2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #ifndef VNET_VNET_URI_TRANSPORT_H_
17 #define VNET_VNET_URI_TRANSPORT_H_
19 #include <vnet/vnet.h>
20 #include <vnet/ip/ip.h>
21 #include <vppinfra/bihash_16_8.h>
22 #include <vppinfra/bihash_48_8.h>
23 #include <vnet/tcp/tcp_debug.h>
25 * Protocol independent transport properties associated to a session
27 typedef struct _transport_connection
29 ip46_address_t rmt_ip; /**< Remote IP */
30 ip46_address_t lcl_ip; /**< Local IP */
31 u16 lcl_port; /**< Local port */
32 u16 rmt_port; /**< Remote port */
33 u8 proto; /**< Transport protocol id (also session type) */
35 u32 s_index; /**< Parent session index */
36 u32 c_index; /**< Connection index in transport pool */
37 u8 is_ip4; /**< Flag if IP4 connection */
38 u32 thread_index; /**< Worker-thread index */
41 elog_track_t elog_track; /**< Event logging */
42 u32 cc_stat_tstamp; /**< CC stats timestamp */
45 /** Macros for 'derived classes' where base is named "connection" */
46 #define c_lcl_ip connection.lcl_ip
47 #define c_rmt_ip connection.rmt_ip
48 #define c_lcl_ip4 connection.lcl_ip.ip4
49 #define c_rmt_ip4 connection.rmt_ip.ip4
50 #define c_lcl_ip6 connection.lcl_ip.ip6
51 #define c_rmt_ip6 connection.rmt_ip.ip6
52 #define c_lcl_port connection.lcl_port
53 #define c_rmt_port connection.rmt_port
54 #define c_proto connection.proto
55 #define c_state connection.state
56 #define c_s_index connection.s_index
57 #define c_c_index connection.c_index
58 #define c_is_ip4 connection.is_ip4
59 #define c_thread_index connection.thread_index
60 #define c_elog_track connection.elog_track
61 #define c_cc_stat_tstamp connection.cc_stat_tstamp
62 } transport_connection_t;
65 * Transport protocol virtual function table
67 typedef struct _transport_proto_vft
72 u32 (*bind) (u32, ip46_address_t *, u16);
74 int (*open) (ip46_address_t * addr, u16 port_host_byte_order);
75 void (*close) (u32 conn_index, u32 thread_index);
76 void (*cleanup) (u32 conn_index, u32 thread_index);
81 u32 (*push_header) (transport_connection_t * tconn, vlib_buffer_t * b);
82 u16 (*send_mss) (transport_connection_t * tc);
83 u32 (*send_space) (transport_connection_t * tc);
84 u32 (*tx_fifo_offset) (transport_connection_t * tc);
87 * Connection retrieval
89 transport_connection_t *(*get_connection) (u32 conn_idx, u32 thread_idx);
90 transport_connection_t *(*get_listener) (u32 conn_index);
91 transport_connection_t *(*get_half_open) (u32 conn_index);
96 u8 *(*format_connection) (u8 * s, va_list * args);
97 u8 *(*format_listener) (u8 * s, va_list * args);
98 u8 *(*format_half_open) (u8 * s, va_list * args);
99 } transport_proto_vft_t;
103 typedef CLIB_PACKED (struct {
112 /* align by making this 4 octets even though its a 1-bit field
113 * NOTE: avoid key overlap with other transports that use 5 tuples for
114 * session identification.
120 }) v4_connection_key_t;
122 typedef CLIB_PACKED (struct {
137 }) v6_connection_key_t;
140 typedef clib_bihash_kv_16_8_t session_kv4_t;
141 typedef clib_bihash_kv_48_8_t session_kv6_t;
144 make_v4_ss_kv (session_kv4_t * kv, ip4_address_t * lcl, ip4_address_t * rmt,
145 u16 lcl_port, u16 rmt_port, u8 proto)
147 v4_connection_key_t *key = (v4_connection_key_t *) kv->key;
149 key->src.as_u32 = lcl->as_u32;
150 key->dst.as_u32 = rmt->as_u32;
151 key->src_port = lcl_port;
152 key->dst_port = rmt_port;
159 make_v4_listener_kv (session_kv4_t * kv, ip4_address_t * lcl, u16 lcl_port,
162 v4_connection_key_t *key = (v4_connection_key_t *) kv->key;
164 key->src.as_u32 = lcl->as_u32;
166 key->src_port = lcl_port;
174 make_v4_ss_kv_from_tc (session_kv4_t * kv, transport_connection_t * t)
176 return make_v4_ss_kv (kv, &t->lcl_ip.ip4, &t->rmt_ip.ip4, t->lcl_port,
177 t->rmt_port, t->proto);
181 make_v6_ss_kv (session_kv6_t * kv, ip6_address_t * lcl, ip6_address_t * rmt,
182 u16 lcl_port, u16 rmt_port, u8 proto)
184 v6_connection_key_t *key = (v6_connection_key_t *) kv->key;
186 key->src.as_u64[0] = lcl->as_u64[0];
187 key->src.as_u64[1] = lcl->as_u64[1];
188 key->dst.as_u64[0] = rmt->as_u64[0];
189 key->dst.as_u64[1] = rmt->as_u64[1];
190 key->src_port = lcl_port;
191 key->dst_port = rmt_port;
199 make_v6_listener_kv (session_kv6_t * kv, ip6_address_t * lcl, u16 lcl_port,
202 v6_connection_key_t *key = (v6_connection_key_t *) kv->key;
204 key->src.as_u64[0] = lcl->as_u64[0];
205 key->src.as_u64[1] = lcl->as_u64[1];
206 key->dst.as_u64[0] = 0;
207 key->dst.as_u64[1] = 0;
208 key->src_port = lcl_port;
217 make_v6_ss_kv_from_tc (session_kv6_t * kv, transport_connection_t * t)
219 make_v6_ss_kv (kv, &t->lcl_ip.ip6, &t->rmt_ip.ip6, t->lcl_port,
220 t->rmt_port, t->proto);
223 typedef struct _transport_endpoint
225 ip46_address_t ip; /** ip address */
226 u16 port; /** port in host order */
227 u8 is_ip4; /** 1 if ip4 */
228 u32 vrf; /** fib table the endpoint is associated with */
229 } transport_endpoint_t;
231 typedef clib_bihash_24_8_t transport_endpoint_table_t;
233 #define TRANSPORT_ENDPOINT_INVALID_INDEX ((u32)~0)
236 transport_endpoint_lookup (transport_endpoint_table_t * ht,
237 ip46_address_t * ip, u16 port);
238 void transport_endpoint_table_add (transport_endpoint_table_t * ht,
239 transport_endpoint_t * te, u32 value);
240 void transport_endpoint_table_del (transport_endpoint_table_t * ht,
241 transport_endpoint_t * te);
243 #endif /* VNET_VNET_URI_TRANSPORT_H_ */
246 * fd.io coding-style-patch-verification: ON
249 * eval: (c-set-style "gnu")