#include "fileio.h"
#include "netlink-util.h"
#include "network-internal.h"
-#include "networkd-link.h"
#include "networkd-lldp-tx.h"
-#include "networkd-netdev.h"
+#include "networkd-ndisc.h"
+#include "networkd.h"
#include "set.h"
#include "socket-util.h"
#include "stdio-util.h"
static bool link_dhcp6_enabled(Link *link) {
assert(link);
+ if (!socket_ipv6_is_supported())
+ return false;
+
if (link->flags & IFF_LOOPBACK)
return false;
static bool link_ipv6ll_enabled(Link *link) {
assert(link);
+ if (!socket_ipv6_is_supported())
+ return false;
+
if (link->flags & IFF_LOOPBACK)
return false;
return link->network->link_local & ADDRESS_FAMILY_IPV6;
}
+static bool link_ipv6_enabled(Link *link) {
+ assert(link);
+
+ if (!socket_ipv6_is_supported())
+ return false;
+
+ if (link->network->bridge)
+ return false;
+
+ /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */
+ return link_ipv6ll_enabled(link) || network_has_static_ipv6_addresses(link->network);
+}
+
static bool link_lldp_rx_enabled(Link *link) {
assert(link);
return link->network->lldp_mode != LLDP_MODE_NO;
}
-static bool link_lldp_tx_enabled(Link *link) {
+static bool link_lldp_emit_enabled(Link *link) {
assert(link);
if (link->flags & IFF_LOOPBACK)
if (!link->network)
return false;
- return link->network->lldp_emit;
+ return link->network->lldp_emit != LLDP_EMIT_NO;
}
static bool link_ipv4_forward_enabled(Link *link) {
return link->network->ip_forward & ADDRESS_FAMILY_IPV6;
}
+static bool link_proxy_arp_enabled(Link *link) {
+ assert(link);
+
+ if (link->flags & IFF_LOOPBACK)
+ return false;
+
+ if (!link->network)
+ return false;
+
+ if (link->network->proxy_arp < 0)
+ return false;
+
+ return true;
+}
+
static bool link_ipv6_accept_ra_enabled(Link *link) {
assert(link);
+ if (!socket_ipv6_is_supported())
+ return false;
+
if (link->flags & IFF_LOOPBACK)
return false;
}
static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) {
+ assert(link);
if (!socket_ipv6_is_supported())
return _IPV6_PRIVACY_EXTENSIONS_INVALID;
return link->network->ipv6_privacy_extensions;
}
+static int link_enable_ipv6(Link *link) {
+ const char *p = NULL;
+ bool disabled;
+ int r;
+
+ if (link->flags & IFF_LOOPBACK)
+ return 0;
+
+ disabled = !link_ipv6_enabled(link);
+
+ p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/disable_ipv6");
+
+ r = write_string_file(p, one_zero(disabled), WRITE_STRING_FILE_VERIFY_ON_FAILURE);
+ if (r < 0)
+ log_link_warning_errno(link, r, "Cannot %s IPv6 for interface %s: %m", disabled ? "disable" : "enable", link->ifname);
+ else {
+ if (disabled)
+ log_link_info(link, "IPv6 disabled for interface: %m");
+ else
+ log_link_info(link, "IPv6 enabled for interface: %m");
+ }
+
+ return 0;
+}
+
void link_update_operstate(Link *link) {
LinkOperationalState operstate;
assert(link);
link->operstate = operstate;
link_send_changed(link, "OperationalState", NULL);
link_dirty(link);
- manager_dirty(link->manager);
}
}
sd_dhcp_client_unref(link->dhcp_client);
sd_dhcp_lease_unref(link->dhcp_lease);
- link_lldp_tx_stop(link);
+ link_lldp_emit_stop(link);
free(link->lease_file);
sd_ipv4ll_unref(link->ipv4ll);
sd_dhcp6_client_unref(link->dhcp6_client);
- sd_ndisc_unref(link->ndisc_router_discovery);
+ sd_ndisc_unref(link->ndisc);
+
+ set_free_free(link->ndisc_rdnss);
+ set_free_free(link->ndisc_dnssl);
if (link->manager)
hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex));
link->state = state;
link_send_changed(link, "AdministrativeState", NULL);
-
- return;
}
static void link_enter_unmanaged(Link *link) {
r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m");
}
- if (link->ndisc_router_discovery) {
- k = sd_ndisc_stop(link->ndisc_router_discovery);
+ if (link->ndisc) {
+ k = sd_ndisc_stop(link->ndisc);
if (k < 0)
r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m");
}
- link_lldp_tx_stop(link);
+ link_lldp_emit_stop(link);
return r;
}
assert(link);
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return;
+
if (!link->network)
return;
link_set_state(link, LINK_STATE_SETTING_ROUTES);
LIST_FOREACH(routes, rt, link->network->static_routes) {
- r = route_configure(rt, link, &route_handler);
+ r = route_configure(rt, link, route_handler);
if (r < 0) {
log_link_warning_errno(link, r, "Could not set routes: %m");
link_enter_failed(link);
link_set_state(link, LINK_STATE_SETTING_ADDRESSES);
LIST_FOREACH(addresses, ad, link->network->static_addresses) {
- r = address_configure(ad, link, &address_handler, false);
+ r = address_configure(ad, link, address_handler, false);
if (r < 0) {
log_link_warning_errno(link, r, "Could not set addresses: %m");
link_enter_failed(link);
log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m");
}
+ r = sd_dhcp_server_set_emit_router(link->dhcp_server, link->network->dhcp_server_emit_router);
+ if (r < 0) {
+ log_link_warning_errno(link, r, "Failed to set router emission for DHCP server: %m");
+ return r;
+ }
+
if (link->network->dhcp_server_emit_timezone) {
_cleanup_free_ char *buffer = NULL;
const char *tz = NULL;
return r;
}
+static int link_set_proxy_arp(Link *const link) {
+ const char *p = NULL;
+ int r;
+
+ if (!link_proxy_arp_enabled(link))
+ return 0;
+
+ p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/proxy_arp");
+
+ r = write_string_file(p, one_zero(link->network->proxy_arp), WRITE_STRING_FILE_VERIFY_ON_FAILURE);
+ if (r < 0)
+ log_link_warning_errno(link, r, "Cannot configure proxy ARP for interface: %m");
+
+ return 0;
+}
+
static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
_cleanup_link_unref_ Link *link = userdata;
int r;
(void) link_lldp_save(link);
- if (link_lldp_tx_enabled(link) && event == SD_LLDP_EVENT_ADDED) {
+ if (link_lldp_emit_enabled(link) && event == SD_LLDP_EVENT_ADDED) {
/* If we received information about a new neighbor, restart the LLDP "fast" logic */
log_link_debug(link, "Received LLDP datagram from previously unknown neighbor, restarting 'fast' LLDP transmission.");
- r = link_lldp_tx_start(link);
+ r = link_lldp_emit_start(link);
if (r < 0)
log_link_warning_errno(link, r, "Failed to restart LLDP transmission: %m");
}
assert(link->dhcp6_client);
assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0);
- log_link_debug(link, "Acquiring DHCPv6 lease");
-
- r = sd_dhcp6_client_set_local_address(link->dhcp6_client, &link->ipv6ll_address);
- if (r < 0 && r != -EBUSY)
- return log_link_warning_errno(link, r, "Could not set IPv6LL address in DHCP client: %m");
-
- r = sd_dhcp6_client_start(link->dhcp6_client);
+ /* start DHCPv6 client in stateless mode */
+ r = dhcp6_request_address(link, true);
if (r < 0 && r != -EBUSY)
return log_link_warning_errno(link, r, "Could not acquire DHCPv6 lease: %m");
+ else
+ log_link_debug(link, "Acquiring DHCPv6 lease");
}
if (link_ipv6_accept_ra_enabled(link)) {
- assert(link->ndisc_router_discovery);
+ assert(link->ndisc);
log_link_debug(link, "Discovering IPv6 routers");
- r = sd_ndisc_router_discovery_start(link->ndisc_router_discovery);
+ r = sd_ndisc_start(link->ndisc);
if (r < 0 && r != -EBUSY)
return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m");
}
return 0;
}
-static int link_acquire_conf(Link *link) {
+static int link_acquire_ipv4_conf(Link *link) {
int r;
assert(link);
return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m");
}
- if (link_lldp_tx_enabled(link)) {
- r = link_lldp_tx_start(link);
+ return 0;
+}
+
+static int link_acquire_conf(Link *link) {
+ int r;
+
+ assert(link);
+
+ r = link_acquire_ipv4_conf(link);
+ if (r < 0)
+ return r;
+
+ if (in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address) == 0) {
+ r = link_acquire_ipv6_conf(link);
+ if (r < 0)
+ return r;
+ }
+
+ if (link_lldp_emit_enabled(link)) {
+ r = link_lldp_emit_start(link);
if (r < 0)
return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m");
}
if (r < 0)
return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");
+ /* set it free if not enslaved with networkd */
+ if (!link->network->bridge && !link->network->bond) {
+ r = sd_netlink_message_append_u32(req, IFLA_MASTER, 0);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append IFLA_MASTER attribute: %m");
+ }
+
r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP);
if (r < 0)
return log_link_error_errno(link, r, "Could not set link flags: %m");
return log_link_error_errno(link, r, "Could not set MAC address: %m");
}
+ /* If IPv6 not configured (no static IPv6 address and IPv6LL autoconfiguration is disabled)
+ for this interface, or if it is a bridge slave, then disable IPv6 else enable it. */
+ (void) link_enable_ipv6(link);
+
if (link->network->mtu) {
+ /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes
+ on the interface. Bump up MTU bytes to IPV6_MTU_MIN. */
+ if (link_ipv6_enabled(link) && link->network->mtu < IPV6_MIN_MTU) {
+
+ log_link_warning(link, "Bumping MTU to " STRINGIFY(IPV6_MIN_MTU) ", as "
+ "IPv6 is requested and requires a minimum MTU of " STRINGIFY(IPV6_MIN_MTU) " bytes: %m");
+
+ link->network->mtu = IPV6_MIN_MTU;
+ }
+
r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu);
if (r < 0)
return log_link_error_errno(link, r, "Could not set MTU: %m");
if (r < 0)
return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m");
- if (socket_ipv6_is_supported()) {
+ if (link_ipv6_enabled(link)) {
/* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */
r = sd_netlink_message_open_container(req, AF_INET6);
if (r < 0)
return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m");
- ipv6ll_mode = link_ipv6ll_enabled(link) ? IN6_ADDR_GEN_MODE_EUI64 : IN6_ADDR_GEN_MODE_NONE;
+ if (!link_ipv6ll_enabled(link))
+ ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE;
+ else {
+ const char *p = NULL;
+ _cleanup_free_ char *stable_secret = NULL;
+
+ p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/stable_secret");
+ r = read_one_line_file(p, &stable_secret);
+
+ if (r < 0)
+ ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64;
+ else
+ ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY;
+ }
r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode);
if (r < 0)
return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m");
p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra");
- /* We handle router advertisments ourselves, tell the kernel to GTFO */
+ /* We handle router advertisements ourselves, tell the kernel to GTFO */
r = write_string_file(p, "0", WRITE_STRING_FILE_VERIFY_ON_FAILURE);
if (r < 0)
log_link_warning_errno(link, r, "Cannot disable kernel IPv6 accept_ra for interface: %m");
if (route->protocol == RTPROT_KERNEL)
continue;
- r = route_remove(route, link, link_address_remove_handler);
+ r = route_remove(route, link, link_route_remove_handler);
if (r < 0)
return r;
}
if (r < 0)
return r;
+ r = link_set_proxy_arp(link);
+ if (r < 0)
+ return r;
+
r = link_set_ipv4_forward(link);
if (r < 0)
return r;
}
if (link_lldp_rx_enabled(link)) {
- r = sd_lldp_new(&link->lldp, link->ifindex);
+ r = sd_lldp_new(&link->lldp);
+ if (r < 0)
+ return r;
+
+ r = sd_lldp_set_ifindex(link->lldp, link->ifindex);
if (r < 0)
return r;
r = link_acquire_conf(link);
if (r < 0)
return r;
-
- if (in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address) == 0) {
- r = link_acquire_ipv6_conf(link);
- if (r < 0)
- return r;
- }
}
return link_enter_join_netdev(link);
link_enter_failed(link);
return r;
}
+
+ r = link_enter_set_addresses(link);
+ if (r < 0)
+ return r;
}
r = link_handle_bound_by_list(link);
}
if (link->dhcp_client) {
+ const DUID *duid = link_duid(link);
+
r = sd_dhcp_client_set_mac(link->dhcp_client,
(const uint8_t *) &link->mac,
sizeof (link->mac),
if (r < 0)
return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m");
- if (link->network->duid_type != _DUID_TYPE_INVALID)
