LXR linux/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h

   1/*
   2 * Copyright (c) 2015, Mellanox Technologies, Ltd.  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#ifndef __MLX5_ESWITCH_H__
  34#define __MLX5_ESWITCH_H__
  35
  36#include <linux/if_ether.h>
  37#include <linux/if_link.h>
  38#include <linux/mlx5/device.h>
  39
  40#define MLX5_MAX_UC_PER_VPORT(dev) \
  41        (1 << MLX5_CAP_GEN(dev, log_max_current_uc_list))
  42
  43#define MLX5_MAX_MC_PER_VPORT(dev) \
  44        (1 << MLX5_CAP_GEN(dev, log_max_current_mc_list))
  45
  46#define MLX5_L2_ADDR_HASH_SIZE (BIT(BITS_PER_BYTE))
  47#define MLX5_L2_ADDR_HASH(addr) (addr[5])
  48
  49/* L2 -mac address based- hash helpers */
  50struct l2addr_node {
  51        struct hlist_node hlist;
  52        u8                addr[ETH_ALEN];
  53};
  54
  55#define for_each_l2hash_node(hn, tmp, hash, i) \
  56        for (i = 0; i < MLX5_L2_ADDR_HASH_SIZE; i++) \
  57                hlist_for_each_entry_safe(hn, tmp, &hash[i], hlist)
  58
  59#define l2addr_hash_find(hash, mac, type) ({                \
  60        int ix = MLX5_L2_ADDR_HASH(mac);                    \
  61        bool found = false;                                 \
  62        type *ptr = NULL;                                   \
  63                                                            \
  64        hlist_for_each_entry(ptr, &hash[ix], node.hlist)    \
  65                if (ether_addr_equal(ptr->node.addr, mac)) {\
  66                        found = true;                       \
  67                        break;                              \
  68                }                                           \
  69        if (!found)                                         \
  70                ptr = NULL;                                 \
  71        ptr;                                                \
  72})
  73
  74#define l2addr_hash_add(hash, mac, type, gfp) ({            \
  75        int ix = MLX5_L2_ADDR_HASH(mac);                    \
  76        type *ptr = NULL;                                   \
  77                                                            \
  78        ptr = kzalloc(sizeof(type), gfp);                   \
  79        if (ptr) {                                          \
  80                ether_addr_copy(ptr->node.addr, mac);       \
  81                hlist_add_head(&ptr->node.hlist, &hash[ix]);\
  82        }                                                   \
  83        ptr;                                                \
  84})
  85
  86#define l2addr_hash_del(ptr) ({                             \
  87        hlist_del(&ptr->node.hlist);                        \
  88        kfree(ptr);                                         \
  89})
  90
  91struct mlx5_vport {
  92        struct mlx5_core_dev    *dev;
  93        int                     vport;
  94        struct hlist_head       uc_list[MLX5_L2_ADDR_HASH_SIZE];
  95        struct hlist_head       mc_list[MLX5_L2_ADDR_HASH_SIZE];
  96        struct work_struct      vport_change_handler;
  97
  98        /* This spinlock protects access to vport data, between
  99         * "esw_vport_disable" and ongoing interrupt "mlx5_eswitch_vport_event"
 100         * once vport marked as disabled new interrupts are discarded.
 101         */
 102        spinlock_t              lock; /* vport events sync */
 103        bool                    enabled;
 104        u16                     enabled_events;
 105};
 106
 107struct mlx5_l2_table {
 108        struct hlist_head l2_hash[MLX5_L2_ADDR_HASH_SIZE];
 109        u32                  size;
 110        unsigned long        *bitmap;
 111};
 112
 113struct mlx5_eswitch_fdb {
 114        void *fdb;
 115        struct mlx5_flow_group *addr_grp;
 116};
 117
 118struct mlx5_eswitch {
 119        struct mlx5_core_dev    *dev;
 120        struct mlx5_l2_table    l2_table;
 121        struct mlx5_eswitch_fdb fdb_table;
 122        struct hlist_head       mc_table[MLX5_L2_ADDR_HASH_SIZE];
 123        struct workqueue_struct *work_queue;
 124        struct mlx5_vport       *vports;
 125        int                     total_vports;
 126        int                     enabled_vports;
 127};
 128
 129/* E-Switch API */
 130int mlx5_eswitch_init(struct mlx5_core_dev *dev);
 131void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw);
 132void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe);
 133int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs);
 134void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw);
 135int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
 136                               int vport, u8 mac[ETH_ALEN]);
 137int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw,
 138                                 int vport, int link_state);
 139int mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw,
 140                                int vport, u16 vlan, u8 qos);
 141int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
 142                                  int vport, struct ifla_vf_info *ivi);
 143int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw,
 144                                 int vport,
 145                                 struct ifla_vf_stats *vf_stats);
 146
 147#endif /* __MLX5_ESWITCH_H__ */
 148