fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / net / netfilter / nf_conntrack_proto_udp.c

diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index d93edbf..e49cd25 100644 (file)
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -22,13 +22,15 @@
 #include <linux/ipv6.h>
 #include <net/ip6_checksum.h>
 #include <net/checksum.h>
+
 #include <linux/netfilter.h>
 #include <linux/netfilter_ipv4.h>
 #include <linux/netfilter_ipv6.h>
-#include <net/netfilter/nf_conntrack_protocol.h>
+#include <net/netfilter/nf_conntrack_l4proto.h>
+#include <net/netfilter/nf_conntrack_ecache.h>
 
-unsigned int nf_ct_udp_timeout = 30*HZ;
-unsigned int nf_ct_udp_timeout_stream = 180*HZ;
+static unsigned int nf_ct_udp_timeout __read_mostly = 30*HZ;
+static unsigned int nf_ct_udp_timeout_stream __read_mostly = 180*HZ;
 
 static int udp_pkt_to_tuple(const struct sk_buff *skb,
                             unsigned int dataoff,
@@ -131,10 +133,10 @@ static int udp_error(struct sk_buff *skb, unsigned int dataoff,
 
        /* 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 (((pf == PF_INET && hooknum == NF_IP_PRE_ROUTING) ||
+       if (nf_conntrack_checksum &&
+           ((pf == PF_INET && hooknum == NF_IP_PRE_ROUTING) ||
             (pf == PF_INET6 && hooknum == NF_IP6_PRE_ROUTING)) &&
            nf_checksum(skb, hooknum, dataoff, IPPROTO_UDP, pf)) {
                if (LOG_INVALID(IPPROTO_UDP))
@@ -146,10 +148,59 @@ static int udp_error(struct sk_buff *skb, unsigned int dataoff,
        return NF_ACCEPT;
 }
 
-struct nf_conntrack_protocol nf_conntrack_protocol_udp4 =
+#ifdef CONFIG_SYSCTL
+static unsigned int udp_sysctl_table_users;
+static struct ctl_table_header *udp_sysctl_header;
+static struct ctl_table udp_sysctl_table[] = {
+       {
+               .ctl_name       = NET_NF_CONNTRACK_UDP_TIMEOUT,
+               .procname       = "nf_conntrack_udp_timeout",
+               .data           = &nf_ct_udp_timeout,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_jiffies,
+       },
+       {
+               .ctl_name       = NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM,
+               .procname       = "nf_conntrack_udp_timeout_stream",
+               .data           = &nf_ct_udp_timeout_stream,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_jiffies,
+       },
+       {
+               .ctl_name       = 0
+       }
+};
+#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
+static struct ctl_table udp_compat_sysctl_table[] = {
+       {
+               .ctl_name       = NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT,
+               .procname       = "ip_conntrack_udp_timeout",
+               .data           = &nf_ct_udp_timeout,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_jiffies,
+       },
+       {
+               .ctl_name       = NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM,
+               .procname       = "ip_conntrack_udp_timeout_stream",
+               .data           = &nf_ct_udp_timeout_stream,
+               .maxlen         = sizeof(unsigned int),
+               .mode           = 0644,
+               .proc_handler   = &proc_dointvec_jiffies,
+       },
+       {
+               .ctl_name       = 0
+       }
+};
+#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
+#endif /* CONFIG_SYSCTL */
+
+struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 =
 {
        .l3proto                = PF_INET,
-       .proto                  = IPPROTO_UDP,
+       .l4proto                = IPPROTO_UDP,
        .name                   = "udp",
        .pkt_to_tuple           = udp_pkt_to_tuple,
        .invert_tuple           = udp_invert_tuple,
@@ -163,12 +214,21 @@ struct nf_conntrack_protocol nf_conntrack_protocol_udp4 =
        .tuple_to_nfattr        = nf_ct_port_tuple_to_nfattr,
        .nfattr_to_tuple        = nf_ct_port_nfattr_to_tuple,
 #endif
+#ifdef CONFIG_SYSCTL
+       .ctl_table_users        = &udp_sysctl_table_users,
+       .ctl_table_header       = &udp_sysctl_header,
+       .ctl_table              = udp_sysctl_table,
+#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
+       .ctl_compat_table       = udp_compat_sysctl_table,
+#endif
+#endif
 };
+EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_udp4);
 
-struct nf_conntrack_protocol nf_conntrack_protocol_udp6 =
+struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6 =
 {
        .l3proto                = PF_INET6,
-       .proto                  = IPPROTO_UDP,
+       .l4proto                = IPPROTO_UDP,
        .name                   = "udp",
        .pkt_to_tuple           = udp_pkt_to_tuple,
        .invert_tuple           = udp_invert_tuple,
@@ -182,7 +242,10 @@ struct nf_conntrack_protocol nf_conntrack_protocol_udp6 =
        .tuple_to_nfattr        = nf_ct_port_tuple_to_nfattr,
        .nfattr_to_tuple        = nf_ct_port_nfattr_to_tuple,
 #endif
+#ifdef CONFIG_SYSCTL
+       .ctl_table_users        = &udp_sysctl_table_users,
+       .ctl_table_header       = &udp_sysctl_header,
+       .ctl_table              = udp_sysctl_table,
+#endif
 };
-
-EXPORT_SYMBOL(nf_conntrack_protocol_udp4);
-EXPORT_SYMBOL(nf_conntrack_protocol_udp6);
+EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_udp6);