libsystemd-network: use CLOCK_BOOTTIME instead of CLOCK_MONOTONIC where possible

The timeouts in the networking library (DHCP lease timeouts and similar) should not be affected
by suspend. In the cases where CLOCK_BOOTTIME is not implemented, it is still safe to fallback to
CLOCK_MONOTONIC, as the consumers of the library (i.e., networkd) _should_ renew the leases when
coming out of suspend.

8 files changed, 34 insertions, 34 deletions

diff --git a/src/libsystemd-network/sd-dhcp-client.c b/src/libsystemd-network/sd-dhcp-client.c
index f7a4018540..e6225642eb 100644
--- a/src/libsystemd-network/sd-dhcp-client.c
+++ b/src/libsystemd-network/sd-dhcp-client.c
@@ -412,7 +412,7 @@ static int client_send_discover(sd_dhcp_client *client) {
 
         /* See RFC2131 section 4.4.1 */
 
-        r = sd_event_now(client->event, CLOCK_MONOTONIC, &time_now);
+        r = sd_event_now(client->event, clock_boottime_or_monotonic(), &time_now);
         if (r < 0)
                 return r;
         assert(time_now >= client->start_time);
@@ -612,7 +612,7 @@ static int client_timeout_resend(sd_event_source *s, uint64_t usec,
         assert(client);
         assert(client->event);
 
-        r = sd_event_now(client->event, CLOCK_MONOTONIC, &time_now);
+        r = sd_event_now(client->event, clock_boottime_or_monotonic(), &time_now);
         if (r < 0)
                 goto error;
 
@@ -674,7 +674,7 @@ static int client_timeout_resend(sd_event_source *s, uint64_t usec,
 
         r = sd_event_add_time(client->event,
                               &client->timeout_resend,
-                              CLOCK_MONOTONIC,
+                              clock_boottime_or_monotonic(),
                               next_timeout, 10 * USEC_PER_MSEC,
                               client_timeout_resend, client);
         if (r < 0)
@@ -762,7 +762,7 @@ static int client_initialize_events(sd_dhcp_client *client,
 
         r = sd_event_add_time(client->event,
                               &client->timeout_resend,
-                              CLOCK_MONOTONIC,
+                              clock_boottime_or_monotonic(),
                               0, 0,
                               client_timeout_resend, client);
         if (r < 0)
@@ -800,7 +800,7 @@ static int client_start(sd_dhcp_client *client) {
         client->fd = r;
 
         if (client->state == DHCP_STATE_INIT) {
-                client->start_time = now(CLOCK_MONOTONIC);
+                client->start_time = now(clock_boottime_or_monotonic());
                 client->secs = 0;
         }
 
@@ -1006,7 +1006,7 @@ static int client_set_lease_timeouts(sd_dhcp_client *client) {
         if (client->lease->lifetime == 0xffffffff)
                 return 0;
 
-        r = sd_event_now(client->event, CLOCK_MONOTONIC, &time_now);
+        r = sd_event_now(client->event, clock_boottime_or_monotonic(), &time_now);
         if (r < 0)
                 return r;
         assert(client->request_sent <= time_now);
@@ -1057,7 +1057,7 @@ static int client_set_lease_timeouts(sd_dhcp_client *client) {
 
         /* arm lifetime timeout */
         r = sd_event_add_time(client->event, &client->timeout_expire,
-                              CLOCK_MONOTONIC,
+                              clock_boottime_or_monotonic(),
                               lifetime_timeout, 10 * USEC_PER_MSEC,
                               client_timeout_expire, client);
         if (r < 0)
@@ -1079,7 +1079,7 @@ static int client_set_lease_timeouts(sd_dhcp_client *client) {
         /* arm T2 timeout */
         r = sd_event_add_time(client->event,
                               &client->timeout_t2,
-                              CLOCK_MONOTONIC,
+                              clock_boottime_or_monotonic(),
                               t2_timeout,
                               10 * USEC_PER_MSEC,
                               client_timeout_t2, client);
@@ -1102,7 +1102,7 @@ static int client_set_lease_timeouts(sd_dhcp_client *client) {
         /* arm T1 timeout */
         r = sd_event_add_time(client->event,
                               &client->timeout_t1,
-                              CLOCK_MONOTONIC,
+                              clock_boottime_or_monotonic(),
                               t1_timeout, 10 * USEC_PER_MSEC,
                               client_timeout_t1, client);
         if (r < 0)
@@ -1172,7 +1172,7 @@ static int client_handle_message(sd_dhcp_client *client, DHCPMessage *message,
 
