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wl1271: Add TSF handling

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Add functionality to pass the current TSF (mac time) to the mac80211. This is
needed for ad-hoc merging.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Juuso Oikarinen 2010-07-08 17:49:57 +03:00 committed by John W. Linville
parent ab2807efcf
commit bbbb538e33
4 changed files with 65 additions and 6 deletions
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26
drivers/net/wireless/wl12xx/wl1271_acx.c
View File

@ -1266,3 +1266,29 @@ out:
kfree(acx); kfree(acx);
return ret; return ret;
} }
int wl1271_acx_tsf_info(struct wl1271 *wl, u64 *mactime)
{
struct wl1271_acx_fw_tsf_information *tsf_info;
int ret;
tsf_info = kzalloc(sizeof(*tsf_info), GFP_KERNEL);
if (!tsf_info) {
ret = -ENOMEM;
goto out;
}
ret = wl1271_cmd_interrogate(wl, ACX_TSF_INFO,
tsf_info, sizeof(*tsf_info));
if (ret < 0) {
wl1271_warning("acx tsf info interrogate failed");
goto out;
}
*mactime = le32_to_cpu(tsf_info->current_tsf_low) |
((u64) le32_to_cpu(tsf_info->current_tsf_high) << 32);
out:
kfree(tsf_info);
return ret;
}

12
drivers/net/wireless/wl12xx/wl1271_acx.h
View File

@ -993,6 +993,17 @@ struct wl1271_acx_rssi_snr_avg_weights {
u8 snr_data; u8 snr_data;
}; };
struct wl1271_acx_fw_tsf_information {
struct acx_header header;
__le32 current_tsf_high;
__le32 current_tsf_low;
__le32 last_bttt_high;
__le32 last_tbtt_low;
u8 last_dtim_count;
u8 padding[3];
} __attribute__ ((packed));
enum { enum {
ACX_WAKE_UP_CONDITIONS = 0x0002, ACX_WAKE_UP_CONDITIONS = 0x0002,
ACX_MEM_CFG = 0x0003, ACX_MEM_CFG = 0x0003,
@ -1114,5 +1125,6 @@ int wl1271_acx_keep_alive_config(struct wl1271 *wl, u8 index, u8 tpl_valid);
int wl1271_acx_rssi_snr_trigger(struct wl1271 *wl, bool enable, int wl1271_acx_rssi_snr_trigger(struct wl1271 *wl, bool enable,
s16 thold, u8 hyst); s16 thold, u8 hyst);
int wl1271_acx_rssi_snr_avg_weights(struct wl1271 *wl); int wl1271_acx_rssi_snr_avg_weights(struct wl1271 *wl);
int wl1271_acx_tsf_info(struct wl1271 *wl, u64 *mactime);
#endif /* __WL1271_ACX_H__ */ #endif /* __WL1271_ACX_H__ */

27
drivers/net/wireless/wl12xx/wl1271_main.c
View File

@ -1966,6 +1966,32 @@ out:
return ret; return ret;
} }
static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw)
{
struct wl1271 *wl = hw->priv;
u64 mactime = ULLONG_MAX;
int ret;
wl1271_debug(DEBUG_MAC80211, "mac80211 get tsf");
mutex_lock(&wl->mutex);
ret = wl1271_ps_elp_wakeup(wl, false);
if (ret < 0)
goto out;
ret = wl1271_acx_tsf_info(wl, &mactime);
if (ret < 0)
goto out_sleep;
out_sleep:
wl1271_ps_elp_sleep(wl);
out:
mutex_unlock(&wl->mutex);
return mactime;
}
/* can't be const, mac80211 writes to this */ /* can't be const, mac80211 writes to this */
static struct ieee80211_rate wl1271_rates[] = { static struct ieee80211_rate wl1271_rates[] = {
@ -2195,6 +2221,7 @@ static const struct ieee80211_ops wl1271_ops = {
.bss_info_changed = wl1271_op_bss_info_changed, .bss_info_changed = wl1271_op_bss_info_changed,
.set_rts_threshold = wl1271_op_set_rts_threshold, .set_rts_threshold = wl1271_op_set_rts_threshold,
.conf_tx = wl1271_op_conf_tx, .conf_tx = wl1271_op_conf_tx,
.get_tsf = wl1271_op_get_tsf,
CFG80211_TESTMODE_CMD(wl1271_tm_cmd) CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
}; };

6
drivers/net/wireless/wl12xx/wl1271_rx.c
View File

@ -53,12 +53,6 @@ static void wl1271_rx_status(struct wl1271 *wl,
status->band = wl->band; status->band = wl->band;
status->rate_idx = wl1271_rate_to_idx(wl, desc->rate); status->rate_idx = wl1271_rate_to_idx(wl, desc->rate);
/*
* FIXME: Add mactime handling. For IBSS (ad-hoc) we need to get the
* timestamp from the beacon (acx_tsf_info). In BSS mode (infra) we
* only need the mactime for monitor mode. For now the mactime is
* not valid, so RX_FLAG_TSFT should not be set
*/
status->signal = desc->rssi; status->signal = desc->rssi;
status->freq = ieee80211_channel_to_frequency(desc->channel); status->freq = ieee80211_channel_to_frequency(desc->channel);