wifi: preliminary nl80211 patch

Add nl80211 support to wifi utils.
This commit is contained in:
Johannes Berg
2011-10-05 13:41:49 +02:00
committed by Dan Williams
parent 1189b248e1
commit ba8527ca58
6 changed files with 750 additions and 2 deletions

View File

@@ -124,6 +124,8 @@ NetworkManager_SOURCES = \
wifi-utils-private.h \ wifi-utils-private.h \
wifi-utils-wext.c \ wifi-utils-wext.c \
wifi-utils-wext.h \ wifi-utils-wext.h \
wifi-utils-nl80211.c \
wifi-utils-nl80211.h \
nm-device-wifi.c \ nm-device-wifi.c \
nm-device-wifi.h \ nm-device-wifi.h \
nm-device-olpc-mesh.c \ nm-device-olpc-mesh.c \

View File

@@ -172,6 +172,18 @@ __nl_cache_include (struct nl_cache *cache, struct nl_object *obj, change_func_t
} }
#define nl_cache_include __nl_cache_include #define nl_cache_include __nl_cache_include
#include <netlink/genl/ctrl.h>
static inline int __genl_ctrl_alloc_cache(struct nl_sock *h, struct nl_cache **cache)
{
struct nl_cache *tmp = genl_ctrl_alloc_cache(h);
if (!tmp)
return -ENOMEM;
*cache = tmp;
return 0;
}
#define genl_ctrl_alloc_cache __genl_ctrl_alloc_cache
#define NLE_SUCCESS 0 #define NLE_SUCCESS 0
#define NLE_FAILURE 1 #define NLE_FAILURE 1
#define NLE_INTR 2 #define NLE_INTR 2

View File

@@ -347,6 +347,12 @@ is_wireless (GUdevDevice *device)
char phy80211_path[255]; char phy80211_path[255];
struct stat s; struct stat s;
const char *path; const char *path;
const char *tmp;
/* Check devtype, newer kernels (2.6.32+) have this */
tmp = g_udev_device_get_property (device, "DEVTYPE");
if (g_strcmp0 (tmp, "wlan") == 0)
return TRUE;
/* Check for nl80211 sysfs paths */ /* Check for nl80211 sysfs paths */
path = g_udev_device_get_sysfs_path (device); path = g_udev_device_get_sysfs_path (device);
@@ -354,7 +360,7 @@ is_wireless (GUdevDevice *device)
if ((stat (phy80211_path, &s) == 0 && (s.st_mode & S_IFDIR))) if ((stat (phy80211_path, &s) == 0 && (s.st_mode & S_IFDIR)))
return TRUE; return TRUE;
/* Otherwise hit up WEXT/nl80211 directly */ /* Otherwise hit up WEXT directly */
return wifi_utils_is_wifi (g_udev_device_get_name (device)); return wifi_utils_is_wifi (g_udev_device_get_name (device));
} }

