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Message-Id: <20180716082305.11744-18-leon@kernel.org>
Date: Mon, 16 Jul 2018 11:23:04 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Doug Ledford <dledford@...hat.com>,
Jason Gunthorpe <jgg@...lanox.com>
Cc: Leon Romanovsky <leonro@...lanox.com>,
RDMA mailing list <linux-rdma@...r.kernel.org>,
Mark Bloch <markb@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>,
linux-netdev <netdev@...r.kernel.org>
Subject: [RFC PATCH rdma-next 17/18] RDMA/mlx5: Extend packet reformat verbs
From: Mark Bloch <markb@...lanox.com>
We expose new actions:
L2_TO_L2_TUNNEL - A generic encap from L2 to L2, the data passed should
be the encapsulating headers.
L3_TUNNEL_TO_L2 - Will do decap where the inner packet starts from L3,
the data should be mac or mac + vlan (14 or 18 bytes).
L2_TO_L3_TUNNEL - Will do encap where is L2 of the original packet will
not be included, the data should be the encapsulating header.
Signed-off-by: Mark Bloch <markb@...lanox.com>
Signed-off-by: Leon Romanovsky <leonro@...lanox.com>
---
drivers/infiniband/hw/mlx5/flow.c | 85 +++++++++++++++++++++++++++++++
drivers/infiniband/hw/mlx5/mlx5_ib.h | 1 +
include/uapi/rdma/mlx5_user_ioctl_cmds.h | 1 +
include/uapi/rdma/mlx5_user_ioctl_verbs.h | 3 ++
4 files changed, 90 insertions(+)
diff --git a/drivers/infiniband/hw/mlx5/flow.c b/drivers/infiniband/hw/mlx5/flow.c
index 263b86db7c60..9f20907dccff 100644
--- a/drivers/infiniband/hw/mlx5/flow.c
+++ b/drivers/infiniband/hw/mlx5/flow.c
@@ -201,6 +201,10 @@ void mlx5_ib_destroy_flow_action_raw(struct mlx5_ib_flow_action *maction)
mlx5_modify_header_dealloc(maction->flow_action_raw.dev->mdev,
maction->flow_action_raw.action_id);
break;
+ case MLX5_IB_FLOW_ACTION_PACKET_REFORMAT:
+ mlx5_packet_reformat_dealloc(maction->flow_action_raw.dev->mdev,
+ maction->flow_action_raw.action_id);
+ break;
case MLX5_IB_FLOW_ACTION_DECAP:
break;
default:
@@ -287,6 +291,11 @@ static bool mlx5_ib_flow_action_packet_reformat_valid(struct mlx5_ib_dev *ibdev,
u8 ft_type)
{
switch (packet_reformat_type) {
+ case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
+ if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
+ return MLX5_CAP_FLOWTABLE(ibdev->mdev,
+ encap_general_header);
+ break;
case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2:
if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev, decap);
@@ -298,6 +307,55 @@ static bool mlx5_ib_flow_action_packet_reformat_valid(struct mlx5_ib_dev *ibdev,
return false;
}
+static int mlx5_ib_dv_to_prm_packet_reforamt_type(u8 dv_prt, u8 *prm_prt)
+{
+ switch (dv_prt) {
+ case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
+ *prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;
+ break;
+ case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
+ *prm_prt = MLX5_REFORMAT_TYPE_L3_TUNNEL_TO_L2;
+ break;
+ case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
+ *prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int mlx5_ib_flow_action_create_packet_reformat_ctx(struct mlx5_ib_dev *dev,
+ struct mlx5_ib_flow_action *maction,
+ u8 ft_type, u8 dv_prt,
+ void *in, size_t len)
+{
+ u8 namespace;
+ u8 prm_prt;
+ int ret;
+
+ ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
+ if (ret)
+ return ret;
+
+ ret = mlx5_ib_dv_to_prm_packet_reforamt_type(dv_prt, &prm_prt);
+ if (ret)
+ return ret;
+
+ ret = mlx5_packet_reformat_alloc(dev->mdev, prm_prt, len,
+ in, namespace,
+ &maction->flow_action_raw.action_id);
+ if (ret)
+ return ret;
+
+ maction->flow_action_raw.sub_type =
+ MLX5_IB_FLOW_ACTION_PACKET_REFORMAT;
+ maction->flow_action_raw.dev = dev;
+
+ return 0;
+}
+
static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)(struct ib_device *ib_dev,
struct ib_uverbs_file *file,
struct uverbs_attr_bundle *attrs)
@@ -306,6 +364,7 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)(str
MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE);
struct mlx5_ib_dev *mdev = to_mdev(uobj->context->device);
struct mlx5_ib_flow_action *maction;
+ int ret = 0;
u8 ft_type;
u8 dv_prt;
@@ -327,12 +386,35 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)(str
maction->flow_action_raw.sub_type =
MLX5_IB_FLOW_ACTION_DECAP;
maction->flow_action_raw.dev = mdev;
+ } else {
+ void *in;
+ int len;
+
+ if (!uverbs_attr_is_valid(attrs,
+ MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_PRM)) {
+ ret = -EINVAL;
+ goto free_maction;
+ }
+
+ in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_PRM);
+ len = uverbs_attr_get_len(attrs, MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_PRM);
+
+ ret = mlx5_ib_flow_action_create_packet_reformat_ctx(mdev, maction,
+ ft_type,
+ dv_prt, in,
+ len);
+ if (ret)
+ goto free_maction;
}
uverbs_flow_action_fill_action(&maction->ib_action, uobj,
uobj->context->device,
IB_FLOW_ACTION_UNSPECIFIED);
return 0;
+
+free_maction:
+ kfree(maction);
+ return ret;
}
DECLARE_UVERBS_NAMED_METHOD(
@@ -389,6 +471,9 @@ DECLARE_UVERBS_NAMED_METHOD(
UVERBS_OBJECT_FLOW_ACTION,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
+ UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_PRM,
+ UVERBS_ATTR_MIN_SIZE(1),
+ UA_ALLOC_AND_COPY),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE,
/* See enum mlx5_ib_uapi_flow_action_packet_reformat_type */
UVERBS_ATTR_TYPE(u8),
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 56ee65023d94..b12ea4838d25 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -153,6 +153,7 @@ struct mlx5_ib_pd {
enum {
MLX5_IB_FLOW_ACTION_MODIFY_HEADER,
+ MLX5_IB_FLOW_ACTION_PACKET_REFORMAT,
MLX5_IB_FLOW_ACTION_DECAP,
};
diff --git a/include/uapi/rdma/mlx5_user_ioctl_cmds.h b/include/uapi/rdma/mlx5_user_ioctl_cmds.h
index 40db7fca3d0b..67c1ed12af72 100644
--- a/include/uapi/rdma/mlx5_user_ioctl_cmds.h
+++ b/include/uapi/rdma/mlx5_user_ioctl_cmds.h
@@ -181,6 +181,7 @@ enum mlx5_ib_create_flow_action_create_packet_reformat_attrs {
MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE,
MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE,
+ MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_PRM,
};
#endif
diff --git a/include/uapi/rdma/mlx5_user_ioctl_verbs.h b/include/uapi/rdma/mlx5_user_ioctl_verbs.h
index b5fda0fcd484..4ef62c0e8452 100644
--- a/include/uapi/rdma/mlx5_user_ioctl_verbs.h
+++ b/include/uapi/rdma/mlx5_user_ioctl_verbs.h
@@ -46,6 +46,9 @@ enum mlx5_ib_uapi_flow_table_type {
enum mlx5_ib_uapi_flow_action_packet_reformat_type {
MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2 = 0x0,
+ MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL = 0x1,
+ MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2 = 0x2,
+ MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL = 0x3,
};
#endif
--
2.14.4
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