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Commit | Line | Data |
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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> | |
30d240df | 22 | #include <net/pkt_cls.h> |
76ad4f0e S |
23 | #include <net/vxlan.h> |
24 | ||
25 | #include "hnae3.h" | |
26 | #include "hns3_enet.h" | |
27 | ||
1db9b1bf | 28 | static const char hns3_driver_name[] = "hns3"; |
76ad4f0e S |
29 | const char hns3_driver_version[] = VERMAGIC_STRING; |
30 | static const char hns3_driver_string[] = | |
31 | "Hisilicon Ethernet Network Driver for Hip08 Family"; | |
32 | static const char hns3_copyright[] = "Copyright (c) 2017 Huawei Corporation."; | |
33 | static struct hnae3_client client; | |
34 | ||
35 | /* hns3_pci_tbl - PCI Device ID Table | |
36 | * | |
37 | * Last entry must be all 0s | |
38 | * | |
39 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
40 | * Class, Class Mask, private data (not used) } | |
41 | */ | |
42 | static const struct pci_device_id hns3_pci_tbl[] = { | |
43 | {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_GE), 0}, | |
44 | {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE), 0}, | |
e92a0843 | 45 | {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA), |
2daf4a65 | 46 | HNAE3_DEV_SUPPORT_ROCE_DCB_BITS}, |
e92a0843 | 47 | {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA_MACSEC), |
2daf4a65 | 48 | HNAE3_DEV_SUPPORT_ROCE_DCB_BITS}, |
e92a0843 | 49 | {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA), |
2daf4a65 | 50 | HNAE3_DEV_SUPPORT_ROCE_DCB_BITS}, |
e92a0843 | 51 | {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA_MACSEC), |
2daf4a65 | 52 | HNAE3_DEV_SUPPORT_ROCE_DCB_BITS}, |
e92a0843 | 53 | {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_MACSEC), |
2daf4a65 | 54 | HNAE3_DEV_SUPPORT_ROCE_DCB_BITS}, |
76ad4f0e S |
55 | /* required last entry */ |
56 | {0, } | |
57 | }; | |
58 | MODULE_DEVICE_TABLE(pci, hns3_pci_tbl); | |
59 | ||
60 | static irqreturn_t hns3_irq_handle(int irq, void *dev) | |
61 | { | |
62 | struct hns3_enet_tqp_vector *tqp_vector = dev; | |
63 | ||
64 | napi_schedule(&tqp_vector->napi); | |
65 | ||
66 | return IRQ_HANDLED; | |
67 | } | |
68 | ||
69 | static void hns3_nic_uninit_irq(struct hns3_nic_priv *priv) | |
70 | { | |
71 | struct hns3_enet_tqp_vector *tqp_vectors; | |
72 | unsigned int i; | |
73 | ||
74 | for (i = 0; i < priv->vector_num; i++) { | |
75 | tqp_vectors = &priv->tqp_vector[i]; | |
76 | ||
77 | if (tqp_vectors->irq_init_flag != HNS3_VECTOR_INITED) | |
78 | continue; | |
79 | ||
80 | /* release the irq resource */ | |
81 | free_irq(tqp_vectors->vector_irq, tqp_vectors); | |
82 | tqp_vectors->irq_init_flag = HNS3_VECTOR_NOT_INITED; | |
83 | } | |
84 | } | |
85 | ||
86 | static int hns3_nic_init_irq(struct hns3_nic_priv *priv) | |
87 | { | |
88 | struct hns3_enet_tqp_vector *tqp_vectors; | |
89 | int txrx_int_idx = 0; | |
90 | int rx_int_idx = 0; | |
91 | int tx_int_idx = 0; | |
92 | unsigned int i; | |
93 | int ret; | |
94 | ||
95 | for (i = 0; i < priv->vector_num; i++) { | |
96 | tqp_vectors = &priv->tqp_vector[i]; | |
97 | ||
98 | if (tqp_vectors->irq_init_flag == HNS3_VECTOR_INITED) | |
99 | continue; | |
100 | ||
101 | if (tqp_vectors->tx_group.ring && tqp_vectors->rx_group.ring) { | |
102 | snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1, | |
103 | "%s-%s-%d", priv->netdev->name, "TxRx", | |
104 | txrx_int_idx++); | |
105 | txrx_int_idx++; | |
106 | } else if (tqp_vectors->rx_group.ring) { | |
107 | snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1, | |
108 | "%s-%s-%d", priv->netdev->name, "Rx", | |
109 | rx_int_idx++); | |
110 | } else if (tqp_vectors->tx_group.ring) { | |
111 | snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1, | |
112 | "%s-%s-%d", priv->netdev->name, "Tx", | |
113 | tx_int_idx++); | |
114 | } else { | |
115 | /* Skip this unused q_vector */ | |
116 | continue; | |
117 | } | |
118 | ||
119 | tqp_vectors->name[HNAE3_INT_NAME_LEN - 1] = '\0'; | |
120 | ||
121 | ret = request_irq(tqp_vectors->vector_irq, hns3_irq_handle, 0, | |
122 | tqp_vectors->name, | |
123 | tqp_vectors); | |
124 | if (ret) { | |
125 | netdev_err(priv->netdev, "request irq(%d) fail\n", | |
126 | tqp_vectors->vector_irq); | |
127 | return ret; | |
128 | } | |
129 | ||
130 | tqp_vectors->irq_init_flag = HNS3_VECTOR_INITED; | |
131 | } | |
132 | ||
133 | return 0; | |
134 | } | |
135 | ||
136 | static void hns3_mask_vector_irq(struct hns3_enet_tqp_vector *tqp_vector, | |
137 | u32 mask_en) | |
138 | { | |
139 | writel(mask_en, tqp_vector->mask_addr); | |
140 | } | |
141 | ||
142 | static void hns3_vector_enable(struct hns3_enet_tqp_vector *tqp_vector) | |
143 | { | |
144 | napi_enable(&tqp_vector->napi); | |
145 | ||
146 | /* enable vector */ | |
147 | hns3_mask_vector_irq(tqp_vector, 1); | |
148 | } | |
149 | ||
150 | static void hns3_vector_disable(struct hns3_enet_tqp_vector *tqp_vector) | |
151 | { | |
152 | /* disable vector */ | |
153 | hns3_mask_vector_irq(tqp_vector, 0); | |
154 | ||
155 | disable_irq(tqp_vector->vector_irq); | |
156 | napi_disable(&tqp_vector->napi); | |
157 | } | |
158 | ||
159 | static void hns3_set_vector_coalesc_gl(struct hns3_enet_tqp_vector *tqp_vector, | |
160 | u32 gl_value) | |
161 | { | |
162 | /* this defines the configuration for GL (Interrupt Gap Limiter) | |
163 | * GL defines inter interrupt gap. | |
164 | * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing | |
165 | */ | |
166 | writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL0_OFFSET); | |
167 | writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL1_OFFSET); | |
168 | writel(gl_value, tqp_vector->mask_addr + HNS3_VECTOR_GL2_OFFSET); | |
169 | } | |
170 | ||
171 | static void hns3_set_vector_coalesc_rl(struct hns3_enet_tqp_vector *tqp_vector, | |
172 | u32 rl_value) | |
173 | { | |
174 | /* this defines the configuration for RL (Interrupt Rate Limiter). | |
175 | * Rl defines rate of interrupts i.e. number of interrupts-per-second | |
176 | * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing | |
177 | */ | |
178 | writel(rl_value, tqp_vector->mask_addr + HNS3_VECTOR_RL_OFFSET); | |
179 | } | |
180 | ||
181 | static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector *tqp_vector) | |
182 | { | |
183 | /* initialize the configuration for interrupt coalescing. | |
184 | * 1. GL (Interrupt Gap Limiter) | |
185 | * 2. RL (Interrupt Rate Limiter) | |
186 | */ | |
187 | ||
188 | /* Default :enable interrupt coalesce */ | |
189 | tqp_vector->rx_group.int_gl = HNS3_INT_GL_50K; | |
190 | tqp_vector->tx_group.int_gl = HNS3_INT_GL_50K; | |
191 | hns3_set_vector_coalesc_gl(tqp_vector, HNS3_INT_GL_50K); | |
192 | /* for now we are disabling Interrupt RL - we | |
193 | * will re-enable later | |
194 | */ | |
195 | hns3_set_vector_coalesc_rl(tqp_vector, 0); | |
196 | tqp_vector->rx_group.flow_level = HNS3_FLOW_LOW; | |
197 | tqp_vector->tx_group.flow_level = HNS3_FLOW_LOW; | |
198 | } | |
199 | ||
9df8f79a YL |
200 | static int hns3_nic_set_real_num_queue(struct net_device *netdev) |
201 | { | |
9780cb97 | 202 | struct hnae3_handle *h = hns3_get_handle(netdev); |
9df8f79a YL |
203 | struct hnae3_knic_private_info *kinfo = &h->kinfo; |
204 | unsigned int queue_size = kinfo->rss_size * kinfo->num_tc; | |
205 | int ret; | |
206 | ||
207 | ret = netif_set_real_num_tx_queues(netdev, queue_size); | |
208 | if (ret) { | |
209 | netdev_err(netdev, | |
210 | "netif_set_real_num_tx_queues fail, ret=%d!\n", | |
211 | ret); | |
212 | return ret; | |
213 | } | |
214 | ||
215 | ret = netif_set_real_num_rx_queues(netdev, queue_size); | |
216 | if (ret) { | |
217 | netdev_err(netdev, | |
218 | "netif_set_real_num_rx_queues fail, ret=%d!\n", ret); | |
219 | return ret; | |
220 | } | |
221 | ||
222 | return 0; | |
223 | } | |
224 | ||
76ad4f0e S |
225 | static int hns3_nic_net_up(struct net_device *netdev) |
226 | { | |
227 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
228 | struct hnae3_handle *h = priv->ae_handle; | |
229 | int i, j; | |
230 | int ret; | |
231 | ||
232 | /* get irq resource for all vectors */ | |
233 | ret = hns3_nic_init_irq(priv); | |
234 | if (ret) { | |
235 | netdev_err(netdev, "hns init irq failed! ret=%d\n", ret); | |
236 | return ret; | |
237 | } | |
238 | ||
239 | /* enable the vectors */ | |
240 | for (i = 0; i < priv->vector_num; i++) | |
241 | hns3_vector_enable(&priv->tqp_vector[i]); | |
242 | ||
243 | /* start the ae_dev */ | |
244 | ret = h->ae_algo->ops->start ? h->ae_algo->ops->start(h) : 0; | |
245 | if (ret) | |
246 | goto out_start_err; | |
247 | ||
248 | return 0; | |
249 | ||
250 | out_start_err: | |
251 | for (j = i - 1; j >= 0; j--) | |
252 | hns3_vector_disable(&priv->tqp_vector[j]); | |
253 | ||
254 | hns3_nic_uninit_irq(priv); | |
255 | ||
256 | return ret; | |
257 | } | |
258 | ||
259 | static int hns3_nic_net_open(struct net_device *netdev) | |
260 | { | |
f8fa222c | 261 | struct hns3_nic_priv *priv = netdev_priv(netdev); |
76ad4f0e S |
262 | int ret; |
263 | ||
264 | netif_carrier_off(netdev); | |
265 | ||
9df8f79a YL |
266 | ret = hns3_nic_set_real_num_queue(netdev); |
267 | if (ret) | |
76ad4f0e | 268 | return ret; |
76ad4f0e S |
269 | |
270 | ret = hns3_nic_net_up(netdev); | |
271 | if (ret) { | |
272 | netdev_err(netdev, | |
273 | "hns net up fail, ret=%d!\n", ret); | |
274 | return ret; | |
275 | } | |
276 | ||
f8fa222c | 277 | priv->last_reset_time = jiffies; |
76ad4f0e S |
278 | return 0; |
279 | } | |
280 | ||
281 | static void hns3_nic_net_down(struct net_device *netdev) | |
282 | { | |
283 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
284 | const struct hnae3_ae_ops *ops; | |
285 | int i; | |
286 | ||
287 | /* stop ae_dev */ | |
288 | ops = priv->ae_handle->ae_algo->ops; | |
289 | if (ops->stop) | |
290 | ops->stop(priv->ae_handle); | |
291 | ||
292 | /* disable vectors */ | |
293 | for (i = 0; i < priv->vector_num; i++) | |
294 | hns3_vector_disable(&priv->tqp_vector[i]); | |
295 | ||
296 | /* free irq resources */ | |
297 | hns3_nic_uninit_irq(priv); | |
298 | } | |
299 | ||
300 | static int hns3_nic_net_stop(struct net_device *netdev) | |
301 | { | |
302 | netif_tx_stop_all_queues(netdev); | |
303 | netif_carrier_off(netdev); | |
304 | ||
305 | hns3_nic_net_down(netdev); | |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
76ad4f0e S |
310 | static int hns3_nic_uc_sync(struct net_device *netdev, |
311 | const unsigned char *addr) | |
312 | { | |
9780cb97 | 313 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
314 | |
315 | if (h->ae_algo->ops->add_uc_addr) | |
316 | return h->ae_algo->ops->add_uc_addr(h, addr); | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | static int hns3_nic_uc_unsync(struct net_device *netdev, | |
322 | const unsigned char *addr) | |
323 | { | |
9780cb97 | 324 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
325 | |
326 | if (h->ae_algo->ops->rm_uc_addr) | |
327 | return h->ae_algo->ops->rm_uc_addr(h, addr); | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
332 | static int hns3_nic_mc_sync(struct net_device *netdev, | |
333 | const unsigned char *addr) | |
334 | { | |
9780cb97 | 335 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e | 336 | |
720a8478 | 337 | if (h->ae_algo->ops->add_mc_addr) |
76ad4f0e S |
338 | return h->ae_algo->ops->add_mc_addr(h, addr); |
339 | ||
340 | return 0; | |
341 | } | |
342 | ||
343 | static int hns3_nic_mc_unsync(struct net_device *netdev, | |
344 | const unsigned char *addr) | |
345 | { | |
9780cb97 | 346 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e | 347 | |
720a8478 | 348 | if (h->ae_algo->ops->rm_mc_addr) |
76ad4f0e S |
349 | return h->ae_algo->ops->rm_mc_addr(h, addr); |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
1db9b1bf | 354 | static void hns3_nic_set_rx_mode(struct net_device *netdev) |
76ad4f0e | 355 | { |
9780cb97 | 356 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
357 | |
358 | if (h->ae_algo->ops->set_promisc_mode) { | |
359 | if (netdev->flags & IFF_PROMISC) | |
360 | h->ae_algo->ops->set_promisc_mode(h, 1); | |
361 | else | |
362 | h->ae_algo->ops->set_promisc_mode(h, 0); | |
363 | } | |
364 | if (__dev_uc_sync(netdev, hns3_nic_uc_sync, hns3_nic_uc_unsync)) | |
365 | netdev_err(netdev, "sync uc address fail\n"); | |
366 | if (netdev->flags & IFF_MULTICAST) | |
367 | if (__dev_mc_sync(netdev, hns3_nic_mc_sync, hns3_nic_mc_unsync)) | |
368 | netdev_err(netdev, "sync mc address fail\n"); | |
369 | } | |
370 | ||
371 | static int hns3_set_tso(struct sk_buff *skb, u32 *paylen, | |
372 | u16 *mss, u32 *type_cs_vlan_tso) | |
373 | { | |
374 | u32 l4_offset, hdr_len; | |
375 | union l3_hdr_info l3; | |
376 | union l4_hdr_info l4; | |
377 | u32 l4_paylen; | |
378 | int ret; | |
379 | ||
380 | if (!skb_is_gso(skb)) | |
381 | return 0; | |
382 | ||
383 | ret = skb_cow_head(skb, 0); | |
384 | if (ret) | |
385 | return ret; | |
386 | ||
387 | l3.hdr = skb_network_header(skb); | |
388 | l4.hdr = skb_transport_header(skb); | |
389 | ||
390 | /* Software should clear the IPv4's checksum field when tso is | |
391 | * needed. | |
392 | */ | |
393 | if (l3.v4->version == 4) | |
394 | l3.v4->check = 0; | |
395 | ||
396 | /* tunnel packet.*/ | |
397 | if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE | | |
398 | SKB_GSO_GRE_CSUM | | |
399 | SKB_GSO_UDP_TUNNEL | | |
400 | SKB_GSO_UDP_TUNNEL_CSUM)) { | |
401 | if ((!(skb_shinfo(skb)->gso_type & | |
402 | SKB_GSO_PARTIAL)) && | |
403 | (skb_shinfo(skb)->gso_type & | |
404 | SKB_GSO_UDP_TUNNEL_CSUM)) { | |
405 | /* Software should clear the udp's checksum | |
406 | * field when tso is needed. | |
407 | */ | |
408 | l4.udp->check = 0; | |
409 | } | |
410 | /* reset l3&l4 pointers from outer to inner headers */ | |
411 | l3.hdr = skb_inner_network_header(skb); | |
412 | l4.hdr = skb_inner_transport_header(skb); | |
413 | ||
414 | /* Software should clear the IPv4's checksum field when | |
415 | * tso is needed. | |
