Hi, Mugunthan V N wrote: > 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 change 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 <mugunthan...@ti.com> > --- > net/ipv4/ipconfig.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c > index 8e7328c..bdb8cb5 100644 > --- a/net/ipv4/ipconfig.c > +++ b/net/ipv4/ipconfig.c > @@ -94,7 +94,7 @@ > /* Define the timeout for waiting for a DHCP/BOOTP/RARP reply */ > #define CONF_OPEN_RETRIES 2 /* (Re)open devices twice */ > #define CONF_SEND_RETRIES 6 /* Send six requests per open */ > -#define CONF_INTER_TIMEOUT (HZ/2) /* Inter-device timeout: 1/2 second */ > +#define CONF_INTER_TIMEOUT (HZ) /* Inter-device timeout: 1/2 second */
You should update comment as well at least. --yoshfuji > #define CONF_BASE_TIMEOUT (HZ*2) /* Initial timeout: 2 seconds */ > #define CONF_TIMEOUT_RANDOM (HZ) /* Maximum amount of randomization */ > #define CONF_TIMEOUT_MULT *7/4 /* Rate of timeout growth */ > -- Hideaki Yoshifuji <hideaki.yoshif...@miraclelinux.com> Technical Division, MIRACLE LINUX CORPORATION -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
