drivers/net/ethernet/mellanox/mlx4/mlx4_en.h

   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/list.h>
  40 #include <linux/mutex.h>
  41 #include <linux/netdevice.h>
  42 #include <linux/if_vlan.h>
  43 #include <linux/net_tstamp.h>
  44 #ifdef CONFIG_MLX4_EN_DCB
  45 #include <linux/dcbnl.h>
  46 #endif
  47 #include <linux/cpu_rmap.h>
  48 #include <linux/ptp_clock_kernel.h>
  49
  50 #include <linux/mlx4/device.h>
  51 #include <linux/mlx4/qp.h>
  52 #include <linux/mlx4/cq.h>
  53 #include <linux/mlx4/srq.h>
  54 #include <linux/mlx4/doorbell.h>
  55 #include <linux/mlx4/cmd.h>
  56
  57 #include "en_port.h"
  58 #include "mlx4_stats.h"
  59
  60 #define DRV_NAME        "mlx4_en"
  61 #define DRV_VERSION     "2.2-1"
  62 #define DRV_RELDATE     "Feb 2014"
  63
  64 #define MLX4_EN_MSG_LEVEL       (NETIF_MSG_LINK | NETIF_MSG_IFDOWN)
  65
  66 /*
  67  * Device constants
  68  */
  69
  70
  71 #define MLX4_EN_PAGE_SHIFT      12
  72 #define MLX4_EN_PAGE_SIZE       (1 << MLX4_EN_PAGE_SHIFT)
  73 #define DEF_RX_RINGS            16
  74 #define MAX_RX_RINGS            128
  75 #define MIN_RX_RINGS            4
  76 #define TXBB_SIZE               64
  77 #define HEADROOM                (2048 / TXBB_SIZE + 1)
  78 #define STAMP_STRIDE            64
  79 #define STAMP_DWORDS            (STAMP_STRIDE / 4)
  80 #define STAMP_SHIFT             31
  81 #define STAMP_VAL               0x7fffffff
  82 #define STATS_DELAY             (HZ / 4)
  83 #define SERVICE_TASK_DELAY      (HZ / 4)
  84 #define MAX_NUM_OF_FS_RULES     256
  85
  86 #define MLX4_EN_FILTER_HASH_SHIFT 4
  87 #define MLX4_EN_FILTER_EXPIRY_QUOTA 60
  88
  89 /* Typical TSO descriptor with 16 gather entries is 352 bytes... */
  90 #define MAX_DESC_SIZE           512
  91 #define MAX_DESC_TXBBS          (MAX_DESC_SIZE / TXBB_SIZE)
  92
  93 /*
  94  * OS related constants and tunables
  95  */
  96
  97 #define MLX4_EN_PRIV_FLAGS_BLUEFLAME 1
  98 #define MLX4_EN_PRIV_FLAGS_PHV       2
  99
 100 #define MLX4_EN_WATCHDOG_TIMEOUT        (15 * HZ)
 101
 102 /* Use the maximum between 16384 and a single page */
 103 #define MLX4_EN_ALLOC_SIZE      PAGE_ALIGN(16384)
 104
 105 #define MLX4_EN_ALLOC_PREFER_ORDER      PAGE_ALLOC_COSTLY_ORDER
 106
 107 /* Receive fragment sizes; we use at most 3 fragments (for 9600 byte MTU
 108  * and 4K allocations) */
 109 enum {
 110         FRAG_SZ0 = 1536 - NET_IP_ALIGN,
 111         FRAG_SZ1 = 4096,
 112         FRAG_SZ2 = 4096,
 113         FRAG_SZ3 = MLX4_EN_ALLOC_SIZE
 114 };
 115 #define MLX4_EN_MAX_RX_FRAGS    4
 116
 117 /* Maximum ring sizes */
 118 #define MLX4_EN_MAX_TX_SIZE     8192
 119 #define MLX4_EN_MAX_RX_SIZE     8192
 120
 121 /* Minimum ring size for our page-allocation scheme to work */
 122 #define MLX4_EN_MIN_RX_SIZE     (MLX4_EN_ALLOC_SIZE / SMP_CACHE_BYTES)
 123 #define MLX4_EN_MIN_TX_SIZE     (4096 / TXBB_SIZE)
 124
 125 #define MLX4_EN_SMALL_PKT_SIZE          64
 126 #define MLX4_EN_MIN_TX_RING_P_UP        1
 127 #define MLX4_EN_MAX_TX_RING_P_UP        32
 128 #define MLX4_EN_NUM_UP                  8
 129 #define MLX4_EN_DEF_TX_RING_SIZE        512
 130 #define MLX4_EN_DEF_RX_RING_SIZE        1024
 131 #define MAX_TX_RINGS                    (MLX4_EN_MAX_TX_RING_P_UP * \
 132                                          MLX4_EN_NUM_UP)
 133
 134 #define MLX4_EN_DEFAULT_TX_WORK         256
 135 #define MLX4_EN_DOORBELL_BUDGET         8
 136
 137 /* Target number of packets to coalesce with interrupt moderation */
 138 #define MLX4_EN_RX_COAL_TARGET  44
 139 #define MLX4_EN_RX_COAL_TIME    0x10
 140
 141 #define MLX4_EN_TX_COAL_PKTS    16
 142 #define MLX4_EN_TX_COAL_TIME    0x10
 143
 144 #define MLX4_EN_RX_RATE_LOW             400000
 145 #define MLX4_EN_RX_COAL_TIME_LOW        0
 146 #define MLX4_EN_RX_RATE_HIGH            450000
 147 #define MLX4_EN_RX_COAL_TIME_HIGH       128
 148 #define MLX4_EN_RX_SIZE_THRESH          1024
 149 #define MLX4_EN_RX_RATE_THRESH          (1000000 / MLX4_EN_RX_COAL_TIME_HIGH)
 150 #define MLX4_EN_SAMPLE_INTERVAL         0
 151 #define MLX4_EN_AVG_PKT_SMALL           256
 152
 153 #define MLX4_EN_AUTO_CONF       0xffff
 154
 155 #define MLX4_EN_DEF_RX_PAUSE    1
 156 #define MLX4_EN_DEF_TX_PAUSE    1
 157
 158 /* Interval between successive polls in the Tx routine when polling is used
 159    instead of interrupts (in per-core Tx rings) - should be power of 2 */
 160 #define MLX4_EN_TX_POLL_MODER   16
 161 #define MLX4_EN_TX_POLL_TIMEOUT (HZ / 4)
 162
 163 #define SMALL_PACKET_SIZE      (256 - NET_IP_ALIGN)
 164 #define HEADER_COPY_SIZE       (128 - NET_IP_ALIGN)
 165 #define MLX4_LOOPBACK_TEST_PAYLOAD (HEADER_COPY_SIZE - ETH_HLEN)
 166
 167 #define MLX4_EN_MIN_MTU         46
 168 /* VLAN_HLEN is added twice,to support skb vlan tagged with multiple
 169  * headers. (For example: ETH_P_8021Q and ETH_P_8021AD).
 170  */
 171 #define MLX4_EN_EFF_MTU(mtu)    ((mtu) + ETH_HLEN + (2 * VLAN_HLEN))
 172 #define ETH_BCAST               0xffffffffffffULL
 173
 174 #define MLX4_EN_LOOPBACK_RETRIES        5
 175 #define MLX4_EN_LOOPBACK_TIMEOUT        100
 176
 177 #ifdef MLX4_EN_PERF_STAT
 178 /* Number of samples to 'average' */
 179 #define AVG_SIZE                        128
 180 #define AVG_FACTOR                      1024
 181
 182 #define INC_PERF_COUNTER(cnt)           (++(cnt))
 183 #define ADD_PERF_COUNTER(cnt, add)      ((cnt) += (add))
 184 #define AVG_PERF_COUNTER(cnt, sample) \
 185         ((cnt) = ((cnt) * (AVG_SIZE - 1) + (sample) * AVG_FACTOR) / AVG_SIZE)
 186 #define GET_PERF_COUNTER(cnt)           (cnt)
 187 #define GET_AVG_PERF_COUNTER(cnt)       ((cnt) / AVG_FACTOR)
 188
 189 #else
 190
 191 #define INC_PERF_COUNTER(cnt)           do {} while (0)
 192 #define ADD_PERF_COUNTER(cnt, add)      do {} while (0)
 193 #define AVG_PERF_COUNTER(cnt, sample)   do {} while (0)
 194 #define GET_PERF_COUNTER(cnt)           (0)
 195 #define GET_AVG_PERF_COUNTER(cnt)       (0)
 196 #endif /* MLX4_EN_PERF_STAT */
 197
 198 /* Constants for TX flow */
 199 enum {
 200         MAX_INLINE = 104, /* 128 - 16 - 4 - 4 */
 201         MAX_BF = 256,
 202         MIN_PKT_LEN = 17,
 203 };
 204
 205 /*
 206  * Configurables
 207  */
 208
 209 enum cq_type {
 210         RX = 0,
 211         TX = 1,
 212 };
 213
 214
 215 /*
 216  * Useful macros
 217  */
 218 #define ROUNDUP_LOG2(x)         ilog2(roundup_pow_of_two(x))
 219 #define XNOR(x, y)              (!(x) == !(y))
 220
 221
 222 struct mlx4_en_tx_info {
 223         union {
 224                 struct sk_buff *skb;
 225                 struct page *page;
 226         };
 227         dma_addr_t      map0_dma;
 228         u32             map0_byte_count;
 229         u32             nr_txbb;
 230         u32             nr_bytes;
 231         u8              linear;
 232         u8              data_offset;
 233         u8              inl;
 234         u8              ts_requested;
 235         u8              nr_maps;
 236 } ____cacheline_aligned_in_smp;
 237
 238
 239 #define MLX4_EN_BIT_DESC_OWN    0x80000000
 240 #define CTRL_SIZE       sizeof(struct mlx4_wqe_ctrl_seg)
 241 #define MLX4_EN_MEMTYPE_PAD     0x100
 242 #define DS_SIZE         sizeof(struct mlx4_wqe_data_seg)
 243
 244
 245 struct mlx4_en_tx_desc {
 246         struct mlx4_wqe_ctrl_seg ctrl;
 247         union {
 248                 struct mlx4_wqe_data_seg data; /* at least one data segment */
 249                 struct mlx4_wqe_lso_seg lso;
 250                 struct mlx4_wqe_inline_seg inl;
