#include <netinet/ether.h>
#include <linux/if.h>
+#include <unistd.h>
#include "networkd.h"
+#include "networkd-netdev.h"
#include "libudev-private.h"
#include "udev-util.h"
#include "util.h"
#include "virt.h"
#include "bus-util.h"
#include "network-internal.h"
+#include "conf-parser.h"
#include "network-util.h"
#include "dhcp-lease-internal.h"
-static int ipv4ll_address_update(Link *link, bool deprecate);
-static bool ipv4ll_is_bound(sd_ipv4ll *ll);
-
static int link_new(Manager *manager, sd_rtnl_message *message, Link **ret) {
_cleanup_link_unref_ Link *link = NULL;
uint16_t type;
- char *ifname;
+ const char *ifname;
int r, ifindex;
assert(manager);
- assert(manager->links);
assert(message);
assert(ret);
if (!link->ifname)
return -ENOMEM;
- r = asprintf(&link->state_file, "/run/systemd/network/links/%"PRIu64,
- link->ifindex);
+ 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");
+
+ r = asprintf(&link->state_file, "/run/systemd/netif/links/%d", link->ifindex);
if (r < 0)
return -ENOMEM;
- r = asprintf(&link->lease_file, "/run/systemd/network/leases/%"PRIu64,
- link->ifindex);
+ r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", link->ifindex);
if (r < 0)
return -ENOMEM;
- r = hashmap_put(manager->links, &link->ifindex, link);
+ r = hashmap_ensure_allocated(&manager->links, NULL, NULL);
+ if (r < 0)
+ return r;
+
+ r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link);
if (r < 0)
return r;
if (!link)
return;
- assert(link->manager);
-
while ((address = link->addresses)) {
LIST_REMOVE(addresses, link->addresses, address);
address_free(address);
}
+ while ((address = link->pool_addresses)) {
+ LIST_REMOVE(addresses, link->pool_addresses, address);
+ address_free(address);
+ }
+
sd_dhcp_client_unref(link->dhcp_client);
sd_dhcp_lease_unref(link->dhcp_lease);
free(link->lease_file);
sd_ipv4ll_unref(link->ipv4ll);
+ sd_dhcp6_client_unref(link->dhcp6_client);
+ sd_icmp6_nd_unref(link->icmp6_router_discovery);
- hashmap_remove(link->manager->links, &link->ifindex);
+ if (link->manager)
+ hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex));
free(link->ifname);
int link_get(Manager *m, int ifindex, Link **ret) {
Link *link;
- uint64_t ifindex_64;
assert(m);
- assert(m->links);
assert(ifindex);
assert(ret);
- ifindex_64 = ifindex;
- link = hashmap_get(m->links, &ifindex_64);
+ link = hashmap_get(m->links, INT_TO_PTR(ifindex));
if (!link)
return -ENODEV;
return;
}
-static int link_enter_configured(Link *link) {
- assert(link);
- assert(link->state == LINK_STATE_SETTING_ROUTES);
-
- log_info_link(link, "link configured");
-
- link->state = LINK_STATE_CONFIGURED;
-
- link_save(link);
-
- return 0;
-}
-
static void link_enter_unmanaged(Link *link) {
assert(link);
if (!link->network)
return 0;
- if (link->network->dhcp) {
- assert(link->dhcp_client);
-
+ 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", strerror(-r));
}
}
- if (link->network->ipv4ll) {
- assert(link->ipv4ll);
-
+ 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));
}
}
+ 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", strerror(-r));
+ r = k;
+ }
+ }
+
+ if(link->icmp6_router_discovery) {
+
+ 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", strerror(-r));
+ r = k;
+ }
+ }
+
+ k = sd_icmp6_nd_stop(link->icmp6_router_discovery);
+ if (k < 0) {
+ log_warning_link(link, "Could not stop ICMPv6 router discovery: %s", strerror(-r));
+ r = k;
+ }
+ }
+
return r;
}
link_save(link);
}
+static Address* link_find_dhcp_server_address(Link *link) {
+ Address *address;
+
+ assert(link);
+ assert(link->network);
+
+ /* The the first statically configured address if there is any */
+ LIST_FOREACH(addresses, address, link->network->static_addresses) {
+
+ if (address->family != AF_INET)
+ continue;
+
+ if (in_addr_is_null(address->family, &address->in_addr))
+ continue;
+
+ return address;
+ }
+
+ /* If that didn't work, find a suitable address we got from the pool */
+ LIST_FOREACH(addresses, address, link->pool_addresses) {
+ if (address->family != AF_INET)
+ continue;
+
+ return address;
+ }
+
+ return NULL;
+}
+
+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");
+
+ r = sd_dhcp_server_set_address(link->dhcp_server, &address->in_addr.in);
+ 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_save(link);
+
+ return 0;
+}
+
static int route_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
+ _cleanup_link_unref_ Link *link = userdata;
int r;
assert(link->route_messages > 0);
link->route_messages --;
- if (IN_SET(LINK_STATE_FAILED, LINK_STATE_LINGER)) {
- link_unref(link);
+ if (IN_SET(LINK_STATE_FAILED, LINK_STATE_LINGER))
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 route: %s",
+ "MESSAGE=%-*s: could not set route: %s",
IFNAMSIZ,
link->ifname, strerror(-r),
"ERRNO=%d", -r,
link_enter_configured(link);
}
- link_unref(link);
-
return 1;
}
+static int link_set_dhcp_routes(Link *link) {
+ struct sd_dhcp_route *static_routes;
+ int r, n, i;
+
+ assert(link);
+
