+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2013 Tom Gundersen <teg@jklm.no>
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include "networkd.h"
-#include "net-util.h"
-#include "path-util.h"
-#include "conf-files.h"
-#include "conf-parser.h"
-#include "list.h"
-
-void bridge_free(Bridge *bridge) {
- bridge_join_callback *callback;
-
- if (!bridge)
- return;
-
- while ((callback = bridge->callbacks)) {
- LIST_REMOVE(callbacks, bridge->callbacks, callback);
- free(callback);
- }
-
- if (bridge->name)
- hashmap_remove(bridge->manager->bridges, bridge->name);
-
- free(bridge->filename);
-
- free(bridge->description);
- free(bridge->name);
-
- free(bridge);
-}
-
-int bridge_get(Manager *manager, const char *name, Bridge **ret) {
- Bridge *bridge;
-
- assert(manager);
- assert(name);
- assert(ret);
-
- bridge = hashmap_get(manager->bridges, name);
- if (!bridge) {
- *ret = NULL;
- return -ENOENT;
- }
-
- *ret = bridge;
-
- return 0;
-}
-
-static int bridge_enter_failed(Bridge *bridge) {
- bridge->state = BRIDGE_STATE_FAILED;
-
- return 0;
-}
-
-static int bridge_join_ready(Bridge *bridge, Link* link, sd_rtnl_message_handler_t callback) {
- _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
- int r;
-
- assert(bridge);
- assert(bridge->state == BRIDGE_STATE_READY);
- assert(link);
- assert(callback);
-
- r = sd_rtnl_message_link_new(RTM_SETLINK, link->ifindex, &req);
- if (r < 0) {
- log_error_bridge(bridge,
- "Could not allocate RTM_SETLINK message: %s",
- strerror(-r));
- return r;
- }
-
- r = sd_rtnl_message_append_u32(req, IFLA_MASTER, bridge->link->ifindex);
- if (r < 0) {
- log_error_bridge(bridge,
- "Could not append IFLA_MASTER attribute: %s",
- strerror(-r));
- return r;
- }
-
- r = sd_rtnl_call_async(bridge->manager->rtnl, req, callback, link, 0, NULL);
- if (r < 0) {
- log_error_bridge(bridge,
- "Could not send rtnetlink message: %s",
- strerror(-r));
- return r;
- }
-
- log_debug_bridge(bridge, "joining link %s to bridge", link->ifname);
-
- return 0;
-}
-
-static int bridge_enter_ready(Bridge *bridge) {
- bridge_join_callback *callback;
-
- assert(bridge);
- assert(bridge->name);
-
- bridge->state = BRIDGE_STATE_READY;
-
- log_info_bridge(bridge, "bridge ready");
-
- LIST_FOREACH(callbacks, callback, bridge->callbacks) {
- /* join the links that were attempted to be joined befor the
- * link was ready */
- bridge_join_ready(bridge, callback->link, callback->callback);
- }
-
- return 0;
-}
-
-static int bridge_create_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Bridge *bridge = userdata;
- int r;
-
- assert(bridge->state != _BRIDGE_STATE_INVALID);
-
- r = sd_rtnl_message_get_errno(m);
- if (r < 0) {
- log_warning_bridge(bridge, "bridge failed: %s", strerror(-r));
- bridge_enter_failed(bridge);
-
- return 1;
- }
-
- return 1;
-}
-
-static int bridge_create(Bridge *bridge) {
- _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
- int r;
-
- assert(bridge);
- assert(bridge->state == _BRIDGE_STATE_INVALID);
- assert(bridge->name);
- assert(bridge->manager);
- assert(bridge->manager->rtnl);
-
- r = sd_rtnl_message_link_new(RTM_NEWLINK, 0, &req);
- if (r < 0) {
- log_error_bridge(bridge,
- "Could not allocate RTM_NEWLINK message: %s",
- strerror(-r));
- return r;
- }
-
- r = sd_rtnl_message_append_string(req, IFLA_IFNAME, bridge->name);
- if (r < 0) {
- log_error_bridge(bridge,
- "Could not append IFLA_IFNAME attribute: %s",
- strerror(-r));
- return r;
- }
-
- r = sd_rtnl_message_open_container(req, IFLA_LINKINFO);
- if (r < 0) {
- log_error_bridge(bridge,
- "Could not open IFLA_LINKINFO container: %s",
- strerror(-r));
- return r;
- }
-
- r = sd_rtnl_message_append_string(req, IFLA_INFO_KIND, "bridge");
- if (r < 0) {
- log_error_bridge(bridge,
- "Could not append IFLA_INFO_KIND attribute: %s",
- strerror(-r));
- return r;
- }
-
- r = sd_rtnl_message_close_container(req);
- if (r < 0) {
- log_error_bridge(bridge,
- "Could not close IFLA_LINKINFO container %s",
- strerror(-r));
- return r;
- }
-
- r = sd_rtnl_call_async(bridge->manager->rtnl, req, &bridge_create_handler, bridge, 0, NULL);
- if (r < 0) {
- log_error_bridge(bridge,
- "Could not send rtnetlink message: %s", strerror(-r));
- return r;
- }
-
- log_debug_bridge(bridge, "creating bridge");
-
- bridge->state = BRIDGE_STATE_CREATING;
-
- return 0;
-}
-
-int bridge_join(Bridge *bridge, Link *link, sd_rtnl_message_handler_t callback) {
- if (bridge->state == BRIDGE_STATE_READY) {
- bridge_join_ready(bridge, link, callback);
- } else {
- /* the bridge is not yet read, save this request for when it is*/
- bridge_join_callback *cb;
-
- cb = new0(bridge_join_callback, 1);
- if (!cb)
- return log_oom();
-
- cb->callback = callback;
- cb->link = link;
-
- LIST_PREPEND(callbacks, bridge->callbacks, cb);
- }
-
- return 0;
-}
-
-int bridge_set_link(Manager *m, Link *link) {
- Bridge *bridge;
- int r;
-
- r = bridge_get(m, link->ifname, &bridge);
- if (r < 0)
- return r;
-
- if (bridge->link && bridge->link != link)
- return -EEXIST;
-
- bridge->link = link;
-
- bridge_enter_ready(bridge);
-
- return 0;
-}
-
-static int bridge_load_one(Manager *manager, const char *filename) {
- _cleanup_bridge_free_ Bridge *bridge = NULL;
- _cleanup_fclose_ FILE *file = NULL;
- int r;
-
- assert(manager);
- assert(filename);
-
- file = fopen(filename, "re");
- if (!file) {
- if (errno == ENOENT)
- return 0;
- else
- return errno;
- }
-
- bridge = new0(Bridge, 1);
- if (!bridge)
- return log_oom();
-
- bridge->manager = manager;
- bridge->state = _BRIDGE_STATE_INVALID;
-
- r = config_parse(NULL, filename, file, "Bridge\0", config_item_perf_lookup,
- (void*) network_gperf_lookup, false, false, bridge);
- if (r < 0) {
- log_warning("Could not parse config file %s: %s", filename, strerror(-r));
- return r;
- }
-
- if (!bridge->name) {
- log_warning("Bridge without Name configured in %s. Ignoring", filename);
- return 0;
- }
-
- bridge->filename = strdup(filename);
- if (!bridge->filename)
- return log_oom();
-
- r = hashmap_put(bridge->manager->bridges, bridge->name, bridge);
- if (r < 0)
- return r;
-
- LIST_HEAD_INIT(bridge->callbacks);
-
- r = bridge_create(bridge);
- if (r < 0)
- return r;
-
- bridge = NULL;
-
- return 0;
-}
-
-int bridge_load(Manager *manager) {
- Bridge *bridge;
- char **files, **f;
- int r;
-
- assert(manager);
-
- while ((bridge = hashmap_first(manager->bridges)))
- bridge_free(bridge);
-
- r = conf_files_list_strv(&files, ".netdev", NULL, network_dirs);
- if (r < 0) {
- log_error("Failed to enumerate netdev files: %s", strerror(-r));
- return r;
- }
-
- STRV_FOREACH_BACKWARDS(f, files) {
- r = bridge_load_one(manager, *f);
- if (r < 0)
- return r;
- }
-
- strv_free(files);
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff