hinic_clean_txq(&nic_dev->txqs[j]);
162
163 devm_kfree(&netdev->dev, nic_dev->txqs);
164 return err;
165 }
166
167 /**
168 * free_txqs - Free the Logical Tx Queues of specific NIC device
169 * @nic_dev: the specific NIC device
170 **/
171 static void free_txqs(struct hinic_dev *nic_dev)
172 {
173 int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
174 struct net_device *netdev = nic_dev->netdev;
175
176 if (!nic_dev->txqs)
177 return;
178
179 for (i = 0; i < num_txqs; i++)
180 hinic_clean_txq(&nic_dev->txqs[i]);
181
182 devm_kfree(&netdev->dev, nic_dev->txqs);
183 nic_dev->txqs = NULL;
184 }
185
186 /**
187 * create_txqs - Create the Logical Rx Queues of specific NIC device
188 * @nic_dev: the specific NIC device
189 *
190 * Return 0 - Success, negative - Failure
191 **/
192 static int create_rxqs(struct hinic_dev *nic_dev)
193 {
194 int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
195 struct net_device *netdev = nic_dev->netdev;
196 size_t rxq_size;
197
198 if (nic_dev->rxqs)
199 return -EINVAL;
200
201 rxq_size = num_rxqs * sizeof(*nic_dev->rxqs);
202 nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL);
203 if (!nic_dev->rxqs)
204 return -ENOMEM;
205
206 for (i = 0; i < num_rxqs; i++) {
207 struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
208
209 err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
210 if (err) {
211 netif_err(nic_dev, drv, netdev,
212 "Failed to init rxq\n");
213 goto err_init_rxq;
214 }
215 }
216
217 return 0;
218
219 err_init_rxq:
220 for (j = 0; j < i; j++)
221 hinic_clean_rxq(&nic_dev->rxqs[j]);
222
223 devm_kfree(&netdev->dev, nic_dev->rxqs);
224 return err;
225 }
226
227 /**
228 * free_txqs - Free the Logical Rx Queues of specific NIC device
229 * @nic_dev: the specific NIC device
230 **/
231 static void free_rxqs(struct hinic_dev *nic_dev)
232 {
233 int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
234 struct net_device *netdev = nic_dev->netdev;
235
236 if (!nic_dev->rxqs)
237 return;
238
239 for (i = 0; i < num_rxqs; i++)
240 hinic_clean_rxq(&nic_dev->rxqs[i]);
241
242 devm_kfree(&netdev->dev, nic_dev->rxqs);
243 nic_dev->rxqs = NULL;
244 }
245
246 static int hinic_configure_max_qnum(struct hinic_dev *nic_dev)
247 {
248 int err;
249
250 err = hinic_set_max_qnum(nic_dev, nic_dev->hwdev->nic_cap.max_qps);
251 if (err)
252 return err;
253
254 return 0;
255 }
256
257 static int hinic_rss_init(struct hinic_dev *nic_dev)
258 {
259 u8 default_rss_key[HINIC_RSS_KEY_SIZE];
260 u8 tmpl_idx = nic_dev->rss_tmpl_idx;
261 u32 *indir_tbl;
262 int err, i;
263
264 indir_tbl = kcalloc(HINIC_RSS_INDIR_SIZE, sizeof(u32), GFP_KERNEL);
265 if (!indir_tbl)
266 return -ENOMEM;
267
268 netdev_rss_key_fill(default_rss_key, sizeof(default_rss_key));
269 for (i = 0; i < HINIC_RSS_INDIR_SIZE; i++)
270 indir_tbl[i] = ethtool_rxfh_indir_default(i, nic_dev->num_rss);
271
272 err = hinic_rss_set_template_tbl(nic_dev, tmpl_idx, default_rss_key);
273 if (err)
274 goto out;
275
276 err = hinic_rss_set_indir_tbl(nic_dev, tmpl_idx, indir_tbl);
277 if (err)
278 goto out;
279
280 err = hinic_set_rss_type(nic_dev, tmpl_idx, nic_dev->rss_type);
281 if (err)
282 goto out;
283
284 err = hinic_rss_set_hash_engine(nic_dev, tmpl_idx,
285 nic_dev->rss_hash_engine);
286 if (err)
287 goto out;
288
289 err = hinic_rss_cfg(nic_dev, 1, tmpl_idx);
290 if (err)
291 goto out;
292
293 out:
294 kfree(indir_tbl);
295 return err;
296 }
297
298 static void hinic_rss_deinit(struct hinic_dev *nic_dev)
299 {
300 hinic_rss_cfg(nic_dev, 0, nic_dev->rss_tmpl_idx);
301 }
302
303 static void hinic_init_rss_parameters(struct hinic_dev *nic_dev)
304 {
305 nic_dev->rss_hash_engine = HINIC_RSS_HASH_ENGINE_TYPE_XOR;
306 nic_dev->rss_type.tcp_ipv6_ext = 1;
307 nic_dev->rss_type.ipv6_ext = 1;
308 nic_dev->rss_type.tcp_ipv6 = 1;
309 nic_dev->rss_type.ipv6 = 1;
310 nic_dev->rss_type.tcp_ipv4 = 1;
311 nic_dev->rss_type.ipv4 = 1;
312 nic_dev->rss_type.udp_ipv6 = 1;
313 nic_dev->rss_type.udp_ipv4 = 1;
314 }
315
316 static void hinic_enable_rss(struct hinic_dev *nic_dev)
317 {
318 struct net_device *netdev = nic_dev->netdev;
319 struct hinic_hwdev *hwdev = nic_dev->hwdev;
320 struct hinic_hwif *hwif = hwdev->hwif;
321 struct pci_dev *pdev = hwif->pdev;
322 int i, node, err = 0;
323 u16 num_cpus = 0;
324
325 nic_dev->max_qps = hinic_hwdev_max_num_qps(hwdev);
326 if (nic_dev->max_qps <= 1) {
327 nic_dev->flags &= ~HINIC_RSS_ENABLE;
328 nic_dev->rss_limit = nic_dev->max_qps;
329 nic_dev->num_qps = nic_dev->max_qps;
330 nic_dev->num_rss = nic_dev->max_qps;
331
332 return;
333 }
334
335 err = hinic_rss_template_alloc(nic_dev, &nic_dev->rss_tmpl_idx);
336 if (err) {
337 netif_err(nic_dev, drv, netdev,
338 "Failed to alloc tmpl_idx for rss, can't enable rss for this function\n");
339 nic_dev->flags &= ~HINIC_RSS_ENABLE;
340 nic_dev->max_qps = 1;
341 nic_dev->rss_limit = nic_dev->max_qps;
342 nic_dev->num_qps = nic_dev->max_qps;
343 nic_dev->num_rss = nic_dev->max_qps;
344
345 return;
346 }
347
348 nic_dev->flags |= HINIC_RSS_ENABLE;
349
350 for (i = 0; i < num_online_cpus(); i++) {
351 node = cpu_to_node(i);
352 if (node == dev_to_node(&pdev->dev))
353 num_cpus++;
354 }
355
356 if (!num_cpus)
357 num_cpus = num_online_cpus();
358
359 nic_dev->num_qps = min_t(u16, nic_dev->max_qps, num_cpus);
360
361 nic_dev->rss_limit = nic_dev->num_qps;
362 nic_dev->num_rss = nic_dev->num_qps;
363
364 hinic_init_rss_parameters(nic_dev);
365 err = hinic_rss_init(nic_dev);
366 if (err)
367 netif_err(nic_dev, drv, netdev, "Failed to init rss\n");
368 }
369
370 static int hinic_open(struct net_device *netdev)
371 {
372 struct hinic_dev *nic_dev = netdev_priv(netdev);
373 enum hinic_port_link_state link_state;
374 int err, ret;
375
376 if (!(nic_dev->flags & HINIC_INTF_UP)) {
377 err = hinic_hwdev_ifup(nic_dev->hwdev);
378 if (err) {
379 netif_err(nic_dev, drv, netdev,
380 "Failed - HW interface up\n");
381 return err;
382 }
383 }
384
385 err = create_txqs(nic_dev);
386 if (err) {
387 netif_err(nic_dev, drv, netdev,
388 "Failed to create Tx queues\n");
389 goto err_create_txqs;
390 }
391
392 err = create_rxqs(nic_dev);
393 if (err) {
394 netif_err(nic_dev, drv, netdev,
395 "Failed to create Rx queues\n");
396 goto err_create_rxqs;
397 }
398
399 hinic_enable_rss(nic_dev);
400
401 err = hinic_configure_max_qnum(nic_dev);
402 if (err) {
403 netif_err(nic_dev, drv, nic_dev->netdev,
404 "Failed to configure the maximum number of queues\n");
405 goto err_port_state;
406 }
407
408 netif_set_real_num_tx_queues(netdev, nic_dev->num_qps);
409 netif_set_real_num_rx_queues(netdev, nic_dev->num_qps);
410
411 err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
412 if (err) {
413 netif_err(nic_dev, drv, netdev,
414 "Failed to set port state\n");