+ n = sd_dhcp_lease_get_routes(link->dhcp_lease, &static_routes);
+ if (n < 0) {
+ if (n != -ENOENT)
+ log_warning_link(link, "DHCP error: could not get routes: %s", strerror(-n));
+ return n;
+ }
+
+ for (i = 0; i < n; i++) {
+ _cleanup_route_free_ Route *route = NULL;
+
+ r = route_new_dynamic(&route, RTPROT_DHCP);
+ if (r < 0) {
+ log_error_link(link, "Could not allocate route: %s",
+ strerror(-r));
+ return r;
+ }
+
+ route->family = AF_INET;
+ route->in_addr.in = static_routes[i].gw_addr;
+ route->dst_addr.in = static_routes[i].dst_addr;
+ route->dst_prefixlen = static_routes[i].dst_prefixlen;
+ route->metrics = DHCP_ROUTE_METRIC;
+
+ r = route_configure(route, link, &route_handler);
+ if (r < 0) {
+ log_warning_link(link,
+ "could not set host route: %s", strerror(-r));
+ return r;
+ }
+
+ link->route_messages ++;
+ }
+
+ return 0;
+}
+
+static bool ipv4ll_is_bound(sd_ipv4ll *ll) {
+ int r;
+ struct in_addr addr;
+
+ if (!ll)
+ return false;
+
+ r = sd_ipv4ll_get_address(ll, &addr);
+ if (r < 0)
+ return false;
+
+ return true;
+}
+
static int link_enter_set_routes(Link *link) {
Route *rt;
int r;
link->state = LINK_STATE_SETTING_ROUTES;
- if (!link->network->static_routes && !link->dhcp_lease &&
- (!link->ipv4ll || ipv4ll_is_bound(link->ipv4ll) == false))
+ if (!link->network->static_routes &&
+ !link->dhcp_lease &&
+ !ipv4ll_is_bound(link->ipv4ll))
return link_enter_configured(link);
log_debug_link(link, "setting routes");
return r;
}
- link_ref(link);
link->route_messages ++;
}
- if (link->ipv4ll && !link->dhcp_lease) {
+ if (ipv4ll_is_bound(link->ipv4ll)) {
_cleanup_route_free_ Route *route = NULL;
- struct in_addr addr;
- r = sd_ipv4ll_get_address(link->ipv4ll, &addr);
- if (r < 0 && r != -ENOENT) {
- log_warning_link(link, "IPV4LL error: no address: %s",
- strerror(-r));
+ r = route_new_dynamic(&route, RTPROT_STATIC);
+ if (r < 0) {
+ log_error_link(link, "Could not allocate route: %s",
+ strerror(-r));
return r;
}
- if (r != -ENOENT) {
- r = route_new_dynamic(&route);
- if (r < 0) {
- log_error_link(link, "Could not allocate route: %s",
- strerror(-r));
- return r;
- }
-
- route->family = AF_INET;
- route->scope = RT_SCOPE_LINK;
- route->metrics = 99;
-
- r = route_configure(route, link, &route_handler);
- if (r < 0) {
- log_warning_link(link,
- "could not set routes: %s", strerror(-r));
- link_enter_failed(link);
- return r;
- }
+ route->family = AF_INET;
+ route->scope = RT_SCOPE_LINK;
+ route->metrics = IPV4LL_ROUTE_METRIC;
- link_ref(link);
- link->route_messages ++;
+ r = route_configure(route, link, &route_handler);
+ if (r < 0) {
+ log_warning_link(link,
+ "could not set routes: %s", strerror(-r));
+ link_enter_failed(link);
+ return r;
}
+
+ link->route_messages ++;
}
if (link->dhcp_lease) {
r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);
if (r < 0 && r != -ENOENT) {
- log_warning_link(link, "DHCP error: %s", strerror(-r));
+ log_warning_link(link, "DHCP error: could not get gateway: %s",
+ strerror(-r));
return r;
}
if (r >= 0) {
- r = route_new_dynamic(&route);
+ r = route_new_dynamic(&route, RTPROT_DHCP);
if (r < 0) {
log_error_link(link, "Could not allocate route: %s",
strerror(-r));
return r;
}
- r = route_new_dynamic(&route_gw);
+ r = route_new_dynamic(&route_gw, RTPROT_DHCP);
if (r < 0) {
log_error_link(link, "Could not allocate route: %s",
strerror(-r));
route_gw->dst_addr.in = gateway;
route_gw->dst_prefixlen = 32;
route_gw->scope = RT_SCOPE_LINK;
+ route_gw->metrics = DHCP_ROUTE_METRIC;
r = route_configure(route_gw, link, &route_handler);
if (r < 0) {
return r;
}
- link_ref(link);
link->route_messages ++;
route->family = AF_INET;
route->in_addr.in = gateway;
+ route->metrics = DHCP_ROUTE_METRIC;
r = route_configure(route, link, &route_handler);
if (r < 0) {
return r;
}
- link_ref(link);
link->route_messages ++;
}
+
+ if (link->network->dhcp_routes)
+ link_set_dhcp_routes(link);
}
if (link->route_messages == 0) {
}
static int route_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
+ _cleanup_link_unref_ Link *link = userdata;
int r;
assert(m);
assert(link);
assert(link->ifname);
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) {
- link_unref(link);
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
- }
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",
+ "MESSAGE=%-*s: could not drop route: %s",
IFNAMSIZ,
link->ifname, strerror(-r),
"ERRNO=%d", -r,
NULL);
- link_unref(link);
+ return 1;
+}
- return 0;
+static 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));
+ }
+
+ return 1;
}
static int address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
+ _cleanup_link_unref_ Link *link = userdata;
int r;
+ assert(rtnl);
assert(m);
assert(link);
assert(link->ifname);
link->addr_messages --;
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) {
- link_unref(link);
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
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",
+ "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);
+ }
if (link->addr_messages == 0) {
