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| author | Chuck Lever <chuck.lever@oracle.com> | 2009-03-18 20:48:06 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-03-28 16:02:43 -0400 |
| commit | f738f5170367b367e38b2d75a413e7b3c52d46a5 (patch) | |
| tree | 3552d487e54e8c555e4f7083194d46b6eb95fc66 /fs/nfs/callback.c | |
| parent | eb16e907781a9da7f272a3e8284c26bc4e4aeb9d (diff) | |
| download | lwn-f738f5170367b367e38b2d75a413e7b3c52d46a5.tar.gz lwn-f738f5170367b367e38b2d75a413e7b3c52d46a5.zip | |
NFS: Start PF_INET6 callback listener only if IPv6 support is available
Apparently a lot of people need to disable IPv6 completely on their
distributor-built systems, which have CONFIG_IPV6_MODULE enabled at
build time.
They do this by blacklisting the ipv6.ko module. This causes the
creation of the NFSv4 callback service listener to fail if
CONFIG_IPV6_MODULE is set, but the module cannot be loaded.
Now that the kernel's PF_INET6 RPC listeners are completely separate
from PF_INET listeners, we can always start PF_INET. Then the NFS
client can try to start a PF_INET6 listener, but it isn't required
to be available.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/callback.c')
| -rw-r--r-- | fs/nfs/callback.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 0ef47dff89be..a886e692ddd0 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -38,6 +38,7 @@ static struct svc_program nfs4_callback_program; unsigned int nfs_callback_set_tcpport; unsigned short nfs_callback_tcpport; +unsigned short nfs_callback_tcpport6; static const int nfs_set_port_min = 0; static const int nfs_set_port_max = 65535; @@ -119,6 +120,17 @@ int nfs_callback_up(void) dprintk("NFS: Callback listener port = %u (af %u)\n", nfs_callback_tcpport, PF_INET); +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + ret = svc_create_xprt(serv, "tcp", PF_INET6, + nfs_callback_set_tcpport, SVC_SOCK_ANONYMOUS); + if (ret > 0) { + nfs_callback_tcpport6 = ret; + dprintk("NFS: Callback listener port = %u (af %u)\n", + nfs_callback_tcpport6, PF_INET6); + } else if (ret != -EAFNOSUPPORT) + goto out_err; +#endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */ + nfs_callback_info.rqst = svc_prepare_thread(serv, &serv->sv_pools[0]); if (IS_ERR(nfs_callback_info.rqst)) { ret = PTR_ERR(nfs_callback_info.rqst); |