From: dave rientjes <[EMAIL PROTECTED]>
The size of struct nc_trailer is inherently the newtailroom pad.
Signed-off-by: David Rientjes <[EMAIL PROTECTED]>
Cc: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/net/net1080.c | 15 +++++++--------
1 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/usb/net/net1080.c b/drivers/usb/net/net1080.c
index a9b6eea..301baa7 100644
--- a/drivers/usb/net/net1080.c
+++ b/drivers/usb/net/net1080.c
@@ -498,25 +498,24 @@ #endif
static struct sk_buff *
net1080_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
{
- int padlen;
struct sk_buff *skb2;
struct nc_header *header = NULL;
struct nc_trailer *trailer = NULL;
+ int padlen = sizeof (struct nc_trailer);
int len = skb->len;
- padlen = ((len + sizeof (struct nc_header)
- + sizeof (struct nc_trailer)) & 0x01) ? 0 : 1;
+ if (!((len + padlen + sizeof (struct nc_header)) & 0x01))
+ padlen++;
if (!skb_cloned(skb)) {
int headroom = skb_headroom(skb);
int tailroom = skb_tailroom(skb);
- if ((padlen + sizeof (struct nc_trailer)) <= tailroom
- && sizeof (struct nc_header) <= headroom)
+ if (padlen <= tailroom &&
+ sizeof(struct nc_header) <= headroom)
/* There's enough head and tail room */
goto encapsulate;
- if ((sizeof (struct nc_header) + padlen
- + sizeof (struct nc_trailer)) <
+ if ((sizeof (struct nc_header) + padlen) <
(headroom + tailroom)) {
/* There's enough total room, so just readjust */
skb->data = memmove(skb->head
@@ -530,7 +529,7 @@ net1080_tx_fixup(struct usbnet *dev, str
/* Create a new skb to use with the correct size */
skb2 = skb_copy_expand(skb,
sizeof (struct nc_header),
- sizeof (struct nc_trailer) + padlen,
+ padlen,
flags);
dev_kfree_skb_any(skb);
if (!skb2)
--
1.4.2.1
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