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netfilter: conntrack: remove pkt_to_tuple indirection from l3 protocol trackers

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Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal
2018-06-29 07:46:45 +02:00
committed by Pablo Neira Ayuso
parent f957be9d34
commit 47a91b14de
5 changed files with 33 additions and 58 deletions
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17
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
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@@ -38,22 +38,6 @@ struct conntrack4_net {
unsigned int users;
};
static bool ipv4_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff,
struct nf_conntrack_tuple *tuple)
{
const __be32 *ap;
__be32 _addrs[2];
ap = skb_header_pointer(skb, nhoff + offsetof(struct iphdr, saddr),
sizeof(u_int32_t) * 2, _addrs);
if (ap == NULL)
return false;
tuple->src.u3.ip = ap[0];
tuple->dst.u3.ip = ap[1];
return true;
}
static bool ipv4_invert_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_tuple *orig)
{
@@ -322,7 +306,6 @@ static void ipv4_hooks_unregister(struct net *net)
const struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 = {
.l3proto = PF_INET,
.pkt_to_tuple = ipv4_pkt_to_tuple,
.invert_tuple = ipv4_invert_tuple,
.get_l4proto = ipv4_get_l4proto,
.net_ns_get = ipv4_hooks_register,