From: Ariel Levkovich Date: Wed, 26 May 2021 17:01:10 +0000 (+0300) Subject: net/sched: act_ct: Fix ct template allocation for zone 0 X-Git-Tag: v5.4.125~63 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=8e8678936f0db46b0e3267db03e7a2334e2cc9f0;p=users%2Fdwmw2%2Flinux.git net/sched: act_ct: Fix ct template allocation for zone 0 [ Upstream commit fb91702b743dec78d6507c53a2dec8a8883f509d ] Fix current behavior of skipping template allocation in case the ct action is in zone 0. Skipping the allocation may cause the datapath ct code to ignore the entire ct action with all its attributes (commit, nat) in case the ct action in zone 0 was preceded by a ct clear action. The ct clear action sets the ct_state to untracked and resets the skb->_nfct pointer. Under these conditions and without an allocated ct template, the skb->_nfct pointer will remain NULL which will cause the tc ct action handler to exit without handling commit and nat actions, if such exist. For example, the following rule in OVS dp: recirc_id(0x2),ct_state(+new-est-rel-rpl+trk),ct_label(0/0x1), \ in_port(eth0),actions:ct_clear,ct(commit,nat(src=10.11.0.12)), \ recirc(0x37a) Will result in act_ct skipping the commit and nat actions in zone 0. The change removes the skipping of template allocation for zone 0 and treats it the same as any other zone. Fixes: b57dc7c13ea9 ("net/sched: Introduce action ct") Signed-off-by: Ariel Levkovich Acked-by: Marcelo Ricardo Leitner Link: https://lore.kernel.org/r/20210526170110.54864-1-lariel@nvidia.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c index 6119c31dcd072..31eb8eefc8681 100644 --- a/net/sched/act_ct.c +++ b/net/sched/act_ct.c @@ -648,9 +648,6 @@ static int tcf_ct_fill_params(struct net *net, sizeof(p->zone)); } - if (p->zone == NF_CT_DEFAULT_ZONE_ID) - return 0; - nf_ct_zone_init(&zone, p->zone, NF_CT_DEFAULT_ZONE_DIR, 0); tmpl = nf_ct_tmpl_alloc(net, &zone, GFP_KERNEL); if (!tmpl) {