[CIFS] cifs_find_tcp_session cleanup

This patch cleans up cifs_find_tcp_session so it become
less indented. Also the error of skipping IPv6 matched
addresses fixed.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 26 insertions, 25 deletions

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 791ca5c1a116..6b520aad7af3 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1318,42 +1318,43 @@ cifs_parse_mount_options(char *options, const char *devname,
 
 static struct cifsSesInfo *
 cifs_find_tcp_session(struct in_addr *target_ip_addr,
-                struct in6_addr *target_ip6_addr,
-                 char *userName, struct TCP_Server_Info **psrvTcp)
+                      struct in6_addr *target_ip6_addr,
+                      char *userName, struct TCP_Server_Info **psrvTcp)
 {
         struct list_head *tmp;
         struct cifsSesInfo *ses;
+
         *psrvTcp = NULL;
-        read_lock(&GlobalSMBSeslock);
 
+        read_lock(&GlobalSMBSeslock);
         list_for_each(tmp, &GlobalSMBSessionList) {
                 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
-                if (ses->server) {
-                        if ((target_ip_addr &&
-                                (ses->server->addr.sockAddr.sin_addr.s_addr
-                                  == target_ip_addr->s_addr)) || (target_ip6_addr
-                                && memcmp(&ses->server->addr.sockAddr6.sin6_addr,
-                                        target_ip6_addr, sizeof(*target_ip6_addr)))) {
-                                /* BB lock server and tcp session and increment
-                                      use count here?? */
-
-                                /* found a match on the TCP session */
-                                *psrvTcp = ses->server;
-
-                                /* BB check if reconnection needed */
-                                if (strncmp
-                                    (ses->userName, userName,
-                                     MAX_USERNAME_SIZE) == 0){
-                                        read_unlock(&GlobalSMBSeslock);
-                                        /* Found exact match on both TCP and
-                                           SMB sessions */
-                                        return ses;
-                                }
-                        }
+                if (!ses->server)
+                        continue;
+
+                if (target_ip_addr &&
+                    ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr)
+                                continue;
+                else if (target_ip6_addr &&
+                         memcmp(&ses->server->addr.sockAddr6.sin6_addr,
+                                target_ip6_addr, sizeof(*target_ip6_addr)))
+                                continue;
+                /* BB lock server and tcp session and increment use count here?? */
+
+                /* found a match on the TCP session */
+                *psrvTcp = ses->server;
+
+                /* BB check if reconnection needed */
+                if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) {
+                        read_unlock(&GlobalSMBSeslock);
+                        /* Found exact match on both TCP and
+                           SMB sessions */
+                        return ses;
                 }
                 /* else tcp and smb sessions need reconnection */
         }
         read_unlock(&GlobalSMBSeslock);
+
         return NULL;
 }