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net: dsa: felix: flower: validate control flags

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This driver currently doesn't support any control flags.

Use flow_rule_match_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_match_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>
Link: https://lore.kernel.org/r/20240417144407.104241-1-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Asbjørn Sloth Tønnesen 2024-04-17 14:44:06 +00:00 committed by Jakub Kicinski
parent 435f9fcc0e
commit b1bf860057
1 changed files with 3 additions and 0 deletions

3
drivers/net/dsa/ocelot/felix_vsc9959.c

@ -1755,6 +1755,9 @@ static int vsc9959_stream_identify(struct flow_cls_offload *f,
BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS)))
return -EOPNOTSUPP;
if (flow_rule_match_has_control_flags(rule, f->common.extack))
return -EOPNOTSUPP;
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
struct flow_match_eth_addrs match;