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NFS: Enable NFSv4 callback server to listen on AF_INET6 sockets

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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>
This commit is contained in:
Chuck Lever 2008-10-16 17:41:11 -04:00 committed by Trond Myklebust
parent 2e532d68a2
commit 18de973530
1 changed files with 15 additions and 4 deletions
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19
fs/nfs/callback.c
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@ -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;
}