static void test_public_api_setters(sd_event *e) {
struct in_addr address = {};
unsigned seed = 0;
sd_ipv4ll *ll;
struct ether_addr mac_addr = {
.ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}};
if (verbose)
printf("* %s\n", __FUNCTION__);
assert_se(sd_ipv4ll_new(&ll) == 0);
assert_se(ll);
assert_se(sd_ipv4ll_attach_event(NULL, NULL, 0) == -EINVAL);
assert_se(sd_ipv4ll_attach_event(ll, e, 0) == 0);
assert_se(sd_ipv4ll_attach_event(ll, e, 0) == -EBUSY);
assert_se(sd_ipv4ll_set_callback(NULL, NULL, NULL) == -EINVAL);
assert_se(sd_ipv4ll_set_callback(ll, NULL, NULL) == 0);
assert_se(sd_ipv4ll_set_address(ll, &address) == -EINVAL);
address.s_addr |= htobe32(169U << 24 | 254U << 16);
assert_se(sd_ipv4ll_set_address(ll, &address) == -EINVAL);
address.s_addr |= htobe32(0x00FF);
assert_se(sd_ipv4ll_set_address(ll, &address) == -EINVAL);
address.s_addr |= htobe32(0xF000);
assert_se(sd_ipv4ll_set_address(ll, &address) == 0);
address.s_addr |= htobe32(0x0F00);
assert_se(sd_ipv4ll_set_address(ll, &address) == -EINVAL);
assert_se(sd_ipv4ll_set_address_seed(NULL, seed) == -EINVAL);
assert_se(sd_ipv4ll_set_address_seed(ll, seed) == 0);
assert_se(sd_ipv4ll_set_mac(NULL, NULL) == -EINVAL);
assert_se(sd_ipv4ll_set_mac(ll, NULL) == -EINVAL);
assert_se(sd_ipv4ll_set_mac(ll, &mac_addr) == 0);
assert_se(sd_ipv4ll_set_index(NULL, -1) == -EINVAL);
assert_se(sd_ipv4ll_set_index(ll, -1) == -EINVAL);
assert_se(sd_ipv4ll_set_index(ll, -99) == -EINVAL);
assert_se(sd_ipv4ll_set_index(ll, 1) == 0);
assert_se(sd_ipv4ll_set_index(ll, 99) == 0);
assert_se(sd_ipv4ll_ref(ll) == ll);
assert_se(sd_ipv4ll_unref(ll) == NULL);
/* Cleanup */
assert_se(sd_ipv4ll_unref(ll) == NULL);
}
static int client_run(int ifindex, const char *seed_str, const struct ether_addr *ha, sd_event *e) {
sd_ipv4ll *ll;
assert_se(sd_ipv4ll_new(&ll) >= 0);
assert_se(sd_ipv4ll_attach_event(ll, e, 0) >= 0);
assert_se(sd_ipv4ll_set_index(ll, ifindex) >= 0);
assert_se(sd_ipv4ll_set_mac(ll, ha) >= 0);
assert_se(sd_ipv4ll_set_callback(ll, ll_handler, NULL) >= 0);
if (seed_str) {
unsigned seed;
assert_se(safe_atou(seed_str, &seed) >= 0);
assert_se(sd_ipv4ll_set_address_seed(ll, seed) >= 0);
}
log_info("starting IPv4LL client");
assert_se(sd_ipv4ll_start(ll) >= 0);
assert_se(sd_event_loop(e) >= 0);
assert_se(!sd_ipv4ll_unref(ll));
return EXIT_SUCCESS;
}
int ipv4ll_configure(Link *link) {
uint8_t seed[8];
int r;
assert(link);
assert(link->network);
assert(link->network->link_local & ADDRESS_FAMILY_IPV4);
if (!link->ipv4ll) {
r = sd_ipv4ll_new(&link->ipv4ll);
if (r < 0)
return r;
}
if (link->udev_device) {
r = net_get_unique_predictable_data(link->udev_device, seed);
if (r >= 0) {
assert_cc(sizeof(unsigned) <= 8);
r = sd_ipv4ll_set_address_seed(link->ipv4ll, *(unsigned *)seed);
if (r < 0)
return r;
}
}
r = sd_ipv4ll_attach_event(link->ipv4ll, NULL, 0);
if (r < 0)
return r;
r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac);
if (r < 0)
return r;
r = sd_ipv4ll_set_index(link->ipv4ll, link->ifindex);
if (r < 0)
return r;
r = sd_ipv4ll_set_callback(link->ipv4ll, ipv4ll_handler, link);
if (r < 0)
return r;
return 0;
}
int sd_ipv4ll_set_mac(sd_ipv4ll *ll, const struct ether_addr *addr) {
int r;
