[CIFS] Ensure that cifs multiplex ids do not collide.

Signed-off-by: Steve French (sfrench@us.ibm.com)

1 files changed, 9 insertions, 0 deletions

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 36f78596c81a..9e8256003f73 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1857,6 +1857,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
         header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
                         NULL /* no tCon exists yet */ , 13 /* wct */ );
 
+        smb_buffer->Mid = GetNextMid(ses->server);
         pSMB->req_no_secext.AndXCommand = 0xFF;
         pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
         pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
@@ -2132,6 +2133,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
         /* send SMBsessionSetup here */
         header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
                         NULL /* no tCon exists yet */ , 12 /* wct */ );
+
+        smb_buffer->Mid = GetNextMid(ses->server);
         pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
         pSMB->req.AndXCommand = 0xFF;
         pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
@@ -2398,6 +2401,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
         /* send SMBsessionSetup here */
         header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
                         NULL /* no tCon exists yet */ , 12 /* wct */ );
+
+        smb_buffer->Mid = GetNextMid(ses->server);
         pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
         pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT);
 
@@ -2740,6 +2745,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
         /* send SMBsessionSetup here */
         header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
                         NULL /* no tCon exists yet */ , 12 /* wct */ );
+
+        smb_buffer->Mid = GetNextMid(ses->server);
         pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT);
         pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
         pSMB->req.AndXCommand = 0xFF;
@@ -3111,6 +3118,8 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
 
         header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX,
                         NULL /*no tid */ , 4 /*wct */ );
+
+        smb_buffer->Mid = GetNextMid(ses->server);
         smb_buffer->Uid = ses->Suid;
         pSMB = (TCONX_REQ *) smb_buffer;
         pSMBr = (TCONX_RSP *) smb_buffer_response;