cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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hwtstamp_config.c (3125B)

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