1 /*
2 * Copyright (c) 2007 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
34 #ifndef _MLX4_EN_H_
35 #define _MLX4_EN_H_
36
37 #include <linux/bitops.h>
38 #include <linux/compiler.h>
39 #include <linux/ethtool.h>
40 #include <linux/list.h>
41 #include <linux/mutex.h>
42 #include <linux/netdevice.h>
43 #include <linux/if_vlan.h>
44 #include <linux/net_tstamp.h>
45 #ifdef CONFIG_MLX4_EN_DCB
46 #include <linux/dcbnl.h>
47 #endif
48 #include <linux/cpu_rmap.h>
49 #include <linux/ptp_clock_kernel.h>
50 #include <linux/irq.h>
51 #include <net/xdp.h>
52 #include <linux/notifier.h>
53
54 #include <linux/mlx4/device.h>
55 #include <linux/mlx4/qp.h>
56 #include <linux/mlx4/cq.h>
57 #include <linux/mlx4/srq.h>
58 #include <linux/mlx4/doorbell.h>
59 #include <linux/mlx4/cmd.h>
60
61 #include "en_port.h"
62 #include "mlx4_stats.h"
63
64 #define DRV_NAME "mlx4_en"
65 #define DRV_VERSION "4.0-0"
66
67 #define MLX4_EN_MSG_LEVEL (NETIF_MSG_LINK | NETIF_MSG_IFDOWN)
68
69 /*
70 * Device constants
71 */
72
73
74 #define MLX4_EN_PAGE_SHIFT 12
75 #define MLX4_EN_PAGE_SIZE (1 << MLX4_EN_PAGE_SHIFT)
76 #define DEF_RX_RINGS 16
77 #define MAX_RX_RINGS 128
78 #define MIN_RX_RINGS 1
79 #define LOG_TXBB_SIZE 6
80 #define TXBB_SIZE BIT(LOG_TXBB_SIZE)
81 #define HEADROOM (2048 / TXBB_SIZE + 1)
82 #define STAMP_STRIDE 64
83 #define STAMP_DWORDS (STAMP_STRIDE / 4)
84 #define STAMP_SHIFT 31
85 #define STAMP_VAL 0x7fffffff
86 #define STATS_DELAY (HZ / 4)
87 #define SERVICE_TASK_DELAY (HZ / 4)
88 #define MAX_NUM_OF_FS_RULES 256
89
90 #define MLX4_EN_FILTER_HASH_SHIFT 4
91 #define MLX4_EN_FILTER_EXPIRY_QUOTA 60
92
93 #define CTRL_SIZE sizeof(struct mlx4_wqe_ctrl_seg)
94 #define DS_SIZE sizeof(struct mlx4_wqe_data_seg)
95
96 /* Maximal size of the bounce buffer:
97 * 256 bytes for LSO headers.
98 * CTRL_SIZE for control desc.
99 * DS_SIZE if skb->head contains some payload.
100 * MAX_SKB_FRAGS frags.
101 */
102 #define MLX4_TX_BOUNCE_BUFFER_SIZE \
103 ALIGN(256 + CTRL_SIZE + DS_SIZE + MAX_SKB_FRAGS * DS_SIZE, TXBB_SIZE)
104
105 #define MLX4_MAX_DESC_TXBBS (MLX4_TX_BOUNCE_BUFFER_SIZE / TXBB_SIZE)
106
107 /*
108 * OS related constants and tunables
109 */
110
111 #define MLX4_EN_PRIV_FLAGS_BLUEFLAME 1
112 #define MLX4_EN_PRIV_FLAGS_PHV 2
113
114 #define MLX4_EN_WATCHDOG_TIMEOUT (15 * HZ)
115
116 /* Use the maximum between 16384 and a single page */
117 #define MLX4_EN_ALLOC_SIZE PAGE_ALIGN(16384)
118
119 #define MLX4_EN_MAX_RX_FRAGS 4
120
121 /* Maximum ring sizes */
122 #define MLX4_EN_MAX_TX_SIZE 8192
123 #define MLX4_EN_MAX_RX_SIZE 8192
124
125 /* Minimum ring size for our page-allocation scheme to work */
126 #define MLX4_EN_MIN_RX_SIZE (MLX4_EN_ALLOC_SIZE / SMP_CACHE_BYTES)
127 #define MLX4_EN_MIN_TX_SIZE (4096 / TXBB_SIZE)
128
129 #define MLX4_EN_SMALL_PKT_SIZE 64
130 #define MLX4_EN_MIN_TX_RING_P_UP 1
131 #define MLX4_EN_MAX_TX_RING_P_UP 32
132 #define MLX4_EN_NUM_UP_LOW 1
133 #define MLX4_EN_NUM_UP_HIGH 8
134 #define MLX4_EN_DEF_RX_RING_SIZE 1024
135 #define MLX4_EN_DEF_TX_RING_SIZE MLX4_EN_DEF_RX_RING_SIZE
136 #define MAX_TX_RINGS (MLX4_EN_MAX_TX_RING_P_UP * \
137 MLX4_EN_NUM_UP_HIGH)
138
139 #define MLX4_EN_DEFAULT_TX_WORK 256
140
141 /* Target number of packets to coalesce with interrupt moderation */
142 #define MLX4_EN_RX_COAL_TARGET 44
143 #define MLX4_EN_RX_COAL_TIME 0x10
144
145 #define MLX4_EN_TX_COAL_PKTS 16
146 #define MLX4_EN_TX_COAL_TIME 0x10
147
148 #define MLX4_EN_MAX_COAL_PKTS U16_MAX
149 #define MLX4_EN_MAX_COAL_TIME U16_MAX
150
151 #define MLX4_EN_RX_RATE_LOW 400000
152 #define MLX4_EN_RX_COAL_TIME_LOW 0
153 #define MLX4_EN_RX_RATE_HIGH 450000
154 #define MLX4_EN_RX_COAL_TIME_HIGH 128
155 #define MLX4_EN_RX_SIZE_THRESH 1024
156 #define MLX4_EN_RX_RATE_THRESH (1000000 / MLX4_EN_RX_COAL_TIME_HIGH)
157 #define MLX4_EN_SAMPLE_INTERVAL 0
158 #define MLX4_EN_AVG_PKT_SMALL 256
159
160 #define MLX4_EN_AUTO_CONF 0xffff
161
162 #define MLX4_EN_DEF_RX_PAUSE 1
163 #define MLX4_EN_DEF_TX_PAUSE 1
164
165 /* Interval between successive polls in the Tx routine when polling is used
166 instead of interrupts (in per-core Tx rings) - should be power of 2 */
167 #define MLX4_EN_TX_POLL_MODER 16
168 #define MLX4_EN_TX_POLL_TIMEOUT (HZ / 4)
169
170 #define SMALL_PACKET_SIZE (256 - NET_IP_ALIGN)
171 #define HEADER_COPY_SIZE (128 - NET_IP_ALIGN)
172 #define MLX4_LOOPBACK_TEST_PAYLOAD (HEADER_COPY_SIZE - ETH_HLEN)
173 #define PREAMBLE_LEN 8
174 #define MLX4_SELFTEST_LB_MIN_MTU (MLX4_LOOPBACK_TEST_PAYLOAD + NET_IP_ALIGN + \
175 ETH_HLEN + PREAMBLE_LEN)
176
177 /* VLAN_HLEN is added twice,to support skb vlan tagged with multiple
178 * headers. (For example: ETH_P_8021Q and ETH_P_8021AD).
