fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / net / ipv4 / netfilter / ip_conntrack_proto_udp.c

diff --git a/net/ipv4/netfilter/ip_conntrack_proto_udp.c b/net/ipv4/netfilter/ip_conntrack_proto_udp.c
index 55b7d32..d0e8a16 100644 (file)
--- a/net/ipv4/netfilter/ip_conntrack_proto_udp.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_udp.c
@@ -18,8 +18,8 @@
 #include <linux/netfilter_ipv4.h>
 #include <linux/netfilter_ipv4/ip_conntrack_protocol.h>
 
-unsigned int ip_ct_udp_timeout = 30*HZ;
-unsigned int ip_ct_udp_timeout_stream = 180*HZ;
+unsigned int ip_ct_udp_timeout __read_mostly = 30*HZ;
+unsigned int ip_ct_udp_timeout_stream __read_mostly = 180*HZ;
 
 static int udp_pkt_to_tuple(const struct sk_buff *skb,
                             unsigned int dataoff,
@@ -117,14 +117,10 @@ static int udp_error(struct sk_buff *skb, enum ip_conntrack_info *ctinfo,
 
        /* Checksum invalid? Ignore.
         * We skip checking packets on the outgoing path
-        * because the semantic of CHECKSUM_HW is different there 
-        * and moreover root might send raw packets.
+        * because the checksum is assumed to be correct.
         * FIXME: Source route IP option packets --RR */
-       if (hooknum == NF_IP_PRE_ROUTING
-           && skb->ip_summed != CHECKSUM_UNNECESSARY
-           && csum_tcpudp_magic(iph->saddr, iph->daddr, udplen, IPPROTO_UDP,
-                                skb->ip_summed == CHECKSUM_HW ? skb->csum
-                                : skb_checksum(skb, iph->ihl*4, udplen, 0))) {
+       if (ip_conntrack_checksum && hooknum == NF_IP_PRE_ROUTING &&
+           nf_ip_checksum(skb, hooknum, iph->ihl * 4, IPPROTO_UDP)) {
                if (LOG_INVALID(IPPROTO_UDP))
                        nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL,
                                  "ip_ct_udp: bad UDP checksum ");