ipv4acd: rename "ll" parameter to "acd" everywhere

Appears to be a (confusing) left-over from copy/paste when this still was
ipv4ll code.
This commit is contained in:
Lennart Poettering
2016-05-26 15:34:43 +02:00
parent 703945c1dc
commit b24ef0493a
2 changed files with 165 additions and 165 deletions
+152 -152
View File
@@ -86,140 +86,140 @@ struct sd_ipv4acd {
void* userdata;
};
#define log_ipv4acd_errno(ll, error, fmt, ...) log_internal(LOG_DEBUG, error, __FILE__, __LINE__, __func__, "IPV4ACD: " fmt, ##__VA_ARGS__)
#define log_ipv4acd(ll, fmt, ...) log_ipv4acd_errno(ll, 0, fmt, ##__VA_ARGS__)
#define log_ipv4acd_errno(acd, error, fmt, ...) log_internal(LOG_DEBUG, error, __FILE__, __LINE__, __func__, "IPV4ACD: " fmt, ##__VA_ARGS__)
#define log_ipv4acd(acd, fmt, ...) log_ipv4acd_errno(acd, 0, fmt, ##__VA_ARGS__)
static void ipv4acd_set_state(sd_ipv4acd *ll, IPv4ACDState st, bool reset_counter) {
assert(ll);
static void ipv4acd_set_state(sd_ipv4acd *acd, IPv4ACDState st, bool reset_counter) {
assert(acd);
assert(st < _IPV4ACD_STATE_MAX);
if (st == ll->state && !reset_counter)
ll->n_iteration++;
if (st == acd->state && !reset_counter)
acd->n_iteration++;
else {
ll->state = st;
ll->n_iteration = 0;
acd->state = st;
acd->n_iteration = 0;
}
}
static void ipv4acd_reset(sd_ipv4acd *ll) {
assert(ll);
static void ipv4acd_reset(sd_ipv4acd *acd) {
assert(acd);
ll->timer_event_source = sd_event_source_unref(ll->timer_event_source);
ll->receive_message_event_source = sd_event_source_unref(ll->receive_message_event_source);
acd->timer_event_source = sd_event_source_unref(acd->timer_event_source);
acd->receive_message_event_source = sd_event_source_unref(acd->receive_message_event_source);
ll->fd = safe_close(ll->fd);
acd->fd = safe_close(acd->fd);
ipv4acd_set_state(ll, IPV4ACD_STATE_INIT, true);
ipv4acd_set_state(acd, IPV4ACD_STATE_INIT, true);
}
sd_ipv4acd *sd_ipv4acd_ref(sd_ipv4acd *ll) {
if (!ll)
sd_ipv4acd *sd_ipv4acd_ref(sd_ipv4acd *acd) {
if (!acd)
return NULL;
assert_se(ll->n_ref >= 1);
ll->n_ref++;
assert_se(acd->n_ref >= 1);
acd->n_ref++;
return ll;
return acd;
}
sd_ipv4acd *sd_ipv4acd_unref(sd_ipv4acd *ll) {
if (!ll)
sd_ipv4acd *sd_ipv4acd_unref(sd_ipv4acd *acd) {
if (!acd)
return NULL;
assert_se(ll->n_ref >= 1);
ll->n_ref--;
assert_se(acd->n_ref >= 1);
acd->n_ref--;
if (ll->n_ref > 0)
if (acd->n_ref > 0)
return NULL;
ipv4acd_reset(ll);
sd_ipv4acd_detach_event(ll);
ipv4acd_reset(acd);
sd_ipv4acd_detach_event(acd);
free(ll);
free(acd);
return NULL;
}
int sd_ipv4acd_new(sd_ipv4acd **ret) {
_cleanup_(sd_ipv4acd_unrefp) sd_ipv4acd *ll = NULL;
_cleanup_(sd_ipv4acd_unrefp) sd_ipv4acd *acd = NULL;
assert_return(ret, -EINVAL);
ll = new0(sd_ipv4acd, 1);
if (!ll)
acd = new0(sd_ipv4acd, 1);
if (!acd)
return -ENOMEM;
ll->n_ref = 1;
ll->state = IPV4ACD_STATE_INIT;
ll->ifindex = -1;
ll->fd = -1;
acd->n_ref = 1;
acd->state = IPV4ACD_STATE_INIT;
acd->ifindex = -1;
acd->fd = -1;
*ret = ll;
ll = NULL;
*ret = acd;
acd = NULL;
return 0;
}
