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path: root/drivers/net/wireless/intersil/orinoco/scan.c
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Diffstat (limited to 'drivers/net/wireless/intersil/orinoco/scan.c')
-rw-r--r--drivers/net/wireless/intersil/orinoco/scan.c259
1 files changed, 0 insertions, 259 deletions
diff --git a/drivers/net/wireless/intersil/orinoco/scan.c b/drivers/net/wireless/intersil/orinoco/scan.c
deleted file mode 100644
index 6d1d084854fb..000000000000
--- a/drivers/net/wireless/intersil/orinoco/scan.c
+++ /dev/null
@@ -1,259 +0,0 @@
-/* Helpers for managing scan queues
- *
- * See copyright notice in main.c
- */
-
-#include <linux/gfp.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/ieee80211.h>
-#include <net/cfg80211.h>
-
-#include "hermes.h"
-#include "orinoco.h"
-#include "main.h"
-
-#include "scan.h"
-
-#define ZERO_DBM_OFFSET 0x95
-#define MAX_SIGNAL_LEVEL 0x8A
-#define MIN_SIGNAL_LEVEL 0x2F
-
-#define SIGNAL_TO_DBM(x) \
- (clamp_t(s32, (x), MIN_SIGNAL_LEVEL, MAX_SIGNAL_LEVEL) \
- - ZERO_DBM_OFFSET)
-#define SIGNAL_TO_MBM(x) (SIGNAL_TO_DBM(x) * 100)
-
-static int symbol_build_supp_rates(u8 *buf, const __le16 *rates)
-{
- int i;
- u8 rate;
-
- buf[0] = WLAN_EID_SUPP_RATES;
- for (i = 0; i < 5; i++) {
- rate = le16_to_cpu(rates[i]);
- /* NULL terminated */
- if (rate == 0x0)
- break;
- buf[i + 2] = rate;
- }
- buf[1] = i;
-
- return i + 2;
-}
-
-static int prism_build_supp_rates(u8 *buf, const u8 *rates)
-{
- int i;
-
- buf[0] = WLAN_EID_SUPP_RATES;
- for (i = 0; i < 8; i++) {
- /* NULL terminated */
- if (rates[i] == 0x0)
- break;
- buf[i + 2] = rates[i];
- }
- buf[1] = i;
-
- /* We might still have another 2 rates, which need to go in
- * extended supported rates */
- if (i == 8 && rates[i] > 0) {
- buf[10] = WLAN_EID_EXT_SUPP_RATES;
- for (; i < 10; i++) {
- /* NULL terminated */
- if (rates[i] == 0x0)
- break;
- buf[i + 2] = rates[i];
- }
- buf[11] = i - 8;
- }
-
- return (i < 8) ? i + 2 : i + 4;
-}
-
-static void orinoco_add_hostscan_result(struct orinoco_private *priv,
- const union hermes_scan_info *bss)
-{
- struct wiphy *wiphy = priv_to_wiphy(priv);
- struct ieee80211_channel *channel;
- struct cfg80211_bss *cbss;
- u8 *ie;
- u8 ie_buf[46];
- u64 timestamp;
- s32 signal;
- u16 capability;
- u16 beacon_interval;
- int ie_len;
- int freq;
- int len;
-
- len = le16_to_cpu(bss->a.essid_len);
-
- /* Reconstruct SSID and bitrate IEs to pass up */
- ie_buf[0] = WLAN_EID_SSID;
- ie_buf[1] = len;
- memcpy(&ie_buf[2], bss->a.essid, len);
-
- ie = ie_buf + len + 2;
- ie_len = ie_buf[1] + 2;
- switch (priv->firmware_type) {
- case FIRMWARE_TYPE_SYMBOL:
- ie_len += symbol_build_supp_rates(ie, bss->s.rates);
- break;
-
- case FIRMWARE_TYPE_INTERSIL:
- ie_len += prism_build_supp_rates(ie, bss->p.rates);
- break;
-
- case FIRMWARE_TYPE_AGERE:
- default:
- break;
- }
-
- freq = ieee80211_channel_to_frequency(
- le16_to_cpu(bss->a.channel), NL80211_BAND_2GHZ);
- channel = ieee80211_get_channel(wiphy, freq);
- if (!channel) {
- printk(KERN_DEBUG "Invalid channel designation %04X(%04X)",
- bss->a.channel, freq);
- return; /* Then ignore it for now */
- }
- timestamp = 0;
- capability = le16_to_cpu(bss->a.capabilities);
- beacon_interval = le16_to_cpu(bss->a.beacon_interv);
- signal = SIGNAL_TO_MBM(le16_to_cpu(bss->a.level));
-
- cbss = cfg80211_inform_bss(wiphy, channel, CFG80211_BSS_FTYPE_UNKNOWN,
- bss->a.bssid, timestamp, capability,
- beacon_interval, ie_buf, ie_len, signal,
- GFP_KERNEL);
- cfg80211_put_bss(wiphy, cbss);
-}
-
-void orinoco_add_extscan_result(struct orinoco_private *priv,
- struct agere_ext_scan_info *bss,
- size_t len)
-{
- struct wiphy *wiphy = priv_to_wiphy(priv);
- struct ieee80211_channel *channel;
- struct cfg80211_bss *cbss;
- const u8 *ie;
- u64 timestamp;
- s32 signal;
- u16 capability;
- u16 beacon_interval;
- size_t ie_len;
- int chan, freq;
-
- ie_len = len - sizeof(*bss);
- ie = cfg80211_find_ie(WLAN_EID_DS_PARAMS, bss->data, ie_len);
- chan = ie ? ie[2] : 0;
- freq = ieee80211_channel_to_frequency(chan, NL80211_BAND_2GHZ);
- channel = ieee80211_get_channel(wiphy, freq);
-
- timestamp = le64_to_cpu(bss->timestamp);
- capability = le16_to_cpu(bss->capabilities);
- beacon_interval = le16_to_cpu(bss->beacon_interval);
- ie = bss->data;
- signal = SIGNAL_TO_MBM(bss->level);
-
- cbss = cfg80211_inform_bss(wiphy, channel, CFG80211_BSS_FTYPE_UNKNOWN,
- bss->bssid, timestamp, capability,
- beacon_interval, ie, ie_len, signal,
- GFP_KERNEL);
- cfg80211_put_bss(wiphy, cbss);
-}
-
-void orinoco_add_hostscan_results(struct orinoco_private *priv,
- unsigned char *buf,
- size_t len)
-{
- int offset; /* In the scan data */
- size_t atom_len;
- bool abort = false;
-
- switch (priv->firmware_type) {
- case FIRMWARE_TYPE_AGERE:
- atom_len = sizeof(struct agere_scan_apinfo);
- offset = 0;
- break;
-
- case FIRMWARE_TYPE_SYMBOL:
- /* Lack of documentation necessitates this hack.
- * Different firmwares have 68 or 76 byte long atoms.
- * We try modulo first. If the length divides by both,
- * we check what would be the channel in the second
- * frame for a 68-byte atom. 76-byte atoms have 0 there.
- * Valid channel cannot be 0. */
- if (len % 76)
- atom_len = 68;
- else if (len % 68)
- atom_len = 76;
- else if (len >= 1292 && buf[68] == 0)
- atom_len = 76;
- else
- atom_len = 68;
- offset = 0;
- break;
-
- case FIRMWARE_TYPE_INTERSIL:
- offset = 4;
- if (priv->has_hostscan) {
- atom_len = le16_to_cpup((__le16 *)buf);
- /* Sanity check for atom_len */
- if (atom_len < sizeof(struct prism2_scan_apinfo)) {
- printk(KERN_ERR "%s: Invalid atom_len in scan "
- "data: %zu\n", priv->ndev->name,
- atom_len);
- abort = true;
- goto scan_abort;
- }
- } else
- atom_len = offsetof(struct prism2_scan_apinfo, atim);
- break;
-
- default:
- abort = true;
- goto scan_abort;
- }
-
- /* Check that we got an whole number of atoms */
- if ((len - offset) % atom_len) {
- printk(KERN_ERR "%s: Unexpected scan data length %zu, "
- "atom_len %zu, offset %d\n", priv->ndev->name, len,
- atom_len, offset);
- abort = true;
- goto scan_abort;
- }
-
- /* Process the entries one by one */
- for (; offset + atom_len <= len; offset += atom_len) {
- union hermes_scan_info *atom;
-
- atom = (union hermes_scan_info *) (buf + offset);
-
- orinoco_add_hostscan_result(priv, atom);
- }
-
- scan_abort:
- if (priv->scan_request) {
- struct cfg80211_scan_info info = {
- .aborted = abort,
- };
-
- cfg80211_scan_done(priv->scan_request, &info);
- priv->scan_request = NULL;
- }
-}
-
-void orinoco_scan_done(struct orinoco_private *priv, bool abort)
-{
- if (priv->scan_request) {
- struct cfg80211_scan_info info = {
- .aborted = abort,
- };
-
- cfg80211_scan_done(priv->scan_request, &info);
- priv->scan_request = NULL;
- }
-}