We cannot access the skb->_nfct field when CONFIG_NF_CONNTRACK is
disabled:
net/ipv4/netfilter/nf_defrag_ipv4.c: In function 'ipv4_conntrack_defrag':
net/ipv4/netfilter/nf_defrag_ipv4.c:83:9: error: 'struct sk_buff' has no member named '_nfct'
net/ipv6/netfilter/nf_defrag_ipv6_hooks.c: In function 'ipv6_defrag':
net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:68:9: error: 'struct sk_buff' has no member named '_nfct'
Both functions already have an #ifdef for this, so let's move the
check in there.
Fixes:
902d6a4c2a4f ("netfilter: nf_defrag: Skip defrag if NOTRACK is set")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
if (skb_nfct(skb) && !nf_ct_is_template((struct nf_conn *)skb_nfct(skb)))
return NF_ACCEPT;
#endif
+ if (skb->_nfct == IP_CT_UNTRACKED)
+ return NF_ACCEPT;
#endif
/* Gather fragments. */
- if (skb->_nfct != IP_CT_UNTRACKED && ip_is_fragment(ip_hdr(skb))) {
+ if (ip_is_fragment(ip_hdr(skb))) {
enum ip_defrag_users user =
nf_ct_defrag_user(state->hook, skb);
/* Previously seen (loopback)? */
if (skb_nfct(skb) && !nf_ct_is_template((struct nf_conn *)skb_nfct(skb)))
return NF_ACCEPT;
-#endif
if (skb->_nfct == IP_CT_UNTRACKED)
return NF_ACCEPT;
+#endif
err = nf_ct_frag6_gather(state->net, skb,
nf_ct6_defrag_user(state->hook, skb));