android4.0.4 增加ethernet

已经有人在这方面做了研究了请先看这篇博客：点击打开链接

这个是对android4.0.3增加ethernet我是直接拿过来对android4.0.4增加，过程中有些是不同的，错误比较容易解决这里我就不作具体说明了。只是其中有一点需要修改的在这个地方：

2. system\core\libnetutils\dhcp_utils.c的 dhcp_do_request函数中，把

snprintf(daemon_cmd,sizeof(daemon_cmd),"%s","dhcpcd_wlan0");改成

snprintf(daemon_cmd,sizeof(daemon_cmd),"%s","dhcpcd_eth0");

要是改成这样无线网络就用不了，所以我稍微改了下

    /* Erase any previous setting of the dhcp result property */
    property_set(result_prop_name, "");
#if 0
    /* Start the daemon and wait until it's ready */
    if (property_get(HOSTNAME_PROP_NAME, prop_value, NULL) && (prop_value[0] != '\0'))
        snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:-h %s %s", DAEMON_NAME, daemon_suffix,
                 prop_value, interface);
    else
        snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:%s", DAEMON_NAME, daemon_suffix, interface);
/////////// modfiy by dao  ///////////////////////////////////
    //snprintf(daemon_cmd,sizeof(daemon_cmd),"%s","dhcpcd_wlan0");
      snprintf(daemon_cmd,sizeof(daemon_cmd),"%s","dhcpcd_wlan0");
//////////////////////////////////////////////////////////////
#else
#if 1
    /* Start the daemon and wait until it's ready */
    if (property_get(HOSTNAME_PROP_NAME, prop_value, NULL) && (prop_value[0] != '\0'))
        //snprintf(daemon_cmd, sizeof(daemon_cmd), "%s:-h %s %s", DAEMON_NAME,
                // prop_value, interface);
	snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s", DAEMON_NAME, interface);
    else
#endif
        snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s", DAEMON_NAME, interface);
#endif
    memset(prop_value, '\0', PROPERTY_VALUE_MAX);

把原来的注释掉，然后改成上面那样。

同时在init.rc中加上这个服务:

service dhcpcd_eth0 /system/bin/dhcpcd -o domain_name_servers -dd -ABKL eth0
    class main
    disabled
    oneshot

现在有线和无线就都能正常连接了。