#include <linux/if.h>
#include <unistd.h>
-#include "networkd.h"
+#include "networkd-link.h"
#include "networkd-netdev.h"
#include "libudev-private.h"
#include "udev-util.h"
return r;
}
-static void link_enter_failed(Link *link) {
+void link_enter_failed(Link *link) {
assert(link);
if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
link_save(link);
}
+void link_client_handler(Link *link) {
+ assert(link);
+
+ if (link->ipv4ll_address && link->ipv4ll_route)
+ log_debug_link(link, "IPv4LL configured");
+ else
+ log_debug_link(link, "IPv4LL not configured");
+
+ return;
+}
+
static Address* link_find_dhcp_server_address(Link *link) {
Address *address;
link->route_messages --;
- if (IN_SET(LINK_STATE_FAILED, LINK_STATE_LINGER))
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
r = sd_rtnl_message_get_errno(m);
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 &&
- !ipv4ll_is_bound(link->ipv4ll))
- return link_enter_configured(link);
-
- log_debug_link(link, "setting routes");
-
LIST_FOREACH(routes, rt, link->network->static_routes) {
r = route_configure(rt, link, &route_handler);
if (r < 0) {
link->route_messages ++;
}
- if (ipv4ll_is_bound(link->ipv4ll)) {
- _cleanup_route_free_ Route *route = NULL;
-
- r = route_new_dynamic(&route, RTPROT_STATIC);
- 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 = IPV4LL_ROUTE_METRIC;
-
- 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) {
_cleanup_route_free_ Route *route = NULL;
_cleanup_route_free_ Route *route_gw = NULL;
if (link->route_messages == 0) {
link_enter_configured(link);
- }
+ } else
+ log_debug_link(link, "setting routes");
return 0;
}
-static int route_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+int link_route_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
_cleanup_link_unref_ Link *link = userdata;
int r;
return 1;
}
-static int link_get_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+int link_get_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
_cleanup_link_unref_ Link *link = userdata;
int r;
link->state = LINK_STATE_SETTING_ADDRESSES;
- 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");
-
LIST_FOREACH(addresses, ad, link->network->static_addresses) {
r = address_configure(ad, link, &address_handler);
if (r < 0) {
link->addr_messages ++;
}
- if (link->ipv4ll) {
- _cleanup_address_free_ Address *ll_addr = 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));
- return r;
- }
-
- if (r != -ENOENT) {
- r = address_new_dynamic(&ll_addr);
- if (r < 0) {
- log_error_link(link, "Could not allocate address: %s", strerror(-r));
- return r;
- }
-
- ll_addr->family = AF_INET;
- ll_addr->in_addr.in = addr;
- ll_addr->prefixlen = 16;
- ll_addr->broadcast.s_addr = ll_addr->in_addr.in.s_addr | htonl(0xfffffffflu >> ll_addr->prefixlen);
- ll_addr->scope = RT_SCOPE_LINK;
-
- r = address_configure(ll_addr, link, &address_handler);
- if (r < 0) {
- log_warning_link(link,
- "could not set addresses: %s", strerror(-r));
- link_enter_failed(link);
- return r;
- }
-
- link->addr_messages ++;
- }
- }
-
if (link->dhcp_lease) {
_cleanup_address_free_ Address *address = NULL;
struct in_addr addr;
link->addr_messages ++;
}
+ if (link->addr_messages == 0) {
+ link_enter_set_routes(link);
+ } else
+ log_debug_link(link, "setting addresses");
+
return 0;
}
-static int address_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+int link_address_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
_cleanup_link_unref_ Link *link = userdata;
int r;
route->dst_addr.in = routes[i].dst_addr;
route->dst_prefixlen = routes[i].dst_prefixlen;
- route_drop(route, link, &route_drop_handler);
+ route_drop(route, link, &link_route_drop_handler);
}
}
}
route_gw->dst_prefixlen = 32;
route_gw->scope = RT_SCOPE_LINK;
- route_drop(route_gw, link, &route_drop_handler);
+ route_drop(route_gw, link, &link_route_drop_handler);
}
r = route_new_dynamic(&route, RTPROT_UNSPEC);
route->family = AF_INET;
route->in_addr.in = gateway;
- route_drop(route, link, &route_drop_handler);
+ route_drop(route, link, &link_route_drop_handler);
}
}
address->in_addr.in = addr;
address->prefixlen = prefixlen;
- address_drop(address, link, &address_drop_handler);
+ address_drop(address, link, &link_address_drop_handler);
}
if (link->network->dhcp_mtu) {
return;
}
-static int ipv4ll_address_lost(Link *link) {
- 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;
- _cleanup_route_free_ Route *route = NULL;
-
- log_debug_link(link, "IPv4 link-local release %u.%u.%u.%u",
- 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_drop(address, link, &address_drop_handler);
-
- r = route_new_dynamic(&route, RTPROT_UNSPEC);
- 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;
-
- route_drop(route, link, &route_drop_handler);
- }
-
- return 0;
-}
-
-static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) {
- struct in_addr address;
- int r;
-
- assert(ll);
- assert(link);
-
- r = sd_ipv4ll_get_address(ll, &address);
- if (r < 0)
- return r;
-
- log_struct_link(LOG_INFO, link,
- "MESSAGE=%-*s: IPv4 link-local address %u.%u.%u.%u",
- IFNAMSIZ,
- link->ifname,
- ADDRESS_FMT_VAL(address),
- NULL);
-
- link_enter_set_addresses(link);
-
- return 0;
-}
-
-static void ipv4ll_handler(sd_ipv4ll *ll, 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 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;
int r;
assert(link);
+ assert(link->network);
assert(link->state == LINK_STATE_INITIALIZING);
if (link->network->ipv4ll) {
- uint8_t seed[8];
-
- r = sd_ipv4ll_new(&link->ipv4ll);
- if (r < 0)
- return r;
-
- if (link->udev_device) {
- r = net_get_unique_predictable_data(link->udev_device, seed);
- if (r >= 0) {
- r = sd_ipv4ll_set_address_seed(link->ipv4ll, seed);
- if (r < 0)
- return r;
- }
- }
-
- r = sd_ipv4ll_attach_event(link->ipv4ll, NULL, 0);
- if (r < 0)
- return r;
-
- r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac);
- if (r < 0)
- return r;
-
- r = sd_ipv4ll_set_index(link->ipv4ll, link->ifindex);
- if (r < 0)
- return r;
-
- r = sd_ipv4ll_set_callback(link->ipv4ll, ipv4ll_handler, link);
+ r = ipv4ll_configure(link);
if (r < 0)
return r;
}
r = fopen_temporary(link->state_file, &f, &temp_path);
if (r < 0)
- goto finish;
+ return r;
fchmod(fileno(f), 0644);
r = dhcp_lease_save(link->dhcp_lease, link->lease_file);
if (r < 0)
- goto finish;
+ goto fail;
fprintf(f,
"DHCP_LEASE=%s\n",
} else
unlink(link->lease_file);
- fflush(f);
+ r = fflush_and_check(f);
+ if (r < 0)
+ goto fail;
- if (ferror(f) || rename(temp_path, link->state_file) < 0) {
+ if (rename(temp_path, link->state_file) < 0) {
r = -errno;
- unlink(link->state_file);
- unlink(temp_path);
+ goto fail;
}
-finish:
- if (r < 0)
- log_error_link(link, "Failed to save link data to %s: %s", link->state_file, strerror(-r));
+ return 0;
+fail:
+ log_error_link(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