695
src/wifi-utils-nl80211.c Normal file
View File

@@ -0,0 +1,695 @@
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager -- Network link manager
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright (C) 2005 - 2011 Red Hat, Inc.
* Copyright (C) 2006 - 2008 Novell, Inc.
* Copyright (C) 2011 Intel Corporation. All rights reserved.
*/
#include <config.h>
#include <errno.h>
#include <string.h>
#include <sys/ioctl.h>
#include <net/ethernet.h>
#include <unistd.h>
#include <math.h>
#include <glib.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include <linux/nl80211.h>
#include "wifi-utils-private.h"
#include "wifi-utils-nl80211.h"
#include "nm-logging.h"
#include "nm-utils.h"
#include "nm-netlink-compat.h"
typedef struct {
WifiData parent;
struct nl_sock *nl_sock;
struct nl_cache *nl_cache;
struct genl_family *nl_family;
struct nl_cb *nl_cb;
guint32 *freqs;
int num_freqs;
} WifiDataNl80211;
static int ack_handler (struct nl_msg *msg, void *arg)
{
int *err = arg;
*err = 0;
return NL_STOP;
}
static int finish_handler (struct nl_msg *msg, void *arg)
{
int *ret = arg;
*ret = 0;
return NL_SKIP;
}
static int error_handler (struct sockaddr_nl *nla, struct nlmsgerr *err,
void *arg)
{
int *ret = arg;
*ret = err->error;
return NL_SKIP;
}
static struct nl_msg *nl80211_alloc_msg (WifiDataNl80211 *nl80211,
guint32 cmd, guint32 flags)
{
struct nl_msg *msg = nlmsg_alloc ();
if (!msg)
return NULL;
genlmsg_put (msg, 0, 0, genl_family_get_id (nl80211->nl_family), 0,
flags, cmd, 0);
NLA_PUT_U32 (msg, NL80211_ATTR_IFINDEX, nl80211->parent.ifindex);
return msg;
nla_put_failure:
nlmsg_free (msg);
return NULL;
}
static int nl80211_send_and_recv (WifiDataNl80211 *nl80211,
struct nl_msg *msg,
int (*valid_handler)(struct nl_msg *, void *),
void *valid_data)
{
struct nl_cb *cb;
int err;
if (msg == NULL)
return -ENOMEM;
g_return_val_if_fail (valid_handler != NULL, -EINVAL);
cb = nl_cb_clone (nl80211->nl_cb);
if (!cb) {
err = -ENOMEM;
goto out;
}
err = nl_send_auto_complete (nl80211->nl_sock, msg);
if (err < 0)
goto out;
err = 1;
nl_cb_err (cb, NL_CB_CUSTOM, error_handler, &err);
nl_cb_set (cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
nl_cb_set (cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
nl_cb_set (cb, NL_CB_VALID, NL_CB_CUSTOM, valid_handler, valid_data);
while (err > 0)
nl_recvmsgs (nl80211->nl_sock, cb);
out:
nl_cb_put (cb);
nlmsg_free (msg);
return err;
}
static void
wifi_nl80211_deinit (WifiData *parent)
{
WifiDataNl80211 *nl80211 = (WifiDataNl80211 *) parent;
if (nl80211->nl_family)
genl_family_put (nl80211->nl_family);
if (nl80211->nl_cache)
nl_cache_free (nl80211->nl_cache);
if (nl80211->nl_sock)
nl_socket_free (nl80211->nl_sock);
if (nl80211->nl_cb)
nl_cb_put (nl80211->nl_cb);
}
struct nl80211_iface_info {
NM80211Mode mode;
};
static int nl80211_iface_info_handler (struct nl_msg *msg, void *arg)
{
struct nl80211_iface_info *info = arg;
struct genlmsghdr *gnlh = nlmsg_data (nlmsg_hdr (msg));
struct nlattr *tb[NL80211_ATTR_MAX + 1];
if (nla_parse (tb, NL80211_ATTR_MAX, genlmsg_attrdata (gnlh, 0),
genlmsg_attrlen (gnlh, 0), NULL) < 0)
return NL_SKIP;
if (!tb[NL80211_ATTR_IFTYPE])
return NL_SKIP;
switch (nla_get_u32 (tb[NL80211_ATTR_IFTYPE])) {
case NL80211_IFTYPE_ADHOC:
info->mode = NM_802_11_MODE_ADHOC;
break;
case NL80211_IFTYPE_STATION:
info->mode = NM_802_11_MODE_INFRA;
break;
}
return NL_SKIP;
}
static NM80211Mode
wifi_nl80211_get_mode (WifiData *data)
{
WifiDataNl80211 *nl80211 = (WifiDataNl80211 *) data;
struct nl80211_iface_info iface_info = {
.mode = NM_802_11_MODE_UNKNOWN,
};
struct nl_msg *msg;
msg = nl80211_alloc_msg (nl80211, NL80211_CMD_GET_INTERFACE, 0);
if (nl80211_send_and_recv (nl80211, msg, nl80211_iface_info_handler,
&iface_info) < 0)
return NM_802_11_MODE_UNKNOWN;
return iface_info.mode;
return NM_802_11_MODE_INFRA;
return NM_802_11_MODE_ADHOC;
return NM_802_11_MODE_UNKNOWN;
}
static gboolean
wifi_nl80211_set_mode (WifiData *data, const NM80211Mode mode)
{
