#include <netinet/in.h>
#include <linux/if.h>
#include <linux/if_arp.h>
-#include "sd-radv.h"
#include "sd-dhcp6-client.h"
+#include "escape.h"
#include "hashmap.h"
#include "hostname-util.h"
#include "missing_network.h"
#include "networkd-dhcp6.h"
#include "networkd-link.h"
#include "networkd-manager.h"
+#include "networkd-radv.h"
#include "siphash24.h"
+#include "string-table.h"
#include "string-util.h"
#include "radv-internal.h"
+#include "web-util.h"
-static int dhcp6_lease_address_acquired(sd_dhcp6_client *client, Link *link);
static Link *dhcp6_prefix_get(Manager *m, struct in6_addr *addr);
static int dhcp6_prefix_add(Manager *m, struct in6_addr *addr, Link *link);
static int dhcp6_prefix_remove_all(Manager *m, Link *link);
+static int dhcp6_assign_delegated_prefix(Link *link, const struct in6_addr *prefix,
+ uint8_t prefix_len,
+ uint32_t lifetime_preferred,
+ uint32_t lifetime_valid);
-static bool dhcp6_get_prefix_delegation(Link *link) {
+bool dhcp6_get_prefix_delegation(Link *link) {
if (!link->network)
return false;
RADV_PREFIX_DELEGATION_BOTH);
}
+static bool dhcp6_has_preferred_subnet_id(Link *link) {
+ if (!link->network)
+ return false;
+
+ return link->network->router_prefix_subnet_id >= 0;
+}
+
+static int dhcp6_get_preferred_delegated_prefix(
+ Manager* manager,
+ Link *link,
+ const struct in6_addr *pd_prefix,
+ uint8_t pd_prefix_len,
+ struct in6_addr *ret_addr) {
+
+ int64_t subnet_id = link->network->router_prefix_subnet_id;
+ uint8_t prefix_bits = 64 - pd_prefix_len;
+ uint64_t n_prefixes = UINT64_C(1) << prefix_bits;
+ _cleanup_free_ char *assigned_buf = NULL;
+ union in_addr_union pd_prefix_union = {
+ .in6 = *pd_prefix,
+ };
+ /* We start off with the original PD prefix we have been assigned and
+ * iterate from there */
+ union in_addr_union prefix = {
+ .in6 = *pd_prefix,
+ };
+ int r;
+
+ assert(pd_prefix_len <= 64);
+ assert(manager);
+ assert(link);
+ assert(link->network);
+
+ if (subnet_id >= 0) {
+ /* If the link has a preference for a particular subnet id try to allocate that */
+ if ((uint64_t) subnet_id >= n_prefixes)
+ return log_link_debug_errno(link,
+ SYNTHETIC_ERRNO(ERANGE),
+ "subnet id %" PRIi64 " is out of range. Only have %" PRIu64 " subnets.",
+ subnet_id,
+ n_prefixes);
+
+ r = in_addr_prefix_nth(AF_INET6, &prefix, 64, subnet_id);
+ if (r < 0)
+ return log_link_debug_errno(link,
+ r,
+ "subnet id %" PRIi64 " is out of range. Only have %" PRIu64 " subnets.",
+ subnet_id,
+ n_prefixes);
+
+ /* Verify that the prefix we did calculate fits in the pd prefix.
+ * This should not fail as we checked the prefix size beforehand */
+ assert_se(in_addr_prefix_covers(AF_INET6, &pd_prefix_union, pd_prefix_len, &prefix) > 0);
+
+ Link* assigned_link = dhcp6_prefix_get(manager, &prefix.in6);
+
+ (void) in_addr_to_string(AF_INET6, &prefix, &assigned_buf);
+
+ if (assigned_link && assigned_link != link)
+ return log_link_error_errno(link, SYNTHETIC_ERRNO(EAGAIN),
+ "The requested prefix %s is already assigned to another link: %s",
+ strnull(assigned_buf),
+ strnull(assigned_link->ifname));
+
+ *ret_addr = prefix.in6;
+
+ log_link_debug(link, "The requested prefix %s is available. Using it.",
+ strnull(assigned_buf));
+ return 0;
+ }
+
+ for (uint64_t n = 0; n < n_prefixes; n++) {
+ /* if we do not have an allocation preference just iterate
+ * through the address space and return the first free prefix. */
+ Link* assigned_link = dhcp6_prefix_get(manager, &prefix.in6);
+
+ if (!assigned_link || assigned_link == link) {
+ *ret_addr = prefix.in6;
+ return 0;
+ }
+
+ r = in_addr_prefix_next(AF_INET6, &prefix, 64);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Can't allocate another prefix. Out of address space?: %m");
+ }
+
+ return log_link_warning_errno(link, SYNTHETIC_ERRNO(ERANGE), "Couldn't find a suitable prefix. Ran out of address space.");
+}
+
static bool dhcp6_enable_prefix_delegation(Link *dhcp6_link) {
Manager *manager;
Link *l;
return false;
}
-static int dhcp6_lease_information_acquired(sd_dhcp6_client *client,
- Link *link) {
+static int dhcp6_lease_information_acquired(sd_dhcp6_client *client, Link *link) {
return 0;
}
uint8_t prefix_len,
uint32_t lifetime_preferred,
uint32_t lifetime_valid) {
- sd_radv *radv = link->radv;
int r;
- _cleanup_(sd_radv_prefix_unrefp) sd_radv_prefix *p = NULL;
-
- r = sd_radv_prefix_new(&p);
- if (r < 0)
- return r;
-
- r = sd_radv_prefix_set_prefix(p, prefix, prefix_len);
- if (r < 0)
- return r;
- r = sd_radv_prefix_set_preferred_lifetime(p, lifetime_preferred);
+ r = radv_add_prefix(link, prefix, prefix_len, lifetime_preferred, lifetime_valid);
if (r < 0)
return r;
- r = sd_radv_prefix_set_valid_lifetime(p, lifetime_valid);
- if (r < 0)
- return r;
-
- r = sd_radv_stop(radv);
+ r = dhcp6_prefix_add(link->manager, prefix, link);
if (r < 0)
return r;
- r = sd_radv_add_prefix(radv, p, true);
- if (r < 0 && r != -EEXIST)
- return r;
-
- r = dhcp6_prefix_add(link->manager, prefix, link);
+ r = dhcp6_assign_delegated_prefix(link, prefix, prefix_len, lifetime_preferred, lifetime_valid);
if (r < 0)
return r;
- return sd_radv_start(radv);
+ return 0;
}
static int dhcp6_route_remove_handler(sd_netlink *nl, sd_netlink_message *m, Link *link) {
}
int dhcp6_lease_pd_prefix_lost(sd_dhcp6_client *client, Link* link) {
- int r;
- sd_dhcp6_lease *lease;
+ uint32_t lifetime_preferred, lifetime_valid;
union in_addr_union pd_prefix;
uint8_t pd_prefix_len;
- uint32_t lifetime_preferred, lifetime_valid;
+ sd_dhcp6_lease *lease;
+ int r;
r = sd_dhcp6_client_get_lease(client, &lease);
if (r < 0)
return 0;
}
-static int dhcp6_pd_prefix_distribute(Link *dhcp6_link, Iterator *i,
+static int dhcp6_pd_prefix_distribute(Link *dhcp6_link,
struct in6_addr *pd_prefix,
uint8_t pd_prefix_len,
uint32_t lifetime_preferred,
- uint32_t lifetime_valid) {
- Link *link;
+ uint32_t lifetime_valid,
+ bool assign_preferred_subnet_id) {
+
+ _cleanup_free_ char *assigned_buf = NULL, *buf = NULL;
Manager *manager = dhcp6_link->manager;
