| /* |
| * |
| * Embedded Linux library |
| * |
| * Copyright (C) 2011-2014 Intel Corporation. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <sys/socket.h> |
| #include <linux/rtnetlink.h> |
| #include <net/if.h> |
| #include <assert.h> |
| |
| #include <ell/ell.h> |
| |
| static void do_debug(const char *str, void *user_data) |
| { |
| const char *prefix = user_data; |
| |
| l_info("%s%s", prefix, str); |
| } |
| |
| static void getlink_callback(int error, uint16_t type, const void *data, |
| uint32_t len, void *user_data) |
| { |
| const struct ifinfomsg *ifi = data; |
| struct rtattr *rta; |
| int bytes; |
| char ifname[IF_NAMESIZE]; |
| uint32_t index, flags; |
| |
| if (error) |
| goto done; |
| |
| bytes = len - NLMSG_ALIGN(sizeof(struct ifinfomsg)); |
| |
| memset(ifname, 0, sizeof(ifname)); |
| |
| index = ifi->ifi_index; |
| flags = ifi->ifi_flags; |
| |
| for (rta = IFLA_RTA(ifi); RTA_OK(rta, bytes); |
| rta = RTA_NEXT(rta, bytes)) { |
| switch (rta->rta_type) { |
| case IFLA_IFNAME: |
| if (RTA_PAYLOAD(rta) <= IF_NAMESIZE) |
| strcpy(ifname, RTA_DATA(rta)); |
| break; |
| } |
| } |
| |
| l_info("index=%d flags=0x%08x name=%s", index, flags, ifname); |
| |
| done: |
| l_main_quit(); |
| } |
| |
| static void link_notification(uint16_t type, void const * data, |
| uint32_t len, void * user_data) |
| { |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| struct l_netlink *netlink; |
| struct ifinfomsg msg; |
| unsigned int link_id; |
| |
| if (!l_main_init()) |
| return -1; |
| |
| l_log_set_stderr(); |
| |
| netlink = l_netlink_new(NETLINK_ROUTE); |
| |
| l_netlink_set_debug(netlink, do_debug, "[NETLINK] ", NULL); |
| |
| memset(&msg, 0, sizeof(msg)); |
| |
| l_netlink_send(netlink, RTM_GETLINK, NLM_F_DUMP, &msg, sizeof(msg), |
| getlink_callback, NULL, NULL); |
| |
| link_id = l_netlink_register(netlink, RTNLGRP_LINK, |
| link_notification, NULL, NULL); |
| |
| l_main_run(); |
| |
| assert(l_netlink_unregister(netlink, link_id)); |
| |
| l_netlink_destroy(netlink); |
| |
| l_main_exit(); |
| |
| return 0; |
| } |