/*
* Used only to set mode for scanning as some old cards
* don't properly scan in IBSS mode, nl80211 cards are
* expected to scan properly so ignore this.
*/
return TRUE;
}
static guint32 nl80211_mbm_to_percent (gint32 mbm)
{
#define NOISE_FLOOR_MBM -9000
#define SIGNAL_MAX_MBM -2000
mbm = CLAMP(mbm, NOISE_FLOOR_MBM, SIGNAL_MAX_MBM);
return 100 - 70 * ((SIGNAL_MAX_MBM - mbm) /
(SIGNAL_MAX_MBM - NOISE_FLOOR_MBM));
}
struct nl80211_bss_info {
guint32 freq;
guint8 bssid[ETH_ALEN];
guint8 ssid[32];
guint32 ssid_len;
guint32 beacon_signal;
gboolean valid;
};
#define WLAN_EID_SSID 0
static void find_ssid (guint8 *ies, guint32 ies_len,
guint8 **ssid, guint32 *ssid_len)
{
*ssid = NULL;
*ssid_len = 0;
while (ies_len > 2 && ies[0] != WLAN_EID_SSID) {
ies_len -= ies[1] + 2;
ies += ies[1] + 2;
}
if (ies_len < 2)
return;
if (ies_len < 2 + ies[1])
return;
*ssid_len = ies[1];
*ssid = ies + 2;
}
static int nl80211_bss_dump_handler (struct nl_msg *msg, void *arg)
{
struct nl80211_bss_info *info = arg;
struct genlmsghdr *gnlh = nlmsg_data (nlmsg_hdr (msg));
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct nlattr *bss[NL80211_BSS_MAX + 1];
static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
[NL80211_BSS_TSF] = { .type = NLA_U64 },
[NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
[NL80211_BSS_BSSID] = { },
[NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
[NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
[NL80211_BSS_INFORMATION_ELEMENTS] = { },
[NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
[NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
[NL80211_BSS_STATUS] = { .type = NLA_U32 },
[NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
[NL80211_BSS_BEACON_IES] = { },
};
guint32 status;
if (nla_parse (tb, NL80211_ATTR_MAX, genlmsg_attrdata (gnlh, 0),
genlmsg_attrlen (gnlh, 0), NULL) < 0)
return NL_SKIP;
if (tb[NL80211_ATTR_BSS] == NULL)
return NL_SKIP;
if (nla_parse_nested (bss, NL80211_BSS_MAX,
tb[NL80211_ATTR_BSS],
bss_policy))
return NL_SKIP;
if (bss[NL80211_BSS_STATUS] == NULL)
return NL_SKIP;
status = nla_get_u32 (bss[NL80211_BSS_STATUS]);
if (status != NL80211_BSS_STATUS_ASSOCIATED &&
status != NL80211_BSS_STATUS_IBSS_JOINED)
return NL_SKIP;
if (bss[NL80211_BSS_BSSID] == NULL)
return NL_SKIP;
memcpy(info->bssid, nla_data (bss[NL80211_BSS_BSSID]), ETH_ALEN);
if (bss[NL80211_BSS_FREQUENCY])
info->freq = nla_get_u32 (bss[NL80211_BSS_FREQUENCY]);
if (bss[NL80211_BSS_SIGNAL_UNSPEC])
info->beacon_signal =
nla_get_u8 (bss[NL80211_BSS_SIGNAL_UNSPEC]);
if (bss[NL80211_BSS_SIGNAL_MBM])
info->beacon_signal =
nl80211_mbm_to_percent (
nla_get_u32 (bss[NL80211_BSS_SIGNAL_MBM]));
if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
guint8 *ssid;
guint32 ssid_len;
find_ssid(nla_data (bss[NL80211_BSS_INFORMATION_ELEMENTS]),
nla_len (bss[NL80211_BSS_INFORMATION_ELEMENTS]),
&ssid, &ssid_len);
if (ssid && ssid_len && ssid_len <= sizeof(info->ssid)) {
memcpy (info->ssid, ssid, ssid_len);
info->ssid_len = ssid_len;
}
}
info->valid = TRUE;
return NL_SKIP;
}
static void nl80211_get_bss_info (WifiDataNl80211 *nl80211,
struct nl80211_bss_info *bss_info)
{
struct nl_msg *msg;
memset(bss_info, 0, sizeof(*bss_info));
msg = nl80211_alloc_msg (nl80211, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
nl80211_send_and_recv (nl80211, msg, nl80211_bss_dump_handler,
bss_info);
}
static guint32
wifi_nl80211_get_freq (WifiData *data)
{
WifiDataNl80211 *nl80211 = (WifiDataNl80211 *) data;
struct nl80211_bss_info bss_info;
nl80211_get_bss_info (nl80211, &bss_info);
return bss_info.freq;
}
static guint32
wifi_nl80211_find_freq (WifiData *data, const guint32 *freqs)
{
WifiDataNl80211 *nl80211 = (WifiDataNl80211 *) data;
int i;
for (i = 0; i < nl80211->num_freqs; i++) {
while (*freqs) {
if (nl80211->freqs[i] == *freqs)
return *freqs;
freqs++;
}
}
return 0;
}
static GByteArray *
wifi_nl80211_get_ssid (WifiData *data)
{
WifiDataNl80211 *nl80211 = (WifiDataNl80211 *) data;
GByteArray *array = NULL;
struct nl80211_bss_info bss_info;
nl80211_get_bss_info (nl80211, &bss_info);
if (bss_info.valid) {
array = g_byte_array_sized_new (bss_info.ssid_len);
g_byte_array_append (array, (const guint8 *) bss_info.ssid,
bss_info.ssid_len);
}
return array;
}
static gboolean
wifi_nl80211_get_bssid (WifiData *data, struct ether_addr *out_bssid)
{
WifiDataNl80211 *nl80211 = (WifiDataNl80211 *) data;
struct nl80211_bss_info bss_info;
nl80211_get_bss_info (nl80211, &bss_info);
if (bss_info.valid)
memcpy(out_bssid, bss_info.bssid, ETH_ALEN);
return bss_info.valid;
}
struct nl80211_station_info {
guint32 txrate;
gboolean valid;
};
static int nl80211_station_handler (struct nl_msg *msg, void *arg)
{
struct nl80211_station_info *info = arg;
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data (nlmsg_hdr (msg));
struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
[NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
[NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
[NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
[NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
[NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
[NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
[NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
[NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
[NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
[NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
};
static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
[NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
[NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
[NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
[NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
};
if (nla_parse (tb, NL80211_ATTR_MAX, genlmsg_attrdata (gnlh, 0),
genlmsg_attrlen (gnlh, 0), NULL) < 0)
return NL_SKIP;
if (tb[NL80211_ATTR_STA_INFO] == NULL)
return NL_SKIP;
if (nla_parse_nested (sinfo, NL80211_STA_INFO_MAX,
tb[NL80211_ATTR_STA_INFO],
stats_policy))
return NL_SKIP;
if (sinfo[NL80211_STA_INFO_TX_BITRATE] == NULL)
return NL_SKIP;
if (nla_parse_nested (rinfo, NL80211_RATE_INFO_MAX,
sinfo[NL80211_STA_INFO_TX_BITRATE],
rate_policy))
return NL_SKIP;
if (rinfo[NL80211_RATE_INFO_BITRATE] == NULL)
return NL_SKIP;
info->txrate = nla_get_u16 (rinfo[NL80211_RATE_INFO_BITRATE]) / 10;
info->valid = TRUE;
return NL_SKIP;
}
static void nl80211_get_ap_info (WifiDataNl80211 *nl80211,
struct nl80211_station_info *sta_info)
{
struct nl_msg *msg;
struct nl80211_bss_info bss_info;
memset(sta_info, 0, sizeof(*sta_info));
nl80211_get_bss_info (nl80211, &bss_info);
if (!bss_info.valid)
return;
msg = nl80211_alloc_msg (nl80211, NL80211_CMD_GET_STATION, 0);
if (msg) {
NLA_PUT (msg, NL80211_ATTR_MAC, ETH_ALEN, bss_info.bssid);
nl80211_send_and_recv (nl80211, msg, nl80211_station_handler,
sta_info);
}
nla_put_failure:
nlmsg_free (msg);
return;
}
static guint32
wifi_nl80211_get_rate (WifiData *data)
{
WifiDataNl80211 *nl80211 = (WifiDataNl80211 *) data;
struct nl80211_station_info sta_info;
nl80211_get_ap_info (nl80211, &sta_info);
return sta_info.txrate;
}
static int
wifi_nl80211_get_qual (WifiData *data)
{
WifiDataNl80211 *nl80211 = (WifiDataNl80211 *) data;
struct nl80211_bss_info bss_info;
nl80211_get_bss_info (nl80211, &bss_info);
return bss_info.beacon_signal;
}
struct nl80211_device_info {
guint32 *freqs;
int num_freqs;
guint32 caps;
gboolean can_scan, can_scan_ssid;
gboolean success;
};
static int nl80211_wiphy_info_handler (struct nl_msg *msg, void *arg)
{
struct nlattr *tb[NL80211_ATTR_MAX + 1];
struct genlmsghdr *gnlh = nlmsg_data (nlmsg_hdr (msg));
struct nl80211_device_info *info = arg;
struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
struct nlattr *nl_band;
struct nlattr *nl_freq;
int rem_freq;
int rem_band;
int freq_idx;
static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
[NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
[NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