log_debug_link(link, "addresses set");
link_enter_set_routes(link);
}
- link_unref(link);
-
return 1;
}
static int link_enter_set_addresses(Link *link) {
Address *ad;
int r;
+ uint32_t lifetime = CACHE_INFO_INFINITY_LIFE_TIME;
assert(link);
assert(link->network);
link->state = LINK_STATE_SETTING_ADDRESSES;
- if (!link->network->static_addresses && !link->dhcp_lease &&
- (!link->ipv4ll || ipv4ll_is_bound(link->ipv4ll) == false))
+ if (!link->network->static_addresses &&
+ !link->dhcp_lease &&
+ !ipv4ll_is_bound(link->ipv4ll))
return link_enter_set_routes(link);
log_debug_link(link, "setting addresses");
return r;
}
- link_ref(link);
link->addr_messages ++;
}
- if (link->ipv4ll && !link->dhcp_lease) {
+ if (link->ipv4ll) {
_cleanup_address_free_ Address *ll_addr = NULL;
struct in_addr addr;
return r;
}
- link_ref(link);
link->addr_messages ++;
}
}
return r;
}
+ if (!link->network->dhcp_critical) {
+ r = sd_dhcp_lease_get_lifetime(link->dhcp_lease,
+ &lifetime);
+ if (r < 0) {
+ log_warning_link(link, "DHCP error: no lifetime: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
r = sd_dhcp_lease_get_netmask(link->dhcp_lease, &netmask);
if (r < 0) {
log_warning_link(link, "DHCP error: no netmask: %s",
address->family = AF_INET;
address->in_addr.in = addr;
+ address->cinfo.ifa_prefered = lifetime;
+ address->cinfo.ifa_valid = lifetime;
address->prefixlen = prefixlen;
address->broadcast.s_addr = addr.s_addr | ~netmask.s_addr;
- r = address_configure(address, link, &address_handler);
+ /* use update rather than configure so that we will update the lifetime
+ of an existing address if it has already been configured */
+ r = address_update(address, link, &address_handler);
if (r < 0) {
log_warning_link(link,
"could not set addresses: %s", strerror(-r));
return r;
}
- link_ref(link);
link->addr_messages ++;
}
return 0;
}
-static int address_update_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
- int r;
-
- assert(m);
- assert(link);
- assert(link->ifname);
-
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) {
- link_unref(link);
- return 1;
- }
-
- r = sd_rtnl_message_get_errno(m);
- if (r < 0 && r != -ENOENT)
- log_struct_link(LOG_WARNING, link,
- "MESSAGE=%*s: could not update address: %s",
- IFNAMSIZ,
- link->ifname, strerror(-r),
- "ERRNO=%d", -r,
- NULL);
-
- link_unref(link);
-
- return 0;
-}
-
static int address_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
+ _cleanup_link_unref_ Link *link = userdata;
int r;
assert(m);
assert(link);
assert(link->ifname);
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) {
- link_unref(link);
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
- }
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",
+ "MESSAGE=%-*s: could not drop address: %s",
IFNAMSIZ,
link->ifname, strerror(-r),
"ERRNO=%d", -r,
NULL);
- link_unref(link);
-
- return 0;
+ return 1;
}
static int set_hostname_handler(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
- Link *link = userdata;
+ _cleanup_link_unref_ Link *link = userdata;
int r;
assert(link);
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) {
- link_unref(link);
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
- }
r = sd_bus_message_get_errno(m);
if (r < 0)
- log_warning_link(link, "Could not set hostname: %s", strerror(-r));
-
- link_unref(link);
+ r = -r;
+ if (r > 0)
+ log_warning_link(link, "Could not set hostname: %s", strerror(r));
return 1;
}
return r;
r = sd_bus_call_async(link->manager->bus, NULL, m, set_hostname_handler, link, 0);
- if (r < 0)
+ if (r < 0) {
log_error_link(link, "Could not set transient hostname: %s", strerror(-r));
+ return r;
+ }
link_ref(link);
- return r;
+ return 0;
}
static int set_mtu_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
+ _cleanup_link_unref_ Link *link = userdata;
int r;
assert(m);
assert(link);
assert(link->ifname);
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) {
- link_unref(link);
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
- }
r = sd_rtnl_message_get_errno(m);
if (r < 0)
log_struct_link(LOG_WARNING, link,
- "MESSAGE=%s: could not set MTU: %s",
- link->ifname, strerror(-r),
+ "MESSAGE=%-*s: could not set MTU: %s",
+ IFNAMSIZ, link->ifname, strerror(-r),
"ERRNO=%d", -r,
NULL);
- link_unref(link);
-
return 1;
}
return r;
}
- link_unref(link);
+ link_ref(link);
return 0;
}
static int dhcp_lease_lost(Link *link) {
_cleanup_address_free_ Address *address = NULL;
- _cleanup_route_free_ Route *route_gw = NULL;
- _cleanup_route_free_ Route *route = NULL;
struct in_addr addr;
struct in_addr netmask;
struct in_addr gateway;
log_warning_link(link, "DHCP lease lost");
+ if (link->network->dhcp_routes) {
+ struct sd_dhcp_route *routes;
+ int n, i;
+
+ n = sd_dhcp_lease_get_routes(link->dhcp_lease, &routes);
+ if (n >= 0) {
+ for (i = 0; i < n; i++) {
+ _cleanup_route_free_ Route *route = NULL;
+
+ r = route_new_dynamic(&route, RTPROT_UNSPEC);
+ if (r >= 0) {
+ route->family = AF_INET;
+ route->in_addr.in = routes[i].gw_addr;
