#include <linux/if.h>
#include <unistd.h>
-#include "networkd-link.h"
-#include "networkd-netdev.h"
-#include "libudev-private.h"
-#include "udev-util.h"
#include "util.h"
#include "virt.h"
+#include "fileio.h"
#include "bus-util.h"
+#include "udev-util.h"
+#include "libudev-private.h"
#include "network-internal.h"
+#include "networkd-link.h"
+#include "networkd-netdev.h"
#include "conf-parser.h"
-
#include "dhcp-lease-internal.h"
+bool link_dhcp6_enabled(Link *link) {
+ if (link->flags & IFF_LOOPBACK)
+ return false;
+
+ if (!link->network)
+ return false;
+
+ return IN_SET(link->network->dhcp, ADDRESS_FAMILY_IPV6, ADDRESS_FAMILY_YES);
+}
+
+bool link_dhcp4_enabled(Link *link) {
+ if (link->flags & IFF_LOOPBACK)
+ return false;
+
+ if (!link->network)
+ return false;
+
+ return IN_SET(link->network->dhcp, ADDRESS_FAMILY_IPV4, ADDRESS_FAMILY_YES);
+}
+
+bool link_dhcp4_server_enabled(Link *link) {
+ if (link->flags & IFF_LOOPBACK)
+ return false;
+
+ if (!link->network)
+ return false;
+
+ return link->network->dhcp_server;
+}
+
+bool link_ipv4ll_enabled(Link *link) {
+ if (link->flags & IFF_LOOPBACK)
+ return false;
+
+ if (!link->network)
+ return false;
+
+ return link->network->ipv4ll;
+}
+
+bool link_lldp_enabled(Link *link) {
+ if (link->flags & IFF_LOOPBACK)
+ return false;
+
+ if (!link->network)
+ return false;
+
+ if (link->network->bridge)
+ return false;
+
+ return link->network->lldp;
+}
+
+static bool link_ipv4_forward_enabled(Link *link) {
+ if (link->flags & IFF_LOOPBACK)
+ return false;
+
+ if (!link->network)
+ return false;
+
+ return IN_SET(link->network->ip_forward, ADDRESS_FAMILY_IPV4, ADDRESS_FAMILY_YES);
+}
+
+static bool link_ipv6_forward_enabled(Link *link) {
+ if (link->flags & IFF_LOOPBACK)
+ return false;
+
+ if (!link->network)
+ return false;
+
+ return IN_SET(link->network->ip_forward, ADDRESS_FAMILY_IPV6, ADDRESS_FAMILY_YES);
+}
+
+#define FLAG_STRING(string, flag, old, new) \
+ (((old ^ new) & flag) \
+ ? ((old & flag) ? (" -" string) : (" +" string)) \
+ : "")
+
+static int link_update_flags(Link *link, sd_rtnl_message *m) {
+ unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags;
+ uint8_t operstate;
+ int r;
+
+ assert(link);
+
+ r = sd_rtnl_message_link_get_flags(m, &flags);
+ if (r < 0) {
+ log_link_warning(link, "Could not get link flags");
+ return r;
+ }
+
+ r = sd_rtnl_message_read_u8(m, IFLA_OPERSTATE, &operstate);
+ if (r < 0)
+ /* if we got a message without operstate, take it to mean
+ the state was unchanged */
+ operstate = link->kernel_operstate;
+
+ if ((link->flags == flags) && (link->kernel_operstate == operstate))
+ return 0;
+
+ if (link->flags != flags) {
+ log_link_debug(link, "flags change:%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+ FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags),
+ FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags),
+ FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags),
+ FLAG_STRING("UP", IFF_UP, link->flags, flags),
+ FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags),
+ FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags),
+ FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags),
+ FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags),
+ FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags),
+ FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags),
+ FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags),
+ FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags),
+ FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags),
+ FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags),
+ FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags),
+ FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags),
+ FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags),
+ FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags),
+ FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags));
+
+ unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP |
+ IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING |
+ IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT |
+ IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL |
+ IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP |
+ IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO);
+ unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags);
+ unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags);
+
+ /* link flags are currently at most 18 bits, let's align to
+ * printing 20 */
+ if (unknown_flags_added)
+ log_link_debug(link,
+ "unknown link flags gained: %#.5x (ignoring)",
+ unknown_flags_added);
+
+ if (unknown_flags_removed)
+ log_link_debug(link,
+ "unknown link flags lost: %#.5x (ignoring)",
+ unknown_flags_removed);
+ }
+
+ link->flags = flags;
+ link->kernel_operstate = operstate;
+
+ link_save(link);
+
+ return 0;
+}
+
static int link_new(Manager *manager, sd_rtnl_message *message, Link **ret) {
_cleanup_link_unref_ Link *link = NULL;
uint16_t type;
r = sd_rtnl_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac);
if (r < 0)
- log_debug_link(link, "MAC address not found for new device, continuing without");
+ log_link_debug(link, "MAC address not found for new device, continuing without");
r = asprintf(&link->state_file, "/run/systemd/netif/links/%d",
link->ifindex);
if (r < 0)
return -ENOMEM;
- r = hashmap_ensure_allocated(&manager->links, NULL, NULL);
+ r = asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d",
+ link->ifindex);
+ if (r < 0)
+ return -ENOMEM;
+
+
+ r = hashmap_ensure_allocated(&manager->links, NULL);
if (r < 0)
return r;
if (r < 0)
return r;
+ r = link_update_flags(link, message);
+ if (r < 0)
+ return r;
+
*ret = link;
link = NULL;
address_free(address);
}
+ sd_dhcp_server_unref(link->dhcp_server);
sd_dhcp_client_unref(link->dhcp_client);
sd_dhcp_lease_unref(link->dhcp_lease);
- unlink(link->lease_file);
free(link->lease_file);
+ sd_lldp_free(link->lldp);
+
+ free(link->lldp_file);
+
sd_ipv4ll_unref(link->ipv4ll);
sd_dhcp6_client_unref(link->dhcp6_client);
sd_icmp6_nd_unref(link->icmp6_router_discovery);
free(link->ifname);
- unlink(link->state_file);
free(link->state_file);
udev_device_unref(link->udev_device);
