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 <tariqt@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
index fb3ad7231e11..76ac111e14d0 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
@@ -122,8 +122,15 @@ struct mlx5e_sw_stats {
 	u64 ch_eq_rearm;
 
 #ifdef CONFIG_MLX5_EN_TLS
+	u64 tx_tls_encrypted_packets;
+	u64 tx_tls_encrypted_bytes;
+	u64 tx_tls_ctx;
 	u64 tx_tls_ooo;
 	u64 tx_tls_resync_bytes;
+	u64 tx_tls_drop_no_sync_data;
+	u64 tx_tls_drop_bypass_req;
+	u64 tx_tls_dump_packets;
+	u64 tx_tls_dump_bytes;
 #endif
 
 	u64 rx_xsk_packets;
@@ -256,8 +263,15 @@ struct mlx5e_sq_stats {
 	u64 added_vlan_packets;
 	u64 nop;
 #ifdef CONFIG_MLX5_EN_TLS
+	u64 tls_encrypted_packets;
+	u64 tls_encrypted_bytes;
+	u64 tls_ctx;
 	u64 tls_ooo;
 	u64 tls_resync_bytes;
+	u64 tls_drop_no_sync_data;
+	u64 tls_drop_bypass_req;
+	u64 tls_dump_packets;
+	u64 tls_dump_bytes;
 #endif
 	/* less likely accessed in data path */
 	u64 csum_none;