static void ipv4acd_client_notify(sd_ipv4acd *ll, int event) {
assert(ll);
static void ipv4acd_client_notify(sd_ipv4acd *acd, int event) {
assert(acd);
if (!ll->callback)
if (!acd->callback)
return;
ll->callback(ll, event, ll->userdata);
acd->callback(acd, event, acd->userdata);
}
int sd_ipv4acd_stop(sd_ipv4acd *ll) {
assert_return(ll, -EINVAL);
int sd_ipv4acd_stop(sd_ipv4acd *acd) {
assert_return(acd, -EINVAL);
ipv4acd_reset(ll);
ipv4acd_reset(acd);
log_ipv4acd(ll, "STOPPED");
log_ipv4acd(acd, "STOPPED");
ipv4acd_client_notify(ll, SD_IPV4ACD_EVENT_STOP);
ipv4acd_client_notify(acd, SD_IPV4ACD_EVENT_STOP);
return 0;
}
static int ipv4acd_on_timeout(sd_event_source *s, uint64_t usec, void *userdata);
static int ipv4acd_set_next_wakeup(sd_ipv4acd *ll, usec_t usec, usec_t random_usec) {
static int ipv4acd_set_next_wakeup(sd_ipv4acd *acd, usec_t usec, usec_t random_usec) {
_cleanup_(sd_event_source_unrefp) sd_event_source *timer = NULL;
usec_t next_timeout, time_now;
int r;
assert(ll);
assert(acd);
next_timeout = usec;
if (random_usec > 0)
next_timeout += (usec_t) random_u64() % random_usec;
assert_se(sd_event_now(ll->event, clock_boottime_or_monotonic(), &time_now) >= 0);
assert_se(sd_event_now(acd->event, clock_boottime_or_monotonic(), &time_now) >= 0);
r = sd_event_add_time(ll->event, &timer, clock_boottime_or_monotonic(), time_now + next_timeout, 0, ipv4acd_on_timeout, ll);
r = sd_event_add_time(acd->event, &timer, clock_boottime_or_monotonic(), time_now + next_timeout, 0, ipv4acd_on_timeout, acd);
if (r < 0)
return r;
r = sd_event_source_set_priority(timer, ll->event_priority);
r = sd_event_source_set_priority(timer, acd->event_priority);
if (r < 0)
return r;
(void) sd_event_source_set_description(timer, "ipv4acd-timer");
sd_event_source_unref(ll->timer_event_source);
ll->timer_event_source = timer;
sd_event_source_unref(acd->timer_event_source);
acd->timer_event_source = timer;
timer = NULL;
return 0;
}
static bool ipv4acd_arp_conflict(sd_ipv4acd *ll, struct ether_arp *arp) {
assert(ll);
static bool ipv4acd_arp_conflict(sd_ipv4acd *acd, struct ether_arp *arp) {
assert(acd);
assert(arp);
/* see the BPF */
if (memcmp(arp->arp_spa, &ll->address, sizeof(ll->address)) == 0)
if (memcmp(arp->arp_spa, &acd->address, sizeof(acd->address)) == 0)
return true;
/* the TPA matched instead of the SPA, this is not a conflict */
@@ -227,27 +227,27 @@ static bool ipv4acd_arp_conflict(sd_ipv4acd *ll, struct ether_arp *arp) {
}
static int ipv4acd_on_timeout(sd_event_source *s, uint64_t usec, void *userdata) {
sd_ipv4acd *ll = userdata;
sd_ipv4acd *acd = userdata;
int r = 0;
assert(ll);
assert(acd);
switch (ll->state) {
switch (acd->state) {
case IPV4ACD_STATE_STARTED:
ipv4acd_set_state(ll, IPV4ACD_STATE_WAITING_PROBE, true);
ipv4acd_set_state(acd, IPV4ACD_STATE_WAITING_PROBE, true);
if (ll->n_conflict >= MAX_CONFLICTS) {
if (acd->n_conflict >= MAX_CONFLICTS) {
char ts[FORMAT_TIMESPAN_MAX];
log_ipv4acd(ll, "Max conflicts reached, delaying by %s", format_timespan(ts, sizeof(ts), RATE_LIMIT_INTERVAL_USEC, 0));
log_ipv4acd(acd, "Max conflicts reached, delaying by %s", format_timespan(ts, sizeof(ts), RATE_LIMIT_INTERVAL_USEC, 0));
r = ipv4acd_set_next_wakeup(ll, RATE_LIMIT_INTERVAL_USEC, PROBE_WAIT_USEC);
r = ipv4acd_set_next_wakeup(acd, RATE_LIMIT_INTERVAL_USEC, PROBE_WAIT_USEC);
if (r < 0)
goto fail;
ll->n_conflict = 0;
acd->n_conflict = 0;
} else {
r = ipv4acd_set_next_wakeup(ll, 0, PROBE_WAIT_USEC);
r = ipv4acd_set_next_wakeup(acd, 0, PROBE_WAIT_USEC);
if (r < 0)
goto fail;
}
@@ -257,28 +257,28 @@ static int ipv4acd_on_timeout(sd_event_source *s, uint64_t usec, void *userdata)
case IPV4ACD_STATE_WAITING_PROBE:
case IPV4ACD_STATE_PROBING:
/* Send a probe */
r = arp_send_probe(ll->fd, ll->ifindex, ll->address, &ll->mac_addr);
r = arp_send_probe(acd->fd, acd->ifindex, acd->address, &acd->mac_addr);
if (r < 0) {
log_ipv4acd_errno(ll, r, "Failed to send ARP probe: %m");
log_ipv4acd_errno(acd, r, "Failed to send ARP probe: %m");
goto fail;
} else {
_cleanup_free_ char *address = NULL;
union in_addr_union addr = { .in.s_addr = ll->address };
union in_addr_union addr = { .in.s_addr = acd->address };
(void) in_addr_to_string(AF_INET, &addr, &address);
log_ipv4acd(ll, "Probing %s", strna(address));
log_ipv4acd(acd, "Probing %s", strna(address));
}
if (ll->n_iteration < PROBE_NUM - 2) {
ipv4acd_set_state(ll, IPV4ACD_STATE_PROBING, false);
if (acd->n_iteration < PROBE_NUM - 2) {
ipv4acd_set_state(acd, IPV4ACD_STATE_PROBING, false);
r = ipv4acd_set_next_wakeup(ll, PROBE_MIN_USEC, (PROBE_MAX_USEC-PROBE_MIN_USEC));
r = ipv4acd_set_next_wakeup(acd, PROBE_MIN_USEC, (PROBE_MAX_USEC-PROBE_MIN_USEC));
if (r < 0)
goto fail;
} else {
ipv4acd_set_state(ll, IPV4ACD_STATE_WAITING_ANNOUNCE, true);
ipv4acd_set_state(acd, IPV4ACD_STATE_WAITING_ANNOUNCE, true);
r = ipv4acd_set_next_wakeup(ll, ANNOUNCE_WAIT_USEC, 0);
r = ipv4acd_set_next_wakeup(acd, ANNOUNCE_WAIT_USEC, 0);
if (r < 0)
goto fail;
}
@@ -286,8 +286,8 @@ static int ipv4acd_on_timeout(sd_event_source *s, uint64_t usec, void *userdata)
break;
case IPV4ACD_STATE_ANNOUNCING:
if (ll->n_iteration >= ANNOUNCE_NUM - 1) {
ipv4acd_set_state(ll, IPV4ACD_STATE_RUNNING, false);
if (acd->n_iteration >= ANNOUNCE_NUM - 1) {
ipv4acd_set_state(acd, IPV4ACD_STATE_RUNNING, false);
break;
}
@@ -295,22 +295,22 @@ static int ipv4acd_on_timeout(sd_event_source *s, uint64_t usec, void *userdata)
case IPV4ACD_STATE_WAITING_ANNOUNCE:
/* Send announcement packet */
r = arp_send_announcement(ll->fd, ll->ifindex, ll->address, &ll->mac_addr);
r = arp_send_announcement(acd->fd, acd->ifindex, acd->address, &acd->mac_addr);
if (r < 0) {
log_ipv4acd_errno(ll, r, "Failed to send ARP announcement: %m");
log_ipv4acd_errno(acd, r, "Failed to send ARP announcement: %m");
goto fail;
} else
log_ipv4acd(ll, "ANNOUNCE");
log_ipv4acd(acd, "ANNOUNCE");
ipv4acd_set_state(ll, IPV4ACD_STATE_ANNOUNCING, false);
ipv4acd_set_state(acd, IPV4ACD_STATE_ANNOUNCING, false);
r = ipv4acd_set_next_wakeup(ll, ANNOUNCE_INTERVAL_USEC, 0);
r = ipv4acd_set_next_wakeup(acd, ANNOUNCE_INTERVAL_USEC, 0);
if (r < 0)
goto fail;
if (ll->n_iteration == 0) {
ll->n_conflict = 0;
ipv4acd_client_notify(ll, SD_IPV4ACD_EVENT_BIND);
if (acd->n_iteration == 0) {
acd->n_conflict = 0;
ipv4acd_client_notify(acd, SD_IPV4ACD_EVENT_BIND);
}
break;
@@ -322,23 +322,23 @@ static int ipv4acd_on_timeout(sd_event_source *s, uint64_t usec, void *userdata)
return 0;
fail:
sd_ipv4acd_stop(ll);
sd_ipv4acd_stop(acd);
return 0;
}
static void ipv4acd_on_conflict(sd_ipv4acd *ll) {
static void ipv4acd_on_conflict(sd_ipv4acd *acd) {
_cleanup_free_ char *address = NULL;
union in_addr_union addr = { .in.s_addr = ll->address };
union in_addr_union addr = { .in.s_addr = acd->address };
assert(ll);
assert(acd);
ll->n_conflict++;
acd->n_conflict++;
(void) in_addr_to_string(AF_INET, &addr, &address);
log_ipv4acd(ll, "Conflict on %s (%u)", strna(address), ll->n_conflict);
log_ipv4acd(acd, "Conflict on %s (%u)", strna(address), acd->n_conflict);
ipv4acd_reset(ll);
ipv4acd_client_notify(ll, SD_IPV4ACD_EVENT_CONFLICT);
ipv4acd_reset(acd);
ipv4acd_client_notify(acd, SD_IPV4ACD_EVENT_CONFLICT);
}
static int ipv4acd_on_packet(
@@ -347,13 +347,13 @@ static int ipv4acd_on_packet(
uint32_t revents,
void *userdata) {
sd_ipv4acd *ll = userdata;
sd_ipv4acd *acd = userdata;
struct ether_arp packet;
ssize_t n;
int r;
assert(s);
assert(ll);
assert(acd);
assert(fd >= 0);
n = recv(fd, &packet, sizeof(struct ether_arp), 0);
@@ -361,36 +361,36 @@ static int ipv4acd_on_packet(
if (errno == EAGAIN || errno == EINTR)
return 0;
log_ipv4acd_errno(ll, errno, "Failed to read ARP packet: %m");
log_ipv4acd_errno(acd, errno, "Failed to read ARP packet: %m");
goto fail;
}
if ((size_t) n != sizeof(struct ether_arp)) {
log_ipv4acd(ll, "Ignoring too short ARP packet.");
log_ipv4acd(acd, "Ignoring too short ARP packet.");
return 0;
}
switch (ll->state) {
switch (acd->state) {
case IPV4ACD_STATE_ANNOUNCING:
case IPV4ACD_STATE_RUNNING:
if (ipv4acd_arp_conflict(ll, &packet)) {
if (ipv4acd_arp_conflict(acd, &packet)) {
usec_t ts;
assert_se(sd_event_now(ll->event, clock_boottime_or_monotonic(), &ts) >= 0);
assert_se(sd_event_now(acd->event, clock_boottime_or_monotonic(), &ts) >= 0);
/* Defend address */
if (ts > ll->defend_window) {
ll->defend_window = ts + DEFEND_INTERVAL_USEC;
r = arp_send_announcement(ll->fd, ll->ifindex, ll->address, &ll->mac_addr);
if (ts > acd->defend_window) {
acd->defend_window = ts + DEFEND_INTERVAL_USEC;
r = arp_send_announcement(acd->fd, acd->ifindex, acd->address, &acd->mac_addr);
if (r < 0) {
log_ipv4acd_errno(ll, r, "Failed to send ARP announcement: %m");
log_ipv4acd_errno(acd, r, "Failed to send ARP announcement: %m");
goto fail;
} else
log_ipv4acd(ll, "DEFEND");
log_ipv4acd(acd, "DEFEND");
} else
ipv4acd_on_conflict(ll);
ipv4acd_on_conflict(acd);
}
break;
@@ -398,7 +398,7 @@ static int ipv4acd_on_packet(
case IPV4ACD_STATE_PROBING:
case IPV4ACD_STATE_WAITING_ANNOUNCE:
/* BPF ensures this packet indicates a conflict */
ipv4acd_on_conflict(ll);
ipv4acd_on_conflict(acd);
break;
default:
@@ -408,119 +408,119 @@ static int ipv4acd_on_packet(
return 0;
fail:
sd_ipv4acd_stop(ll);
sd_ipv4acd_stop(acd);
return 0;
}
int sd_ipv4acd_set_ifindex(sd_ipv4acd *ll, int ifindex) {
assert_return(ll, -EINVAL);
int sd_ipv4acd_set_ifindex(sd_ipv4acd *acd, int ifindex) {
assert_return(acd, -EINVAL);
assert_return(ifindex > 0, -EINVAL);
assert_return(ll->state == IPV4ACD_STATE_INIT, -EBUSY);
assert_return(acd->state == IPV4ACD_STATE_INIT, -EBUSY);
ll->ifindex = ifindex;
acd->ifindex = ifindex;
return 0;
}
int sd_ipv4acd_set_mac(sd_ipv4acd *ll, const struct ether_addr *addr) {
assert_return(ll, -EINVAL);
int sd_ipv4acd_set_mac(sd_ipv4acd *acd, const struct ether_addr *addr) {
assert_return(acd, -EINVAL);
assert_return(addr, -EINVAL);
assert_return(ll->state == IPV4ACD_STATE_INIT, -EBUSY);
assert_return(acd->state == IPV4ACD_STATE_INIT, -EBUSY);
ll->mac_addr = *addr;
acd->mac_addr = *addr;
return 0;
}
int sd_ipv4acd_detach_event(sd_ipv4acd *ll) {
assert_return(ll, -EINVAL);
int sd_ipv4acd_detach_event(sd_ipv4acd *acd) {
assert_return(acd, -EINVAL);
ll->event = sd_event_unref(ll->event);
acd->event = sd_event_unref(acd->event);
return 0;
}
int sd_ipv4acd_attach_event(sd_ipv4acd *ll, sd_event *event, int64_t priority) {
int sd_ipv4acd_attach_event(sd_ipv4acd *acd, sd_event *event, int64_t priority) {
int r;
assert_return(ll, -EINVAL);
assert_return(!ll->event, -EBUSY);
assert_return(acd, -EINVAL);
assert_return(!acd->event, -EBUSY);
if (event)
ll->event = sd_event_ref(event);
acd->event = sd_event_ref(event);
else {
r = sd_event_default(&ll->event);
r = sd_event_default(&acd->event);
if (r < 0)
return r;
}
ll->event_priority = priority;
acd->event_priority = priority;
return 0;
}
int sd_ipv4acd_set_callback(sd_ipv4acd *ll, sd_ipv4acd_callback_t cb, void *userdata) {
assert_return(ll, -EINVAL);
int sd_ipv4acd_set_callback(sd_ipv4acd *acd, sd_ipv4acd_callback_t cb, void *userdata) {
assert_return(acd, -EINVAL);
ll->callback = cb;
ll->userdata = userdata;
acd->callback = cb;
acd->userdata = userdata;
return 0;
}
int sd_ipv4acd_set_address(sd_ipv4acd *ll, const struct in_addr *address) {
assert_return(ll, -EINVAL);
int sd_ipv4acd_set_address(sd_ipv4acd *acd, const struct in_addr *address) {
assert_return(acd, -EINVAL);
assert_return(address, -EINVAL);
assert_return(ll->state == IPV4ACD_STATE_INIT, -EBUSY);
assert_return(acd->state == IPV4ACD_STATE_INIT, -EBUSY);
ll->address = address->s_addr;
acd->address = address->s_addr;
return 0;
}
int sd_ipv4acd_is_running(sd_ipv4acd *ll) {
assert_return(ll, false);
int sd_ipv4acd_is_running(sd_ipv4acd *acd) {
assert_return(acd, false);
return ll->state != IPV4ACD_STATE_INIT;
return acd->state != IPV4ACD_STATE_INIT;
}
int sd_ipv4acd_start(sd_ipv4acd *ll) {
int sd_ipv4acd_start(sd_ipv4acd *acd) {
int r;
assert_return(ll, -EINVAL);
assert_return(ll->event, -EINVAL);
assert_return(ll->ifindex > 0, -EINVAL);
