diff options
| author | Michał Mirosław <mirq-linux@rere.qmqm.pl> | 2010-12-14 15:24:08 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-16 14:43:14 -0800 |
| commit | 55508d601dab7df5cbcc7a63f4be8620eface204 (patch) | |
| tree | 346f30fae9c726d2e73aba2e37ce1e4a31dcea8c /drivers/net/usb/smsc95xx.c | |
| parent | 04fb451eff978ca059399eab83d5594b073caf6f (diff) | |
net: Use skb_checksum_start_offset()
Replace skb->csum_start - skb_headroom(skb) with skb_checksum_start_offset().
Note for usb/smsc95xx: skb->data - skb->head == skb_headroom(skb).
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb/smsc95xx.c')
| -rw-r--r-- | drivers/net/usb/smsc95xx.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 65cb1abfbe5..bc86f4b6ecc 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -1163,9 +1163,8 @@ static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb) { - int len = skb->data - skb->head; - u16 high_16 = (u16)(skb->csum_offset + skb->csum_start - len); - u16 low_16 = (u16)(skb->csum_start - len); + u16 low_16 = (u16)skb_checksum_start_offset(skb); + u16 high_16 = low_16 + skb->csum_offset; return (high_16 << 16) | low_16; } @@ -1193,7 +1192,7 @@ static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev, if (skb->len <= 45) { /* workaround - hardware tx checksum does not work * properly with extremely small packets */ - long csstart = skb->csum_start - skb_headroom(skb); + long csstart = skb_checksum_start_offset(skb); __wsum calc = csum_partial(skb->data + csstart, skb->len - csstart, 0); *((__sum16 *)(skb->data + csstart |