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f62b8bb8 AV |
1 | /* |
2 | * Copyright (c) 2015, Mellanox Technologies. All rights reserved. | |
3 | * | |
4 | * This software is available to you under a choice of one of two | |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * OpenIB.org BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | */ | |
32 | ||
33 | #include <linux/if_vlan.h> | |
34 | #include <linux/etherdevice.h> | |
35 | #include <linux/mlx5/driver.h> | |
36 | #include <linux/mlx5/qp.h> | |
37 | #include <linux/mlx5/cq.h> | |
d18a9470 | 38 | #include <linux/mlx5/vport.h> |
f62b8bb8 AV |
39 | #include "wq.h" |
40 | #include "transobj.h" | |
41 | #include "mlx5_core.h" | |
42 | ||
43 | #define MLX5E_MAX_NUM_TC 8 | |
44 | ||
45 | #define MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE 0x7 | |
46 | #define MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE 0xa | |
47 | #define MLX5E_PARAMS_MAXIMUM_LOG_SQ_SIZE 0xd | |
48 | ||
49 | #define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE 0x7 | |
50 | #define MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE 0xa | |
51 | #define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE 0xd | |
52 | ||
53 | #define MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ (16 * 1024) | |
54 | #define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC 0x10 | |
55 | #define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS 0x20 | |
56 | #define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC 0x10 | |
57 | #define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS 0x20 | |
58 | #define MLX5E_PARAMS_DEFAULT_MIN_RX_WQES 0x80 | |
59 | #define MLX5E_PARAMS_DEFAULT_RX_HASH_LOG_TBL_SZ 0x7 | |
f62b8bb8 AV |
60 | |
61 | #define MLX5E_TX_CQ_POLL_BUDGET 128 | |
62 | #define MLX5E_UPDATE_STATS_INTERVAL 200 /* msecs */ | |
63 | ||
64 | static const char vport_strings[][ETH_GSTRING_LEN] = { | |
65 | /* vport statistics */ | |
66 | "rx_packets", | |
67 | "rx_bytes", | |
68 | "tx_packets", | |
69 | "tx_bytes", | |
70 | "rx_error_packets", | |
71 | "rx_error_bytes", | |
72 | "tx_error_packets", | |
73 | "tx_error_bytes", | |
74 | "rx_unicast_packets", | |
75 | "rx_unicast_bytes", | |
76 | "tx_unicast_packets", | |
77 | "tx_unicast_bytes", | |
78 | "rx_multicast_packets", | |
79 | "rx_multicast_bytes", | |
80 | "tx_multicast_packets", | |
81 | "tx_multicast_bytes", | |
82 | "rx_broadcast_packets", | |
83 | "rx_broadcast_bytes", | |
84 | "tx_broadcast_packets", | |
85 | "tx_broadcast_bytes", | |
86 | ||
87 | /* SW counters */ | |
88 | "tso_packets", | |
89 | "tso_bytes", | |
90 | "lro_packets", | |
91 | "lro_bytes", | |
92 | "rx_csum_good", | |
93 | "rx_csum_none", | |
94 | "tx_csum_offload", | |
95 | "tx_queue_stopped", | |
96 | "tx_queue_wake", | |
97 | "tx_queue_dropped", | |
98 | "rx_wqe_err", | |
99 | }; | |
100 | ||
101 | struct mlx5e_vport_stats { | |
102 | /* HW counters */ | |
103 | u64 rx_packets; | |
104 | u64 rx_bytes; | |
105 | u64 tx_packets; | |
106 | u64 tx_bytes; | |
107 | u64 rx_error_packets; | |
108 | u64 rx_error_bytes; | |
109 | u64 tx_error_packets; | |
110 | u64 tx_error_bytes; | |
111 | u64 rx_unicast_packets; | |
