From d2ead1f360e8abd9817dea4f7290ffaf00078ac1 Mon Sep 17 00:00:00 2001 From: Tariq Toukan Date: Fri, 5 Jul 2019 18:30:22 +0300 Subject: net/mlx5e: Add kTLS TX HW offload support Add support for transmit side kernel-TLS acceleration. Offload the crypto encryption to HW. Per TLS connection: - Use a separate TIS to maintain the HW context. - Use a separate encryption key. - Maintain static and progress HW contexts by posting the proper WQEs at creation time, or upon resync. - Use a special DUMP opcode to replay the previous frags and sync the HW context. To make sure the SQ is able to serve an xmit request, increase SQ stop room to cover: - static params WQE, - progress params WQE, and - resync DUMP per frag. Currently supporting TLS 1.2, and key size 128bit. Tested over SimX simulator. Signed-off-by: Tariq Toukan Signed-off-by: Eran Ben Elisha Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_tx.c') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c index 200301d6bac5..600e92cb629a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -38,6 +38,7 @@ #include "en/txrx.h" #include "ipoib/ipoib.h" #include "en_accel/en_accel.h" +#include "en_accel/ktls.h" #include "lib/clock.h" static void mlx5e_dma_unmap_wqe_err(struct mlx5e_txqsq *sq, u8 num_dma) @@ -320,11 +321,17 @@ netdev_tx_t mlx5e_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb, if (unlikely(contig_wqebbs_room < num_wqebbs)) { #ifdef CONFIG_MLX5_EN_IPSEC struct mlx5_wqe_eth_seg cur_eth = wqe->eth; +#endif +#ifdef CONFIG_MLX5_EN_TLS + struct mlx5_wqe_ctrl_seg cur_ctrl = wqe->ctrl; #endif mlx5e_fill_sq_frag_edge(sq, wq, pi, contig_wqebbs_room); wqe = mlx5e_sq_fetch_wqe(sq, sizeof(*wqe), &pi); #ifdef CONFIG_MLX5_EN_IPSEC wqe->eth = cur_eth; +#endif +#ifdef CONFIG_MLX5_EN_TLS + wqe->ctrl = cur_ctrl; #endif } @@ -473,6 +480,14 @@ bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget) skb = wi->skb; if (unlikely(!skb)) { +#ifdef CONFIG_MLX5_EN_TLS + if (wi->resync_dump_frag) { + struct mlx5e_sq_dma *dma = + mlx5e_dma_get(sq, dma_fifo_cc++); + + mlx5e_ktls_tx_handle_resync_dump_comp(sq, wi, dma); + } +#endif sqcc += wi->num_wqebbs; continue; } -- cgit v1.2.3-59-g8ed1b