179 */
180 #define MLX4_EN_EFF_MTU(mtu) ((mtu) + ETH_HLEN + (2 * VLAN_HLEN))
181 #define ETH_BCAST 0xffffffffffffULL
182
183 #define MLX4_EN_LOOPBACK_RETRIES 5
184 #define MLX4_EN_LOOPBACK_TIMEOUT 100
185
186 /* Constants for TX flow */
187 enum {
188 MAX_INLINE = 104, /* 128 - 16 - 4 - 4 */
189 MAX_BF = 256,
190 MIN_PKT_LEN = 17,
191 };
192
193 /*
194 * Configurables
195 */
196
197 enum cq_type {
198 /* keep tx types first */
199 TX,
200 TX_XDP,
201 #define MLX4_EN_NUM_TX_TYPES (TX_XDP + 1)
202 RX,
203 };
204
205
206 /*
207 * Useful macros
208 */
209 #define ROUNDUP_LOG2(x) ilog2(roundup_pow_of_two(x))
210 #define XNOR(x, y) (!(x) == !(y))
211
212
213 struct mlx4_en_tx_info {
214 union {
215 struct sk_buff *skb;
216 struct page *page;
217 };
218 dma_addr_t map0_dma;
219 u32 map0_byte_count;
220 u32 nr_txbb;
221 u32 nr_bytes;
222 u8 linear;
223 u8 data_offset;
224 u8 inl;
225 u8 ts_requested;
226 u8 nr_maps;
227 } ____cacheline_aligned_in_smp;
228
229
230 #define MLX4_EN_BIT_DESC_OWN 0x80000000
231 #define MLX4_EN_MEMTYPE_PAD 0x100
232
233
234 struct mlx4_en_tx_desc {
235 struct mlx4_wqe_ctrl_seg ctrl;
236 union {
237 struct mlx4_wqe_data_seg data; /* at least one data segment */
238 struct mlx4_wqe_lso_seg lso;
239 struct mlx4_wqe_inline_seg inl;
240 };
241 };
242
243 #define MLX4_EN_USE_SRQ 0x01000000
244
245 #define MLX4_EN_CX3_LOW_ID 0x1000
246 #define MLX4_EN_CX3_HIGH_ID 0x1005
247
248 struct mlx4_en_rx_alloc {
249 struct page *page;
250 dma_addr_t dma;
251 u32 page_offset;
252 };
253
254 #define MLX4_EN_CACHE_SIZE (2 * NAPI_POLL_WEIGHT)
255
256 struct mlx4_en_page_cache {
257 u32 index;
258 struct {
259 struct page *page;
260 dma_addr_t dma;
261 } buf[MLX4_EN_CACHE_SIZE];
262 };
263
264 enum {
265 MLX4_EN_TX_RING_STATE_RECOVERING,
266 };
267
268 struct mlx4_en_priv;
269
270 struct mlx4_en_tx_ring {
271 /* cache line used and dirtied in tx completion
272 * (mlx4_en_free_tx_buf())
273 */
274 u32 last_nr_txbb;
275 u32 cons;
276 unsigned long wake_queue;
277 struct netdev_queue *tx_queue;
278 u32 (*free_tx_desc)(struct mlx4_en_priv *priv,
279 struct mlx4_en_tx_ring *ring,
280 int index,
281 u64 timestamp, int napi_mode);
282 struct mlx4_en_rx_ring *recycle_ring;
283
284 /* cache line used and dirtied in mlx4_en_xmit() */
285 u32 prod ____cacheline_aligned_in_smp;
286 unsigned int tx_dropped;
287 unsigned long bytes;
288 unsigned long packets;
289 unsigned long tx_csum;
290 unsigned long tso_packets;
291 unsigned long xmit_more;
292 struct mlx4_bf bf;
293
294 /* Following part should be mostly read */
295 void __iomem *doorbell_address;
296 __be32 doorbell_qpn;
297 __be32 mr_key;
298 u32 size; /* number of TXBBs */
299 u32 size_mask;
300 u32 full_size;
301 u32 buf_size;
302 void *buf;
303 struct mlx4_en_tx_info *tx_info;
304 int qpn;
305 u8 queue_index;
306 bool bf_enabled;
307 bool bf_alloced;
308 u8 hwtstamp_tx_type;
309 u8 *bounce_buf;
310
311 /* Not used in fast path
312 * Only queue_stopped might be used if BQL is not properly working.
