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qeth: Fix IP version detection for VLAN traffic

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The current code would always return 0 for VLAN-encapsulated IP traffic.
One notable side effect was that VLAN traffic would never get prioritized
on OSD and OSX devices when priority queueing modes prio_queueing_tos or
prio_queueing_prec were enabled.

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Raspl 2014-03-19 07:58:02 +01:00 committed by David S. Miller
parent 43934077b0
commit a9baf10aaf
1 changed files with 5 additions and 2 deletions
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7
drivers/s390/net/qeth_core.h
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@ -854,8 +854,11 @@ static inline int qeth_get_micros(void)
static inline int qeth_get_ip_version(struct sk_buff *skb)
{
struct ethhdr *ehdr = (struct ethhdr *)skb->data;
switch (ehdr->h_proto) {
__be16 *p = &((struct ethhdr *)skb->data)->h_proto;
if (*p == ETH_P_8021Q)
p += 2;
switch (*p) {
case ETH_P_IPV6:
return 6;
case ETH_P_IP: