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Merge branch 'sctp-remove-typedefs-from-structures-part-5'
[mirror_ubuntu-focal-kernel.git] / drivers / net / ethernet / hisilicon / hns3 / hns3pf / hns3_enet.c
CommitLineData
76ad4f0e
S		 1/*
2 * Copyright (c) 2016~2017 Hisilicon Limited.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 */
9
10#include <linux/dma-mapping.h>
11#include <linux/etherdevice.h>
12#include <linux/interrupt.h>
13#include <linux/if_vlan.h>
14#include <linux/ip.h>
15#include <linux/ipv6.h>
16#include <linux/module.h>
17#include <linux/pci.h>
18#include <linux/skbuff.h>
19#include <linux/sctp.h>
20#include <linux/vermagic.h>
21#include <net/gre.h>
22#include <net/vxlan.h>
23
24#include "hnae3.h"
25#include "hns3_enet.h"
26
27const char hns3_driver_name[] = "hns3";
28const char hns3_driver_version[] = VERMAGIC_STRING;
29static const char hns3_driver_string[] =
30 "Hisilicon Ethernet Network Driver for Hip08 Family";
31static const char hns3_copyright[] = "Copyright (c) 2017 Huawei Corporation.";
32static struct hnae3_client client;
33
34/* hns3_pci_tbl - PCI Device ID Table
35 *
36 * Last entry must be all 0s
37 *
38 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
39 * Class, Class Mask, private data (not used) }
40 */
41static const struct pci_device_id hns3_pci_tbl[] = {
42 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_GE), 0},
43 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE), 0},
44 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA), 0},
45 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA_MACSEC), 0},
46 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA), 0},
47 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA_MACSEC), 0},
48 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_MACSEC), 0},
49 /* required last entry */
50 {0, }
51};
52MODULE_DEVICE_TABLE(pci, hns3_pci_tbl);
53
54static irqreturn_t hns3_irq_handle(int irq, void *dev)
55{
56 struct hns3_enet_tqp_vector *tqp_vector = dev;
57
58 napi_schedule(&tqp_vector->napi);
59
60 return IRQ_HANDLED;
61}
62
63static void hns3_nic_uninit_irq(struct hns3_nic_priv *priv)
64{
65 struct hns3_enet_tqp_vector *tqp_vectors;
66 unsigned int i;
67
68 for (i = 0; i < priv->vector_num; i++) {
69 tqp_vectors = &priv->tqp_vector[i];
70
71 if (tqp_vectors->irq_init_flag != HNS3_VECTOR_INITED)
72 continue;
73
74 /* release the irq resource */
75 free_irq(tqp_vectors->vector_irq, tqp_vectors);
76 tqp_vectors->irq_init_flag = HNS3_VECTOR_NOT_INITED;
77 }
78}
79
80static int hns3_nic_init_irq(struct hns3_nic_priv *priv)
81{
82 struct hns3_enet_tqp_vector *tqp_vectors;
83 int txrx_int_idx = 0;
84 int rx_int_idx = 0;
85 int tx_int_idx = 0;
86 unsigned int i;
87 int ret;
88
89 for (i = 0; i < priv->vector_num; i++) {
90 tqp_vectors = &priv->tqp_vector[i];
91
92 if (tqp_vectors->irq_init_flag == HNS3_VECTOR_INITED)
93 continue;
94
95 if (tqp_vectors->tx_group.ring && tqp_vectors->rx_group.ring) {
96 snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
97 "%s-%s-%d", priv->netdev->name, "TxRx",
98 txrx_int_idx++);
99 txrx_int_idx++;
100 } else if (tqp_vectors->rx_group.ring) {
101 snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
102 "%s-%s-%d", priv->netdev->name, "Rx",
103 rx_int_idx++);
104 } else if (tqp_vectors->tx_group.ring) {
105 snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1,
106 "%s-%s-%d", priv->netdev->name, "Tx",
107 tx_int_idx++);
108 } else {
109 /* Skip this unused q_vector */
110 continue;
111 }
112
113 tqp_vectors->name[HNAE3_INT_NAME_LEN - 1] = '\0';
114
115 ret = request_irq(tqp_vectors->vector_irq, hns3_irq_handle, 0,
116 tqp_vectors->name,
117 tqp_vectors);
118 if (ret) {
119 netdev_err(priv->netdev, "request irq(%d) fail\n",
120 tqp_vectors->vector_irq);
121 return ret;
122 }
123
124 tqp_vectors->irq_init_flag = HNS3_VECTOR_INITED;
125 }
126
127 return 0;
128}
129
130static void hns3_mask_vector_irq(struct hns3_enet_tqp_vector *tqp_vector,
131 u32 mask_en)
132{
133 writel(mask_en, tqp_vector->mask_addr);
134}
135
136static void hns3_vector_enable(struct hns3_enet_tqp_vector *tqp_vector)
137{
138 napi_enable(&tqp_vector->napi);
139
140 /* enable vector */
141 hns3_mask_vector_irq(tqp_vector, 1);
142}
143
144static void hns3_vector_disable(struct hns3_enet_tqp_vector *tqp_vector)
145{
146 /* disable vector */
147 hns3_mask_vector_irq(tqp_vector, 0);
148
149 disable_irq(tqp_vector->vector_irq);
150 napi_disable(&tqp_vector->napi);
151}
152
153static void hns3_set_vector_coalesc_gl(struct hns3_enet_tqp_vector *tqp_vector,
154 u32 gl_value)
155{
156 /* this defines the configuration for GL (Interrupt Gap Limiter)
157 * GL defines inter interrupt gap.
158 * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing
159 */
160 writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL0_OFFSET);
161 writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL1_OFFSET);
162 writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL2_OFFSET);
163}
164
165static void hns3_set_vector_coalesc_rl(struct hns3_enet_tqp_vector *tqp_vector,
166 u32 rl_value)
167{
168 /* this defines the configuration for RL (Interrupt Rate Limiter).
169 * Rl defines rate of interrupts i.e. number of interrupts-per-second
170 * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing
171 */
172 writel(rl_value, tqp_vector->mask_addr + HNS3_VECTOR_RL_OFFSET);
173}
174
175static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector *tqp_vector)
176{
177 /* initialize the configuration for interrupt coalescing.
178 * 1. GL (Interrupt Gap Limiter)
179 * 2. RL (Interrupt Rate Limiter)
180 */
181
182 /* Default :enable interrupt coalesce */
183 tqp_vector->rx_group.int_gl = HNS3_INT_GL_50K;
184 tqp_vector->tx_group.int_gl = HNS3_INT_GL_50K;
185 hns3_set_vector_coalesc_gl(tqp_vector, HNS3_INT_GL_50K);
186 /* for now we are disabling Interrupt RL - we
187 * will re-enable later
188 */
189 hns3_set_vector_coalesc_rl(tqp_vector, 0);
190 tqp_vector->rx_group.flow_level = HNS3_FLOW_LOW;
191 tqp_vector->tx_group.flow_level = HNS3_FLOW_LOW;
192}
193
194static int hns3_nic_net_up(struct net_device *netdev)
195{
196 struct hns3_nic_priv *priv = netdev_priv(netdev);
197 struct hnae3_handle *h = priv->ae_handle;
198 int i, j;
199 int ret;
200
201 /* get irq resource for all vectors */
202 ret = hns3_nic_init_irq(priv);
203 if (ret) {
204 netdev_err(netdev, "hns init irq failed! ret=%d\n", ret);
205 return ret;
206 }
207
208 /* enable the vectors */
209 for (i = 0; i < priv->vector_num; i++)
210 hns3_vector_enable(&priv->tqp_vector[i]);
211
212 /* start the ae_dev */
213 ret = h->ae_algo->ops->start ? h->ae_algo->ops->start(h) : 0;
214 if (ret)
215 goto out_start_err;
216
217 return 0;
218
219out_start_err:
220 for (j = i - 1; j >= 0; j--)
221 hns3_vector_disable(&priv->tqp_vector[j]);
222
223 hns3_nic_uninit_irq(priv);
224
225 return ret;
226}
227
228static int hns3_nic_net_open(struct net_device *netdev)
229{
230 struct hns3_nic_priv *priv = netdev_priv(netdev);
231 struct hnae3_handle *h = priv->ae_handle;
232 int ret;
233
234 netif_carrier_off(netdev);
235
236 ret = netif_set_real_num_tx_queues(netdev, h->kinfo.num_tqps);
237 if (ret) {
238 netdev_err(netdev,
239 "netif_set_real_num_tx_queues fail, ret=%d!\n",
240 ret);
241 return ret;
242 }
243
244 ret = netif_set_real_num_rx_queues(netdev, h->kinfo.num_tqps);
245 if (ret) {
246 netdev_err(netdev,
247 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
248 return ret;
249 }
250
251 ret = hns3_nic_net_up(netdev);
252 if (ret) {
253 netdev_err(netdev,
254 "hns net up fail, ret=%d!\n", ret);
255 return ret;
256 }
257
258 return 0;
259}
260
261static void hns3_nic_net_down(struct net_device *netdev)
262{
263 struct hns3_nic_priv *priv = netdev_priv(netdev);
264 const struct hnae3_ae_ops *ops;
265 int i;
266
267 /* stop ae_dev */
268 ops = priv->ae_handle->ae_algo->ops;
269 if (ops->stop)
270 ops->stop(priv->ae_handle);
271
272 /* disable vectors */
273 for (i = 0; i < priv->vector_num; i++)
274 hns3_vector_disable(&priv->tqp_vector[i]);
275
276 /* free irq resources */
277 hns3_nic_uninit_irq(priv);
278}
279
280static int hns3_nic_net_stop(struct net_device *netdev)
281{
282 netif_tx_stop_all_queues(netdev);
283 netif_carrier_off(netdev);
284
285 hns3_nic_net_down(netdev);
286
287 return 0;
288}
289
290void hns3_set_multicast_list(struct net_device *netdev)
291{
292 struct hns3_nic_priv *priv = netdev_priv(netdev);
293 struct hnae3_handle *h = priv->ae_handle;
294 struct netdev_hw_addr *ha = NULL;
295
296 if (h->ae_algo->ops->set_mc_addr) {
297 netdev_for_each_mc_addr(ha, netdev)
298 if (h->ae_algo->ops->set_mc_addr(h, ha->addr))
299 netdev_err(netdev, "set multicast fail\n");
300 }
301}
302
303static int hns3_nic_uc_sync(struct net_device *netdev,
304 const unsigned char *addr)
305{
306 struct hns3_nic_priv *priv = netdev_priv(netdev);
307 struct hnae3_handle *h = priv->ae_handle;
308
309 if (h->ae_algo->ops->add_uc_addr)
310 return h->ae_algo->ops->add_uc_addr(h, addr);
311
312 return 0;
313}
314
315static int hns3_nic_uc_unsync(struct net_device *netdev,
316 const unsigned char *addr)
317{
318 struct hns3_nic_priv *priv = netdev_priv(netdev);
319 struct hnae3_handle *h = priv->ae_handle;
320
321 if (h->ae_algo->ops->rm_uc_addr)
322 return h->ae_algo->ops->rm_uc_addr(h, addr);
323
324 return 0;
325}
326
327static int hns3_nic_mc_sync(struct net_device *netdev,
328 const unsigned char *addr)
329{
330 struct hns3_nic_priv *priv = netdev_priv(netdev);
331 struct hnae3_handle *h = priv->ae_handle;
332
333 if (h->ae_algo->ops->add_uc_addr)
334 return h->ae_algo->ops->add_mc_addr(h, addr);
335
336 return 0;
337}
338
339static int hns3_nic_mc_unsync(struct net_device *netdev,
340 const unsigned char *addr)
341{
342 struct hns3_nic_priv *priv = netdev_priv(netdev);
343 struct hnae3_handle *h = priv->ae_handle;
344
345 if (h->ae_algo->ops->rm_uc_addr)
346 return h->ae_algo->ops->rm_mc_addr(h, addr);
347
348 return 0;
349}
350
351void hns3_nic_set_rx_mode(struct net_device *netdev)
352{
353 struct hns3_nic_priv *priv = netdev_priv(netdev);
354 struct hnae3_handle *h = priv->ae_handle;
355
356 if (h->ae_algo->ops->set_promisc_mode) {
357 if (netdev->flags & IFF_PROMISC)
358 h->ae_algo->ops->set_promisc_mode(h, 1);
359 else
360 h->ae_algo->ops->set_promisc_mode(h, 0);
361 }
362 if (__dev_uc_sync(netdev, hns3_nic_uc_sync, hns3_nic_uc_unsync))
363 netdev_err(netdev, "sync uc address fail\n");
364 if (netdev->flags & IFF_MULTICAST)
365 if (__dev_mc_sync(netdev, hns3_nic_mc_sync, hns3_nic_mc_unsync))
366 netdev_err(netdev, "sync mc address fail\n");
367}
368
369static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
370 u16 *mss, u32 *type_cs_vlan_tso)
371{
372 u32 l4_offset, hdr_len;
373 union l3_hdr_info l3;
374 union l4_hdr_info l4;
375 u32 l4_paylen;
376 int ret;
377
378 if (!skb_is_gso(skb))
379 return 0;
380
381 ret = skb_cow_head(skb, 0);
382 if (ret)
383 return ret;
384
385 l3.hdr = skb_network_header(skb);
386 l4.hdr = skb_transport_header(skb);
387
388 /* Software should clear the IPv4's checksum field when tso is
389 * needed.