415 goto err_port_state;
416 }
417
418 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
419 if (err) {
420 netif_err(nic_dev, drv, netdev,
421 "Failed to set func port state\n");
422 goto err_func_port_state;
423 }
424
425 /* Wait up to 3 sec between port enable to link state */
426 msleep(3000);
427
428 down(&nic_dev->mgmt_lock);
429
430 err = hinic_port_link_state(nic_dev, &link_state);
431 if (err) {
432 netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
433 goto err_port_link;
434 }
435
436 if (link_state == HINIC_LINK_STATE_UP)
437 nic_dev->flags |= HINIC_LINK_UP;
438
439 nic_dev->flags |= HINIC_INTF_UP;
440
441 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
442 (HINIC_LINK_UP | HINIC_INTF_UP)) {
443 netif_info(nic_dev, drv, netdev, "link + intf UP\n");
444 netif_carrier_on(netdev);
445 netif_tx_wake_all_queues(netdev);
446 }
447
448 up(&nic_dev->mgmt_lock);
449
450 netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
451 return 0;
452
453 err_port_link:
454 up(&nic_dev->mgmt_lock);
455 ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
456 if (ret)
457 netif_warn(nic_dev, drv, netdev,
458 "Failed to revert func port state\n");
459
460 err_func_port_state:
461 ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
462 if (ret)
463 netif_warn(nic_dev, drv, netdev,
464 "Failed to revert port state\n");
465 err_port_state:
466 free_rxqs(nic_dev);
467 if (nic_dev->flags & HINIC_RSS_ENABLE) {
468 hinic_rss_deinit(nic_dev);
469 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx);
470 }
471
472 err_create_rxqs:
473 free_txqs(nic_dev);
474
475 err_create_txqs:
476 if (!(nic_dev->flags & HINIC_INTF_UP))
477 hinic_hwdev_ifdown(nic_dev->hwdev);
478 return err;
479 }
480
481 static int hinic_close(struct net_device *netdev)
482 {
483 struct hinic_dev *nic_dev = netdev_priv(netdev);
484 unsigned int flags;
485 int err;
486
487 down(&nic_dev->mgmt_lock);
488
489 flags = nic_dev->flags;
490 nic_dev->flags &= ~HINIC_INTF_UP;
491
492 netif_carrier_off(netdev);
493 netif_tx_disable(netdev);
494
495 update_nic_stats(nic_dev);
496
497 up(&nic_dev->mgmt_lock);
498
499 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
500 if (err) {
501 netif_err(nic_dev, drv, netdev,
502 "Failed to set func port state\n");
503 nic_dev->flags |= (flags & HINIC_INTF_UP);
504 return err;
505 }
506
507 err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
508 if (err) {
509 netif_err(nic_dev, drv, netdev, "Failed to set port state\n");
510 nic_dev->flags |= (flags & HINIC_INTF_UP);
511 return err;
512 }
513
514 if (nic_dev->flags & HINIC_RSS_ENABLE) {
515 hinic_rss_deinit(nic_dev);
516 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx);
517 }
518
519 free_rxqs(nic_dev);
520 free_txqs(nic_dev);
521
522 if (flags & HINIC_INTF_UP)
523 hinic_hwdev_ifdown(nic_dev->hwdev);
524
525 netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
526 return 0;
527 }
528
529 static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
530 {
531 struct hinic_dev *nic_dev = netdev_priv(netdev);
532 int err;
533
534 netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
535
536 err = hinic_port_set_mtu(nic_dev, new_mtu);
537 if (err)
538 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
539 else
540 netdev->mtu = new_mtu;
541
542 return err;
543 }
544
545 /**
546 * change_mac_addr - change the main mac address of network device