return 0;
}
+static void link_set_state(Link *link, LinkState state) {
+ assert(link);
+
+ if (link->state == state)
+ return;
+
+ link->state = state;
+
+ link_send_changed(link, "AdministrativeState", NULL);
+
+ return;
+}
+
void link_drop(Link *link) {
if (!link || link->state == LINK_STATE_LINGER)
return;
- link->state = LINK_STATE_LINGER;
+ link_set_state(link, LINK_STATE_LINGER);
- log_debug_link(link, "link removed");
+ log_link_debug(link, "link removed");
link_unref(link);
static void link_enter_unmanaged(Link *link) {
assert(link);
- log_debug_link(link, "unmanaged");
+ log_link_debug(link, "unmanaged");
- link->state = LINK_STATE_UNMANAGED;
+ link_set_state(link, LINK_STATE_UNMANAGED);
link_save(link);
}
if (link->dhcp_client) {
k = sd_dhcp_client_stop(link->dhcp_client);
if (k < 0) {
- log_warning_link(link, "Could not stop DHCPv4 client: %s",
+ log_link_warning(link, "Could not stop DHCPv4 client: %s",
strerror(-r));
r = k;
}
if (link->ipv4ll) {
k = sd_ipv4ll_stop(link->ipv4ll);
if (k < 0) {
- log_warning_link(link, "Could not stop IPv4 link-local: %s",
- strerror(-r));
- r = k;
- }
- }
-
- if (link->dhcp_server) {
- k = sd_dhcp_server_stop(link->dhcp_server);
- if (k < 0) {
- log_warning_link(link, "Could not stop DHCPv4 server: %s",
+ log_link_warning(link, "Could not stop IPv4 link-local: %s",
strerror(-r));
r = k;
}
if (link->dhcp6_client) {
k = sd_dhcp6_client_stop(link->dhcp6_client);
if (k < 0) {
- log_warning_link(link, "Could not stop DHCPv6 client: %s",
+ log_link_warning(link, "Could not stop DHCPv6 client: %s",
strerror(-r));
r = k;
}
k = sd_icmp6_nd_stop(link->icmp6_router_discovery);
if (k < 0) {
- log_warning_link(link,
+ log_link_warning(link,
"Could not stop ICMPv6 router discovery: %s",
strerror(-r));
r = k;
}
}
+ if (link->lldp) {
+
+ k = sd_lldp_stop(link->lldp);
+ if (k < 0) {
+ log_link_warning(link, "Could not stop LLDP : %s",
+ strerror(-r));
+ r = k;
+ }
+ }
+
return r;
}
if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return;
- log_warning_link(link, "failed");
+ log_link_warning(link, "failed");
- link->state = LINK_STATE_FAILED;
+ link_set_state(link, LINK_STATE_FAILED);
link_stop_clients(link);
assert(link);
assert(link->network);
- /* The the first statically configured address if there is any */
+ /* The first statically configured address if there is any */
LIST_FOREACH(addresses, address, link->network->static_addresses) {
if (address->family != AF_INET)
}
static int link_enter_configured(Link *link) {
- int r;
-
assert(link);
assert(link->network);
assert(link->state == LINK_STATE_SETTING_ROUTES);
- if (link->network->dhcp_server &&
- !sd_dhcp_server_is_running(link->dhcp_server)) {
- struct in_addr pool_start;
- Address *address;
-
- address = link_find_dhcp_server_address(link);
- if (!address) {
- log_warning_link(link,
- "Failed to find suitable address for DHCPv4 server instance.");
- link_enter_failed(link);
- return 0;
- }
-
- log_debug_link(link, "offering DHCPv4 leases");
+ log_link_info(link, "link configured");
- r = sd_dhcp_server_set_address(link->dhcp_server,
- &address->in_addr.in,
- address->prefixlen);
- if (r < 0)
- return r;
-
- /* offer 32 addresses starting from the address following the server address */
- pool_start.s_addr = htobe32(be32toh(address->in_addr.in.s_addr) + 1);
- r = sd_dhcp_server_set_lease_pool(link->dhcp_server,
- &pool_start, 32);
- if (r < 0)
- return r;
-
- /* TODO:
- r = sd_dhcp_server_set_router(link->dhcp_server,
- &main_address->in_addr.in);
- if (r < 0)
- return r;
-
- r = sd_dhcp_server_set_prefixlen(link->dhcp_server,
- main_address->prefixlen);
- if (r < 0)
- return r;
- */
-
- r = sd_dhcp_server_start(link->dhcp_server);
- if (r < 0) {
- log_warning_link(link, "could not start DHCPv4 server "
- "instance: %s", strerror(-r));
-
- link_enter_failed(link);
-
- return 0;
- }
- }
-
- log_info_link(link, "link configured");
-
- link->state = LINK_STATE_CONFIGURED;
+ link_set_state(link, LINK_STATE_CONFIGURED);
link_save(link);
if (!link->static_configured)
return;
- if (link->network->ipv4ll)
+ if (link_ipv4ll_enabled(link))
if (!link->ipv4ll_address ||
!link->ipv4ll_route)
return;
- if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V4))
- if (!link->dhcp4_configured)
+ if (link_dhcp4_enabled(link) && !link->dhcp4_configured)
return;
if (link->state != LINK_STATE_CONFIGURED)
r = sd_rtnl_message_get_errno(m);
if (r < 0 && r != -EEXIST)
- log_struct_link(LOG_WARNING, link,
- "MESSAGE=%-*s: could not set route: %s",
- IFNAMSIZ,
- link->ifname, strerror(-r),
- "ERRNO=%d", -r,
- NULL);
+ log_link_warning_errno(link, -r, "%-*s: could not set route: %m", IFNAMSIZ, link->ifname);
if (link->link_messages == 0) {
- log_debug_link(link, "routes set");
+ log_link_debug(link, "routes set");
link->static_configured = true;
link_client_handler(link);
}
assert(link->network);
assert(link->state == LINK_STATE_SETTING_ADDRESSES);
- link->state = LINK_STATE_SETTING_ROUTES;
+ link_set_state(link, LINK_STATE_SETTING_ROUTES);
LIST_FOREACH(routes, rt, link->network->static_routes) {
r = route_configure(rt, link, &route_handler);
if (r < 0) {
- log_warning_link(link,
+ log_link_warning(link,
"could not set routes: %s",
strerror(-r));
link_enter_failed(link);
link->static_configured = true;
link_client_handler(link);
} else
- log_debug_link(link, "setting routes");
+ log_link_debug(link, "setting routes");
return 0;
}
r = sd_rtnl_message_get_errno(m);
if (r < 0 && r != -ESRCH)
- log_struct_link(LOG_WARNING, link,
- "MESSAGE=%-*s: could not drop route: %s",
- IFNAMSIZ,
- link->ifname, strerror(-r),
- "ERRNO=%d", -r,
- NULL);
-
- return 1;
-}
-
-int link_get_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- _cleanup_link_unref_ Link *link = userdata;
- int r;
-
- assert(rtnl);
- assert(m);
- assert(link);
- assert(link->manager);
-
- for (; m; m = sd_rtnl_message_next(m)) {
- r = sd_rtnl_message_get_errno(m);
- if (r < 0) {
- log_debug_link(link, "getting address failed: %s",
- strerror(-r));
- continue;
- }
-
- r = link_rtnl_process_address(rtnl, m, link->manager);
- if (r < 0)
- log_warning_link(link, "could not process address: %s",
- strerror(-r));
- }