390 */
391 if (l3.v4->version == 4)
392 l3.v4->check = 0;
393
394 /* tunnel packet.*/
395 if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE |
396 SKB_GSO_GRE_CSUM |
397 SKB_GSO_UDP_TUNNEL |
398 SKB_GSO_UDP_TUNNEL_CSUM)) {
399 if ((!(skb_shinfo(skb)->gso_type &
400 SKB_GSO_PARTIAL)) &&
401 (skb_shinfo(skb)->gso_type &
402 SKB_GSO_UDP_TUNNEL_CSUM)) {
403 /* Software should clear the udp's checksum
404 * field when tso is needed.
405 */
406 l4.udp->check = 0;
407 }
408 /* reset l3&l4 pointers from outer to inner headers */
409 l3.hdr = skb_inner_network_header(skb);
410 l4.hdr = skb_inner_transport_header(skb);
411
412 /* Software should clear the IPv4's checksum field when
413 * tso is needed.
414 */
415 if (l3.v4->version == 4)
416 l3.v4->check = 0;
417 }
418
419 /* normal or tunnel packet*/
420 l4_offset = l4.hdr - skb->data;
421 hdr_len = (l4.tcp->doff * 4) + l4_offset;
422
423 /* remove payload length from inner pseudo checksum when tso*/
424 l4_paylen = skb->len - l4_offset;
425 csum_replace_by_diff(&l4.tcp->check,
426 (__force __wsum)htonl(l4_paylen));
427
428 /* find the txbd field values */
429 *paylen = skb->len - hdr_len;
430 hnae_set_bit(*type_cs_vlan_tso,
431 HNS3_TXD_TSO_B, 1);
432
433 /* get MSS for TSO */
434 *mss = skb_shinfo(skb)->gso_size;
435
436 return 0;
437}
438
439static void hns3_get_l4_protocol(struct sk_buff *skb, u8 *ol4_proto,
440 u8 *il4_proto)
441{
442 union {
443 struct iphdr *v4;
444 struct ipv6hdr *v6;
445 unsigned char *hdr;
446 } l3;
447 unsigned char *l4_hdr;
448 unsigned char *exthdr;
449 u8 l4_proto_tmp;
450 __be16 frag_off;
451
452 /* find outer header point */
453 l3.hdr = skb_network_header(skb);
454 l4_hdr = skb_inner_transport_header(skb);
455
456 if (skb->protocol == htons(ETH_P_IPV6)) {
457 exthdr = l3.hdr + sizeof(*l3.v6);
458 l4_proto_tmp = l3.v6->nexthdr;
459 if (l4_hdr != exthdr)
460 ipv6_skip_exthdr(skb, exthdr - skb->data,
461 &l4_proto_tmp, &frag_off);
462 } else if (skb->protocol == htons(ETH_P_IP)) {
463 l4_proto_tmp = l3.v4->protocol;
464 }
465
466 *ol4_proto = l4_proto_tmp;
467
468 /* tunnel packet */
469 if (!skb->encapsulation) {
470 *il4_proto = 0;
471 return;
472 }
473
474 /* find inner header point */
475 l3.hdr = skb_inner_network_header(skb);
476 l4_hdr = skb_inner_transport_header(skb);
477
478 if (l3.v6->version == 6) {
479 exthdr = l3.hdr + sizeof(*l3.v6);
480 l4_proto_tmp = l3.v6->nexthdr;
481 if (l4_hdr != exthdr)
482 ipv6_skip_exthdr(skb, exthdr - skb->data,
483 &l4_proto_tmp, &frag_off);
484 } else if (l3.v4->version == 4) {
485 l4_proto_tmp = l3.v4->protocol;
486 }
487
488 *il4_proto = l4_proto_tmp;
489}
490
491static void hns3_set_l2l3l4_len(struct sk_buff *skb, u8 ol4_proto,
492 u8 il4_proto, u32 *type_cs_vlan_tso,
493 u32 *ol_type_vlan_len_msec)
494{
495 union {
496 struct iphdr *v4;
497 struct ipv6hdr *v6;
498 unsigned char *hdr;
499 } l3;
500 union {
501 struct tcphdr *tcp;
502 struct udphdr *udp;
503 struct gre_base_hdr *gre;
504 unsigned char *hdr;
505 } l4;
506 unsigned char *l2_hdr;
507 u8 l4_proto = ol4_proto;
508 u32 ol2_len;
509 u32 ol3_len;
510 u32 ol4_len;
511 u32 l2_len;
512 u32 l3_len;
513
514 l3.hdr = skb_network_header(skb);
515 l4.hdr = skb_transport_header(skb);
516
517 /* compute L2 header size for normal packet, defined in 2 Bytes */
518 l2_len = l3.hdr - skb->data;
519 hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M,
520 HNS3_TXD_L2LEN_S, l2_len >> 1);
521
522 /* tunnel packet*/
523 if (skb->encapsulation) {
524 /* compute OL2 header size, defined in 2 Bytes */
525 ol2_len = l2_len;
526 hnae_set_field(*ol_type_vlan_len_msec,
527 HNS3_TXD_L2LEN_M,
528 HNS3_TXD_L2LEN_S, ol2_len >> 1);
529
530 /* compute OL3 header size, defined in 4 Bytes */
531 ol3_len = l4.hdr - l3.hdr;
532 hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L3LEN_M,
533 HNS3_TXD_L3LEN_S, ol3_len >> 2);
534
535 /* MAC in UDP, MAC in GRE (0x6558)*/
536 if ((ol4_proto == IPPROTO_UDP) || (ol4_proto == IPPROTO_GRE)) {
537 /* switch MAC header ptr from outer to inner header.*/
538 l2_hdr = skb_inner_mac_header(skb);
539
540 /* compute OL4 header size, defined in 4 Bytes. */
541 ol4_len = l2_hdr - l4.hdr;
542 hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L4LEN_M,
543 HNS3_TXD_L4LEN_S, ol4_len >> 2);
544
545 /* switch IP header ptr from outer to inner header */
546 l3.hdr = skb_inner_network_header(skb);
547
548 /* compute inner l2 header size, defined in 2 Bytes. */
549 l2_len = l3.hdr - l2_hdr;
550 hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M,
551 HNS3_TXD_L2LEN_S, l2_len >> 1);
552 } else {
553 /* skb packet types not supported by hardware,
554 * txbd len fild doesn't be filled.
555 */
556 return;
557 }
558
559 /* switch L4 header pointer from outer to inner */
560 l4.hdr = skb_inner_transport_header(skb);
561
562 l4_proto = il4_proto;
563 }
564
565 /* compute inner(/normal) L3 header size, defined in 4 Bytes */
566 l3_len = l4.hdr - l3.hdr;
567 hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3LEN_M,
568 HNS3_TXD_L3LEN_S, l3_len >> 2);
569
570 /* compute inner(/normal) L4 header size, defined in 4 Bytes */
571 switch (l4_proto) {
572 case IPPROTO_TCP:
573 hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
574 HNS3_TXD_L4LEN_S, l4.tcp->doff);
575 break;
576 case IPPROTO_SCTP:
577 hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
578 HNS3_TXD_L4LEN_S, (sizeof(struct sctphdr) >> 2));
579 break;
580 case IPPROTO_UDP:
581 hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M,
582 HNS3_TXD_L4LEN_S, (sizeof(struct udphdr) >> 2));
583 break;
584 default:
585 /* skb packet types not supported by hardware,
586 * txbd len fild doesn't be filled.
587 */
588 return;
589 }
590}
591
592static int hns3_set_l3l4_type_csum(struct sk_buff *skb, u8 ol4_proto,
593 u8 il4_proto, u32 *type_cs_vlan_tso,
594 u32 *ol_type_vlan_len_msec)
595{
596 union {
597 struct iphdr *v4;
598 struct ipv6hdr *v6;
599 unsigned char *hdr;
600 } l3;
601 u32 l4_proto = ol4_proto;
602
603 l3.hdr = skb_network_header(skb);
604
605 /* define OL3 type and tunnel type(OL4).*/
606 if (skb->encapsulation) {
607 /* define outer network header type.*/
608 if (skb->protocol == htons(ETH_P_IP)) {
609 if (skb_is_gso(skb))
610 hnae_set_field(*ol_type_vlan_len_msec,
611 HNS3_TXD_OL3T_M, HNS3_TXD_OL3T_S,
612 HNS3_OL3T_IPV4_CSUM);
613 else
614 hnae_set_field(*ol_type_vlan_len_msec,
615 HNS3_TXD_OL3T_M, HNS3_TXD_OL3T_S,
616 HNS3_OL3T_IPV4_NO_CSUM);
617
618 } else if (skb->protocol == htons(ETH_P_IPV6)) {
619 hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_OL3T_M,
620 HNS3_TXD_OL3T_S, HNS3_OL3T_IPV6);
621 }
622
623 /* define tunnel type(OL4).*/
624 switch (l4_proto) {
625 case IPPROTO_UDP:
626 hnae_set_field(*ol_type_vlan_len_msec,
627 HNS3_TXD_TUNTYPE_M,
628 HNS3_TXD_TUNTYPE_S,
629 HNS3_TUN_MAC_IN_UDP);
630 break;
631 case IPPROTO_GRE:
632 hnae_set_field(*ol_type_vlan_len_msec,
633 HNS3_TXD_TUNTYPE_M,
634 HNS3_TXD_TUNTYPE_S,
635 HNS3_TUN_NVGRE);
636 break;
637 default:
638 /* drop the skb tunnel packet if hardware don't support,
639 * because hardware can't calculate csum when TSO.
640 */
641 if (skb_is_gso(skb))
642 return -EDOM;
643
644 /* the stack computes the IP header already,
645 * driver calculate l4 checksum when not TSO.
646 */
647 skb_checksum_help(skb);
648 return 0;
649 }
650
651 l3.hdr = skb_inner_network_header(skb);
652 l4_proto = il4_proto;
653 }
654
655 if (l3.v4->version == 4) {
656 hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M,
657 HNS3_TXD_L3T_S, HNS3_L3T_IPV4);
658
659 /* the stack computes the IP header already, the only time we
660 * need the hardware to recompute it is in the case of TSO.
661 */
662 if (skb_is_gso(skb))
663 hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L3CS_B, 1);
664
665 hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
666 } else if (l3.v6->version == 6) {
667 hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M,
668 HNS3_TXD_L3T_S, HNS3_L3T_IPV6);
669 hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1);
670 }
671
672 switch (l4_proto) {
673 case IPPROTO_TCP:
674 hnae_set_field(*type_cs_vlan_tso,
675 HNS3_TXD_L4T_M,
676 HNS3_TXD_L4T_S,
677 HNS3_L4T_TCP);
678 break;
679 case IPPROTO_UDP:
680 hnae_set_field(*type_cs_vlan_tso,
681 HNS3_TXD_L4T_M,
682 HNS3_TXD_L4T_S,
683 HNS3_L4T_UDP);
684 break;
685 case IPPROTO_SCTP:
686 hnae_set_field(*type_cs_vlan_tso,
687 HNS3_TXD_L4T_M,
688 HNS3_TXD_L4T_S,
689 HNS3_L4T_SCTP);
690 break;
691 default:
692 /* drop the skb tunnel packet if hardware don't support,
693 * because hardware can't calculate csum when TSO.
694 */
695 if (skb_is_gso(skb))
696 return -EDOM;
697
698 /* the stack computes the IP header already,
699 * driver calculate l4 checksum when not TSO.
700 */
701 skb_checksum_help(skb);
702 return 0;
703 }
704
705 return 0;
706}
707
708static void hns3_set_txbd_baseinfo(u16 *bdtp_fe_sc_vld_ra_ri, int frag_end)
709{
710 /* Config bd buffer end */
711 hnae_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_BDTYPE_M,
712 HNS3_TXD_BDTYPE_M, 0);
713 hnae_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_FE_B, !!frag_end);
714 hnae_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_VLD_B, 1);
715 hnae_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_SC_M, HNS3_TXD_SC_S, 1);
716}
717
718static int hns3_fill_desc(struct hns3_enet_ring *ring, void *priv,
719 int size, dma_addr_t dma, int frag_end,
720 enum hns_desc_type type)
721{
722 struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
723 struct hns3_desc *desc = &ring->desc[ring->next_to_use];
724 u32 ol_type_vlan_len_msec = 0;
725 u16 bdtp_fe_sc_vld_ra_ri = 0;
726 u32 type_cs_vlan_tso = 0;
727 struct sk_buff *skb;
728 u32 paylen = 0;
729 u16 mss = 0;
730 __be16 protocol;
731 u8 ol4_proto;
732 u8 il4_proto;
733 int ret;
734
735 /* The txbd's baseinfo of DESC_TYPE_PAGE & DESC_TYPE_SKB */
736 desc_cb->priv = priv;
737 desc_cb->length = size;
738 desc_cb->dma = dma;
739 desc_cb->type = type;
740
741 /* now, fill the descriptor */
742 desc->addr = cpu_to_le64(dma);
743 desc->tx.send_size = cpu_to_le16((u16)size);
744 hns3_set_txbd_baseinfo(&bdtp_fe_sc_vld_ra_ri, frag_end);
745 desc->tx.bdtp_fe_sc_vld_ra_ri = cpu_to_le16(bdtp_fe_sc_vld_ra_ri);
746
747 if (type == DESC_TYPE_SKB) {
748 skb = (struct sk_buff *)priv;
749 paylen = cpu_to_le16(skb->len);
750
751 if (skb->ip_summed == CHECKSUM_PARTIAL) {
752 skb_reset_mac_len(skb);
753 protocol = skb->protocol;
754
755 /* vlan packet*/
756 if (protocol == htons(ETH_P_8021Q)) {
757 protocol = vlan_get_protocol(skb);
758 skb->protocol = protocol;
759 }
760 hns3_get_l4_protocol(skb, &ol4_proto, &il4_proto);
761 hns3_set_l2l3l4_len(skb, ol4_proto, il4_proto,
762 &type_cs_vlan_tso,
763 &ol_type_vlan_len_msec);
764 ret = hns3_set_l3l4_type_csum(skb, ol4_proto, il4_proto,
765 &type_cs_vlan_tso,
766 &ol_type_vlan_len_msec);
767 if (ret)
768 return ret;
769
770 ret = hns3_set_tso(skb, &paylen, &mss,
771 &type_cs_vlan_tso);
772 if (ret)
773 return ret;
774 }
775
776 /* Set txbd */
777 desc->tx.ol_type_vlan_len_msec =
778 cpu_to_le32(ol_type_vlan_len_msec);
779 desc->tx.type_cs_vlan_tso_len =
780 cpu_to_le32(type_cs_vlan_tso);
781 desc->tx.paylen = cpu_to_le16(paylen);
782 desc->tx.mss = cpu_to_le16(mss);
783 }
784
785 /* move ring pointer to next.*/
786 ring_ptr_move_fw(ring, next_to_use);
787
788 return 0;
789}
790
791static int hns3_fill_desc_tso(struct hns3_enet_ring *ring, void *priv,
792 int size, dma_addr_t dma, int frag_end,
793 enum hns_desc_type type)
794{
795 unsigned int frag_buf_num;
796 unsigned int k;
797 int sizeoflast;
798 int ret;
799
800 frag_buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
801 sizeoflast = size % HNS3_MAX_BD_SIZE;
802 sizeoflast = sizeoflast ? sizeoflast : HNS3_MAX_BD_SIZE;
803
804 /* When the frag size is bigger than hardware, split this frag */
805 for (k = 0; k < frag_buf_num; k++) {
806 ret = hns3_fill_desc(ring, priv,
807 (k == frag_buf_num - 1) ?
808 sizeoflast : HNS3_MAX_BD_SIZE,
809 dma + HNS3_MAX_BD_SIZE * k,
810 frag_end && (k == frag_buf_num - 1) ? 1 : 0,
811 (type == DESC_TYPE_SKB && !k) ?
812 DESC_TYPE_SKB : DESC_TYPE_PAGE);
813 if (ret)
814 return ret;
815 }
816
817 return 0;
818}
819
820static int hns3_nic_maybe_stop_tso(struct sk_buff **out_skb, int *bnum,
821 struct hns3_enet_ring *ring)
822{
823 struct sk_buff *skb = *out_skb;
824 struct skb_frag_struct *frag;
825 int bdnum_for_frag;
826 int frag_num;
827 int buf_num;
828 int size;
829 int i;
830
831 size = skb_headlen(skb);
832 buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
833
834 frag_num = skb_shinfo(skb)->nr_frags;
835 for (i = 0; i < frag_num; i++) {
836 frag = &skb_shinfo(skb)->frags[i];
837 size = skb_frag_size(frag);
838 bdnum_for_frag =
839 (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE;
840 if (bdnum_for_frag > HNS3_MAX_BD_PER_FRAG)
841 return -ENOMEM;
842
843 buf_num += bdnum_for_frag;
844 }
845
846 if (buf_num > ring_space(ring))
847 return -EBUSY;
848
849 *bnum = buf_num;
850 return 0;
851}
852
853static int hns3_nic_maybe_stop_tx(struct sk_buff **out_skb, int *bnum,
854 struct hns3_enet_ring *ring)
855{
856 struct sk_buff *skb = *out_skb;
857 int buf_num;
858
859 /* No. of segments (plus a header) */
860 buf_num = skb_shinfo(skb)->nr_frags + 1;
861
862 if (buf_num > ring_space(ring))
863 return -EBUSY;
864
865 *bnum = buf_num;
866
867 return 0;
868}
869
870static void hns_nic_dma_unmap(struct hns3_enet_ring *ring, int next_to_use_orig)
871{
872 struct device *dev = ring_to_dev(ring);
873 unsigned int i;
874
875 for (i = 0; i < ring->desc_num; i++) {
876 /* check if this is where we started */
877 if (ring->next_to_use == next_to_use_orig)
878 break;
879
880 /* unmap the descriptor dma address */
881 if (ring->desc_cb[ring->next_to_use].type == DESC_TYPE_SKB)
882 dma_unmap_single(dev,
883 ring->desc_cb[ring->next_to_use].dma,
884 ring->desc_cb[ring->next_to_use].length,
885 DMA_TO_DEVICE);
886 else
887 dma_unmap_page(dev,
888 ring->desc_cb[ring->next_to_use].dma,
889 ring->desc_cb[ring->next_to_use].length,
890 DMA_TO_DEVICE);
891
892 /* rollback one */
893 ring_ptr_move_bw(ring, next_to_use);
894 }
895}
896
897static netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb,
898 struct net_device *netdev)
899{
900 struct hns3_nic_priv *priv = netdev_priv(netdev);
901 struct hns3_nic_ring_data *ring_data =
902 &tx_ring_data(priv, skb->queue_mapping);
903 struct hns3_enet_ring *ring = ring_data->ring;
904 struct device *dev = priv->dev;
905 struct netdev_queue *dev_queue;
906 struct skb_frag_struct *frag;
907 int next_to_use_head;
908 int next_to_use_frag;
909 dma_addr_t dma;
910 int buf_num;
911 int seg_num;
912 int size;
913 int ret;
914 int i;
915
916 /* Prefetch the data used later */
917 prefetch(skb->data);
918
919 switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
920 case -EBUSY:
921 u64_stats_update_begin(&ring->syncp);
922 ring->stats.tx_busy++;
923 u64_stats_update_end(&ring->syncp);
924
925 goto out_net_tx_busy;
926 case -ENOMEM:
927 u64_stats_update_begin(&ring->syncp);
928 ring->stats.sw_err_cnt++;
929 u64_stats_update_end(&ring->syncp);
930 netdev_err(netdev, "no memory to xmit!\n");
931
932 goto out_err_tx_ok;
933 default:
934 break;
935 }
936
937 /* No. of segments (plus a header) */
938 seg_num = skb_shinfo(skb)->nr_frags + 1;
939 /* Fill the first part */
940 size = skb_headlen(skb);
941
942 next_to_use_head = ring->next_to_use;
943
944 dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
945 if (dma_mapping_error(dev, dma)) {
946 netdev_err(netdev, "TX head DMA map failed\n");
947 ring->stats.sw_err_cnt++;
948 goto out_err_tx_ok;
949 }
950
951 ret = priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
952 DESC_TYPE_SKB);
953 if (ret)
954 goto head_dma_map_err;
955
956 next_to_use_frag = ring->next_to_use;
957 /* Fill the fragments */
958 for (i = 1; i < seg_num; i++) {
959 frag = &skb_shinfo(skb)->frags[i - 1];
960 size = skb_frag_size(frag);
961 dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
962 if (dma_mapping_error(dev, dma)) {
963 netdev_err(netdev, "TX frag(%d) DMA map failed\n", i);
964 ring->stats.sw_err_cnt++;
965 goto frag_dma_map_err;
966 }
967 ret = priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
968 seg_num - 1 == i ? 1 : 0,
969 DESC_TYPE_PAGE);
970
971 if (ret)
972 goto frag_dma_map_err;
973 }
974
975 /* Complete translate all packets */
976 dev_queue = netdev_get_tx_queue(netdev, ring_data->queue_index);
977 netdev_tx_sent_queue(dev_queue, skb->len);
978
979 wmb(); /* Commit all data before submit */
980
981 hnae_queue_xmit(ring->tqp, buf_num);
982
983 return NETDEV_TX_OK;
984
985frag_dma_map_err:
986 hns_nic_dma_unmap(ring, next_to_use_frag);
987
988head_dma_map_err:
989 hns_nic_dma_unmap(ring, next_to_use_head);
990
991out_err_tx_ok:
992 dev_kfree_skb_any(skb);
993 return NETDEV_TX_OK;
994
995out_net_tx_busy:
996 netif_stop_subqueue(netdev, ring_data->queue_index);
997 smp_mb(); /* Commit all data before submit */
998
999 return NETDEV_TX_BUSY;
1000}
1001
1002static int hns3_nic_net_set_mac_address(struct net_device *netdev, void *p)
1003{
1004 struct hns3_nic_priv *priv = netdev_priv(netdev);
1005 struct hnae3_handle *h = priv->ae_handle;
1006 struct sockaddr *mac_addr = p;
1007 int ret;
1008
1009 if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
1010 return -EADDRNOTAVAIL;
1011
1012 ret = h->ae_algo->ops->set_mac_addr(h, mac_addr->sa_data);
1013 if (ret) {
1014 netdev_err(netdev, "set_mac_address fail, ret=%d!\n", ret);
1015 return ret;
1016 }
1017
1018 ether_addr_copy(netdev->dev_addr, mac_addr->sa_data);
1019
1020 return 0;
1021}
1022
1023static int hns3_nic_set_features(struct net_device *netdev,
1024 netdev_features_t features)
1025{
1026 struct hns3_nic_priv *priv = netdev_priv(netdev);
1027
1028 if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1029 priv->ops.fill_desc = hns3_fill_desc_tso;
1030 priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso;
1031 } else {
1032 priv->ops.fill_desc = hns3_fill_desc;
1033 priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx;
1034 }
1035
1036 netdev->features = features;
1037 return 0;
1038}
1039
1040static void
1041hns3_nic_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
1042{
1043 struct hns3_nic_priv *priv = netdev_priv(netdev);
1044 int queue_num = priv->ae_handle->kinfo.num_tqps;
1045 struct hns3_enet_ring *ring;
1046 unsigned int start;
1047 unsigned int idx;
1048 u64 tx_bytes = 0;
1049 u64 rx_bytes = 0;
1050 u64 tx_pkts = 0;
1051 u64 rx_pkts = 0;
1052
1053 for (idx = 0; idx < queue_num; idx++) {
1054 /* fetch the tx stats */
1055 ring = priv->ring_data[idx].ring;
1056 do {
1057 tx_bytes += ring->stats.tx_bytes;
1058 tx_pkts += ring->stats.tx_pkts;
1059 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
1060
1061 /* fetch the rx stats */
1062 ring = priv->ring_data[idx + queue_num].ring;
1063 do {
1064 rx_bytes += ring->stats.rx_bytes;
1065 rx_pkts += ring->stats.rx_pkts;
1066 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
1067 }
1068
1069 stats->tx_bytes = tx_bytes;
1070 stats->tx_packets = tx_pkts;
1071 stats->rx_bytes = rx_bytes;
1072 stats->rx_packets = rx_pkts;
1073
1074 stats->rx_errors = netdev->stats.rx_errors;
1075 stats->multicast = netdev->stats.multicast;