313 */
314 unsigned long queue_stopped;
315 unsigned long state;
316 struct mlx4_hwq_resources sp_wqres;
317 struct mlx4_qp sp_qp;
318 struct mlx4_qp_context sp_context;
319 cpumask_t sp_affinity_mask;
320 enum mlx4_qp_state sp_qp_state;
321 u16 sp_stride;
322 u16 sp_cqn; /* index of port CQ associated with this ring */
323 } ____cacheline_aligned_in_smp;
324
325 struct mlx4_en_rx_desc {
326 /* actual number of entries depends on rx ring stride */
327 DECLARE_FLEX_ARRAY(struct mlx4_wqe_data_seg, data);
328 };
329
330 struct mlx4_en_rx_ring {
331 struct mlx4_hwq_resources wqres;
332 u32 size ; /* number of Rx descs*/
333 u32 actual_size;
334 u32 size_mask;
335 u16 stride;
336 u16 log_stride;
337 u16 cqn; /* index of port CQ associated with this ring */
338 u32 prod;
339 u32 cons;
340 u32 buf_size;
341 u8 fcs_del;
342 void *buf;
343 void *rx_info;
344 struct bpf_prog __rcu *xdp_prog;
345 struct mlx4_en_page_cache page_cache;
346 unsigned long bytes;
347 unsigned long packets;
348 unsigned long csum_ok;
349 unsigned long csum_none;
350 unsigned long csum_complete;
351 unsigned long rx_alloc_pages;
352 unsigned long xdp_drop;
353 unsigned long xdp_redirect;
354 unsigned long xdp_redirect_fail;
355 unsigned long xdp_tx;
356 unsigned long xdp_tx_full;
357 unsigned long dropped;
358 int hwtstamp_rx_filter;
359 cpumask_var_t affinity_mask;
360 struct xdp_rxq_info xdp_rxq;
361 };
362
363 struct mlx4_en_cq {
364 struct mlx4_cq mcq;
365 struct mlx4_hwq_resources wqres;
366 int ring;
367 struct net_device *dev;
368 union {
369 struct napi_struct napi;
370 bool xdp_busy;
371 };
372 int size;
373 int buf_size;
374 int vector;
375 enum cq_type type;
376 u16 moder_time;
377 u16 moder_cnt;
378 struct mlx4_cqe *buf;
379 #define MLX4_EN_OPCODE_ERROR 0x1e
380
381 const struct cpumask *aff_mask;
382 };
383
384 struct mlx4_en_port_profile {
385 u32 flags;
386 u32 tx_ring_num[MLX4_EN_NUM_TX_TYPES];
387 u32 rx_ring_num;
388 u32 tx_ring_size;
389 u32 rx_ring_size;
390 u8 num_tx_rings_p_up;
391 u8 rx_pause;
392 u8 rx_ppp;
393 u8 tx_pause;
394 u8 tx_ppp;
395 u8 num_up;
396 int rss_rings;
397 int inline_thold;
398 struct hwtstamp_config hwtstamp_config;
399 };
400
401 struct mlx4_en_profile {
402 int udp_rss;
403 u8 rss_mask;
404 u32 active_ports;
405 u32 small_pkt_int;
406 u8 no_reset;
407 u8 max_num_tx_rings_p_up;
408 struct mlx4_en_port_profile prof[MLX4_MAX_PORTS + 1];
409 };
410
411 struct mlx4_en_dev {
412 struct mlx4_dev *dev;
413 struct pci_dev *pdev;
414 struct mutex state_lock;
415 struct net_device *pndev[MLX4_MAX_PORTS + 1];
416 struct net_device *upper[MLX4_MAX_PORTS + 1];
417 u32 port_cnt;
418 bool device_up;
419 struct mlx4_en_profile profile;
420 u32 LSO_support;
421 struct workqueue_struct *workqueue;
422 struct device *dma_device;
423 void __iomem *uar_map;
424 struct mlx4_uar priv_uar;
425 struct mlx4_mr mr;
426 u32 priv_pdn;
427 spinlock_t uar_lock;
428 u8 mac_removed[MLX4_MAX_PORTS + 1];
429 u32 nominal_c_mult;
430 struct cyclecounter cycles;
431 seqlock_t clock_lock;
432 struct timecounter clock;
433 unsigned long last_overflow_check;
434 struct ptp_clock *ptp_clock;
435 struct ptp_clock_info ptp_clock_info;
436 struct notifier_block netdev_nb;
437 struct notifier_block mlx_nb;
438 };
439
440
441 struct mlx4_en_rss_map {
442 int base_qpn;
443 struct mlx4_qp qps[MAX_RX_RINGS];
444 enum mlx4_qp_state state[MAX_RX_RINGS];
445 struct mlx4_qp *indir_qp;
446 enum mlx4_qp_state indir_state;