+ route->dst_addr.in = routes[i].dst_addr;
+ route->dst_prefixlen = routes[i].dst_prefixlen;
+
+ route_drop(route, link, &route_drop_handler);
+ }
+ }
+ }
+ }
+
r = address_new_dynamic(&address);
if (r >= 0) {
r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway);
if (r >= 0) {
- r = route_new_dynamic(&route_gw);
+ _cleanup_route_free_ Route *route_gw = NULL;
+ _cleanup_route_free_ Route *route = NULL;
+
+ r = route_new_dynamic(&route_gw, RTPROT_UNSPEC);
if (r >= 0) {
route_gw->family = AF_INET;
route_gw->dst_addr.in = gateway;
route_gw->scope = RT_SCOPE_LINK;
route_drop(route_gw, link, &route_drop_handler);
- link_ref(link);
}
- r = route_new_dynamic(&route);
+ r = route_new_dynamic(&route, RTPROT_UNSPEC);
if (r >= 0) {
route->family = AF_INET;
route->in_addr.in = gateway;
route_drop(route, link, &route_drop_handler);
- link_ref(link);
}
}
address->prefixlen = prefixlen;
address_drop(address, link, &address_drop_handler);
- link_ref(link);
}
if (link->network->dhcp_mtu) {
return 0;
}
+static int dhcp_lease_renew(sd_dhcp_client *client, Link *link) {
+ sd_dhcp_lease *lease;
+ int r;
+
+ r = sd_dhcp_client_get_lease(client, &lease);
+ if (r < 0) {
+ log_warning_link(link, "DHCP error: no lease %s",
+ strerror(-r));
+ return r;
+ }
+
+ sd_dhcp_lease_unref(link->dhcp_lease);
+ link->dhcp_lease = lease;
+
+ link_enter_set_addresses(link);
+
+ return 0;
+}
+
static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) {
sd_dhcp_lease *lease;
struct in_addr address;
r = sd_dhcp_lease_get_router(lease, &gateway);
if (r < 0 && r != -ENOENT) {
- log_warning_link(link, "DHCP error: %s", strerror(-r));
+ log_warning_link(link, "DHCP error: could not get gateway: %s",
+ strerror(-r));
return r;
}
if (r >= 0)
log_struct_link(LOG_INFO, link,
- "MESSAGE=%*s: DHCPv4 address %u.%u.%u.%u/%u via %u.%u.%u.%u",
+ "MESSAGE=%-*s: DHCPv4 address %u.%u.%u.%u/%u via %u.%u.%u.%u",
IFNAMSIZ,
link->ifname,
ADDRESS_FMT_VAL(address),
NULL);
else
log_struct_link(LOG_INFO, link,
- "MESSAGE=%*s: DHCPv4 address %u.%u.%u.%u/%u",
+ "MESSAGE=%-*s: DHCPv4 address %u.%u.%u.%u/%u",
IFNAMSIZ,
link->ifname,
ADDRESS_FMT_VAL(address),
return;
switch (event) {
- case DHCP_EVENT_NO_LEASE:
- log_debug_link(link, "IP address in use.");
- break;
case DHCP_EVENT_EXPIRED:
case DHCP_EVENT_STOP:
case DHCP_EVENT_IP_CHANGE:
}
}
- if (event == DHCP_EVENT_EXPIRED && link->network->ipv4ll) {
- if (!sd_ipv4ll_is_running(link->ipv4ll))
- r = sd_ipv4ll_start(link->ipv4ll);
- else if (ipv4ll_is_bound(link->ipv4ll))
- r = ipv4ll_address_update(link, false);
- if (r < 0) {
- link_enter_failed(link);
- return;
- }
+ break;
+ case DHCP_EVENT_RENEW:
+ r = dhcp_lease_renew(client, link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return;
}
-
break;
case DHCP_EVENT_IP_ACQUIRE:
r = dhcp_lease_acquired(client, link);
link_enter_failed(link);
return;
}
- if (link->ipv4ll) {
- if (ipv4ll_is_bound(link->ipv4ll))
- r = ipv4ll_address_update(link, true);
- else
- r = sd_ipv4ll_stop(link->ipv4ll);
- if (r < 0) {
- link_enter_failed(link);
- return;
- }
- }
break;
default:
if (event < 0)
- log_warning_link(link, "DHCP error: %s", strerror(-event));
+ log_warning_link(link, "DHCP error: client failed: %s", strerror(-event));
else
log_warning_link(link, "DHCP unknown event: %d", event);
break;
return;
}
-static int ipv4ll_address_update(Link *link, bool deprecate) {
- int r;
- struct in_addr addr;
-
- assert(link);
-
- r = sd_ipv4ll_get_address(link->ipv4ll, &addr);
- if (r >= 0) {
- _cleanup_address_free_ Address *address = NULL;
-
- log_debug_link(link, "IPv4 link-local %s %u.%u.%u.%u",
- deprecate ? "deprecate" : "approve",
- ADDRESS_FMT_VAL(addr));
-
- r = address_new_dynamic(&address);
- if (r < 0) {
- log_error_link(link, "Could not allocate address: %s", strerror(-r));
- return r;
- }
-
- address->family = AF_INET;
- address->in_addr.in = addr;
- address->prefixlen = 16;
- address->scope = RT_SCOPE_LINK;
- address->cinfo.ifa_prefered = deprecate ? 0 : CACHE_INFO_INFINITY_LIFE_TIME;
- address->broadcast.s_addr = address->in_addr.in.s_addr | htonl(0xfffffffflu >> address->prefixlen);
-
- address_update(address, link, &address_update_handler);
- link_ref(link);
- }
-
- return 0;
-
-}
-
static int ipv4ll_address_lost(Link *link) {
int r;
struct in_addr addr;
address->scope = RT_SCOPE_LINK;
address_drop(address, link, &address_drop_handler);
- link_ref(link);
- r = route_new_dynamic(&route);
+ r = route_new_dynamic(&route, RTPROT_UNSPEC);
if (r < 0) {
log_error_link(link, "Could not allocate route: %s",
strerror(-r));
route->metrics = 99;
route_drop(route, link, &route_drop_handler);
- link_ref(link);
}
return 0;
}
-static bool ipv4ll_is_bound(sd_ipv4ll *ll) {
- int r;
- struct in_addr addr;
-
- assert(ll);
-
- r = sd_ipv4ll_get_address(ll, &addr);
- if (r < 0)
- return false;
- return true;
-}
-
static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) {
struct in_addr address;
int r;
return r;
log_struct_link(LOG_INFO, link,