416 | */ | |
417 | if (l3.v4->version == 4) | |
418 | l3.v4->check = 0; | |
419 | } | |
420 | ||
421 | /* normal or tunnel packet*/ | |
422 | l4_offset = l4.hdr - skb->data; | |
423 | hdr_len = (l4.tcp->doff * 4) + l4_offset; | |
424 | ||
425 | /* remove payload length from inner pseudo checksum when tso*/ | |
426 | l4_paylen = skb->len - l4_offset; | |
427 | csum_replace_by_diff(&l4.tcp->check, | |
428 | (__force __wsum)htonl(l4_paylen)); | |
429 | ||
430 | /* find the txbd field values */ | |
431 | *paylen = skb->len - hdr_len; | |
432 | hnae_set_bit(*type_cs_vlan_tso, | |
433 | HNS3_TXD_TSO_B, 1); | |
434 | ||
435 | /* get MSS for TSO */ | |
436 | *mss = skb_shinfo(skb)->gso_size; | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
1898d4e4 S |
441 | static int hns3_get_l4_protocol(struct sk_buff *skb, u8 *ol4_proto, |
442 | u8 *il4_proto) | |
76ad4f0e S |
443 | { |
444 | union { | |
445 | struct iphdr *v4; | |
446 | struct ipv6hdr *v6; | |
447 | unsigned char *hdr; | |
448 | } l3; | |
449 | unsigned char *l4_hdr; | |
450 | unsigned char *exthdr; | |
451 | u8 l4_proto_tmp; | |
452 | __be16 frag_off; | |
453 | ||
454 | /* find outer header point */ | |
455 | l3.hdr = skb_network_header(skb); | |
456 | l4_hdr = skb_inner_transport_header(skb); | |
457 | ||
458 | if (skb->protocol == htons(ETH_P_IPV6)) { | |
459 | exthdr = l3.hdr + sizeof(*l3.v6); | |
460 | l4_proto_tmp = l3.v6->nexthdr; | |
461 | if (l4_hdr != exthdr) | |
462 | ipv6_skip_exthdr(skb, exthdr - skb->data, | |
463 | &l4_proto_tmp, &frag_off); | |
464 | } else if (skb->protocol == htons(ETH_P_IP)) { | |
465 | l4_proto_tmp = l3.v4->protocol; | |
1898d4e4 S |
466 | } else { |
467 | return -EINVAL; | |
76ad4f0e S |
468 | } |
469 | ||
470 | *ol4_proto = l4_proto_tmp; | |
471 | ||
472 | /* tunnel packet */ | |
473 | if (!skb->encapsulation) { | |
474 | *il4_proto = 0; | |
1898d4e4 | 475 | return 0; |
76ad4f0e S |
476 | } |
477 | ||
478 | /* find inner header point */ | |
479 | l3.hdr = skb_inner_network_header(skb); | |
480 | l4_hdr = skb_inner_transport_header(skb); | |
481 | ||
482 | if (l3.v6->version == 6) { | |
483 | exthdr = l3.hdr + sizeof(*l3.v6); | |
484 | l4_proto_tmp = l3.v6->nexthdr; | |
485 | if (l4_hdr != exthdr) | |
486 | ipv6_skip_exthdr(skb, exthdr - skb->data, | |
487 | &l4_proto_tmp, &frag_off); | |
488 | } else if (l3.v4->version == 4) { | |
489 | l4_proto_tmp = l3.v4->protocol; | |
490 | } | |
491 | ||
492 | *il4_proto = l4_proto_tmp; | |
1898d4e4 S |
493 | |
494 | return 0; | |
76ad4f0e S |
495 | } |
496 | ||
497 | static void hns3_set_l2l3l4_len(struct sk_buff *skb, u8 ol4_proto, | |
498 | u8 il4_proto, u32 *type_cs_vlan_tso, | |
499 | u32 *ol_type_vlan_len_msec) | |
500 | { | |
501 | union { | |
502 | struct iphdr *v4; | |
503 | struct ipv6hdr *v6; | |
504 | unsigned char *hdr; | |
505 | } l3; | |
506 | union { | |
507 | struct tcphdr *tcp; | |
508 | struct udphdr *udp; | |
509 | struct gre_base_hdr *gre; | |
510 | unsigned char *hdr; | |
511 | } l4; | |
512 | unsigned char *l2_hdr; | |
513 | u8 l4_proto = ol4_proto; | |
514 | u32 ol2_len; | |
515 | u32 ol3_len; | |
516 | u32 ol4_len; | |
517 | u32 l2_len; | |
518 | u32 l3_len; | |
519 | ||
520 | l3.hdr = skb_network_header(skb); | |
521 | l4.hdr = skb_transport_header(skb); | |
522 | ||
523 | /* compute L2 header size for normal packet, defined in 2 Bytes */ | |
524 | l2_len = l3.hdr - skb->data; | |
525 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M, | |
526 | HNS3_TXD_L2LEN_S, l2_len >> 1); | |
527 | ||
528 | /* tunnel packet*/ | |
529 | if (skb->encapsulation) { | |
530 | /* compute OL2 header size, defined in 2 Bytes */ | |
531 | ol2_len = l2_len; | |
532 | hnae_set_field(*ol_type_vlan_len_msec, | |
533 | HNS3_TXD_L2LEN_M, | |
534 | HNS3_TXD_L2LEN_S, ol2_len >> 1); | |
535 | ||
536 | /* compute OL3 header size, defined in 4 Bytes */ | |
537 | ol3_len = l4.hdr - l3.hdr; | |
538 | hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L3LEN_M, | |
539 | HNS3_TXD_L3LEN_S, ol3_len >> 2); | |
540 | ||
541 | /* MAC in UDP, MAC in GRE (0x6558)*/ | |
542 | if ((ol4_proto == IPPROTO_UDP) || (ol4_proto == IPPROTO_GRE)) { | |
543 | /* switch MAC header ptr from outer to inner header.*/ | |
544 | l2_hdr = skb_inner_mac_header(skb); | |
545 | ||
546 | /* compute OL4 header size, defined in 4 Bytes. */ | |
547 | ol4_len = l2_hdr - l4.hdr; | |
548 | hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L4LEN_M, | |
549 | HNS3_TXD_L4LEN_S, ol4_len >> 2); | |
550 | ||
551 | /* switch IP header ptr from outer to inner header */ | |
552 | l3.hdr = skb_inner_network_header(skb); | |
553 | ||
554 | /* compute inner l2 header size, defined in 2 Bytes. */ | |
555 | l2_len = l3.hdr - l2_hdr; | |
556 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M, | |
557 | HNS3_TXD_L2LEN_S, l2_len >> 1); | |
558 | } else { | |
559 | /* skb packet types not supported by hardware, | |
560 | * txbd len fild doesn't be filled. | |
561 | */ | |
562 | return; | |
563 | } | |
564 | ||
565 | /* switch L4 header pointer from outer to inner */ | |
566 | l4.hdr = skb_inner_transport_header(skb); | |
567 | ||
568 | l4_proto = il4_proto; | |
569 | } | |
570 | ||
571 | /* compute inner(/normal) L3 header size, defined in 4 Bytes */ | |
572 | l3_len = l4.hdr - l3.hdr; | |
573 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3LEN_M, | |
574 | HNS3_TXD_L3LEN_S, l3_len >> 2); | |
575 | ||
576 | /* compute inner(/normal) L4 header size, defined in 4 Bytes */ | |
577 | switch (l4_proto) { | |
578 | case IPPROTO_TCP: | |
579 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M, | |
580 | HNS3_TXD_L4LEN_S, l4.tcp->doff); | |
581 | break; | |
582 | case IPPROTO_SCTP: | |
583 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M, | |
584 | HNS3_TXD_L4LEN_S, (sizeof(struct sctphdr) >> 2)); | |
585 | break; | |
586 | case IPPROTO_UDP: | |
587 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M, | |
588 | HNS3_TXD_L4LEN_S, (sizeof(struct udphdr) >> 2)); | |
589 | break; | |
590 | default: | |
591 | /* skb packet types not supported by hardware, | |
592 | * txbd len fild doesn't be filled. | |
593 | */ | |
594 | return; | |
595 | } | |
596 | } | |
597 | ||
598 | static int hns3_set_l3l4_type_csum(struct sk_buff *skb, u8 ol4_proto, | |
599 | u8 il4_proto, u32 *type_cs_vlan_tso, | |
600 | u32 *ol_type_vlan_len_msec) | |
601 | { | |
602 | union { | |
603 | struct iphdr *v4; | |
604 | struct ipv6hdr *v6; | |
605 | unsigned char *hdr; | |
606 | } l3; | |
607 | u32 l4_proto = ol4_proto; | |
608 | ||
609 | l3.hdr = skb_network_header(skb); | |
610 | ||
611 | /* define OL3 type and tunnel type(OL4).*/ | |
612 | if (skb->encapsulation) { | |
613 | /* define outer network header type.*/ | |
614 | if (skb->protocol == htons(ETH_P_IP)) { | |
615 | if (skb_is_gso(skb)) | |
616 | hnae_set_field(*ol_type_vlan_len_msec, | |
617 | HNS3_TXD_OL3T_M, HNS3_TXD_OL3T_S, | |
618 | HNS3_OL3T_IPV4_CSUM); | |
619 | else | |
620 | hnae_set_field(*ol_type_vlan_len_msec, | |
621 | HNS3_TXD_OL3T_M, HNS3_TXD_OL3T_S, | |
622 | HNS3_OL3T_IPV4_NO_CSUM); | |
623 | ||
624 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
625 | hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_OL3T_M, | |
626 | HNS3_TXD_OL3T_S, HNS3_OL3T_IPV6); | |
627 | } | |
628 | ||
629 | /* define tunnel type(OL4).*/ | |
630 | switch (l4_proto) { | |
631 | case IPPROTO_UDP: | |
632 | hnae_set_field(*ol_type_vlan_len_msec, | |
633 | HNS3_TXD_TUNTYPE_M, | |
634 | HNS3_TXD_TUNTYPE_S, | |
635 | HNS3_TUN_MAC_IN_UDP); | |
636 | break; | |
637 | case IPPROTO_GRE: | |
638 | hnae_set_field(*ol_type_vlan_len_msec, | |
639 | HNS3_TXD_TUNTYPE_M, | |
640 | HNS3_TXD_TUNTYPE_S, | |
641 | HNS3_TUN_NVGRE); | |
642 | break; | |
643 | default: | |
644 | /* drop the skb tunnel packet if hardware don't support, | |
645 | * because hardware can't calculate csum when TSO. | |
646 | */ | |
647 | if (skb_is_gso(skb)) | |
648 | return -EDOM; | |
649 | ||
650 | /* the stack computes the IP header already, | |
651 | * driver calculate l4 checksum when not TSO. | |
652 | */ | |
653 | skb_checksum_help(skb); | |
654 | return 0; | |
655 | } | |
656 | ||
657 | l3.hdr = skb_inner_network_header(skb); | |
658 | l4_proto = il4_proto; | |
659 | } | |
660 | ||
661 | if (l3.v4->version == 4) { | |
662 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M, | |
663 | HNS3_TXD_L3T_S, HNS3_L3T_IPV4); | |
664 | ||
665 | /* the stack computes the IP header already, the only time we | |
666 | * need the hardware to recompute it is in the case of TSO. | |
667 | */ | |
668 | if (skb_is_gso(skb)) | |
669 | hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L3CS_B, 1); | |
670 | ||
671 | hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1); | |
672 | } else if (l3.v6->version == 6) { | |
673 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M, | |
674 | HNS3_TXD_L3T_S, HNS3_L3T_IPV6); | |
675 | hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1); | |
676 | } | |
677 | ||
678 | switch (l4_proto) { | |
679 | case IPPROTO_TCP: | |
680 | hnae_set_field(*type_cs_vlan_tso, | |
681 | HNS3_TXD_L4T_M, | |
682 | HNS3_TXD_L4T_S, | |
683 | HNS3_L4T_TCP); | |
684 | break; | |
685 | case IPPROTO_UDP: | |
686 | hnae_set_field(*type_cs_vlan_tso, | |
687 | HNS3_TXD_L4T_M, | |
688 | HNS3_TXD_L4T_S, | |
689 | HNS3_L4T_UDP); | |
690 | break; | |
691 | case IPPROTO_SCTP: | |
692 | hnae_set_field(*type_cs_vlan_tso, | |
693 | HNS3_TXD_L4T_M, | |
694 | HNS3_TXD_L4T_S, | |
695 | HNS3_L4T_SCTP); | |
696 | break; | |
697 | default: | |
698 | /* drop the skb tunnel packet if hardware don't support, | |
699 | * because hardware can't calculate csum when TSO. | |
700 | */ | |
701 | if (skb_is_gso(skb)) | |
702 | return -EDOM; | |
703 | ||
704 | /* the stack computes the IP header already, | |
705 | * driver calculate l4 checksum when not TSO. | |
706 | */ | |
707 | skb_checksum_help(skb); | |
708 | return 0; | |
709 | } | |
710 | ||
711 | return 0; | |
712 | } | |
713 | ||
714 | static void hns3_set_txbd_baseinfo(u16 *bdtp_fe_sc_vld_ra_ri, int frag_end) | |
715 | { | |
716 | /* Config bd buffer end */ | |
717 | hnae_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_BDTYPE_M, | |
718 | HNS3_TXD_BDTYPE_M, 0); | |
719 | hnae_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_FE_B, !!frag_end); | |
720 | hnae_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_VLD_B, 1); | |
7036d26f | 721 | hnae_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_SC_M, HNS3_TXD_SC_S, 0); |
76ad4f0e S |
722 | } |
723 | ||
724 | static int hns3_fill_desc(struct hns3_enet_ring *ring, void *priv, | |
725 | int size, dma_addr_t dma, int frag_end, | |
726 | enum hns_desc_type type) | |
727 | { | |
728 | struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; | |
729 | struct hns3_desc *desc = &ring->desc[ring->next_to_use]; | |
730 | u32 ol_type_vlan_len_msec = 0; | |
731 | u16 bdtp_fe_sc_vld_ra_ri = 0; | |
732 | u32 type_cs_vlan_tso = 0; | |
733 | struct sk_buff *skb; | |
734 | u32 paylen = 0; | |
735 | u16 mss = 0; | |
736 | __be16 protocol; | |
737 | u8 ol4_proto; | |
738 | u8 il4_proto; | |
739 | int ret; | |
740 | ||
741 | /* The txbd's baseinfo of DESC_TYPE_PAGE & DESC_TYPE_SKB */ | |
742 | desc_cb->priv = priv; | |
743 | desc_cb->length = size; | |
744 | desc_cb->dma = dma; | |
745 | desc_cb->type = type; | |
746 | ||
747 | /* now, fill the descriptor */ | |
748 | desc->addr = cpu_to_le64(dma); | |
749 | desc->tx.send_size = cpu_to_le16((u16)size); | |
750 | hns3_set_txbd_baseinfo(&bdtp_fe_sc_vld_ra_ri, frag_end); | |
751 | desc->tx.bdtp_fe_sc_vld_ra_ri = cpu_to_le16(bdtp_fe_sc_vld_ra_ri); | |
752 | ||
753 | if (type == DESC_TYPE_SKB) { | |
754 | skb = (struct sk_buff *)priv; | |
a90bb9a5 | 755 | paylen = skb->len; |
76ad4f0e S |
756 | |
757 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
758 | skb_reset_mac_len(skb); | |
759 | protocol = skb->protocol; | |
760 | ||
761 | /* vlan packet*/ | |
762 | if (protocol == htons(ETH_P_8021Q)) { | |
763 | protocol = vlan_get_protocol(skb); | |
764 | skb->protocol = protocol; | |
765 | } | |
1898d4e4 S |
766 | ret = hns3_get_l4_protocol(skb, &ol4_proto, &il4_proto); |
767 | if (ret) | |
768 | return ret; | |
76ad4f0e S |
769 | hns3_set_l2l3l4_len(skb, ol4_proto, il4_proto, |
770 | &type_cs_vlan_tso, | |
771 | &ol_type_vlan_len_msec); | |
772 | ret = hns3_set_l3l4_type_csum(skb, ol4_proto, il4_proto, | |
773 | &type_cs_vlan_tso, | |
774 | &ol_type_vlan_len_msec); | |
775 | if (ret) | |
776 | return ret; | |
777 | ||
778 | ret = hns3_set_tso(skb, &paylen, &mss, | |
779 | &type_cs_vlan_tso); | |
780 | if (ret) | |
781 | return ret; | |
782 | } | |
783 | ||
784 | /* Set txbd */ | |
785 | desc->tx.ol_type_vlan_len_msec = | |
786 | cpu_to_le32(ol_type_vlan_len_msec); | |
787 | desc->tx.type_cs_vlan_tso_len = | |
788 | cpu_to_le32(type_cs_vlan_tso); | |
a90bb9a5 | 789 | desc->tx.paylen = cpu_to_le32(paylen); |
76ad4f0e S |
790 | desc->tx.mss = cpu_to_le16(mss); |
791 | } | |
792 | ||
793 | /* move ring pointer to next.*/ | |
794 | ring_ptr_move_fw(ring, next_to_use); | |
795 | ||
796 | return 0; | |
797 | } | |
798 | ||
799 | static int hns3_fill_desc_tso(struct hns3_enet_ring *ring, void *priv, | |
800 | int size, dma_addr_t dma, int frag_end, | |
801 | enum hns_desc_type type) | |
802 | { | |
803 | unsigned int frag_buf_num; | |
804 | unsigned int k; | |
805 | int sizeoflast; | |
806 | int ret; | |
807 | ||
808 | frag_buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE; | |
809 | sizeoflast = size % HNS3_MAX_BD_SIZE; | |
810 | sizeoflast = sizeoflast ? sizeoflast : HNS3_MAX_BD_SIZE; | |
811 | ||
812 | /* When the frag size is bigger than hardware, split this frag */ | |
813 | for (k = 0; k < frag_buf_num; k++) { | |
814 | ret = hns3_fill_desc(ring, priv, | |
815 | (k == frag_buf_num - 1) ? | |
816 | sizeoflast : HNS3_MAX_BD_SIZE, | |
817 | dma + HNS3_MAX_BD_SIZE * k, | |
818 | frag_end && (k == frag_buf_num - 1) ? 1 : 0, | |
819 | (type == DESC_TYPE_SKB && !k) ? | |
