-/* SPDX-License-Identifier: LGPL-2.1+ */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
/***
Copyright © 2017 Intel Corporation. All rights reserved.
***/
#include <arpa/inet.h>
#include "dns-domain.h"
-#include "networkd-address.h"
+#include "networkd-link.h"
#include "networkd-manager.h"
+#include "networkd-network.h"
#include "networkd-radv.h"
#include "parse-util.h"
-#include "sd-radv.h"
#include "string-util.h"
#include "string-table.h"
#include "strv.h"
return 0;
}
-static int prefix_new_static(Network *network, const char *filename,
- unsigned section_line, Prefix **ret) {
+static int prefix_new_static(Network *network, const char *filename, unsigned section_line, Prefix **ret) {
_cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
_cleanup_(prefix_freep) Prefix *prefix = NULL;
int r;
return 0;
}
-static int route_prefix_new_static(Network *network, const char *filename,
- unsigned section_line, RoutePrefix **ret) {
+static int route_prefix_new_static(Network *network, const char *filename, unsigned section_line, RoutePrefix **ret) {
_cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
_cleanup_(route_prefix_freep) RoutePrefix *prefix = NULL;
int r;
return 0;
}
-void network_verify_prefixes(Network *network) {
+void network_drop_invalid_prefixes(Network *network) {
Prefix *prefix;
assert(network);
prefix_free(prefix);
}
-void network_verify_route_prefixes(Network *network) {
+void network_drop_invalid_route_prefixes(Network *network) {
RoutePrefix *prefix;
assert(network);
route_prefix_free(prefix);
}
-int config_parse_prefix(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
+void network_adjust_radv(Network *network) {
+ assert(network);
+
+ /* After this function is called, network->router_prefix_delegation can be treated as a boolean. */
+
+ if (network->dhcp6_pd < 0)
+ /* For backward compatibility. */
+ network->dhcp6_pd = FLAGS_SET(network->router_prefix_delegation, RADV_PREFIX_DELEGATION_DHCP6);
+
+ if (!FLAGS_SET(network->link_local, ADDRESS_FAMILY_IPV6)) {
+ if (network->router_prefix_delegation != RADV_PREFIX_DELEGATION_NONE)
+ log_warning("%s: IPv6PrefixDelegation= is enabled but IPv6 link local addressing is disabled. "
+ "Disabling IPv6PrefixDelegation=.", network->filename);
+
+ network->router_prefix_delegation = RADV_PREFIX_DELEGATION_NONE;
+ }
+
+ if (network->router_prefix_delegation == RADV_PREFIX_DELEGATION_NONE) {
+ network->n_router_dns = 0;
+ network->router_dns = mfree(network->router_dns);
+ network->router_search_domains = ordered_set_free(network->router_search_domains);
+ }
+
+ if (!FLAGS_SET(network->router_prefix_delegation, RADV_PREFIX_DELEGATION_STATIC)) {
+ network->prefixes_by_section = hashmap_free_with_destructor(network->prefixes_by_section, prefix_free);
+ network->route_prefixes_by_section = hashmap_free_with_destructor(network->route_prefixes_by_section, route_prefix_free);
+ }
+}
+
+int config_parse_prefix(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
Network *network = userdata;
_cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL;
return 0;
}
-int config_parse_prefix_flags(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
+int config_parse_prefix_flags(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
Network *network = userdata;
_cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL;
int r;
return 0;
}
-int config_parse_prefix_lifetime(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
+int config_parse_prefix_lifetime(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
Network *network = userdata;
_cleanup_(prefix_free_or_set_invalidp) Prefix *p = NULL;
usec_t usec;
return 0;
}
-int config_parse_route_prefix(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
+int config_parse_route_prefix(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
Network *network = userdata;
_cleanup_(route_prefix_free_or_set_invalidp) RoutePrefix *p = NULL;
return 0;
}
-int config_parse_route_prefix_lifetime(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
+int config_parse_route_prefix_lifetime(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
Network *network = userdata;
_cleanup_(route_prefix_free_or_set_invalidp) RoutePrefix *p = NULL;
usec_t usec;
return 0;
}
-static int radv_get_ip6dns(Network *network, struct in6_addr **dns,
- size_t *n_dns) {
+static int network_get_ipv6_dns(Network *network, struct in6_addr **ret_addresses, size_t *ret_size) {
_cleanup_free_ struct in6_addr *addresses = NULL;
- size_t i, n_addresses = 0, n_allocated = 0;
+ size_t n_addresses = 0, n_allocated = 0;
assert(network);
- assert(dns);
- assert(n_dns);
+ assert(ret_addresses);
+ assert(ret_size);
- for (i = 0; i < network->n_dns; i++) {
+ for (size_t i = 0; i < network->n_dns; i++) {
union in_addr_union *addr;
if (network->dns[i]->family != AF_INET6)
addresses[n_addresses++] = addr->in6;
}
- if (addresses) {
- *dns = TAKE_PTR(addresses);
-
- *n_dns = n_addresses;
- }
+ *ret_addresses = TAKE_PTR(addresses);
+ *ret_size = n_addresses;
return n_addresses;
}
lifetime_usec = SD_RADV_DEFAULT_DNS_LIFETIME_USEC;
- r = radv_get_ip6dns(link->network, &dns, &n_dns);
+ r = network_get_ipv6_dns(link->network, &dns, &n_dns);
if (r > 0)
goto set_dns;
return 0;
}
- r = radv_get_ip6dns(uplink->network, &dns, &n_dns);
+ r = network_get_ipv6_dns(uplink->network, &dns, &n_dns);
if (r > 0)
goto set_dns;
}
return 0;
}
+static bool link_radv_enabled(Link *link) {
+ assert(link);
+
+ if (!link_ipv6ll_enabled(link))
+ return false;
+
+ return link->network->router_prefix_delegation;
+}
+
int radv_configure(Link *link) {
+ RoutePrefix *q;
+ Prefix *p;
int r;
assert(link);
assert(link->network);
+ if (!link_radv_enabled(link))
+ return 0;
+
r = sd_radv_new(&link->radv);
if (r < 0)
return r;
- r = sd_radv_attach_event(link->radv, NULL, 0);
+ r = sd_radv_attach_event(link->radv, link->manager->event, 0);
if (r < 0)
return r;
- r = sd_radv_set_mac(link->radv, &link->mac);
+ r = sd_radv_set_mac(link->radv, &link->hw_addr.addr.ether);
if (r < 0)
return r;
return r;
}
- if (link->network->router_prefix_delegation & RADV_PREFIX_DELEGATION_STATIC) {
- RoutePrefix *q;
- Prefix *p;
-
- HASHMAP_FOREACH(p, link->network->prefixes_by_section) {
- r = sd_radv_add_prefix(link->radv, p->radv_prefix, false);
- if (r == -EEXIST)
- continue;
- if (r == -ENOEXEC) {
- log_link_warning_errno(link, r, "[IPv6Prefix] section configured without Prefix= setting, ignoring section.");
- continue;
- }
- if (r < 0)
- return r;
+ HASHMAP_FOREACH(p, link->network->prefixes_by_section) {
+ r = sd_radv_add_prefix(link->radv, p->radv_prefix, false);
+ if (r == -EEXIST)
+ continue;
+ if (r == -ENOEXEC) {
+ log_link_warning_errno(link, r, "[IPv6Prefix] section configured without Prefix= setting, ignoring section.");
+ continue;
}
+ if (r < 0)
+ return r;
+ }
- HASHMAP_FOREACH(q, link->network->route_prefixes_by_section) {
- r = sd_radv_add_route_prefix(link->radv, q->radv_route_prefix, false);
- if (r == -EEXIST)
- continue;
- if (r < 0)
- return r;
- }
+ HASHMAP_FOREACH(q, link->network->route_prefixes_by_section) {
+ r = sd_radv_add_route_prefix(link->radv, q->radv_route_prefix, false);
+ if (r == -EEXIST)
+ continue;
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+int radv_update_mac(Link *link) {
+ bool restart;
+ int r;
+
+ assert(link);
+
+ if (!link->radv)
+ return 0;
+
+ restart = sd_radv_is_running(link->radv);
+
+ r = sd_radv_stop(link->radv);
+ if (r < 0)
+ return r;
+
+ r = sd_radv_set_mac(link->radv, &link->hw_addr.addr.ether);
+ if (r < 0)
+ return r;
+
+ if (restart) {
+ r = sd_radv_start(link->radv);
+ if (r < 0)
+ return r;
}
return 0;
}
-int radv_add_prefix(Link *link, const struct in6_addr *prefix, uint8_t prefix_len,
- uint32_t lifetime_preferred, uint32_t lifetime_valid) {
+int radv_add_prefix(
+ Link *link,
+ const struct in6_addr *prefix,
+ uint8_t prefix_len,
+ uint32_t lifetime_preferred,
+ uint32_t lifetime_valid) {
+
_cleanup_(sd_radv_prefix_unrefp) sd_radv_prefix *p = NULL;
int r;
assert(lvalue);
assert(rvalue);
+ if (isempty(rvalue)) {
+ n->n_router_dns = 0;
+ n->router_dns = mfree(n->router_dns);
+ return 0;
+ }
+
for (const char *p = rvalue;;) {
_cleanup_free_ char *w = NULL;
union in_addr_union a;
assert(lvalue);
assert(rvalue);
+ if (isempty(rvalue)) {
+ n->router_search_domains = ordered_set_free(n->router_search_domains);
+ return 0;
+ }
+
for (const char *p = rvalue;;) {
_cleanup_free_ char *w = NULL, *idna = NULL;
/* transfer ownership to simplify subsequent operations */
idna = TAKE_PTR(w);
- r = ordered_set_ensure_allocated(&n->router_search_domains, &string_hash_ops);
+ r = ordered_set_ensure_allocated(&n->router_search_domains, &string_hash_ops_free);
if (r < 0)
return log_oom();
}
static const char * const radv_prefix_delegation_table[_RADV_PREFIX_DELEGATION_MAX] = {
- [RADV_PREFIX_DELEGATION_NONE] = "no",
+ [RADV_PREFIX_DELEGATION_NONE] = "no",
[RADV_PREFIX_DELEGATION_STATIC] = "static",
- [RADV_PREFIX_DELEGATION_DHCP6] = "dhcpv6",
- [RADV_PREFIX_DELEGATION_BOTH] = "yes",
+ [RADV_PREFIX_DELEGATION_DHCP6] = "dhcpv6",
+ [RADV_PREFIX_DELEGATION_BOTH] = "yes",
};
DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(
RADVPrefixDelegation,
RADV_PREFIX_DELEGATION_BOTH);
-DEFINE_CONFIG_PARSE_ENUM(config_parse_router_prefix_delegation,
- radv_prefix_delegation,
- RADVPrefixDelegation,
- "Invalid router prefix delegation");
-
-int config_parse_router_preference(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
+int config_parse_router_prefix_delegation(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ RADVPrefixDelegation val, *ra = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (streq(lvalue, "IPv6SendRA")) {
+ r = parse_boolean(rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Invalid %s= setting, ignoring assignment: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ /* When IPv6SendRA= is enabled, only static prefixes are sent by default, and users
+ * need to explicitly enable DHCPv6PrefixDelegation=. */
+ *ra = r ? RADV_PREFIX_DELEGATION_STATIC : RADV_PREFIX_DELEGATION_NONE;
+ return 0;
+ }
+
+ /* For backward compatibility */
+ val = radv_prefix_delegation_from_string(rvalue);
+ if (val < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Invalid %s= setting, ignoring assignment: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ *ra = val;
+ return 0;
+}
+
+int config_parse_router_preference(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
Network *network = userdata;
assert(filename);
projects / thirdparty / systemd.git / blobdiff