[PATCH 5.1 119/128] smb3: display session id in debug data

[Greg Kroah-Hartman]

From: Steve French <stfrench@xxxxxxxxxxxxx>

commit b63a9de02d64ecd5ff0749e90253f5b30ba5b9c0 upstream.

Displaying the session id in /proc/fs/cifs/DebugData
is needed in order to correlate Linux client information
with network and server traces for many common support
scenarios.  Turned out to be very important for debugging.

Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
CC: Stable <stable@xxxxxxxxxxxxxxx>
Reviewed-by: Pavel Shilovsky <pshilov@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 fs/cifs/cifs_debug.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -376,6 +376,8 @@ skip_rdma:
 				atomic_read(&server->in_send),
 				atomic_read(&server->num_waiters));
 #endif
+			/* dump session id helpful for use with network trace */
+			seq_printf(m, " SessionId: 0x%llx", ses->Suid);
 			if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
 				seq_puts(m, " encrypted");
 			if (ses->sign)