diff options
Diffstat (limited to 'drivers/net/wireless/intersil/orinoco/scan.c')
| -rw-r--r-- | drivers/net/wireless/intersil/orinoco/scan.c | 259 |
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; - } -} |