820 | DESC_TYPE_SKB : DESC_TYPE_PAGE); | |
821 | if (ret) | |
822 | return ret; | |
823 | } | |
824 | ||
825 | return 0; | |
826 | } | |
827 | ||
828 | static int hns3_nic_maybe_stop_tso(struct sk_buff **out_skb, int *bnum, | |
829 | struct hns3_enet_ring *ring) | |
830 | { | |
831 | struct sk_buff *skb = *out_skb; | |
832 | struct skb_frag_struct *frag; | |
833 | int bdnum_for_frag; | |
834 | int frag_num; | |
835 | int buf_num; | |
836 | int size; | |
837 | int i; | |
838 | ||
839 | size = skb_headlen(skb); | |
840 | buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE; | |
841 | ||
842 | frag_num = skb_shinfo(skb)->nr_frags; | |
843 | for (i = 0; i < frag_num; i++) { | |
844 | frag = &skb_shinfo(skb)->frags[i]; | |
845 | size = skb_frag_size(frag); | |
846 | bdnum_for_frag = | |
847 | (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE; | |
848 | if (bdnum_for_frag > HNS3_MAX_BD_PER_FRAG) | |
849 | return -ENOMEM; | |
850 | ||
851 | buf_num += bdnum_for_frag; | |
852 | } | |
853 | ||
854 | if (buf_num > ring_space(ring)) | |
855 | return -EBUSY; | |
856 | ||
857 | *bnum = buf_num; | |
858 | return 0; | |
859 | } | |
860 | ||
861 | static int hns3_nic_maybe_stop_tx(struct sk_buff **out_skb, int *bnum, | |
862 | struct hns3_enet_ring *ring) | |
863 | { | |
864 | struct sk_buff *skb = *out_skb; | |
865 | int buf_num; | |
866 | ||
867 | /* No. of segments (plus a header) */ | |
868 | buf_num = skb_shinfo(skb)->nr_frags + 1; | |
869 | ||
870 | if (buf_num > ring_space(ring)) | |
871 | return -EBUSY; | |
872 | ||
873 | *bnum = buf_num; | |
874 | ||
875 | return 0; | |
876 | } | |
877 | ||
878 | static void hns_nic_dma_unmap(struct hns3_enet_ring *ring, int next_to_use_orig) | |
879 | { | |
880 | struct device *dev = ring_to_dev(ring); | |
881 | unsigned int i; | |
882 | ||
883 | for (i = 0; i < ring->desc_num; i++) { | |
884 | /* check if this is where we started */ | |
885 | if (ring->next_to_use == next_to_use_orig) | |
886 | break; | |
887 | ||
888 | /* unmap the descriptor dma address */ | |
889 | if (ring->desc_cb[ring->next_to_use].type == DESC_TYPE_SKB) | |
890 | dma_unmap_single(dev, | |
891 | ring->desc_cb[ring->next_to_use].dma, | |
892 | ring->desc_cb[ring->next_to_use].length, | |
893 | DMA_TO_DEVICE); | |
894 | else | |
895 | dma_unmap_page(dev, | |
896 | ring->desc_cb[ring->next_to_use].dma, | |
897 | ring->desc_cb[ring->next_to_use].length, | |
898 | DMA_TO_DEVICE); | |
899 | ||
900 | /* rollback one */ | |
901 | ring_ptr_move_bw(ring, next_to_use); | |
902 | } | |
903 | } | |
904 | ||
d43e5aca | 905 | netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev) |
76ad4f0e S |
906 | { |
907 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
908 | struct hns3_nic_ring_data *ring_data = | |
909 | &tx_ring_data(priv, skb->queue_mapping); | |
910 | struct hns3_enet_ring *ring = ring_data->ring; | |
911 | struct device *dev = priv->dev; | |
912 | struct netdev_queue *dev_queue; | |
913 | struct skb_frag_struct *frag; | |
914 | int next_to_use_head; | |
915 | int next_to_use_frag; | |
916 | dma_addr_t dma; | |
917 | int buf_num; | |
918 | int seg_num; | |
919 | int size; | |
920 | int ret; | |
921 | int i; | |
922 | ||
923 | /* Prefetch the data used later */ | |
924 | prefetch(skb->data); | |
925 | ||
926 | switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) { | |
927 | case -EBUSY: | |
928 | u64_stats_update_begin(&ring->syncp); | |
929 | ring->stats.tx_busy++; | |
930 | u64_stats_update_end(&ring->syncp); | |
931 | ||
932 | goto out_net_tx_busy; | |
933 | case -ENOMEM: | |
934 | u64_stats_update_begin(&ring->syncp); | |
935 | ring->stats.sw_err_cnt++; | |
936 | u64_stats_update_end(&ring->syncp); | |
937 | netdev_err(netdev, "no memory to xmit!\n"); | |
938 | ||
939 | goto out_err_tx_ok; | |
940 | default: | |
941 | break; | |
942 | } | |
943 | ||
944 | /* No. of segments (plus a header) */ | |
945 | seg_num = skb_shinfo(skb)->nr_frags + 1; | |
946 | /* Fill the first part */ | |
947 | size = skb_headlen(skb); | |
948 | ||
949 | next_to_use_head = ring->next_to_use; | |
950 | ||
951 | dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE); | |
952 | if (dma_mapping_error(dev, dma)) { | |
953 | netdev_err(netdev, "TX head DMA map failed\n"); | |
954 | ring->stats.sw_err_cnt++; | |
955 | goto out_err_tx_ok; | |
956 | } | |
957 | ||
958 | ret = priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0, | |
959 | DESC_TYPE_SKB); | |
960 | if (ret) | |
961 | goto head_dma_map_err; | |
962 | ||
963 | next_to_use_frag = ring->next_to_use; | |
964 | /* Fill the fragments */ | |
965 | for (i = 1; i < seg_num; i++) { | |
966 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
967 | size = skb_frag_size(frag); | |
968 | dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE); | |
969 | if (dma_mapping_error(dev, dma)) { | |
970 | netdev_err(netdev, "TX frag(%d) DMA map failed\n", i); | |
971 | ring->stats.sw_err_cnt++; | |
972 | goto frag_dma_map_err; | |
973 | } | |
974 | ret = priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma, | |
975 | seg_num - 1 == i ? 1 : 0, | |
976 | DESC_TYPE_PAGE); | |
977 | ||
978 | if (ret) | |
979 | goto frag_dma_map_err; | |
980 | } | |
981 | ||
982 | /* Complete translate all packets */ | |
983 | dev_queue = netdev_get_tx_queue(netdev, ring_data->queue_index); | |
984 | netdev_tx_sent_queue(dev_queue, skb->len); | |
985 | ||
986 | wmb(); /* Commit all data before submit */ | |
987 | ||
988 | hnae_queue_xmit(ring->tqp, buf_num); | |
989 | ||
990 | return NETDEV_TX_OK; | |
991 | ||
992 | frag_dma_map_err: | |
993 | hns_nic_dma_unmap(ring, next_to_use_frag); | |
994 | ||
995 | head_dma_map_err: | |
996 | hns_nic_dma_unmap(ring, next_to_use_head); | |
997 | ||
998 | out_err_tx_ok: | |
999 | dev_kfree_skb_any(skb); | |
1000 | return NETDEV_TX_OK; | |
1001 | ||
1002 | out_net_tx_busy: | |
1003 | netif_stop_subqueue(netdev, ring_data->queue_index); | |
1004 | smp_mb(); /* Commit all data before submit */ | |
1005 | ||
1006 | return NETDEV_TX_BUSY; | |
1007 | } | |
1008 | ||
1009 | static int hns3_nic_net_set_mac_address(struct net_device *netdev, void *p) | |
1010 | { | |
9780cb97 | 1011 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
1012 | struct sockaddr *mac_addr = p; |
1013 | int ret; | |
1014 | ||
1015 | if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data)) | |
1016 | return -EADDRNOTAVAIL; | |
1017 | ||
1018 | ret = h->ae_algo->ops->set_mac_addr(h, mac_addr->sa_data); | |
1019 | if (ret) { | |
1020 | netdev_err(netdev, "set_mac_address fail, ret=%d!\n", ret); | |
1021 | return ret; | |
1022 | } | |
1023 | ||
1024 | ether_addr_copy(netdev->dev_addr, mac_addr->sa_data); | |
1025 | ||
1026 | return 0; | |
1027 | } | |
1028 | ||
1029 | static int hns3_nic_set_features(struct net_device *netdev, | |
1030 | netdev_features_t features) | |
1031 | { | |
1032 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
1033 | ||
1034 | if (features & (NETIF_F_TSO | NETIF_F_TSO6)) { | |
1035 | priv->ops.fill_desc = hns3_fill_desc_tso; | |
1036 | priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso; | |
1037 | } else { | |
1038 | priv->ops.fill_desc = hns3_fill_desc; | |
1039 | priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx; | |
1040 | } | |
1041 | ||
1042 | netdev->features = features; | |
1043 | return 0; | |
1044 | } | |
1045 | ||
1046 | static void | |
1047 | hns3_nic_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) | |
1048 | { | |
1049 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
1050 | int queue_num = priv->ae_handle->kinfo.num_tqps; | |
1051 | struct hns3_enet_ring *ring; | |
1052 | unsigned int start; | |
1053 | unsigned int idx; | |
1054 | u64 tx_bytes = 0; | |
1055 | u64 rx_bytes = 0; | |
1056 | u64 tx_pkts = 0; | |
1057 | u64 rx_pkts = 0; | |
1058 | ||
1059 | for (idx = 0; idx < queue_num; idx++) { | |
1060 | /* fetch the tx stats */ | |
1061 | ring = priv->ring_data[idx].ring; | |
1062 | do { | |
d36d36ce | 1063 | start = u64_stats_fetch_begin_irq(&ring->syncp); |
76ad4f0e S |
1064 | tx_bytes += ring->stats.tx_bytes; |
1065 | tx_pkts += ring->stats.tx_pkts; | |
1066 | } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); | |
1067 | ||
1068 | /* fetch the rx stats */ | |
1069 | ring = priv->ring_data[idx + queue_num].ring; | |
1070 | do { | |
d36d36ce | 1071 | start = u64_stats_fetch_begin_irq(&ring->syncp); |
76ad4f0e S |
1072 | rx_bytes += ring->stats.rx_bytes; |
1073 | rx_pkts += ring->stats.rx_pkts; | |
1074 | } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); | |
1075 | } | |
1076 | ||
1077 | stats->tx_bytes = tx_bytes; | |
1078 | stats->tx_packets = tx_pkts; | |
1079 | stats->rx_bytes = rx_bytes; | |
1080 | stats->rx_packets = rx_pkts; | |
1081 | ||
1082 | stats->rx_errors = netdev->stats.rx_errors; | |
1083 | stats->multicast = netdev->stats.multicast; | |
1084 | stats->rx_length_errors = netdev->stats.rx_length_errors; | |
1085 | stats->rx_crc_errors = netdev->stats.rx_crc_errors; | |
1086 | stats->rx_missed_errors = netdev->stats.rx_missed_errors; | |
1087 | ||
1088 | stats->tx_errors = netdev->stats.tx_errors; | |
1089 | stats->rx_dropped = netdev->stats.rx_dropped; | |
1090 | stats->tx_dropped = netdev->stats.tx_dropped; | |
1091 | stats->collisions = netdev->stats.collisions; | |
1092 | stats->rx_over_errors = netdev->stats.rx_over_errors; | |
1093 | stats->rx_frame_errors = netdev->stats.rx_frame_errors; | |
1094 | stats->rx_fifo_errors = netdev->stats.rx_fifo_errors; | |
1095 | stats->tx_aborted_errors = netdev->stats.tx_aborted_errors; | |
1096 | stats->tx_carrier_errors = netdev->stats.tx_carrier_errors; | |
1097 | stats->tx_fifo_errors = netdev->stats.tx_fifo_errors; | |
1098 | stats->tx_heartbeat_errors = netdev->stats.tx_heartbeat_errors; | |
1099 | stats->tx_window_errors = netdev->stats.tx_window_errors; | |
1100 | stats->rx_compressed = netdev->stats.rx_compressed; | |
1101 | stats->tx_compressed = netdev->stats.tx_compressed; | |
1102 | } | |
1103 | ||
1104 | static void hns3_add_tunnel_port(struct net_device *netdev, u16 port, | |
1105 | enum hns3_udp_tnl_type type) | |
1106 | { | |
1107 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
1108 | struct hns3_udp_tunnel *udp_tnl = &priv->udp_tnl[type]; | |
1109 | struct hnae3_handle *h = priv->ae_handle; | |
1110 | ||
1111 | if (udp_tnl->used && udp_tnl->dst_port == port) { | |
1112 | udp_tnl->used++; | |
1113 | return; | |
1114 | } | |
1115 | ||
1116 | if (udp_tnl->used) { | |
1117 | netdev_warn(netdev, | |
1118 | "UDP tunnel [%d], port [%d] offload\n", type, port); | |
1119 | return; | |
1120 | } | |
1121 | ||
1122 | udp_tnl->dst_port = port; | |
1123 | udp_tnl->used = 1; | |
1124 | /* TBD send command to hardware to add port */ | |
1125 | if (h->ae_algo->ops->add_tunnel_udp) | |
1126 | h->ae_algo->ops->add_tunnel_udp(h, port); | |
1127 | } | |
1128 | ||
1129 | static void hns3_del_tunnel_port(struct net_device *netdev, u16 port, | |
1130 | enum hns3_udp_tnl_type type) | |
1131 | { | |
1132 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
1133 | struct hns3_udp_tunnel *udp_tnl = &priv->udp_tnl[type]; | |
1134 | struct hnae3_handle *h = priv->ae_handle; | |
1135 | ||
1136 | if (!udp_tnl->used || udp_tnl->dst_port != port) { | |
1137 | netdev_warn(netdev, | |
1138 | "Invalid UDP tunnel port %d\n", port); | |
1139 | return; | |
1140 | } | |
1141 | ||
1142 | udp_tnl->used--; | |
1143 | if (udp_tnl->used) | |
1144 | return; | |
1145 | ||
1146 | udp_tnl->dst_port = 0; | |
1147 | /* TBD send command to hardware to del port */ | |
1148 | if (h->ae_algo->ops->del_tunnel_udp) | |
9537e7cb | 1149 | h->ae_algo->ops->del_tunnel_udp(h, port); |
76ad4f0e S |
1150 | } |
1151 | ||
1152 | /* hns3_nic_udp_tunnel_add - Get notifiacetion about UDP tunnel ports | |
1153 | * @netdev: This physical ports's netdev | |
1154 | * @ti: Tunnel information | |
1155 | */ | |
1156 | static void hns3_nic_udp_tunnel_add(struct net_device *netdev, | |
1157 | struct udp_tunnel_info *ti) | |
1158 | { | |
1159 | u16 port_n = ntohs(ti->port); | |
1160 | ||
1161 | switch (ti->type) { | |
1162 | case UDP_TUNNEL_TYPE_VXLAN: | |
1163 | hns3_add_tunnel_port(netdev, port_n, HNS3_UDP_TNL_VXLAN); | |
1164 | break; | |
1165 | case UDP_TUNNEL_TYPE_GENEVE: | |
1166 | hns3_add_tunnel_port(netdev, port_n, HNS3_UDP_TNL_GENEVE); | |
1167 | break; | |
1168 | default: | |
1169 | netdev_err(netdev, "unsupported tunnel type %d\n", ti->type); | |
1170 | break; | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | static void hns3_nic_udp_tunnel_del(struct net_device *netdev, | |
1175 | struct udp_tunnel_info *ti) | |
1176 | { | |
1177 | u16 port_n = ntohs(ti->port); | |
1178 | ||
1179 | switch (ti->type) { | |
1180 | case UDP_TUNNEL_TYPE_VXLAN: | |
1181 | hns3_del_tunnel_port(netdev, port_n, HNS3_UDP_TNL_VXLAN); | |
1182 | break; | |
1183 | case UDP_TUNNEL_TYPE_GENEVE: | |
1184 | hns3_del_tunnel_port(netdev, port_n, HNS3_UDP_TNL_GENEVE); | |
1185 | break; | |
1186 | default: | |
1187 | break; | |
1188 | } | |
1189 | } | |
1190 | ||
30d240df | 1191 | static int hns3_setup_tc(struct net_device *netdev, void *type_data) |
76ad4f0e | 1192 | { |
30d240df | 1193 | struct tc_mqprio_qopt_offload *mqprio_qopt = type_data; |
9780cb97 | 1194 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e | 1195 | struct hnae3_knic_private_info *kinfo = &h->kinfo; |
30d240df YL |
1196 | u8 *prio_tc = mqprio_qopt->qopt.prio_tc_map; |
1197 | u8 tc = mqprio_qopt->qopt.num_tc; | |
1198 | u16 mode = mqprio_qopt->mode; | |
1199 | u8 hw = mqprio_qopt->qopt.hw; | |
1200 | bool if_running; | |
76ad4f0e S |
1201 | unsigned int i; |
1202 | int ret; | |
1203 | ||
30d240df YL |
1204 | if (!((hw == TC_MQPRIO_HW_OFFLOAD_TCS && |
1205 | mode == TC_MQPRIO_MODE_CHANNEL) || (!hw && tc == 0))) | |
1206 | return -EOPNOTSUPP; | |
1207 | ||
76ad4f0e S |
1208 | if (tc > HNAE3_MAX_TC) |
1209 | return -EINVAL; | |
1210 | ||
76ad4f0e S |
1211 | if (!netdev) |
1212 | return -EINVAL; | |
