void
ind_ovs_port_init(void)
{
int nlerr;
route_cache_sock = nl_socket_alloc();
if (route_cache_sock == NULL) {
LOG_ERROR("nl_socket_alloc failed");
abort();
}
if ((nlerr = nl_cache_mngr_alloc(route_cache_sock, NETLINK_ROUTE,
0, &route_cache_mngr)) < 0) {
LOG_ERROR("nl_cache_mngr_alloc failed: %s", nl_geterror(nlerr));
abort();
}
if ((nlerr = nl_cache_mngr_add(route_cache_mngr, "route/link", link_change_cb, NULL, &link_cache)) < 0) {
LOG_ERROR("nl_cache_mngr_add failed: %s", nl_geterror(nlerr));
abort();
}
if (ind_soc_socket_register(nl_cache_mngr_get_fd(route_cache_mngr),
(ind_soc_socket_ready_callback_f)route_cache_mngr_socket_cb,
NULL) < 0) {
LOG_ERROR("failed to register socket");
abort();
}
netlink_callbacks = nl_cb_alloc(NL_CB_DEFAULT);
if (netlink_callbacks == NULL) {
LOG_ERROR("failed to allocate netlink callbacks");
abort();
}
}
void
ind_ovs_port_finish(void)
{
ind_soc_socket_unregister(nl_cache_mngr_get_fd(route_cache_mngr));
nl_cache_mngr_free(route_cache_mngr);
nl_socket_free(route_cache_sock);
}
NetlinkPoller::NetlinkPoller(
folly::EventBase* eb,
int fd,
struct nl_cache_mngr* manager)
: folly::EventHandler(eb, fd), manager_(manager) {
DCHECK(eb) << "NULL pointer to EventBase";
if (fd == -1) {
int mngrFd = nl_cache_mngr_get_fd(manager);
changeHandlerFD(mngrFd);
}
registerHandler(folly::EventHandler::READ | folly::EventHandler::PERSIST);
}
GWaterNlSource *
g_water_nl_source_new_for_cache_mngr(GMainContext *context, struct nl_cache_mngr *cache_mngr)
{
g_return_val_if_fail(cache_mngr != NULL, NULL);
GSource *source;
GWaterNlSource *self;
source = g_source_new(&_g_water_nl_source_funcs, sizeof(GWaterNlSource));
self = (GWaterNlSource *)source;
self->cache_mngr = cache_mngr;
self->fd = g_source_add_unix_fd(source, nl_cache_mngr_get_fd(self->cache_mngr), G_IO_IN | G_IO_ERR | G_IO_HUP);
g_source_attach(source, context);
return self;
}
void NetlinkManager::startListening() {
int fd = nl_cache_mngr_get_fd(nlResources_->manager);
poller_ = std::make_unique<NetlinkPoller>(eb_, fd, nlResources_->manager);
}