                         r = sd_event_add_time(client->event,
                                               &client->timeout_resend,
-                                              CLOCK_MONOTONIC,
+                                              clock_boottime_or_monotonic(),
                                               0, 0,
                                               client_timeout_resend, client);
                         if (r < 0)
diff --git a/src/libsystemd-network/sd-dhcp-server.c b/src/libsystemd-network/sd-dhcp-server.c
index 53cf0d7e46..bcf7d1fa2c 100644
--- a/src/libsystemd-network/sd-dhcp-server.c
+++ b/src/libsystemd-network/sd-dhcp-server.c
@@ -712,9 +712,9 @@ int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message,
                         } else
                                 lease = existing_lease;
 
-                        r = sd_event_now(server->event, CLOCK_MONOTONIC, &time_now);
+                        r = sd_event_now(server->event, clock_boottime_or_monotonic(), &time_now);
                         if (r < 0)
-                                time_now = now(CLOCK_MONOTONIC);
+                                time_now = now(clock_boottime_or_monotonic());
                         lease->expiration = req->lifetime * USEC_PER_SEC + time_now;
 
                         r = server_send_ack(server, req, address);
diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index 13bed67ad3..c6c82eb349 100644
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -460,7 +460,7 @@ static int client_timeout_resend(sd_event_source *s, uint64_t usec,
                 client->retransmit_count++;
 
 
-        r = sd_event_now(client->event, CLOCK_MONOTONIC, &time_now);
+        r = sd_event_now(client->event, clock_boottime_or_monotonic(), &time_now);
         if (r < 0)
                 goto error;
 
@@ -484,7 +484,7 @@ static int client_timeout_resend(sd_event_source *s, uint64_t usec,
                                          client->retransmit_time, 0));
 
         r = sd_event_add_time(client->event, &client->timeout_resend,
-                              CLOCK_MONOTONIC,
+                              clock_boottime_or_monotonic(),
                               time_now + client->retransmit_time,
                               10 * USEC_PER_MSEC, client_timeout_resend,
                               client);
@@ -503,7 +503,7 @@ static int client_timeout_resend(sd_event_source *s, uint64_t usec,
 
                 r = sd_event_add_time(client->event,
                                       &client->timeout_resend_expire,
-                                      CLOCK_MONOTONIC,
+                                      clock_boottime_or_monotonic(),
                                       time_now + max_retransmit_duration,
                                       USEC_PER_SEC,
                                       client_timeout_resend_expire, client);
@@ -908,7 +908,7 @@ static int client_start(sd_dhcp6_client *client, enum DHCP6State state)
 
         case DHCP6_STATE_BOUND:
 
-                r = sd_event_now(client->event, CLOCK_MONOTONIC, &time_now);
+                r = sd_event_now(client->event, clock_boottime_or_monotonic(), &time_now);
                 if (r < 0)
                         return r;
 
@@ -931,7 +931,7 @@ static int client_start(sd_dhcp6_client *client, enum DHCP6State state)
 
                 r = sd_event_add_time(client->event,
                                       &client->lease->ia.timeout_t1,
-                                      CLOCK_MONOTONIC, time_now + timeout,
+                                      clock_boottime_or_monotonic(), time_now + timeout,
                                       10 * USEC_PER_SEC, client_timeout_t1,
                                       client);
                 if (r < 0)
@@ -951,7 +951,7 @@ static int client_start(sd_dhcp6_client *client, enum DHCP6State state)
 
                 r = sd_event_add_time(client->event,
                                       &client->lease->ia.timeout_t2,
-                                      CLOCK_MONOTONIC, time_now + timeout,
+                                      clock_boottime_or_monotonic(), time_now + timeout,
                                       10 * USEC_PER_SEC, client_timeout_t2,
                                       client);
                 if (r < 0)
@@ -970,7 +970,7 @@ static int client_start(sd_dhcp6_client *client, enum DHCP6State state)
         client->transaction_id = random_u32() & htobe32(0x00ffffff);
 
