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Date: Tue, 16 Mar 2021 16:33:54 +0800
From: wenxu@...oud.cn
To: kuba@...nel.org, mleitner@...hat.com
Cc: netdev@...r.kernel.org, jhs@...atatu.com, davem@...emloft.net
Subject: [PATCH net] net/sched: act_api: fix miss set post_ct for ovs after do conntrack in act_ct
From: wenxu <wenxu@...oud.cn>
When openvswitch conntrack offload with act_ct action. The first rule
do conntrack in the act_ct in tc subsystem. And miss the next rule in
the tc and fallback to the ovs datapath but miss set post_ct flag
which will lead the ct_state_key with -trk flag.
Fixes: 7baf2429a1a9 ("net/sched: cls_flower add CT_FLAGS_INVALID flag support")
Signed-off-by: wenxu <wenxu@...oud.cn>
---
include/linux/skbuff.h | 1 +
net/openvswitch/conntrack.c | 8 +++++---
net/openvswitch/conntrack.h | 6 ++++--
net/openvswitch/flow.c | 4 +++-
net/sched/cls_api.c | 1 +
5 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 6d0a33d..f2c9ee7 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -285,6 +285,7 @@ struct nf_bridge_info {
struct tc_skb_ext {
__u32 chain;
__u16 mru;
+ bool post_ct;
};
#endif
diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index 5eddfe7..71cec03 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -271,9 +271,11 @@ static void ovs_ct_update_key(const struct sk_buff *skb,
/* This is called to initialize CT key fields possibly coming in from the local
* stack.
*/
-void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key)
+void ovs_ct_fill_key(const struct sk_buff *skb,
+ struct sw_flow_key *key,
+ bool post_ct)
{
- ovs_ct_update_key(skb, NULL, key, false, false);
+ ovs_ct_update_key(skb, NULL, key, post_ct, false);
}
int ovs_ct_put_key(const struct sw_flow_key *swkey,
@@ -1332,7 +1334,7 @@ int ovs_ct_clear(struct sk_buff *skb, struct sw_flow_key *key)
if (skb_nfct(skb)) {
nf_conntrack_put(skb_nfct(skb));
nf_ct_set(skb, NULL, IP_CT_UNTRACKED);
- ovs_ct_fill_key(skb, key);
+ ovs_ct_fill_key(skb, key, false);
}
return 0;
diff --git a/net/openvswitch/conntrack.h b/net/openvswitch/conntrack.h
index 59dc327..317e525 100644
--- a/net/openvswitch/conntrack.h
+++ b/net/openvswitch/conntrack.h
@@ -25,7 +25,8 @@ int ovs_ct_execute(struct net *, struct sk_buff *, struct sw_flow_key *,
const struct ovs_conntrack_info *);
int ovs_ct_clear(struct sk_buff *skb, struct sw_flow_key *key);
-void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key);
+void ovs_ct_fill_key(const struct sk_buff *skb, struct sw_flow_key *key,
+ bool post_ct);
int ovs_ct_put_key(const struct sw_flow_key *swkey,
const struct sw_flow_key *output, struct sk_buff *skb);
void ovs_ct_free_action(const struct nlattr *a);
@@ -74,7 +75,8 @@ static inline int ovs_ct_clear(struct sk_buff *skb,
}
static inline void ovs_ct_fill_key(const struct sk_buff *skb,
- struct sw_flow_key *key)
+ struct sw_flow_key *key,
+ bool post_ct)
{
key->ct_state = 0;
key->ct_zone = 0;
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index c7f34d6..e586424 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -857,6 +857,7 @@ int ovs_flow_key_extract(const struct ip_tunnel_info *tun_info,
#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
struct tc_skb_ext *tc_ext;
#endif
+ bool post_ct = false;
int res, err;
/* Extract metadata from packet. */
@@ -895,6 +896,7 @@ int ovs_flow_key_extract(const struct ip_tunnel_info *tun_info,
tc_ext = skb_ext_find(skb, TC_SKB_EXT);
key->recirc_id = tc_ext ? tc_ext->chain : 0;
OVS_CB(skb)->mru = tc_ext ? tc_ext->mru : 0;
+ post_ct = tc_ext ? tc_ext->post_ct : false;
} else {
key->recirc_id = 0;
}
@@ -904,7 +906,7 @@ int ovs_flow_key_extract(const struct ip_tunnel_info *tun_info,
err = key_extract(skb, key);
if (!err)
- ovs_ct_fill_key(skb, key); /* Must be after key_extract(). */
+ ovs_ct_fill_key(skb, key, post_ct); /* Must be after key_extract(). */
return err;
}
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index e37556cc..13341e7 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -1629,6 +1629,7 @@ int tcf_classify_ingress(struct sk_buff *skb,
return TC_ACT_SHOT;
ext->chain = last_executed_chain;
ext->mru = qdisc_skb_cb(skb)->mru;
+ ext->post_ct = qdisc_skb_cb(skb)->post_ct;
}
return ret;
--
1.8.3.1
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