* IOCTL handlers as well as command preperation and response routines
* for sending scan commands to the firmware.
*/
-#include <linux/ctype.h>
-#include <linux/if.h>
-#include <linux/netdevice.h>
-#include <linux/wireless.h>
#include <linux/etherdevice.h>
-
-#include <net/ieee80211.h>
-#include <net/iw_handler.h>
-
#include <asm/unaligned.h>
#include "host.h"
#include "decl.h"
#include "dev.h"
#include "scan.h"
-#include "join.h"
#include "cmd.h"
//! Approximate amount of data needed to pass a scan result back to iwlist
return memcmp(ssid1, ssid2, ssid1_len);
}
-static inline int match_bss_no_security(struct lbs_802_11_security *secinfo,
- struct bss_descriptor *match_bss)
-{
- if (!secinfo->wep_enabled && !secinfo->WPAenabled
- && !secinfo->WPA2enabled
- && match_bss->wpa_ie[0] != MFIE_TYPE_GENERIC
- && match_bss->rsn_ie[0] != MFIE_TYPE_RSN
- && !(match_bss->capability & WLAN_CAPABILITY_PRIVACY))
- return 1;
- else
- return 0;
-}
-
-static inline int match_bss_static_wep(struct lbs_802_11_security *secinfo,
- struct bss_descriptor *match_bss)
-{
- if (secinfo->wep_enabled && !secinfo->WPAenabled
- && !secinfo->WPA2enabled
- && (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
- return 1;
- else
- return 0;
-}
-
-static inline int match_bss_wpa(struct lbs_802_11_security *secinfo,
- struct bss_descriptor *match_bss)
-{
- if (!secinfo->wep_enabled && secinfo->WPAenabled
- && (match_bss->wpa_ie[0] == MFIE_TYPE_GENERIC)
- /* privacy bit may NOT be set in some APs like LinkSys WRT54G
- && (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
- )
- return 1;
- else
- return 0;
-}
-
-static inline int match_bss_wpa2(struct lbs_802_11_security *secinfo,
- struct bss_descriptor *match_bss)
-{
- if (!secinfo->wep_enabled && secinfo->WPA2enabled
- && (match_bss->rsn_ie[0] == MFIE_TYPE_RSN)
- /* privacy bit may NOT be set in some APs like LinkSys WRT54G
- && (match_bss->capability & WLAN_CAPABILITY_PRIVACY) */
- )
- return 1;
- else
- return 0;
-}
-
-static inline int match_bss_dynamic_wep(struct lbs_802_11_security *secinfo,
- struct bss_descriptor *match_bss)
-{
- if (!secinfo->wep_enabled && !secinfo->WPAenabled
- && !secinfo->WPA2enabled
- && (match_bss->wpa_ie[0] != MFIE_TYPE_GENERIC)
- && (match_bss->rsn_ie[0] != MFIE_TYPE_RSN)
- && (match_bss->capability & WLAN_CAPABILITY_PRIVACY))
- return 1;
- else
- return 0;
-}
-
static inline int is_same_network(struct bss_descriptor *src,
struct bss_descriptor *dst)
{
!memcmp(src->ssid, dst->ssid, src->ssid_len));
}
-/**
- * @brief Check if a scanned network compatible with the driver settings
- *
- * WEP WPA WPA2 ad-hoc encrypt Network
- * enabled enabled enabled AES mode privacy WPA WPA2 Compatible
- * 0 0 0 0 NONE 0 0 0 yes No security
