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net/mlx5e: IPSec, Add Innova IPSec offload TX data path
authorIlan Tayari <ilant@mellanox.com>
Tue, 18 Apr 2017 13:08:23 +0000 (16:08 +0300)
committerSaeed Mahameed <saeedm@mellanox.com>
Tue, 27 Jun 2017 13:36:48 +0000 (16:36 +0300)
commit2ac9cfe78223bb88be8cff3b59e0e13551b4e29c
tree484634d3f66c40187e2fed4dcafbb2cd3c7b20e6
parent899a59d301bc0ccd312dd23d58899cfbbc94bead
net/mlx5e: IPSec, Add Innova IPSec offload TX data path

In the TX data path, prepend a special metadata ethertype which
instructs the hardware to perform cryptography.

In addition, fill Software-Parser segment in TX descriptor so
that the hardware may parse the ESP protocol, and perform TX
checksum offload on the inner payload.

Support GSO, by providing the inverse of gso_size in the metadata.
This allows the FPGA to update the ESP header (seqno and seqiv) on the
resulting packets, by calculating the packet number within the GSO
back from the TCP sequence number.

Note that for GSO SKBs, the stack does not include an ESP trailer,
unlike the non-GSO case.

Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: Yossi Kuperman <yossiku@mellanox.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@mellanox.com>
Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
drivers/net/ethernet/mellanox/mlx5/core/en.h
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.h
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
drivers/net/ethernet/mellanox/mlx5/core/en_tx.c