- FILE *f;
- char *forward_delay_path;
-
- forward_delay_path =
- g_strdup_printf("/sys/class/net/%s/bridge/forward_delay", name);
-
- if (forward_delay_path == NULL)
- return -ENOMEM;
-
- f = fopen(forward_delay_path, "r+");
-
- g_free(forward_delay_path);
-
- if (f == NULL)
- return -errno;
-
- fprintf(f, "%d", delay);
-
- fclose(f);
-
- return 0;
-}
-
-static int create_bridge(const char *name)
-{
- int sk, err;
-
- DBG("name %s", name);
-
- sk = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
- if (sk < 0)
- return -EOPNOTSUPP;
-
- if (ioctl(sk, SIOCBRADDBR, name) == -1) {
- err = -errno;
- if (err != -EEXIST)
- return -EOPNOTSUPP;
- }
-
- err = set_forward_delay(name, 0);
-
- if (err < 0)
- ioctl(sk, SIOCBRDELBR, name);
-
- close(sk);
-
- return err;
-}
-
-static int remove_bridge(const char *name)
-{
- int sk, err;
-
- DBG("name %s", name);
-
- sk = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
- if (sk < 0)
- return -EOPNOTSUPP;
-
- err = ioctl(sk, SIOCBRDELBR, name);
-
- close(sk);
-
- if (err < 0)
- return -EOPNOTSUPP;
-
- return 0;
-}
-
-static int enable_bridge(const char *name)
-{
- int err, index;
-
- index = connman_inet_ifindex(name);
- if (index < 0)
- return index;
-
- err = __connman_inet_modify_address(RTM_NEWADDR,
- NLM_F_REPLACE | NLM_F_ACK, index, AF_INET,
- BRIDGE_IP, NULL, 24, BRIDGE_BCAST);
- if (err < 0)
- return err;
-
- return connman_inet_ifup(index);
-}
-
-static int disable_bridge(const char *name)
-{
- int index;
-
- index = connman_inet_ifindex(name);
- if (index < 0)
- return index;
-
- return connman_inet_ifdown(index);
-}
-
-static int enable_ip_forward(connman_bool_t enable)
-{
-
- FILE *f;
-
- f = fopen("/proc/sys/net/ipv4/ip_forward", "r+");
- if (f == NULL)
- return -errno;
-
- if (enable == TRUE)
- fprintf(f, "1");
- else
- fprintf(f, "0");
-
- fclose(f);
-
- return 0;
-}
-
-static int enable_nat(const char *interface)
-{
- int err;
-
- if (interface == NULL)
- return 0;
-
- /* Enable IPv4 forwarding */
- err = enable_ip_forward(TRUE);
- if (err < 0)
- return err;
-
- /* POSTROUTING flush */
- err = __connman_iptables_command("-t nat -F POSTROUTING");
- if (err < 0)
- return err;
-
- /* Enable masquerading */
- err = __connman_iptables_command("-t nat -A POSTROUTING "
- "-o %s -j MASQUERADE", interface);
- if (err < 0)
- return err;
-
- return __connman_iptables_commit("nat");
-}
-
-static void disable_nat(const char *interface)
-{
- int err;
-
- /* Disable IPv4 forwarding */
- enable_ip_forward(FALSE);
-
- /* POSTROUTING flush */
- err = __connman_iptables_command("-t nat -F POSTROUTING");
- if (err < 0)
- return;
-
- __connman_iptables_commit("nat");