netdev - [PATCH net-next v4 12/13] flow_dissector: set encapsulation control flags for non-IP

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Message-ID: <20240713021911.1631517-13-ast@fiberby.net>
Date: Sat, 13 Jul 2024 02:19:09 +0000
From: Asbjørn Sloth Tønnesen <ast@...erby.net>
To: netdev@...r.kernel.org
Cc: Asbjørn Sloth Tønnesen <ast@...erby.net>,
	Davide Caratti <dcaratti@...hat.com>,
	Ilya Maximets <i.maximets@....org>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Cong Wang <xiyou.wangcong@...il.com>,
	Jiri Pirko <jiri@...nulli.us>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	David Ahern <dsahern@...nel.org>,
	Simon Horman <horms@...nel.org>,
	Ratheesh Kannoth <rkannoth@...vell.com>,
	Florian Westphal <fw@...len.de>,
	Alexander Lobakin <aleksander.lobakin@...el.com>,
	Donald Hunter <donald.hunter@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH net-next v4 12/13] flow_dissector: set encapsulation control flags for non-IP

Make sure to set encapsulated control flags also for non-IP
packets, such that it's possible to allow matching on e.g.
TUNNEL_OAM on a geneve packet carrying a non-IP packet.

Suggested-by: Davide Caratti <dcaratti@...hat.com>
Signed-off-by: Asbjørn Sloth Tønnesen <ast@...erby.net>
Tested-by: Davide Caratti <dcaratti@...hat.com>
Reviewed-by: Davide Caratti <dcaratti@...hat.com>
---
 net/core/flow_dissector.c | 4 ++++
 net/sched/cls_flower.c    | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 1a9ca129fddde..ada1e39b557e0 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -434,6 +434,10 @@ skb_flow_dissect_tunnel_info(const struct sk_buff *skb,
 			ipv6->dst = key->u.ipv6.dst;
 		}
 		break;
+	default:
+		skb_flow_dissect_set_enc_control(0, ctrl_flags, flow_dissector,
+						 target_container);
+		break;
 	}
 
 	if (dissector_uses_key(flow_dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 897d6b683cc6f..38b2df387c1e1 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -2199,7 +2199,8 @@ static void fl_init_dissector(struct flow_dissector *dissector,
 	FL_KEY_SET_IF_MASKED(mask, keys, cnt,
 			     FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
 	if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
-	    FL_KEY_IS_MASKED(mask, enc_ipv6))
+	    FL_KEY_IS_MASKED(mask, enc_ipv6) ||
+	    FL_KEY_IS_MASKED(mask, enc_control))
 		FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
 			   enc_control);
 	FL_KEY_SET_IF_MASKED(mask, keys, cnt,
-- 
2.45.2