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ath10k: deduplicate bitrate to rate idx conversion 

It's possible to derive rate index from bitrate
without any additional mapping structures/logic.

This should have little to none impact on
performance since this is only done for management
frames and the previous approach wasn't
particularly optimized.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2015-03-30 09:51:56 +03:00 committed by Kalle Valo
parent 5528e03270
commit 01cebe1c50
3 changed files with 19 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/wireless/ath/ath10k/mac.c
View File

@ -104,6 +104,18 @@ u8 ath10k_mac_hw_rate_to_idx(const struct ieee80211_supported_band *sband,
return 0;
}
u8 ath10k_mac_bitrate_to_idx(const struct ieee80211_supported_band *sband,
u32 bitrate)
{
int i;
for (i = 0; i < sband->n_bitrates; i++)
if (sband->bitrates[i].bitrate == bitrate)
return i;
return 0;
}
/**********/
/* Crypto */
/**********/

3
drivers/net/wireless/ath/ath10k/mac.h
View File

@ -55,8 +55,11 @@ bool ath10k_mac_is_peer_wep_key_set(struct ath10k *ar, const u8 *addr,
u8 keyidx);
void ath10k_mac_handle_beacon(struct ath10k *ar, struct sk_buff *skb);
void ath10k_mac_handle_beacon_miss(struct ath10k *ar, u32 vdev_id);
u8 ath10k_mac_hw_rate_to_idx(const struct ieee80211_supported_band *sband,
u8 hw_rate);
u8 ath10k_mac_bitrate_to_idx(const struct ieee80211_supported_band *sband,
u32 bitrate);
static inline struct ath10k_vif *ath10k_vif_to_arvif(struct ieee80211_vif *vif)
{

62
drivers/net/wireless/ath/ath10k/wmi.c
View File

@ -1352,63 +1352,6 @@ static inline enum ieee80211_band phy_mode_to_band(u32 phy_mode)
return band;
}
static inline u8 get_rate_idx(u32 rate, enum ieee80211_band band)
{
u8 rate_idx = 0;
/* rate in Kbps */
switch (rate) {
case 1000:
rate_idx = 0;
break;
case 2000:
rate_idx = 1;
break;
case 5500:
rate_idx = 2;
break;
case 11000:
rate_idx = 3;
break;
case 6000:
rate_idx = 4;
break;
case 9000:
rate_idx = 5;
break;
case 12000:
rate_idx = 6;
break;
case 18000:
rate_idx = 7;
break;
case 24000:
rate_idx = 8;
break;
case 36000:
rate_idx = 9;
break;
case 48000:
rate_idx = 10;
break;
case 54000:
rate_idx = 11;
break;
default:
break;
}
if (band == IEEE80211_BAND_5GHZ) {
if (rate_idx > 3)
/* Omit CCK rates */
rate_idx -= 4;
else
rate_idx = 0;
}
return rate_idx;
}
/* If keys are configured, HW decrypts all frames
* with protected bit set. Mark such frames as decrypted.
*/
@ -1490,6 +1433,7 @@ int ath10k_wmi_event_mgmt_rx(struct ath10k *ar, struct sk_buff *skb)
struct wmi_mgmt_rx_ev_arg arg = {};
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_hdr *hdr;
struct ieee80211_supported_band *sband;
u32 rx_status;
u32 channel;
u32 phy_mode;
@ -1560,9 +1504,11 @@ int ath10k_wmi_event_mgmt_rx(struct ath10k *ar, struct sk_buff *skb)
if (phy_mode == MODE_11B && status->band == IEEE80211_BAND_5GHZ)
ath10k_dbg(ar, ATH10K_DBG_MGMT, "wmi mgmt rx 11b (CCK) on 5GHz\n");
sband = &ar->mac.sbands[status->band];
status->freq = ieee80211_channel_to_frequency(channel, status->band);
status->signal = snr + ATH10K_DEFAULT_NOISE_FLOOR;
status->rate_idx = get_rate_idx(rate, status->band);
status->rate_idx = ath10k_mac_bitrate_to_idx(sband, rate / 100);
hdr = (struct ieee80211_hdr *)skb->data;
fc = le16_to_cpu(hdr->frame_control);