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wireless/wext: Add drivers_wext from the WPA supplicant; Integrate into NSH

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This commit is contained in:
Simon Piriou 2017-05-02 09:43:48 -06:00 committed by Gregory Nutt
parent a5c439777d
commit 33027bd66e
9 changed files with 661 additions and 19 deletions
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2
include/wireless/wapi.h
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@ -1,7 +1,7 @@
/**************************************************************************** /****************************************************************************
* apps/include/wireless/wapi.h * apps/include/wireless/wapi.h
* *
* Copyright (C) 2011, 2017Gregory Nutt. All rights reserved. * Copyright (C) 2011, 2017 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org> * Author: Gregory Nutt <gnutt@nuttx.org>
* *
* Adapted for Nuttx from WAPI: * Adapted for Nuttx from WAPI:

104
include/wireless/wext.h Normal file
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@ -0,0 +1,104 @@
/****************************************************************************
* apps/include/wireless/wapi.h
* WPA Supplicant - wext exported functions
*
* Copyright (C) 2017 Gregory Nutt. All rights reserved.
* Author: Simon Piriou <spiriou31@gmail.com>
* Gregory Nutt <gnutt@nuttx.org>
*
* Adapted to NuttX from driver_ext.h
*
* Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __APPS_INCLUDE_WIRELESS_WEXT_H
#define __APPS_INCLUDE_WIRELESS_WEXT_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
#ifdef CONFIG_NET_UDP
# define NETLIB_SOCK_IOCTL SOCK_DGRAM
#else
# define NETLIB_SOCK_IOCTL SOCK_STREAM
#endif
#define SSID_MAX_LEN 32
#define PF_INETX PF_INET
/************************************************************************************
* Public Types
************************************************************************************/
enum wpa_alg
{
WPA_ALG_NONE,
WPA_ALG_WEP,
WPA_ALG_TKIP,
WPA_ALG_CCMP,
WPA_ALG_IGTK,
WPA_ALG_PMK,
WPA_ALG_GCMP,
WPA_ALG_SMS4,
WPA_ALG_KRK,
WPA_ALG_GCMP_256,
WPA_ALG_CCMP_256,
WPA_ALG_BIP_GMAC_128,
WPA_ALG_BIP_GMAC_256,
WPA_ALG_BIP_CMAC_256
};
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
int wpa_driver_wext_set_ssid(int sockfd, FAR char *ifname,
FAR const uint8_t *ssid, size_t ssid_len);
int wpa_driver_wext_set_mode(int sockfd, FAR char *ifname, int mode);
int wpa_driver_wext_set_key_ext(int sockfd, FAR char *ifname, enum wpa_alg alg,
FAR const uint8_t *key, size_t key_len);
int wpa_driver_wext_associate(void);
int wpa_driver_wext_set_auth_param(int sockfd, FAR char *ifname,
int idx, uint32_t value);
#endif /* __APPS_INCLUDE_WIRELESS_WEXT_H */

3
netutils/dhcpc/Kconfig
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@ -14,7 +14,8 @@ if NETUTILS_DHCPC
config NETUTILS_DHCPC_DEVNAME config NETUTILS_DHCPC_DEVNAME
string "DHCP device name" string "DHCP device name"
default "eth0" default "eth0" if !DRIVERS_IEEE80211
default "wlan0" if DRIVERS_IEEE80211
depends on NET_UDP && NET_BROADCAST && NET_IPv4 depends on NET_UDP && NET_BROADCAST && NET_IPv4
---help--- ---help---
Specify the Ethernet or IEEE 802.15.4 device to use. Specify the Ethernet or IEEE 802.15.4 device to use.

