From 5ee03e6df41727652e0dc6ffaef8411b8840d812 Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Mon, 20 Aug 2018 15:30:03 +0200 Subject: xtables: Use meta l4proto for -p match Use of payload expression to match against IPv6 nexthdr field does not work if extension headers are present. A simple example for that is matching for fragmented icmpv6 traffic. Instead, generate a 'meta l4proto' expression which works even if extension headers are present. For consistency, apply the same change to iptables-nft as well. No adjustment to reverse path required as the needed bits were added by commit 6ea7579e6fe24 ("nft: decode meta l4proto") already. Signed-off-by: Phil Sutter Signed-off-by: Florian Westphal --- iptables/nft-shared.h | 1 + 1 file changed, 1 insertion(+) (limited to 'iptables/nft-shared.h') diff --git a/iptables/nft-shared.h b/iptables/nft-shared.h index 80750784..59e1062a 100644 --- a/iptables/nft-shared.h +++ b/iptables/nft-shared.h @@ -122,6 +122,7 @@ void add_addr(struct nftnl_rule *r, int offset, void *data, void *mask, size_t len, uint32_t op); void add_proto(struct nftnl_rule *r, int offset, size_t len, uint8_t proto, uint32_t op); +void add_l4proto(struct nftnl_rule *r, uint8_t proto, uint32_t op); void add_compat(struct nftnl_rule *r, uint32_t proto, bool inv); bool is_same_interfaces(const char *a_iniface, const char *a_outiface, -- cgit v1.2.3