2 * Copyright (c) 2015, Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
33 #include <linux/if_vlan.h>
34 #include <linux/etherdevice.h>
35 #include <linux/timecounter.h>
36 #include <linux/net_tstamp.h>
37 #include <linux/ptp_clock_kernel.h>
38 #include <linux/mlx5/driver.h>
39 #include <linux/mlx5/qp.h>
40 #include <linux/mlx5/cq.h>
41 #include <linux/mlx5/vport.h>
42 #include <linux/mlx5/transobj.h>
44 #include "mlx5_core.h"
46 #define MLX5E_MAX_NUM_TC 8
48 #define MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE 0x6
49 #define MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE 0xa
50 #define MLX5E_PARAMS_MAXIMUM_LOG_SQ_SIZE 0xd
52 #define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE 0x1
53 #define MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE 0xa
54 #define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE 0xd
56 #define MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ (64 * 1024)
57 #define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC 0x10
58 #define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS 0x20
59 #define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC 0x10
60 #define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS 0x20
61 #define MLX5E_PARAMS_DEFAULT_MIN_RX_WQES 0x80
63 #define MLX5E_LOG_INDIR_RQT_SIZE 0x7
64 #define MLX5E_INDIR_RQT_SIZE BIT(MLX5E_LOG_INDIR_RQT_SIZE)
65 #define MLX5E_MAX_NUM_CHANNELS (MLX5E_INDIR_RQT_SIZE >> 1)
66 #define MLX5E_TX_CQ_POLL_BUDGET 128
67 #define MLX5E_UPDATE_STATS_INTERVAL 200 /* msecs */
68 #define MLX5E_SQ_BF_BUDGET 16
70 #define MLX5E_NUM_MAIN_GROUPS 9
72 static const char vport_strings
[][ETH_GSTRING_LEN
] = {
73 /* vport statistics */
86 "rx_multicast_packets",
88 "tx_multicast_packets",
90 "rx_broadcast_packets",
92 "tx_broadcast_packets",
110 struct mlx5e_vport_stats
{
116 u64 rx_error_packets
;
118 u64 tx_error_packets
;
120 u64 rx_unicast_packets
;
121 u64 rx_unicast_bytes
;
122 u64 tx_unicast_packets
;
123 u64 tx_unicast_bytes
;
124 u64 rx_multicast_packets
;
125 u64 rx_multicast_bytes
;
126 u64 tx_multicast_packets
;
127 u64 tx_multicast_bytes
;
128 u64 rx_broadcast_packets
;
129 u64 rx_broadcast_bytes
;
130 u64 tx_broadcast_packets
;
131 u64 tx_broadcast_bytes
;
142 u64 tx_queue_stopped
;
144 u64 tx_queue_dropped
;
147 #define NUM_VPORT_COUNTERS 32
150 static const char pport_strings
[][ETH_GSTRING_LEN
] = {
151 /* IEEE802.3 counters */
162 "in_range_len_errors",
172 /* RFC2863 counters */
184 "out_multicast_pkts",
185 "out_broadcast_pkts",
187 /* RFC2819 counters */
208 "p8192to10239octets",
211 #define NUM_IEEE_802_3_COUNTERS 19
212 #define NUM_RFC_2863_COUNTERS 13
213 #define NUM_RFC_2819_COUNTERS 21
214 #define NUM_PPORT_COUNTERS (NUM_IEEE_802_3_COUNTERS + \
215 NUM_RFC_2863_COUNTERS + \
216 NUM_RFC_2819_COUNTERS)
218 struct mlx5e_pport_stats
{
219 __be64 IEEE_802_3_counters
[NUM_IEEE_802_3_COUNTERS
];
220 __be64 RFC_2863_counters
[NUM_RFC_2863_COUNTERS
];
221 __be64 RFC_2819_counters
