[PATCH 000 of 14] knfsd: Preparation for IPv6 support in NFS server.

[PATCH 000 of 14] knfsd: Preparation for IPv6 support in NFS server.

[NeilBrown]

Hi Andrew,
 could you please remove

knfsd-sunrpc-update-internal-api-separate-pmap-register-and-temp-sockets.patch
knfsd-sunrpc-allow-creating-an-rpc-service-without-registering-with-portmapper.patch
knfsd-sunrpc-cache-remote-peers-address-in-svc_sock.patch
knfsd-sunrpc-use-sockaddr_storage-to-store-address-in-svc_deferred_req.patch
knfsd-sunrpc-add-a-function-to-format-the-address-in-an-svc_rqst-for-printing.patch

 and 

#knfsd-sunrpc-provide-room-in-svc_rqst-for-larger-addresses.patch
#knfsd-sunrpc-make-rq_daddr-field-address-version-independent.patch
#knfsd-sunrpc-teach-svc_sendto-to-deal-with-ipv6-addresses.patch
#knfsd-sunrpc-add-a-generic-function-to-see-if-the-peer-uses-a-secure-port.patch
#knfsd-sunrpc-support-ipv6-addresses-in-svc_tcp_accept.patch
#knfsd-sunrpc-support-ipv6-addresses-in-rpc-servers-udp-receive-path.patch
#knfsd-sunrpc-fix-up-svc_create_socket-to-take-a-sockaddr-struct-length.patch

and include the following 14 patches instead?
They are mostly from Chuck Level and make preparating for IPv6 support
in the NFS server.
They are *not* for 2.6.20, but should be ok for .21.

Thanks,
NeilBrown


 [PATCH 001 of 14] knfsd: SUNRPC: update internal API: separate pmap register and temp sockets
 [PATCH 002 of 14] knfsd: SUNRPC: allow creating an RPC service without registering with portmapper
 [PATCH 003 of 14] knfsd: SUNRPC: aplit svc_sock_enqueue out of svc_setup_socket.
 [PATCH 004 of 14] knfsd: SUNRPC: Cache remote peer's address in svc_sock.
 [PATCH 005 of 14] knfsd: SUNRPC: Don't set msg_name and msg_namelen when calling sock_recvmsg
 [PATCH 006 of 14] knfsd: SUNRPC: Add a function to format the address in an svc_rqst for printing
 [PATCH 007 of 14] knfsd: SUNRPC: Use sockaddr_storage to store address in svc_deferred_req
 [PATCH 008 of 14] knfsd: SUNRPC: Provide room in svc_rqst for larger addresses
 [PATCH 009 of 14] knfsd: SUNRPC: Make rq_daddr field address-version independent
 [PATCH 010 of 14] knfsd: SUNRPC: teach svc_sendto() to deal with IPv6 addresses
 [PATCH 011 of 14] knfsd: SUNRPC: add a "generic" function to see if the peer uses a secure port.
 [PATCH 012 of 14] knfsd: SUNRPC: Support IPv6 addresses in svc_tcp_accept
 [PATCH 013 of 14] knfsd: SUNRPC: support IPv6 addresses in RPC server's UDP receive path.
 [PATCH 014 of 14] knfsd: SUNRPC: fix up svc_create_socket() to take a sockaddr struct + length

[PATCH 001 of 14] knfsd: SUNRPC: update internal API: separate pmap register and temp sockets

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
Currently in the RPC server, registering with the local portmapper and
creating "permanent" sockets are tied together.  Expand the internal APIs
to allow these two socket characteristics to be separately specified.

This will be externalized in the next patch.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./include/linux/sunrpc/svcsock.h |    7 +++++
 ./net/sunrpc/svcsock.c           |   47 ++++++++++++++++++++++-----------------
 2 files changed, 34 insertions(+), 20 deletions(-)

diff .prev/include/linux/sunrpc/svcsock.h ./include/linux/sunrpc/svcsock.h
--- .prev/include/linux/sunrpc/svcsock.h	2007-02-02 14:32:25.000000000 +1100
+++ ./include/linux/sunrpc/svcsock.h	2007-02-02 14:39:07.000000000 +1100
@@ -74,4 +74,11 @@ int		svc_addsock(struct svc_serv *serv,
 			    char *name_return,
 			    int *proto);
 
+/*
+ * svc_makesock socket characteristics
+ */
+#define SVC_SOCK_DEFAULTS	(0U)
+#define SVC_SOCK_ANONYMOUS	(1U << 0)	/* don't register with pmap */
+#define SVC_SOCK_TEMPORARY	(1U << 1)	/* flag socket as temporary */
+
 #endif /* SUNRPC_SVCSOCK_H */

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 14:32:25.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 14:39:07.000000000 +1100
@@ -69,7 +69,7 @@
 
 
 static struct svc_sock *svc_setup_socket(struct svc_serv *, struct socket *,
-					 int *errp, int pmap_reg);
+					 int *, int);
 static void		svc_udp_data_ready(struct sock *, int);
 static int		svc_udp_recvfrom(struct svc_rqst *);
 static int		svc_udp_sendto(struct svc_rqst *);
@@ -922,7 +922,8 @@ svc_tcp_accept(struct svc_sock *svsk)
 	 */
 	newsock->sk->sk_sndtimeo = HZ*30;
 
-	if (!(newsvsk = svc_setup_socket(serv, newsock, &err, 0)))
+	if (!(newsvsk = svc_setup_socket(serv, newsock, &err,
+				 (SVC_SOCK_ANONYMOUS | SVC_SOCK_TEMPORARY))))
 		goto failed;
 
 
@@ -1462,12 +1463,14 @@ svc_age_temp_sockets(unsigned long closu
  * Initialize socket for RPC use and create svc_sock struct
  * XXX: May want to setsockopt SO_SNDBUF and SO_RCVBUF.
  */
-static struct svc_sock *
-svc_setup_socket(struct svc_serv *serv, struct socket *sock,
-					int *errp, int pmap_register)
+static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
+						struct socket *sock,
+						int *errp, int flags)
 {
 	struct svc_sock	*svsk;
 	struct sock	*inet;
+	int		pmap_register = !(flags & SVC_SOCK_ANONYMOUS);
+	int		is_temporary = flags & SVC_SOCK_TEMPORARY;
 
 	dprintk("svc: svc_setup_socket %p\n", sock);
 	if (!(svsk = kzalloc(sizeof(*svsk), GFP_KERNEL))) {
@@ -1509,7 +1512,7 @@ svc_setup_socket(struct svc_serv *serv, 
 		svc_tcp_init(svsk);
 
 	spin_lock_bh(&serv->sv_lock);
-	if (!pmap_register) {
+	if (is_temporary) {
 		set_bit(SK_TEMP, &svsk->sk_flags);
 		list_add(&svsk->sk_list, &serv->sv_tempsocks);
 		serv->sv_tmpcnt++;
@@ -1553,7 +1556,7 @@ int svc_addsock(struct svc_serv *serv,
 	else if (so->state > SS_UNCONNECTED)
 		err = -EISCONN;
 	else {
-		svsk = svc_setup_socket(serv, so, &err, 1);
+		svsk = svc_setup_socket(serv, so, &err, SVC_SOCK_DEFAULTS);
 		if (svsk)
 			err = 0;
 	}
@@ -1569,8 +1572,8 @@ EXPORT_SYMBOL_GPL(svc_addsock);
 /*
  * Create socket for RPC service.
  */
-static int
-svc_create_socket(struct svc_serv *serv, int protocol, struct sockaddr_in *sin)
+static int svc_create_socket(struct svc_serv *serv, int protocol,
+				struct sockaddr_in *sin, int flags)
 {
 	struct svc_sock	*svsk;
 	struct socket	*sock;
@@ -1606,8 +1609,8 @@ svc_create_socket(struct svc_serv *serv,
 			goto bummer;
 	}
 
-	if ((svsk = svc_setup_socket(serv, sock, &error, 1)) != NULL)
-		return 0;
+	if ((svsk = svc_setup_socket(serv, sock, &error, flags)) != NULL)
+		return ntohs(inet_sk(svsk->sk_sk)->sport);
 
 bummer:
 	dprintk("svc: svc_create_socket error = %d\n", -error);
@@ -1657,19 +1660,23 @@ svc_delete_socket(struct svc_sock *svsk)
 	svc_sock_put(svsk);
 }
 
-/*
- * Make a socket for nfsd and lockd
+/**
+ * svc_makesock - Make a socket for nfsd and lockd
+ * @serv: RPC server structure
+ * @protocol: transport protocol to use
+ * @port: port to use
+ *
  */
-int
-svc_makesock(struct svc_serv *serv, int protocol, unsigned short port)
+int svc_makesock(struct svc_serv *serv, int protocol, unsigned short port)
 {
-	struct sockaddr_in	sin;
+	struct sockaddr_in sin = {
+		.sin_family		= AF_INET,
+		.sin_addr.s_addr	= INADDR_ANY,
+		.sin_port		= htons(port),
+	};
 
 	dprintk("svc: creating socket proto = %d\n", protocol);
-	sin.sin_family      = AF_INET;
-	sin.sin_addr.s_addr = INADDR_ANY;
-	sin.sin_port        = htons(port);
-	return svc_create_socket(serv, protocol, &sin);
+	return svc_create_socket(serv, protocol, &sin, SVC_SOCK_DEFAULTS);
 }
 
 /*

[PATCH 002 of 14] knfsd: SUNRPC: allow creating an RPC service without registering with portmapper

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
Sometimes we need to create an RPC service but not register it with the
local portmapper.  NFSv4 delegation callback, for example.

