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Based on kernel version 3.16. Page generated on 2014-08-06 21:40 EST.

1	/* Test program for SIOC{G,S}HWTSTAMP
2	 * Copyright 2013 Solarflare Communications
3	 * Author: Ben Hutchings
4	 */
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	
18	static int
19	lookup_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	
30	static const char *
31	lookup_name(const char **names, int size, int value)
32	{
33		return (value >= 0 && value < size) ? names[value] : NULL;
34	}
35	
36	static 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	
45	static 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	
54	static 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	
75	static 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	
85	int 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	}
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