[NUM_RFC_2819_COUNTERS
];
224 static const char rq_stats_strings
[][ETH_GSTRING_LEN
] = {
233 struct mlx5e_rq_stats
{
240 #define NUM_RQ_STATS 6
243 static const char sq_stats_strings
[][ETH_GSTRING_LEN
] = {
254 struct mlx5e_sq_stats
{
258 u64 csum_offload_none
;
263 #define NUM_SQ_STATS 8
267 struct mlx5e_vport_stats vport
;
268 struct mlx5e_pport_stats pport
;
271 struct mlx5e_params
{
275 u8 default_vlan_prio
;
277 u16 rx_cq_moderation_usec
;
278 u16 rx_cq_moderation_pkts
;
279 u16 tx_cq_moderation_usec
;
280 u16 tx_cq_moderation_pkts
;
286 u8 toeplitz_hash_key
[40];
287 u32 indirection_rqt
[MLX5E_INDIR_RQT_SIZE
];
290 struct mlx5e_tstamp
{
292 struct cyclecounter cycles
;
293 struct timecounter clock
;
294 struct hwtstamp_config hwtstamp_config
;
296 unsigned long overflow_period
;
297 struct delayed_work overflow_work
;
298 struct mlx5_core_dev
*mdev
;
299 struct ptp_clock
*ptp
;
300 struct ptp_clock_info ptp_info
;
304 MLX5E_RQ_STATE_POST_WQES_ENABLE
,
308 /* data path - accessed per cqe */
311 /* data path - accessed per napi poll */
312 struct napi_struct
*napi
;
313 struct mlx5_core_cq mcq
;
314 struct mlx5e_channel
*channel
;
315 struct mlx5e_priv
*priv
;
318 struct mlx5_wq_ctrl wq_ctrl
;
319 } ____cacheline_aligned_in_smp
;
323 struct mlx5_wq_ll wq
;
325 struct sk_buff
**skb
;
328 struct net_device
*netdev
;
329 struct mlx5e_tstamp
*tstamp
;
330 struct mlx5e_rq_stats stats
;
337 struct mlx5_wq_ctrl wq_ctrl
;
339 struct mlx5e_channel
*channel
;
340 struct mlx5e_priv
*priv
;
341 } ____cacheline_aligned_in_smp
;
343 struct mlx5e_tx_wqe_info
{
349 enum mlx5e_dma_map_type
{
350 MLX5E_DMA_MAP_SINGLE
,
354 struct mlx5e_sq_dma
{
357 enum mlx5e_dma_map_type type
;
361 MLX5E_SQ_STATE_WAKE_TXQ_ENABLE
,
367 /* dirtied @completion */
372 u16 pc ____cacheline_aligned_in_smp
;
377 struct mlx5e_sq_stats stats
;
381 /* pointers to per packet info: write@xmit, read@completion */
382 struct sk_buff
**skb
;
383 struct mlx5e_sq_dma
*dma_fifo
;
384 struct mlx5e_tx_wqe_info
*wqe_info
;
387 struct mlx5_wq_cyc wq
;
389 void __iomem
*uar_map
;
390 void __iomem
*uar_bf_map
;
391 struct netdev_queue
*txq
;
397 struct mlx5e_tstamp
*tstamp
;
402 struct mlx5_wq_ctrl wq_ctrl
;
404 struct mlx5e_channel
*channel
;
406 } ____cacheline_aligned_in_smp
;
408 static inline bool mlx5e_sq_has_room_for(struct mlx5e_sq
*sq
, u16 n
)
410 return (((sq
->wq
.sz_m1
& (sq
->cc
- sq
->pc
)) >= n
) ||
415 MLX5E_CHANNEL_NAPI_SCHED
= 1,
418 struct mlx5e_channel
{
421 struct mlx5e_sq sq
[MLX5E_MAX_NUM_TC
];
422 struct napi_struct napi
;
424 struct net_device
*netdev
;
430 struct mlx5e_priv
*priv
;
435 enum mlx5e_traffic_types
{
440 MLX5E_TT_IPV4_IPSEC_AH
,
441 MLX5E_TT_IPV6_IPSEC_AH
,
442 MLX5E_TT_IPV4_IPSEC_ESP
,
443 MLX5E_TT_IPV6_IPSEC_ESP
,
450 #define IS_HASHING_TT(tt) (tt != MLX5E_TT_ANY)
453 MLX5E_INDIRECTION_RQT
,
458 struct mlx5e_eth_addr_info
{
459 u8 addr
[ETH_ALEN
+ 2];
461 struct mlx5_flow_rule
*ft_rule
[MLX5E_NUM_TT
];