447 };
448
449 enum mlx4_en_port_flag {
450 MLX4_EN_PORT_ANC = 1<<0, /* Auto-negotiation complete */
451 MLX4_EN_PORT_ANE = 1<<1, /* Auto-negotiation enabled */
452 };
453
454 struct mlx4_en_port_state {
455 int link_state;
456 int link_speed;
457 int transceiver;
458 u32 flags;
459 };
460
461 enum mlx4_en_mclist_act {
462 MCLIST_NONE,
463 MCLIST_REM,
464 MCLIST_ADD,
465 };
466
467 struct mlx4_en_mc_list {
468 struct list_head list;
469 enum mlx4_en_mclist_act action;
470 u8 addr[ETH_ALEN];
471 u64 reg_id;
472 u64 tunnel_reg_id;
473 };
474
475 struct mlx4_en_frag_info {
476 u16 frag_size;
477 u32 frag_stride;
478 };
479
480 #ifdef CONFIG_MLX4_EN_DCB
481 /* Minimal TC BW - setting to 0 will block traffic */
482 #define MLX4_EN_BW_MIN 1
483 #define MLX4_EN_BW_MAX 100 /* Utilize 100% of the line */
484
485 #define MLX4_EN_TC_VENDOR 0
486 #define MLX4_EN_TC_ETS 7
487
488 enum dcb_pfc_type {
489 pfc_disabled = 0,
490 pfc_enabled_full,
491 pfc_enabled_tx,
492 pfc_enabled_rx
493 };
494
495 struct mlx4_en_cee_config {
496 bool pfc_state;
497 enum dcb_pfc_type dcb_pfc[MLX4_EN_NUM_UP_HIGH];
498 };
499 #endif
500
501 struct ethtool_flow_id {
502 struct list_head list;
503 struct ethtool_rx_flow_spec flow_spec;
504 u64 id;
505 };
506
507 enum {
508 MLX4_EN_FLAG_PROMISC = (1 << 0),
509 MLX4_EN_FLAG_MC_PROMISC = (1 << 1),
510 /* whether we need to enable hardware loopback by putting dmac
511 * in Tx WQE
512 */
513 MLX4_EN_FLAG_ENABLE_HW_LOOPBACK = (1 << 2),
514 /* whether we need to drop packets that hardware loopback-ed */
515 MLX4_EN_FLAG_RX_FILTER_NEEDED = (1 << 3),
516 MLX4_EN_FLAG_FORCE_PROMISC = (1 << 4),
517 MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP = (1 << 5),
518 #ifdef CONFIG_MLX4_EN_DCB
519 MLX4_EN_FLAG_DCB_ENABLED = (1 << 6),
520 #endif
521 };
522
523 #define PORT_BEACON_MAX_LIMIT (65535)
524 #define MLX4_EN_MAC_HASH_SIZE (1 << BITS_PER_BYTE)
525 #define MLX4_EN_MAC_HASH_IDX 5
526
527 struct mlx4_en_stats_bitmap {
528 DECLARE_BITMAP(bitmap, NUM_ALL_STATS);
529 struct mutex mutex; /* for mutual access to stats bitmap */
530 };
531
532 enum {
533 MLX4_EN_STATE_FLAG_RESTARTING,
534 };
535
536 struct mlx4_en_priv {
537 struct mlx4_en_dev *mdev;
538 struct mlx4_en_port_profile *prof;
539 struct net_device *dev;
540 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
541 struct mlx4_en_port_state port_state;
542 spinlock_t stats_lock;
543 struct ethtool_flow_id ethtool_rules[MAX_NUM_OF_FS_RULES];
544 /* To allow rules removal while port is going down */
545 struct list_head ethtool_list;
546
547 unsigned long last_moder_packets[MAX_RX_RINGS];
548 unsigned long last_moder_tx_packets;
549 unsigned long last_moder_bytes[MAX_RX_RINGS];
550 unsigned long last_moder_jiffies;
551 int last_moder_time[MAX_RX_RINGS];
552 u16 rx_usecs;
553 u16 rx_frames;
554 u16 tx_usecs;
555 u16 tx_frames;
556 u32 pkt_rate_low;
557 u16 rx_usecs_low;
558 u32 pkt_rate_high;
559 u16 rx_usecs_high;
560 u32 sample_interval;
561 u32 adaptive_rx_coal;
562 u32 msg_enable;
563 u32 loopback_ok;
564 u32 validate_loopback;
565
566 struct mlx4_hwq_resources res;
567 int link_state;
568 bool port_up;
569 int port;
570 int registered;
571 int allocated;
572 int stride;
573 unsigned char current_mac[ETH_ALEN + 2];
574 int mac_index;
575 unsigned max_mtu;
576 int base_qpn;
577 int cqe_factor;
578 int cqe_size;
579
580 struct mlx4_en_rss_map rss_map;
581 __be32 ctrl_flags;
582 u32 flags;
