The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/mlx5/mlx5_core/eswitch.h

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    1 /*-
    2  * Copyright (c) 2013-2017, Mellanox Technologies, Ltd.  All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
   14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   16  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
   17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   23  * SUCH DAMAGE.
   24  *
   25  * $FreeBSD$
   26  */
   27 
   28 #ifndef __MLX5_ESWITCH_H__
   29 #define __MLX5_ESWITCH_H__
   30 
   31 #include <linux/if_ether.h>
   32 #include <dev/mlx5/device.h>
   33 
   34 #define MLX5_MAX_UC_PER_VPORT(dev) \
   35         (1 << MLX5_CAP_GEN(dev, log_max_current_uc_list))
   36 
   37 #define MLX5_MAX_MC_PER_VPORT(dev) \
   38         (1 << MLX5_CAP_GEN(dev, log_max_current_mc_list))
   39 
   40 #define MLX5_L2_ADDR_HASH_SIZE (BIT(BITS_PER_BYTE))
   41 #define MLX5_L2_ADDR_HASH(addr) (addr[5])
   42 
   43 /* L2 -mac address based- hash helpers */
   44 struct l2addr_node {
   45         struct hlist_node hlist;
   46         u8                addr[ETH_ALEN];
   47 };
   48 
   49 #define for_each_l2hash_node(hn, tmp, hash, i) \
   50         for (i = 0; i < MLX5_L2_ADDR_HASH_SIZE; i++) \
   51                 hlist_for_each_entry_safe(hn, tmp, &hash[i], hlist)
   52 
   53 #define l2addr_hash_find(hash, mac, type) ({                \
   54         int ix = MLX5_L2_ADDR_HASH(mac);                    \
   55         bool found = false;                                 \
   56         type *ptr = NULL;                                   \
   57                                                             \
   58         hlist_for_each_entry(ptr, &hash[ix], node.hlist)    \
   59                 if (ether_addr_equal(ptr->node.addr, mac)) {\
   60                         found = true;                       \
   61                         break;                              \
   62                 }                                           \
   63         if (!found)                                         \
   64                 ptr = NULL;                                 \
   65         ptr;                                                \
   66 })
   67 
   68 #define l2addr_hash_add(hash, mac, type, gfp) ({            \
   69         int ix = MLX5_L2_ADDR_HASH(mac);                    \
   70         type *ptr = NULL;                                   \
   71                                                             \
   72         ptr = kzalloc(sizeof(type), gfp);                   \
   73         if (ptr) {                                          \
   74                 ether_addr_copy(ptr->node.addr, mac);       \
   75                 hlist_add_head(&ptr->node.hlist, &hash[ix]);\
   76         }                                                   \
   77         ptr;                                                \
   78 })
   79 
   80 #define l2addr_hash_del(ptr) ({                             \
   81         hlist_del(&ptr->node.hlist);                        \
   82         kfree(ptr);                                         \
   83 })
   84 
   85 struct vport_ingress {
   86         struct mlx5_flow_table *acl;
   87         struct mlx5_flow_group *drop_grp;
   88         struct mlx5_flow_rule  *drop_rule;
   89 };
   90 
   91 struct vport_egress {
   92         struct mlx5_flow_table *acl;
   93         struct mlx5_flow_group *allowed_vlans_grp;
   94         struct mlx5_flow_group *drop_grp;
   95         struct mlx5_flow_rule  *allowed_vlan;
   96         struct mlx5_flow_rule  *drop_rule;
   97 };
   98 
   99 struct mlx5_vport {
  100         struct mlx5_core_dev    *dev;
  101         int                     vport;
  102         struct hlist_head       uc_list[MLX5_L2_ADDR_HASH_SIZE];
  103         struct hlist_head       mc_list[MLX5_L2_ADDR_HASH_SIZE];
  104         struct work_struct      vport_change_handler;
  105 
  106         struct vport_ingress    ingress;
  107         struct vport_egress     egress;
  108 
  109         u16                     vlan;
  110         u8                      qos;
  111         struct mutex    state_lock; /* protect dynamic state changes */
  112         /* This spinlock protects access to vport data, between
  113          * "esw_vport_disable" and ongoing interrupt "mlx5_eswitch_vport_event"
  114          * once vport marked as disabled new interrupts are discarded.
  115          */
  116         spinlock_t              lock; /* vport events sync */
  117         bool                    enabled;
  118         u16                     enabled_events;
  119 };
  120 
  121 struct mlx5_l2_table {
  122         struct hlist_head l2_hash[MLX5_L2_ADDR_HASH_SIZE];
  123         u32                  size;
  124         unsigned long        *bitmap;
  125 };
  126 
  127 struct mlx5_eswitch_fdb {
  128         void *fdb;
  129         struct mlx5_flow_group *addr_grp;
  130 };
  131 
  132 struct mlx5_eswitch {
  133         struct mlx5_core_dev    *dev;
  134         struct mlx5_l2_table    l2_table;
  135         struct mlx5_eswitch_fdb fdb_table;
  136         struct hlist_head       mc_table[MLX5_L2_ADDR_HASH_SIZE];
  137         struct workqueue_struct *work_queue;
  138         struct mlx5_vport       *vports;
  139         int                     total_vports;
  140         int                     enabled_vports;
  141 };
  142 
  143 struct mlx5_esw_vport_info {
  144         __u32 vf;
  145         __u8 mac[32];
  146         __u32 vlan;
  147         __u32 qos;
  148         __u32 spoofchk;
  149         __u32 linkstate;
  150         __u32 min_tx_rate;
  151         __u32 max_tx_rate;
  152 };
  153 
  154 /* E-Switch API */
  155 int mlx5_eswitch_init(struct mlx5_core_dev *dev, int total_vports);
  156 void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw);
  157 void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe);
  158 int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs);
  159 void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw);
  160 int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
  161                                int vport, u8 mac[ETH_ALEN]);
  162 int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw,
  163                                  int vport, int link_state);
  164 int mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw,
  165                                 int vport, u16 vlan, u8 qos);
  166 int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
  167                                   int vport, struct mlx5_esw_vport_info *evi);
  168 
  169 #endif /* __MLX5_ESWITCH_H__ */

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