};
if (nla_parse (tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen (gnlh, 0), NULL) < 0)
return NL_SKIP;
if (tb[NL80211_ATTR_WIPHY_BANDS] == NULL)
return NL_SKIP;
if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) {
info->can_scan_ssid =
nla_get_u8 (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) > 0;
} else {
/* old kernel that only had mac80211, so assume it can */
info->can_scan_ssid = TRUE;
}
if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
struct nlattr *nl_cmd;
int i;
nla_for_each_nested (nl_cmd,
tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
guint32 cmd = nla_get_u32 (nl_cmd);
if (cmd == NL80211_CMD_TRIGGER_SCAN)
info->can_scan = TRUE;
}
}
info->num_freqs = 0;
nla_for_each_nested (nl_band, tb[NL80211_ATTR_WIPHY_BANDS], rem_band) {
if (nla_parse_nested (tb_band, NL80211_BAND_ATTR_MAX, nl_band,
NULL) < 0)
return NL_SKIP;
nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS],
rem_freq) {
nla_parse_nested (tb_freq, NL80211_FREQUENCY_ATTR_MAX,
nl_freq, freq_policy);
if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
continue;
info->num_freqs++;
}
}
info->freqs = g_malloc0 (sizeof(guint32) * info->num_freqs);
freq_idx = 0;
nla_for_each_nested (nl_band, tb[NL80211_ATTR_WIPHY_BANDS], rem_band) {
if (nla_parse_nested (tb_band, NL80211_BAND_ATTR_MAX, nl_band,
NULL) < 0)
return NL_SKIP;
nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS],
rem_freq) {
nla_parse_nested (tb_freq, NL80211_FREQUENCY_ATTR_MAX,
nl_freq, freq_policy);
if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
continue;
info->freqs[freq_idx] =
nla_get_u32 (tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
freq_idx++;
}
}
if (tb[NL80211_ATTR_CIPHER_SUITES]) {
int num;
int i;
__u32 *ciphers = nla_data (tb[NL80211_ATTR_CIPHER_SUITES]);
num = nla_len (tb[NL80211_ATTR_CIPHER_SUITES]) / sizeof(__u32);
for (i = 0; i < num; i++) {
switch (ciphers[i]) {
case 0x000fac01:
info->caps |= NM_WIFI_DEVICE_CAP_CIPHER_WEP40;
break;
case 0x000fac05:
info->caps |= NM_WIFI_DEVICE_CAP_CIPHER_WEP104;
break;
case 0x000fac02:
info->caps |= NM_WIFI_DEVICE_CAP_CIPHER_TKIP |
NM_WIFI_DEVICE_CAP_WPA;
break;
case 0x000fac04:
info->caps |= NM_WIFI_DEVICE_CAP_CIPHER_CCMP |
NM_WIFI_DEVICE_CAP_RSN;
break;
}
}
}
info->success = TRUE;
return NL_SKIP;
}
WifiData *
wifi_nl80211_init (const char *iface, int ifindex)
{
WifiDataNl80211 *nl80211;
struct nl_msg *msg;
struct nl80211_device_info device_info = {};
nl80211 = wifi_data_new (iface, ifindex, sizeof (*nl80211));
nl80211->parent.get_mode = wifi_nl80211_get_mode;
nl80211->parent.set_mode = wifi_nl80211_set_mode;
nl80211->parent.get_freq = wifi_nl80211_get_freq;
nl80211->parent.find_freq = wifi_nl80211_find_freq;
nl80211->parent.get_ssid = wifi_nl80211_get_ssid;
nl80211->parent.get_bssid = wifi_nl80211_get_bssid;
nl80211->parent.get_rate = wifi_nl80211_get_rate;
nl80211->parent.get_qual = wifi_nl80211_get_qual;
nl80211->parent.deinit = wifi_nl80211_deinit;
nl80211->nl_sock = nl_socket_alloc ();
if (nl80211->nl_sock == NULL)
goto error;
if (genl_connect (nl80211->nl_sock))
goto error;
if (genl_ctrl_alloc_cache (nl80211->nl_sock, &nl80211->nl_cache))
goto error;
nl80211->nl_family = genl_ctrl_search_by_name (nl80211->nl_cache, "nl80211");
if (nl80211->nl_family == NULL)
goto error;
nl80211->nl_cb = nl_cb_alloc (NL_CB_DEFAULT);
if (nl80211->nl_cb == NULL)
goto error;
msg = nl80211_alloc_msg (nl80211, NL80211_CMD_GET_WIPHY, 0);
if (nl80211_send_and_recv (nl80211, msg, nl80211_wiphy_info_handler,
&device_info) < 0)
goto error;
if (!device_info.success)
goto error;
if (!device_info.can_scan_ssid)
goto error;
if (device_info.num_freqs == 0 || device_info.freqs == NULL)
goto error;
nl80211->freqs = device_info.freqs;
nl80211->num_freqs = device_info.num_freqs;
nl80211->parent.can_scan_ssid = device_info.can_scan_ssid;
nl80211->parent.caps = device_info.caps;
return (WifiData *) nl80211;
error:
wifi_utils_deinit ((WifiData *) nl80211);
return NULL;
}

