diff options
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index 933275fe03b2..55a527bda2e5 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -93,6 +93,14 @@ enum { #define MLX5E_TC_TABLE_NUM_GROUPS 4 #define MLX5E_TC_TABLE_MAX_GROUP_SIZE (1 << 16) +struct mlx5e_hairpin { + struct mlx5_hairpin *pair; + + struct mlx5_core_dev *func_mdev; + u32 tdn; + u32 tirn; +}; + struct mod_hdr_key { int num_actions; void *actions; @@ -222,6 +230,95 @@ static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv, } } +static +struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex) +{ + struct net_device *netdev; + struct mlx5e_priv *priv; + + netdev = __dev_get_by_index(net, ifindex); + priv = netdev_priv(netdev); + return priv->mdev; +} + +static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp) +{ + u32 in[MLX5_ST_SZ_DW(create_tir_in)] = {0}; + void *tirc; + int err; + + err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn); + if (err) + goto alloc_tdn_err; + + tirc = MLX5_ADDR_OF(create_tir_in, in, ctx); + + MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT); + MLX5_SET(tirc, tirc, inline_rqn, hp->pair->rqn); + MLX5_SET(tirc, tirc, transport_domain, hp->tdn); + + err = mlx5_core_create_tir(hp->func_mdev, in, MLX5_ST_SZ_BYTES(create_tir_in), &hp->tirn); + if (err) + goto create_tir_err; + + return 0; + +create_tir_err: + mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn); +alloc_tdn_err: + return err; +} + +static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp) +{ + mlx5_core_destroy_tir(hp->func_mdev, hp->tirn); + mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn); +} + +static struct mlx5e_hairpin * +mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params, + int peer_ifindex) +{ + struct mlx5_core_dev *func_mdev, *peer_mdev; + struct mlx5e_hairpin *hp; + struct mlx5_hairpin *pair; + int err; + + hp = kzalloc(sizeof(*hp), GFP_KERNEL); + if (!hp) + return ERR_PTR(-ENOMEM); + + func_mdev = priv->mdev; + peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex); + + pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params); + if (IS_ERR(pair)) { + err = PTR_ERR(pair); + goto create_pair_err; + } + hp->pair = pair; + hp->func_mdev = func_mdev; + + err = mlx5e_hairpin_create_transport(hp); + if (err) + goto create_transport_err; + + return hp; + +create_transport_err: + mlx5_core_hairpin_destroy(hp->pair); +create_pair_err: + kfree(hp); + return ERR_PTR(err); +} + +static void mlx5e_hairpin_destroy(struct mlx5e_hairpin *hp) +{ + mlx5e_hairpin_destroy_transport(hp); + mlx5_core_hairpin_destroy(hp->pair); + kvfree(hp); +} + static struct mlx5_flow_handle * mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow_parse_attr *parse_attr, |