This is a note to let you know that I've just added the patch titled
net/mlx5e: Move mod hdr allocation to a single place
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-mlx5e-move-mod-hdr-allocation-to-a-single-place.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 70ea1ca2e02513f11840b6d719357f00f70341ea
Author: Roi Dayan <roid@xxxxxxxxxx>
Date: Thu Aug 12 15:46:34 2021 +0300
net/mlx5e: Move mod hdr allocation to a single place
[ Upstream commit d9581e2fa73fadba187b2e62e05306e24e8a1ded ]
Move mod hdr allocation chunk from parse_tc_fdb_actions() and
parse_tc_nic_actions() to a shared function.
Signed-off-by: Roi Dayan <roid@xxxxxxxxxx>
Reviewed-by: Maor Dickman <maord@xxxxxxxxxx>
Reviewed-by: Oz Shlomo <ozsh@xxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Stable-dep-of: 0c101a23ca7e ("net/mlx5e: Fix pedit endianness")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index d13ffba138934..433602f871bd4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -3502,10 +3502,50 @@ static int validate_goto_chain(struct mlx5e_priv *priv,
return 0;
}
-static int parse_tc_nic_actions(struct mlx5e_priv *priv,
- struct flow_action *flow_action,
+static int
+actions_prepare_mod_hdr_actions(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
+ struct mlx5_flow_attr *attr,
+ struct pedit_headers_action *hdrs,
struct netlink_ext_ack *extack)
+{
+ struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr;
+ enum mlx5_flow_namespace_type ns_type;
+ int err;
+
+ if (!hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits &&
+ !hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits)
+ return 0;
+
+ ns_type = get_flow_name_space(flow);
+
+ err = alloc_tc_pedit_action(priv, ns_type, parse_attr, hdrs,
+ &attr->action, extack);
+ if (err)
+ return err;
+
+ /* In case all pedit actions are skipped, remove the MOD_HDR flag. */
+ if (parse_attr->mod_hdr_acts.num_actions > 0)
+ return 0;
+
+ attr->action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
+ dealloc_mod_hdr_actions(&parse_attr->mod_hdr_acts);
+
+ if (ns_type != MLX5_FLOW_NAMESPACE_FDB)
+ return 0;
+
+ if (!((attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) ||
+ (attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH)))
+ attr->esw_attr->split_count = 0;
+
+ return 0;
+}
+
+static int
+parse_tc_nic_actions(struct mlx5e_priv *priv,
+ struct flow_action *flow_action,
+ struct mlx5e_tc_flow *flow,
+ struct netlink_ext_ack *extack)
{
struct mlx5e_tc_flow_parse_attr *parse_attr;
struct mlx5_flow_attr *attr = flow->attr;
@@ -3617,21 +3657,6 @@ static int parse_tc_nic_actions(struct mlx5e_priv *priv,
}
}
- if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits ||
- hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) {
- err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_KERNEL,
- parse_attr, hdrs, &action, extack);
- if (err)
- return err;
- /* in case all pedit actions are skipped, remove the MOD_HDR
- * flag.
- */
- if (parse_attr->mod_hdr_acts.num_actions == 0) {
- action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
- dealloc_mod_hdr_actions(&parse_attr->mod_hdr_acts);
- }
- }
-
attr->action = action;
if (attr->dest_chain && parse_attr->mirred_ifindex[0]) {
@@ -3639,6 +3664,10 @@ static int parse_tc_nic_actions(struct mlx5e_priv *priv,
return -EOPNOTSUPP;
}
+ err = actions_prepare_mod_hdr_actions(priv, flow, attr, hdrs, extack);
+ if (err)
+ return err;
+
if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack))
return -EOPNOTSUPP;
@@ -4192,26 +4221,12 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
return err;
}
- if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits ||
- hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) {
- err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_FDB,
- parse_attr, hdrs, &action, extack);
- if (err)
- return err;
- /* in case all pedit actions are skipped, remove the MOD_HDR
- * flag. we might have set split_count either by pedit or
- * pop/push. if there is no pop/push either, reset it too.
- */
- if (parse_attr->mod_hdr_acts.num_actions == 0) {
- action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
- dealloc_mod_hdr_actions(&parse_attr->mod_hdr_acts);
- if (!((action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) ||
- (action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH)))
- esw_attr->split_count = 0;
- }
- }
-
attr->action = action;
+
+ err = actions_prepare_mod_hdr_actions(priv, flow, attr, hdrs, extack);
+ if (err)
+ return err;
+
if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack))
return -EOPNOTSUPP;
