cifs: add local server pointer to cifs_setup_session

cifs_setup_session references pSesInfo->server several times. That
pointer shouldn't change during the life of the function so grab it
once and store it in a local var. This makes the code look a little
cleaner too.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 0711db6..4c13bcd 100644 (file)
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -3598,19 +3598,21 @@ int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
        char ntlm_session_key[CIFS_SESS_KEY_SIZE];
        bool ntlmv2_flag = false;
        int first_time = 0;
+       struct TCP_Server_Info *server = pSesInfo->server;
 
        /* what if server changes its buffer size after dropping the session? */
-       if (pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ {
+       if (server->maxBuf == 0) /* no need to send on reconnect */ {
                rc = CIFSSMBNegotiate(xid, pSesInfo);
-               if (rc == -EAGAIN) /* retry only once on 1st time connection */ {
+               if (rc == -EAGAIN) {
+                       /* retry only once on 1st time connection */
                        rc = CIFSSMBNegotiate(xid, pSesInfo);
                        if (rc == -EAGAIN)
                                rc = -EHOSTDOWN;
                }
                if (rc == 0) {
                        spin_lock(&GlobalMid_Lock);
-                       if (pSesInfo->server->tcpStatus != CifsExiting)
-                               pSesInfo->server->tcpStatus = CifsGood;
+                       if (server->tcpStatus != CifsExiting)
+                               server->tcpStatus = CifsGood;
                        else
                                rc = -EHOSTDOWN;
                        spin_unlock(&GlobalMid_Lock);
@@ -3623,23 +3625,22 @@ int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
                goto ss_err_exit;
 
        pSesInfo->flags = 0;
-       pSesInfo->capabilities = pSesInfo->server->capabilities;
+       pSesInfo->capabilities = server->capabilities;
        if (linuxExtEnabled == 0)
                pSesInfo->capabilities &= (~CAP_UNIX);
        /*      pSesInfo->sequence_number = 0;*/
        cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d",
-                pSesInfo->server->secMode,
-                pSesInfo->server->capabilities,
-                pSesInfo->server->timeAdj));
+                server->secMode, server->capabilities, server->timeAdj));
+
        if (experimEnabled < 2)
                rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info);
        else if (extended_security
                        && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY)
-                       && (pSesInfo->server->secType == NTLMSSP)) {
+                       && (server->secType == NTLMSSP)) {
                rc = -EOPNOTSUPP;
        } else if (extended_security
                        && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY)
-                       && (pSesInfo->server->secType == RawNTLMSSP)) {
+                       && (server->secType == RawNTLMSSP)) {
                cFYI(1, ("NTLMSSP sesssetup"));
                rc = CIFSNTLMSSPNegotiateSessSetup(xid, pSesInfo, &ntlmv2_flag,
                                                   nls_info);
@@ -3668,12 +3669,12 @@ int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
 
                        } else {
                                SMBNTencrypt(pSesInfo->password,
-                                            pSesInfo->server->cryptKey,
+                                            server->cryptKey,
                                             ntlm_session_key);
 
                                if (first_time)
                                        cifs_calculate_mac_key(
-                                            &pSesInfo->server->mac_signing_key,
+                                            &server->mac_signing_key,
                                             ntlm_session_key,
                                             pSesInfo->password);
                        }
@@ -3686,13 +3687,13 @@ int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
                                                      nls_info);
                }
        } else { /* old style NTLM 0.12 session setup */
-               SMBNTencrypt(pSesInfo->password, pSesInfo->server->cryptKey,
+               SMBNTencrypt(pSesInfo->password, server->cryptKey,
                             ntlm_session_key);
 
                if (first_time)
-                       cifs_calculate_mac_key(
-                                       &pSesInfo->server->mac_signing_key,
-                                       ntlm_session_key, pSesInfo->password);
+                       cifs_calculate_mac_key(&server->mac_signing_key,
+                                               ntlm_session_key,
+                                               pSesInfo->password);
 
                rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info);
        }