int link_new(Manager *manager, struct udev_device *device, Link **ret) {
_cleanup_link_free_ Link *link = NULL;
- uint64_t ifindex;
+ const char *mac;
+ struct ether_addr *mac_addr;
+ const char *ifname;
int r;
assert(device);
if (!link)
return -ENOMEM;
- ifindex = udev_device_get_ifindex(device);
- if (ifindex <= 0)
+ link->manager = manager;
+ link->state = _LINK_STATE_INVALID;
+
+ link->ifindex = udev_device_get_ifindex(device);
+ if (link->ifindex <= 0)
return -EINVAL;
- link->ifindex = ifindex;
- link->manager = manager;
+ mac = udev_device_get_sysattr_value(device, "address");
+ if (mac) {
+ mac_addr = ether_aton(mac);
+ if (mac_addr)
+ memcpy(&link->mac, mac_addr, sizeof(struct ether_addr));
+ }
+
+ ifname = udev_device_get_sysname(device);
+ link->ifname = strdup(ifname);
- r = hashmap_put(manager->links, &ifindex, link);
+ r = hashmap_put(manager->links, &link->ifindex, link);
if (r < 0)
return r;
if (!link)
return;
- network_free(link->network);
+ assert(link->manager);
+
+ hashmap_remove(link->manager->links, &link->ifindex);
- hashmap_remove(link->manager->links, link);
+ free(link->ifname);
free(link);
}
Network *network;
int r;
uint64_t ifindex;
+ const char *devtype;
assert(m);
assert(device);
r = link_new(m, device, &link);
if (r < 0) {
- log_error("could not create link: %s", strerror(-r));
+ log_error("Could not create link: %s", strerror(-r));
return r;
}
+ devtype = udev_device_get_devtype(device);
+ if (streq_ptr(devtype, "bridge")) {
+ r = bridge_set_link(m, link);
+ if (r < 0)
+ return r == -ENOENT ? 0 : r;
+ }
+
r = network_get(m, device, &network);
if (r < 0)
return r == -ENOENT ? 0 : r;
return 0;
}
-int link_up(Manager *manager, Link *link) {
+static int link_enter_configured(Link *link) {
+ assert(link);
+ assert(link->state == LINK_STATE_SETTING_ROUTES);
+
+ log_info("Link '%s' configured", link->ifname);
+
+ link->state = LINK_STATE_CONFIGURED;
+
+ return 0;
+}
+
+static void link_enter_failed(Link *link) {
+ assert(link);
+
+ link->state = LINK_STATE_FAILED;
+}
+
+static int route_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ Link *link = userdata;
+ int r;
+
+ assert(link->rtnl_messages > 0);
+ assert(link->state == LINK_STATE_SETTING_ROUTES || link->state == LINK_STATE_FAILED);
+
+ link->rtnl_messages --;
+
+ if (link->state == LINK_STATE_FAILED)
+ return 1;
+
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0 && r != -EEXIST)
+ log_warning("Could not set route on interface '%s': %s",
+ link->ifname, strerror(-r));
+
+ if (link->rtnl_messages == 0) {
+ log_info("Routes set for link '%s'", link->ifname);
+ link_enter_configured(link);
+ }
+
+ return 1;
+}
+
+static int link_enter_set_routes(Link *link) {
+ Route *route;
+ int r;
+
+ assert(link);
+ assert(link->network);
+ assert(link->rtnl_messages == 0);
+ assert(link->state == LINK_STATE_SETTING_ADDRESSES);
+
+ link->state = LINK_STATE_SETTING_ROUTES;
+
+ if (!link->network->static_routes)
+ return link_enter_configured(link);
+
+ LIST_FOREACH(static_routes, route, link->network->static_routes) {
+ r = route_configure(route, link, &route_handler);
+ if (r < 0) {
+ log_warning("Could not set routes for link '%s'", link->ifname);
+ link_enter_failed(link);
+ return r;
+ }
+
+ link->rtnl_messages ++;
+ }
+
+ return 0;
+}
+
+static int address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ Link *link = userdata;
+ int r;
+
+ assert(link->rtnl_messages > 0);
+ assert(link->state == LINK_STATE_SETTING_ADDRESSES || link->state == LINK_STATE_FAILED);
+
+ link->rtnl_messages --;
+
+ if (link->state == LINK_STATE_FAILED)
+ return 1;
+
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0 && r != -EEXIST)
+ log_warning("Could not set address on interface '%s': %s",
+ link->ifname, strerror(-r));
+
+ if (link->rtnl_messages == 0) {
+ log_info("Addresses set for link '%s'", link->ifname);
+ link_enter_set_routes(link);
+ }
+
+ return 1;
+}
+
+static int link_enter_set_addresses(Link *link) {
+ Address *address;
+ int r;
+
+ assert(link);
+ assert(link->network);
+ assert(link->state == LINK_STATE_JOINING_BRIDGE);
+ assert(link->rtnl_messages == 0);
+
+ link->state = LINK_STATE_SETTING_ADDRESSES;
+
+ if (!link->network->static_addresses)
+ return link_enter_set_routes(link);
+
+ LIST_FOREACH(static_addresses, address, link->network->static_addresses) {
+ r = address_configure(address, link, &address_handler);
+ if (r < 0) {
+ log_warning("Could not set addresses for link '%s'", link->ifname);
+ link_enter_failed(link);
+ return r;
+ }
+
+ link->rtnl_messages ++;
+ }
+
+ return 0;
+}
