Skip to content

L
linux
Commit 1fe0adb4 authored by Liu Hong's avatar Liu Hong Committed by James Ketrenos
Browse files
Options

Migrated some of the channel verification code back into the driver to 

keep regulatory consistency in one location.

Signed-off-by: James Ketrenos
parent f6c5cb7c
Show whitespace changes
Inline Side-by-side
Showing with 152 additions and 21 deletions
drivers/net/wireless/ipw2200.c
View file @ 1fe0adb4
......@@ -149,6 +149,12 @@ static int init_supported_rates(struct ipw_priv *priv,
static void ipw_set_hwcrypto_keys(struct ipw_priv *);
static void ipw_send_wep_keys(struct ipw_priv *, int);
static int ipw_is_valid_channel(struct ieee80211_device *, u8);
static int ipw_channel_to_index(struct ieee80211_device *, u8);
static u8 ipw_freq_to_channel(struct ieee80211_device *, u32);
static int ipw_set_geo(struct ieee80211_device *, const struct ieee80211_geo *);
static const struct ieee80211_geo *ipw_get_geo(struct ieee80211_device *);
static int snprint_line(char *buf, size_t count,
const u8 * data, u32 len, u32 ofs)
{
......@@ -1596,7 +1602,7 @@ static ssize_t store_speed_scan(struct device *d, struct device_attribute *attr,
break;
}
if (ieee80211_is_valid_channel(priv->ieee, channel))
if (ipw_is_valid_channel(priv->ieee, channel))
priv->speed_scan[pos++] = channel;
else
IPW_WARNING("Skipping invalid channel request: %d\n",
......@@ -2194,7 +2200,7 @@ static int ipw_send_tx_power(struct ipw_priv *priv, struct ipw_tx_power *power)
static int ipw_set_tx_power(struct ipw_priv *priv)
{
const struct ieee80211_geo *geo = ieee80211_get_geo(priv->ieee);
const struct ieee80211_geo *geo = ipw_get_geo(priv->ieee);
struct ipw_tx_power tx_power;
s8 max_power;
int i;
......@@ -5503,6 +5509,15 @@ static int ipw_best_network(struct ipw_priv *priv,
return 0;
}
/* Filter out invalid channel in current GEO */
if (!ipw_is_valid_channel(priv->ieee, network->channel)) {
IPW_DEBUG_ASSOC("Network '%s (" MAC_FMT ")' excluded "
"because of invalid channel in current GEO\n",
escape_essid(network->ssid, network->ssid_len),
MAC_ARG(network->bssid));
return 0;
}
/* Ensure that the rates supported by the driver are compatible with
* this AP, including verification of basic rates (mandatory) */
if (!ipw_compatible_rates(priv, network, &rates)) {
......@@ -5540,7 +5555,7 @@ static int ipw_best_network(struct ipw_priv *priv,
static void ipw_adhoc_create(struct ipw_priv *priv,
struct ieee80211_network *network)
{
const struct ieee80211_geo *geo = ieee80211_get_geo(priv->ieee);
const struct ieee80211_geo *geo = ipw_get_geo(priv->ieee);
int i;
/*
......@@ -5555,10 +5570,10 @@ static void ipw_adhoc_create(struct ipw_priv *priv,
* FW fatal error.
*
*/
switch (ieee80211_is_valid_channel(priv->ieee, priv->channel)) {
switch (ipw_is_valid_channel(priv->ieee, priv->channel)) {
case IEEE80211_52GHZ_BAND:
network->mode = IEEE_A;
i = ieee80211_channel_to_index(priv->ieee, priv->channel);
i = ipw_channel_to_index(priv->ieee, priv->channel);
if (i == -1)
BUG();
if (geo->a[i].flags & IEEE80211_CH_PASSIVE_ONLY) {
......@@ -5572,6 +5587,13 @@ static void ipw_adhoc_create(struct ipw_priv *priv,
network->mode = IEEE_G;
else
network->mode = IEEE_B;
i = ipw_channel_to_index(priv->ieee, priv->channel);
if (i == -1)
BUG();
if (geo->bg[i].flags & IEEE80211_CH_PASSIVE_ONLY) {
IPW_WARNING("Overriding invalid channel\n");
priv->channel = geo->bg[0].channel;
}
break;
default:
......@@ -5899,7 +5921,7 @@ static void ipw_add_scan_channels(struct ipw_priv *priv,
const struct ieee80211_geo *geo;
int i;
geo = ieee80211_get_geo(priv->ieee);
geo = ipw_get_geo(priv->ieee);
if (priv->ieee->freq_band & IEEE80211_52GHZ_BAND) {
int start = channel_index;
......@@ -5909,7 +5931,11 @@ static void ipw_add_scan_channels(struct ipw_priv *priv,
continue;
channel_index++;
scan->channels_list[channel_index] = geo->a[i].channel;
ipw_set_scan_type(scan, channel_index, scan_type);
ipw_set_scan_type(scan, channel_index,
geo->a[i].
flags & IEEE80211_CH_PASSIVE_ONLY ?