+ log_link_warning_errno(link, -r, "%-*s: could not drop route: %m", IFNAMSIZ, link->ifname);
return 1;
}
r = sd_rtnl_message_get_errno(m);
if (r < 0 && r != -EEXIST)
- log_struct_link(LOG_WARNING, link,
- "MESSAGE=%-*s: could not set address: %s",
- IFNAMSIZ,
- link->ifname, strerror(-r),
- "ERRNO=%d", -r,
- NULL);
- else if (r >= 0) {
- /* calling handler directly so take a ref */
- link_ref(link);
- link_get_address_handler(rtnl, m, link);
- }
+ log_link_warning_errno(link, -r, "%-*s: could not set address: %m", IFNAMSIZ, link->ifname);
+ else if (r >= 0)
+ link_rtnl_process_address(rtnl, m, link->manager);
if (link->link_messages == 0) {
- log_debug_link(link, "addresses set");
+ log_link_debug(link, "addresses set");
link_enter_set_routes(link);
}
assert(link->network);
assert(link->state != _LINK_STATE_INVALID);
- link->state = LINK_STATE_SETTING_ADDRESSES;
+ link_set_state(link, LINK_STATE_SETTING_ADDRESSES);
LIST_FOREACH(addresses, ad, link->network->static_addresses) {
r = address_configure(ad, link, &address_handler);
if (r < 0) {
- log_warning_link(link,
- "could not set addresses: %s",
- strerror(-r));
+ log_link_warning_errno(link, r, "Could not set addresses: %m");
link_enter_failed(link);
return r;
}
link->link_messages ++;
}
+ /* now that we can figure out a default address for the dhcp server,
+ start it */
+ if (link_dhcp4_server_enabled(link)) {
+ struct in_addr pool_start;
+ Address *address;
+
+ address = link_find_dhcp_server_address(link);
+ if (!address) {
+ log_link_warning(link,
+ "Failed to find suitable address for DHCPv4 server instance.");
+ link_enter_failed(link);
+ return 0;
+ }
+
+ r = sd_dhcp_server_set_address(link->dhcp_server,
+ &address->in_addr.in,
+ address->prefixlen);
+ if (r < 0)
+ return r;
+
+ /* offer 32 addresses starting from the address following the server address */
+ pool_start.s_addr = htobe32(be32toh(address->in_addr.in.s_addr) + 1);
+ r = sd_dhcp_server_set_lease_pool(link->dhcp_server,
+ &pool_start, 32);
+ if (r < 0)
+ return r;
+
+ /* TODO:
+ r = sd_dhcp_server_set_router(link->dhcp_server,
+ &main_address->in_addr.in);
+ if (r < 0)
+ return r;
+
+ r = sd_dhcp_server_set_prefixlen(link->dhcp_server,
+ main_address->prefixlen);
+ if (r < 0)
+ return r;
+ */
+
+ r = sd_dhcp_server_start(link->dhcp_server);
+ if (r < 0) {
+ log_link_warning(link, "could not start DHCPv4 server "
+ "instance: %s", strerror(-r));
+
+ link_enter_failed(link);
+
+ return 0;
+ }
+
+ log_link_debug(link, "offering DHCPv4 leases");
+ }
+
if (link->link_messages == 0) {
link_enter_set_routes(link);
} else
- log_debug_link(link, "setting addresses");
+ log_link_debug(link, "setting addresses");
return 0;
}
r = sd_rtnl_message_get_errno(m);
if (r < 0 && r != -EADDRNOTAVAIL)
- log_struct_link(LOG_WARNING, link,
- "MESSAGE=%-*s: could not drop address: %s",
+ log_link_warning_errno(link, -r, "%-*s: could not drop address: %m", IFNAMSIZ, link->ifname);
+
+ return 1;
+}
+
+static int link_set_bridge_fdb(const Link *const link) {
+ FdbEntry *fdb_entry;
+ int r = 0;
+
+ LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) {
+ r = fdb_entry_configure(link->manager->rtnl, fdb_entry, link->ifindex);
+ if(r < 0) {
+ log_link_error(link, "Failed to add MAC entry to static MAC table: %s", strerror(-r));
+ break;
+ }
+ }
+
+ return r;
+}
+
+static int link_set_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ _cleanup_link_unref_ Link *link = userdata;
+ int r;
+
+ log_link_debug(link, "set link");
+
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0 && r != -EEXIST) {
+ log_link_struct(link, LOG_ERR,
+ "MESSAGE=%-*s: could not join netdev: %s",
IFNAMSIZ,
link->ifname, strerror(-r),
"ERRNO=%d", -r,
NULL);
+ link_enter_failed(link);
+ return 1;
+ }
- return 1;
+ return 0;
}
static int set_hostname_handler(sd_bus *bus, sd_bus_message *m, void *userdata,
return 1;
r = sd_bus_message_get_errno(m);
- if (r < 0)
- r = -r;
if (r > 0)
- log_warning_link(link, "Could not set hostname: %s",
+ log_link_warning(link, "Could not set hostname: %s",
strerror(r));
return 1;
assert(link->manager);
assert(hostname);
- log_debug_link(link, "Setting transient hostname: '%s'", hostname);
+ log_link_debug(link, "Setting transient hostname: '%s'", hostname);
if (!link->manager->bus) {
/* TODO: replace by assert when we can rely on kdbus */
- log_info_link(link,
+ log_link_info(link,
"Not connected to system bus, ignoring transient hostname.");
return 0;
}
r = sd_bus_call_async(link->manager->bus, NULL, m, set_hostname_handler,
link, 0);
if (r < 0) {
- log_error_link(link, "Could not set transient hostname: %s",
+ log_link_error(link, "Could not set transient hostname: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_get_errno(m);
if (r < 0)
- log_struct_link(LOG_WARNING, link,
- "MESSAGE=%-*s: could not set MTU: %s",
- IFNAMSIZ, link->ifname, strerror(-r),
- "ERRNO=%d", -r,
- NULL);
+ log_link_warning_errno(link, -r, "%-*s: could not set MTU: %m", IFNAMSIZ, link->ifname);
return 1;
}
assert(link->manager);
assert(link->manager->rtnl);
- log_debug_link(link, "setting MTU: %" PRIu32, mtu);
+ log_link_debug(link, "setting MTU: %" PRIu32, mtu);
r = sd_rtnl_message_new_link(link->manager->rtnl, &req,
RTM_SETLINK, link->ifindex);
if (r < 0) {
- log_error_link(link, "Could not allocate RTM_SETLINK message");
+ log_link_error(link, "Could not allocate RTM_SETLINK message");
return r;
}
r = sd_rtnl_message_append_u32(req, IFLA_MTU, mtu);
if (r < 0) {
- log_error_link(link, "Could not append MTU: %s", strerror(-r));
+ log_link_error(link, "Could not append MTU: %s", strerror(-r));
return r;
}
r = sd_rtnl_call_async(link->manager->rtnl, req, set_mtu_handler, link,
0, NULL);
if (r < 0) {
- log_error_link(link,
+ log_link_error(link,
"Could not send rtnetlink message: %s",
strerror(-r));
return r;
return 0;
}
-static void dhcp6_handler(sd_dhcp6_client *client, int event, void *userdata) {
- Link *link = userdata;
-
- assert(link);
- assert(link->network);
- assert(link->manager);
-
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
- return;
-
- switch(event) {
- case DHCP6_EVENT_STOP:
- case DHCP6_EVENT_RESEND_EXPIRE:
- case DHCP6_EVENT_RETRANS_MAX:
- case DHCP6_EVENT_IP_ACQUIRE:
- log_debug_link(link, "DHCPv6 event %d", event);
-
- break;
-
- default:
- if (event < 0)
- log_warning_link(link, "DHCPv6 error: %s",
- strerror(-event));
- else
- log_warning_link(link, "DHCPv6 unknown event: %d",
- event);
- return;
- }
-}
-
-static void icmp6_router_handler(sd_icmp6_nd *nd, int event, void *userdata) {
- Link *link = userdata;
+static int link_set_bridge(Link *link) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
assert(link);
assert(link->network);
- assert(link->manager);
-
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
- return;
-
- switch(event) {
- case ICMP6_EVENT_ROUTER_ADVERTISMENT_NONE:
- case ICMP6_EVENT_ROUTER_ADVERTISMENT_OTHER:
- return;
-
- case ICMP6_EVENT_ROUTER_ADVERTISMENT_TIMEOUT:
- case ICMP6_EVENT_ROUTER_ADVERTISMENT_MANAGED:
- break;
-
- default:
- if (event < 0)
- log_warning_link(link, "ICMPv6 error: %s",
- strerror(-event));
- else
- log_warning_link(link, "ICMPv6 unknown event: %d",
- event);
-
- return;
- }
- if (link->dhcp6_client)
- return;
-
- r = sd_dhcp6_client_new(&link->dhcp6_client);
- if (r < 0)
- return;
-
- r = sd_dhcp6_client_attach_event(link->dhcp6_client, NULL, 0);
- if (r < 0) {
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
- return;
- }
+ if(link->network->cost == 0)
+ return 0;
- r = sd_dhcp6_client_set_mac(link->dhcp6_client, &link->mac);
+ r = sd_rtnl_message_new_link(link->manager->rtnl, &req,
+ RTM_SETLINK, link->ifindex);
if (r < 0) {
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
- return;
+ log_link_error(link, "Could not allocate RTM_SETLINK message");
+ return r;
}
- r = sd_dhcp6_client_set_index(link->dhcp6_client, link->ifindex);
+ r = sd_rtnl_message_link_set_family(req, PF_BRIDGE);
if (r < 0) {
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
- return;
+ log_link_error(link,
+ "Could not set message family %s", strerror(-r));
+ return r;
}
- r = sd_dhcp6_client_set_callback(link->dhcp6_client, dhcp6_handler,
- link);
+ r = sd_rtnl_message_open_container(req, IFLA_PROTINFO);
if (r < 0) {
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
- return;
+ log_link_error(link,
+ "Could not append IFLA_PROTINFO attribute: %s",
+ strerror(-r));
+ return r;
}
- r = sd_dhcp6_client_start(link->dhcp6_client);
- if (r < 0)
- link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
-}
-
-static int link_acquire_conf(Link *link) {
- int r;
-
- assert(link);
- assert(link->network);
- assert(link->manager);
- assert(link->manager->event);
-
- if (link->network->ipv4ll) {
- assert(link->ipv4ll);
-
- log_debug_link(link, "acquiring IPv4 link-local address");
-
- r = sd_ipv4ll_start(link->ipv4ll);
+ if(link->network->cost != 0) {
+ r = sd_rtnl_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost);
if (r < 0) {
- log_warning_link(link, "could not acquire IPv4 "
- "link-local address");
+ log_link_error(link,
+ "Could not append IFLA_BRPORT_COST attribute: %s",
+ strerror(-r));
return r;
}
}
- if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V4)) {
- assert(link->dhcp_client);
-
- log_debug_link(link, "acquiring DHCPv4 lease");
-
- r = sd_dhcp_client_start(link->dhcp_client);
- if (r < 0) {
- log_warning_link(link, "could not acquire DHCPv4 "
- "lease");
- return r;
- }
+ r = sd_rtnl_message_close_container(req);
+ if (r < 0) {
+ log_link_error(link,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
}
- if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V6)) {
- assert(link->icmp6_router_discovery);
-
- log_debug_link(link, "discovering IPv6 routers");
-
- r = sd_icmp6_router_solicitation_start(link->icmp6_router_discovery);
- if (r < 0) {
- log_warning_link(link,
- "could not start IPv6 router discovery");
- return r;
- }
+ r = sd_rtnl_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL);
+ if (r < 0) {
+ log_link_error(link,
+ "Could not send rtnetlink message: %s",
+ strerror(-r));
+ return r;
}
- return 0;
-}
-
-bool link_has_carrier(unsigned flags, uint8_t operstate) {
- /* see Documentation/networking/operstates.txt in the kernel sources */
-
- if (operstate == IF_OPER_UP)
- return true;
-
- if (operstate == IF_OPER_UNKNOWN)
- /* operstate may not be implemented, so fall back to flags */
- if ((flags & IFF_LOWER_UP) && !(flags & IFF_DORMANT))
- return true;
+ link_ref(link);
- return false;
+ return r;
}
-#define FLAG_STRING(string, flag, old, new) \
- (((old ^ new) & flag) \
- ? ((old & flag) ? (" -" string) : (" +" string)) \
- : "")
-
-static int link_update_flags(Link *link, sd_rtnl_message *m) {
- unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags;
- uint8_t operstate;
- bool carrier_gained = false, carrier_lost = false;
+static void lldp_handler(sd_lldp *lldp, int event, void *userdata) {
+ Link *link = userdata;
int r;
assert(link);
+ assert(link->network);
+ assert(link->manager);
- r = sd_rtnl_message_link_get_flags(m, &flags);
- if (r < 0) {
- log_warning_link(link, "Could not get link flags");
- return r;
- }
+ if (event != UPDATE_INFO)
+ return;
- r = sd_rtnl_message_read_u8(m, IFLA_OPERSTATE, &operstate);
+ r = sd_lldp_save(link->lldp, link->lldp_file);
if (r < 0)
- /* if we got a message without operstate, take it to mean
- the state was unchanged */
- operstate = link->kernel_operstate;
+ log_link_warning(link, "could not save LLDP");
- if ((link->flags == flags) && (link->kernel_operstate == operstate))
- return 0;
+}
+
+static int link_acquire_conf(Link *link) {
+ int r;
- if (link->flags != flags) {
- log_debug_link(link, "flags change:%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
- FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags),
- FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags),
- FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags),
- FLAG_STRING("UP", IFF_UP, link->flags, flags),
- FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags),
- FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags),
- FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags),
- FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags),
- FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags),
- FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags),
- FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags),
- FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags),
- FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags),
- FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags),
- FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags),
- FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags),
- FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags),
- FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags),
- FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags));
+ assert(link);
+ assert(link->network);
+ assert(link->manager);
+ assert(link->manager->event);
- unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP |
- IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING |
- IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT |
- IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL |
- IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP |
- IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO);
- unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags);
- unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags);
+ if (link_ipv4ll_enabled(link)) {
+ assert(link->ipv4ll);
- /* link flags are currently at most 18 bits, let's align to
- * printing 20 */
- if (unknown_flags_added)
- log_debug_link(link,
- "unknown link flags gained: %#.5x (ignoring)",
- unknown_flags_added);
+ log_link_debug(link, "acquiring IPv4 link-local address");
- if (unknown_flags_removed)
- log_debug_link(link,
- "unknown link flags lost: %#.5x (ignoring)",
- unknown_flags_removed);
+ r = sd_ipv4ll_start(link->ipv4ll);
+ if (r < 0) {
+ log_link_warning(link, "could not acquire IPv4 "
+ "link-local address");
+ return r;
+ }
}
- carrier_gained = !link_has_carrier(link->flags, link->kernel_operstate) &&
- link_has_carrier(flags, operstate);
- carrier_lost = link_has_carrier(link->flags, link->kernel_operstate) &&
- !link_has_carrier(flags, operstate);
+ if (link_dhcp4_enabled(link)) {
+ assert(link->dhcp_client);
- link->flags = flags;
- link->kernel_operstate = operstate;
+ log_link_debug(link, "acquiring DHCPv4 lease");
- link_save(link);
+ r = sd_dhcp_client_start(link->dhcp_client);
+ if (r < 0) {
+ log_link_warning(link, "could not acquire DHCPv4 "
+ "lease");
+ return r;
+ }
+ }
- if (link->state == LINK_STATE_FAILED ||
- link->state == LINK_STATE_UNMANAGED)
- return 0;
+ if (link_dhcp6_enabled(link)) {
+ assert(link->icmp6_router_discovery);
- if (carrier_gained) {
- log_info_link(link, "gained carrier");
+ log_link_debug(link, "discovering IPv6 routers");
- if (link->network) {
- r = link_acquire_conf(link);
- if (r < 0) {
- link_enter_failed(link);
- return r;
- }
+ r = sd_icmp6_router_solicitation_start(link->icmp6_router_discovery);
+ if (r < 0) {
+ log_link_warning(link,
+ "could not start IPv6 router discovery");
+ return r;
}
- } else if (carrier_lost) {
- log_info_link(link, "lost carrier");
+ }
- r = link_stop_clients(link);
+ if (link_lldp_enabled(link)) {
+ assert(link->lldp);
+
+ log_link_debug(link, "Starting LLDP");
+
+ r = sd_lldp_start(link->lldp);
if (r < 0) {
- link_enter_failed(link);
+ log_link_warning(link, "could not start LLDP ");
return r;
}
}
return 0;
}
+bool link_has_carrier(Link *link) {
+ /* see Documentation/networking/operstates.txt in the kernel sources */
+
+ if (link->kernel_operstate == IF_OPER_UP)
+ return true;
+
+ if (link->kernel_operstate == IF_OPER_UNKNOWN)
+ /* operstate may not be implemented, so fall back to flags */
+ if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT))
+ return true;
+
+ return false;
+}
+
static int link_up_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
_cleanup_link_unref_ Link *link = userdata;
int r;
if (r < 0) {
/* we warn but don't fail the link, as it may
be brought up later */
- log_struct_link(LOG_WARNING, link,
- "MESSAGE=%-*s: could not bring up interface: %s",
- IFNAMSIZ,
- link->ifname, strerror(-r),
- "ERRNO=%d", -r,
- NULL);
+ log_link_warning_errno(link, -r, "%-*s: could not bring up interface: %m", IFNAMSIZ, link->ifname);
}
return 1;
int r;
assert(link);
+ assert(link->network);
assert(link->manager);
assert(link->manager->rtnl);
- log_debug_link(link, "bringing link up");
+ log_link_debug(link, "bringing link up");
r = sd_rtnl_message_new_link(link->manager->rtnl, &req,
RTM_SETLINK, link->ifindex);
if (r < 0) {
- log_error_link(link, "Could not allocate RTM_SETLINK message");
+ log_link_error(link, "Could not allocate RTM_SETLINK message");
return r;
}
r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP);
if (r < 0) {
- log_error_link(link, "Could not set link flags: %s",
+ log_link_error(link, "Could not set link flags: %s",
strerror(-r));
return r;
}
+ if (link->network->mac) {
+ r = sd_rtnl_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac);
+ if (r < 0) {
+ log_link_error(link, "Could not set MAC address: %s", strerror(-r));
+ return r;
+ }
+ }
+
+ if (link->network->mtu) {
+ r = sd_rtnl_message_append_u32(req, IFLA_MTU, link->network->mtu);
+ if (r < 0) {
+ log_link_error(link, "Could not set MTU: %s", strerror(-r));
+ return r;
+ }
+ }
+
r = sd_rtnl_call_async(link->manager->rtnl, req, link_up_handler, link,
0, NULL);
if (r < 0) {
- log_error_link(link,
+ log_link_error(link,
"Could not send rtnetlink message: %s",
strerror(-r));
return r;
int r;
assert(link);
- assert(link->state == LINK_STATE_ENSLAVING);
assert(link->network);
if (!(link->flags & IFF_UP)) {
}
}
+ if(link->network->bridge) {
+ r = link_set_bridge(link);
+ if (r < 0) {
+ log_link_error(link,
+ "Could not set bridge message: %s",
+ strerror(-r));
+ }
+ }
+
return link_enter_set_addresses(link);
}
int r;
assert(link);
- assert(IN_SET(link->state, LINK_STATE_ENSLAVING, LINK_STATE_FAILED,
- LINK_STATE_LINGER));
assert(link->network);
link->enslaving --;
r = sd_rtnl_message_get_errno(m);
if (r < 0 && r != -EEXIST) {
- log_struct_link(LOG_ERR, link,
- "MESSAGE=%-*s: could not join netdev: %s",
- IFNAMSIZ,
- link->ifname, strerror(-r),
- "ERRNO=%d", -r,
- NULL);
+ log_link_error_errno(link, -r, "%-*s: could not join netdev: %m", IFNAMSIZ, link->ifname);
link_enter_failed(link);
return 1;
} else
- log_debug_link(link, "joined netdev");
+ log_link_debug(link, "joined netdev");
