diff options
| author | Pavel Shilovsky <pshilov@microsoft.com> | 2017-07-08 14:32:00 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-18 09:20:40 +0200 |
| commit | f2bb4bcc041194d655e41a4fb24789f3966755c3 (patch) | |
| tree | 3844107dea46b97b0cc854908ff4351ff202c620 /fs/cifs/cifssmb.c | |
| parent | bd36826958de7cc70a9e7d83c7a6f4916fb863a2 (diff) | |
CIFS: Reconnect expired SMB sessions
commit 511c54a2f69195b28afb9dd119f03787b1625bb4 upstream.
According to the MS-SMB2 spec (3.2.5.1.6) once the client receives
STATUS_NETWORK_SESSION_EXPIRED error code from a server it should
reconnect the current SMB session. Currently the client doesn't do
that. This can result in subsequent client requests failing by
the server. The patch adds an additional logic to the demultiplex
thread to identify expired sessions and reconnect them.
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/cifs/cifssmb.c')
| -rw-r--r-- | fs/cifs/cifssmb.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index b60150e5b5ce..0c92af11f4f4 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1460,6 +1460,13 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) return length; server->total_read += length; + if (server->ops->is_session_expired && + server->ops->is_session_expired(buf)) { + cifs_reconnect(server); + wake_up(&server->response_q); + return -1; + } + if (server->ops->is_status_pending && server->ops->is_status_pending(buf, server, 0)) { discard_remaining_data(server); |