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SubjectRe: [Intel-wired-lan] [PATCH iwl-next] ice: flower: validate control flags
On Tue, Apr 16, 2024 at 02:43:30PM +0000, Asbjørn Sloth Tønnesen wrote:
> This driver currently doesn't support any control flags.
>
> Use flow_rule_has_control_flags() to check for control flags,
> such as can be set through `tc flower ... ip_flags frag`.
>
> In case any control flags are masked, flow_rule_has_control_flags()
> sets a NL extended error message, and we return -EOPNOTSUPP.
>
> Only compile-tested.
>
> Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
> ---
> drivers/net/ethernet/intel/ice/ice_tc_lib.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/net/ethernet/intel/ice/ice_tc_lib.c b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
> index 2f2fce285ecd..361abd7d7561 100644
> --- a/drivers/net/ethernet/intel/ice/ice_tc_lib.c
> +++ b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
> @@ -1673,6 +1673,10 @@ ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi,
> flow_rule_match_control(rule, &match);
>
> addr_type = match.key->addr_type;
> +
> + if (flow_rule_has_control_flags(match.mask->flags,
> + fltr->extack))
> + return -EOPNOTSUPP;
> }
>

Thanks,
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>

> if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
> --
> 2.43.0
>

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