From cb01008390bb0645d4728c7f8825e32d4b540a30 Mon Sep 17 00:00:00 2001 From: Aviad Yehezkel Date: Thu, 18 Jan 2018 16:02:17 +0200 Subject: net/mlx5: IPSec, Add support for ESN Currently ESN is not supported with IPSec device offload. This patch adds ESN support to IPsec device offload. Implementing new xfrm device operation to synchronize offloading device ESN with xfrm received SN. New QP command to update SA state at the following: ESN 1 ESN 2 ESN 3 |-----------*-----------|-----------*-----------|-----------* ^ ^ ^ ^ ^ ^ ^ - marks where QP command invoked to update the SA ESN state machine. | - marks the start of the ESN scope (0-2^32-1). At this point move SA ESN overlap bit to zero and increment ESN. * - marks the middle of the ESN scope (2^31). At this point move SA ESN overlap bit to one. Signed-off-by: Aviad Yehezkel Signed-off-by: Yossef Efraim Signed-off-by: Saeed Mahameed --- include/linux/mlx5/accel.h | 2 ++ include/linux/mlx5/mlx5_ifc_fpga.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mlx5/accel.h b/include/linux/mlx5/accel.h index 6c694709b0a2..70e7e5673ce9 100644 --- a/include/linux/mlx5/accel.h +++ b/include/linux/mlx5/accel.h @@ -110,6 +110,8 @@ enum mlx5_accel_ipsec_cap { MLX5_ACCEL_IPSEC_CAP_IPV6 = 1 << 3, MLX5_ACCEL_IPSEC_CAP_LSO = 1 << 4, MLX5_ACCEL_IPSEC_CAP_RX_NO_TRAILER = 1 << 5, + MLX5_ACCEL_IPSEC_CAP_ESN = 1 << 6, + MLX5_ACCEL_IPSEC_CAP_TX_IV_IS_ESN = 1 << 7, }; #ifdef CONFIG_MLX5_ACCEL diff --git a/include/linux/mlx5/mlx5_ifc_fpga.h b/include/linux/mlx5/mlx5_ifc_fpga.h index debcc57de43a..ec052491ba3d 100644 --- a/include/linux/mlx5/mlx5_ifc_fpga.h +++ b/include/linux/mlx5/mlx5_ifc_fpga.h @@ -468,6 +468,8 @@ struct mlx5_ifc_fpga_ipsec_cmd_cap { } __packed; enum mlx5_ifc_fpga_ipsec_sa_flags { + MLX5_FPGA_IPSEC_SA_ESN_EN = BIT(0), + MLX5_FPGA_IPSEC_SA_ESN_OVERLAP = BIT(1), MLX5_FPGA_IPSEC_SA_IPV6 = BIT(2), MLX5_FPGA_IPSEC_SA_DIR_SX = BIT(3), MLX5_FPGA_IPSEC_SA_SPI_EN = BIT(4), -- cgit v1.2.3