Change the svc_makesock() API to allow optionally creating temporary or
permanent sockets, optionally registering with the local portmapper, and
make it return the ephemeral port of the new socket.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./fs/lockd/svc.c                 |   26 ++++++++++++++++----------
 ./fs/nfs/callback.c              |   20 +++++++++-----------
 ./fs/nfsd/nfssvc.c               |    6 ++++--
 ./include/linux/sunrpc/svcsock.h |    2 +-
 ./net/sunrpc/svcsock.c           |    6 ++++--
 5 files changed, 34 insertions(+), 26 deletions(-)

diff .prev/fs/lockd/svc.c ./fs/lockd/svc.c
--- .prev/fs/lockd/svc.c	2007-02-02 14:31:52.000000000 +1100
+++ ./fs/lockd/svc.c	2007-02-02 14:40:41.000000000 +1100
@@ -223,23 +223,29 @@ static int find_socket(struct svc_serv *
 	return found;
 }
 
+/*
+ * Make any sockets that are needed but not present.
+ * If nlm_udpport or nlm_tcpport were set as module
+ * options, make those sockets unconditionally
+ */
 static int make_socks(struct svc_serv *serv, int proto)
 {
-	/* Make any sockets that are needed but not present.
-	 * If nlm_udpport or nlm_tcpport were set as module
-	 * options, make those sockets unconditionally
-	 */
-	static int		warned;
+	static int warned;
 	int err = 0;
+
 	if (proto == IPPROTO_UDP || nlm_udpport)
 		if (!find_socket(serv, IPPROTO_UDP))
-			err = svc_makesock(serv, IPPROTO_UDP, nlm_udpport);
-	if (err == 0 && (proto == IPPROTO_TCP || nlm_tcpport))
+			err = svc_makesock(serv, IPPROTO_UDP, nlm_udpport,
+						SVC_SOCK_DEFAULTS);
+	if (err >= 0 && (proto == IPPROTO_TCP || nlm_tcpport))
 		if (!find_socket(serv, IPPROTO_TCP))
-			err= svc_makesock(serv, IPPROTO_TCP, nlm_tcpport);
-	if (!err)
+			err = svc_makesock(serv, IPPROTO_TCP, nlm_tcpport,
+						SVC_SOCK_DEFAULTS);
+
+	if (err >= 0) {
 		warned = 0;
-	else if (warned++ == 0)
+		err = 0;
+	} else if (warned++ == 0)
 		printk(KERN_WARNING
 		       "lockd_up: makesock failed, error=%d\n", err);
 	return err;

diff .prev/fs/nfs/callback.c ./fs/nfs/callback.c
--- .prev/fs/nfs/callback.c	2007-02-02 14:31:52.000000000 +1100
+++ ./fs/nfs/callback.c	2007-02-02 14:40:41.000000000 +1100
@@ -106,7 +106,6 @@ static void nfs_callback_svc(struct svc_
 int nfs_callback_up(void)
 {
 	struct svc_serv *serv;
-	struct svc_sock *svsk;
 	int ret = 0;
 
 	lock_kernel();
@@ -119,17 +118,14 @@ int nfs_callback_up(void)
 	ret = -ENOMEM;
 	if (!serv)
 		goto out_err;
-	/* FIXME: We don't want to register this socket with the portmapper */
-	ret = svc_makesock(serv, IPPROTO_TCP, nfs_callback_set_tcpport);
-	if (ret < 0)
+
+	ret = svc_makesock(serv, IPPROTO_TCP, nfs_callback_set_tcpport,
+							SVC_SOCK_ANONYMOUS);
+	if (ret <= 0)
 		goto out_destroy;
-	if (!list_empty(&serv->sv_permsocks)) {
-		svsk = list_entry(serv->sv_permsocks.next,
-				struct svc_sock, sk_list);
-		nfs_callback_tcpport = ntohs(inet_sk(svsk->sk_sk)->sport);
-		dprintk ("Callback port = 0x%x\n", nfs_callback_tcpport);
-	} else
-		BUG();
+	nfs_callback_tcpport = ret;
+	dprintk("Callback port = 0x%x\n", nfs_callback_tcpport);
+
 	ret = svc_create_thread(nfs_callback_svc, serv);
 	if (ret < 0)
 		goto out_destroy;
@@ -140,6 +136,8 @@ out:
 	unlock_kernel();
 	return ret;
 out_destroy:
+	dprintk("Couldn't create callback socket or server thread; err = %d\n",
+		ret);
 	svc_destroy(serv);
 out_err:
 	nfs_callback_info.users--;

diff .prev/fs/nfsd/nfssvc.c ./fs/nfsd/nfssvc.c
--- .prev/fs/nfsd/nfssvc.c	2007-02-02 14:31:52.000000000 +1100
+++ ./fs/nfsd/nfssvc.c	2007-02-02 14:40:41.000000000 +1100
@@ -235,7 +235,8 @@ static int nfsd_init_socks(int port)
 
 	error = lockd_up(IPPROTO_UDP);
 	if (error >= 0) {
-		error = svc_makesock(nfsd_serv, IPPROTO_UDP, port);
+		error = svc_makesock(nfsd_serv, IPPROTO_UDP, port,
+					SVC_SOCK_DEFAULTS);
 		if (error < 0)
 			lockd_down();
 	}
@@ -245,7 +246,8 @@ static int nfsd_init_socks(int port)
 #ifdef CONFIG_NFSD_TCP
 	error = lockd_up(IPPROTO_TCP);
 	if (error >= 0) {
-		error = svc_makesock(nfsd_serv, IPPROTO_TCP, port);
+		error = svc_makesock(nfsd_serv, IPPROTO_TCP, port,
+					SVC_SOCK_DEFAULTS);
 		if (error < 0)
 			lockd_down();
 	}

diff .prev/include/linux/sunrpc/svcsock.h ./include/linux/sunrpc/svcsock.h
--- .prev/include/linux/sunrpc/svcsock.h	2007-02-02 14:39:07.000000000 +1100
+++ ./include/linux/sunrpc/svcsock.h	2007-02-02 14:40:41.000000000 +1100
@@ -62,7 +62,7 @@ struct svc_sock {
 /*
  * Function prototypes.
  */
-int		svc_makesock(struct svc_serv *, int, unsigned short);
+int		svc_makesock(struct svc_serv *, int, unsigned short, int flags);
 void		svc_delete_socket(struct svc_sock *);
 int		svc_recv(struct svc_rqst *, long);
 int		svc_send(struct svc_rqst *);

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 14:39:07.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 14:40:41.000000000 +1100
@@ -1665,9 +1665,11 @@ svc_delete_socket(struct svc_sock *svsk)
  * @serv: RPC server structure
  * @protocol: transport protocol to use
  * @port: port to use
+ * @flags: requested socket characteristics
  *
  */
-int svc_makesock(struct svc_serv *serv, int protocol, unsigned short port)
+int svc_makesock(struct svc_serv *serv, int protocol, unsigned short port,
+			int flags)
 {
 	struct sockaddr_in sin = {
 		.sin_family		= AF_INET,
@@ -1676,7 +1678,7 @@ int svc_makesock(struct svc_serv *serv, 
 	};
 
 	dprintk("svc: creating socket proto = %d\n", protocol);
-	return svc_create_socket(serv, protocol, &sin, SVC_SOCK_DEFAULTS);
+	return svc_create_socket(serv, protocol, &sin, flags);
 }
 
 /*

[PATCH 003 of 14] knfsd: SUNRPC: aplit svc_sock_enqueue out of svc_setup_socket.

[NeilBrown]

Rather than calling svc_sock_enqueue at the end of svc_setup_socket,
we now call it (via svc_sock_recieved) after calling svc_setup_socket
at each call site.

We do this because a subsequent patch will insert some code between
the two calls at one call site.

Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./net/sunrpc/svcsock.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:15:11.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:18:37.000000000 +1100
@@ -925,7 +925,7 @@ svc_tcp_accept(struct svc_sock *svsk)
 	if (!(newsvsk = svc_setup_socket(serv, newsock, &err,
 				 (SVC_SOCK_ANONYMOUS | SVC_SOCK_TEMPORARY))))
 		goto failed;
-
+	svc_sock_received(newsvsk);
 
 	/* make sure that we don't have too many active connections.
 	 * If we have, something must be dropped.
@@ -1532,8 +1532,6 @@ static struct svc_sock *svc_setup_socket
 	dprintk("svc: svc_setup_socket created %p (inet %p)\n",
 				svsk, svsk->sk_sk);
 
-	clear_bit(SK_BUSY, &svsk->sk_flags);
-	svc_sock_enqueue(svsk);
 	return svsk;
 }
 
@@ -1557,8 +1555,10 @@ int svc_addsock(struct svc_serv *serv,
 		err = -EISCONN;
 	else {
 		svsk = svc_setup_socket(serv, so, &err, SVC_SOCK_DEFAULTS);
-		if (svsk)
+		if (svsk) {
+			svc_sock_received(svsk);
 			err = 0;
+		}
 	}
 	if (err) {
 		sockfd_put(so);
@@ -1609,8 +1609,10 @@ static int svc_create_socket(struct svc_
 			goto bummer;
 	}
 
-	if ((svsk = svc_setup_socket(serv, sock, &error, flags)) != NULL)
+	if ((svsk = svc_setup_socket(serv, sock, &error, flags)) != NULL) {
+		svc_sock_received(svsk);
 		return ntohs(inet_sk(svsk->sk_sk)->sport);
+	}
 
 bummer:
 	dprintk("svc: svc_create_socket error = %d\n", -error);

[PATCH 004 of 14] knfsd: SUNRPC: Cache remote peer's address in svc_sock.

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
The remote peer's address won't change after the socket has been
accepted.  We don't need to call ->getname on every incoming request.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./include/linux/sunrpc/svcsock.h |    3 +++
 ./net/sunrpc/svcsock.c           |   14 ++++++++------
 2 files changed, 11 insertions(+), 6 deletions(-)

diff .prev/include/linux/sunrpc/svcsock.h ./include/linux/sunrpc/svcsock.h
--- .prev/include/linux/sunrpc/svcsock.h	2007-02-02 15:17:11.000000000 +1100
+++ ./include/linux/sunrpc/svcsock.h	2007-02-02 15:21:28.000000000 +1100
@@ -57,6 +57,9 @@ struct svc_sock {
 
 	/* cache of various info for TCP sockets */
 	void			*sk_info_authunix;
+
+	struct sockaddr_storage	sk_remote;	/* remote peer's address */
+	int			sk_remotelen;	/* length of address */
 };
 
 /*

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:18:37.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:21:55.000000000 +1100
@@ -560,12 +560,13 @@ svc_recv_available(struct svc_sock *svsk
 static int
 svc_recvfrom(struct svc_rqst *rqstp, struct kvec *iov, int nr, int buflen)
 {
+	struct svc_sock *svsk = rqstp->rq_sock;
 	struct msghdr	msg;
 	struct socket	*sock;
-	int		len, alen;
+	int		len;
 
 	rqstp->rq_addrlen = sizeof(rqstp->rq_addr);
-	sock = rqstp->rq_sock->sk_sock;
+	sock = svsk->sk_sock;
 
 	msg.msg_name    = &rqstp->rq_addr;
 	msg.msg_namelen = sizeof(rqstp->rq_addr);
@@ -577,11 +578,9 @@ svc_recvfrom(struct svc_rqst *rqstp, str
 	len = kernel_recvmsg(sock, &msg, iov, nr, buflen, MSG_DONTWAIT);
 
 	/* sock_recvmsg doesn't fill in the name/namelen, so we must..
-	 * possibly we should cache this in the svc_sock structure
-	 * at accept time. FIXME
 	 */
-	alen = sizeof(rqstp->rq_addr);
-	kernel_getpeername(sock, (struct sockaddr *)&rqstp->rq_addr, &alen);
+	memcpy(&rqstp->rq_addr, &svsk->sk_remote, svsk->sk_remotelen);
+	rqstp->rq_addrlen = svsk->sk_remotelen;
 
 	dprintk("svc: socket %p recvfrom(%p, %Zu) = %d\n",
 		rqstp->rq_sock, iov[0].iov_base, iov[0].iov_len, len);
@@ -925,6 +924,9 @@ svc_tcp_accept(struct svc_sock *svsk)
 	if (!(newsvsk = svc_setup_socket(serv, newsock, &err,
 				 (SVC_SOCK_ANONYMOUS | SVC_SOCK_TEMPORARY))))
 		goto failed;
+	memcpy(&newsvsk->sk_remote, &sin, slen);
+	newsvsk->sk_remotelen = slen;
+
 	svc_sock_received(newsvsk);
 
 	/* make sure that we don't have too many active connections.