46
nshlib/nsh_netinit.c
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@ -80,6 +80,10 @@
# include "netutils/ntpclient.h" # include "netutils/ntpclient.h"
#endif #endif
#ifdef CONFIG_WIRELESS_WEXT
# include "wireless/wext.h"
#endif
#include "nsh.h" #include "nsh.h"
#ifdef CONFIG_NSH_NETINIT #ifdef CONFIG_NSH_NETINIT
@ -363,6 +367,14 @@ static void nsh_netinit_configure(void)
netlib_getmacaddr(NET_DEVNAME, mac); netlib_getmacaddr(NET_DEVNAME, mac);
#ifdef CONFIG_WIRELESS_WEXT
/* Associate the wlan */
sleep(2);
wpa_driver_wext_associate();
sleep(2);
#endif
/* Set up the DHCPC modules */ /* Set up the DHCPC modules */
handle = dhcpc_open(&mac, IFHWADDRLEN); handle = dhcpc_open(&mac, IFHWADDRLEN);
@ -371,28 +383,28 @@ static void nsh_netinit_configure(void)
* example. The address should be renewed in ds.lease_time/2 seconds. * example. The address should be renewed in ds.lease_time/2 seconds.
*/ */
if (handle) if (handle != NULL)
{ {
struct dhcpc_state ds; struct dhcpc_state ds;
(void)dhcpc_request(handle, &ds); (void)dhcpc_request(handle, &ds);
netlib_set_ipv4addr(NET_DEVNAME, &ds.ipaddr); netlib_set_ipv4addr(NET_DEVNAME, &ds.ipaddr);
if (ds.netmask.s_addr != 0) if (ds.netmask.s_addr != 0)
{ {
netlib_set_ipv4netmask(NET_DEVNAME, &ds.netmask); netlib_set_ipv4netmask(NET_DEVNAME, &ds.netmask);
} }
if (ds.default_router.s_addr != 0) if (ds.default_router.s_addr != 0)
{ {
netlib_set_dripv4addr(NET_DEVNAME, &ds.default_router); netlib_set_dripv4addr(NET_DEVNAME, &ds.default_router);
} }
if (ds.dnsaddr.s_addr != 0) if (ds.dnsaddr.s_addr != 0)
{ {
netlib_set_ipv4dnsaddr(&ds.dnsaddr); netlib_set_ipv4dnsaddr(&ds.dnsaddr);
} }
dhcpc_close(handle); dhcpc_close(handle);
} }
#endif #endif

6
wireless/wext/.gitignore vendored Normal file
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@ -0,0 +1,6 @@
/.built
/.depend
/Make.dep
/*.src
/*.obj
/*.lst

16
wireless/wext/Kconfig Normal file
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@ -0,0 +1,16 @@
#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
menuconfig WIRELESS_WEXT
bool "Driver WEXT"
default n
depends on NET && DRIVERS_WIRELESS
---help---
The driver_wext logic from the WPA suplicant written originally
by Jouni Malinen
if WIRELESS_WEXT
endif

40
wireless/wext/Make.defs Normal file
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@ -0,0 +1,40 @@
############################################################################
# apps/wireless/wext/Make.defs
# Adds selected applications to apps/ build
#
# Copyright (C) 2017 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################
ifeq ($(CONFIG_WIRELESS_WEXT),y)
CONFIGURED_APPS += wireless/wext
endif

104
wireless/wext/Makefile Normal file
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@ -0,0 +1,104 @@
############################################################################
# apps/wireless/wext/Makefile
#
# Copyright (C) 2017 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################
# TODO, this makefile should run make under the app dirs, instead of
# sourcing the Make.defs!
-include $(TOPDIR)/.config
-include $(TOPDIR)/Make.defs
include $(APPDIR)/Make.defs
ASRCS =
CSRCS = wext.c
MAINSRC =
VPATH = .
DEPPATH = --dep-path .
AOBJS = $(ASRCS:.S=$(OBJEXT))
COBJS = $(CSRCS:.c=$(OBJEXT))
MAINOBJ = $(MAINSRC:.c=$(OBJEXT))
SRCS = $(ASRCS) $(CSRCS) $(MAINSRC)
OBJS = $(AOBJS) $(COBJS)
ifeq ($(CONFIG_WINDOWS_NATIVE),y)
BIN = ..\..\libapps$(LIBEXT)
else
ifeq ($(WINTOOL),y)
BIN = ..\\..\\libapps$(LIBEXT)
else
BIN = ../../libapps$(LIBEXT)
endif
endif
# Common build
all: .built
.PHONY: context depend clean distclean
$(AOBJS): %$(OBJEXT): %.S
$(call ASSEMBLE, $<, $@)
$(COBJS) $(MAINOBJ): %$(OBJEXT): %.c
$(call COMPILE, $<, $@)
.built: $(OBJS)
$(call ARCHIVE, $(BIN), $(OBJS))
$(Q) touch .built
install:
context:
# Create dependencies
.depend: Makefile $(SRCS)
$(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
$(Q) touch $@
depend: .depend
clean:
$(call DELFILE, .built)
$(call CLEAN)
distclean: clean
$(call DELFILE, Make.dep)
$(call DELFILE, .depend)
-include Make.dep
.PHONY: preconfig
preconfig:

