From: Danielle Ratson <danieller@xxxxxxxxxxxx>
[ Upstream commit 52feb8b588f6d23673dd7cc2b44b203493b627f6 ]
The ASIC can only mirror a packet to one port, but when user is trying
to set more than one mirror action, it doesn't fail.
Add a check if more than one mirror action was specified per rule and if so,
fail for not being supported.
Fixes: d0d13c1858a11 ("mlxsw: spectrum_acl: Add support for mirror action")
Signed-off-by: Danielle Ratson <danieller@xxxxxxxxxxxx>
Acked-by: Jiri Pirko <jiri@xxxxxxxxxxxx>
Signed-off-by: Ido Schimmel <idosch@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
index 202e9a2460194..7c13656a83384 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
@@ -21,6 +21,7 @@ static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
struct netlink_ext_ack *extack)
{
const struct flow_action_entry *act;
+ int mirror_act_count = 0;
int err, i;
if (!flow_action_has_entries(flow_action))
@@ -95,6 +96,11 @@ static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
case FLOW_ACTION_MIRRED: {
struct net_device *out_dev = act->dev;
+ if (mirror_act_count++) {
+ NL_SET_ERR_MSG_MOD(extack, "Multiple mirror actions per rule are not supported");
+ return -EOPNOTSUPP;
+ }
+
err = mlxsw_sp_acl_rulei_act_mirror(mlxsw_sp, rulei,
block, out_dev,
extack);
--
2.20.1
