udp: remove redundant variable

[net-next-2.6.git] / net / ipv4 / udp.c

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 1f9534846ca9a3b457e00266cd84ba7b2cb42450..608a5446d05b8f7b2292e42e40d675ce656f4e8c 100644 (file)
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -216,9 +216,8 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum,
                 * force rand to be an odd multiple of UDP_HTABLE_SIZE
                 */
                rand = (rand | 1) * (udptable->mask + 1);
-               for (last = first + udptable->mask + 1;
-                    first != last;
-                    first++) {
+               last = first + udptable->mask + 1;
+               do {
                        hslot = udp_hashslot(udptable, net, first);
                        bitmap_zero(bitmap, PORTS_PER_CHAIN);
                        spin_lock_bh(&hslot->lock);
@@ -238,7 +237,7 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum,
                                snum += rand;
                        } while (snum != first);
                        spin_unlock_bh(&hslot->lock);
-               }
+               } while (++first != last);
                goto fail;
        } else {
                hslot = udp_hashslot(udptable, net, snum);
@@ -1118,7 +1117,7 @@ int udp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
        struct inet_sock *inet = inet_sk(sk);
        struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
        struct sk_buff *skb;
-       unsigned int ulen, copied;
+       unsigned int ulen;
        int peeked;
        int err;
        int is_udplite = IS_UDPLITE(sk);
@@ -1139,10 +1138,9 @@ try_again:
                goto out;
 
        ulen = skb->len - sizeof(struct udphdr);
-       copied = len;
-       if (copied > ulen)
-               copied = ulen;
-       else if (copied < ulen)
+       if (len > ulen)
+               len = ulen;
+       else if (len < ulen)
                msg->msg_flags |= MSG_TRUNC;
 
        /*
@@ -1151,14 +1149,14 @@ try_again:
         * coverage checksum (UDP-Lite), do it before the copy.
         */
 
-       if (copied < ulen || UDP_SKB_CB(skb)->partial_cov) {
+       if (len < ulen || UDP_SKB_CB(skb)->partial_cov) {
                if (udp_lib_checksum_complete(skb))
                        goto csum_copy_err;
        }
 
        if (skb_csum_unnecessary(skb))
                err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr),
-                                             msg->msg_iov, copied);
+                                             msg->msg_iov, len);
        else {
                err = skb_copy_and_csum_datagram_iovec(skb,
                                                       sizeof(struct udphdr),
@@ -1187,7 +1185,7 @@ try_again:
        if (inet->cmsg_flags)
                ip_cmsg_recv(msg, skb);
 
-       err = copied;
+       err = len;
        if (flags & MSG_TRUNC)
                err = ulen;
 
@@ -2028,12 +2026,12 @@ static struct udp_seq_afinfo udp4_seq_afinfo = {
        },
 };
 
-static int udp4_proc_init_net(struct net *net)
+static int __net_init udp4_proc_init_net(struct net *net)
 {
        return udp_proc_register(net, &udp4_seq_afinfo);
 }
 
-static void udp4_proc_exit_net(struct net *net)
+static void __net_exit udp4_proc_exit_net(struct net *net)
 {
        udp_proc_unregister(net, &udp4_seq_afinfo);
 }