[PATCH 005 of 14] knfsd: SUNRPC: Don't set msg_name and msg_namelen when calling sock_recvmsg

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
Clean-up: msg_name and msg_namelen are not used by sock_recvmsg, so
don't bother to set them in svc_recvfrom.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./net/sunrpc/svcsock.c |   22 +++++++---------------
 1 file changed, 7 insertions(+), 15 deletions(-)

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:21:55.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:22.000000000 +1100
@@ -561,21 +561,13 @@ static int
 svc_recvfrom(struct svc_rqst *rqstp, struct kvec *iov, int nr, int buflen)
 {
 	struct svc_sock *svsk = rqstp->rq_sock;
-	struct msghdr	msg;
-	struct socket	*sock;
-	int		len;
-
-	rqstp->rq_addrlen = sizeof(rqstp->rq_addr);
-	sock = svsk->sk_sock;
-
-	msg.msg_name    = &rqstp->rq_addr;
-	msg.msg_namelen = sizeof(rqstp->rq_addr);
-	msg.msg_control = NULL;
-	msg.msg_controllen = 0;
-
-	msg.msg_flags	= MSG_DONTWAIT;
+	struct msghdr msg = {
+		.msg_flags	= MSG_DONTWAIT,
+	};
+	int len;
 
-	len = kernel_recvmsg(sock, &msg, iov, nr, buflen, MSG_DONTWAIT);
+	len = kernel_recvmsg(svsk->sk_sock, &msg, iov, nr, buflen,
+				msg.msg_flags);
 
 	/* sock_recvmsg doesn't fill in the name/namelen, so we must..
 	 */
@@ -583,7 +575,7 @@ svc_recvfrom(struct svc_rqst *rqstp, str
 	rqstp->rq_addrlen = svsk->sk_remotelen;
 
 	dprintk("svc: socket %p recvfrom(%p, %Zu) = %d\n",
-		rqstp->rq_sock, iov[0].iov_base, iov[0].iov_len, len);
+		svsk, iov[0].iov_base, iov[0].iov_len, len);
 
 	return len;
 }

[PATCH 006 of 14] knfsd: SUNRPC: Add a function to format the address in an svc_rqst for printing

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
There are loads of places where the RPC server assumes that the rq_addr
fields contains an IPv4 address.  Top among these are error and debugging
messages that display the server's IP address.

Let's refactor the address printing into a separate function that's smart
enough to figure out the difference between IPv4 and IPv6 addresses.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./fs/lockd/svc.c             |    6 +--
 ./fs/lockd/svc4proc.c        |    7 +--
 ./fs/lockd/svcproc.c         |    7 +--
 ./fs/nfs/callback.c          |   12 ++++--
 ./fs/nfsd/nfsfh.c            |    7 ++-
 ./fs/nfsd/nfsproc.c          |    7 ++-
 ./include/linux/sunrpc/svc.h |    3 +
 ./net/sunrpc/svcsock.c       |   80 +++++++++++++++++++++++++++++++------------
 8 files changed, 88 insertions(+), 41 deletions(-)

diff .prev/fs/lockd/svc4proc.c ./fs/lockd/svc4proc.c
--- .prev/fs/lockd/svc4proc.c	2007-02-02 15:15:10.000000000 +1100
+++ ./fs/lockd/svc4proc.c	2007-02-02 15:22:31.000000000 +1100
@@ -426,10 +426,9 @@ nlm4svc_proc_sm_notify(struct svc_rqst *
 	dprintk("lockd: SM_NOTIFY     called\n");
 	if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
 	 || ntohs(saddr.sin_port) >= 1024) {
-		printk(KERN_WARNING
-			"lockd: rejected NSM callback from %08x:%d\n",
-			ntohl(rqstp->rq_addr.sin_addr.s_addr),
-			ntohs(rqstp->rq_addr.sin_port));
+		char buf[RPC_MAX_ADDRBUFLEN];
+		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
+				svc_print_addr(rqstp, buf, sizeof(buf)));
 		return rpc_system_err;
 	}
 

diff .prev/fs/lockd/svc.c ./fs/lockd/svc.c
--- .prev/fs/lockd/svc.c	2007-02-02 15:15:10.000000000 +1100
+++ ./fs/lockd/svc.c	2007-02-02 15:22:31.000000000 +1100
@@ -141,6 +141,7 @@ lockd(struct svc_rqst *rqstp)
 	 */
 	while ((nlmsvc_users || !signalled()) && nlmsvc_pid == current->pid) {
 		long timeout = MAX_SCHEDULE_TIMEOUT;
+		char buf[RPC_MAX_ADDRBUFLEN];
 
 		if (signalled()) {
 			flush_signals(current);
@@ -175,11 +176,10 @@ lockd(struct svc_rqst *rqstp)
 			break;
 		}
 
-		dprintk("lockd: request from %08x\n",
-			(unsigned)ntohl(rqstp->rq_addr.sin_addr.s_addr));
+		dprintk("lockd: request from %s\n",
+				svc_print_addr(rqstp, buf, sizeof(buf)));
 
 		svc_process(rqstp);
-
 	}
 
 	flush_signals(current);

diff .prev/fs/lockd/svcproc.c ./fs/lockd/svcproc.c
--- .prev/fs/lockd/svcproc.c	2007-02-02 15:15:10.000000000 +1100
+++ ./fs/lockd/svcproc.c	2007-02-02 15:22:31.000000000 +1100
@@ -457,10 +457,9 @@ nlmsvc_proc_sm_notify(struct svc_rqst *r
 	dprintk("lockd: SM_NOTIFY     called\n");
 	if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
 	 || ntohs(saddr.sin_port) >= 1024) {
-		printk(KERN_WARNING
-			"lockd: rejected NSM callback from %08x:%d\n",
-			ntohl(rqstp->rq_addr.sin_addr.s_addr),
-			ntohs(rqstp->rq_addr.sin_port));
+		char buf[RPC_MAX_ADDRBUFLEN];
+		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
+				svc_print_addr(rqstp, buf, sizeof(buf)));
 		return rpc_system_err;
 	}
 

diff .prev/fs/nfs/callback.c ./fs/nfs/callback.c
--- .prev/fs/nfs/callback.c	2007-02-02 15:15:10.000000000 +1100
+++ ./fs/nfs/callback.c	2007-02-02 15:22:31.000000000 +1100
@@ -71,6 +71,8 @@ static void nfs_callback_svc(struct svc_
 	complete(&nfs_callback_info.started);
 
 	for(;;) {
+		char buf[RPC_MAX_ADDRBUFLEN];
+
 		if (signalled()) {
 			if (nfs_callback_info.users == 0)
 				break;
@@ -88,8 +90,8 @@ static void nfs_callback_svc(struct svc_
 					__FUNCTION__, -err);
 			break;
 		}
-		dprintk("%s: request from %u.%u.%u.%u\n", __FUNCTION__,
-				NIPQUAD(rqstp->rq_addr.sin_addr.s_addr));
+		dprintk("%s: request from %s\n", __FUNCTION__,
+				svc_print_addr(rqstp, buf, sizeof(buf)));
 		svc_process(rqstp);
 	}
 
@@ -166,13 +168,17 @@ static int nfs_callback_authenticate(str
 {
 	struct sockaddr_in *addr = &rqstp->rq_addr;
 	struct nfs_client *clp;
+	char buf[RPC_MAX_ADDRBUFLEN];
 
 	/* Don't talk to strangers */
 	clp = nfs_find_client(addr, 4);
 	if (clp == NULL)
 		return SVC_DROP;
-	dprintk("%s: %u.%u.%u.%u NFSv4 callback!\n", __FUNCTION__, NIPQUAD(addr->sin_addr));
+
+	dprintk("%s: %s NFSv4 callback!\n", __FUNCTION__,
+			svc_print_addr(rqstp, buf, sizeof(buf)));
 	nfs_put_client(clp);
+
 	switch (rqstp->rq_authop->flavour) {
 		case RPC_AUTH_NULL:
 			if (rqstp->rq_proc != CB_NULL)

diff .prev/fs/nfsd/nfsfh.c ./fs/nfsd/nfsfh.c
--- .prev/fs/nfsd/nfsfh.c	2007-02-02 15:15:10.000000000 +1100
+++ ./fs/nfsd/nfsfh.c	2007-02-02 15:22:31.000000000 +1100
@@ -19,6 +19,7 @@
 #include <linux/mount.h>
 #include <asm/pgtable.h>
 
+#include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/svc.h>
 #include <linux/nfsd/nfsd.h>
 
@@ -179,10 +180,10 @@ fh_verify(struct svc_rqst *rqstp, struct
 		/* Check if the request originated from a secure port. */
 		error = nfserr_perm;
 		if (!rqstp->rq_secure && EX_SECURE(exp)) {
+			char buf[RPC_MAX_ADDRBUFLEN];
 			printk(KERN_WARNING
-			       "nfsd: request from insecure port (%u.%u.%u.%u:%d)!\n",
-			       NIPQUAD(rqstp->rq_addr.sin_addr.s_addr),
-			       ntohs(rqstp->rq_addr.sin_port));
+			       "nfsd: request from insecure port %s!\n",
+			       svc_print_addr(rqstp, buf, sizeof(buf)));
 			goto out;
 		}
 

diff .prev/fs/nfsd/nfsproc.c ./fs/nfsd/nfsproc.c
--- .prev/fs/nfsd/nfsproc.c	2007-02-02 15:15:10.000000000 +1100
+++ ./fs/nfsd/nfsproc.c	2007-02-02 15:22:31.000000000 +1100
@@ -19,6 +19,7 @@
 #include <linux/unistd.h>
 #include <linux/slab.h>
 
+#include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/svc.h>
 #include <linux/nfsd/nfsd.h>
 #include <linux/nfsd/cache.h>
@@ -147,10 +148,10 @@ nfsd_proc_read(struct svc_rqst *rqstp, s
 	 */
 
 	if (NFSSVC_MAXBLKSIZE_V2 < argp->count) {
+		char buf[RPC_MAX_ADDRBUFLEN];
 		printk(KERN_NOTICE
-			"oversized read request from %u.%u.%u.%u:%d (%d bytes)\n",
-				NIPQUAD(rqstp->rq_addr.sin_addr.s_addr),
-				ntohs(rqstp->rq_addr.sin_port),
+			"oversized read request from %s (%d bytes)\n",
+				svc_print_addr(rqstp, buf, sizeof(buf)),
 				argp->count);
 		argp->count = NFSSVC_MAXBLKSIZE_V2;
 	}

diff .prev/include/linux/sunrpc/svc.h ./include/linux/sunrpc/svc.h
--- .prev/include/linux/sunrpc/svc.h	2007-02-02 15:15:10.000000000 +1100
+++ ./include/linux/sunrpc/svc.h	2007-02-02 15:22:31.000000000 +1100
@@ -368,5 +368,8 @@ int		   svc_register(struct svc_serv *, 
 void		   svc_wake_up(struct svc_serv *);
 void		   svc_reserve(struct svc_rqst *rqstp, int space);
 struct svc_pool *  svc_pool_for_cpu(struct svc_serv *serv, int cpu);
+char *		   svc_print_addr(struct svc_rqst *, char *, size_t);
+
+#define	RPC_MAX_ADDRBUFLEN	(63U)
 
 #endif /* SUNRPC_SVC_H */

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:22:22.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:31.000000000 +1100
@@ -41,6 +41,7 @@
 #include <asm/ioctls.h>
 
 #include <linux/sunrpc/types.h>
+#include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/xdr.h>
 #include <linux/sunrpc/svcsock.h>
 #include <linux/sunrpc/stats.h>
@@ -114,6 +115,41 @@ static inline void svc_reclassify_socket
 }
 #endif
 
+static char *__svc_print_addr(struct sockaddr *addr, char *buf, size_t len)
+{
+	switch (addr->sa_family) {
+	case AF_INET:
+		snprintf(buf, len, "%u.%u.%u.%u, port=%u",
+			NIPQUAD(((struct sockaddr_in *) addr)->sin_addr),
+			htons(((struct sockaddr_in *) addr)->sin_port));
+		break;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+	case AF_INET6:
+		snprintf(buf, len, "%x:%x:%x:%x:%x:%x:%x:%x, port=%u",
+			NIP6(((struct sockaddr_in6 *) addr)->sin6_addr),
+			htons(((struct sockaddr_in6 *) addr)->sin6_port));
+		break;
+#endif
+	default:
+		snprintf(buf, len, "unknown address type: %d", addr->sa_family);
+		break;
+	}
+	return buf;
+}
+
+/**
+ * svc_print_addr - Format rq_addr field for printing
+ * @rqstp: svc_rqst struct containing address to print
+ * @buf: target buffer for formatted address
+ * @len: length of target buffer
+ *
+ */
+char *svc_print_addr(struct svc_rqst *rqstp, char *buf, size_t len)
+{
+	return __svc_print_addr((struct sockaddr *) &rqstp->rq_addr, buf, len);
+}
+EXPORT_SYMBOL_GPL(svc_print_addr);
+
 /*
  * Queue up an idle server thread.  Must have pool->sp_lock held.
  * Note: this is really a stack rather than a queue, so that we only
@@ -421,6 +457,7 @@ svc_sendto(struct svc_rqst *rqstp, struc
 	size_t		base = xdr->page_base;
 	unsigned int	pglen = xdr->page_len;
 	unsigned int	flags = MSG_MORE;
+	char		buf[RPC_MAX_ADDRBUFLEN];
 
 	slen = xdr->len;
 
@@ -483,9 +520,9 @@ svc_sendto(struct svc_rqst *rqstp, struc
 			len += result;
 	}
 out:
-	dprintk("svc: socket %p sendto([%p %Zu... ], %d) = %d (addr %x)\n",
-			rqstp->rq_sock, xdr->head[0].iov_base, xdr->head[0].iov_len, xdr->len, len,
-		rqstp->rq_addr.sin_addr.s_addr);
+	dprintk("svc: socket %p sendto([%p %Zu... ], %d) = %d (addr %s)\n",
+		rqstp->rq_sock, xdr->head[0].iov_base, xdr->head[0].iov_len,
+		xdr->len, len, svc_print_addr(rqstp, buf, sizeof(buf)));
 
 	return len;
 }
@@ -865,6 +902,7 @@ svc_tcp_accept(struct svc_sock *svsk)
 	struct socket	*newsock;
 	struct svc_sock	*newsvsk;
 	int		err, slen;
+	char		buf[RPC_MAX_ADDRBUFLEN];
 
 	dprintk("svc: tcp_accept %p sock %p\n", svsk, sock);
 	if (!sock)
@@ -895,18 +933,19 @@ svc_tcp_accept(struct svc_sock *svsk)
 	}
 
 	/* Ideally, we would want to reject connections from unauthorized
-	 * hosts here, but when we get encription, the IP of the host won't
-	 * tell us anything. For now just warn about unpriv connections.
+	 * hosts here, but when we get encryption, the IP of the host won't
+	 * tell us anything.  For now just warn about unpriv connections.
 	 */
 	if (ntohs(sin.sin_port) >= 1024) {
 		dprintk(KERN_WARNING
-			"%s: connect from unprivileged port: %u.%u.%u.%u:%d\n",
-			serv->sv_name, 
-			NIPQUAD(sin.sin_addr.s_addr), ntohs(sin.sin_port));
-	}
-
-	dprintk("%s: connect from %u.%u.%u.%u:%04x\n", serv->sv_name,
-			NIPQUAD(sin.sin_addr.s_addr), ntohs(sin.sin_port));
+			"%s: connect from unprivileged port: %s\n",
+			serv->sv_name,
+			__svc_print_addr((struct sockaddr *) &sin, buf,
+								sizeof(buf)));
+	}
+	dprintk("%s: connect from %s\n", serv->sv_name,
+		__svc_print_addr((struct sockaddr *) &sin, buf,
+				 sizeof(buf)));
 
 	/* make sure that a write doesn't block forever when
 	 * low on memory
@@ -942,11 +981,9 @@ svc_tcp_accept(struct svc_sock *svsk)
 					"sockets, consider increasing the "
 					"number of nfsd threads\n",
 						   serv->sv_name);
-				printk(KERN_NOTICE "%s: last TCP connect from "
-					"%u.%u.%u.%u:%d\n",
-					serv->sv_name,
-					NIPQUAD(sin.sin_addr.s_addr),
-					ntohs(sin.sin_port));
+				printk(KERN_NOTICE
+				       "%s: last TCP connect from %s\n",
+				       serv->sv_name, buf);
 			}
 			/*
 			 * Always select the oldest socket. It's not fair,
@@ -1573,11 +1610,12 @@ static int svc_create_socket(struct svc_
 	struct socket	*sock;
 	int		error;
 	int		type;
+	char		buf[RPC_MAX_ADDRBUFLEN];
 
-	dprintk("svc: svc_create_socket(%s, %d, %u.%u.%u.%u:%d)\n",
-				serv->sv_program->pg_name, protocol,
-				NIPQUAD(sin->sin_addr.s_addr),
-				ntohs(sin->sin_port));
+	dprintk("svc: svc_create_socket(%s, %d, %s)\n",
+			serv->sv_program->pg_name, protocol,
+			__svc_print_addr((struct sockaddr *) sin, buf,
+								sizeof(buf)));
 
 	if (protocol != IPPROTO_UDP && protocol != IPPROTO_TCP) {
 		printk(KERN_WARNING "svc: only UDP and TCP "

[PATCH 007 of 14] knfsd: SUNRPC: Use sockaddr_storage to store address in svc_deferred_req

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
Sockaddr_storage will allow us to store arbitrary socket addresses in
the svc_deferred_req struct.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./include/linux/sunrpc/svc.h |    5 +++--
 ./net/sunrpc/svcsock.c       |    6 ++++--
 2 files changed, 7 insertions(+), 4 deletions(-)

diff .prev/include/linux/sunrpc/svc.h ./include/linux/sunrpc/svc.h
--- .prev/include/linux/sunrpc/svc.h	2007-02-02 15:22:31.000000000 +1100
+++ ./include/linux/sunrpc/svc.h	2007-02-02 15:22:31.000000000 +1100
@@ -292,8 +292,9 @@ static inline void svc_free_res_pages(st
 
 struct svc_deferred_req {
 	u32			prot;	/* protocol (UDP or TCP) */
-	struct sockaddr_in	addr;
-	struct svc_sock		*svsk;	/* where reply must go */
+	struct svc_sock		*svsk;
+	struct sockaddr_storage	addr;	/* where reply must go */
+	size_t			addrlen;
 	__be32			daddr;	/* where reply must come from */
 	struct cache_deferred_req handle;
 	int			argslen;

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:22:31.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:31.000000000 +1100
@@ -1761,7 +1761,8 @@ svc_defer(struct cache_req *req)
 
 		dr->handle.owner = rqstp->rq_server;
 		dr->prot = rqstp->rq_prot;
-		dr->addr = rqstp->rq_addr;
+		memcpy(&dr->addr, &rqstp->rq_addr, rqstp->rq_addrlen);
+		dr->addrlen = rqstp->rq_addrlen;
 		dr->daddr = rqstp->rq_daddr;
 		dr->argslen = rqstp->rq_arg.len >> 2;
 		memcpy(dr->args, rqstp->rq_arg.head[0].iov_base-skip, dr->argslen<<2);
@@ -1785,7 +1786,8 @@ static int svc_deferred_recv(struct svc_
 	rqstp->rq_arg.page_len = 0;
 	rqstp->rq_arg.len = dr->argslen<<2;
 	rqstp->rq_prot        = dr->prot;
-	rqstp->rq_addr        = dr->addr;
+	memcpy(&rqstp->rq_addr, &dr->addr, dr->addrlen);
+	rqstp->rq_addrlen     = dr->addrlen;
 	rqstp->rq_daddr       = dr->daddr;
 	rqstp->rq_respages    = rqstp->rq_pages;
 	return dr->argslen<<2;

[PATCH 008 of 14] knfsd: SUNRPC: Provide room in svc_rqst for larger addresses

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
Expand the rq_addr field to allow it to contain larger addresses.

Specifically, we replace a 'sockaddr_in' with a 'sockaddr_storage',
then everywhere the 'sockaddr_in' was referenced, we use instead 
an accessor function (svc_addr_in) which safely casts the _storage
to _in.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./fs/lockd/host.c            |    2 +-
 ./fs/lockd/svc4proc.c        |    6 ++++--
 ./fs/lockd/svcproc.c         |    6 ++++--
 ./fs/nfs/callback.c          |    2 +-
 ./fs/nfs/callback_xdr.c      |    4 ++--
 ./fs/nfsd/nfs4state.c        |   18 +++++++++---------
 ./fs/nfsd/nfscache.c         |    2 +-
 ./include/linux/sunrpc/svc.h |   17 +++++++++++++++--
 ./net/sunrpc/svcauth_unix.c  |    3 ++-
 ./net/sunrpc/svcsock.c       |   19 ++++++++++++-------
 10 files changed, 51 insertions(+), 28 deletions(-)

diff .prev/fs/lockd/host.c ./fs/lockd/host.c
--- .prev/fs/lockd/host.c	2007-02-02 15:15:10.000000000 +1100
+++ ./fs/lockd/host.c	2007-02-02 15:22:32.000000000 +1100
@@ -191,7 +191,7 @@ struct nlm_host *
 nlmsvc_lookup_host(struct svc_rqst *rqstp,
 			const char *hostname, int hostname_len)
 {
-	return nlm_lookup_host(1, &rqstp->rq_addr,
+	return nlm_lookup_host(1, svc_addr_in(rqstp),
 			       rqstp->rq_prot, rqstp->rq_vers,
 			       hostname, hostname_len);
 }

diff .prev/fs/lockd/svc4proc.c ./fs/lockd/svc4proc.c
--- .prev/fs/lockd/svc4proc.c	2007-02-02 15:22:31.000000000 +1100
+++ ./fs/lockd/svc4proc.c	2007-02-02 15:22:32.000000000 +1100
@@ -224,7 +224,7 @@ nlm4svc_proc_granted(struct svc_rqst *rq
 	resp->cookie = argp->cookie;
 
 	dprintk("lockd: GRANTED       called\n");
-	resp->status = nlmclnt_grant(&rqstp->rq_addr, &argp->lock);
+	resp->status = nlmclnt_grant(svc_addr_in(rqstp), &argp->lock);
 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
 	return rpc_success;
 }
@@ -421,7 +421,9 @@ static __be32
 nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
 					      void	        *resp)
 {
-	struct sockaddr_in	saddr = rqstp->rq_addr;
+	struct sockaddr_in	saddr;
+
+	memcpy(&saddr, svc_addr_in(rqstp), sizeof(saddr));
 
 	dprintk("lockd: SM_NOTIFY     called\n");
 	if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)

diff .prev/fs/lockd/svcproc.c ./fs/lockd/svcproc.c
--- .prev/fs/lockd/svcproc.c	2007-02-02 15:22:31.000000000 +1100
+++ ./fs/lockd/svcproc.c	2007-02-02 15:22:32.000000000 +1100
@@ -253,7 +253,7 @@ nlmsvc_proc_granted(struct svc_rqst *rqs
 	resp->cookie = argp->cookie;
 
 	dprintk("lockd: GRANTED       called\n");
-	resp->status = nlmclnt_grant(&rqstp->rq_addr, &argp->lock);
+	resp->status = nlmclnt_grant(svc_addr_in(rqstp), &argp->lock);
 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
 	return rpc_success;
 }
@@ -452,7 +452,9 @@ static __be32
 nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
 					      void	        *resp)
 {
-	struct sockaddr_in	saddr = rqstp->rq_addr;
+	struct sockaddr_in	saddr;
+
+	memcpy(&saddr, svc_addr_in(rqstp), sizeof(saddr));
 
 	dprintk("lockd: SM_NOTIFY     called\n");
 	if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)

diff .prev/fs/nfs/callback.c ./fs/nfs/callback.c
--- .prev/fs/nfs/callback.c	2007-02-02 15:22:31.000000000 +1100
+++ ./fs/nfs/callback.c	2007-02-02 15:22:32.000000000 +1100
@@ -166,7 +166,7 @@ void nfs_callback_down(void)
 
 static int nfs_callback_authenticate(struct svc_rqst *rqstp)
 {
-	struct sockaddr_in *addr = &rqstp->rq_addr;
+	struct sockaddr_in *addr = svc_addr_in(rqstp);
 	struct nfs_client *clp;
 	char buf[RPC_MAX_ADDRBUFLEN];
 

diff .prev/fs/nfs/callback_xdr.c ./fs/nfs/callback_xdr.c
--- .prev/fs/nfs/callback_xdr.c	2007-02-02 15:15:10.000000000 +1100
+++ ./fs/nfs/callback_xdr.c	2007-02-02 15:22:32.000000000 +1100
@@ -176,7 +176,7 @@ static __be32 decode_getattr_args(struct
 	status = decode_fh(xdr, &args->fh);
 	if (unlikely(status != 0))
 		goto out;
-	args->addr = &rqstp->rq_addr;
+	args->addr = svc_addr_in(rqstp);
 	status = decode_bitmap(xdr, args->bitmap);
 out:
 	dprintk("%s: exit with status = %d\n", __FUNCTION__, status);
@@ -188,7 +188,7 @@ static __be32 decode_recall_args(struct 
 	__be32 *p;
 	__be32 status;
 
-	args->addr = &rqstp->rq_addr;
+	args->addr = svc_addr_in(rqstp);
 	status = decode_stateid(xdr, &args->stateid);
 	if (unlikely(status != 0))
 		goto out;

diff .prev/fs/nfsd/nfs4state.c ./fs/nfsd/nfs4state.c
--- .prev/fs/nfsd/nfs4state.c	2007-02-02 15:15:10.000000000 +1100
+++ ./fs/nfsd/nfs4state.c	2007-02-02 15:22:32.000000000 +1100
@@ -714,7 +714,7 @@ __be32
 nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		  struct nfsd4_setclientid *setclid)
 {
-	__be32 			ip_addr = rqstp->rq_addr.sin_addr.s_addr;
+	struct sockaddr_in	*sin = svc_addr_in(rqstp);
 	struct xdr_netobj 	clname = { 
 		.len = setclid->se_namelen,
 		.data = setclid->se_name,
@@ -749,7 +749,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp
 		 */
 		status = nfserr_clid_inuse;
 		if (!cmp_creds(&conf->cl_cred, &rqstp->rq_cred)
-				|| conf->cl_addr != ip_addr) {
+				|| conf->cl_addr != sin->sin_addr.s_addr) {
 			printk("NFSD: setclientid: string in use by client"
 			"(clientid %08x/%08x)\n",
 			conf->cl_clientid.cl_boot, conf->cl_clientid.cl_id);
@@ -769,7 +769,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp
 		if (new == NULL)
 			goto out;
 		copy_verf(new, &clverifier);
-		new->cl_addr = ip_addr;
+		new->cl_addr = sin->sin_addr.s_addr;
 		copy_cred(&new->cl_cred,&rqstp->rq_cred);
 		gen_clid(new);
 		gen_confirm(new);
@@ -801,7 +801,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp
 		if (new == NULL)
 			goto out;
 		copy_verf(new,&conf->cl_verifier);
-		new->cl_addr = ip_addr;
+		new->cl_addr = sin->sin_addr.s_addr;
 		copy_cred(&new->cl_cred,&rqstp->rq_cred);
 		copy_clid(new, conf);
 		gen_confirm(new);
@@ -820,7 +820,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp
 		if (new == NULL)
 			goto out;
 		copy_verf(new,&clverifier);
-		new->cl_addr = ip_addr;
+		new->cl_addr = sin->sin_addr.s_addr;
 		copy_cred(&new->cl_cred,&rqstp->rq_cred);
 		gen_clid(new);
 		gen_confirm(new);
@@ -847,7 +847,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp
 		if (new == NULL)
 			goto out;
 		copy_verf(new,&clverifier);
-		new->cl_addr = ip_addr;
+		new->cl_addr = sin->sin_addr.s_addr;
 		copy_cred(&new->cl_cred,&rqstp->rq_cred);
 		gen_clid(new);
 		gen_confirm(new);
@@ -881,7 +881,7 @@ nfsd4_setclientid_confirm(struct svc_rqs
 			 struct nfsd4_compound_state *cstate,
 			 struct nfsd4_setclientid_confirm *setclientid_confirm)
 {
-	__be32 ip_addr = rqstp->rq_addr.sin_addr.s_addr;
+	struct sockaddr_in *sin = svc_addr_in(rqstp);
 	struct nfs4_client *conf, *unconf;
 	nfs4_verifier confirm = setclientid_confirm->sc_confirm; 
 	clientid_t * clid = &setclientid_confirm->sc_clientid;
@@ -900,9 +900,9 @@ nfsd4_setclientid_confirm(struct svc_rqs
 	unconf = find_unconfirmed_client(clid);
 
 	status = nfserr_clid_inuse;
-	if (conf && conf->cl_addr != ip_addr)
+	if (conf && conf->cl_addr != sin->sin_addr.s_addr)
 		goto out;
-	if (unconf && unconf->cl_addr != ip_addr)
+	if (unconf && unconf->cl_addr != sin->sin_addr.s_addr)
 		goto out;
 
 	if ((conf && unconf) && 

diff .prev/fs/nfsd/nfscache.c ./fs/nfsd/nfscache.c
--- .prev/fs/nfsd/nfscache.c	2007-02-02 15:15:10.000000000 +1100
+++ ./fs/nfsd/nfscache.c	2007-02-02 15:22:32.000000000 +1100
@@ -185,7 +185,7 @@ nfsd_cache_lookup(struct svc_rqst *rqstp
 	rp->c_state = RC_INPROG;
 	rp->c_xid = xid;
 	rp->c_proc = proc;
-	rp->c_addr = rqstp->rq_addr;
+	memcpy(&rp->c_addr, svc_addr_in(rqstp), sizeof(rp->c_addr));
 	rp->c_prot = proto;
 	rp->c_vers = vers;
 	rp->c_timestamp = jiffies;

diff .prev/include/linux/sunrpc/svc.h ./include/linux/sunrpc/svc.h
--- .prev/include/linux/sunrpc/svc.h	2007-02-02 15:22:31.000000000 +1100
+++ ./include/linux/sunrpc/svc.h	2007-02-02 15:22:32.000000000 +1100
@@ -200,8 +200,8 @@ struct svc_rqst {
 	struct list_head	rq_list;	/* idle list */
 	struct list_head	rq_all;		/* all threads list */
 	struct svc_sock *	rq_sock;	/* socket */
-	struct sockaddr_in	rq_addr;	/* peer address */
-	int			rq_addrlen;
+	struct sockaddr_storage	rq_addr;	/* peer address */
+	size_t			rq_addrlen;
 
 	struct svc_serv *	rq_server;	/* RPC service definition */
 	struct svc_pool *	rq_pool;	/* thread pool */
@@ -256,6 +256,19 @@ struct svc_rqst {
 };
 
 /*
+ * Rigorous type checking on sockaddr type conversions
+ */
+static inline struct sockaddr_in *svc_addr_in(struct svc_rqst *rqst)
+{
+	return (struct sockaddr_in *) &rqst->rq_addr;
+}
+
+static inline struct sockaddr *svc_addr(struct svc_rqst *rqst)
+{
+	return (struct sockaddr *) &rqst->rq_addr;
+}
+
+/*
  * Check buffer bounds after decoding arguments
  */
 static inline int

diff .prev/net/sunrpc/svcauth_unix.c ./net/sunrpc/svcauth_unix.c
--- .prev/net/sunrpc/svcauth_unix.c	2007-02-02 15:15:10.000000000 +1100
+++ ./net/sunrpc/svcauth_unix.c	2007-02-02 15:22:32.000000000 +1100
@@ -421,6 +421,7 @@ svcauth_unix_info_release(void *info)
 static int
 svcauth_unix_set_client(struct svc_rqst *rqstp)
 {
+	struct sockaddr_in *sin = svc_addr_in(rqstp);
 	struct ip_map *ipm;
 
 	rqstp->rq_client = NULL;
@@ -430,7 +431,7 @@ svcauth_unix_set_client(struct svc_rqst 
 	ipm = ip_map_cached_get(rqstp);
 	if (ipm == NULL)
 		ipm = ip_map_lookup(rqstp->rq_server->sv_program->pg_class,
-				    rqstp->rq_addr.sin_addr);
+				    sin->sin_addr);
 
 	if (ipm == NULL)
 		return SVC_DENIED;

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:22:31.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:32.000000000 +1100
@@ -146,7 +146,7 @@ static char *__svc_print_addr(struct soc
  */
 char *svc_print_addr(struct svc_rqst *rqstp, char *buf, size_t len)
 {
-	return __svc_print_addr((struct sockaddr *) &rqstp->rq_addr, buf, len);
+	return __svc_print_addr(svc_addr(rqstp), buf, len);
 }
 EXPORT_SYMBOL_GPL(svc_print_addr);
 
@@ -465,7 +465,7 @@ svc_sendto(struct svc_rqst *rqstp, struc
 		/* set the source and destination */
 		struct msghdr	msg;
 		msg.msg_name    = &rqstp->rq_addr;
-		msg.msg_namelen = sizeof(rqstp->rq_addr);
+		msg.msg_namelen = rqstp->rq_addrlen;
 		msg.msg_iov     = NULL;
 		msg.msg_iovlen  = 0;
 		msg.msg_flags	= MSG_MORE;
@@ -688,6 +688,7 @@ svc_write_space(struct sock *sk)
 static int
 svc_udp_recvfrom(struct svc_rqst *rqstp)
 {
+	struct sockaddr_in *sin = svc_addr_in(rqstp);
 	struct svc_sock	*svsk = rqstp->rq_sock;
 	struct svc_serv	*serv = svsk->sk_server;
 	struct sk_buff	*skb;
@@ -743,9 +744,12 @@ svc_udp_recvfrom(struct svc_rqst *rqstp)
 	rqstp->rq_prot        = IPPROTO_UDP;
 
 	/* Get sender address */
-	rqstp->rq_addr.sin_family = AF_INET;
-	rqstp->rq_addr.sin_port = skb->h.uh->source;
-	rqstp->rq_addr.sin_addr.s_addr = skb->nh.iph->saddr;
+	sin->sin_family = AF_INET;
+	sin->sin_port = skb->h.uh->source;
+	sin->sin_addr.s_addr = skb->nh.iph->saddr;
+	rqstp->rq_addrlen = sizeof(struct sockaddr_in);
+
+	/* Remember which interface received this request */
 	rqstp->rq_daddr = skb->nh.iph->daddr;
 
 	if (skb_is_nonlinear(skb)) {
@@ -1284,7 +1288,8 @@ svc_sock_update_bufs(struct svc_serv *se
 int
 svc_recv(struct svc_rqst *rqstp, long timeout)
 {
-	struct svc_sock		*svsk =NULL;
+	struct svc_sock		*svsk = NULL;
+	struct sockaddr_in	*sin = svc_addr_in(rqstp);
 	struct svc_serv		*serv = rqstp->rq_server;
 	struct svc_pool		*pool = rqstp->rq_pool;
 	int			len, i;
@@ -1381,7 +1386,7 @@ svc_recv(struct svc_rqst *rqstp, long ti
 	svsk->sk_lastrecv = get_seconds();
 	clear_bit(SK_OLD, &svsk->sk_flags);
 
-	rqstp->rq_secure  = ntohs(rqstp->rq_addr.sin_port) < 1024;
+	rqstp->rq_secure = ntohs(sin->sin_port) < PROT_SOCK;
 	rqstp->rq_chandle.defer = svc_defer;
 
 	if (serv->sv_stats)

[PATCH 009 of 14] knfsd: SUNRPC: Make rq_daddr field address-version independent

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
The rq_daddr field must support larger addresses.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./include/linux/sunrpc/svc.h |   15 +++++++++++----
 ./net/sunrpc/svcsock.c       |    4 ++--
 2 files changed, 13 insertions(+), 6 deletions(-)

diff .prev/include/linux/sunrpc/svc.h ./include/linux/sunrpc/svc.h
--- .prev/include/linux/sunrpc/svc.h	2007-02-02 15:22:32.000000000 +1100
+++ ./include/linux/sunrpc/svc.h	2007-02-02 15:22:32.000000000 +1100
@@ -11,6 +11,7 @@
 #define SUNRPC_SVC_H
 
 #include <linux/in.h>
+#include <linux/in6.h>
 #include <linux/sunrpc/types.h>
 #include <linux/sunrpc/xdr.h>
 #include <linux/sunrpc/auth.h>
@@ -191,7 +192,13 @@ static inline void svc_putu32(struct kve
 	iov->iov_len += sizeof(__be32);
 }
 
-	
+union svc_addr_u {
+    struct in_addr	addr;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+    struct in6_addr	addr6;
+#endif
+};
+
 /*
  * The context of a single thread, including the request currently being
  * processed.
@@ -227,8 +234,8 @@ struct svc_rqst {
 	unsigned short
 				rq_secure  : 1;	/* secure port */
 
-
-	__be32			rq_daddr;	/* dest addr of request - reply from here */
+	union svc_addr_u	rq_daddr;	/* dest addr of request
+						 *  - reply from here */
 
 	void *			rq_argp;	/* decoded arguments */
 	void *			rq_resp;	/* xdr'd results */
@@ -308,7 +315,7 @@ struct svc_deferred_req {
 	struct svc_sock		*svsk;
 	struct sockaddr_storage	addr;	/* where reply must go */
 	size_t			addrlen;
-	__be32			daddr;	/* where reply must come from */
+	union svc_addr_u	daddr;	/* where reply must come from */
 	struct cache_deferred_req handle;
 	int			argslen;
 	__be32			args[0];

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:22:32.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:32.000000000 +1100
@@ -476,7 +476,7 @@ svc_sendto(struct svc_rqst *rqstp, struc
 		cmh->cmsg_level = SOL_IP;
 		cmh->cmsg_type = IP_PKTINFO;
 		pki->ipi_ifindex = 0;
-		pki->ipi_spec_dst.s_addr = rqstp->rq_daddr;
+		pki->ipi_spec_dst.s_addr = rqstp->rq_daddr.addr.s_addr;
 
 		if (sock_sendmsg(sock, &msg, 0) < 0)
 			goto out;
@@ -750,7 +750,7 @@ svc_udp_recvfrom(struct svc_rqst *rqstp)
 	rqstp->rq_addrlen = sizeof(struct sockaddr_in);
 
 	/* Remember which interface received this request */
-	rqstp->rq_daddr = skb->nh.iph->daddr;
+	rqstp->rq_daddr.addr.s_addr = skb->nh.iph->daddr;
 
 	if (skb_is_nonlinear(skb)) {
 		/* we have to copy */

[PATCH 010 of 14] knfsd: SUNRPC: teach svc_sendto() to deal with IPv6 addresses

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
CMSG_DATA comes in different sizes, depending on address family.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./net/sunrpc/svcsock.c |   67 ++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 50 insertions(+), 17 deletions(-)

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:22:32.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:32.000000000 +1100
@@ -36,6 +36,7 @@
 #include <net/sock.h>
 #include <net/checksum.h>
 #include <net/ip.h>
+#include <net/ipv6.h>
 #include <net/tcp_states.h>
 #include <asm/uaccess.h>
 #include <asm/ioctls.h>
@@ -438,6 +439,45 @@ svc_wake_up(struct svc_serv *serv)
 	}
 }
 