- * 1 0 0 0 NONE 1 0 0 yes Static WEP
- * 0 1 0 0 x 1x 1 x yes WPA
- * 0 0 1 0 x 1x x 1 yes WPA2
- * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
- * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
- *
- *
- * @param priv A pointer to struct lbs_private
- * @param index Index in scantable to check against current driver settings
- * @param mode Network mode: Infrastructure or IBSS
- *
- * @return Index in scantable, or error code if negative
- */
-static int is_network_compatible(struct lbs_private *priv,
- struct bss_descriptor *bss, uint8_t mode)
-{
- int matched = 0;
-
- lbs_deb_enter(LBS_DEB_SCAN);
-
- if (bss->mode != mode)
- goto done;
-
- if ((matched = match_bss_no_security(&priv->secinfo, bss))) {
- goto done;
- } else if ((matched = match_bss_static_wep(&priv->secinfo, bss))) {
- goto done;
- } else if ((matched = match_bss_wpa(&priv->secinfo, bss))) {
- lbs_deb_scan("is_network_compatible() WPA: wpa_ie 0x%x "
- "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
- "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
- priv->secinfo.wep_enabled ? "e" : "d",
- priv->secinfo.WPAenabled ? "e" : "d",
- priv->secinfo.WPA2enabled ? "e" : "d",
- (bss->capability & WLAN_CAPABILITY_PRIVACY));
- goto done;
- } else if ((matched = match_bss_wpa2(&priv->secinfo, bss))) {
- lbs_deb_scan("is_network_compatible() WPA2: wpa_ie 0x%x "
- "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s "
- "privacy 0x%x\n", bss->wpa_ie[0], bss->rsn_ie[0],
- priv->secinfo.wep_enabled ? "e" : "d",
- priv->secinfo.WPAenabled ? "e" : "d",
- priv->secinfo.WPA2enabled ? "e" : "d",
- (bss->capability & WLAN_CAPABILITY_PRIVACY));
- goto done;
- } else if ((matched = match_bss_dynamic_wep(&priv->secinfo, bss))) {
- lbs_deb_scan("is_network_compatible() dynamic WEP: "
- "wpa_ie 0x%x wpa2_ie 0x%x privacy 0x%x\n",
- bss->wpa_ie[0], bss->rsn_ie[0],
- (bss->capability & WLAN_CAPABILITY_PRIVACY));
- goto done;
- }
-
- /* bss security settings don't match those configured on card */
- lbs_deb_scan("is_network_compatible() FAILED: wpa_ie 0x%x "
- "wpa2_ie 0x%x WEP %s WPA %s WPA2 %s privacy 0x%x\n",
- bss->wpa_ie[0], bss->rsn_ie[0],
- priv->secinfo.wep_enabled ? "e" : "d",
- priv->secinfo.WPAenabled ? "e" : "d",
- priv->secinfo.WPA2enabled ? "e" : "d",
- (bss->capability & WLAN_CAPABILITY_PRIVACY));
-
-done:
- lbs_deb_leave_args(LBS_DEB_SCAN, "matched: %d", matched);
- return matched;
-}
return chanidx;
}
-
/*
* Add SSID TLV of the form:
*
return sizeof(ssid_tlv->header) + priv->scan_ssid_len;
}
-
/*
* Add CHANLIST TLV of the form
*
return sizeof(chan_tlv->header) + size;
}
-
/*
* Add RATES TLV of the form
*
return sizeof(rate_tlv->header) + i;
}
-
/*
* Generate the CMD_802_11_SCAN command with the proper tlv
* for a bunch of channels.
uint8_t *tlv; /* pointer into our current, growing TLV storage area */
lbs_deb_enter_args(LBS_DEB_SCAN, "bsstype %d, chanlist[].chan %d, chan_count %d",
- bsstype, chan_list[0].channumber, chan_count);
+ bsstype, chan_list ? chan_list[0].channumber : -1,
+ chan_count);
/* create the fixed part for scan command */
scan_cmd = kzalloc(MAX_SCAN_CFG_ALLOC, GFP_KERNEL);
return ret;
}
-
/**
* @brief Internal function used to start a scan based on an input config
*
- * Also used from debugfs
- *
* Use the input user scan configuration information when provided in
* order to send the appropriate scan commands to firmware to populate or
* update the internal driver scan table
*
* @return 0 or < 0 if error
*/
-static int lbs_scan_networks(struct lbs_private *priv, int full_scan)
+int lbs_scan_networks(struct lbs_private *priv, int full_scan)
{
int ret = -ENOMEM;
struct chanscanparamset *chan_list;
lbs_deb_scan("scan table:\n");
list_for_each_entry(iter, &priv->network_list, list)
lbs_deb_scan("%02d: BSSID %s, RSSI %d, SSID '%s'\n",
- i++, print_mac(mac, iter->bssid), (int)iter->rssi,
+ i++, print_mac(mac, iter->bssid), iter->rssi,
escape_essid(iter->ssid, iter->ssid_len));
mutex_unlock(&priv->lock);
#endif
return ret;
}
-
-
-
void lbs_scan_worker(struct work_struct *work)
{
struct lbs_private *priv =
if (*bytesleft >= sizeof(beaconsize)) {
/* Extract & convert beacon size from the command buffer */
- beaconsize = le16_to_cpu(get_unaligned((__le16 *)*pbeaconinfo));
+ beaconsize = get_unaligned_le16(*pbeaconinfo);
*bytesleft -= sizeof(beaconsize);
*pbeaconinfo += sizeof(beaconsize);
}
return ret;
}
-/**
- * @brief This function finds a specific compatible BSSID in the scan list
- *
- * Used in association code
- *
- * @param priv A pointer to struct lbs_private
- * @param bssid BSSID to find in the scan list
- * @param mode Network mode: Infrastructure or IBSS
- *
- * @return index in BSSID list, or error return code (< 0)
- */
-struct bss_descriptor *lbs_find_bssid_in_list(struct lbs_private *priv,
- uint8_t *bssid, uint8_t mode)
-{
- struct bss_descriptor *iter_bss;
- struct bss_descriptor *found_bss = NULL;
-
- lbs_deb_enter(LBS_DEB_SCAN);
-
- if (!bssid)
- goto out;
-
- lbs_deb_hex(LBS_DEB_SCAN, "looking for", bssid, ETH_ALEN);
-
- /* Look through the scan table for a compatible match. The loop will
- * continue past a matched bssid that is not compatible in case there
- * is an AP with multiple SSIDs assigned to the same BSSID
- */
- mutex_lock(&priv->lock);
- list_for_each_entry (iter_bss, &priv->network_list, list) {
- if (compare_ether_addr(iter_bss->bssid, bssid))
- continue; /* bssid doesn't match */
- switch (mode) {
- case IW_MODE_INFRA:
- case IW_MODE_ADHOC:
- if (!is_network_compatible(priv, iter_bss, mode))
- break;
- found_bss = iter_bss;
- break;
- default:
- found_bss = iter_bss;
- break;
- }
- }
- mutex_unlock(&priv->lock);
-
-out:
- lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
- return found_bss;
-}
-
-/**
- * @brief This function finds ssid in ssid list.
- *
- * Used in association code
- *
- * @param priv A pointer to struct lbs_private
- * @param ssid SSID to find in the list
- * @param bssid BSSID to qualify the SSID selection (if provided)
- * @param mode Network mode: Infrastructure or IBSS
- *
- * @return index in BSSID list
- */
-struct bss_descriptor *lbs_find_ssid_in_list(struct lbs_private *priv,
- uint8_t *ssid, uint8_t ssid_len,
- uint8_t *bssid, uint8_t mode,
- int channel)
-{
- uint8_t bestrssi = 0;
- struct bss_descriptor * iter_bss = NULL;
- struct bss_descriptor * found_bss = NULL;
- struct bss_descriptor * tmp_oldest = NULL;
-
- lbs_deb_enter(LBS_DEB_SCAN);
-
- mutex_lock(&priv->lock);
-
- list_for_each_entry (iter_bss, &priv->network_list, list) {
- if ( !tmp_oldest
- || (iter_bss->last_scanned < tmp_oldest->last_scanned))
- tmp_oldest = iter_bss;
-
- if (lbs_ssid_cmp(iter_bss->ssid, iter_bss->ssid_len,
- ssid, ssid_len) != 0)
- continue; /* ssid doesn't match */
- if (bssid && compare_ether_addr(iter_bss->bssid, bssid) != 0)
- continue; /* bssid doesn't match */
- if ((channel > 0) && (iter_bss->channel != channel))
- continue; /* channel doesn't match */
-
- switch (mode) {
- case IW_MODE_INFRA:
- case IW_MODE_ADHOC:
- if (!is_network_compatible(priv, iter_bss, mode))
- break;
-
- if (bssid) {
- /* Found requested BSSID */
- found_bss = iter_bss;
- goto out;
- }
-
- if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
- bestrssi = SCAN_RSSI(iter_bss->rssi);
- found_bss = iter_bss;
- }
- break;
- case IW_MODE_AUTO:
- default:
- if (SCAN_RSSI(iter_bss->rssi) > bestrssi) {
- bestrssi = SCAN_RSSI(iter_bss->rssi);
- found_bss = iter_bss;
- }
- break;
- }
- }
-
-out:
- mutex_unlock(&priv->lock);
- lbs_deb_leave_args(LBS_DEB_SCAN, "found_bss %p", found_bss);
- return found_bss;
-}
-
-/**
- * @brief This function finds the best SSID in the Scan List
- *
- * Search the scan table for the best SSID that also matches the current
- * adapter network preference (infrastructure or adhoc)
- *
- * @param priv A pointer to struct lbs_private
- *
- * @return index in BSSID list
- */
-static struct bss_descriptor *lbs_find_best_ssid_in_list(struct lbs_private *priv,
- uint8_t mode)
-{
- uint8_t bestrssi = 0;
- struct bss_descriptor *iter_bss;
- struct bss_descriptor *best_bss = NULL;
-
- lbs_deb_enter(LBS_DEB_SCAN);
-
- mutex_lock(&priv->lock);
-
- list_for_each_entry (iter_bss, &priv->network_list, list) {
- switch (mode) {
- case IW_MODE_INFRA:
- case IW_MODE_ADHOC:
- if (!is_network_compatible(priv, iter_bss, mode))
- break;
- if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
- break;
- bestrssi = SCAN_RSSI(iter_bss->rssi);
- best_bss = iter_bss;
- break;
- case IW_MODE_AUTO:
- default:
- if (SCAN_RSSI(iter_bss->rssi) <= bestrssi)
- break;
- bestrssi = SCAN_RSSI(iter_bss->rssi);
- best_bss = iter_bss;
- break;
- }
- }
-
- mutex_unlock(&priv->lock);
- lbs_deb_leave_args(LBS_DEB_SCAN, "best_bss %p", best_bss);
- return best_bss;
-}
-
-/**
- * @brief Find the best AP
- *
- * Used from association worker.
- *
- * @param priv A pointer to struct lbs_private structure
- * @param pSSID A pointer to AP's ssid
- *
- * @return 0--success, otherwise--fail
- */
-int lbs_find_best_network_ssid(struct lbs_private *priv, uint8_t *out_ssid,
- uint8_t *out_ssid_len, uint8_t preferred_mode,
- uint8_t *out_mode)
-{
- int ret = -1;
- struct bss_descriptor *found;
-
- lbs_deb_enter(LBS_DEB_SCAN);
-
- priv->scan_ssid_len = 0;
- lbs_scan_networks(priv, 1);
- if (priv->surpriseremoved)
- goto out;
-
- found = lbs_find_best_ssid_in_list(priv, preferred_mode);
- if (found && (found->ssid_len > 0)) {
- memcpy(out_ssid, &found->ssid, IW_ESSID_MAX_SIZE);
- *out_ssid_len = found->ssid_len;
- *out_mode = found->mode;
- ret = 0;
- }
-
-out:
- lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
- return ret;
-}
-
-
/**
* @brief Send a scan command for all available channels filtered on a spec
*
#define MAX_CUSTOM_LEN 64
static inline char *lbs_translate_scan(struct lbs_private *priv,
- char *start, char *stop,
- struct bss_descriptor *bss)
+ struct iw_request_info *info,
+ char *start, char *stop,
