+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright (C) 2014 Intel Corporation. All rights reserved.
-
- 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 <net/if.h>
-#include <net/ethernet.h>
-
-#include "networkd.h"
-#include "networkd-link.h"
-#include "conf-parser.h"
-#include "util.h"
-
-/* create a new FDB entry or get an existing one. */
-int fdb_entry_new_static(Network *const network,
- const unsigned section,
- FdbEntry **ret) {
- _cleanup_fdbentry_free_ FdbEntry *fdb_entry = NULL;
- struct ether_addr *mac_addr = NULL;
-
- assert(network);
-
- /* search entry in hashmap first. */
- if(section) {
- fdb_entry = hashmap_get(network->fdb_entries_by_section, UINT_TO_PTR(section));
- if (fdb_entry) {
- *ret = fdb_entry;
- fdb_entry = NULL;
-
- return 0;
- }
- }
-
- /* allocate space for MAC address. */
- mac_addr = new0(struct ether_addr, 1);
- if (!mac_addr)
- return -ENOMEM;
-
- /* allocate space for and FDB entry. */
- fdb_entry = new0(FdbEntry, 1);
-
- if (!fdb_entry) {
- /* free previously allocated space for mac_addr. */
- free(mac_addr);
- return -ENOMEM;
- }
-
- /* init FDB structure. */
- fdb_entry->network = network;
- fdb_entry->mac_addr = mac_addr;
-
- LIST_PREPEND(static_fdb_entries, network->static_fdb_entries, fdb_entry);
-
- if (section) {
- fdb_entry->section = section;
- hashmap_put(network->fdb_entries_by_section,
- UINT_TO_PTR(fdb_entry->section), fdb_entry);
- }
-
- /* return allocated FDB structure. */
- *ret = fdb_entry;
- fdb_entry = NULL;
-
- return 0;
-}
-
-static int set_fdb_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
- int r;
-
- assert(link);
-
- r = sd_rtnl_message_get_errno(m);
- if (r < 0 && r != -EEXIST)
- log_link_error(link, "Could not add FDB entry: %s", strerror(-r));
-
- return 1;
-}
-
-/* send a request to the kernel to add a FDB entry in its static MAC table. */
-int fdb_entry_configure(Link *const link, FdbEntry *const fdb_entry) {
- _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
- sd_rtnl *rtnl;
- int r;
-
- assert(link);
- assert(link->manager);
- assert(fdb_entry);
-
- rtnl = link->manager->rtnl;
-
- /* create new RTM message */
- r = sd_rtnl_message_new_neigh(rtnl, &req, RTM_NEWNEIGH, link->ifindex, PF_BRIDGE);
- if (r < 0)
- return rtnl_log_create_error(r);
-
- /* only NTF_SELF flag supported. */
- r = sd_rtnl_message_neigh_set_flags(req, NTF_SELF);
- if (r < 0)
- return rtnl_log_create_error(r);
-
- /* only NUD_PERMANENT state supported. */
- r = sd_rtnl_message_neigh_set_state(req, NUD_NOARP | NUD_PERMANENT);
- if (r < 0)
- return rtnl_log_create_error(r);
-
- r = sd_rtnl_message_append_ether_addr(req, NDA_LLADDR, fdb_entry->mac_addr);
- if (r < 0)
- return rtnl_log_create_error(r);
-
- /* VLAN Id is optional. We'll add VLAN Id only if it's specified. */
- if (0 != fdb_entry->vlan_id) {
- r = sd_rtnl_message_append_u16(req, NDA_VLAN, fdb_entry->vlan_id);
- if (r < 0)
- return rtnl_log_create_error(r);
- }
-
- /* send message to the kernel to update its internal static MAC table. */
- r = sd_rtnl_call_async(rtnl, req, set_fdb_handler, link, 0, NULL);
- if (r < 0) {
- log_link_error(link, "Could not send rtnetlink message: %s", strerror(-r));
- return r;
- }
-
- return 0;
-}
-
-/* remove and FDB entry. */
-void fdb_entry_free(FdbEntry *fdb_entry) {
- if(!fdb_entry)
- return;
-
- if(fdb_entry->network) {
- LIST_REMOVE(static_fdb_entries, fdb_entry->network->static_fdb_entries,
- fdb_entry);
-
- if(fdb_entry->section)
- hashmap_remove(fdb_entry->network->fdb_entries_by_section,
- UINT_TO_PTR(fdb_entry->section));
- }
-
- free(fdb_entry->mac_addr);
-
- free(fdb_entry);
-}
-
-/* parse the HW address from config files. */
-int config_parse_fdb_hwaddr(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_fdbentry_free_ FdbEntry *fdb_entry = NULL;
- int r;
-
- assert(filename);
- assert(section);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- r = fdb_entry_new_static(network, section_line, &fdb_entry);
- if (r < 0) {
- log_error("Failed to allocate a new FDB entry: %s", strerror(-r));
- return r;
- }
-
- /* read in the MAC address for the FDB table. */
- r = sscanf(rvalue, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
- &fdb_entry->mac_addr->ether_addr_octet[0],
- &fdb_entry->mac_addr->ether_addr_octet[1],
- &fdb_entry->mac_addr->ether_addr_octet[2],
- &fdb_entry->mac_addr->ether_addr_octet[3],
- &fdb_entry->mac_addr->ether_addr_octet[4],
- &fdb_entry->mac_addr->ether_addr_octet[5]);
-
- if (ETHER_ADDR_LEN != r) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Not a valid MAC address, ignoring assignment: %s", rvalue);
- return 0;
- }
-
- fdb_entry = NULL;
-
- return 0;
-}
-
-/* parse the VLAN Id from config files. */
-int config_parse_fdb_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_fdbentry_free_ FdbEntry *fdb_entry = NULL;
- int r;
-
- assert(filename);
- assert(section);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- r = fdb_entry_new_static(network, section_line, &fdb_entry);
- if (r < 0) {
- log_error("Failed to allocate a new FDB entry: %s", strerror(-r));
- return r;
- }
-
- r = config_parse_unsigned(unit, filename, line, section,
- section_line, lvalue, ltype,
- rvalue, &fdb_entry->vlan_id, userdata);
- if (r < 0) {
- log_error("Failed to parse the unsigned integer: %s", strerror(-r));
- return r;
- }
-
- fdb_entry = NULL;
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff