libertas: move association code from scan.c into assoc.c

Besides code moving, I did the following changes:

* made some functions static
* removed some unneeded #include's
* made patch checkpatch.pl clean

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 363 deletions

diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c
index 1c7003d7de43..e72c97a0d6c1 100644
--- a/drivers/net/wireless/libertas/scan.c
+++ b/drivers/net/wireless/libertas/scan.c
@@ -4,22 +4,13 @@
   * 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 "assoc.h"
 #include "cmd.h"
 
 //! Approximate amount of data needed to pass a scan result back to iwlist
@@ -110,69 +101,6 @@ int lbs_ssid_cmp(uint8_t *ssid1, uint8_t ssid1_len, uint8_t *ssid2,
 	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)
 {
@@ -185,78 +113,6 @@ static inline int is_same_network(struct bss_descriptor *src,
 		!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;
-}
 
 
 
@@ -341,7 +197,6 @@ static int lbs_scan_create_channel_list(struct lbs_private *priv,
 	return chanidx;
 }
 
-
 /*
  * Add SSID TLV of the form:
  *
@@ -359,7 +214,6 @@ static int lbs_scan_add_ssid_tlv(struct lbs_private *priv, u8 *tlv)
 	return sizeof(ssid_tlv->header) + priv->scan_ssid_len;
 }
 
-
 /*
  * Add CHANLIST TLV of the form
  *
@@ -398,7 +252,6 @@ static int lbs_scan_add_chanlist_tlv(uint8_t *tlv,
 	return sizeof(chan_tlv->header) + size;
 }
 
-
 /*
  * Add RATES TLV of the form
  *
@@ -433,7 +286,6 @@ static int lbs_scan_add_rates_tlv(uint8_t *tlv)
 	return sizeof(rate_tlv->header) + i;
 }
 
-
 /*
  * Generate the CMD_802_11_SCAN command with the proper tlv
  * for a bunch of channels.
@@ -482,12 +334,9 @@ out:
 	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
@@ -497,7 +346,7 @@ out:
  *
  *  @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;
@@ -627,9 +476,6 @@ out:
 	return ret;
 }
 
-
-
-
 void lbs_scan_worker(struct work_struct *work)
 {
 	struct lbs_private *priv =
@@ -881,214 +727,6 @@ done:
 }
 
 /**
- *  @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)
-{
-	u32 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
  *
  *  Used in association code and from debugfs