linux-kernel - [PATCH net-next v2 2/4] nfp: flower: fix check for unsupported control flags

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Message-ID: <20240410093235.5334-3-ast@fiberby.net>
Date: Wed, 10 Apr 2024 09:32:23 +0000
From: Asbjørn Sloth Tønnesen <ast@...erby.net>
To: netdev@...r.kernel.org
Cc: Asbjørn Sloth Tønnesen <ast@...erby.net>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	linux-kernel@...r.kernel.org,
	Louis Peens <louis.peens@...igine.com>,
	Yanguo Li <yanguo.li@...igine.com>,
	oss-drivers@...igine.com,
	Taras Chornyi <taras.chornyi@...ision.eu>,
	Woojung Huh <woojung.huh@...rochip.com>,
	UNGLinuxDriver@...rochip.com,
	Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	Vladimir Oltean <olteanv@...il.com>,
	Edward Cree <ecree.xilinx@...il.com>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Cong Wang <xiyou.wangcong@...il.com>,
	Jiri Pirko <jiri@...nulli.us>
Subject: [PATCH net-next v2 2/4] nfp: flower: fix check for unsupported control flags

Use flow_rule_is_supp_control_flags()

Check the mask, not the key, for unsupported control flags.

Only compile-tested, no access to HW

Signed-off-by: Asbjørn Sloth Tønnesen <ast@...erby.net>
---
 drivers/net/ethernet/netronome/nfp/flower/offload.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/flower/offload.c b/drivers/net/ethernet/netronome/nfp/flower/offload.c
index 0aceef9fe5826..8e0a890381b60 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/offload.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/offload.c
@@ -527,10 +527,10 @@ nfp_flower_calculate_key_layers(struct nfp_app *app,
 		struct flow_match_control ctl;
 
 		flow_rule_match_control(rule, &ctl);
-		if (ctl.key->flags & ~NFP_FLOWER_SUPPORTED_CTLFLAGS) {
-			NL_SET_ERR_MSG_MOD(extack, "unsupported offload: match on unknown control flag");
+
+		if (!flow_rule_is_supp_control_flags(NFP_FLOWER_SUPPORTED_CTLFLAGS,
+						     ctl.mask->flags, extack))
 			return -EOPNOTSUPP;
-		}
 	}
 
 	ret_key_ls->key_layer = key_layer;
-- 
2.43.0