 251         };
 252 };
 253
 254 #define MLX4_EN_USE_SRQ         0x01000000
 255
 256 #define MLX4_EN_CX3_LOW_ID      0x1000
 257 #define MLX4_EN_CX3_HIGH_ID     0x1005
 258
 259 struct mlx4_en_rx_alloc {
 260         struct page     *page;
 261         dma_addr_t      dma;
 262         u32             page_offset;
 263         u32             page_size;
 264 };
 265
 266 #define MLX4_EN_CACHE_SIZE (2 * NAPI_POLL_WEIGHT)
 267 struct mlx4_en_page_cache {
 268         u32 index;
 269         struct mlx4_en_rx_alloc buf[MLX4_EN_CACHE_SIZE];
 270 };
 271
 272 struct mlx4_en_priv;
 273
 274 struct mlx4_en_tx_ring {
 275         /* cache line used and dirtied in tx completion
 276          * (mlx4_en_free_tx_buf())
 277          */
 278         u32                     last_nr_txbb;
 279         u32                     cons;
 280         unsigned long           wake_queue;
 281
 282         /* cache line used and dirtied in mlx4_en_xmit() */
 283         u32                     prod ____cacheline_aligned_in_smp;
 284         unsigned long           bytes;
 285         unsigned long           packets;
 286         unsigned long           tx_csum;
 287         unsigned long           tso_packets;
 288         unsigned long           xmit_more;
 289         unsigned int            tx_dropped;
 290         struct mlx4_bf          bf;
 291         unsigned long           queue_stopped;
 292
 293         /* Following part should be mostly read */
 294         cpumask_t               affinity_mask;
 295         struct mlx4_qp          qp;
 296         struct mlx4_hwq_resources wqres;
 297         u32                     size; /* number of TXBBs */
 298         u32                     size_mask;
 299         u16                     stride;
 300         u32                     full_size;
 301         u16                     cqn;    /* index of port CQ associated with this ring */
 302         u32                     buf_size;
 303         __be32                  doorbell_qpn;
 304         __be32                  mr_key;
 305         void                    *buf;
 306         struct mlx4_en_tx_info  *tx_info;
 307         struct mlx4_en_rx_ring  *recycle_ring;
 308         u32                     (*free_tx_desc)(struct mlx4_en_priv *priv,
 309                                                 struct mlx4_en_tx_ring *ring,
 310                                                 int index, u8 owner,
 311                                                 u64 timestamp, int napi_mode);
 312         u8                      *bounce_buf;
 313         struct mlx4_qp_context  context;
 314         int                     qpn;
 315         enum mlx4_qp_state      qp_state;
 316         u8                      queue_index;
 317         bool                    bf_enabled;
 318         bool                    bf_alloced;
 319         struct netdev_queue     *tx_queue;
 320         int                     hwtstamp_tx_type;
 321 } ____cacheline_aligned_in_smp;
 322
 323 struct mlx4_en_rx_desc {
 324         /* actual number of entries depends on rx ring stride */
 325         struct mlx4_wqe_data_seg data[0];
 326 };
 327
 328 struct mlx4_en_rx_ring {
 329         struct mlx4_hwq_resources wqres;
 330         struct mlx4_en_rx_alloc page_alloc[MLX4_EN_MAX_RX_FRAGS];
 331         u32 size ;      /* number of Rx descs*/
 332         u32 actual_size;
 333         u32 size_mask;
 334         u16 stride;
 335         u16 log_stride;
 336         u16 cqn;        /* index of port CQ associated with this ring */
 337         u32 prod;
 338         u32 cons;
 339         u32 buf_size;
 340         u8  fcs_del;
 341         void *buf;
 342         void *rx_info;
 343         struct bpf_prog *xdp_prog;