IPW_SCAN_PASSIVE_FULL_DWELL_SCAN :
scan_type);
}
if (start != channel_index) {
......@@ -5922,6 +5948,7 @@ static void ipw_add_scan_channels(struct ipw_priv *priv,
if (priv->ieee->freq_band & IEEE80211_24GHZ_BAND) {
int start = channel_index;
if (priv->config & CFG_SPEED_SCAN) {
int index;
u8 channels[IEEE80211_24GHZ_CHANNELS] = {
/* nop out the list */
[0] = 0
......@@ -5953,8 +5980,14 @@ static void ipw_add_scan_channels(struct ipw_priv *priv,
priv->speed_scan_pos++;
channel_index++;
scan->channels_list[channel_index] = channel;
index =
ipw_channel_to_index(priv->ieee, channel);
ipw_set_scan_type(scan, channel_index,
scan_type);
geo->bg[index].
flags &
IEEE80211_CH_PASSIVE_ONLY ?
IPW_SCAN_PASSIVE_FULL_DWELL_SCAN
: scan_type);
}
} else {
for (i = 0; i < geo->bg_channels; i++) {
......@@ -5965,7 +5998,11 @@ static void ipw_add_scan_channels(struct ipw_priv *priv,
scan->channels_list[channel_index] =
geo->bg[i].channel;
ipw_set_scan_type(scan, channel_index,
scan_type);
geo->bg[i].
flags &
IEEE80211_CH_PASSIVE_ONLY ?
IPW_SCAN_PASSIVE_FULL_DWELL_SCAN
: scan_type);
}
}
......@@ -6017,7 +6054,7 @@ static int ipw_request_scan(struct ipw_priv *priv)
scan.dwell_time[IPW_SCAN_ACTIVE_BROADCAST_AND_DIRECT_SCAN] =
cpu_to_le16(20);
scan.dwell_time[IPW_SCAN_PASSIVE_FULL_DWELL_SCAN] = cpu_to_le16(20);
scan.dwell_time[IPW_SCAN_PASSIVE_FULL_DWELL_SCAN] = cpu_to_le16(120);
scan.full_scan_index = cpu_to_le32(ieee80211_get_scans(priv->ieee));
......@@ -6026,7 +6063,7 @@ static int ipw_request_scan(struct ipw_priv *priv)
u8 channel;
u8 band = 0;
switch (ieee80211_is_valid_channel(priv->ieee, priv->channel)) {
switch (ipw_is_valid_channel(priv->ieee, priv->channel)) {
case IEEE80211_52GHZ_BAND:
band = (u8) (IPW_A_MODE << 6) | 1;
channel = priv->channel;
......@@ -8401,10 +8438,11 @@ static int ipw_wx_set_freq(struct net_device *dev,
union iwreq_data *wrqu, char *extra)
{
struct ipw_priv *priv = ieee80211_priv(dev);
const struct ieee80211_geo *geo = ieee80211_get_geo(priv->ieee);
const struct ieee80211_geo *geo = ipw_get_geo(priv->ieee);
struct iw_freq *fwrq = &wrqu->freq;
int ret = 0, i;
u8 channel;
u8 channel, flags;
int band;
if (fwrq->m == 0) {
IPW_DEBUG_WX("SET Freq/Channel -> any\n");
......@@ -8415,20 +8453,23 @@ static int ipw_wx_set_freq(struct net_device *dev,
}
/* if setting by freq convert to channel */
if (fwrq->e == 1) {
channel = ieee80211_freq_to_channel(priv->ieee, fwrq->m);
channel = ipw_freq_to_channel(priv->ieee, fwrq->m);
if (channel == 0)
return -EINVAL;
} else
channel = fwrq->m;
if (!ieee80211_is_valid_channel(priv->ieee, channel))
if (!(band = ipw_is_valid_channel(priv->ieee, channel)))
return -EINVAL;
if (priv->ieee->iw_mode == IW_MODE_ADHOC && priv->ieee->mode & IEEE_A) {
i = ieee80211_channel_to_index(priv->ieee, channel);
if (priv->ieee->iw_mode == IW_MODE_ADHOC) {
i = ipw_channel_to_index(priv->ieee, channel);
if (i == -1)
return -EINVAL;
if (geo->a[i].flags & IEEE80211_CH_PASSIVE_ONLY) {
flags = (band == IEEE80211_24GHZ_BAND) ?
