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net/mlx5: E-Switch: Introduce prio tag mode

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Current ConnectX HW is unable to perform VLAN pop in TX path and VLAN
push on RX path. To workaround that limitation untagged packets will be
tagged with VLAN ID 0x000 (priority tag) and pop/push actions will be
replaced by VLAN re-write actions (which are supported by the HW).
Introduce prio tag mode as a pre-step to controlling the workaround
behavior.

Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Eli Britstein 2019-04-29 18:14:01 +00:00 committed by Saeed Mahameed
parent 96780e4f46
commit 316793fb2d
1 changed files with 3 additions and 1 deletions
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4
include/linux/mlx5/mlx5_ifc.h
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@ -951,7 +951,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 log_max_srq_sz[0x8]; u8 log_max_srq_sz[0x8];
u8 log_max_qp_sz[0x8]; u8 log_max_qp_sz[0x8];
u8 reserved_at_90[0xb]; u8 reserved_at_90[0x8];
u8 prio_tag_required[0x1];
u8 reserved_at_99[0x2];
u8 log_max_qp[0x5]; u8 log_max_qp[0x5];
u8 reserved_at_a0[0xb]; u8 reserved_at_a0[0xb];