2 * Copyright (c) 2017-2019 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 SRC_VNET_SESSION_TRANSPORT_INTERFACE_H_
17 #define SRC_VNET_SESSION_TRANSPORT_INTERFACE_H_
19 #include <vnet/vnet.h>
20 #include <vnet/session/transport.h>
23 * Transport protocol virtual function table
26 typedef struct _transport_proto_vft
31 u32 (*bind) (u32 session_index, transport_endpoint_t * lcl);
33 int (*open) (transport_endpoint_cfg_t * rmt);
34 void (*close) (u32 conn_index, u32 thread_index);
35 void (*cleanup) (u32 conn_index, u32 thread_index);
36 clib_error_t *(*enable) (vlib_main_t * vm, u8 is_en);
42 u32 (*push_header) (transport_connection_t * tconn, vlib_buffer_t * b);
43 u16 (*send_mss) (transport_connection_t * tc);
44 u32 (*send_space) (transport_connection_t * tc);
45 u32 (*tx_fifo_offset) (transport_connection_t * tc);
46 void (*update_time) (f64 time_now, u8 thread_index);
47 void (*flush_data) (transport_connection_t *tconn);
50 * Connection retrieval
52 transport_connection_t *(*get_connection) (u32 conn_idx, u32 thread_idx);
53 transport_connection_t *(*get_listener) (u32 conn_index);
54 transport_connection_t *(*get_half_open) (u32 conn_index);
59 u8 *(*format_connection) (u8 * s, va_list * args);
60 u8 *(*format_listener) (u8 * s, va_list * args);
61 u8 *(*format_half_open) (u8 * s, va_list * args);
66 transport_tx_fn_type_t tx_type;
67 transport_service_type_t service_type;
68 } transport_proto_vft_t;
71 extern transport_proto_vft_t *tp_vfts;
73 #define transport_proto_foreach(VAR, BODY) \
75 for (VAR = 0; VAR < vec_len (tp_vfts); VAR++) \
76 if (tp_vfts[VAR].push_header != 0) \
77 do { BODY; } while (0); \
80 void transport_register_protocol (transport_proto_t transport_proto,
81 const transport_proto_vft_t * vft,
82 fib_protocol_t fib_proto, u32 output_node);
83 transport_proto_vft_t *transport_protocol_get_vft (transport_proto_t tp);
84 void transport_update_time (f64 time_now, u8 thread_index);
85 transport_connection_t *transport_get_connection (transport_proto_t tp,
88 transport_connection_t *transport_get_listener (transport_proto_t tp,
90 void transport_enable_disable (vlib_main_t * vm, u8 is_en);
93 transport_elog_track_index (transport_connection_t * tc)
96 return tc->elog_track.track_index_plus_one - 1;
102 void transport_connection_tx_pacer_reset (transport_connection_t * tc,
103 u32 rate_bytes_per_sec,
104 u32 initial_bucket, u64 time_now);
106 * Initialize tx pacer for connection
108 * @param tc transport connection
109 * @param rate_bytes_per_second initial byte rate
110 * @param burst_bytes initial burst size in bytes
112 void transport_connection_tx_pacer_init (transport_connection_t * tc,
113 u32 rate_bytes_per_sec,
117 * Update tx pacer pacing rate
119 * @param tc transport connection
120 * @param bytes_per_sec new pacing rate
122 void transport_connection_tx_pacer_update (transport_connection_t * tc,
126 * Get maximum tx burst allowed for transport connection
128 * @param tc transport connection
129 * @param time_now current cpu time as returned by @ref clib_cpu_time_now
130 * @param mss transport's mss
132 u32 transport_connection_snd_space (transport_connection_t * tc,
133 u64 time_now, u16 mss);
135 u32 transport_connection_tx_pacer_burst (transport_connection_t * tc,
139 * Initialize period for tx pacers
141 * Defines a unit of time with respect to number of cpu cycles that is to
142 * be used by all tx pacers.
144 void transport_init_tx_pacers_period (void);
147 * Check if transport connection is paced
150 transport_connection_is_tx_paced (transport_connection_t * tc)
152 return (tc->flags & TRANSPORT_CONNECTION_F_IS_TX_PACED);
155 u8 *format_transport_pacer (u8 * s, va_list * args);
158 * Update tx byte stats for transport connection
160 * If tx pacing is enabled, this also updates pacer bucket to account for the
161 * amount of bytes that have been sent.
163 * @param tc transport connection
164 * @param pkts packets recently sent
165 * @param bytes bytes recently sent
167 void transport_connection_update_tx_stats (transport_connection_t * tc,
171 transport_connection_tx_pacer_update_bytes (transport_connection_t * tc,
174 #endif /* SRC_VNET_SESSION_TRANSPORT_INTERFACE_H_ */
177 * fd.io coding-style-patch-verification: ON
180 * eval: (c-set-style "gnu")