net/mlx5: Add LAG flow steering namespace

This namespace is used for LAG demux flowtable.

The idea is to position the LAG demux ft between
bypass and kernel flowtables, allowing raw-eth
traffic from both ports to be received by the PF0
IB device.

Signed-off-by: Aviv Heller <avivh@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

2 files changed, 11 insertions, 1 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index eabd73482c86..ac414b7f366e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -96,6 +96,10 @@
 #define OFFLOADS_NUM_PRIOS 1
 #define OFFLOADS_MIN_LEVEL (ANCHOR_MIN_LEVEL + 1)
 
+#define LAG_PRIO_NUM_LEVELS 1
+#define LAG_NUM_PRIOS 1
+#define LAG_MIN_LEVEL (OFFLOADS_MIN_LEVEL + 1)
+
 struct node_caps {
         size_t  arr_sz;
         long    *caps;
@@ -111,12 +115,16 @@ static struct init_tree_node {
         int num_levels;
 } root_fs = {
         .type = FS_TYPE_NAMESPACE,
-        .ar_size = 6,
+        .ar_size = 7,
         .children = (struct init_tree_node[]) {
                 ADD_PRIO(0, BY_PASS_MIN_LEVEL, 0,
                          FS_CHAINING_CAPS,
                          ADD_NS(ADD_MULTIPLE_PRIO(MLX5_BY_PASS_NUM_PRIOS,
                                                   BY_PASS_PRIO_NUM_LEVELS))),
+                ADD_PRIO(0, LAG_MIN_LEVEL, 0,
+                         FS_CHAINING_CAPS,
+                         ADD_NS(ADD_MULTIPLE_PRIO(LAG_NUM_PRIOS,
+                                                  LAG_PRIO_NUM_LEVELS))),
                 ADD_PRIO(0, OFFLOADS_MIN_LEVEL, 0, {},
                          ADD_NS(ADD_MULTIPLE_PRIO(OFFLOADS_NUM_PRIOS, OFFLOADS_MAX_FT))),
                 ADD_PRIO(0, ETHTOOL_MIN_LEVEL, 0,
@@ -1396,6 +1404,7 @@ struct mlx5_flow_namespace *mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
 
         switch (type) {
         case MLX5_FLOW_NAMESPACE_BYPASS:
+        case MLX5_FLOW_NAMESPACE_LAG:
         case MLX5_FLOW_NAMESPACE_OFFLOADS:
         case MLX5_FLOW_NAMESPACE_ETHTOOL:
         case MLX5_FLOW_NAMESPACE_KERNEL:
diff --git a/include/linux/mlx5/fs.h b/include/linux/mlx5/fs.h
index 7edfe0b8f1ec..8803212fc3aa 100644
--- a/include/linux/mlx5/fs.h
+++ b/include/linux/mlx5/fs.h
@@ -54,6 +54,7 @@ static inline void build_leftovers_ft_param(int *priority,
 
 enum mlx5_flow_namespace_type {
         MLX5_FLOW_NAMESPACE_BYPASS,
+        MLX5_FLOW_NAMESPACE_LAG,
         MLX5_FLOW_NAMESPACE_OFFLOADS,
         MLX5_FLOW_NAMESPACE_ETHTOOL,
         MLX5_FLOW_NAMESPACE_KERNEL,