assert_return(ll, -EINVAL);
if (!ll->random_data) {
uint64_t seed;
/* If no random data is set, generate some from the MAC */
seed = siphash24(&addr->ether_addr_octet, ETH_ALEN, HASH_KEY.bytes);
assert_cc(sizeof(unsigned) <= 8);
r = sd_ipv4ll_set_address_seed(ll, (unsigned) htole64(seed));
if (r < 0)
return r;
}
return sd_ipv4acd_set_mac(ll->acd, addr);
}
int ipv4ll_configure(Link *link) {
uint8_t seed[8];
int r;
assert(link);
assert(link->network);
assert(link->network->ipv4ll);
r = sd_ipv4ll_new(&link->ipv4ll);
if (r < 0)
return r;
if (link->udev_device) {
r = net_get_unique_predictable_data(link->udev_device, seed);
if (r >= 0) {
r = sd_ipv4ll_set_address_seed(link->ipv4ll, seed);
if (r < 0)
return r;
}
}
r = sd_ipv4ll_attach_event(link->ipv4ll, NULL, 0);
if (r < 0)
return r;
r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac);
if (r < 0)
return r;
r = sd_ipv4ll_set_index(link->ipv4ll, link->ifindex);
if (r < 0)
return r;
r = sd_ipv4ll_set_callback(link->ipv4ll, ipv4ll_handler, link);
if (r < 0)
return r;
return 0;
}
int ipv4ll_configure(Link *link) {
uint64_t seed;
int r;
assert(link);
assert(link->network);
assert(link->network->link_local & ADDRESS_FAMILY_IPV4);
if (!link->ipv4ll) {
r = sd_ipv4ll_new(&link->ipv4ll);
if (r < 0)
return r;
}
if (link->sd_device &&
net_get_unique_predictable_data(link->sd_device, &seed) >= 0) {
r = sd_ipv4ll_set_address_seed(link->ipv4ll, seed);
if (r < 0)
return r;
}
r = sd_ipv4ll_attach_event(link->ipv4ll, NULL, 0);
if (r < 0)
return r;
r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac);
if (r < 0)
return r;
r = sd_ipv4ll_set_ifindex(link->ipv4ll, link->ifindex);
if (r < 0)
return r;
r = sd_ipv4ll_set_callback(link->ipv4ll, ipv4ll_handler, link);
if (r < 0)
return r;
return 0;
}
int sd_ipv4ll_start (sd_ipv4ll *ll) {
int r;
assert_return(ll, -EINVAL);
assert_return(ll->event, -EINVAL);
assert_return(ll->index > 0, -EINVAL);
assert_return(IN_SET(ll->state, IPV4LL_STATE_INIT,
IPV4LL_STATE_STOPPED), -EBUSY);
ll->state = IPV4LL_STATE_INIT;
r = arp_network_bind_raw_socket(ll->index, &ll->link);
if (r < 0)
goto out;
ll->fd = r;
ll->conflict = 0;
ll->defend_window = 0;
ll->claimed_address = 0;
if (!ll->random_data) {
uint8_t seed[8];
/* Fallback to mac */
siphash24(seed, &ll->mac_addr.ether_addr_octet,
ETH_ALEN, HASH_KEY.bytes);
r = sd_ipv4ll_set_address_seed(ll, seed);
if (r < 0)
goto out;
}
if (ll->address == 0) {
r = ipv4ll_pick_address(ll, &ll->address);
if (r < 0)
goto out;
}
ipv4ll_set_state (ll, IPV4LL_STATE_INIT, 1);
r = sd_event_add_io(ll->event, &ll->receive_message, ll->fd,
EPOLLIN, ipv4ll_receive_message, ll);
if (r < 0)
goto out;
r = sd_event_source_set_priority(ll->receive_message, ll->event_priority);
if (r < 0)
goto out;
r = sd_event_source_set_description(ll->receive_message, "ipv4ll-receive-message");
if (r < 0)
goto out;
r = sd_event_add_time(ll->event,
&ll->timer,
clock_boottime_or_monotonic(),
now(clock_boottime_or_monotonic()), 0,
ipv4ll_timer, ll);
if (r < 0)
goto out;
r = sd_event_source_set_priority(ll->timer, ll->event_priority);
if (r < 0)
goto out;
r = sd_event_source_set_description(ll->timer, "ipv4ll-timer");
out:
if (r < 0)
ipv4ll_stop(ll, IPV4LL_EVENT_STOP);
return 0;
}
