the scheduled ieee80211 softmac removal

[linux-2.6] / net / ipv6 / netfilter / ip6_queue.c

diff --git a/net/ipv6/netfilter/ip6_queue.c b/net/ipv6/netfilter/ip6_queue.c
index 56b4ea6d29ed3c9780f0081d1a922899f92ba6f7..cc2f9afcf8087516215f52f8719d7dfa1593a316 100644 (file)
--- a/net/ipv6/netfilter/ip6_queue.c
+++ b/net/ipv6/netfilter/ip6_queue.c
@@ -285,8 +285,8 @@ static int
 ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct nf_queue_entry *e)
 {
        int diff;
-       int err;
        struct ipv6hdr *user_iph = (struct ipv6hdr *)v->payload;
+       struct sk_buff *nskb;
 
        if (v->data_len < sizeof(*user_iph))
                return 0;
@@ -298,14 +298,16 @@ ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct nf_queue_entry *e)
                if (v->data_len > 0xFFFF)
                        return -EINVAL;
                if (diff > skb_tailroom(e->skb)) {
-                       err = pskb_expand_head(e->skb, 0,
+                       nskb = skb_copy_expand(e->skb, 0,
                                               diff - skb_tailroom(e->skb),
                                               GFP_ATOMIC);
-                       if (err) {
+                       if (!nskb) {
                                printk(KERN_WARNING "ip6_queue: OOM "
                                      "in mangle, dropping packet\n");
-                               return err;
+                               return -ENOMEM;
                        }
+                       kfree_skb(e->skb);
+                       e->skb = nskb;
                }
                skb_put(e->skb, diff);
        }
@@ -515,6 +517,7 @@ static struct notifier_block ipq_nl_notifier = {
        .notifier_call  = ipq_rcv_nl_event,
 };
 
+#ifdef CONFIG_SYSCTL
 static struct ctl_table_header *ipq_sysctl_header;
 
 static ctl_table ipq_table[] = {
@@ -528,7 +531,9 @@ static ctl_table ipq_table[] = {
        },
        { .ctl_name = 0 }
 };
+#endif
 
+#ifdef CONFIG_PROC_FS
 static int ip6_queue_show(struct seq_file *m, void *v)
 {
        read_lock_bh(&queue_lock);
@@ -565,6 +570,7 @@ static const struct file_operations ip6_queue_proc_fops = {
        .release        = single_release,
        .owner          = THIS_MODULE,
 };
+#endif
 
 static const struct nf_queue_handler nfqh = {
        .name   = "ip6_queue",
@@ -574,7 +580,7 @@ static const struct nf_queue_handler nfqh = {
 static int __init ip6_queue_init(void)
 {
        int status = -ENOMEM;
-       struct proc_dir_entry *proc;
+       struct proc_dir_entry *proc __maybe_unused;
 
        netlink_register_notifier(&ipq_nl_notifier);
        ipqnl = netlink_kernel_create(&init_net, NETLINK_IP6_FW, 0,
@@ -584,6 +590,7 @@ static int __init ip6_queue_init(void)
                goto cleanup_netlink_notifier;
        }
 
+#ifdef CONFIG_PROC_FS
        proc = create_proc_entry(IPQ_PROC_FS_NAME, 0, init_net.proc_net);
        if (proc) {
                proc->owner = THIS_MODULE;
@@ -592,10 +599,11 @@ static int __init ip6_queue_init(void)
                printk(KERN_ERR "ip6_queue: failed to create proc entry\n");
                goto cleanup_ipqnl;
        }
-
+#endif
        register_netdevice_notifier(&ipq_dev_notifier);
+#ifdef CONFIG_SYSCTL
        ipq_sysctl_header = register_sysctl_paths(net_ipv6_ctl_path, ipq_table);
-
+#endif
        status = nf_register_queue_handler(PF_INET6, &nfqh);
        if (status < 0) {
                printk(KERN_ERR "ip6_queue: failed to register queue handler\n");
@@ -604,11 +612,13 @@ static int __init ip6_queue_init(void)
        return status;
 
 cleanup_sysctl:
+#ifdef CONFIG_SYSCTL
        unregister_sysctl_table(ipq_sysctl_header);
+#endif
        unregister_netdevice_notifier(&ipq_dev_notifier);
        proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
 
-cleanup_ipqnl:
+cleanup_ipqnl: __maybe_unused
        netlink_kernel_release(ipqnl);
        mutex_lock(&ipqnl_mutex);
        mutex_unlock(&ipqnl_mutex);
@@ -624,7 +634,9 @@ static void __exit ip6_queue_fini(void)
        synchronize_net();
        ipq_flush(NULL, 0);
 
+#ifdef CONFIG_SYSCTL
        unregister_sysctl_table(ipq_sysctl_header);
+#endif
        unregister_netdevice_notifier(&ipq_dev_notifier);
        proc_net_remove(&init_net, IPQ_PROC_FS_NAME);