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
|
/*---------------------------------------------------------------
* Copyright (c) 2019
* Broadcom Corporation
* All Rights Reserved.
*---------------------------------------------------------------
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated
* documentation files (the "Software"), to deal in the Software
* without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute,
* sublicense, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and
* the following disclaimers.
*
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimers in the documentation and/or other materials
* provided with the distribution.
*
*
* Neither the name of Broadcom Coporation,
* nor the names of its contributors may be used to endorse
* or promote products derived from this Software without
* specific prior written permission.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE CONTIBUTORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
* ________________________________________________________________
*
* packet_ring.h
* Suppport for packet rings between threads
*
* by Robert J. McMahon (rjmcmahon@rjmcmahon.com, bob.mcmahon@broadcom.com)
* -------------------------------------------------------------------
*/
#ifndef PACKETRINGC_H
#define PACKETRINGC_H
#include "Condition.h"
#include "gettcpinfo.h"
#ifdef __cplusplus
extern "C" {
#endif
#define ACKRING_DEFAULTSIZE 100
enum ReadWriteExtReturnVals {
ReadSuccess = 1,
ReadTimeo,
ReadTimeoFatal,
ReadErrLen,
ReadNoAccount,
WriteSuccess,
WriteSelectRetry,
WriteErrAccount,
WriteErrFatal,
WriteTimeo,
WriteNoAccount,
NullEvent
};
enum edgeLevel {
LOW = 0,
HIGH = 1
};
struct ReportStruct {
intmax_t packetID;
intmax_t packetLen;
struct timeval packetTime;
struct timeval prevPacketTime;
struct timeval sentTime;
struct timeval prevSentTime;
enum ReadWriteExtReturnVals err_readwrite;
bool emptyreport;
int l2errors;
int l2len;
int expected_l2len;
// isochStartTime is overloaded: first write timestamp of the frame or burst w/trip-times or very first read w/o trip-times
// reporter calculation will compute latency accordingly
struct timeval isochStartTime;
uint32_t prevframeID;
uint32_t frameID;
uint32_t burstsize;
uint32_t burstperiod;
uint32_t remaining;
bool transit_ready;
int writecnt;
long write_time;
bool scheduled;
long sched_err;
struct timeval sentTimeRX;
struct timeval sentTimeTX;
struct iperf_tcpstats tcpstats;
#if defined(HAVE_DECL_SO_MAX_PACING_RATE)
intmax_t FQPacingRate;
#endif
};
struct PacketRing {
// producer and consumer
// must be an atomic type, e.g. int
// otherwise reads/write can be torn
int producer;
int consumer;
int maxcount;
bool consumerdone;
int awaitcounter;
bool mutex_enable;
int bytes;
enum edgeLevel uplevel;
enum edgeLevel downlevel;
// Use a condition variables
// o) awake_producer - producer waits for the consumer thread to
// make space or end (signaled by the consumer)
// o) awake_consumer - signal the consumer thread to to run
// (signaled by the producer)
struct Condition *awake_producer;
struct Condition *awake_consumer;
struct ReportStruct *data;
};
extern struct PacketRing * packetring_init(int count, struct Condition *awake_consumer, struct Condition *awake_producer);
extern void packetring_enqueue(struct PacketRing *pr, struct ReportStruct *metapacket);
extern struct ReportStruct *packetring_dequeue(struct PacketRing * pr);
extern void enqueue_ackring(struct PacketRing *pr, struct ReportStruct *metapacket);
extern struct ReportStruct *dequeue_ackring(struct PacketRing * pr);
extern void packetring_free(struct PacketRing *pr);
extern void free_ackring(struct PacketRing *pr);
extern enum edgeLevel toggleLevel(enum edgeLevel level);
#ifdef HAVE_THREAD_DEBUG
extern int packetring_getcount(struct PacketRing *pr);
#endif
#ifdef __cplusplus
} /* end extern "C" */
#endif
#endif // PACKETRINGC_H
|