- "MESSAGE=%*s: IPv4 link-local address %u.%u.%u.%u",
+ "MESSAGE=%-*s: IPv4 link-local address %u.%u.%u.%u",
IFNAMSIZ,
link->ifname,
ADDRESS_FMT_VAL(address),
assert(link->network);
assert(link->manager);
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return;
+
+ switch(event) {
+ case IPV4LL_EVENT_STOP:
+ case IPV4LL_EVENT_CONFLICT:
+ r = ipv4ll_address_lost(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return;
+ }
+ break;
+ case IPV4LL_EVENT_BIND:
+ r = ipv4ll_address_claimed(ll, link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return;
+ }
+ break;
+ default:
+ if (event < 0)
+ log_warning_link(link, "IPv4 link-local error: %s", strerror(-event));
+ else
+ log_warning_link(link, "IPv4 link-local unknown event: %d", event);
+ break;
+ }
+}
+
+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;
+ 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;
+ }
+
+ r = sd_dhcp6_client_set_mac(link->dhcp6_client, &link->mac);
+ if (r < 0) {
+ link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
return;
+ }
- switch(event) {
- case IPV4LL_EVENT_STOP:
- case IPV4LL_EVENT_CONFLICT:
- r = ipv4ll_address_lost(link);
- if (r < 0) {
- link_enter_failed(link);
- return;
- }
- break;
- case IPV4LL_EVENT_BIND:
- r = ipv4ll_address_claimed(ll, link);
- if (r < 0) {
- link_enter_failed(link);
- return;
- }
- break;
- default:
- if (event < 0)
- log_warning_link(link, "IPv4 link-local error: %s", strerror(-event));
- else
- log_warning_link(link, "IPv4 link-local unknown event: %d", event);
- break;
+ r = sd_dhcp6_client_set_index(link->dhcp6_client, link->ifindex);
+ if (r < 0) {
+ link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
+ return;
+ }
+
+ r = sd_dhcp6_client_set_callback(link->dhcp6_client, dhcp6_handler,
+ link);
+ if (r < 0) {
+ link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client);
+ return;
}
+
+ 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) {
}
}
- if (link->network->dhcp) {
+ if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V4)) {
assert(link->dhcp_client);
log_debug_link(link, "acquiring DHCPv4 lease");
}
}
+ 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;
+ }
+ }
+
return 0;
}
if (r < 0)
/* if we got a message without operstate, take it to mean
the state was unchanged */
- operstate = link->operstate;
+ operstate = link->kernel_operstate;
- if ((link->flags == flags) && (link->operstate == operstate))
+ if ((link->flags == flags) && (link->kernel_operstate == operstate))
return 0;
if (link->flags != flags) {
unknown_flags_removed);
}
- carrier_gained = !link_has_carrier(link->flags, link->operstate) &&
+ carrier_gained = !link_has_carrier(link->flags, link->kernel_operstate) &&
link_has_carrier(flags, operstate);
- carrier_lost = link_has_carrier(link->flags, link->operstate) &&
+ carrier_lost = link_has_carrier(link->flags, link->kernel_operstate) &&
!link_has_carrier(flags, operstate);
link->flags = flags;
- link->operstate = operstate;
+ link->kernel_operstate = operstate;
link_save(link);
}
static int link_up_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
+ _cleanup_link_unref_ Link *link = userdata;
int r;
assert(link);
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) {
- link_unref(link);
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
- }
r = sd_rtnl_message_get_errno(m);
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",
+ "MESSAGE=%-*s: could not bring up interface: %s",
IFNAMSIZ,
link->ifname, strerror(-r),
"ERRNO=%d", -r,
NULL);
}
- link_unref(link);
-
return 1;
}
return 0;
}
-static int link_enslaved(Link *link) {
+static int link_joined(Link *link) {
int r;
assert(link);
}
}
- if (!link->network->dhcp && !link->network->ipv4ll)
- return link_enter_set_addresses(link);
-
- return 0;
+ return link_enter_set_addresses(link);
}
-static int enslave_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
+static int netdev_join_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ _cleanup_link_unref_ Link *link = userdata;
int r;
assert(link);
link->enslaving --;
- if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) {
- link_unref(link);
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
- }
r = sd_rtnl_message_get_errno(m);
- if (r < 0) {
+ if (r < 0 && r != -EEXIST) {
log_struct_link(LOG_ERR, link,
- "MESSAGE=%*s: could not enslave: %s",
+ "MESSAGE=%-*s: could not join netdev: %s",
IFNAMSIZ,
link->ifname, strerror(-r),
"ERRNO=%d", -r,
NULL);
link_enter_failed(link);
- link_unref(link);
return 1;
- }
-
- log_debug_link(link, "enslaved");
-
- if (link->enslaving == 0)
- link_enslaved(link);
+ } else
+ log_debug_link(link, "joined netdev");
- link_unref(link);
+ if (link->enslaving <= 0)
+ link_joined(link);
return 1;
}
-static int link_enter_enslave(Link *link) {
- NetDev *vlan, *macvlan;
+static int link_enter_join_netdev(Link *link) {
+ NetDev *netdev;
Iterator i;
int r;
if (!link->network->bridge &&
!link->network->bond &&
- !link->network->tunnel &&
- hashmap_isempty(link->network->vlans) &&
