Signed-off-by: Steve French <sfrench@xxxxxxxxxx>
Signed-off-by: Pavel Shilovsky <piastry@xxxxxxxxxxx>
---
fs/cifs/cifsglob.h | 2 ++
fs/cifs/connect.c | 16 +++++++++++++++-
2 files changed, 17 insertions(+), 1 deletions(-)
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 1e1b54b..15c3a92 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -172,6 +172,7 @@ struct smb_vol {
mode_t file_mode;
mode_t dir_mode;
unsigned secFlg;
+ bool use_smb2:1; /* use SMB2 protocol rather that CIFS */
bool retry:1;
bool intr:1;
bool setuids:1;
@@ -292,6 +293,7 @@ struct TCP_Server_Info {
bool sec_kerberos; /* supports plain Kerberos */
bool sec_mskerberos; /* supports legacy MS Kerberos */
bool large_buf; /* is current buffer large? */
+ bool is_smb2; /* smb2 not cifs protocol negotiated */
struct delayed_work echo; /* echo ping workqueue job */
struct kvec *iov; /* reusable kvec array for receives */
unsigned int nr_iov; /* number of kvecs in array */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index d64ab48..ccfcfbe 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1,7 +1,7 @@
/*
* fs/cifs/connect.c
*
- * Copyright (C) International Business Machines Corp., 2002,2009
+ * Copyright (C) International Business Machines Corp., 2002,2011
* Author(s): Steve French (sfrench@xxxxxxxxxx)
*
* This library is free software; you can redistribute it and/or modify
@@ -1763,6 +1763,14 @@ static int match_server(struct TCP_Server_Info *server, struct sockaddr *addr,
(struct sockaddr *)&vol->srcaddr))
return 0;
+#ifdef CONFIG_CIFS_SMB2
+ if ((server->is_smb2 == true) && (vol->use_smb2 == false))
+ return 0;
+
+ if ((server->is_smb2 == false) && (vol->use_smb2 == true))
+ return 0;
+#endif /* CONFIG_CIFS_SMB2 */
+
if (!match_port(server, addr))
return 0;
@@ -1887,6 +1895,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
tcp_ses->noblocksnd = volume_info->noblocksnd;
tcp_ses->noautotune = volume_info->noautotune;
+ /* BB should we set this unconditionally now, especially for SMB2 */
tcp_ses->tcp_nodelay = volume_info->sockopt_tcp_nodelay;
atomic_set(&tcp_ses->inFlight, 0);
init_waitqueue_head(&tcp_ses->response_q);
@@ -1930,6 +1939,11 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
goto out_err_crypto_release;
}
+#ifdef CONFIG_CIFS_SMB2
+ if (volume_info->use_smb2)
+ tcp_ses->is_smb2 = true;
+#endif /* CONFIG_CIFS_SMB2 */
+
/*
* since we're in a cifs function already, we know that
* this will succeed. No need for try_module_get().
--
1.7.1
--
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