samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

qcacmn: Fix channel info in radiotap

Browse Source 
Fix frequency and channel flags fields in radiotap API

Change-Id: Ic991ea796d0b19f8adc16a5bc33cfde0042c167e
CRs-fixed: 2189914
This commit is contained in:
sumedh baikady
2018-02-20 14:55:27 -08:00
committed by nshrivas
parent 4d3daf5cf0
commit b882f93dbc
3 changed files with 61 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
qdf/linux/src/qdf_nbuf.c
View File

@@ -80,6 +80,25 @@
#define RADIOTAP_VHT_BW_80 4
#define RADIOTAP_VHT_BW_160 11
/* channel number to freq conversion */
#define CHANNEL_NUM_14 14
#define CHANNEL_NUM_15 15
#define CHANNEL_NUM_27 27
#define CHANNEL_NUM_35 35
#define CHANNEL_NUM_182 182
#define CHANNEL_NUM_197 197
#define CHANNEL_FREQ_2484 2484
#define CHANNEL_FREQ_2407 2407
#define CHANNEL_FREQ_2512 2512
#define CHANNEL_FREQ_5000 5000
#define CHANNEL_FREQ_4000 4000
#define FREQ_MULTIPLIER_CONST_5MHZ 5
#define FREQ_MULTIPLIER_CONST_20MHZ 20
#define RADIOTAP_5G_SPECTRUM_CHANNEL 0x0100
#define RADIOTAP_2G_SPECTRUM_CHANNEL 0x0080
#define RADIOTAP_CCK_CHANNEL 0x0020
#define RADIOTAP_OFDM_CHANNEL 0x0040
#ifdef CONFIG_MCL
#include <qdf_mc_timer.h>
@@ -3613,6 +3632,33 @@ qdf_nbuf_update_radiotap_he_mu_other_flags(struct mon_rx_status *rx_status,
#define IEEE80211_RADIOTAP_HE_MU 24
#define IEEE80211_RADIOTAP_HE_MU_OTHER 25
/**
* radiotap_num_to_freq() - Get frequency from chan number
* @chan_num - Input channel number
*
* Return - Channel frequency in Mhz
*/
static uint16_t radiotap_num_to_freq (uint16_t chan_num)
{
if (chan_num == CHANNEL_NUM_14)
return CHANNEL_FREQ_2484;
if (chan_num < CHANNEL_NUM_14)
return CHANNEL_FREQ_2407 +
(chan_num * FREQ_MULTIPLIER_CONST_5MHZ);
if (chan_num < CHANNEL_NUM_27)
return CHANNEL_FREQ_2512 +
((chan_num - CHANNEL_NUM_15) *
FREQ_MULTIPLIER_CONST_20MHZ);
if (chan_num > CHANNEL_NUM_182 &&
chan_num < CHANNEL_NUM_197)
return ((chan_num * FREQ_MULTIPLIER_CONST_5MHZ) +
CHANNEL_FREQ_4000);
return CHANNEL_FREQ_5000 +
(chan_num * FREQ_MULTIPLIER_CONST_5MHZ);
}
/**
* qdf_nbuf_update_radiotap() - Update radiotap header from rx_status
* @rx_status: Pointer to rx_status.
@@ -3651,9 +3697,18 @@ unsigned int qdf_nbuf_update_radiotap(struct mon_rx_status *rx_status,
/* IEEE80211_RADIOTAP_CHANNEL 2 x __le16 MHz, bitmap */
rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_CHANNEL);
rx_status->chan_freq = radiotap_num_to_freq(rx_status->chan_num);
put_unaligned_le16(rx_status->chan_freq, &rtap_buf[rtap_len]);
rtap_len += 2;
/* Channel flags. */
if (rx_status->chan_num > CHANNEL_NUM_35)
rx_status->chan_flags = RADIOTAP_5G_SPECTRUM_CHANNEL;
else
rx_status->chan_flags = RADIOTAP_2G_SPECTRUM_CHANNEL;
if (rx_status->cck_flag)
rx_status->chan_flags |= RADIOTAP_CCK_CHANNEL;
if (rx_status->ofdm_flag)
rx_status->chan_flags |= RADIOTAP_OFDM_CHANNEL;
put_unaligned_le16(rx_status->chan_flags, &rtap_buf[rtap_len]);
rtap_len += 2;