547 * @netdev: network device
548 * @addr: mac address to set
549 *
550 * Return 0 - Success, negative - Failure
551 **/
552 static int change_mac_addr(struct net_device *netdev, const u8 *addr)
553 {
554 struct hinic_dev *nic_dev = netdev_priv(netdev);
555 u16 vid = 0;
556 int err;
557
558 if (!is_valid_ether_addr(addr))
559 return -EADDRNOTAVAIL;
560
561 netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
562 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
563
564 down(&nic_dev->mgmt_lock);
565
566 do {
567 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
568 if (err) {
569 netif_err(nic_dev, drv, netdev,
570 "Failed to delete mac\n");
571 break;
572 }
573
574 err = hinic_port_add_mac(nic_dev, addr, vid);
575 if (err) {
576 netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
577 break;
578 }
579
580 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
581 } while (vid != VLAN_N_VID);
582
583 up(&nic_dev->mgmt_lock);
584 return err;
585 }
586
587 static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
588 {
589 unsigned char new_mac[ETH_ALEN];
590 struct sockaddr *saddr = addr;
591 int err;
592
593 memcpy(new_mac, saddr->sa_data, ETH_ALEN);
594
595 err = change_mac_addr(netdev, new_mac);
596 if (!err)
597 memcpy(netdev->dev_addr, new_mac, ETH_ALEN);
598
599 return err;
600 }
601
602 /**
603 * add_mac_addr - add mac address to network device
604 * @netdev: network device
605 * @addr: mac address to add
606 *
607 * Return 0 - Success, negative - Failure
608 **/
609 static int add_mac_addr(struct net_device *netdev, const u8 *addr)
610 {
611 struct hinic_dev *nic_dev = netdev_priv(netdev);
612 u16 vid = 0;
613 int err;
614
615 netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
616 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
617
618 down(&nic_dev->mgmt_lock);
619
620 do {
621 err = hinic_port_add_mac(nic_dev, addr, vid);
622 if (err) {
623 netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
624 break;
625 }
626
627 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
628 } while (vid != VLAN_N_VID);
629
630 up(&nic_dev->mgmt_lock);
631 return err;
632 }
633
634 /**
635 * remove_mac_addr - remove mac address from network device
636 * @netdev: network device
637 * @addr: mac address to remove
638 *
639 * Return 0 - Success, negative - Failure
640 **/
641 static int remove_mac_addr(struct net_device *netdev, const u8 *addr)
642 {
643 struct hinic_dev *nic_dev = netdev_priv(netdev);
644 u16 vid = 0;
645 int err;
646
647 if (!is_valid_ether_addr(addr))
648 return -EADDRNOTAVAIL;
649
650 netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n",
651 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
652
653 down(&nic_dev->mgmt_lock);
654
655 do {
656 err = hinic_port_del_mac(nic_dev, addr, vid);
657 if (err) {
658 netif_err(nic_dev, drv, netdev,
659 "Failed to delete mac\n");
660 break;
661 }
662
663 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
664 } while (vid != VLAN_N_VID);
665
666 up(&nic_dev->mgmt_lock);
667 return err;
668 }
669
670 static int hinic_vlan_rx_add_vid(struct net_device *netdev,
671 __always_unused __be16 proto, u16 vid)
672 {
673 struct hinic_dev *nic_dev = netdev_priv(netdev);
674 int ret, err;
675
676 netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid);
677
678 down(&nic_dev->mgmt_lock);
679
