aboutsummaryrefslogtreecommitdiffstats
path: root/src/vnet/session/stream_session.h
blob: 57d256cdbc609f3f5f663b3e02b855dad33c10ed (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
/*
 * 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 SRC_VNET_SESSION_STREAM_SESSION_H_
#define SRC_VNET_SESSION_STREAM_SESSION_H_

#include <vnet/vnet.h>
#include <svm/svm_fifo.h>
#include <vnet/session/transport.h>

typedef u8 session_type_t;

/*
 * Application session state
 */
typedef enum
{
  SESSION_STATE_LISTENING,
  SESSION_STATE_CONNECTING,
  SESSION_STATE_ACCEPTING,
  SESSION_STATE_READY,
  SESSION_STATE_CONNECTING_READY,
  SESSION_STATE_CLOSED,
  SESSION_STATE_N_STATES,
} stream_session_state_t;

/* TODO convert to macro once cleanup completed */
typedef struct app_session_
{
  /** fifo pointers. Once allocated, these do not move */
  svm_fifo_t *server_rx_fifo;
  svm_fifo_t *server_tx_fifo;

  /** Type */
  session_type_t session_type;

  /** State */
  volatile u8 session_state;

  /** Session index in owning pool */
  u32 session_index;

  /** Application index */
  u32 app_index;
} app_session_t;

typedef struct _stream_session_t
{
  /** fifo pointers. Once allocated, these do not move */
  svm_fifo_t *server_rx_fifo;
  svm_fifo_t *server_tx_fifo;

  /** Type */
  session_type_t session_type;

  /** State */
  volatile u8 session_state;

  /** Session index in per_thread pool */
  u32 session_index;

  /** stream server pool index */
  u32 app_index;

  u8 thread_index;

  /** To avoid n**2 "one event per frame" check */
  u8 enqueue_epoch;

  /** svm segment index where fifos were allocated */
  u32 svm_segment_index;

  /** Transport specific */
  u32 connection_index;

  /** Parent listener session if the result of an accept */
  u32 listener_index;

    CLIB_CACHE_LINE_ALIGN_MARK (pad);
} stream_session_t;

typedef struct local_session_
{
  /** fifo pointers. Once allocated, these do not move */
  svm_fifo_t *server_rx_fifo;
  svm_fifo_t *server_tx_fifo;

  /** Type */
  session_type_t session_type;

  /** State */
  volatile u8 session_state;

  /** Session index */
  u32 session_index;

  /** Server index */
  u32 app_index;

  /** Segment index where fifos were allocated */
  u32 svm_segment_index;

  u32 listener_index;

  /** Port for connection */
  u16 port;

  /** Has transport embedded when listener not purely local */
  session_type_t listener_session_type;

  /**
   * Client data
   */
  u32 client_index;
  u32 client_opaque;

  u64 server_evt_q;
  u64 client_evt_q;

    CLIB_CACHE_LINE_ALIGN_MARK (pad);
} local_session_t;

typedef struct _session_endpoint
{
  /*
   * Network specific
   */
#define _(type, name) type name;
  foreach_transport_connection_fields
#undef _
    /*
     * Session specific
     */
  u8 transport_proto;	/**< transport protocol for session */
} session_endpoint_t;

#define SESSION_IP46_ZERO		\
{					\
    .ip6 = {				\
	{ 0, 0, },			\
    },					\
}
#define SESSION_ENDPOINT_NULL 		\
{					\
  .sw_if_index = ENDPOINT_INVALID_INDEX,	\
  .ip = SESSION_IP46_ZERO,		\
  .fib_index = ENDPOINT_INVALID_INDEX,	\
  .is_ip4 = 0,				\
  .port = 0,				\
  .transport_proto = 0,			\
}

#define session_endpoint_to_transport(_sep) ((transport_endpoint_t *)_sep)

always_inline u8
session_endpoint_fib_proto (session_endpoint_t * sep)
{
  return sep->is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
}

#endif /* SRC_VNET_SESSION_STREAM_SESSION_H_ */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */