Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild

[linux-2.6-omap-h63xx.git] / net / ipv4 / netfilter / nf_conntrack_l3proto_ipv4.c

diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index 8202c1c0afadaee88dc1a3d29e9583ba443570d8..9bdbb77939713eb1083af98a410d6f5bab06b3b1 100644 (file)
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -22,6 +22,7 @@
 #include <linux/skbuff.h>
 #include <linux/icmp.h>
 #include <linux/sysctl.h>
+#include <net/route.h>
 #include <net/ip.h>
 
 #include <linux/netfilter_ipv4.h>
@@ -180,30 +181,6 @@ static unsigned int ipv4_conntrack_defrag(unsigned int hooknum,
        return NF_ACCEPT;
 }
 
-static unsigned int ipv4_refrag(unsigned int hooknum,
-                               struct sk_buff **pskb,
-                               const struct net_device *in,
-                               const struct net_device *out,
-                               int (*okfn)(struct sk_buff *))
-{
-       struct rtable *rt = (struct rtable *)(*pskb)->dst;
-
-       /* We've seen it coming out the other side: confirm */
-       if (ipv4_confirm(hooknum, pskb, in, out, okfn) != NF_ACCEPT)
-               return NF_DROP;
-
-       /* Local packets are never produced too large for their
-          interface.  We degfragment them at LOCAL_OUT, however,
-          so we have to refragment them here. */
-       if ((*pskb)->len > dst_mtu(&rt->u.dst) &&
-           !skb_shinfo(*pskb)->tso_size) {
-               /* No hook can be after us, so this should be OK. */
-               ip_fragment(*pskb, okfn);
-               return NF_STOLEN;
-       }
-       return NF_ACCEPT;
-}
-
 static unsigned int ipv4_conntrack_in(unsigned int hooknum,
                                      struct sk_buff **pskb,
                                      const struct net_device *in,
@@ -283,7 +260,7 @@ static struct nf_hook_ops ipv4_conntrack_helper_in_ops = {
 
 /* Refragmenter; last chance. */
 static struct nf_hook_ops ipv4_conntrack_out_ops = {
-       .hook           = ipv4_refrag,
+       .hook           = ipv4_confirm,
        .owner          = THIS_MODULE,
        .pf             = PF_INET,
        .hooknum        = NF_IP_POST_ROUTING,
@@ -392,6 +369,48 @@ getorigdst(struct sock *sk, int optval, void __user *user, int *len)
        return -ENOENT;
 }
 
+#if defined(CONFIG_NF_CT_NETLINK) || \
+    defined(CONFIG_NF_CT_NETLINK_MODULE)
+
+#include <linux/netfilter/nfnetlink.h>
+#include <linux/netfilter/nfnetlink_conntrack.h>
+
+static int ipv4_tuple_to_nfattr(struct sk_buff *skb,
+                               const struct nf_conntrack_tuple *tuple)
+{
+       NFA_PUT(skb, CTA_IP_V4_SRC, sizeof(u_int32_t),
+               &tuple->src.u3.ip);
+       NFA_PUT(skb, CTA_IP_V4_DST, sizeof(u_int32_t),
+               &tuple->dst.u3.ip);
+       return 0;
+
+nfattr_failure:
+       return -1;
+}
+
+static const size_t cta_min_ip[CTA_IP_MAX] = {
+       [CTA_IP_V4_SRC-1]       = sizeof(u_int32_t),
+       [CTA_IP_V4_DST-1]       = sizeof(u_int32_t),
+};
+
+static int ipv4_nfattr_to_tuple(struct nfattr *tb[],
+                               struct nf_conntrack_tuple *t)
+{
+       if (!tb[CTA_IP_V4_SRC-1] || !tb[CTA_IP_V4_DST-1])
+               return -EINVAL;
+
+       if (nfattr_bad_size(tb, CTA_IP_MAX, cta_min_ip))
+               return -EINVAL;
+
+       t->src.u3.ip =
+               *(u_int32_t *)NFA_DATA(tb[CTA_IP_V4_SRC-1]);
+       t->dst.u3.ip =
+               *(u_int32_t *)NFA_DATA(tb[CTA_IP_V4_DST-1]);
+
+       return 0;
+}
+#endif
+
 static struct nf_sockopt_ops so_getorigdst = {
        .pf             = PF_INET,
        .get_optmin     = SO_ORIGINAL_DST,
@@ -408,6 +427,11 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 = {
        .print_conntrack = ipv4_print_conntrack,
        .prepare         = ipv4_prepare,
        .get_features    = ipv4_get_features,
+#if defined(CONFIG_NF_CT_NETLINK) || \
+    defined(CONFIG_NF_CT_NETLINK_MODULE)
+       .tuple_to_nfattr = ipv4_tuple_to_nfattr,
+       .nfattr_to_tuple = ipv4_nfattr_to_tuple,
+#endif
        .me              = THIS_MODULE,
 };