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Diffstat (limited to 'src/network/networkd-link.c')
-rw-r--r--src/network/networkd-link.c288
1 files changed, 258 insertions, 30 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 12ca02868d..46979ffa12 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -26,6 +26,7 @@
#include "alloc-util.h"
#include "bus-util.h"
#include "dhcp-lease-internal.h"
+#include "event-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "netlink-util.h"
@@ -2057,28 +2058,30 @@ static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m,
if (r < 0)
return r;
- r = network_get(link->manager, link->udev_device, link->ifname,
- &link->mac, &network);
- if (r == -ENOENT) {
- link_enter_unmanaged(link);
- return 1;
- } else if (r < 0)
- return r;
+ if (!link->network) {
+ r = network_get(link->manager, link->udev_device, link->ifname,
+ &link->mac, &network);
+ if (r == -ENOENT) {
+ link_enter_unmanaged(link);
+ return 1;
+ } else if (r < 0)
+ return r;
- if (link->flags & IFF_LOOPBACK) {
- if (network->link_local != ADDRESS_FAMILY_NO)
- log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link");
+ if (link->flags & IFF_LOOPBACK) {
+ if (network->link_local != ADDRESS_FAMILY_NO)
+ log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link");
- if (network->dhcp != ADDRESS_FAMILY_NO)
- log_link_debug(link, "Ignoring DHCP clients 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");
- }
+ 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;
+ r = network_apply(link->manager, network, link);
+ if (r < 0)
+ return r;
+ }
r = link_new_bound_to_list(link);
if (r < 0)
@@ -2130,6 +2133,193 @@ int link_initialized(Link *link, struct udev_device *device) {
return 0;
}
+static int link_load(Link *link) {
+ _cleanup_free_ char *network_file = NULL,
+ *addresses = NULL,
+ *routes = NULL,
+ *dhcp4_address = NULL,
+ *ipv4ll_address = NULL;
+ union in_addr_union address;
+ union in_addr_union route_dst;
+ const char *p;
+ int r;
+
+ assert(link);
+
+ r = parse_env_file(link->state_file, NEWLINE,
+ "NETWORK_FILE", &network_file,
+ "ADDRESSES", &addresses,
+ "ROUTES", &routes,
+ "DHCP4_ADDRESS", &dhcp4_address,
+ "IPV4LL_ADDRESS", &ipv4ll_address,
+ NULL);
+ if (r < 0 && r != -ENOENT)
+ return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file);
+
+ if (network_file) {
+ Network *network;
+ char *suffix;
+
+ /* drop suffix */
+ suffix = strrchr(network_file, '.');
+ if (!suffix) {
+ log_link_debug(link, "Failed to get network name from %s", network_file);
+ goto network_file_fail;
+ }
+ *suffix = '\0';
+
+ r = network_get_by_name(link->manager, basename(network_file), &network);
+ if (r < 0) {
+ log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file));
+ goto network_file_fail;
+ }
+
+ r = network_apply(link->manager, network, link);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file));
+ }
+
+network_file_fail:
+
+ if (addresses) {
+ p = addresses;
+
+ for (;;) {
+ _cleanup_free_ char *address_str = NULL;
+ char *prefixlen_str;
+ int family;
+ unsigned char prefixlen;
+
+ r = extract_first_word(&p, &address_str, NULL, 0);
+ if (r < 0) {
+ log_link_debug_errno(link, r, "Failed to extract next address string: %m");
+ continue;
+ } if (r == 0)
+ break;
+
+ prefixlen_str = strchr(address_str, '/');
+ if (!prefixlen_str) {
+ log_link_debug(link, "Failed to parse address and prefix length %s", address_str);
+ continue;
+ }
+
+ *prefixlen_str ++ = '\0';
+
+ r = sscanf(prefixlen_str, "%hhu", &prefixlen);
+ if (r != 1) {
+ log_link_error(link, "Failed to parse prefixlen %s", prefixlen_str);
+ continue;
+ }
+
+ r = in_addr_from_string_auto(address_str, &family, &address);
+ if (r < 0) {
+ log_link_debug_errno(link, r, "Failed to parse address %s: %m", address_str);
+ continue;
+ }
+
+ r = address_add(link, family, &address, prefixlen, NULL);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Failed to add address: %m");
+ }
+ }
+
+ if (routes) {
+ for (;;) {
+ Route *route;
+ _cleanup_free_ char *route_str = NULL;
+ _cleanup_event_source_unref_ sd_event_source *expire = NULL;
+ usec_t lifetime;
+ char *prefixlen_str;
+ int family;
+ unsigned char prefixlen, tos, table;
+ uint32_t priority;
+
+ r = extract_first_word(&p, &route_str, NULL, 0);
+ if (r < 0) {
+ log_link_debug_errno(link, r, "Failed to extract next route string: %m");
+ continue;
+ } if (r == 0)
+ break;
+
+ prefixlen_str = strchr(route_str, '/');
+ if (!prefixlen_str) {
+ log_link_debug(link, "Failed to parse route %s", route_str);
+ continue;
+ }
+
+ *prefixlen_str ++ = '\0';
+
+ r = sscanf(prefixlen_str, "%hhu/%hhu/%"SCNu32"/%hhu/"USEC_FMT, &prefixlen, &tos, &priority, &table, &lifetime);
+ if (r != 5) {
+ log_link_debug(link,
+ "Failed to parse destination prefix length, tos, priority, table or expiration %s",
+ prefixlen_str);
+ continue;
+ }
+
+ r = in_addr_from_string_auto(route_str, &family, &route_dst);
+ if (r < 0) {
+ log_link_debug_errno(link, r, "Failed to parse route destination %s: %m", route_str);
+ continue;
+ }
+
+ r = route_add(link, family, &route_dst, prefixlen, tos, priority, table, &route);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Failed to add route: %m");
+
+ if (lifetime != USEC_INFINITY) {
+ r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), lifetime,
+ 0, route_expire_handler, route);
+ if (r < 0)
+ log_link_warning_errno(link, r, "Could not arm route expiration handler: %m");
+ }
+
+ route->lifetime = lifetime;
+ sd_event_source_unref(route->expire);
+ route->expire = expire;
+ expire = NULL;
+ }
+ }
+
+ if (dhcp4_address) {
+ r = in_addr_from_string(AF_INET, dhcp4_address, &address);
+ if (r < 0) {
+ log_link_debug_errno(link, r, "Falied to parse DHCPv4 address %s: %m", dhcp4_address);
+ goto dhcp4_address_fail;
+ }
+
+ r = sd_dhcp_client_new(&link->dhcp_client);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Falied to create DHCPv4 client: %m");
+
+ r = sd_dhcp_client_set_request_address(link->dhcp_client, &address.in);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Falied to set inital DHCPv4 address %s: %m", dhcp4_address);
+ }
+
+dhcp4_address_fail:
+
+ if (ipv4ll_address) {
+ r = in_addr_from_string(AF_INET, ipv4ll_address, &address);
+ if (r < 0) {
+ log_link_debug_errno(link, r, "Falied to parse IPv4LL address %s: %m", ipv4ll_address);
+ goto ipv4ll_address_fail;
+ }
+
+ r = sd_ipv4ll_new(&link->ipv4ll);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Falied to create IPv4LL client: %m");
+
+ r = sd_ipv4ll_set_address(link->ipv4ll, &address.in);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Falied to set inital IPv4LL address %s: %m", ipv4ll_address);
