CIFS: Move protocol specific session setup/logoff code to ops struct

Reviewed-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NPavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: NSteve French <smfrench@gmail.com>

fs/cifs/cifsglob.h

@@ -196,6 +196,11 @@ struct smb_version_operations {
 	bool (*need_neg)(struct TCP_Server_Info *);
 	/* negotiate to the server */
 	int (*negotiate)(const unsigned int, struct cifs_ses *);
+	/* setup smb sessionn */
+	int (*sess_setup)(const unsigned int, struct cifs_ses *,
+			  const struct nls_table *);
+	/* close smb session */
+	int (*logoff)(const unsigned int, struct cifs_ses *);
 };
 
 struct smb_version_values {

fs/cifs/cifsproto.h

@@ -112,8 +112,8 @@ extern void header_assemble(struct smb_hdr *, char /* command */ ,
 extern int small_smb_init_no_tc(const int smb_cmd, const int wct,
 				struct cifs_ses *ses,
 				void **request_buf);
-extern int CIFS_SessSetup(unsigned int xid, struct cifs_ses *ses,
-			     const struct nls_table *nls_cp);
+extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
+			  const struct nls_table *nls_cp);
 extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
 extern u64 cifs_UnixTimeToNT(struct timespec);
 extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
@@ -180,8 +180,8 @@ void cifs_proc_clean(void);
 
 extern int cifs_negotiate_protocol(const unsigned int xid,
 				   struct cifs_ses *ses);
-extern int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,
-			struct nls_table *nls_info);
+extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
+			      struct nls_table *nls_info);
 extern int CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses);
 
 extern int CIFSTCon(unsigned int xid, struct cifs_ses *ses,
@@ -391,7 +391,7 @@ extern int CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon,
 			const bool waitFlag);
 extern int CIFSSMBTDis(const int xid, struct cifs_tcon *tcon);
 extern int CIFSSMBEcho(struct TCP_Server_Info *server);
-extern int CIFSSMBLogoff(const int xid, struct cifs_ses *ses);
+extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses);
 
 extern struct cifs_ses *sesInfoAlloc(void);
 extern void sesInfoFree(struct cifs_ses *);

fs/cifs/cifssmb.c

@@ -781,7 +781,7 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
 }
 
 int
-CIFSSMBLogoff(const int xid, struct cifs_ses *ses)
+CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses)
 {
 	LOGOFF_ANDX_REQ *pSMB;
 	int rc = 0;

fs/cifs/connect.c

@@ -2253,7 +2253,7 @@ cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol)
 static void
 cifs_put_smb_ses(struct cifs_ses *ses)
 {
-	int xid;
+	unsigned int xid;
 	struct TCP_Server_Info *server = ses->server;
 
 	cFYI(1, "%s: ses_count=%d", __func__, ses->ses_count);
@@ -2266,9 +2266,9 @@ cifs_put_smb_ses(struct cifs_ses *ses)
 	list_del_init(&ses->smb_ses_list);
 	spin_unlock(&cifs_tcp_ses_lock);
 
-	if (ses->status == CifsGood) {
+	if (ses->status == CifsGood && server->ops->logoff) {
 		xid = GetXid();
-		CIFSSMBLogoff(xid, ses);
+		server->ops->logoff(xid, ses);
 		_FreeXid(xid);
 	}
 	sesInfoFree(ses);
@@ -3989,11 +3989,11 @@ cifs_negotiate_protocol(const unsigned int xid, struct cifs_ses *ses)
 	return rc;
 }
 
-
-int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,
-			struct nls_table *nls_info)
+int
+cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
+		   struct nls_table *nls_info)
 {
-	int rc = 0;
+	int rc = -ENOSYS;
 	struct TCP_Server_Info *server = ses->server;
 
 	ses->flags = 0;
@@ -4004,7 +4004,9 @@ int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,
 	cFYI(1, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d",
 		 server->sec_mode, server->capabilities, server->timeAdj);
 
-	rc = CIFS_SessSetup(xid, ses, nls_info);
+	if (server->ops->sess_setup)
+		rc = server->ops->sess_setup(xid, ses, nls_info);
+
 	if (rc) {
 		cERROR(1, "Send error in SessSetup = %d", rc);
 	} else {

fs/cifs/sess.c

@@ -556,7 +556,7 @@ static int build_ntlmssp_auth_blob(unsigned char *pbuffer,
 }
 
 int
-CIFS_SessSetup(unsigned int xid, struct cifs_ses *ses,
+CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
 	       const struct nls_table *nls_cp)
 {
 	int rc = 0;

fs/cifs/smb1ops.c

@@ -430,6 +430,8 @@ struct smb_version_operations smb1_operations = {
 	.check_trans2 = cifs_check_trans2,
 	.need_neg = cifs_need_neg,
 	.negotiate = cifs_negotiate,
+	.sess_setup = CIFS_SessSetup,
+	.logoff = CIFSSMBLogoff,
 };
 
 struct smb_version_values smb1_values = {