 344         struct mlx4_en_page_cache page_cache;
 345         unsigned long bytes;
 346         unsigned long packets;
 347         unsigned long csum_ok;
 348         unsigned long csum_none;
 349         unsigned long csum_complete;
 350         unsigned long dropped;
 351         int hwtstamp_rx_filter;
 352         cpumask_var_t affinity_mask;
 353 };
 354
 355 struct mlx4_en_cq {
 356         struct mlx4_cq          mcq;
 357         struct mlx4_hwq_resources wqres;
 358         int                     ring;
 359         struct net_device      *dev;
 360         struct napi_struct      napi;
 361         int size;
 362         int buf_size;
 363         int vector;
 364         enum cq_type is_tx;
 365         u16 moder_time;
 366         u16 moder_cnt;
 367         struct mlx4_cqe *buf;
 368 #define MLX4_EN_OPCODE_ERROR    0x1e
 369
 370         struct irq_desc *irq_desc;
 371 };
 372
 373 struct mlx4_en_port_profile {
 374         u32 flags;
 375         u32 tx_ring_num;
 376         u32 rx_ring_num;
 377         u32 tx_ring_size;
 378         u32 rx_ring_size;
 379         u8 num_tx_rings_p_up;
 380         u8 rx_pause;
 381         u8 rx_ppp;
 382         u8 tx_pause;
 383         u8 tx_ppp;
 384         int rss_rings;
 385         int inline_thold;
 386         struct hwtstamp_config hwtstamp_config;
 387 };
 388
 389 struct mlx4_en_profile {
 390         int udp_rss;
 391         u8 rss_mask;
 392         u32 active_ports;
 393         u32 small_pkt_int;
 394         u8 no_reset;
 395         u8 num_tx_rings_p_up;
 396         struct mlx4_en_port_profile prof[MLX4_MAX_PORTS + 1];
 397 };
 398
 399 struct mlx4_en_dev {
 400         struct mlx4_dev         *dev;
 401         struct pci_dev          *pdev;
 402         struct mutex            state_lock;
 403         struct net_device       *pndev[MLX4_MAX_PORTS + 1];
 404         struct net_device       *upper[MLX4_MAX_PORTS + 1];
 405         u32                     port_cnt;
 406         bool                    device_up;
 407         struct mlx4_en_profile  profile;
 408         u32                     LSO_support;
 409         struct workqueue_struct *workqueue;
 410         struct device           *dma_device;
 411         void __iomem            *uar_map;
 412         struct mlx4_uar         priv_uar;
 413         struct mlx4_mr          mr;
 414         u32                     priv_pdn;
 415         spinlock_t              uar_lock;
 416         u8                      mac_removed[MLX4_MAX_PORTS + 1];
 417         rwlock_t                clock_lock;
 418         u32                     nominal_c_mult;
 419         struct cyclecounter     cycles;
 420         struct timecounter      clock;
 421         unsigned long           last_overflow_check;
 422         unsigned long           overflow_period;
 423         struct ptp_clock        *ptp_clock;
 424         struct ptp_clock_info   ptp_clock_info;
 425         struct notifier_block   nb;
 426 };
 427
 428
 429 struct mlx4_en_rss_map {
 430         int base_qpn;
 431         struct mlx4_qp qps[MAX_RX_RINGS];
 432         enum mlx4_qp_state state[MAX_RX_RINGS];
 433         struct mlx4_qp indir_qp;
 434         enum mlx4_qp_state indir_state;
 435 };
 436
 437 enum mlx4_en_port_flag {
 438         MLX4_EN_PORT_ANC = 1<<0, /* Auto-negotiation complete */
 439         MLX4_EN_PORT_ANE = 1<<1, /* Auto-negotiation enabled */
 440 };
 441
 442 struct mlx4_en_port_state {
 443         int link_state;
 444         int link_speed;
 445         int transceiver;
 446         u32 flags;
 447 };
 448
 449 enum mlx4_en_mclist_act {
 450         MCLIST_NONE,
 451         MCLIST_REM,
 452         MCLIST_ADD,
 453 };
 454
 455 struct mlx4_en_mc_list {
 456         struct list_head        list;
 457         enum mlx4_en_mclist_act action;
 458         u8                      addr[ETH_ALEN];
 459         u64                     reg_id;
 460         u64                     tunnel_reg_id;
 461 };
 462
 463 struct mlx4_en_frag_info {
 464         u16 frag_size;
 465         u16 frag_prefix_size;
 466         u32 frag_stride;
 467         enum dma_data_direction dma_dir;
 468         int order;
 469 };
 470
 471 #ifdef CONFIG_MLX4_EN_DCB
 472 /* Minimal TC BW - setting to 0 will block traffic */
 473 #define MLX4_EN_BW_MIN 1
 474 #define MLX4_EN_BW_MAX 100 /* Utilize 100% of the line */
 475
 476 #define MLX4_EN_TC_ETS 7
 477
 478 enum dcb_pfc_type {
 479         pfc_disabled = 0,
 480         pfc_enabled_full,
 481         pfc_enabled_tx,
 482         pfc_enabled_rx
 483 };
 484
 485 struct tc_configuration {
 486         enum dcb_pfc_type  dcb_pfc;
 487 };
 488
 489 struct mlx4_en_cee_config {
 490         bool    pfc_state;
 491         struct  tc_configuration tc_config[MLX4_EN_NUM_UP];
 492 };
 493
 494 struct mlx4_en_cee_params {
 495         u8 dcbx_cap;
 496         struct mlx4_en_cee_config dcb_cfg;
 497 };
 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 struct mlx4_en_priv {
 533         struct mlx4_en_dev *mdev;
 534         struct mlx4_en_port_profile *prof;
 535         struct net_device *dev;
 536         unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 537         struct mlx4_en_port_state port_state;
 538         spinlock_t stats_lock;
 539         struct ethtool_flow_id ethtool_rules[MAX_NUM_OF_FS_RULES];
 540         /* To allow rules removal while port is going down */
 541         struct list_head ethtool_list;
 542
 543         unsigned long last_moder_packets[MAX_RX_RINGS];
 544         unsigned long last_moder_tx_packets;
 545         unsigned long last_moder_bytes[MAX_RX_RINGS];
 546         unsigned long last_moder_jiffies;
 547         int last_moder_time[MAX_RX_RINGS];
 548         u16 rx_usecs;
 549         u16 rx_frames;
 550         u16 tx_usecs;
 551         u16 tx_frames;
 552         u32 pkt_rate_low;
 553         u16 rx_usecs_low;
 554         u32 pkt_rate_high;
 555         u16 rx_usecs_high;
 556         u16 sample_interval;
 557         u16 adaptive_rx_coal;
 558         u32 msg_enable;
 559         u32 loopback_ok;
 560         u32 validate_loopback;
 561
 562         struct mlx4_hwq_resources res;
 563         int link_state;
 564         int last_link_state;
 565         bool port_up;
 566         int port;
 567         int registered;
 568         int allocated;
 569         int stride;
 570         unsigned char current_mac[ETH_ALEN + 2];
 571         int mac_index;
 572         unsigned max_mtu;
 573         int base_qpn;
 574         int cqe_factor;
 575         int cqe_size;
 576
 577         struct mlx4_en_rss_map rss_map;
 578         __be32 ctrl_flags;
 579         u32 flags;
 580         u8 num_tx_rings_p_up;
 581         u32 tx_work_limit;
 582         u32 tx_ring_num;
 583         u32 rx_ring_num;
 584         u32 rx_skb_size;
 585         struct mlx4_en_frag_info frag_info[MLX4_EN_MAX_RX_FRAGS];
 586         u16 num_frags;
 587         u16 log_rx_info;
 588         int xdp_ring_num;
 589
 590         struct mlx4_en_tx_ring **tx_ring;
 591         struct mlx4_en_rx_ring *rx_ring[MAX_RX_RINGS];
 592         struct mlx4_en_cq **tx_cq;
 593         struct mlx4_en_cq *rx_cq[MAX_RX_RINGS];
 594         struct mlx4_qp drop_qp;
 595         struct work_struct rx_mode_task;
 596         struct work_struct watchdog_task;
 597         struct work_struct linkstate_task;
 598         struct delayed_work stats_task;
 599         struct delayed_work service_task;
 600         struct work_struct vxlan_add_task;
 601         struct work_struct vxlan_del_task;
 602         struct mlx4_en_perf_stats pstats;
 603         struct mlx4_en_pkt_stats pkstats;
 604         struct mlx4_en_counter_stats pf_stats;
 605         struct mlx4_en_flow_stats_rx rx_priority_flowstats[MLX4_NUM_PRIORITIES];
 606         struct mlx4_en_flow_stats_tx tx_priority_flowstats[MLX4_NUM_PRIORITIES];
 607         struct mlx4_en_flow_stats_rx rx_flowstats;
 608         struct mlx4_en_flow_stats_tx tx_flowstats;
 609         struct mlx4_en_port_stats port_stats;
 610         struct mlx4_en_stats_bitmap stats_bitmap;
 611         struct list_head mc_list;
 612         struct list_head curr_list;
 613         u64 broadcast_id;
 614         struct mlx4_en_stat_out_mbox hw_stats;
 615         int vids[128];
 616         bool wol;
 617         struct device *ddev;
 618         struct hlist_head mac_hash[MLX4_EN_MAC_HASH_SIZE];
 619         struct hwtstamp_config hwtstamp_config;
 620         u32 counter_index;
 621
 622 #ifdef CONFIG_MLX4_EN_DCB
 623 #define MLX4_EN_DCB_ENABLED     0x3
 624         struct ieee_ets ets;
 625         u16 maxrate[IEEE_8021QAZ_MAX_TCS];
 626         enum dcbnl_cndd_states cndd_state[IEEE_8021QAZ_MAX_TCS];
 627         struct mlx4_en_cee_params cee_params;
 628 #endif
 629 #ifdef CONFIG_RFS_ACCEL
 630         spinlock_t filters_lock;
 631         int last_filter_id;
 632         struct list_head filters;
 633         struct hlist_head filter_hash[1 << MLX4_EN_FILTER_HASH_SHIFT];
 634 #endif
 635         u64 tunnel_reg_id;
 636         __be16 vxlan_port;
 637
 638         u32 pflags;
 639         u8 rss_key[MLX4_EN_RSS_KEY_SIZE];
 640         u8 rss_hash_fn;
 641 };
 642
 643 enum mlx4_en_wol {
 644         MLX4_EN_WOL_MAGIC = (1ULL << 61),
 645         MLX4_EN_WOL_ENABLED = (1ULL << 62),
 646 };
 647
 648 struct mlx4_mac_entry {
 649         struct hlist_node hlist;
 650         unsigned char mac[ETH_ALEN + 2];
 651         u64 reg_id;
 652         struct rcu_head rcu;
 653 };
 654
 655 static inline struct mlx4_cqe *mlx4_en_get_cqe(void *buf, int idx, int cqe_sz)
 656 {
 657         return buf + idx * cqe_sz;
 658 }
 659
 660 #define MLX4_EN_WOL_DO_MODIFY (1ULL << 63)
 661
 662 void mlx4_en_init_ptys2ethtool_map(void);
 663 void mlx4_en_update_loopback_state(struct net_device *dev,
 664                                    netdev_features_t features);
 665
 666 void mlx4_en_destroy_netdev(struct net_device *dev);
 667 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
 668                         struct mlx4_en_port_profile *prof);
 669
 670 int mlx4_en_start_port(struct net_device *dev);
 671 void mlx4_en_stop_port(struct net_device *dev, int detach);
 672
 673 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
 674                               struct mlx4_en_stats_bitmap *stats_bitmap,
 675                               u8 rx_ppp, u8 rx_pause,
 676                               u8 tx_ppp, u8 tx_pause);
 677
 678 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
 679                                 struct mlx4_en_priv *tmp,
 680                                 struct mlx4_en_port_profile *prof);
 681 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
 682                                     struct mlx4_en_priv *tmp);
 683
 684 int mlx4_en_create_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq **pcq,
 685                       int entries, int ring, enum cq_type mode, int node);
 686 void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq **pcq);
 687 int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
 688                         int cq_idx);
 689 void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
 690 int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
 691 int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
 692
 693 void mlx4_en_tx_irq(struct mlx4_cq *mcq);
 694 u16 mlx4_en_select_queue(struct net_device *dev, struct sk_buff *skb,
 695                          void *accel_priv, select_queue_fallback_t fallback);
 696 netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev);
 697 netdev_tx_t mlx4_en_xmit_frame(struct mlx4_en_rx_alloc *frame,
 698                                struct net_device *dev, unsigned int length,
 699                                int tx_ind, int *doorbell_pending);
 700 void mlx4_en_xmit_doorbell(struct mlx4_en_tx_ring *ring);
 701 bool mlx4_en_rx_recycle(struct mlx4_en_rx_ring *ring,
 702                         struct mlx4_en_rx_alloc *frame);
 703
 704 int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
 705                            struct mlx4_en_tx_ring **pring,
 706                            u32 size, u16 stride,
 707                            int node, int queue_index);
 708 void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv,
 709                              struct mlx4_en_tx_ring **pring);
 710 int mlx4_en_activate_tx_ring(struct mlx4_en_priv *priv,
 711                              struct mlx4_en_tx_ring *ring,
 712                              int cq, int user_prio);
 713 void mlx4_en_deactivate_tx_ring(struct mlx4_en_priv *priv,
 714                                 struct mlx4_en_tx_ring *ring);
 715 void mlx4_en_set_num_rx_rings(struct mlx4_en_dev *mdev);
 716 void mlx4_en_recover_from_oom(struct mlx4_en_priv *priv);
 717 int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
 718                            struct mlx4_en_rx_ring **pring,
 719                            u32 size, u16 stride, int node);
 720 void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv,
 721                              struct mlx4_en_rx_ring **pring,
 722                              u32 size, u16 stride);
 723 int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv);
 724 void mlx4_en_deactivate_rx_ring(struct mlx4_en_priv *priv,
 725                                 struct mlx4_en_rx_ring *ring);
 726 int mlx4_en_process_rx_cq(struct net_device *dev,
 727                           struct mlx4_en_cq *cq,
 728                           int budget);
 729 int mlx4_en_poll_rx_cq(struct napi_struct *napi, int budget);
 730 int mlx4_en_poll_tx_cq(struct napi_struct *napi, int budget);
 731 u32 mlx4_en_free_tx_desc(struct mlx4_en_priv *priv,
 732                          struct mlx4_en_tx_ring *ring,
 733                          int index, u8 owner, u64 timestamp,
 734                          int napi_mode);
 735 u32 mlx4_en_recycle_tx_desc(struct mlx4_en_priv *priv,
 736                             struct mlx4_en_tx_ring *ring,
 737                             int index, u8 owner, u64 timestamp,
 738                             int napi_mode);
 739 void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
 740                 int is_tx, int rss, int qpn, int cqn, int user_prio,
 741                 struct mlx4_qp_context *context);
 742 void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event);
 743 int mlx4_en_change_mcast_lb(struct mlx4_en_priv *priv, struct mlx4_qp *qp,
 744                             int loopback);
 745 void mlx4_en_calc_rx_buf(struct net_device *dev);
 746 int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv);
 747 void mlx4_en_release_rss_steer(struct mlx4_en_priv *priv);
 748 int mlx4_en_create_drop_qp(struct mlx4_en_priv *priv);
 749 void mlx4_en_destroy_drop_qp(struct mlx4_en_priv *priv);
 750 int mlx4_en_free_tx_buf(struct net_device *dev, struct mlx4_en_tx_ring *ring);
 751 void mlx4_en_rx_irq(struct mlx4_cq *mcq);
