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Diffstat (limited to 'src/vnet/dns/dns.h')
| -rw-r--r-- | src/vnet/dns/dns.h | 221 |
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: - */ |