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net/mlx5: Bridge, extract VLAN pop code to dedicated functions

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Following patches in series need to pop VLAN when packet misses on egress.
To reuse existing bridge VLAN pop handling code, extract it to dedicated
helpers mlx5_esw_bridge_pkt_reformat_vlan_pop_supported() and
mlx5_esw_bridge_pkt_reformat_vlan_pop_create().

Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Vlad Buslov 2021-09-02 11:12:16 +03:00 committed by Saeed Mahameed
parent a1a6e7217e
commit 64fc4b3589
1 changed files with 22 additions and 12 deletions
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34
drivers/net/ethernet/mellanox/mlx5/core/esw/bridge.c
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@ -86,6 +86,26 @@ mlx5_esw_bridge_fdb_del_notify(struct mlx5_esw_bridge_fdb_entry *entry)
SWITCHDEV_FDB_DEL_TO_BRIDGE);
}
static bool mlx5_esw_bridge_pkt_reformat_vlan_pop_supported(struct mlx5_eswitch *esw)
{
return BIT(MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, reformat_remove)) &&
MLX5_CAP_GEN_2(esw->dev, max_reformat_remove_size) >= sizeof(struct vlan_hdr) &&
MLX5_CAP_GEN_2(esw->dev, max_reformat_remove_offset) >=
offsetof(struct vlan_ethhdr, h_vlan_proto);
}
static struct mlx5_pkt_reformat *
mlx5_esw_bridge_pkt_reformat_vlan_pop_create(struct mlx5_eswitch *esw)
{
struct mlx5_pkt_reformat_params reformat_params = {};
reformat_params.type = MLX5_REFORMAT_TYPE_REMOVE_HDR;
reformat_params.param_0 = MLX5_REFORMAT_CONTEXT_ANCHOR_MAC_START;
reformat_params.param_1 = offsetof(struct vlan_ethhdr, h_vlan_proto);
reformat_params.size = sizeof(struct vlan_hdr);
return mlx5_packet_reformat_alloc(esw->dev, &reformat_params, MLX5_FLOW_NAMESPACE_FDB);
}
static struct mlx5_flow_table *
mlx5_esw_bridge_table_create(int max_fte, u32 level, struct mlx5_eswitch *esw)
{
@ -800,24 +820,14 @@ mlx5_esw_bridge_vlan_push_cleanup(struct mlx5_esw_bridge_vlan *vlan, struct mlx5
static int
mlx5_esw_bridge_vlan_pop_create(struct mlx5_esw_bridge_vlan *vlan, struct mlx5_eswitch *esw)
{
struct mlx5_pkt_reformat_params reformat_params = {};
struct mlx5_pkt_reformat *pkt_reformat;
if (!BIT(MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, reformat_remove)) ||
MLX5_CAP_GEN_2(esw->dev, max_reformat_remove_size) < sizeof(struct vlan_hdr) ||
MLX5_CAP_GEN_2(esw->dev, max_reformat_remove_offset) <
offsetof(struct vlan_ethhdr, h_vlan_proto)) {
if (!mlx5_esw_bridge_pkt_reformat_vlan_pop_supported(esw)) {
esw_warn(esw->dev, "Packet reformat REMOVE_HEADER is not supported\n");
return -EOPNOTSUPP;
}
reformat_params.type = MLX5_REFORMAT_TYPE_REMOVE_HDR;
reformat_params.param_0 = MLX5_REFORMAT_CONTEXT_ANCHOR_MAC_START;
reformat_params.param_1 = offsetof(struct vlan_ethhdr, h_vlan_proto);
reformat_params.size = sizeof(struct vlan_hdr);
pkt_reformat = mlx5_packet_reformat_alloc(esw->dev,
&reformat_params,
MLX5_FLOW_NAMESPACE_FDB);
pkt_reformat = mlx5_esw_bridge_pkt_reformat_vlan_pop_create(esw);
if (IS_ERR(pkt_reformat)) {
esw_warn(esw->dev, "Failed to alloc packet reformat REMOVE_HEADER (err=%ld)\n",
PTR_ERR(pkt_reformat));