464 #define MLX5E_ETH_ADDR_HASH_SIZE (1 << BITS_PER_BYTE)
466 struct mlx5e_eth_addr_db
{
467 struct hlist_head netdev_uc
[MLX5E_ETH_ADDR_HASH_SIZE
];
468 struct hlist_head netdev_mc
[MLX5E_ETH_ADDR_HASH_SIZE
];
469 struct mlx5e_eth_addr_info broadcast
;
470 struct mlx5e_eth_addr_info allmulti
;
471 struct mlx5e_eth_addr_info promisc
;
472 bool broadcast_enabled
;
473 bool allmulti_enabled
;
474 bool promisc_enabled
;
478 MLX5E_STATE_ASYNC_EVENTS_ENABLE
,
480 MLX5E_STATE_DESTROYING
,
483 struct mlx5e_vlan_db
{
484 unsigned long active_vlans
[BITS_TO_LONGS(VLAN_N_VID
)];
485 struct mlx5_flow_rule
*active_vlans_rule
[VLAN_N_VID
];
486 struct mlx5_flow_rule
*untagged_rule
;
487 struct mlx5_flow_rule
*any_vlan_rule
;
488 bool filter_disabled
;
491 struct mlx5e_flow_table
{
493 struct mlx5_flow_table
*t
;
494 struct mlx5_flow_group
**g
;
497 struct mlx5e_flow_tables
{
498 struct mlx5_flow_namespace
*ns
;
499 struct mlx5e_flow_table vlan
;
500 struct mlx5e_flow_table main
;
504 /* priv data path fields - start */
505 int default_vlan_prio
;
506 struct mlx5e_sq
**txq_to_sq_map
;
507 int channeltc_to_txq_map
[MLX5E_MAX_NUM_CHANNELS
][MLX5E_MAX_NUM_TC
];
508 /* priv data path fields - end */
511 struct mutex state_lock
; /* Protects Interface state */
512 struct mlx5_uar cq_uar
;
515 struct mlx5_core_mr mr
;
516 struct mlx5e_rq drop_rq
;
518 struct mlx5e_channel
**channel
;
519 u32 tisn
[MLX5E_MAX_NUM_TC
];
520 u32 rqtn
[MLX5E_NUM_RQT
];
521 u32 tirn
[MLX5E_NUM_TT
];
523 struct mlx5e_flow_tables fts
;
524 struct mlx5e_eth_addr_db eth_addr
;
525 struct mlx5e_vlan_db vlan
;
527 struct mlx5e_params params
;
528 spinlock_t async_events_spinlock
; /* sync hw events */
529 struct work_struct update_carrier_work
;
530 struct work_struct set_rx_mode_work
;
531 struct delayed_work update_stats_work
;
533 struct mlx5_core_dev
*mdev
;
534 struct net_device
*netdev
;
535 struct mlx5e_stats stats
;
536 struct mlx5e_tstamp tstamp
;
539 #define MLX5E_NET_IP_ALIGN 2
541 struct mlx5e_tx_wqe
{
542 struct mlx5_wqe_ctrl_seg ctrl
;
543 struct mlx5_wqe_eth_seg eth
;
546 struct mlx5e_rx_wqe
{
547 struct mlx5_wqe_srq_next_seg next
;
548 struct mlx5_wqe_data_seg data
;
551 enum mlx5e_link_mode
{
552 MLX5E_1000BASE_CX_SGMII
= 0,
553 MLX5E_1000BASE_KX
= 1,
554 MLX5E_10GBASE_CX4
= 2,
555 MLX5E_10GBASE_KX4
= 3,
556 MLX5E_10GBASE_KR
= 4,
557 MLX5E_20GBASE_KR2
= 5,
558 MLX5E_40GBASE_CR4
= 6,
559 MLX5E_40GBASE_KR4
= 7,
560 MLX5E_56GBASE_R4
= 8,
561 MLX5E_10GBASE_CR
= 12,
562 MLX5E_10GBASE_SR
= 13,
563 MLX5E_10GBASE_ER
= 14,
564 MLX5E_40GBASE_SR4
= 15,
565 MLX5E_40GBASE_LR4
= 16,
566 MLX5E_100GBASE_CR4
= 20,
567 MLX5E_100GBASE_SR4
= 21,
568 MLX5E_100GBASE_KR4
= 22,
569 MLX5E_100GBASE_LR4
= 23,
570 MLX5E_100BASE_TX
= 24,
571 MLX5E_100BASE_T
= 25,
572 MLX5E_10GBASE_T
= 26,
573 MLX5E_25GBASE_CR
= 27,
574 MLX5E_25GBASE_KR
= 28,
575 MLX5E_25GBASE_SR
= 29,
576 MLX5E_50GBASE_CR2
= 30,
577 MLX5E_50GBASE_KR2
= 31,
578 MLX5E_LINK_MODES_NUMBER
,
581 #define MLX5E_PROT_MASK(link_mode) (1 << link_mode)
583 void mlx5e_send_nop(struct mlx5e_sq
*sq
, bool notify_hw
);
584 u16
mlx5e_select_queue(struct net_device
*dev
, struct sk_buff
*skb
,
585 void *accel_priv
, select_queue_fallback_t fallback
);
586 netdev_tx_t
mlx5e_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
588 void mlx5e_completion_event(struct mlx5_core_cq
*mcq
);
589 void mlx5e_cq_error_event(struct mlx5_core_cq
*mcq
, enum mlx5_event event
);
590 int mlx5e_napi_poll(struct napi_struct
*napi
, int budget
);
591 bool mlx5e_poll_tx_cq(struct mlx5e_cq
*cq
);
592 int mlx5e_poll_rx_cq(struct mlx5e_cq
*cq
, int budget
);
593 bool mlx5e_post_rx_wqes(struct mlx5e_rq
*rq
);
594 struct mlx5_cqe64
*mlx5e_get_cqe(struct mlx5e_cq
*cq
);
596 void mlx5e_update_stats(struct mlx5e_priv
*priv
);
598 int mlx5e_create_flow_tables(struct mlx5e_priv
*priv
);
599 void mlx5e_destroy_flow_tables(struct mlx5e_priv
*priv
);
600 void mlx5e_init_eth_addr(struct mlx5e_priv
*priv
);
601 void mlx5e_set_rx_mode_work(struct work_struct
*work
);
603 void mlx5e_fill_hwstamp(struct mlx5e_tstamp
*clock
, u64 timestamp
,
604 struct skb_shared_hwtstamps
*hwts
);
605 void mlx5e_timestamp_init(struct mlx5e_priv
*priv
);
606 void mlx5e_timestamp_cleanup(struct mlx5e_priv
*priv
);
607 int mlx5e_hwstamp_set(struct net_device
*dev
, struct ifreq
*ifr
);
608 int mlx5e_hwstamp_get(struct net_device
*dev
, struct ifreq
*ifr
);
610 int mlx5e_vlan_rx_add_vid(struct net_device
*dev
, __always_unused __be16 proto
,
612 int mlx5e_vlan_rx_kill_vid(struct net_device
*dev
, __always_unused __be16 proto
,
614 void mlx5e_enable_vlan_filter(struct mlx5e_priv
*priv
);
615 void mlx5e_disable_vlan_filter(struct mlx5e_priv
*priv
);
617 int mlx5e_redirect_rqt(struct mlx5e_priv
*priv
, enum mlx5e_rqt_ix rqt_ix
);
618 void mlx5e_build_tir_ctx_hash(void *tirc
, struct mlx5e_priv
*priv
);
620 int mlx5e_open_locked(struct net_device
*netdev
);
621 int mlx5e_close_locked(struct net_device
*netdev
);
623 static inline void mlx5e_tx_notify_hw(struct mlx5e_sq
*sq
,
624 struct mlx5e_tx_wqe
*wqe
, int bf_sz
)
626 u16 ofst
= MLX5_BF_OFFSET
+ sq
->bf_offset
;
628 /* ensure wqe is visible to device before updating doorbell record */
631 *sq
->wq
.db
= cpu_to_be32(sq
->pc
);
633 /* ensure doorbell record is visible to device before ringing the
639 __iowrite64_copy(sq
->uar_bf_map
+ ofst
, &wqe
->ctrl
, bf_sz
);
641 /* flush the write-combining mapped buffer */
645 mlx5_write64((__be32
*)&wqe
->ctrl
, sq
->uar_map
+ ofst
, NULL
);
648 sq
->bf_offset
^= sq
->bf_buf_size
;
651 static inline void mlx5e_cq_arm(struct mlx5e_cq
*cq
)
653 struct mlx5_core_cq
*mcq
;
656 mlx5_cq_arm(mcq
, MLX5_CQ_DB_REQ_NOT
, mcq
->uar
->map
, NULL
, cq
->wq
.cc
);
659 static inline int mlx5e_get_max_num_channels(struct mlx5_core_dev
*mdev
)
661 return min_t(int, mdev
->priv
.eq_table
.num_comp_vectors
,
662 MLX5E_MAX_NUM_CHANNELS
);
665 extern const struct ethtool_ops mlx5e_ethtool_ops
;
666 u16
mlx5e_get_max_inline_cap(struct mlx5_core_dev
*mdev
);