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(ll->state == IPV4LL_STATE_INIT, -EBUSY);
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->address == 0)
ll->address = ipv4ll_pick_address(ll);
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_add_monotonic(ll->event, &ll->timer, now(CLOCK_MONOTONIC), 0,
ipv4ll_timer, ll);
if (r < 0)
goto out;
r = sd_event_source_set_priority(ll->timer, ll->event_priority);
out:
if (r < 0)
ipv4ll_stop(ll, IPV4LL_EVENT_STOP);
return 0;
}
int sd_ipv4acd_start(sd_ipv4acd *ll) {
int r;
assert_return(ll, -EINVAL);
assert_return(ll->event, -EINVAL);
assert_return(ll->index > 0, -EINVAL);
assert_return(ll->address != 0, -EINVAL);
assert_return(!ether_addr_is_nul(&ll->mac_addr), -EINVAL);
assert_return(ll->state == IPV4ACD_STATE_INIT, -EBUSY);
ll->defend_window = 0;
r = arp_network_bind_raw_socket(ll->index, ll->address, &ll->mac_addr);
if (r < 0)
goto out;
ll->fd = safe_close(ll->fd);
ll->fd = r;
r = sd_event_add_io(ll->event, &ll->receive_message, ll->fd,
EPOLLIN, ipv4acd_on_packet, 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, "ipv4acd-receive-message");
if (r < 0)
goto out;
r = ipv4acd_set_next_wakeup(ll, 0, 0);
if (r < 0)
goto out;
out:
if (r < 0) {
ipv4acd_stop(ll);
return r;
}
return 0;
}
int sd_ipv4acd_start(sd_ipv4acd *acd) {
int r;
assert_return(acd, -EINVAL);
assert_return(acd->event, -EINVAL);
assert_return(acd->ifindex > 0, -EINVAL);
assert_return(acd->address != 0, -EINVAL);
assert_return(!ether_addr_is_null(&acd->mac_addr), -EINVAL);
assert_return(acd->state == IPV4ACD_STATE_INIT, -EBUSY);
r = arp_network_bind_raw_socket(acd->ifindex, acd->address, &acd->mac_addr);
if (r < 0)
return r;
safe_close(acd->fd);
acd->fd = r;
acd->defend_window = 0;
acd->n_conflict = 0;
r = sd_event_add_io(acd->event, &acd->receive_message_event_source, acd->fd, EPOLLIN, ipv4acd_on_packet, acd);
if (r < 0)
goto fail;
r = sd_event_source_set_priority(acd->receive_message_event_source, acd->event_priority);
if (r < 0)
goto fail;
(void) sd_event_source_set_description(acd->receive_message_event_source, "ipv4acd-receive-message");
r = ipv4acd_set_next_wakeup(acd, 0, 0);
if (r < 0)
goto fail;
ipv4acd_set_state(acd, IPV4ACD_STATE_STARTED, true);
return 0;
fail:
ipv4acd_reset(acd);
return r;
}
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;
}
