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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <net/if.h>
#include <net/if_arp.h>
#include "sd-lldp-tx.h"
#include "networkd-link.h"
#include "networkd-lldp-tx.h"
#include "networkd-manager.h"
#include "networkd-sysctl.h"
#include "parse-util.h"
#include "string-table.h"
#include "string-util.h"
#include "strv.h"
static bool link_lldp_tx_enabled(Link *link) {
assert(link);
if (link->flags & IFF_LOOPBACK)
return false;
if (link->iftype != ARPHRD_ETHER)
return false;
if (!link->network)
return false;
if (link->kind && STR_IN_SET(link->kind, "bridge", "bond"))
return false;
return link->network->lldp_multicast_mode >= 0 &&
link->network->lldp_multicast_mode < _SD_LLDP_MULTICAST_MODE_MAX;
}
int link_lldp_tx_configure(Link *link) {
int r;
assert(link);
if (!link_lldp_tx_enabled(link))
return 0;
if (link->lldp_tx)
return -EBUSY;
r = sd_lldp_tx_new(&link->lldp_tx);
if (r < 0)
return r;
r = sd_lldp_tx_attach_event(link->lldp_tx, link->manager->event, 0);
if (r < 0)
return r;
r = sd_lldp_tx_set_ifindex(link->lldp_tx, link->ifindex);
if (r < 0)
return r;
r = sd_lldp_tx_set_hwaddr(link->lldp_tx, &link->hw_addr.ether);
if (r < 0)
return r;
assert(link->network);
r = sd_lldp_tx_set_multicast_mode(link->lldp_tx, link->network->lldp_multicast_mode);
if (r < 0)
return r;
r = sd_lldp_tx_set_capabilities(link->lldp_tx,
SD_LLDP_SYSTEM_CAPABILITIES_STATION |
SD_LLDP_SYSTEM_CAPABILITIES_BRIDGE |
SD_LLDP_SYSTEM_CAPABILITIES_ROUTER,
(link_get_ip_forwarding(link, AF_INET) > 0 || link_get_ip_forwarding(link, AF_INET6) > 0) ?
SD_LLDP_SYSTEM_CAPABILITIES_ROUTER : SD_LLDP_SYSTEM_CAPABILITIES_STATION);
if (r < 0)
return r;
r = sd_lldp_tx_set_port_description(link->lldp_tx, link->network->description);
if (r < 0)
return r;
r = sd_lldp_tx_set_mud_url(link->lldp_tx, link->network->lldp_mudurl);
if (r < 0)
return r;
return 0;
}
static const char * const lldp_multicast_mode_table[_SD_LLDP_MULTICAST_MODE_MAX] = {
[SD_LLDP_MULTICAST_MODE_NEAREST_BRIDGE] = "nearest-bridge",
[SD_LLDP_MULTICAST_MODE_NON_TPMR_BRIDGE] = "non-tpmr-bridge",
[SD_LLDP_MULTICAST_MODE_CUSTOMER_BRIDGE] = "customer-bridge",
};
DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(lldp_multicast_mode, sd_lldp_multicast_mode_t);
int config_parse_lldp_multicast_mode(
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) {
sd_lldp_multicast_mode_t m, *mode = ASSERT_PTR(data);
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
*mode = _SD_LLDP_MULTICAST_MODE_INVALID;
return 0;
}
r = parse_boolean(rvalue);
if (r >= 0) {
*mode = r == 0 ? _SD_LLDP_MULTICAST_MODE_INVALID : SD_LLDP_MULTICAST_MODE_NEAREST_BRIDGE;
return 0;
}
m = lldp_multicast_mode_from_string(rvalue);
if (m < 0) {
log_syntax(unit, LOG_WARNING, filename, line, m,
"Failed to parse %s=, ignoring assignment: %s", lvalue, rvalue);
return 0;
}
*mode = m;
return 0;
}
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