- hashmap_isempty(link->network->macvlans))
- return link_enslaved(link);
+ hashmap_isempty(link->network->stacked_netdevs))
+ return link_joined(link);
if (link->network->bond) {
log_struct_link(LOG_DEBUG, link,
- "MESSAGE=%*s: enslaving by '%s'",
+ "MESSAGE=%-*s: enslaving by '%s'",
IFNAMSIZ,
link->ifname, link->network->bond->ifname,
- NETDEV(link->network->bond),
+ NETDEVIF(link->network->bond),
NULL);
- r = netdev_enslave(link->network->bond, link, &enslave_handler);
+ r = netdev_join(link->network->bond, link, &netdev_join_handler);
if (r < 0) {
log_struct_link(LOG_WARNING, link,
- "MESSAGE=%*s: could not enslave by '%s': %s",
+ "MESSAGE=%-*s: could not join netdev '%s': %s",
IFNAMSIZ,
link->ifname, link->network->bond->ifname, strerror(-r),
- NETDEV(link->network->bond),
+ NETDEVIF(link->network->bond),
NULL);
link_enter_failed(link);
return r;
}
- link_ref(link);
link->enslaving ++;
}
if (link->network->bridge) {
log_struct_link(LOG_DEBUG, link,
- "MESSAGE=%*s: enslaving by '%s'",
+ "MESSAGE=%-*s: enslaving by '%s'",
IFNAMSIZ,
link->ifname, link->network->bridge->ifname,
- NETDEV(link->network->bridge),
+ NETDEVIF(link->network->bridge),
NULL);
- r = netdev_enslave(link->network->bridge, link, &enslave_handler);
+ r = netdev_join(link->network->bridge, link, &netdev_join_handler);
if (r < 0) {
log_struct_link(LOG_WARNING, link,
- "MESSAGE=%*s: could not enslave by '%s': %s",
+ "MESSAGE=%-*s: could not join netdev '%s': %s",
IFNAMSIZ,
link->ifname, link->network->bridge->ifname, strerror(-r),
- NETDEV(link->network->bridge),
- NULL);
- link_enter_failed(link);
- return r;
- }
-
- link_ref(link);
- link->enslaving ++;
- }
-
- if (link->network->tunnel) {
- log_struct_link(LOG_DEBUG, link,
- "MESSAGE=%*s: enslaving by '%s'",
- IFNAMSIZ,
- link->ifname, link->network->tunnel->ifname,
- NETDEV(link->network->tunnel),
- NULL);
-
- r = netdev_enslave(link->network->tunnel, link, &enslave_handler);
- if (r < 0) {
- log_struct_link(LOG_WARNING, link,
- "MESSAGE=%*s: could not enslave by '%s': %s",
- IFNAMSIZ,
- link->ifname, link->network->tunnel->ifname, strerror(-r),
- NETDEV(link->network->tunnel),
+ NETDEVIF(link->network->bridge),
NULL);
link_enter_failed(link);
return r;
}
- link_ref(link);
- link->enslaving ++;
- }
-
- HASHMAP_FOREACH(vlan, link->network->vlans, i) {
- log_struct_link(LOG_DEBUG, link,
- "MESSAGE=%*s: enslaving by '%s'",
- IFNAMSIZ,
- link->ifname, vlan->ifname, NETDEV(vlan), NULL);
-
- r = netdev_enslave(vlan, link, &enslave_handler);
- if (r < 0) {
- log_struct_link(LOG_WARNING, link,
- "MESSAGE=%*s: could not enslave by '%s': %s",
- IFNAMSIZ,
- link->ifname, vlan->ifname, strerror(-r),
- NETDEV(vlan), NULL);
- link_enter_failed(link);
- return r;
- }
-
- link_ref(link);
link->enslaving ++;
}
- HASHMAP_FOREACH(macvlan, link->network->macvlans, i) {
+ HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) {
log_struct_link(LOG_DEBUG, link,
- "MESSAGE=%*s: enslaving by '%s'",
+ "MESSAGE=%-*s: enslaving by '%s'",
IFNAMSIZ,
- link->ifname, macvlan->ifname, NETDEV(macvlan), NULL);
+ link->ifname, netdev->ifname, NETDEVIF(netdev), NULL);
- r = netdev_enslave(macvlan, link, &enslave_handler);
+ r = netdev_join(netdev, link, &netdev_join_handler);
if (r < 0) {
log_struct_link(LOG_WARNING, link,
- "MESSAGE=%*s: could not enslave by '%s': %s",
+ "MESSAGE=%-*s: could not join netdev '%s': %s",
IFNAMSIZ,
- link->ifname, macvlan->ifname, strerror(-r),
- NETDEV(macvlan), NULL);
+ link->ifname, netdev->ifname, strerror(-r),
+ NETDEVIF(netdev), NULL);
link_enter_failed(link);
return r;
}
- link_ref(link);
link->enslaving ++;
}
return r;
}
- if (link->network->dhcp) {
+ if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V4)) {
r = sd_dhcp_client_new(&link->dhcp_client);
if (r < 0)
return r;
if (r < 0)
return r;
+ r = sd_dhcp_client_set_request_broadcast(link->dhcp_client, link->network->dhcp_broadcast);
+ if (r < 0)
+ return r;
+
+ if (link->mtu) {
+ r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu);
+ if (r < 0)
+ return r;
+ }
+
if (link->network->dhcp_mtu) {
- r = sd_dhcp_client_set_request_option(link->dhcp_client, 26);
+ r = sd_dhcp_client_set_request_option(link->dhcp_client, DHCP_OPTION_INTERFACE_MTU);
+ if (r < 0)
+ return r;
+ }
+
+ if (link->network->dhcp_routes) {
+ r = sd_dhcp_client_set_request_option(link->dhcp_client, DHCP_OPTION_STATIC_ROUTE);
+ if (r < 0)
+ return r;
+ r = sd_dhcp_client_set_request_option(link->dhcp_client, DHCP_OPTION_CLASSLESS_STATIC_ROUTE);
+ if (r < 0)
+ return r;
+ }
+
+ if (link->network->dhcp_sendhost) {
+ _cleanup_free_ char *hostname = gethostname_malloc();
+ if (!hostname)
+ return -ENOMEM;
+
+ if (!is_localhost(hostname)) {
+ r = sd_dhcp_client_set_hostname(link->dhcp_client, hostname);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ if (link->network->dhcp_vendor_class_identifier) {
+ r = sd_dhcp_client_set_vendor_class_identifier(link->dhcp_client,
+ link->network->dhcp_vendor_class_identifier);
if (r < 0)
