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authorChuck Lever <chuck.lever@oracle.com>2008-10-16 17:41:11 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2008-10-17 13:06:41 -0400
commit18de9735300756e3ca9c361ef58409d8561dfe0d (patch)
tree5222cb1952b6de6d3b36576384026a7c2f4c0395
parent2e532d68a2b3e2aa6b19731501222069735c741c (diff)
NFS: Enable NFSv4 callback server to listen on AF_INET6 sockets
Allow the NFS callback server to listen for requests via an AF_INET6 or AF_INET socket when IPv6 support is present in the kernel. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
-rw-r--r--fs/nfs/callback.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 6a09760c596..c2e9cfd9e5a 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -40,6 +40,16 @@ unsigned short nfs_callback_tcpport;
static const int nfs_set_port_min = 0;
static const int nfs_set_port_max = 65535;
+/*
+ * If the kernel has IPv6 support available, always listen for
+ * both AF_INET and AF_INET6 requests.
+ */
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static const sa_family_t nfs_callback_family = AF_INET6;
+#else
+static const sa_family_t nfs_callback_family = AF_INET;
+#endif
+
static int param_set_port(const char *val, struct kernel_param *kp)
{
char *endp;
@@ -106,7 +116,7 @@ int nfs_callback_up(void)
if (nfs_callback_info.users++ || nfs_callback_info.task != NULL)
goto out;
serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE,
- AF_INET, NULL);
+ nfs_callback_family, NULL);
ret = -ENOMEM;
if (!serv)
goto out_err;
@@ -116,7 +126,8 @@ int nfs_callback_up(void)
if (ret <= 0)
goto out_err;
nfs_callback_tcpport = ret;
- dprintk("Callback port = 0x%x\n", nfs_callback_tcpport);
+ dprintk("NFS: Callback listener port = %u (af %u)\n",
+ nfs_callback_tcpport, nfs_callback_family);
nfs_callback_info.rqst = svc_prepare_thread(serv, &serv->sv_pools[0]);
if (IS_ERR(nfs_callback_info.rqst)) {
@@ -149,8 +160,8 @@ out:
mutex_unlock(&nfs_callback_mutex);
return ret;
out_err:
- dprintk("Couldn't create callback socket or server thread; err = %d\n",
- ret);
+ dprintk("NFS: Couldn't create callback socket or server thread; "
+ "err = %d\n", ret);
nfs_callback_info.users--;
goto out;
}