diff options
| author |   Yossi Kuperman <yossiku@mellanox.com> | 2017-10-22 19:45:45 +0300 |
|---|---|---|
| committer |   Saeed Mahameed <saeedm@mellanox.com> | 2018-03-07 15:53:18 -0800 |
| commit | 788a8210764ce2977095010931959c87b60c2f51 (patch) | |
| tree | 96d961776baccf9e6d88f6b6283e4fa1d7b307af /drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c | |
| parent | net/mlx5: IPSec, Generalize sandbox QP commands (diff) | |
| download | wireguard-linux-788a8210764ce2977095010931959c87b60c2f51.tar.xz wireguard-linux-788a8210764ce2977095010931959c87b60c2f51.zip | |
net/mlx5e: IPSec, Add support for ESP trailer removal by hardware
Current hardware decrypts and authenticates incoming ESP packets.
Subsequently, the software extracts the nexthdr field, truncates the
trailer and adjusts csum accordingly.
With this patch and a capable device, the trailer is being removed
by the hardware and the nexthdr field is conveyed via PET. This way
we avoid both the need to access the trailer (cache miss) and to
compute its relative checksum, which significantly improve
the performance.
Experiment shows that trailer removal improves the performance by
2Gbps, (netperf). Both forwarding and host-to-host configurations.
Signed-off-by: Yossi Kuperman <yossiku@mellanox.com>
Signed-off-by: Aviad Yehezkel <aviadye@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c index 6a7c8b04447e..64c549a06678 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c @@ -42,10 +42,11 @@ enum { MLX5E_IPSEC_RX_SYNDROME_DECRYPTED = 0x11, MLX5E_IPSEC_RX_SYNDROME_AUTH_FAILED = 0x12, + MLX5E_IPSEC_RX_SYNDROME_BAD_PROTO = 0x17, }; struct mlx5e_ipsec_rx_metadata { - unsigned char reserved; + unsigned char nexthdr; __be32 sa_handle; } __packed; @@ -301,10 +302,17 @@ mlx5e_ipsec_build_sp(struct net_device *netdev, struct sk_buff *skb, switch (mdata->syndrome) { case MLX5E_IPSEC_RX_SYNDROME_DECRYPTED: xo->status = CRYPTO_SUCCESS; + if (likely(priv->ipsec->no_trailer)) { + xo->flags |= XFRM_ESP_NO_TRAILER; + xo->proto = mdata->content.rx.nexthdr; + } break; case MLX5E_IPSEC_RX_SYNDROME_AUTH_FAILED: xo->status = CRYPTO_TUNNEL_ESP_AUTH_FAILED; break; + case MLX5E_IPSEC_RX_SYNDROME_BAD_PROTO: + xo->status = CRYPTO_INVALID_PROTOCOL; + break; default: atomic64_inc(&priv->ipsec->sw_stats.ipsec_rx_drop_syndrome); return NULL; |