1213 | ||
30d240df YL |
1214 | if_running = netif_running(netdev); |
1215 | if (if_running) { | |
1216 | hns3_nic_net_stop(netdev); | |
1217 | msleep(100); | |
76ad4f0e S |
1218 | } |
1219 | ||
30d240df YL |
1220 | ret = (kinfo->dcb_ops && kinfo->dcb_ops->setup_tc) ? |
1221 | kinfo->dcb_ops->setup_tc(h, tc, prio_tc) : -EOPNOTSUPP; | |
76ad4f0e | 1222 | if (ret) |
30d240df YL |
1223 | goto out; |
1224 | ||
1225 | if (tc <= 1) { | |
1226 | netdev_reset_tc(netdev); | |
1227 | } else { | |
1228 | ret = netdev_set_num_tc(netdev, tc); | |
1229 | if (ret) | |
1230 | goto out; | |
1231 | ||
1232 | for (i = 0; i < HNAE3_MAX_TC; i++) { | |
1233 | if (!kinfo->tc_info[i].enable) | |
1234 | continue; | |
76ad4f0e | 1235 | |
76ad4f0e S |
1236 | netdev_set_tc_queue(netdev, |
1237 | kinfo->tc_info[i].tc, | |
1238 | kinfo->tc_info[i].tqp_count, | |
1239 | kinfo->tc_info[i].tqp_offset); | |
30d240df | 1240 | } |
76ad4f0e S |
1241 | } |
1242 | ||
30d240df YL |
1243 | ret = hns3_nic_set_real_num_queue(netdev); |
1244 | ||
1245 | out: | |
1246 | if (if_running) | |
1247 | hns3_nic_net_open(netdev); | |
1248 | ||
1249 | return ret; | |
76ad4f0e S |
1250 | } |
1251 | ||
2572ac53 | 1252 | static int hns3_nic_setup_tc(struct net_device *dev, enum tc_setup_type type, |
de4784ca | 1253 | void *type_data) |
76ad4f0e | 1254 | { |
575ed7d3 | 1255 | if (type != TC_SETUP_QDISC_MQPRIO) |
38cf0426 | 1256 | return -EOPNOTSUPP; |
76ad4f0e | 1257 | |
30d240df | 1258 | return hns3_setup_tc(dev, type_data); |
76ad4f0e S |
1259 | } |
1260 | ||
1261 | static int hns3_vlan_rx_add_vid(struct net_device *netdev, | |
1262 | __be16 proto, u16 vid) | |
1263 | { | |
9780cb97 | 1264 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
1265 | int ret = -EIO; |
1266 | ||
1267 | if (h->ae_algo->ops->set_vlan_filter) | |
1268 | ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, false); | |
1269 | ||
1270 | return ret; | |
1271 | } | |
1272 | ||
1273 | static int hns3_vlan_rx_kill_vid(struct net_device *netdev, | |
1274 | __be16 proto, u16 vid) | |
1275 | { | |
9780cb97 | 1276 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
1277 | int ret = -EIO; |
1278 | ||
1279 | if (h->ae_algo->ops->set_vlan_filter) | |
1280 | ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, true); | |
1281 | ||
1282 | return ret; | |
1283 | } | |
1284 | ||
1285 | static int hns3_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, | |
1286 | u8 qos, __be16 vlan_proto) | |
1287 | { | |
9780cb97 | 1288 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
1289 | int ret = -EIO; |
1290 | ||
1291 | if (h->ae_algo->ops->set_vf_vlan_filter) | |
1292 | ret = h->ae_algo->ops->set_vf_vlan_filter(h, vf, vlan, | |
1293 | qos, vlan_proto); | |
1294 | ||
1295 | return ret; | |
1296 | } | |
1297 | ||
a8e8b7ff S |
1298 | static int hns3_nic_change_mtu(struct net_device *netdev, int new_mtu) |
1299 | { | |
9780cb97 | 1300 | struct hnae3_handle *h = hns3_get_handle(netdev); |
a8e8b7ff S |
1301 | bool if_running = netif_running(netdev); |
1302 | int ret; | |
1303 | ||
1304 | if (!h->ae_algo->ops->set_mtu) | |
1305 | return -EOPNOTSUPP; | |
1306 | ||
1307 | /* if this was called with netdev up then bring netdevice down */ | |
1308 | if (if_running) { | |
1309 | (void)hns3_nic_net_stop(netdev); | |
1310 | msleep(100); | |
1311 | } | |
1312 | ||
1313 | ret = h->ae_algo->ops->set_mtu(h, new_mtu); | |
1314 | if (ret) { | |
1315 | netdev_err(netdev, "failed to change MTU in hardware %d\n", | |
1316 | ret); | |
1317 | return ret; | |
1318 | } | |
1319 | ||
1320 | /* if the netdev was running earlier, bring it up again */ | |
1321 | if (if_running && hns3_nic_net_open(netdev)) | |
1322 | ret = -EINVAL; | |
1323 | ||
1324 | return ret; | |
1325 | } | |
1326 | ||
f8fa222c L |
1327 | static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev) |
1328 | { | |
1329 | struct hns3_nic_priv *priv = netdev_priv(ndev); | |
1330 | struct hns3_enet_ring *tx_ring = NULL; | |
1331 | int timeout_queue = 0; | |
1332 | int hw_head, hw_tail; | |
1333 | int i; | |
1334 | ||
1335 | /* Find the stopped queue the same way the stack does */ | |
1336 | for (i = 0; i < ndev->real_num_tx_queues; i++) { | |
1337 | struct netdev_queue *q; | |
1338 | unsigned long trans_start; | |
1339 | ||
1340 | q = netdev_get_tx_queue(ndev, i); | |
1341 | trans_start = q->trans_start; | |
1342 | if (netif_xmit_stopped(q) && | |
1343 | time_after(jiffies, | |
1344 | (trans_start + ndev->watchdog_timeo))) { | |
1345 | timeout_queue = i; | |
1346 | break; | |
1347 | } | |
1348 | } | |
1349 | ||
1350 | if (i == ndev->num_tx_queues) { | |
1351 | netdev_info(ndev, | |
1352 | "no netdev TX timeout queue found, timeout count: %llu\n", | |
1353 | priv->tx_timeout_count); | |
1354 | return false; | |
1355 | } | |
1356 | ||
1357 | tx_ring = priv->ring_data[timeout_queue].ring; | |
1358 | ||
1359 | hw_head = readl_relaxed(tx_ring->tqp->io_base + | |
1360 | HNS3_RING_TX_RING_HEAD_REG); | |
1361 | hw_tail = readl_relaxed(tx_ring->tqp->io_base + | |
1362 | HNS3_RING_TX_RING_TAIL_REG); | |
1363 | netdev_info(ndev, | |
1364 | "tx_timeout count: %llu, queue id: %d, SW_NTU: 0x%x, SW_NTC: 0x%x, HW_HEAD: 0x%x, HW_TAIL: 0x%x, INT: 0x%x\n", | |
1365 | priv->tx_timeout_count, | |
1366 | timeout_queue, | |
1367 | tx_ring->next_to_use, | |
1368 | tx_ring->next_to_clean, | |
1369 | hw_head, | |
1370 | hw_tail, | |
1371 | readl(tx_ring->tqp_vector->mask_addr)); | |
1372 | ||
1373 | return true; | |
1374 | } | |
1375 | ||
1376 | static void hns3_nic_net_timeout(struct net_device *ndev) | |
1377 | { | |
1378 | struct hns3_nic_priv *priv = netdev_priv(ndev); | |
1379 | unsigned long last_reset_time = priv->last_reset_time; | |
1380 | struct hnae3_handle *h = priv->ae_handle; | |
1381 | ||
1382 | if (!hns3_get_tx_timeo_queue_info(ndev)) | |
1383 | return; | |
1384 | ||
1385 | priv->tx_timeout_count++; | |
1386 | ||
1387 | /* This timeout is far away enough from last timeout, | |
1388 | * if timeout again,set the reset type to PF reset | |
1389 | */ | |
1390 | if (time_after(jiffies, (last_reset_time + 20 * HZ))) | |
1391 | priv->reset_level = HNAE3_FUNC_RESET; | |
1392 | ||
1393 | /* Don't do any new action before the next timeout */ | |
1394 | else if (time_before(jiffies, (last_reset_time + ndev->watchdog_timeo))) | |
1395 | return; | |
1396 | ||
1397 | priv->last_reset_time = jiffies; | |
1398 | ||
1399 | if (h->ae_algo->ops->reset_event) | |
1400 | h->ae_algo->ops->reset_event(h, priv->reset_level); | |
1401 | ||
1402 | priv->reset_level++; | |
1403 | if (priv->reset_level > HNAE3_GLOBAL_RESET) | |
1404 | priv->reset_level = HNAE3_GLOBAL_RESET; | |
1405 | } | |
1406 | ||
76ad4f0e S |
1407 | static const struct net_device_ops hns3_nic_netdev_ops = { |
1408 | .ndo_open = hns3_nic_net_open, | |
1409 | .ndo_stop = hns3_nic_net_stop, | |
1410 | .ndo_start_xmit = hns3_nic_net_xmit, | |
f8fa222c | 1411 | .ndo_tx_timeout = hns3_nic_net_timeout, |
76ad4f0e | 1412 | .ndo_set_mac_address = hns3_nic_net_set_mac_address, |
a8e8b7ff | 1413 | .ndo_change_mtu = hns3_nic_change_mtu, |
76ad4f0e S |
1414 | .ndo_set_features = hns3_nic_set_features, |
1415 | .ndo_get_stats64 = hns3_nic_get_stats64, | |
1416 | .ndo_setup_tc = hns3_nic_setup_tc, | |
1417 | .ndo_set_rx_mode = hns3_nic_set_rx_mode, | |
1418 | .ndo_udp_tunnel_add = hns3_nic_udp_tunnel_add, | |
1419 | .ndo_udp_tunnel_del = hns3_nic_udp_tunnel_del, | |
1420 | .ndo_vlan_rx_add_vid = hns3_vlan_rx_add_vid, | |
1421 | .ndo_vlan_rx_kill_vid = hns3_vlan_rx_kill_vid, | |
1422 | .ndo_set_vf_vlan = hns3_ndo_set_vf_vlan, | |
1423 | }; | |
1424 | ||
1425 | /* hns3_probe - Device initialization routine | |
1426 | * @pdev: PCI device information struct | |
1427 | * @ent: entry in hns3_pci_tbl | |
1428 | * | |
1429 | * hns3_probe initializes a PF identified by a pci_dev structure. | |
1430 | * The OS initialization, configuring of the PF private structure, | |
1431 | * and a hardware reset occur. | |
1432 | * | |
1433 | * Returns 0 on success, negative on failure | |
1434 | */ | |
1435 | static int hns3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
1436 | { | |
1437 | struct hnae3_ae_dev *ae_dev; | |
1438 | int ret; | |
1439 | ||
1440 | ae_dev = devm_kzalloc(&pdev->dev, sizeof(*ae_dev), | |
1441 | GFP_KERNEL); | |
1442 | if (!ae_dev) { | |
1443 | ret = -ENOMEM; | |
1444 | return ret; | |
1445 | } | |
1446 | ||
1447 | ae_dev->pdev = pdev; | |
e92a0843 | 1448 | ae_dev->flag = ent->driver_data; |
76ad4f0e S |
1449 | ae_dev->dev_type = HNAE3_DEV_KNIC; |
1450 | pci_set_drvdata(pdev, ae_dev); | |
1451 | ||
1452 | return hnae3_register_ae_dev(ae_dev); | |
1453 | } | |
1454 | ||
1455 | /* hns3_remove - Device removal routine | |
1456 | * @pdev: PCI device information struct | |
1457 | */ | |
1458 | static void hns3_remove(struct pci_dev *pdev) | |
1459 | { | |
1460 | struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev); | |
1461 | ||
1462 | hnae3_unregister_ae_dev(ae_dev); | |
1463 | ||
1464 | devm_kfree(&pdev->dev, ae_dev); | |
1465 | ||
1466 | pci_set_drvdata(pdev, NULL); | |
1467 | } | |
1468 | ||
1469 | static struct pci_driver hns3_driver = { | |
1470 | .name = hns3_driver_name, | |
1471 | .id_table = hns3_pci_tbl, | |
1472 | .probe = hns3_probe, | |
1473 | .remove = hns3_remove, | |
1474 | }; | |
1475 | ||
1476 | /* set default feature to hns3 */ | |
1477 | static void hns3_set_default_feature(struct net_device *netdev) | |
1478 | { | |
1479 | netdev->priv_flags |= IFF_UNICAST_FLT; | |
1480 | ||
1481 | netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
1482 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | | |
1483 | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | | |
1484 | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | | |
1485 | NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
1486 | ||
1487 | netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID; | |
1488 | ||
1489 | netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM; | |
1490 | ||
1491 | netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
1492 | NETIF_F_HW_VLAN_CTAG_FILTER | | |
1493 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | | |
1494 | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | | |
1495 | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | | |
1496 | NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
1497 | ||
1498 | netdev->vlan_features |= | |
1499 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | | |
1500 | NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO | | |
1501 | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | | |
1502 | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | | |
1503 | NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
1504 | ||
1505 | netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
1506 | NETIF_F_HW_VLAN_CTAG_FILTER | | |
1507 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | | |
1508 | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | | |
1509 | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | | |
1510 | NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
1511 | } | |
1512 | ||
1513 | static int hns3_alloc_buffer(struct hns3_enet_ring *ring, | |
1514 | struct hns3_desc_cb *cb) | |
1515 | { | |
1516 | unsigned int order = hnae_page_order(ring); | |
1517 | struct page *p; | |
1518 | ||
1519 | p = dev_alloc_pages(order); | |
1520 | if (!p) | |
1521 | return -ENOMEM; | |
1522 | ||
1523 | cb->priv = p; | |
1524 | cb->page_offset = 0; | |
1525 | cb->reuse_flag = 0; | |
1526 | cb->buf = page_address(p); | |
1527 | cb->length = hnae_page_size(ring); | |
1528 | cb->type = DESC_TYPE_PAGE; | |
1529 | ||
76ad4f0e S |
1530 | return 0; |
1531 | } | |
1532 | ||
1533 | static void hns3_free_buffer(struct hns3_enet_ring *ring, | |
1534 | struct hns3_desc_cb *cb) | |
1535 | { | |
1536 | if (cb->type == DESC_TYPE_SKB) | |
1537 | dev_kfree_skb_any((struct sk_buff *)cb->priv); | |
1538 | else if (!HNAE3_IS_TX_RING(ring)) | |
1539 | put_page((struct page *)cb->priv); | |
1540 | memset(cb, 0, sizeof(*cb)); | |
1541 | } | |
1542 | ||
1543 | static int hns3_map_buffer(struct hns3_enet_ring *ring, struct hns3_desc_cb *cb) | |
1544 | { | |
1545 | cb->dma = dma_map_page(ring_to_dev(ring), cb->priv, 0, | |
1546 | cb->length, ring_to_dma_dir(ring)); | |
1547 | ||
1548 | if (dma_mapping_error(ring_to_dev(ring), cb->dma)) | |
1549 | return -EIO; | |
1550 | ||
1551 | return 0; | |
1552 | } | |
1553 | ||
1554 | static void hns3_unmap_buffer(struct hns3_enet_ring *ring, | |
1555 | struct hns3_desc_cb *cb) | |
1556 | { | |
1557 | if (cb->type == DESC_TYPE_SKB) | |
1558 | dma_unmap_single(ring_to_dev(ring), cb->dma, cb->length, | |
1559 | ring_to_dma_dir(ring)); | |
1560 | else | |
1561 | dma_unmap_page(ring_to_dev(ring), cb->dma, cb->length, | |
1562 | ring_to_dma_dir(ring)); | |
1563 | } | |
1564 | ||
1565 | static void hns3_buffer_detach(struct hns3_enet_ring *ring, int i) | |
1566 | { | |
1567 | hns3_unmap_buffer(ring, &ring->desc_cb[i]); | |
1568 | ring->desc[i].addr = 0; | |
1569 | } | |
1570 | ||
1571 | static void hns3_free_buffer_detach(struct hns3_enet_ring *ring, int i) | |
1572 | { | |
1573 | struct hns3_desc_cb *cb = &ring->desc_cb[i]; | |
1574 | ||
1575 | if (!ring->desc_cb[i].dma) | |
1576 | return; | |
1577 | ||
1578 | hns3_buffer_detach(ring, i); | |
1579 | hns3_free_buffer(ring, cb); | |
1580 | } | |
1581 | ||
1582 | static void hns3_free_buffers(struct hns3_enet_ring *ring) | |
1583 | { | |
1584 | int i; | |
1585 | ||
1586 | for (i = 0; i < ring->desc_num; i++) | |
1587 | hns3_free_buffer_detach(ring, i); | |
1588 | } | |
1589 | ||
1590 | /* free desc along with its attached buffer */ | |
1591 | static void hns3_free_desc(struct hns3_enet_ring *ring) | |
1592 | { | |
1593 | hns3_free_buffers(ring); | |
1594 | ||
1595 | dma_unmap_single(ring_to_dev(ring), ring->desc_dma_addr, | |
1596 | ring->desc_num * sizeof(ring->desc[0]), | |
1597 | DMA_BIDIRECTIONAL); | |
1598 | ring->desc_dma_addr = 0; | |
1599 | kfree(ring->desc); | |
