static ssize_t write_file_ani(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
unsigned long ani;
char buf[32];
ssize_t len;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
if (kstrtoul(buf, 0, &ani))
return -EINVAL;
if (ani > 1)
return -EINVAL;
common->disable_ani = !ani;
if (common->disable_ani) {
clear_bit(ATH_OP_ANI_RUN, &common->op_flags);
ath_stop_ani(sc);
} else {
ath_check_ani(sc);
}
return count;
}
void ath_check_ani(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_beacon_config *cur_conf = &sc->cur_chan->beacon;
/*
* Check for the various conditions in which ANI has to
* be stopped.
*/
if (ah->opmode == NL80211_IFTYPE_ADHOC) {
if (!cur_conf->enable_beacon)
goto stop_ani;
} else if (ah->opmode == NL80211_IFTYPE_AP) {
if (!cur_conf->enable_beacon) {
/*
* Disable ANI only when there are no
* associated stations.
*/
if (!test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags))
goto stop_ani;
}
} else if (ah->opmode == NL80211_IFTYPE_STATION) {
if (!test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags))
goto stop_ani;
}
if (!test_bit(ATH_OP_ANI_RUN, &common->op_flags)) {
set_bit(ATH_OP_ANI_RUN, &common->op_flags);
ath_start_ani(sc);
}
return;
stop_ani:
clear_bit(ATH_OP_ANI_RUN, &common->op_flags);
ath_stop_ani(sc);
}
