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cfg80211: clean up signal type 

It wasn't a good idea to make the signal type a per-BSS option,
although then it is closer to the actual value. Move it to be
a per-wiphy setting, update mac80211 to match.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-02-18 18:45:06 +01:00 committed by John W. Linville
parent 630e64c487
commit 77965c970d
6 changed files with 24 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
include/net/cfg80211.h
View File

@ -577,8 +577,7 @@ enum cfg80211_signal_type {
* @information_elements: the information elements (Note that there * @information_elements: the information elements (Note that there
* is no guarantee that these are well-formed!) * is no guarantee that these are well-formed!)
* @len_information_elements: total length of the information elements * @len_information_elements: total length of the information elements
* @signal: signal strength value * @signal: signal strength value (type depends on the wiphy's signal_type)
* @signal_type: signal type
* @free_priv: function pointer to free private data * @free_priv: function pointer to free private data
* @priv: private area for driver use, has at least wiphy->bss_priv_size bytes * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
*/ */
@ -593,7 +592,6 @@ struct cfg80211_bss {
size_t len_information_elements; size_t len_information_elements;
s32 signal; s32 signal;
enum cfg80211_signal_type signal_type;
void (*free_priv)(struct cfg80211_bss *bss); void (*free_priv)(struct cfg80211_bss *bss);
u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); u8 priv[0] __attribute__((__aligned__(sizeof(void *))));
@ -782,6 +780,7 @@ void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted);
* *
* @wiphy: the wiphy reporting the BSS * @wiphy: the wiphy reporting the BSS
* @bss: the found BSS * @bss: the found BSS
* @signal: the signal strength, type depends on the wiphy's signal_type
* @gfp: context flags * @gfp: context flags
* *
* This informs cfg80211 that BSS information was found and * This informs cfg80211 that BSS information was found and
@ -791,8 +790,7 @@ struct cfg80211_bss*
cfg80211_inform_bss_frame(struct wiphy *wiphy, cfg80211_inform_bss_frame(struct wiphy *wiphy,
struct ieee80211_channel *channel, struct ieee80211_channel *channel,
struct ieee80211_mgmt *mgmt, size_t len, struct ieee80211_mgmt *mgmt, size_t len,
s32 signal, enum cfg80211_signal_type sigtype, s32 signal, gfp_t gfp);
gfp_t gfp);
struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
struct ieee80211_channel *channel, struct ieee80211_channel *channel,

3
include/net/wireless.h
View File

@ -200,6 +200,7 @@ struct ieee80211_supported_band {
* the regulatory_hint() API. This can be used by the driver * the regulatory_hint() API. This can be used by the driver
* on the reg_notifier() if it chooses to ignore future * on the reg_notifier() if it chooses to ignore future
* regulatory domain changes caused by other drivers. * regulatory domain changes caused by other drivers.
* @signal_type: signal type reported in &struct cfg80211_bss.
*/ */
struct wiphy { struct wiphy {
/* assign these fields before you register the wiphy */ /* assign these fields before you register the wiphy */
@ -213,6 +214,8 @@ struct wiphy {
bool custom_regulatory; bool custom_regulatory;
bool strict_regulatory; bool strict_regulatory;
enum cfg80211_signal_type signal_type;
int bss_priv_size; int bss_priv_size;
u8 max_scan_ssids; u8 max_scan_ssids;

5
net/mac80211/main.c
View File

@ -861,6 +861,11 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
/* mac80211 always supports monitor */ /* mac80211 always supports monitor */
local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
result = wiphy_register(local->hw.wiphy); result = wiphy_register(local->hw.wiphy);
if (result < 0) if (result < 0)
goto fail_wiphy_register; goto fail_wiphy_register;

11
net/mac80211/scan.c
View File

@ -63,20 +63,15 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
{ {
struct ieee80211_bss *bss; struct ieee80211_bss *bss;
int clen; int clen;
enum cfg80211_signal_type sigtype = CFG80211_SIGNAL_TYPE_NONE;
s32 signal = 0; s32 signal = 0;
if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) { if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
sigtype = CFG80211_SIGNAL_TYPE_MBM;
signal = rx_status->signal * 100; signal = rx_status->signal * 100;
} else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) { else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
sigtype = CFG80211_SIGNAL_TYPE_UNSPEC;
signal = (rx_status->signal * 100) / local->hw.max_signal; signal = (rx_status->signal * 100) / local->hw.max_signal;
}
bss = (void *)cfg80211_inform_bss_frame(local->hw.wiphy, channel, bss = (void *)cfg80211_inform_bss_frame(local->hw.wiphy, channel,
mgmt, len, signal, sigtype, mgmt, len, signal, GFP_ATOMIC);
GFP_ATOMIC);
if (!bss) if (!bss)
return NULL; return NULL;

2
net/wireless/nl80211.c
View File

@ -2457,7 +2457,7 @@ static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability); NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq); NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
switch (res->signal_type) { switch (rdev->wiphy.signal_type) {
case CFG80211_SIGNAL_TYPE_MBM: case CFG80211_SIGNAL_TYPE_MBM:
NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal); NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
break; break;