if (link->enslaving <= 0)
link_joined(link);
assert(link->network);
assert(link->state == LINK_STATE_PENDING);
- link->state = LINK_STATE_ENSLAVING;
+ link_set_state(link, LINK_STATE_ENSLAVING);
link_save(link);
return link_joined(link);
if (link->network->bond) {
- log_struct_link(LOG_DEBUG, link,
+ log_link_struct(link, LOG_DEBUG,
"MESSAGE=%-*s: enslaving by '%s'",
IFNAMSIZ,
link->ifname, link->network->bond->ifname,
r = netdev_join(link->network->bond, link, &netdev_join_handler);
if (r < 0) {
- log_struct_link(LOG_WARNING, link,
+ log_link_struct(link, LOG_WARNING,
"MESSAGE=%-*s: could not join netdev '%s': %s",
IFNAMSIZ,
link->ifname, link->network->bond->ifname,
}
if (link->network->bridge) {
- log_struct_link(LOG_DEBUG, link,
+ log_link_struct(link, LOG_DEBUG,
"MESSAGE=%-*s: enslaving by '%s'",
IFNAMSIZ,
link->ifname, link->network->bridge->ifname,
r = netdev_join(link->network->bridge, link,
&netdev_join_handler);
if (r < 0) {
- log_struct_link(LOG_WARNING, link,
+ log_link_struct(link, LOG_WARNING,
"MESSAGE=%-*s: could not join netdev '%s': %s",
IFNAMSIZ,
link->ifname, link->network->bridge->ifname,
}
HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) {
- log_struct_link(LOG_DEBUG, link,
+ log_link_struct(link, LOG_DEBUG,
"MESSAGE=%-*s: enslaving by '%s'",
IFNAMSIZ,
link->ifname, netdev->ifname, NETDEVIF(netdev),
r = netdev_join(netdev, link, &netdev_join_handler);
if (r < 0) {
- log_struct_link(LOG_WARNING, link,
+ log_link_struct(link, LOG_WARNING,
"MESSAGE=%-*s: could not join netdev '%s': %s",
IFNAMSIZ,
link->ifname, netdev->ifname,
return 0;
}
+static int link_set_ipv4_forward(Link *link) {
+ const char *p = NULL;
+ bool b;
+ int r;
+
+ b = link_ipv4_forward_enabled(link);
+
+ p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding");
+ r = write_string_file_no_create(p, one_zero(b));
+ if (r < 0)
+ log_link_warning_errno(link, r, "Cannot configure IPv4 forwarding for interface %s: %m", link->ifname);
+
+ if (b) {
+ _cleanup_free_ char *buf = NULL;
+
+ /* If IP forwarding is turned on for this interface,
+ * then propagate this to the global setting. Given
+ * that turning this on has side-effects on other
+ * fields, we'll try to avoid doing this unless
+ * necessary, hence check the previous value
+ * first. Note that we never turn this option off
+ * again, since all interfaces we manage do not do
+ * forwarding anyway by default, and ownership rules
+ * of this control are so unclear. */
+
+ r = read_one_line_file("/proc/sys/net/ipv4/ip_forward", &buf);
+ if (r < 0)
+ log_link_warning_errno(link, r, "Cannot read /proc/sys/net/ipv4/ip_forward: %m");
+ else if (!streq(buf, "1")) {
+ r = write_string_file_no_create("/proc/sys/net/ipv4/ip_forward", "1");
+ if (r < 0)
+ log_link_warning_errno(link, r, "Cannot write /proc/sys/net/ipv4/ip_forward: %m");
+ }
+ }
+
+ return 0;
+}
+
+static int link_set_ipv6_forward(Link *link) {
+ const char *p = NULL;
+ int r;
+
+ p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/forwarding");
+ r = write_string_file_no_create(p, one_zero(link_ipv6_forward_enabled(link)));
+ if (r < 0)
+ log_link_warning_errno(link, r, "Cannot configure IPv6 forwarding for interface: %m");
+
+ return 0;
+}
+
static int link_configure(Link *link) {
int r;
assert(link->network);
assert(link->state == LINK_STATE_PENDING);
- if (link->network->ipv4ll) {
+ r = link_set_bridge_fdb(link);
+ if (r < 0)
+ return r;
+
+ r = link_set_ipv4_forward(link);
+ if (r < 0)
+ return r;
+
+ r = link_set_ipv6_forward(link);
+ if (r < 0)
+ return r;
+
+ if (link_ipv4ll_enabled(link)) {
r = ipv4ll_configure(link);
if (r < 0)
return r;
}
- if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V4)) {
+ if (link_dhcp4_enabled(link)) {
r = dhcp4_configure(link);
if (r < 0)
return r;
}
- if (link->network->dhcp_server) {
+ if (link_dhcp4_server_enabled(link)) {
r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex);
if (r < 0)
return r;
return r;
}
- if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V6)) {
- r = sd_icmp6_nd_new(&link->icmp6_router_discovery);
- if (r < 0)
- return r;
-
- r = sd_icmp6_nd_attach_event(link->icmp6_router_discovery,
- NULL, 0);
+ if (link_dhcp6_enabled(link)) {
+ r = icmp6_configure(link);
if (r < 0)
return r;
+ }
- r = sd_icmp6_nd_set_mac(link->icmp6_router_discovery,
- &link->mac);
+ if (link_lldp_enabled(link)) {
+ r = sd_lldp_new(link->ifindex, link->ifname, &link->mac, &link->lldp);
if (r < 0)
return r;
- r = sd_icmp6_nd_set_index(link->icmp6_router_discovery,
- link->ifindex);
+ r = sd_lldp_attach_event(link->lldp, NULL, 0);
if (r < 0)
return r;
- r = sd_icmp6_nd_set_callback(link->icmp6_router_discovery,
- icmp6_router_handler, link);
+ r = sd_lldp_set_callback(link->lldp,
+ lldp_handler, link);
if (r < 0)
return r;
}
- if (link_has_carrier(link->flags, link->kernel_operstate)) {
+ if (link_has_carrier(link)) {
r = link_acquire_conf(link);
if (r < 0)
return r;
if (link->state != LINK_STATE_PENDING)
return 1;
- log_debug_link(link, "link state is up-to-date");
+ log_link_debug(link, "link state is up-to-date");
r = network_get(link->manager, link->udev_device, link->ifname,
&link->mac, &network);
} else if (r < 0)
return r;
+ if (link->flags & IFF_LOOPBACK) {
+ if (network->ipv4ll)
+ log_link_debug(link, "ignoring IPv4LL for loopback link");
+
+ if (network->dhcp != ADDRESS_FAMILY_NO)
+ log_link_debug(link, "ignoring DHCP clients for loopback link");
+
+ if (network->dhcp_server)
+ log_link_debug(link, "ignoring DHCP server for loopback link");
+ }
+
r = network_apply(link->manager, network, link);
if (r < 0)
return r;
if (link->udev_device)
return 0;
- log_debug_link(link, "udev initialized link");
+ log_link_debug(link, "udev initialized link");
link->udev_device = udev_device_ref(device);
return 0;
}
-int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message,
- void *userdata) {
+static Address* link_get_equal_address(Link *link, Address *needle) {
+ Address *i;
+
+ assert(link);
+ assert(needle);
+
+ LIST_FOREACH(addresses, i, link->addresses)
+ if (address_equal(i, needle))
+ return i;
+
+ return NULL;
+}
+
+int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) {
Manager *m = userdata;
Link *link = NULL;
uint16_t type;
_cleanup_address_free_ Address *address = NULL;
- Address *ad;
- char buf[INET6_ADDRSTRLEN];
- char valid_buf[FORMAT_TIMESPAN_MAX];
+ Address *existing;
+ char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX];
const char *valid_str = NULL;
- bool address_dropped = false;
int r, ifindex;
assert(rtnl);
assert(message);
assert(m);
+ if (sd_rtnl_message_is_error(message)) {
+ r = sd_rtnl_message_get_errno(message);
+ if (r < 0)
+ log_warning_errno(r, "rtnl: failed to receive address: %m");
+
+ return 0;
+ }
+
r = sd_rtnl_message_get_type(message, &type);
if (r < 0) {
log_warning("rtnl: could not get message type");
}
r = sd_rtnl_message_addr_get_ifindex(message, &ifindex);
- if (r < 0 || ifindex <= 0) {
- log_warning("rtnl: received address message without valid ifindex, ignoring");
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get ifindex: %m");
+ return 0;
+ } else if (ifindex <= 0) {
+ log_warning("rtnl: received address message with invalid ifindex: %d", ifindex);
return 0;
} else {
r = link_get(m, ifindex, &link);
if (r < 0 || !link) {
- log_warning("rtnl: received address for a nonexistent link, ignoring");
+ /* when enumerating we might be out of sync, but we will
+ * get the address again, so just ignore it */
+ if (!m->enumerating)
+ log_warning("rtnl: received address for nonexistent link (%d), ignoring", ifindex);
return 0;
}
}
r = sd_rtnl_message_addr_get_family(message, &address->family);
if (r < 0 || !IN_SET(address->family, AF_INET, AF_INET6)) {
- log_warning_link(link,
- "rtnl: received address with invalid family, ignoring");
+ log_link_warning(link, "rtnl: received address with invalid family, ignoring");
return 0;
}
r = sd_rtnl_message_addr_get_prefixlen(message, &address->prefixlen);
if (r < 0) {
- log_warning_link(link,
- "rtnl: received address with invalid prefixlen, ignoring");
+ log_link_warning(link, "rtnl: received address with invalid prefixlen, ignoring");
return 0;
}
r = sd_rtnl_message_addr_get_scope(message, &address->scope);
if (r < 0) {
- log_warning_link(link,
- "rtnl: received address with invalid scope, ignoring");
+ log_link_warning(link, "rtnl: received address with invalid scope, ignoring");
+ return 0;
+ }
+
+ r = sd_rtnl_message_addr_get_flags(message, &address->flags);
+ if (r < 0) {
+ log_link_warning(link, "rtnl: received address with invalid flags, ignoring");
return 0;
}
switch (address->family) {
case AF_INET:
- r = sd_rtnl_message_read_in_addr(message, IFA_LOCAL,
- &address->in_addr.in);
+ r = sd_rtnl_message_read_in_addr(message, IFA_LOCAL, &address->in_addr.in);
if (r < 0) {
- log_warning_link(link,
- "rtnl: received address without valid address, ignoring");
+ log_link_warning(link, "rtnl: received address without valid address, ignoring");
return 0;
}
break;
case AF_INET6:
- r = sd_rtnl_message_read_in6_addr(message, IFA_ADDRESS,
- &address->in_addr.in6);
+ r = sd_rtnl_message_read_in6_addr(message, IFA_ADDRESS, &address->in_addr.in6);
if (r < 0) {
- log_warning_link(link,
- "rtnl: received address without valid address, ignoring");
+ log_link_warning(link, "rtnl: received address without valid address, ignoring");
return 0;
}
assert_not_reached("invalid address family");
}
- if (!inet_ntop(address->family, &address->in_addr, buf,
- INET6_ADDRSTRLEN)) {
- log_warning_link(link, "could not print address");
+ if (!inet_ntop(address->family, &address->in_addr, buf, INET6_ADDRSTRLEN)) {
+ log_link_warning(link, "could not print address");
return 0;
}
- r = sd_rtnl_message_read_cache_info(message, IFA_CACHEINFO,
- &address->cinfo);
+ r = sd_rtnl_message_read_cache_info(message, IFA_CACHEINFO, &address->cinfo);
if (r >= 0) {
if (address->cinfo.ifa_valid == CACHE_INFO_INFINITY_LIFE_TIME)
valid_str = "ever";
USEC_PER_SEC);
}
- LIST_FOREACH(addresses, ad, link->addresses) {
- if (address_equal(ad, address)) {
- LIST_REMOVE(addresses, link->addresses, ad);
+ existing = link_get_equal_address(link, address);
- address_free(ad);
+ switch (type) {
+ case RTM_NEWADDR:
+ if (existing) {
+ log_link_debug(link, "Updating address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str);
- address_dropped = true;
- break;
- }
- }
+ existing->scope = address->scope;
+ existing->flags = address->flags;
+ existing->cinfo = address->cinfo;
- switch (type) {
- case RTM_NEWADDR:
- if (!address_dropped)
- log_debug_link(link, "added address: %s/%u (valid for %s)",
- buf, address->prefixlen,
- strna(valid_str));
- else
- log_debug_link(link, "updated address: %s/%u (valid for %s)",
- buf, address->prefixlen,
- strna(valid_str));
+ } else {
+ log_link_debug(link, "Adding address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str);
+
+ LIST_PREPEND(addresses, link->addresses, address);
+ address_establish(address, link);
- LIST_PREPEND(addresses, link->addresses, address);
- address = NULL;
+ address = NULL;
- link_save(link);
+ link_save(link);
+ }
break;
+
case RTM_DELADDR:
- if (address_dropped) {
- log_debug_link(link, "removed address: %s/%u (valid for %s)",
- buf, address->prefixlen,
- strna(valid_str));
- link_save(link);
+ if (existing) {
+ log_link_debug(link, "Removing address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str);
+ address_release(existing, link);
+ LIST_REMOVE(addresses, link->addresses, existing);
+ address_free(existing);
} else
- log_warning_link(link,
- "removing non-existent address: %s/%u (valid for %s)",
- buf, address->prefixlen,
- strna(valid_str));
+ log_link_warning(link, "Removing non-existent address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str);
break;
default:
int link_add(Manager *m, sd_rtnl_message *message, Link **ret) {
Link *link;
- _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
_cleanup_udev_device_unref_ struct udev_device *device = NULL;
char ifindex_str[2 + DECIMAL_STR_MAX(int)];
int r;
link = *ret;
- log_debug_link(link, "link %d added", link->ifindex);
-
- r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, link->ifindex,
- 0);
- if (r < 0)
- return r;
-
- r = sd_rtnl_call_async(m->rtnl, req, link_get_address_handler, link, 0,
- NULL);
- if (r < 0)
- return r;
-
- link_ref(link);
+ log_link_debug(link, "link %d added", link->ifindex);