- union in_addr_union prefix;
- uint64_t n_prefixes, n_used = 0;
- _cleanup_free_ char *buf = NULL;
- _cleanup_free_ char *assigned_buf = NULL;
+ union in_addr_union prefix = {
+ .in6 = *pd_prefix,
+ };
+ bool pool_depleted = false;
+ uint64_t n_prefixes;
+ Iterator i;
+ Link *link;
int r;
assert(manager);
assert(pd_prefix_len <= 64);
- prefix.in6 = *pd_prefix;
-
r = in_addr_mask(AF_INET6, &prefix, pd_prefix_len);
if (r < 0)
return r;
log_link_debug(dhcp6_link, "Assigning up to %" PRIu64 " prefixes from %s/%u",
n_prefixes, strnull(buf), pd_prefix_len);
- while (hashmap_iterate(manager->links, i, (void **)&link, NULL)) {
- Link *assigned_link;
-
- if (n_used == n_prefixes) {
- log_link_debug(dhcp6_link, "Assigned %" PRIu64 "/%" PRIu64 " prefixes from %s/%u",
- n_used, n_prefixes, strnull(buf), pd_prefix_len);
-
- return -EAGAIN;
- }
+ HASHMAP_FOREACH(link, manager->links, i) {
+ union in_addr_union assigned_prefix;
if (link == dhcp6_link)
continue;
if (!dhcp6_get_prefix_delegation(link))
continue;
- assigned_link = dhcp6_prefix_get(manager, &prefix.in6);
- if (assigned_link && assigned_link != link)
+ if (assign_preferred_subnet_id != dhcp6_has_preferred_subnet_id(link))
continue;
- (void) in_addr_to_string(AF_INET6, &prefix, &assigned_buf);
- r = dhcp6_pd_prefix_assign(link, &prefix.in6, 64,
+ r = dhcp6_get_preferred_delegated_prefix(manager, link, &prefix.in6, pd_prefix_len,
+ &assigned_prefix.in6);
+
+ if (assign_preferred_subnet_id && r == -EAGAIN) {
+ /* A link has a preferred subnet_id but that one is
+ * already taken by another link. Now all the remaining
+ * links will also not obtain a prefix. */
+ pool_depleted = true;
+ continue;
+ } else if (r < 0)
+ return r;
+
+ (void) in_addr_to_string(AF_INET6, &assigned_prefix, &assigned_buf);
+ r = dhcp6_pd_prefix_assign(link, &assigned_prefix.in6, 64,
lifetime_preferred, lifetime_valid);
if (r < 0) {
- log_link_error_errno(link, r, "Unable to %s prefix %s/64 from %s/%u for link: %m",
- assigned_link ? "update": "assign",
+ log_link_error_errno(link, r, "Unable to assign/update prefix %s/64 from %s/%u for link: %m",
strnull(assigned_buf),
strnull(buf), pd_prefix_len);
-
- if (!assigned_link)
- continue;
-
} else
- log_link_debug(link, "Assigned prefix %" PRIu64 "/%" PRIu64 " %s/64 from %s/%u to link",
- n_used + 1, n_prefixes,
+ log_link_debug(link, "Assigned prefix %s/64 from %s/%u to link",
strnull(assigned_buf),
strnull(buf), pd_prefix_len);
-
- n_used++;
-
- r = in_addr_prefix_next(AF_INET6, &prefix, 64);
- if (r < 0 && n_used < n_prefixes)
- return r;
}
+ /* If one of the link requests couldn't be fulfilled, signal that we
+ should try again with another prefix. */
+ if (pool_depleted)
+ return -EAGAIN;
+
return 0;
}
int r;
assert(link);
+ assert(link->dhcp6_route_messages > 0);
+
+ link->dhcp6_route_messages--;
if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
r = sd_netlink_message_get_errno(m);
- if (r < 0 && r != -EEXIST)
- log_link_message_warning_errno(link, m, r, "Received error when adding unreachable route for DHCPv6 delegated subnet");
+ if (r < 0 && r != -EEXIST) {
+ log_link_message_warning_errno(link, m, r, "Failed to add unreachable route for DHCPv6 delegated subnet");
+ link_enter_failed(link);
+ return 1;
+ }
+
+ if (link->dhcp6_route_messages == 0) {
+ log_link_debug(link, "Unreachable routes for DHCPv6 delegated subnets set");
+ link->dhcp6_route_configured = true;
+ link_check_ready(link);
