+ r = sd_rtnl_message_read_u8(m, IFLA_OPERSTATE, &operstate);
+ if (r < 0)
+ /* if we got a message without operstate, take it to mean
+ the state was unchanged */
+ operstate = link->kernel_operstate;
+
+ if ((link->flags == flags) && (link->kernel_operstate == operstate))
+ return 0;
+
+ if (link->flags != flags) {
+ log_debug_link(link, "flags change:%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+ FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags),
+ FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags),
+ FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags),
+ FLAG_STRING("UP", IFF_UP, link->flags, flags),
+ FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags),
+ FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags),
+ FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags),
+ FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags),
+ FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags),
+ FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags),
+ FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags),
+ FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags),
+ FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags),
+ FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags),
+ FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags),
+ FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags),
+ FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags),
+ FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags),
+ FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags));
+
+ unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP |
+ IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING |
+ IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT |
+ IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL |
+ IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP |
+ IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO);
+ unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags);
+ unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags);
+
+ /* link flags are currently at most 18 bits, let's align to printing 20 */
+ if (unknown_flags_added)
+ log_debug_link(link, "unknown link flags gained: %#.5x (ignoring)",
+ unknown_flags_added);
+
+ if (unknown_flags_removed)
+ log_debug_link(link, "unknown link flags lost: %#.5x (ignoring)",
+ unknown_flags_removed);
+ }
+
+ carrier_gained = !link_has_carrier(link->flags, link->kernel_operstate) &&
+ link_has_carrier(flags, operstate);
+ carrier_lost = link_has_carrier(link->flags, link->kernel_operstate) &&
+ !link_has_carrier(flags, operstate);
+
+ link->flags = flags;
+ link->kernel_operstate = operstate;
+
+ link_save(link);
+
+ if (link->state == LINK_STATE_FAILED ||
+ link->state == LINK_STATE_UNMANAGED)
+ return 0;
+
+ if (carrier_gained) {
+ log_info_link(link, "gained carrier");
+
+ if (link->network) {
+ r = link_acquire_conf(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+ }
+ } else if (carrier_lost) {
+ log_info_link(link, "lost carrier");
+
+ r = link_stop_clients(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+static int link_up_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ Link *link = userdata;
+ int r;
+
+ assert(link);
+
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) {
+ link_unref(link);
+ return 1;
+ }
+
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0) {
+ /* we warn but don't fail the link, as it may
+ be brought up later */
+ log_struct_link(LOG_WARNING, link,
+ "MESSAGE=%-*s: could not bring up interface: %s",
+ IFNAMSIZ,
+ link->ifname, strerror(-r),
+ "ERRNO=%d", -r,
+ NULL);
+ }
+
+ link_unref(link);
+
+ return 1;
+}
+
+static int link_up(Link *link) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+ int r;
+
+ assert(link);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+
+ log_debug_link(link, "bringing link up");
+
+ r = sd_rtnl_message_new_link(link->manager->rtnl, &req,
+ RTM_SETLINK, link->ifindex);
+ if (r < 0) {
+ log_error_link(link, "Could not allocate RTM_SETLINK message");
+ return r;
+ }
+
+ r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP);
+ if (r < 0) {