if (detect_container(NULL) <= 0) {
/* not in a container, udev will be around */
sprintf(ifindex_str, "n%d", link->ifindex);
device = udev_device_new_from_device_id(m->udev, ifindex_str);
if (!device) {
- log_warning_link(link,
+ log_link_warning(link,
"could not find udev device: %m");
return -errno;
}
if (udev_device_get_is_initialized(device) <= 0) {
/* not yet ready */
- log_debug_link(link, "link pending udev initialization...");
+ log_link_debug(link, "link pending udev initialization...");
return 0;
}
return 0;
}
+static int link_carrier_gained(Link *link) {
+ int r;
+
+ assert(link);
+
+ if (link->network) {
+ r = link_acquire_conf(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+ }
+
+ return 0;
+}
+
+static int link_carrier_lost(Link *link) {
+ int r;
+
+ assert(link);
+
+ r = link_stop_clients(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+
+ return 0;
+}
+
+int link_carrier_reset(Link *link) {
+ int r;
+
+ assert(link);
+
+ if (link_has_carrier(link)) {
+ r = link_carrier_lost(link);
+ if (r < 0)
+ return r;
+
+ r = link_carrier_gained(link);
+ if (r < 0)
+ return r;
+
+ log_link_info(link, "reset carrier");
+ }
+
+ return 0;
+}
+
+
int link_update(Link *link, sd_rtnl_message *m) {
struct ether_addr mac;
const char *ifname;
uint32_t mtu;
+ bool had_carrier, carrier_gained, carrier_lost;
int r;
assert(link);
if (link->state == LINK_STATE_LINGER) {
link_ref(link);
- log_info_link(link, "link readded");
- link->state = LINK_STATE_ENSLAVING;
+ log_link_info(link, "link readded");
+ link_set_state(link, LINK_STATE_ENSLAVING);
}
r = sd_rtnl_message_read_string(m, IFLA_IFNAME, &ifname);
if (r >= 0 && !streq(ifname, link->ifname)) {
- log_info_link(link, "renamed to %s", ifname);
+ log_link_info(link, "renamed to %s", ifname);
free(link->ifname);
link->ifname = strdup(ifname);
link->mtu = mtu;
if (!link->original_mtu) {
link->original_mtu = mtu;
- log_debug_link(link, "saved original MTU: %"
+ log_link_debug(link, "saved original MTU: %"
PRIu32, link->original_mtu);
}
r = sd_dhcp_client_set_mtu(link->dhcp_client,
link->mtu);
if (r < 0) {
- log_warning_link(link,
+ log_link_warning(link,
"Could not update MTU in DHCP client: %s",
strerror(-r));
return r;
memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet,
ETH_ALEN);
- log_debug_link(link, "MAC address: "
+ log_link_debug(link, "MAC address: "
"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
mac.ether_addr_octet[0],
mac.ether_addr_octet[1],
if (link->ipv4ll) {
r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac);
if (r < 0) {
- log_warning_link(link,
+ log_link_warning(link,
"Could not update MAC address in IPv4LL client: %s",
strerror(-r));
return r;
if (link->dhcp_client) {
r = sd_dhcp_client_set_mac(link->dhcp_client,
- &link->mac);
+ (const uint8_t *) &link->mac,
+ sizeof (link->mac),
+ ARPHRD_ETHER);
if (r < 0) {
- log_warning_link(link,
+ log_link_warning(link,
"Could not update MAC address in DHCP client: %s",
strerror(-r));
return r;
if (link->dhcp6_client) {
r = sd_dhcp6_client_set_mac(link->dhcp6_client,
- &link->mac);
+ (const uint8_t *) &link->mac,
+ sizeof (link->mac),
+ ARPHRD_ETHER);
if (r < 0) {
- log_warning_link(link,
+ log_link_warning(link,
"Could not update MAC address in DHCPv6 client: %s",
strerror(-r));
return r;
}
}
- return link_update_flags(link, m);
+ had_carrier = link_has_carrier(link);
+
+ r = link_update_flags(link, m);
+ if (r < 0)
+ return r;
+
+ carrier_gained = !had_carrier && link_has_carrier(link);
+ carrier_lost = had_carrier && !link_has_carrier(link);
+
+ if (carrier_gained) {
+ log_link_info(link, "gained carrier");
+
+ r = link_carrier_gained(link);
+ if (r < 0)
+ return r;
+ } else if (carrier_lost) {
+ log_link_info(link, "lost carrier");
+
+ r = link_carrier_lost(link);
+ if (r < 0)
+ return r;
+
+ }
+
+ return 0;
}
static void link_update_operstate(Link *link) {
-
+ LinkOperationalState operstate;
assert(link);
if (link->kernel_operstate == IF_OPER_DORMANT)
- link->operstate = LINK_OPERSTATE_DORMANT;
- else if (link_has_carrier(link->flags, link->kernel_operstate)) {
+ operstate = LINK_OPERSTATE_DORMANT;
+ else if (link_has_carrier(link)) {
Address *address;
uint8_t scope = RT_SCOPE_NOWHERE;
/* if we have carrier, check what addresses we have */
LIST_FOREACH(addresses, address, link->addresses) {
+ if (address->flags & (IFA_F_TENTATIVE | IFA_F_DEPRECATED))
+ continue;
+
if (address->scope < scope)
scope = address->scope;
}
if (scope < RT_SCOPE_SITE)
/* universally accessible addresses found */
- link->operstate = LINK_OPERSTATE_ROUTABLE;
+ operstate = LINK_OPERSTATE_ROUTABLE;
else if (scope < RT_SCOPE_HOST)
/* only link or site local addresses found */
- link->operstate = LINK_OPERSTATE_DEGRADED;
+ operstate = LINK_OPERSTATE_DEGRADED;
else
/* no useful addresses found */
- link->operstate = LINK_OPERSTATE_CARRIER;
+ operstate = LINK_OPERSTATE_CARRIER;
} else if (link->flags & IFF_UP)
- link->operstate = LINK_OPERSTATE_NO_CARRIER;
+ operstate = LINK_OPERSTATE_NO_CARRIER;
else
- link->operstate = LINK_OPERSTATE_OFF;
+ operstate = LINK_OPERSTATE_OFF;
+
+ if (link->operstate != operstate) {
+ link->operstate = operstate;
+ link_send_changed(link, "OperationalState", NULL);
+ }
}
int link_save(Link *link) {
char **address, **domain;
bool space;
+ fprintf(f, "NETWORK_FILE=%s\n", link->network->filename);
+
fputs("DNS=", f);
space = false;
STRV_FOREACH(address, link->network->dns) {
if (link->dhcp_lease) {
assert(link->network);
- r = dhcp_lease_save(link->dhcp_lease, link->lease_file);
+ r = sd_dhcp_lease_save(link->dhcp_lease, link->lease_file);
if (r < 0)
goto fail;
} else
unlink(link->lease_file);
+ if (link->lldp) {
+ assert(link->network);
+
+ r = sd_lldp_save(link->lldp, link->lldp_file);
+ if (r < 0)
+ goto fail;
+
+ fprintf(f,
+ "LLDP_FILE=%s\n",
+ link->lldp_file);
+ } else
+ unlink(link->lldp_file);
+
r = fflush_and_check(f);
if (r < 0)
goto fail;
return 0;
fail:
- log_error_link(link, "Failed to save link data to %s: %s", link->state_file, strerror(-r));
+ log_link_error(link, "Failed to save link data to %s: %s", link->state_file, strerror(-r));
unlink(link->state_file);
unlink(temp_path);
return r;
~ianmdlvl / elogind.git / blobdiff