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authorTom Gundersen <teg@jklm.no>2016-11-28 20:42:40 +0100
committerLennart Poettering <lennart@poettering.net>2016-11-28 20:42:40 +0100
commitb76d99d9e66f965b79dade55ab719d54a17e709c (patch)
treee0d45453cbd3ad9c958de54d040d614ea5e88f35 /src/network
parentdc3b8afb93f188f212218487ab62fd3f12a2b58f (diff)
networkd: move event loop handling out of the manager (#4723)
This will allow us to have several managers sharing an event loop and running in parallel, as if they were running in separate processes. The long term-aim is to allow networkd to be split into separate processes, so restructure the code to make this simpler. For now we drop the exit-on-idle logic, as this was anyway severely restricted at the moment. Once split, we will revisit this as it may then make more sense again.
Diffstat (limited to 'src/network')
-rw-r--r--src/network/networkd-manager.c52
-rw-r--r--src/network/networkd-manager.h4
-rw-r--r--src/network/networkd.c23
-rw-r--r--src/network/test-network.c11
4 files changed, 35 insertions, 55 deletions
diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c
index 4e3f9e35c6..ea1c320809 100644
--- a/src/network/networkd-manager.c
+++ b/src/network/networkd-manager.c
@@ -1042,7 +1042,7 @@ static int manager_dirty_handler(sd_event_source *s, void *userdata) {
return 1;
}
-int manager_new(Manager **ret) {
+int manager_new(Manager **ret, sd_event *event) {
_cleanup_manager_free_ Manager *m = NULL;
int r;
@@ -1054,14 +1054,7 @@ int manager_new(Manager **ret) {
if (!m->state_file)
return -ENOMEM;
- r = sd_event_default(&m->event);
- if (r < 0)
- return r;
-
- sd_event_set_watchdog(m->event, true);
-
- sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
- sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
+ m->event = sd_event_ref(event);
r = sd_event_add_post(m->event, NULL, manager_dirty_handler, m);
if (r < 0)
@@ -1137,33 +1130,7 @@ void manager_free(Manager *m) {
free(m);
}
-static bool manager_check_idle(void *userdata) {
- Manager *m = userdata;
- Link *link;
- Iterator i;
-
- assert(m);
-
- /* Check whether we are idle now. The only case when we decide to be idle is when there's only a loopback
- * device around, for which we have no configuration, and which already left the PENDING state. In all other
- * cases we are not idle. */
-
- HASHMAP_FOREACH(link, m->links, i) {
- /* We are not woken on udev activity, so let's just wait for the pending udev event */
- if (link->state == LINK_STATE_PENDING)
- return false;
-
- if ((link->flags & IFF_LOOPBACK) == 0)
- return false;
-
- if (link->network)
- return false;
- }
-
- return true;
-}
-
-int manager_run(Manager *m) {
+int manager_start(Manager *m) {
Link *link;
Iterator i;
@@ -1177,18 +1144,7 @@ int manager_run(Manager *m) {
HASHMAP_FOREACH(link, m->links, i)
link_save(link);
- if (m->bus)
- return bus_event_loop_with_idle(
- m->event,
- m->bus,
- "org.freedesktop.network1",
- DEFAULT_EXIT_USEC,
- manager_check_idle,
- m);
- else
- /* failed to connect to the bus, so we lose exit-on-idle logic,
- this should not happen except if dbus is not around at all */
- return sd_event_loop(m->event);
+ return 0;
}
int manager_load_config(Manager *m) {
diff --git a/src/network/networkd-manager.h b/src/network/networkd-manager.h
index c81f5057b7..e2447c2230 100644
--- a/src/network/networkd-manager.h
+++ b/src/network/networkd-manager.h
@@ -76,11 +76,11 @@ static inline const DUID* link_duid(const Link *link) {
extern const sd_bus_vtable manager_vtable[];
-int manager_new(Manager **ret);
+int manager_new(Manager **ret, sd_event *event);
void manager_free(Manager *m);
int manager_connect_bus(Manager *m);
-int manager_run(Manager *m);
+int manager_start(Manager *m);
int manager_load_config(Manager *m);
bool manager_should_reload(Manager *m);
diff --git a/src/network/networkd.c b/src/network/networkd.c
index 2851432eff..fe60f1ed14 100644
--- a/src/network/networkd.c
+++ b/src/network/networkd.c
@@ -18,6 +18,7 @@
***/
#include "sd-daemon.h"
+#include "sd-event.h"
#include "capability-util.h"
#include "networkd-conf.h"
@@ -26,6 +27,7 @@
#include "user-util.h"
int main(int argc, char *argv[]) {
+ sd_event *event = NULL;
_cleanup_manager_free_ Manager *m = NULL;
const char *user = "systemd-network";
uid_t uid;
@@ -78,7 +80,15 @@ int main(int argc, char *argv[]) {
assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
- r = manager_new(&m);
+ r = sd_event_default(&event);
+ if (r < 0)
+ goto out;
+
+ sd_event_set_watchdog(event, true);
+ sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
+ sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
+
+ r = manager_new(&m, event);
if (r < 0) {
log_error_errno(r, "Could not create manager: %m");
goto out;
@@ -118,22 +128,29 @@ int main(int argc, char *argv[]) {
goto out;
}
+ r = manager_start(m);
+ if (r < 0) {
+ log_error_errno(r, "Could not start manager: %m");
+ goto out;
+ }
+
log_info("Enumeration completed");
sd_notify(false,
"READY=1\n"
"STATUS=Processing requests...");
- r = manager_run(m);
+ r = sd_event_loop(event);
if (r < 0) {
log_error_errno(r, "Event loop failed: %m");
goto out;
}
-
out:
sd_notify(false,
"STOPPING=1\n"
"STATUS=Shutting down...");
+ sd_event_unref(event);
+
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
diff --git a/src/network/test-network.c b/src/network/test-network.c
index 93184a7f88..64d2f23fc1 100644
--- a/src/network/test-network.c
+++ b/src/network/test-network.c
@@ -186,6 +186,7 @@ static void test_address_equality(void) {
int main(void) {
_cleanup_manager_free_ Manager *manager = NULL;
+ sd_event *event;
struct udev *udev;
struct udev_device *loopback;
int r;
@@ -194,11 +195,16 @@ int main(void) {
test_deserialize_dhcp_routes();
test_address_equality();
- assert_se(manager_new(&manager) >= 0);
+ r = sd_event_default(&event);
+ assert_se(r >= 0);
+
+ assert_se(manager_new(&manager, event) >= 0);
r = test_load_config(manager);
- if (r == -EPERM)
+ if (r == -EPERM) {
+ sd_event_unref(event);
return EXIT_TEST_SKIP;
+ }
udev = udev_new();
assert_se(udev);
@@ -213,4 +219,5 @@ int main(void) {
udev_device_unref(loopback);
udev_unref(udev);
+ sd_event_unref(event);
}