         r = sd_event_add_time(client->event, &client->timeout_resend,
-                              CLOCK_MONOTONIC, 0, 0, client_timeout_resend,
+                              clock_boottime_or_monotonic(), 0, 0, client_timeout_resend,
                               client);
         if (r < 0)
                 return r;
diff --git a/src/libsystemd-network/sd-icmp6-nd.c b/src/libsystemd-network/sd-icmp6-nd.c
index 80915c34d6..b264e793ee 100644
--- a/src/libsystemd-network/sd-icmp6-nd.c
+++ b/src/libsystemd-network/sd-icmp6-nd.c
@@ -255,7 +255,7 @@ static int icmp6_router_solicitation_timeout(sd_event_source *s, uint64_t usec,
 
                 nd->nd_sent++;
 
-                r = sd_event_now(nd->event, CLOCK_MONOTONIC, &time_now);
+                r = sd_event_now(nd->event, clock_boottime_or_monotonic(), &time_now);
                 if (r < 0) {
                         icmp6_nd_notify(nd, r);
                         return 0;
@@ -263,7 +263,7 @@ static int icmp6_router_solicitation_timeout(sd_event_source *s, uint64_t usec,
 
                 next_timeout = time_now + ICMP6_ROUTER_SOLICITATION_INTERVAL;
 
-                r = sd_event_add_time(nd->event, &nd->timeout, CLOCK_MONOTONIC,
+                r = sd_event_add_time(nd->event, &nd->timeout, clock_boottime_or_monotonic(),
                                       next_timeout, 0,
                                       icmp6_router_solicitation_timeout, nd);
                 if (r < 0) {
@@ -322,7 +322,7 @@ int sd_icmp6_router_solicitation_start(sd_icmp6_nd *nd) {
         if (r < 0)
                 goto error;
 
-        r = sd_event_add_time(nd->event, &nd->timeout, CLOCK_MONOTONIC,
+        r = sd_event_add_time(nd->event, &nd->timeout, clock_boottime_or_monotonic(),
                               0, 0, icmp6_router_solicitation_timeout, nd);
         if (r < 0)
                 goto error;
diff --git a/src/libsystemd-network/sd-ipv4ll.c b/src/libsystemd-network/sd-ipv4ll.c
index fd39c12eb2..b17987904a 100644
--- a/src/libsystemd-network/sd-ipv4ll.c
+++ b/src/libsystemd-network/sd-ipv4ll.c
@@ -186,8 +186,8 @@ static void ipv4ll_set_next_wakeup(sd_ipv4ll *ll, int sec, int random_sec) {
         if (random_sec)
                 next_timeout += random_u32() % (random_sec * USEC_PER_SEC);
 
-        if (sd_event_now(ll->event, CLOCK_MONOTONIC, &time_now) < 0)
-                time_now = now(CLOCK_MONOTONIC);
+        if (sd_event_now(ll->event, clock_boottime_or_monotonic(), &time_now) < 0)
+                time_now = now(clock_boottime_or_monotonic());
 
         ll->next_wakeup = time_now + next_timeout;
         ll->next_wakeup_valid = 1;
@@ -289,7 +289,7 @@ static void ipv4ll_run_state_machine(sd_ipv4ll *ll, IPv4LLTrigger trigger, void
 
                         if (ipv4ll_arp_conflict(ll, in_packet)) {
 
-                                r = sd_event_now(ll->event, CLOCK_MONOTONIC, &time_now);
+                                r = sd_event_now(ll->event, clock_boottime_or_monotonic(), &time_now);
                                 if (r < 0)
                                         goto out;
 