359
wireless/wext/wext.c Normal file
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@ -0,0 +1,359 @@
/************************************************************************************
* apps/include/graphics/wext.c
* Driver interaction with generic Wireless Extensions
*
* Copyright (C) 2017 Gregory Nutt. All rights reserved.
* Author: Simon Piriou <spiriou31@gmail.com>
* Gregory Nutt <gnutt@nuttx.org>
*
* Adapted to NuttX from driver_ext.c
*
* Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
/* This file implements a driver interface for the Linux Wireless Extensions.
* When used with WE-18 or newer, this interface can be used as-is with number
* of drivers. In addition to this, some of the common functions in this file
* can be used by other driver interface implementations that use generic WE
* ioctls, but require private ioctls for some of the functionality.
*/
/************************************************************************************
* Included Files
************************************************************************************/
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <debug.h>
#include "wireless/wext.h"
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: wpa_driver_wext_set_auth_param
*
* Description:
*
* Input Parameters:
*
* Returned Value:
*
************************************************************************************/
int wpa_driver_wext_set_auth_param(int sockfd, FAR char *ifname, int idx,
uint32_t value)
{
struct iwreq iwr;
int errcode;
int ret = 0;
memset(&iwr, 0, sizeof(iwr));
strncpy(iwr.ifr_name, ifname, IFNAMSIZ);
iwr.u.param.flags = idx & IW_AUTH_INDEX;
iwr.u.param.value = value;
if (ioctl(sockfd, SIOCSIWAUTH, (unsigned long)&iwr) < 0)
{
errcode = errno;
if (errcode != EOPNOTSUPP)
{
nerr("ERROR: SIOCSIWAUTH(param %d value 0x%x) failed: %d)",
idx, value, errcode);
}
ret = errcode == EOPNOTSUPP ? -2 : -1;
}
return ret;
}
/************************************************************************************
* Name: wpa_driver_wext_set_ssid
*
* Description:
* Set SSID, SIOCSIWESSID
*
* Input Parameters:
* sockfd - Opened network socket
* ifname - Interface name
* ssid - SSID
* ssid_len - Length of SSID (0..32)
*
* Returned Value:
* 0 on success, -1 on failure
*
************************************************************************************/
int wpa_driver_wext_set_ssid(int sockfd, FAR char *ifname, FAR const uint8_t *ssid,
size_t ssid_len)
{
struct iwreq iwr;
int ret = 0;
char buf[33];
if (ssid_len > SSID_MAX_LEN)
{
return -1;
}
memset(&iwr, 0, sizeof(iwr));
strncpy(iwr.ifr_name, ifname, IFNAMSIZ);
/* flags: 1 = ESSID is active, 0 = not (promiscuous) */
iwr.u.essid.flags = (ssid_len != 0);
memset(buf, 0, sizeof(buf));
memcpy(buf, ssid, ssid_len);
iwr.u.essid.pointer = (caddr_t) buf;
iwr.u.essid.length = ssid_len;
if (ioctl(sockfd, SIOCSIWESSID, (unsigned long)&iwr) < 0)
{
nerr("ERROR: ioctl[SIOCSIWESSID]: %d", errno);
ret = -1;
}
return ret;
}
/************************************************************************************
* Name: wpa_driver_wext_set_key_ext
*
* Description:
*
* Input Parameters:
* sockfd - Opened network socket
* ifname - Interface name
*
* Returned Value:
*
************************************************************************************/
int wpa_driver_wext_set_key_ext(int sockfd, FAR char *ifname, enum wpa_alg alg,
FAR const uint8_t *key, size_t key_len)
{
