diff options
| author | brooks <brooks@FreeBSD.org> | 2006-08-09 01:56:17 +0000 |
|---|---|---|
| committer | brooks <brooks@FreeBSD.org> | 2006-08-09 01:56:17 +0000 |
| commit | f9c7fb948da6c96f9d9bcb34d0a36e10f80939c7 (patch) | |
| tree | 64803d207eb90a11175a90d549f5ad720925546c /sys/nfsclient/nfs_vfsops.c | |
| parent | f29929e962e9d900221a2007f70388b425cd6b9c (diff) | |
| download | FreeBSD-src-f9c7fb948da6c96f9d9bcb34d0a36e10f80939c7.zip FreeBSD-src-f9c7fb948da6c96f9d9bcb34d0a36e10f80939c7.tar.gz | |
Add a new kernel environment variable "boot.netif.mtu" which is used to
set the MTU prior to mounting root via NFS. This is required if the
server supports a higher than default MTU because the client will not
see the responses otherwise.
MFC after: 3 weeks
Diffstat (limited to 'sys/nfsclient/nfs_vfsops.c')
| -rw-r--r-- | sys/nfsclient/nfs_vfsops.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/nfsclient/nfs_vfsops.c b/sys/nfsclient/nfs_vfsops.c index bd9adc2..6a29da8 100644 --- a/sys/nfsclient/nfs_vfsops.c +++ b/sys/nfsclient/nfs_vfsops.c @@ -397,9 +397,11 @@ nfs_mountroot(struct mount *mp, struct thread *td) struct nfsv3_diskless *nd = &nfsv3_diskless; struct socket *so; struct vnode *vp; + struct ifreq ir; int error, i; u_long l; char buf[128]; + char *cp; NET_ASSERT_GIANT(); @@ -448,6 +450,14 @@ nfs_mountroot(struct mount *mp, struct thread *td) error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td); if (error) panic("nfs_mountroot: SIOCAIFADDR: %d", error); + if ((cp = getenv("boot.netif.mtu")) != NULL) { + ir.ifr_mtu = strtol(cp, NULL, 10); + bcopy(nd->myif.ifra_name, ir.ifr_name, IFNAMSIZ); + freeenv(cp); + error = ifioctl(so, SIOCSIFMTU, (caddr_t)&ir, td); + if (error) + printf("nfs_mountroot: SIOCSIFMTU: %d", error); + } soclose(so); /* |
