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Message-ID: <20240422152643.175592-1-ast@fiberby.net>
Date: Mon, 22 Apr 2024 15:26:42 +0000
From: Asbjørn Sloth Tønnesen <ast@...erby.net>
To: netdev@...r.kernel.org
Cc: Asbjørn Sloth Tønnesen <ast@...erby.net>,
linux-kernel@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Grygorii Strashko <grygorii.strashko@...com>,
Vladimir Oltean <vladimir.oltean@....com>,
Roger Quadros <rogerq@...nel.org>
Subject: [PATCH net-next] net: ethernet: ti: am65-cpsw: 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 <ast@...erby.net>
---
drivers/net/ethernet/ti/am65-cpsw-qos.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/ti/am65-cpsw-qos.c b/drivers/net/ethernet/ti/am65-cpsw-qos.c
index 816e73a3d6e4..16f192a5b160 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-qos.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-qos.c
@@ -1008,6 +1008,9 @@ static int am65_cpsw_qos_clsflower_add_policer(struct am65_cpsw_port *port,
return -EOPNOTSUPP;
}
+ if (flow_rule_match_has_control_flags(rule, extack))
+ return -EOPNOTSUPP;
+
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
NL_SET_ERR_MSG_MOD(extack, "Not matching on eth address");
return -EOPNOTSUPP;
--
2.43.0
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