dns: make the dns name resolver a plugin

Type: refactor
Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I823c2cd307a4613653a2d20f564dda062d4da31b

1 files changed, 0 insertions, 221 deletions

diff --git a/src/vnet/dns/dns.h b/src/vnet/dns/dns.h
deleted file mode 100644
index 6d0901020f9..00000000000
--- a/src/vnet/dns/dns.h
+++ /dev/null
@@ -1,221 +0,0 @@
-/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef included_dns_h
-#define included_dns_h
-
-#include <vppinfra/time.h>
-#include <vppinfra/cache.h>
-#include <vppinfra/error.h>
-
-#include <vppinfra/hash.h>
-#include <vnet/dns/dns_packet.h>
-#include <vnet/ip/ip.h>
-#include <vppinfra/lock.h>
-
-typedef struct
-{
-  u32 request_type;
-  u32 client_index;
-  u32 client_context;
-  u8 is_ip6;
-  u16 dst_port;
-  u16 id;
-  u16 pad;
-  u8 dst_address[16];
-  u8 *name;
-} dns_pending_request_t;
-
-typedef enum
-{
-  DNS_API_PENDING_NAME_TO_IP = 1,
-  DNS_API_PENDING_IP_TO_NAME,
-  DNS_PEER_PENDING_NAME_TO_IP,
-  DNS_PEER_PENDING_IP_TO_NAME,
-} dns_pending_request_type_t;
-
-typedef struct
-{
-  /** flags */
-  volatile u8 flags;
-
-  /** The name in "normal human being" notation, e.g. www.foobar.com */
-  u8 *name;
-
-  /** For CNAME records, the "next name" to resolve */
-  u8 *cname;
-
-  /** Expiration time */
-  f64 expiration_time;
-
-  /** Cached dns request, for sending retries */
-  u8 *dns_request;
-
-  /** Retry parameters */
-  int retry_count;
-  int server_rotor;
-  int server_af;
-  int server_fails;
-  f64 retry_timer;
-
-  /** Cached dns response */
-  u8 *dns_response;
-
-  /** Clients / peers awaiting responses */
-  dns_pending_request_t *pending_requests;
-} dns_cache_entry_t;
-
-#define DNS_CACHE_ENTRY_FLAG_VALID	(1<<0) /**< we have Actual Data */
-#define DNS_CACHE_ENTRY_FLAG_STATIC	(1<<1) /**< static entry */
-#define DNS_CACHE_ENTRY_FLAG_CNAME	(1<<2) /**< CNAME (indirect) entry */
-
-#define DNS_RETRIES_PER_SERVER 3
-
-#define DNS_RESOLVER_EVENT_RESOLVED	1
-#define DNS_RESOLVER_EVENT_PENDING	2
-
-
-typedef struct
-{
-  /** Pool of cache entries */
-  dns_cache_entry_t *entries;
-
-  /** Pool indices of unresolved entries */
-  u32 *unresolved_entries;
-
-  /** Find cached record by name */
-  uword *cache_entry_by_name;
-  clib_spinlock_t cache_lock;
-
-  /** enable / disable flag */
-  int is_enabled;
-
-  /** udp port registration complete */
-  int udp_ports_registered;
-
-  /** upstream name servers, e.g. 8.8.8.8 */
-  ip4_address_t *ip4_name_servers;
-  ip6_address_t *ip6_name_servers;
-
-  /** resolver process node index */
-  u32 resolver_process_node_index;
-
-  /** config parameters */
-  u32 name_cache_size;
-  u32 max_ttl_in_seconds;
-  u32 random_seed;
-
-  /* convenience */
-  vlib_main_t *vlib_main;
-  vnet_main_t *vnet_main;
-} dns_main_t;
-
-extern dns_main_t dns_main;
-
-extern vlib_node_registration_t dns46_reply_node;
-extern vlib_node_registration_t dns4_request_node;
-extern vlib_node_registration_t dns6_request_node;
-
-#define foreach_dns46_request_error                                     \
-_(NONE, "No error")							\
-_(UNIMPLEMENTED, "Unimplemented")                                       \
-_(PROCESSED, "DNS request pkts processed")                              \
-_(IP_OPTIONS, "DNS pkts with ip options (dropped)")                     \
-_(BAD_REQUEST, "DNS pkts with serious discrepanices (dropped)")         \
-_(TOO_MANY_REQUESTS, "DNS pkts asking too many questions")              \
-_(RESOLUTION_REQUIRED, "DNS pkts pending upstream name resolution")
-
-typedef enum
-{
-#define _(sym,str) DNS46_REQUEST_ERROR_##sym,
-  foreach_dns46_request_error
-#undef _
-    DNS46_REQUEST_N_ERROR,
-} dns46_request_error_t;
-
-#define foreach_dns46_reply_error                       \
-_(DISABLED, "DNS pkts punted (feature disabled)")       \
-_(PROCESSED, "DNS reply pkts processed")                \
-_(NO_ELT, "No DNS pool element")                        \
-_(FORMAT_ERROR, "DNS format errors")                    \
-_(TEST_DROP, "DNS reply pkt dropped for test purposes") \
-_(MULTIPLE_REPLY, "DNS multiple reply packets")	        \
-_(NO_UNRESOLVED_ENTRY, "No unresolved entry for pkt")
-
-typedef enum
-{
-#define _(sym,str) DNS46_REPLY_ERROR_##sym,
-  foreach_dns46_reply_error
-#undef _
-    DNS46_REPLY_N_ERROR,
-} dns46_reply_error_t;
-
-void vnet_send_dns_request (dns_main_t * dm, dns_cache_entry_t * ep);
-int
-vnet_dns_cname_indirection_nolock (dns_main_t * dm, u32 ep_index, u8 * reply);
-
-int vnet_dns_delete_entry_by_index_nolock (dns_main_t * dm, u32 index);
-
-int
-vnet_dns_resolve_name (dns_main_t * dm, u8 * name, dns_pending_request_t * t,
-		       dns_cache_entry_t ** retp);
-
-void
-vnet_dns_send_dns6_request (dns_main_t * dm,
-			    dns_cache_entry_t * ep, ip6_address_t * server);
-void
-vnet_dns_send_dns4_request (dns_main_t * dm,
-			    dns_cache_entry_t * ep, ip4_address_t * server);
-
-void vnet_send_dns4_reply (dns_main_t * dm, dns_pending_request_t * t,
-			   dns_cache_entry_t * ep, vlib_buffer_t * b0);
-
-void vnet_send_dns6_reply (dns_main_t * dm, dns_pending_request_t * t,
-			   dns_cache_entry_t * ep, vlib_buffer_t * b0);
-
-u8 *vnet_dns_labels_to_name (u8 * label, u8 * full_text,
-			     u8 ** parse_from_here);
-
-void vnet_dns_create_resolver_process (dns_main_t * dm);
-
-format_function_t format_dns_reply;
-
-static inline void
-dns_cache_lock (dns_main_t * dm)
-{
-  if (dm->cache_lock)
-    {
-      clib_spinlock_lock (&dm->cache_lock);
-    }
-}
-
-static inline void
-dns_cache_unlock (dns_main_t * dm)
-{
-  if (dm->cache_lock)
-    {
-      clib_spinlock_unlock (&dm->cache_lock);
-    }
-}
-
-#endif /* included_dns_h */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */