x86: unification of cfufreq/Kconfig

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

diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c
index 23cbfc7c80fd982f7b1f57a51d7cc2125342432a..14d64a383db1a7223ed321e5dedfbc1942af1095 100644 (file)
--- a/net/ipv4/netfilter/ip_queue.c
+++ b/net/ipv4/netfilter/ip_queue.c
@@ -22,6 +22,7 @@
 #include <linux/spinlock.h>
 #include <linux/sysctl.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/security.h>
 #include <linux/mutex.h>
 #include <net/net_namespace.h>
@@ -335,6 +336,7 @@ static int
 ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
 {
        int diff;
+       int err;
        struct iphdr *user_iph = (struct iphdr *)v->payload;
 
        if (v->data_len < sizeof(*user_iph))
@@ -347,25 +349,18 @@ ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
                if (v->data_len > 0xFFFF)
                        return -EINVAL;
                if (diff > skb_tailroom(e->skb)) {
-                       struct sk_buff *newskb;
-
-                       newskb = skb_copy_expand(e->skb,
-                                                skb_headroom(e->skb),
-                                                diff,
-                                                GFP_ATOMIC);
-                       if (newskb == NULL) {
-                               printk(KERN_WARNING "ip_queue: OOM "
-                                     "in mangle, dropping packet\n");
-                               return -ENOMEM;
+                       err = pskb_expand_head(e->skb, 0,
+                                              diff - skb_tailroom(e->skb),
+                                              GFP_ATOMIC);
+                       if (err) {
+                               printk(KERN_WARNING "ip_queue: error "
+                                     "in mangle, dropping packet: %d\n", -err);
+                               return err;
                        }
-                       if (e->skb->sk)
-                               skb_set_owner_w(newskb, e->skb->sk);
-                       kfree_skb(e->skb);
-                       e->skb = newskb;
                }
                skb_put(e->skb, diff);
        }
-       if (!skb_make_writable(&e->skb, v->data_len))
+       if (!skb_make_writable(e->skb, v->data_len))
                return -ENOMEM;
        skb_copy_to_linear_data(e->skb, v->payload, v->data_len);
        e->skb->ip_summed = CHECKSUM_NONE;
@@ -613,15 +608,11 @@ static ctl_table ipq_root_table[] = {
        { .ctl_name = 0 }
 };
 
-#ifdef CONFIG_PROC_FS
-static int
-ipq_get_info(char *buffer, char **start, off_t offset, int length)
+static int ip_queue_show(struct seq_file *m, void *v)
 {
-       int len;
-
        read_lock_bh(&queue_lock);
 
-       len = sprintf(buffer,
+       seq_printf(m,
                      "Peer PID          : %d\n"
                      "Copy mode         : %hu\n"
                      "Copy range        : %u\n"
@@ -638,16 +629,21 @@ ipq_get_info(char *buffer, char **start, off_t offset, int length)
                      queue_user_dropped);
 
        read_unlock_bh(&queue_lock);
+       return 0;
+}
 
-       *start = buffer + offset;
-       len -= offset;
-       if (len > length)
-               len = length;
-       else if (len < 0)
-               len = 0;
-       return len;
+static int ip_queue_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, ip_queue_show, NULL);
 }
-#endif /* CONFIG_PROC_FS */
+
+static const struct file_operations ip_queue_proc_fops = {
+       .open           = ip_queue_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+       .owner          = THIS_MODULE,
+};
 
 static struct nf_queue_handler nfqh = {
        .name   = "ip_queue",
@@ -667,10 +663,11 @@ static int __init ip_queue_init(void)
                goto cleanup_netlink_notifier;
        }
 
-       proc = proc_net_create(&init_net, IPQ_PROC_FS_NAME, 0, ipq_get_info);
-       if (proc)
+       proc = create_proc_entry(IPQ_PROC_FS_NAME, 0, init_net.proc_net);
+       if (proc) {
                proc->owner = THIS_MODULE;
-       else {
+               proc->proc_fops = &ip_queue_proc_fops;
+       } else {
                printk(KERN_ERR "ip_queue: failed to create proc entry\n");
                goto cleanup_ipqnl;
        }