diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mlx5/eswitch.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/mlx5/eswitch.h b/include/linux/mlx5/eswitch.h index 67e341274a22..3b20e84049c1 100644 --- a/include/linux/mlx5/eswitch.h +++ b/include/linux/mlx5/eswitch.h @@ -98,6 +98,25 @@ u32 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw, u16 vport_num); u32 mlx5_eswitch_get_vport_metadata_for_set(struct mlx5_eswitch *esw, u16 vport_num); + +/* Reg C1 usage: + * Reg C1 = < ESW_TUN_ID(12) | ESW_TUN_OPTS(12) | ESW_ZONE_ID(8) > + * + * Highest 12 bits of reg c1 is the encapsulation tunnel id, next 12 bits is + * encapsulation tunnel options, and the lowest 8 bits are used for zone id. + * + * Zone id is used to restore CT flow when packet misses on chain. + * + * Tunnel id and options are used together to restore the tunnel info metadata + * on miss and to support inner header rewrite by means of implicit chain 0 + * flows. + */ +#define ESW_ZONE_ID_BITS 8 +#define ESW_TUN_OPTS_BITS 12 +#define ESW_TUN_ID_BITS 12 +#define ESW_TUN_OFFSET ESW_ZONE_ID_BITS +#define ESW_ZONE_ID_MASK GENMASK(ESW_ZONE_ID_BITS - 1, 0) + u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev); #else /* CONFIG_MLX5_ESWITCH */ |