netdev - Bonding/LACP on RTL8169sc/8110sc (R1869)

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Date:	Tue, 12 Apr 2011 09:35:20 -0400
From:	Jonathan Thibault <jonathan@...igue.com>
To:	netdev@...r.kernel.org
CC:	Francois Romieu <romieu@...zoreil.com>
Subject: Bonding/LACP on RTL8169sc/8110sc (R1869)

Greetings all,

I have a a pair of Jetway motherboards with an add-on 3Gbit LAN modules
and have been doing some testing for a linux router project.  I found
that I while I can get LACP working properly using eth0 and eth1, using
the exact same setup with any of the other three lan fails.  Is this a
known issue?

This is on Linux 2.6.32.10.  Here is a blurb of dmesg showing the NICs
detected.

eth0: RTL8168b/8111b at 0xf8adc000, 00:30:18:ac:a6:80, XID 0c200000 IRQ 24
eth1: RTL8168b/8111b at 0xf8ae0000, 00:30:18:ac:a6:81, XID 0c200000 IRQ 25
eth2: RTL8169sc/8110sc at 0xf8ae4c00, 00:30:18:ae:34:3a, XID 18000000 IRQ 18
eth3: RTL8169sc/8110sc at 0xf8ae8800, 00:30:18:ae:34:3b, XID 18000000 IRQ 19
eth4: RTL8169sc/8110sc at 0xf8aec400, 00:30:18:ae:34:3c, XID 18000000 IRQ 16

I can probably manage this project using only eth0 and eth1 in LACP
configuration but I figured I'd give a heads up.

The interfaces seem able to detect when the link is up or down, bonding
removes and adds them to the LACP trunk but I can't get traffic through
them.

Kind regards,

Jonathan
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