112 | u64 rx_unicast_bytes; | |
113 | u64 tx_unicast_packets; | |
114 | u64 tx_unicast_bytes; | |
115 | u64 rx_multicast_packets; | |
116 | u64 rx_multicast_bytes; | |
117 | u64 tx_multicast_packets; | |
118 | u64 tx_multicast_bytes; | |
119 | u64 rx_broadcast_packets; | |
120 | u64 rx_broadcast_bytes; | |
121 | u64 tx_broadcast_packets; | |
122 | u64 tx_broadcast_bytes; | |
123 | ||
124 | /* SW counters */ | |
125 | u64 tso_packets; | |
126 | u64 tso_bytes; | |
127 | u64 lro_packets; | |
128 | u64 lro_bytes; | |
129 | u64 rx_csum_good; | |
130 | u64 rx_csum_none; | |
131 | u64 tx_csum_offload; | |
132 | u64 tx_queue_stopped; | |
133 | u64 tx_queue_wake; | |
134 | u64 tx_queue_dropped; | |
135 | u64 rx_wqe_err; | |
136 | ||
137 | #define NUM_VPORT_COUNTERS 31 | |
138 | }; | |
139 | ||
140 | static const char rq_stats_strings[][ETH_GSTRING_LEN] = { | |
141 | "packets", | |
142 | "csum_none", | |
143 | "lro_packets", | |
144 | "lro_bytes", | |
145 | "wqe_err" | |
146 | }; | |
147 | ||
148 | struct mlx5e_rq_stats { | |
149 | u64 packets; | |
150 | u64 csum_none; | |
151 | u64 lro_packets; | |
152 | u64 lro_bytes; | |
153 | u64 wqe_err; | |
154 | #define NUM_RQ_STATS 5 | |
155 | }; | |
156 | ||
157 | static const char sq_stats_strings[][ETH_GSTRING_LEN] = { | |
158 | "packets", | |
159 | "tso_packets", | |
160 | "tso_bytes", | |
161 | "csum_offload_none", | |
162 | "stopped", | |
163 | "wake", | |
164 | "dropped", | |
165 | "nop" | |
166 | }; | |
167 | ||
168 | struct mlx5e_sq_stats { | |
169 | u64 packets; | |
170 | u64 tso_packets; | |
171 | u64 tso_bytes; | |
172 | u64 csum_offload_none; | |
173 | u64 stopped; | |
174 | u64 wake; | |
175 | u64 dropped; | |
176 | u64 nop; | |
177 | #define NUM_SQ_STATS 8 | |
178 | }; | |
179 | ||
180 | struct mlx5e_stats { | |
181 | struct mlx5e_vport_stats vport; | |
182 | }; | |
183 | ||
184 | struct mlx5e_params { | |
185 | u8 log_sq_size; | |
186 | u8 log_rq_size; | |
187 | u16 num_channels; | |
188 | u8 default_vlan_prio; | |
189 | u8 num_tc; | |
190 | u16 rx_cq_moderation_usec; | |
191 | u16 rx_cq_moderation_pkts; | |
192 | u16 tx_cq_moderation_usec; | |
193 | u16 tx_cq_moderation_pkts; | |
194 | u16 min_rx_wqes; | |
195 | u16 rx_hash_log_tbl_sz; | |
196 | bool lro_en; | |
197 | u32 lro_wqe_sz; | |
2be6967c | 198 | u8 rss_hfunc; |
f62b8bb8 AV |
199 | }; |
200 | ||
201 | enum { | |
202 | MLX5E_RQ_STATE_POST_WQES_ENABLE, | |
203 | }; | |
204 | ||
205 | enum cq_flags { | |
206 | MLX5E_CQ_HAS_CQES = 1, | |
207 | }; | |
208 | ||
209 | struct mlx5e_cq { | |
210 | /* data path - accessed per cqe */ | |
211 | struct mlx5_cqwq wq; | |
f62b8bb8 AV |
212 | unsigned long flags; |
213 | ||
214 | /* data path - accessed per napi poll */ | |
215 | struct napi_struct *napi; | |
216 | struct mlx5_core_cq mcq; | |
217 | struct mlx5e_channel *channel; | |
218 | ||
219 | /* control */ | |
220 | struct mlx5_wq_ctrl wq_ctrl; | |
221 | } ____cacheline_aligned_in_smp; | |
222 | ||
223 | struct mlx5e_rq { | |
224 | /* data path */ | |
225 | struct mlx5_wq_ll wq; | |
226 | u32 wqe_sz; | |
227 | struct sk_buff **skb; | |
228 | ||
229 | struct device *pdev; | |
230 | struct net_device *netdev; | |
231 | struct mlx5e_rq_stats stats; | |
