2f8e763376
A field "index" is not particularly precise and also might conflict with libc's index() function definition. Also, pretty much everywhere else we call this concept "ifindex", including in networkd, the primary user of these libraries. Hence, let's fix this up and call this "ifindex" everywhere here too.
115 lines
3.6 KiB
C
115 lines
3.6 KiB
C
/***
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This file is part of systemd.
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Copyright (C) 2014 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <linux/veth.h>
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#include <net/if.h>
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#include "sd-event.h"
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#include "sd-ipv4acd.h"
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#include "sd-netlink.h"
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#include "in-addr-util.h"
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#include "netlink-util.h"
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#include "util.h"
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static void acd_handler(sd_ipv4acd *acd, int event, void *userdata) {
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assert_se(acd);
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switch (event) {
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case SD_IPV4ACD_EVENT_BIND:
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log_info("bound");
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break;
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case SD_IPV4ACD_EVENT_CONFLICT:
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log_info("conflict");
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break;
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case SD_IPV4ACD_EVENT_STOP:
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log_error("the client was stopped");
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break;
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default:
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assert_not_reached("invalid ACD event");
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}
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}
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static int client_run(int ifindex, const struct in_addr *pa, const struct ether_addr *ha, sd_event *e) {
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sd_ipv4acd *acd;
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assert_se(sd_ipv4acd_new(&acd) >= 0);
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assert_se(sd_ipv4acd_attach_event(acd, e, 0) >= 0);
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assert_se(sd_ipv4acd_set_ifindex(acd, ifindex) >= 0);
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assert_se(sd_ipv4acd_set_mac(acd, ha) >= 0);
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assert_se(sd_ipv4acd_set_address(acd, pa) >= 0);
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assert_se(sd_ipv4acd_set_callback(acd, acd_handler, NULL) >= 0);
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log_info("starting IPv4ACD client");
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assert_se(sd_ipv4acd_start(acd) >= 0);
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assert_se(sd_event_loop(e) >= 0);
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assert_se(!sd_ipv4acd_unref(acd));
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return EXIT_SUCCESS;
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}
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static int test_acd(const char *ifname, const char *address) {
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_cleanup_(sd_event_unrefp) sd_event *e = NULL;
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_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
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_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *reply = NULL;
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union in_addr_union pa;
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struct ether_addr ha;
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int ifindex;
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assert_se(in_addr_from_string(AF_INET, address, &pa) >= 0);
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assert_se(sd_event_new(&e) >= 0);
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assert_se(sd_netlink_open(&rtnl) >= 0);
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assert_se(sd_netlink_attach_event(rtnl, e, 0) >= 0);
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assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, 0) >= 0);
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assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, ifname) >= 0);
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assert_se(sd_netlink_call(rtnl, m, 0, &reply) >= 0);
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assert_se(sd_rtnl_message_link_get_ifindex(reply, &ifindex) >= 0);
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assert_se(sd_netlink_message_read_ether_addr(reply, IFLA_ADDRESS, &ha) >= 0);
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client_run(ifindex, &pa.in, &ha, e);
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return EXIT_SUCCESS;
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}
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int main(int argc, char *argv[]) {
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log_set_max_level(LOG_DEBUG);
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log_parse_environment();
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log_open();
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if (argc == 3)
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return test_acd(argv[1], argv[2]);
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else {
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log_error("This program takes two arguments.\n"
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"\t %s <ifname> <IPv4 address>", program_invocation_short_name);
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return EXIT_FAILURE;
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}
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}
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