1600 | ring->desc = NULL; | |
1601 | } | |
1602 | ||
1603 | static int hns3_alloc_desc(struct hns3_enet_ring *ring) | |
1604 | { | |
1605 | int size = ring->desc_num * sizeof(ring->desc[0]); | |
1606 | ||
1607 | ring->desc = kzalloc(size, GFP_KERNEL); | |
1608 | if (!ring->desc) | |
1609 | return -ENOMEM; | |
1610 | ||
1611 | ring->desc_dma_addr = dma_map_single(ring_to_dev(ring), ring->desc, | |
1612 | size, DMA_BIDIRECTIONAL); | |
1613 | if (dma_mapping_error(ring_to_dev(ring), ring->desc_dma_addr)) { | |
1614 | ring->desc_dma_addr = 0; | |
1615 | kfree(ring->desc); | |
1616 | ring->desc = NULL; | |
1617 | return -ENOMEM; | |
1618 | } | |
1619 | ||
1620 | return 0; | |
1621 | } | |
1622 | ||
1623 | static int hns3_reserve_buffer_map(struct hns3_enet_ring *ring, | |
1624 | struct hns3_desc_cb *cb) | |
1625 | { | |
1626 | int ret; | |
1627 | ||
1628 | ret = hns3_alloc_buffer(ring, cb); | |
1629 | if (ret) | |
1630 | goto out; | |
1631 | ||
1632 | ret = hns3_map_buffer(ring, cb); | |
1633 | if (ret) | |
1634 | goto out_with_buf; | |
1635 | ||
1636 | return 0; | |
1637 | ||
1638 | out_with_buf: | |
564883bb | 1639 | hns3_free_buffer(ring, cb); |
76ad4f0e S |
1640 | out: |
1641 | return ret; | |
1642 | } | |
1643 | ||
1644 | static int hns3_alloc_buffer_attach(struct hns3_enet_ring *ring, int i) | |
1645 | { | |
1646 | int ret = hns3_reserve_buffer_map(ring, &ring->desc_cb[i]); | |
1647 | ||
1648 | if (ret) | |
1649 | return ret; | |
1650 | ||
1651 | ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); | |
1652 | ||
1653 | return 0; | |
1654 | } | |
1655 | ||
1656 | /* Allocate memory for raw pkg, and map with dma */ | |
1657 | static int hns3_alloc_ring_buffers(struct hns3_enet_ring *ring) | |
1658 | { | |
1659 | int i, j, ret; | |
1660 | ||
1661 | for (i = 0; i < ring->desc_num; i++) { | |
1662 | ret = hns3_alloc_buffer_attach(ring, i); | |
1663 | if (ret) | |
1664 | goto out_buffer_fail; | |
1665 | } | |
1666 | ||
1667 | return 0; | |
1668 | ||
1669 | out_buffer_fail: | |
1670 | for (j = i - 1; j >= 0; j--) | |
1671 | hns3_free_buffer_detach(ring, j); | |
1672 | return ret; | |
1673 | } | |
1674 | ||
1675 | /* detach a in-used buffer and replace with a reserved one */ | |
1676 | static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i, | |
1677 | struct hns3_desc_cb *res_cb) | |
1678 | { | |
b9077428 | 1679 | hns3_unmap_buffer(ring, &ring->desc_cb[i]); |
76ad4f0e S |
1680 | ring->desc_cb[i] = *res_cb; |
1681 | ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); | |
1682 | } | |
1683 | ||
1684 | static void hns3_reuse_buffer(struct hns3_enet_ring *ring, int i) | |
1685 | { | |
1686 | ring->desc_cb[i].reuse_flag = 0; | |
1687 | ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma | |
1688 | + ring->desc_cb[i].page_offset); | |
1689 | } | |
1690 | ||
1691 | static void hns3_nic_reclaim_one_desc(struct hns3_enet_ring *ring, int *bytes, | |
1692 | int *pkts) | |
1693 | { | |
1694 | struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
1695 | ||
1696 | (*pkts) += (desc_cb->type == DESC_TYPE_SKB); | |
1697 | (*bytes) += desc_cb->length; | |
1698 | /* desc_cb will be cleaned, after hnae_free_buffer_detach*/ | |
1699 | hns3_free_buffer_detach(ring, ring->next_to_clean); | |
1700 | ||
1701 | ring_ptr_move_fw(ring, next_to_clean); | |
1702 | } | |
1703 | ||
1704 | static int is_valid_clean_head(struct hns3_enet_ring *ring, int h) | |
1705 | { | |
1706 | int u = ring->next_to_use; | |
1707 | int c = ring->next_to_clean; | |
1708 | ||
1709 | if (unlikely(h > ring->desc_num)) | |
1710 | return 0; | |
1711 | ||
1712 | return u > c ? (h > c && h <= u) : (h > c || h <= u); | |
1713 | } | |
1714 | ||
24e750c4 | 1715 | bool hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget) |
76ad4f0e S |
1716 | { |
1717 | struct net_device *netdev = ring->tqp->handle->kinfo.netdev; | |
1718 | struct netdev_queue *dev_queue; | |
1719 | int bytes, pkts; | |
1720 | int head; | |
1721 | ||
1722 | head = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_HEAD_REG); | |
1723 | rmb(); /* Make sure head is ready before touch any data */ | |
1724 | ||
1725 | if (is_ring_empty(ring) || head == ring->next_to_clean) | |
24e750c4 | 1726 | return true; /* no data to poll */ |
76ad4f0e S |
1727 | |
1728 | if (!is_valid_clean_head(ring, head)) { | |
1729 | netdev_err(netdev, "wrong head (%d, %d-%d)\n", head, | |
1730 | ring->next_to_use, ring->next_to_clean); | |
1731 | ||
1732 | u64_stats_update_begin(&ring->syncp); | |
1733 | ring->stats.io_err_cnt++; | |
1734 | u64_stats_update_end(&ring->syncp); | |
24e750c4 | 1735 | return true; |
76ad4f0e S |
1736 | } |
1737 | ||
1738 | bytes = 0; | |
1739 | pkts = 0; | |
1740 | while (head != ring->next_to_clean && budget) { | |
1741 | hns3_nic_reclaim_one_desc(ring, &bytes, &pkts); | |
1742 | /* Issue prefetch for next Tx descriptor */ | |
1743 | prefetch(&ring->desc_cb[ring->next_to_clean]); | |
1744 | budget--; | |
1745 | } | |
1746 | ||
1747 | ring->tqp_vector->tx_group.total_bytes += bytes; | |
1748 | ring->tqp_vector->tx_group.total_packets += pkts; | |
1749 | ||
1750 | u64_stats_update_begin(&ring->syncp); | |
1751 | ring->stats.tx_bytes += bytes; | |
1752 | ring->stats.tx_pkts += pkts; | |
1753 | u64_stats_update_end(&ring->syncp); | |
1754 | ||
1755 | dev_queue = netdev_get_tx_queue(netdev, ring->tqp->tqp_index); | |
1756 | netdev_tx_completed_queue(dev_queue, pkts, bytes); | |
1757 | ||
1758 | if (unlikely(pkts && netif_carrier_ok(netdev) && | |
1759 | (ring_space(ring) > HNS3_MAX_BD_PER_PKT))) { | |
1760 | /* Make sure that anybody stopping the queue after this | |
1761 | * sees the new next_to_clean. | |
1762 | */ | |
1763 | smp_mb(); | |
1764 | if (netif_tx_queue_stopped(dev_queue)) { | |
1765 | netif_tx_wake_queue(dev_queue); | |
1766 | ring->stats.restart_queue++; | |
1767 | } | |
1768 | } | |
1769 | ||
1770 | return !!budget; | |
1771 | } | |
1772 | ||
1773 | static int hns3_desc_unused(struct hns3_enet_ring *ring) | |
1774 | { | |
1775 | int ntc = ring->next_to_clean; | |
1776 | int ntu = ring->next_to_use; | |
1777 | ||
1778 | return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu; | |
1779 | } | |
1780 | ||
1781 | static void | |
1782 | hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring, int cleand_count) | |
1783 | { | |
1784 | struct hns3_desc_cb *desc_cb; | |
1785 | struct hns3_desc_cb res_cbs; | |
1786 | int i, ret; | |
1787 | ||
1788 | for (i = 0; i < cleand_count; i++) { | |
1789 | desc_cb = &ring->desc_cb[ring->next_to_use]; | |
1790 | if (desc_cb->reuse_flag) { | |
1791 | u64_stats_update_begin(&ring->syncp); | |
1792 | ring->stats.reuse_pg_cnt++; | |
1793 | u64_stats_update_end(&ring->syncp); | |
1794 | ||
1795 | hns3_reuse_buffer(ring, ring->next_to_use); | |
1796 | } else { | |
1797 | ret = hns3_reserve_buffer_map(ring, &res_cbs); | |
1798 | if (ret) { | |
1799 | u64_stats_update_begin(&ring->syncp); | |
1800 | ring->stats.sw_err_cnt++; | |
1801 | u64_stats_update_end(&ring->syncp); | |
1802 | ||
1803 | netdev_err(ring->tqp->handle->kinfo.netdev, | |
1804 | "hnae reserve buffer map failed.\n"); | |
1805 | break; | |
1806 | } | |
1807 | hns3_replace_buffer(ring, ring->next_to_use, &res_cbs); | |
1808 | } | |
1809 | ||
1810 | ring_ptr_move_fw(ring, next_to_use); | |
1811 | } | |
1812 | ||
1813 | wmb(); /* Make all data has been write before submit */ | |
1814 | writel_relaxed(i, ring->tqp->io_base + HNS3_RING_RX_RING_HEAD_REG); | |
1815 | } | |
1816 | ||
1817 | /* hns3_nic_get_headlen - determine size of header for LRO/GRO | |
1818 | * @data: pointer to the start of the headers | |
1819 | * @max: total length of section to find headers in | |
1820 | * | |
1821 | * This function is meant to determine the length of headers that will | |
1822 | * be recognized by hardware for LRO, GRO, and RSC offloads. The main | |
1823 | * motivation of doing this is to only perform one pull for IPv4 TCP | |
1824 | * packets so that we can do basic things like calculating the gso_size | |
1825 | * based on the average data per packet. | |
1826 | */ | |
1827 | static unsigned int hns3_nic_get_headlen(unsigned char *data, u32 flag, | |
1828 | unsigned int max_size) | |
1829 | { | |
1830 | unsigned char *network; | |
1831 | u8 hlen; | |
1832 | ||
1833 | /* This should never happen, but better safe than sorry */ | |
1834 | if (max_size < ETH_HLEN) | |
1835 | return max_size; | |
1836 | ||
1837 | /* Initialize network frame pointer */ | |
1838 | network = data; | |
1839 | ||
1840 | /* Set first protocol and move network header forward */ | |
1841 | network += ETH_HLEN; | |
1842 | ||
1843 | /* Handle any vlan tag if present */ | |
1844 | if (hnae_get_field(flag, HNS3_RXD_VLAN_M, HNS3_RXD_VLAN_S) | |
1845 | == HNS3_RX_FLAG_VLAN_PRESENT) { | |
1846 | if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN)) | |
1847 | return max_size; | |
1848 | ||
1849 | network += VLAN_HLEN; | |
1850 | } | |
1851 | ||
1852 | /* Handle L3 protocols */ | |
1853 | if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S) | |
1854 | == HNS3_RX_FLAG_L3ID_IPV4) { | |
1855 | if ((typeof(max_size))(network - data) > | |
1856 | (max_size - sizeof(struct iphdr))) | |
1857 | return max_size; | |
1858 | ||
1859 | /* Access ihl as a u8 to avoid unaligned access on ia64 */ | |
1860 | hlen = (network[0] & 0x0F) << 2; | |
1861 | ||
1862 | /* Verify hlen meets minimum size requirements */ | |
1863 | if (hlen < sizeof(struct iphdr)) | |
1864 | return network - data; | |
1865 | ||
1866 | /* Record next protocol if header is present */ | |
1867 | } else if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S) | |
1868 | == HNS3_RX_FLAG_L3ID_IPV6) { | |
1869 | if ((typeof(max_size))(network - data) > | |
1870 | (max_size - sizeof(struct ipv6hdr))) | |
1871 | return max_size; | |
1872 | ||
1873 | /* Record next protocol */ | |
1874 | hlen = sizeof(struct ipv6hdr); | |
1875 | } else { | |
1876 | return network - data; | |
1877 | } | |
1878 | ||
1879 | /* Relocate pointer to start of L4 header */ | |
1880 | network += hlen; | |
1881 | ||
1882 | /* Finally sort out TCP/UDP */ | |
1883 | if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S) | |
1884 | == HNS3_RX_FLAG_L4ID_TCP) { | |
1885 | if ((typeof(max_size))(network - data) > | |
1886 | (max_size - sizeof(struct tcphdr))) | |
1887 | return max_size; | |
1888 | ||
1889 | /* Access doff as a u8 to avoid unaligned access on ia64 */ | |
1890 | hlen = (network[12] & 0xF0) >> 2; | |
1891 | ||
1892 | /* Verify hlen meets minimum size requirements */ | |
1893 | if (hlen < sizeof(struct tcphdr)) | |
1894 | return network - data; | |
1895 | ||
1896 | network += hlen; | |
1897 | } else if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S) | |
1898 | == HNS3_RX_FLAG_L4ID_UDP) { | |
1899 | if ((typeof(max_size))(network - data) > | |
1900 | (max_size - sizeof(struct udphdr))) | |
1901 | return max_size; | |
1902 | ||
1903 | network += sizeof(struct udphdr); | |
1904 | } | |
1905 | ||
1906 | /* If everything has gone correctly network should be the | |
1907 | * data section of the packet and will be the end of the header. | |
1908 | * If not then it probably represents the end of the last recognized | |
1909 | * header. | |
1910 | */ | |
1911 | if ((typeof(max_size))(network - data) < max_size) | |
1912 | return network - data; | |
1913 | else | |
1914 | return max_size; | |
1915 | } | |
1916 | ||
1917 | static void hns3_nic_reuse_page(struct sk_buff *skb, int i, | |
1918 | struct hns3_enet_ring *ring, int pull_len, | |
1919 | struct hns3_desc_cb *desc_cb) | |
1920 | { | |
1921 | struct hns3_desc *desc; | |
1922 | int truesize, size; | |
1923 | int last_offset; | |
1924 | bool twobufs; | |
1925 | ||
1926 | twobufs = ((PAGE_SIZE < 8192) && | |
1927 | hnae_buf_size(ring) == HNS3_BUFFER_SIZE_2048); | |
1928 | ||
1929 | desc = &ring->desc[ring->next_to_clean]; | |
1930 | size = le16_to_cpu(desc->rx.size); | |
1931 | ||
1932 | if (twobufs) { | |
1933 | truesize = hnae_buf_size(ring); | |
1934 | } else { | |
1935 | truesize = ALIGN(size, L1_CACHE_BYTES); | |
1936 | last_offset = hnae_page_size(ring) - hnae_buf_size(ring); | |
1937 | } | |
1938 | ||
1939 | skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len, | |
1940 | size - pull_len, truesize - pull_len); | |
1941 | ||
1942 | /* Avoid re-using remote pages,flag default unreuse */ | |
1943 | if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id())) | |
1944 | return; | |
1945 | ||
1946 | if (twobufs) { | |
1947 | /* If we are only owner of page we can reuse it */ | |
1948 | if (likely(page_count(desc_cb->priv) == 1)) { | |
1949 | /* Flip page offset to other buffer */ | |
1950 | desc_cb->page_offset ^= truesize; | |
1951 | ||
1952 | desc_cb->reuse_flag = 1; | |
1953 | /* bump ref count on page before it is given*/ | |
1954 | get_page(desc_cb->priv); | |
1955 | } | |
1956 | return; | |
1957 | } | |
1958 | ||
1959 | /* Move offset up to the next cache line */ | |
1960 | desc_cb->page_offset += truesize; | |
1961 | ||
1962 | if (desc_cb->page_offset <= last_offset) { | |
1963 | desc_cb->reuse_flag = 1; | |
1964 | /* Bump ref count on page before it is given*/ | |
1965 | get_page(desc_cb->priv); | |
1966 | } | |
1967 | } | |
1968 | ||
1969 | static void hns3_rx_checksum(struct hns3_enet_ring *ring, struct sk_buff *skb, | |
1970 | struct hns3_desc *desc) | |
1971 | { | |
1972 | struct net_device *netdev = ring->tqp->handle->kinfo.netdev; | |
1973 | int l3_type, l4_type; | |
1974 | u32 bd_base_info; | |
1975 | int ol4_type; | |
1976 | u32 l234info; | |
1977 | ||
1978 | bd_base_info = le32_to_cpu(desc->rx.bd_base_info); | |
1979 | l234info = le32_to_cpu(desc->rx.l234_info); | |
1980 | ||
1981 | skb->ip_summed = CHECKSUM_NONE; | |
1982 | ||
1983 | skb_checksum_none_assert(skb); | |
1984 | ||
1985 | if (!(netdev->features & NETIF_F_RXCSUM)) | |
1986 | return; | |
1987 | ||
1988 | /* check if hardware has done checksum */ | |
1989 | if (!hnae_get_bit(bd_base_info, HNS3_RXD_L3L4P_B)) | |
