7388 Support DHCP Client FQDN. Allow IAID/DUID for all v4.

@@ -18,10 +18,11 @@
  *
  * CDDL HEADER END
  */
 /*
  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, Chris Fraire <cfraire@me.com>.
  */
 
 #ifndef _IPADM_IPMGMT_H
 #define _IPADM_IPMGMT_H
 

@@ -49,12 +50,12 @@
  */
 /*
  * For more information on these definitions please refer to the top of
  * ipadm_persist.c. These are the name of the nvpairs which hold the
  * respective values. All nvpairs private to ipadm have names that begin
- * with "_". Note below that 'prefixlen' is an address property and therefore
- * not a private nvpair name.
+ * with "_". Note below that 'prefixlen' and 'reqhost' are address
+ * properties and therefore not a private nvpair name.
  */
 #define IPADM_NVP_PROTONAME     "_protocol"     /* protocol name */
 #define IPADM_NVP_IFNAME        "_ifname"       /* interface name */
 #define IPADM_NVP_AOBJNAME      "_aobjname"     /* addrobj name */
 #define IPADM_NVP_FAMILY        "_family"       /* address family */

@@ -61,10 +62,11 @@
 #define IPADM_NVP_IPV4ADDR      "_ipv4addr"     /* name of IPv4 addr nvlist */
 #define IPADM_NVP_IPNUMADDR     "_addr"         /* local address */
 #define IPADM_NVP_IPADDRHNAME   "_aname"        /* local hostname */
 #define IPADM_NVP_IPDADDRHNAME  "_dname"        /* remote hostname */
 #define IPADM_NVP_PREFIXLEN     "prefixlen"     /* prefixlen */
+#define IPADM_NVP_REQHOST       "reqhost"       /* requested hostname */
 #define IPADM_NVP_IPV6ADDR      "_ipv6addr"     /* name of IPv6 addr nvlist */
 #define IPADM_NVP_DHCP          "_dhcp"         /* name of DHCP nvlist */
 #define IPADM_NVP_WAIT          "_wait"         /* DHCP timeout value */
 #define IPADM_NVP_PRIMARY       "_primary"      /* DHCP primary interface */
 #define IPADM_NVP_LIFNUM        "_lifnum"       /* logical interface number */

@@ -150,10 +152,25 @@
  *      - REDUCE updates the multi-valued property entry by removing a value
  */
 #define IPMGMT_APPEND   0x00000001
 #define IPMGMT_REMOVE   0x00000002
 
+/*
+ * ipadm_addr_type_t-specific values that are cached in ipmgmtd and can
+ * make a round-trip back to client programs
+ */
+typedef union {
+        struct {
+                boolean_t               ipmgmt_linklocal;
+                struct sockaddr_in6             ipmgmt_ifid;
+        } ipmgmt_ipv6_cache_s;
+        struct {
+                boolean_t               ipmgmt_primary;
+                char                    ipmgmt_reqhost[MAXNAMELEN];
+        } ipmgmt_dhcp_cache_s;
+} ipmgmt_addr_type_cache_u;
+
 /* IPMGMT_CMD_GETIF door_call argument structure */
 typedef struct ipmgmt_getif_arg_s {
         ipmgmt_door_cmd_type_t  ia_cmd;
         uint32_t        ia_flags;
         char            ia_ifname[LIFNAMSIZ];

@@ -219,14 +236,19 @@
  * ia_flags used inside the arguments for interface/address commands
  *      - ACTIVE updates the running configuration
  *      - PERSIST updates the permanent data store
  *      - INIT  indicates that operation being performed is under init
  *                  context
+ *      - PROPS_ONLY indicates the update changes the running configuration of
+ *                  "props" data on the interface/address object. The props are
+ *                  cached there on the parent, so a PROPS_ONLY change does not
+ *                  affect the ACTIVE/PERSIST state of the parent.
  */
 #define IPMGMT_ACTIVE           0x00000001
 #define IPMGMT_PERSIST          0x00000002
 #define IPMGMT_INIT             0x00000004
+#define IPMGMT_PROPS_ONLY               0x00000008
 
 /* door call return value */
 typedef struct ipmgmt_retval_s {
         int32_t ir_err;
 } ipmgmt_retval_t;

@@ -258,13 +280,20 @@
         char                    ir_ifname[LIFNAMSIZ];
         int32_t                 ir_lnum;
         sa_family_t             ir_family;
         uint32_t                ir_flags;
         ipadm_addr_type_t       ir_atype;
-        struct sockaddr_storage ir_ifid;
+        ipmgmt_addr_type_cache_u        ir_atype_cache;
 } ipmgmt_aobjop_rval_t;
 
+#define ipmgmt_ir_intfid        ir_atype_cache. \
+        ipmgmt_ipv6_cache_s.ipmgmt_ifid
+#define ipmgmt_ir_primary       ir_atype_cache. \
+        ipmgmt_dhcp_cache_s.ipmgmt_primary
+#define ipmgmt_ir_reqhost       ir_atype_cache. \
+        ipmgmt_dhcp_cache_s.ipmgmt_reqhost
+
 /* DB walk callback functions */
 typedef boolean_t       db_wfunc_t(void *, nvlist_t *, char *, size_t, int *);
 extern int              ipadm_rw_db(db_wfunc_t *, void *, const char *, mode_t,
                             ipadm_db_op_t);