+union svc_pktinfo_u {
+	struct in_pktinfo pkti;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+	struct in6_pktinfo pkti6;
+#endif
+};
+
+static void svc_set_cmsg_data(struct svc_rqst *rqstp, struct cmsghdr *cmh)
+{
+	switch (rqstp->rq_sock->sk_sk->sk_family) {
+	case AF_INET:
+		do {
+			struct in_pktinfo *pki = CMSG_DATA(cmh);
+
+			cmh->cmsg_level = SOL_IP;
+			cmh->cmsg_type = IP_PKTINFO;
+			pki->ipi_ifindex = 0;
+			pki->ipi_spec_dst.s_addr = rqstp->rq_daddr.addr.s_addr;
+			cmh->cmsg_len = CMSG_LEN(sizeof(*pki));
+		} while (0);
+		break;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+	case AF_INET6:
+		do {
+			struct in6_pktinfo *pki = CMSG_DATA(cmh);
+
+			cmh->cmsg_level = SOL_IPV6;
+			cmh->cmsg_type = IPV6_PKTINFO;
+			pki->ipi6_ifindex = 0;
+			ipv6_addr_copy(&pki->ipi6_addr,
+					&rqstp->rq_daddr.addr6);
+			cmh->cmsg_len = CMSG_LEN(sizeof(*pki));
+		} while (0);
+		break;
+#endif
+	}
+	return;
+}
+
 /*
  * Generic sendto routine
  */
@@ -447,9 +487,8 @@ svc_sendto(struct svc_rqst *rqstp, struc
 	struct svc_sock	*svsk = rqstp->rq_sock;
 	struct socket	*sock = svsk->sk_sock;
 	int		slen;
-	char 		buffer[CMSG_SPACE(sizeof(struct in_pktinfo))];
+	char 		buffer[CMSG_SPACE(sizeof(union svc_pktinfo_u))];
 	struct cmsghdr *cmh = (struct cmsghdr *)buffer;
-	struct in_pktinfo *pki = (struct in_pktinfo *)CMSG_DATA(cmh);
 	int		len = 0;
 	int		result;
 	int		size;
@@ -462,21 +501,15 @@ svc_sendto(struct svc_rqst *rqstp, struc
 	slen = xdr->len;
 
 	if (rqstp->rq_prot == IPPROTO_UDP) {
-		/* set the source and destination */
-		struct msghdr	msg;
-		msg.msg_name    = &rqstp->rq_addr;
-		msg.msg_namelen = rqstp->rq_addrlen;
-		msg.msg_iov     = NULL;
-		msg.msg_iovlen  = 0;
-		msg.msg_flags	= MSG_MORE;
-
-		msg.msg_control = cmh;
-		msg.msg_controllen = sizeof(buffer);
-		cmh->cmsg_len = CMSG_LEN(sizeof(*pki));
-		cmh->cmsg_level = SOL_IP;
-		cmh->cmsg_type = IP_PKTINFO;
-		pki->ipi_ifindex = 0;
-		pki->ipi_spec_dst.s_addr = rqstp->rq_daddr.addr.s_addr;
+		struct msghdr msg = {
+			.msg_name	= &rqstp->rq_addr,
+			.msg_namelen	= rqstp->rq_addrlen,
+			.msg_control	= cmh,
+			.msg_controllen	= sizeof(buffer),
+			.msg_flags	= MSG_MORE,
+		};
+
+		svc_set_cmsg_data(rqstp, cmh);
 
 		if (sock_sendmsg(sock, &msg, 0) < 0)
 			goto out;

[PATCH 011 of 14] knfsd: SUNRPC: add a "generic" function to see if the peer uses a secure port.

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
The only reason svcsock.c looks at a sockaddr's port is to check whether
the remote peer is connecting from a privileged port.  Refactor this check
to hide processing that is specific to address format.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./net/sunrpc/svcsock.c |   21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:22:32.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:33.000000000 +1100
@@ -927,6 +927,22 @@ svc_tcp_data_ready(struct sock *sk, int 
 		wake_up_interruptible(sk->sk_sleep);
 }
 
+static inline int svc_port_is_privileged(struct sockaddr *sin)
+{
+	switch (sin->sa_family) {
+	case AF_INET:
+		return ntohs(((struct sockaddr_in *)sin)->sin_port)
+			< PROT_SOCK;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+	case AF_INET6:
+		return ntohs(((struct sockaddr_in6 *)sin)->sin6_port)
+			< PROT_SOCK;
+#endif
+	default:
+		return 0;
+	}
+}
+
 /*
  * Accept a TCP connection
  */
@@ -973,7 +989,7 @@ svc_tcp_accept(struct svc_sock *svsk)
 	 * hosts here, but when we get encryption, the IP of the host won't
 	 * tell us anything.  For now just warn about unpriv connections.
 	 */
-	if (ntohs(sin.sin_port) >= 1024) {
+	if (!svc_port_is_privileged((struct sockaddr *) &sin)) {
 		dprintk(KERN_WARNING
 			"%s: connect from unprivileged port: %s\n",
 			serv->sv_name,
@@ -1322,7 +1338,6 @@ int
 svc_recv(struct svc_rqst *rqstp, long timeout)
 {
 	struct svc_sock		*svsk = NULL;
-	struct sockaddr_in	*sin = svc_addr_in(rqstp);
 	struct svc_serv		*serv = rqstp->rq_server;
 	struct svc_pool		*pool = rqstp->rq_pool;
 	int			len, i;
@@ -1419,7 +1434,7 @@ svc_recv(struct svc_rqst *rqstp, long ti
 	svsk->sk_lastrecv = get_seconds();
 	clear_bit(SK_OLD, &svsk->sk_flags);
 
-	rqstp->rq_secure = ntohs(sin->sin_port) < PROT_SOCK;
+	rqstp->rq_secure = svc_port_is_privileged(svc_addr(rqstp));
 	rqstp->rq_chandle.defer = svc_defer;
 
 	if (serv->sv_stats)

[PATCH 012 of 14] knfsd: SUNRPC: Support IPv6 addresses in svc_tcp_accept

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
Modify svc_tcp_accept to support connecting on IPv6 sockets.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./net/sunrpc/svcsock.c |   13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:22:33.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:40.000000000 +1100
@@ -949,7 +949,8 @@ static inline int svc_port_is_privileged
 static void
 svc_tcp_accept(struct svc_sock *svsk)
 {
-	struct sockaddr_in sin;
+	struct sockaddr_storage addr;
+	struct sockaddr	*sin = (struct sockaddr *) &addr;
 	struct svc_serv	*serv = svsk->sk_server;
 	struct socket	*sock = svsk->sk_sock;
 	struct socket	*newsock;
@@ -976,8 +977,7 @@ svc_tcp_accept(struct svc_sock *svsk)
 	set_bit(SK_CONN, &svsk->sk_flags);
 	svc_sock_enqueue(svsk);
 
-	slen = sizeof(sin);
-	err = kernel_getpeername(newsock, (struct sockaddr *) &sin, &slen);
+	err = kernel_getpeername(newsock, sin, &slen);
 	if (err < 0) {
 		if (net_ratelimit())
 			printk(KERN_WARNING "%s: peername failed (err %d)!\n",
@@ -989,12 +989,11 @@ svc_tcp_accept(struct svc_sock *svsk)
 	 * hosts here, but when we get encryption, the IP of the host won't
 	 * tell us anything.  For now just warn about unpriv connections.
 	 */
-	if (!svc_port_is_privileged((struct sockaddr *) &sin)) {
+	if (!svc_port_is_privileged(sin)) {
 		dprintk(KERN_WARNING
 			"%s: connect from unprivileged port: %s\n",
 			serv->sv_name,
-			__svc_print_addr((struct sockaddr *) &sin, buf,
-								sizeof(buf)));
+			__svc_print_addr(sin, buf, sizeof(buf)));
 	}
 	dprintk("%s: connect from %s\n", serv->sv_name,
 		__svc_print_addr((struct sockaddr *) &sin, buf,
@@ -1008,7 +1007,7 @@ svc_tcp_accept(struct svc_sock *svsk)
 	if (!(newsvsk = svc_setup_socket(serv, newsock, &err,
 				 (SVC_SOCK_ANONYMOUS | SVC_SOCK_TEMPORARY))))
 		goto failed;
-	memcpy(&newsvsk->sk_remote, &sin, slen);
+	memcpy(&newsvsk->sk_remote, sin, slen);
 	newsvsk->sk_remotelen = slen;
 
 	svc_sock_received(newsvsk);

[PATCH 013 of 14] knfsd: SUNRPC: support IPv6 addresses in RPC server's UDP receive path.

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>
Add support for IPv6 addresses in the RPC server's UDP receive path.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./include/linux/sunrpc/svc.h |    5 +++
 ./net/sunrpc/svcsock.c       |   55 +++++++++++++++++++++++++++++++++++--------
 2 files changed, 50 insertions(+), 10 deletions(-)

diff .prev/include/linux/sunrpc/svc.h ./include/linux/sunrpc/svc.h
--- .prev/include/linux/sunrpc/svc.h	2007-02-02 15:22:32.000000000 +1100
+++ ./include/linux/sunrpc/svc.h	2007-02-02 15:22:58.000000000 +1100
@@ -270,6 +270,11 @@ static inline struct sockaddr_in *svc_ad
 	return (struct sockaddr_in *) &rqst->rq_addr;
 }
 
+static inline struct sockaddr_in6 *svc_addr_in6(struct svc_rqst *rqst)
+{
+	return (struct sockaddr_in6 *) &rqst->rq_addr;
+}
+
 static inline struct sockaddr *svc_addr(struct svc_rqst *rqst)
 {
 	return (struct sockaddr *) &rqst->rq_addr;

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:22:40.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:58.000000000 +1100
@@ -715,13 +715,55 @@ svc_write_space(struct sock *sk)
 	}
 }
 
+static void svc_udp_get_sender_address(struct svc_rqst *rqstp,
+					struct sk_buff *skb)
+{
+	switch (rqstp->rq_sock->sk_sk->sk_family) {
+	case AF_INET:
+		/* this seems to come from net/ipv4/udp.c:udp_recvmsg */
+		do {
+			struct sockaddr_in *sin = svc_addr_in(rqstp);
+
+			sin->sin_family = AF_INET;
+			sin->sin_port = skb->h.uh->source;
+			sin->sin_addr.s_addr = skb->nh.iph->saddr;
+			rqstp->rq_addrlen = sizeof(struct sockaddr_in);
+			/* Remember which interface received this request */
+			rqstp->rq_daddr.addr.s_addr = skb->nh.iph->daddr;
+		} while (0);
+		break;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+	case AF_INET6:
+		/* this is derived from net/ipv6/udp.c:udpv6_recvmesg */
+		do {
+			struct sockaddr_in6 *sin6 = svc_addr_in6(rqstp);
+
+			sin6->sin6_family = AF_INET6;
+			sin6->sin6_port = skb->h.uh->source;
+			sin6->sin6_flowinfo = 0;
+			sin6->sin6_scope_id = 0;
+			if (ipv6_addr_type(&sin6->sin6_addr) &
+							IPV6_ADDR_LINKLOCAL)
+				sin6->sin6_scope_id = IP6CB(skb)->iif;
+			ipv6_addr_copy(&sin6->sin6_addr,
+							&skb->nh.ipv6h->saddr);
+			rqstp->rq_addrlen = sizeof(struct sockaddr_in);
+			/* Remember which interface received this request */
+			ipv6_addr_copy(&rqstp->rq_daddr.addr6,
+							&skb->nh.ipv6h->saddr);
+		} while (0);
+		break;
+#endif
+	}
+	return;
+}
+
 /*
  * Receive a datagram from a UDP socket.
  */
 static int
 svc_udp_recvfrom(struct svc_rqst *rqstp)
 {
-	struct sockaddr_in *sin = svc_addr_in(rqstp);
 	struct svc_sock	*svsk = rqstp->rq_sock;
 	struct svc_serv	*serv = svsk->sk_server;
 	struct sk_buff	*skb;
@@ -774,16 +816,9 @@ svc_udp_recvfrom(struct svc_rqst *rqstp)
 	len  = skb->len - sizeof(struct udphdr);
 	rqstp->rq_arg.len = len;
 
