netdev - Re: [patch iproute2] iplink: add support for bonding netlink

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Date:	Tue, 29 Oct 2013 19:00:20 +0000 (UTC)
From:	Scott Feldman <sfeldma@...ulusnetworks.com>
To:	netdev@...r.kernel.org
Subject: Re: [patch iproute2] iplink: add support for bonding netlink

Jiri Pirko <jiri <at> resnulli.us> writes:

> +		} else if (matches(*argv, "active_slave") == 0) {
> +			NEXT_ARG();
> +			ifindex = if_nametoindex(*argv);
> +			if (!ifindex)
> +				return -1;
> +			addattr32(n, 1024, IFLA_BOND_ACTIVE_SLAVE, ifindex);
> +		} else if (matches(*argv, "clear_active_slave") == 0) {
> +			addattr32(n, 1024, IFLA_BOND_ACTIVE_SLAVE, 0);

How do active_slave and clear_active_slave work from the ip link cmd line 
when bond is added, but doesn't have any slaves yet?  I did:

  ip link add bond1 type bond mode 1
  ip link set dev eth1 master bond1
  ip link set dev eth2 master bond1

Then tried:

  ip link add bond1 type bond active_slave eth1
  RTNETLINK answers: File exists

Or:

  ip link set dev bond1 active_slave eth1
  Error: either "dev" is duplicate, or "active_slave" is a garbage.

I must be dense but I can't figure how you can set active_slave before 
slaves have been added to bond, or even after slaves have been added 
to bond.

> diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in
> index 8b68c78..1825dc5 100644
> --- a/man/man8/ip-link.8.in
> +++ b/man/man8/ip-link.8.in
>  <at>  <at>  -51,6 +51,7  <at>  <at>  ip-link \- network device configuration
>  .ti -8
>  .IR TYPE " := [ "
>  .BR bridge " | "
> +.BR bond " ]"

That should be " | "?

With patch applied, the man page shows:

       TYPE := [ bridge | bond ] can | dummy | ifb | ipoib | macvlan | ...

-scott

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