Subject: [PATCH mlx5-next 6/8] net/mlx5: Add IPSec priorities in RDMA namespaces

From: Saeed Mahameed <[email-masked]>
Date: Wed, 4 Jan 2023 20:17:54 -0800

From: Mark Zhang <[email-masked]>

Add IPSec flow steering priorities in RDMA namespaces. This allows
adding tables/rules to forward RoCEv2 traffic to the IPSec crypto
tables in NIC_TX domain, and accept RoCEv2 traffic from NIC_RX domain.

Signed-off-by: Mark Zhang <[email-masked]>
Signed-off-by: Patrisious Haddad <[email-masked]>
Reviewed-by: Maor Gottlieb <[email-masked]>
Reviewed-by: Leon Romanovsky <[email-masked]>
Signed-off-by: Saeed Mahameed <[email-masked]>
---
 .../net/ethernet/mellanox/mlx5/core/fs_core.c | 35 +++++++++++++++++--
 include/linux/mlx5/fs.h                       |  2 ++
 2 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index 2333f835fb70..eac9fd35129d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -219,19 +219,30 @@ static struct init_tree_node egress_root_fs = {
 };
 
 enum {
+	RDMA_RX_IPSEC_PRIO,
 	RDMA_RX_COUNTERS_PRIO,
 	RDMA_RX_BYPASS_PRIO,
 	RDMA_RX_KERNEL_PRIO,
 };
 
+#define RDMA_RX_IPSEC_NUM_PRIOS 1
+#define RDMA_RX_IPSEC_NUM_LEVELS 2
+#define RDMA_RX_IPSEC_MIN_LEVEL  (RDMA_RX_IPSEC_NUM_LEVELS)
+
 #define RDMA_RX_BYPASS_MIN_LEVEL MLX5_BY_PASS_NUM_REGULAR_PRIOS
 #define RDMA_RX_KERNEL_MIN_LEVEL (RDMA_RX_BYPASS_MIN_LEVEL + 1)
 #define RDMA_RX_COUNTERS_MIN_LEVEL (RDMA_RX_KERNEL_MIN_LEVEL + 2)
 
 static struct init_tree_node rdma_rx_root_fs = {
 	.type = FS_TYPE_NAMESPACE,
-	.ar_size = 3,
+	.ar_size = 4,
 	.children = (struct init_tree_node[]) {
+		[RDMA_RX_IPSEC_PRIO] =
+		ADD_PRIO(0, RDMA_RX_IPSEC_MIN_LEVEL, 0,
+			 FS_CHAINING_CAPS,
+			 ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF,
+				ADD_MULTIPLE_PRIO(RDMA_RX_IPSEC_NUM_PRIOS,
+						  RDMA_RX_IPSEC_NUM_LEVELS))),
 		[RDMA_RX_COUNTERS_PRIO] =
 		ADD_PRIO(0, RDMA_RX_COUNTERS_MIN_LEVEL, 0,
 			 FS_CHAINING_CAPS,
@@ -254,15 +265,20 @@ static struct init_tree_node rdma_rx_root_fs = {
 
 enum {
 	RDMA_TX_COUNTERS_PRIO,
+	RDMA_TX_IPSEC_PRIO,
 	RDMA_TX_BYPASS_PRIO,
 };
 
 #define RDMA_TX_BYPASS_MIN_LEVEL MLX5_BY_PASS_NUM_PRIOS
 #define RDMA_TX_COUNTERS_MIN_LEVEL (RDMA_TX_BYPASS_MIN_LEVEL + 1)
 
+#define RDMA_TX_IPSEC_NUM_PRIOS 1
+#define RDMA_TX_IPSEC_PRIO_NUM_LEVELS 1
+#define RDMA_TX_IPSEC_MIN_LEVEL  (RDMA_TX_COUNTERS_MIN_LEVEL + RDMA_TX_IPSEC_NUM_PRIOS)
+
 static struct init_tree_node rdma_tx_root_fs = {
 	.type = FS_TYPE_NAMESPACE,
-	.ar_size = 2,
+	.ar_size = 3,
 	.children = (struct init_tree_node[]) {
 		[RDMA_TX_COUNTERS_PRIO] =
 		ADD_PRIO(0, RDMA_TX_COUNTERS_MIN_LEVEL, 0,
@@ -270,6 +286,13 @@ static struct init_tree_node rdma_tx_root_fs = {
 			 ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF,
 				ADD_MULTIPLE_PRIO(MLX5_RDMA_TX_NUM_COUNTERS_PRIOS,
 						  RDMA_TX_COUNTERS_PRIO_NUM_LEVELS))),
+		[RDMA_TX_IPSEC_PRIO] =
+		ADD_PRIO(0, RDMA_TX_IPSEC_MIN_LEVEL, 0,
+			 FS_CHAINING_CAPS,
+			 ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF,
+				ADD_MULTIPLE_PRIO(RDMA_TX_IPSEC_NUM_PRIOS,
+						  RDMA_TX_IPSEC_PRIO_NUM_LEVELS))),
+
 		[RDMA_TX_BYPASS_PRIO] =
 		ADD_PRIO(0, RDMA_TX_BYPASS_MIN_LEVEL, 0,
 			 FS_CHAINING_CAPS_RDMA_TX,
@@ -2368,6 +2391,14 @@ struct mlx5_flow_namespace *mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
 		root_ns = steering->rdma_tx_root_ns;
 		prio = RDMA_TX_COUNTERS_PRIO;
 		break;
+	case MLX5_FLOW_NAMESPACE_RDMA_RX_IPSEC:
+		root_ns = steering->rdma_rx_root_ns;
+		prio = RDMA_RX_IPSEC_PRIO;
+		break;
+	case MLX5_FLOW_NAMESPACE_RDMA_TX_IPSEC:
+		root_ns = steering->rdma_tx_root_ns;
+		prio = RDMA_TX_IPSEC_PRIO;
+		break;
 	default: /* Must be NIC RX */
 		WARN_ON(!is_nic_rx_ns(type));
 		root_ns = steering->root_ns;
diff --git a/include/linux/mlx5/fs.h b/include/linux/mlx5/fs.h
index 1d2a0638ae74..d72a09a3798c 100644
--- a/include/linux/mlx5/fs.h
+++ b/include/linux/mlx5/fs.h
@@ -103,6 +103,8 @@ enum mlx5_flow_namespace_type {
 	MLX5_FLOW_NAMESPACE_PORT_SEL,
 	MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS,
 	MLX5_FLOW_NAMESPACE_RDMA_TX_COUNTERS,
+	MLX5_FLOW_NAMESPACE_RDMA_RX_IPSEC,
+	MLX5_FLOW_NAMESPACE_RDMA_TX_IPSEC,
 };
 
 enum {
-- 
2.38.1