sd-dhcp6-client: Implement Rapid Commit

Add a Rapid Commit option to Solicit messages and expect a Reply to
be received instead of an Advertise. When receiving a DHCPv6 message
from the server in state Solicit, continue testing whether the
message is a Reply. Ease up the message type checking, it's not fatal
if the message is of a wrong type.

Add helper functions to set/get the rapid commit of a lease. See
RFC 3315, sections 17., 17.1.2., 17.1.4. and 18.1.8.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/libsystemd-network/dhcp6-lease-internal.h b/src/libsystemd-network/dhcp6-lease-internal.h
index 62c16c5b6d..109e0f4f21 100644
--- a/src/libsystemd-network/dhcp6-lease-internal.h
+++ b/src/libsystemd-network/dhcp6-lease-internal.h
@@ -35,6 +35,7 @@ struct sd_dhcp6_lease {
         uint8_t *serverid;
         size_t serverid_len;
         uint8_t preference;
+        bool rapid_commit;
 
         DHCP6IA ia;
 
@@ -50,6 +51,9 @@ int dhcp6_lease_set_serverid(sd_dhcp6_lease *lease, const uint8_t *id,
 int dhcp6_lease_get_serverid(sd_dhcp6_lease *lease, uint8_t **id, size_t *len);
 int dhcp6_lease_set_preference(sd_dhcp6_lease *lease, uint8_t preference);
 int dhcp6_lease_get_preference(sd_dhcp6_lease *lease, uint8_t *preference);
+int dhcp6_lease_set_rapid_commit(sd_dhcp6_lease *lease);
+int dhcp6_lease_get_rapid_commit(sd_dhcp6_lease *lease, bool *rapid_commit);
+
 int dhcp6_lease_get_iaid(sd_dhcp6_lease *lease, be32_t *iaid);
 
 int dhcp6_lease_new(sd_dhcp6_lease **ret);