From: Max Gurtovoy <maxg@xxxxxxxxxxxx> When using the device emulation feature (introduced in Bluefield-1 SOC), a privileged function (the device emulation manager) will be able to create a channel to execute commands on behalf of the emulated function. This channel will be a general object of type VHCA_TUNNEL that will have a unique ID for each emulated function. This ID will be passed in each cmd that will be issued by the emulation SW in a well known offset in the command header. This channel is needed since the emulated function doesn't have a normal command interface to the HCA HW, but some basic configuration for that function is needed (e.g. initialize and enable the HCA). For that matter, a specific command-set was defined and only those commands will be issued by the HCA. Signed-off-by: Max Gurtovoy <maxg@xxxxxxxxxxxx> Reviewed-by: Yishai Hadas <yishaih@xxxxxxxxxxxx> Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx> --- include/linux/mlx5/mlx5_ifc.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index 5d2bf91e130b..a35e545a8de0 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -1329,7 +1329,13 @@ struct mlx5_ifc_cmd_hca_cap_bits { u8 reserved_at_6c0[0x4]; u8 flex_parser_id_geneve_tlv_option_0[0x4]; - u8 reserved_at_6c8[0x138]; + u8 reserved_at_6c8[0x18]; + + u8 reserved_at_6e0[0xa0]; + + u8 vhca_tunnel_commands[0x40]; + + u8 reserved_at_7c0[0x40]; }; enum mlx5_flow_destination_type { @@ -9560,7 +9566,7 @@ struct mlx5_ifc_general_obj_in_cmd_hdr_bits { u8 opcode[0x10]; u8 uid[0x10]; - u8 reserved_at_20[0x10]; + u8 vhca_tunnel_id[0x10]; u8 obj_type[0x10]; u8 obj_id[0x20]; -- 2.20.1