+ }
return 1;
}
static int dhcp6_lease_pd_prefix_acquired(sd_dhcp6_client *client, Link *link) {
- int r;
- sd_dhcp6_lease *lease;
+ uint32_t lifetime_preferred, lifetime_valid;
union in_addr_union pd_prefix;
+ sd_dhcp6_lease *lease;
uint8_t pd_prefix_len;
- uint32_t lifetime_preferred, lifetime_valid;
- Iterator i = ITERATOR_FIRST;
+ int r;
+
+ link->dhcp6_route_configured = false;
r = sd_dhcp6_client_get_lease(client, &lease);
if (r < 0)
pd_prefix_len);
continue;
}
+ if (r > 0)
+ link->dhcp6_route_messages++;
log_link_debug(link, "Configuring unreachable route for %s/%u",
strnull(buf), pd_prefix_len);
} else
log_link_debug(link, "Not adding a blocking route since distributed prefix is /64");
- r = dhcp6_pd_prefix_distribute(link, &i, &pd_prefix.in6,
+ /* We are doing prefix allocation in two steps:
+ * 1. all those links that have a preferred subnet id will be assigned their subnet
+ * 2. all those links that remain will receive prefixes in sequential
+ * order. Prefixes that were previously already allocated to another
+ * link will be skipped.
+
+ * If a subnet id request couldn't be fulfilled the failure will be logged (as error)
+ * and no further attempts at obtaining a prefix will be made.
+
+ * The assignment has to be split in two phases since subnet id
+ * preferences should be honored. Meaning that any subnet id should be
+ * handed out to the requesting link and not to some link that didn't
+ * specify any preference. */
+
+ r = dhcp6_pd_prefix_distribute(link, &pd_prefix.in6,
+ pd_prefix_len,
+ lifetime_preferred,
+ lifetime_valid,
+ true);
+ if (r < 0 && r != -EAGAIN)
+ return r;
+
+ /* if r == -EAGAIN then the allocation failed because we ran
+ * out of addresses for the preferred subnet id's. This doesn't
+ * mean we can't fulfill other prefix requests.
+ *
+ * Since we do not have dedicated lists of links that request
+ * specific subnet id's and those that accept any prefix we
+ * *must* reset the iterator to the start as otherwise some
+ * links might not get their requested prefix. */
+
+ r = dhcp6_pd_prefix_distribute(link, &pd_prefix.in6,
pd_prefix_len,
lifetime_preferred,
- lifetime_valid);
+ lifetime_valid,
+ false);
if (r < 0 && r != -EAGAIN)
return r;
- if (r >= 0)
- i = ITERATOR_FIRST;
+ /* If the prefix distribution did return -EAGAIN we will try to
+ * fulfill those with the next available pd delegated prefix. */
+ }
+
+ if (link->dhcp6_route_messages == 0) {
+ link->dhcp6_route_configured = true;
+ link_check_ready(link);
+ } else {
+ log_link_debug(link, "Setting unreachable routes for DHCPv6 delegated subnets");
+ link_set_state(link, LINK_STATE_CONFIGURING);
}
return 0;
r = sd_dhcp6_client_get_prefix_delegation(l->dhcp6_client, &enabled);
if (r < 0) {
- log_link_warning_errno(l, r, "Cannot get prefix delegation when adding new link");
+ log_link_warning_errno(l, r, "Cannot get prefix delegation when adding new link: %m");
continue;
}
if (enabled == 0) {
r = sd_dhcp6_client_set_prefix_delegation(l->dhcp6_client, 1);
if (r < 0) {
- log_link_warning_errno(l, r, "Cannot enable prefix delegation when adding new link");
+ log_link_warning_errno(l, r, "Cannot enable prefix delegation when adding new link: 5m");
continue;
}
}
r = sd_dhcp6_client_stop(l->dhcp6_client);
if (r < 0) {
- log_link_warning_errno(l, r, "Cannot stop DHCPv6 prefix delegation client after adding new link");
+ log_link_warning_errno(l, r, "Cannot stop DHCPv6 prefix delegation client after adding new link: %m");
