am 979203ee: Add reset_mask as parameter to ifc_reset_connections
* commit '979203ee34084327bf4f20ad1f878450de94826e':
Add reset_mask as parameter to ifc_reset_connections
diff --git a/include/netutils/ifc.h b/include/netutils/ifc.h
index 36827ee..575e72e 100644
--- a/include/netutils/ifc.h
+++ b/include/netutils/ifc.h
@@ -34,7 +34,7 @@
extern int ifc_enable(const char *ifname);
extern int ifc_disable(const char *ifname);
-extern int ifc_reset_connections(const char *ifname);
+extern int ifc_reset_connections(const char *ifname, const int reset_mask);
extern int ifc_get_addr(const char *name, in_addr_t *addr);
extern int ifc_set_addr(const char *name, in_addr_t addr);
diff --git a/libnetutils/ifc_utils.c b/libnetutils/ifc_utils.c
index e7a7130..c9d6ed2 100644
--- a/libnetutils/ifc_utils.c
+++ b/libnetutils/ifc_utils.c
@@ -353,7 +353,11 @@
return result;
}
-int ifc_reset_connections(const char *ifname)
+#define RESET_IPV4_ADDRESSES 0x01
+#define RESET_IPV6_ADDRESSES 0x02
+#define RESET_ALL_ADDRESSES (RESET_IPV4_ADDRESSES | RESET_IPV6_ADDRESSES)
+
+int ifc_reset_connections(const char *ifname, const int reset_mask)
{
#ifdef HAVE_ANDROID_OS
int result, success;
@@ -361,28 +365,34 @@
struct ifreq ifr;
struct in6_ifreq ifr6;
- /* IPv4. Clear connections on the IP address. */
- ifc_init();
- ifc_get_info(ifname, &myaddr, NULL, NULL);
- ifc_init_ifr(ifname, &ifr);
- init_sockaddr_in(&ifr.ifr_addr, myaddr);
- result = ioctl(ifc_ctl_sock, SIOCKILLADDR, &ifr);
- ifc_close();
-
- /*
- * IPv6. On Linux, when an interface goes down it loses all its IPv6
- * addresses, so we don't know which connections belonged to that interface
- * So we clear all unused IPv6 connections on the device by specifying an
- * empty IPv6 address.
- */
- ifc_init6();
- // This implicitly specifies an address of ::, i.e., kill all IPv6 sockets.
- memset(&ifr6, 0, sizeof(ifr6));
- success = ioctl(ifc_ctl_sock6, SIOCKILLADDR, &ifr6);
- if (result == 0) {
- result = success;
+ if (reset_mask & RESET_IPV4_ADDRESSES) {
+ /* IPv4. Clear connections on the IP address. */
+ ifc_init();
+ ifc_get_info(ifname, &myaddr, NULL, NULL);
+ ifc_init_ifr(ifname, &ifr);
+ init_sockaddr_in(&ifr.ifr_addr, myaddr);
+ result = ioctl(ifc_ctl_sock, SIOCKILLADDR, &ifr);
+ ifc_close();
+ } else {
+ result = 0;
}
- ifc_close6();
+
+ if (reset_mask & RESET_IPV6_ADDRESSES) {
+ /*
+ * IPv6. On Linux, when an interface goes down it loses all its IPv6
+ * addresses, so we don't know which connections belonged to that interface
+ * So we clear all unused IPv6 connections on the device by specifying an
+ * empty IPv6 address.
+ */
+ ifc_init6();
+ // This implicitly specifies an address of ::, i.e., kill all IPv6 sockets.
+ memset(&ifr6, 0, sizeof(ifr6));
+ success = ioctl(ifc_ctl_sock6, SIOCKILLADDR, &ifr6);
+ if (result == 0) {
+ result = success;
+ }
+ ifc_close6();
+ }
return result;
#else