 752
 753 int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port, u64 mac, u64 clear, u8 mode);
 754 int mlx4_SET_VLAN_FLTR(struct mlx4_dev *dev, struct mlx4_en_priv *priv);
 755
 756 int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset);
 757 int mlx4_en_QUERY_PORT(struct mlx4_en_dev *mdev, u8 port);
 758
 759 #ifdef CONFIG_MLX4_EN_DCB
 760 extern const struct dcbnl_rtnl_ops mlx4_en_dcbnl_ops;
 761 extern const struct dcbnl_rtnl_ops mlx4_en_dcbnl_pfc_ops;
 762 #endif
 763
 764 int mlx4_en_setup_tc(struct net_device *dev, u8 up);
 765
 766 #ifdef CONFIG_RFS_ACCEL
 767 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv);
 768 #endif
 769
 770 #define MLX4_EN_NUM_SELF_TEST   5
 771 void mlx4_en_ex_selftest(struct net_device *dev, u32 *flags, u64 *buf);
 772 void mlx4_en_ptp_overflow_check(struct mlx4_en_dev *mdev);
 773
 774 #define DEV_FEATURE_CHANGED(dev, new_features, feature) \
 775         ((dev->features & feature) ^ (new_features & feature))
 776
 777 int mlx4_en_reset_config(struct net_device *dev,
 778                          struct hwtstamp_config ts_config,
 779                          netdev_features_t new_features);
 780 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
 781                                      struct mlx4_en_stats_bitmap *stats_bitmap,
 782                                      u8 rx_ppp, u8 rx_pause,
 783                                      u8 tx_ppp, u8 tx_pause);
 784 int mlx4_en_netdev_event(struct notifier_block *this,
 785                          unsigned long event, void *ptr);
 786
 787 /*
 788  * Functions for time stamping
 789  */
 790 u64 mlx4_en_get_cqe_ts(struct mlx4_cqe *cqe);
 791 void mlx4_en_fill_hwtstamps(struct mlx4_en_dev *mdev,
 792                             struct skb_shared_hwtstamps *hwts,
 793                             u64 timestamp);
 794 void mlx4_en_init_timestamp(struct mlx4_en_dev *mdev);
 795 void mlx4_en_remove_timestamp(struct mlx4_en_dev *mdev);
 796
 797 /* Globals
 798  */
 799 extern const struct ethtool_ops mlx4_en_ethtool_ops;
 800
 801
 802
 803 /*
 804  * printk / logging functions
 805  */
 806
 807 __printf(3, 4)
 808 void en_print(const char *level, const struct mlx4_en_priv *priv,
 809               const char *format, ...);
 810
 811 #define en_dbg(mlevel, priv, format, ...)                               \
 812 do {                                                                    \
 813         if (NETIF_MSG_##mlevel & (priv)->msg_enable)                    \
 814                 en_print(KERN_DEBUG, priv, format, ##__VA_ARGS__);      \
 815 } while (0)
 816 #define en_warn(priv, format, ...)                                      \
 817         en_print(KERN_WARNING, priv, format, ##__VA_ARGS__)
 818 #define en_err(priv, format, ...)                                       \
 819         en_print(KERN_ERR, priv, format, ##__VA_ARGS__)
 820 #define en_info(priv, format, ...)                                      \
 821         en_print(KERN_INFO, priv, format, ##__VA_ARGS__)
 822
 823 #define mlx4_err(mdev, format, ...)                                     \
 824         pr_err(DRV_NAME " %s: " format,                                 \
 825                dev_name(&(mdev)->pdev->dev), ##__VA_ARGS__)
 826 #define mlx4_info(mdev, format, ...)                                    \
 827         pr_info(DRV_NAME " %s: " format,                                \
 828                 dev_name(&(mdev)->pdev->dev), ##__VA_ARGS__)
 829 #define mlx4_warn(mdev, format, ...)                                    \
 830         pr_warn(DRV_NAME " %s: " format,                                \
 831                 dev_name(&(mdev)->pdev->dev), ##__VA_ARGS__)
 832
 833 #endif