return r;
}
}
- if (link_has_carrier(link->flags, link->operstate)) {
+ if (link->network->dhcp_server) {
+ r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex);
+ if (r < 0)
+ return r;
+
+ r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0);
+ if (r < 0)
+ 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 (r < 0)
+ return r;
+
+ r = sd_icmp6_nd_set_mac(link->icmp6_router_discovery,
+ &link->mac);
+ if (r < 0)
+ return r;
+
+ r = sd_icmp6_nd_set_index(link->icmp6_router_discovery,
+ link->ifindex);
+ if (r < 0)
+ return r;
+
+ r = sd_icmp6_nd_set_callback(link->icmp6_router_discovery,
+ icmp6_router_handler, link);
+ if (r < 0)
+ return r;
+ }
+
+ if (link_has_carrier(link->flags, link->kernel_operstate)) {
r = link_acquire_conf(link);
if (r < 0)
return r;
}
- return link_enter_enslave(link);
+ return link_enter_join_netdev(link);
}
-int link_initialized(Link *link, struct udev_device *device) {
+static int link_initialized_and_synced(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ _cleanup_link_unref_ Link *link = userdata;
Network *network;
int r;
assert(link->manager);
if (link->state != LINK_STATE_INITIALIZING)
- return 0;
-
- if (device)
- link->udev_device = udev_device_ref(device);
+ return 1;
- log_debug_link(link, "udev initialized link");
+ log_debug_link(link, "link state is up-to-date");
- r = network_get(link->manager, device, link->ifname, &link->mac, &network);
+ r = network_get(link->manager, link->udev_device, link->ifname, &link->mac, &network);
if (r == -ENOENT) {
link_enter_unmanaged(link);
- return 0;
+ return 1;
} else if (r < 0)
return r;
if (r < 0)
return r;
+ return 1;
+}
+
+int link_initialized(Link *link, struct udev_device *device) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+ int r;
+
+ assert(link);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+ assert(device);
+
+ if (link->state != LINK_STATE_INITIALIZING)
+ return 0;
+
+ if (link->udev_device)
+ return 0;
+
+ log_debug_link(link, "udev initialized link");
+
+ link->udev_device = udev_device_ref(device);
+
+ /* udev has initialized the link, but we don't know if we have yet processed
+ the NEWLINK messages with the latest state. Do a GETLINK, when it returns
+ we know that the pending NEWLINKs have already been processed and that we
+ are up-to-date */
+
+ r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, link->ifindex);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_call_async(link->manager->rtnl, req, link_initialized_and_synced, link, 0, NULL);
+ if (r < 0)
+ return r;
+
+ link_ref(link);
+
return 0;
}
r = address_new_dynamic(&address);
if (r < 0)
- return 0;
+ return r;
r = sd_rtnl_message_addr_get_family(message, &address->family);
if (r < 0 || !IN_SET(address->family, AF_INET, AF_INET6)) {
r = sd_rtnl_message_addr_get_prefixlen(message, &address->prefixlen);
if (r < 0) {
- log_warning_link(link, "rtnl: recevied address with invalid prefixlen, ignoring");
+ log_warning_link(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");
return 0;
}
case RTM_NEWADDR:
if (!address_dropped)
log_debug_link(link, "added address: %s/%u", buf,
- address->prefixlen);
+ address->prefixlen);
+ else
+ log_debug_link(link, "updated address: %s/%u", buf,
+ address->prefixlen);
LIST_PREPEND(addresses, link->addresses, address);
address = NULL;
+ link_save(link);
+
break;
case RTM_DELADDR:
- if (address_dropped)
+ if (address_dropped) {
log_debug_link(link, "removed address: %s/%u", buf,
- address->prefixlen);
+ address->prefixlen);
+
+ link_save(link);
+ } else
+ log_warning_link(link, "removing non-existent address: %s/%u",
+ buf, address->prefixlen);
break;
default:
return 1;
}
-static int link_get_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
- int r;
-
- assert(rtnl);
- assert(m);
- assert(link);
-
- 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));
- }
-
- return 1;
-}
-
int link_add(Manager *m, sd_rtnl_message *message, Link **ret) {
Link *link;
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
link = *ret;
- log_debug_link(link, "link %"PRIu64" added", link->ifindex);
+ 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)
if (r < 0)
return r;
+ link_ref(link);
+
if (detect_container(NULL) <= 0) {
/* not in a container, udev will be around */
- sprintf(ifindex_str, "n%"PRIu64, link->ifindex);
+ sprintf(ifindex_str, "n%d", link->ifindex);
device = udev_device_new_from_device_id(m->udev, ifindex_str);
if (!device) {
- log_warning_link(link, "could not find udev device");
+ log_warning_link(link, "could not find udev device: %m");
return -errno;
}
log_debug_link(link, "udev initializing link...");
return 0;
}
- }
- r = link_initialized(link, device);
- if (r < 0)
- return r;
+ r = link_initialized(link, device);
+ if (r < 0)
+ return r;
+ } else {
+ /* we are calling a callback directly, so must take a ref */
+ link_ref(link);
+
+ r = link_initialized_and_synced(m->rtnl, NULL, link);
+ if (r < 0)
+ return r;
+ }
return 0;
}
int link_update(Link *link, sd_rtnl_message *m) {
struct ether_addr mac;
- char *ifname;
+ const char *ifname;
+ uint32_t mtu;
int r;
assert(link);
return -ENOMEM;
}
- if (!link->original_mtu) {
- r = sd_rtnl_message_read_u16(m, IFLA_MTU, &link->original_mtu);
- if (r >= 0)
+ r = sd_rtnl_message_read_u32(m, IFLA_MTU, &mtu);
+ if (r >= 0 && mtu > 0) {
+ link->mtu = mtu;
+ if (!link->original_mtu) {
+ link->original_mtu = mtu;
log_debug_link(link, "saved original MTU: %"
- PRIu16, link->original_mtu);
+ PRIu32, link->original_mtu);
+ }
+
+ if (link->dhcp_client) {
+ r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu);
+ if (r < 0) {
+ log_warning_link(link, "Could not update MTU in DHCP client: %s",
+ strerror(-r));
+ return r;
+ }
+ }
}
/* The kernel may broadcast NEWLINK messages without the MAC address
return r;
}
}
+
+ if (link->dhcp6_client) {
+ r = sd_dhcp6_client_set_mac(link->dhcp6_client,
+ &link->mac);
+ if (r < 0) {
+ log_warning_link(link, "Could not update MAC address in DHCPv6 client: %s",
+ strerror(-r));
+ return r;
+ }
+ }
}
}
return link_update_flags(link, m);
}
-static void serialize_addresses(FILE *f, const char *key, Address *address) {
- Address *ad;
-
- assert(f);
- assert(key);
-
- if (!address)
- return;
+static void link_update_operstate(Link *link) {
- fprintf(f, "%s=", key);
+ assert(link);
- LIST_FOREACH(addresses, ad, address) {
- char buf[INET6_ADDRSTRLEN];
+ if (link->kernel_operstate == IF_OPER_DORMANT)
+ link->operstate = LINK_OPERSTATE_DORMANT;
+ else if (link_has_carrier(link->flags, link->kernel_operstate)) {
+ Address *address;
+ uint8_t scope = RT_SCOPE_NOWHERE;
- if (inet_ntop(ad->family, &ad->in_addr, buf, INET6_ADDRSTRLEN))
- fprintf(f, "%s%s", buf, (ad->addresses_next) ? " ": "");
- }
+ /* if we have carrier, check what addresses we have */
+ LIST_FOREACH(addresses, address, link->addresses) {
+ if (address->scope < scope)
+ scope = address->scope;
+ }
- fputs("\n", f);
+ if (scope < RT_SCOPE_SITE)
+ /* universally accessible addresses found */
+ link->operstate = LINK_OPERSTATE_ROUTABLE;
+ else if (scope < RT_SCOPE_HOST)
+ /* only link or site local addresses found */
+ link->operstate = LINK_OPERSTATE_DEGRADED;
+ else
+ /* no useful addresses found */
+ link->operstate = LINK_OPERSTATE_CARRIER;
+ } else
+ link->operstate = LINK_OPERSTATE_UNKNOWN;
}
int link_save(Link *link) {
_cleanup_free_ char *temp_path = NULL;
_cleanup_fclose_ FILE *f = NULL;
- const char *admin_state, *oper_state = "unknown";
+ const char *admin_state, *oper_state;
int r;
assert(link);
assert(link->lease_file);
assert(link->manager);
+ link_update_operstate(link);
+
r = manager_save(link->manager);
if (r < 0)
return r;
admin_state = link_state_to_string(link->state);
assert(admin_state);
- if (link->operstate == IF_OPER_DORMANT)
- oper_state = "dormant";
- else if (link_has_carrier(link->flags, link->operstate))
- oper_state = "carrier";
+ oper_state = link_operstate_to_string(link->operstate);
+ assert(oper_state);
r = fopen_temporary(link->state_file, &f, &temp_path);
if (r < 0)
fprintf(f,
"# This is private data. Do not parse.\n"
"ADMIN_STATE=%s\n"
- "OPER_STATE=%s\n"
- "FLAGS=%u\n",
- admin_state, oper_state, link->flags);
+ "OPER_STATE=%s\n",
+ admin_state, oper_state);
+
+ if (link->network) {
+ char **address;
+
+ fputs("DNS=", f);
+
+ if (link->network->dhcp_dns &&
+ link->dhcp_lease) {
+ const struct in_addr *addresses;
+
+ r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses);
+ if (r > 0) {
+ serialize_in_addrs(f, addresses, r);
+ if (link->network->dns)
+ fputs(" ", f);
+ }
+ }
+
+ STRV_FOREACH(address, link->network->dns)
+ fprintf(f, "%s%s", *address,
+ (address + 1 ? " " : ""));
+
+ fputs("\n", f);
+
+ fprintf(f, "NTP=");
+
+ if (link->network->dhcp_ntp &&
+ link->dhcp_lease) {
+ const struct in_addr *addresses;
+
+ r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses);
+ if (r > 0) {
+ serialize_in_addrs(f, addresses, r);
+ if (link->network->ntp)
+ fputs(" ", f);
+ }
+ }
+
+ STRV_FOREACH(address, link->network->ntp)
+ fprintf(f, "%s%s", *address,
+ (address + 1 ? " " : ""));
- if (link->network)
- serialize_addresses(f, "DNS", link->network->dns);
+ fputs("\n", f);
+
+ fprintf(f, "LLMNR=%s\n", llmnr_support_to_string(link->network->llmnr));
+ }
if (link->dhcp_lease) {
+ assert(link->network);
+
r = dhcp_lease_save(link->dhcp_lease, link->lease_file);
if (r < 0)
goto finish;
fprintf(f,
- "DHCP_LEASE=%s\n"
- "DHCP_USE_DNS=%s\n",
- link->lease_file, yes_no(link->network->dhcp_dns));
+ "DHCP_LEASE=%s\n",
+ link->lease_file);
} else
unlink(link->lease_file);
};
DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState);
+
+static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = {
+ [LINK_OPERSTATE_UNKNOWN] = "unknown",
+ [LINK_OPERSTATE_DORMANT] = "dormant",
+ [LINK_OPERSTATE_CARRIER] = "carrier",
+ [LINK_OPERSTATE_DEGRADED] = "degraded",
+ [LINK_OPERSTATE_ROUTABLE] = "routable",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState);
~ianmdlvl / elogind.git / blobdiff