1990 | return; | |
1991 | ||
1992 | if (unlikely(hnae_get_bit(l234info, HNS3_RXD_L3E_B) || | |
1993 | hnae_get_bit(l234info, HNS3_RXD_L4E_B) || | |
1994 | hnae_get_bit(l234info, HNS3_RXD_OL3E_B) || | |
1995 | hnae_get_bit(l234info, HNS3_RXD_OL4E_B))) { | |
1996 | netdev_err(netdev, "L3/L4 error pkt\n"); | |
1997 | u64_stats_update_begin(&ring->syncp); | |
1998 | ring->stats.l3l4_csum_err++; | |
1999 | u64_stats_update_end(&ring->syncp); | |
2000 | ||
2001 | return; | |
2002 | } | |
2003 | ||
2004 | l3_type = hnae_get_field(l234info, HNS3_RXD_L3ID_M, | |
2005 | HNS3_RXD_L3ID_S); | |
2006 | l4_type = hnae_get_field(l234info, HNS3_RXD_L4ID_M, | |
2007 | HNS3_RXD_L4ID_S); | |
2008 | ||
2009 | ol4_type = hnae_get_field(l234info, HNS3_RXD_OL4ID_M, HNS3_RXD_OL4ID_S); | |
2010 | switch (ol4_type) { | |
2011 | case HNS3_OL4_TYPE_MAC_IN_UDP: | |
2012 | case HNS3_OL4_TYPE_NVGRE: | |
2013 | skb->csum_level = 1; | |
2014 | case HNS3_OL4_TYPE_NO_TUN: | |
2015 | /* Can checksum ipv4 or ipv6 + UDP/TCP/SCTP packets */ | |
2016 | if (l3_type == HNS3_L3_TYPE_IPV4 || | |
2017 | (l3_type == HNS3_L3_TYPE_IPV6 && | |
2018 | (l4_type == HNS3_L4_TYPE_UDP || | |
2019 | l4_type == HNS3_L4_TYPE_TCP || | |
2020 | l4_type == HNS3_L4_TYPE_SCTP))) | |
2021 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2022 | break; | |
2023 | } | |
2024 | } | |
2025 | ||
d43e5aca YL |
2026 | static void hns3_rx_skb(struct hns3_enet_ring *ring, struct sk_buff *skb) |
2027 | { | |
2028 | napi_gro_receive(&ring->tqp_vector->napi, skb); | |
2029 | } | |
2030 | ||
76ad4f0e S |
2031 | static int hns3_handle_rx_bd(struct hns3_enet_ring *ring, |
2032 | struct sk_buff **out_skb, int *out_bnum) | |
2033 | { | |
2034 | struct net_device *netdev = ring->tqp->handle->kinfo.netdev; | |
2035 | struct hns3_desc_cb *desc_cb; | |
2036 | struct hns3_desc *desc; | |
2037 | struct sk_buff *skb; | |
2038 | unsigned char *va; | |
2039 | u32 bd_base_info; | |
2040 | int pull_len; | |
2041 | u32 l234info; | |
2042 | int length; | |
2043 | int bnum; | |
2044 | ||
2045 | desc = &ring->desc[ring->next_to_clean]; | |
2046 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
2047 | ||
2048 | prefetch(desc); | |
2049 | ||
2050 | length = le16_to_cpu(desc->rx.pkt_len); | |
2051 | bd_base_info = le32_to_cpu(desc->rx.bd_base_info); | |
2052 | l234info = le32_to_cpu(desc->rx.l234_info); | |
2053 | ||
2054 | /* Check valid BD */ | |
2055 | if (!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B)) | |
2056 | return -EFAULT; | |
2057 | ||
2058 | va = (unsigned char *)desc_cb->buf + desc_cb->page_offset; | |
2059 | ||
2060 | /* Prefetch first cache line of first page | |
2061 | * Idea is to cache few bytes of the header of the packet. Our L1 Cache | |
2062 | * line size is 64B so need to prefetch twice to make it 128B. But in | |
2063 | * actual we can have greater size of caches with 128B Level 1 cache | |
2064 | * lines. In such a case, single fetch would suffice to cache in the | |
2065 | * relevant part of the header. | |
2066 | */ | |
2067 | prefetch(va); | |
2068 | #if L1_CACHE_BYTES < 128 | |
2069 | prefetch(va + L1_CACHE_BYTES); | |
2070 | #endif | |
2071 | ||
2072 | skb = *out_skb = napi_alloc_skb(&ring->tqp_vector->napi, | |
2073 | HNS3_RX_HEAD_SIZE); | |
2074 | if (unlikely(!skb)) { | |
2075 | netdev_err(netdev, "alloc rx skb fail\n"); | |
2076 | ||
2077 | u64_stats_update_begin(&ring->syncp); | |
2078 | ring->stats.sw_err_cnt++; | |
2079 | u64_stats_update_end(&ring->syncp); | |
2080 | ||
2081 | return -ENOMEM; | |
2082 | } | |
2083 | ||
2084 | prefetchw(skb->data); | |
2085 | ||
2086 | bnum = 1; | |
2087 | if (length <= HNS3_RX_HEAD_SIZE) { | |
2088 | memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long))); | |
2089 | ||
2090 | /* We can reuse buffer as-is, just make sure it is local */ | |
2091 | if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) | |
2092 | desc_cb->reuse_flag = 1; | |
2093 | else /* This page cannot be reused so discard it */ | |
2094 | put_page(desc_cb->priv); | |
2095 | ||
2096 | ring_ptr_move_fw(ring, next_to_clean); | |
2097 | } else { | |
2098 | u64_stats_update_begin(&ring->syncp); | |
2099 | ring->stats.seg_pkt_cnt++; | |
2100 | u64_stats_update_end(&ring->syncp); | |
2101 | ||
2102 | pull_len = hns3_nic_get_headlen(va, l234info, | |
2103 | HNS3_RX_HEAD_SIZE); | |
2104 | memcpy(__skb_put(skb, pull_len), va, | |
2105 | ALIGN(pull_len, sizeof(long))); | |
2106 | ||
2107 | hns3_nic_reuse_page(skb, 0, ring, pull_len, desc_cb); | |
2108 | ring_ptr_move_fw(ring, next_to_clean); | |
2109 | ||
2110 | while (!hnae_get_bit(bd_base_info, HNS3_RXD_FE_B)) { | |
2111 | desc = &ring->desc[ring->next_to_clean]; | |
2112 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
2113 | bd_base_info = le32_to_cpu(desc->rx.bd_base_info); | |
2114 | hns3_nic_reuse_page(skb, bnum, ring, 0, desc_cb); | |
2115 | ring_ptr_move_fw(ring, next_to_clean); | |
2116 | bnum++; | |
2117 | } | |
2118 | } | |
2119 | ||
2120 | *out_bnum = bnum; | |
2121 | ||
2122 | if (unlikely(!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B))) { | |
2123 | netdev_err(netdev, "no valid bd,%016llx,%016llx\n", | |
2124 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
2125 | u64_stats_update_begin(&ring->syncp); | |
2126 | ring->stats.non_vld_descs++; | |
2127 | u64_stats_update_end(&ring->syncp); | |
2128 | ||
2129 | dev_kfree_skb_any(skb); | |
2130 | return -EINVAL; | |
2131 | } | |
2132 | ||
2133 | if (unlikely((!desc->rx.pkt_len) || | |
2134 | hnae_get_bit(l234info, HNS3_RXD_TRUNCAT_B))) { | |
2135 | netdev_err(netdev, "truncated pkt\n"); | |
2136 | u64_stats_update_begin(&ring->syncp); | |
2137 | ring->stats.err_pkt_len++; | |
2138 | u64_stats_update_end(&ring->syncp); | |
2139 | ||
2140 | dev_kfree_skb_any(skb); | |
2141 | return -EFAULT; | |
2142 | } | |
2143 | ||
2144 | if (unlikely(hnae_get_bit(l234info, HNS3_RXD_L2E_B))) { | |
2145 | netdev_err(netdev, "L2 error pkt\n"); | |
2146 | u64_stats_update_begin(&ring->syncp); | |
2147 | ring->stats.l2_err++; | |
2148 | u64_stats_update_end(&ring->syncp); | |
2149 | ||
2150 | dev_kfree_skb_any(skb); | |
2151 | return -EFAULT; | |
2152 | } | |
2153 | ||
2154 | u64_stats_update_begin(&ring->syncp); | |
2155 | ring->stats.rx_pkts++; | |
2156 | ring->stats.rx_bytes += skb->len; | |
2157 | u64_stats_update_end(&ring->syncp); | |
2158 | ||
2159 | ring->tqp_vector->rx_group.total_bytes += skb->len; | |
2160 | ||
2161 | hns3_rx_checksum(ring, skb, desc); | |
2162 | return 0; | |
2163 | } | |
2164 | ||
d43e5aca YL |
2165 | int hns3_clean_rx_ring( |
2166 | struct hns3_enet_ring *ring, int budget, | |
2167 | void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *)) | |
76ad4f0e S |
2168 | { |
2169 | #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16 | |
2170 | struct net_device *netdev = ring->tqp->handle->kinfo.netdev; | |
2171 | int recv_pkts, recv_bds, clean_count, err; | |
2172 | int unused_count = hns3_desc_unused(ring); | |
2173 | struct sk_buff *skb = NULL; | |
2174 | int num, bnum = 0; | |
2175 | ||
2176 | num = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_FBDNUM_REG); | |
2177 | rmb(); /* Make sure num taken effect before the other data is touched */ | |
2178 | ||
2179 | recv_pkts = 0, recv_bds = 0, clean_count = 0; | |
2180 | num -= unused_count; | |
2181 | ||
2182 | while (recv_pkts < budget && recv_bds < num) { | |
2183 | /* Reuse or realloc buffers */ | |
2184 | if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) { | |
2185 | hns3_nic_alloc_rx_buffers(ring, | |
2186 | clean_count + unused_count); | |
2187 | clean_count = 0; | |
2188 | unused_count = hns3_desc_unused(ring); | |
2189 | } | |
2190 | ||
2191 | /* Poll one pkt */ | |
2192 | err = hns3_handle_rx_bd(ring, &skb, &bnum); | |
2193 | if (unlikely(!skb)) /* This fault cannot be repaired */ | |
2194 | goto out; | |
2195 | ||
2196 | recv_bds += bnum; | |
2197 | clean_count += bnum; | |
2198 | if (unlikely(err)) { /* Do jump the err */ | |
2199 | recv_pkts++; | |
2200 | continue; | |
2201 | } | |
2202 | ||
2203 | /* Do update ip stack process */ | |
2204 | skb->protocol = eth_type_trans(skb, netdev); | |
d43e5aca | 2205 | rx_fn(ring, skb); |
76ad4f0e S |
2206 | |
2207 | recv_pkts++; | |
2208 | } | |
2209 | ||
2210 | out: | |
2211 | /* Make all data has been write before submit */ | |
2212 | if (clean_count + unused_count > 0) | |
2213 | hns3_nic_alloc_rx_buffers(ring, | |
2214 | clean_count + unused_count); | |
2215 | ||
2216 | return recv_pkts; | |
2217 | } | |
2218 | ||
2219 | static bool hns3_get_new_int_gl(struct hns3_enet_ring_group *ring_group) | |
2220 | { | |
2221 | #define HNS3_RX_ULTRA_PACKET_RATE 40000 | |
2222 | enum hns3_flow_level_range new_flow_level; | |
2223 | struct hns3_enet_tqp_vector *tqp_vector; | |
2224 | int packets_per_secs; | |
2225 | int bytes_per_usecs; | |
2226 | u16 new_int_gl; | |
2227 | int usecs; | |
2228 | ||
2229 | if (!ring_group->int_gl) | |
2230 | return false; | |
2231 | ||
2232 | if (ring_group->total_packets == 0) { | |
2233 | ring_group->int_gl = HNS3_INT_GL_50K; | |
2234 | ring_group->flow_level = HNS3_FLOW_LOW; | |
2235 | return true; | |
2236 | } | |
2237 | ||
2238 | /* Simple throttlerate management | |
2239 | * 0-10MB/s lower (50000 ints/s) | |
2240 | * 10-20MB/s middle (20000 ints/s) | |
2241 | * 20-1249MB/s high (18000 ints/s) | |
2242 | * > 40000pps ultra (8000 ints/s) | |
2243 | */ | |
2244 | new_flow_level = ring_group->flow_level; | |
2245 | new_int_gl = ring_group->int_gl; | |
2246 | tqp_vector = ring_group->ring->tqp_vector; | |
2247 | usecs = (ring_group->int_gl << 1); | |
2248 | bytes_per_usecs = ring_group->total_bytes / usecs; | |
2249 | /* 1000000 microseconds */ | |
2250 | packets_per_secs = ring_group->total_packets * 1000000 / usecs; | |
2251 | ||
2252 | switch (new_flow_level) { | |
2253 | case HNS3_FLOW_LOW: | |
2254 | if (bytes_per_usecs > 10) | |
2255 | new_flow_level = HNS3_FLOW_MID; | |
2256 | break; | |
2257 | case HNS3_FLOW_MID: | |
2258 | if (bytes_per_usecs > 20) | |
2259 | new_flow_level = HNS3_FLOW_HIGH; | |
2260 | else if (bytes_per_usecs <= 10) | |
2261 | new_flow_level = HNS3_FLOW_LOW; | |
2262 | break; | |
2263 | case HNS3_FLOW_HIGH: | |
2264 | case HNS3_FLOW_ULTRA: | |
2265 | default: | |
2266 | if (bytes_per_usecs <= 20) | |
2267 | new_flow_level = HNS3_FLOW_MID; | |
2268 | break; | |
2269 | } | |
2270 | ||
2271 | if ((packets_per_secs > HNS3_RX_ULTRA_PACKET_RATE) && | |
2272 | (&tqp_vector->rx_group == ring_group)) | |
2273 | new_flow_level = HNS3_FLOW_ULTRA; | |
2274 | ||
2275 | switch (new_flow_level) { | |
2276 | case HNS3_FLOW_LOW: | |
2277 | new_int_gl = HNS3_INT_GL_50K; | |
2278 | break; | |
2279 | case HNS3_FLOW_MID: | |
2280 | new_int_gl = HNS3_INT_GL_20K; | |
2281 | break; | |
2282 | case HNS3_FLOW_HIGH: | |
2283 | new_int_gl = HNS3_INT_GL_18K; | |
2284 | break; | |
2285 | case HNS3_FLOW_ULTRA: | |
2286 | new_int_gl = HNS3_INT_GL_8K; | |
2287 | break; | |
2288 | default: | |
2289 | break; | |
2290 | } | |
2291 | ||
2292 | ring_group->total_bytes = 0; | |
2293 | ring_group->total_packets = 0; | |
2294 | ring_group->flow_level = new_flow_level; | |
2295 | if (new_int_gl != ring_group->int_gl) { | |
2296 | ring_group->int_gl = new_int_gl; | |
2297 | return true; | |
2298 | } | |
2299 | return false; | |
2300 | } | |
2301 | ||
2302 | static void hns3_update_new_int_gl(struct hns3_enet_tqp_vector *tqp_vector) | |
2303 | { | |
2304 | u16 rx_int_gl, tx_int_gl; | |
2305 | bool rx, tx; | |
2306 | ||
2307 | rx = hns3_get_new_int_gl(&tqp_vector->rx_group); | |
2308 | tx = hns3_get_new_int_gl(&tqp_vector->tx_group); | |
2309 | rx_int_gl = tqp_vector->rx_group.int_gl; | |
2310 | tx_int_gl = tqp_vector->tx_group.int_gl; | |
2311 | if (rx && tx) { | |
2312 | if (rx_int_gl > tx_int_gl) { | |
2313 | tqp_vector->tx_group.int_gl = rx_int_gl; | |
2314 | tqp_vector->tx_group.flow_level = | |
2315 | tqp_vector->rx_group.flow_level; | |
2316 | hns3_set_vector_coalesc_gl(tqp_vector, rx_int_gl); | |
2317 | } else { | |
2318 | tqp_vector->rx_group.int_gl = tx_int_gl; | |
2319 | tqp_vector->rx_group.flow_level = | |
2320 | tqp_vector->tx_group.flow_level; | |
2321 | hns3_set_vector_coalesc_gl(tqp_vector, tx_int_gl); | |
2322 | } | |
2323 | } | |
2324 | } | |
2325 | ||
2326 | static int hns3_nic_common_poll(struct napi_struct *napi, int budget) | |
2327 | { | |
2328 | struct hns3_enet_ring *ring; | |
2329 | int rx_pkt_total = 0; | |
2330 | ||
2331 | struct hns3_enet_tqp_vector *tqp_vector = | |
2332 | container_of(napi, struct hns3_enet_tqp_vector, napi); | |
2333 | bool clean_complete = true; | |
2334 | int rx_budget; | |
2335 | ||
2336 | /* Since the actual Tx work is minimal, we can give the Tx a larger | |
2337 | * budget and be more aggressive about cleaning up the Tx descriptors. | |
2338 | */ | |
2339 | hns3_for_each_ring(ring, tqp_vector->tx_group) { | |
2340 | if (!hns3_clean_tx_ring(ring, budget)) | |
2341 | clean_complete = false; | |
2342 | } | |
2343 | ||
2344 | /* make sure rx ring budget not smaller than 1 */ | |
2345 | rx_budget = max(budget / tqp_vector->num_tqps, 1); | |
2346 | ||
2347 | hns3_for_each_ring(ring, tqp_vector->rx_group) { | |
d43e5aca YL |
2348 | int rx_cleaned = hns3_clean_rx_ring(ring, rx_budget, |
2349 | hns3_rx_skb); | |
76ad4f0e S |
2350 | |
2351 | if (rx_cleaned >= rx_budget) | |
2352 | clean_complete = false; | |
2353 | ||
2354 | rx_pkt_total += rx_cleaned; | |
2355 | } | |
2356 | ||
2357 | tqp_vector->rx_group.total_packets += rx_pkt_total; | |
2358 | ||
2359 | if (!clean_complete) | |
2360 | return budget; | |
2361 | ||
2362 | napi_complete(napi); | |
2363 | hns3_update_new_int_gl(tqp_vector); | |
2364 | hns3_mask_vector_irq(tqp_vector, 1); | |
2365 | ||
2366 | return rx_pkt_total; | |
2367 | } | |
2368 | ||
2369 | static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, | |
2370 | struct hnae3_ring_chain_node *head) | |
2371 | { | |
2372 | struct pci_dev *pdev = tqp_vector->handle->pdev; | |
