Define Async DNS structures. Add new dns functions. Add DLPI functions.

diff --git a/includes/dhcpd.h b/includes/dhcpd.h
index e9ea614e5944ae9c5e19cb55183a46584d409eac..f5aaa888b185b315b73801e03d3f49b6a26cadd6 100644 (file)
--- a/includes/dhcpd.h
+++ b/includes/dhcpd.h
@@ -385,6 +385,34 @@ struct protocol {
        void *local;
 };
 
+struct dns_query; /* forward */
+
+struct dns_wakeup {
+       struct dns_wakeup *next;        /* Next wakeup in chain. */
+       void (*func) PROTO ((struct dns_query *));
+};
+
+struct dns_query {
+       struct dns_query *next;         /* Next query in hash bucket. */
+       TIME expiry;                    /* Query expiry time (zero if not yet
+                                          answered. */
+       u_int16_t id;                   /* Query ID (also hash table index) */
+       caddr_t waiters;                /* Pointer to list of things waiting
+                                          on this query. */
+       unsigned char buf [512];        /* Query buffer. */
+       unsigned char *question;        /* Pointer to question being asked,
+                                          within query buffer. */
+       int question_len;               /* Length of name (we hash on name) */
+       unsigned char *answer;          /* Pointer to answer to question. */
+       int answer_len;                 /* Length of answer. */
+       int len;                        /* Length of entire query. */
+       int sent;                       /* The query has been sent. */
+       struct dns_wakeup *wakeups;     /* Wakeups to call if this query is
+                                          answered. */
+       struct name_server *next_server;        /* Next server to try. */
+       int backoff;                    /* Current backoff, in seconds. */
+};
+
 /* Bitmask of dhcp option codes. */
 typedef unsigned char option_mask [16];
 
@@ -715,10 +743,28 @@ ssize_t receive_packet PROTO ((struct interface_info *,
                               unsigned char *, size_t,
                               struct sockaddr_in *, struct hardware *));
 #endif
-#if defined (USE_BPF_SEND)
+#if defined (USE_NIT_SEND)
 void if_enable PROTO ((struct interface_info *));
 #endif
 
+
+/* dlpi.c */
+#ifdef USE_DLPI_SEND
+void if_register_send PROTO ((struct interface_info *, struct ifreq *));
+size_t send_packet PROTO ((struct interface_info *,
+                          struct packet *, struct dhcp_packet *, size_t,
+                          struct in_addr,
+                          struct sockaddr_in *, struct hardware *));
+#endif
+#ifdef USE_DLPI_RECEIVE
+void if_register_receive PROTO ((struct interface_info *, struct ifreq *));
+size_t receive_packet PROTO ((struct interface_info *,
+                            unsigned char *, size_t,
+                            struct sockaddr_in *, struct hardware *));
+#endif
+
+
+
 /* raw.c */
 #ifdef USE_RAW_SEND
 void if_reinitialize_send PROTO ((struct interface_info *));
@@ -923,7 +969,10 @@ void icmp_echoreply PROTO ((struct protocol *));
 
 /* dns.c */
 void dns_startup PROTO ((void));
-int ns_inaddr_lookup PROTO ((u_int16_t, struct iaddr));
+struct dns_query *ns_inaddr_lookup PROTO ((struct iaddr, struct dns_wakeup *));
+struct dns_query *ns_query PROTO ((unsigned char *, int, struct dns_wakeup *));
+struct dns_query *find_dns_query PROTO ((unsigned char *, int, int));
+void dns_timeout PROTO ((void *));
 void dns_packet PROTO ((struct protocol *));
 
 /* resolv.c */
@@ -932,7 +981,7 @@ struct name_server *name_servers;
 struct domain_search_list *domains;
 
 void read_resolv_conf PROTO ((TIME));
-struct sockaddr_in *pick_name_server PROTO ((void));
+struct name_server *first_name_server PROTO ((void));
 
 /* inet_addr.c */
 #ifdef NEED_INET_ATON