1 // SPDX-License-Identifier: GPL-2.0
2 /* Test program for SIOC{G,S}HWTSTAMP
3 * Copyright 2013 Solarflare Communications
4 * Author: Ben Hutchings
5 */
6
7 #include <errno.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11
12 #include <sys/socket.h>
13 #include <sys/ioctl.h>
14
15 #include <linux/if.h>
16 #include <linux/net_tstamp.h>
17 #include <linux/sockios.h>
18
19 #include "kselftest.h"
20
21 static int
lookup_value(const char ** names,int size,const char * name)22 lookup_value(const char **names, int size, const char *name)
23 {
24 int value;
25
26 for (value = 0; value < size; value++)
27 if (names[value] && strcasecmp(names[value], name) == 0)
28 return value;
29
30 return -1;
31 }
32
33 static const char *
lookup_name(const char ** names,int size,int value)34 lookup_name(const char **names, int size, int value)
35 {
36 return (value >= 0 && value < size) ? names[value] : NULL;
37 }
38
list_names(FILE * f,const char ** names,int size)39 static void list_names(FILE *f, const char **names, int size)
40 {
41 int value;
42
43 for (value = 0; value < size; value++)
44 if (names[value])
45 fprintf(f, " %s\n", names[value]);
46 }
47
48 static const char *tx_types[] = {
49 #define TX_TYPE(name) [HWTSTAMP_TX_ ## name] = #name
50 TX_TYPE(OFF),
51 TX_TYPE(ON),
52 TX_TYPE(ONESTEP_SYNC)
53 #undef TX_TYPE
54 };
55 #define N_TX_TYPES ((int)(ARRAY_SIZE(tx_types)))
56
57 static const char *rx_filters[] = {
58 #define RX_FILTER(name) [HWTSTAMP_FILTER_ ## name] = #name
59 RX_FILTER(NONE),
60 RX_FILTER(ALL),
61 RX_FILTER(SOME),
62 RX_FILTER(PTP_V1_L4_EVENT),
63 RX_FILTER(PTP_V1_L4_SYNC),
64 RX_FILTER(PTP_V1_L4_DELAY_REQ),
65 RX_FILTER(PTP_V2_L4_EVENT),
66 RX_FILTER(PTP_V2_L4_SYNC),
67 RX_FILTER(PTP_V2_L4_DELAY_REQ),
68 RX_FILTER(PTP_V2_L2_EVENT),
69 RX_FILTER(PTP_V2_L2_SYNC),
70 RX_FILTER(PTP_V2_L2_DELAY_REQ),
71 RX_FILTER(PTP_V2_EVENT),
72 RX_FILTER(PTP_V2_SYNC),
73 RX_FILTER(PTP_V2_DELAY_REQ),
74 #undef RX_FILTER
75 };
76 #define N_RX_FILTERS ((int)(ARRAY_SIZE(rx_filters)))
77
usage(void)78 static void usage(void)
79 {
80 fputs("Usage: hwtstamp_config if_name [tx_type rx_filter]\n"
81 "tx_type is any of (case-insensitive):\n",
82 stderr);
83 list_names(stderr, tx_types, N_TX_TYPES);
84 fputs("rx_filter is any of (case-insensitive):\n", stderr);
85 list_names(stderr, rx_filters, N_RX_FILTERS);
86 }
87
main(int argc,char ** argv)88 int main(int argc, char **argv)
89 {
90 struct ifreq ifr;
91 struct hwtstamp_config config;
92 const char *name;
93 int sock;
94
95 if ((argc != 2 && argc != 4) || (strlen(argv[1]) >= IFNAMSIZ)) {
96 usage();
97 return 2;
98 }
99
100 if (argc == 4) {
101 config.flags = 0;
102 config.tx_type = lookup_value(tx_types, N_TX_TYPES, argv[2]);
103 config.rx_filter = lookup_value(rx_filters, N_RX_FILTERS, argv[3]);
104 if (config.tx_type < 0 || config.rx_filter < 0) {
105 usage();
106 return 2;
107 }
108 }
109
110 sock = socket(AF_INET, SOCK_DGRAM, 0);
111 if (sock < 0) {
112 perror("socket");
113 return 1;
114 }
115
116 strcpy(ifr.ifr_name, argv[1]);
117 ifr.ifr_data = (caddr_t)&config;
118
119 if (ioctl(sock, (argc == 2) ? SIOCGHWTSTAMP : SIOCSHWTSTAMP, &ifr)) {
120 perror("ioctl");
121 return 1;
122 }
123
124 printf("flags = %#x\n", config.flags);
125 name = lookup_name(tx_types, N_TX_TYPES, config.tx_type);
126 if (name)
127 printf("tx_type = %s\n", name);
128 else
129 printf("tx_type = %d\n", config.tx_type);
130 name = lookup_name(rx_filters, N_RX_FILTERS, config.rx_filter);
131 if (name)
132 printf("rx_filter = %s\n", name);
133 else
134 printf("rx_filter = %d\n", config.rx_filter);
135
136 return 0;
137 }
138