1076 stats->rx_length_errors = netdev->stats.rx_length_errors;
1077 stats->rx_crc_errors = netdev->stats.rx_crc_errors;
1078 stats->rx_missed_errors = netdev->stats.rx_missed_errors;
1079
1080 stats->tx_errors = netdev->stats.tx_errors;
1081 stats->rx_dropped = netdev->stats.rx_dropped;
1082 stats->tx_dropped = netdev->stats.tx_dropped;
1083 stats->collisions = netdev->stats.collisions;
1084 stats->rx_over_errors = netdev->stats.rx_over_errors;
1085 stats->rx_frame_errors = netdev->stats.rx_frame_errors;
1086 stats->rx_fifo_errors = netdev->stats.rx_fifo_errors;
1087 stats->tx_aborted_errors = netdev->stats.tx_aborted_errors;
1088 stats->tx_carrier_errors = netdev->stats.tx_carrier_errors;
1089 stats->tx_fifo_errors = netdev->stats.tx_fifo_errors;
1090 stats->tx_heartbeat_errors = netdev->stats.tx_heartbeat_errors;
1091 stats->tx_window_errors = netdev->stats.tx_window_errors;
1092 stats->rx_compressed = netdev->stats.rx_compressed;
1093 stats->tx_compressed = netdev->stats.tx_compressed;
1094}
1095
1096static void hns3_add_tunnel_port(struct net_device *netdev, u16 port,
1097 enum hns3_udp_tnl_type type)
1098{
1099 struct hns3_nic_priv *priv = netdev_priv(netdev);
1100 struct hns3_udp_tunnel *udp_tnl = &priv->udp_tnl[type];
1101 struct hnae3_handle *h = priv->ae_handle;
1102
1103 if (udp_tnl->used && udp_tnl->dst_port == port) {
1104 udp_tnl->used++;
1105 return;
1106 }
1107
1108 if (udp_tnl->used) {
1109 netdev_warn(netdev,
1110 "UDP tunnel [%d], port [%d] offload\n", type, port);
1111 return;
1112 }
1113
1114 udp_tnl->dst_port = port;
1115 udp_tnl->used = 1;
1116 /* TBD send command to hardware to add port */
1117 if (h->ae_algo->ops->add_tunnel_udp)
1118 h->ae_algo->ops->add_tunnel_udp(h, port);
1119}
1120
1121static void hns3_del_tunnel_port(struct net_device *netdev, u16 port,
1122 enum hns3_udp_tnl_type type)
1123{
1124 struct hns3_nic_priv *priv = netdev_priv(netdev);
1125 struct hns3_udp_tunnel *udp_tnl = &priv->udp_tnl[type];
1126 struct hnae3_handle *h = priv->ae_handle;
1127
1128 if (!udp_tnl->used || udp_tnl->dst_port != port) {
1129 netdev_warn(netdev,
1130 "Invalid UDP tunnel port %d\n", port);
1131 return;
1132 }
1133
1134 udp_tnl->used--;
1135 if (udp_tnl->used)
1136 return;
1137
1138 udp_tnl->dst_port = 0;
1139 /* TBD send command to hardware to del port */
1140 if (h->ae_algo->ops->del_tunnel_udp)
1141 h->ae_algo->ops->add_tunnel_udp(h, port);
1142}
1143
1144/* hns3_nic_udp_tunnel_add - Get notifiacetion about UDP tunnel ports
1145 * @netdev: This physical ports's netdev
1146 * @ti: Tunnel information
1147 */
1148static void hns3_nic_udp_tunnel_add(struct net_device *netdev,
1149 struct udp_tunnel_info *ti)
1150{
1151 u16 port_n = ntohs(ti->port);
1152
1153 switch (ti->type) {
1154 case UDP_TUNNEL_TYPE_VXLAN:
1155 hns3_add_tunnel_port(netdev, port_n, HNS3_UDP_TNL_VXLAN);
1156 break;
1157 case UDP_TUNNEL_TYPE_GENEVE:
1158 hns3_add_tunnel_port(netdev, port_n, HNS3_UDP_TNL_GENEVE);
1159 break;
1160 default:
1161 netdev_err(netdev, "unsupported tunnel type %d\n", ti->type);
1162 break;
1163 }
1164}
1165
1166static void hns3_nic_udp_tunnel_del(struct net_device *netdev,
1167 struct udp_tunnel_info *ti)
1168{
1169 u16 port_n = ntohs(ti->port);
1170
1171 switch (ti->type) {
1172 case UDP_TUNNEL_TYPE_VXLAN:
1173 hns3_del_tunnel_port(netdev, port_n, HNS3_UDP_TNL_VXLAN);
1174 break;
1175 case UDP_TUNNEL_TYPE_GENEVE:
1176 hns3_del_tunnel_port(netdev, port_n, HNS3_UDP_TNL_GENEVE);
1177 break;
1178 default:
1179 break;
1180 }
1181}
1182
1183static int hns3_setup_tc(struct net_device *netdev, u8 tc)
1184{
1185 struct hns3_nic_priv *priv = netdev_priv(netdev);
1186 struct hnae3_handle *h = priv->ae_handle;
1187 struct hnae3_knic_private_info *kinfo = &h->kinfo;
1188 unsigned int i;
1189 int ret;
1190
1191 if (tc > HNAE3_MAX_TC)
1192 return -EINVAL;
1193
1194 if (kinfo->num_tc == tc)
1195 return 0;
1196
1197 if (!netdev)
1198 return -EINVAL;
1199
1200 if (!tc) {
1201 netdev_reset_tc(netdev);
1202 return 0;
1203 }
1204
1205 /* Set num_tc for netdev */
1206 ret = netdev_set_num_tc(netdev, tc);
1207 if (ret)
1208 return ret;
1209
1210 /* Set per TC queues for the VSI */
1211 for (i = 0; i < HNAE3_MAX_TC; i++) {
1212 if (kinfo->tc_info[i].enable)
1213 netdev_set_tc_queue(netdev,
1214 kinfo->tc_info[i].tc,
1215 kinfo->tc_info[i].tqp_count,
1216 kinfo->tc_info[i].tqp_offset);
1217 }
1218
1219 return 0;
1220}
1221
1222static int hns3_nic_setup_tc(struct net_device *dev, u32 handle,
1223 u32 chain_index, __be16 protocol,
1224 struct tc_to_netdev *tc)
1225{
1226 if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
1227 return -EINVAL;
1228
1229 return hns3_setup_tc(dev, tc->mqprio->num_tc);
1230}
1231
1232static int hns3_vlan_rx_add_vid(struct net_device *netdev,
1233 __be16 proto, u16 vid)
1234{
1235 struct hns3_nic_priv *priv = netdev_priv(netdev);
1236 struct hnae3_handle *h = priv->ae_handle;
1237 int ret = -EIO;
1238
1239 if (h->ae_algo->ops->set_vlan_filter)
1240 ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, false);
1241
1242 return ret;
1243}
1244
1245static int hns3_vlan_rx_kill_vid(struct net_device *netdev,
1246 __be16 proto, u16 vid)
1247{
1248 struct hns3_nic_priv *priv = netdev_priv(netdev);
1249 struct hnae3_handle *h = priv->ae_handle;
1250 int ret = -EIO;
1251
1252 if (h->ae_algo->ops->set_vlan_filter)
1253 ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, true);
1254
1255 return ret;
1256}
1257
1258static int hns3_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1259 u8 qos, __be16 vlan_proto)
1260{
1261 struct hns3_nic_priv *priv = netdev_priv(netdev);
1262 struct hnae3_handle *h = priv->ae_handle;
1263 int ret = -EIO;
1264
1265 if (h->ae_algo->ops->set_vf_vlan_filter)
1266 ret = h->ae_algo->ops->set_vf_vlan_filter(h, vf, vlan,
1267 qos, vlan_proto);
1268
1269 return ret;
1270}
1271
1272static const struct net_device_ops hns3_nic_netdev_ops = {
1273 .ndo_open = hns3_nic_net_open,
1274 .ndo_stop = hns3_nic_net_stop,
1275 .ndo_start_xmit = hns3_nic_net_xmit,
1276 .ndo_set_mac_address = hns3_nic_net_set_mac_address,
1277 .ndo_set_features = hns3_nic_set_features,
1278 .ndo_get_stats64 = hns3_nic_get_stats64,
1279 .ndo_setup_tc = hns3_nic_setup_tc,
1280 .ndo_set_rx_mode = hns3_nic_set_rx_mode,
1281 .ndo_udp_tunnel_add = hns3_nic_udp_tunnel_add,
1282 .ndo_udp_tunnel_del = hns3_nic_udp_tunnel_del,
1283 .ndo_vlan_rx_add_vid = hns3_vlan_rx_add_vid,
1284 .ndo_vlan_rx_kill_vid = hns3_vlan_rx_kill_vid,
1285 .ndo_set_vf_vlan = hns3_ndo_set_vf_vlan,
1286};
1287
1288/* hns3_probe - Device initialization routine
1289 * @pdev: PCI device information struct
1290 * @ent: entry in hns3_pci_tbl
1291 *
1292 * hns3_probe initializes a PF identified by a pci_dev structure.
1293 * The OS initialization, configuring of the PF private structure,
1294 * and a hardware reset occur.
1295 *
1296 * Returns 0 on success, negative on failure
1297 */
1298static int hns3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1299{
1300 struct hnae3_ae_dev *ae_dev;
1301 int ret;
1302
1303 ae_dev = devm_kzalloc(&pdev->dev, sizeof(*ae_dev),
1304 GFP_KERNEL);
1305 if (!ae_dev) {
1306 ret = -ENOMEM;
1307 return ret;
1308 }
1309
1310 ae_dev->pdev = pdev;
1311 ae_dev->dev_type = HNAE3_DEV_KNIC;
1312 pci_set_drvdata(pdev, ae_dev);
1313
1314 return hnae3_register_ae_dev(ae_dev);
1315}
1316
1317/* hns3_remove - Device removal routine
1318 * @pdev: PCI device information struct
1319 */
1320static void hns3_remove(struct pci_dev *pdev)
1321{
1322 struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
1323
1324 hnae3_unregister_ae_dev(ae_dev);
1325
1326 devm_kfree(&pdev->dev, ae_dev);
1327
1328 pci_set_drvdata(pdev, NULL);
1329}
1330
1331static struct pci_driver hns3_driver = {
1332 .name = hns3_driver_name,
1333 .id_table = hns3_pci_tbl,
1334 .probe = hns3_probe,
1335 .remove = hns3_remove,
1336};
1337
1338/* set default feature to hns3 */
1339static void hns3_set_default_feature(struct net_device *netdev)
1340{
1341 netdev->priv_flags |= IFF_UNICAST_FLT;
1342
1343 netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1344 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1345 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
1346 NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
1347 NETIF_F_GSO_UDP_TUNNEL_CSUM;
1348
1349 netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
1350
1351 netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
1352
1353 netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1354 NETIF_F_HW_VLAN_CTAG_FILTER |
1355 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1356 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
1357 NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
1358 NETIF_F_GSO_UDP_TUNNEL_CSUM;
1359
1360 netdev->vlan_features |=
1361 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
1362 NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO |
1363 NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
1364 NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
1365 NETIF_F_GSO_UDP_TUNNEL_CSUM;
1366
1367 netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1368 NETIF_F_HW_VLAN_CTAG_FILTER |
1369 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1370 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
1371 NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
1372 NETIF_F_GSO_UDP_TUNNEL_CSUM;
1373}
1374
1375static int hns3_alloc_buffer(struct hns3_enet_ring *ring,
1376 struct hns3_desc_cb *cb)
1377{
1378 unsigned int order = hnae_page_order(ring);
1379 struct page *p;
1380
1381 p = dev_alloc_pages(order);
1382 if (!p)
1383 return -ENOMEM;
1384
1385 cb->priv = p;
1386 cb->page_offset = 0;
1387 cb->reuse_flag = 0;
1388 cb->buf = page_address(p);
1389 cb->length = hnae_page_size(ring);
1390 cb->type = DESC_TYPE_PAGE;
1391
1392 memset(cb->buf, 0, cb->length);
1393
1394 return 0;
1395}
1396
1397static void hns3_free_buffer(struct hns3_enet_ring *ring,
1398 struct hns3_desc_cb *cb)
1399{
1400 if (cb->type == DESC_TYPE_SKB)
1401 dev_kfree_skb_any((struct sk_buff *)cb->priv);
1402 else if (!HNAE3_IS_TX_RING(ring))
1403 put_page((struct page *)cb->priv);
1404 memset(cb, 0, sizeof(*cb));
1405}
1406
1407static int hns3_map_buffer(struct hns3_enet_ring *ring, struct hns3_desc_cb *cb)
1408{
1409 cb->dma = dma_map_page(ring_to_dev(ring), cb->priv, 0,
1410 cb->length, ring_to_dma_dir(ring));
1411
1412 if (dma_mapping_error(ring_to_dev(ring), cb->dma))
1413 return -EIO;
1414
1415 return 0;
1416}
1417