232 | struct mlx5e_cq cq; | |
233 | ||
234 | unsigned long state; | |
235 | int ix; | |
236 | ||
237 | /* control */ | |
238 | struct mlx5_wq_ctrl wq_ctrl; | |
239 | u32 rqn; | |
240 | struct mlx5e_channel *channel; | |
241 | } ____cacheline_aligned_in_smp; | |
242 | ||
243 | struct mlx5e_tx_skb_cb { | |
244 | u32 num_bytes; | |
245 | u8 num_wqebbs; | |
246 | u8 num_dma; | |
247 | }; | |
248 | ||
249 | #define MLX5E_TX_SKB_CB(__skb) ((struct mlx5e_tx_skb_cb *)__skb->cb) | |
250 | ||
251 | struct mlx5e_sq_dma { | |
252 | dma_addr_t addr; | |
253 | u32 size; | |
254 | }; | |
255 | ||
256 | enum { | |
257 | MLX5E_SQ_STATE_WAKE_TXQ_ENABLE, | |
258 | }; | |
259 | ||
260 | struct mlx5e_sq { | |
261 | /* data path */ | |
262 | ||
263 | /* dirtied @completion */ | |
264 | u16 cc; | |
265 | u32 dma_fifo_cc; | |
266 | ||
267 | /* dirtied @xmit */ | |
268 | u16 pc ____cacheline_aligned_in_smp; | |
269 | u32 dma_fifo_pc; | |
270 | u32 bf_offset; | |
271 | struct mlx5e_sq_stats stats; | |
272 | ||
273 | struct mlx5e_cq cq; | |
274 | ||
275 | /* pointers to per packet info: write@xmit, read@completion */ | |
276 | struct sk_buff **skb; | |
277 | struct mlx5e_sq_dma *dma_fifo; | |
278 | ||
279 | /* read only */ | |
280 | struct mlx5_wq_cyc wq; | |
281 | u32 dma_fifo_mask; | |
282 | void __iomem *uar_map; | |
283 | struct netdev_queue *txq; | |
284 | u32 sqn; | |
285 | u32 bf_buf_size; | |
12be4b21 SM |
286 | u16 max_inline; |
287 | u16 edge; | |
f62b8bb8 AV |
288 | struct device *pdev; |
289 | __be32 mkey_be; | |
290 | unsigned long state; | |
291 | ||
292 | /* control path */ | |
293 | struct mlx5_wq_ctrl wq_ctrl; | |
294 | struct mlx5_uar uar; | |
295 | struct mlx5e_channel *channel; | |
296 | int tc; | |
297 | } ____cacheline_aligned_in_smp; | |
298 | ||
299 | static inline bool mlx5e_sq_has_room_for(struct mlx5e_sq *sq, u16 n) | |
300 | { | |
301 | return (((sq->wq.sz_m1 & (sq->cc - sq->pc)) >= n) || | |
302 | (sq->cc == sq->pc)); | |
303 | } | |
304 | ||
305 | enum channel_flags { | |
306 | MLX5E_CHANNEL_NAPI_SCHED = 1, | |
307 | }; | |
308 | ||
309 | struct mlx5e_channel { | |
310 | /* data path */ | |
311 | struct mlx5e_rq rq; | |
312 | struct mlx5e_sq sq[MLX5E_MAX_NUM_TC]; | |
313 | struct napi_struct napi; | |
314 | struct device *pdev; | |
315 | struct net_device *netdev; | |
316 | __be32 mkey_be; | |
317 | u8 num_tc; | |
318 | unsigned long flags; | |
03289b88 | 319 | int tc_to_txq_map[MLX5E_MAX_NUM_TC]; |
f62b8bb8 AV |
320 | |
321 | /* control */ | |
322 | struct mlx5e_priv *priv; | |
323 | int ix; | |
324 | int cpu; | |
325 | }; | |
326 | ||
327 | enum mlx5e_traffic_types { | |
328 | MLX5E_TT_IPV4_TCP = 0, | |
329 | MLX5E_TT_IPV6_TCP = 1, | |
330 | MLX5E_TT_IPV4_UDP = 2, | |
331 | MLX5E_TT_IPV6_UDP = 3, | |
332 | MLX5E_TT_IPV4 = 4, | |
333 | MLX5E_TT_IPV6 = 5, | |
334 | MLX5E_TT_ANY = 6, | |
335 | MLX5E_NUM_TT = 7, | |
336 | }; | |
337 | ||
338 | enum { | |
339 | MLX5E_RQT_SPREADING = 0, | |
340 | MLX5E_RQT_DEFAULT_RQ = 1, | |
341 | MLX5E_NUM_RQT = 2, | |
342 | }; | |
343 | ||
344 | struct mlx5e_eth_addr_info { | |
345 | u8 addr[ETH_ALEN + 2]; | |
346 | u32 tt_vec; | |
347 | u32 ft_ix[MLX5E_NUM_TT]; /* flow table index per traffic type */ | |
348 | }; | |
349 | ||
350 | #define MLX5E_ETH_ADDR_HASH_SIZE (1 << BITS_PER_BYTE) | |
351 | ||
352 | struct mlx5e_eth_addr_db { | |
353 | struct hlist_head netdev_uc[MLX5E_ETH_ADDR_HASH_SIZE]; | |
354 | struct hlist_head netdev_mc[MLX5E_ETH_ADDR_HASH_SIZE]; | |
355 | struct mlx5e_eth_addr_info broadcast; | |
356 | struct mlx5e_eth_addr_info allmulti; | |
357 | struct mlx5e_eth_addr_info promisc; | |
358 | bool broadcast_enabled; | |
359 | bool allmulti_enabled; | |
360 | bool promisc_enabled; | |
361 | }; | |
362 | ||
363 | enum { | |
364 | MLX5E_STATE_ASYNC_EVENTS_ENABLE, | |
365 | MLX5E_STATE_OPENED, | |
366 | }; | |
367 | ||
368 | struct mlx5e_vlan_db { | |
369 | unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; | |
370 | u32 active_vlans_ft_ix[VLAN_N_VID]; | |
371 | u32 untagged_rule_ft_ix; | |
372 | u32 any_vlan_rule_ft_ix; | |
373 | bool filter_disabled; | |
374 | }; | |
375 | ||
376 | struct mlx5e_flow_table { | |
377 | void *vlan; | |
378 | void *main; | |
379 | }; | |
380 | ||
381 | struct mlx5e_priv { | |
382 | /* priv data path fields - start */ | |
f62b8bb8 AV |
383 | int num_tc; |
384 | int default_vlan_prio; | |
03289b88 | 385 | struct mlx5e_sq **txq_to_sq_map; |
f62b8bb8 AV |
386 | /* priv data path fields - end */ |
387 | ||
388 | unsigned long state; | |
389 | struct mutex state_lock; /* Protects Interface state */ | |
390 | struct mlx5_uar cq_uar; | |
391 | u32 pdn; | |
3191e05f | 392 | u32 tdn; |
f62b8bb8 AV |
393 | struct mlx5_core_mr mr; |
394 | ||
395 | struct mlx5e_channel **channel; | |
396 | u32 tisn[MLX5E_MAX_NUM_TC]; | |
397 | u32 rqtn; | |
398 | u32 tirn[MLX5E_NUM_TT]; | |
399 | ||
400 | struct mlx5e_flow_table ft; | |
401 | struct mlx5e_eth_addr_db eth_addr; | |
402 | struct mlx5e_vlan_db vlan; | |
403 | ||
404 | struct mlx5e_params params; | |
405 | spinlock_t async_events_spinlock; /* sync hw events */ | |
406 | struct work_struct update_carrier_work; | |
407 | struct work_struct set_rx_mode_work; | |
408 | struct delayed_work update_stats_work; | |
409 | ||
410 | struct mlx5_core_dev *mdev; | |
411 | struct net_device *netdev; | |
412 | struct mlx5e_stats stats; | |
413 | }; | |
414 | ||
415 | #define MLX5E_NET_IP_ALIGN 2 | |
416 | ||
417 | struct mlx5e_tx_wqe { | |
418 | struct mlx5_wqe_ctrl_seg ctrl; | |
419 | struct mlx5_wqe_eth_seg eth; | |
420 | }; | |
421 | ||
422 | struct mlx5e_rx_wqe { | |
423 | struct mlx5_wqe_srq_next_seg next; | |
424 | struct mlx5_wqe_data_seg data; | |
425 | }; | |
426 | ||
427 | enum mlx5e_link_mode { | |
428 | MLX5E_1000BASE_CX_SGMII = 0, | |
429 | MLX5E_1000BASE_KX = 1, | |
430 | MLX5E_10GBASE_CX4 = 2, | |
431 | MLX5E_10GBASE_KX4 = 3, | |
432 | MLX5E_10GBASE_KR = 4, | |
433 | MLX5E_20GBASE_KR2 = 5, | |
434 | MLX5E_40GBASE_CR4 = 6, | |
435 | MLX5E_40GBASE_KR4 = 7, | |
436 | MLX5E_56GBASE_R4 = 8, | |
437 | MLX5E_10GBASE_CR = 12, | |
438 | MLX5E_10GBASE_SR = 13, | |
439 | MLX5E_10GBASE_ER = 14, | |
440 | MLX5E_40GBASE_SR4 = 15, | |
441 | MLX5E_40GBASE_LR4 = 16, | |
442 | MLX5E_100GBASE_CR4 = 20, | |
443 | MLX5E_100GBASE_SR4 = 21, | |
444 | MLX5E_100GBASE_KR4 = 22, | |
445 | MLX5E_100GBASE_LR4 = 23, | |
446 | MLX5E_100BASE_TX = 24, | |
