From patchwork Wed Jan 18 22:24:54 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Bohac X-Patchwork-Id: 136701 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3AD51B6EE7 for ; Thu, 19 Jan 2012 09:25:01 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753645Ab2ARWY4 (ORCPT ); Wed, 18 Jan 2012 17:24:56 -0500 Received: from cantor2.suse.de ([195.135.220.15]:55005 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753197Ab2ARWYz (ORCPT ); Wed, 18 Jan 2012 17:24:55 -0500 Received: from relay2.suse.de (unknown [195.135.220.254]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx2.suse.de (Postfix) with ESMTP id 2FFA590182; Wed, 18 Jan 2012 23:24:54 +0100 (CET) Date: Wed, 18 Jan 2012 23:24:54 +0100 From: Jiri Bohac To: fubar@us.ibm.com, netdev@vger.kernel.org Subject: [PATCH] bonding: fix enslaving in alb mode when link down Message-ID: <20120118222454.GA11966@midget.suse.cz> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org bond_alb_init_slave() is called from bond_enslave() and sets the slave's MAC address. This is done differently for TLB and ALB modes. bond->alb_info.rlb_enabled is used to discriminate between the two modes but this flag may be uninitialized if the slave is being enslaved prior to calling bond_open() -> bond_alb_initialize() on the master. It turns out all the callers of alb_set_slave_mac_addr() pass bond->alb_info.rlb_enabled as the hw parameter. This patch cleans up the unnecessary parameter of alb_set_slave_mac_addr() and makes the function decide based on the bonding mode instead, which fixes the above problem. Signed-off-by: Jiri Bohac Signed-off-by: Jay Vosburgh diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c index 342626f..f820b26 100644 --- a/drivers/net/bonding/bond_alb.c +++ b/drivers/net/bonding/bond_alb.c @@ -909,16 +909,12 @@ static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[]) } } -/* hw is a boolean parameter that determines whether we should try and - * set the hw address of the device as well as the hw address of the - * net_device - */ -static int alb_set_slave_mac_addr(struct slave *slave, u8 addr[], int hw) +static int alb_set_slave_mac_addr(struct slave *slave, u8 addr[]) { struct net_device *dev = slave->dev; struct sockaddr s_addr; - if (!hw) { + if (slave->bond->params.mode == BOND_MODE_TLB) { memcpy(dev->dev_addr, addr, dev->addr_len); return 0; } @@ -948,8 +944,8 @@ static void alb_swap_mac_addr(struct bonding *bond, struct slave *slave1, struct u8 tmp_mac_addr[ETH_ALEN]; memcpy(tmp_mac_addr, slave1->dev->dev_addr, ETH_ALEN); - alb_set_slave_mac_addr(slave1, slave2->dev->dev_addr, bond->alb_info.rlb_enabled); - alb_set_slave_mac_addr(slave2, tmp_mac_addr, bond->alb_info.rlb_enabled); + alb_set_slave_mac_addr(slave1, slave2->dev->dev_addr); + alb_set_slave_mac_addr(slave2, tmp_mac_addr); } @@ -1096,8 +1092,7 @@ static int alb_handle_addr_collision_on_attach(struct bonding *bond, struct slav /* Try setting slave mac to bond address and fall-through to code handling that situation below... */ - alb_set_slave_mac_addr(slave, bond->dev->dev_addr, - bond->alb_info.rlb_enabled); + alb_set_slave_mac_addr(slave, bond->dev->dev_addr); } /* The slave's address is equal to the address of the bond. @@ -1133,8 +1128,7 @@ static int alb_handle_addr_collision_on_attach(struct bonding *bond, struct slav } if (free_mac_slave) { - alb_set_slave_mac_addr(slave, free_mac_slave->perm_hwaddr, - bond->alb_info.rlb_enabled); + alb_set_slave_mac_addr(slave, free_mac_slave->perm_hwaddr); pr_warning("%s: Warning: the hw address of slave %s is in use by the bond; giving it the hw address of %s\n", bond->dev->name, slave->dev->name, @@ -1491,8 +1485,7 @@ int bond_alb_init_slave(struct bonding *bond, struct slave *slave) { int res; - res = alb_set_slave_mac_addr(slave, slave->perm_hwaddr, - bond->alb_info.rlb_enabled); + res = alb_set_slave_mac_addr(slave, slave->perm_hwaddr); if (res) { return res; } @@ -1643,8 +1636,7 @@ void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave alb_swap_mac_addr(bond, swap_slave, new_slave); } else { /* set the new_slave to the bond mac address */ - alb_set_slave_mac_addr(new_slave, bond->dev->dev_addr, - bond->alb_info.rlb_enabled); + alb_set_slave_mac_addr(new_slave, bond->dev->dev_addr); } if (swap_slave) { @@ -1704,8 +1696,7 @@ int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr) alb_swap_mac_addr(bond, swap_slave, bond->curr_active_slave); alb_fasten_mac_swap(bond, swap_slave, bond->curr_active_slave); } else { - alb_set_slave_mac_addr(bond->curr_active_slave, bond_dev->dev_addr, - bond->alb_info.rlb_enabled); + alb_set_slave_mac_addr(bond->curr_active_slave, bond_dev->dev_addr); read_lock(&bond->lock); alb_send_learning_packets(bond->curr_active_slave, bond_dev->dev_addr);