-	rqstp->rq_prot        = IPPROTO_UDP;
-
-	/* Get sender address */
-	sin->sin_family = AF_INET;
-	sin->sin_port = skb->h.uh->source;
-	sin->sin_addr.s_addr = skb->nh.iph->saddr;
-	rqstp->rq_addrlen = sizeof(struct sockaddr_in);
+	rqstp->rq_prot = IPPROTO_UDP;
 
-	/* Remember which interface received this request */
-	rqstp->rq_daddr.addr.s_addr = skb->nh.iph->daddr;
+	svc_udp_get_sender_address(rqstp, skb);
 
 	if (skb_is_nonlinear(skb)) {
 		/* we have to copy */

[PATCH 014 of 14] knfsd: SUNRPC: fix up svc_create_socket() to take a sockaddr struct + length

[NeilBrown]

From: Chuck Lever <chuck.lever@oracle.com>

Replace existing svc_create_socket() API to allow callers to pass addresses
larger than a sockaddr_in.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./net/sunrpc/svcsock.c |   16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c	2007-02-02 15:22:58.000000000 +1100
+++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:59.000000000 +1100
@@ -1691,7 +1691,7 @@ EXPORT_SYMBOL_GPL(svc_addsock);
  * Create socket for RPC service.
  */
 static int svc_create_socket(struct svc_serv *serv, int protocol,
-				struct sockaddr_in *sin, int flags)
+				struct sockaddr *sin, int len, int flags)
 {
 	struct svc_sock	*svsk;
 	struct socket	*sock;
@@ -1701,8 +1701,7 @@ static int svc_create_socket(struct svc_
 
 	dprintk("svc: svc_create_socket(%s, %d, %s)\n",
 			serv->sv_program->pg_name, protocol,
-			__svc_print_addr((struct sockaddr *) sin, buf,
-								sizeof(buf)));
+			__svc_print_addr(sin, buf, sizeof(buf)));
 
 	if (protocol != IPPROTO_UDP && protocol != IPPROTO_TCP) {
 		printk(KERN_WARNING "svc: only UDP and TCP "
@@ -1711,15 +1710,15 @@ static int svc_create_socket(struct svc_
 	}
 	type = (protocol == IPPROTO_UDP)? SOCK_DGRAM : SOCK_STREAM;
 
-	if ((error = sock_create_kern(PF_INET, type, protocol, &sock)) < 0)
+	error = sock_create_kern(sin->sa_family, type, protocol, &sock);
+	if (error < 0)
 		return error;
 
 	svc_reclassify_socket(sock);
 
 	if (type == SOCK_STREAM)
-		sock->sk->sk_reuse = 1; /* allow address reuse */
-	error = kernel_bind(sock, (struct sockaddr *) sin,
-					sizeof(*sin));
+		sock->sk->sk_reuse = 1;		/* allow address reuse */
+	error = kernel_bind(sock, sin, len);
 	if (error < 0)
 		goto bummer;
 
@@ -1799,7 +1798,8 @@ int svc_makesock(struct svc_serv *serv, 
 	};
 
 	dprintk("svc: creating socket proto = %d\n", protocol);
-	return svc_create_socket(serv, protocol, &sin, flags);
+	return svc_create_socket(serv, protocol, (struct sockaddr *) &sin,
+							sizeof(sin), flags);
 }
 
 /*

Re: [PATCH 000 of 14] knfsd: Preparation for IPv6 support in NFS server.

[Roland Dreier]

 > They are mostly from Chuck Level and make preparating for IPv6 support
 > in the NFS server.
 > They are *not* for 2.6.20, but should be ok for .21.

Out of curiousity, does this patch series reduce the delta between the
NFS/RDMA tree and mainline Linux?  In other words does this bring
NFS/RDMA closer to merging?

 - R.

Re: [PATCH 000 of 14] knfsd: Preparation for IPv6 support in NFS server.

[Neil Brown]

On Thursday February 1, rdreier@cisco.com wrote:
>  > They are mostly from Chuck Level and make preparating for IPv6 support
>  > in the NFS server.
>  > They are *not* for 2.6.20, but should be ok for .21.
> 
> Out of curiousity, does this patch series reduce the delta between the
> NFS/RDMA tree and mainline Linux?  In other words does this bring
> NFS/RDMA closer to merging?
> 
>  - R.

No idea.  I haven't seen any RDMA patches.  I seem to remember hearing
them mentioned some time ago, but I haven't gone looking for them.

NeilBrown

Re: [PATCH 000 of 14] knfsd: Preparation for IPv6 support in NFS server.

[Jeff Garzik]

Roland Dreier wrote:
>  > They are mostly from Chuck Level and make preparating for IPv6 support
>  > in the NFS server.
>  > They are *not* for 2.6.20, but should be ok for .21.
> 
> Out of curiousity, does this patch series reduce the delta between the
> NFS/RDMA tree and mainline Linux?  In other words does this bring
> NFS/RDMA closer to merging?

NFS/RDMA is IMO more than a little bit questionable, and the likely 
userbase is also quite small.  I'm not sure its worth a mainline merge 
at this point.

	Jeff

Re: [NFS] [PATCH 000 of 14] knfsd: Preparation for IPv6 support in NFS server.

[Christoph Hellwig]

On Fri, Feb 02, 2007 at 01:02:24AM -0500, Jeff Garzik wrote:
> NFS/RDMA is IMO more than a little bit questionable, and the likely 
> userbase is also quite small.  I'm not sure its worth a mainline merge 
> at this point.

Why do you think so?  In my eyes it's actually one of the few useful
applications for RDMA, especially combined with something like pnfs [*].
Also if you'd look at the patches they're very clean - it's just another
possible transport with almost no invastion to the core code.


[*] yes, the actual pnfs spec is fugly as hell and symptom of the nfsv4
    design by comittee braindamage, but the idea is sound..

Re: [NFS] [PATCH 000 of 14] knfsd: Preparation for IPv6 support in NFS server.

[Chuck Lever]

[-- Attachment #1: Type: text/plain, Size: 809 bytes --]

Roland Dreier wrote:
>  > They are mostly from Chuck Level and make preparating for IPv6 support
>  > in the NFS server.
>  > They are *not* for 2.6.20, but should be ok for .21.
> 
> Out of curiousity, does this patch series reduce the delta between the
> NFS/RDMA tree and mainline Linux?  In other words does this bring
> NFS/RDMA closer to merging?

Hi Roland-

The client side support for an RPC/RDMA module is almost completely 
integrated into mainline.  There is still a minimal set of patches 
required to support alternate transports in loadable kernel modules 
which Trond has indicated he will integrate when the RPC/RDMA transport 
is ready to be integrated.

At this time I'm not aware of a plan to integrate server-side support 
for NFS/RDMA.  Perhaps the NetApp RDMA developers could respond.

[-- Attachment #2: chuck.lever.vcf --]
[-- Type: text/x-vcard, Size: 265 bytes --]

begin:vcard
fn:Chuck Lever
n:Lever;Chuck
org:Oracle Corporation;Corporate Architecture Linux Projects Group
email;internet:chuck dot lever at nospam oracle dot com
title:Principle Member of Staff
tel;work:+1 248 614 5091
x-mozilla-html:FALSE
version:2.1
end:vcard

Re: [PATCH 013 of 14] knfsd: SUNRPC: support IPv6 addresses in RPC server's UDP receive path.

[Josef Sipek]

On Fri, Feb 02, 2007 at 03:40:44PM +1100, NeilBrown wrote:
...
> diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
> --- .prev/net/sunrpc/svcsock.c	2007-02-02 15:22:40.000000000 +1100
> +++ ./net/sunrpc/svcsock.c	2007-02-02 15:22:58.000000000 +1100
> @@ -715,13 +715,55 @@ svc_write_space(struct sock *sk)
>  	}
>  }
>  
> +static void svc_udp_get_sender_address(struct svc_rqst *rqstp,
> +					struct sk_buff *skb)
> +{
> +	switch (rqstp->rq_sock->sk_sk->sk_family) {
> +	case AF_INET:
> +		/* this seems to come from net/ipv4/udp.c:udp_recvmsg */
> +		do {
> +			struct sockaddr_in *sin = svc_addr_in(rqstp);
> +
> +			sin->sin_family = AF_INET;
> +			sin->sin_port = skb->h.uh->source;
> +			sin->sin_addr.s_addr = skb->nh.iph->saddr;
> +			rqstp->rq_addrlen = sizeof(struct sockaddr_in);
> +			/* Remember which interface received this request */
> +			rqstp->rq_daddr.addr.s_addr = skb->nh.iph->daddr;
> +		} while (0);
> +		break;

Why the while(0) ?

> +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
> +	case AF_INET6:
> +		/* this is derived from net/ipv6/udp.c:udpv6_recvmesg */
> +		do {
> +			struct sockaddr_in6 *sin6 = svc_addr_in6(rqstp);
> +
> +			sin6->sin6_family = AF_INET6;
> +			sin6->sin6_port = skb->h.uh->source;
> +			sin6->sin6_flowinfo = 0;
> +			sin6->sin6_scope_id = 0;
> +			if (ipv6_addr_type(&sin6->sin6_addr) &
> +							IPV6_ADDR_LINKLOCAL)
> +				sin6->sin6_scope_id = IP6CB(skb)->iif;
> +			ipv6_addr_copy(&sin6->sin6_addr,
> +							&skb->nh.ipv6h->saddr);
> +			rqstp->rq_addrlen = sizeof(struct sockaddr_in);
> +			/* Remember which interface received this request */
> +			ipv6_addr_copy(&rqstp->rq_daddr.addr6,
> +							&skb->nh.ipv6h->saddr);
> +		} while (0);
> +		break;

Ditto.

Josef "Jeff" Sipek.

-- 
You measure democracy by the freedom it gives its dissidents, not the
freedom it gives its assimilated conformists.
		- Abbie Hoffman