continue;
}
r = sd_dhcp6_client_start(l->dhcp6_client);
if (r < 0) {
- log_link_warning_errno(l, r, "Cannot restart DHCPv6 prefix delegation client after adding new link");
+ log_link_warning_errno(l, r, "Cannot restart DHCPv6 prefix delegation client after adding new link: %m");
continue;
}
int r;
assert(link);
+ assert(link->dhcp6_address_messages > 0);
+
+ link->dhcp6_address_messages--;
if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
} else if (r >= 0)
(void) manager_rtnl_process_address(rtnl, m, link->manager);
- r = link_request_set_routes(link);
- if (r < 0) {
- link_enter_failed(link);
- return 1;
+ if (link->dhcp6_address_messages == 0) {
+ log_link_debug(link, "DHCPv6 addresses set");
+ link->dhcp6_address_configured = true;
+ r = link_request_set_routes(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return 1;
+ }
}
return 1;
r = address_configure(addr, link, dhcp6_address_handler, true);
if (r < 0)
return log_link_warning_errno(link, r, "Could not assign DHCPv6 address: %m");
+ if (r > 0)
+ link->dhcp6_address_messages++;
return 0;
}
struct in6_addr ip6_addr;
uint32_t lifetime_preferred, lifetime_valid;
+ link->dhcp6_address_configured = false;
+
r = sd_dhcp6_client_get_lease(client, &lease);
if (r < 0)
return r;
sd_dhcp6_lease_reset_address_iter(lease);
-
while (sd_dhcp6_lease_get_address(lease, &ip6_addr,
&lifetime_preferred,
&lifetime_valid) >= 0) {
return r;
}
+ if (link->dhcp6_address_messages == 0) {
+ link->dhcp6_address_configured = true;
+ return link_request_set_routes(link);
+ } else {
+ log_link_debug(link, "Setting DHCPv6 addresses");
+ /* address_handler calls link_request_set_routes() and link_request_set_nexthop().
+ * Before they are called, the related flags must be cleared. Otherwise, the link
+ * becomes configured state before routes are configured. */
+ link->static_routes_configured = false;
+ link->static_nexthops_configured = false;
+ link_set_state(link, LINK_STATE_CONFIGURING);
+ }
+
return 0;
}
(void) dhcp6_prefix_remove_all(link->manager, link);
link_dirty(link);
- link->dhcp6_configured = false;
break;
case SD_DHCP6_CLIENT_EVENT_IP_ACQUIRE:
r = dhcp6_lease_pd_prefix_acquired(client, link);
if (r < 0)
- log_link_debug(link, "DHCPv6 did not receive prefixes to delegate");
+ log_link_debug_errno(link, r, "DHCPv6 did not receive prefixes to delegate: %m");
_fallthrough_;
case SD_DHCP6_CLIENT_EVENT_INFORMATION_REQUEST:
}
link_dirty(link);
- link->dhcp6_configured = true;
break;
default:
r = sd_dhcp6_client_set_address_request(link->dhcp6_client,
false);
- if (r < 0 )
+ if (r < 0)
return r;
ir = false;
int dhcp6_configure(Link *link) {
_cleanup_(sd_dhcp6_client_unrefp) sd_dhcp6_client *client = NULL;
+ sd_dhcp6_option *vendor_option;
sd_dhcp6_option *send_option;
void *request_options;
const DUID *duid;
log_link_debug(link, "DHCP6 CLIENT: Failed to set request flag for '%u' already exists, ignoring.", option);
continue;
}
-
if (r < 0)
return log_link_error_errno(link, r, "DHCP6 CLIENT: Failed to set request flag for '%u': %m", option);
}
return log_link_error_errno(link, r, "DHCP6 CLIENT: Failed to set vendor class: %m");
}
+ ORDERED_HASHMAP_FOREACH(vendor_option, link->network->dhcp6_client_send_vendor_options, i) {
+ r = sd_dhcp6_client_add_vendor_option(client, vendor_option);
+ if (r == -EEXIST)
+ continue;
+ if (r < 0)
+ return log_link_error_errno(link, r, "DHCP6 CLIENT: Failed to set vendor option: %m");
