diff options
Diffstat (limited to 'net/mac80211/ieee80211_i.h')
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 432011cd3647..884be4d100f1 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -853,7 +853,29 @@ u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, /* ieee80211_ioctl.c */ extern const struct iw_handler_def ieee80211_iw_handler_def; -int ieee80211_set_freq(struct ieee80211_local *local, int freq); + +/* Least common multiple of the used rates (in 100 kbps). This is used to + * calculate rate_inv values for each rate so that only integers are needed. */ +#define CHAN_UTIL_RATE_LCM 95040 +/* 1 usec is 1/8 * (95040/10) = 1188 */ +#define CHAN_UTIL_PER_USEC 1188 +/* Amount of bits to shift the result right to scale the total utilization + * to values that will not wrap around 32-bit integers. */ +#define CHAN_UTIL_SHIFT 9 +/* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1): + * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the + * raw value with about 23 should give utilization in 10th of a percentage + * (1/1000). However, utilization is only estimated and not all intervals + * between frames etc. are calculated. 18 seems to give numbers that are closer + * to the real maximum. */ +#define CHAN_UTIL_PER_10MS 18 +#define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC) +#define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC) + + +/* ieee80211_ioctl.c */ +int ieee80211_set_freq(struct net_device *dev, int freq); + /* ieee80211_sta.c */ void ieee80211_sta_timer(unsigned long data); void ieee80211_sta_work(struct work_struct *work); |