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