iscsi-target: Refactor iscsit_get_np sockaddr matching into iscsit_check_np_match
This patch refactors the sockaddr matching logic in iscsit_get_np() into
a seperate iscsit_check_np_match() that can be used by external code.
Tested-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 339f97f..23a98e6 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -264,16 +264,50 @@
return 0;
}
-static struct iscsi_np *iscsit_get_np(
+bool iscsit_check_np_match(
struct __kernel_sockaddr_storage *sockaddr,
+ struct iscsi_np *np,
int network_transport)
{
struct sockaddr_in *sock_in, *sock_in_e;
struct sockaddr_in6 *sock_in6, *sock_in6_e;
- struct iscsi_np *np;
- int ip_match = 0;
+ bool ip_match = false;
u16 port;
+ if (sockaddr->ss_family == AF_INET6) {
+ sock_in6 = (struct sockaddr_in6 *)sockaddr;
+ sock_in6_e = (struct sockaddr_in6 *)&np->np_sockaddr;
+
+ if (!memcmp(&sock_in6->sin6_addr.in6_u,
+ &sock_in6_e->sin6_addr.in6_u,
+ sizeof(struct in6_addr)))
+ ip_match = true;
+
+ port = ntohs(sock_in6->sin6_port);
+ } else {
+ sock_in = (struct sockaddr_in *)sockaddr;
+ sock_in_e = (struct sockaddr_in *)&np->np_sockaddr;
+
+ if (sock_in->sin_addr.s_addr == sock_in_e->sin_addr.s_addr)
+ ip_match = true;
+
+ port = ntohs(sock_in->sin_port);
+ }
+
+ if ((ip_match == true) && (np->np_port == port) &&
+ (np->np_network_transport == network_transport))
+ return true;
+
+ return false;
+}
+
+static struct iscsi_np *iscsit_get_np(
+ struct __kernel_sockaddr_storage *sockaddr,
+ int network_transport)
+{
+ struct iscsi_np *np;
+ bool match;
+
spin_lock_bh(&np_lock);
list_for_each_entry(np, &g_np_list, np_list) {
spin_lock(&np->np_thread_lock);
@@ -282,29 +316,8 @@
continue;
}
- if (sockaddr->ss_family == AF_INET6) {
- sock_in6 = (struct sockaddr_in6 *)sockaddr;
- sock_in6_e = (struct sockaddr_in6 *)&np->np_sockaddr;
-
- if (!memcmp(&sock_in6->sin6_addr.in6_u,
- &sock_in6_e->sin6_addr.in6_u,
- sizeof(struct in6_addr)))
- ip_match = 1;
-
- port = ntohs(sock_in6->sin6_port);
- } else {
- sock_in = (struct sockaddr_in *)sockaddr;
- sock_in_e = (struct sockaddr_in *)&np->np_sockaddr;
-
- if (sock_in->sin_addr.s_addr ==
- sock_in_e->sin_addr.s_addr)
- ip_match = 1;
-
- port = ntohs(sock_in->sin_port);
- }
-
- if ((ip_match == 1) && (np->np_port == port) &&
- (np->np_network_transport == network_transport)) {
+ match = iscsit_check_np_match(sockaddr, np, network_transport);
+ if (match == true) {
/*
* Increment the np_exports reference count now to
* prevent iscsit_del_np() below from being called