680 err = hinic_port_add_vlan(nic_dev, vid);
681 if (err) {
682 netif_err(nic_dev, drv, netdev, "Failed to add vlan\n");
683 goto err_vlan_add;
684 }
685
686 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid);
687 if (err) {
688 netif_err(nic_dev, drv, netdev, "Failed to set mac\n");
689 goto err_add_mac;
690 }
691
692 bitmap_set(nic_dev->vlan_bitmap, vid, 1);
693
694 up(&nic_dev->mgmt_lock);
695 return 0;
696
697 err_add_mac:
698 ret = hinic_port_del_vlan(nic_dev, vid);
699 if (ret)
700 netif_err(nic_dev, drv, netdev,
701 "Failed to revert by removing vlan\n");
702
703 err_vlan_add:
704 up(&nic_dev->mgmt_lock);
705 return err;
706 }
707
708 static int hinic_vlan_rx_kill_vid(struct net_device *netdev,
709 __always_unused __be16 proto, u16 vid)
710 {
711 struct hinic_dev *nic_dev = netdev_priv(netdev);
712 int err;
713
714 netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid);
715
716 down(&nic_dev->mgmt_lock);
717
718 err = hinic_port_del_vlan(nic_dev, vid);
719 if (err) {
720 netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n");
721 goto err_del_vlan;
722 }
723
724 bitmap_clear(nic_dev->vlan_bitmap, vid, 1);
725
726 up(&nic_dev->mgmt_lock);
727 return 0;
728
729 err_del_vlan:
730 up(&nic_dev->mgmt_lock);
731 return err;
732 }
733
734 static void set_rx_mode(struct work_struct *work)
735 {
736 struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
737 struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
738
739 netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
740
741 hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
742
743 __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
744 __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
745 }
746
747 static void hinic_set_rx_mode(struct net_device *netdev)
748 {
749 struct hinic_dev *nic_dev = netdev_priv(netdev);
750 struct hinic_rx_mode_work *rx_mode_work;
751 u32 rx_mode;
752
753 rx_mode_work = &nic_dev->rx_mode_work;
754
755 rx_mode = HINIC_RX_MODE_UC |
756 HINIC_RX_MODE_MC |
757 HINIC_RX_MODE_BC;
758
759 if (netdev->flags & IFF_PROMISC)
760 rx_mode |= HINIC_RX_MODE_PROMISC;
761 else if (netdev->flags & IFF_ALLMULTI)
762 rx_mode |= HINIC_RX_MODE_MC_ALL;
763
764 rx_mode_work->rx_mode = rx_mode;
765
766 queue_work(nic_dev->workq, &rx_mode_work->work);
767 }
768
769 static void hinic_tx_timeout(struct net_device *netdev, unsigned int txqueue)
770 {
771 struct hinic_dev *nic_dev = netdev_priv(netdev);
772
773 netif_err(nic_dev, drv, netdev, "Tx timeout\n");
774 }
775
776 static void hinic_get_stats64(struct net_device *netdev,
777 struct rtnl_link_stats64 *stats)
778 {
779 struct hinic_dev *nic_dev = netdev_priv(netdev);
780 struct hinic_rxq_stats *nic_rx_stats;
781 struct hinic_txq_stats *nic_tx_stats;
782
783 nic_rx_stats = &nic_dev->rx_stats;
784 nic_tx_stats = &nic_dev->tx_stats;
785
786 down(&nic_dev->mgmt_lock);
787
788 if (nic_dev->flags & HINIC_INTF_UP)
789 update_nic_stats(nic_dev);
790
791 up(&nic_dev->mgmt_lock);
792
793 stats->rx_bytes = nic_rx_stats->bytes;
794 stats->rx_packets = nic_rx_stats->pkts;
795 stats->rx_errors = nic_rx_stats->errors;
796
797 stats->tx_bytes = nic_tx_stats->bytes;
798 stats->tx_packets = nic_tx_stats->pkts;
799 stats->tx_errors = nic_tx_stats->tx_dropped;
800 }
801
802 static int hinic_set_features(struct net_device *netdev,
803 netdev_features_t features)
804 {
