Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6

[linux-2.6-omap-h63xx.git] / net / core / datagram.c

diff --git a/net/core/datagram.c b/net/core/datagram.c
index 797fdd4352ce50e3bf1ef2de7e3e7f686d2258c4..029b93e246b45ea934b1da0cd018425e52965fcb 100644 (file)
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -411,11 +411,11 @@ fault:
        return -EFAULT;
 }
 
-__sum16 __skb_checksum_complete(struct sk_buff *skb)
+__sum16 __skb_checksum_complete_head(struct sk_buff *skb, int len)
 {
        __sum16 sum;
 
-       sum = csum_fold(skb_checksum(skb, 0, skb->len, skb->csum));
+       sum = csum_fold(skb_checksum(skb, 0, len, skb->csum));
        if (likely(!sum)) {
                if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE))
                        netdev_rx_csum_fault(skb->dev);
@@ -423,6 +423,12 @@ __sum16 __skb_checksum_complete(struct sk_buff *skb)
        }
        return sum;
 }
+EXPORT_SYMBOL(__skb_checksum_complete_head);
+
+__sum16 __skb_checksum_complete(struct sk_buff *skb)
+{
+       return __skb_checksum_complete_head(skb, skb->len);
+}
 EXPORT_SYMBOL(__skb_checksum_complete);
 
 /**
@@ -430,7 +436,7 @@ EXPORT_SYMBOL(__skb_checksum_complete);
  *     @skb: skbuff
  *     @hlen: hardware length
  *     @iov: io vector
- * 
+ *
  *     Caller _must_ check that skb will fit to this iovec.
  *
  *     Returns: 0       - success.
@@ -444,6 +450,9 @@ int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb,
        __wsum csum;
        int chunk = skb->len - hlen;
 
+       if (!chunk)
+               return 0;
+
        /* Skip filled elements.
         * Pretty silly, look at memcpy_toiovec, though 8)
         */