From: Asbjørn Sloth Tønnesen Date: Wed, 17 Apr 2024 14:44:06 +0000 (+0000) Subject: net: dsa: felix: flower: validate control flags X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b1bf8600572d8854f94c56f97ba3d392a9bf5f2f;p=users%2Fwilly%2Flinux.git net: dsa: felix: flower: validate control flags 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 Link: https://lore.kernel.org/r/20240417144407.104241-1-ast@fiberby.net Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c index 3c5509e75a54..85952d841f28 100644 --- a/drivers/net/dsa/ocelot/felix_vsc9959.c +++ b/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;