cifs: move address comparison into separate function
Move the address comparator out of cifs_find_tcp_session and into a
separate function for cleanliness. Also change the argument to
that function to a "struct sockaddr" pointer. Passing pointers to
sockaddr_storage is a little odd since that struct is generally for
declaring static storage.
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 eca8625..65e760b 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1381,18 +1381,44 @@
return 0;
}
-static struct TCP_Server_Info *
-cifs_find_tcp_session(struct sockaddr_storage *addr)
+static bool
+match_address(struct TCP_Server_Info *server, struct sockaddr *addr)
{
- struct list_head *tmp;
+ struct sockaddr_in *addr4 = (struct sockaddr_in *)addr;
+ struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)addr;
+
+ switch (addr->sa_family) {
+ case AF_INET:
+ if (addr4->sin_addr.s_addr !=
+ server->addr.sockAddr.sin_addr.s_addr)
+ return false;
+ if (addr4->sin_port &&
+ addr4->sin_port != server->addr.sockAddr.sin_port)
+ return false;
+ break;
+ case AF_INET6:
+ if (!ipv6_addr_equal(&addr6->sin6_addr,
+ &server->addr.sockAddr6.sin6_addr))
+ return false;
+ if (addr6->sin6_scope_id !=
+ server->addr.sockAddr6.sin6_scope_id)
+ return false;
+ if (addr6->sin6_port &&
+ addr6->sin6_port != server->addr.sockAddr6.sin6_port)
+ return false;
+ break;
+ }
+
+ return true;
+}
+
+static struct TCP_Server_Info *
+cifs_find_tcp_session(struct sockaddr *addr)
+{
struct TCP_Server_Info *server;
- struct sockaddr_in *addr4 = (struct sockaddr_in *) addr;
- struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr;
write_lock(&cifs_tcp_ses_lock);
- list_for_each(tmp, &cifs_tcp_ses_list) {
- server = list_entry(tmp, struct TCP_Server_Info,
- tcp_ses_list);
+ list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
/*
* the demux thread can exit on its own while still in CifsNew
* so don't accept any sockets in that state. Since the
@@ -1402,35 +1428,8 @@
if (server->tcpStatus == CifsNew)
continue;
- switch (addr->ss_family) {
- case AF_INET:
- if (addr4->sin_addr.s_addr ==
- server->addr.sockAddr.sin_addr.s_addr) {
- /* user overrode default port? */
- if (addr4->sin_port) {
- if (addr4->sin_port !=
- server->addr.sockAddr.sin_port)
- continue;
- }
- break;
- } else
- continue;
-
- case AF_INET6:
- if (ipv6_addr_equal(&addr6->sin6_addr,
- &server->addr.sockAddr6.sin6_addr) &&
- (addr6->sin6_scope_id ==
- server->addr.sockAddr6.sin6_scope_id)) {
- /* user overrode default port? */
- if (addr6->sin6_port) {
- if (addr6->sin6_port !=
- server->addr.sockAddr6.sin6_port)
- continue;
- }
- break;
- } else
- continue;
- }
+ if (!match_address(server, addr))
+ continue;
++server->srv_count;
write_unlock(&cifs_tcp_ses_lock);
@@ -1502,7 +1501,7 @@
}
/* see if we already have a matching tcp_ses */
- tcp_ses = cifs_find_tcp_session(&addr);
+ tcp_ses = cifs_find_tcp_session((struct sockaddr *)&addr);
if (tcp_ses)
return tcp_ses;