28
src/wifi-utils-nl80211.h Normal file
View File

@@ -0,0 +1,28 @@
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager -- Network link manager
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright (C) 2011 Intel Corporation. All rights reserved.
*/
#ifndef WIFI_UTILS_NL80211_H
#define WIFI_UTILS_NL80211_H
#include "wifi-utils.h"
WifiData *wifi_nl80211_init (const char *iface, int ifindex);
#endif /* WIFI_UTILS_NL80211_H */

View File

@@ -26,6 +26,7 @@
#include "wifi-utils.h" #include "wifi-utils.h"
#include "wifi-utils-private.h" #include "wifi-utils-private.h"
#include "wifi-utils-wext.h" #include "wifi-utils-wext.h"
#include "wifi-utils-nl80211.h"
gpointer gpointer
wifi_data_new (const char *iface, int ifindex, gsize len) wifi_data_new (const char *iface, int ifindex, gsize len)
@@ -51,10 +52,14 @@ wifi_data_free (WifiData *data)
WifiData * WifiData *
wifi_utils_init (const char *iface, int ifindex, gboolean check_scan) wifi_utils_init (const char *iface, int ifindex, gboolean check_scan)
{ {
WifiData *ret;
g_return_val_if_fail (iface != NULL, NULL); g_return_val_if_fail (iface != NULL, NULL);
g_return_val_if_fail (ifindex > 0, NULL); g_return_val_if_fail (ifindex > 0, NULL);
/* Determine WEXT vs. nl80211 here */ ret = wifi_nl80211_init (iface, ifindex);
if (ret != NULL)
return ret;
return wifi_wext_init (iface, ifindex, check_scan); return wifi_wext_init (iface, ifindex, check_scan);
} }