[ovs-git] Open vSwitch: datapath: Don't drop MTU-sized VLAN packets from userspace (citrix)

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      from  692c92e092226edcbbbf45466fd31ac09323d526 (commit)

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- Log -----------------------------------------------------------------
commit a393b897f27405592dc56f7084796c8bf1815519
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=a393b897f27405592dc56f7084796c8bf1815519
Author: Justin Pettit <jpettit at nicira.com>
		
datapath: Don't drop MTU-sized VLAN packets from userspace
		
Before transimitting a packet, the datapath checks that the packet
length is not greater than the MTU.  It determines the length based on
the 'protocol' field in the skb.  If 'protocol' is ETH_P_8021Q, it reduces
the packet length as stored in the 'len' field by four bytes, which
is the size of a VLAN tag header.  Unfortunately, packets that arrived
from userspace were not having the 'protocol' field set, which would
cause MTU-sized packets to be dropped.  This commit sets the 'protocol'
field appropriately.

Thanks to Ben Pfaff for the help diagnosing this issue.

NIC-17 and NIC-26


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Summary of changes:
 datapath/datapath.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)


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