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Commit 18de9735 authored by Chuck Lever's avatar Chuck Lever Committed by Trond Myklebust
Browse files

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: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 2e532d68

fs/nfs/callback.c

+15 −4
Original line number Diff line number Diff line
@@ -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 @@ int nfs_callback_up(void) 
	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;

}