netfilter: ipt_CLUSTERIP: use proto_ports_offset() to support AH message (3d04ebb6) · Commits · e / devices / android_kernel_fairphone_FP5

net/ipv4/netfilter/ipt_CLUSTERIP.c

+15 −16

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@
		#include <net/netfilter/nf_conntrack.h>
		#include <net/net_namespace.h>
		#include <net/checksum.h>
		#include <net/ip.h>

		#define CLUSTERIP_VERSION "0.8"

		@@ -231,24 +232,22 @@ clusterip_hashfn(const struct sk_buff *skb,
		{
		const struct iphdr *iph = ip_hdr(skb);
		unsigned long hashval;
		u_int16_t sport, dport;
		u_int16_t sport = 0, dport = 0;
		int poff;

		poff = proto_ports_offset(iph->protocol);
		if (poff >= 0) {
		const u_int16_t *ports;
		u16 _ports[2];

		switch (iph->protocol) {
		case IPPROTO_TCP:
		case IPPROTO_UDP:
		case IPPROTO_UDPLITE:
		case IPPROTO_SCTP:
		case IPPROTO_DCCP:
		case IPPROTO_ICMP:
		ports = (const void )iph+iph->ihl4;
		ports = skb_header_pointer(skb, iph->ihl * 4 + poff, 4, _ports);
		if (ports) {
		sport = ports[0];
		dport = ports[1];
		break;
		default:
		}
		} else {
		if (net_ratelimit())
		pr_info("unknown protocol %u\n", iph->protocol);
		sport = dport = 0;
		}

		switch (config->hash_mode) {