583 u8 num_tx_rings_p_up;
584 u32 tx_work_limit;
585 u32 tx_ring_num[MLX4_EN_NUM_TX_TYPES];
586 u32 rx_ring_num;
587 u32 rx_skb_size;
588 struct mlx4_en_frag_info frag_info[MLX4_EN_MAX_RX_FRAGS];
589 u8 num_frags;
590 u8 log_rx_info;
591 u8 dma_dir;
592 u16 rx_headroom;
593
594 struct mlx4_en_tx_ring **tx_ring[MLX4_EN_NUM_TX_TYPES];
595 struct mlx4_en_rx_ring *rx_ring[MAX_RX_RINGS];
596 struct mlx4_en_cq **tx_cq[MLX4_EN_NUM_TX_TYPES];
597 struct mlx4_en_cq *rx_cq[MAX_RX_RINGS];
598 struct mlx4_qp drop_qp;
599 struct work_struct rx_mode_task;
600 struct work_struct restart_task;
601 struct work_struct linkstate_task;
602 struct delayed_work stats_task;
603 struct delayed_work service_task;
604 struct mlx4_en_pkt_stats pkstats;
605 struct mlx4_en_counter_stats pf_stats;
606 struct mlx4_en_flow_stats_rx rx_priority_flowstats[MLX4_NUM_PRIORITIES];
607 struct mlx4_en_flow_stats_tx tx_priority_flowstats[MLX4_NUM_PRIORITIES];
608 struct mlx4_en_flow_stats_rx rx_flowstats;
609 struct mlx4_en_flow_stats_tx tx_flowstats;
610 struct mlx4_en_port_stats port_stats;
611 struct mlx4_en_xdp_stats xdp_stats;
612 struct mlx4_en_phy_stats phy_stats;
613 struct mlx4_en_stats_bitmap stats_bitmap;
614 struct list_head mc_list;
615 struct list_head curr_list;
616 u64 broadcast_id;
617 struct mlx4_en_stat_out_mbox hw_stats;
618 int vids[128];
619 bool wol;
620 struct device *ddev;
621 struct hlist_head mac_hash[MLX4_EN_MAC_HASH_SIZE];
622 struct hwtstamp_config hwtstamp_config;
623 u32 counter_index;
624
625 #ifdef CONFIG_MLX4_EN_DCB
626 #define MLX4_EN_DCB_ENABLED 0x3
627 struct ieee_ets ets;
628 u16 maxrate[IEEE_8021QAZ_MAX_TCS];
629 enum dcbnl_cndd_states cndd_state[IEEE_8021QAZ_MAX_TCS];
630 struct mlx4_en_cee_config cee_config;
631 u8 dcbx_cap;
632 #endif
633 #ifdef CONFIG_RFS_ACCEL
634 spinlock_t filters_lock;
635 int last_filter_id;
636 struct list_head filters;
637 struct hlist_head filter_hash[1 << MLX4_EN_FILTER_HASH_SHIFT];
638 #endif
639 u64 tunnel_reg_id;
640 __be16 vxlan_port;
641
642 u32 pflags;
643 u8 rss_key[MLX4_EN_RSS_KEY_SIZE];
644 u8 rss_hash_fn;
645 unsigned long state;
646 };
647
648 enum mlx4_en_wol {
649 MLX4_EN_WOL_MAGIC = (1ULL << 61),
650 MLX4_EN_WOL_ENABLED = (1ULL << 62),
651 };
652
653 struct mlx4_mac_entry {
654 struct hlist_node hlist;
655 unsigned char mac[ETH_ALEN + 2];
656 u64 reg_id;
657 struct rcu_head rcu;
658 };
659
mlx4_en_get_cqe(void * buf,int idx,int cqe_sz)660 static inline struct mlx4_cqe *mlx4_en_get_cqe(void *buf, int idx, int cqe_sz)
661 {
662 return buf + idx * cqe_sz;
663 }
664
665 #define MLX4_EN_WOL_DO_MODIFY (1ULL << 63)
666
667 void mlx4_en_init_ptys2ethtool_map(void);
668 void mlx4_en_update_loopback_state(struct net_device *dev,
669 netdev_features_t features);
670
671 void mlx4_en_destroy_netdev(struct net_device *dev);
672 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
673 struct mlx4_en_port_profile *prof);
674
675 int mlx4_en_start_port(struct net_device *dev);
676 void mlx4_en_stop_port(struct net_device *dev, int detach);
677
678 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
679 struct mlx4_en_stats_bitmap *stats_bitmap,
680 u8 rx_ppp, u8 rx_pause,
681 u8 tx_ppp, u8 tx_pause);
682
683 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
684 struct mlx4_en_priv *tmp,
685 struct mlx4_en_port_profile *prof,
686 bool carry_xdp_prog);
687 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
688 struct mlx4_en_priv *tmp);
