diff options
author | Leon Romanovsky <leonro@nvidia.com> | 2023-04-13 15:29:22 +0300 |
---|---|---|
committer | Jakub Kicinski <kuba@kernel.org> | 2023-04-18 04:55:25 +0300 |
commit | 6480a3b6c90a8d2b765f802a4f30829bd539599a (patch) | |
tree | 75090a3310d433417b72191c129c3eb74a530ab5 /drivers/net/ethernet/mellanox | |
parent | 006adbc6de9f6290a542949af8f834c17e851890 (diff) | |
download | linux-6480a3b6c90a8d2b765f802a4f30829bd539599a.tar.xz |
net/mlx5e: Prepare IPsec packet reformat code for tunnel mode
Refactor setup_pkt_reformat() function to accommodate future extension
to support tunnel mode.
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/mellanox')
3 files changed, 63 insertions, 21 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c index def01bfde610..359da277c03a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c @@ -297,6 +297,7 @@ void mlx5e_ipsec_build_accel_xfrm_attrs(struct mlx5e_ipsec_sa_entry *sa_entry, attrs->upspec.sport = ntohs(x->sel.sport); attrs->upspec.sport_mask = ntohs(x->sel.sport_mask); attrs->upspec.proto = x->sel.proto; + attrs->mode = x->props.mode; mlx5e_ipsec_init_limits(sa_entry, attrs); } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h index bb89e18b17b4..ae525420a492 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h @@ -77,7 +77,7 @@ struct mlx5_replay_esn { struct mlx5_accel_esp_xfrm_attrs { u32 spi; - u32 flags; + u32 mode; struct aes_gcm_keymat aes_gcm; union { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c index 060be020ca64..6a1ed4114054 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c @@ -10,6 +10,7 @@ #include "lib/fs_chains.h" #define NUM_IPSEC_FTE BIT(15) +#define MLX5_REFORMAT_TYPE_ADD_ESP_TRANSPORT_SIZE 16 struct mlx5e_ipsec_fc { struct mlx5_fc *cnt; @@ -836,40 +837,80 @@ static int setup_modify_header(struct mlx5_core_dev *mdev, u32 val, u8 dir, return 0; } +static int +setup_pkt_transport_reformat(struct mlx5_accel_esp_xfrm_attrs *attrs, + struct mlx5_pkt_reformat_params *reformat_params) +{ + u8 *reformatbf; + __be32 spi; + + switch (attrs->dir) { + case XFRM_DEV_OFFLOAD_IN: + reformat_params->type = MLX5_REFORMAT_TYPE_DEL_ESP_TRANSPORT; + break; + case XFRM_DEV_OFFLOAD_OUT: + if (attrs->family == AF_INET) + reformat_params->type = + MLX5_REFORMAT_TYPE_ADD_ESP_TRANSPORT_OVER_IPV4; + else + reformat_params->type = + MLX5_REFORMAT_TYPE_ADD_ESP_TRANSPORT_OVER_IPV6; + + reformatbf = kzalloc(MLX5_REFORMAT_TYPE_ADD_ESP_TRANSPORT_SIZE, + GFP_KERNEL); + if (!reformatbf) + return -ENOMEM; + + /* convert to network format */ + spi = htonl(attrs->spi); + memcpy(reformatbf, &spi, sizeof(spi)); + + reformat_params->param_0 = attrs->authsize; + reformat_params->size = + MLX5_REFORMAT_TYPE_ADD_ESP_TRANSPORT_SIZE; + reformat_params->data = reformatbf; + break; + default: + return -EINVAL; + } + + return 0; +} + static int setup_pkt_reformat(struct mlx5_core_dev *mdev, struct mlx5_accel_esp_xfrm_attrs *attrs, struct mlx5_flow_act *flow_act) { - enum mlx5_flow_namespace_type ns_type = MLX5_FLOW_NAMESPACE_EGRESS; struct mlx5_pkt_reformat_params reformat_params = {}; struct mlx5_pkt_reformat *pkt_reformat; - u8 reformatbf[16] = {}; - __be32 spi; + enum mlx5_flow_namespace_type ns_type; + int ret; - if (attrs->dir == XFRM_DEV_OFFLOAD_IN) { - reformat_params.type = MLX5_REFORMAT_TYPE_DEL_ESP_TRANSPORT; + switch (attrs->dir) { + case XFRM_DEV_OFFLOAD_IN: ns_type = MLX5_FLOW_NAMESPACE_KERNEL; - goto cmd; + break; + case XFRM_DEV_OFFLOAD_OUT: + ns_type = MLX5_FLOW_NAMESPACE_EGRESS; + break; + default: + return -EINVAL; } - if (attrs->family == AF_INET) - reformat_params.type = - MLX5_REFORMAT_TYPE_ADD_ESP_TRANSPORT_OVER_IPV4; - else - reformat_params.type = - MLX5_REFORMAT_TYPE_ADD_ESP_TRANSPORT_OVER_IPV6; - - /* convert to network format */ - spi = htonl(attrs->spi); - memcpy(reformatbf, &spi, 4); + switch (attrs->mode) { + case XFRM_MODE_TRANSPORT: + ret = setup_pkt_transport_reformat(attrs, &reformat_params); + break; + default: + ret = -EINVAL; + } - reformat_params.param_0 = attrs->authsize; - reformat_params.size = sizeof(reformatbf); - reformat_params.data = &reformatbf; + if (ret) + return ret; -cmd: pkt_reformat = mlx5_packet_reformat_alloc(mdev, &reformat_params, ns_type); + kfree(reformat_params.data); if (IS_ERR(pkt_reformat)) return PTR_ERR(pkt_reformat); |