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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}, |
424eb834 SM |
55 | {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_VF), 0}, |
56 | {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_DCB_PFC_VF), 0}, | |
76ad4f0e S |
57 | /* required last entry */ |
58 | {0, } | |
59 | }; | |
60 | MODULE_DEVICE_TABLE(pci, hns3_pci_tbl); | |
61 | ||
62 | static irqreturn_t hns3_irq_handle(int irq, void *dev) | |
63 | { | |
64 | struct hns3_enet_tqp_vector *tqp_vector = dev; | |
65 | ||
66 | napi_schedule(&tqp_vector->napi); | |
67 | ||
68 | return IRQ_HANDLED; | |
69 | } | |
70 | ||
71 | static void hns3_nic_uninit_irq(struct hns3_nic_priv *priv) | |
72 | { | |
73 | struct hns3_enet_tqp_vector *tqp_vectors; | |
74 | unsigned int i; | |
75 | ||
76 | for (i = 0; i < priv->vector_num; i++) { | |
77 | tqp_vectors = &priv->tqp_vector[i]; | |
78 | ||
79 | if (tqp_vectors->irq_init_flag != HNS3_VECTOR_INITED) | |
80 | continue; | |
81 | ||
82 | /* release the irq resource */ | |
83 | free_irq(tqp_vectors->vector_irq, tqp_vectors); | |
84 | tqp_vectors->irq_init_flag = HNS3_VECTOR_NOT_INITED; | |
85 | } | |
86 | } | |
87 | ||
88 | static int hns3_nic_init_irq(struct hns3_nic_priv *priv) | |
89 | { | |
90 | struct hns3_enet_tqp_vector *tqp_vectors; | |
91 | int txrx_int_idx = 0; | |
92 | int rx_int_idx = 0; | |
93 | int tx_int_idx = 0; | |
94 | unsigned int i; | |
95 | int ret; | |
96 | ||
97 | for (i = 0; i < priv->vector_num; i++) { | |
98 | tqp_vectors = &priv->tqp_vector[i]; | |
99 | ||
100 | if (tqp_vectors->irq_init_flag == HNS3_VECTOR_INITED) | |
101 | continue; | |
102 | ||
103 | if (tqp_vectors->tx_group.ring && tqp_vectors->rx_group.ring) { | |
104 | snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1, | |
105 | "%s-%s-%d", priv->netdev->name, "TxRx", | |
106 | txrx_int_idx++); | |
107 | txrx_int_idx++; | |
108 | } else if (tqp_vectors->rx_group.ring) { | |
109 | snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1, | |
110 | "%s-%s-%d", priv->netdev->name, "Rx", | |
111 | rx_int_idx++); | |
112 | } else if (tqp_vectors->tx_group.ring) { | |
113 | snprintf(tqp_vectors->name, HNAE3_INT_NAME_LEN - 1, | |
114 | "%s-%s-%d", priv->netdev->name, "Tx", | |
115 | tx_int_idx++); | |
116 | } else { | |
117 | /* Skip this unused q_vector */ | |
118 | continue; | |
119 | } | |
120 | ||
121 | tqp_vectors->name[HNAE3_INT_NAME_LEN - 1] = '\0'; | |
122 | ||
123 | ret = request_irq(tqp_vectors->vector_irq, hns3_irq_handle, 0, | |
124 | tqp_vectors->name, | |
125 | tqp_vectors); | |
126 | if (ret) { | |
127 | netdev_err(priv->netdev, "request irq(%d) fail\n", | |
128 | tqp_vectors->vector_irq); | |
129 | return ret; | |
130 | } | |
131 | ||
132 | tqp_vectors->irq_init_flag = HNS3_VECTOR_INITED; | |
133 | } | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | static void hns3_mask_vector_irq(struct hns3_enet_tqp_vector *tqp_vector, | |
139 | u32 mask_en) | |
140 | { | |
141 | writel(mask_en, tqp_vector->mask_addr); | |
142 | } | |
143 | ||
144 | static void hns3_vector_enable(struct hns3_enet_tqp_vector *tqp_vector) | |
145 | { | |
146 | napi_enable(&tqp_vector->napi); | |
147 | ||
148 | /* enable vector */ | |
149 | hns3_mask_vector_irq(tqp_vector, 1); | |
150 | } | |
151 | ||
152 | static void hns3_vector_disable(struct hns3_enet_tqp_vector *tqp_vector) | |
153 | { | |
154 | /* disable vector */ | |
155 | hns3_mask_vector_irq(tqp_vector, 0); | |
156 | ||
157 | disable_irq(tqp_vector->vector_irq); | |
158 | napi_disable(&tqp_vector->napi); | |
159 | } | |
160 | ||
434776a5 FL |
161 | void hns3_set_vector_coalesce_rl(struct hns3_enet_tqp_vector *tqp_vector, |
162 | u32 rl_value) | |
76ad4f0e | 163 | { |
434776a5 FL |
164 | u32 rl_reg = hns3_rl_usec_to_reg(rl_value); |
165 | ||
76ad4f0e S |
166 | /* this defines the configuration for RL (Interrupt Rate Limiter). |
167 | * Rl defines rate of interrupts i.e. number of interrupts-per-second | |
168 | * GL and RL(Rate Limiter) are 2 ways to acheive interrupt coalescing | |
169 | */ | |
434776a5 | 170 | |
9bc727a9 YL |
171 | if (rl_reg > 0 && !tqp_vector->tx_group.coal.gl_adapt_enable && |
172 | !tqp_vector->rx_group.coal.gl_adapt_enable) | |
434776a5 FL |
173 | /* According to the hardware, the range of rl_reg is |
174 | * 0-59 and the unit is 4. | |
175 | */ | |
176 | rl_reg |= HNS3_INT_RL_ENABLE_MASK; | |
177 | ||
178 | writel(rl_reg, tqp_vector->mask_addr + HNS3_VECTOR_RL_OFFSET); | |
179 | } | |
180 | ||
181 | void hns3_set_vector_coalesce_rx_gl(struct hns3_enet_tqp_vector *tqp_vector, | |
182 | u32 gl_value) | |
183 | { | |
184 | u32 rx_gl_reg = hns3_gl_usec_to_reg(gl_value); | |
185 | ||
186 | writel(rx_gl_reg, tqp_vector->mask_addr + HNS3_VECTOR_GL0_OFFSET); | |
187 | } | |
188 | ||
189 | void hns3_set_vector_coalesce_tx_gl(struct hns3_enet_tqp_vector *tqp_vector, | |
190 | u32 gl_value) | |
191 | { | |
192 | u32 tx_gl_reg = hns3_gl_usec_to_reg(gl_value); | |
193 | ||
194 | writel(tx_gl_reg, tqp_vector->mask_addr + HNS3_VECTOR_GL1_OFFSET); | |
76ad4f0e S |
195 | } |
196 | ||
5fd4789a FL |
197 | static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector *tqp_vector, |
198 | struct hns3_nic_priv *priv) | |
76ad4f0e | 199 | { |
5fd4789a FL |
200 | struct hnae3_handle *h = priv->ae_handle; |
201 | ||
76ad4f0e S |
202 | /* initialize the configuration for interrupt coalescing. |
203 | * 1. GL (Interrupt Gap Limiter) | |
204 | * 2. RL (Interrupt Rate Limiter) | |
205 | */ | |
206 | ||
5fd4789a | 207 | /* Default: enable interrupt coalescing self-adaptive and GL */ |
9bc727a9 YL |
208 | tqp_vector->tx_group.coal.gl_adapt_enable = 1; |
209 | tqp_vector->rx_group.coal.gl_adapt_enable = 1; | |
5fd4789a | 210 | |
9bc727a9 YL |
211 | tqp_vector->tx_group.coal.int_gl = HNS3_INT_GL_50K; |
212 | tqp_vector->rx_group.coal.int_gl = HNS3_INT_GL_50K; | |
5fd4789a | 213 | |
5fd4789a FL |
214 | /* Default: disable RL */ |
215 | h->kinfo.int_rl_setting = 0; | |
5fd4789a | 216 | |
cd9d187b | 217 | tqp_vector->int_adapt_down = HNS3_INT_ADAPT_DOWN_START; |
9bc727a9 YL |
218 | tqp_vector->rx_group.coal.flow_level = HNS3_FLOW_LOW; |
219 | tqp_vector->tx_group.coal.flow_level = HNS3_FLOW_LOW; | |
76ad4f0e S |
220 | } |
221 | ||
dd38c726 YL |
222 | static void hns3_vector_gl_rl_init_hw(struct hns3_enet_tqp_vector *tqp_vector, |
223 | struct hns3_nic_priv *priv) | |
224 | { | |
225 | struct hnae3_handle *h = priv->ae_handle; | |
226 | ||
227 | hns3_set_vector_coalesce_tx_gl(tqp_vector, | |
9bc727a9 | 228 | tqp_vector->tx_group.coal.int_gl); |
dd38c726 | 229 | hns3_set_vector_coalesce_rx_gl(tqp_vector, |
9bc727a9 | 230 | tqp_vector->rx_group.coal.int_gl); |
dd38c726 YL |
231 | hns3_set_vector_coalesce_rl(tqp_vector, h->kinfo.int_rl_setting); |
232 | } | |
233 | ||
9df8f79a YL |
234 | static int hns3_nic_set_real_num_queue(struct net_device *netdev) |
235 | { | |
9780cb97 | 236 | struct hnae3_handle *h = hns3_get_handle(netdev); |
9df8f79a YL |
237 | struct hnae3_knic_private_info *kinfo = &h->kinfo; |
238 | unsigned int queue_size = kinfo->rss_size * kinfo->num_tc; | |
239 | int ret; | |
240 | ||
241 | ret = netif_set_real_num_tx_queues(netdev, queue_size); | |
242 | if (ret) { | |
243 | netdev_err(netdev, | |
244 | "netif_set_real_num_tx_queues fail, ret=%d!\n", | |
245 | ret); | |
246 | return ret; | |
247 | } | |
248 | ||
249 | ret = netif_set_real_num_rx_queues(netdev, queue_size); | |
250 | if (ret) { | |
251 | netdev_err(netdev, | |
252 | "netif_set_real_num_rx_queues fail, ret=%d!\n", ret); | |
253 | return ret; | |
254 | } | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
678335a1 PL |
259 | static u16 hns3_get_max_available_channels(struct hnae3_handle *h) |
260 | { | |
261 | u16 free_tqps, max_rss_size, max_tqps; | |
262 | ||
263 | h->ae_algo->ops->get_tqps_and_rss_info(h, &free_tqps, &max_rss_size); | |
264 | max_tqps = h->kinfo.num_tc * max_rss_size; | |
265 | ||
266 | return min_t(u16, max_tqps, (free_tqps + h->kinfo.num_tqps)); | |
267 | } | |
268 | ||
76ad4f0e S |
269 | static int hns3_nic_net_up(struct net_device *netdev) |
270 | { | |
271 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
272 | struct hnae3_handle *h = priv->ae_handle; | |
273 | int i, j; | |
274 | int ret; | |
275 | ||
276 | /* get irq resource for all vectors */ | |
277 | ret = hns3_nic_init_irq(priv); | |
278 | if (ret) { | |
279 | netdev_err(netdev, "hns init irq failed! ret=%d\n", ret); | |
280 | return ret; | |
281 | } | |
282 | ||
283 | /* enable the vectors */ | |
284 | for (i = 0; i < priv->vector_num; i++) | |
285 | hns3_vector_enable(&priv->tqp_vector[i]); | |
286 | ||
287 | /* start the ae_dev */ | |
288 | ret = h->ae_algo->ops->start ? h->ae_algo->ops->start(h) : 0; | |
289 | if (ret) | |
290 | goto out_start_err; | |
291 | ||
b875cc37 JS |
292 | clear_bit(HNS3_NIC_STATE_DOWN, &priv->state); |
293 | ||
76ad4f0e S |
294 | return 0; |
295 | ||
296 | out_start_err: | |
297 | for (j = i - 1; j >= 0; j--) | |
298 | hns3_vector_disable(&priv->tqp_vector[j]); | |
299 | ||
300 | hns3_nic_uninit_irq(priv); | |
301 | ||
302 | return ret; | |
303 | } | |
304 | ||
305 | static int hns3_nic_net_open(struct net_device *netdev) | |
306 | { | |
f8fa222c | 307 | struct hns3_nic_priv *priv = netdev_priv(netdev); |
76ad4f0e S |
308 | int ret; |
309 | ||
310 | netif_carrier_off(netdev); | |
311 | ||
9df8f79a YL |
312 | ret = hns3_nic_set_real_num_queue(netdev); |
313 | if (ret) | |
76ad4f0e | 314 | return ret; |
76ad4f0e S |
315 | |
316 | ret = hns3_nic_net_up(netdev); | |
317 | if (ret) { | |
318 | netdev_err(netdev, | |
319 | "hns net up fail, ret=%d!\n", ret); | |
320 | return ret; | |
321 | } | |
322 | ||
6d4c3981 | 323 | priv->ae_handle->last_reset_time = jiffies; |
76ad4f0e S |
324 | return 0; |
325 | } | |
326 | ||
327 | static void hns3_nic_net_down(struct net_device *netdev) | |
328 | { | |
329 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
330 | const struct hnae3_ae_ops *ops; | |
331 | int i; | |
332 | ||
b875cc37 JS |
333 | if (test_and_set_bit(HNS3_NIC_STATE_DOWN, &priv->state)) |
334 | return; | |
335 | ||
76ad4f0e S |
336 | /* stop ae_dev */ |
337 | ops = priv->ae_handle->ae_algo->ops; | |
338 | if (ops->stop) | |
339 | ops->stop(priv->ae_handle); | |
340 | ||
341 | /* disable vectors */ | |
342 | for (i = 0; i < priv->vector_num; i++) | |
343 | hns3_vector_disable(&priv->tqp_vector[i]); | |
344 | ||
345 | /* free irq resources */ | |
346 | hns3_nic_uninit_irq(priv); | |
347 | } | |
348 | ||
349 | static int hns3_nic_net_stop(struct net_device *netdev) | |
350 | { | |
351 | netif_tx_stop_all_queues(netdev); | |
352 | netif_carrier_off(netdev); | |
353 | ||
354 | hns3_nic_net_down(netdev); | |
355 | ||
356 | return 0; | |
357 | } | |
358 | ||
76ad4f0e S |
359 | static int hns3_nic_uc_sync(struct net_device *netdev, |
360 | const unsigned char *addr) | |
361 | { | |
9780cb97 | 362 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
363 | |
364 | if (h->ae_algo->ops->add_uc_addr) | |
365 | return h->ae_algo->ops->add_uc_addr(h, addr); | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
370 | static int hns3_nic_uc_unsync(struct net_device *netdev, | |
371 | const unsigned char *addr) | |
372 | { | |
9780cb97 | 373 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
374 | |
375 | if (h->ae_algo->ops->rm_uc_addr) | |
376 | return h->ae_algo->ops->rm_uc_addr(h, addr); | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | static int hns3_nic_mc_sync(struct net_device *netdev, | |
382 | const unsigned char *addr) | |
383 | { | |
9780cb97 | 384 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e | 385 | |
720a8478 | 386 | if (h->ae_algo->ops->add_mc_addr) |
76ad4f0e S |
387 | return h->ae_algo->ops->add_mc_addr(h, addr); |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
392 | static int hns3_nic_mc_unsync(struct net_device *netdev, | |
393 | const unsigned char *addr) | |
394 | { | |
9780cb97 | 395 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e | 396 | |
720a8478 | 397 | if (h->ae_algo->ops->rm_mc_addr) |
76ad4f0e S |
398 | return h->ae_algo->ops->rm_mc_addr(h, addr); |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
1db9b1bf | 403 | static void hns3_nic_set_rx_mode(struct net_device *netdev) |
76ad4f0e | 404 | { |
9780cb97 | 405 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
406 | |
407 | if (h->ae_algo->ops->set_promisc_mode) { | |
408 | if (netdev->flags & IFF_PROMISC) | |
409 | h->ae_algo->ops->set_promisc_mode(h, 1); | |
410 | else | |
411 | h->ae_algo->ops->set_promisc_mode(h, 0); | |
412 | } | |
413 | if (__dev_uc_sync(netdev, hns3_nic_uc_sync, hns3_nic_uc_unsync)) | |
414 | netdev_err(netdev, "sync uc address fail\n"); | |
415 | if (netdev->flags & IFF_MULTICAST) | |
416 | if (__dev_mc_sync(netdev, hns3_nic_mc_sync, hns3_nic_mc_unsync)) | |
417 | netdev_err(netdev, "sync mc address fail\n"); | |
418 | } | |
419 | ||
420 | static int hns3_set_tso(struct sk_buff *skb, u32 *paylen, | |
421 | u16 *mss, u32 *type_cs_vlan_tso) | |
422 | { | |
423 | u32 l4_offset, hdr_len; | |
424 | union l3_hdr_info l3; | |
425 | union l4_hdr_info l4; | |
426 | u32 l4_paylen; | |
427 | int ret; | |
428 | ||
429 | if (!skb_is_gso(skb)) | |
430 | return 0; | |
431 | ||
432 | ret = skb_cow_head(skb, 0); | |
433 | if (ret) | |
434 | return ret; | |
435 | ||
436 | l3.hdr = skb_network_header(skb); | |
437 | l4.hdr = skb_transport_header(skb); | |
438 | ||
439 | /* Software should clear the IPv4's checksum field when tso is | |
440 | * needed. | |
441 | */ | |
442 | if (l3.v4->version == 4) | |
443 | l3.v4->check = 0; | |
444 | ||
445 | /* tunnel packet.*/ | |
446 | if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE | | |
447 | SKB_GSO_GRE_CSUM | | |
448 | SKB_GSO_UDP_TUNNEL | | |
449 | SKB_GSO_UDP_TUNNEL_CSUM)) { | |
450 | if ((!(skb_shinfo(skb)->gso_type & | |
451 | SKB_GSO_PARTIAL)) && | |
452 | (skb_shinfo(skb)->gso_type & | |
453 | SKB_GSO_UDP_TUNNEL_CSUM)) { | |
454 | /* Software should clear the udp's checksum | |
455 | * field when tso is needed. | |
456 | */ | |
457 | l4.udp->check = 0; | |
458 | } | |
459 | /* reset l3&l4 pointers from outer to inner headers */ | |
460 | l3.hdr = skb_inner_network_header(skb); | |
461 | l4.hdr = skb_inner_transport_header(skb); | |
462 | ||
463 | /* Software should clear the IPv4's checksum field when | |
464 | * tso is needed. | |
465 | */ | |
466 | if (l3.v4->version == 4) | |
467 | l3.v4->check = 0; | |
468 | } | |
469 | ||
470 | /* normal or tunnel packet*/ | |
471 | l4_offset = l4.hdr - skb->data; | |
472 | hdr_len = (l4.tcp->doff * 4) + l4_offset; | |
473 | ||
474 | /* remove payload length from inner pseudo checksum when tso*/ | |
475 | l4_paylen = skb->len - l4_offset; | |
476 | csum_replace_by_diff(&l4.tcp->check, | |
477 | (__force __wsum)htonl(l4_paylen)); | |
478 | ||
479 | /* find the txbd field values */ | |
480 | *paylen = skb->len - hdr_len; | |
481 | hnae_set_bit(*type_cs_vlan_tso, | |
482 | HNS3_TXD_TSO_B, 1); | |
483 | ||
484 | /* get MSS for TSO */ | |
485 | *mss = skb_shinfo(skb)->gso_size; | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
1898d4e4 S |
490 | static int hns3_get_l4_protocol(struct sk_buff *skb, u8 *ol4_proto, |
491 | u8 *il4_proto) | |
76ad4f0e S |
492 | { |
493 | union { | |
494 | struct iphdr *v4; | |
495 | struct ipv6hdr *v6; | |
496 | unsigned char *hdr; | |
497 | } l3; | |
498 | unsigned char *l4_hdr; | |
499 | unsigned char *exthdr; | |
500 | u8 l4_proto_tmp; | |
501 | __be16 frag_off; | |
502 | ||
503 | /* find outer header point */ | |
504 | l3.hdr = skb_network_header(skb); | |
35f58fd7 | 505 | l4_hdr = skb_transport_header(skb); |
76ad4f0e S |
506 | |
507 | if (skb->protocol == htons(ETH_P_IPV6)) { | |
508 | exthdr = l3.hdr + sizeof(*l3.v6); | |
509 | l4_proto_tmp = l3.v6->nexthdr; | |
510 | if (l4_hdr != exthdr) | |
511 | ipv6_skip_exthdr(skb, exthdr - skb->data, | |
512 | &l4_proto_tmp, &frag_off); | |
513 | } else if (skb->protocol == htons(ETH_P_IP)) { | |
514 | l4_proto_tmp = l3.v4->protocol; | |
1898d4e4 S |
515 | } else { |
516 | return -EINVAL; | |
76ad4f0e S |
517 | } |
518 | ||
519 | *ol4_proto = l4_proto_tmp; | |
520 | ||
521 | /* tunnel packet */ | |
522 | if (!skb->encapsulation) { | |
523 | *il4_proto = 0; | |
1898d4e4 | 524 | return 0; |
76ad4f0e S |
525 | } |
526 | ||
527 | /* find inner header point */ | |
528 | l3.hdr = skb_inner_network_header(skb); | |
529 | l4_hdr = skb_inner_transport_header(skb); | |
530 | ||
531 | if (l3.v6->version == 6) { | |
532 | exthdr = l3.hdr + sizeof(*l3.v6); | |
533 | l4_proto_tmp = l3.v6->nexthdr; | |
534 | if (l4_hdr != exthdr) | |
535 | ipv6_skip_exthdr(skb, exthdr - skb->data, | |
536 | &l4_proto_tmp, &frag_off); | |
537 | } else if (l3.v4->version == 4) { | |
538 | l4_proto_tmp = l3.v4->protocol; | |
539 | } | |
540 | ||
541 | *il4_proto = l4_proto_tmp; | |
1898d4e4 S |
542 | |
543 | return 0; | |
76ad4f0e S |
544 | } |
545 | ||
546 | static void hns3_set_l2l3l4_len(struct sk_buff *skb, u8 ol4_proto, | |
547 | u8 il4_proto, u32 *type_cs_vlan_tso, | |
548 | u32 *ol_type_vlan_len_msec) | |
549 | { | |
550 | union { | |
551 | struct iphdr *v4; | |
552 | struct ipv6hdr *v6; | |
553 | unsigned char *hdr; | |
554 | } l3; | |
555 | union { | |
556 | struct tcphdr *tcp; | |
557 | struct udphdr *udp; | |
558 | struct gre_base_hdr *gre; | |
559 | unsigned char *hdr; | |
560 | } l4; | |
561 | unsigned char *l2_hdr; | |
562 | u8 l4_proto = ol4_proto; | |
563 | u32 ol2_len; | |
564 | u32 ol3_len; | |
565 | u32 ol4_len; | |
566 | u32 l2_len; | |
567 | u32 l3_len; | |
568 | ||
569 | l3.hdr = skb_network_header(skb); | |
570 | l4.hdr = skb_transport_header(skb); | |
571 | ||
572 | /* compute L2 header size for normal packet, defined in 2 Bytes */ | |
573 | l2_len = l3.hdr - skb->data; | |
574 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M, | |
575 | HNS3_TXD_L2LEN_S, l2_len >> 1); | |
576 | ||
577 | /* tunnel packet*/ | |
578 | if (skb->encapsulation) { | |
579 | /* compute OL2 header size, defined in 2 Bytes */ | |
580 | ol2_len = l2_len; | |
581 | hnae_set_field(*ol_type_vlan_len_msec, | |
582 | HNS3_TXD_L2LEN_M, | |
583 | HNS3_TXD_L2LEN_S, ol2_len >> 1); | |
584 | ||
585 | /* compute OL3 header size, defined in 4 Bytes */ | |
586 | ol3_len = l4.hdr - l3.hdr; | |
587 | hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L3LEN_M, | |
588 | HNS3_TXD_L3LEN_S, ol3_len >> 2); | |
589 | ||
590 | /* MAC in UDP, MAC in GRE (0x6558)*/ | |
591 | if ((ol4_proto == IPPROTO_UDP) || (ol4_proto == IPPROTO_GRE)) { | |
592 | /* switch MAC header ptr from outer to inner header.*/ | |
593 | l2_hdr = skb_inner_mac_header(skb); | |
594 | ||
595 | /* compute OL4 header size, defined in 4 Bytes. */ | |
596 | ol4_len = l2_hdr - l4.hdr; | |
597 | hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_L4LEN_M, | |
598 | HNS3_TXD_L4LEN_S, ol4_len >> 2); | |
599 | ||
600 | /* switch IP header ptr from outer to inner header */ | |
601 | l3.hdr = skb_inner_network_header(skb); | |
602 | ||
603 | /* compute inner l2 header size, defined in 2 Bytes. */ | |
604 | l2_len = l3.hdr - l2_hdr; | |
605 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_M, | |
606 | HNS3_TXD_L2LEN_S, l2_len >> 1); | |
607 | } else { | |
608 | /* skb packet types not supported by hardware, | |
609 | * txbd len fild doesn't be filled. | |
610 | */ | |
611 | return; | |
612 | } | |
613 | ||
614 | /* switch L4 header pointer from outer to inner */ | |
615 | l4.hdr = skb_inner_transport_header(skb); | |
616 | ||
617 | l4_proto = il4_proto; | |
618 | } | |
619 | ||
620 | /* compute inner(/normal) L3 header size, defined in 4 Bytes */ | |
621 | l3_len = l4.hdr - l3.hdr; | |
622 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3LEN_M, | |
623 | HNS3_TXD_L3LEN_S, l3_len >> 2); | |
624 | ||
625 | /* compute inner(/normal) L4 header size, defined in 4 Bytes */ | |
626 | switch (l4_proto) { | |
627 | case IPPROTO_TCP: | |
628 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M, | |
629 | HNS3_TXD_L4LEN_S, l4.tcp->doff); | |
630 | break; | |
631 | case IPPROTO_SCTP: | |
632 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M, | |
633 | HNS3_TXD_L4LEN_S, (sizeof(struct sctphdr) >> 2)); | |
634 | break; | |
635 | case IPPROTO_UDP: | |
636 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L4LEN_M, | |
637 | HNS3_TXD_L4LEN_S, (sizeof(struct udphdr) >> 2)); | |
638 | break; | |
639 | default: | |
640 | /* skb packet types not supported by hardware, | |
641 | * txbd len fild doesn't be filled. | |
642 | */ | |
643 | return; | |
644 | } | |
645 | } | |
646 | ||
647 | static int hns3_set_l3l4_type_csum(struct sk_buff *skb, u8 ol4_proto, | |
648 | u8 il4_proto, u32 *type_cs_vlan_tso, | |
649 | u32 *ol_type_vlan_len_msec) | |
650 | { | |
651 | union { | |
652 | struct iphdr *v4; | |
653 | struct ipv6hdr *v6; | |
654 | unsigned char *hdr; | |
655 | } l3; | |
656 | u32 l4_proto = ol4_proto; | |
657 | ||
658 | l3.hdr = skb_network_header(skb); | |
659 | ||
660 | /* define OL3 type and tunnel type(OL4).*/ | |
661 | if (skb->encapsulation) { | |
662 | /* define outer network header type.*/ | |
663 | if (skb->protocol == htons(ETH_P_IP)) { | |
664 | if (skb_is_gso(skb)) | |
665 | hnae_set_field(*ol_type_vlan_len_msec, | |
666 | HNS3_TXD_OL3T_M, HNS3_TXD_OL3T_S, | |
667 | HNS3_OL3T_IPV4_CSUM); | |
668 | else | |
669 | hnae_set_field(*ol_type_vlan_len_msec, | |
670 | HNS3_TXD_OL3T_M, HNS3_TXD_OL3T_S, | |
671 | HNS3_OL3T_IPV4_NO_CSUM); | |
672 | ||
673 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
674 | hnae_set_field(*ol_type_vlan_len_msec, HNS3_TXD_OL3T_M, | |
675 | HNS3_TXD_OL3T_S, HNS3_OL3T_IPV6); | |
676 | } | |
677 | ||
678 | /* define tunnel type(OL4).*/ | |
679 | switch (l4_proto) { | |
680 | case IPPROTO_UDP: | |
681 | hnae_set_field(*ol_type_vlan_len_msec, | |
682 | HNS3_TXD_TUNTYPE_M, | |
683 | HNS3_TXD_TUNTYPE_S, | |
684 | HNS3_TUN_MAC_IN_UDP); | |
685 | break; | |
686 | case IPPROTO_GRE: | |
687 | hnae_set_field(*ol_type_vlan_len_msec, | |
688 | HNS3_TXD_TUNTYPE_M, | |
689 | HNS3_TXD_TUNTYPE_S, | |
690 | HNS3_TUN_NVGRE); | |
691 | break; | |
692 | default: | |
693 | /* drop the skb tunnel packet if hardware don't support, | |
694 | * because hardware can't calculate csum when TSO. | |
695 | */ | |
696 | if (skb_is_gso(skb)) | |
697 | return -EDOM; | |
698 | ||
699 | /* the stack computes the IP header already, | |
700 | * driver calculate l4 checksum when not TSO. | |
701 | */ | |
702 | skb_checksum_help(skb); | |
703 | return 0; | |
704 | } | |
705 | ||
706 | l3.hdr = skb_inner_network_header(skb); | |
707 | l4_proto = il4_proto; | |
708 | } | |
709 | ||
710 | if (l3.v4->version == 4) { | |
711 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M, | |
712 | HNS3_TXD_L3T_S, HNS3_L3T_IPV4); | |
713 | ||
714 | /* the stack computes the IP header already, the only time we | |
715 | * need the hardware to recompute it is in the case of TSO. | |
716 | */ | |
717 | if (skb_is_gso(skb)) | |
718 | hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L3CS_B, 1); | |
719 | ||
720 | hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1); | |
721 | } else if (l3.v6->version == 6) { | |
722 | hnae_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_M, | |
723 | HNS3_TXD_L3T_S, HNS3_L3T_IPV6); | |
724 | hnae_set_bit(*type_cs_vlan_tso, HNS3_TXD_L4CS_B, 1); | |
725 | } | |
726 | ||
727 | switch (l4_proto) { | |
728 | case IPPROTO_TCP: | |
729 | hnae_set_field(*type_cs_vlan_tso, | |
730 | HNS3_TXD_L4T_M, | |
731 | HNS3_TXD_L4T_S, | |
732 | HNS3_L4T_TCP); | |
733 | break; | |
734 | case IPPROTO_UDP: | |
735 | hnae_set_field(*type_cs_vlan_tso, | |
736 | HNS3_TXD_L4T_M, | |
737 | HNS3_TXD_L4T_S, | |
738 | HNS3_L4T_UDP); | |
739 | break; | |
740 | case IPPROTO_SCTP: | |
741 | hnae_set_field(*type_cs_vlan_tso, | |
742 | HNS3_TXD_L4T_M, | |
743 | HNS3_TXD_L4T_S, | |
744 | HNS3_L4T_SCTP); | |
745 | break; | |
746 | default: | |
747 | /* drop the skb tunnel packet if hardware don't support, | |
748 | * because hardware can't calculate csum when TSO. | |
749 | */ | |
750 | if (skb_is_gso(skb)) | |
751 | return -EDOM; | |
752 | ||
753 | /* the stack computes the IP header already, | |
754 | * driver calculate l4 checksum when not TSO. | |
755 | */ | |
756 | skb_checksum_help(skb); | |
757 | return 0; | |
758 | } | |
759 | ||
760 | return 0; | |
761 | } | |
762 | ||
763 | static void hns3_set_txbd_baseinfo(u16 *bdtp_fe_sc_vld_ra_ri, int frag_end) | |
764 | { | |
765 | /* Config bd buffer end */ | |
766 | hnae_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_BDTYPE_M, | |
3c8f5c03 | 767 | HNS3_TXD_BDTYPE_S, 0); |
76ad4f0e S |
768 | hnae_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_FE_B, !!frag_end); |
769 | hnae_set_bit(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_VLD_B, 1); | |
7036d26f | 770 | hnae_set_field(*bdtp_fe_sc_vld_ra_ri, HNS3_TXD_SC_M, HNS3_TXD_SC_S, 0); |
76ad4f0e S |
771 | } |
772 | ||
9699cffe PL |
773 | static int hns3_fill_desc_vtags(struct sk_buff *skb, |
774 | struct hns3_enet_ring *tx_ring, | |
775 | u32 *inner_vlan_flag, | |
776 | u32 *out_vlan_flag, | |
777 | u16 *inner_vtag, | |
778 | u16 *out_vtag) | |
779 | { | |
780 | #define HNS3_TX_VLAN_PRIO_SHIFT 13 | |
781 | ||
782 | if (skb->protocol == htons(ETH_P_8021Q) && | |
783 | !(tx_ring->tqp->handle->kinfo.netdev->features & | |
784 | NETIF_F_HW_VLAN_CTAG_TX)) { | |
785 | /* When HW VLAN acceleration is turned off, and the stack | |
786 | * sets the protocol to 802.1q, the driver just need to | |
787 | * set the protocol to the encapsulated ethertype. | |
788 | */ | |
789 | skb->protocol = vlan_get_protocol(skb); | |
790 | return 0; | |
791 | } | |
792 | ||
793 | if (skb_vlan_tag_present(skb)) { | |
794 | u16 vlan_tag; | |
795 | ||
796 | vlan_tag = skb_vlan_tag_get(skb); | |
797 | vlan_tag |= (skb->priority & 0x7) << HNS3_TX_VLAN_PRIO_SHIFT; | |
798 | ||
799 | /* Based on hw strategy, use out_vtag in two layer tag case, | |
800 | * and use inner_vtag in one tag case. | |
801 | */ | |
802 | if (skb->protocol == htons(ETH_P_8021Q)) { | |
803 | hnae_set_bit(*out_vlan_flag, HNS3_TXD_OVLAN_B, 1); | |
804 | *out_vtag = vlan_tag; | |
805 | } else { | |
806 | hnae_set_bit(*inner_vlan_flag, HNS3_TXD_VLAN_B, 1); | |
807 | *inner_vtag = vlan_tag; | |
808 | } | |
809 | } else if (skb->protocol == htons(ETH_P_8021Q)) { | |
810 | struct vlan_ethhdr *vhdr; | |
811 | int rc; | |
812 | ||
813 | rc = skb_cow_head(skb, 0); | |
814 | if (rc < 0) | |
815 | return rc; | |
816 | vhdr = (struct vlan_ethhdr *)skb->data; | |
817 | vhdr->h_vlan_TCI |= cpu_to_be16((skb->priority & 0x7) | |
818 | << HNS3_TX_VLAN_PRIO_SHIFT); | |
819 | } | |
820 | ||
821 | skb->protocol = vlan_get_protocol(skb); | |
822 | return 0; | |
823 | } | |
824 | ||
76ad4f0e S |
825 | static int hns3_fill_desc(struct hns3_enet_ring *ring, void *priv, |
826 | int size, dma_addr_t dma, int frag_end, | |
827 | enum hns_desc_type type) | |
828 | { | |
829 | struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; | |
830 | struct hns3_desc *desc = &ring->desc[ring->next_to_use]; | |
831 | u32 ol_type_vlan_len_msec = 0; | |
832 | u16 bdtp_fe_sc_vld_ra_ri = 0; | |
833 | u32 type_cs_vlan_tso = 0; | |
834 | struct sk_buff *skb; | |
9699cffe PL |
835 | u16 inner_vtag = 0; |
836 | u16 out_vtag = 0; | |
76ad4f0e S |
837 | u32 paylen = 0; |
838 | u16 mss = 0; | |
839 | __be16 protocol; | |
840 | u8 ol4_proto; | |
841 | u8 il4_proto; | |
842 | int ret; | |
843 | ||
844 | /* The txbd's baseinfo of DESC_TYPE_PAGE & DESC_TYPE_SKB */ | |
845 | desc_cb->priv = priv; | |
846 | desc_cb->length = size; | |
847 | desc_cb->dma = dma; | |
848 | desc_cb->type = type; | |
849 | ||
850 | /* now, fill the descriptor */ | |
851 | desc->addr = cpu_to_le64(dma); | |
852 | desc->tx.send_size = cpu_to_le16((u16)size); | |
853 | hns3_set_txbd_baseinfo(&bdtp_fe_sc_vld_ra_ri, frag_end); | |
854 | desc->tx.bdtp_fe_sc_vld_ra_ri = cpu_to_le16(bdtp_fe_sc_vld_ra_ri); | |
855 | ||
856 | if (type == DESC_TYPE_SKB) { | |
857 | skb = (struct sk_buff *)priv; | |
a90bb9a5 | 858 | paylen = skb->len; |
76ad4f0e | 859 | |
9699cffe PL |
860 | ret = hns3_fill_desc_vtags(skb, ring, &type_cs_vlan_tso, |
861 | &ol_type_vlan_len_msec, | |
862 | &inner_vtag, &out_vtag); | |
863 | if (unlikely(ret)) | |
864 | return ret; | |
865 | ||
76ad4f0e S |
866 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
867 | skb_reset_mac_len(skb); | |
868 | protocol = skb->protocol; | |
869 | ||
1898d4e4 S |
870 | ret = hns3_get_l4_protocol(skb, &ol4_proto, &il4_proto); |
871 | if (ret) | |
872 | return ret; | |
76ad4f0e S |
873 | hns3_set_l2l3l4_len(skb, ol4_proto, il4_proto, |
874 | &type_cs_vlan_tso, | |
875 | &ol_type_vlan_len_msec); | |
876 | ret = hns3_set_l3l4_type_csum(skb, ol4_proto, il4_proto, | |
877 | &type_cs_vlan_tso, | |
878 | &ol_type_vlan_len_msec); | |
879 | if (ret) | |
880 | return ret; | |
881 | ||
882 | ret = hns3_set_tso(skb, &paylen, &mss, | |
883 | &type_cs_vlan_tso); | |
884 | if (ret) | |
885 | return ret; | |
886 | } | |
887 | ||
888 | /* Set txbd */ | |
889 | desc->tx.ol_type_vlan_len_msec = | |
890 | cpu_to_le32(ol_type_vlan_len_msec); | |
891 | desc->tx.type_cs_vlan_tso_len = | |
892 | cpu_to_le32(type_cs_vlan_tso); | |
a90bb9a5 | 893 | desc->tx.paylen = cpu_to_le32(paylen); |
76ad4f0e | 894 | desc->tx.mss = cpu_to_le16(mss); |
9699cffe PL |
895 | desc->tx.vlan_tag = cpu_to_le16(inner_vtag); |
896 | desc->tx.outer_vlan_tag = cpu_to_le16(out_vtag); | |
76ad4f0e S |
897 | } |
898 | ||
899 | /* move ring pointer to next.*/ | |
900 | ring_ptr_move_fw(ring, next_to_use); | |
901 | ||
902 | return 0; | |
903 | } | |
904 | ||
905 | static int hns3_fill_desc_tso(struct hns3_enet_ring *ring, void *priv, | |
906 | int size, dma_addr_t dma, int frag_end, | |
907 | enum hns_desc_type type) | |
908 | { | |
909 | unsigned int frag_buf_num; | |
910 | unsigned int k; | |
911 | int sizeoflast; | |
912 | int ret; | |
913 | ||
914 | frag_buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE; | |
915 | sizeoflast = size % HNS3_MAX_BD_SIZE; | |
916 | sizeoflast = sizeoflast ? sizeoflast : HNS3_MAX_BD_SIZE; | |
917 | ||
918 | /* When the frag size is bigger than hardware, split this frag */ | |
919 | for (k = 0; k < frag_buf_num; k++) { | |
920 | ret = hns3_fill_desc(ring, priv, | |
921 | (k == frag_buf_num - 1) ? | |
922 | sizeoflast : HNS3_MAX_BD_SIZE, | |
923 | dma + HNS3_MAX_BD_SIZE * k, | |
924 | frag_end && (k == frag_buf_num - 1) ? 1 : 0, | |
925 | (type == DESC_TYPE_SKB && !k) ? | |
926 | DESC_TYPE_SKB : DESC_TYPE_PAGE); | |
927 | if (ret) | |
928 | return ret; | |
929 | } | |
930 | ||
931 | return 0; | |
932 | } | |
933 | ||
934 | static int hns3_nic_maybe_stop_tso(struct sk_buff **out_skb, int *bnum, | |
935 | struct hns3_enet_ring *ring) | |
936 | { | |
937 | struct sk_buff *skb = *out_skb; | |
938 | struct skb_frag_struct *frag; | |
939 | int bdnum_for_frag; | |
940 | int frag_num; | |
941 | int buf_num; | |
942 | int size; | |
943 | int i; | |
944 | ||
945 | size = skb_headlen(skb); | |
946 | buf_num = (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE; | |
947 | ||
948 | frag_num = skb_shinfo(skb)->nr_frags; | |
949 | for (i = 0; i < frag_num; i++) { | |
950 | frag = &skb_shinfo(skb)->frags[i]; | |
951 | size = skb_frag_size(frag); | |
952 | bdnum_for_frag = | |
953 | (size + HNS3_MAX_BD_SIZE - 1) / HNS3_MAX_BD_SIZE; | |
954 | if (bdnum_for_frag > HNS3_MAX_BD_PER_FRAG) | |
955 | return -ENOMEM; | |
956 | ||
957 | buf_num += bdnum_for_frag; | |
958 | } | |
959 | ||
960 | if (buf_num > ring_space(ring)) | |
961 | return -EBUSY; | |
962 | ||
963 | *bnum = buf_num; | |
964 | return 0; | |
965 | } | |
966 | ||
967 | static int hns3_nic_maybe_stop_tx(struct sk_buff **out_skb, int *bnum, | |
968 | struct hns3_enet_ring *ring) | |
969 | { | |
970 | struct sk_buff *skb = *out_skb; | |
971 | int buf_num; | |
972 | ||
973 | /* No. of segments (plus a header) */ | |