805 struct hinic_dev *nic_dev = netdev_priv(netdev);
806
807 return set_features(nic_dev, nic_dev->netdev->features,
808 features, false);
809 }
810
811 static netdev_features_t hinic_fix_features(struct net_device *netdev,
812 netdev_features_t features)
813 {
814 struct hinic_dev *nic_dev = netdev_priv(netdev);
815
816 /* If Rx checksum is disabled, then LRO should also be disabled */
817 if (!(features & NETIF_F_RXCSUM)) {
818 netif_info(nic_dev, drv, netdev, "disabling LRO as RXCSUM is off\n");
819 features &= ~NETIF_F_LRO;
820 }
821
822 return features;
823 }
824
825 static const struct net_device_ops hinic_netdev_ops = {
826 .ndo_open = hinic_open,
827 .ndo_stop = hinic_close,
828 .ndo_change_mtu = hinic_change_mtu,
829 .ndo_set_mac_address = hinic_set_mac_addr,
830 .ndo_validate_addr = eth_validate_addr,
831 .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
832 .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
833 .ndo_set_rx_mode = hinic_set_rx_mode,
834 .ndo_start_xmit = hinic_xmit_frame,
835 .ndo_tx_timeout = hinic_tx_timeout,
836 .ndo_get_stats64 = hinic_get_stats64,
837 .ndo_fix_features = hinic_fix_features,
838 .ndo_set_features = hinic_set_features,
839 };
840
841 static void netdev_features_init(struct net_device *netdev)
842 {
843 netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
844 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
845 NETIF_F_RXCSUM | NETIF_F_LRO |
846 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
847
848 netdev->vlan_features = netdev->hw_features;
849
850 netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
851 }
852
853 /**
854 * link_status_event_handler - link event handler
855 * @handle: nic device for the handler
856 * @buf_in: input buffer
857 * @in_size: input size
858 * @buf_in: output buffer
859 * @out_size: returned output size
860 *
861 * Return 0 - Success, negative - Failure
862 **/
863 static void link_status_event_handler(void *handle, void *buf_in, u16 in_size,
864 void *buf_out, u16 *out_size)
865 {
866 struct hinic_port_link_status *link_status, *ret_link_status;
867 struct hinic_dev *nic_dev = handle;
868
869 link_status = buf_in;
870
871 if (link_status->link == HINIC_LINK_STATE_UP) {
872 down(&nic_dev->mgmt_lock);
873
874 nic_dev->flags |= HINIC_LINK_UP;
875
876 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
877 (HINIC_LINK_UP | HINIC_INTF_UP)) {
878 netif_carrier_on(nic_dev->netdev);
879 netif_tx_wake_all_queues(nic_dev->netdev);
880 }
881
882 up(&nic_dev->mgmt_lock);
883
884 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n");
885 } else {
886 down(&nic_dev->mgmt_lock);
887
888 nic_dev->flags &= ~HINIC_LINK_UP;
889
890 netif_carrier_off(nic_dev->netdev);
891 netif_tx_disable(nic_dev->netdev);
892
893 up(&nic_dev->mgmt_lock);
894
895 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n");
896 }
897
898 ret_link_status = buf_out;
899 ret_link_status->status = 0;
900
901 *out_size = sizeof(*ret_link_status);
902 }
903
904 static int set_features(struct hinic_dev *nic_dev,
905 netdev_features_t pre_features,
906 netdev_features_t features, bool force_change)
907 {
908 netdev_features_t changed = force_change ? ~0 : pre_features ^ features;
909 u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN;
910 int err = 0;
911
912 if (changed & NETIF_F_TSO)
913 err = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ?
