net/mlx5e: Support 256 bit keys with kTLS device offload
Add support for 256 bit TLS keys using device offload. Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Gal Pressman <gal@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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4960c414db
@ -25,7 +25,8 @@ static inline bool mlx5e_is_ktls_device(struct mlx5_core_dev *mdev)
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if (!MLX5_CAP_GEN(mdev, log_max_dek))
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return false;
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return MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_128);
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return (MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_128) ||
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MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_256));
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}
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static inline bool mlx5e_ktls_type_check(struct mlx5_core_dev *mdev,
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@ -36,6 +37,10 @@ static inline bool mlx5e_ktls_type_check(struct mlx5_core_dev *mdev,
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if (crypto_info->version == TLS_1_2_VERSION)
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return MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_128);
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break;
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case TLS_CIPHER_AES_GCM_256:
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if (crypto_info->version == TLS_1_2_VERSION)
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return MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_256);
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break;
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}
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return false;
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@ -43,7 +43,7 @@ struct mlx5e_ktls_rx_resync_ctx {
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};
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struct mlx5e_ktls_offload_context_rx {
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struct tls12_crypto_info_aes_gcm_128 crypto_info;
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union mlx5e_crypto_info crypto_info;
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struct accel_rule rule;
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struct sock *sk;
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struct mlx5e_rq_stats *rq_stats;
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@ -362,7 +362,6 @@ static void resync_init(struct mlx5e_ktls_rx_resync_ctx *resync,
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static void resync_handle_seq_match(struct mlx5e_ktls_offload_context_rx *priv_rx,
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struct mlx5e_channel *c)
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{
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struct tls12_crypto_info_aes_gcm_128 *info = &priv_rx->crypto_info;
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struct mlx5e_ktls_resync_resp *ktls_resync;
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struct mlx5e_icosq *sq;
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bool trigger_poll;
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@ -373,7 +372,31 @@ static void resync_handle_seq_match(struct mlx5e_ktls_offload_context_rx *priv_r
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spin_lock_bh(&ktls_resync->lock);
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spin_lock_bh(&priv_rx->lock);
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memcpy(info->rec_seq, &priv_rx->resync.sw_rcd_sn_be, sizeof(info->rec_seq));
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switch (priv_rx->crypto_info.crypto_info.cipher_type) {
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case TLS_CIPHER_AES_GCM_128: {
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struct tls12_crypto_info_aes_gcm_128 *info =
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&priv_rx->crypto_info.crypto_info_128;
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memcpy(info->rec_seq, &priv_rx->resync.sw_rcd_sn_be,
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sizeof(info->rec_seq));
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break;
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}
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case TLS_CIPHER_AES_GCM_256: {
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struct tls12_crypto_info_aes_gcm_256 *info =
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&priv_rx->crypto_info.crypto_info_256;
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memcpy(info->rec_seq, &priv_rx->resync.sw_rcd_sn_be,
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sizeof(info->rec_seq));
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break;
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}
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default:
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WARN_ONCE(1, "Unsupported cipher type %u\n",
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priv_rx->crypto_info.crypto_info.cipher_type);
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spin_unlock_bh(&priv_rx->lock);
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spin_unlock_bh(&ktls_resync->lock);
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return;
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}
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if (list_empty(&priv_rx->list)) {
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list_add_tail(&priv_rx->list, &ktls_resync->list);
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trigger_poll = !test_and_set_bit(MLX5E_SQ_STATE_PENDING_TLS_RX_RESYNC, &sq->state);
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@ -604,8 +627,20 @@ int mlx5e_ktls_add_rx(struct net_device *netdev, struct sock *sk,
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INIT_LIST_HEAD(&priv_rx->list);
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spin_lock_init(&priv_rx->lock);
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priv_rx->crypto_info =
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*(struct tls12_crypto_info_aes_gcm_128 *)crypto_info;
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switch (crypto_info->cipher_type) {
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case TLS_CIPHER_AES_GCM_128:
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priv_rx->crypto_info.crypto_info_128 =
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*(struct tls12_crypto_info_aes_gcm_128 *)crypto_info;
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break;
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case TLS_CIPHER_AES_GCM_256:
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priv_rx->crypto_info.crypto_info_256 =
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*(struct tls12_crypto_info_aes_gcm_256 *)crypto_info;
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break;
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default:
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WARN_ONCE(1, "Unsupported cipher type %u\n",
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crypto_info->cipher_type);
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return -EOPNOTSUPP;
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}
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rxq = mlx5e_ktls_sk_get_rxq(sk);
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priv_rx->rxq = rxq;
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@ -93,7 +93,7 @@ struct mlx5e_ktls_offload_context_tx {
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bool ctx_post_pending;
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/* control / resync */
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struct list_head list_node; /* member of the pool */
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struct tls12_crypto_info_aes_gcm_128 crypto_info;
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union mlx5e_crypto_info crypto_info;
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struct tls_offload_context_tx *tx_ctx;
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struct mlx5_core_dev *mdev;
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struct mlx5e_tls_sw_stats *sw_stats;
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@ -485,8 +485,20 @@ int mlx5e_ktls_add_tx(struct net_device *netdev, struct sock *sk,
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goto err_create_key;
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priv_tx->expected_seq = start_offload_tcp_sn;
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priv_tx->crypto_info =
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*(struct tls12_crypto_info_aes_gcm_128 *)crypto_info;
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switch (crypto_info->cipher_type) {
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case TLS_CIPHER_AES_GCM_128:
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priv_tx->crypto_info.crypto_info_128 =
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*(struct tls12_crypto_info_aes_gcm_128 *)crypto_info;
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break;
