Messages in this thread | | | Date | Tue, 25 Mar 2014 16:36:39 +0800 | From | "zheng.li" <> | Subject | Re: [PATCH] bonding: Inactive slaves should keep inactive flag's value to 1 in tlb and alb mode. |
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于 2014年03月25日 11:42, Ding Tianhong 写道: > On 2014/3/25 11:00, Zheng Li wrote: >> In bond mode tlb and alb, inactive slaves should keep inactive flag to >> 1 to refuse to receive broadcast packets. Now, active slave send broadcast packets >> (for example ARP requests) which will arrive inactive slaves on same host from switch, >> but inactive slave's inactive flag is zero that cause bridge receive the broadcast >> packets to produce a wrong entry in forward table. Typical situation is domu send some >> ARP request which go out from dom0 bond's active slave, then the ARP broadcast request >> packets go back to inactive slave from switch, because the inactive slave's inactive >> flag is zero, kernel will receive the packets and pass them to bridge, that cause dom0's >> bridge map domu's MAC address to port of bond, bridge should map domu's MAC to port of vif. >> >> Signed-off-by: Zheng Li <zheng.x.li@oracle.com> >> --- >> drivers/net/bonding/bond_main.c | 2 +- >> 1 files changed, 1 insertions(+), 1 deletions(-) >> >> diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c >> index e5628fc..8761df6 100644 >> --- a/drivers/net/bonding/bond_main.c >> +++ b/drivers/net/bonding/bond_main.c >> @@ -3062,7 +3062,7 @@ static int bond_open(struct net_device *bond_dev) >> && (slave != bond->curr_active_slave)) { >> bond_set_slave_inactive_flags(slave, >> BOND_SLAVE_NOTIFY_NOW); >> - } else { >> + } else if (!bond_is_lb(bond)) { >> bond_set_slave_active_flags(slave, >> BOND_SLAVE_NOTIFY_NOW); >> } >> > I think you did not fix the problem completely, the state monitor will change the status for the slaves > and the inactive slave still could receive the broadcast.
Had tested, it can fix the issue, verified by our QA. Default set slave of bond as inactive when add a slave to bond, when link UP, just set one slave as current active slave and clear its inactive flag, the inactive slave's inactive flag will keep the value of 1.
> > Regards > Ding > > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
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