Re: [PATCH] NET: Add the helper kernel_sock_shutdown()

2007-11-12 Thread David Howells
Trond Myklebust [EMAIL PROTECTED] wrote:

 take a SHUT_RD/SHUT_WR/SHUT_RDWR argument instead of the

Hmmm...  Why SHUT_*?  Why not SHUTDOWN_*?

David
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Re: [PATCH] NET: Add the helper kernel_sock_shutdown()

2007-11-12 Thread Trond Myklebust

On Mon, 2007-11-12 at 12:22 +, David Howells wrote:
 Trond Myklebust [EMAIL PROTECTED] wrote:
 
  take a SHUT_RD/SHUT_WR/SHUT_RDWR argument instead of the
 
 Hmmm...  Why SHUT_*?  Why not SHUTDOWN_*?

SHUT_RD/SHUT_WR/SHUT_RDWR are the traditional names for these constants
(see 'man 3 shutdown') and so should be easier to remember. I didn't
however feel comfortable naming the function kernel_shutdown() or
shutdown(), since those have other connotations, hence
kernel_sock_shutdown().

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Re: [PATCH] NET: Add the helper kernel_sock_shutdown()

2007-11-12 Thread David Howells
Trond Myklebust [EMAIL PROTECTED] wrote:

 SHUT_RD/SHUT_WR/SHUT_RDWR are the traditional names for these constants
 (see 'man 3 shutdown') and so should be easier to remember.

Good point.

David
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Re: [PATCH] NET: Add the helper kernel_sock_shutdown()

2007-11-11 Thread Mark Fasheh
On Thu, Nov 08, 2007 at 07:01:36PM -0500, Trond Myklebust wrote:
 From: Trond Myklebust [EMAIL PROTECTED]
 
 ...and fix a couple of bugs in the NBD, CIFS and OCFS2 socket handlers.
 
 Looking at the sock-op-shutdown() handlers, it looks as if all of them
 take a SHUT_RD/SHUT_WR/SHUT_RDWR argument instead of the
 RCV_SHUTDOWN/SEND_SHUTDOWN arguments.
 Add a helper, and then define the SHUT_* enum to ensure that kernel users
 of shutdown() don't get confused.

That looks pretty good - any objection to naming the enum and using that
name in the prototype for kernel_sock_shutdown() so it's even more obvious
what type of shutdown argument this expects?
--Mark

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[EMAIL PROTECTED]
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Re: [PATCH] NET: Add the helper kernel_sock_shutdown()

2007-11-11 Thread Trond Myklebust

On Sun, 2007-11-11 at 10:03 -0800, Mark Fasheh wrote:
 On Thu, Nov 08, 2007 at 07:01:36PM -0500, Trond Myklebust wrote:
  From: Trond Myklebust [EMAIL PROTECTED]
  
  ...and fix a couple of bugs in the NBD, CIFS and OCFS2 socket handlers.
  
  Looking at the sock-op-shutdown() handlers, it looks as if all of them
  take a SHUT_RD/SHUT_WR/SHUT_RDWR argument instead of the
  RCV_SHUTDOWN/SEND_SHUTDOWN arguments.
  Add a helper, and then define the SHUT_* enum to ensure that kernel users
  of shutdown() don't get confused.
 
 That looks pretty good - any objection to naming the enum and using that
 name in the prototype for kernel_sock_shutdown() so it's even more obvious
 what type of shutdown argument this expects?
   --Mark
 
 --
 Mark Fasheh
 Senior Software Developer, Oracle
 [EMAIL PROTECTED]

That would be fine by me. How about the attached patch?

Cheers
  Trond

---BeginMessage---
...and fix a couple of bugs in the NBD, CIFS and OCFS2 socket handlers.

Looking at the sock-op-shutdown() handlers, it looks as if all of them
take a SHUT_RD/SHUT_WR/SHUT_RDWR argument instead of the
RCV_SHUTDOWN/SEND_SHUTDOWN arguments.
Add a helper, and then define the SHUT_* enum to ensure that kernel users
of shutdown() don't get confused.

Signed-off-by: Trond Myklebust [EMAIL PROTECTED]
Cc: Paul Clements [EMAIL PROTECTED]
Cc: Mark Fasheh [EMAIL PROTECTED]
Cc: Steve French [EMAIL PROTECTED]
Cc: David Howells [EMAIL PROTECTED]
Cc: David S Miller [EMAIL PROTECTED]
---

 drivers/block/nbd.c|3 ++-
 fs/cifs/connect.c  |2 +-
 fs/ocfs2/cluster/tcp.c |4 ++--
 include/linux/net.h|8 
 net/rxrpc/ar-local.c   |4 ++--
 net/socket.c   |6 ++
 6 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 6332aca..b4c0888 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -28,6 +28,7 @@
 #include linux/err.h
 #include linux/kernel.h
 #include net/sock.h
+#include linux/net.h
 
