[ovs-dev] [PATCH 0/6] Address MTU issue for larger packets in OVN

[nusiddiq at redhat.com]

From: Numan Siddique <nusiddiq at redhat.com>

This series addresses the MTU issues for OVN reported
here [1].

This series has 6 patches
 
Patch 1 adds a new OVS action - check_pkt_larger. It makes use
of the datapath action - 'check_pkt_len' which was added
recently to net-next [2].

Patch 2 is the datapath patch from [1] for the OVS in tree datapath
code.

Patch 2 is submitted after patch 1 to avoid the compilation issues
since we are adding a new action attr - OVS_ACTION_ATTR_CHECK_PKT_LEN.

Patch 3 to 6 are OVN patches.

This patch series addressed most of the comments received for the RFC
series.

Patch 1 still hasn't addressed the comment for the usage of
'check_pkt_larger' action i.e check_pkt_larger(len)->REG_BIT.

[1] - https://mail.openvswitch.org/pipermail/ovs-discuss/2018-July/047039.html
[2] - https://kernel.googlesource.com/pub/scm/linux/kernel/git/davem/net-next/+/4d5ec89fc8d14dcdab7214a0c13a1c7321dc6ea9

Numan Siddique (6):
  Add a new OVS action check_pkt_larger
  datapath: Add a new action check_pkt_len
  ovn: Add a new OVN field icmp4.frag_mtu
  ovn: Add a new OVN action 'icmp4_error'
  ovn: Support OVS action 'check_pkt_larger' in OVN
  ovn: Generate ICMPv4 packet in router pipeline for larger packets

 NEWS                                          |   2 +
 datapath/actions.c                            |  44 ++++
 datapath/flow_netlink.c                       | 171 +++++++++++++++
 .../linux/compat/include/linux/openvswitch.h  |  39 ++++
 include/openvswitch/ofp-actions.h             |  19 ++
 include/ovn/actions.h                         |  42 +++-
 include/ovn/automake.mk                       |   3 +-
 include/ovn/expr.h                            |   5 +
 {ovn/lib => include/ovn}/logical-fields.h     |  39 ++++
 lib/dpif-netdev.c                             |   1 +
 lib/dpif.c                                    |   1 +
 lib/odp-execute.c                             |  72 +++++++
 lib/odp-util.c                                |  86 ++++++++
 lib/ofp-actions.c                             | 121 ++++++++++-
 lib/ofp-parse.c                               |  10 +
 lib/ovs-actions.xml                           |  31 +++
 ofproto/ofproto-dpif-ipfix.c                  |   1 +
 ofproto/ofproto-dpif-sflow.c                  |   1 +
 ofproto/ofproto-dpif-xlate.c                  | 131 ++++++++++++
 ofproto/ofproto-dpif.c                        |  43 ++++
 ofproto/ofproto-dpif.h                        |   5 +-
 ovn/controller/lflow.c                        |   1 +
 ovn/controller/lflow.h                        |   2 +-
 ovn/controller/pinctrl.c                      | 109 +++++++++-
 ovn/lib/actions.c                             | 121 ++++++++++-
 ovn/lib/automake.mk                           |   1 -
 ovn/lib/expr.c                                |  17 +-
 ovn/lib/logical-fields.c                      |  36 +++-
 ovn/northd/ovn-northd.8.xml                   |  83 +++++++-
 ovn/northd/ovn-northd.c                       |  94 +++++++-
 ovn/ovn-sb.xml                                |  41 +++-
 ovn/utilities/ovn-trace.c                     |  34 ++-
 tests/odp.at                                  |   5 +
 tests/ofp-actions.at                          |   6 +
 tests/ofproto-dpif.at                         | 163 ++++++++++++++
 tests/ovn.at                                  | 200 ++++++++++++++++++
 tests/test-ovn.c                              |   2 +-
 37 files changed, 1753 insertions(+), 29 deletions(-)
 rename {ovn/lib => include/ovn}/logical-fields.h (73%)

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2.20.1