21
net/wireless/scan.c
View File

@ -370,7 +370,6 @@ cfg80211_bss_update(struct cfg80211_registered_device *dev,
found->pub.beacon_interval = res->pub.beacon_interval; found->pub.beacon_interval = res->pub.beacon_interval;
found->pub.tsf = res->pub.tsf; found->pub.tsf = res->pub.tsf;
found->pub.signal = res->pub.signal; found->pub.signal = res->pub.signal;
found->pub.signal_type = res->pub.signal_type;
found->pub.capability = res->pub.capability; found->pub.capability = res->pub.capability;
found->ts = res->ts; found->ts = res->ts;
kref_put(&res->ref, bss_release); kref_put(&res->ref, bss_release);
@ -392,8 +391,7 @@ struct cfg80211_bss *
cfg80211_inform_bss_frame(struct wiphy *wiphy, cfg80211_inform_bss_frame(struct wiphy *wiphy,
struct ieee80211_channel *channel, struct ieee80211_channel *channel,
struct ieee80211_mgmt *mgmt, size_t len, struct ieee80211_mgmt *mgmt, size_t len,
s32 signal, enum cfg80211_signal_type sigtype, s32 signal, gfp_t gfp)
gfp_t gfp)
{ {
struct cfg80211_internal_bss *res; struct cfg80211_internal_bss *res;
size_t ielen = len - offsetof(struct ieee80211_mgmt, size_t ielen = len - offsetof(struct ieee80211_mgmt,
@ -401,7 +399,7 @@ cfg80211_inform_bss_frame(struct wiphy *wiphy,
bool overwrite; bool overwrite;
size_t privsz = wiphy->bss_priv_size; size_t privsz = wiphy->bss_priv_size;
if (WARN_ON(sigtype == NL80211_BSS_SIGNAL_UNSPEC && if (WARN_ON(wiphy->signal_type == NL80211_BSS_SIGNAL_UNSPEC &&
(signal < 0 || signal > 100))) (signal < 0 || signal > 100)))
return NULL; return NULL;
@ -415,7 +413,6 @@ cfg80211_inform_bss_frame(struct wiphy *wiphy,
memcpy(res->pub.bssid, mgmt->bssid, ETH_ALEN); memcpy(res->pub.bssid, mgmt->bssid, ETH_ALEN);
res->pub.channel = channel; res->pub.channel = channel;
res->pub.signal_type = sigtype;
res->pub.signal = signal; res->pub.signal = signal;
res->pub.tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp); res->pub.tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp);
res->pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int); res->pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int);
@ -607,9 +604,9 @@ static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
} }
static char * static char *
ieee80211_bss(struct iw_request_info *info, ieee80211_bss(struct wiphy *wiphy, struct iw_request_info *info,
struct cfg80211_internal_bss *bss, struct cfg80211_internal_bss *bss, char *current_ev,
char *current_ev, char *end_buf) char *end_buf)
{ {
struct iw_event iwe; struct iw_event iwe;
u8 *buf, *cfg, *p; u8 *buf, *cfg, *p;
@ -638,13 +635,13 @@ ieee80211_bss(struct iw_request_info *info,
current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
IW_EV_FREQ_LEN); IW_EV_FREQ_LEN);
if (bss->pub.signal_type != CFG80211_SIGNAL_TYPE_NONE) { if (wiphy->signal_type != CFG80211_SIGNAL_TYPE_NONE) {
memset(&iwe, 0, sizeof(iwe)); memset(&iwe, 0, sizeof(iwe));
iwe.cmd = IWEVQUAL; iwe.cmd = IWEVQUAL;
iwe.u.qual.updated = IW_QUAL_LEVEL_UPDATED | iwe.u.qual.updated = IW_QUAL_LEVEL_UPDATED |
IW_QUAL_NOISE_INVALID | IW_QUAL_NOISE_INVALID |
IW_QUAL_QUAL_UPDATED; IW_QUAL_QUAL_UPDATED;
switch (bss->pub.signal_type) { switch (wiphy->signal_type) {
case CFG80211_SIGNAL_TYPE_MBM: case CFG80211_SIGNAL_TYPE_MBM:
sig = bss->pub.signal / 100; sig = bss->pub.signal / 100;
iwe.u.qual.level = sig; iwe.u.qual.level = sig;
@ -823,8 +820,8 @@ static int ieee80211_scan_results(struct cfg80211_registered_device *dev,
spin_unlock_bh(&dev->bss_lock); spin_unlock_bh(&dev->bss_lock);
return -E2BIG; return -E2BIG;
} }
current_ev = ieee80211_bss(info, bss, current_ev = ieee80211_bss(&dev->wiphy, info, bss,
current_ev, end_buf); current_ev, end_buf);
} }
spin_unlock_bh(&dev->bss_lock); spin_unlock_bh(&dev->bss_lock);
return current_ev - buf; return current_ev - buf;