tools: Add simple utility for interacting with mac80221_hwsim
This commit is contained in:
Marcel Holtmann
parent
9694998f28
commit
2d75ab55e7
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@ -21,6 +21,7 @@ ell
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src/iwd
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client/iwctl
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monitor/iwmon
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tools/hwsim
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unit/test-pbkdf2-sha1
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unit/test-prf-sha1
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unit/*.log
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@ -53,7 +53,9 @@ monitor_iwmon_SOURCES = monitor/main.c linux/nl80211.h \
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monitor/pcap.h monitor/pcap.c
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monitor_iwmon_LDADD = ell/libell-internal.la
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noinst_PROGRAMS =
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noinst_PROGRAMS = tools/hwsim
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tools_hwsim_LDADD = ell/libell-internal.la
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unit_tests = unit/test-pbkdf2-sha1 unit/test-prf-sha1 unit/test-ie
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@ -0,0 +1,265 @@
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/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2013-2014 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include <ell/ell.h>
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enum {
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HWSIM_CMD_UNSPEC,
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HWSIM_CMD_REGISTER,
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HWSIM_CMD_FRAME,
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HWSIM_CMD_TX_INFO_FRAME,
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HWSIM_CMD_CREATE_RADIO,
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HWSIM_CMD_DESTROY_RADIO,
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__HWSIM_CMD_MAX,
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};
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#define HWSIM_CMD_MAX (_HWSIM_CMD_MAX - 1)
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enum {
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HWSIM_ATTR_UNSPEC,
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HWSIM_ATTR_ADDR_RECEIVER,
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HWSIM_ATTR_ADDR_TRANSMITTER,
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HWSIM_ATTR_FRAME,
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HWSIM_ATTR_FLAGS,
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HWSIM_ATTR_RX_RATE,
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HWSIM_ATTR_SIGNAL,
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HWSIM_ATTR_TX_INFO,
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HWSIM_ATTR_COOKIE,
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HWSIM_ATTR_CHANNELS,
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HWSIM_ATTR_RADIO_ID,
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HWSIM_ATTR_REG_HINT_ALPHA2,
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HWSIM_ATTR_REG_CUSTOM_REG,
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HWSIM_ATTR_REG_STRICT_REG,
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HWSIM_ATTR_SUPPORT_P2P_DEVICE,
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HWSIM_ATTR_USE_CHANCTX,
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__HWSIM_ATTR_MAX,
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};
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#define HWSIM_ATTR_MAX (__HWSIM_ATTR_MAX - 1)
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static struct l_genl_family *hwsim;
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static bool create_action = false;
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static const char *destroy_action = NULL;
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static void do_debug(const char *str, void *user_data)
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{
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const char *prefix = user_data;
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l_info("%s%s", prefix, str);
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}
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static void create_callback(struct l_genl_msg *msg, void *user_data)
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{
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struct l_genl_attr attr;
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uint16_t type, len;
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const void *data;
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uint32_t radio_id = 0;
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if (!l_genl_attr_init(&attr, msg)) {
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l_warn("Failed to initialize create return attributes");
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goto done;
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}
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while (l_genl_attr_next(&attr, &type, &len, &data)) {
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switch (type) {
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case HWSIM_ATTR_RADIO_ID:
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if (len != sizeof(uint32_t)) {
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l_warn("Invalid radio id attribute");
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return;
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}
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radio_id = *((uint32_t *) data);
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break;
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}
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}
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l_info("Created new radio with id %u", radio_id);
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done:
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l_main_quit();
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}
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static void destroy_callback(struct l_genl_msg *msg, void *user_data)
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{
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struct l_genl_attr attr;
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uint16_t type, len;
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const void *data;
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if (!l_genl_attr_init(&attr, msg)) {
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l_warn("Failed to initialize destroy return attributes");
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goto done;
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}
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while (l_genl_attr_next(&attr, &type, &len, &data)) {
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}
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l_info("Destroyed radio");
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done:
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l_main_quit();
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}
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static void hwsim_ready(void *user_data)
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{
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struct l_genl_msg *msg;
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if (create_action) {
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msg = l_genl_msg_new(HWSIM_CMD_CREATE_RADIO);
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l_genl_family_send(hwsim, msg, create_callback, NULL, NULL);
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l_genl_msg_unref(msg);
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return;
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} else if (destroy_action) {
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uint32_t id = atoi(destroy_action);
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msg = l_genl_msg_new_sized(HWSIM_CMD_DESTROY_RADIO, 8);
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l_genl_msg_append_attr(msg, HWSIM_ATTR_RADIO_ID, 4, &id);
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l_genl_family_send(hwsim, msg, destroy_callback, NULL, NULL);
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l_genl_msg_unref(msg);
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} else
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l_main_quit();
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}
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static void signal_handler(struct l_signal *signal, uint32_t signo,
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void *user_data)
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{
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switch (signo) {
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case SIGINT:
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case SIGTERM:
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l_main_quit();
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break;
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}
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}
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static void usage(void)
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{
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printf("hwsim - Wireless simulator\n"
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"Usage:\n");
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printf("\thwsim [options]\n");
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printf("Options:\n"
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"\t-C, --create Create new simulated radio\n"
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"\t-D, --destroy <id> Destroy existing radio\n"
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"\t-h, --help Show help options\n");
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}
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static const struct option main_options[] = {
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{ "create", no_argument, NULL, 'C' },
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{ "destroy", required_argument, NULL, 'D' },
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{ "version", no_argument, NULL, 'v' },
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{ "help", no_argument, NULL, 'h' },
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{ }
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};
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int main(int argc, char *argv[])
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{
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struct l_signal *signal;
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struct l_genl *genl;
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sigset_t mask;
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int exit_status;
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for (;;) {
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int opt;
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opt = getopt_long(argc, argv, "CD:vh", main_options, NULL);
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if (opt < 0)
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break;
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switch (opt) {
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case 'C':
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create_action = true;
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break;
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case 'D':
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destroy_action = optarg;
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break;
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case 'v':
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printf("%s\n", VERSION);
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return EXIT_SUCCESS;
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case 'h':
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usage();
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return EXIT_SUCCESS;
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default:
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return EXIT_FAILURE;
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}
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}
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if (argc - optind > 0) {
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fprintf(stderr, "Invalid command line parameters\n");
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return EXIT_FAILURE;
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}
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if (create_action && destroy_action) {
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fprintf(stderr, "Only one action can be specified\n");
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return EXIT_FAILURE;
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}
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if (!create_action && !destroy_action) {
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fprintf(stderr, "No action has been specified\n");
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return EXIT_FAILURE;
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}
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sigemptyset(&mask);
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sigaddset(&mask, SIGINT);
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sigaddset(&mask, SIGTERM);
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signal = l_signal_create(&mask, signal_handler, NULL, NULL);
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l_log_set_stderr();
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printf("Wireless simulator ver %s\n", VERSION);
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genl = l_genl_new_default();
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if (!genl) {
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fprintf(stderr, "Failed to initialize generic netlink\n");
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exit_status = EXIT_FAILURE;
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goto done;
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}
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if (getenv("HWSIM_DEBUG"))
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l_genl_set_debug(genl, do_debug, "[GENL] ", NULL);
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hwsim = l_genl_family_new(genl, "MAC80211_HWSIM");
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if (!hwsim) {
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fprintf(stderr, "Failed to create generic netlink family\n");
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l_genl_unref(genl);
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exit_status = EXIT_FAILURE;
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goto done;
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}
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l_genl_family_set_watches(hwsim, hwsim_ready, NULL, NULL, NULL);
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l_main_run();
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l_genl_family_unref(hwsim);
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l_genl_unref(genl);
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exit_status = EXIT_SUCCESS;
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done:
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l_signal_remove(signal);
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return exit_status;
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}
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