assert_return(ll->address != 0, -EINVAL);
assert_return(!ether_addr_is_null(&ll->mac_addr), -EINVAL);
assert_return(ll->state == IPV4ACD_STATE_INIT, -EBUSY);
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(ll->ifindex, ll->address, &ll->mac_addr);
r = arp_network_bind_raw_socket(acd->ifindex, acd->address, &acd->mac_addr);
if (r < 0)
return r;
safe_close(ll->fd);
ll->fd = r;
ll->defend_window = 0;
ll->n_conflict = 0;
safe_close(acd->fd);
acd->fd = r;
acd->defend_window = 0;
acd->n_conflict = 0;
r = sd_event_add_io(ll->event, &ll->receive_message_event_source, ll->fd, EPOLLIN, ipv4acd_on_packet, ll);
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(ll->receive_message_event_source, ll->event_priority);
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(ll->receive_message_event_source, "ipv4acd-receive-message");
(void) sd_event_source_set_description(acd->receive_message_event_source, "ipv4acd-receive-message");
r = ipv4acd_set_next_wakeup(ll, 0, 0);
r = ipv4acd_set_next_wakeup(acd, 0, 0);
if (r < 0)
goto fail;
ipv4acd_set_state(ll, IPV4ACD_STATE_STARTED, true);
ipv4acd_set_state(acd, IPV4ACD_STATE_STARTED, true);
return 0;
fail:
ipv4acd_reset(ll);
ipv4acd_reset(acd);
return r;
}
+13 -13
View File
@@ -37,20 +37,20 @@ enum {
};
typedef struct sd_ipv4acd sd_ipv4acd;
typedef void (*sd_ipv4acd_callback_t)(sd_ipv4acd *ll, int event, void *userdata);
typedef void (*sd_ipv4acd_callback_t)(sd_ipv4acd *acd, int event, void *userdata);
int sd_ipv4acd_detach_event(sd_ipv4acd *ll);
int sd_ipv4acd_attach_event(sd_ipv4acd *ll, sd_event *event, int64_t priority);
int sd_ipv4acd_get_address(sd_ipv4acd *ll, struct in_addr *address);
int sd_ipv4acd_set_callback(sd_ipv4acd *ll, sd_ipv4acd_callback_t cb, void *userdata);
int sd_ipv4acd_set_mac(sd_ipv4acd *ll, const struct ether_addr *addr);
int sd_ipv4acd_set_ifindex(sd_ipv4acd *ll, int interface_index);
int sd_ipv4acd_set_address(sd_ipv4acd *ll, const struct in_addr *address);
int sd_ipv4acd_is_running(sd_ipv4acd *ll);
int sd_ipv4acd_start(sd_ipv4acd *ll);
int sd_ipv4acd_stop(sd_ipv4acd *ll);
sd_ipv4acd *sd_ipv4acd_ref(sd_ipv4acd *ll);
sd_ipv4acd *sd_ipv4acd_unref(sd_ipv4acd *ll);
int sd_ipv4acd_detach_event(sd_ipv4acd *acd);
int sd_ipv4acd_attach_event(sd_ipv4acd *acd, sd_event *event, int64_t priority);
int sd_ipv4acd_get_address(sd_ipv4acd *acd, struct in_addr *address);
int sd_ipv4acd_set_callback(sd_ipv4acd *acd, sd_ipv4acd_callback_t cb, void *userdata);
int sd_ipv4acd_set_mac(sd_ipv4acd *acd, const struct ether_addr *addr);
int sd_ipv4acd_set_ifindex(sd_ipv4acd *acd, int interface_index);
int sd_ipv4acd_set_address(sd_ipv4acd *acd, const struct in_addr *address);
int sd_ipv4acd_is_running(sd_ipv4acd *acd);
int sd_ipv4acd_start(sd_ipv4acd *acd);
int sd_ipv4acd_stop(sd_ipv4acd *acd);
sd_ipv4acd *sd_ipv4acd_ref(sd_ipv4acd *acd);
sd_ipv4acd *sd_ipv4acd_unref(sd_ipv4acd *acd);
int sd_ipv4acd_new(sd_ipv4acd **ret);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_ipv4acd, sd_ipv4acd_unref);