974 | buf_num = skb_shinfo(skb)->nr_frags + 1; | |
975 | ||
976 | if (buf_num > ring_space(ring)) | |
977 | return -EBUSY; | |
978 | ||
979 | *bnum = buf_num; | |
980 | ||
981 | return 0; | |
982 | } | |
983 | ||
984 | static void hns_nic_dma_unmap(struct hns3_enet_ring *ring, int next_to_use_orig) | |
985 | { | |
986 | struct device *dev = ring_to_dev(ring); | |
987 | unsigned int i; | |
988 | ||
989 | for (i = 0; i < ring->desc_num; i++) { | |
990 | /* check if this is where we started */ | |
991 | if (ring->next_to_use == next_to_use_orig) | |
992 | break; | |
993 | ||
994 | /* unmap the descriptor dma address */ | |
995 | if (ring->desc_cb[ring->next_to_use].type == DESC_TYPE_SKB) | |
996 | dma_unmap_single(dev, | |
997 | ring->desc_cb[ring->next_to_use].dma, | |
998 | ring->desc_cb[ring->next_to_use].length, | |
999 | DMA_TO_DEVICE); | |
1000 | else | |
1001 | dma_unmap_page(dev, | |
1002 | ring->desc_cb[ring->next_to_use].dma, | |
1003 | ring->desc_cb[ring->next_to_use].length, | |
1004 | DMA_TO_DEVICE); | |
1005 | ||
1006 | /* rollback one */ | |
1007 | ring_ptr_move_bw(ring, next_to_use); | |
1008 | } | |
1009 | } | |
1010 | ||
d43e5aca | 1011 | netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev) |
76ad4f0e S |
1012 | { |
1013 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
1014 | struct hns3_nic_ring_data *ring_data = | |
1015 | &tx_ring_data(priv, skb->queue_mapping); | |
1016 | struct hns3_enet_ring *ring = ring_data->ring; | |
1017 | struct device *dev = priv->dev; | |
1018 | struct netdev_queue *dev_queue; | |
1019 | struct skb_frag_struct *frag; | |
1020 | int next_to_use_head; | |
1021 | int next_to_use_frag; | |
1022 | dma_addr_t dma; | |
1023 | int buf_num; | |
1024 | int seg_num; | |
1025 | int size; | |
1026 | int ret; | |
1027 | int i; | |
1028 | ||
1029 | /* Prefetch the data used later */ | |
1030 | prefetch(skb->data); | |
1031 | ||
1032 | switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) { | |
1033 | case -EBUSY: | |
1034 | u64_stats_update_begin(&ring->syncp); | |
1035 | ring->stats.tx_busy++; | |
1036 | u64_stats_update_end(&ring->syncp); | |
1037 | ||
1038 | goto out_net_tx_busy; | |
1039 | case -ENOMEM: | |
1040 | u64_stats_update_begin(&ring->syncp); | |
1041 | ring->stats.sw_err_cnt++; | |
1042 | u64_stats_update_end(&ring->syncp); | |
1043 | netdev_err(netdev, "no memory to xmit!\n"); | |
1044 | ||
1045 | goto out_err_tx_ok; | |
1046 | default: | |
1047 | break; | |
1048 | } | |
1049 | ||
1050 | /* No. of segments (plus a header) */ | |
1051 | seg_num = skb_shinfo(skb)->nr_frags + 1; | |
1052 | /* Fill the first part */ | |
1053 | size = skb_headlen(skb); | |
1054 | ||
1055 | next_to_use_head = ring->next_to_use; | |
1056 | ||
1057 | dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE); | |
1058 | if (dma_mapping_error(dev, dma)) { | |
1059 | netdev_err(netdev, "TX head DMA map failed\n"); | |
1060 | ring->stats.sw_err_cnt++; | |
1061 | goto out_err_tx_ok; | |
1062 | } | |
1063 | ||
1064 | ret = priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0, | |
1065 | DESC_TYPE_SKB); | |
1066 | if (ret) | |
1067 | goto head_dma_map_err; | |
1068 | ||
1069 | next_to_use_frag = ring->next_to_use; | |
1070 | /* Fill the fragments */ | |
1071 | for (i = 1; i < seg_num; i++) { | |
1072 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
1073 | size = skb_frag_size(frag); | |
1074 | dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE); | |
1075 | if (dma_mapping_error(dev, dma)) { | |
1076 | netdev_err(netdev, "TX frag(%d) DMA map failed\n", i); | |
1077 | ring->stats.sw_err_cnt++; | |
1078 | goto frag_dma_map_err; | |
1079 | } | |
1080 | ret = priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma, | |
1081 | seg_num - 1 == i ? 1 : 0, | |
1082 | DESC_TYPE_PAGE); | |
1083 | ||
1084 | if (ret) | |
1085 | goto frag_dma_map_err; | |
1086 | } | |
1087 | ||
1088 | /* Complete translate all packets */ | |
1089 | dev_queue = netdev_get_tx_queue(netdev, ring_data->queue_index); | |
1090 | netdev_tx_sent_queue(dev_queue, skb->len); | |
1091 | ||
1092 | wmb(); /* Commit all data before submit */ | |
1093 | ||
1094 | hnae_queue_xmit(ring->tqp, buf_num); | |
1095 | ||
1096 | return NETDEV_TX_OK; | |
1097 | ||
1098 | frag_dma_map_err: | |
1099 | hns_nic_dma_unmap(ring, next_to_use_frag); | |
1100 | ||
1101 | head_dma_map_err: | |
1102 | hns_nic_dma_unmap(ring, next_to_use_head); | |
1103 | ||
1104 | out_err_tx_ok: | |
1105 | dev_kfree_skb_any(skb); | |
1106 | return NETDEV_TX_OK; | |
1107 | ||
1108 | out_net_tx_busy: | |
1109 | netif_stop_subqueue(netdev, ring_data->queue_index); | |
1110 | smp_mb(); /* Commit all data before submit */ | |
1111 | ||
1112 | return NETDEV_TX_BUSY; | |
1113 | } | |
1114 | ||
1115 | static int hns3_nic_net_set_mac_address(struct net_device *netdev, void *p) | |
1116 | { | |
9780cb97 | 1117 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
1118 | struct sockaddr *mac_addr = p; |
1119 | int ret; | |
1120 | ||
1121 | if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data)) | |
1122 | return -EADDRNOTAVAIL; | |
1123 | ||
59098055 | 1124 | ret = h->ae_algo->ops->set_mac_addr(h, mac_addr->sa_data, false); |
76ad4f0e S |
1125 | if (ret) { |
1126 | netdev_err(netdev, "set_mac_address fail, ret=%d!\n", ret); | |
1127 | return ret; | |
1128 | } | |
1129 | ||
1130 | ether_addr_copy(netdev->dev_addr, mac_addr->sa_data); | |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | static int hns3_nic_set_features(struct net_device *netdev, | |
1136 | netdev_features_t features) | |
1137 | { | |
181d454b | 1138 | netdev_features_t changed = netdev->features ^ features; |
76ad4f0e | 1139 | struct hns3_nic_priv *priv = netdev_priv(netdev); |
052ece6d | 1140 | struct hnae3_handle *h = priv->ae_handle; |
052ece6d | 1141 | int ret; |
76ad4f0e | 1142 | |
181d454b JS |
1143 | if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) { |
1144 | if (features & (NETIF_F_TSO | NETIF_F_TSO6)) { | |
1145 | priv->ops.fill_desc = hns3_fill_desc_tso; | |
1146 | priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso; | |
1147 | } else { | |
1148 | priv->ops.fill_desc = hns3_fill_desc; | |
1149 | priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx; | |
1150 | } | |
76ad4f0e S |
1151 | } |
1152 | ||
bd368416 JS |
1153 | if ((changed & NETIF_F_HW_VLAN_CTAG_FILTER) && |
1154 | h->ae_algo->ops->enable_vlan_filter) { | |
181d454b JS |
1155 | if (features & NETIF_F_HW_VLAN_CTAG_FILTER) |
1156 | h->ae_algo->ops->enable_vlan_filter(h, true); | |
1157 | else | |
1158 | h->ae_algo->ops->enable_vlan_filter(h, false); | |
1159 | } | |
391b5e93 | 1160 | |
bd368416 JS |
1161 | if ((changed & NETIF_F_HW_VLAN_CTAG_RX) && |
1162 | h->ae_algo->ops->enable_hw_strip_rxvtag) { | |
052ece6d PL |
1163 | if (features & NETIF_F_HW_VLAN_CTAG_RX) |
1164 | ret = h->ae_algo->ops->enable_hw_strip_rxvtag(h, true); | |
1165 | else | |
1166 | ret = h->ae_algo->ops->enable_hw_strip_rxvtag(h, false); | |
1167 | ||
1168 | if (ret) | |
1169 | return ret; | |
1170 | } | |
1171 | ||
76ad4f0e S |
1172 | netdev->features = features; |
1173 | return 0; | |
1174 | } | |
1175 | ||
6c88d9d7 PL |
1176 | static void hns3_nic_get_stats64(struct net_device *netdev, |
1177 | struct rtnl_link_stats64 *stats) | |
76ad4f0e S |
1178 | { |
1179 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
1180 | int queue_num = priv->ae_handle->kinfo.num_tqps; | |
c5f65480 | 1181 | struct hnae3_handle *handle = priv->ae_handle; |
76ad4f0e S |
1182 | struct hns3_enet_ring *ring; |
1183 | unsigned int start; | |
1184 | unsigned int idx; | |
1185 | u64 tx_bytes = 0; | |
1186 | u64 rx_bytes = 0; | |
1187 | u64 tx_pkts = 0; | |
1188 | u64 rx_pkts = 0; | |
d2a5dca8 JS |
1189 | u64 tx_drop = 0; |
1190 | u64 rx_drop = 0; | |
76ad4f0e | 1191 | |
b875cc37 JS |
1192 | if (test_bit(HNS3_NIC_STATE_DOWN, &priv->state)) |
1193 | return; | |
1194 | ||
c5f65480 JS |
1195 | handle->ae_algo->ops->update_stats(handle, &netdev->stats); |
1196 | ||
76ad4f0e S |
1197 | for (idx = 0; idx < queue_num; idx++) { |
1198 | /* fetch the tx stats */ | |
1199 | ring = priv->ring_data[idx].ring; | |
1200 | do { | |
d36d36ce | 1201 | start = u64_stats_fetch_begin_irq(&ring->syncp); |
76ad4f0e S |
1202 | tx_bytes += ring->stats.tx_bytes; |
1203 | tx_pkts += ring->stats.tx_pkts; | |
d2a5dca8 JS |
1204 | tx_drop += ring->stats.tx_busy; |
1205 | tx_drop += ring->stats.sw_err_cnt; | |
76ad4f0e S |
1206 | } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); |
1207 | ||
1208 | /* fetch the rx stats */ | |
1209 | ring = priv->ring_data[idx + queue_num].ring; | |
1210 | do { | |
d36d36ce | 1211 | start = u64_stats_fetch_begin_irq(&ring->syncp); |
76ad4f0e S |
1212 | rx_bytes += ring->stats.rx_bytes; |
1213 | rx_pkts += ring->stats.rx_pkts; | |
d2a5dca8 JS |
1214 | rx_drop += ring->stats.non_vld_descs; |
1215 | rx_drop += ring->stats.err_pkt_len; | |
1216 | rx_drop += ring->stats.l2_err; | |
76ad4f0e S |
1217 | } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); |
1218 | } | |
1219 | ||
1220 | stats->tx_bytes = tx_bytes; | |
1221 | stats->tx_packets = tx_pkts; | |
1222 | stats->rx_bytes = rx_bytes; | |
1223 | stats->rx_packets = rx_pkts; | |
1224 | ||
1225 | stats->rx_errors = netdev->stats.rx_errors; | |
1226 | stats->multicast = netdev->stats.multicast; | |
1227 | stats->rx_length_errors = netdev->stats.rx_length_errors; | |
1228 | stats->rx_crc_errors = netdev->stats.rx_crc_errors; | |
1229 | stats->rx_missed_errors = netdev->stats.rx_missed_errors; | |
1230 | ||
1231 | stats->tx_errors = netdev->stats.tx_errors; | |
d2a5dca8 JS |
1232 | stats->rx_dropped = rx_drop + netdev->stats.rx_dropped; |
1233 | stats->tx_dropped = tx_drop + netdev->stats.tx_dropped; | |
76ad4f0e S |
1234 | stats->collisions = netdev->stats.collisions; |
1235 | stats->rx_over_errors = netdev->stats.rx_over_errors; | |
1236 | stats->rx_frame_errors = netdev->stats.rx_frame_errors; | |
1237 | stats->rx_fifo_errors = netdev->stats.rx_fifo_errors; | |
1238 | stats->tx_aborted_errors = netdev->stats.tx_aborted_errors; | |
1239 | stats->tx_carrier_errors = netdev->stats.tx_carrier_errors; | |
1240 | stats->tx_fifo_errors = netdev->stats.tx_fifo_errors; | |
1241 | stats->tx_heartbeat_errors = netdev->stats.tx_heartbeat_errors; | |
1242 | stats->tx_window_errors = netdev->stats.tx_window_errors; | |
1243 | stats->rx_compressed = netdev->stats.rx_compressed; | |
1244 | stats->tx_compressed = netdev->stats.tx_compressed; | |
1245 | } | |
1246 | ||
30d240df | 1247 | static int hns3_setup_tc(struct net_device *netdev, void *type_data) |
76ad4f0e | 1248 | { |
30d240df | 1249 | struct tc_mqprio_qopt_offload *mqprio_qopt = type_data; |
9780cb97 | 1250 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e | 1251 | struct hnae3_knic_private_info *kinfo = &h->kinfo; |
30d240df YL |
1252 | u8 *prio_tc = mqprio_qopt->qopt.prio_tc_map; |
1253 | u8 tc = mqprio_qopt->qopt.num_tc; | |
1254 | u16 mode = mqprio_qopt->mode; | |
1255 | u8 hw = mqprio_qopt->qopt.hw; | |
1256 | bool if_running; | |
76ad4f0e S |
1257 | unsigned int i; |
1258 | int ret; | |
1259 | ||
30d240df YL |
1260 | if (!((hw == TC_MQPRIO_HW_OFFLOAD_TCS && |
1261 | mode == TC_MQPRIO_MODE_CHANNEL) || (!hw && tc == 0))) | |
1262 | return -EOPNOTSUPP; | |
1263 | ||
76ad4f0e S |
1264 | if (tc > HNAE3_MAX_TC) |
1265 | return -EINVAL; | |
1266 | ||
76ad4f0e S |
1267 | if (!netdev) |
1268 | return -EINVAL; | |
1269 | ||
30d240df YL |
1270 | if_running = netif_running(netdev); |
1271 | if (if_running) { | |
1272 | hns3_nic_net_stop(netdev); | |
1273 | msleep(100); | |
76ad4f0e S |
1274 | } |
1275 | ||
30d240df YL |
1276 | ret = (kinfo->dcb_ops && kinfo->dcb_ops->setup_tc) ? |
1277 | kinfo->dcb_ops->setup_tc(h, tc, prio_tc) : -EOPNOTSUPP; | |
76ad4f0e | 1278 | if (ret) |
30d240df YL |
1279 | goto out; |
1280 | ||
1281 | if (tc <= 1) { | |
1282 | netdev_reset_tc(netdev); | |
1283 | } else { | |
1284 | ret = netdev_set_num_tc(netdev, tc); | |
1285 | if (ret) | |
1286 | goto out; | |
1287 | ||
1288 | for (i = 0; i < HNAE3_MAX_TC; i++) { | |
1289 | if (!kinfo->tc_info[i].enable) | |
1290 | continue; | |
76ad4f0e | 1291 | |
76ad4f0e S |
1292 | netdev_set_tc_queue(netdev, |
1293 | kinfo->tc_info[i].tc, | |
1294 | kinfo->tc_info[i].tqp_count, | |
1295 | kinfo->tc_info[i].tqp_offset); | |
30d240df | 1296 | } |
76ad4f0e S |
1297 | } |
1298 | ||
30d240df YL |
1299 | ret = hns3_nic_set_real_num_queue(netdev); |
1300 | ||
1301 | out: | |
1302 | if (if_running) | |
1303 | hns3_nic_net_open(netdev); | |
1304 | ||
1305 | return ret; | |
76ad4f0e S |
1306 | } |
1307 | ||
2572ac53 | 1308 | static int hns3_nic_setup_tc(struct net_device *dev, enum tc_setup_type type, |
de4784ca | 1309 | void *type_data) |
76ad4f0e | 1310 | { |
575ed7d3 | 1311 | if (type != TC_SETUP_QDISC_MQPRIO) |
38cf0426 | 1312 | return -EOPNOTSUPP; |
76ad4f0e | 1313 | |
30d240df | 1314 | return hns3_setup_tc(dev, type_data); |
76ad4f0e S |
1315 | } |
1316 | ||
1317 | static int hns3_vlan_rx_add_vid(struct net_device *netdev, | |
1318 | __be16 proto, u16 vid) | |
1319 | { | |
9780cb97 | 1320 | struct hnae3_handle *h = hns3_get_handle(netdev); |
681ec399 | 1321 | struct hns3_nic_priv *priv = netdev_priv(netdev); |
76ad4f0e S |
1322 | int ret = -EIO; |
1323 | ||
1324 | if (h->ae_algo->ops->set_vlan_filter) | |
1325 | ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, false); | |
1326 | ||
681ec399 YL |
1327 | if (!ret) |
1328 | set_bit(vid, priv->active_vlans); | |
1329 | ||
76ad4f0e S |
1330 | return ret; |
1331 | } | |
1332 | ||
1333 | static int hns3_vlan_rx_kill_vid(struct net_device *netdev, | |
1334 | __be16 proto, u16 vid) | |
1335 | { | |
9780cb97 | 1336 | struct hnae3_handle *h = hns3_get_handle(netdev); |
681ec399 | 1337 | struct hns3_nic_priv *priv = netdev_priv(netdev); |
76ad4f0e S |
1338 | int ret = -EIO; |
1339 | ||
1340 | if (h->ae_algo->ops->set_vlan_filter) | |
1341 | ret = h->ae_algo->ops->set_vlan_filter(h, proto, vid, true); | |
1342 | ||
681ec399 YL |
1343 | if (!ret) |
1344 | clear_bit(vid, priv->active_vlans); | |
1345 | ||
76ad4f0e S |
1346 | return ret; |
1347 | } | |
1348 | ||
681ec399 YL |
1349 | static void hns3_restore_vlan(struct net_device *netdev) |
1350 | { | |
1351 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
1352 | u16 vid; | |
1353 | int ret; | |
1354 | ||
1355 | for_each_set_bit(vid, priv->active_vlans, VLAN_N_VID) { | |
1356 | ret = hns3_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid); | |
1357 | if (ret) | |
1358 | netdev_warn(netdev, "Restore vlan: %d filter, ret:%d\n", | |
1359 | vid, ret); | |
1360 | } | |
1361 | } | |
1362 | ||
76ad4f0e S |
1363 | static int hns3_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, |
1364 | u8 qos, __be16 vlan_proto) | |
1365 | { | |
9780cb97 | 1366 | struct hnae3_handle *h = hns3_get_handle(netdev); |
76ad4f0e S |
1367 | int ret = -EIO; |
1368 | ||
1369 | if (h->ae_algo->ops->set_vf_vlan_filter) | |
1370 | ret = h->ae_algo->ops->set_vf_vlan_filter(h, vf, vlan, | |
1371 | qos, vlan_proto); | |
1372 | ||
1373 | return ret; | |
1374 | } | |
1375 | ||
a8e8b7ff S |
1376 | static int hns3_nic_change_mtu(struct net_device *netdev, int new_mtu) |
1377 | { | |
9780cb97 | 1378 | struct hnae3_handle *h = hns3_get_handle(netdev); |
a8e8b7ff S |
1379 | bool if_running = netif_running(netdev); |
1380 | int ret; | |
1381 | ||
1382 | if (!h->ae_algo->ops->set_mtu) | |
1383 | return -EOPNOTSUPP; | |
1384 | ||
1385 | /* if this was called with netdev up then bring netdevice down */ | |
1386 | if (if_running) { | |
1387 | (void)hns3_nic_net_stop(netdev); | |
1388 | msleep(100); | |
1389 | } | |
1390 | ||
1391 | ret = h->ae_algo->ops->set_mtu(h, new_mtu); | |
1392 | if (ret) { | |
1393 | netdev_err(netdev, "failed to change MTU in hardware %d\n", | |
1394 | ret); | |
1395 | return ret; | |
1396 | } | |
1397 | ||
5bad95a1 FL |
1398 | netdev->mtu = new_mtu; |
1399 | ||
a8e8b7ff S |
1400 | /* if the netdev was running earlier, bring it up again */ |