+ }
+
+ipv4ll_address_fail:
+
+ return 0;
+}
+
int link_add(Manager *m, sd_netlink_message *message, Link **ret) {
Link *link;
_cleanup_udev_device_unref_ struct udev_device *device = NULL;
@@ -2149,6 +2339,10 @@ int link_add(Manager *m, sd_netlink_message *message, Link **ret) {
log_link_debug(link, "Link %d added", link->ifindex);
+ r = link_load(link);
+ if (r < 0)
+ return r;
+
if (detect_container() <= 0) {
/* not in a container, udev will be around */
sprintf(ifindex_str, "n%d", link->ifindex);
@@ -2372,6 +2566,7 @@ int link_save(Link *link) {
_cleanup_fclose_ FILE *f = NULL;
const char *admin_state, *oper_state;
Address *a;
+ Route *route;
Iterator i;
int r;
@@ -2450,9 +2645,9 @@ int link_save(Link *link) {
}
}
- fputs("\n", f);
+ fputc('\n', f);
- fprintf(f, "NTP=");
+ fputs("NTP=", f);
space = false;
STRV_FOREACH(address, link->network->ntp) {
if (space)
@@ -2499,9 +2694,9 @@ int link_save(Link *link) {
}
}
- fputs("\n", f);
+ fputc('\n', f);
- fprintf(f, "DOMAINS=");
+ fputs("DOMAINS=", f);
space = false;
STRV_FOREACH(domain, link->network->domains) {
if (space)
@@ -2537,7 +2732,7 @@ int link_save(Link *link) {
}
}
- fputs("\n", f);
+ fputc('\n', f);
fprintf(f, "WILDCARD_DOMAIN=%s\n",
yes_no(link->network->wildcard_domain));
@@ -2545,7 +2740,7 @@ int link_save(Link *link) {
fprintf(f, "LLMNR=%s\n",
resolve_support_to_string(link->network->llmnr));
- fprintf(f, "ADDRESSES=");
+ fputs("ADDRESSES=", f);
space = false;
SET_FOREACH(a, link->addresses, i) {
_cleanup_free_ char *address_str = NULL;
@@ -2558,7 +2753,23 @@ int link_save(Link *link) {
space = true;
}
- fputs("\n", f);
+ fputc('\n', f);
+
+ fputs("ROUTES=", f);
+ space = false;
+ SET_FOREACH(route, link->routes, i) {
+ _cleanup_free_ char *route_str = NULL;
+
+ r = in_addr_to_string(route->family, &route->dst, &route_str);
+ if (r < 0)
+ goto fail;
+
+ fprintf(f, "%s%s/%hhu/%hhu/%"PRIu32"/%hhu/"USEC_FMT, space ? " " : "", route_str,
+ route->dst_prefixlen, route->tos, route->priority, route->table, route->lifetime);
+ space = true;
+ }
+
+ fputc('\n', f);
}
if (!hashmap_isempty(link->bound_to_links)) {
@@ -2573,7 +2784,7 @@ int link_save(Link *link) {
space = true;
}
- fputs("\n", f);
+ fputc('\n', f);
}
if (!hashmap_isempty(link->bound_by_links)) {
@@ -2588,19 +2799,25 @@ int link_save(Link *link) {
space = true;
}
- fputs("\n", f);
+ fputc('\n', f);
}
if (link->dhcp_lease) {
+ struct in_addr address;
const char *tz = NULL;
+ assert(link->network);
+
r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz);
if (r >= 0)
fprintf(f, "TIMEZONE=%s\n", tz);
- }
- if (link->dhcp_lease) {
- assert(link->network);
+ r = sd_dhcp_lease_get_address(link->dhcp_lease, &address);
+ if (r >= 0) {
+ fputs("DHCP4_ADDRESS=", f);
+ serialize_in_addrs(f, &address, 1);
+ fputc('\n', f);
+ }
r = dhcp_lease_save(link->dhcp_lease, link->lease_file);
if (r < 0)
@@ -2612,6 +2829,17 @@ int link_save(Link *link) {
} else
unlink(link->lease_file);
+ if (link->ipv4ll) {
+ struct in_addr address;
+
+ r = sd_ipv4ll_get_address(link->ipv4ll, &address);
+ if (r >= 0) {
+ fputs("IPV4LL_ADDRESS=", f);
+ serialize_in_addrs(f, &address, 1);
+ fputc('\n', f);
+ }
+ }
+
if (link->lldp) {
assert(link->network);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-13 04:10:34 +0000