geo->bg[i].flags : geo->a[i].flags;
if (flags & IEEE80211_CH_PASSIVE_ONLY) {
IPW_DEBUG_WX("Invalid Ad-Hoc channel for 802.11a\n");
return -EINVAL;
}
......@@ -8546,7 +8587,7 @@ static int ipw_wx_get_range(struct net_device *dev,
{
struct ipw_priv *priv = ieee80211_priv(dev);
struct iw_range *range = (struct iw_range *)extra;
const struct ieee80211_geo *geo = ieee80211_get_geo(priv->ieee);
const struct ieee80211_geo *geo = ipw_get_geo(priv->ieee);
int i = 0, j;
wrqu->data.length = sizeof(*range);
......@@ -9147,7 +9188,7 @@ static int ipw_request_direct_scan(struct ipw_priv *priv, char *essid,
scan.dwell_time[IPW_SCAN_ACTIVE_BROADCAST_AND_DIRECT_SCAN] =
cpu_to_le16(20);
scan.dwell_time[IPW_SCAN_PASSIVE_FULL_DWELL_SCAN] = cpu_to_le16(20);
scan.dwell_time[IPW_SCAN_PASSIVE_FULL_DWELL_SCAN] = cpu_to_le16(120);
scan.dwell_time[IPW_SCAN_ACTIVE_DIRECT_SCAN] = cpu_to_le16(20);
scan.full_scan_index = cpu_to_le32(ieee80211_get_scans(priv->ieee));
......@@ -10775,6 +10816,96 @@ static const struct ieee80211_geo ipw_geos[] = {
}
};
/* GEO code borrowed from ieee80211_geo.c */
static int ipw_is_valid_channel(struct ieee80211_device *ieee, u8 channel)
{
int i;
/* Driver needs to initialize the geography map before using
* these helper functions */
BUG_ON(ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0);
if (ieee->freq_band & IEEE80211_24GHZ_BAND)
for (i = 0; i < ieee->geo.bg_channels; i++)
/* NOTE: If G mode is currently supported but
* this is a B only channel, we don't see it
* as valid. */
if ((ieee->geo.bg[i].channel == channel) &&
(!(ieee->mode & IEEE_G) ||
!(ieee->geo.bg[i].flags & IEEE80211_CH_B_ONLY)))
return IEEE80211_24GHZ_BAND;
if (ieee->freq_band & IEEE80211_52GHZ_BAND)
for (i = 0; i < ieee->geo.a_channels; i++)
if (ieee->geo.a[i].channel == channel)
return IEEE80211_52GHZ_BAND;
return 0;
}
static int ipw_channel_to_index(struct ieee80211_device *ieee, u8 channel)
{
int i;
/* Driver needs to initialize the geography map before using
* these helper functions */
BUG_ON(ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0);
if (ieee->freq_band & IEEE80211_24GHZ_BAND)
for (i = 0; i < ieee->geo.bg_channels; i++)
if (ieee->geo.bg[i].channel == channel)
return i;
if (ieee->freq_band & IEEE80211_52GHZ_BAND)
for (i = 0; i < ieee->geo.a_channels; i++)
if (ieee->geo.a[i].channel == channel)
return i;
return -1;
}
static u8 ipw_freq_to_channel(struct ieee80211_device *ieee, u32 freq)
{
int i;
/* Driver needs to initialize the geography map before using
* these helper functions */
BUG_ON(ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0);
freq /= 100000;
if (ieee->freq_band & IEEE80211_24GHZ_BAND)
for (i = 0; i < ieee->geo.bg_channels; i++)
if (ieee->geo.bg[i].freq == freq)
return ieee->geo.bg[i].channel;
if (ieee->freq_band & IEEE80211_52GHZ_BAND)
for (i = 0; i < ieee->geo.a_channels; i++)
if (ieee->geo.a[i].freq == freq)
return ieee->geo.a[i].channel;
return 0;
}
static int ipw_set_geo(struct ieee80211_device *ieee,
const struct ieee80211_geo *geo)
{
memcpy(ieee->geo.name, geo->name, 3);
ieee->geo.name[3] = '\0';
ieee->geo.bg_channels = geo->bg_channels;
ieee->geo.a_channels = geo->a_channels;
memcpy(ieee->geo.bg, geo->bg, geo->bg_channels *
sizeof(struct ieee80211_channel));
memcpy(ieee->geo.a, geo->a, ieee->geo.a_channels *
sizeof(struct ieee80211_channel));
return 0;
}
static const struct ieee80211_geo *ipw_get_geo(struct ieee80211_device *ieee)
{
return &ieee->geo;
}
#define MAX_HW_RESTARTS 5
static int ipw_up(struct ipw_priv *priv)
{
......@@ -10816,7 +10947,7 @@ static int ipw_up(struct ipw_priv *priv)
}
if (j == ARRAY_SIZE(ipw_geos))
j = 0;
if (ieee80211_set_geo(priv->ieee, &ipw_geos[j])) {
if (ipw_set_geo(priv->ieee, &ipw_geos[j])) {
IPW_WARNING("Could not set geography.");
return 0;
}
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7