Introduce generic vswitch framework in vhost-switch application. Following
are the goals/aim of the framework:
1. Make vhost-switch application generic so that it can support devices
which don't support VMDQ.
2. Provide a framework so that any switching logic (generic in software or
vendor specefic like VMDQ) can work with vhost-switch. Thus making vhost-switch
applicable for multiple platforms of different vendors.
3. Make vhost-switch and switching logic scalable in terms of ports or policies
of doing rx/tx across the ports added to switch.
The patchset includes three patches:
1. "Add vswitch(generic switch) framework": This adds the generic framework, it
provides
the APIs/accessor functions which the vhos-switch application uses without
knowing
anything about underlying switching logic. The framework introduces the concept
of
vswitch_device, vswitch_port, and vswitch_ops. The idea is that vhost-switch
will
sit over the framework and different switching logics will plug into the
framework
underneath it. Please refer the patch description for more details of devices,
ports
and ops.
2. "Add vswitch command line options": Adds two new command line options for
vswitch.
3. "Add VMDQ vswitch device": This patch basically delinks existing
vhost/main.[c,h]
from VMDQ and adds VMDQ as a vswitch device implmentation which plugs into the
vswitch
framework. Any other vendor logic for switching can also be plugged in same way.
Thanks to Tan Jianfeng, Yuanhan Liu, Maxime coquelin for early discussions and
inputs
on this concept.
TODO list:
1. Addd constructor based logic for registration of Vswitch implmentations like
VMDQ.
we will use similar mechanism as registration of PMD drivers (base on
constructor function)
to register all the switch implmentations in vhost-switch and then select the
required
implementation using command line option 'switch'.
2. Test VM2VM hardware mode: I tried following command it didn't work:
vhost-switch -c f -n 4 --socket-mem 1024 --huge-dir /mnt/huge -- -p 0x1
--vm2vm 2
--vlan-strip 1 --dev-basename usvhost
I tried same command on upstream master also but it didn't work, that means i
am doing something
wrong, please help me with correct method to test it. Or now the patches are
working, so
if possible please give a try to hardware VM2VM mode.
3. Changes for Maxime's comment on freeing of buffers in vs_looup_n_fwd(). I
wasn't clear about
what is the right way to handle, we'll fix it after getting feedback from
Maxime.
Change Log
==========
v1->v2
------
1. Tested following:
- Ping and iperf from VM to external machine connected to Phys port.
- Ping and iperf betweeen 2 VMs in software vm2vm mode
- My testsetup is:
- vhost & VM machine: xeonD1521 with Network card:
X552/X557-AT 10GBASE-T
- Peer connected to VM machine: OptiPlex-790 with 82574L
Gigabit card
2. Incorporated changes for all the comments from Maxime Coquelin. One comment
is not yet
taken care off, and it is listed in TODO list.
Pankaj Chauhan (3):
examples/vhost: Add vswitch (generic switch) framework
examples/vhost: Add vswitch command line options
examples/vhost: Add VMDQ vswitch device
examples/vhost/Makefile | 2 +-
examples/vhost/main.c | 651 +++++++++++++-------------------------
examples/vhost/main.h | 10 +
examples/vhost/vmdq.c | 669 ++++++++++++++++++++++++++++++++++++++++
examples/vhost/vmdq.h | 57 ++++
examples/vhost/vswitch_common.c | 499 ++++++++++++++++++++++++++++++
examples/vhost/vswitch_common.h | 186 +++++++++++
examples/vhost/vswitch_txrx.c | 97 ++++++
examples/vhost/vswitch_txrx.h | 71 +++++
9 files changed, 1800 insertions(+), 442 deletions(-)
create mode 100644 examples/vhost/vmdq.c
create mode 100644 examples/vhost/vmdq.h
create mode 100644 examples/vhost/vswitch_common.c
create mode 100644 examples/vhost/vswitch_common.h
create mode 100644 examples/vhost/vswitch_txrx.c
create mode 100644 examples/vhost/vswitch_txrx.h
--
1.9.1