914 HINIC_TSO_ENABLE : HINIC_TSO_DISABLE);
915
916 if (changed & NETIF_F_RXCSUM)
917 err = hinic_set_rx_csum_offload(nic_dev, csum_en);
918
919 if (changed & NETIF_F_LRO) {
920 err = hinic_set_rx_lro_state(nic_dev,
921 !!(features & NETIF_F_LRO),
922 HINIC_LRO_RX_TIMER_DEFAULT,
923 HINIC_LRO_MAX_WQE_NUM_DEFAULT);
924 }
925
926 if (changed & NETIF_F_HW_VLAN_CTAG_RX)
927 err = hinic_set_rx_vlan_offload(nic_dev,
928 !!(features &
929 NETIF_F_HW_VLAN_CTAG_RX));
930
931 return err;
932 }
933
934 /**
935 * nic_dev_init - Initialize the NIC device
936 * @pdev: the NIC pci device
937 *
938 * Return 0 - Success, negative - Failure
939 **/
940 static int nic_dev_init(struct pci_dev *pdev)
941 {
942 struct hinic_rx_mode_work *rx_mode_work;
943 struct hinic_txq_stats *tx_stats;
944 struct hinic_rxq_stats *rx_stats;
945 struct hinic_dev *nic_dev;
946 struct net_device *netdev;
947 struct hinic_hwdev *hwdev;
948 int err, num_qps;
949
950 hwdev = hinic_init_hwdev(pdev);
951 if (IS_ERR(hwdev)) {
952 dev_err(&pdev->dev, "Failed to initialize HW device\n");
953 return PTR_ERR(hwdev);
954 }
955
956 num_qps = hinic_hwdev_num_qps(hwdev);
957 if (num_qps <= 0) {
958 dev_err(&pdev->dev, "Invalid number of QPS\n");
959 err = -EINVAL;
960 goto err_num_qps;
961 }
962
963 netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
964 if (!netdev) {
965 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
966 err = -ENOMEM;
967 goto err_alloc_etherdev;
968 }
969
970 hinic_set_ethtool_ops(netdev);
971 netdev->netdev_ops = &hinic_netdev_ops;
972 netdev->max_mtu = ETH_MAX_MTU;
973
974 nic_dev = netdev_priv(netdev);
975 nic_dev->netdev = netdev;
976 nic_dev->hwdev = hwdev;
977 nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
978 nic_dev->flags = 0;
979 nic_dev->txqs = NULL;
980 nic_dev->rxqs = NULL;
981 nic_dev->tx_weight = tx_weight;
982 nic_dev->rx_weight = rx_weight;
983
984 sema_init(&nic_dev->mgmt_lock, 1);
985
986 tx_stats = &nic_dev->tx_stats;
987 rx_stats = &nic_dev->rx_stats;
988
989 u64_stats_init(&tx_stats->syncp);
990 u64_stats_init(&rx_stats->syncp);
991
992 nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev,
993 VLAN_BITMAP_SIZE(nic_dev),
994 GFP_KERNEL);
995 if (!nic_dev->vlan_bitmap) {
996 err = -ENOMEM;
997 goto err_vlan_bitmap;
998 }
999
1000 nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
1001 if (!nic_dev->workq) {
1002 err = -ENOMEM;
1003 goto err_workq;
1004 }
1005
1006 pci_set_drvdata(pdev, netdev);
1007
1008 err = hinic_port_get_mac(nic_dev, netdev->dev_addr);
1009 if (err)
1010 dev_warn(&pdev->dev, "Failed to get mac address\n");
1011
1012 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
1013 if (err) {
1014 dev_err(&pdev->dev, "Failed to add mac\n");
1015 goto err_add_mac;
1016 }
1017
1018 err = hinic_port_set_mtu(nic_dev, netdev->mtu);
1019 if (err) {
1020 dev_err(&pdev->dev, "Failed to set mtu\n");
1021 goto err_set_mtu;
1022 }
1023
1024 rx_mode_work = &nic_dev->rx_mode_work;
1025 INIT_WORK(&rx_mode_work->work, set_rx_mode);
1026
1027 netdev_features_init(netdev);
1028
1029 netif_carrier_off(netdev);
1030
1031 hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
1032 nic_dev, link_status_event_handler);
1033
1034 err = set_features(nic_dev, 0, nic_dev->netdev->features, true);
1035 if (err)
1036 goto err_set_features;
1037
1038 SET_NETDEV_DEV(netdev, &pdev->dev);
1039
1040 err = register_netdev(netdev);
1041 if (err) {
1042 dev_err(&pdev->dev, "Failed to register netdev\n");
1043 goto err_reg_netdev;
1044 }
1045
1046 return 0;
1047