1418static void hns3_unmap_buffer(struct hns3_enet_ring *ring,
1419 struct hns3_desc_cb *cb)
1420{
1421 if (cb->type == DESC_TYPE_SKB)
1422 dma_unmap_single(ring_to_dev(ring), cb->dma, cb->length,
1423 ring_to_dma_dir(ring));
1424 else
1425 dma_unmap_page(ring_to_dev(ring), cb->dma, cb->length,
1426 ring_to_dma_dir(ring));
1427}
1428
1429static void hns3_buffer_detach(struct hns3_enet_ring *ring, int i)
1430{
1431 hns3_unmap_buffer(ring, &ring->desc_cb[i]);
1432 ring->desc[i].addr = 0;
1433}
1434
1435static void hns3_free_buffer_detach(struct hns3_enet_ring *ring, int i)
1436{
1437 struct hns3_desc_cb *cb = &ring->desc_cb[i];
1438
1439 if (!ring->desc_cb[i].dma)
1440 return;
1441
1442 hns3_buffer_detach(ring, i);
1443 hns3_free_buffer(ring, cb);
1444}
1445
1446static void hns3_free_buffers(struct hns3_enet_ring *ring)
1447{
1448 int i;
1449
1450 for (i = 0; i < ring->desc_num; i++)
1451 hns3_free_buffer_detach(ring, i);
1452}
1453
1454/* free desc along with its attached buffer */
1455static void hns3_free_desc(struct hns3_enet_ring *ring)
1456{
1457 hns3_free_buffers(ring);
1458
1459 dma_unmap_single(ring_to_dev(ring), ring->desc_dma_addr,
1460 ring->desc_num * sizeof(ring->desc[0]),
1461 DMA_BIDIRECTIONAL);
1462 ring->desc_dma_addr = 0;
1463 kfree(ring->desc);
1464 ring->desc = NULL;
1465}
1466
1467static int hns3_alloc_desc(struct hns3_enet_ring *ring)
1468{
1469 int size = ring->desc_num * sizeof(ring->desc[0]);
1470
1471 ring->desc = kzalloc(size, GFP_KERNEL);
1472 if (!ring->desc)
1473 return -ENOMEM;
1474
1475 ring->desc_dma_addr = dma_map_single(ring_to_dev(ring), ring->desc,
1476 size, DMA_BIDIRECTIONAL);
1477 if (dma_mapping_error(ring_to_dev(ring), ring->desc_dma_addr)) {
1478 ring->desc_dma_addr = 0;
1479 kfree(ring->desc);
1480 ring->desc = NULL;
1481 return -ENOMEM;
1482 }
1483
1484 return 0;
1485}
1486
1487static int hns3_reserve_buffer_map(struct hns3_enet_ring *ring,
1488 struct hns3_desc_cb *cb)
1489{
1490 int ret;
1491
1492 ret = hns3_alloc_buffer(ring, cb);
1493 if (ret)
1494 goto out;
1495
1496 ret = hns3_map_buffer(ring, cb);
1497 if (ret)
1498 goto out_with_buf;
1499
1500 return 0;
1501
1502out_with_buf:
1503 hns3_free_buffers(ring);
1504out:
1505 return ret;
1506}
1507
1508static int hns3_alloc_buffer_attach(struct hns3_enet_ring *ring, int i)
1509{
1510 int ret = hns3_reserve_buffer_map(ring, &ring->desc_cb[i]);
1511
1512 if (ret)
1513 return ret;
1514
1515 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
1516
1517 return 0;
1518}
1519
1520/* Allocate memory for raw pkg, and map with dma */
1521static int hns3_alloc_ring_buffers(struct hns3_enet_ring *ring)
1522{
1523 int i, j, ret;
1524
1525 for (i = 0; i < ring->desc_num; i++) {
1526 ret = hns3_alloc_buffer_attach(ring, i);
1527 if (ret)
1528 goto out_buffer_fail;
1529 }
1530
1531 return 0;
1532
1533out_buffer_fail:
1534 for (j = i - 1; j >= 0; j--)
1535 hns3_free_buffer_detach(ring, j);
1536 return ret;
1537}
1538
1539/* detach a in-used buffer and replace with a reserved one */
1540static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i,
1541 struct hns3_desc_cb *res_cb)
1542{
1543 hns3_map_buffer(ring, &ring->desc_cb[i]);
1544 ring->desc_cb[i] = *res_cb;
1545 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
1546}
1547
1548static void hns3_reuse_buffer(struct hns3_enet_ring *ring, int i)
1549{
1550 ring->desc_cb[i].reuse_flag = 0;
1551 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma
1552 + ring->desc_cb[i].page_offset);
1553}
1554
1555static void hns3_nic_reclaim_one_desc(struct hns3_enet_ring *ring, int *bytes,
1556 int *pkts)
1557{
1558 struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
1559
1560 (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
1561 (*bytes) += desc_cb->length;
1562 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
1563 hns3_free_buffer_detach(ring, ring->next_to_clean);
1564
1565 ring_ptr_move_fw(ring, next_to_clean);
1566}
1567
1568static int is_valid_clean_head(struct hns3_enet_ring *ring, int h)
1569{
1570 int u = ring->next_to_use;
1571 int c = ring->next_to_clean;
1572
1573 if (unlikely(h > ring->desc_num))
1574 return 0;
1575
1576 return u > c ? (h > c && h <= u) : (h > c || h <= u);
1577}
1578
1579int hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget)
1580{
1581 struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
1582 struct netdev_queue *dev_queue;
1583 int bytes, pkts;
1584 int head;
1585
1586 head = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_HEAD_REG);
1587 rmb(); /* Make sure head is ready before touch any data */
1588
1589 if (is_ring_empty(ring) || head == ring->next_to_clean)
1590 return 0; /* no data to poll */
1591
1592 if (!is_valid_clean_head(ring, head)) {
1593 netdev_err(netdev, "wrong head (%d, %d-%d)\n", head,
1594 ring->next_to_use, ring->next_to_clean);
1595
1596 u64_stats_update_begin(&ring->syncp);
1597 ring->stats.io_err_cnt++;
1598 u64_stats_update_end(&ring->syncp);
1599 return -EIO;
1600 }
1601
1602 bytes = 0;
1603 pkts = 0;
1604 while (head != ring->next_to_clean && budget) {
1605 hns3_nic_reclaim_one_desc(ring, &bytes, &pkts);
1606 /* Issue prefetch for next Tx descriptor */
1607 prefetch(&ring->desc_cb[ring->next_to_clean]);
1608 budget--;
1609 }
1610
1611 ring->tqp_vector->tx_group.total_bytes += bytes;
1612 ring->tqp_vector->tx_group.total_packets += pkts;
1613
1614 u64_stats_update_begin(&ring->syncp);
1615 ring->stats.tx_bytes += bytes;
1616 ring->stats.tx_pkts += pkts;
1617 u64_stats_update_end(&ring->syncp);
1618
1619 dev_queue = netdev_get_tx_queue(netdev, ring->tqp->tqp_index);
1620 netdev_tx_completed_queue(dev_queue, pkts, bytes);
1621
1622 if (unlikely(pkts && netif_carrier_ok(netdev) &&
1623 (ring_space(ring) > HNS3_MAX_BD_PER_PKT))) {
1624 /* Make sure that anybody stopping the queue after this
1625 * sees the new next_to_clean.
1626 */
1627 smp_mb();
1628 if (netif_tx_queue_stopped(dev_queue)) {
1629 netif_tx_wake_queue(dev_queue);
1630 ring->stats.restart_queue++;
1631 }
1632 }
1633
1634 return !!budget;
1635}
1636
1637static int hns3_desc_unused(struct hns3_enet_ring *ring)
1638{
1639 int ntc = ring->next_to_clean;
1640 int ntu = ring->next_to_use;
1641
1642 return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu;
1643}
1644
1645static void
1646hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring, int cleand_count)
1647{
1648 struct hns3_desc_cb *desc_cb;
1649 struct hns3_desc_cb res_cbs;
1650 int i, ret;
1651
1652 for (i = 0; i < cleand_count; i++) {
1653 desc_cb = &ring->desc_cb[ring->next_to_use];
1654 if (desc_cb->reuse_flag) {
1655 u64_stats_update_begin(&ring->syncp);
1656 ring->stats.reuse_pg_cnt++;
1657 u64_stats_update_end(&ring->syncp);
1658
1659 hns3_reuse_buffer(ring, ring->next_to_use);
1660 } else {
1661 ret = hns3_reserve_buffer_map(ring, &res_cbs);
1662 if (ret) {
1663 u64_stats_update_begin(&ring->syncp);
1664 ring->stats.sw_err_cnt++;
1665 u64_stats_update_end(&ring->syncp);
1666
1667 netdev_err(ring->tqp->handle->kinfo.netdev,
1668 "hnae reserve buffer map failed.\n");
1669 break;
1670 }
1671 hns3_replace_buffer(ring, ring->next_to_use, &res_cbs);
1672 }
1673
1674 ring_ptr_move_fw(ring, next_to_use);
1675 }
1676
1677 wmb(); /* Make all data has been write before submit */
1678 writel_relaxed(i, ring->tqp->io_base + HNS3_RING_RX_RING_HEAD_REG);
1679}
1680
1681/* hns3_nic_get_headlen - determine size of header for LRO/GRO
1682 * @data: pointer to the start of the headers
1683 * @max: total length of section to find headers in
1684 *
1685 * This function is meant to determine the length of headers that will
1686 * be recognized by hardware for LRO, GRO, and RSC offloads. The main
1687 * motivation of doing this is to only perform one pull for IPv4 TCP
1688 * packets so that we can do basic things like calculating the gso_size
1689 * based on the average data per packet.
1690 */
1691static unsigned int hns3_nic_get_headlen(unsigned char *data, u32 flag,
1692 unsigned int max_size)
1693{
1694 unsigned char *network;
1695 u8 hlen;
1696
1697 /* This should never happen, but better safe than sorry */
1698 if (max_size < ETH_HLEN)
1699 return max_size;
1700
1701 /* Initialize network frame pointer */
1702 network = data;
1703
1704 /* Set first protocol and move network header forward */
1705 network += ETH_HLEN;
1706
1707 /* Handle any vlan tag if present */
1708 if (hnae_get_field(flag, HNS3_RXD_VLAN_M, HNS3_RXD_VLAN_S)
1709 == HNS3_RX_FLAG_VLAN_PRESENT) {
1710 if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN))
1711 return max_size;
1712
1713 network += VLAN_HLEN;
1714 }
1715
1716 /* Handle L3 protocols */
1717 if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S)
1718 == HNS3_RX_FLAG_L3ID_IPV4) {
1719 if ((typeof(max_size))(network - data) >
1720 (max_size - sizeof(struct iphdr)))
1721 return max_size;
1722
1723 /* Access ihl as a u8 to avoid unaligned access on ia64 */
1724 hlen = (network[0] & 0x0F) << 2;
1725
1726 /* Verify hlen meets minimum size requirements */
1727 if (hlen < sizeof(struct iphdr))
1728 return network - data;
1729
1730 /* Record next protocol if header is present */
1731 } else if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S)
1732 == HNS3_RX_FLAG_L3ID_IPV6) {
1733 if ((typeof(max_size))(network - data) >
1734 (max_size - sizeof(struct ipv6hdr)))
1735 return max_size;
1736
1737 /* Record next protocol */
1738 hlen = sizeof(struct ipv6hdr);
1739 } else {
1740 return network - data;
1741 }
1742
1743 /* Relocate pointer to start of L4 header */
1744 network += hlen;
1745
1746 /* Finally sort out TCP/UDP */
1747 if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S)
1748 == HNS3_RX_FLAG_L4ID_TCP) {
1749 if ((typeof(max_size))(network - data) >
1750 (max_size - sizeof(struct tcphdr)))
1751 return max_size;
1752
1753 /* Access doff as a u8 to avoid unaligned access on ia64 */
1754 hlen = (network[12] & 0xF0) >> 2;
1755
1756 /* Verify hlen meets minimum size requirements */
1757 if (hlen < sizeof(struct tcphdr))
1758 return network - data;
1759
1760 network += hlen;
1761 } else if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S)
1762 == HNS3_RX_FLAG_L4ID_UDP) {
1763 if ((typeof(max_size))(network - data) >
1764 (max_size - sizeof(struct udphdr)))
1765 return max_size;
1766
1767 network += sizeof(struct udphdr);
1768 }
1769
1770 /* If everything has gone correctly network should be the
1771 * data section of the packet and will be the end of the header.
1772 * If not then it probably represents the end of the last recognized
1773 * header.
