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path: root/drivers/net/wireless/iwlwifi/iwl4965-base.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl4965-base.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl4965-base.c52
1 files changed, 30 insertions, 22 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index b1a6e39f7821..5e1279263b22 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -48,8 +48,6 @@
48#include <linux/netdevice.h> 48#include <linux/netdevice.h>
49#include <linux/wireless.h> 49#include <linux/wireless.h>
50#include <linux/firmware.h> 50#include <linux/firmware.h>
51#include <linux/skbuff.h>
52#include <linux/netdevice.h>
53#include <linux/etherdevice.h> 51#include <linux/etherdevice.h>
54#include <linux/if_arp.h> 52#include <linux/if_arp.h>
55 53
@@ -1802,21 +1800,22 @@ static void iwl_unset_hw_setting(struct iwl_priv *priv)
1802 * return : set the bit for each supported rate insert in ie 1800 * return : set the bit for each supported rate insert in ie
1803 */ 1801 */
1804static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate, 1802static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1805 u16 basic_rate, int max_count) 1803 u16 basic_rate, int *left)
1806{ 1804{
1807 u16 ret_rates = 0, bit; 1805 u16 ret_rates = 0, bit;
1808 int i; 1806 int i;
1809 u8 *rates; 1807 u8 *cnt = ie;
1810 1808 u8 *rates = ie + 1;
1811 rates = &(ie[1]);
1812 1809
1813 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) { 1810 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1814 if (bit & supported_rate) { 1811 if (bit & supported_rate) {
1815 ret_rates |= bit; 1812 ret_rates |= bit;
1816 rates[*ie] = iwl_rates[i].ieee | 1813 rates[*cnt] = iwl_rates[i].ieee |
1817 ((bit & basic_rate) ? 0x80 : 0x00); 1814 ((bit & basic_rate) ? 0x80 : 0x00);
1818 *ie = *ie + 1; 1815 (*cnt)++;
1819 if (*ie >= max_count) 1816 (*left)--;
1817 if ((*left <= 0) ||
1818 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1820 break; 1819 break;
1821 } 1820 }
1822 } 1821 }
@@ -1839,7 +1838,7 @@ static u16 iwl_fill_probe_req(struct iwl_priv *priv,
1839{ 1838{
1840 int len = 0; 1839 int len = 0;
1841 u8 *pos = NULL; 1840 u8 *pos = NULL;
1842 u16 ret_rates; 1841 u16 active_rates, ret_rates, cck_rates;
1843 1842
1844 /* Make sure there is enough space for the probe request, 1843 /* Make sure there is enough space for the probe request,
1845 * two mandatory IEs and the data */ 1844 * two mandatory IEs and the data */
@@ -1884,19 +1883,27 @@ static u16 iwl_fill_probe_req(struct iwl_priv *priv,
1884 left -= 2; 1883 left -= 2;
1885 if (left < 0) 1884 if (left < 0)
1886 return 0; 1885 return 0;
1886
1887 /* ... fill it in... */ 1887 /* ... fill it in... */
1888 *pos++ = WLAN_EID_SUPP_RATES; 1888 *pos++ = WLAN_EID_SUPP_RATES;
1889 *pos = 0; 1889 *pos = 0;
1890 ret_rates = priv->active_rate = priv->rates_mask; 1890
1891 priv->active_rate = priv->rates_mask;
1892 active_rates = priv->active_rate;
1891 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK; 1893 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1892 1894
1893 iwl_supported_rate_to_ie(pos, priv->active_rate, 1895 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1894 priv->active_rate_basic, left); 1896 ret_rates = iwl_supported_rate_to_ie(pos, cck_rates,
1897 priv->active_rate_basic, &left);
1898 active_rates &= ~ret_rates;
1899
1900 ret_rates = iwl_supported_rate_to_ie(pos, active_rates,
1901 priv->active_rate_basic, &left);
1902 active_rates &= ~ret_rates;
1903
1895 len += 2 + *pos; 1904 len += 2 + *pos;
1896 pos += (*pos) + 1; 1905 pos += (*pos) + 1;
1897 ret_rates = ~ret_rates & priv->active_rate; 1906 if (active_rates == 0)
1898
1899 if (ret_rates == 0)
1900 goto fill_end; 1907 goto fill_end;
1901 1908
1902 /* fill in supported extended rate */ 1909 /* fill in supported extended rate */
@@ -1907,7 +1914,8 @@ static u16 iwl_fill_probe_req(struct iwl_priv *priv,
1907 /* ... fill it in... */ 1914 /* ... fill it in... */
1908 *pos++ = WLAN_EID_EXT_SUPP_RATES; 1915 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1909 *pos = 0; 1916 *pos = 0;
1910 iwl_supported_rate_to_ie(pos, ret_rates, priv->active_rate_basic, left); 1917 iwl_supported_rate_to_ie(pos, active_rates,
1918 priv->active_rate_basic, &left);
1911 if (*pos > 0) 1919 if (*pos > 0)
1912 len += 2 + *pos; 1920 len += 2 + *pos;
1913 1921
@@ -4494,13 +4502,13 @@ static u8 ratio2dB[100] = {
4494 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */ 4502 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4495int iwl_calc_db_from_ratio(int sig_ratio) 4503int iwl_calc_db_from_ratio(int sig_ratio)
4496{ 4504{
4497 /* Anything above 1000:1 just report as 60 dB */ 4505 /* 1000:1 or higher just report as 60 dB */
4498 if (sig_ratio > 1000) 4506 if (sig_ratio >= 1000)
4499 return 60; 4507 return 60;
4500 4508
4501 /* Above 100:1, divide by 10 and use table, 4509 /* 100:1 or higher, divide by 10 and use table,
4502 * add 20 dB to make up for divide by 10 */ 4510 * add 20 dB to make up for divide by 10 */
4503 if (sig_ratio > 100) 4511 if (sig_ratio >= 100)
4504 return (20 + (int)ratio2dB[sig_ratio/10]); 4512 return (20 + (int)ratio2dB[sig_ratio/10]);
4505 4513
4506 /* We shouldn't see this */ 4514 /* We shouldn't see this */