diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index d6881774ea5758ed1bb9b635aaa823741c046c40..d4041a05bc19934eae12894a1802aafc7e1df3d4 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -23,10 +23,12 @@
 #include <linux/pagemap.h>
 #include <linux/init.h>
 #include <linux/string.h>
+#include <linux/smp_lock.h>
 
 #include <linux/nfs.h>
 #include <linux/nfsd_idmap.h>
 #include <linux/sunrpc/svc.h>
+#include <linux/sunrpc/svcsock.h>
 #include <linux/nfsd/nfsd.h>
 #include <linux/nfsd/cache.h>
 #include <linux/nfsd/xdr.h>
@@ -51,6 +53,7 @@ enum {
 	NFSD_Fh,
 	NFSD_Threads,
 	NFSD_Versions,
+	NFSD_Ports,
 	/*
 	 * The below MUST come last.  Otherwise we leave a hole in nfsd_files[]
 	 * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops
@@ -74,6 +77,7 @@ static ssize_t write_getfs(struct file *file, char *buf, size_t size);
 static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
 static ssize_t write_threads(struct file *file, char *buf, size_t size);
 static ssize_t write_versions(struct file *file, char *buf, size_t size);
+static ssize_t write_ports(struct file *file, char *buf, size_t size);
 #ifdef CONFIG_NFSD_V4
 static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
@@ -90,6 +94,7 @@ static ssize_t (*write_op[])(struct file *, char *, size_t) = {
 	[NFSD_Fh] = write_filehandle,
 	[NFSD_Threads] = write_threads,
 	[NFSD_Versions] = write_versions,
+	[NFSD_Ports] = write_ports,
 #ifdef CONFIG_NFSD_V4
 	[NFSD_Leasetime] = write_leasetime,
 	[NFSD_RecoveryDir] = write_recoverydir,
@@ -419,6 +424,20 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size)
 	return len;
 }
 
+static ssize_t write_ports(struct file *file, char *buf, size_t size)
+{
+	/* for now, ignore what was written and just
+	 * return known ports
+	 * AF proto address port
+	 */
+	int len = 0;
+	lock_kernel();
+	if (nfsd_serv)
+		len = svc_sock_names(buf, nfsd_serv);
+	unlock_kernel();
+	return len;
+}
+
 #ifdef CONFIG_NFSD_V4
 extern time_t nfs4_leasetime(void);
 
@@ -482,6 +501,7 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
 		[NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
 		[NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
 		[NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
+		[NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
 #ifdef CONFIG_NFSD_V4
 		[NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
 		[NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h
index b4acb3d37c3f2556e2b5f01efe587c94c6b8cced..3caf92d72a81207ee39f0cd0be82a0e619368c9f 100644
--- a/include/linux/sunrpc/svcsock.h
+++ b/include/linux/sunrpc/svcsock.h
@@ -61,5 +61,6 @@ int		svc_recv(struct svc_serv *, struct svc_rqst *, long);
 int		svc_send(struct svc_rqst *);
 void		svc_drop(struct svc_rqst *);
 void		svc_sock_update_bufs(struct svc_serv *serv);
+int		svc_sock_names(char *buf, struct svc_serv *serv);
 
 #endif /* SUNRPC_SVCSOCK_H */
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 5b0fe1b66a23d5fbed578179268bedc15eae52c2..3ee4b78742b12e1f2780632ecdce9b2c09b47984 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -428,6 +428,46 @@ svc_sendto(struct svc_rqst *rqstp, struct xdr_buf *xdr)
 	return len;
 }
 
+/*
+ * Report socket names for nfsdfs
+ */
+static int one_sock_name(char *buf, struct svc_sock *svsk)
+{
+	int len;
+
+	switch(svsk->sk_sk->sk_family) {
+	case AF_INET:
+		len = sprintf(buf, "ipv4 %s %u.%u.%u.%u %d\n",
+			      svsk->sk_sk->sk_protocol==IPPROTO_UDP?
+			      "udp" : "tcp",
+			      NIPQUAD(inet_sk(svsk->sk_sk)->rcv_saddr),
+			      inet_sk(svsk->sk_sk)->num);
+		break;
+	default:
+		len = sprintf(buf, "*unknown-%d*\n",
+			       svsk->sk_sk->sk_family);
+	}
+	return len;
+}
+
+int
+svc_sock_names(char *buf, struct svc_serv *serv)
+{
+	struct svc_sock *svsk;
+	int len = 0;
+
+	if (!serv)
+		return 0;
+	spin_lock(&serv->sv_lock);
+	list_for_each_entry(svsk, &serv->sv_permsocks, sk_list) {
+		int onelen = one_sock_name(buf+len, svsk);
+		len += onelen;
+	}
+	spin_unlock(&serv->sv_lock);
+	return len;
+}
+EXPORT_SYMBOL(svc_sock_names);
+
 /*
  * Check input queue length
  */