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case TLS_CIPHER_AES_GCM_256:
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priv_tx->crypto_info.crypto_info_256 =
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*(struct tls12_crypto_info_aes_gcm_256 *)crypto_info;
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break;
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default:
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WARN_ONCE(1, "Unsupported cipher type %u\n",
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crypto_info->cipher_type);
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return -EOPNOTSUPP;
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}
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priv_tx->tx_ctx = tls_offload_ctx_tx(tls_ctx);
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mlx5e_set_ktls_tx_priv_ctx(tls_ctx, priv_tx);
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@ -671,14 +683,31 @@ tx_post_resync_params(struct mlx5e_txqsq *sq,
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struct mlx5e_ktls_offload_context_tx *priv_tx,
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u64 rcd_sn)
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{
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struct tls12_crypto_info_aes_gcm_128 *info = &priv_tx->crypto_info;
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__be64 rn_be = cpu_to_be64(rcd_sn);
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bool skip_static_post;
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u16 rec_seq_sz;
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char *rec_seq;
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rec_seq = info->rec_seq;
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rec_seq_sz = sizeof(info->rec_seq);
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switch (priv_tx->crypto_info.crypto_info.cipher_type) {
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case TLS_CIPHER_AES_GCM_128: {
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struct tls12_crypto_info_aes_gcm_128 *info = &priv_tx->crypto_info.crypto_info_128;
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rec_seq = info->rec_seq;
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rec_seq_sz = sizeof(info->rec_seq);
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break;
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}
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case TLS_CIPHER_AES_GCM_256: {
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struct tls12_crypto_info_aes_gcm_256 *info = &priv_tx->crypto_info.crypto_info_256;
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rec_seq = info->rec_seq;
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rec_seq_sz = sizeof(info->rec_seq);
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break;
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}
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default:
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WARN_ONCE(1, "Unsupported cipher type %u\n",
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priv_tx->crypto_info.crypto_info.cipher_type);
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return;
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}
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skip_static_post = !memcmp(rec_seq, &rn_be, rec_seq_sz);
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if (!skip_static_post)
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@ -21,7 +21,7 @@ enum {
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static void
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fill_static_params(struct mlx5_wqe_tls_static_params_seg *params,
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struct tls12_crypto_info_aes_gcm_128 *info,
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union mlx5e_crypto_info *crypto_info,
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u32 key_id, u32 resync_tcp_sn)
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{
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char *initial_rn, *gcm_iv;
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@ -32,7 +32,26 @@ fill_static_params(struct mlx5_wqe_tls_static_params_seg *params,
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ctx = params->ctx;
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EXTRACT_INFO_FIELDS;
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switch (crypto_info->crypto_info.cipher_type) {
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case TLS_CIPHER_AES_GCM_128: {
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struct tls12_crypto_info_aes_gcm_128 *info =
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&crypto_info->crypto_info_128;
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EXTRACT_INFO_FIELDS;
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break;
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}
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case TLS_CIPHER_AES_GCM_256: {
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struct tls12_crypto_info_aes_gcm_256 *info =
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&crypto_info->crypto_info_256;
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EXTRACT_INFO_FIELDS;
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break;
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}
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default:
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WARN_ONCE(1, "Unsupported cipher type %u\n",
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crypto_info->crypto_info.cipher_type);
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return;
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}
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gcm_iv = MLX5_ADDR_OF(tls_static_params, ctx, gcm_iv);
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initial_rn = MLX5_ADDR_OF(tls_static_params, ctx, initial_record_number);
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@ -54,7 +73,7 @@ fill_static_params(struct mlx5_wqe_tls_static_params_seg *params,
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void
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mlx5e_ktls_build_static_params(struct mlx5e_set_tls_static_params_wqe *wqe,
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u16 pc, u32 sqn,
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struct tls12_crypto_info_aes_gcm_128 *info,
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union mlx5e_crypto_info *crypto_info,
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u32 tis_tir_num, u32 key_id, u32 resync_tcp_sn,
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bool fence, enum tls_offload_ctx_dir direction)
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{
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@ -75,7 +94,7 @@ mlx5e_ktls_build_static_params(struct mlx5e_set_tls_static_params_wqe *wqe,
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ucseg->flags = MLX5_UMR_INLINE;
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ucseg->bsf_octowords = cpu_to_be16(MLX5_ST_SZ_BYTES(tls_static_params) / 16);
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fill_static_params(&wqe->params, info, key_id, resync_tcp_sn);
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fill_static_params(&wqe->params, crypto_info, key_id, resync_tcp_sn);
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}
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static void
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@ -27,6 +27,12 @@ int mlx5e_ktls_add_rx(struct net_device *netdev, struct sock *sk,
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void mlx5e_ktls_del_rx(struct net_device *netdev, struct tls_context *tls_ctx);
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void mlx5e_ktls_rx_resync(struct net_device *netdev, struct sock *sk, u32 seq, u8 *rcd_sn);
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union mlx5e_crypto_info {
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struct tls_crypto_info crypto_info;
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struct tls12_crypto_info_aes_gcm_128 crypto_info_128;
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struct tls12_crypto_info_aes_gcm_256 crypto_info_256;
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};
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struct mlx5e_set_tls_static_params_wqe {
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struct mlx5_wqe_ctrl_seg ctrl;
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struct mlx5_wqe_umr_ctrl_seg uctrl;
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@ -72,7 +78,7 @@ struct mlx5e_get_tls_progress_params_wqe {
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void
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mlx5e_ktls_build_static_params(struct mlx5e_set_tls_static_params_wqe *wqe,
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u16 pc, u32 sqn,
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struct tls12_crypto_info_aes_gcm_128 *info,
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union mlx5e_crypto_info *crypto_info,
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u32 tis_tir_num, u32 key_id, u32 resync_tcp_sn,
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bool fence, enum tls_offload_ctx_dir direction);
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void
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