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authorRobert Love <robert.w.love@intel.com>2013-06-19 01:56:54 +0000
committerRobert Love <robert.w.love@intel.com>2013-06-25 12:23:19 -0700
commit2884d4230867c8a46cf701214051e923301e7429 (patch)
tree7271e615907ce6304b63bd6f0dfa33c44fdc5f22 /drivers/scsi/qla2xxx/qla_nx.c
parent1e876e3b1a9df25bb04682b0d48aaa7e8ae1fc82 (diff)
downloadlinaro-lsk-2884d4230867c8a46cf701214051e923301e7429.tar.gz
fcoe: Use correct API to set vlan tag for FCoE Ethertype skbs
fcoe_xmit was coded such that it would skip the vlan net device/layer and instead set some vlan flags and transmit on the real net device. The real net device has code that would add the vlan tag for fcoe skbs. This avoids some extra processing for data frames and provides a small performance improvement. Since fcoe_xmit was not using the vlan net device, __vlan_put_tag within the real net device's xmit routine was ultimately being called to set the vlan tag. With the below change the behavior of __vlan_put_tag changed slightly, it now sets the skb->protocol = vlan_proto. vlan_proto was not a field being set by fcoe_xmit, so the skb->protocol is now not being set to ETH_P_8021Q, as it should be. This patch converts fcoe_xmit to use the vlan_put_tag routine which will tag the skb and fcoe will continue to transmit fcoe skbs on the real net device. For reference, the below change was the one that altered the __vlan_put_tag behavior. commit 86a9bad3ab6b6f858fd4443b48738cabbb6d094c Author: Patrick McHardy <kaber@trash.net> Date: Fri Apr 19 02:04:30 2013 +0000 net: vlan: add protocol argument to packet tagging functions Add a protocol argument to the VLAN packet tagging functions. In case of HW tagging, we need that protocol available in the ndo_start_xmit functions, so it is stored in a new field in the skb. The new field fits into a hole (on 64 bit) and doesn't increase the sks's size. Signed-off-by: Robert Love <robert.w.love@intel.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: John Fastabend <john.r.fastabend@intel.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_nx.c')
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