1048 err_reg_netdev:
1049 err_set_features:
1050 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1051 HINIC_MGMT_MSG_CMD_LINK_STATUS);
1052 cancel_work_sync(&rx_mode_work->work);
1053
1054 err_set_mtu:
1055 err_add_mac:
1056 pci_set_drvdata(pdev, NULL);
1057 destroy_workqueue(nic_dev->workq);
1058
1059 err_workq:
1060 err_vlan_bitmap:
1061 free_netdev(netdev);
1062
1063 err_alloc_etherdev:
1064 err_num_qps:
1065 hinic_free_hwdev(hwdev);
1066 return err;
1067 }
1068
1069 static int hinic_probe(struct pci_dev *pdev,
1070 const struct pci_device_id *id)
1071 {
1072 int err = pci_enable_device(pdev);
1073
1074 if (err) {
1075 dev_err(&pdev->dev, "Failed to enable PCI device\n");
1076 return err;
1077 }
1078
1079 err = pci_request_regions(pdev, HINIC_DRV_NAME);
1080 if (err) {
1081 dev_err(&pdev->dev, "Failed to request PCI regions\n");
1082 goto err_pci_regions;
1083 }
1084
1085 pci_set_master(pdev);
1086
1087 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1088 if (err) {
1089 dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n");
1090 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1091 if (err) {
1092 dev_err(&pdev->dev, "Failed to set DMA mask\n");
1093 goto err_dma_mask;
1094 }
1095 }
1096
1097 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1098 if (err) {
1099 dev_warn(&pdev->dev,
1100 "Couldn't set 64-bit consistent DMA mask\n");
1101 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1102 if (err) {
1103 dev_err(&pdev->dev,
1104 "Failed to set consistent DMA mask\n");
1105 goto err_dma_consistent_mask;
1106 }
1107 }
1108
1109 err = nic_dev_init(pdev);
1110 if (err) {
1111 dev_err(&pdev->dev, "Failed to initialize NIC device\n");
1112 goto err_nic_dev_init;
1113 }
1114
1115 dev_info(&pdev->dev, "HiNIC driver - probed\n");
1116 return 0;
1117
1118 err_nic_dev_init:
1119 err_dma_consistent_mask:
1120 err_dma_mask:
1121 pci_release_regions(pdev);
1122
1123 err_pci_regions:
1124 pci_disable_device(pdev);
1125 return err;
1126 }
1127
1128 static void hinic_remove(struct pci_dev *pdev)
1129 {
1130 struct net_device *netdev = pci_get_drvdata(pdev);
1131 struct hinic_dev *nic_dev = netdev_priv(netdev);
1132 struct hinic_rx_mode_work *rx_mode_work;
1133
1134 unregister_netdev(netdev);
1135
1136 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1137 HINIC_MGMT_MSG_CMD_LINK_STATUS);
1138
1139 rx_mode_work = &nic_dev->rx_mode_work;
1140 cancel_work_sync(&rx_mode_work->work);
1141
1142 pci_set_drvdata(pdev, NULL);
1143
1144 destroy_workqueue(nic_dev->workq);
1145
1146 hinic_free_hwdev(nic_dev->hwdev);
1147
1148 free_netdev(netdev);
1149
1150 pci_release_regions(pdev);
1151 pci_disable_device(pdev);
1152
1153 dev_info(&pdev->dev, "HiNIC driver - removed\n");
1154 }
1155
1156 static void hinic_shutdown(struct pci_dev *pdev)
1157 {
1158 pci_disable_device(pdev);
1159 }
1160
1161 static const struct pci_device_id hinic_pci_table[] = {
1162 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0},
1163 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0},
1164 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ), 0},
1165 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ), 0},
1166 { 0, 0}
1167 };
1168 MODULE_DEVICE_TABLE(pci, hinic_pci_table);
1169
1170 static struct pci_driver hinic_driver = {
1171 .name = HINIC_DRV_NAME,
1172 .id_table = hinic_pci_table,
1173 .probe = hinic_probe,
1174 .remove = hinic_remove,
1175 .shutdown = hinic_shutdown,
1176 };
1177
1178 module_pci_driver(hinic_driver);
Linux with added FPC-III support