Based on kernel version 4.8. Page generated on 2016-10-06 23:18 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 }