1774 */
1775 if ((typeof(max_size))(network - data) < max_size)
1776 return network - data;
1777 else
1778 return max_size;
1779}
1780
1781static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
1782 struct hns3_enet_ring *ring, int pull_len,
1783 struct hns3_desc_cb *desc_cb)
1784{
1785 struct hns3_desc *desc;
1786 int truesize, size;
1787 int last_offset;
1788 bool twobufs;
1789
1790 twobufs = ((PAGE_SIZE < 8192) &&
1791 hnae_buf_size(ring) == HNS3_BUFFER_SIZE_2048);
1792
1793 desc = &ring->desc[ring->next_to_clean];
1794 size = le16_to_cpu(desc->rx.size);
1795
1796 if (twobufs) {
1797 truesize = hnae_buf_size(ring);
1798 } else {
1799 truesize = ALIGN(size, L1_CACHE_BYTES);
1800 last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
1801 }
1802
1803 skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
1804 size - pull_len, truesize - pull_len);
1805
1806 /* Avoid re-using remote pages,flag default unreuse */
1807 if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
1808 return;
1809
1810 if (twobufs) {
1811 /* If we are only owner of page we can reuse it */
1812 if (likely(page_count(desc_cb->priv) == 1)) {
1813 /* Flip page offset to other buffer */
1814 desc_cb->page_offset ^= truesize;
1815
1816 desc_cb->reuse_flag = 1;
1817 /* bump ref count on page before it is given*/
1818 get_page(desc_cb->priv);
1819 }
1820 return;
1821 }
1822
1823 /* Move offset up to the next cache line */
1824 desc_cb->page_offset += truesize;
1825
1826 if (desc_cb->page_offset <= last_offset) {
1827 desc_cb->reuse_flag = 1;
1828 /* Bump ref count on page before it is given*/
1829 get_page(desc_cb->priv);
1830 }
1831}
1832
1833static void hns3_rx_checksum(struct hns3_enet_ring *ring, struct sk_buff *skb,
1834 struct hns3_desc *desc)
1835{
1836 struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
1837 int l3_type, l4_type;
1838 u32 bd_base_info;
1839 int ol4_type;
1840 u32 l234info;
1841
1842 bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
1843 l234info = le32_to_cpu(desc->rx.l234_info);
1844
1845 skb->ip_summed = CHECKSUM_NONE;
1846
1847 skb_checksum_none_assert(skb);
1848
1849 if (!(netdev->features & NETIF_F_RXCSUM))
1850 return;
1851
1852 /* check if hardware has done checksum */
1853 if (!hnae_get_bit(bd_base_info, HNS3_RXD_L3L4P_B))
1854 return;
1855
1856 if (unlikely(hnae_get_bit(l234info, HNS3_RXD_L3E_B) ||
1857 hnae_get_bit(l234info, HNS3_RXD_L4E_B) ||
1858 hnae_get_bit(l234info, HNS3_RXD_OL3E_B) ||
1859 hnae_get_bit(l234info, HNS3_RXD_OL4E_B))) {
1860 netdev_err(netdev, "L3/L4 error pkt\n");
1861 u64_stats_update_begin(&ring->syncp);
1862 ring->stats.l3l4_csum_err++;
1863 u64_stats_update_end(&ring->syncp);
1864
1865 return;
1866 }
1867
1868 l3_type = hnae_get_field(l234info, HNS3_RXD_L3ID_M,
1869 HNS3_RXD_L3ID_S);
1870 l4_type = hnae_get_field(l234info, HNS3_RXD_L4ID_M,
1871 HNS3_RXD_L4ID_S);
1872
1873 ol4_type = hnae_get_field(l234info, HNS3_RXD_OL4ID_M, HNS3_RXD_OL4ID_S);
1874 switch (ol4_type) {
1875 case HNS3_OL4_TYPE_MAC_IN_UDP:
1876 case HNS3_OL4_TYPE_NVGRE:
1877 skb->csum_level = 1;
1878 case HNS3_OL4_TYPE_NO_TUN:
1879 /* Can checksum ipv4 or ipv6 + UDP/TCP/SCTP packets */
1880 if (l3_type == HNS3_L3_TYPE_IPV4 ||
1881 (l3_type == HNS3_L3_TYPE_IPV6 &&
1882 (l4_type == HNS3_L4_TYPE_UDP ||
1883 l4_type == HNS3_L4_TYPE_TCP ||
1884 l4_type == HNS3_L4_TYPE_SCTP)))
1885 skb->ip_summed = CHECKSUM_UNNECESSARY;
1886 break;
1887 }
1888}
1889
1890static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
1891 struct sk_buff **out_skb, int *out_bnum)
1892{
1893 struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
1894 struct hns3_desc_cb *desc_cb;
1895 struct hns3_desc *desc;
1896 struct sk_buff *skb;
1897 unsigned char *va;
1898 u32 bd_base_info;
1899 int pull_len;
1900 u32 l234info;
1901 int length;
1902 int bnum;
1903
1904 desc = &ring->desc[ring->next_to_clean];
1905 desc_cb = &ring->desc_cb[ring->next_to_clean];
1906
1907 prefetch(desc);
1908
1909 length = le16_to_cpu(desc->rx.pkt_len);
1910 bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
1911 l234info = le32_to_cpu(desc->rx.l234_info);
1912
1913 /* Check valid BD */
1914 if (!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B))
1915 return -EFAULT;
1916
1917 va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
1918
1919 /* Prefetch first cache line of first page
1920 * Idea is to cache few bytes of the header of the packet. Our L1 Cache
1921 * line size is 64B so need to prefetch twice to make it 128B. But in
1922 * actual we can have greater size of caches with 128B Level 1 cache
1923 * lines. In such a case, single fetch would suffice to cache in the
1924 * relevant part of the header.
1925 */
1926 prefetch(va);
1927#if L1_CACHE_BYTES < 128
1928 prefetch(va + L1_CACHE_BYTES);
1929#endif
1930
1931 skb = *out_skb = napi_alloc_skb(&ring->tqp_vector->napi,
1932 HNS3_RX_HEAD_SIZE);
1933 if (unlikely(!skb)) {
1934 netdev_err(netdev, "alloc rx skb fail\n");
1935
1936 u64_stats_update_begin(&ring->syncp);
1937 ring->stats.sw_err_cnt++;
1938 u64_stats_update_end(&ring->syncp);
1939
1940 return -ENOMEM;
1941 }
1942
1943 prefetchw(skb->data);
1944
1945 bnum = 1;
1946 if (length <= HNS3_RX_HEAD_SIZE) {
1947 memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
1948
1949 /* We can reuse buffer as-is, just make sure it is local */
1950 if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
1951 desc_cb->reuse_flag = 1;
1952 else /* This page cannot be reused so discard it */
1953 put_page(desc_cb->priv);
1954
1955 ring_ptr_move_fw(ring, next_to_clean);
1956 } else {
1957 u64_stats_update_begin(&ring->syncp);
1958 ring->stats.seg_pkt_cnt++;
1959 u64_stats_update_end(&ring->syncp);
1960
1961 pull_len = hns3_nic_get_headlen(va, l234info,
1962 HNS3_RX_HEAD_SIZE);
1963 memcpy(__skb_put(skb, pull_len), va,
1964 ALIGN(pull_len, sizeof(long)));
1965
1966 hns3_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
1967 ring_ptr_move_fw(ring, next_to_clean);
1968
1969 while (!hnae_get_bit(bd_base_info, HNS3_RXD_FE_B)) {
1970 desc = &ring->desc[ring->next_to_clean];
1971 desc_cb = &ring->desc_cb[ring->next_to_clean];
1972 bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
1973 hns3_nic_reuse_page(skb, bnum, ring, 0, desc_cb);
1974 ring_ptr_move_fw(ring, next_to_clean);
1975 bnum++;
1976 }
1977 }
1978
1979 *out_bnum = bnum;
1980
1981 if (unlikely(!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B))) {
1982 netdev_err(netdev, "no valid bd,%016llx,%016llx\n",
1983 ((u64 *)desc)[0], ((u64 *)desc)[1]);
1984 u64_stats_update_begin(&ring->syncp);
1985 ring->stats.non_vld_descs++;
1986 u64_stats_update_end(&ring->syncp);
1987
1988 dev_kfree_skb_any(skb);
1989 return -EINVAL;
1990 }
1991
1992 if (unlikely((!desc->rx.pkt_len) ||
1993 hnae_get_bit(l234info, HNS3_RXD_TRUNCAT_B))) {
1994 netdev_err(netdev, "truncated pkt\n");
1995 u64_stats_update_begin(&ring->syncp);
1996 ring->stats.err_pkt_len++;
1997 u64_stats_update_end(&ring->syncp);
1998
1999 dev_kfree_skb_any(skb);
2000 return -EFAULT;
2001 }
2002
2003 if (unlikely(hnae_get_bit(l234info, HNS3_RXD_L2E_B))) {
2004 netdev_err(netdev, "L2 error pkt\n");
2005 u64_stats_update_begin(&ring->syncp);
2006 ring->stats.l2_err++;
2007 u64_stats_update_end(&ring->syncp);
2008
2009 dev_kfree_skb_any(skb);
2010 return -EFAULT;
2011 }
2012
2013 u64_stats_update_begin(&ring->syncp);
2014 ring->stats.rx_pkts++;
2015 ring->stats.rx_bytes += skb->len;
2016 u64_stats_update_end(&ring->syncp);
2017
2018 ring->tqp_vector->rx_group.total_bytes += skb->len;
2019
2020 hns3_rx_checksum(ring, skb, desc);
2021 return 0;
2022}
2023
2024static int hns3_clean_rx_ring(struct hns3_enet_ring *ring, int budget)
2025{
2026#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
2027 struct net_device *netdev = ring->tqp->handle->kinfo.netdev;
2028 int recv_pkts, recv_bds, clean_count, err;
2029 int unused_count = hns3_desc_unused(ring);
2030 struct sk_buff *skb = NULL;
2031 int num, bnum = 0;
2032
2033 num = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_FBDNUM_REG);
2034 rmb(); /* Make sure num taken effect before the other data is touched */
2035
2036 recv_pkts = 0, recv_bds = 0, clean_count = 0;
2037 num -= unused_count;
2038
2039 while (recv_pkts < budget && recv_bds < num) {
2040 /* Reuse or realloc buffers */
2041 if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
2042 hns3_nic_alloc_rx_buffers(ring,
2043 clean_count + unused_count);
2044 clean_count = 0;
2045 unused_count = hns3_desc_unused(ring);
2046 }
2047
2048 /* Poll one pkt */
2049 err = hns3_handle_rx_bd(ring, &skb, &bnum);
2050 if (unlikely(!skb)) /* This fault cannot be repaired */
2051 goto out;
2052
2053 recv_bds += bnum;
2054 clean_count += bnum;
2055 if (unlikely(err)) { /* Do jump the err */
2056 recv_pkts++;
2057 continue;
2058 }
2059
2060 /* Do update ip stack process */
2061 skb->protocol = eth_type_trans(skb, netdev);
2062 (void)napi_gro_receive(&ring->tqp_vector->napi, skb);
2063
2064 recv_pkts++;
2065 }
2066
2067out:
2068 /* Make all data has been write before submit */
2069 if (clean_count + unused_count > 0)
2070 hns3_nic_alloc_rx_buffers(ring,
2071 clean_count + unused_count);
2072
2073 return recv_pkts;
2074}
2075
2076static bool hns3_get_new_int_gl(struct hns3_enet_ring_group *ring_group)
2077{
2078#define HNS3_RX_ULTRA_PACKET_RATE 40000
2079 enum hns3_flow_level_range new_flow_level;
2080 struct hns3_enet_tqp_vector *tqp_vector;
2081 int packets_per_secs;
2082 int bytes_per_usecs;
2083 u16 new_int_gl;
2084 int usecs;
2085
2086 if (!ring_group->int_gl)
2087 return false;
2088
2089 if (ring_group->total_packets == 0) {
2090 ring_group->int_gl = HNS3_INT_GL_50K;
2091 ring_group->flow_level = HNS3_FLOW_LOW;
2092 return true;
2093 }
2094
2095 /* Simple throttlerate management
2096 * 0-10MB/s lower (50000 ints/s)
2097 * 10-20MB/s middle (20000 ints/s)
2098 * 20-1249MB/s high (18000 ints/s)
2099 * > 40000pps ultra (8000 ints/s)
2100 */
2101 new_flow_level = ring_group->flow_level;
2102 new_int_gl = ring_group->int_gl;
2103 tqp_vector = ring_group->ring->tqp_vector;
2104 usecs = (ring_group->int_gl << 1);
2105 bytes_per_usecs = ring_group->total_bytes / usecs;
2106 /* 1000000 microseconds */
2107 packets_per_secs = ring_group->total_packets * 1000000 / usecs;
2108
2109 switch (new_flow_level) {
2110 case HNS3_FLOW_LOW:
2111 if (bytes_per_usecs > 10)
2112 new_flow_level = HNS3_FLOW_MID;
2113 break;
2114 case HNS3_FLOW_MID:
2115 if (bytes_per_usecs > 20)
2116 new_flow_level = HNS3_FLOW_HIGH;
2117 else if (bytes_per_usecs <= 10)
2118 new_flow_level = HNS3_FLOW_LOW;
2119 break;
2120 case HNS3_FLOW_HIGH:
2121 case HNS3_FLOW_ULTRA:
2122 default:
2123 if (bytes_per_usecs <= 20)
2124 new_flow_level = HNS3_FLOW_MID;
2125 break;
2126 }
2127
2128 if ((packets_per_secs > HNS3_RX_ULTRA_PACKET_RATE) &&
2129 (&tqp_vector->rx_group == ring_group))
2130 new_flow_level = HNS3_FLOW_ULTRA;
2131
2132 switch (new_flow_level) {
2133 case HNS3_FLOW_LOW:
2134 new_int_gl = HNS3_INT_GL_50K;
2135 break;
2136 case HNS3_FLOW_MID:
2137 new_int_gl = HNS3_INT_GL_20K;
2138 break;
2139 case HNS3_FLOW_HIGH:
2140 new_int_gl = HNS3_INT_GL_18K;
2141 break;
2142 case HNS3_FLOW_ULTRA:
2143 new_int_gl = HNS3_INT_GL_8K;
2144 break;
2145 default:
2146 break;
2147 }
2148
2149 ring_group->total_bytes = 0;
2150 ring_group->total_packets = 0;
2151 ring_group->flow_level = new_flow_level;
2152 if (new_int_gl != ring_group->int_gl) {
2153 ring_group->int_gl = new_int_gl;
2154 return true;
2155 }
2156 return false;
2157}
2158
2159static void hns3_update_new_int_gl(struct hns3_enet_tqp_vector *tqp_vector)
2160{
2161 u16 rx_int_gl, tx_int_gl;
2162 bool rx, tx;
2163
2164 rx = hns3_get_new_int_gl(&tqp_vector->rx_group);
2165 tx = hns3_get_new_int_gl(&tqp_vector->tx_group);
2166 rx_int_gl = tqp_vector->rx_group.int_gl;
2167 tx_int_gl = tqp_vector->tx_group.int_gl;
2168 if (rx && tx) {
2169 if (rx_int_gl > tx_int_gl) {
2170 tqp_vector->tx_group.int_gl = rx_int_gl;
2171 tqp_vector->tx_group.flow_level =
2172 tqp_vector->rx_group.flow_level;
2173 hns3_set_vector_coalesc_gl(tqp_vector, rx_int_gl);
2174 } else {
2175 tqp_vector->rx_group.int_gl = tx_int_gl;
2176 tqp_vector->rx_group.flow_level =
2177 tqp_vector->tx_group.flow_level;
2178 hns3_set_vector_coalesc_gl(tqp_vector, tx_int_gl);
2179 }
2180 }
2181}
2182
2183static int hns3_nic_common_poll(struct napi_struct *napi, int budget)
2184{
2185 struct hns3_enet_ring *ring;
2186 int rx_pkt_total = 0;
2187
2188 struct hns3_enet_tqp_vector *tqp_vector =
2189 container_of(napi, struct hns3_enet_tqp_vector, napi);
2190 bool clean_complete = true;
2191 int rx_budget;
2192
2193 /* Since the actual Tx work is minimal, we can give the Tx a larger
2194 * budget and be more aggressive about cleaning up the Tx descriptors.
