#include "dhcp-lease-internal.h"
#include "fd-util.h"
#include "fileio.h"
-#include "lldp.h"
#include "netlink-util.h"
#include "network-internal.h"
-#include "networkd-link.h"
+#include "networkd.h"
#include "networkd-lldp-tx.h"
-#include "networkd-netdev.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;
+
+ return link_dhcp6_enabled(link) || link_ipv6ll_enabled(link) || network_has_static_ipv6_addresses(link->network);
+}
+
static bool link_lldp_rx_enabled(Link *link) {
assert(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);
}
}
link->state = state;
link_send_changed(link, "AdministrativeState", NULL);
-
- return;
}
static void link_enter_unmanaged(Link *link) {
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;
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");
}
+ 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_tx_enabled(link)) {
r = link_lldp_tx_start(link);
if (r < 0)
return log_link_error_errno(link, r, "Could not set MAC address: %m");
}
+ /* If IPv6 not configured (no static IPv6 address and neither DHCPv6 nor IPv6LL is enabled)
+ for this interface 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)
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;
r = sd_lldp_match_capabilities(link->lldp,
link->network->lldp_mode == LLDP_MODE_ROUTERS_ONLY ?
- _LLDP_SYSTEM_CAPABILITIES_ALL_ROUTERS :
- _LLDP_SYSTEM_CAPABILITIES_ALL);
+ SD_LLDP_SYSTEM_CAPABILITIES_ALL_ROUTERS :
+ SD_LLDP_SYSTEM_CAPABILITIES_ALL);
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),
ARPHRD_ETHER);
if (r < 0)
return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m");
+
+ 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),
ARPHRD_ETHER);
if (r < 0)
return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m");
+
+ r = sd_dhcp6_client_set_iaid(link->dhcp6_client,
+ link->network->iaid);
+ if (r < 0)
+ return log_link_warning_errno(link, r, "Could not update DHCPv6 IAID: %m");
+
+ 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");
}
}
}
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