[PATCH 5.6 17/41] net/mlx5e: replace EINVAL in mlx5e_flower_parse_meta()

Greg Kroah-Hartman
2020-06-09T17:55:34Z

From: Pablo Neira Ayuso <pablo@netfilter.org>

[ Upstream commit a683012a8e77675a1947cc8f11f97cdc1d5bb769 ]

The drivers reports EINVAL to userspace through netlink on invalid meta
match. This is confusing since EINVAL is usually reserved for malformed
netlink messages. Replace it by more meaningful codes.

Fixes: 6d65bc64e232 ("net/mlx5e: Add mlx5e_flower_parse_meta support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -1824,7 +1824,7 @@ static int mlx5e_flower_parse_meta(struc
flow_rule_match_meta(rule, &match);
if (match.mask->ingress_ifindex != 0xFFFFFFFF) {
NL_SET_ERR_MSG_MOD(extack, "Unsupported ingress ifindex mask");
- return -EINVAL;
+ return -EOPNOTSUPP;
}

ingress_dev = __dev_get_by_index(dev_net(filter_dev),
@@ -1832,13 +1832,13 @@ static int mlx5e_flower_parse_meta(struc
if (!ingress_dev) {
NL_SET_ERR_MSG_MOD(extack,
"Can't find the ingress port to match on");
- return -EINVAL;
+ return -ENOENT;
}

if (ingress_dev != filter_dev) {
NL_SET_ERR_MSG_MOD(extack,
"Can't match on the ingress filter port");
- return -EINVAL;
+ return -EOPNOTSUPP;
}

return 0;