1401 | if (if_running && hns3_nic_net_open(netdev)) | |
1402 | ret = -EINVAL; | |
1403 | ||
1404 | return ret; | |
1405 | } | |
1406 | ||
f8fa222c L |
1407 | static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev) |
1408 | { | |
1409 | struct hns3_nic_priv *priv = netdev_priv(ndev); | |
1410 | struct hns3_enet_ring *tx_ring = NULL; | |
1411 | int timeout_queue = 0; | |
1412 | int hw_head, hw_tail; | |
1413 | int i; | |
1414 | ||
1415 | /* Find the stopped queue the same way the stack does */ | |
1416 | for (i = 0; i < ndev->real_num_tx_queues; i++) { | |
1417 | struct netdev_queue *q; | |
1418 | unsigned long trans_start; | |
1419 | ||
1420 | q = netdev_get_tx_queue(ndev, i); | |
1421 | trans_start = q->trans_start; | |
1422 | if (netif_xmit_stopped(q) && | |
1423 | time_after(jiffies, | |
1424 | (trans_start + ndev->watchdog_timeo))) { | |
1425 | timeout_queue = i; | |
1426 | break; | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | if (i == ndev->num_tx_queues) { | |
1431 | netdev_info(ndev, | |
1432 | "no netdev TX timeout queue found, timeout count: %llu\n", | |
1433 | priv->tx_timeout_count); | |
1434 | return false; | |
1435 | } | |
1436 | ||
1437 | tx_ring = priv->ring_data[timeout_queue].ring; | |
1438 | ||
1439 | hw_head = readl_relaxed(tx_ring->tqp->io_base + | |
1440 | HNS3_RING_TX_RING_HEAD_REG); | |
1441 | hw_tail = readl_relaxed(tx_ring->tqp->io_base + | |
1442 | HNS3_RING_TX_RING_TAIL_REG); | |
1443 | netdev_info(ndev, | |
1444 | "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", | |
1445 | priv->tx_timeout_count, | |
1446 | timeout_queue, | |
1447 | tx_ring->next_to_use, | |
1448 | tx_ring->next_to_clean, | |
1449 | hw_head, | |
1450 | hw_tail, | |
1451 | readl(tx_ring->tqp_vector->mask_addr)); | |
1452 | ||
1453 | return true; | |
1454 | } | |
1455 | ||
1456 | static void hns3_nic_net_timeout(struct net_device *ndev) | |
1457 | { | |
1458 | struct hns3_nic_priv *priv = netdev_priv(ndev); | |
f8fa222c L |
1459 | struct hnae3_handle *h = priv->ae_handle; |
1460 | ||
1461 | if (!hns3_get_tx_timeo_queue_info(ndev)) | |
1462 | return; | |
1463 | ||
1464 | priv->tx_timeout_count++; | |
1465 | ||
6d4c3981 | 1466 | if (time_before(jiffies, (h->last_reset_time + ndev->watchdog_timeo))) |
f8fa222c L |
1467 | return; |
1468 | ||
6d4c3981 | 1469 | /* request the reset */ |
f8fa222c | 1470 | if (h->ae_algo->ops->reset_event) |
6d4c3981 | 1471 | h->ae_algo->ops->reset_event(h); |
f8fa222c L |
1472 | } |
1473 | ||
76ad4f0e S |
1474 | static const struct net_device_ops hns3_nic_netdev_ops = { |
1475 | .ndo_open = hns3_nic_net_open, | |
1476 | .ndo_stop = hns3_nic_net_stop, | |
1477 | .ndo_start_xmit = hns3_nic_net_xmit, | |
f8fa222c | 1478 | .ndo_tx_timeout = hns3_nic_net_timeout, |
76ad4f0e | 1479 | .ndo_set_mac_address = hns3_nic_net_set_mac_address, |
a8e8b7ff | 1480 | .ndo_change_mtu = hns3_nic_change_mtu, |
76ad4f0e S |
1481 | .ndo_set_features = hns3_nic_set_features, |
1482 | .ndo_get_stats64 = hns3_nic_get_stats64, | |
1483 | .ndo_setup_tc = hns3_nic_setup_tc, | |
1484 | .ndo_set_rx_mode = hns3_nic_set_rx_mode, | |
76ad4f0e S |
1485 | .ndo_vlan_rx_add_vid = hns3_vlan_rx_add_vid, |
1486 | .ndo_vlan_rx_kill_vid = hns3_vlan_rx_kill_vid, | |
1487 | .ndo_set_vf_vlan = hns3_ndo_set_vf_vlan, | |
1488 | }; | |
1489 | ||
2312e050 FL |
1490 | static bool hns3_is_phys_func(struct pci_dev *pdev) |
1491 | { | |
1492 | u32 dev_id = pdev->device; | |
1493 | ||
1494 | switch (dev_id) { | |
1495 | case HNAE3_DEV_ID_GE: | |
1496 | case HNAE3_DEV_ID_25GE: | |
1497 | case HNAE3_DEV_ID_25GE_RDMA: | |
1498 | case HNAE3_DEV_ID_25GE_RDMA_MACSEC: | |
1499 | case HNAE3_DEV_ID_50GE_RDMA: | |
1500 | case HNAE3_DEV_ID_50GE_RDMA_MACSEC: | |
1501 | case HNAE3_DEV_ID_100G_RDMA_MACSEC: | |
1502 | return true; | |
1503 | case HNAE3_DEV_ID_100G_VF: | |
1504 | case HNAE3_DEV_ID_100G_RDMA_DCB_PFC_VF: | |
1505 | return false; | |
1506 | default: | |
1507 | dev_warn(&pdev->dev, "un-recognized pci device-id %d", | |
1508 | dev_id); | |
1509 | } | |
1510 | ||
1511 | return false; | |
1512 | } | |
1513 | ||
2312e050 FL |
1514 | static void hns3_disable_sriov(struct pci_dev *pdev) |
1515 | { | |
1516 | /* If our VFs are assigned we cannot shut down SR-IOV | |
1517 | * without causing issues, so just leave the hardware | |
1518 | * available but disabled | |
1519 | */ | |
1520 | if (pci_vfs_assigned(pdev)) { | |
1521 | dev_warn(&pdev->dev, | |
1522 | "disabling driver while VFs are assigned\n"); | |
1523 | return; | |
1524 | } | |
1525 | ||
1526 | pci_disable_sriov(pdev); | |
1527 | } | |
1528 | ||
76ad4f0e S |
1529 | /* hns3_probe - Device initialization routine |
1530 | * @pdev: PCI device information struct | |
1531 | * @ent: entry in hns3_pci_tbl | |
1532 | * | |
1533 | * hns3_probe initializes a PF identified by a pci_dev structure. | |
1534 | * The OS initialization, configuring of the PF private structure, | |
1535 | * and a hardware reset occur. | |
1536 | * | |
1537 | * Returns 0 on success, negative on failure | |
1538 | */ | |
1539 | static int hns3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
1540 | { | |
1541 | struct hnae3_ae_dev *ae_dev; | |
1542 | int ret; | |
1543 | ||
1544 | ae_dev = devm_kzalloc(&pdev->dev, sizeof(*ae_dev), | |
1545 | GFP_KERNEL); | |
1546 | if (!ae_dev) { | |
1547 | ret = -ENOMEM; | |
1548 | return ret; | |
1549 | } | |
1550 | ||
1551 | ae_dev->pdev = pdev; | |
e92a0843 | 1552 | ae_dev->flag = ent->driver_data; |
76ad4f0e S |
1553 | ae_dev->dev_type = HNAE3_DEV_KNIC; |
1554 | pci_set_drvdata(pdev, ae_dev); | |
1555 | ||
50fbc237 | 1556 | hnae3_register_ae_dev(ae_dev); |
2312e050 | 1557 | |
2312e050 | 1558 | return 0; |
76ad4f0e S |
1559 | } |
1560 | ||
1561 | /* hns3_remove - Device removal routine | |
1562 | * @pdev: PCI device information struct | |
1563 | */ | |
1564 | static void hns3_remove(struct pci_dev *pdev) | |
1565 | { | |
1566 | struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev); | |
1567 | ||
2312e050 FL |
1568 | if (hns3_is_phys_func(pdev) && IS_ENABLED(CONFIG_PCI_IOV)) |
1569 | hns3_disable_sriov(pdev); | |
1570 | ||
76ad4f0e | 1571 | hnae3_unregister_ae_dev(ae_dev); |
76ad4f0e S |
1572 | } |
1573 | ||
fa8d82e8 PL |
1574 | /** |
1575 | * hns3_pci_sriov_configure | |
1576 | * @pdev: pointer to a pci_dev structure | |
1577 | * @num_vfs: number of VFs to allocate | |
1578 | * | |
1579 | * Enable or change the number of VFs. Called when the user updates the number | |
1580 | * of VFs in sysfs. | |
1581 | **/ | |
1582 | int hns3_pci_sriov_configure(struct pci_dev *pdev, int num_vfs) | |
1583 | { | |
1584 | int ret; | |
1585 | ||
1586 | if (!(hns3_is_phys_func(pdev) && IS_ENABLED(CONFIG_PCI_IOV))) { | |
1587 | dev_warn(&pdev->dev, "Can not config SRIOV\n"); | |
1588 | return -EINVAL; | |
1589 | } | |
1590 | ||
1591 | if (num_vfs) { | |
1592 | ret = pci_enable_sriov(pdev, num_vfs); | |
1593 | if (ret) | |
1594 | dev_err(&pdev->dev, "SRIOV enable failed %d\n", ret); | |
1595 | } else if (!pci_vfs_assigned(pdev)) { | |
1596 | pci_disable_sriov(pdev); | |
1597 | } else { | |
1598 | dev_warn(&pdev->dev, | |
1599 | "Unable to free VFs because some are assigned to VMs.\n"); | |
1600 | } | |
1601 | ||
1602 | return 0; | |
1603 | } | |
1604 | ||
76ad4f0e S |
1605 | static struct pci_driver hns3_driver = { |
1606 | .name = hns3_driver_name, | |
1607 | .id_table = hns3_pci_tbl, | |
1608 | .probe = hns3_probe, | |
1609 | .remove = hns3_remove, | |
fa8d82e8 | 1610 | .sriov_configure = hns3_pci_sriov_configure, |
76ad4f0e S |
1611 | }; |
1612 | ||
1613 | /* set default feature to hns3 */ | |
1614 | static void hns3_set_default_feature(struct net_device *netdev) | |
1615 | { | |
1616 | netdev->priv_flags |= IFF_UNICAST_FLT; | |
1617 | ||
1618 | netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
1619 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | | |
1620 | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | | |
1621 | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | | |
1622 | NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
1623 | ||
1624 | netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID; | |
1625 | ||
1626 | netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM; | |
1627 | ||
1628 | netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
1629 | NETIF_F_HW_VLAN_CTAG_FILTER | | |
052ece6d | 1630 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | |
76ad4f0e S |
1631 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | |
1632 | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | | |
1633 | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | | |
1634 | NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
1635 | ||
1636 | netdev->vlan_features |= | |
1637 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | | |
1638 | NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO | | |
1639 | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | | |
1640 | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | | |
1641 | NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
1642 | ||
1643 | netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
b2641e2a | 1644 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | |
76ad4f0e S |
1645 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | |
1646 | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE | | |
1647 | NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL | | |
1648 | NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
1649 | } | |
1650 | ||
1651 | static int hns3_alloc_buffer(struct hns3_enet_ring *ring, | |
1652 | struct hns3_desc_cb *cb) | |
1653 | { | |
1654 | unsigned int order = hnae_page_order(ring); | |
1655 | struct page *p; | |
1656 | ||
1657 | p = dev_alloc_pages(order); | |
1658 | if (!p) | |
1659 | return -ENOMEM; | |
1660 | ||
1661 | cb->priv = p; | |
1662 | cb->page_offset = 0; | |
1663 | cb->reuse_flag = 0; | |
1664 | cb->buf = page_address(p); | |
1665 | cb->length = hnae_page_size(ring); | |
1666 | cb->type = DESC_TYPE_PAGE; | |
1667 | ||
76ad4f0e S |
1668 | return 0; |
1669 | } | |
1670 | ||
1671 | static void hns3_free_buffer(struct hns3_enet_ring *ring, | |
1672 | struct hns3_desc_cb *cb) | |
1673 | { | |
1674 | if (cb->type == DESC_TYPE_SKB) | |
1675 | dev_kfree_skb_any((struct sk_buff *)cb->priv); | |
1676 | else if (!HNAE3_IS_TX_RING(ring)) | |
1677 | put_page((struct page *)cb->priv); | |
1678 | memset(cb, 0, sizeof(*cb)); | |
1679 | } | |
1680 | ||
1681 | static int hns3_map_buffer(struct hns3_enet_ring *ring, struct hns3_desc_cb *cb) | |
1682 | { | |
1683 | cb->dma = dma_map_page(ring_to_dev(ring), cb->priv, 0, | |
1684 | cb->length, ring_to_dma_dir(ring)); | |
1685 | ||
1686 | if (dma_mapping_error(ring_to_dev(ring), cb->dma)) | |
1687 | return -EIO; | |
1688 | ||
1689 | return 0; | |
1690 | } | |
1691 | ||
1692 | static void hns3_unmap_buffer(struct hns3_enet_ring *ring, | |
1693 | struct hns3_desc_cb *cb) | |
1694 | { | |
1695 | if (cb->type == DESC_TYPE_SKB) | |
1696 | dma_unmap_single(ring_to_dev(ring), cb->dma, cb->length, | |
1697 | ring_to_dma_dir(ring)); | |
1698 | else | |
1699 | dma_unmap_page(ring_to_dev(ring), cb->dma, cb->length, | |
1700 | ring_to_dma_dir(ring)); | |
1701 | } | |
1702 | ||
1703 | static void hns3_buffer_detach(struct hns3_enet_ring *ring, int i) | |
1704 | { | |
1705 | hns3_unmap_buffer(ring, &ring->desc_cb[i]); | |
1706 | ring->desc[i].addr = 0; | |
1707 | } | |
1708 | ||
1709 | static void hns3_free_buffer_detach(struct hns3_enet_ring *ring, int i) | |
1710 | { | |
1711 | struct hns3_desc_cb *cb = &ring->desc_cb[i]; | |
1712 | ||
1713 | if (!ring->desc_cb[i].dma) | |
1714 | return; | |
1715 | ||
1716 | hns3_buffer_detach(ring, i); | |
1717 | hns3_free_buffer(ring, cb); | |
1718 | } | |
1719 | ||
1720 | static void hns3_free_buffers(struct hns3_enet_ring *ring) | |
1721 | { | |
1722 | int i; | |
1723 | ||
1724 | for (i = 0; i < ring->desc_num; i++) | |
1725 | hns3_free_buffer_detach(ring, i); | |
1726 | } | |
1727 | ||
1728 | /* free desc along with its attached buffer */ | |
1729 | static void hns3_free_desc(struct hns3_enet_ring *ring) | |
1730 | { | |
1731 | hns3_free_buffers(ring); | |
1732 | ||
1733 | dma_unmap_single(ring_to_dev(ring), ring->desc_dma_addr, | |
1734 | ring->desc_num * sizeof(ring->desc[0]), | |
1735 | DMA_BIDIRECTIONAL); | |
1736 | ring->desc_dma_addr = 0; | |
1737 | kfree(ring->desc); | |
1738 | ring->desc = NULL; | |
1739 | } | |
1740 | ||
1741 | static int hns3_alloc_desc(struct hns3_enet_ring *ring) | |
1742 | { | |
1743 | int size = ring->desc_num * sizeof(ring->desc[0]); | |
1744 | ||
1745 | ring->desc = kzalloc(size, GFP_KERNEL); | |
1746 | if (!ring->desc) | |
1747 | return -ENOMEM; | |
1748 | ||
1749 | ring->desc_dma_addr = dma_map_single(ring_to_dev(ring), ring->desc, | |
1750 | size, DMA_BIDIRECTIONAL); | |
1751 | if (dma_mapping_error(ring_to_dev(ring), ring->desc_dma_addr)) { | |
1752 | ring->desc_dma_addr = 0; | |
1753 | kfree(ring->desc); | |
1754 | ring->desc = NULL; | |
1755 | return -ENOMEM; | |
1756 | } | |
1757 | ||
1758 | return 0; | |
1759 | } | |
1760 | ||
1761 | static int hns3_reserve_buffer_map(struct hns3_enet_ring *ring, | |
1762 | struct hns3_desc_cb *cb) | |
1763 | { | |
1764 | int ret; | |
1765 | ||
1766 | ret = hns3_alloc_buffer(ring, cb); | |
1767 | if (ret) | |
1768 | goto out; | |
1769 | ||
1770 | ret = hns3_map_buffer(ring, cb); | |
1771 | if (ret) | |
1772 | goto out_with_buf; | |
1773 | ||
1774 | return 0; | |
1775 | ||
1776 | out_with_buf: | |
564883bb | 1777 | hns3_free_buffer(ring, cb); |
76ad4f0e S |
1778 | out: |
1779 | return ret; | |
1780 | } | |
1781 | ||
1782 | static int hns3_alloc_buffer_attach(struct hns3_enet_ring *ring, int i) | |
1783 | { | |
1784 | int ret = hns3_reserve_buffer_map(ring, &ring->desc_cb[i]); | |
1785 | ||
1786 | if (ret) | |
1787 | return ret; | |
1788 | ||
1789 | ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); | |
1790 | ||
1791 | return 0; | |
1792 | } | |
1793 | ||
1794 | /* Allocate memory for raw pkg, and map with dma */ | |
1795 | static int hns3_alloc_ring_buffers(struct hns3_enet_ring *ring) | |
1796 | { | |
1797 | int i, j, ret; | |
1798 | ||
1799 | for (i = 0; i < ring->desc_num; i++) { | |
1800 | ret = hns3_alloc_buffer_attach(ring, i); | |
1801 | if (ret) | |
1802 | goto out_buffer_fail; | |
1803 | } | |
1804 | ||
1805 | return 0; | |
1806 | ||
1807 | out_buffer_fail: | |
1808 | for (j = i - 1; j >= 0; j--) | |
1809 | hns3_free_buffer_detach(ring, j); | |
1810 | return ret; | |
1811 | } | |
1812 | ||
1813 | /* detach a in-used buffer and replace with a reserved one */ | |
1814 | static void hns3_replace_buffer(struct hns3_enet_ring *ring, int i, | |
1815 | struct hns3_desc_cb *res_cb) | |
1816 | { | |
b9077428 | 1817 | hns3_unmap_buffer(ring, &ring->desc_cb[i]); |
76ad4f0e S |
1818 | ring->desc_cb[i] = *res_cb; |
1819 | ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); | |
1820 | } | |
1821 | ||
1822 | static void hns3_reuse_buffer(struct hns3_enet_ring *ring, int i) | |
1823 | { | |
1824 | ring->desc_cb[i].reuse_flag = 0; | |
1825 | ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma | |
1826 | + ring->desc_cb[i].page_offset); | |
1827 | } | |
1828 | ||
1829 | static void hns3_nic_reclaim_one_desc(struct hns3_enet_ring *ring, int *bytes, | |
1830 | int *pkts) | |
1831 | { | |
1832 | struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
1833 | ||
1834 | (*pkts) += (desc_cb->type == DESC_TYPE_SKB); | |
1835 | (*bytes) += desc_cb->length; | |
1836 | /* desc_cb will be cleaned, after hnae_free_buffer_detach*/ | |
1837 | hns3_free_buffer_detach(ring, ring->next_to_clean); | |
1838 | ||
1839 | ring_ptr_move_fw(ring, next_to_clean); | |
1840 | } | |
1841 | ||
1842 | static int is_valid_clean_head(struct hns3_enet_ring *ring, int h) | |
1843 | { | |
1844 | int u = ring->next_to_use; | |
1845 | int c = ring->next_to_clean; | |
1846 | ||
1847 | if (unlikely(h > ring->desc_num)) | |