2373 | struct hnae3_ring_chain_node *cur_chain = head; | |
2374 | struct hnae3_ring_chain_node *chain; | |
2375 | struct hns3_enet_ring *tx_ring; | |
2376 | struct hns3_enet_ring *rx_ring; | |
2377 | ||
2378 | tx_ring = tqp_vector->tx_group.ring; | |
2379 | if (tx_ring) { | |
2380 | cur_chain->tqp_index = tx_ring->tqp->tqp_index; | |
2381 | hnae_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B, | |
2382 | HNAE3_RING_TYPE_TX); | |
2383 | ||
2384 | cur_chain->next = NULL; | |
2385 | ||
2386 | while (tx_ring->next) { | |
2387 | tx_ring = tx_ring->next; | |
2388 | ||
2389 | chain = devm_kzalloc(&pdev->dev, sizeof(*chain), | |
2390 | GFP_KERNEL); | |
2391 | if (!chain) | |
2392 | return -ENOMEM; | |
2393 | ||
2394 | cur_chain->next = chain; | |
2395 | chain->tqp_index = tx_ring->tqp->tqp_index; | |
2396 | hnae_set_bit(chain->flag, HNAE3_RING_TYPE_B, | |
2397 | HNAE3_RING_TYPE_TX); | |
2398 | ||
2399 | cur_chain = chain; | |
2400 | } | |
2401 | } | |
2402 | ||
2403 | rx_ring = tqp_vector->rx_group.ring; | |
2404 | if (!tx_ring && rx_ring) { | |
2405 | cur_chain->next = NULL; | |
2406 | cur_chain->tqp_index = rx_ring->tqp->tqp_index; | |
2407 | hnae_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B, | |
2408 | HNAE3_RING_TYPE_RX); | |
2409 | ||
2410 | rx_ring = rx_ring->next; | |
2411 | } | |
2412 | ||
2413 | while (rx_ring) { | |
2414 | chain = devm_kzalloc(&pdev->dev, sizeof(*chain), GFP_KERNEL); | |
2415 | if (!chain) | |
2416 | return -ENOMEM; | |
2417 | ||
2418 | cur_chain->next = chain; | |
2419 | chain->tqp_index = rx_ring->tqp->tqp_index; | |
2420 | hnae_set_bit(chain->flag, HNAE3_RING_TYPE_B, | |
2421 | HNAE3_RING_TYPE_RX); | |
2422 | cur_chain = chain; | |
2423 | ||
2424 | rx_ring = rx_ring->next; | |
2425 | } | |
2426 | ||
2427 | return 0; | |
2428 | } | |
2429 | ||
2430 | static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, | |
2431 | struct hnae3_ring_chain_node *head) | |
2432 | { | |
2433 | struct pci_dev *pdev = tqp_vector->handle->pdev; | |
2434 | struct hnae3_ring_chain_node *chain_tmp, *chain; | |
2435 | ||
2436 | chain = head->next; | |
2437 | ||
2438 | while (chain) { | |
2439 | chain_tmp = chain->next; | |
2440 | devm_kfree(&pdev->dev, chain); | |
2441 | chain = chain_tmp; | |
2442 | } | |
2443 | } | |
2444 | ||
2445 | static void hns3_add_ring_to_group(struct hns3_enet_ring_group *group, | |
2446 | struct hns3_enet_ring *ring) | |
2447 | { | |
2448 | ring->next = group->ring; | |
2449 | group->ring = ring; | |
2450 | ||
2451 | group->count++; | |
2452 | } | |
2453 | ||
2454 | static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv) | |
2455 | { | |
2456 | struct hnae3_ring_chain_node vector_ring_chain; | |
2457 | struct hnae3_handle *h = priv->ae_handle; | |
2458 | struct hns3_enet_tqp_vector *tqp_vector; | |
2459 | struct hnae3_vector_info *vector; | |
2460 | struct pci_dev *pdev = h->pdev; | |
2461 | u16 tqp_num = h->kinfo.num_tqps; | |
2462 | u16 vector_num; | |
2463 | int ret = 0; | |
2464 | u16 i; | |
2465 | ||
2466 | /* RSS size, cpu online and vector_num should be the same */ | |
2467 | /* Should consider 2p/4p later */ | |
2468 | vector_num = min_t(u16, num_online_cpus(), tqp_num); | |
2469 | vector = devm_kcalloc(&pdev->dev, vector_num, sizeof(*vector), | |
2470 | GFP_KERNEL); | |
2471 | if (!vector) | |
2472 | return -ENOMEM; | |
2473 | ||
2474 | vector_num = h->ae_algo->ops->get_vector(h, vector_num, vector); | |
2475 | ||
2476 | priv->vector_num = vector_num; | |
2477 | priv->tqp_vector = (struct hns3_enet_tqp_vector *) | |
2478 | devm_kcalloc(&pdev->dev, vector_num, sizeof(*priv->tqp_vector), | |
2479 | GFP_KERNEL); | |
2480 | if (!priv->tqp_vector) | |
2481 | return -ENOMEM; | |
2482 | ||
2483 | for (i = 0; i < tqp_num; i++) { | |
2484 | u16 vector_i = i % vector_num; | |
2485 | ||
2486 | tqp_vector = &priv->tqp_vector[vector_i]; | |
2487 | ||
2488 | hns3_add_ring_to_group(&tqp_vector->tx_group, | |
2489 | priv->ring_data[i].ring); | |
2490 | ||
2491 | hns3_add_ring_to_group(&tqp_vector->rx_group, | |
2492 | priv->ring_data[i + tqp_num].ring); | |
2493 | ||
2494 | tqp_vector->idx = vector_i; | |
2495 | tqp_vector->mask_addr = vector[vector_i].io_addr; | |
2496 | tqp_vector->vector_irq = vector[vector_i].vector; | |
2497 | tqp_vector->num_tqps++; | |
2498 | ||
2499 | priv->ring_data[i].ring->tqp_vector = tqp_vector; | |
2500 | priv->ring_data[i + tqp_num].ring->tqp_vector = tqp_vector; | |
2501 | } | |
2502 | ||
2503 | for (i = 0; i < vector_num; i++) { | |
2504 | tqp_vector = &priv->tqp_vector[i]; | |
2505 | ||
2506 | tqp_vector->rx_group.total_bytes = 0; | |
2507 | tqp_vector->rx_group.total_packets = 0; | |
2508 | tqp_vector->tx_group.total_bytes = 0; | |
2509 | tqp_vector->tx_group.total_packets = 0; | |
2510 | hns3_vector_gl_rl_init(tqp_vector); | |
2511 | tqp_vector->handle = h; | |
2512 | ||
2513 | ret = hns3_get_vector_ring_chain(tqp_vector, | |
2514 | &vector_ring_chain); | |
2515 | if (ret) | |
2516 | goto out; | |
2517 | ||
2518 | ret = h->ae_algo->ops->map_ring_to_vector(h, | |
2519 | tqp_vector->vector_irq, &vector_ring_chain); | |
2520 | if (ret) | |
2521 | goto out; | |
2522 | ||
2523 | hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain); | |
2524 | ||
2525 | netif_napi_add(priv->netdev, &tqp_vector->napi, | |
2526 | hns3_nic_common_poll, NAPI_POLL_WEIGHT); | |
2527 | } | |
2528 | ||
2529 | out: | |
2530 | devm_kfree(&pdev->dev, vector); | |
2531 | return ret; | |
2532 | } | |
2533 | ||
2534 | static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv) | |
2535 | { | |
2536 | struct hnae3_ring_chain_node vector_ring_chain; | |
2537 | struct hnae3_handle *h = priv->ae_handle; | |
2538 | struct hns3_enet_tqp_vector *tqp_vector; | |
2539 | struct pci_dev *pdev = h->pdev; | |
2540 | int i, ret; | |
2541 | ||
2542 | for (i = 0; i < priv->vector_num; i++) { | |
2543 | tqp_vector = &priv->tqp_vector[i]; | |
2544 | ||
2545 | ret = hns3_get_vector_ring_chain(tqp_vector, | |
2546 | &vector_ring_chain); | |
2547 | if (ret) | |
2548 | return ret; | |
2549 | ||
2550 | ret = h->ae_algo->ops->unmap_ring_from_vector(h, | |
2551 | tqp_vector->vector_irq, &vector_ring_chain); | |
2552 | if (ret) | |
2553 | return ret; | |
2554 | ||
2555 | hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain); | |
2556 | ||
2557 | if (priv->tqp_vector[i].irq_init_flag == HNS3_VECTOR_INITED) { | |
2558 | (void)irq_set_affinity_hint( | |
2559 | priv->tqp_vector[i].vector_irq, | |
2560 | NULL); | |
ae064e61 | 2561 | free_irq(priv->tqp_vector[i].vector_irq, |
2562 | &priv->tqp_vector[i]); | |
76ad4f0e S |
2563 | } |
2564 | ||
2565 | priv->ring_data[i].ring->irq_init_flag = HNS3_VECTOR_NOT_INITED; | |
2566 | ||
2567 | netif_napi_del(&priv->tqp_vector[i].napi); | |
2568 | } | |
2569 | ||
2570 | devm_kfree(&pdev->dev, priv->tqp_vector); | |
2571 | ||
2572 | return 0; | |
2573 | } | |
2574 | ||
2575 | static int hns3_ring_get_cfg(struct hnae3_queue *q, struct hns3_nic_priv *priv, | |
2576 | int ring_type) | |
2577 | { | |
2578 | struct hns3_nic_ring_data *ring_data = priv->ring_data; | |
2579 | int queue_num = priv->ae_handle->kinfo.num_tqps; | |
2580 | struct pci_dev *pdev = priv->ae_handle->pdev; | |
2581 | struct hns3_enet_ring *ring; | |
2582 | ||
2583 | ring = devm_kzalloc(&pdev->dev, sizeof(*ring), GFP_KERNEL); | |
2584 | if (!ring) | |
2585 | return -ENOMEM; | |
2586 | ||
2587 | if (ring_type == HNAE3_RING_TYPE_TX) { | |
2588 | ring_data[q->tqp_index].ring = ring; | |
66b44730 | 2589 | ring_data[q->tqp_index].queue_index = q->tqp_index; |
76ad4f0e S |
2590 | ring->io_base = (u8 __iomem *)q->io_base + HNS3_TX_REG_OFFSET; |
2591 | } else { | |
2592 | ring_data[q->tqp_index + queue_num].ring = ring; | |
66b44730 | 2593 | ring_data[q->tqp_index + queue_num].queue_index = q->tqp_index; |
76ad4f0e S |
2594 | ring->io_base = q->io_base; |
2595 | } | |
2596 | ||
2597 | hnae_set_bit(ring->flag, HNAE3_RING_TYPE_B, ring_type); | |
2598 | ||
76ad4f0e S |
2599 | ring->tqp = q; |
2600 | ring->desc = NULL; | |
2601 | ring->desc_cb = NULL; | |
2602 | ring->dev = priv->dev; | |
2603 | ring->desc_dma_addr = 0; | |
2604 | ring->buf_size = q->buf_size; | |
2605 | ring->desc_num = q->desc_num; | |
2606 | ring->next_to_use = 0; | |
2607 | ring->next_to_clean = 0; | |
2608 | ||
2609 | return 0; | |
2610 | } | |
2611 | ||
2612 | static int hns3_queue_to_ring(struct hnae3_queue *tqp, | |
2613 | struct hns3_nic_priv *priv) | |
2614 | { | |
2615 | int ret; | |
2616 | ||
2617 | ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_TX); | |
2618 | if (ret) | |
2619 | return ret; | |
2620 | ||
2621 | ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_RX); | |
2622 | if (ret) | |
2623 | return ret; | |
2624 | ||
2625 | return 0; | |
2626 | } | |
2627 | ||
2628 | static int hns3_get_ring_config(struct hns3_nic_priv *priv) | |
2629 | { | |
2630 | struct hnae3_handle *h = priv->ae_handle; | |
2631 | struct pci_dev *pdev = h->pdev; | |
2632 | int i, ret; | |
2633 | ||
2634 | priv->ring_data = devm_kzalloc(&pdev->dev, h->kinfo.num_tqps * | |
2635 | sizeof(*priv->ring_data) * 2, | |
2636 | GFP_KERNEL); | |
2637 | if (!priv->ring_data) | |
2638 | return -ENOMEM; | |
2639 | ||
2640 | for (i = 0; i < h->kinfo.num_tqps; i++) { | |
2641 | ret = hns3_queue_to_ring(h->kinfo.tqp[i], priv); | |
2642 | if (ret) | |
2643 | goto err; | |
2644 | } | |
2645 | ||
2646 | return 0; | |
2647 | err: | |
2648 | devm_kfree(&pdev->dev, priv->ring_data); | |
2649 | return ret; | |
2650 | } | |
2651 | ||
2652 | static int hns3_alloc_ring_memory(struct hns3_enet_ring *ring) | |
2653 | { | |
2654 | int ret; | |
2655 | ||
2656 | if (ring->desc_num <= 0 || ring->buf_size <= 0) | |
2657 | return -EINVAL; | |
2658 | ||
2659 | ring->desc_cb = kcalloc(ring->desc_num, sizeof(ring->desc_cb[0]), | |
2660 | GFP_KERNEL); | |
2661 | if (!ring->desc_cb) { | |
2662 | ret = -ENOMEM; | |
2663 | goto out; | |
2664 | } | |
2665 | ||
2666 | ret = hns3_alloc_desc(ring); | |
2667 | if (ret) | |
2668 | goto out_with_desc_cb; | |
2669 | ||
2670 | if (!HNAE3_IS_TX_RING(ring)) { | |
2671 | ret = hns3_alloc_ring_buffers(ring); | |
2672 | if (ret) | |
2673 | goto out_with_desc; | |
2674 | } | |
2675 | ||
2676 | return 0; | |
2677 | ||
2678 | out_with_desc: | |
2679 | hns3_free_desc(ring); | |
2680 | out_with_desc_cb: | |
2681 | kfree(ring->desc_cb); | |
2682 | ring->desc_cb = NULL; | |
2683 | out: | |
2684 | return ret; | |
2685 | } | |
2686 | ||
2687 | static void hns3_fini_ring(struct hns3_enet_ring *ring) | |
2688 | { | |
2689 | hns3_free_desc(ring); | |
2690 | kfree(ring->desc_cb); | |
2691 | ring->desc_cb = NULL; | |
2692 | ring->next_to_clean = 0; | |
2693 | ring->next_to_use = 0; | |
2694 | } | |
2695 | ||
1db9b1bf | 2696 | static int hns3_buf_size2type(u32 buf_size) |
76ad4f0e S |
2697 | { |
2698 | int bd_size_type; | |
2699 | ||
2700 | switch (buf_size) { | |
2701 | case 512: | |
2702 | bd_size_type = HNS3_BD_SIZE_512_TYPE; | |
2703 | break; | |
2704 | case 1024: | |
2705 | bd_size_type = HNS3_BD_SIZE_1024_TYPE; | |
2706 | break; | |
2707 | case 2048: | |
2708 | bd_size_type = HNS3_BD_SIZE_2048_TYPE; | |
2709 | break; | |
2710 | case 4096: | |
2711 | bd_size_type = HNS3_BD_SIZE_4096_TYPE; | |
2712 | break; | |
2713 | default: | |
2714 | bd_size_type = HNS3_BD_SIZE_2048_TYPE; | |
2715 | } | |
2716 | ||
2717 | return bd_size_type; | |
2718 | } | |
2719 | ||
2720 | static void hns3_init_ring_hw(struct hns3_enet_ring *ring) | |
2721 | { | |
2722 | dma_addr_t dma = ring->desc_dma_addr; | |
2723 | struct hnae3_queue *q = ring->tqp; | |
2724 | ||
2725 | if (!HNAE3_IS_TX_RING(ring)) { | |
2726 | hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_L_REG, | |
2727 | (u32)dma); | |
2728 | hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_H_REG, | |
2729 | (u32)((dma >> 31) >> 1)); | |
2730 | ||
2731 | hns3_write_dev(q, HNS3_RING_RX_RING_BD_LEN_REG, | |
2732 | hns3_buf_size2type(ring->buf_size)); | |
2733 | hns3_write_dev(q, HNS3_RING_RX_RING_BD_NUM_REG, | |
2734 | ring->desc_num / 8 - 1); | |
2735 | ||
2736 | } else { | |
2737 | hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_L_REG, | |
2738 | (u32)dma); | |
2739 | hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_H_REG, | |
2740 | (u32)((dma >> 31) >> 1)); | |
2741 | ||
2742 | hns3_write_dev(q, HNS3_RING_TX_RING_BD_LEN_REG, | |
2743 | hns3_buf_size2type(ring->buf_size)); | |
2744 | hns3_write_dev(q, HNS3_RING_TX_RING_BD_NUM_REG, | |
2745 | ring->desc_num / 8 - 1); | |
2746 | } | |
2747 | } | |
2748 | ||
5668abda | 2749 | int hns3_init_all_ring(struct hns3_nic_priv *priv) |
76ad4f0e S |
2750 | { |
2751 | struct hnae3_handle *h = priv->ae_handle; | |
2752 | int ring_num = h->kinfo.num_tqps * 2; | |
2753 | int i, j; | |
2754 | int ret; | |
2755 | ||
2756 | for (i = 0; i < ring_num; i++) { | |
2757 | ret = hns3_alloc_ring_memory(priv->ring_data[i].ring); | |
2758 | if (ret) { | |
2759 | dev_err(priv->dev, | |
2760 | "Alloc ring memory fail! ret=%d\n", ret); | |
2761 | goto out_when_alloc_ring_memory; | |
2762 | } | |
2763 | ||
2764 | hns3_init_ring_hw(priv->ring_data[i].ring); | |
2765 | ||
2766 | u64_stats_init(&priv->ring_data[i].ring->syncp); | |
2767 | } | |
2768 | ||
2769 | return 0; | |
2770 | ||
2771 | out_when_alloc_ring_memory: | |
2772 | for (j = i - 1; j >= 0; j--) | |
ee83f776 | 2773 | hns3_fini_ring(priv->ring_data[j].ring); |
76ad4f0e S |
2774 | |
2775 | return -ENOMEM; | |
2776 | } | |
2777 | ||
5668abda | 2778 | int hns3_uninit_all_ring(struct hns3_nic_priv *priv) |
76ad4f0e S |
2779 | { |
2780 | struct hnae3_handle *h = priv->ae_handle; | |
2781 | int i; | |
2782 | ||
2783 | for (i = 0; i < h->kinfo.num_tqps; i++) { | |
2784 | if (h->ae_algo->ops->reset_queue) | |
2785 | h->ae_algo->ops->reset_queue(h, i); | |
2786 | ||
2787 | hns3_fini_ring(priv->ring_data[i].ring); | |
2788 | hns3_fini_ring(priv->ring_data[i + h->kinfo.num_tqps].ring); | |
2789 | } | |
2790 | ||
2791 | return 0; | |
2792 | } | |
2793 | ||
2794 | /* Set mac addr if it is configured. or leave it to the AE driver */ | |
