Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/mchehab...

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

diff --git a/net/ipv4/netfilter/iptable_filter.c b/net/ipv4/netfilter/iptable_filter.c
index 212a3079085b2e4ce2d4098c9fc6451be13086b4..4f51c1d7d2d60910de959be5554f01ca6bbcd664 100644 (file)
--- a/net/ipv4/netfilter/iptable_filter.c
+++ b/net/ipv4/netfilter/iptable_filter.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/netfilter_ipv4/ip_tables.h>
+#include <net/ip.h>
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
@@ -25,56 +26,32 @@ static struct
        struct ipt_replace repl;
        struct ipt_standard entries[3];
        struct ipt_error term;
-} initial_table __initdata 
-= { { "filter", FILTER_VALID_HOOKS, 4,
-      sizeof(struct ipt_standard) * 3 + sizeof(struct ipt_error),
-      { [NF_IP_LOCAL_IN] = 0,
-       [NF_IP_FORWARD] = sizeof(struct ipt_standard),
-       [NF_IP_LOCAL_OUT] = sizeof(struct ipt_standard) * 2 },
-      { [NF_IP_LOCAL_IN] = 0,
-       [NF_IP_FORWARD] = sizeof(struct ipt_standard),
-       [NF_IP_LOCAL_OUT] = sizeof(struct ipt_standard) * 2 },
-      0, NULL, { } },
-    {
-           /* LOCAL_IN */
-           { { { { 0 }, { 0 }, { 0 }, { 0 }, "", "", { 0 }, { 0 }, 0, 0, 0 },
-               0,
-               sizeof(struct ipt_entry),
-               sizeof(struct ipt_standard),
-               0, { 0, 0 }, { } },
-             { { { { IPT_ALIGN(sizeof(struct ipt_standard_target)), "" } }, { } },
-               -NF_ACCEPT - 1 } },
-           /* FORWARD */
-           { { { { 0 }, { 0 }, { 0 }, { 0 }, "", "", { 0 }, { 0 }, 0, 0, 0 },
-               0,
-               sizeof(struct ipt_entry),
-               sizeof(struct ipt_standard),
-               0, { 0, 0 }, { } },
-             { { { { IPT_ALIGN(sizeof(struct ipt_standard_target)), "" } }, { } },
-               -NF_ACCEPT - 1 } },
-           /* LOCAL_OUT */
-           { { { { 0 }, { 0 }, { 0 }, { 0 }, "", "", { 0 }, { 0 }, 0, 0, 0 },
-               0,
-               sizeof(struct ipt_entry),
-               sizeof(struct ipt_standard),
-               0, { 0, 0 }, { } },
-             { { { { IPT_ALIGN(sizeof(struct ipt_standard_target)), "" } }, { } },
-               -NF_ACCEPT - 1 } }
-    },
-    /* ERROR */
-    { { { { 0 }, { 0 }, { 0 }, { 0 }, "", "", { 0 }, { 0 }, 0, 0, 0 },
-       0,
-       sizeof(struct ipt_entry),
-       sizeof(struct ipt_error),
-       0, { 0, 0 }, { } },
-      { { { { IPT_ALIGN(sizeof(struct ipt_error_target)), IPT_ERROR_TARGET } },
-         { } },
-       "ERROR"
-      }
-    }
+} initial_table __initdata = {
+       .repl = {
+               .name = "filter",
+               .valid_hooks = FILTER_VALID_HOOKS,
+               .num_entries = 4,
+               .size = sizeof(struct ipt_standard) * 3 + sizeof(struct ipt_error),
+               .hook_entry = {
+                       [NF_IP_LOCAL_IN] = 0,
+                       [NF_IP_FORWARD] = sizeof(struct ipt_standard),
+                       [NF_IP_LOCAL_OUT] = sizeof(struct ipt_standard) * 2,
+               },
+               .underflow = {
+                       [NF_IP_LOCAL_IN] = 0,
+                       [NF_IP_FORWARD] = sizeof(struct ipt_standard),
+                       [NF_IP_LOCAL_OUT] = sizeof(struct ipt_standard) * 2,
+               },
+       },
+       .entries = {
+               IPT_STANDARD_INIT(NF_ACCEPT),   /* LOCAL_IN */
+               IPT_STANDARD_INIT(NF_ACCEPT),   /* FORWARD */
+               IPT_STANDARD_INIT(NF_ACCEPT),   /* LOCAL_OUT */
+       },
+       .term = IPT_ERROR_INIT,                 /* ERROR */
 };
 
-static struct ipt_table packet_filter = {
+static struct xt_table packet_filter = {
        .name           = "filter",
        .valid_hooks    = FILTER_VALID_HOOKS,
        .lock           = RW_LOCK_UNLOCKED,
@@ -90,7 +67,7 @@ ipt_hook(unsigned int hook,
         const struct net_device *out,
         int (*okfn)(struct sk_buff *))
 {
-       return ipt_do_table(pskb, hook, in, out, &packet_filter, NULL);
+       return ipt_do_table(pskb, hook, in, out, &packet_filter);
 }
 
 static unsigned int
@@ -102,13 +79,14 @@ ipt_local_out_hook(unsigned int hook,
 {
        /* root is playing with raw sockets. */
        if ((*pskb)->len < sizeof(struct iphdr)
-           || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) {
+           || ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
                if (net_ratelimit())
-                       printk("ipt_hook: happy cracking.\n");
+                       printk("iptable_filter: ignoring short SOCK_RAW "
+                              "packet.\n");
                return NF_ACCEPT;
        }
 
-       return ipt_do_table(pskb, hook, in, out, &packet_filter, NULL);
+       return ipt_do_table(pskb, hook, in, out, &packet_filter);
 }
 
 static struct nf_hook_ops ipt_ops[] = {
@@ -139,7 +117,7 @@ static struct nf_hook_ops ipt_ops[] = {
 static int forward = NF_ACCEPT;
 module_param(forward, bool, 0000);
 
-static int __init init(void)
+static int __init iptable_filter_init(void)
 {
        int ret;
 
@@ -157,39 +135,22 @@ static int __init init(void)
                return ret;
 
        /* Register hooks */
-       ret = nf_register_hook(&ipt_ops[0]);
+       ret = nf_register_hooks(ipt_ops, ARRAY_SIZE(ipt_ops));
        if (ret < 0)
                goto cleanup_table;
 
-       ret = nf_register_hook(&ipt_ops[1]);
-       if (ret < 0)
-               goto cleanup_hook0;
-
-       ret = nf_register_hook(&ipt_ops[2]);
-       if (ret < 0)
-               goto cleanup_hook1;
-
        return ret;
 
- cleanup_hook1:
-       nf_unregister_hook(&ipt_ops[1]);
- cleanup_hook0:
-       nf_unregister_hook(&ipt_ops[0]);
  cleanup_table:
        ipt_unregister_table(&packet_filter);
-
        return ret;
 }
 
-static void __exit fini(void)
+static void __exit iptable_filter_fini(void)
 {
-       unsigned int i;
-
-       for (i = 0; i < sizeof(ipt_ops)/sizeof(struct nf_hook_ops); i++)
-               nf_unregister_hook(&ipt_ops[i]);
-
+       nf_unregister_hooks(ipt_ops, ARRAY_SIZE(ipt_ops));
        ipt_unregister_table(&packet_filter);
 }
 
-module_init(init);
-module_exit(fini);
+module_init(iptable_filter_init);
+module_exit(iptable_filter_fini);