1848 | return 0; | |
1849 | ||
1850 | return u > c ? (h > c && h <= u) : (h > c || h <= u); | |
1851 | } | |
1852 | ||
24e750c4 | 1853 | bool hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget) |
76ad4f0e S |
1854 | { |
1855 | struct net_device *netdev = ring->tqp->handle->kinfo.netdev; | |
1856 | struct netdev_queue *dev_queue; | |
1857 | int bytes, pkts; | |
1858 | int head; | |
1859 | ||
1860 | head = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_HEAD_REG); | |
1861 | rmb(); /* Make sure head is ready before touch any data */ | |
1862 | ||
1863 | if (is_ring_empty(ring) || head == ring->next_to_clean) | |
24e750c4 | 1864 | return true; /* no data to poll */ |
76ad4f0e S |
1865 | |
1866 | if (!is_valid_clean_head(ring, head)) { | |
1867 | netdev_err(netdev, "wrong head (%d, %d-%d)\n", head, | |
1868 | ring->next_to_use, ring->next_to_clean); | |
1869 | ||
1870 | u64_stats_update_begin(&ring->syncp); | |
1871 | ring->stats.io_err_cnt++; | |
1872 | u64_stats_update_end(&ring->syncp); | |
24e750c4 | 1873 | return true; |
76ad4f0e S |
1874 | } |
1875 | ||
1876 | bytes = 0; | |
1877 | pkts = 0; | |
1878 | while (head != ring->next_to_clean && budget) { | |
1879 | hns3_nic_reclaim_one_desc(ring, &bytes, &pkts); | |
1880 | /* Issue prefetch for next Tx descriptor */ | |
1881 | prefetch(&ring->desc_cb[ring->next_to_clean]); | |
1882 | budget--; | |
1883 | } | |
1884 | ||
1885 | ring->tqp_vector->tx_group.total_bytes += bytes; | |
1886 | ring->tqp_vector->tx_group.total_packets += pkts; | |
1887 | ||
1888 | u64_stats_update_begin(&ring->syncp); | |
1889 | ring->stats.tx_bytes += bytes; | |
1890 | ring->stats.tx_pkts += pkts; | |
1891 | u64_stats_update_end(&ring->syncp); | |
1892 | ||
1893 | dev_queue = netdev_get_tx_queue(netdev, ring->tqp->tqp_index); | |
1894 | netdev_tx_completed_queue(dev_queue, pkts, bytes); | |
1895 | ||
1896 | if (unlikely(pkts && netif_carrier_ok(netdev) && | |
1897 | (ring_space(ring) > HNS3_MAX_BD_PER_PKT))) { | |
1898 | /* Make sure that anybody stopping the queue after this | |
1899 | * sees the new next_to_clean. | |
1900 | */ | |
1901 | smp_mb(); | |
1902 | if (netif_tx_queue_stopped(dev_queue)) { | |
1903 | netif_tx_wake_queue(dev_queue); | |
1904 | ring->stats.restart_queue++; | |
1905 | } | |
1906 | } | |
1907 | ||
1908 | return !!budget; | |
1909 | } | |
1910 | ||
1911 | static int hns3_desc_unused(struct hns3_enet_ring *ring) | |
1912 | { | |
1913 | int ntc = ring->next_to_clean; | |
1914 | int ntu = ring->next_to_use; | |
1915 | ||
1916 | return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu; | |
1917 | } | |
1918 | ||
1919 | static void | |
1920 | hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring, int cleand_count) | |
1921 | { | |
1922 | struct hns3_desc_cb *desc_cb; | |
1923 | struct hns3_desc_cb res_cbs; | |
1924 | int i, ret; | |
1925 | ||
1926 | for (i = 0; i < cleand_count; i++) { | |
1927 | desc_cb = &ring->desc_cb[ring->next_to_use]; | |
1928 | if (desc_cb->reuse_flag) { | |
1929 | u64_stats_update_begin(&ring->syncp); | |
1930 | ring->stats.reuse_pg_cnt++; | |
1931 | u64_stats_update_end(&ring->syncp); | |
1932 | ||
1933 | hns3_reuse_buffer(ring, ring->next_to_use); | |
1934 | } else { | |
1935 | ret = hns3_reserve_buffer_map(ring, &res_cbs); | |
1936 | if (ret) { | |
1937 | u64_stats_update_begin(&ring->syncp); | |
1938 | ring->stats.sw_err_cnt++; | |
1939 | u64_stats_update_end(&ring->syncp); | |
1940 | ||
1941 | netdev_err(ring->tqp->handle->kinfo.netdev, | |
1942 | "hnae reserve buffer map failed.\n"); | |
1943 | break; | |
1944 | } | |
1945 | hns3_replace_buffer(ring, ring->next_to_use, &res_cbs); | |
1946 | } | |
1947 | ||
1948 | ring_ptr_move_fw(ring, next_to_use); | |
1949 | } | |
1950 | ||
1951 | wmb(); /* Make all data has been write before submit */ | |
1952 | writel_relaxed(i, ring->tqp->io_base + HNS3_RING_RX_RING_HEAD_REG); | |
1953 | } | |
1954 | ||
1955 | /* hns3_nic_get_headlen - determine size of header for LRO/GRO | |
1956 | * @data: pointer to the start of the headers | |
1957 | * @max: total length of section to find headers in | |
1958 | * | |
1959 | * This function is meant to determine the length of headers that will | |
1960 | * be recognized by hardware for LRO, GRO, and RSC offloads. The main | |
1961 | * motivation of doing this is to only perform one pull for IPv4 TCP | |
1962 | * packets so that we can do basic things like calculating the gso_size | |
1963 | * based on the average data per packet. | |
1964 | */ | |
1965 | static unsigned int hns3_nic_get_headlen(unsigned char *data, u32 flag, | |
1966 | unsigned int max_size) | |
1967 | { | |
1968 | unsigned char *network; | |
1969 | u8 hlen; | |
1970 | ||
1971 | /* This should never happen, but better safe than sorry */ | |
1972 | if (max_size < ETH_HLEN) | |
1973 | return max_size; | |
1974 | ||
1975 | /* Initialize network frame pointer */ | |
1976 | network = data; | |
1977 | ||
1978 | /* Set first protocol and move network header forward */ | |
1979 | network += ETH_HLEN; | |
1980 | ||
1981 | /* Handle any vlan tag if present */ | |
1982 | if (hnae_get_field(flag, HNS3_RXD_VLAN_M, HNS3_RXD_VLAN_S) | |
1983 | == HNS3_RX_FLAG_VLAN_PRESENT) { | |
1984 | if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN)) | |
1985 | return max_size; | |
1986 | ||
1987 | network += VLAN_HLEN; | |
1988 | } | |
1989 | ||
1990 | /* Handle L3 protocols */ | |
1991 | if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S) | |
1992 | == HNS3_RX_FLAG_L3ID_IPV4) { | |
1993 | if ((typeof(max_size))(network - data) > | |
1994 | (max_size - sizeof(struct iphdr))) | |
1995 | return max_size; | |
1996 | ||
1997 | /* Access ihl as a u8 to avoid unaligned access on ia64 */ | |
1998 | hlen = (network[0] & 0x0F) << 2; | |
1999 | ||
2000 | /* Verify hlen meets minimum size requirements */ | |
2001 | if (hlen < sizeof(struct iphdr)) | |
2002 | return network - data; | |
2003 | ||
2004 | /* Record next protocol if header is present */ | |
2005 | } else if (hnae_get_field(flag, HNS3_RXD_L3ID_M, HNS3_RXD_L3ID_S) | |
2006 | == HNS3_RX_FLAG_L3ID_IPV6) { | |
2007 | if ((typeof(max_size))(network - data) > | |
2008 | (max_size - sizeof(struct ipv6hdr))) | |
2009 | return max_size; | |
2010 | ||
2011 | /* Record next protocol */ | |
2012 | hlen = sizeof(struct ipv6hdr); | |
2013 | } else { | |
2014 | return network - data; | |
2015 | } | |
2016 | ||
2017 | /* Relocate pointer to start of L4 header */ | |
2018 | network += hlen; | |
2019 | ||
2020 | /* Finally sort out TCP/UDP */ | |
2021 | if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S) | |
2022 | == HNS3_RX_FLAG_L4ID_TCP) { | |
2023 | if ((typeof(max_size))(network - data) > | |
2024 | (max_size - sizeof(struct tcphdr))) | |
2025 | return max_size; | |
2026 | ||
2027 | /* Access doff as a u8 to avoid unaligned access on ia64 */ | |
2028 | hlen = (network[12] & 0xF0) >> 2; | |
2029 | ||
2030 | /* Verify hlen meets minimum size requirements */ | |
2031 | if (hlen < sizeof(struct tcphdr)) | |
2032 | return network - data; | |
2033 | ||
2034 | network += hlen; | |
2035 | } else if (hnae_get_field(flag, HNS3_RXD_L4ID_M, HNS3_RXD_L4ID_S) | |
2036 | == HNS3_RX_FLAG_L4ID_UDP) { | |
2037 | if ((typeof(max_size))(network - data) > | |
2038 | (max_size - sizeof(struct udphdr))) | |
2039 | return max_size; | |
2040 | ||
2041 | network += sizeof(struct udphdr); | |
2042 | } | |
2043 | ||
2044 | /* If everything has gone correctly network should be the | |
2045 | * data section of the packet and will be the end of the header. | |
2046 | * If not then it probably represents the end of the last recognized | |
2047 | * header. | |
2048 | */ | |
2049 | if ((typeof(max_size))(network - data) < max_size) | |
2050 | return network - data; | |
2051 | else | |
2052 | return max_size; | |
2053 | } | |
2054 | ||
2055 | static void hns3_nic_reuse_page(struct sk_buff *skb, int i, | |
2056 | struct hns3_enet_ring *ring, int pull_len, | |
2057 | struct hns3_desc_cb *desc_cb) | |
2058 | { | |
2059 | struct hns3_desc *desc; | |
2060 | int truesize, size; | |
2061 | int last_offset; | |
2062 | bool twobufs; | |
2063 | ||
2064 | twobufs = ((PAGE_SIZE < 8192) && | |
2065 | hnae_buf_size(ring) == HNS3_BUFFER_SIZE_2048); | |
2066 | ||
2067 | desc = &ring->desc[ring->next_to_clean]; | |
2068 | size = le16_to_cpu(desc->rx.size); | |
2069 | ||
f8d291f0 PL |
2070 | truesize = hnae_buf_size(ring); |
2071 | ||
2072 | if (!twobufs) | |
76ad4f0e | 2073 | last_offset = hnae_page_size(ring) - hnae_buf_size(ring); |
76ad4f0e S |
2074 | |
2075 | skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len, | |
f8d291f0 | 2076 | size - pull_len, truesize); |
76ad4f0e S |
2077 | |
2078 | /* Avoid re-using remote pages,flag default unreuse */ | |
2079 | if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id())) | |
2080 | return; | |
2081 | ||
2082 | if (twobufs) { | |
2083 | /* If we are only owner of page we can reuse it */ | |
2084 | if (likely(page_count(desc_cb->priv) == 1)) { | |
2085 | /* Flip page offset to other buffer */ | |
2086 | desc_cb->page_offset ^= truesize; | |
2087 | ||
2088 | desc_cb->reuse_flag = 1; | |
2089 | /* bump ref count on page before it is given*/ | |
2090 | get_page(desc_cb->priv); | |
2091 | } | |
2092 | return; | |
2093 | } | |
2094 | ||
2095 | /* Move offset up to the next cache line */ | |
2096 | desc_cb->page_offset += truesize; | |
2097 | ||
2098 | if (desc_cb->page_offset <= last_offset) { | |
2099 | desc_cb->reuse_flag = 1; | |
2100 | /* Bump ref count on page before it is given*/ | |
2101 | get_page(desc_cb->priv); | |
2102 | } | |
2103 | } | |
2104 | ||
2105 | static void hns3_rx_checksum(struct hns3_enet_ring *ring, struct sk_buff *skb, | |
2106 | struct hns3_desc *desc) | |
2107 | { | |
2108 | struct net_device *netdev = ring->tqp->handle->kinfo.netdev; | |
2109 | int l3_type, l4_type; | |
2110 | u32 bd_base_info; | |
2111 | int ol4_type; | |
2112 | u32 l234info; | |
2113 | ||
2114 | bd_base_info = le32_to_cpu(desc->rx.bd_base_info); | |
2115 | l234info = le32_to_cpu(desc->rx.l234_info); | |
2116 | ||
2117 | skb->ip_summed = CHECKSUM_NONE; | |
2118 | ||
2119 | skb_checksum_none_assert(skb); | |
2120 | ||
2121 | if (!(netdev->features & NETIF_F_RXCSUM)) | |
2122 | return; | |
2123 | ||
2124 | /* check if hardware has done checksum */ | |
2125 | if (!hnae_get_bit(bd_base_info, HNS3_RXD_L3L4P_B)) | |
2126 | return; | |
2127 | ||
2128 | if (unlikely(hnae_get_bit(l234info, HNS3_RXD_L3E_B) || | |
2129 | hnae_get_bit(l234info, HNS3_RXD_L4E_B) || | |
2130 | hnae_get_bit(l234info, HNS3_RXD_OL3E_B) || | |
2131 | hnae_get_bit(l234info, HNS3_RXD_OL4E_B))) { | |
2132 | netdev_err(netdev, "L3/L4 error pkt\n"); | |
2133 | u64_stats_update_begin(&ring->syncp); | |
2134 | ring->stats.l3l4_csum_err++; | |
2135 | u64_stats_update_end(&ring->syncp); | |
2136 | ||
2137 | return; | |
2138 | } | |
2139 | ||
2140 | l3_type = hnae_get_field(l234info, HNS3_RXD_L3ID_M, | |
2141 | HNS3_RXD_L3ID_S); | |
2142 | l4_type = hnae_get_field(l234info, HNS3_RXD_L4ID_M, | |
2143 | HNS3_RXD_L4ID_S); | |
2144 | ||
2145 | ol4_type = hnae_get_field(l234info, HNS3_RXD_OL4ID_M, HNS3_RXD_OL4ID_S); | |
2146 | switch (ol4_type) { | |
2147 | case HNS3_OL4_TYPE_MAC_IN_UDP: | |
2148 | case HNS3_OL4_TYPE_NVGRE: | |
2149 | skb->csum_level = 1; | |
2150 | case HNS3_OL4_TYPE_NO_TUN: | |
2151 | /* Can checksum ipv4 or ipv6 + UDP/TCP/SCTP packets */ | |
2152 | if (l3_type == HNS3_L3_TYPE_IPV4 || | |
2153 | (l3_type == HNS3_L3_TYPE_IPV6 && | |
2154 | (l4_type == HNS3_L4_TYPE_UDP || | |
2155 | l4_type == HNS3_L4_TYPE_TCP || | |
2156 | l4_type == HNS3_L4_TYPE_SCTP))) | |
2157 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2158 | break; | |
2159 | } | |
2160 | } | |
2161 | ||
d43e5aca YL |
2162 | static void hns3_rx_skb(struct hns3_enet_ring *ring, struct sk_buff *skb) |
2163 | { | |
2164 | napi_gro_receive(&ring->tqp_vector->napi, skb); | |
2165 | } | |
2166 | ||
76ad4f0e S |
2167 | static int hns3_handle_rx_bd(struct hns3_enet_ring *ring, |
2168 | struct sk_buff **out_skb, int *out_bnum) | |
2169 | { | |
2170 | struct net_device *netdev = ring->tqp->handle->kinfo.netdev; | |
2171 | struct hns3_desc_cb *desc_cb; | |
2172 | struct hns3_desc *desc; | |
2173 | struct sk_buff *skb; | |
2174 | unsigned char *va; | |
2175 | u32 bd_base_info; | |
2176 | int pull_len; | |
2177 | u32 l234info; | |
2178 | int length; | |
2179 | int bnum; | |
2180 | ||
2181 | desc = &ring->desc[ring->next_to_clean]; | |
2182 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
2183 | ||
2184 | prefetch(desc); | |
2185 | ||
2186 | length = le16_to_cpu(desc->rx.pkt_len); | |
2187 | bd_base_info = le32_to_cpu(desc->rx.bd_base_info); | |
2188 | l234info = le32_to_cpu(desc->rx.l234_info); | |
2189 | ||
2190 | /* Check valid BD */ | |
2191 | if (!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B)) | |
2192 | return -EFAULT; | |
2193 | ||
2194 | va = (unsigned char *)desc_cb->buf + desc_cb->page_offset; | |
2195 | ||
2196 | /* Prefetch first cache line of first page | |
2197 | * Idea is to cache few bytes of the header of the packet. Our L1 Cache | |
2198 | * line size is 64B so need to prefetch twice to make it 128B. But in | |
2199 | * actual we can have greater size of caches with 128B Level 1 cache | |
2200 | * lines. In such a case, single fetch would suffice to cache in the | |
2201 | * relevant part of the header. | |
2202 | */ | |
2203 | prefetch(va); | |
2204 | #if L1_CACHE_BYTES < 128 | |
2205 | prefetch(va + L1_CACHE_BYTES); | |
2206 | #endif | |
2207 | ||
2208 | skb = *out_skb = napi_alloc_skb(&ring->tqp_vector->napi, | |
2209 | HNS3_RX_HEAD_SIZE); | |
2210 | if (unlikely(!skb)) { | |
2211 | netdev_err(netdev, "alloc rx skb fail\n"); | |
2212 | ||
2213 | u64_stats_update_begin(&ring->syncp); | |
2214 | ring->stats.sw_err_cnt++; | |
2215 | u64_stats_update_end(&ring->syncp); | |
2216 | ||
2217 | return -ENOMEM; | |
2218 | } | |
2219 | ||
2220 | prefetchw(skb->data); | |
2221 | ||
9699cffe PL |
2222 | /* Based on hw strategy, the tag offloaded will be stored at |
2223 | * ot_vlan_tag in two layer tag case, and stored at vlan_tag | |
2224 | * in one layer tag case. | |
2225 | */ | |
2226 | if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) { | |
2227 | u16 vlan_tag; | |
2228 | ||
2229 | vlan_tag = le16_to_cpu(desc->rx.ot_vlan_tag); | |
2230 | if (!(vlan_tag & VLAN_VID_MASK)) | |
2231 | vlan_tag = le16_to_cpu(desc->rx.vlan_tag); | |
2232 | if (vlan_tag & VLAN_VID_MASK) | |
2233 | __vlan_hwaccel_put_tag(skb, | |
2234 | htons(ETH_P_8021Q), | |
2235 | vlan_tag); | |
2236 | } | |
2237 | ||
76ad4f0e S |
2238 | bnum = 1; |
2239 | if (length <= HNS3_RX_HEAD_SIZE) { | |
2240 | memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long))); | |
2241 | ||
2242 | /* We can reuse buffer as-is, just make sure it is local */ | |
2243 | if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) | |
2244 | desc_cb->reuse_flag = 1; | |
2245 | else /* This page cannot be reused so discard it */ | |
2246 | put_page(desc_cb->priv); | |
2247 | ||
2248 | ring_ptr_move_fw(ring, next_to_clean); | |
2249 | } else { | |
2250 | u64_stats_update_begin(&ring->syncp); | |
2251 | ring->stats.seg_pkt_cnt++; | |
2252 | u64_stats_update_end(&ring->syncp); | |
2253 | ||
2254 | pull_len = hns3_nic_get_headlen(va, l234info, | |
2255 | HNS3_RX_HEAD_SIZE); | |
2256 | memcpy(__skb_put(skb, pull_len), va, | |
2257 | ALIGN(pull_len, sizeof(long))); | |
2258 | ||
2259 | hns3_nic_reuse_page(skb, 0, ring, pull_len, desc_cb); | |
2260 | ring_ptr_move_fw(ring, next_to_clean); | |
2261 | ||
2262 | while (!hnae_get_bit(bd_base_info, HNS3_RXD_FE_B)) { | |
2263 | desc = &ring->desc[ring->next_to_clean]; | |
2264 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
2265 | bd_base_info = le32_to_cpu(desc->rx.bd_base_info); | |
2266 | hns3_nic_reuse_page(skb, bnum, ring, 0, desc_cb); | |
2267 | ring_ptr_move_fw(ring, next_to_clean); | |
2268 | bnum++; | |
2269 | } | |
2270 | } | |
