commit f107eaf4a2cd5fbd39bbb36f81289c49838dddf8
Author: Divakar D <email address hidden>
Date: Tue Jun 20 17:22:52 2017 +0530
Fill the NH of the packet in fragment assembler
When fragments are recieved out of order, assembler code caches them
till head fragment is received. While holding the packet, packet's nh is
not cached to avoid taking a reference to NH. Once the head fragment is
received, these out of order fragments are released for flow processing.
While doing this, packet's nh is not filled if the encap is Vxlan packet
as this requires a mac address lookup. For Mpls packets, label is looked
up to extract the NH. Not filling the NH, is resulting in Flow lookup
failure as NH id is also a key for the flow table. Failure to look up
the original flow entry (of head fragment) results in either creating
the new flow entry (with wrong key nh id) in Hold state, or dropping the
packet without flow processing.
To avoid this, bridge look up is done in the given VRF, to extract the
NH.
Reviewed: https:/ /review. opencontrail. org/33058 github. com/Juniper/ contrail- vrouter/ commit/ f107eaf4a2cd5fb d39bbb36f81289c 49838dddf8
Committed: http://
Submitter: Zuul (<email address hidden>)
Branch: R3.1.1.x
commit f107eaf4a2cd5fb d39bbb36f81289c 49838dddf8
Author: Divakar D <email address hidden>
Date: Tue Jun 20 17:22:52 2017 +0530
Fill the NH of the packet in fragment assembler
When fragments are recieved out of order, assembler code caches them
till head fragment is received. While holding the packet, packet's nh is
not cached to avoid taking a reference to NH. Once the head fragment is
received, these out of order fragments are released for flow processing.
While doing this, packet's nh is not filled if the encap is Vxlan packet
as this requires a mac address lookup. For Mpls packets, label is looked
up to extract the NH. Not filling the NH, is resulting in Flow lookup
failure as NH id is also a key for the flow table. Failure to look up
the original flow entry (of head fragment) results in either creating
the new flow entry (with wrong key nh id) in Hold state, or dropping the
packet without flow processing.
To avoid this, bridge look up is done in the given VRF, to extract the
NH.
closes-bug: #1698986
Conflicts: vr_bridge. c vr_bridge. h
dp-core/
dp-core/vr_flow.c
include/
Change-Id: Idf50ba23c1b04c 828080cf258d1af 35205bb1b4a