1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright (C) 2014 Tom Gundersen <teg@jklm.no>
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <linux/veth.h>
29 #include "sd-ipv4ll.h"
30 #include "sd-netlink.h"
32 #include "alloc-util.h"
33 #include "in-addr-util.h"
34 #include "netlink-util.h"
35 #include "parse-util.h"
36 #include "string-util.h"
39 static void ll_handler(sd_ipv4ll
*ll
, int event
, void *userdata
) {
40 _cleanup_free_
char *address
= NULL
;
41 struct in_addr addr
= {};
45 if (sd_ipv4ll_get_address(ll
, &addr
) >= 0)
46 assert_se(in_addr_to_string(AF_INET
, (const union in_addr_union
*) &addr
, &address
) >= 0);
49 case SD_IPV4LL_EVENT_BIND
:
50 log_info("bound %s", strna(address
));
52 case SD_IPV4LL_EVENT_CONFLICT
:
53 log_info("conflict on %s", strna(address
));
55 case SD_IPV4LL_EVENT_STOP
:
56 log_error("the client was stopped with address %s", strna(address
));
59 assert_not_reached("invalid LL event");
63 static int client_run(int ifindex
, const char *seed_str
, const struct ether_addr
*ha
, sd_event
*e
) {
66 assert_se(sd_ipv4ll_new(&ll
) >= 0);
67 assert_se(sd_ipv4ll_attach_event(ll
, e
, 0) >= 0);
69 assert_se(sd_ipv4ll_set_index(ll
, ifindex
) >= 0);
70 assert_se(sd_ipv4ll_set_mac(ll
, ha
) >= 0);
71 assert_se(sd_ipv4ll_set_callback(ll
, ll_handler
, NULL
) >= 0);
76 assert_se(safe_atou(seed_str
, &seed
) >= 0);
78 assert_se(sd_ipv4ll_set_address_seed(ll
, seed
) >= 0);
81 log_info("starting IPv4LL client");
83 assert_se(sd_ipv4ll_start(ll
) >= 0);
85 assert_se(sd_event_loop(e
) >= 0);
87 assert_se(!sd_ipv4ll_unref(ll
));
92 static int test_ll(const char *ifname
, const char *seed
) {
93 _cleanup_(sd_event_unrefp
) sd_event
*e
= NULL
;
94 _cleanup_(sd_netlink_unrefp
) sd_netlink
*rtnl
= NULL
;
95 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*m
= NULL
, *reply
= NULL
;
99 assert_se(sd_event_new(&e
) >= 0);
101 assert_se(sd_netlink_open(&rtnl
) >= 0);
102 assert_se(sd_netlink_attach_event(rtnl
, e
, 0) >= 0);
104 assert_se(sd_rtnl_message_new_link(rtnl
, &m
, RTM_GETLINK
, 0) >= 0);
105 assert_se(sd_netlink_message_append_string(m
, IFLA_IFNAME
, ifname
) >= 0);
106 assert_se(sd_netlink_call(rtnl
, m
, 0, &reply
) >= 0);
108 assert_se(sd_rtnl_message_link_get_ifindex(reply
, &ifindex
) >= 0);
109 assert_se(sd_netlink_message_read_ether_addr(reply
, IFLA_ADDRESS
, &ha
) >= 0);
111 client_run(ifindex
, seed
, &ha
, e
);
116 int main(int argc
, char *argv
[]) {
117 log_set_max_level(LOG_DEBUG
);
118 log_parse_environment();
122 return test_ll(argv
[1], NULL
);
124 return test_ll(argv
[1], argv
[2]);
126 log_error("This program takes one or two arguments.\n"
127 "\t %s <ifname> [<seed>]", program_invocation_short_name
);