- r = sd_dhcp_client_set_iaid_duid(link->dhcp_client,
- link->network->iaid,
- link->network->dhcp_duid_type,
- link->network->dhcp_duid,
- link->network->dhcp_duid_len);
- else
- r = sd_dhcp_client_set_iaid_duid(link->dhcp_client,
- link->network->iaid,
- link->manager->dhcp_duid_type,
- link->manager->dhcp_duid,
- link->manager->dhcp_duid_len);
+ r = sd_dhcp_client_set_iaid_duid(link->dhcp_client,
+ link->network->iaid,
+ duid->type,
+ duid->raw_data_len > 0 ? duid->raw_data : NULL,
+ duid->raw_data_len);
if (r < 0)
return log_link_warning_errno(link, r, "Could not update DUID/IAID in DHCP client: %m");
}
if (link->dhcp6_client) {
+ const DUID* duid = link_duid(link);
+
r = sd_dhcp6_client_set_mac(link->dhcp6_client,
(const uint8_t *) &link->mac,
sizeof (link->mac),
if (r < 0)
return log_link_warning_errno(link, r, "Could not update DHCPv6 IAID: %m");
- if (link->network->duid_type != _DUID_TYPE_INVALID)
- r = sd_dhcp6_client_set_duid(link->dhcp6_client,
- link->network->dhcp_duid_type,
- link->network->dhcp_duid,
- link->network->dhcp_duid_len);
- else
- r = sd_dhcp6_client_set_duid(link->dhcp6_client,
- link->manager->dhcp_duid_type,
- link->manager->dhcp_duid,
- link->manager->dhcp_duid_len);
+ r = sd_dhcp6_client_set_duid(link->dhcp6_client,
+ duid->type,
+ duid->raw_data_len > 0 ? duid->raw_data : NULL,
+ duid->raw_data_len);
if (r < 0)
return log_link_warning_errno(link, r, "Could not update DHCPv6 DUID: %m");
}
if (space)
fputc(' ', f);
serialize_in6_addrs(f, in6_addrs, r);
+ space = true;
+ }
+ }
+
+ /* Make sure to flush out old entries before we use the NDISC data */
+ ndisc_vacuum(link);
+
+ if (link->network->dhcp_use_dns && link->ndisc_rdnss) {
+ NDiscRDNSS *dd;
+
+ SET_FOREACH(dd, link->ndisc_rdnss, i) {
+ if (space)
+ fputc(' ', f);
+
+ serialize_in6_addrs(f, &dd->address, 1);
+ space = true;
}
}
if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) {
if (link->dhcp_lease)
(void) sd_dhcp_lease_get_domainname(link->dhcp_lease, &dhcp_domainname);
-
if (dhcp6_lease)
(void) sd_dhcp6_lease_get_domains(dhcp6_lease, &dhcp6_domains);
}
fputs("DOMAINS=", f);
fputstrv(f, link->network->search_domains, NULL, &space);
- if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES && dhcp_domainname)
- fputs_with_space(f, dhcp_domainname, NULL, &space);
+ if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) {
+ NDiscDNSSL *dd;
+
+ if (dhcp_domainname)
+ fputs_with_space(f, dhcp_domainname, NULL, &space);
+ if (dhcp6_domains)
+ fputstrv(f, dhcp6_domains, NULL, &space);
- if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES && dhcp6_domains)
- fputstrv(f, dhcp6_domains, NULL, &space);
+ SET_FOREACH(dd, link->ndisc_dnssl, i)
+ fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space);
+ }
fputc('\n', f);
fputs("ROUTE_DOMAINS=", f);
fputstrv(f, link->network->route_domains, NULL, NULL);
- if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE && dhcp_domainname)
- fputs_with_space(f, dhcp_domainname, NULL, &space);
+ if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE) {
+ NDiscDNSSL *dd;
+
+ if (dhcp_domainname)
+ fputs_with_space(f, dhcp_domainname, NULL, &space);
+ if (dhcp6_domains)
+ fputstrv(f, dhcp6_domains, NULL, &space);
- if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE && dhcp6_domains)
- fputstrv(f, dhcp6_domains, NULL, &space);
+ SET_FOREACH(dd, link->ndisc_dnssl, i)
+ fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space);
+ }
fputc('\n', f);
assert(link);
+ /* mark manager dirty as link is dirty */
+ manager_dirty(link->manager);
+
r = set_ensure_allocated(&link->manager->dirty_links, NULL);
if (r < 0)
/* allocation errors are ignored */
return;
r = set_put(link->manager->dirty_links, link);
- if (r < 0)
- /* allocation errors are ignored */
+ if (r <= 0)
+ /* don't take another ref if the link was already dirty */
return;
link_ref(link);
projects / thirdparty / systemd.git / blobdiff