2271 | ||
2272 | *out_bnum = bnum; | |
2273 | ||
2274 | if (unlikely(!hnae_get_bit(bd_base_info, HNS3_RXD_VLD_B))) { | |
2275 | netdev_err(netdev, "no valid bd,%016llx,%016llx\n", | |
2276 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
2277 | u64_stats_update_begin(&ring->syncp); | |
2278 | ring->stats.non_vld_descs++; | |
2279 | u64_stats_update_end(&ring->syncp); | |
2280 | ||
2281 | dev_kfree_skb_any(skb); | |
2282 | return -EINVAL; | |
2283 | } | |
2284 | ||
2285 | if (unlikely((!desc->rx.pkt_len) || | |
2286 | hnae_get_bit(l234info, HNS3_RXD_TRUNCAT_B))) { | |
2287 | netdev_err(netdev, "truncated pkt\n"); | |
2288 | u64_stats_update_begin(&ring->syncp); | |
2289 | ring->stats.err_pkt_len++; | |
2290 | u64_stats_update_end(&ring->syncp); | |
2291 | ||
2292 | dev_kfree_skb_any(skb); | |
2293 | return -EFAULT; | |
2294 | } | |
2295 | ||
2296 | if (unlikely(hnae_get_bit(l234info, HNS3_RXD_L2E_B))) { | |
2297 | netdev_err(netdev, "L2 error pkt\n"); | |
2298 | u64_stats_update_begin(&ring->syncp); | |
2299 | ring->stats.l2_err++; | |
2300 | u64_stats_update_end(&ring->syncp); | |
2301 | ||
2302 | dev_kfree_skb_any(skb); | |
2303 | return -EFAULT; | |
2304 | } | |
2305 | ||
2306 | u64_stats_update_begin(&ring->syncp); | |
2307 | ring->stats.rx_pkts++; | |
2308 | ring->stats.rx_bytes += skb->len; | |
2309 | u64_stats_update_end(&ring->syncp); | |
2310 | ||
2311 | ring->tqp_vector->rx_group.total_bytes += skb->len; | |
2312 | ||
2313 | hns3_rx_checksum(ring, skb, desc); | |
2314 | return 0; | |
2315 | } | |
2316 | ||
d43e5aca YL |
2317 | int hns3_clean_rx_ring( |
2318 | struct hns3_enet_ring *ring, int budget, | |
2319 | void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *)) | |
76ad4f0e S |
2320 | { |
2321 | #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16 | |
2322 | struct net_device *netdev = ring->tqp->handle->kinfo.netdev; | |
2323 | int recv_pkts, recv_bds, clean_count, err; | |
2324 | int unused_count = hns3_desc_unused(ring); | |
2325 | struct sk_buff *skb = NULL; | |
2326 | int num, bnum = 0; | |
2327 | ||
2328 | num = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_FBDNUM_REG); | |
2329 | rmb(); /* Make sure num taken effect before the other data is touched */ | |
2330 | ||
2331 | recv_pkts = 0, recv_bds = 0, clean_count = 0; | |
2332 | num -= unused_count; | |
2333 | ||
2334 | while (recv_pkts < budget && recv_bds < num) { | |
2335 | /* Reuse or realloc buffers */ | |
2336 | if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) { | |
2337 | hns3_nic_alloc_rx_buffers(ring, | |
2338 | clean_count + unused_count); | |
2339 | clean_count = 0; | |
2340 | unused_count = hns3_desc_unused(ring); | |
2341 | } | |
2342 | ||
2343 | /* Poll one pkt */ | |
2344 | err = hns3_handle_rx_bd(ring, &skb, &bnum); | |
2345 | if (unlikely(!skb)) /* This fault cannot be repaired */ | |
2346 | goto out; | |
2347 | ||
2348 | recv_bds += bnum; | |
2349 | clean_count += bnum; | |
2350 | if (unlikely(err)) { /* Do jump the err */ | |
2351 | recv_pkts++; | |
2352 | continue; | |
2353 | } | |
2354 | ||
2355 | /* Do update ip stack process */ | |
2356 | skb->protocol = eth_type_trans(skb, netdev); | |
d43e5aca | 2357 | rx_fn(ring, skb); |
76ad4f0e S |
2358 | |
2359 | recv_pkts++; | |
2360 | } | |
2361 | ||
2362 | out: | |
2363 | /* Make all data has been write before submit */ | |
2364 | if (clean_count + unused_count > 0) | |
2365 | hns3_nic_alloc_rx_buffers(ring, | |
2366 | clean_count + unused_count); | |
2367 | ||
2368 | return recv_pkts; | |
2369 | } | |
2370 | ||
2371 | static bool hns3_get_new_int_gl(struct hns3_enet_ring_group *ring_group) | |
2372 | { | |
a95e1f86 FL |
2373 | struct hns3_enet_tqp_vector *tqp_vector = |
2374 | ring_group->ring->tqp_vector; | |
76ad4f0e | 2375 | enum hns3_flow_level_range new_flow_level; |
a95e1f86 FL |
2376 | int packets_per_msecs; |
2377 | int bytes_per_msecs; | |
2378 | u32 time_passed_ms; | |
76ad4f0e | 2379 | u16 new_int_gl; |
76ad4f0e | 2380 | |
a95e1f86 | 2381 | if (!ring_group->coal.int_gl || !tqp_vector->last_jiffies) |
76ad4f0e S |
2382 | return false; |
2383 | ||
2384 | if (ring_group->total_packets == 0) { | |
9bc727a9 YL |
2385 | ring_group->coal.int_gl = HNS3_INT_GL_50K; |
2386 | ring_group->coal.flow_level = HNS3_FLOW_LOW; | |
76ad4f0e S |
2387 | return true; |
2388 | } | |
2389 | ||
2390 | /* Simple throttlerate management | |
2391 | * 0-10MB/s lower (50000 ints/s) | |
2392 | * 10-20MB/s middle (20000 ints/s) | |
2393 | * 20-1249MB/s high (18000 ints/s) | |
2394 | * > 40000pps ultra (8000 ints/s) | |
2395 | */ | |
9bc727a9 YL |
2396 | new_flow_level = ring_group->coal.flow_level; |
2397 | new_int_gl = ring_group->coal.int_gl; | |
a95e1f86 FL |
2398 | time_passed_ms = |
2399 | jiffies_to_msecs(jiffies - tqp_vector->last_jiffies); | |
2400 | ||
2401 | if (!time_passed_ms) | |
2402 | return false; | |
2403 | ||
2404 | do_div(ring_group->total_packets, time_passed_ms); | |
2405 | packets_per_msecs = ring_group->total_packets; | |
2406 | ||
2407 | do_div(ring_group->total_bytes, time_passed_ms); | |
2408 | bytes_per_msecs = ring_group->total_bytes; | |
2409 | ||
2410 | #define HNS3_RX_LOW_BYTE_RATE 10000 | |
2411 | #define HNS3_RX_MID_BYTE_RATE 20000 | |
76ad4f0e S |
2412 | |
2413 | switch (new_flow_level) { | |
2414 | case HNS3_FLOW_LOW: | |
a95e1f86 | 2415 | if (bytes_per_msecs > HNS3_RX_LOW_BYTE_RATE) |
76ad4f0e S |
2416 | new_flow_level = HNS3_FLOW_MID; |
2417 | break; | |
2418 | case HNS3_FLOW_MID: | |
a95e1f86 | 2419 | if (bytes_per_msecs > HNS3_RX_MID_BYTE_RATE) |
76ad4f0e | 2420 | new_flow_level = HNS3_FLOW_HIGH; |
a95e1f86 | 2421 | else if (bytes_per_msecs <= HNS3_RX_LOW_BYTE_RATE) |
76ad4f0e S |
2422 | new_flow_level = HNS3_FLOW_LOW; |
2423 | break; | |
2424 | case HNS3_FLOW_HIGH: | |
2425 | case HNS3_FLOW_ULTRA: | |
2426 | default: | |
a95e1f86 | 2427 | if (bytes_per_msecs <= HNS3_RX_MID_BYTE_RATE) |
76ad4f0e S |
2428 | new_flow_level = HNS3_FLOW_MID; |
2429 | break; | |
2430 | } | |
2431 | ||
a95e1f86 FL |
2432 | #define HNS3_RX_ULTRA_PACKET_RATE 40 |
2433 | ||
2434 | if (packets_per_msecs > HNS3_RX_ULTRA_PACKET_RATE && | |
2435 | &tqp_vector->rx_group == ring_group) | |
76ad4f0e S |
2436 | new_flow_level = HNS3_FLOW_ULTRA; |
2437 | ||
2438 | switch (new_flow_level) { | |
2439 | case HNS3_FLOW_LOW: | |
2440 | new_int_gl = HNS3_INT_GL_50K; | |
2441 | break; | |
2442 | case HNS3_FLOW_MID: | |
2443 | new_int_gl = HNS3_INT_GL_20K; | |
2444 | break; | |
2445 | case HNS3_FLOW_HIGH: | |
2446 | new_int_gl = HNS3_INT_GL_18K; | |
2447 | break; | |
2448 | case HNS3_FLOW_ULTRA: | |
2449 | new_int_gl = HNS3_INT_GL_8K; | |
2450 | break; | |
2451 | default: | |
2452 | break; | |
2453 | } | |
2454 | ||
2455 | ring_group->total_bytes = 0; | |
2456 | ring_group->total_packets = 0; | |
9bc727a9 YL |
2457 | ring_group->coal.flow_level = new_flow_level; |
2458 | if (new_int_gl != ring_group->coal.int_gl) { | |
2459 | ring_group->coal.int_gl = new_int_gl; | |
76ad4f0e S |
2460 | return true; |
2461 | } | |
2462 | return false; | |
2463 | } | |
2464 | ||
2465 | static void hns3_update_new_int_gl(struct hns3_enet_tqp_vector *tqp_vector) | |
2466 | { | |
8b1ff1ea FL |
2467 | struct hns3_enet_ring_group *rx_group = &tqp_vector->rx_group; |
2468 | struct hns3_enet_ring_group *tx_group = &tqp_vector->tx_group; | |
2469 | bool rx_update, tx_update; | |
2470 | ||
cd9d187b FL |
2471 | if (tqp_vector->int_adapt_down > 0) { |
2472 | tqp_vector->int_adapt_down--; | |
2473 | return; | |
2474 | } | |
2475 | ||
9bc727a9 | 2476 | if (rx_group->coal.gl_adapt_enable) { |
8b1ff1ea FL |
2477 | rx_update = hns3_get_new_int_gl(rx_group); |
2478 | if (rx_update) | |
2479 | hns3_set_vector_coalesce_rx_gl(tqp_vector, | |
9bc727a9 | 2480 | rx_group->coal.int_gl); |
8b1ff1ea FL |
2481 | } |
2482 | ||
9bc727a9 | 2483 | if (tx_group->coal.gl_adapt_enable) { |
8b1ff1ea FL |
2484 | tx_update = hns3_get_new_int_gl(&tqp_vector->tx_group); |
2485 | if (tx_update) | |
2486 | hns3_set_vector_coalesce_tx_gl(tqp_vector, | |
9bc727a9 | 2487 | tx_group->coal.int_gl); |
76ad4f0e | 2488 | } |
cd9d187b | 2489 | |
a95e1f86 | 2490 | tqp_vector->last_jiffies = jiffies; |
cd9d187b | 2491 | tqp_vector->int_adapt_down = HNS3_INT_ADAPT_DOWN_START; |
76ad4f0e S |
2492 | } |
2493 | ||
2494 | static int hns3_nic_common_poll(struct napi_struct *napi, int budget) | |
2495 | { | |
2496 | struct hns3_enet_ring *ring; | |
2497 | int rx_pkt_total = 0; | |
2498 | ||
2499 | struct hns3_enet_tqp_vector *tqp_vector = | |
2500 | container_of(napi, struct hns3_enet_tqp_vector, napi); | |
2501 | bool clean_complete = true; | |
2502 | int rx_budget; | |
2503 | ||
2504 | /* Since the actual Tx work is minimal, we can give the Tx a larger | |
2505 | * budget and be more aggressive about cleaning up the Tx descriptors. | |
2506 | */ | |
2507 | hns3_for_each_ring(ring, tqp_vector->tx_group) { | |
2508 | if (!hns3_clean_tx_ring(ring, budget)) | |
2509 | clean_complete = false; | |
2510 | } | |
2511 | ||
2512 | /* make sure rx ring budget not smaller than 1 */ | |
2513 | rx_budget = max(budget / tqp_vector->num_tqps, 1); | |
2514 | ||
2515 | hns3_for_each_ring(ring, tqp_vector->rx_group) { | |
d43e5aca YL |
2516 | int rx_cleaned = hns3_clean_rx_ring(ring, rx_budget, |
2517 | hns3_rx_skb); | |
76ad4f0e S |
2518 | |
2519 | if (rx_cleaned >= rx_budget) | |
2520 | clean_complete = false; | |
2521 | ||
2522 | rx_pkt_total += rx_cleaned; | |
2523 | } | |
2524 | ||
2525 | tqp_vector->rx_group.total_packets += rx_pkt_total; | |
2526 | ||
2527 | if (!clean_complete) | |
2528 | return budget; | |
2529 | ||
2530 | napi_complete(napi); | |
2531 | hns3_update_new_int_gl(tqp_vector); | |
2532 | hns3_mask_vector_irq(tqp_vector, 1); | |
2533 | ||
2534 | return rx_pkt_total; | |
2535 | } | |
2536 | ||
2537 | static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, | |
2538 | struct hnae3_ring_chain_node *head) | |
2539 | { | |
2540 | struct pci_dev *pdev = tqp_vector->handle->pdev; | |
2541 | struct hnae3_ring_chain_node *cur_chain = head; | |
2542 | struct hnae3_ring_chain_node *chain; | |
2543 | struct hns3_enet_ring *tx_ring; | |
2544 | struct hns3_enet_ring *rx_ring; | |
2545 | ||
2546 | tx_ring = tqp_vector->tx_group.ring; | |
2547 | if (tx_ring) { | |
2548 | cur_chain->tqp_index = tx_ring->tqp->tqp_index; | |
2549 | hnae_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B, | |
2550 | HNAE3_RING_TYPE_TX); | |
11af96a4 FL |
2551 | hnae_set_field(cur_chain->int_gl_idx, HNAE3_RING_GL_IDX_M, |
2552 | HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_TX); | |
76ad4f0e S |
2553 | |
2554 | cur_chain->next = NULL; | |
2555 | ||
2556 | while (tx_ring->next) { | |
2557 | tx_ring = tx_ring->next; | |
2558 | ||
2559 | chain = devm_kzalloc(&pdev->dev, sizeof(*chain), | |
2560 | GFP_KERNEL); | |
2561 | if (!chain) | |
2562 | return -ENOMEM; | |
2563 | ||
2564 | cur_chain->next = chain; | |
2565 | chain->tqp_index = tx_ring->tqp->tqp_index; | |
2566 | hnae_set_bit(chain->flag, HNAE3_RING_TYPE_B, | |
2567 | HNAE3_RING_TYPE_TX); | |
11af96a4 FL |
2568 | hnae_set_field(chain->int_gl_idx, |
2569 | HNAE3_RING_GL_IDX_M, | |
2570 | HNAE3_RING_GL_IDX_S, | |
2571 | HNAE3_RING_GL_TX); | |
76ad4f0e S |
2572 | |
2573 | cur_chain = chain; | |
2574 | } | |
2575 | } | |
2576 | ||
2577 | rx_ring = tqp_vector->rx_group.ring; | |
2578 | if (!tx_ring && rx_ring) { | |
2579 | cur_chain->next = NULL; | |
2580 | cur_chain->tqp_index = rx_ring->tqp->tqp_index; | |
2581 | hnae_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B, | |
2582 | HNAE3_RING_TYPE_RX); | |
11af96a4 FL |
2583 | hnae_set_field(cur_chain->int_gl_idx, HNAE3_RING_GL_IDX_M, |
2584 | HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_RX); | |
76ad4f0e S |
2585 | |
2586 | rx_ring = rx_ring->next; | |
2587 | } | |
2588 | ||
2589 | while (rx_ring) { | |
2590 | chain = devm_kzalloc(&pdev->dev, sizeof(*chain), GFP_KERNEL); | |
2591 | if (!chain) | |
2592 | return -ENOMEM; | |
2593 | ||
2594 | cur_chain->next = chain; | |
2595 | chain->tqp_index = rx_ring->tqp->tqp_index; | |
2596 | hnae_set_bit(chain->flag, HNAE3_RING_TYPE_B, | |
2597 | HNAE3_RING_TYPE_RX); | |
11af96a4 FL |
2598 | hnae_set_field(chain->int_gl_idx, HNAE3_RING_GL_IDX_M, |
2599 | HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_RX); | |
2600 | ||
76ad4f0e S |
2601 | cur_chain = chain; |
2602 | ||
2603 | rx_ring = rx_ring->next; | |
2604 | } | |
2605 | ||
2606 | return 0; | |
2607 | } | |
2608 | ||
2609 | static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, | |
2610 | struct hnae3_ring_chain_node *head) | |
2611 | { | |
2612 | struct pci_dev *pdev = tqp_vector->handle->pdev; | |
2613 | struct hnae3_ring_chain_node *chain_tmp, *chain; | |
2614 | ||
2615 | chain = head->next; | |
2616 | ||
2617 | while (chain) { | |
2618 | chain_tmp = chain->next; | |
2619 | devm_kfree(&pdev->dev, chain); | |
2620 | chain = chain_tmp; | |
2621 | } | |
2622 | } | |
2623 | ||
2624 | static void hns3_add_ring_to_group(struct hns3_enet_ring_group *group, | |
2625 | struct hns3_enet_ring *ring) | |
2626 | { | |
2627 | ring->next = group->ring; | |
2628 | group->ring = ring; | |
2629 | ||
2630 | group->count++; | |
2631 | } | |
2632 | ||
2633 | static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv) | |
2634 | { | |
2635 | struct hnae3_ring_chain_node vector_ring_chain; | |
2636 | struct hnae3_handle *h = priv->ae_handle; | |
2637 | struct hns3_enet_tqp_vector *tqp_vector; | |
76ad4f0e S |
2638 | int ret = 0; |
2639 | u16 i; | |
2640 | ||
dd38c726 YL |
2641 | for (i = 0; i < priv->vector_num; i++) { |
2642 | tqp_vector = &priv->tqp_vector[i]; | |
2643 | hns3_vector_gl_rl_init_hw(tqp_vector, priv); | |
2644 | tqp_vector->num_tqps = 0; | |
2645 | } | |
76ad4f0e | 2646 | |
dd38c726 YL |
2647 | for (i = 0; i < h->kinfo.num_tqps; i++) { |
2648 | u16 vector_i = i % priv->vector_num; | |
2649 | u16 tqp_num = h->kinfo.num_tqps; | |
76ad4f0e S |
2650 | |
2651 | tqp_vector = &priv->tqp_vector[vector_i]; | |
2652 | ||
2653 | hns3_add_ring_to_group(&tqp_vector->tx_group, | |
2654 | priv->ring_data[i].ring); | |
2655 | ||
2656 | hns3_add_ring_to_group(&tqp_vector->rx_group, | |
2657 | priv->ring_data[i + tqp_num].ring); | |
2658 | ||
76ad4f0e S |
2659 | priv->ring_data[i].ring->tqp_vector = tqp_vector; |
2660 | priv->ring_data[i + tqp_num].ring->tqp_vector = tqp_vector; | |
dd38c726 | 2661 | tqp_vector->num_tqps++; |
76ad4f0e S |
2662 | } |
2663 | ||
dd38c726 | 2664 | for (i = 0; i < priv->vector_num; i++) { |
76ad4f0e S |
2665 | tqp_vector = &priv->tqp_vector[i]; |
2666 | ||
2667 | tqp_vector->rx_group.total_bytes = 0; | |
2668 | tqp_vector->rx_group.total_packets = 0; | |
2669 | tqp_vector->tx_group.total_bytes = 0; | |
2670 | tqp_vector->tx_group.total_packets = 0; | |
76ad4f0e S |
2671 | tqp_vector->handle = h; |
2672 | ||
2673 | ret = hns3_get_vector_ring_chain(tqp_vector, | |
2674 | &vector_ring_chain); | |
2675 | if (ret) | |
dd38c726 | 2676 | return ret; |
76ad4f0e S |
2677 | |
2678 | ret = h->ae_algo->ops->map_ring_to_vector(h, | |
2679 | tqp_vector->vector_irq, &vector_ring_chain); | |
76ad4f0e S |
2680 | |
2681 | hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain); | |
2682 | ||
dd38c726 YL |
2683 | if (ret) |
2684 | return ret; | |
2685 | ||
76ad4f0e S |
2686 | netif_napi_add(priv->netdev, &tqp_vector->napi, |
2687 | hns3_nic_common_poll, NAPI_POLL_WEIGHT); | |
2688 | } | |
2689 | ||
dd38c726 YL |
2690 | return 0; |
2691 | } | |
2692 | ||
2693 | static int hns3_nic_alloc_vector_data(struct hns3_nic_priv *priv) | |
2694 | { | |
2695 | struct hnae3_handle *h = priv->ae_handle; | |
2696 | struct hns3_enet_tqp_vector *tqp_vector; | |
2697 | struct hnae3_vector_info *vector; | |
2698 | struct pci_dev *pdev = h->pdev; | |
2699 | u16 tqp_num = h->kinfo.num_tqps; | |
2700 | u16 vector_num; | |
2701 | int ret = 0; | |
2702 | u16 i; | |
2703 | ||
2704 | /* RSS size, cpu online and vector_num should be the same */ | |
2705 | /* Should consider 2p/4p later */ | |
2706 | vector_num = min_t(u16, num_online_cpus(), tqp_num); | |
2707 | vector = devm_kcalloc(&pdev->dev, vector_num, sizeof(*vector), | |
2708 | GFP_KERNEL); | |
2709 | if (!vector) | |
2710 | return -ENOMEM; | |
2711 | ||
2712 | vector_num = h->ae_algo->ops->get_vector(h, vector_num, vector); | |
2713 | ||
2714 | priv->vector_num = vector_num; | |
2715 | priv->tqp_vector = (struct hns3_enet_tqp_vector *) | |
2716 | devm_kcalloc(&pdev->dev, vector_num, sizeof(*priv->tqp_vector), | |
2717 | GFP_KERNEL); | |
2718 | if (!priv->tqp_vector) { | |
2719 | ret = -ENOMEM; | |
2720 | goto out; | |
2721 | } | |
2722 | ||
2723 | for (i = 0; i < priv->vector_num; i++) { | |
2724 | tqp_vector = &priv->tqp_vector[i]; | |
2725 | tqp_vector->idx = i; | |
2726 | tqp_vector->mask_addr = vector[i].io_addr; | |
2727 | tqp_vector->vector_irq = vector[i].vector; | |
2728 | hns3_vector_gl_rl_init(tqp_vector, priv); | |
2729 | } | |
2730 | ||
76ad4f0e S |
2731 | out: |
2732 | devm_kfree(&pdev->dev, vector); | |
2733 | return ret; | |
2734 | } | |
2735 | ||
dd38c726 YL |
2736 | static void hns3_clear_ring_group(struct hns3_enet_ring_group *group) |
2737 | { | |
2738 | group->ring = NULL; | |
2739 | group->count = 0; | |
2740 | } | |
2741 | ||
76ad4f0e S |
2742 | static int hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv) |
2743 | { | |
2744 | struct hnae3_ring_chain_node vector_ring_chain; | |
2745 | struct hnae3_handle *h = priv->ae_handle; | |
2746 | struct hns3_enet_tqp_vector *tqp_vector; | |
76ad4f0e S |
2747 | int i, ret; |
2748 | ||
2749 | for (i = 0; i < priv->vector_num; i++) { | |
2750 | tqp_vector = &priv->tqp_vector[i]; | |
2751 | ||
2752 | ret = hns3_get_vector_ring_chain(tqp_vector, | |
2753 | &vector_ring_chain); | |
2754 | if (ret) | |
2755 | return ret; | |
2756 | ||
2757 | ret = h->ae_algo->ops->unmap_ring_from_vector(h, | |
2758 | tqp_vector->vector_irq, &vector_ring_chain); | |
2759 | if (ret) | |
2760 | return ret; | |
2761 | ||
0d3e6631 YL |
2762 | ret = h->ae_algo->ops->put_vector(h, tqp_vector->vector_irq); |
2763 | if (ret) | |
2764 | return ret; | |
2765 | ||
76ad4f0e S |
2766 | hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain); |
2767 | ||
2768 | if (priv->tqp_vector[i].irq_init_flag == HNS3_VECTOR_INITED) { | |
2769 | (void)irq_set_affinity_hint( | |
2770 | priv->tqp_vector[i].vector_irq, | |
2771 | NULL); | |
ae064e61 | 2772 | free_irq(priv->tqp_vector[i].vector_irq, |
2773 | &priv->tqp_vector[i]); | |
76ad4f0e S |
2774 | } |
2775 | ||
2776 | priv->ring_data[i].ring->irq_init_flag = HNS3_VECTOR_NOT_INITED; | |
dd38c726 YL |
2777 | hns3_clear_ring_group(&tqp_vector->rx_group); |
2778 | hns3_clear_ring_group(&tqp_vector->tx_group); | |
76ad4f0e S |
2779 | netif_napi_del(&priv->tqp_vector[i].napi); |
2780 | } | |
2781 | ||
dd38c726 YL |
2782 | return 0; |
2783 | } | |
2784 | ||
2785 | static int hns3_nic_dealloc_vector_data(struct hns3_nic_priv *priv) | |
2786 | { | |
2787 | struct hnae3_handle *h = priv->ae_handle; | |
2788 | struct pci_dev *pdev = h->pdev; | |
2789 | int i, ret; | |
2790 | ||
2791 | for (i = 0; i < priv->vector_num; i++) { | |
2792 | struct hns3_enet_tqp_vector *tqp_vector; | |
2793 | ||
2794 | tqp_vector = &priv->tqp_vector[i]; | |
2795 | ret = h->ae_algo->ops->put_vector(h, tqp_vector->vector_irq); | |
2796 | if (ret) | |
2797 | return ret; | |
2798 | } | |
76ad4f0e | 2799 | |
dd38c726 | 2800 | devm_kfree(&pdev->dev, priv->tqp_vector); |
76ad4f0e S |
2801 | return 0; |
2802 | } | |
2803 | ||
2804 | static int hns3_ring_get_cfg(struct hnae3_queue *q, struct hns3_nic_priv *priv, | |
2805 | int ring_type) | |
2806 | { | |
2807 | struct hns3_nic_ring_data *ring_data = priv->ring_data; | |
2808 | int queue_num = priv->ae_handle->kinfo.num_tqps; | |
2809 | struct pci_dev *pdev = priv->ae_handle->pdev; | |
2810 | struct hns3_enet_ring *ring; | |
2811 | ||
2812 | ring = devm_kzalloc(&pdev->dev, sizeof(*ring), GFP_KERNEL); | |
2813 | if (!ring) | |
2814 | return -ENOMEM; | |
2815 | ||
2816 | if (ring_type == HNAE3_RING_TYPE_TX) { | |
2817 | ring_data[q->tqp_index].ring = ring; | |
66b44730 | 2818 | ring_data[q->tqp_index].queue_index = q->tqp_index; |
76ad4f0e S |
2819 | ring->io_base = (u8 __iomem *)q->io_base + HNS3_TX_REG_OFFSET; |
2820 | } else { | |
2821 | ring_data[q->tqp_index + queue_num].ring = ring; | |
66b44730 | 2822 | ring_data[q->tqp_index + queue_num].queue_index = q->tqp_index; |
76ad4f0e S |
2823 | ring->io_base = q->io_base; |
2824 | } | |
2825 | ||
2826 | hnae_set_bit(ring->flag, HNAE3_RING_TYPE_B, ring_type); | |
2827 | ||
76ad4f0e S |
2828 | ring->tqp = q; |
2829 | ring->desc = NULL; | |
2830 | ring->desc_cb = NULL; | |
2831 | ring->dev = priv->dev; | |
2832 | ring->desc_dma_addr = 0; | |
2833 | ring->buf_size = q->buf_size; | |
2834 | ring->desc_num = q->desc_num; | |
2835 | ring->next_to_use = 0; | |
2836 | ring->next_to_clean = 0; | |
2837 | ||
2838 | return 0; | |
2839 | } | |
2840 | ||
2841 | static int hns3_queue_to_ring(struct hnae3_queue *tqp, | |
2842 | struct hns3_nic_priv *priv) | |
2843 | { | |
2844 | int ret; | |
2845 | ||
2846 | ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_TX); | |
2847 | if (ret) | |
2848 | return ret; | |
2849 | ||
2850 | ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_RX); | |
2851 | if (ret) | |
2852 | return ret; | |
2853 | ||
2854 | return 0; | |
2855 | } | |
2856 | ||
2857 | static int hns3_get_ring_config(struct hns3_nic_priv *priv) | |
2858 | { | |
2859 | struct hnae3_handle *h = priv->ae_handle; | |
2860 | struct pci_dev *pdev = h->pdev; | |
2861 | int i, ret; | |
2862 | ||
2863 | priv->ring_data = devm_kzalloc(&pdev->dev, h->kinfo.num_tqps * | |
2864 | sizeof(*priv->ring_data) * 2, | |
2865 | GFP_KERNEL); | |
2866 | if (!priv->ring_data) | |
2867 | return -ENOMEM; | |
2868 | ||
2869 | for (i = 0; i < h->kinfo.num_tqps; i++) { | |
2870 | ret = hns3_queue_to_ring(h->kinfo.tqp[i], priv); | |
2871 | if (ret) | |
2872 | goto err; | |
2873 | } | |
2874 | ||
2875 | return 0; | |
2876 | err: | |
2877 | devm_kfree(&pdev->dev, priv->ring_data); | |
2878 | return ret; | |
2879 | } | |
2880 | ||
09f2af64 PL |
2881 | static void hns3_put_ring_config(struct hns3_nic_priv *priv) |
2882 | { | |
2883 | struct hnae3_handle *h = priv->ae_handle; | |
2884 | int i; | |
2885 | ||
2886 | for (i = 0; i < h->kinfo.num_tqps; i++) { | |
2887 | devm_kfree(priv->dev, priv->ring_data[i].ring); | |
2888 | devm_kfree(priv->dev, | |
2889 | priv->ring_data[i + h->kinfo.num_tqps].ring); | |
2890 | } | |
2891 | devm_kfree(priv->dev, priv->ring_data); | |
2892 | } | |
2893 | ||
76ad4f0e S |
2894 | static int hns3_alloc_ring_memory(struct hns3_enet_ring *ring) |
2895 | { | |
2896 | int ret; | |
2897 | ||
2898 | if (ring->desc_num <= 0 || ring->buf_size <= 0) | |
2899 | return -EINVAL; | |
2900 | ||
2901 | ring->desc_cb = kcalloc(ring->desc_num, sizeof(ring->desc_cb[0]), | |
2902 | GFP_KERNEL); | |
2903 | if (!ring->desc_cb) { | |
2904 | ret = -ENOMEM; | |
2905 | goto out; | |
2906 | } | |
2907 | ||
2908 | ret = hns3_alloc_desc(ring); | |
2909 | if (ret) | |
2910 | goto out_with_desc_cb; | |
2911 | ||
2912 | if (!HNAE3_IS_TX_RING(ring)) { | |
2913 | ret = hns3_alloc_ring_buffers(ring); | |
2914 | if (ret) | |
2915 | goto out_with_desc; | |
2916 | } | |
2917 | ||
2918 | return 0; | |
2919 | ||
2920 | out_with_desc: | |
2921 | hns3_free_desc(ring); | |
2922 | out_with_desc_cb: | |
2923 | kfree(ring->desc_cb); | |
2924 | ring->desc_cb = NULL; | |
2925 | out: | |
2926 | return ret; | |
2927 | } | |
2928 | ||
2929 | static void hns3_fini_ring(struct hns3_enet_ring *ring) | |
2930 | { | |
2931 | hns3_free_desc(ring); | |
2932 | kfree(ring->desc_cb); | |
2933 | ring->desc_cb = NULL; | |
2934 | ring->next_to_clean = 0; | |
2935 | ring->next_to_use = 0; | |
2936 | } | |
2937 | ||
1db9b1bf | 2938 | static int hns3_buf_size2type(u32 buf_size) |
76ad4f0e S |
2939 | { |
2940 | int bd_size_type; | |
2941 | ||
2942 | switch (buf_size) { | |
2943 | case 512: | |
2944 | bd_size_type = HNS3_BD_SIZE_512_TYPE; | |
2945 | break; | |
2946 | case 1024: | |
2947 | bd_size_type = HNS3_BD_SIZE_1024_TYPE; | |
2948 | break; | |
2949 | case 2048: | |
2950 | bd_size_type = HNS3_BD_SIZE_2048_TYPE; | |
2951 | break; | |
2952 | case 4096: | |
2953 | bd_size_type = HNS3_BD_SIZE_4096_TYPE; | |
2954 | break; | |
2955 | default: | |
2956 | bd_size_type = HNS3_BD_SIZE_2048_TYPE; | |
2957 | } | |
2958 | ||
2959 | return bd_size_type; | |
2960 | } | |
2961 | ||
2962 | static void hns3_init_ring_hw(struct hns3_enet_ring *ring) | |
2963 | { | |
2964 | dma_addr_t dma = ring->desc_dma_addr; | |
2965 | struct hnae3_queue *q = ring->tqp; | |
2966 | ||
2967 | if (!HNAE3_IS_TX_RING(ring)) { | |
2968 | hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_L_REG, | |
2969 | (u32)dma); | |
2970 | hns3_write_dev(q, HNS3_RING_RX_RING_BASEADDR_H_REG, | |
2971 | (u32)((dma >> 31) >> 1)); | |
2972 | ||
2973 | hns3_write_dev(q, HNS3_RING_RX_RING_BD_LEN_REG, | |
2974 | hns3_buf_size2type(ring->buf_size)); | |
2975 | hns3_write_dev(q, HNS3_RING_RX_RING_BD_NUM_REG, | |
2976 | ring->desc_num / 8 - 1); | |
2977 | ||
2978 | } else { | |
2979 | hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_L_REG, | |
2980 | (u32)dma); | |
2981 | hns3_write_dev(q, HNS3_RING_TX_RING_BASEADDR_H_REG, | |
2982 | (u32)((dma >> 31) >> 1)); | |
2983 | ||
2984 | hns3_write_dev(q, HNS3_RING_TX_RING_BD_LEN_REG, | |
2985 | hns3_buf_size2type(ring->buf_size)); | |
2986 | hns3_write_dev(q, HNS3_RING_TX_RING_BD_NUM_REG, | |
2987 | ring->desc_num / 8 - 1); | |
2988 | } | |
2989 | } | |
2990 | ||
5668abda | 2991 | int hns3_init_all_ring(struct hns3_nic_priv *priv) |
76ad4f0e S |
2992 | { |
2993 | struct hnae3_handle *h = priv->ae_handle; | |
2994 | int ring_num = h->kinfo.num_tqps * 2; | |
2995 | int i, j; | |
2996 | int ret; | |
2997 | ||
2998 | for (i = 0; i < ring_num; i++) { | |
2999 | ret = hns3_alloc_ring_memory(priv->ring_data[i].ring); | |
3000 | if (ret) { | |
3001 | dev_err(priv->dev, | |
3002 | "Alloc ring memory fail! ret=%d\n", ret); | |
3003 | goto out_when_alloc_ring_memory; | |
3004 | } | |
3005 | ||
3006 | hns3_init_ring_hw(priv->ring_data[i].ring); | |
3007 | ||
3008 | u64_stats_init(&priv->ring_data[i].ring->syncp); | |
3009 | } | |
3010 | ||
3011 | return 0; | |
3012 | ||
3013 | out_when_alloc_ring_memory: | |
3014 | for (j = i - 1; j >= 0; j--) | |
ee83f776 | 3015 | hns3_fini_ring(priv->ring_data[j].ring); |
76ad4f0e S |
3016 | |
3017 | return -ENOMEM; | |
3018 | } | |
3019 | ||
5668abda | 3020 | int hns3_uninit_all_ring(struct hns3_nic_priv *priv) |
76ad4f0e S |
3021 | { |
3022 | struct hnae3_handle *h = priv->ae_handle; | |
3023 | int i; | |
3024 | ||
3025 | for (i = 0; i < h->kinfo.num_tqps; i++) { | |
3026 | if (h->ae_algo->ops->reset_queue) | |
3027 | h->ae_algo->ops->reset_queue(h, i); | |
3028 | ||
3029 | hns3_fini_ring(priv->ring_data[i].ring); | |
3030 | hns3_fini_ring(priv->ring_data[i + h->kinfo.num_tqps].ring); | |
3031 | } | |
76ad4f0e S |
3032 | return 0; |
3033 | } | |
3034 | ||
3035 | /* Set mac addr if it is configured. or leave it to the AE driver */ | |
f09555ff | 3036 | static void hns3_init_mac_addr(struct net_device *netdev, bool init) |
76ad4f0e S |
3037 | { |
3038 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
3039 | struct hnae3_handle *h = priv->ae_handle; | |
3040 | u8 mac_addr_temp[ETH_ALEN]; | |
3041 | ||
f09555ff | 3042 | if (h->ae_algo->ops->get_mac_addr && init) { |
76ad4f0e S |
3043 | h->ae_algo->ops->get_mac_addr(h, mac_addr_temp); |
3044 | ether_addr_copy(netdev->dev_addr, mac_addr_temp); | |
3045 | } | |
3046 | ||
3047 | /* Check if the MAC address is valid, if not get a random one */ | |
3048 | if (!is_valid_ether_addr(netdev->dev_addr)) { | |
3049 | eth_hw_addr_random(netdev); | |
3050 | dev_warn(priv->dev, "using random MAC address %pM\n", | |
3051 | netdev->dev_addr); | |
76ad4f0e | 3052 | } |
139e8792 L |
3053 | |
3054 | if (h->ae_algo->ops->set_mac_addr) | |
59098055 | 3055 | h->ae_algo->ops->set_mac_addr(h, netdev->dev_addr, true); |
139e8792 | 3056 | |
76ad4f0e S |
3057 | } |
3058 | ||
3059 | static void hns3_nic_set_priv_ops(struct net_device *netdev) | |
3060 | { | |
3061 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
3062 | ||
3063 | if ((netdev->features & NETIF_F_TSO) || | |
3064 | (netdev->features & NETIF_F_TSO6)) { | |
3065 | priv->ops.fill_desc = hns3_fill_desc_tso; | |
3066 | priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tso; | |
3067 | } else { | |
3068 | priv->ops.fill_desc = hns3_fill_desc; | |
3069 | priv->ops.maybe_stop_tx = hns3_nic_maybe_stop_tx; | |
3070 | } | |
3071 | } | |
3072 | ||
3073 | static int hns3_client_init(struct hnae3_handle *handle) | |
3074 | { | |
3075 | struct pci_dev *pdev = handle->pdev; | |
3076 | struct hns3_nic_priv *priv; | |
3077 | struct net_device *netdev; | |
3078 | int ret; | |
3079 | ||
3080 | netdev = alloc_etherdev_mq(sizeof(struct hns3_nic_priv), | |
678335a1 | 3081 | hns3_get_max_available_channels(handle)); |
76ad4f0e S |
3082 | if (!netdev) |
3083 | return -ENOMEM; | |
3084 | ||
3085 | priv = netdev_priv(netdev); | |
3086 | priv->dev = &pdev->dev; | |
3087 | priv->netdev = netdev; | |
3088 | priv->ae_handle = handle; | |
6d4c3981 SM |
3089 | priv->ae_handle->reset_level = HNAE3_NONE_RESET; |
3090 | priv->ae_handle->last_reset_time = jiffies; | |
f8fa222c | 3091 | priv->tx_timeout_count = 0; |
76ad4f0e S |
3092 | |
3093 | handle->kinfo.netdev = netdev; | |
3094 | handle->priv = (void *)priv; | |
3095 | ||
f09555ff | 3096 | hns3_init_mac_addr(netdev, true); |
76ad4f0e S |
3097 | |
3098 | hns3_set_default_feature(netdev); | |
3099 | ||
3100 | netdev->watchdog_timeo = HNS3_TX_TIMEOUT; | |
3101 | netdev->priv_flags |= IFF_UNICAST_FLT; | |
3102 | netdev->netdev_ops = &hns3_nic_netdev_ops; | |
3103 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
3104 | hns3_ethtool_set_ops(netdev); | |
3105 | hns3_nic_set_priv_ops(netdev); | |
3106 | ||
3107 | /* Carrier off reporting is important to ethtool even BEFORE open */ | |
3108 | netif_carrier_off(netdev); | |
3109 | ||
3110 | ret = hns3_get_ring_config(priv); | |
3111 | if (ret) { | |
3112 | ret = -ENOMEM; | |
3113 | goto out_get_ring_cfg; | |
3114 | } | |
3115 | ||
dd38c726 YL |
3116 | ret = hns3_nic_alloc_vector_data(priv); |
3117 | if (ret) { | |
3118 | ret = -ENOMEM; | |
3119 | goto out_alloc_vector_data; | |
3120 | } | |
3121 | ||
76ad4f0e S |
3122 | ret = hns3_nic_init_vector_data(priv); |
3123 | if (ret) { | |
3124 | ret = -ENOMEM; | |
3125 | goto out_init_vector_data; | |
3126 | } | |
3127 | ||
3128 | ret = hns3_init_all_ring(priv); | |
3129 | if (ret) { | |
3130 | ret = -ENOMEM; | |
3131 | goto out_init_ring_data; | |
3132 | } | |
3133 | ||
3134 | ret = register_netdev(netdev); | |
3135 | if (ret) { | |
3136 | dev_err(priv->dev, "probe register netdev fail!\n"); | |
3137 | goto out_reg_netdev_fail; | |
3138 | } | |
3139 | ||
986743db YL |
3140 | hns3_dcbnl_setup(handle); |
3141 | ||
a8e8b7ff S |
3142 | /* MTU range: (ETH_MIN_MTU(kernel default) - 9706) */ |
3143 | netdev->max_mtu = HNS3_MAX_MTU - (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); | |
3144 | ||
76ad4f0e S |
3145 | return ret; |
3146 | ||
3147 | out_reg_netdev_fail: | |
3148 | out_init_ring_data: | |
3149 | (void)hns3_nic_uninit_vector_data(priv); | |
76ad4f0e | 3150 | out_init_vector_data: |
dd38c726 YL |
3151 | hns3_nic_dealloc_vector_data(priv); |
3152 | out_alloc_vector_data: | |
3153 | priv->ring_data = NULL; | |
76ad4f0e S |
3154 | out_get_ring_cfg: |
3155 | priv->ae_handle = NULL; | |
3156 | free_netdev(netdev); | |
3157 | return ret; | |
3158 | } | |
3159 | ||
3160 | static void hns3_client_uninit(struct hnae3_handle *handle, bool reset) | |
3161 | { | |
3162 | struct net_device *netdev = handle->kinfo.netdev; | |
3163 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
3164 | int ret; | |
3165 | ||
3166 | if (netdev->reg_state != NETREG_UNINITIALIZED) | |
3167 | unregister_netdev(netdev); | |
3168 | ||
3169 | ret = hns3_nic_uninit_vector_data(priv); | |
3170 | if (ret) | |
3171 | netdev_err(netdev, "uninit vector error\n"); | |
3172 | ||
dd38c726 YL |
3173 | ret = hns3_nic_dealloc_vector_data(priv); |
3174 | if (ret) | |
3175 | netdev_err(netdev, "dealloc vector error\n"); | |
3176 | ||
76ad4f0e S |
3177 | ret = hns3_uninit_all_ring(priv); |
3178 | if (ret) | |
3179 | netdev_err(netdev, "uninit ring error\n"); | |
3180 | ||
ec777890 YL |
3181 | hns3_put_ring_config(priv); |
3182 | ||
76ad4f0e S |
3183 | priv->ring_data = NULL; |
3184 | ||
3185 | free_netdev(netdev); | |
3186 | } | |
3187 | ||
3188 | static void hns3_link_status_change(struct hnae3_handle *handle, bool linkup) | |
3189 | { | |
3190 | struct net_device *netdev = handle->kinfo.netdev; | |
3191 | ||
3192 | if (!netdev) | |
3193 | return; | |
3194 | ||
3195 | if (linkup) { | |
3196 | netif_carrier_on(netdev); | |
3197 | netif_tx_wake_all_queues(netdev); | |
3198 | netdev_info(netdev, "link up\n"); | |
3199 | } else { | |
3200 | netif_carrier_off(netdev); | |
3201 | netif_tx_stop_all_queues(netdev); | |
3202 | netdev_info(netdev, "link down\n"); | |
3203 | } | |
3204 | } | |
3205 | ||
9df8f79a YL |
3206 | static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc) |
3207 | { | |
3208 | struct hnae3_knic_private_info *kinfo = &handle->kinfo; | |
3209 | struct net_device *ndev = kinfo->netdev; | |
075cfdd6 | 3210 | bool if_running; |
9df8f79a YL |
3211 | int ret; |
3212 | u8 i; | |
3213 | ||
3214 | if (tc > HNAE3_MAX_TC) | |
3215 | return -EINVAL; | |
3216 | ||
3217 | if (!ndev) | |
3218 | return -ENODEV; | |
3219 | ||
075cfdd6 CIK |
3220 | if_running = netif_running(ndev); |
3221 | ||
9df8f79a YL |
3222 | ret = netdev_set_num_tc(ndev, tc); |
3223 | if (ret) | |
3224 | return ret; | |
3225 | ||
3226 | if (if_running) { | |
3227 | (void)hns3_nic_net_stop(ndev); | |
3228 | msleep(100); | |
3229 | } | |
3230 | ||
3231 | ret = (kinfo->dcb_ops && kinfo->dcb_ops->map_update) ? | |
3232 | kinfo->dcb_ops->map_update(handle) : -EOPNOTSUPP; | |
3233 | if (ret) | |
3234 | goto err_out; | |
3235 | ||
3236 | if (tc <= 1) { | |
3237 | netdev_reset_tc(ndev); | |
3238 | goto out; | |
3239 | } | |
3240 | ||
3241 | for (i = 0; i < HNAE3_MAX_TC; i++) { | |
3242 | struct hnae3_tc_info *tc_info = &kinfo->tc_info[i]; | |
3243 | ||
3244 | if (tc_info->enable) | |
3245 | netdev_set_tc_queue(ndev, | |
3246 | tc_info->tc, | |
3247 | tc_info->tqp_count, | |
3248 | tc_info->tqp_offset); | |
3249 | } | |
3250 | ||
3251 | for (i = 0; i < HNAE3_MAX_USER_PRIO; i++) { | |
3252 | netdev_set_prio_tc_map(ndev, i, | |
3253 | kinfo->prio_tc[i]); | |
3254 | } | |
3255 | ||
3256 | out: | |
3257 | ret = hns3_nic_set_real_num_queue(ndev); | |
3258 | ||
3259 | err_out: | |
3260 | if (if_running) | |
3261 | (void)hns3_nic_net_open(ndev); | |
3262 | ||
3263 | return ret; | |
3264 | } | |
3265 | ||
bb6b94a8 L |
3266 | static void hns3_recover_hw_addr(struct net_device *ndev) |
3267 | { | |
3268 | struct netdev_hw_addr_list *list; | |
3269 | struct netdev_hw_addr *ha, *tmp; | |
3270 | ||
3271 | /* go through and sync uc_addr entries to the device */ | |
3272 | list = &ndev->uc; | |
3273 | list_for_each_entry_safe(ha, tmp, &list->list, list) | |
3274 | hns3_nic_uc_sync(ndev, ha->addr); | |
3275 | ||
3276 | /* go through and sync mc_addr entries to the device */ | |
3277 | list = &ndev->mc; | |
3278 | list_for_each_entry_safe(ha, tmp, &list->list, list) | |
3279 | hns3_nic_mc_sync(ndev, ha->addr); | |
3280 | } | |
3281 | ||
beebca3a | 3282 | static void hns3_clear_tx_ring(struct hns3_enet_ring *ring) |
bb6b94a8 | 3283 | { |
beebca3a YL |
3284 | if (!HNAE3_IS_TX_RING(ring)) |
3285 | return; | |
3286 | ||
3287 | while (ring->next_to_clean != ring->next_to_use) { | |
3288 | hns3_free_buffer_detach(ring, ring->next_to_clean); | |
3289 | ring_ptr_move_fw(ring, next_to_clean); | |
3290 | } | |
3291 | } | |
3292 | ||
3293 | static void hns3_clear_rx_ring(struct hns3_enet_ring *ring) | |
3294 | { | |
3295 | if (HNAE3_IS_TX_RING(ring)) | |
3296 | return; | |
3297 | ||
3298 | while (ring->next_to_use != ring->next_to_clean) { | |
3299 | /* When a buffer is not reused, it's memory has been | |
3300 | * freed in hns3_handle_rx_bd or will be freed by | |
3301 | * stack, so only need to unmap the buffer here. | |
3302 | */ | |
3303 | if (!ring->desc_cb[ring->next_to_use].reuse_flag) { | |
3304 | hns3_unmap_buffer(ring, | |
3305 | &ring->desc_cb[ring->next_to_use]); | |
3306 | ring->desc_cb[ring->next_to_use].dma = 0; | |
3307 | } | |
3308 | ||
3309 | ring_ptr_move_fw(ring, next_to_use); | |
3310 | } | |
bb6b94a8 L |
3311 | } |
3312 | ||
3313 | static void hns3_clear_all_ring(struct hnae3_handle *h) | |
3314 | { | |
3315 | struct net_device *ndev = h->kinfo.netdev; | |
3316 | struct hns3_nic_priv *priv = netdev_priv(ndev); | |
3317 | u32 i; | |
3318 | ||
3319 | for (i = 0; i < h->kinfo.num_tqps; i++) { | |
3320 | struct netdev_queue *dev_queue; | |
3321 | struct hns3_enet_ring *ring; | |
3322 | ||
3323 | ring = priv->ring_data[i].ring; | |
beebca3a | 3324 | hns3_clear_tx_ring(ring); |
bb6b94a8 L |
3325 | dev_queue = netdev_get_tx_queue(ndev, |
3326 | priv->ring_data[i].queue_index); | |
3327 | netdev_tx_reset_queue(dev_queue); | |
3328 | ||
3329 | ring = priv->ring_data[i + h->kinfo.num_tqps].ring; | |
beebca3a | 3330 | hns3_clear_rx_ring(ring); |
bb6b94a8 L |
3331 | } |
3332 | } | |
3333 | ||
3334 | static int hns3_reset_notify_down_enet(struct hnae3_handle *handle) | |
3335 | { | |
3336 | struct hnae3_knic_private_info *kinfo = &handle->kinfo; | |
3337 | struct net_device *ndev = kinfo->netdev; | |
3338 | ||
3339 | if (!netif_running(ndev)) | |
3340 | return -EIO; | |
3341 | ||
3342 | return hns3_nic_net_stop(ndev); | |
3343 | } | |
3344 | ||
3345 | static int hns3_reset_notify_up_enet(struct hnae3_handle *handle) | |
3346 | { | |
3347 | struct hnae3_knic_private_info *kinfo = &handle->kinfo; | |
bb6b94a8 L |
3348 | int ret = 0; |
3349 | ||
3350 | if (netif_running(kinfo->netdev)) { | |
3351 | ret = hns3_nic_net_up(kinfo->netdev); | |
3352 | if (ret) { | |
3353 | netdev_err(kinfo->netdev, | |
3354 | "hns net up fail, ret=%d!\n", ret); | |
3355 | return ret; | |
3356 | } | |
6d4c3981 | 3357 | handle->last_reset_time = jiffies; |
bb6b94a8 L |
3358 | } |
3359 | ||
3360 | return ret; | |
3361 | } | |
3362 | ||
3363 | static int hns3_reset_notify_init_enet(struct hnae3_handle *handle) | |
3364 | { | |
3365 | struct net_device *netdev = handle->kinfo.netdev; | |
3366 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
3367 | int ret; | |
3368 | ||
f09555ff | 3369 | hns3_init_mac_addr(netdev, false); |
bb6b94a8 L |
3370 | hns3_nic_set_rx_mode(netdev); |
3371 | hns3_recover_hw_addr(netdev); | |
3372 | ||
681ec399 YL |
3373 | /* Hardware table is only clear when pf resets */ |
3374 | if (!(handle->flags & HNAE3_SUPPORT_VF)) | |
3375 | hns3_restore_vlan(netdev); | |
3376 | ||
bb6b94a8 L |
3377 | /* Carrier off reporting is important to ethtool even BEFORE open */ |
3378 | netif_carrier_off(netdev); | |
3379 | ||
3380 | ret = hns3_get_ring_config(priv); | |
3381 | if (ret) | |
3382 | return ret; | |
3383 | ||
3384 | ret = hns3_nic_init_vector_data(priv); | |
3385 | if (ret) | |
3386 | return ret; | |
3387 | ||
3388 | ret = hns3_init_all_ring(priv); | |
3389 | if (ret) { | |
3390 | hns3_nic_uninit_vector_data(priv); | |
3391 | priv->ring_data = NULL; | |
3392 | } | |
3393 | ||
3394 | return ret; | |
3395 | } | |
3396 | ||
3397 | static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle) | |
3398 | { | |
3399 | struct net_device *netdev = handle->kinfo.netdev; | |
3400 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
3401 | int ret; | |
3402 | ||
3403 | hns3_clear_all_ring(handle); | |
3404 | ||
3405 | ret = hns3_nic_uninit_vector_data(priv); | |
3406 | if (ret) { | |
3407 | netdev_err(netdev, "uninit vector error\n"); | |
3408 | return ret; | |
3409 | } | |
3410 | ||
3411 | ret = hns3_uninit_all_ring(priv); | |
3412 | if (ret) | |
3413 | netdev_err(netdev, "uninit ring error\n"); | |
3414 | ||
ec777890 YL |
3415 | hns3_put_ring_config(priv); |
3416 | ||
bb6b94a8 L |
3417 | priv->ring_data = NULL; |
3418 | ||
3419 | return ret; | |
3420 | } | |
3421 | ||
3422 | static int hns3_reset_notify(struct hnae3_handle *handle, | |
3423 | enum hnae3_reset_notify_type type) | |
3424 | { | |
3425 | int ret = 0; | |
3426 | ||
3427 | switch (type) { | |
3428 | case HNAE3_UP_CLIENT: | |
e1586241 SM |
3429 | ret = hns3_reset_notify_up_enet(handle); |
3430 | break; | |
bb6b94a8 L |
3431 | case HNAE3_DOWN_CLIENT: |
3432 | ret = hns3_reset_notify_down_enet(handle); | |
3433 | break; | |
3434 | case HNAE3_INIT_CLIENT: | |
3435 | ret = hns3_reset_notify_init_enet(handle); | |
3436 | break; | |
3437 | case HNAE3_UNINIT_CLIENT: | |
3438 | ret = hns3_reset_notify_uninit_enet(handle); | |
3439 | break; | |
3440 | default: | |
3441 | break; | |
3442 | } | |
3443 | ||
3444 | return ret; | |
3445 | } | |
3446 | ||
7a242b23 YL |
3447 | static void hns3_restore_coal(struct hns3_nic_priv *priv, |
3448 | struct hns3_enet_coalesce *tx, | |
3449 | struct hns3_enet_coalesce *rx) | |
3450 | { | |
3451 | u16 vector_num = priv->vector_num; | |
3452 | int i; | |
3453 | ||
3454 | for (i = 0; i < vector_num; i++) { | |
3455 | memcpy(&priv->tqp_vector[i].tx_group.coal, tx, | |
3456 | sizeof(struct hns3_enet_coalesce)); | |
3457 | memcpy(&priv->tqp_vector[i].rx_group.coal, rx, | |
3458 | sizeof(struct hns3_enet_coalesce)); | |
3459 | } | |
3460 | } | |
3461 | ||
3462 | static int hns3_modify_tqp_num(struct net_device *netdev, u16 new_tqp_num, | |
3463 | struct hns3_enet_coalesce *tx, | |
3464 | struct hns3_enet_coalesce *rx) | |
09f2af64 PL |
3465 | { |
3466 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
3467 | struct hnae3_handle *h = hns3_get_handle(netdev); | |
3468 | int ret; | |
3469 | ||
3470 | ret = h->ae_algo->ops->set_channels(h, new_tqp_num); | |
3471 | if (ret) | |
3472 | return ret; | |
3473 | ||
3474 | ret = hns3_get_ring_config(priv); | |
3475 | if (ret) | |
3476 | return ret; | |
3477 | ||
dd38c726 YL |
3478 | ret = hns3_nic_alloc_vector_data(priv); |
3479 | if (ret) | |
3480 | goto err_alloc_vector; | |
3481 | ||
7a242b23 YL |
3482 | hns3_restore_coal(priv, tx, rx); |
3483 | ||
09f2af64 PL |
3484 | ret = hns3_nic_init_vector_data(priv); |
3485 | if (ret) | |
3486 | goto err_uninit_vector; | |
3487 | ||
3488 | ret = hns3_init_all_ring(priv); | |
3489 | if (ret) | |
3490 | goto err_put_ring; | |
3491 | ||
3492 | return 0; | |
3493 | ||
3494 | err_put_ring: | |
3495 | hns3_put_ring_config(priv); | |
3496 | err_uninit_vector: | |
3497 | hns3_nic_uninit_vector_data(priv); | |
dd38c726 YL |
3498 | err_alloc_vector: |
3499 | hns3_nic_dealloc_vector_data(priv); | |
09f2af64 PL |
3500 | return ret; |
3501 | } | |
3502 | ||
3503 | static int hns3_adjust_tqps_num(u8 num_tc, u32 new_tqp_num) | |
3504 | { | |
3505 | return (new_tqp_num / num_tc) * num_tc; | |
3506 | } | |
3507 | ||
3508 | int hns3_set_channels(struct net_device *netdev, | |
3509 | struct ethtool_channels *ch) | |
3510 | { | |
3511 | struct hns3_nic_priv *priv = netdev_priv(netdev); | |
3512 | struct hnae3_handle *h = hns3_get_handle(netdev); | |
3513 | struct hnae3_knic_private_info *kinfo = &h->kinfo; | |
7a242b23 | 3514 | struct hns3_enet_coalesce tx_coal, rx_coal; |
09f2af64 PL |
3515 | bool if_running = netif_running(netdev); |
3516 | u32 new_tqp_num = ch->combined_count; | |
3517 | u16 org_tqp_num; | |
3518 | int ret; | |
3519 | ||
3520 | if (ch->rx_count || ch->tx_count) | |
3521 | return -EINVAL; | |
3522 | ||
678335a1 | 3523 | if (new_tqp_num > hns3_get_max_available_channels(h) || |
09f2af64 PL |
3524 | new_tqp_num < kinfo->num_tc) { |
3525 | dev_err(&netdev->dev, | |
3526 | "Change tqps fail, the tqp range is from %d to %d", | |
3527 | kinfo->num_tc, | |
678335a1 | 3528 | hns3_get_max_available_channels(h)); |
09f2af64 PL |
3529 | return -EINVAL; |
3530 | } | |
3531 | ||
3532 | new_tqp_num = hns3_adjust_tqps_num(kinfo->num_tc, new_tqp_num); | |
3533 | if (kinfo->num_tqps == new_tqp_num) | |
3534 | return 0; | |
3535 | ||
3536 | if (if_running) | |
20e4bf98 | 3537 | hns3_nic_net_stop(netdev); |
09f2af64 PL |
3538 | |
3539 | hns3_clear_all_ring(h); | |
3540 | ||
3541 | ret = hns3_nic_uninit_vector_data(priv); | |
3542 | if (ret) { | |
3543 | dev_err(&netdev->dev, | |
3544 | "Unbind vector with tqp fail, nothing is changed"); | |
3545 | goto open_netdev; | |
3546 | } | |
3547 | ||
7a242b23 YL |
3548 | /* Changing the tqp num may also change the vector num, |
3549 | * ethtool only support setting and querying one coal | |
3550 | * configuation for now, so save the vector 0' coal | |
3551 | * configuation here in order to restore it. | |
3552 | */ | |
3553 | memcpy(&tx_coal, &priv->tqp_vector[0].tx_group.coal, | |
3554 | sizeof(struct hns3_enet_coalesce)); | |
3555 | memcpy(&rx_coal, &priv->tqp_vector[0].rx_group.coal, | |
3556 | sizeof(struct hns3_enet_coalesce)); | |
3557 | ||
dd38c726 YL |
3558 | hns3_nic_dealloc_vector_data(priv); |
3559 | ||
09f2af64 | 3560 | hns3_uninit_all_ring(priv); |
ec777890 | 3561 | hns3_put_ring_config(priv); |
09f2af64 PL |
3562 | |
3563 | org_tqp_num = h->kinfo.num_tqps; | |
7a242b23 | 3564 | ret = hns3_modify_tqp_num(netdev, new_tqp_num, &tx_coal, &rx_coal); |
09f2af64 | 3565 | if (ret) { |
7a242b23 YL |
3566 | ret = hns3_modify_tqp_num(netdev, org_tqp_num, |
3567 | &tx_coal, &rx_coal); | |
09f2af64 PL |
3568 | if (ret) { |
3569 | /* If revert to old tqp failed, fatal error occurred */ | |
3570 | dev_err(&netdev->dev, | |
3571 | "Revert to old tqp num fail, ret=%d", ret); | |
3572 | return ret; | |
3573 | } | |
3574 | dev_info(&netdev->dev, | |
3575 | "Change tqp num fail, Revert to old tqp num"); | |
3576 | } | |
3577 | ||
3578 | open_netdev: | |
3579 | if (if_running) | |
20e4bf98 | 3580 | hns3_nic_net_open(netdev); |
09f2af64 PL |
3581 | |
3582 | return ret; | |
3583 | } | |
3584 | ||
1db9b1bf | 3585 | static const struct hnae3_client_ops client_ops = { |
76ad4f0e S |
3586 | .init_instance = hns3_client_init, |
3587 | .uninit_instance = hns3_client_uninit, | |
3588 | .link_status_change = hns3_link_status_change, | |
9df8f79a | 3589 | .setup_tc = hns3_client_setup_tc, |
bb6b94a8 | 3590 | .reset_notify = hns3_reset_notify, |
76ad4f0e S |
3591 | }; |
3592 | ||
3593 | /* hns3_init_module - Driver registration routine | |
3594 | * hns3_init_module is the first routine called when the driver is | |
3595 | * loaded. All it does is register with the PCI subsystem. | |
3596 | */ | |
3597 | static int __init hns3_init_module(void) | |
3598 | { | |
3599 | int ret; | |
3600 | ||
3601 | pr_info("%s: %s - version\n", hns3_driver_name, hns3_driver_string); | |
3602 | pr_info("%s: %s\n", hns3_driver_name, hns3_copyright); | |
3603 | ||
3604 | client.type = HNAE3_CLIENT_KNIC; | |
3605 | snprintf(client.name, HNAE3_CLIENT_NAME_LENGTH - 1, "%s", | |
3606 | hns3_driver_name); | |
3607 | ||
3608 | client.ops = &client_ops; | |
3609 | ||
3610 | ret = hnae3_register_client(&client); | |
3611 | if (ret) | |
3612 | return ret; | |
3613 | ||
3614 | ret = pci_register_driver(&hns3_driver); | |
3615 | if (ret) | |
3616 | hnae3_unregister_client(&client); | |
3617 | ||
3618 | return ret; | |
3619 | } | |
3620 | module_init(hns3_init_module); | |
3621 | ||
3622 | /* hns3_exit_module - Driver exit cleanup routine | |
3623 | * hns3_exit_module is called just before the driver is removed | |
3624 | * from memory. | |
3625 | */ | |
3626 | static void __exit hns3_exit_module(void) | |
3627 | { | |
3628 | pci_unregister_driver(&hns3_driver); | |
3629 | hnae3_unregister_client(&client); | |
3630 | } | |
3631 | module_exit(hns3_exit_module); | |
3632 | ||
3633 | MODULE_DESCRIPTION("HNS3: Hisilicon Ethernet Driver"); | |
3634 | MODULE_AUTHOR("Huawei Tech. Co., Ltd."); | |
3635 | MODULE_LICENSE("GPL"); | |
3636 | MODULE_ALIAS("pci:hns-nic"); |