]> git.karo-electronics.de Git - linux-beck.git/commit
net: introduce ethernet teaming device
authorJiri Pirko <jpirko@redhat.com>
Fri, 11 Nov 2011 22:16:48 +0000 (22:16 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sun, 13 Nov 2011 21:10:10 +0000 (16:10 -0500)
commit3d249d4ca7d0ed6629a135ea1ea21c72286c0d80
treee89c8b6bbf4f8d0e4a3428304c26305eca76e4b8
parent5d70b88cd41ef0f2ac0caaab4fd492dd686feee6
net: introduce ethernet teaming device

This patch introduces new network device called team. It supposes to be
very fast, simple, userspace-driven alternative to existing bonding
driver.

Userspace library called libteam with couple of demo apps is available
here:
https://github.com/jpirko/libteam
Note it's still in its dipers atm.

team<->libteam use generic netlink for communication. That and rtnl
suppose to be the only way to configure team device, no sysfs etc.

Python binding of libteam was recently introduced.
Daemon providing arpmon/miimon active-backup functionality will be
introduced shortly. All what's necessary is already implemented in
kernel team driver.

v7->v8:
- check ndo_ndo_vlan_rx_[add/kill]_vid functions before calling
  them.
- use dev_kfree_skb_any() instead of dev_kfree_skb()

v6->v7:
- transmit and receive functions are not checked in hot paths.
  That also resolves memory leak on transmit when no port is
  present

v5->v6:
- changed couple of _rcu calls to non _rcu ones in non-readers

v4->v5:
- team_change_mtu() uses team->lock while travesing though port
  list
- mac address changes are moved completely to jurisdiction of
  userspace daemon. This way the daemon can do FOM1, FOM2 and
  possibly other weird things with mac addresses.
  Only round-robin mode sets up all ports to bond's address then
  enslaved.
- Extended Kconfig text

v3->v4:
- remove redundant synchronize_rcu from __team_change_mode()
- revert "set and clear of mode_ops happens per pointer, not per
  byte"
- extend comment of function __team_change_mode()

v2->v3:
- team_change_mtu() uses rcu version of list traversal to unwind
- set and clear of mode_ops happens per pointer, not per byte
- port hashlist changed to be embedded into team structure
- error branch in team_port_enter() does cleanup now
- fixed rtln->rtnl

v1->v2:
- modes are made as modules. Makes team more modular and
  extendable.
- several commenters' nitpicks found on v1 were fixed
- several other bugs were fixed.
- note I ignored Eric's comment about roundrobin port selector
  as Eric's way may be easily implemented as another mode (mode
  "random") in future.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 files changed:
Documentation/networking/team.txt [new file with mode: 0644]
MAINTAINERS
drivers/net/Kconfig
drivers/net/Makefile
drivers/net/team/Kconfig [new file with mode: 0644]
drivers/net/team/Makefile [new file with mode: 0644]
drivers/net/team/team.c [new file with mode: 0644]
drivers/net/team/team_mode_activebackup.c [new file with mode: 0644]
drivers/net/team/team_mode_roundrobin.c [new file with mode: 0644]
include/linux/Kbuild
include/linux/if.h
include/linux/if_team.h [new file with mode: 0644]