[ovs-dev] [PATCH v2 0/6] Address MTU issue for larger packets in OVN

[Ben Pfaff]

Hi Greg, would you mind taking a look at the beginning of this series,
to review the backport of the kernel changes that are now in net-next?

Thanks,

Ben.

On Fri, Apr 12, 2019 at 06:34:47PM +0530, nusiddiq at redhat.com wrote:
> 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
> 
> 
> v1 -> v2
> ------ 
>   * Updated the commit message of patch 2 to include the net-next commit
>     id, author and date.
> 
> No other changes.
> 
> 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%)
> 
> -- 
> 2.20.1
> 
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