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[NET]: Wrap netdevice hardware header creation.

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Add inline for common usage of hardware header creation, and
fix bug in IPV6 mcast where the assumption about negative return is
an errno. Negative return from hard_header means not enough space
was available,(ie -N bytes).

Signed-off-by: Stephen Hemminger <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Stephen Hemminger 2007-10-09 01:36:32 -07:00 • committed by David S. Miller
commit 0c4e85813d
19 changed files with 63 additions and 70 deletions
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14
net/8021q/vlan_dev.c
View file

@ -434,21 +434,19 @@ int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
if (build_vlan_header) {
/* Now make the underlying real hard header */
rc = dev->hard_header(skb, dev, ETH_P_8021Q, daddr, saddr, len + VLAN_HLEN);
if (rc > 0) {
rc = dev_hard_header(skb, dev, ETH_P_8021Q, daddr, saddr,
len + VLAN_HLEN);
if (rc > 0)
rc += VLAN_HLEN;
} else if (rc < 0) {
else if (rc < 0)
rc -= VLAN_HLEN;
}
} else {
} else
/* If here, then we'll just make a normal looking ethernet frame,
* but, the hard_start_xmit method will insert the tag (it has to
* be able to do this for bridged and other skbs that don't come
* down the protocol stack in an orderly manner.
*/
rc = dev->hard_header(skb, dev, type, daddr, saddr, len);
}
rc = dev_hard_header(skb, dev, type, daddr, saddr, len);
return rc;
}