--- /dev/null
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <linux/if_bridge.h>
+#include <net/ethernet.h>
+#include <net/if.h>
+
+#include "alloc-util.h"
+#include "netlink-util.h"
+#include "networkd-manager.h"
+#include "networkd-mdb.h"
+#include "util.h"
+#include "vlan-util.h"
+
+#define STATIC_MDB_ENTRIES_PER_NETWORK_MAX 1024U
+
+/* create a new MDB entry or get an existing one. */
+static int mdb_entry_new_static(
+ Network *network,
+ const char *filename,
+ unsigned section_line,
+ MdbEntry **ret) {
+
+ _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
+ _cleanup_(mdb_entry_freep) MdbEntry *mdb_entry = NULL;
+ int r;
+
+ assert(network);
+ assert(ret);
+ assert(!!filename == (section_line > 0));
+
+ /* search entry in hashmap first. */
+ if (filename) {
+ r = network_config_section_new(filename, section_line, &n);
+ if (r < 0)
+ return r;
+
+ mdb_entry = hashmap_get(network->mdb_entries_by_section, n);
+ if (mdb_entry) {
+ *ret = TAKE_PTR(mdb_entry);
+ return 0;
+ }
+ }
+
+ if (network->n_static_mdb_entries >= STATIC_MDB_ENTRIES_PER_NETWORK_MAX)
+ return -E2BIG;
+
+ /* allocate space for an MDB entry. */
+ mdb_entry = new(MdbEntry, 1);
+ if (!mdb_entry)
+ return -ENOMEM;
+
+ /* init MDB structure. */
+ *mdb_entry = (MdbEntry) {
+ .network = network,
+ };
+
+ LIST_PREPEND(static_mdb_entries, network->static_mdb_entries, mdb_entry);
+ network->n_static_mdb_entries++;
+
+ if (filename) {
+ mdb_entry->section = TAKE_PTR(n);
+
+ r = hashmap_ensure_allocated(&network->mdb_entries_by_section, &network_config_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = hashmap_put(network->mdb_entries_by_section, mdb_entry->section, mdb_entry);
+ if (r < 0)
+ return r;
+ }
+
+ /* return allocated MDB structure. */
+ *ret = TAKE_PTR(mdb_entry);
+
+ return 0;
+}
+
+/* parse the VLAN Id from config files. */
+int config_parse_mdb_vlan_id(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Network *network = userdata;
+ _cleanup_(mdb_entry_free_or_set_invalidp) MdbEntry *mdb_entry = NULL;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = mdb_entry_new_static(network, filename, section_line, &mdb_entry);
+ if (r < 0)
+ return log_oom();
+
+ r = config_parse_vlanid(unit, filename, line, section,
+ section_line, lvalue, ltype,
+ rvalue, &mdb_entry->vlan_id, userdata);
+ if (r < 0)
+ return r;
+
+ mdb_entry = NULL;
+
+ return 0;
+}
+
+/* parse the multicast group from config files. */
+int config_parse_mdb_group_address(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Network *network = userdata;
+ _cleanup_(mdb_entry_free_or_set_invalidp) MdbEntry *mdb_entry = NULL;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = mdb_entry_new_static(network, filename, section_line, &mdb_entry);
+ if (r < 0)
+ return log_oom();
+
+ r = in_addr_from_string_auto(rvalue, &mdb_entry->family, &mdb_entry->group_addr);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Cannot parse multicast group address: %m");
+ return 0;
+ }
+
+ mdb_entry = NULL;
+
+ return 0;
+}
+
+/* remove and MDB entry. */
+MdbEntry *mdb_entry_free(MdbEntry *mdb_entry) {
+ if (!mdb_entry)
+ return NULL;
+
+ if (mdb_entry->network) {
+ LIST_REMOVE(static_mdb_entries, mdb_entry->network->static_mdb_entries, mdb_entry);
+ assert(mdb_entry->network->n_static_mdb_entries > 0);
+ mdb_entry->network->n_static_mdb_entries--;
+
+ if (mdb_entry->section)
+ hashmap_remove(mdb_entry->network->mdb_entries_by_section, mdb_entry->section);
+ }
+
+ network_config_section_free(mdb_entry->section);
+
+ return mfree(mdb_entry);
+}
+
+static int set_mdb_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
+ int r;
+
+ assert(link);
+
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return 1;
+
+ r = sd_netlink_message_get_errno(m);
+ if (r < 0 && r != -EEXIST) {
+ log_link_message_warning_errno(link, m, r, "Could not add MDB entry");
+ link_enter_failed(link);
+ return 1;
+ }
+
+ return 1;
+}
+
+int mdb_entry_verify(MdbEntry *mdb_entry) {
+ if (section_is_invalid(mdb_entry->section))
+ return -EINVAL;
+
+ if (in_addr_is_multicast(mdb_entry->family, &mdb_entry->group_addr) <= 0) {
+ log_error("No valid MulticastGroupAddress= assignment in this section");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* send a request to the kernel to add an MDB entry */
+int mdb_entry_configure(Link *link, MdbEntry *mdb_entry) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
+ struct br_mdb_entry entry;
+ int r;
+
+ assert(link);
+ assert(link->network);
+ assert(link->manager);
+ assert(mdb_entry);
+
+ entry = (struct br_mdb_entry) {
+ .state = MDB_PERMANENT,
+ .ifindex = link->ifindex,
+ .vid = mdb_entry->vlan_id,
+ };
+
+ /* create new RTM message */
+ r = sd_rtnl_message_new_mdb(link->manager->rtnl, &req, RTM_NEWMDB, link->network->bridge->ifindex);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not create RTM_NEWMDB message: %m");
+
+ switch (mdb_entry->family) {
+ case AF_INET:
+ entry.addr.u.ip4 = mdb_entry->group_addr.in.s_addr;
+ entry.addr.proto = htobe16(ETH_P_IP);
+ break;
+
+ case AF_INET6:
+ entry.addr.u.ip6 = mdb_entry->group_addr.in6;
+ entry.addr.proto = htobe16(ETH_P_IPV6);
+ break;
+
+ default:
+ assert_not_reached("Invalid address family");
+ }
+
+ r = sd_netlink_message_append_data(req, MDBA_SET_ENTRY, &entry, sizeof(entry));
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append MDBA_SET_ENTRY attribute: %m");
+
+ r = netlink_call_async(link->manager->rtnl, NULL, req, set_mdb_handler,
+ link_netlink_destroy_callback, link);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
+
+ link_ref(link);
+
+ return 1;
+}
Prefix *prefix, *prefix_next;
Route *route, *route_next;
FdbEntry *fdb, *fdb_next;
+ MdbEntry *mdb, *mdb_next;
TrafficControl *tc;
SRIOV *sr_iov;
if (section_is_invalid(fdb->section))
fdb_entry_free(fdb);
+ LIST_FOREACH_SAFE(static_mdb_entries, mdb, mdb_next, network->static_mdb_entries)
+ if (mdb_entry_verify(mdb) < 0)
+ mdb_entry_free(mdb);
+
LIST_FOREACH_SAFE(neighbors, neighbor, neighbor_next, network->neighbors)
if (neighbor_section_verify(neighbor) < 0)
neighbor_free(neighbor);
"IPv6NDPProxyAddress\0"
"Bridge\0"
"BridgeFDB\0"
+ "BridgeMDB\0"
"BridgeVLAN\0"
"IPv6PrefixDelegation\0"
"IPv6Prefix\0"
RoutingPolicyRule *rule;
AddressLabel *label;
FdbEntry *fdb_entry;
+ MdbEntry *mdb_entry;
Neighbor *neighbor;
Address *address;
NextHop *nexthop;
while ((fdb_entry = network->static_fdb_entries))
fdb_entry_free(fdb_entry);
+ while ((mdb_entry = network->static_mdb_entries))
+ mdb_entry_free(mdb_entry);
+
while ((ipv6_proxy_ndp_address = network->ipv6_proxy_ndp_addresses))
ipv6_proxy_ndp_address_free(ipv6_proxy_ndp_address);
hashmap_free(network->routes_by_section);
hashmap_free(network->nexthops_by_section);
hashmap_free(network->fdb_entries_by_section);
+ hashmap_free(network->mdb_entries_by_section);
hashmap_free(network->neighbors_by_section);
hashmap_free(network->address_labels_by_section);
hashmap_free(network->prefixes_by_section);
Address *address;
Route *route;
FdbEntry *fdb;
+ MdbEntry *mdb;
Neighbor *neighbor;
assert(network);
if (fdb->family == AF_INET6)
return true;
+ LIST_FOREACH(static_mdb_entries, mdb, network->static_mdb_entries)
+ if (mdb->family == AF_INET6)
+ return true;
+
LIST_FOREACH(neighbors, neighbor, network->neighbors)
if (neighbor->family == AF_INET6)
return true;
#include "networkd-ipv6-proxy-ndp.h"
#include "networkd-lldp-rx.h"
#include "networkd-lldp-tx.h"
+#include "networkd-mdb.h"
#include "networkd-ndisc.h"
#include "networkd-neighbor.h"
#include "networkd-nexthop.h"
LIST_HEAD(Route, static_routes);
LIST_HEAD(NextHop, static_nexthops);
LIST_HEAD(FdbEntry, static_fdb_entries);
+ LIST_HEAD(MdbEntry, static_mdb_entries);
LIST_HEAD(IPv6ProxyNDPAddress, ipv6_proxy_ndp_addresses);
LIST_HEAD(Neighbor, neighbors);
LIST_HEAD(AddressLabel, address_labels);
unsigned n_static_routes;
unsigned n_static_nexthops;
unsigned n_static_fdb_entries;
+ unsigned n_static_mdb_entries;
unsigned n_ipv6_proxy_ndp_addresses;
unsigned n_neighbors;
unsigned n_address_labels;
Hashmap *routes_by_section;
Hashmap *nexthops_by_section;
Hashmap *fdb_entries_by_section;
+ Hashmap *mdb_entries_by_section;
Hashmap *neighbors_by_section;
Hashmap *address_labels_by_section;
Hashmap *prefixes_by_section;
projects / thirdparty / systemd.git / commitdiff
