2 * Copyright (c) 2015-2016, 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
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8 * OpenIB.org BSD license below:
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11 * without modification, are permitted provided that the following
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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
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21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 #include <linux/if_vlan.h>
36 #include <linux/etherdevice.h>
37 #include <linux/timecounter.h>
38 #include <linux/net_tstamp.h>
39 #include <linux/ptp_clock_kernel.h>
40 #include <linux/mlx5/driver.h>
41 #include <linux/mlx5/qp.h>
42 #include <linux/mlx5/cq.h>
43 #include <linux/mlx5/port.h>
44 #include <linux/mlx5/vport.h>
45 #include <linux/mlx5/transobj.h>
46 #include <linux/rhashtable.h>
48 #include "mlx5_core.h"
50 #define MLX5E_MAX_NUM_TC 8
52 #define MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE 0x6
53 #define MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE 0xa
54 #define MLX5E_PARAMS_MAXIMUM_LOG_SQ_SIZE 0xd
56 #define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE 0x1
57 #define MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE 0xa
58 #define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE 0xd
60 #define MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ (64 * 1024)
61 #define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC 0x10
62 #define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS 0x20
63 #define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC 0x10
64 #define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS 0x20
65 #define MLX5E_PARAMS_DEFAULT_MIN_RX_WQES 0x80
67 #define MLX5E_LOG_INDIR_RQT_SIZE 0x7
68 #define MLX5E_INDIR_RQT_SIZE BIT(MLX5E_LOG_INDIR_RQT_SIZE)
69 #define MLX5E_MAX_NUM_CHANNELS (MLX5E_INDIR_RQT_SIZE >> 1)
70 #define MLX5E_TX_CQ_POLL_BUDGET 128
71 #define MLX5E_UPDATE_STATS_INTERVAL 200 /* msecs */
72 #define MLX5E_SQ_BF_BUDGET 16
74 #define MLX5E_NUM_MAIN_GROUPS 9
75 #define MLX5E_NET_IP_ALIGN 2
78 struct mlx5_wqe_ctrl_seg ctrl;
79 struct mlx5_wqe_eth_seg eth;
83 struct mlx5_wqe_srq_next_seg next;
84 struct mlx5_wqe_data_seg data;
87 #ifdef CONFIG_MLX5_CORE_EN_DCB
88 #define MLX5E_MAX_BW_ALLOC 100 /* Max percentage of BW allocation */
89 #define MLX5E_MIN_BW_ALLOC 1 /* Min percentage of BW allocation */
92 static const char vport_strings[][ETH_GSTRING_LEN] = {
93 /* vport statistics */
102 "rx_unicast_packets",
104 "tx_unicast_packets",
106 "rx_multicast_packets",
107 "rx_multicast_bytes",
108 "tx_multicast_packets",
109 "tx_multicast_bytes",
110 "rx_broadcast_packets",
111 "rx_broadcast_bytes",
112 "tx_broadcast_packets",
113 "tx_broadcast_bytes",
133 struct mlx5e_vport_stats {
139 u64 rx_error_packets;
141 u64 tx_error_packets;
143 u64 rx_unicast_packets;
144 u64 rx_unicast_bytes;
145 u64 tx_unicast_packets;
146 u64 tx_unicast_bytes;
147 u64 rx_multicast_packets;
148 u64 rx_multicast_bytes;
149 u64 tx_multicast_packets;
150 u64 tx_multicast_bytes;
151 u64 rx_broadcast_packets;
152 u64 rx_broadcast_bytes;
153 u64 tx_broadcast_packets;
154 u64 tx_broadcast_bytes;
159 u64 tso_inner_packets;
168 u64 tx_queue_stopped;
170 u64 tx_queue_dropped;
173 #define NUM_VPORT_COUNTERS 35
176 static const char pport_strings[][ETH_GSTRING_LEN] = {
177 /* IEEE802.3 counters */
188 "in_range_len_errors",
198 /* RFC2863 counters */
210 "out_multicast_pkts",
211 "out_broadcast_pkts",
213 /* RFC2819 counters */
234 "p8192to10239octets",
237 #define NUM_IEEE_802_3_COUNTERS 19
238 #define NUM_RFC_2863_COUNTERS 13
239 #define NUM_RFC_2819_COUNTERS 21
240 #define NUM_PPORT_COUNTERS (NUM_IEEE_802_3_COUNTERS + \
241 NUM_RFC_2863_COUNTERS + \
242 NUM_RFC_2819_COUNTERS)
244 struct mlx5e_pport_stats {
245 __be64 IEEE_802_3_counters[NUM_IEEE_802_3_COUNTERS];
246 __be64 RFC_2863_counters[NUM_RFC_2863_COUNTERS];
247 __be64 RFC_2819_counters[NUM_RFC_2819_COUNTERS];
250 static const char qcounter_stats_strings[][ETH_GSTRING_LEN] = {
254 struct mlx5e_qcounter_stats {
255 u32 rx_out_of_buffer;
256 #define NUM_Q_COUNTERS 1
259 static const char rq_stats_strings[][ETH_GSTRING_LEN] = {
269 struct mlx5e_rq_stats {
277 #define NUM_RQ_STATS 7
280 static const char sq_stats_strings[][ETH_GSTRING_LEN] = {
287 "csum_offload_inner",
295 struct mlx5e_sq_stats {
296 /* commonly accessed in data path */
301 u64 tso_inner_packets;
303 u64 csum_offload_inner;
305 /* less likely accessed in data path */
306 u64 csum_offload_none;
310 #define NUM_SQ_STATS 12
314 struct mlx5e_vport_stats vport;
315 struct mlx5e_pport_stats pport;
316 struct mlx5e_qcounter_stats qcnt;
319 struct mlx5e_params {
324 u16 rx_cq_moderation_usec;
325 u16 rx_cq_moderation_pkts;
326 u16 tx_cq_moderation_usec;
327 u16 tx_cq_moderation_pkts;
333 u8 toeplitz_hash_key[40];
334 u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE];
335 #ifdef CONFIG_MLX5_CORE_EN_DCB
340 struct mlx5e_tstamp {
342 struct cyclecounter cycles;
343 struct timecounter clock;
344 struct hwtstamp_config hwtstamp_config;
346 unsigned long overflow_period;
347 struct delayed_work overflow_work;
348 struct mlx5_core_dev *mdev;
349 struct ptp_clock *ptp;
350 struct ptp_clock_info ptp_info;
354 MLX5E_RQ_STATE_POST_WQES_ENABLE,
358 /* data path - accessed per cqe */
361 /* data path - accessed per napi poll */
362 struct napi_struct *napi;
363 struct mlx5_core_cq mcq;
364 struct mlx5e_channel *channel;
365 struct mlx5e_priv *priv;
368 struct mlx5_wq_ctrl wq_ctrl;
369 } ____cacheline_aligned_in_smp;
372 typedef void (*mlx5e_fp_handle_rx_cqe)(struct mlx5e_rq *rq,
373 struct mlx5_cqe64 *cqe);
374 typedef int (*mlx5e_fp_alloc_wqe)(struct mlx5e_rq *rq, struct mlx5e_rx_wqe *wqe,
379 struct mlx5_wq_ll wq;
381 struct sk_buff **skb;
384 struct net_device *netdev;
385 struct mlx5e_tstamp *tstamp;
386 struct mlx5e_rq_stats stats;
388 mlx5e_fp_handle_rx_cqe handle_rx_cqe;
389 mlx5e_fp_alloc_wqe alloc_wqe;
395 struct mlx5_wq_ctrl wq_ctrl;
397 struct mlx5e_channel *channel;
398 struct mlx5e_priv *priv;
399 } ____cacheline_aligned_in_smp;
401 struct mlx5e_tx_wqe_info {
407 enum mlx5e_dma_map_type {
408 MLX5E_DMA_MAP_SINGLE,
412 struct mlx5e_sq_dma {
415 enum mlx5e_dma_map_type type;
419 MLX5E_SQ_STATE_WAKE_TXQ_ENABLE,
420 MLX5E_SQ_STATE_BF_ENABLE,
426 /* dirtied @completion */
431 u16 pc ____cacheline_aligned_in_smp;
436 struct mlx5e_sq_stats stats;
440 /* pointers to per packet info: write@xmit, read@completion */
441 struct sk_buff **skb;
442 struct mlx5e_sq_dma *dma_fifo;
443 struct mlx5e_tx_wqe_info *wqe_info;
446 struct mlx5_wq_cyc wq;
448 void __iomem *uar_map;
449 struct netdev_queue *txq;
455 struct mlx5e_tstamp *tstamp;
460 struct mlx5_wq_ctrl wq_ctrl;
462 struct mlx5e_channel *channel;
464 } ____cacheline_aligned_in_smp;
466 static inline bool mlx5e_sq_has_room_for(struct mlx5e_sq *sq, u16 n)
468 return (((sq->wq.sz_m1 & (sq->cc - sq->pc)) >= n) ||
473 MLX5E_CHANNEL_NAPI_SCHED = 1,
476 struct mlx5e_channel {
479 struct mlx5e_sq sq[MLX5E_MAX_NUM_TC];
480 struct napi_struct napi;
482 struct net_device *netdev;
488 struct mlx5e_priv *priv;
493 enum mlx5e_traffic_types {
498 MLX5E_TT_IPV4_IPSEC_AH,
499 MLX5E_TT_IPV6_IPSEC_AH,
500 MLX5E_TT_IPV4_IPSEC_ESP,
501 MLX5E_TT_IPV6_IPSEC_ESP,
508 #define IS_HASHING_TT(tt) (tt != MLX5E_TT_ANY)
511 MLX5E_INDIRECTION_RQT,
516 struct mlx5e_eth_addr_info {
517 u8 addr[ETH_ALEN + 2];
519 struct mlx5_flow_rule *ft_rule[MLX5E_NUM_TT];
522 #define MLX5E_ETH_ADDR_HASH_SIZE (1 << BITS_PER_BYTE)
524 struct mlx5e_eth_addr_db {
525 struct hlist_head netdev_uc[MLX5E_ETH_ADDR_HASH_SIZE];
526 struct hlist_head netdev_mc[MLX5E_ETH_ADDR_HASH_SIZE];
527 struct mlx5e_eth_addr_info broadcast;
528 struct mlx5e_eth_addr_info allmulti;
529 struct mlx5e_eth_addr_info promisc;
530 bool broadcast_enabled;
531 bool allmulti_enabled;
532 bool promisc_enabled;
536 MLX5E_STATE_ASYNC_EVENTS_ENABLE,
538 MLX5E_STATE_DESTROYING,
541 struct mlx5e_vlan_db {
542 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
543 struct mlx5_flow_rule *active_vlans_rule[VLAN_N_VID];
544 struct mlx5_flow_rule *untagged_rule;
545 struct mlx5_flow_rule *any_vlan_rule;
546 bool filter_disabled;
549 struct mlx5e_vxlan_db {
550 spinlock_t lock; /* protect vxlan table */
551 struct radix_tree_root tree;
554 struct mlx5e_flow_table {
556 struct mlx5_flow_table *t;
557 struct mlx5_flow_group **g;
560 struct mlx5e_tc_flow_table {
561 struct mlx5_flow_table *t;
563 struct rhashtable_params ht_params;
564 struct rhashtable ht;
567 struct mlx5e_flow_tables {
568 struct mlx5_flow_namespace *ns;
569 struct mlx5e_tc_flow_table tc;
570 struct mlx5e_flow_table vlan;
571 struct mlx5e_flow_table main;
575 /* priv data path fields - start */
576 struct mlx5e_sq **txq_to_sq_map;
577 int channeltc_to_txq_map[MLX5E_MAX_NUM_CHANNELS][MLX5E_MAX_NUM_TC];
578 /* priv data path fields - end */
581 struct mutex state_lock; /* Protects Interface state */
582 struct mlx5_uar cq_uar;
585 struct mlx5_core_mkey mkey;
586 struct mlx5e_rq drop_rq;
588 struct mlx5e_channel **channel;
589 u32 tisn[MLX5E_MAX_NUM_TC];
590 u32 rqtn[MLX5E_NUM_RQT];
591 u32 tirn[MLX5E_NUM_TT];
593 struct mlx5e_flow_tables fts;
594 struct mlx5e_eth_addr_db eth_addr;
595 struct mlx5e_vlan_db vlan;
596 struct mlx5e_vxlan_db vxlan;
598 struct mlx5e_params params;
599 struct work_struct update_carrier_work;
600 struct work_struct set_rx_mode_work;
601 struct delayed_work update_stats_work;
603 struct mlx5_core_dev *mdev;
604 struct net_device *netdev;
605 struct mlx5e_stats stats;
606 struct mlx5e_tstamp tstamp;
610 enum mlx5e_link_mode {
611 MLX5E_1000BASE_CX_SGMII = 0,
612 MLX5E_1000BASE_KX = 1,
613 MLX5E_10GBASE_CX4 = 2,
614 MLX5E_10GBASE_KX4 = 3,
615 MLX5E_10GBASE_KR = 4,
616 MLX5E_20GBASE_KR2 = 5,
617 MLX5E_40GBASE_CR4 = 6,
618 MLX5E_40GBASE_KR4 = 7,
619 MLX5E_56GBASE_R4 = 8,
620 MLX5E_10GBASE_CR = 12,
621 MLX5E_10GBASE_SR = 13,
622 MLX5E_10GBASE_ER = 14,
623 MLX5E_40GBASE_SR4 = 15,
624 MLX5E_40GBASE_LR4 = 16,
625 MLX5E_100GBASE_CR4 = 20,
626 MLX5E_100GBASE_SR4 = 21,
627 MLX5E_100GBASE_KR4 = 22,
628 MLX5E_100GBASE_LR4 = 23,
629 MLX5E_100BASE_TX = 24,
630 MLX5E_100BASE_T = 25,
631 MLX5E_10GBASE_T = 26,
632 MLX5E_25GBASE_CR = 27,
633 MLX5E_25GBASE_KR = 28,
634 MLX5E_25GBASE_SR = 29,
635 MLX5E_50GBASE_CR2 = 30,
636 MLX5E_50GBASE_KR2 = 31,
637 MLX5E_LINK_MODES_NUMBER,
640 #define MLX5E_PROT_MASK(link_mode) (1 << link_mode)
642 void mlx5e_send_nop(struct mlx5e_sq *sq, bool notify_hw);
643 u16 mlx5e_select_queue(struct net_device *dev, struct sk_buff *skb,
644 void *accel_priv, select_queue_fallback_t fallback);
645 netdev_tx_t mlx5e_xmit(struct sk_buff *skb, struct net_device *dev);
647 void mlx5e_completion_event(struct mlx5_core_cq *mcq);
648 void mlx5e_cq_error_event(struct mlx5_core_cq *mcq, enum mlx5_event event);
649 int mlx5e_napi_poll(struct napi_struct *napi, int budget);
650 bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget);
651 int mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget);
652 void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe);
653 bool mlx5e_post_rx_wqes(struct mlx5e_rq *rq);
654 int mlx5e_alloc_rx_wqe(struct mlx5e_rq *rq, struct mlx5e_rx_wqe *wqe, u16 ix);
655 struct mlx5_cqe64 *mlx5e_get_cqe(struct mlx5e_cq *cq);
657 void mlx5e_update_stats(struct mlx5e_priv *priv);
659 int mlx5e_create_flow_tables(struct mlx5e_priv *priv);
660 void mlx5e_destroy_flow_tables(struct mlx5e_priv *priv);
661 void mlx5e_init_eth_addr(struct mlx5e_priv *priv);
662 void mlx5e_set_rx_mode_work(struct work_struct *work);
664 void mlx5e_fill_hwstamp(struct mlx5e_tstamp *clock, u64 timestamp,
665 struct skb_shared_hwtstamps *hwts);
666 void mlx5e_timestamp_init(struct mlx5e_priv *priv);
667 void mlx5e_timestamp_cleanup(struct mlx5e_priv *priv);
668 int mlx5e_hwstamp_set(struct net_device *dev, struct ifreq *ifr);
669 int mlx5e_hwstamp_get(struct net_device *dev, struct ifreq *ifr);
671 int mlx5e_vlan_rx_add_vid(struct net_device *dev, __always_unused __be16 proto,
673 int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
675 void mlx5e_enable_vlan_filter(struct mlx5e_priv *priv);
676 void mlx5e_disable_vlan_filter(struct mlx5e_priv *priv);
678 int mlx5e_redirect_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix);
679 void mlx5e_build_tir_ctx_hash(void *tirc, struct mlx5e_priv *priv);
681 int mlx5e_open_locked(struct net_device *netdev);
682 int mlx5e_close_locked(struct net_device *netdev);
683 void mlx5e_build_default_indir_rqt(struct mlx5_core_dev *mdev,
684 u32 *indirection_rqt, int len,
687 static inline void mlx5e_tx_notify_hw(struct mlx5e_sq *sq,
688 struct mlx5e_tx_wqe *wqe, int bf_sz)
690 u16 ofst = MLX5_BF_OFFSET + sq->bf_offset;
692 /* ensure wqe is visible to device before updating doorbell record */
695 *sq->wq.db = cpu_to_be32(sq->pc);
697 /* ensure doorbell record is visible to device before ringing the
702 __iowrite64_copy(sq->uar_map + ofst, &wqe->ctrl, bf_sz);
704 mlx5_write64((__be32 *)&wqe->ctrl, sq->uar_map + ofst, NULL);
705 /* flush the write-combining mapped buffer */
708 sq->bf_offset ^= sq->bf_buf_size;
711 static inline void mlx5e_cq_arm(struct mlx5e_cq *cq)
713 struct mlx5_core_cq *mcq;
716 mlx5_cq_arm(mcq, MLX5_CQ_DB_REQ_NOT, mcq->uar->map, NULL, cq->wq.cc);
719 static inline int mlx5e_get_max_num_channels(struct mlx5_core_dev *mdev)
721 return min_t(int, mdev->priv.eq_table.num_comp_vectors,
722 MLX5E_MAX_NUM_CHANNELS);
725 extern const struct ethtool_ops mlx5e_ethtool_ops;
726 #ifdef CONFIG_MLX5_CORE_EN_DCB
727 extern const struct dcbnl_rtnl_ops mlx5e_dcbnl_ops;
728 int mlx5e_dcbnl_ieee_setets_core(struct mlx5e_priv *priv, struct ieee_ets *ets);
731 u16 mlx5e_get_max_inline_cap(struct mlx5_core_dev *mdev);
733 #endif /* __MLX5_EN_H__ */