+ struct bss_descriptor *bss)
{
struct chan_freq_power *cfp;
char *current_val; /* For rates */
iwe.cmd = SIOCGIWAP;
iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
memcpy(iwe.u.ap_addr.sa_data, &bss->bssid, ETH_ALEN);
- start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN);
+ start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_ADDR_LEN);
/* SSID */
iwe.cmd = SIOCGIWESSID;
iwe.u.data.flags = 1;
iwe.u.data.length = min((uint32_t) bss->ssid_len, (uint32_t) IW_ESSID_MAX_SIZE);
- start = iwe_stream_add_point(start, stop, &iwe, bss->ssid);
+ start = iwe_stream_add_point(info, start, stop, &iwe, bss->ssid);
/* Mode */
iwe.cmd = SIOCGIWMODE;
iwe.u.mode = bss->mode;
- start = iwe_stream_add_event(start, stop, &iwe, IW_EV_UINT_LEN);
+ start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_UINT_LEN);
/* Frequency */
iwe.cmd = SIOCGIWFREQ;
iwe.u.freq.m = (long)cfp->freq * 100000;
iwe.u.freq.e = 1;
- start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN);
+ start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN);
/* Add quality statistics */
iwe.cmd = IWEVQUAL;
nf = priv->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE;
iwe.u.qual.level = CAL_RSSI(snr, nf);
}
- start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN);
+ start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN);
/* Add encryption capability */
iwe.cmd = SIOCGIWENCODE;
iwe.u.data.flags = IW_ENCODE_DISABLED;
}
iwe.u.data.length = 0;
- start = iwe_stream_add_point(start, stop, &iwe, bss->ssid);
+ start = iwe_stream_add_point(info, start, stop, &iwe, bss->ssid);
- current_val = start + IW_EV_LCP_LEN;
+ current_val = start + iwe_stream_lcp_len(info);
iwe.cmd = SIOCGIWRATE;
iwe.u.bitrate.fixed = 0;
for (j = 0; bss->rates[j] && (j < sizeof(bss->rates)); j++) {
/* Bit rate given in 500 kb/s units */
iwe.u.bitrate.value = bss->rates[j] * 500000;
- current_val = iwe_stream_add_value(start, current_val,
- stop, &iwe, IW_EV_PARAM_LEN);
+ current_val = iwe_stream_add_value(info, start, current_val,
+ stop, &iwe, IW_EV_PARAM_LEN);
}
if ((bss->mode == IW_MODE_ADHOC) && priv->adhoccreate
&& !lbs_ssid_cmp(priv->curbssparams.ssid,
priv->curbssparams.ssid_len,
bss->ssid, bss->ssid_len)) {
iwe.u.bitrate.value = 22 * 500000;
- current_val = iwe_stream_add_value(start, current_val,
+ current_val = iwe_stream_add_value(info, start, current_val,
stop, &iwe, IW_EV_PARAM_LEN);
}
/* Check if we added any event */
- if((current_val - start) > IW_EV_LCP_LEN)
+ if ((current_val - start) > iwe_stream_lcp_len(info))
start = current_val;
memset(&iwe, 0, sizeof(iwe));
memcpy(buf, bss->wpa_ie, bss->wpa_ie_len);
iwe.cmd = IWEVGENIE;
iwe.u.data.length = bss->wpa_ie_len;
- start = iwe_stream_add_point(start, stop, &iwe, buf);
+ start = iwe_stream_add_point(info, start, stop, &iwe, buf);
}
memset(&iwe, 0, sizeof(iwe));
memcpy(buf, bss->rsn_ie, bss->rsn_ie_len);
iwe.cmd = IWEVGENIE;
iwe.u.data.length = bss->rsn_ie_len;
- start = iwe_stream_add_point(start, stop, &iwe, buf);
+ start = iwe_stream_add_point(info, start, stop, &iwe, buf);
}
if (bss->mesh) {
p += snprintf(p, MAX_CUSTOM_LEN, "mesh-type: olpc");
iwe.u.data.length = p - custom;
if (iwe.u.data.length)
- start = iwe_stream_add_point(start, stop, &iwe, custom);
+ start = iwe_stream_add_point(info, start, stop,
+ &iwe, custom);
}
out:
}
/* Translate to WE format this entry */
- next_ev = lbs_translate_scan(priv, ev, stop, iter_bss);
+ next_ev = lbs_translate_scan(priv, info, ev, stop, iter_bss);
if (next_ev == NULL)
continue;
ev = next_ev;
projects / linux-2.6-omap-h63xx.git / blobdiff