struct iwreq iwr;
int ret = 0;
struct iw_encode_ext *ext;
ext = malloc(sizeof(*ext) + key_len);
if (ext == NULL)
{
return -1;
}
memset(&iwr, 0, sizeof(iwr));
strncpy(iwr.ifr_name, ifname, IFNAMSIZ);
iwr.u.encoding.pointer = (caddr_t) ext;
iwr.u.encoding.length = sizeof(*ext) + key_len;
if (key && key_len)
{
memcpy(ext + 1, key, key_len);
ext->key_len = key_len;
}
switch (alg)
{
case WPA_ALG_NONE:
ext->alg = IW_ENCODE_ALG_NONE;
break;
case WPA_ALG_WEP:
ext->alg = IW_ENCODE_ALG_WEP;
break;
case WPA_ALG_TKIP:
ext->alg = IW_ENCODE_ALG_TKIP;
break;
case WPA_ALG_CCMP:
ext->alg = IW_ENCODE_ALG_CCMP;
break;
default:
nerr("ERROR: Unknown algorithm %d", alg);
free(ext);
return -1;
}
if (ioctl(sockfd, SIOCSIWENCODEEXT, (unsigned long)&iwr) < 0)
{
ret = errno == EOPNOTSUPP ? -2 : -1;
nerr("ERROR: ioctl[SIOCSIWENCODEEXT]: %d", errno);
}
free(ext);
return ret;
}
/************************************************************************************
* Name: wpa_driver_wext_associate
*
* Description:
*
* Input Parameters:
*
* Returned Value:
*
************************************************************************************/
int wpa_driver_wext_associate(void)
{
int ret;
int sockfd;
struct iwreq req;
int sta_mode = IW_MODE_INFRA;
// IW_AUTH_WPA_VERSION_DISABLED
// IW_AUTH_WPA_VERSION_WPA
int auth_wpa = IW_AUTH_WPA_VERSION_WPA2;
// IW_AUTH_CIPHER_NONE
// IW_AUTH_CIPHER_WEP40
// IW_AUTH_CIPHER_TKIP
// IW_AUTH_CIPHER_WEP104
int cipher_mode = IW_AUTH_CIPHER_CCMP;
enum wpa_alg alg = WPA_ALG_CCMP;
char ifname[] = "wlan0";
const uint8_t ssid[] = "myApSSID";
const uint8_t passphrase[] = "mySSIDpassphrase";
ninfo("Entry\n");
/* Get a socket (only so that we get access to the INET subsystem) */
sockfd = socket(PF_INETX, NETLIB_SOCK_IOCTL, 0);
if (sockfd < 0)
{
return sockfd;
}
/* Put the driver name into the request */
strncpy(req.ifr_name, ifname, IFNAMSIZ);
if (wpa_driver_wext_set_mode(sockfd, ifname, sta_mode) < 0)
{
nerr("Fail set sta mode\n");
ret = -1;
goto close_socket;
}
if (wpa_driver_wext_set_auth_param(sockfd, ifname, IW_AUTH_WPA_VERSION,
auth_wpa) < 0)
{
nerr("Fail set wpa version\n");
ret = -1;
goto close_socket;
}
if (wpa_driver_wext_set_auth_param(sockfd, ifname,
IW_AUTH_CIPHER_PAIRWISE, cipher_mode) < 0)
{
nerr("Fail set cipher mode\n");
ret = -1;
goto close_socket;
}
if (wpa_driver_wext_set_key_ext(sockfd, ifname, alg, passphrase,
sizeof(passphrase)-1))
{
nerr("Fail set key\n");
ret = -1;
goto close_socket;
}
if (wpa_driver_wext_set_ssid(sockfd, ifname, ssid, sizeof(ssid)-1) < 0)
{
nerr("Fail set ssid\n");
ret = -1;
goto close_socket;
}
close_socket:
close(sockfd);
return ret;
}
/************************************************************************************
* Name: wpa_driver_wext_set_mode
*
* Description:
* Set wireless mode (infra/adhoc), SIOCSIWMODE
*
* Input Parameters:
* sockfd - Opened network socket
* ifname - Interface name
* mode - 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS
*
* Returned Value:
* 0 on success, -1 on failure
*
************************************************************************************/
int wpa_driver_wext_set_mode(int sockfd, FAR char *ifname, int mode)
{
struct iwreq iwr;
int ret = -1;
memset(&iwr, 0, sizeof(iwr));
strncpy(iwr.ifr_name, ifname, IFNAMSIZ);
iwr.u.mode = mode;
if (ioctl(sockfd, SIOCSIWMODE, (unsigned long)&iwr) == 0)
{
ret = 0;
goto done;
}
nerr("ERROR: ioctl[SIOCSIWMODE]: %d", errno);
done:
return ret;
}