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3976c43092
This deprecates IPForward= setting, which unconditionally controled the global setting, even though it is a setting in .network file. Instead, this introduces new IPv4Forwarding= and IPv6Forwarding= settings both in .network and networkd.conf. If these settings are specified in a .network file, then the per-interface forwarding setting will be configured. If specified in networkd.conf, then the global IP forwarding setting will be configured. Closes #30648.
138 lines
4.0 KiB
C
138 lines
4.0 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <net/if.h>
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#include <net/if_arp.h>
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#include "sd-lldp-tx.h"
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#include "networkd-link.h"
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#include "networkd-lldp-tx.h"
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#include "networkd-manager.h"
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#include "networkd-sysctl.h"
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#include "parse-util.h"
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#include "string-table.h"
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#include "string-util.h"
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#include "strv.h"
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static bool link_lldp_tx_enabled(Link *link) {
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assert(link);
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if (link->flags & IFF_LOOPBACK)
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return false;
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if (link->iftype != ARPHRD_ETHER)
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return false;
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if (!link->network)
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return false;
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if (link->kind && STR_IN_SET(link->kind, "bridge", "bond"))
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return false;
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return link->network->lldp_multicast_mode >= 0 &&
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link->network->lldp_multicast_mode < _SD_LLDP_MULTICAST_MODE_MAX;
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}
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int link_lldp_tx_configure(Link *link) {
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int r;
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assert(link);
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if (!link_lldp_tx_enabled(link))
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return 0;
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if (link->lldp_tx)
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return -EBUSY;
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r = sd_lldp_tx_new(&link->lldp_tx);
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if (r < 0)
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return r;
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r = sd_lldp_tx_attach_event(link->lldp_tx, link->manager->event, 0);
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if (r < 0)
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return r;
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r = sd_lldp_tx_set_ifindex(link->lldp_tx, link->ifindex);
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if (r < 0)
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return r;
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r = sd_lldp_tx_set_hwaddr(link->lldp_tx, &link->hw_addr.ether);
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if (r < 0)
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return r;
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assert(link->network);
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r = sd_lldp_tx_set_multicast_mode(link->lldp_tx, link->network->lldp_multicast_mode);
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if (r < 0)
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return r;
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r = sd_lldp_tx_set_capabilities(link->lldp_tx,
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SD_LLDP_SYSTEM_CAPABILITIES_STATION |
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SD_LLDP_SYSTEM_CAPABILITIES_BRIDGE |
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SD_LLDP_SYSTEM_CAPABILITIES_ROUTER,
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(link_get_ip_forwarding(link, AF_INET) > 0 || link_get_ip_forwarding(link, AF_INET6) > 0) ?
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SD_LLDP_SYSTEM_CAPABILITIES_ROUTER : SD_LLDP_SYSTEM_CAPABILITIES_STATION);
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if (r < 0)
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return r;
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r = sd_lldp_tx_set_port_description(link->lldp_tx, link->network->description);
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if (r < 0)
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return r;
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r = sd_lldp_tx_set_mud_url(link->lldp_tx, link->network->lldp_mudurl);
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if (r < 0)
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return r;
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return 0;
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}
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static const char * const lldp_multicast_mode_table[_SD_LLDP_MULTICAST_MODE_MAX] = {
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[SD_LLDP_MULTICAST_MODE_NEAREST_BRIDGE] = "nearest-bridge",
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[SD_LLDP_MULTICAST_MODE_NON_TPMR_BRIDGE] = "non-tpmr-bridge",
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[SD_LLDP_MULTICAST_MODE_CUSTOMER_BRIDGE] = "customer-bridge",
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};
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DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(lldp_multicast_mode, sd_lldp_multicast_mode_t);
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int config_parse_lldp_multicast_mode(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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sd_lldp_multicast_mode_t m, *mode = ASSERT_PTR(data);
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int r;
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assert(filename);
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assert(section);
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assert(lvalue);
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assert(rvalue);
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if (isempty(rvalue)) {
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*mode = _SD_LLDP_MULTICAST_MODE_INVALID;
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return 0;
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}
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r = parse_boolean(rvalue);
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if (r >= 0) {
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*mode = r == 0 ? _SD_LLDP_MULTICAST_MODE_INVALID : SD_LLDP_MULTICAST_MODE_NEAREST_BRIDGE;
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return 0;
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}
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m = lldp_multicast_mode_from_string(rvalue);
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if (m < 0) {
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log_syntax(unit, LOG_WARNING, filename, line, m,
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"Failed to parse %s=, ignoring assignment: %s", lvalue, rvalue);
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return 0;
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}
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*mode = m;
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return 0;
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}
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