+ }
+
r = sd_dhcp6_client_set_callback(client, dhcp6_handler, link);
if (r < 0)
return log_link_error_errno(link, r, "DHCP6 CLIENT: Failed to set callback: %m");
return hashmap_get(m->dhcp6_prefixes, addr);
}
-static int dhcp6_route_add_handler(sd_netlink *nl, sd_netlink_message *m, Link *link) {
+static int dhcp6_pd_route_handler(sd_netlink *nl, sd_netlink_message *m, Link *link) {
int r;
assert(link);
+ assert(link->dhcp6_pd_route_messages > 0);
+
+ link->dhcp6_pd_route_messages--;
if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
return 1;
r = sd_netlink_message_get_errno(m);
if (r < 0 && r != -EEXIST) {
- log_link_message_warning_errno(link, m, r, "Received error adding DHCPv6 Prefix Delegation route");
+ log_link_message_warning_errno(link, m, r, "Failed to add DHCPv6 Prefix Delegation route");
link_enter_failed(link);
return 1;
}
+ if (link->dhcp6_pd_route_messages == 0) {
+ log_link_debug(link, "DHCPv6 prefix delegation routes set");
+ link->dhcp6_pd_route_configured = true;
+ link_check_ready(link);
+ }
+
return 1;
}
route->dst.in6 = *addr;
route->dst_prefixlen = 64;
- r = route_configure(route, link, dhcp6_route_add_handler);
+ link->dhcp6_pd_route_configured = false;
+ link_set_state(link, LINK_STATE_CONFIGURING);
+
+ r = route_configure(route, link, dhcp6_pd_route_handler);
if (r < 0)
return r;
+ if (r > 0)
+ link->dhcp6_pd_route_messages++;
(void) in_addr_to_string(AF_INET6, (union in_addr_union *) addr, &buf);
log_link_debug(link, "Adding prefix route %s/64", strnull(buf));
return 0;
}
+
+static int dhcp6_pd_address_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
+ int r;
+
+ assert(link);
+ assert(link->dhcp6_pd_address_messages > 0);
+
+ link->dhcp6_pd_address_messages--;
+
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return 1;
+
+ r = sd_netlink_message_get_errno(m);
+ if (r < 0 && r != -EEXIST) {
+ log_link_message_warning_errno(link, m, r, "Could not set DHCPv6 delegated prefix address");
+ link_enter_failed(link);
+ return 1;
+ } else if (r >= 0)
+ (void) manager_rtnl_process_address(rtnl, m, link->manager);
+
+ if (link->dhcp6_pd_address_messages == 0) {
+ log_link_debug(link, "DHCPv6 delegated prefix addresses set");
+ link->dhcp6_pd_address_configured = true;
+ r = link_request_set_routes(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return 1;
+ }
+ }
+
+ return 1;
+}
+
+static int dhcp6_assign_delegated_prefix(Link *link,
+ const struct in6_addr *prefix,
+ uint8_t prefix_len,
+ uint32_t lifetime_preferred,
+ uint32_t lifetime_valid) {
+
+ _cleanup_(address_freep) Address *address = NULL;
+ int r;
+
+ assert(link);
+ assert(link->network);
+ assert(prefix);
+
+ if (!link->network->dhcp6_pd_assign_prefix) {
+ link->dhcp6_pd_address_configured = true;
+ return 0;
+ }
+
+ r = address_new(&address);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Failed to allocate address for DHCPv6 delegated prefix: %m");
+
+ address->in_addr.in6 = *prefix;
+
+ if (!in_addr_is_null(AF_INET6, &link->network->dhcp6_delegation_prefix_token))
+ memcpy(address->in_addr.in6.s6_addr + 8, link->network->dhcp6_delegation_prefix_token.in6.s6_addr + 8, 8);
+ else {
+ r = generate_ipv6_eui_64_address(link, &address->in_addr.in6);
+ if (r < 0)
+ return log_link_warning_errno(link, r, "Failed to generate EUI64 address for acquired DHCPv6 delegated prefix: %m");
+ }
+
+ address->prefixlen = prefix_len;
