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mlxsw: spectrum_flower: Fail in case user specifies multiple mirror actions

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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: d0d13c1858 ("mlxsw: spectrum_acl: Add support for mirror action")
Signed-off-by: Danielle Ratson <danieller@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Danielle Ratson 2019-09-26 14:43:40 +03:00 committed by David S. Miller
parent 44bde514eb
commit 52feb8b588
1 changed files with 6 additions and 0 deletions
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6
drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
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@ -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);