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[ipv6] Reduce time spent waiting for router discovery 

Now that IPv6 is enabled by default for UEFI builds, it is important
that iPXE does not delay unnecessarily in the (still relatively
common) case of a network that lacks IPv6 routers.

Apply the timeout values used for neighbour discovery to the router
discovery process.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/171/head
Michael Brown 2020-10-14 14:52:13 +01:00
parent 0c25daad38
commit 6ccd5239b1
1 changed files with 9 additions and 0 deletions
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9
src/net/ndp.c
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@ -31,6 +31,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/icmpv6.h>
#include <ipxe/neighbour.h>
#include <ipxe/dhcpv6.h>
#include <ipxe/timer.h>
#include <ipxe/ndp.h>
/** @file
@ -39,6 +40,12 @@ FILE_LICENCE ( GPL2_OR_LATER );
*
*/
/** Router discovery minimum timeout */
#define IPV6CONF_MIN_TIMEOUT ( TICKS_PER_SEC / 8 )
/** Router discovery maximum timeout */
#define IPV6CONF_MAX_TIMEOUT ( TICKS_PER_SEC * 3 )
static struct ipv6conf * ipv6conf_demux ( struct net_device *netdev );
static int
ipv6conf_rx_router_advertisement ( struct net_device *netdev,
@ -1235,6 +1242,8 @@ int start_ipv6conf ( struct interface *job, struct net_device *netdev ) {
intf_init ( &ipv6conf->job, &ipv6conf_job_desc, &ipv6conf->refcnt );
intf_init ( &ipv6conf->dhcp, &ipv6conf_dhcp_desc, &ipv6conf->refcnt );
timer_init ( &ipv6conf->timer, ipv6conf_expired, &ipv6conf->refcnt );
set_timer_limits ( &ipv6conf->timer, IPV6CONF_MIN_TIMEOUT,
IPV6CONF_MAX_TIMEOUT );
ipv6conf->netdev = netdev_get ( netdev );
/* Start timer to initiate router solicitation */