diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_txrx.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_txrx.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_txrx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_txrx.c new file mode 100644 index 000000000000..570a912dd6fa --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_txrx.c @@ -0,0 +1,138 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +/* Copyright (c) 2020, Mellanox Technologies inc. All rights reserved. */ + +#include "en_accel/ktls_txrx.h" +#include "en_accel/ktls_utils.h" + +enum { + MLX5E_STATIC_PARAMS_CONTEXT_TLS_1_2 = 0x2, +}; + +enum { + MLX5E_ENCRYPTION_STANDARD_TLS = 0x1, +}; + +#define EXTRACT_INFO_FIELDS do { \ + salt = info->salt; \ + rec_seq = info->rec_seq; \ + salt_sz = sizeof(info->salt); \ + rec_seq_sz = sizeof(info->rec_seq); \ +} while (0) + +static void +fill_static_params(struct mlx5_wqe_tls_static_params_seg *params, + union mlx5e_crypto_info *crypto_info, + u32 key_id, u32 resync_tcp_sn) +{ + char *initial_rn, *gcm_iv; + u16 salt_sz, rec_seq_sz; + char *salt, *rec_seq; + u8 tls_version; + u8 *ctx; + + ctx = params->ctx; + + switch (crypto_info->crypto_info.cipher_type) { + case TLS_CIPHER_AES_GCM_128: { + struct tls12_crypto_info_aes_gcm_128 *info = + &crypto_info->crypto_info_128; + + EXTRACT_INFO_FIELDS; + break; + } + case TLS_CIPHER_AES_GCM_256: { + struct tls12_crypto_info_aes_gcm_256 *info = + &crypto_info->crypto_info_256; + + EXTRACT_INFO_FIELDS; + break; + } + default: + WARN_ONCE(1, "Unsupported cipher type %u\n", + crypto_info->crypto_info.cipher_type); + return; + } + + gcm_iv = MLX5_ADDR_OF(tls_static_params, ctx, gcm_iv); + initial_rn = MLX5_ADDR_OF(tls_static_params, ctx, initial_record_number); + + memcpy(gcm_iv, salt, salt_sz); + memcpy(initial_rn, rec_seq, rec_seq_sz); + + tls_version = MLX5E_STATIC_PARAMS_CONTEXT_TLS_1_2; + + MLX5_SET(tls_static_params, ctx, tls_version, tls_version); + MLX5_SET(tls_static_params, ctx, const_1, 1); + MLX5_SET(tls_static_params, ctx, const_2, 2); + MLX5_SET(tls_static_params, ctx, encryption_standard, + MLX5E_ENCRYPTION_STANDARD_TLS); + MLX5_SET(tls_static_params, ctx, resync_tcp_sn, resync_tcp_sn); + MLX5_SET(tls_static_params, ctx, dek_index, key_id); +} + +void +mlx5e_ktls_build_static_params(struct mlx5e_set_tls_static_params_wqe *wqe, + u16 pc, u32 sqn, + union mlx5e_crypto_info *crypto_info, + u32 tis_tir_num, u32 key_id, u32 resync_tcp_sn, + bool fence, enum tls_offload_ctx_dir direction) +{ + struct mlx5_wqe_umr_ctrl_seg *ucseg = &wqe->uctrl; + struct mlx5_wqe_ctrl_seg *cseg = &wqe->ctrl; + u8 opmod = direction == TLS_OFFLOAD_CTX_DIR_TX ? + MLX5_OPC_MOD_TLS_TIS_STATIC_PARAMS : + MLX5_OPC_MOD_TLS_TIR_STATIC_PARAMS; + +#define STATIC_PARAMS_DS_CNT DIV_ROUND_UP(sizeof(*wqe), MLX5_SEND_WQE_DS) + + cseg->opmod_idx_opcode = cpu_to_be32((pc << 8) | MLX5_OPCODE_UMR | (opmod << 24)); + cseg->qpn_ds = cpu_to_be32((sqn << MLX5_WQE_CTRL_QPN_SHIFT) | + STATIC_PARAMS_DS_CNT); + cseg->fm_ce_se = fence ? MLX5_FENCE_MODE_INITIATOR_SMALL : 0; + cseg->tis_tir_num = cpu_to_be32(tis_tir_num << 8); + + ucseg->flags = MLX5_UMR_INLINE; + ucseg->bsf_octowords = cpu_to_be16(MLX5_ST_SZ_BYTES(tls_static_params) / 16); + + fill_static_params(&wqe->params, crypto_info, key_id, resync_tcp_sn); +} + +static void +fill_progress_params(struct mlx5_wqe_tls_progress_params_seg *params, u32 tis_tir_num, + u32 next_record_tcp_sn) +{ + u8 *ctx = params->ctx; + + params->tis_tir_num = cpu_to_be32(tis_tir_num); + + MLX5_SET(tls_progress_params, ctx, next_record_tcp_sn, + next_record_tcp_sn); + MLX5_SET(tls_progress_params, ctx, record_tracker_state, + MLX5E_TLS_PROGRESS_PARAMS_RECORD_TRACKER_STATE_START); + MLX5_SET(tls_progress_params, ctx, auth_state, + MLX5E_TLS_PROGRESS_PARAMS_AUTH_STATE_NO_OFFLOAD); +} + +void +mlx5e_ktls_build_progress_params(struct mlx5e_set_tls_progress_params_wqe *wqe, + u16 pc, u32 sqn, + u32 tis_tir_num, bool fence, + u32 next_record_tcp_sn, + enum tls_offload_ctx_dir direction) +{ + struct mlx5_wqe_ctrl_seg *cseg = &wqe->ctrl; + u8 opmod = direction == TLS_OFFLOAD_CTX_DIR_TX ? + MLX5_OPC_MOD_TLS_TIS_PROGRESS_PARAMS : + MLX5_OPC_MOD_TLS_TIR_PROGRESS_PARAMS; + +#define PROGRESS_PARAMS_DS_CNT DIV_ROUND_UP(sizeof(*wqe), MLX5_SEND_WQE_DS) + + cseg->opmod_idx_opcode = + cpu_to_be32((pc << 8) | MLX5_OPCODE_SET_PSV | (opmod << 24)); + cseg->qpn_ds = cpu_to_be32((sqn << MLX5_WQE_CTRL_QPN_SHIFT) | + PROGRESS_PARAMS_DS_CNT); + cseg->fm_ce_se = fence ? MLX5_FENCE_MODE_INITIATOR_SMALL : 0; + + fill_progress_params(&wqe->params, tis_tir_num, next_record_tcp_sn); +} + |