447 | MLX5E_100BASE_T = 25, | |
448 | MLX5E_10GBASE_T = 26, | |
449 | MLX5E_25GBASE_CR = 27, | |
450 | MLX5E_25GBASE_KR = 28, | |
451 | MLX5E_25GBASE_SR = 29, | |
452 | MLX5E_50GBASE_CR2 = 30, | |
453 | MLX5E_50GBASE_KR2 = 31, | |
454 | MLX5E_LINK_MODES_NUMBER, | |
455 | }; | |
456 | ||
457 | #define MLX5E_PROT_MASK(link_mode) (1 << link_mode) | |
458 | ||
12be4b21 | 459 | void mlx5e_send_nop(struct mlx5e_sq *sq, bool notify_hw); |
f62b8bb8 AV |
460 | u16 mlx5e_select_queue(struct net_device *dev, struct sk_buff *skb, |
461 | void *accel_priv, select_queue_fallback_t fallback); | |
462 | netdev_tx_t mlx5e_xmit(struct sk_buff *skb, struct net_device *dev); | |
f62b8bb8 AV |
463 | |
464 | void mlx5e_completion_event(struct mlx5_core_cq *mcq); | |
465 | void mlx5e_cq_error_event(struct mlx5_core_cq *mcq, enum mlx5_event event); | |
466 | int mlx5e_napi_poll(struct napi_struct *napi, int budget); | |
467 | bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq); | |
468 | bool mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget); | |
469 | bool mlx5e_post_rx_wqes(struct mlx5e_rq *rq); | |
470 | struct mlx5_cqe64 *mlx5e_get_cqe(struct mlx5e_cq *cq); | |
471 | ||
472 | void mlx5e_update_stats(struct mlx5e_priv *priv); | |
473 | ||
474 | int mlx5e_open_flow_table(struct mlx5e_priv *priv); | |
475 | void mlx5e_close_flow_table(struct mlx5e_priv *priv); | |
476 | void mlx5e_init_eth_addr(struct mlx5e_priv *priv); | |
477 | void mlx5e_set_rx_mode_core(struct mlx5e_priv *priv); | |
478 | void mlx5e_set_rx_mode_work(struct work_struct *work); | |
479 | ||
480 | int mlx5e_vlan_rx_add_vid(struct net_device *dev, __always_unused __be16 proto, | |
481 | u16 vid); | |
482 | int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto, | |
483 | u16 vid); | |
484 | void mlx5e_enable_vlan_filter(struct mlx5e_priv *priv); | |
485 | void mlx5e_disable_vlan_filter(struct mlx5e_priv *priv); | |
486 | int mlx5e_add_all_vlan_rules(struct mlx5e_priv *priv); | |
487 | void mlx5e_del_all_vlan_rules(struct mlx5e_priv *priv); | |
488 | ||
489 | int mlx5e_open_locked(struct net_device *netdev); | |
490 | int mlx5e_close_locked(struct net_device *netdev); | |
491 | int mlx5e_update_priv_params(struct mlx5e_priv *priv, | |
492 | struct mlx5e_params *new_params); | |
493 | ||
494 | static inline void mlx5e_tx_notify_hw(struct mlx5e_sq *sq, | |
495 | struct mlx5e_tx_wqe *wqe) | |
496 | { | |
497 | /* ensure wqe is visible to device before updating doorbell record */ | |
498 | dma_wmb(); | |
499 | ||
500 | *sq->wq.db = cpu_to_be32(sq->pc); | |
501 | ||
502 | /* ensure doorbell record is visible to device before ringing the | |
503 | * doorbell | |
504 | */ | |
505 | wmb(); | |
506 | ||
507 | mlx5_write64((__be32 *)&wqe->ctrl, | |
508 | sq->uar_map + MLX5_BF_OFFSET + sq->bf_offset, | |
509 | NULL); | |
510 | ||
511 | sq->bf_offset ^= sq->bf_buf_size; | |
512 | } | |
513 | ||
514 | static inline void mlx5e_cq_arm(struct mlx5e_cq *cq) | |
515 | { | |
516 | struct mlx5_core_cq *mcq; | |
517 | ||
518 | mcq = &cq->mcq; | |
519 | mlx5_cq_arm(mcq, MLX5_CQ_DB_REQ_NOT, mcq->uar->map, NULL, cq->wq.cc); | |
520 | } | |
521 | ||
522 | extern const struct ethtool_ops mlx5e_ethtool_ops; |