From: Francis Dupont <fdupont@isc.org>
Date: Sat, 31 Oct 2015 10:04:52 +0000 (+0100)
Subject: [4109] Ported changes from fd4o6
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=37555efa0fd43dc209b9bb8e465be84dd3fc4a09;p=thirdparty%2Fkea.git

[4109] Ported changes from fd4o6
---

diff --git a/src/bin/dhcp6/dhcp6_srv.cc b/src/bin/dhcp6/dhcp6_srv.cc
index 2f0687b60f..8b5554d3a3 100644
--- a/src/bin/dhcp6/dhcp6_srv.cc
+++ b/src/bin/dhcp6/dhcp6_srv.cc
@@ -555,6 +555,10 @@ bool Dhcpv6Srv::run() {
                 rsp = processInfRequest(query);
                 break;
 
+            case DHCPV6_DHCPV4_QUERY:
+                rsp = processDhcp4Query(query);
+                break;
+
             default:
                 // We received a packet type that we do not recognize.
                 LOG_DEBUG(bad_packet6_logger, DBG_DHCP6_BASIC, DHCP6_UNKNOWN_MSG_RECEIVED)
@@ -2789,6 +2793,26 @@ Dhcpv6Srv::processInfRequest(const Pkt6Ptr& inf_request) {
     return (reply);
 }
 
+Pkt6Ptr
+Dhcpv6Srv::processDhcp4Query(const Pkt6Ptr& dhcp4_query) {
+
+    sanityCheck(dhcp4_query, OPTIONAL, OPTIONAL);
+
+    // flags are in transid
+    // uint32_t flags = dhcp4_query->getTransid();
+    // do nothing with DHCPV4_QUERY_FLAGS_UNICAST
+
+    // Get the DHCPv4 message option
+    OptionPtr dhcp4_msg = dhcp4_query->getOption(D6O_DHCPV4_MSG);
+    if (dhcp4_msg) {
+        // Forward the whole message to the DHCPv4 server via IPC
+        Dhcp4o6Ipc::instance().send(dhcp4_query);
+    }
+
+    // Our job is finished
+    return (Pkt6Ptr());
+}
+
 size_t
 Dhcpv6Srv::unpackOptions(const OptionBuffer& buf,
                          const std::string& option_space,
diff --git a/src/bin/dhcp6/dhcp6_srv.h b/src/bin/dhcp6/dhcp6_srv.h
index 1609af068c..e5fc32d078 100644
--- a/src/bin/dhcp6/dhcp6_srv.h
+++ b/src/bin/dhcp6/dhcp6_srv.h
@@ -282,6 +282,12 @@ protected:
     /// @return Reply message to be sent to the client.
     Pkt6Ptr processInfRequest(const Pkt6Ptr& inf_request);
 
+    /// @brief Processes incoming DHCPv4-query message.
+    ///
+    /// @param dhcp4_query message received from client
+    /// @return Reply (empty) message to (not) be sent to the client.
+    Pkt6Ptr processDhcp4Query(const Pkt6Ptr& dhcp4_query);
+
     /// @brief Selects a subnet for a given client's packet.
     ///
     /// @param question client's message