From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
>From Mark,
This series exposes the ability to create flow actions which can
mutate packet headers. We do that by exposing two new verbs:
* modify header - can change existing packet headers. packet
* reformat - can encapsulate or decapsulate a packet.
Once created a flow action must be attached to a steering
rule for it to take effect.
The first 10 patches refactor mlx5_core code, rename internal structures
to better reflect their operation and export needed functions so the
RDMA side can allocate the action.
The last 5 patches expose via the IOCTL infrastructure mlx5_ib methods
which do the actual allocation of resources and return an handle to the
user. A user of this API is expected to know how to work with the
device's spec as the input to those function is HW depended.
An example usage of the modify header action is routing, A user can
create an action which edits the L2 header and decrease the TTL.
An example usage of the packet reformat action is VXLAN encap/decap
which is done by the HW.
Changelog:
v0 -> v1:
* Patch 1: Addressed Saeed's comments and simplified the logic.
* Patch 2: Changed due to changes in patch 1.
Split the 27 patch series into 3, this is the first one
which just lets the user create flow action.
Other than that styling fixes mainly in the RDMA patches
to make sure 80 chars limit isn't exceeded.
RFC -> v0:
* Patch 1 a new patch which refactors the logic
when getting a flow namespace.
* Patch 2 was split into two.
* Patch 3: Fixed a typo in commit message
* Patch 5: Updated commit message
* Patch 7: Updated commit message
Renamed:
- MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT_ID to
MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT
- packet_reformat_id to reformat_id in struct mlx5_flow_act
- packet_reformat_id to encap_id in struct mlx5_esw_flow_attr
- packet_reformat_id to encap_id in struct mlx5e_encap_entry
- PACKET_REFORMAT to REFORMAT when printing trace points
* Patch 9: Updated commit message
Updated function declaration in mlx5_core.h, could of lead
to compile error on bisection.
* Patch 11: Disallow egress rules insertion when in switchdev mode
* Patch 12: A new patch to deal with passing enum values using
the IOCTL infrastructure.
* Patch 13: Use new enum value attribute when passing enum
mlx5_ib_uapi_flow_table_type
* Patch 15: Don't set encap flags on flow tables if in switchdev mode
* Patch 17: Use new enum value attribute when passing enum
mlx5_ib_uapi_flow_table_type and enum
mlx5_ib_uapi_flow_action_packet_reformat_type
* Patch 19: Allow creation of both
MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL
and MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2
packet
reformat actions.
* Patch 20: A new patch which allows attaching packet reformat
actions to flow tables on NIC RX.
Thanks
Mark Bloch (15):
net/mlx5: Cleanup flow namespace getter switch logic
net/mlx5: Add proper NIC TX steering flow tables support
net/mlx5: Export modify header alloc/dealloc functions
net/mlx5: Add support for more namespaces when allocating modify
header
net/mlx5: Break encap/decap into two separated flow table creation
flags
net/mlx5: Move header encap type to IFC header file
{net, RDMA}/mlx5: Rename encap to reformat packet
net/mlx5: Expose new packet reformat capabilities
net/mlx5: Pass a namespace for packet reformat ID allocation
net/mlx5: Export packet reformat alloc/dealloc functions
RDMA/uverbs: Add UVERBS_ATTR_CONST_IN to the specs language
RDMA/mlx5: Add a new flow action verb - modify header
RDMA/uverbs: Add generic function to fill in flow action object
RDMA/mlx5: Add new flow action verb - packet reformat
RDMA/mlx5: Extend packet reformat verbs
drivers/infiniband/core/uverbs_ioctl.c | 23 ++
.../infiniband/core/uverbs_std_types_flow_action.c | 7 +-
drivers/infiniband/hw/mlx5/devx.c | 6 +-
drivers/infiniband/hw/mlx5/flow.c | 301 +++++++++++++++++++++
drivers/infiniband/hw/mlx5/main.c | 3 +
drivers/infiniband/hw/mlx5/mlx5_ib.h | 19 +-
drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 8 +-
.../mellanox/mlx5/core/diag/fs_tracepoint.h | 2 +-
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 51 ++--
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 2 +-
.../ethernet/mellanox/mlx5/core/eswitch_offloads.c | 9 +-
drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c | 87 +++---
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 73 +++--
.../net/ethernet/mellanox/mlx5/core/mlx5_core.h | 12 +-
include/linux/mlx5/device.h | 6 +
include/linux/mlx5/fs.h | 20 +-
include/linux/mlx5/mlx5_ifc.h | 70 +++--
include/rdma/uverbs_ioctl.h | 40 +++
include/rdma/uverbs_std_types.h | 12 +
include/uapi/rdma/mlx5_user_ioctl_cmds.h | 18 ++
include/uapi/rdma/mlx5_user_ioctl_verbs.h | 12 +
21 files changed, 638 insertions(+), 143 deletions(-)
--
2.14.4