@@ -344,7 +344,7 @@ static void ipv4ll_run_state_machine(sd_ipv4ll *ll, IPv4LLTrigger trigger, void
 
         if (ll->next_wakeup_valid) {
                 ll->timer = sd_event_source_unref(ll->timer);
-                r = sd_event_add_time(ll->event, &ll->timer, CLOCK_MONOTONIC,
+                r = sd_event_add_time(ll->event, &ll->timer, clock_boottime_or_monotonic(),
                                       ll->next_wakeup, 0, ipv4ll_timer, ll);
                 if (r < 0)
                         goto out;
@@ -562,8 +562,8 @@ int sd_ipv4ll_start (sd_ipv4ll *ll) {
 
         r = sd_event_add_time(ll->event,
                               &ll->timer,
-                              CLOCK_MONOTONIC,
-                              now(CLOCK_MONOTONIC), 0,
+                              clock_boottime_or_monotonic(),
+                              now(clock_boottime_or_monotonic()), 0,
                               ipv4ll_timer, ll);
 
         if (r < 0)
diff --git a/src/libsystemd-network/test-dhcp-client.c b/src/libsystemd-network/test-dhcp-client.c
index 7cbe10d5a7..c48aa04b8d 100644
--- a/src/libsystemd-network/test-dhcp-client.c
+++ b/src/libsystemd-network/test-dhcp-client.c
@@ -447,7 +447,7 @@ static int test_addr_acq_recv_discover(size_t size, DHCPMessage *discover) {
 }
 
 static void test_addr_acq(sd_event *e) {
-        usec_t time_now = now(CLOCK_MONOTONIC);
+        usec_t time_now = now(clock_boottime_or_monotonic());
         sd_dhcp_client *client;
         int res, r;
 
@@ -470,7 +470,7 @@ static void test_addr_acq(sd_event *e) {
         callback_recv = test_addr_acq_recv_discover;
 
         assert_se(sd_event_add_time(e, &test_hangcheck,
-                                    CLOCK_MONOTONIC,
+                                    clock_boottime_or_monotonic(),
                                     time_now + 2 * USEC_PER_SEC, 0,
                                     test_dhcp_hangcheck, NULL) >= 0);
 
diff --git a/src/libsystemd-network/test-dhcp6-client.c b/src/libsystemd-network/test-dhcp6-client.c
index 5bb410dab3..96c68e1feb 100644
--- a/src/libsystemd-network/test-dhcp6-client.c
+++ b/src/libsystemd-network/test-dhcp6-client.c
@@ -537,7 +537,7 @@ static void test_client_solicit_cb(sd_dhcp6_client *client, int event,
 
 static int test_client_solicit(sd_event *e) {
         sd_dhcp6_client *client;
-        usec_t time_now = now(CLOCK_MONOTONIC);
+        usec_t time_now = now(clock_boottime_or_monotonic());
 
         if (verbose)
                 printf("* %s\n", __FUNCTION__);
@@ -553,7 +553,7 @@ static int test_client_solicit(sd_event *e) {
         assert_se(sd_dhcp6_client_set_callback(client,
                                                test_client_solicit_cb, e) >= 0);
 
-        assert_se(sd_event_add_time(e, &hangcheck, CLOCK_MONOTONIC,
+        assert_se(sd_event_add_time(e, &hangcheck, clock_boottime_or_monotonic(),
                                     time_now + 2 * USEC_PER_SEC, 0,
                                     test_hangcheck, NULL) >= 0);
 
diff --git a/src/libsystemd-network/test-icmp6-rs.c b/src/libsystemd-network/test-icmp6-rs.c
index b81211f6bc..afa8562659 100644
--- a/src/libsystemd-network/test-icmp6-rs.c
+++ b/src/libsystemd-network/test-icmp6-rs.c
@@ -108,7 +108,7 @@ static void test_rs_done(sd_icmp6_nd *nd, int event, void *userdata) {
 }
 
 static void test_rs(sd_event *e) {
-        usec_t time_now = now(CLOCK_MONOTONIC);
+        usec_t time_now = now(clock_boottime_or_monotonic());
         sd_icmp6_nd *nd;
 
         if (verbose)
@@ -123,7 +123,7 @@ static void test_rs(sd_event *e) {
         assert(sd_icmp6_nd_set_mac(nd, &mac_addr) >= 0);
         assert(sd_icmp6_nd_set_callback(nd, test_rs_done, e) >= 0);
 
-        assert(sd_event_add_time(e, &test_hangcheck, CLOCK_MONOTONIC,
+        assert(sd_event_add_time(e, &test_hangcheck, clock_boottime_or_monotonic(),
                                  time_now + 2 *USEC_PER_SEC, 0,
                                  test_rs_hangcheck, NULL) >= 0);