diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c index 64c549a06678..c245d8e78509 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c @@ -176,7 +176,30 @@ static void mlx5e_ipsec_set_swp(struct sk_buff *skb, } } -static void mlx5e_ipsec_set_iv(struct sk_buff *skb, struct xfrm_offload *xo) +void mlx5e_ipsec_set_iv_esn(struct sk_buff *skb, struct xfrm_state *x, + struct xfrm_offload *xo) +{ + struct xfrm_replay_state_esn *replay_esn = x->replay_esn; + __u32 oseq = replay_esn->oseq; + int iv_offset; + __be64 seqno; + u32 seq_hi; + + if (unlikely(skb_is_gso(skb) && oseq < MLX5E_IPSEC_ESN_SCOPE_MID && + MLX5E_IPSEC_ESN_SCOPE_MID < (oseq - skb_shinfo(skb)->gso_segs))) { + seq_hi = xo->seq.hi - 1; + } else { + seq_hi = xo->seq.hi; + } + + /* Place the SN in the IV field */ + seqno = cpu_to_be64(xo->seq.low + ((u64)seq_hi << 32)); + iv_offset = skb_transport_offset(skb) + sizeof(struct ip_esp_hdr); + skb_store_bits(skb, iv_offset, &seqno, 8); +} + +void mlx5e_ipsec_set_iv(struct sk_buff *skb, struct xfrm_state *x, + struct xfrm_offload *xo) { int iv_offset; __be64 seqno; @@ -228,6 +251,7 @@ struct sk_buff *mlx5e_ipsec_handle_tx_skb(struct net_device *netdev, struct mlx5e_priv *priv = netdev_priv(netdev); struct xfrm_offload *xo = xfrm_offload(skb); struct mlx5e_ipsec_metadata *mdata; + struct mlx5e_ipsec_sa_entry *sa_entry; struct xfrm_state *x; if (!xo) @@ -262,7 +286,8 @@ struct sk_buff *mlx5e_ipsec_handle_tx_skb(struct net_device *netdev, goto drop; } mlx5e_ipsec_set_swp(skb, &wqe->eth, x->props.mode, xo); - mlx5e_ipsec_set_iv(skb, xo); + sa_entry = (struct mlx5e_ipsec_sa_entry *)x->xso.offload_handle; + sa_entry->set_iv_op(skb, x, xo); mlx5e_ipsec_set_metadata(skb, mdata, xo); return skb; |