2795 | static void hns3_init_mac_addr(struct net_device *netdev) | |
2796 | { | |
2797 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
2798 | struct hnae3_handle *h = priv->ae_handle; | |
2799 | u8 mac_addr_temp[ETH_ALEN]; | |
2800 | ||
2801 | if (h->ae_algo->ops->get_mac_addr) { | |
2802 | h->ae_algo->ops->get_mac_addr(h, mac_addr_temp); | |
2803 | ether_addr_copy(netdev->dev_addr, mac_addr_temp); | |
2804 | } | |
2805 | ||
2806 | /* Check if the MAC address is valid, if not get a random one */ | |
2807 | if (!is_valid_ether_addr(netdev->dev_addr)) { | |
2808 | eth_hw_addr_random(netdev); | |
2809 | dev_warn(priv->dev, "using random MAC address %pM\n", | |
2810 | netdev->dev_addr); | |
76ad4f0e | 2811 | } |
139e8792 L |
2812 | |
2813 | if (h->ae_algo->ops->set_mac_addr) | |
2814 | h->ae_algo->ops->set_mac_addr(h, netdev->dev_addr); | |
2815 | ||
76ad4f0e S |
2816 | } |
2817 | ||
2818 | static void hns3_nic_set_priv_ops(struct net_device *netdev) | |
2819 | { | |
2820 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
2821 | ||
2822 | if ((netdev->features & NETIF_F_TSO) || | |
2823 | (netdev->features & NETIF_F_TSO6)) { | |
2824 | priv->ops.fill_desc = hns3_fill_desc_tso; | |
2825 | priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso; | |
2826 | } else { | |
2827 | priv->ops.fill_desc = hns3_fill_desc; | |
2828 | priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx; | |
2829 | } | |
2830 | } | |
2831 | ||
2832 | static int hns3_client_init(struct hnae3_handle *handle) | |
2833 | { | |
2834 | struct pci_dev *pdev = handle->pdev; | |
2835 | struct hns3_nic_priv *priv; | |
2836 | struct net_device *netdev; | |
2837 | int ret; | |
2838 | ||
2839 | netdev = alloc_etherdev_mq(sizeof(struct hns3_nic_priv), | |
2840 | handle->kinfo.num_tqps); | |
2841 | if (!netdev) | |
2842 | return -ENOMEM; | |
2843 | ||
2844 | priv = netdev_priv(netdev); | |
2845 | priv->dev = &pdev->dev; | |
2846 | priv->netdev = netdev; | |
2847 | priv->ae_handle = handle; | |
f8fa222c L |
2848 | priv->last_reset_time = jiffies; |
2849 | priv->reset_level = HNAE3_FUNC_RESET; | |
2850 | priv->tx_timeout_count = 0; | |
76ad4f0e S |
2851 | |
2852 | handle->kinfo.netdev = netdev; | |
2853 | handle->priv = (void *)priv; | |
2854 | ||
2855 | hns3_init_mac_addr(netdev); | |
2856 | ||
2857 | hns3_set_default_feature(netdev); | |
2858 | ||
2859 | netdev->watchdog_timeo = HNS3_TX_TIMEOUT; | |
2860 | netdev->priv_flags |= IFF_UNICAST_FLT; | |
2861 | netdev->netdev_ops = &hns3_nic_netdev_ops; | |
2862 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2863 | hns3_ethtool_set_ops(netdev); | |
2864 | hns3_nic_set_priv_ops(netdev); | |
2865 | ||
2866 | /* Carrier off reporting is important to ethtool even BEFORE open */ | |
2867 | netif_carrier_off(netdev); | |
2868 | ||
2869 | ret = hns3_get_ring_config(priv); | |
2870 | if (ret) { | |
2871 | ret = -ENOMEM; | |
2872 | goto out_get_ring_cfg; | |
2873 | } | |
2874 | ||
2875 | ret = hns3_nic_init_vector_data(priv); | |
2876 | if (ret) { | |
2877 | ret = -ENOMEM; | |
2878 | goto out_init_vector_data; | |
2879 | } | |
2880 | ||
2881 | ret = hns3_init_all_ring(priv); | |
2882 | if (ret) { | |
2883 | ret = -ENOMEM; | |
2884 | goto out_init_ring_data; | |
2885 | } | |
2886 | ||
2887 | ret = register_netdev(netdev); | |
2888 | if (ret) { | |
2889 | dev_err(priv->dev, "probe register netdev fail!\n"); | |
2890 | goto out_reg_netdev_fail; | |
2891 | } | |
2892 | ||
986743db YL |
2893 | hns3_dcbnl_setup(handle); |
2894 | ||
a8e8b7ff S |
2895 | /* MTU range: (ETH_MIN_MTU(kernel default) - 9706) */ |
2896 | netdev->max_mtu = HNS3_MAX_MTU - (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); | |
2897 | ||
76ad4f0e S |
2898 | return ret; |
2899 | ||
2900 | out_reg_netdev_fail: | |
2901 | out_init_ring_data: | |
2902 | (void)hns3_nic_uninit_vector_data(priv); | |
2903 | priv->ring_data = NULL; | |
2904 | out_init_vector_data: | |
2905 | out_get_ring_cfg: | |
2906 | priv->ae_handle = NULL; | |
2907 | free_netdev(netdev); | |
2908 | return ret; | |
2909 | } | |
2910 | ||
2911 | static void hns3_client_uninit(struct hnae3_handle *handle, bool reset) | |
2912 | { | |
2913 | struct net_device *netdev = handle->kinfo.netdev; | |
2914 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
2915 | int ret; | |
2916 | ||
2917 | if (netdev->reg_state != NETREG_UNINITIALIZED) | |
2918 | unregister_netdev(netdev); | |
2919 | ||
2920 | ret = hns3_nic_uninit_vector_data(priv); | |
2921 | if (ret) | |
2922 | netdev_err(netdev, "uninit vector error\n"); | |
2923 | ||
2924 | ret = hns3_uninit_all_ring(priv); | |
2925 | if (ret) | |
2926 | netdev_err(netdev, "uninit ring error\n"); | |
2927 | ||
2928 | priv->ring_data = NULL; | |
2929 | ||
2930 | free_netdev(netdev); | |
2931 | } | |
2932 | ||
2933 | static void hns3_link_status_change(struct hnae3_handle *handle, bool linkup) | |
2934 | { | |
2935 | struct net_device *netdev = handle->kinfo.netdev; | |
2936 | ||
2937 | if (!netdev) | |
2938 | return; | |
2939 | ||
2940 | if (linkup) { | |
2941 | netif_carrier_on(netdev); | |
2942 | netif_tx_wake_all_queues(netdev); | |
2943 | netdev_info(netdev, "link up\n"); | |
2944 | } else { | |
2945 | netif_carrier_off(netdev); | |
2946 | netif_tx_stop_all_queues(netdev); | |
2947 | netdev_info(netdev, "link down\n"); | |
2948 | } | |
2949 | } | |
2950 | ||
9df8f79a YL |
2951 | static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc) |
2952 | { | |
2953 | struct hnae3_knic_private_info *kinfo = &handle->kinfo; | |
2954 | struct net_device *ndev = kinfo->netdev; | |
075cfdd6 | 2955 | bool if_running; |
9df8f79a YL |
2956 | int ret; |
2957 | u8 i; | |
2958 | ||
2959 | if (tc > HNAE3_MAX_TC) | |
2960 | return -EINVAL; | |
2961 | ||
2962 | if (!ndev) | |
2963 | return -ENODEV; | |
2964 | ||
075cfdd6 CIK |
2965 | if_running = netif_running(ndev); |
2966 | ||
9df8f79a YL |
2967 | ret = netdev_set_num_tc(ndev, tc); |
2968 | if (ret) | |
2969 | return ret; | |
2970 | ||
2971 | if (if_running) { | |
2972 | (void)hns3_nic_net_stop(ndev); | |
2973 | msleep(100); | |
2974 | } | |
2975 | ||
2976 | ret = (kinfo->dcb_ops && kinfo->dcb_ops->map_update) ? | |
2977 | kinfo->dcb_ops->map_update(handle) : -EOPNOTSUPP; | |
2978 | if (ret) | |
2979 | goto err_out; | |
2980 | ||
2981 | if (tc <= 1) { | |
2982 | netdev_reset_tc(ndev); | |
2983 | goto out; | |
2984 | } | |
2985 | ||
2986 | for (i = 0; i < HNAE3_MAX_TC; i++) { | |
2987 | struct hnae3_tc_info *tc_info = &kinfo->tc_info[i]; | |
2988 | ||
2989 | if (tc_info->enable) | |
2990 | netdev_set_tc_queue(ndev, | |
2991 | tc_info->tc, | |
2992 | tc_info->tqp_count, | |
2993 | tc_info->tqp_offset); | |
2994 | } | |
2995 | ||
2996 | for (i = 0; i < HNAE3_MAX_USER_PRIO; i++) { | |
2997 | netdev_set_prio_tc_map(ndev, i, | |
2998 | kinfo->prio_tc[i]); | |
2999 | } | |
3000 | ||
3001 | out: | |
3002 | ret = hns3_nic_set_real_num_queue(ndev); | |
3003 | ||
3004 | err_out: | |
3005 | if (if_running) | |
3006 | (void)hns3_nic_net_open(ndev); | |
3007 | ||
3008 | return ret; | |
3009 | } | |
3010 | ||
bb6b94a8 L |
3011 | static void hns3_recover_hw_addr(struct net_device *ndev) |
3012 | { | |
3013 | struct netdev_hw_addr_list *list; | |
3014 | struct netdev_hw_addr *ha, *tmp; | |
3015 | ||
3016 | /* go through and sync uc_addr entries to the device */ | |
3017 | list = &ndev->uc; | |
3018 | list_for_each_entry_safe(ha, tmp, &list->list, list) | |
3019 | hns3_nic_uc_sync(ndev, ha->addr); | |
3020 | ||
3021 | /* go through and sync mc_addr entries to the device */ | |
3022 | list = &ndev->mc; | |
3023 | list_for_each_entry_safe(ha, tmp, &list->list, list) | |
3024 | hns3_nic_mc_sync(ndev, ha->addr); | |
3025 | } | |
3026 | ||
3027 | static void hns3_drop_skb_data(struct hns3_enet_ring *ring, struct sk_buff *skb) | |
3028 | { | |
3029 | dev_kfree_skb_any(skb); | |
3030 | } | |
3031 | ||
3032 | static void hns3_clear_all_ring(struct hnae3_handle *h) | |
3033 | { | |
3034 | struct net_device *ndev = h->kinfo.netdev; | |
3035 | struct hns3_nic_priv *priv = netdev_priv(ndev); | |
3036 | u32 i; | |
3037 | ||
3038 | for (i = 0; i < h->kinfo.num_tqps; i++) { | |
3039 | struct netdev_queue *dev_queue; | |
3040 | struct hns3_enet_ring *ring; | |
3041 | ||
3042 | ring = priv->ring_data[i].ring; | |
3043 | hns3_clean_tx_ring(ring, ring->desc_num); | |
3044 | dev_queue = netdev_get_tx_queue(ndev, | |
3045 | priv->ring_data[i].queue_index); | |
3046 | netdev_tx_reset_queue(dev_queue); | |
3047 | ||
3048 | ring = priv->ring_data[i + h->kinfo.num_tqps].ring; | |
3049 | hns3_clean_rx_ring(ring, ring->desc_num, hns3_drop_skb_data); | |
3050 | } | |
3051 | } | |
3052 | ||
3053 | static int hns3_reset_notify_down_enet(struct hnae3_handle *handle) | |
3054 | { | |
3055 | struct hnae3_knic_private_info *kinfo = &handle->kinfo; | |
3056 | struct net_device *ndev = kinfo->netdev; | |
3057 | ||
3058 | if (!netif_running(ndev)) | |
3059 | return -EIO; | |
3060 | ||
3061 | return hns3_nic_net_stop(ndev); | |
3062 | } | |
3063 | ||
3064 | static int hns3_reset_notify_up_enet(struct hnae3_handle *handle) | |
3065 | { | |
3066 | struct hnae3_knic_private_info *kinfo = &handle->kinfo; | |
3067 | struct hns3_nic_priv *priv = netdev_priv(kinfo->netdev); | |
3068 | int ret = 0; | |
3069 | ||
3070 | if (netif_running(kinfo->netdev)) { | |
3071 | ret = hns3_nic_net_up(kinfo->netdev); | |
3072 | if (ret) { | |
3073 | netdev_err(kinfo->netdev, | |
3074 | "hns net up fail, ret=%d!\n", ret); | |
3075 | return ret; | |
3076 | } | |
3077 | ||
3078 | priv->last_reset_time = jiffies; | |
3079 | } | |
3080 | ||
3081 | return ret; | |
3082 | } | |
3083 | ||
3084 | static int hns3_reset_notify_init_enet(struct hnae3_handle *handle) | |
3085 | { | |
3086 | struct net_device *netdev = handle->kinfo.netdev; | |
3087 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
3088 | int ret; | |
3089 | ||
3090 | priv->reset_level = 1; | |
3091 | hns3_init_mac_addr(netdev); | |
3092 | hns3_nic_set_rx_mode(netdev); | |
3093 | hns3_recover_hw_addr(netdev); | |
3094 | ||
3095 | /* Carrier off reporting is important to ethtool even BEFORE open */ | |
3096 | netif_carrier_off(netdev); | |
3097 | ||
3098 | ret = hns3_get_ring_config(priv); | |
3099 | if (ret) | |
3100 | return ret; | |
3101 | ||
3102 | ret = hns3_nic_init_vector_data(priv); | |
3103 | if (ret) | |
3104 | return ret; | |
3105 | ||
3106 | ret = hns3_init_all_ring(priv); | |
3107 | if (ret) { | |
3108 | hns3_nic_uninit_vector_data(priv); | |
3109 | priv->ring_data = NULL; | |
3110 | } | |
3111 | ||
3112 | return ret; | |
3113 | } | |
3114 | ||
3115 | static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle) | |
3116 | { | |
3117 | struct net_device *netdev = handle->kinfo.netdev; | |
3118 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
3119 | int ret; | |
3120 | ||
3121 | hns3_clear_all_ring(handle); | |
3122 | ||
3123 | ret = hns3_nic_uninit_vector_data(priv); | |
3124 | if (ret) { | |
3125 | netdev_err(netdev, "uninit vector error\n"); | |
3126 | return ret; | |
3127 | } | |
3128 | ||
3129 | ret = hns3_uninit_all_ring(priv); | |
3130 | if (ret) | |
3131 | netdev_err(netdev, "uninit ring error\n"); | |
3132 | ||
3133 | priv->ring_data = NULL; | |
3134 | ||
3135 | return ret; | |
3136 | } | |
3137 | ||
3138 | static int hns3_reset_notify(struct hnae3_handle *handle, | |
3139 | enum hnae3_reset_notify_type type) | |
3140 | { | |
3141 | int ret = 0; | |
3142 | ||
3143 | switch (type) { | |
3144 | case HNAE3_UP_CLIENT: | |
3145 | ret = hns3_reset_notify_up_enet(handle); | |
3146 | break; | |
3147 | case HNAE3_DOWN_CLIENT: | |
3148 | ret = hns3_reset_notify_down_enet(handle); | |
3149 | break; | |
3150 | case HNAE3_INIT_CLIENT: | |
3151 | ret = hns3_reset_notify_init_enet(handle); | |
3152 | break; | |
3153 | case HNAE3_UNINIT_CLIENT: | |
3154 | ret = hns3_reset_notify_uninit_enet(handle); | |
3155 | break; | |
3156 | default: | |
3157 | break; | |
3158 | } | |
3159 | ||
3160 | return ret; | |
3161 | } | |
3162 | ||
1db9b1bf | 3163 | static const struct hnae3_client_ops client_ops = { |
76ad4f0e S |
3164 | .init_instance = hns3_client_init, |
3165 | .uninit_instance = hns3_client_uninit, | |
3166 | .link_status_change = hns3_link_status_change, | |
9df8f79a | 3167 | .setup_tc = hns3_client_setup_tc, |
bb6b94a8 | 3168 | .reset_notify = hns3_reset_notify, |
76ad4f0e S |
3169 | }; |
3170 | ||
3171 | /* hns3_init_module - Driver registration routine | |
3172 | * hns3_init_module is the first routine called when the driver is | |
3173 | * loaded. All it does is register with the PCI subsystem. | |
3174 | */ | |
3175 | static int __init hns3_init_module(void) | |
3176 | { | |
3177 | int ret; | |
3178 | ||
3179 | pr_info("%s: %s - version\n", hns3_driver_name, hns3_driver_string); | |
3180 | pr_info("%s: %s\n", hns3_driver_name, hns3_copyright); | |
3181 | ||
3182 | client.type = HNAE3_CLIENT_KNIC; | |
3183 | snprintf(client.name, HNAE3_CLIENT_NAME_LENGTH - 1, "%s", | |
3184 | hns3_driver_name); | |
3185 | ||
3186 | client.ops = &client_ops; | |
3187 | ||
3188 | ret = hnae3_register_client(&client); | |
3189 | if (ret) | |
3190 | return ret; | |
3191 | ||
3192 | ret = pci_register_driver(&hns3_driver); | |
3193 | if (ret) | |
3194 | hnae3_unregister_client(&client); | |
3195 | ||
3196 | return ret; | |
3197 | } | |
3198 | module_init(hns3_init_module); | |
3199 | ||
3200 | /* hns3_exit_module - Driver exit cleanup routine | |
3201 | * hns3_exit_module is called just before the driver is removed | |
3202 | * from memory. | |
3203 | */ | |
3204 | static void __exit hns3_exit_module(void) | |
3205 | { | |
3206 | pci_unregister_driver(&hns3_driver); | |
3207 | hnae3_unregister_client(&client); | |
3208 | } | |
3209 | module_exit(hns3_exit_module); | |
3210 | ||
3211 | MODULE_DESCRIPTION("HNS3: Hisilicon Ethernet Driver"); | |
3212 | MODULE_AUTHOR("Huawei Tech. Co., Ltd."); | |
3213 | MODULE_LICENSE("GPL"); | |
3214 | MODULE_ALIAS("pci:hns-nic"); |