netdev - Re: [RFC PATCH net-next] bonding: Use notifiers for slave link state detection

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Date:	Thu, 07 Jan 2016 22:12:50 -0800
From:	Jay Vosburgh <jay.vosburgh@...onical.com>
To:	zhuyj <zyjzyj2000@...il.com>
cc:	emil.s.tantilov@...el.com, mkubecek@...e.cz, vfalico@...il.com,
	gospo@...ulusnetworks.com, netdev@...r.kernel.org,
	boris.shteinbock@...driver.com
Subject: Re: [RFC PATCH net-next] bonding: Use notifiers for slave link state detection

zhuyj <zyjzyj2000@...il.com> wrote:

>Hi, Jay
>
>Thank for your help.
>I made a new patch based on the latest linux kernel. Now it is in the
>attachment.
>When I run "make", the following errors will pop up.
[...]
>drivers/net/bonding/bond_main.c:1996:3: error: too many arguments to
>function ‘bond_set_slave_link_state’
>include/net/bonding.h:507:20: note: declared here

	My patch was generated against the current net-next git
repository.  I suspect you're using an older kernel; since commit

5d397061ca20 ("bonding: allow notifications for bond_set_slave_link_state")

	the bond_set_slave_link_state function has three arguments.
This commit was added 3 Dec 2015.

	For example, from your patch:

>-			bond_set_slave_link_state(slave, BOND_LINK_FAIL);
[...]
>+		bond_set_slave_link_state(slave, BOND_LINK_FAIL, BOND_SLAVE_NOTIFY_LATER);

	For your kernel version, you'll need to change the patched code
to remove the third argument to bond_set_slave_link_state.

>And I can not find notifier callbacks in the patch.

	The bond_slave_netdev_event function is bonding's notifier
callback; the patch adds a call there for NETDEV_UP, NETDEV_CHANGE and
NETDEV_DOWN events to check link state:

> 	case NETDEV_DOWN:
>+		if (bond_miimon_inspect_slave(bond, slave))
>+			bond_miimon_commit(bond);
>+

	-J

---
	-Jay Vosburgh, jay.vosburgh@...onical.com