+ address->family = AF_INET6;
+ address->cinfo.ifa_prefered = lifetime_preferred;
+ address->cinfo.ifa_valid = lifetime_valid;
+
+ /* address_handler calls link_request_set_routes() and link_request_set_nexthop(). Before they
+ * are called, the related flags must be cleared. Otherwise, the link becomes configured state
+ * before routes are configured. */
+ link->static_routes_configured = false;
+ link->static_nexthops_configured = false;
+ link->dhcp6_pd_address_configured = false;
+ link_set_state(link, LINK_STATE_CONFIGURING);
+
+ r = address_configure(address, link, dhcp6_pd_address_handler, true);
+ if (r < 0)
+ return log_link_warning_errno(link, r, "Failed to set acquired DHCPv6 delegated prefix address: %m");
+ if (r > 0)
+ link->dhcp6_pd_address_messages++;
+
+ return 0;
+}
+
+int config_parse_dhcp6_pd_hint(
+ 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 = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = in_addr_prefix_from_string(rvalue, AF_INET6, (union in_addr_union *) &network->dhcp6_pd_address, &network->dhcp6_pd_length);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse PrefixDelegationHint=%s, ignoring assignment", rvalue);
+ return 0;
+ }
+
+ if (network->dhcp6_pd_length < 1 || network->dhcp6_pd_length > 128) {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid prefix length='%d', ignoring assignment", network->dhcp6_pd_length);
+ network->dhcp6_pd_length = 0;
+ return 0;
+ }
+
+ return 0;
+}
+
+int config_parse_dhcp6_mud_url(
+ 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) {
+
+ _cleanup_free_ char *unescaped = NULL;
+ Network *network = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ network->dhcp6_mudurl = mfree(network->dhcp6_mudurl);
+ return 0;
+ }
+
+ r = cunescape(rvalue, 0, &unescaped);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Failed to Failed to unescape MUD URL, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (!http_url_is_valid(unescaped) || strlen(unescaped) > UINT8_MAX) {
+ log_syntax(unit, LOG_ERR, filename, line, 0,
+ "Failed to parse MUD URL '%s', ignoring: %m", rvalue);
+
+ return 0;
+ }
+
+ return free_and_replace(network->dhcp6_mudurl, unescaped);
+}
+
+int config_parse_dhcp6_delegated_prefix_token(
+ 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 = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (isempty(rvalue)) {
+ network->dhcp6_delegation_prefix_token = IN_ADDR_NULL;
+ return 0;
+ }
+
+ r = in_addr_from_string(AF_INET6, rvalue, &network->dhcp6_delegation_prefix_token);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Failed to parse DHCPv6 %s, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ if (in_addr_is_null(AF_INET6, &network->dhcp6_delegation_prefix_token)) {
+ log_syntax(unit, LOG_ERR, filename, line, 0,
+ "DHCPv6 %s cannot be the ANY address, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ return 0;
+}
+
+DEFINE_CONFIG_PARSE_ENUM(config_parse_dhcp6_client_start_mode, dhcp6_client_start_mode, DHCP6ClientStartMode,
+ "Failed to parse WithoutRA= setting");
+
+static const char* const dhcp6_client_start_mode_table[_DHCP6_CLIENT_START_MODE_MAX] = {
+ [DHCP6_CLIENT_START_MODE_NO] = "no",
+ [DHCP6_CLIENT_START_MODE_INFORMATION_REQUEST] = "information-request",
+ [DHCP6_CLIENT_START_MODE_SOLICIT] = "solicit",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(dhcp6_client_start_mode, DHCP6ClientStartMode);
projects / thirdparty / systemd.git / blobdiff