 #include asm/uaccess.h
 #include asm/system.h
@@ -126,7 +127,7 @@ static void sock_shutdown(struct nbd_device *lo, int lock)
if (lo-sock) {
printk(KERN_WARNING %s: shutting down socket\n,
lo-disk-disk_name);
-   lo-sock-ops-shutdown(lo-sock, SEND_SHUTDOWN|RCV_SHUTDOWN);
+   kernel_sock_shutdown(lo-sock, SHUT_RDWR);
lo-sock = NULL;
}
if (lock)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 19ee11f..bea0d2e 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -160,7 +160,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
if (server-ssocket) {
cFYI(1, (State: 0x%x Flags: 0x%lx, server-ssocket-state,
server-ssocket-flags));
-   server-ssocket-ops-shutdown(server-ssocket, SEND_SHUTDOWN);
+   kernel_sock_shutdown(server-ssocket, SHUT_WR);
cFYI(1, (Post shutdown state: 0x%x Flags: 0x%lx,
server-ssocket-state,
server-ssocket-flags));
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 685c180..d84bd15 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -58,6 +58,7 @@
 #include linux/slab.h
 #include linux/idr.h
 #include linux/kref.h
+#include linux/net.h
 #include net/tcp.h
 
 #include asm/uaccess.h
@@ -616,8 +617,7 @@ static void o2net_shutdown_sc(struct work_struct *work)
del_timer_sync(sc-sc_idle_timeout);
o2net_sc_cancel_delayed_work(sc, sc-sc_keepalive_work);
sc_put(sc);
-   sc-sc_sock-ops-shutdown(sc-sc_sock,
-  RCV_SHUTDOWN|SEND_SHUTDOWN);
+   kernel_sock_shutdown(sc-sc_sock, SHUT_RDWR);
}
 
/* not fatal so failed connects before the other guy has our
diff --git a/include/linux/net.h b/include/linux/net.h
index dd79cdb..596131e 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -95,6 +95,12 @@ enum sock_type {
 
 #endif /* ARCH_HAS_SOCKET_TYPES */
 
+enum sock_shutdown_cmd {
+   SHUT_RD = 0,
+   SHUT_WR = 1,
+   SHUT_RDWR   = 2,
+};
+
 /**
  *  struct socket - general BSD socket
  *  @state: socket state (%SS_CONNECTED, etc)
@@ -223,6 +229,8 @@ extern int kernel_setsockopt(struct socket *sock, int 
level, int optname,
 extern int kernel_sendpage(struct socket *sock, struct page *page, int offset,
   size_t size, int flags);
 extern int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg);
+extern int kernel_sock_shutdown(struct socket *sock,
+   enum sock_shutdown_cmd how);
 
 #ifndef CONFIG_SMP
 #define SOCKOPS_WRAPPED(name) name
diff --git a/net/rxrpc/ar-local.c b/net/rxrpc/ar-local.c
index fe03f71..f3a2bd7 100644
--- a/net/rxrpc/ar-local.c
+++ b/net/rxrpc/ar-local.c
@@ -114,7 +114,7 @@ static int rxrpc_create_local(struct 

Re: [PATCH] NET: Add the helper kernel_sock_shutdown()

2007-11-11 Thread Mark Fasheh
On Sun, Nov 11, 2007 at 01:40:14PM -0500, Trond Myklebust wrote:
 
 On Sun, 2007-11-11 at 10:03 -0800, Mark Fasheh wrote:
  That looks pretty good - any objection to naming the enum and using that
  name in the prototype for kernel_sock_shutdown() so it's even more obvious
  what type of shutdown argument this expects?
 That would be fine by me. How about the attached patch?

Looks good to me, thanks!

Acked-by: Mark Fasheh [EMAIL PROTECTED]
--Mark

--
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Senior Software Developer, Oracle
[EMAIL PROTECTED]
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[PATCH] NET: Add the helper kernel_sock_shutdown()

2007-11-08 Thread Trond Myklebust
From: Trond Myklebust [EMAIL PROTECTED]

...and fix a couple of bugs in the NBD, CIFS and OCFS2 socket handlers.

Looking at the sock-op-shutdown() handlers, it looks as if all of them
take a SHUT_RD/SHUT_WR/SHUT_RDWR argument instead of the
RCV_SHUTDOWN/SEND_SHUTDOWN arguments.
Add a helper, and then define the SHUT_* enum to ensure that kernel users
of shutdown() don't get confused.