689
690 int mlx4_en_create_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq **pcq,
691 int entries, int ring, enum cq_type mode, int node);
692 void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq **pcq);
693 int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
694 int cq_idx);
695 void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
696 int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
697 void mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
698
699 void mlx4_en_tx_irq(struct mlx4_cq *mcq);
700 u16 mlx4_en_select_queue(struct net_device *dev, struct sk_buff *skb,
701 struct net_device *sb_dev);
702 netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev);
703 netdev_tx_t mlx4_en_xmit_frame(struct mlx4_en_rx_ring *rx_ring,
704 struct mlx4_en_rx_alloc *frame,
705 struct mlx4_en_priv *priv, unsigned int length,
706 int tx_ind, bool *doorbell_pending);
707 void mlx4_en_xmit_doorbell(struct mlx4_en_tx_ring *ring);
708 bool mlx4_en_rx_recycle(struct mlx4_en_rx_ring *ring,
709 struct mlx4_en_rx_alloc *frame);
710
711 int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
712 struct mlx4_en_tx_ring **pring,
713 u32 size, u16 stride,
714 int node, int queue_index);
715 void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv,
716 struct mlx4_en_tx_ring **pring);
717 void mlx4_en_init_tx_xdp_ring_descs(struct mlx4_en_priv *priv,
718 struct mlx4_en_tx_ring *ring);
719 int mlx4_en_activate_tx_ring(struct mlx4_en_priv *priv,
720 struct mlx4_en_tx_ring *ring,
721 int cq, int user_prio);
722 void mlx4_en_deactivate_tx_ring(struct mlx4_en_priv *priv,
723 struct mlx4_en_tx_ring *ring);
724 void mlx4_en_set_num_rx_rings(struct mlx4_en_dev *mdev);
725 void mlx4_en_recover_from_oom(struct mlx4_en_priv *priv);
726 int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
727 struct mlx4_en_rx_ring **pring,
728 u32 size, u16 stride, int node, int queue_index);
729 void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv,
730 struct mlx4_en_rx_ring **pring,
731 u32 size, u16 stride);
732 int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv);
733 void mlx4_en_deactivate_rx_ring(struct mlx4_en_priv *priv,
734 struct mlx4_en_rx_ring *ring);
735 int mlx4_en_process_rx_cq(struct net_device *dev,
736 struct mlx4_en_cq *cq,
737 int budget);
738 int mlx4_en_poll_rx_cq(struct napi_struct *napi, int budget);
739 int mlx4_en_poll_tx_cq(struct napi_struct *napi, int budget);
740 int mlx4_en_process_tx_cq(struct net_device *dev,
741 struct mlx4_en_cq *cq, int napi_budget);
742 u32 mlx4_en_free_tx_desc(struct mlx4_en_priv *priv,
743 struct mlx4_en_tx_ring *ring,
744 int index, u64 timestamp,
745 int napi_mode);
746 u32 mlx4_en_recycle_tx_desc(struct mlx4_en_priv *priv,
747 struct mlx4_en_tx_ring *ring,
748 int index, u64 timestamp,
749 int napi_mode);
750 void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
751 int is_tx, int rss, int qpn, int cqn, int user_prio,
752 struct mlx4_qp_context *context);
753 void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event);
754 int mlx4_en_change_mcast_lb(struct mlx4_en_priv *priv, struct mlx4_qp *qp,
755 int loopback);
756 void mlx4_en_calc_rx_buf(struct net_device *dev);
757 int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv);
758 void mlx4_en_release_rss_steer(struct mlx4_en_priv *priv);
759 int mlx4_en_create_drop_qp(struct mlx4_en_priv *priv);
760 void mlx4_en_destroy_drop_qp(struct mlx4_en_priv *priv);
761 int mlx4_en_free_tx_buf(struct net_device *dev, struct mlx4_en_tx_ring *ring);
762 void mlx4_en_rx_irq(struct mlx4_cq *mcq);
763
764 int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port, u64 mac, u64 clear, u8 mode);
765 int mlx4_SET_VLAN_FLTR(struct mlx4_dev *dev, struct mlx4_en_priv *priv);
766
767 void mlx4_en_fold_software_stats(struct net_device *dev);
768 int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset);
769 int mlx4_en_QUERY_PORT(struct mlx4_en_dev *mdev, u8 port);
770
771 #ifdef CONFIG_MLX4_EN_DCB
772 extern const struct dcbnl_rtnl_ops mlx4_en_dcbnl_ops;
773 extern const struct dcbnl_rtnl_ops mlx4_en_dcbnl_pfc_ops;
774 #endif
775
776 int mlx4_en_setup_tc(struct net_device *dev, u8 up);
777 int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc);
778
779 #ifdef CONFIG_RFS_ACCEL
780 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv);
781 #endif
782
783 #define MLX4_EN_NUM_SELF_TEST 5
784 void mlx4_en_ex_selftest(struct net_device *dev, u32 *flags, u64 *buf);
785 void mlx4_en_ptp_overflow_check(struct mlx4_en_dev *mdev);
786
787 #define DEV_FEATURE_CHANGED(dev, new_features, feature) \
788 ((dev->features & feature) ^ (new_features & feature))
789
790 int mlx4_en_moderation_update(struct mlx4_en_priv *priv);
791 int mlx4_en_reset_config(struct net_device *dev,
792 struct hwtstamp_config ts_config,
793 netdev_features_t new_features);
794 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
795 struct mlx4_en_stats_bitmap *stats_bitmap,
796 u8 rx_ppp, u8 rx_pause,
797 u8 tx_ppp, u8 tx_pause);
798 int mlx4_en_netdev_event(struct notifier_block *this,
799 unsigned long event, void *ptr);
800
801 struct xdp_md;
802 int mlx4_en_xdp_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp);
803 int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash,
804 enum xdp_rss_hash_type *rss_type);
805
806 /*
807 * Functions for time stamping
808 */
809 u64 mlx4_en_get_cqe_ts(struct mlx4_cqe *cqe);
810 u64 mlx4_en_get_hwtstamp(struct mlx4_en_dev *mdev, u64 timestamp);
811 void mlx4_en_fill_hwtstamps(struct mlx4_en_dev *mdev,
812 struct skb_shared_hwtstamps *hwts,
813 u64 timestamp);
814 void mlx4_en_init_timestamp(struct mlx4_en_dev *mdev);
815 void mlx4_en_remove_timestamp(struct mlx4_en_dev *mdev);
816
817 /* Globals
818 */
819 extern const struct ethtool_ops mlx4_en_ethtool_ops;
820
821
822
823 /*
824 * printk / logging functions
825 */
826
827 __printf(3, 4)
828 void en_print(const char *level, const struct mlx4_en_priv *priv,
829 const char *format, ...);
830
831 #define en_dbg(mlevel, priv, format, ...) \
832 do { \
833 if (NETIF_MSG_##mlevel & (priv)->msg_enable) \
834 en_print(KERN_DEBUG, priv, format, ##__VA_ARGS__); \
835 } while (0)
836 #define en_warn(priv, format, ...) \
837 en_print(KERN_WARNING, priv, format, ##__VA_ARGS__)
838 #define en_err(priv, format, ...) \
839 en_print(KERN_ERR, priv, format, ##__VA_ARGS__)
840 #define en_info(priv, format, ...) \
841 en_print(KERN_INFO, priv, format, ##__VA_ARGS__)
842
843 #define mlx4_err(mdev, format, ...) \
844 pr_err(DRV_NAME " %s: " format, \
845 dev_name(&(mdev)->pdev->dev), ##__VA_ARGS__)
846 #define mlx4_info(mdev, format, ...) \
847 pr_info(DRV_NAME " %s: " format, \
848 dev_name(&(mdev)->pdev->dev), ##__VA_ARGS__)
849 #define mlx4_warn(mdev, format, ...) \
850 pr_warn(DRV_NAME " %s: " format, \
851 dev_name(&(mdev)->pdev->dev), ##__VA_ARGS__)
852
853 #endif
854