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authorTom Gundersen <teg@jklm.no>2013-11-14 16:22:51 +0100
committerTom Gundersen <teg@jklm.no>2013-11-17 23:12:27 +0100
commitf882c247ad59776c3a7753bb963c1f8e2386cb79 (patch)
treefa042fb8ddef72319f7a66aa4c267fa8824c5995 /src/network/networkd-link.c
parent8cd11a0f0f4ca05199e1166f6a07472b296f7455 (diff)
networkd: make all calls async
Diffstat (limited to 'src/network/networkd-link.c')
-rw-r--r--src/network/networkd-link.c180
1 files changed, 176 insertions, 4 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index d0a3dccd9b..dcc5cfe65a 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -50,6 +50,7 @@ int link_new(Manager *manager, struct udev_device *device, Link **ret) {
memcpy(&link->mac.ether_addr_octet[0], ether_aton(mac), ETH_ALEN);
link->ifindex = ifindex;
link->manager = manager;
+ link->state = _LINK_STATE_INVALID;
r = hashmap_put(manager->links, &ifindex, link);
if (r < 0)
@@ -103,23 +104,194 @@ int link_add(Manager *m, struct udev_device *device) {
return 0;
}
-int link_up(Manager *manager, Link *link) {
+static int link_enter_configured(Link *link) {
+ log_info("Link configured successfully.");
+
+ link->state = LINK_STATE_CONFIGURED;
+
+ return 0;
+}
+
+static int link_enter_failed(Link *link) {
+ log_warning("Could not configure link.");
+
+ link->state = LINK_STATE_FAILED;
+
+ return 0;
+}
+
+static bool link_is_up(Link *link) {
+ return link->flags & IFF_UP;
+}
+
+static int link_enter_routes_set(Link *link) {
+ log_info("Routes set for link %d", link->ifindex);
+
+ if (link_is_up(link))
+ return link_enter_configured(link);
+
+ link->state = LINK_STATE_ROUTES_SET;
+
+ return 0;
+}
+
+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_SET_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 %d: %s",
+ link->ifindex, strerror(-r));
+ return link_enter_failed(link);
+ }
+
+ if (link->rtnl_messages == 0)
+ return link_enter_routes_set(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_ADDRESSES_SET);
+
+ link->state = LINK_STATE_SET_ROUTES;
+
+ if (!link->network->routes)
+ return link_enter_routes_set(link);
+
+ LIST_FOREACH(routes, route, link->network->routes) {
+ r = route_configure(route, link, &route_handler);
+ if (r < 0)
+ link_enter_failed(link);
+ }
+
+ return 0;
+}
+
+static int link_enter_addresses_set(Link *link) {
+ log_info("Addresses set for link %d", link->ifindex);
+
+ link->state = LINK_STATE_ADDRESSES_SET;
+
+ return link_enter_set_routes(link);
+}
+
+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_SET_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 %d: %s",
+ link->ifindex, strerror(-r));
+ link_enter_failed(link);
+ }
+
+ if (link->rtnl_messages == 0)
+ link_enter_addresses_set(link);
+
+ return 1;
+}
+
+static int link_enter_set_addresses(Link *link) {
+ Address *address;
+ int r;
+
+ assert(link);
+ assert(link->network);
+ assert(link->rtnl_messages == 0);
+
+ if (!link->network->addresses)
+ return link_enter_addresses_set(link);
+
+ link->state = LINK_STATE_SET_ADDRESSES;
+
+ LIST_FOREACH(addresses, address, link->network->addresses) {
+ r = address_configure(address, link, &address_handler);
+ if (r < 0)
+ link_enter_failed(link);
+ }
+
+ return 0;
+}
+
+static int link_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 %d: %s",
+ link->ifindex, strerror(-r));
+ return link_enter_failed(link);
+ }
+
+ link->flags |= IFF_UP;
+
+ log_info("Link is UP.");
+
+ if (link->state == LINK_STATE_ROUTES_SET)
+ return link_enter_configured(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_NEWLINK, link->ifindex, 0, IFF_UP, &req);
if (r < 0) {
log_error("Could not allocate RTM_NEWLINK message");
return r;
}
- r = sd_rtnl_call(manager->rtnl, req, 0, NULL);
+ r = sd_rtnl_call_async(link->manager->rtnl, req, link_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;
+
+ r = link_up(link);
+ if (r < 0)
+ return link_enter_failed(link);
+
+ r = link_enter_set_addresses(link);
+ if (r < 0)
+ return link_enter_failed(link);
return 0;
}