Signed-off-by: Trond Myklebust [EMAIL PROTECTED]
Cc: Paul Clements [EMAIL PROTECTED]
Cc: Mark Fasheh [EMAIL PROTECTED]
Cc: Steve French [EMAIL PROTECTED]
Cc: David Howells [EMAIL PROTECTED]
Cc: David S Miller [EMAIL PROTECTED]
---

 drivers/block/nbd.c|3 ++-
 fs/cifs/connect.c  |2 +-
 fs/ocfs2/cluster/tcp.c |4 ++--
 include/linux/net.h|7 +++
 net/rxrpc/ar-local.c   |4 ++--
 net/socket.c   |6 ++
 6 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 6332aca..b4c0888 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -28,6 +28,7 @@
 #include linux/err.h
 #include linux/kernel.h
 #include net/sock.h
+#include linux/net.h
 
 #include asm/uaccess.h
 #include asm/system.h
@@ -126,7 +127,7 @@ static void sock_shutdown(struct nbd_device *lo, int lock)
if (lo-sock) {
printk(KERN_WARNING %s: shutting down socket\n,
lo-disk-disk_name);
-   lo-sock-ops-shutdown(lo-sock, SEND_SHUTDOWN|RCV_SHUTDOWN);
+   kernel_sock_shutdown(lo-sock, SHUT_RDWR);
lo-sock = NULL;
}
if (lock)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 19ee11f..bea0d2e 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -160,7 +160,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
if (server-ssocket) {
cFYI(1, (State: 0x%x Flags: 0x%lx, server-ssocket-state,
server-ssocket-flags));
-   server-ssocket-ops-shutdown(server-ssocket, SEND_SHUTDOWN);
+   kernel_sock_shutdown(server-ssocket, SHUT_WR);
cFYI(1, (Post shutdown state: 0x%x Flags: 0x%lx,
server-ssocket-state,
server-ssocket-flags));
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 685c180..d84bd15 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -58,6 +58,7 @@
 #include linux/slab.h
 #include linux/idr.h
 #include linux/kref.h
+#include linux/net.h
 #include net/tcp.h
 
 #include asm/uaccess.h
@@ -616,8 +617,7 @@ static void o2net_shutdown_sc(struct work_struct *work)
del_timer_sync(sc-sc_idle_timeout);
o2net_sc_cancel_delayed_work(sc, sc-sc_keepalive_work);
sc_put(sc);
-   sc-sc_sock-ops-shutdown(sc-sc_sock,
-  RCV_SHUTDOWN|SEND_SHUTDOWN);
+   kernel_sock_shutdown(sc-sc_sock, SHUT_RDWR);
}
 
/* not fatal so failed connects before the other guy has our
diff --git a/include/linux/net.h b/include/linux/net.h
index dd79cdb..c804d81 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -95,6 +95,12 @@ enum sock_type {
 
 #endif /* ARCH_HAS_SOCKET_TYPES */
 
+enum {
+   SHUT_RD = 0,
+   SHUT_WR = 1,
+   SHUT_RDWR   = 2,
+};
+
 /**
  *  struct socket - general BSD socket
  *  @state: socket state (%SS_CONNECTED, etc)
@@ -223,6 +229,7 @@ extern int kernel_setsockopt(struct socket *sock, int 
level, int optname,
 extern int kernel_sendpage(struct socket *sock, struct page *page, int offset,
   size_t size, int flags);
 extern int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg);
+extern int kernel_sock_shutdown(struct socket *sock, int how);
 
 #ifndef CONFIG_SMP
 #define SOCKOPS_WRAPPED(name) name
diff --git a/net/rxrpc/ar-local.c b/net/rxrpc/ar-local.c
index fe03f71..f3a2bd7 100644
--- a/net/rxrpc/ar-local.c
+++ b/net/rxrpc/ar-local.c
@@ -114,7 +114,7 @@ static int rxrpc_create_local(struct rxrpc_local *local)
return 0;
 
 error:
-   local-socket-ops-shutdown(local-socket, 2);
+   kernel_sock_shutdown(local-socket, SHUT_RDWR);
local-socket-sk-sk_user_data = NULL;
sock_release(local-socket);
local-socket = NULL;
@@ -267,7 +267,7 @@ static void rxrpc_destroy_local(struct work_struct *work)
/* finish cleaning up the local descriptor */
rxrpc_purge_queue(local-accept_queue);
rxrpc_purge_queue(local-reject_queue);
-   local-socket-ops-shutdown(local-socket, 2);
+   kernel_sock_shutdown(local-socket, SHUT_RDWR);
sock_release(local-socket);
 
up_read(rxrpc_local_sem);
diff --git a/net/socket.c b/net/socket.c
index 5d879fd..1e41b15 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2319,6 +2319,11 @@ int kernel_sock_ioctl(struct socket *sock, int cmd, 
unsigned long arg)
return err;
 }
 
+int kernel_sock_shutdown(struct 

Re: [PATCH] NET: Add the helper kernel_sock_shutdown()

2007-11-08 Thread David Howells

Trond Myklebust [EMAIL PROTECTED] wrote:

 Looking at the sock-op-shutdown() handlers, it looks as if all of them
 take a SHUT_RD/SHUT_WR/SHUT_RDWR argument instead of the
 RCV_SHUTDOWN/SEND_SHUTDOWN arguments.
 Add a helper, and then define the SHUT_* enum to ensure that kernel users
 of shutdown() don't get confused.

Acked-by: David Howells [EMAIL PROTECTED]
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