Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756726Ab2KOJo1 (ORCPT ); Thu, 15 Nov 2012 04:44:27 -0500 Received: from userp1040.oracle.com ([156.151.31.81]:34924 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755533Ab2KOJoY (ORCPT ); Thu, 15 Nov 2012 04:44:24 -0500 From: Zheng Li To: netdev@vger.kernel.org, fubar@us.ibm.com, andy@greyhouse.net Cc: linux-kernel@vger.kernel.org, davem@davemloft.net, joe.jin@oracle.com, zheng.x.li@oracle.com Subject: [PATCH] bonding: rlb mode of bond should not alter ARP originating via bridge Date: Thu, 15 Nov 2012 17:47:41 +0800 Message-Id: <1352972861-17577-1-git-send-email-zheng.x.li@oracle.com> X-Mailer: git-send-email 1.7.6.5 X-Source-IP: acsinet22.oracle.com [141.146.126.238] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2187 Lines: 70 ARP traffic passing through a bridge and out via the bond (when the bond is a port of the bridge) should not have its source MAC address adjusted by the receive load balance code in rlb_arp_xmit. Signed-off-by: Zheng Li Cc: Jay Vosburgh Cc: Andy Gospodarek Cc: "David S. Miller" --- drivers/net/bonding/bond_alb.c | 6 ++++++ drivers/net/bonding/bonding.h | 13 +++++++++++++ 2 files changed, 19 insertions(+), 0 deletions(-) diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c index e15cc11..75f6f0d 100644 --- a/drivers/net/bonding/bond_alb.c +++ b/drivers/net/bonding/bond_alb.c @@ -694,6 +694,12 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond) struct arp_pkt *arp = arp_pkt(skb); struct slave *tx_slave = NULL; + /* Only modify ARP's MAC if it originates locally; + * don't change ARPs arriving via a bridge. + */ + if (!bond_slave_has_mac(bond, arp->mac_src)) + return NULL; + if (arp->op_code == htons(ARPOP_REPLY)) { /* the arp must be sent on the selected * rx channel diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h index f8af2fc..6dded56 100644 --- a/drivers/net/bonding/bonding.h +++ b/drivers/net/bonding/bonding.h @@ -22,6 +22,7 @@ #include #include #include +#include #include "bond_3ad.h" #include "bond_alb.h" @@ -450,6 +451,18 @@ static inline void bond_destroy_proc_dir(struct bond_net *bn) } #endif +static inline struct slave *bond_slave_has_mac(struct bonding *bond, + const u8 *mac) +{ + int i = 0; + struct slave *tmp; + + bond_for_each_slave(bond, tmp, i) + if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) + return tmp; + + return NULL; +} /* exported from bond_main.c */ extern int bond_net_id; -- 1.7.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/