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authorJohn W. Linville <linville@tuxdriver.com>2008-09-24 18:13:14 -0400
committerJohn W. Linville <linville@tuxdriver.com>2008-10-31 19:00:46 -0400
commit7e272fcff6f0a32a3d46e600ea5895f6058f4e2d (patch)
tree39857028913862af4d71170d1f16ee360ba49115 /drivers/net/wireless/iwlwifi/iwl-scan.c
parentddf4ac53fb8a12a027c0486db743ae040f45b56a (diff)
wireless: consolidate on a single escape_essid implementation
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-scan.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-scan.c52
1 files changed, 6 insertions, 46 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c
index 86b74571b513..1cc8aa592821 100644
--- a/drivers/net/wireless/iwlwifi/iwl-scan.c
+++ b/drivers/net/wireless/iwlwifi/iwl-scan.c
@@ -25,8 +25,10 @@
25 * Tomas Winkler <tomas.winkler@intel.com> 25 * Tomas Winkler <tomas.winkler@intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *****************************************************************************/ 27 *****************************************************************************/
28#include <net/mac80211.h> 28#include <linux/types.h>
29#include <linux/etherdevice.h> 29#include <linux/etherdevice.h>
30#include <net/lib80211.h>
31#include <net/mac80211.h>
30 32
31#include "iwl-eeprom.h" 33#include "iwl-eeprom.h"
32#include "iwl-dev.h" 34#include "iwl-dev.h"
@@ -64,48 +66,6 @@
64#define IWL_SCAN_PROBE_MASK(n) cpu_to_le32((BIT(n) | (BIT(n) - BIT(1)))) 66#define IWL_SCAN_PROBE_MASK(n) cpu_to_le32((BIT(n) | (BIT(n) - BIT(1))))
65 67
66 68
67static int iwl_is_empty_essid(const char *essid, int essid_len)
68{
69 /* Single white space is for Linksys APs */
70 if (essid_len == 1 && essid[0] == ' ')
71 return 1;
72
73 /* Otherwise, if the entire essid is 0, we assume it is hidden */
74 while (essid_len) {
75 essid_len--;
76 if (essid[essid_len] != '\0')
77 return 0;
78 }
79
80 return 1;
81}
82
83
84
85static const char *iwl_escape_essid(const char *essid, u8 essid_len)
86{
87 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
88 const char *s = essid;
89 char *d = escaped;
90
91 if (iwl_is_empty_essid(essid, essid_len)) {
92 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
93 return escaped;
94 }
95
96 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
97 while (essid_len--) {
98 if (*s == '\0') {
99 *d++ = '\\';
100 *d++ = '0';
101 s++;
102 } else
103 *d++ = *s++;
104 }
105 *d = '\0';
106 return escaped;
107}
108
109/** 69/**
110 * iwl_scan_cancel - Cancel any currently executing HW scan 70 * iwl_scan_cancel - Cancel any currently executing HW scan
111 * 71 *
@@ -775,8 +735,8 @@ static void iwl_bg_request_scan(struct work_struct *data)
775 /* We should add the ability for user to lock to PASSIVE ONLY */ 735 /* We should add the ability for user to lock to PASSIVE ONLY */
776 if (priv->one_direct_scan) { 736 if (priv->one_direct_scan) {
777 IWL_DEBUG_SCAN("Start direct scan for '%s'\n", 737 IWL_DEBUG_SCAN("Start direct scan for '%s'\n",
778 iwl_escape_essid(priv->direct_ssid, 738 escape_ssid(priv->direct_ssid,
779 priv->direct_ssid_len)); 739 priv->direct_ssid_len));
780 scan->direct_scan[0].id = WLAN_EID_SSID; 740 scan->direct_scan[0].id = WLAN_EID_SSID;
781 scan->direct_scan[0].len = priv->direct_ssid_len; 741 scan->direct_scan[0].len = priv->direct_ssid_len;
782 memcpy(scan->direct_scan[0].ssid, 742 memcpy(scan->direct_scan[0].ssid,
@@ -784,7 +744,7 @@ static void iwl_bg_request_scan(struct work_struct *data)
784 n_probes++; 744 n_probes++;
785 } else if (!iwl_is_associated(priv) && priv->essid_len) { 745 } else if (!iwl_is_associated(priv) && priv->essid_len) {
786 IWL_DEBUG_SCAN("Start direct scan for '%s' (not associated)\n", 746 IWL_DEBUG_SCAN("Start direct scan for '%s' (not associated)\n",
787 iwl_escape_essid(priv->essid, priv->essid_len)); 747 escape_ssid(priv->essid, priv->essid_len));
788 scan->direct_scan[0].id = WLAN_EID_SSID; 748 scan->direct_scan[0].id = WLAN_EID_SSID;
789 scan->direct_scan[0].len = priv->essid_len; 749 scan->direct_scan[0].len = priv->essid_len;
790 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len); 750 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);