2195 */
2196 hns3_for_each_ring(ring, tqp_vector->tx_group) {
2197 if (!hns3_clean_tx_ring(ring, budget))
2198 clean_complete = false;
2199 }
2200
2201 /* make sure rx ring budget not smaller than 1 */
2202 rx_budget = max(budget / tqp_vector->num_tqps, 1);
2203
2204 hns3_for_each_ring(ring, tqp_vector->rx_group) {
2205 int rx_cleaned = hns3_clean_rx_ring(ring, rx_budget);
2206
2207 if (rx_cleaned >= rx_budget)
2208 clean_complete = false;
2209
2210 rx_pkt_total += rx_cleaned;
2211 }
2212
2213 tqp_vector->rx_group.total_packets += rx_pkt_total;
2214
2215 if (!clean_complete)
2216 return budget;
2217
2218 napi_complete(napi);
2219 hns3_update_new_int_gl(tqp_vector);
2220 hns3_mask_vector_irq(tqp_vector, 1);
2221
2222 return rx_pkt_total;
2223}
2224
2225static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
2226 struct hnae3_ring_chain_node *head)
2227{
2228 struct pci_dev *pdev = tqp_vector->handle->pdev;
2229 struct hnae3_ring_chain_node *cur_chain = head;
2230 struct hnae3_ring_chain_node *chain;
2231 struct hns3_enet_ring *tx_ring;
2232 struct hns3_enet_ring *rx_ring;
2233
2234 tx_ring = tqp_vector->tx_group.ring;
2235 if (tx_ring) {
2236 cur_chain->tqp_index = tx_ring->tqp->tqp_index;
2237 hnae_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B,
2238 HNAE3_RING_TYPE_TX);
2239
2240 cur_chain->next = NULL;
2241
2242 while (tx_ring->next) {
2243 tx_ring = tx_ring->next;
2244
2245 chain = devm_kzalloc(&pdev->dev, sizeof(*chain),
2246 GFP_KERNEL);
2247 if (!chain)
2248 return -ENOMEM;
2249
2250 cur_chain->next = chain;
2251 chain->tqp_index = tx_ring->tqp->tqp_index;
2252 hnae_set_bit(chain->flag, HNAE3_RING_TYPE_B,
2253 HNAE3_RING_TYPE_TX);
2254
2255 cur_chain = chain;
2256 }
2257 }
2258
2259 rx_ring = tqp_vector->rx_group.ring;
2260 if (!tx_ring && rx_ring) {
2261 cur_chain->next = NULL;
2262 cur_chain->tqp_index = rx_ring->tqp->tqp_index;
2263 hnae_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B,
2264 HNAE3_RING_TYPE_RX);
2265
2266 rx_ring = rx_ring->next;
2267 }
2268
2269 while (rx_ring) {
2270 chain = devm_kzalloc(&pdev->dev, sizeof(*chain), GFP_KERNEL);
2271 if (!chain)
2272 return -ENOMEM;
2273
2274 cur_chain->next = chain;
2275 chain->tqp_index = rx_ring->tqp->tqp_index;
2276 hnae_set_bit(chain->flag, HNAE3_RING_TYPE_B,
2277 HNAE3_RING_TYPE_RX);
2278 cur_chain = chain;
2279
2280 rx_ring = rx_ring->next;
2281 }
2282
2283 return 0;
2284}
2285
2286static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
2287 struct hnae3_ring_chain_node *head)
2288{
2289 struct pci_dev *pdev = tqp_vector->handle->pdev;
2290 struct hnae3_ring_chain_node *chain_tmp, *chain;
2291
2292 chain = head->next;
2293
2294 while (chain) {
2295 chain_tmp = chain->next;
2296 devm_kfree(&pdev->dev, chain);
2297 chain = chain_tmp;
2298 }
2299}
2300
2301static void hns3_add_ring_to_group(struct hns3_enet_ring_group *group,
2302 struct hns3_enet_ring *ring)
2303{
2304 ring->next = group->ring;
2305 group->ring = ring;
2306
2307 group->count++;
2308}
2309
2310static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv)
2311{
2312 struct hnae3_ring_chain_node vector_ring_chain;
2313 struct hnae3_handle *h = priv->ae_handle;
2314 struct hns3_enet_tqp_vector *tqp_vector;
2315 struct hnae3_vector_info *vector;
2316 struct pci_dev *pdev = h->pdev;
2317 u16 tqp_num = h->kinfo.num_tqps;
2318 u16 vector_num;
2319 int ret = 0;
2320 u16 i;
2321
2322 /* RSS size, cpu online and vector_num should be the same */
2323 /* Should consider 2p/4p later */
2324 vector_num = min_t(u16, num_online_cpus(), tqp_num);
2325 vector = devm_kcalloc(&pdev->dev, vector_num, sizeof(*vector),
2326 GFP_KERNEL);
2327 if (!vector)
2328 return -ENOMEM;
2329
2330 vector_num = h->ae_algo->ops->get_vector(h, vector_num, vector);
2331
2332 priv->vector_num = vector_num;
2333 priv->tqp_vector = (struct hns3_enet_tqp_vector *)
2334 devm_kcalloc(&pdev->dev, vector_num, sizeof(*priv->tqp_vector),
2335 GFP_KERNEL);
2336 if (!priv->tqp_vector)
2337 return -ENOMEM;
2338
2339 for (i = 0; i < tqp_num; i++) {
2340 u16 vector_i = i % vector_num;
2341
2342 tqp_vector = &priv->tqp_vector[vector_i];
2343
2344 hns3_add_ring_to_group(&tqp_vector->tx_group,
2345 priv->ring_data[i].ring);
2346
2347 hns3_add_ring_to_group(&tqp_vector->rx_group,
2348 priv->ring_data[i + tqp_num].ring);
2349
2350 tqp_vector->idx = vector_i;
2351 tqp_vector->mask_addr = vector[vector_i].io_addr;
2352 tqp_vector->vector_irq = vector[vector_i].vector;
2353 tqp_vector->num_tqps++;
2354
2355 priv->ring_data[i].ring->tqp_vector = tqp_vector;
2356 priv->ring_data[i + tqp_num].ring->tqp_vector = tqp_vector;
2357 }
2358
2359 for (i = 0; i < vector_num; i++) {
2360 tqp_vector = &priv->tqp_vector[i];
2361
2362 tqp_vector->rx_group.total_bytes = 0;
2363 tqp_vector->rx_group.total_packets = 0;
2364 tqp_vector->tx_group.total_bytes = 0;
2365 tqp_vector->tx_group.total_packets = 0;
2366 hns3_vector_gl_rl_init(tqp_vector);
2367 tqp_vector->handle = h;
2368
2369 ret = hns3_get_vector_ring_chain(tqp_vector,
2370 &vector_ring_chain);
2371 if (ret)
2372 goto out;
2373
2374 ret = h->ae_algo->ops->map_ring_to_vector(h,
2375 tqp_vector->vector_irq, &vector_ring_chain);
2376 if (ret)
2377 goto out;
2378
2379 hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
2380
2381 netif_napi_add(priv->netdev, &tqp_vector->napi,
2382 hns3_nic_common_poll, NAPI_POLL_WEIGHT);
2383 }
2384
2385out:
2386 devm_kfree(&pdev->dev, vector);
2387 return ret;
2388}
2389
2390static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv)
2391{
2392 struct hnae3_ring_chain_node vector_ring_chain;
2393 struct hnae3_handle *h = priv->ae_handle;
2394 struct hns3_enet_tqp_vector *tqp_vector;
2395 struct pci_dev *pdev = h->pdev;
2396 int i, ret;
2397
2398 for (i = 0; i < priv->vector_num; i++) {
2399 tqp_vector = &priv->tqp_vector[i];
2400
2401 ret = hns3_get_vector_ring_chain(tqp_vector,
2402 &vector_ring_chain);
2403 if (ret)
2404 return ret;
2405
2406 ret = h->ae_algo->ops->unmap_ring_from_vector(h,
2407 tqp_vector->vector_irq, &vector_ring_chain);
2408 if (ret)
2409 return ret;
2410
2411 hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
2412
2413 if (priv->tqp_vector[i].irq_init_flag == HNS3_VECTOR_INITED) {
2414 (void)irq_set_affinity_hint(
2415 priv->tqp_vector[i].vector_irq,
2416 NULL);
2417 devm_free_irq(&pdev->dev,
2418 priv->tqp_vector[i].vector_irq,
2419 &priv->tqp_vector[i]);
2420 }
2421
2422 priv->ring_data[i].ring->irq_init_flag = HNS3_VECTOR_NOT_INITED;
2423
2424 netif_napi_del(&priv->tqp_vector[i].napi);
2425 }
2426
2427 devm_kfree(&pdev->dev, priv->tqp_vector);
2428
2429 return 0;
2430}
2431
2432static int hns3_ring_get_cfg(struct hnae3_queue *q, struct hns3_nic_priv *priv,
2433 int ring_type)
2434{
2435 struct hns3_nic_ring_data *ring_data = priv->ring_data;
2436 int queue_num = priv->ae_handle->kinfo.num_tqps;
2437 struct pci_dev *pdev = priv->ae_handle->pdev;
2438 struct hns3_enet_ring *ring;
2439
2440 ring = devm_kzalloc(&pdev->dev, sizeof(*ring), GFP_KERNEL);
2441 if (!ring)
2442 return -ENOMEM;
2443
2444 if (ring_type == HNAE3_RING_TYPE_TX) {
2445 ring_data[q->tqp_index].ring = ring;
2446 ring->io_base = (u8 __iomem *)q->io_base + HNS3_TX_REG_OFFSET;
2447 } else {
2448 ring_data[q->tqp_index + queue_num].ring = ring;
2449 ring->io_base = q->io_base;
2450 }
2451
2452 hnae_set_bit(ring->flag, HNAE3_RING_TYPE_B, ring_type);
2453
2454 ring_data[q->tqp_index].queue_index = q->tqp_index;
2455
2456 ring->tqp = q;
2457 ring->desc = NULL;
2458 ring->desc_cb = NULL;
2459 ring->dev = priv->dev;
2460 ring->desc_dma_addr = 0;
2461 ring->buf_size = q->buf_size;
2462 ring->desc_num = q->desc_num;
2463 ring->next_to_use = 0;
2464 ring->next_to_clean = 0;
2465
2466 return 0;
2467}
2468
2469static int hns3_queue_to_ring(struct hnae3_queue *tqp,
2470 struct hns3_nic_priv *priv)
2471{
2472 int ret;
2473
2474 ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_TX);
2475 if (ret)
2476 return ret;
2477
2478 ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_RX);
2479 if (ret)
2480 return ret;
2481
2482 return 0;
2483}
2484
2485static int hns3_get_ring_config(struct hns3_nic_priv *priv)
2486{
2487 struct hnae3_handle *h = priv->ae_handle;
2488 struct pci_dev *pdev = h->pdev;
2489 int i, ret;
2490
2491 priv->ring_data = devm_kzalloc(&pdev->dev, h->kinfo.num_tqps *
2492 sizeof(*priv->ring_data) * 2,
2493 GFP_KERNEL);
2494 if (!priv->ring_data)
2495 return -ENOMEM;
2496
2497 for (i = 0; i < h->kinfo.num_tqps; i++) {
2498 ret = hns3_queue_to_ring(h->kinfo.tqp[i], priv);
2499 if (ret)
2500 goto err;
2501 }
2502
2503 return 0;
2504err:
2505 devm_kfree(&pdev->dev, priv->ring_data);
2506 return ret;
2507}
2508
2509static int hns3_alloc_ring_memory(struct hns3_enet_ring *ring)
2510{
2511 int ret;
2512
2513 if (ring->desc_num <= 0 || ring->buf_size <= 0)
2514 return -EINVAL;
2515
2516 ring->desc_cb = kcalloc(ring->desc_num, sizeof(ring->desc_cb[0]),
2517 GFP_KERNEL);
2518 if (!ring->desc_cb) {
