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appletalk: Use frag list abstraction interfaces.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2009-06-09 00:17:44 -07:00
parent a5bd8a13e9
commit c32ba3f9b8
1 changed files with 14 additions and 17 deletions
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11
net/appletalk/ddp.c
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@ -939,6 +939,7 @@ static unsigned long atalk_sum_skb(const struct sk_buff *skb, int offset,
int len, unsigned long sum)
{
int start = skb_headlen(skb);
struct sk_buff *frag_iter;
int i, copy;
/* checksum stuff in header space */
@ -977,19 +978,16 @@ static unsigned long atalk_sum_skb(const struct sk_buff *skb, int offset,
start = end;
}
if (skb_shinfo(skb)->frag_list) {
struct sk_buff *list = skb_shinfo(skb)->frag_list;
for (; list; list = list->next) {
skb_walk_frags(skb, frag_iter) {
int end;
WARN_ON(start > offset + len);
end = start + list->len;
end = start + frag_iter->len;
if ((copy = end - offset) > 0) {
if (copy > len)
copy = len;
sum = atalk_sum_skb(list, offset - start,
sum = atalk_sum_skb(frag_iter, offset - start,
copy, sum);
if ((len -= copy) == 0)
return sum;
@ -997,7 +995,6 @@ static unsigned long atalk_sum_skb(const struct sk_buff *skb, int offset,
}
start = end;
}
}
BUG_ON(len > 0);