The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 635d448a1cce4b4ebee52b351052c70434fa90ea Mon Sep 17 00:00:00 2001

From: Paul Blakey paulb@nvidia.com Date: Tue, 14 Dec 2021 19:24:35 +0200 Subject: [PATCH] net: openvswitch: Fix matching zone id for invalid conns arriving from tc

Zone id is not restored if we passed ct and ct rejected the connection, as there is no ct info on the skb.

Save the zone from tc skb cb to tc skb extension and pass it on to ovs, use that info to restore the zone id for invalid connections.

Fixes: d29334c15d33 ("net/sched: act_api: fix miss set post_ct for ovs after do conntrack in act_ct") Signed-off-by: Paul Blakey paulb@nvidia.com Signed-off-by: Jakub Kicinski kuba@kernel.org

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 2ecf8cfd2223..4507d77d6941 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -286,6 +286,7 @@ struct nf_bridge_info { struct tc_skb_ext { __u32 chain; __u16 mru; + __u16 zone; bool post_ct; }; #endif diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c index 9713035b89e3..6d262d9aa10e 100644 --- a/net/openvswitch/flow.c +++ b/net/openvswitch/flow.c @@ -34,6 +34,7 @@ #include <net/mpls.h> #include <net/ndisc.h> #include <net/nsh.h> +#include <net/netfilter/nf_conntrack_zones.h>

#include "conntrack.h" #include "datapath.h" @@ -860,6 +861,7 @@ int ovs_flow_key_extract(const struct ip_tunnel_info *tun_info, #endif bool post_ct = false; int res, err; + u16 zone = 0;

/* Extract metadata from packet. */ if (tun_info) { @@ -898,6 +900,7 @@ int ovs_flow_key_extract(const struct ip_tunnel_info *tun_info, 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; + zone = post_ct ? tc_ext->zone : 0; } else { key->recirc_id = 0; } @@ -906,8 +909,11 @@ int ovs_flow_key_extract(const struct ip_tunnel_info *tun_info, #endif

err = key_extract(skb, key); - if (!err) + if (!err) { ovs_ct_fill_key(skb, key, post_ct); /* Must be after key_extract(). */ + if (post_ct && !skb_get_nfct(skb)) + key->ct_zone = zone; + } return err; }

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index ff8a9383bf1c..35c74bdde848 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -1625,6 +1625,7 @@ int tcf_classify(struct sk_buff *skb, ext->chain = last_executed_chain; ext->mru = cb->mru; ext->post_ct = cb->post_ct; + ext->zone = cb->zone; }

return ret;