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macvtap: fix the uninitialized var using in macvtap_alloc_skb()

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Commit d1b08284 use new frag API but would leave f to be used
uninitialized, this patch fix it.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jason Wang 2011-09-18 23:48:31 +00:00 committed by David S. Miller
parent 59da45c4fe
commit 653fc91557
1 changed files with 5 additions and 7 deletions
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12
drivers/net/macvtap.c
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@ -453,7 +453,6 @@ static int zerocopy_sg_from_iovec(struct sk_buff *skb, const struct iovec *from,
int copy = skb_headlen(skb);
int size, offset1 = 0;
int i = 0;
skb_frag_t *f;
/* Skip over from offset */
while (count && (offset >= from->iov_len)) {
@ -503,14 +502,13 @@ static int zerocopy_sg_from_iovec(struct sk_buff *skb, const struct iovec *from,
skb->truesize += len;
atomic_add(len, &skb->sk->sk_wmem_alloc);
while (len) {
__skb_fill_page_desc(
skb, i, page[i],
base & ~PAGE_MASK,
min_t(int, len, PAGE_SIZE - f->page_offset));
int off = base & ~PAGE_MASK;
int size = min_t(int, len, PAGE_SIZE - off);
__skb_fill_page_desc(skb, i, page[i], off, size);
skb_shinfo(skb)->nr_frags++;
/* increase sk_wmem_alloc */
base += f->size;
len -= f->size;
base += size;
len -= size;
i++;
}
offset1 = 0;