udp: remove redundant variable

The variable 'copied' is used in udp_recvmsg() to emphasize that the passed
'len' is adjusted to fit the actual datagram length. But the same can be
done by adjusting 'len' directly. This patch thus removes the indirection.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 14 insertions, 16 deletions

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 4f7d2122d818..608a5446d05b 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1117,7 +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);
@@ -1138,10 +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;
 
         /*
@@ -1150,14 +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),
@@ -1186,7 +1185,7 @@ try_again:
         if (inet->cmsg_flags)
                 ip_cmsg_recv(msg, skb);
 
-        err = copied;
+        err = len;
         if (flags & MSG_TRUNC)
                 err = ulen;
 
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 34efb3589ffa..a7af9d68cd6c 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -322,7 +322,7 @@ int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
         struct ipv6_pinfo *np = inet6_sk(sk);
         struct inet_sock *inet = inet_sk(sk);
         struct sk_buff *skb;
-        unsigned int ulen, copied;
+        unsigned int ulen;
         int peeked;
         int err;
         int is_udplite = IS_UDPLITE(sk);
@@ -341,10 +341,9 @@ 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;
 
         is_udp4 = (skb->protocol == htons(ETH_P_IP));
@@ -355,14 +354,14 @@ 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), msg->msg_iov);
                 if (err == -EINVAL)
@@ -411,7 +410,7 @@ try_again:
                         datagram_recv_ctl(sk, msg, skb);
         }
 
-        err = copied;
+        err = len;
         if (flags & MSG_TRUNC)
                 err = ulen;