2519 ret = -ENOMEM;
2520 goto out;
2521 }
2522
2523 ret = hns3_alloc_desc(ring);
2524 if (ret)
2525 goto out_with_desc_cb;
2526
2527 if (!HNAE3_IS_TX_RING(ring)) {
2528 ret = hns3_alloc_ring_buffers(ring);
2529 if (ret)
2530 goto out_with_desc;
2531 }
2532
2533 return 0;
2534
2535out_with_desc:
2536 hns3_free_desc(ring);
2537out_with_desc_cb:
2538 kfree(ring->desc_cb);
2539 ring->desc_cb = NULL;
2540out:
2541 return ret;
2542}
2543
2544static void hns3_fini_ring(struct hns3_enet_ring *ring)
2545{
2546 hns3_free_desc(ring);
2547 kfree(ring->desc_cb);
2548 ring->desc_cb = NULL;
2549 ring->next_to_clean = 0;
2550 ring->next_to_use = 0;
2551}
2552
2553int hns3_buf_size2type(u32 buf_size)
2554{
2555 int bd_size_type;
2556
2557 switch (buf_size) {
2558 case 512:
2559 bd_size_type = HNS3_BD_SIZE_512_TYPE;
2560 break;
2561 case 1024:
2562 bd_size_type = HNS3_BD_SIZE_1024_TYPE;
2563 break;
2564 case 2048:
2565 bd_size_type = HNS3_BD_SIZE_2048_TYPE;
2566 break;
2567 case 4096:
2568 bd_size_type = HNS3_BD_SIZE_4096_TYPE;
2569 break;
2570 default:
2571 bd_size_type = HNS3_BD_SIZE_2048_TYPE;
2572 }
2573
2574 return bd_size_type;
2575}
2576
2577static void hns3_init_ring_hw(struct hns3_enet_ring *ring)
2578{
2579 dma_addr_t dma = ring->desc_dma_addr;
2580 struct hnae3_queue *q = ring->tqp;
2581
2582 if (!HNAE3_IS_TX_RING(ring)) {
2583 hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_L_REG,
2584 (u32)dma);
2585 hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_H_REG,
2586 (u32)((dma >> 31) >> 1));
2587
2588 hns3_write_dev(q, HNS3_RING_RX_RING_BD_LEN_REG,
2589 hns3_buf_size2type(ring->buf_size));
2590 hns3_write_dev(q, HNS3_RING_RX_RING_BD_NUM_REG,
2591 ring->desc_num / 8 - 1);
2592
2593 } else {
2594 hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_L_REG,
2595 (u32)dma);
2596 hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_H_REG,
2597 (u32)((dma >> 31) >> 1));
2598
2599 hns3_write_dev(q, HNS3_RING_TX_RING_BD_LEN_REG,
2600 hns3_buf_size2type(ring->buf_size));
2601 hns3_write_dev(q, HNS3_RING_TX_RING_BD_NUM_REG,
2602 ring->desc_num / 8 - 1);
2603 }
2604}
2605
2606static int hns3_init_all_ring(struct hns3_nic_priv *priv)
2607{
2608 struct hnae3_handle *h = priv->ae_handle;
2609 int ring_num = h->kinfo.num_tqps * 2;
2610 int i, j;
2611 int ret;
2612
2613 for (i = 0; i < ring_num; i++) {
2614 ret = hns3_alloc_ring_memory(priv->ring_data[i].ring);
2615 if (ret) {
2616 dev_err(priv->dev,
2617 "Alloc ring memory fail! ret=%d\n", ret);
2618 goto out_when_alloc_ring_memory;
2619 }
2620
2621 hns3_init_ring_hw(priv->ring_data[i].ring);
2622
2623 u64_stats_init(&priv->ring_data[i].ring->syncp);
2624 }
2625
2626 return 0;
2627
2628out_when_alloc_ring_memory:
2629 for (j = i - 1; j >= 0; j--)
2630 hns3_fini_ring(priv->ring_data[i].ring);
2631
2632 return -ENOMEM;
2633}
2634
2635static int hns3_uninit_all_ring(struct hns3_nic_priv *priv)
2636{
2637 struct hnae3_handle *h = priv->ae_handle;
2638 int i;
2639
2640 for (i = 0; i < h->kinfo.num_tqps; i++) {
2641 if (h->ae_algo->ops->reset_queue)
2642 h->ae_algo->ops->reset_queue(h, i);
2643
2644 hns3_fini_ring(priv->ring_data[i].ring);
2645 hns3_fini_ring(priv->ring_data[i + h->kinfo.num_tqps].ring);
2646 }
2647
2648 return 0;
2649}
2650
2651/* Set mac addr if it is configured. or leave it to the AE driver */
2652static void hns3_init_mac_addr(struct net_device *netdev)
2653{
2654 struct hns3_nic_priv *priv = netdev_priv(netdev);
2655 struct hnae3_handle *h = priv->ae_handle;
2656 u8 mac_addr_temp[ETH_ALEN];
2657
2658 if (h->ae_algo->ops->get_mac_addr) {
2659 h->ae_algo->ops->get_mac_addr(h, mac_addr_temp);
2660 ether_addr_copy(netdev->dev_addr, mac_addr_temp);
2661 }
2662
2663 /* Check if the MAC address is valid, if not get a random one */
2664 if (!is_valid_ether_addr(netdev->dev_addr)) {
2665 eth_hw_addr_random(netdev);
2666 dev_warn(priv->dev, "using random MAC address %pM\n",
2667 netdev->dev_addr);
2668 /* Also copy this new MAC address into hdev */
2669 if (h->ae_algo->ops->set_mac_addr)
2670 h->ae_algo->ops->set_mac_addr(h, netdev->dev_addr);
2671 }
2672}
2673
2674static void hns3_nic_set_priv_ops(struct net_device *netdev)
2675{
2676 struct hns3_nic_priv *priv = netdev_priv(netdev);
2677
2678 if ((netdev->features & NETIF_F_TSO) ||
2679 (netdev->features & NETIF_F_TSO6)) {
2680 priv->ops.fill_desc = hns3_fill_desc_tso;
2681 priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso;
2682 } else {
2683 priv->ops.fill_desc = hns3_fill_desc;
2684 priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx;
2685 }
2686}
2687
2688static int hns3_client_init(struct hnae3_handle *handle)
2689{
2690 struct pci_dev *pdev = handle->pdev;
2691 struct hns3_nic_priv *priv;
2692 struct net_device *netdev;
2693 int ret;
2694
2695 netdev = alloc_etherdev_mq(sizeof(struct hns3_nic_priv),
2696 handle->kinfo.num_tqps);
2697 if (!netdev)
2698 return -ENOMEM;
2699
2700 priv = netdev_priv(netdev);
2701 priv->dev = &pdev->dev;
2702 priv->netdev = netdev;
2703 priv->ae_handle = handle;
2704
2705 handle->kinfo.netdev = netdev;
2706 handle->priv = (void *)priv;
2707
2708 hns3_init_mac_addr(netdev);
2709
2710 hns3_set_default_feature(netdev);
2711
2712 netdev->watchdog_timeo = HNS3_TX_TIMEOUT;
2713 netdev->priv_flags |= IFF_UNICAST_FLT;
2714 netdev->netdev_ops = &hns3_nic_netdev_ops;
2715 SET_NETDEV_DEV(netdev, &pdev->dev);
2716 hns3_ethtool_set_ops(netdev);
2717 hns3_nic_set_priv_ops(netdev);
2718
2719 /* Carrier off reporting is important to ethtool even BEFORE open */
2720 netif_carrier_off(netdev);
2721
2722 ret = hns3_get_ring_config(priv);
2723 if (ret) {
2724 ret = -ENOMEM;
2725 goto out_get_ring_cfg;
2726 }
2727
2728 ret = hns3_nic_init_vector_data(priv);
2729 if (ret) {
2730 ret = -ENOMEM;
2731 goto out_init_vector_data;
2732 }
2733
2734 ret = hns3_init_all_ring(priv);
2735 if (ret) {
2736 ret = -ENOMEM;
2737 goto out_init_ring_data;
2738 }
2739
2740 ret = register_netdev(netdev);
2741 if (ret) {
2742 dev_err(priv->dev, "probe register netdev fail!\n");
2743 goto out_reg_netdev_fail;
2744 }
2745
2746 return ret;
2747
2748out_reg_netdev_fail:
2749out_init_ring_data:
2750 (void)hns3_nic_uninit_vector_data(priv);
2751 priv->ring_data = NULL;
2752out_init_vector_data:
2753out_get_ring_cfg:
2754 priv->ae_handle = NULL;
2755 free_netdev(netdev);
2756 return ret;
2757}
2758
2759static void hns3_client_uninit(struct hnae3_handle *handle, bool reset)
2760{
2761 struct net_device *netdev = handle->kinfo.netdev;
2762 struct hns3_nic_priv *priv = netdev_priv(netdev);
2763 int ret;
2764
2765 if (netdev->reg_state != NETREG_UNINITIALIZED)
2766 unregister_netdev(netdev);
2767
2768 ret = hns3_nic_uninit_vector_data(priv);
2769 if (ret)
2770 netdev_err(netdev, "uninit vector error\n");
2771
2772 ret = hns3_uninit_all_ring(priv);
2773 if (ret)
2774 netdev_err(netdev, "uninit ring error\n");
2775
2776 priv->ring_data = NULL;
2777
2778 free_netdev(netdev);
2779}
2780
2781static void hns3_link_status_change(struct hnae3_handle *handle, bool linkup)
2782{
2783 struct net_device *netdev = handle->kinfo.netdev;
2784
2785 if (!netdev)
2786 return;
2787
2788 if (linkup) {
2789 netif_carrier_on(netdev);
2790 netif_tx_wake_all_queues(netdev);
2791 netdev_info(netdev, "link up\n");
2792 } else {
2793 netif_carrier_off(netdev);
2794 netif_tx_stop_all_queues(netdev);
2795 netdev_info(netdev, "link down\n");
2796 }
2797}
2798
2799const struct hnae3_client_ops client_ops = {
2800 .init_instance = hns3_client_init,
2801 .uninit_instance = hns3_client_uninit,
2802 .link_status_change = hns3_link_status_change,
2803};
2804
2805/* hns3_init_module - Driver registration routine
2806 * hns3_init_module is the first routine called when the driver is
2807 * loaded. All it does is register with the PCI subsystem.
2808 */
2809static int __init hns3_init_module(void)
2810{
2811 int ret;
2812
2813 pr_info("%s: %s - version\n", hns3_driver_name, hns3_driver_string);
2814 pr_info("%s: %s\n", hns3_driver_name, hns3_copyright);
2815
2816 client.type = HNAE3_CLIENT_KNIC;
2817 snprintf(client.name, HNAE3_CLIENT_NAME_LENGTH - 1, "%s",
2818 hns3_driver_name);
2819
2820 client.ops = &client_ops;
2821
2822 ret = hnae3_register_client(&client);
2823 if (ret)
2824 return ret;
2825
2826 ret = pci_register_driver(&hns3_driver);
2827 if (ret)
2828 hnae3_unregister_client(&client);
2829
2830 return ret;
2831}
2832module_init(hns3_init_module);
2833
2834/* hns3_exit_module - Driver exit cleanup routine
2835 * hns3_exit_module is called just before the driver is removed
2836 * from memory.
2837 */
2838static void __exit hns3_exit_module(void)
2839{
2840 pci_unregister_driver(&hns3_driver);
2841 hnae3_unregister_client(&client);
2842}
2843module_exit(hns3_exit_module);
2844
2845MODULE_DESCRIPTION("HNS3: Hisilicon Ethernet Driver");
2846MODULE_AUTHOR("Huawei Tech. Co., Ltd.");
2847MODULE_LICENSE("GPL");
2848MODULE_ALIAS("pci:hns-nic");
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