Merge branch 'mlx5-next' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

Leon Romanovsky says:

====================
mlx5 MACsec RoCEv2 support

From Patrisious:

This series extends previously added MACsec offload support
to cover RoCE traffic either.

In order to achieve that, we need configure MACsec with offload between
the two endpoints, like below:

REMOTE_MAC=10:70:fd:43:71:c0

* ip addr add 1.1.1.1/16 dev eth2
* ip link set dev eth2 up
* ip link add link eth2 macsec0 type macsec encrypt on
* ip macsec offload macsec0 mac
* ip macsec add macsec0 tx sa 0 pn 1 on key 00 dffafc8d7b9a43d5b9a3dfbbf6a30c16
* ip macsec add macsec0 rx port 1 address $REMOTE_MAC
* ip macsec add macsec0 rx port 1 address $REMOTE_MAC sa 0 pn 1 on key 01 ead3664f508eb06c40ac7104cdae4ce5
* ip addr add 10.1.0.1/16 dev macsec0
* ip link set dev macsec0 up

And in a similar manner on the other machine, while noting the keys order
would be reversed and the MAC address of the other machine.

RDMA traffic is separated through relevant GID entries and in case
of IP ambiguity issue - meaning we have a physical GIDs and a MACsec
GIDs with the same IP/GID, we disable our physical GID in order
to force the user to only use the MACsec GID.

v0: https://lore.kernel.org/netdev/20230813064703.574082-1-leon@kernel.org/

* 'mlx5-next' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux:
  RDMA/mlx5: Handles RoCE MACsec steering rules addition and deletion
  net/mlx5: Add RoCE MACsec steering infrastructure in core
  net/mlx5: Configure MACsec steering for ingress RoCEv2 traffic
  net/mlx5: Configure MACsec steering for egress RoCEv2 traffic
  IB/core: Reorder GID delete code for RoCE
  net/mlx5: Add MACsec priorities in RDMA namespaces
  RDMA/mlx5: Implement MACsec gid addition and deletion
  net/mlx5: Maintain fs_id xarray per MACsec device inside macsec steering
  net/mlx5: Remove netdevice from MACsec steering
  net/mlx5e: Move MACsec flow steering and statistics database from ethernet to core
  net/mlx5e: Rename MACsec flow steering functions/parameters to suit core naming style
  net/mlx5: Remove dependency of macsec flow steering on ethernet
  net/mlx5e: Move MACsec flow steering operations to be used as core library
  macsec: add functions to get macsec real netdevice and check offload
====================

Link: https://lore.kernel.org/r/20230821073833.59042-1-leon@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 33 insertions, 4 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index a3228502f866..a13b9c2bd144 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -107,7 +107,7 @@
 			   LEFTOVERS_NUM_PRIOS)
 
 #define KERNEL_RX_MACSEC_NUM_PRIOS  1
-#define KERNEL_RX_MACSEC_NUM_LEVELS 2
+#define KERNEL_RX_MACSEC_NUM_LEVELS 3
 #define KERNEL_RX_MACSEC_MIN_LEVEL (BY_PASS_MIN_LEVEL + KERNEL_RX_MACSEC_NUM_PRIOS)
 
 #define ETHTOOL_PRIO_NUM_LEVELS 1
@@ -224,6 +224,7 @@ static struct init_tree_node egress_root_fs = {
 
 enum {
 	RDMA_RX_IPSEC_PRIO,
+	RDMA_RX_MACSEC_PRIO,
 	RDMA_RX_COUNTERS_PRIO,
 	RDMA_RX_BYPASS_PRIO,
 	RDMA_RX_KERNEL_PRIO,
@@ -237,9 +238,13 @@ enum {
 #define RDMA_RX_KERNEL_MIN_LEVEL (RDMA_RX_BYPASS_MIN_LEVEL + 1)
 #define RDMA_RX_COUNTERS_MIN_LEVEL (RDMA_RX_KERNEL_MIN_LEVEL + 2)
 
+#define RDMA_RX_MACSEC_NUM_PRIOS 1
+#define RDMA_RX_MACSEC_PRIO_NUM_LEVELS 2
+#define RDMA_RX_MACSEC_MIN_LEVEL  (RDMA_RX_COUNTERS_MIN_LEVEL + RDMA_RX_MACSEC_NUM_PRIOS)
+
 static struct init_tree_node rdma_rx_root_fs = {
 	.type = FS_TYPE_NAMESPACE,
-	.ar_size = 4,
+	.ar_size = 5,
 	.children = (struct init_tree_node[]) {
 		[RDMA_RX_IPSEC_PRIO] =
 		ADD_PRIO(0, RDMA_RX_IPSEC_MIN_LEVEL, 0,
@@ -247,6 +252,12 @@ static struct init_tree_node rdma_rx_root_fs = {
 			 ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF,
 				ADD_MULTIPLE_PRIO(RDMA_RX_IPSEC_NUM_PRIOS,
 						  RDMA_RX_IPSEC_NUM_LEVELS))),
+		[RDMA_RX_MACSEC_PRIO] =
+		ADD_PRIO(0, RDMA_RX_MACSEC_MIN_LEVEL, 0,
+			 FS_CHAINING_CAPS,
+			 ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF,
+				ADD_MULTIPLE_PRIO(RDMA_RX_MACSEC_NUM_PRIOS,
+						  RDMA_RX_MACSEC_PRIO_NUM_LEVELS))),
 		[RDMA_RX_COUNTERS_PRIO] =
 		ADD_PRIO(0, RDMA_RX_COUNTERS_MIN_LEVEL, 0,
 			 FS_CHAINING_CAPS,
@@ -270,6 +281,7 @@ static struct init_tree_node rdma_rx_root_fs = {
 enum {
 	RDMA_TX_COUNTERS_PRIO,
 	RDMA_TX_IPSEC_PRIO,
+	RDMA_TX_MACSEC_PRIO,
 	RDMA_TX_BYPASS_PRIO,
 };
 
@@ -280,9 +292,13 @@ enum {
 #define RDMA_TX_IPSEC_PRIO_NUM_LEVELS 1
 #define RDMA_TX_IPSEC_MIN_LEVEL  (RDMA_TX_COUNTERS_MIN_LEVEL + RDMA_TX_IPSEC_NUM_PRIOS)
 
+#define RDMA_TX_MACSEC_NUM_PRIOS 1
+#define RDMA_TX_MACESC_PRIO_NUM_LEVELS 1
+#define RDMA_TX_MACSEC_MIN_LEVEL  (RDMA_TX_COUNTERS_MIN_LEVEL + RDMA_TX_MACSEC_NUM_PRIOS)
+
 static struct init_tree_node rdma_tx_root_fs = {
 	.type = FS_TYPE_NAMESPACE,
-	.ar_size = 3,
+	.ar_size = 4,
 	.children = (struct init_tree_node[]) {
 		[RDMA_TX_COUNTERS_PRIO] =
 		ADD_PRIO(0, RDMA_TX_COUNTERS_MIN_LEVEL, 0,
@@ -296,7 +312,12 @@ static struct init_tree_node rdma_tx_root_fs = {
 			 ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF,
 				ADD_MULTIPLE_PRIO(RDMA_TX_IPSEC_NUM_PRIOS,
 						  RDMA_TX_IPSEC_PRIO_NUM_LEVELS))),
-
+		[RDMA_TX_MACSEC_PRIO] =
+		ADD_PRIO(0, RDMA_TX_MACSEC_MIN_LEVEL, 0,
+			 FS_CHAINING_CAPS,
+			 ADD_NS(MLX5_FLOW_TABLE_MISS_ACTION_DEF,
+				ADD_MULTIPLE_PRIO(RDMA_TX_MACSEC_NUM_PRIOS,
+						  RDMA_TX_MACESC_PRIO_NUM_LEVELS))),
 		[RDMA_TX_BYPASS_PRIO] =
 		ADD_PRIO(0, RDMA_TX_BYPASS_MIN_LEVEL, 0,
 			 FS_CHAINING_CAPS_RDMA_TX,
@@ -2466,6 +2487,14 @@ struct mlx5_flow_namespace *mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
 		root_ns = steering->rdma_tx_root_ns;
 		prio = RDMA_TX_IPSEC_PRIO;
 		break;
+	case MLX5_FLOW_NAMESPACE_RDMA_RX_MACSEC:
+		root_ns = steering->rdma_rx_root_ns;
+		prio = RDMA_RX_MACSEC_PRIO;
+		break;
+	case MLX5_FLOW_NAMESPACE_RDMA_TX_MACSEC:
+		root_ns = steering->rdma_tx_root_ns;
+		prio = RDMA_TX_MACSEC_PRIO;
+		break;
 	default: /* Must be NIC RX */
 		WARN_ON(!is_nic_rx_ns(type));
 		root_ns = steering->root_ns;