+
+static int link_up_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ Link *link = userdata;
+ int r;
+
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0) {
+ log_warning("Could not bring up interface '%s': %s",
+ link->ifname, strerror(-r));
+ link_enter_failed(link);
+ }
+
+ return 1;
+}
+
+static int link_up(Link *link) {
+ _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+ int r;
+
+ assert(link);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+
+ r = sd_rtnl_message_link_new(RTM_SETLINK, link->ifindex, &req);
+ if (r < 0) {
+ log_error("Could not allocate RTM_SETLINK message");
+ return r;
+ }
+
+ r = sd_rtnl_message_link_set_flags(req, IFF_UP);
+ if (r < 0) {
+ log_error("Could not set link flags");
+ return r;
+ }
+
+ r = sd_rtnl_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL);
+ if (r < 0) {
+ log_error("Could not send rtnetlink message: %s", strerror(-r));
+ return r;
+ }
+
+ return 0;
+}
+
+static int link_bridge_joined(Link *link) {
+ int r;
+
+ assert(link);
+ assert(link->state == LINK_STATE_JOINING_BRIDGE);
+
+ r = link_up(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+
+ r = link_enter_set_addresses(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+
+ return 0;
+}
+
+static int bridge_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ Link *link = userdata;
+ int r;
+
+ assert(link->state == LINK_STATE_JOINING_BRIDGE || link->state == LINK_STATE_FAILED);
+ assert(link->network);
+
+ if (link->state == LINK_STATE_FAILED)
+ return 1;
+
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0) {
+ log_warning("Could not join interface '%s' to bridge '%s': %s",
+ link->ifname, link->network->bridge->name, strerror(-r));
+ link_enter_failed(link);
+ return 1;
+ } else
+ log_info("Join interface '%s' to bridge: %s",
+ link->ifname, link->network->bridge->name);
+
+ link_bridge_joined(link);
+
+ return 1;
+}
+
+static int link_enter_join_bridge(Link *link) {
+ int r;
+
+ assert(link);
+ assert(link->network);
+ assert(link->state == _LINK_STATE_INVALID);
+
+ link->state = LINK_STATE_JOINING_BRIDGE;
+
+ if (!link->network->bridge)
+ return link_bridge_joined(link);
+
+ r = bridge_join(link->network->bridge, link, &bridge_handler);
+ if (r < 0) {
+ log_warning("Could not join link '%s' to bridge '%s'", link->ifname,
+ link->network->bridge->name);
+ link_enter_failed(link);
+ return r;
+ }
+
+ return 0;
+}
+
+static int link_get_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ Link *link = userdata;
+ int r;
+
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0) {
+ log_warning("Could not get state of interface '%s': %s",
+ link->ifname, strerror(-r));
+ link_enter_failed(link);
+ }
+
+ return 1;
+}
+
+static int link_get(Link *link) {
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
- r = sd_rtnl_message_link_new(RTM_NEWLINK, link->ifindex, 0, IFF_UP, &req);
+ assert(link);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+
+ r = sd_rtnl_message_link_new(RTM_GETLINK, link->ifindex, &req);
if (r < 0) {
- log_error("Could not allocate RTM_NEWLINK message");
+ log_error("Could not allocate RTM_GETLINK message");
return r;
}
- r = sd_rtnl_send_with_reply_and_block(manager->rtnl, req, 0, NULL);
+ r = sd_rtnl_call_async(link->manager->rtnl, req, link_get_handler, link, 0, NULL);
if (r < 0) {
- log_error("Could not UP link: %s", strerror(-r));
+ log_error("Could not send rtnetlink message: %s", strerror(-r));
return r;
}
- log_info("Link is UP");
+ return 0;
+}
+
+int link_configure(Link *link) {
+ int r;
+
+ assert(link);
+ assert(link->network);
+ assert(link->state == _LINK_STATE_INVALID);
+
+ r = link_get(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+
+ r = link_enter_join_bridge(link);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int link_update(Link *link, sd_rtnl_message *m) {
+ unsigned flags;
+ int r;
+
+ assert(link);
+ assert(m);
+
+ r = sd_rtnl_message_link_get_flags(m, &flags);
+ if (r < 0) {
+ log_warning("Could not get link flags of '%s'", link->ifname);
+ return r;
+ }
+
+ if (link->flags & IFF_UP && !(flags & IFF_UP))
+ log_info("Interface '%s' is down", link->ifname);
+ else if (!(link->flags & IFF_UP) && flags & IFF_UP)
+ log_info("Interface '%s' is up", link->ifname);
+
+ if (link->flags & IFF_LOWER_UP && !(flags & IFF_LOWER_UP))
+ log_info("Interface '%s' is disconnected", link->ifname);
+ else if (!(link->flags & IFF_LOWER_UP) && flags & IFF_LOWER_UP)
+ log_info("Interface '%s' is connected", link->ifname);
+
+ link->flags = flags;
return 0;
}
~ianmdlvl / elogind.git / blobdiff