From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
To: qemu-devel@nongnu.org, berrange@redhat.com, kraxel@redhat.com,
eblake@redhat.com, armbru@redhat.com, pabeni@redhat.com
Cc: peterx@redhat.com, quintela@redhat.com
Subject: Re: [PATCH v2 0/5] mptcp support
Date: Tue, 8 Jun 2021 19:37:06 +0100 [thread overview]
Message-ID: <YL+40seTN8bONFSm@work-vm> (raw)
In-Reply-To: <20210421112834.107651-1-dgilbert@redhat.com>
* Dr. David Alan Gilbert (git) (dgilbert@redhat.com) wrote:
> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
>
> Hi,
> This set adds support for multipath TCP (mptcp), and has
> been tested for migration and (lightly) for NBD.
>
> Multipath-tcp is a bit like bonding, but at L3; you can use
> it to handle failure, but can also use it to split traffic across
> multiple interfaces.
>
> Using a pair of 10Gb interfaces, I've managed to get 19Gbps
> (with the only tuning being using huge pages and turning the MTU up).
>
> It needs a bleeding-edge Linux kernel (in some older ones you get
> false accept messages for the subflows), and a C lib that has the
> constants defined (as current glibc does).
>
> To use it you just need to append ,mptcp to an address; for migration:
>
> -incoming tcp:0:4444,mptcp
> migrate -d tcp:192.168.11.20:4444,mptcp
>
> For nbd:
>
> (qemu) nbd_server_start 0.0.0.0:3333,mptcp=on
>
> -blockdev driver=nbd,server.type=inet,server.host=192.168.11.20,server.port=3333,server.mptcp=on,node-name=nbddisk,export=mydisk \
> -device virtio-blk,drive=nbddisk,id=disk0
>
> (Many of the other NBD address parsers/forms would need extra work)
>
> All comments welcome.
>
> Dave
Queued
>
> v2
> Use of if defined(...) in the json file based on feedback
> A few missing ifdef's (from a bsd build test)
> Added nbd example.
>
>
> Dr. David Alan Gilbert (5):
> channel-socket: Only set CLOEXEC if we have space for fds
> io/net-listener: Call the notifier during finalize
> migration: Add cleanup hook for inwards migration
> migration/socket: Close the listener at the end
> sockets: Support multipath TCP
>
> io/channel-socket.c | 8 ++++----
> io/dns-resolver.c | 4 ++++
> io/net-listener.c | 3 +++
> migration/migration.c | 3 +++
> migration/migration.h | 4 ++++
> migration/multifd.c | 5 +++++
> migration/socket.c | 24 ++++++++++++++++++------
> qapi/sockets.json | 5 ++++-
> util/qemu-sockets.c | 23 +++++++++++++++++++++++
> 9 files changed, 68 insertions(+), 11 deletions(-)
>
> --
> 2.31.1
>
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
prev parent reply other threads:[~2021-06-08 18:38 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-21 11:28 [PATCH v2 0/5] mptcp support Dr. David Alan Gilbert (git)
2021-04-21 11:28 ` [PATCH v2 1/5] channel-socket: Only set CLOEXEC if we have space for fds Dr. David Alan Gilbert (git)
2021-04-21 11:28 ` [PATCH v2 2/5] io/net-listener: Call the notifier during finalize Dr. David Alan Gilbert (git)
2021-04-21 11:28 ` [PATCH v2 3/5] migration: Add cleanup hook for inwards migration Dr. David Alan Gilbert (git)
2021-04-21 11:28 ` [PATCH v2 4/5] migration/socket: Close the listener at the end Dr. David Alan Gilbert (git)
2021-04-21 11:28 ` [PATCH v2 5/5] sockets: Support multipath TCP Dr. David Alan Gilbert (git)
2021-04-23 11:17 ` Markus Armbruster
2021-04-23 11:20 ` Daniel P. Berrangé
2021-04-26 12:26 ` Dr. David Alan Gilbert
2021-05-11 10:04 ` Daniel P. Berrangé
2021-06-08 18:37 ` Dr. David Alan Gilbert [this message]
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