netdev - Re: [net-next PATCH] net: ipv4: increase dhcp inter device timeout

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Date:	Wed, 12 Aug 2015 16:40:41 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	mugunthanvnm@...com
Cc:	netdev@...r.kernel.org
Subject: Re: [net-next PATCH] net: ipv4: increase dhcp inter device timeout

From: Mugunthan V N <mugunthanvnm@...com>
Date: Wed, 12 Aug 2015 15:31:43 +0530

> When a system has multiple ethernet devices and during DHCP
> request (for using NFS), the system waits only for HZ/2 which is
> 500mS before switching to another interface for DHCP.
> 
> There are some routers (Ex: Trendnet routers) which responds to
> DHCP request at about 560mS. When the system has only one
> ethernet interface there is no issue as the timeout is 2S and the
> dev xid doesn't changes and only retries.
> 
> But when the system has multiple Ethernet like DRA74x with CPSW
> in dual EMAC mode, the DHCP response is dropped as the dev xid
> changes while shifting to the next device. So changing inter
> device timeout to HZ (which is 1S).
> 
> Signed-off-by: Mugunthan V N <mugunthanvnm@...com>

Applied, thanks.
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