From 2fed42cd45234f5ee34dfed00c3f41d084c39a96 Mon Sep 17 00:00:00 2001 From: rwatson Date: Thu, 26 Sep 2002 19:56:43 +0000 Subject: Apparently pxeboot passes in a mygateway of non-zero sin length from DHCP in the event that no gateway is returned from DHCP, breaking the assumption that we skip the routing insertion of the gateway if the sin length is zero. Check also for s_addr of 0 to avoid the "Oh no, adding my default route failed" panic, making it possible to pxeboot machines on segments without default routes. Arguably this could be a bug in pxeboot, or in the TUNABLE code, but this makes my boxes boot. --- sys/nfsclient/nfs_vfsops.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'sys/nfsclient') diff --git a/sys/nfsclient/nfs_vfsops.c b/sys/nfsclient/nfs_vfsops.c index 04deade..f30690a 100644 --- a/sys/nfsclient/nfs_vfsops.c +++ b/sys/nfsclient/nfs_vfsops.c @@ -443,8 +443,13 @@ nfs_mountroot(struct mount *mp, struct thread *td) /* * If the gateway field is filled in, set it as the default route. + * Note that pxeboot will set a default route of 0 if the route + * is not set by the DHCP server. Check also for a value of 0 + * to avoid panicking inappropriately in that situation. */ - if (nd->mygateway.sin_len != 0) { + printf("gateway: %d bytes\n", nd->mygateway.sin_len); + if (nd->mygateway.sin_len != 0 && + nd->mygateway.sin_addr.s_addr != 0) { struct sockaddr_in mask, sin; bzero((caddr_t)&mask, sizeof(mask)); -- cgit v1.1