[PATCH net 3/3] mlxsw: spectrum_flower: Fail in case user specifies multiple mirror actions
From: Ido Schimmel <hidden>
Date: 2019-09-26 11:44:28
Subsystem:
mellanox ethernet switch drivers, networking drivers, the rest · Maintainers:
Ido Schimmel, Petr Machata, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Danielle Ratson <redacted>
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 <redacted>
Acked-by: Jiri Pirko <redacted>
Signed-off-by: Ido Schimmel <redacted>
---
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 0ad1a24abfc6..b607919c8ad0 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))
@@ -105,6 +106,11 @@ 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);
--
2.21.0