cifs: make status checks in version independent callers

The status of tcp session, smb session and tcon have the
same flow, irrespective of the SMB version used. Hence
these status checks and updates should happen in the
version independent callers of these commands.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: sprasad-microsoft

fs/cifs/connect.c

@@ -3770,10 +3770,6 @@ CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
 	if (rc == 0) {
 		bool is_unicode;
 
-		spin_lock(&cifs_tcp_ses_lock);
-		tcon->tidStatus = CifsGood;
-		spin_unlock(&cifs_tcp_ses_lock);
-		tcon->need_reconnect = false;
 		tcon->tid = smb_buffer_response->Tid;
 		bcc_ptr = pByteArea(smb_buffer_response);
 		bytes_left = get_bcc(smb_buffer_response);
@@ -3949,7 +3945,14 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 		spin_lock(&cifs_tcp_ses_lock);
 		if (server->tcpStatus == CifsInSessSetup)
 			server->tcpStatus = CifsGood;
+		/* Even if one channel is active, session is in good state */
+		if (ses->status == CifsInSessSetup)
+			ses->status = CifsGood;
 		spin_unlock(&cifs_tcp_ses_lock);
+
+		spin_lock(&ses->chan_lock);
+		cifs_chan_clear_need_reconnect(ses, server);
+		spin_unlock(&ses->chan_lock);
 	}
 
 	return rc;
@@ -4461,8 +4464,15 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru
 
 	if (rc) {
 		spin_lock(&cifs_tcp_ses_lock);
-		tcon->tidStatus = CifsNeedTcon;
+		if (tcon->tidStatus == CifsInTcon)
+			tcon->tidStatus = CifsNeedTcon;
+		spin_unlock(&cifs_tcp_ses_lock);
+	} else {
+		spin_lock(&cifs_tcp_ses_lock);
+		if (tcon->tidStatus == CifsInTcon)
+			tcon->tidStatus = CifsGood;
 		spin_unlock(&cifs_tcp_ses_lock);
+		tcon->need_reconnect = false;
 	}
 
 	return rc;
@@ -4487,8 +4497,15 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru
 	rc = ops->tree_connect(xid, tcon->ses, tcon->treeName, tcon, nlsc);
 	if (rc) {
 		spin_lock(&cifs_tcp_ses_lock);
-		tcon->tidStatus = CifsNeedTcon;
+		if (tcon->tidStatus == CifsInTcon)
+			tcon->tidStatus = CifsNeedTcon;
 		spin_unlock(&cifs_tcp_ses_lock);
+	} else {
+		spin_lock(&cifs_tcp_ses_lock);
+		if (tcon->tidStatus == CifsInTcon)
+			tcon->tidStatus = CifsGood;
+		spin_unlock(&cifs_tcp_ses_lock);
+		tcon->need_reconnect = false;
 	}
 
 	return rc;

fs/cifs/sess.c

@@ -1052,15 +1052,6 @@ sess_establish_session(struct sess_data *sess_data)
 	mutex_unlock(&server->srv_mutex);
 
 	cifs_dbg(FYI, "CIFS session established successfully\n");
-	spin_lock(&ses->chan_lock);
-	cifs_chan_clear_need_reconnect(ses, server);
-	spin_unlock(&ses->chan_lock);
-
-	/* Even if one channel is active, session is in good state */
-	spin_lock(&cifs_tcp_ses_lock);
-	ses->status = CifsGood;
-	spin_unlock(&cifs_tcp_ses_lock);
-
 	return 0;
 }
 

fs/cifs/smb2pdu.c

@@ -1386,16 +1386,6 @@ SMB2_sess_establish_session(struct SMB2_sess_data *sess_data)
 	mutex_unlock(&server->srv_mutex);
 
 	cifs_dbg(FYI, "SMB2/3 session established successfully\n");
-
-	spin_lock(&ses->chan_lock);
-	cifs_chan_clear_need_reconnect(ses, server);
-	spin_unlock(&ses->chan_lock);
-
-	/* Even if one channel is active, session is in good state */
-	spin_lock(&cifs_tcp_ses_lock);
-	ses->status = CifsGood;
-	spin_unlock(&cifs_tcp_ses_lock);
-
 	return rc;
 }
 
@@ -1923,10 +1913,6 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
 	tcon->share_flags = le32_to_cpu(rsp->ShareFlags);
 	tcon->capabilities = rsp->Capabilities; /* we keep caps little endian */
 	tcon->maximal_access = le32_to_cpu(rsp->MaximalAccess);
-	spin_lock(&cifs_tcp_ses_lock);
-	tcon->tidStatus = CifsGood;
-	spin_unlock(&cifs_tcp_ses_lock);
-	tcon->need_reconnect = false;
 	tcon->tid = le32_to_cpu(rsp->hdr.Id.SyncId.TreeId);
 	strlcpy(tcon->treeName, tree, sizeof(tcon->treeName));