diff options
Diffstat (limited to 'sys/net80211/ieee80211_ht.h')
| -rw-r--r-- | sys/net80211/ieee80211_ht.h | 84 |
1 files changed, 78 insertions, 6 deletions
diff --git a/sys/net80211/ieee80211_ht.h b/sys/net80211/ieee80211_ht.h index d1d6699..80052cf 100644 --- a/sys/net80211/ieee80211_ht.h +++ b/sys/net80211/ieee80211_ht.h @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2007 Sam Leffler, Errno Consulting + * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -46,13 +46,16 @@ struct ieee80211_tx_ampdu { #define IEEE80211_AGGR_NAK 0x0010 /* peer NAK'd ADDBA request */ uint8_t txa_ac; uint8_t txa_token; /* dialog token */ + int txa_lastsample; /* ticks @ last traffic sample */ + int txa_pkts; /* packets over last sample interval */ + int txa_avgpps; /* filtered traffic over window */ int txa_qbytes; /* data queued (bytes) */ short txa_qframes; /* data queued (frames) */ ieee80211_seq txa_seqstart; ieee80211_seq txa_start; uint16_t txa_wnd; /* BA window size */ - uint8_t txa_attempts; /* # setup attempts */ - int txa_lastrequest;/* time of last ADDBA request */ + uint8_t txa_attempts; /* # ADDBA requests w/o a response */ + int txa_nextrequest;/* soonest to make next ADDBA request */ struct ifqueue txa_q; /* packet queue */ struct callout txa_timer; void *txa_private; /* driver-private storage */ @@ -67,6 +70,65 @@ struct ieee80211_tx_ampdu { (((tap)->txa_flags & \ (IEEE80211_AGGR_RUNNING|IEEE80211_AGGR_XCHGPEND|IEEE80211_AGGR_NAK)) != 0) +/* + * Traffic estimator support. We estimate packets/sec for + * each AC that is setup for AMPDU or will potentially be + * setup for AMPDU. The traffic rate can be used to decide + * when AMPDU should be setup (according to a threshold) + * and is available for drivers to do things like cache + * eviction when only a limited number of BA streams are + * available and more streams are requested than available. + */ + +static void __inline +ieee80211_txampdu_update_pps(struct ieee80211_tx_ampdu *tap) +{ + /* NB: scale factor of 2 was picked heuristically */ + tap->txa_avgpps = ((tap->txa_avgpps << 2) - + tap->txa_avgpps + tap->txa_pkts) >> 2; +} + +/* + * Count a packet towards the pps estimate. + */ +static void __inline +ieee80211_txampdu_count_packet(struct ieee80211_tx_ampdu *tap) +{ + /* XXX bound loop/do more crude estimate? */ + while (ticks - tap->txa_lastsample >= hz) { + ieee80211_txampdu_update_pps(tap); + /* reset to start new sample interval */ + tap->txa_pkts = 0; + if (tap->txa_avgpps == 0) { + tap->txa_lastsample = ticks; + break; + } + tap->txa_lastsample += hz; + } + tap->txa_pkts++; +} + +/* + * Get the current pps estimate. If the average is out of + * date due to lack of traffic then we decay the estimate + * to account for the idle time. + */ +static int __inline +ieee80211_txampdu_getpps(struct ieee80211_tx_ampdu *tap) +{ + /* XXX bound loop/do more crude estimate? */ + while (ticks - tap->txa_lastsample >= hz) { + ieee80211_txampdu_update_pps(tap); + tap->txa_pkts = 0; + if (tap->txa_avgpps == 0) { + tap->txa_lastsample = ticks; + break; + } + tap->txa_lastsample += hz; + } + return tap->txa_avgpps; +} + struct ieee80211_rx_ampdu { int rxa_flags; int rxa_qbytes; /* data queued (bytes) */ @@ -81,10 +143,18 @@ struct ieee80211_rx_ampdu { void ieee80211_ht_attach(struct ieee80211com *); void ieee80211_ht_detach(struct ieee80211com *); +void ieee80211_ht_vattach(struct ieee80211vap *); +void ieee80211_ht_vdetach(struct ieee80211vap *); void ieee80211_ht_announce(struct ieee80211com *); -extern const int ieee80211_htrates[16]; +struct ieee80211_mcs_rates { + uint16_t ht20_rate_800ns; + uint16_t ht20_rate_400ns; + uint16_t ht40_rate_800ns; + uint16_t ht40_rate_400ns; +}; +extern const struct ieee80211_mcs_rates ieee80211_htrates[16]; const struct ieee80211_htrateset *ieee80211_get_suphtrates( struct ieee80211com *, const struct ieee80211_channel *); @@ -98,12 +168,14 @@ int ieee80211_ampdu_reorder(struct ieee80211_node *, struct mbuf *); void ieee80211_recv_bar(struct ieee80211_node *, struct mbuf *); void ieee80211_ht_node_init(struct ieee80211_node *, const uint8_t *); void ieee80211_ht_node_cleanup(struct ieee80211_node *); +void ieee80211_ht_node_age(struct ieee80211_node *); + struct ieee80211_channel *ieee80211_ht_adjust_channel(struct ieee80211com *, struct ieee80211_channel *, int); void ieee80211_ht_wds_init(struct ieee80211_node *); void ieee80211_ht_node_join(struct ieee80211_node *); void ieee80211_ht_node_leave(struct ieee80211_node *); -void ieee80211_htinfo_update(struct ieee80211com *, int protmode); +void ieee80211_htprot_update(struct ieee80211com *, int protmode); void ieee80211_ht_timeout(struct ieee80211com *); void ieee80211_parse_htcap(struct ieee80211_node *, const uint8_t *); void ieee80211_parse_htinfo(struct ieee80211_node *, const uint8_t *); @@ -122,6 +194,6 @@ uint8_t *ieee80211_add_htcap_vendor(uint8_t *, struct ieee80211_node *); uint8_t *ieee80211_add_htinfo(uint8_t *, struct ieee80211_node *); uint8_t *ieee80211_add_htinfo_vendor(uint8_t *, struct ieee80211_node *); struct ieee80211_beacon_offsets; -void ieee80211_ht_update_beacon(struct ieee80211com *, +void ieee80211_ht_update_beacon(struct ieee80211vap *, struct ieee80211_beacon_offsets *); #endif /* _NET80211_IEEE80211_HT_H_ */ |
