netdev - [PATCH net-next 0/2] net: bridge: add support for backup port

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180720144826.29892-1-nikolay@cumulusnetworks.com>
Date:   Fri, 20 Jul 2018 17:48:24 +0300
From:   Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
To:     netdev@...r.kernel.org
Cc:     roopa@...ulusnetworks.com, anuradhak@...ulusnetworks.com,
        stephen@...workplumber.org, bridge@...ts.linux-foundation.org,
        wkok@...ulusnetworks.com, davem@...emloft.net,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Subject: [PATCH net-next 0/2] net: bridge: add support for backup port

Hi,
This set introduces a new bridge port option that allows any port to have
any other port (in the same bridge of course) as its backup and traffic
will be forwarded to the backup port when the primary goes down. This is
mainly used in MLAG and EVPN setups where we have peerlink path which is
a backup of many (or even all) ports and is a participating bridge port
itself. There's more detailed information in patch 02. Patch 01 just
prepares the port sysfs code for options that take raw value. The main
issues that this set solves are scalability and fallback latency.

We have used similar code for over 6 months now to bring the fallback
latency of the backup peerlink down and avoid fdb notification storms.
Also due to the nature of master devices such setup is currently not
possible, and last but not least having tens of thousands of fdbs require
thousands of calls to switch.

I've also CCed our MLAG experts that have been using similar option.

Thanks,
 Nik

Nikolay Aleksandrov (2):
  net: bridge: add support for raw sysfs port options
  net: bridge: add support for backup port

 include/uapi/linux/if_link.h |  1 +
 net/bridge/br_forward.c      | 16 ++++++++-
 net/bridge/br_if.c           | 53 ++++++++++++++++++++++++++++
 net/bridge/br_netlink.c      | 30 +++++++++++++++-
 net/bridge/br_private.h      |  3 ++
 net/bridge/br_sysfs_if.c     | 82 ++++++++++++++++++++++++++++++++++++--------
 6 files changed, 168 insertions(+), 17 deletions(-)

-- 
2.11.0