2 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
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31 #ifndef __IF_ATH_TX_H__
32 #define __IF_ATH_TX_H__
37 #define INCR(_l, _sz) (_l) ++; (_l) &= ((_sz) - 1)
39 * return block-ack bitmap index given sequence and starting sequence
41 #define ATH_BA_INDEX(_st, _seq) (((_seq) - (_st)) & (IEEE80211_SEQ_RANGE - 1))
43 #define WME_BA_BMP_SIZE 64
44 #define WME_MAX_BA WME_BA_BMP_SIZE
47 * How 'busy' to try and keep the hardware txq
49 #define ATH_AGGR_MIN_QDEPTH 2
50 #define ATH_NONAGGR_MIN_QDEPTH 32
53 * Watermark for scheduling TIDs in order to maximise aggregation.
55 * If hwq_depth is greater than this, don't schedule the TID
56 * for packet scheduling - the hardware is already busy servicing
59 * If hwq_depth is less than this, schedule the TID for packet
60 * scheduling in the completion handler.
62 #define ATH_AGGR_SCHED_HIGH 4
63 #define ATH_AGGR_SCHED_LOW 2
66 * return whether a bit at index _n in bitmap _bm is set
67 * _sz is the size of the bitmap
69 #define ATH_BA_ISSET(_bm, _n) (((_n) < (WME_BA_BMP_SIZE)) && \
70 ((_bm)[(_n) >> 5] & (1 << ((_n) & 31))))
73 /* extracting the seqno from buffer seqno */
74 #define SEQNO(_a) ((_a) >> IEEE80211_SEQ_SEQ_SHIFT)
77 * Whether the current sequence number is within the
80 #define BAW_WITHIN(_start, _bawsz, _seqno) \
81 ((((_seqno) - (_start)) & 4095) < (_bawsz))
84 * Maximum aggregate size
86 #define ATH_AGGR_MAXSIZE 65530
88 extern void ath_tx_node_flush(struct ath_softc *sc, struct ath_node *an);
89 extern void ath_tx_txq_drain(struct ath_softc *sc, struct ath_txq *txq);
90 extern void ath_txfrag_cleanup(struct ath_softc *sc, ath_bufhead *frags,
91 struct ieee80211_node *ni);
92 extern int ath_txfrag_setup(struct ath_softc *sc, ath_bufhead *frags,
93 struct mbuf *m0, struct ieee80211_node *ni);
94 extern int ath_tx_start(struct ath_softc *sc, struct ieee80211_node *ni,
95 struct ath_buf *bf, struct mbuf *m0);
96 extern int ath_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
97 const struct ieee80211_bpf_params *params);
99 /* software queue stuff */
100 extern void ath_tx_swq(struct ath_softc *sc, struct ieee80211_node *ni,
101 struct ath_txq *txq, int queue_to_head, struct ath_buf *bf);
102 extern void ath_tx_tid_init(struct ath_softc *sc, struct ath_node *an);
103 extern void ath_tx_tid_hw_queue_aggr(struct ath_softc *sc, struct ath_node *an,
104 struct ath_tid *tid);
105 extern void ath_tx_tid_hw_queue_norm(struct ath_softc *sc, struct ath_node *an,
106 struct ath_tid *tid);
107 extern void ath_txq_sched(struct ath_softc *sc, struct ath_txq *txq);
108 extern void ath_tx_normal_comp(struct ath_softc *sc, struct ath_buf *bf,
110 extern void ath_tx_aggr_comp(struct ath_softc *sc, struct ath_buf *bf,
112 extern void ath_tx_addto_baw(struct ath_softc *sc, struct ath_node *an,
113 struct ath_tid *tid, struct ath_buf *bf);
114 extern struct ieee80211_tx_ampdu * ath_tx_get_tx_tid(struct ath_node *an,
116 extern void ath_tx_tid_sched(struct ath_softc *sc, struct ath_tid *tid);
118 /* TX addba handling */
119 extern int ath_addba_request(struct ieee80211_node *ni,
120 struct ieee80211_tx_ampdu *tap, int dialogtoken,
121 int baparamset, int batimeout);
122 extern int ath_addba_response(struct ieee80211_node *ni,
123 struct ieee80211_tx_ampdu *tap, int dialogtoken,
124 int code, int batimeout);
125 extern void ath_addba_stop(struct ieee80211_node *ni,
126 struct ieee80211_tx_ampdu *tap);
127 extern void ath_bar_response(struct ieee80211_node *ni,
128 struct ieee80211_tx_ampdu *tap, int status);
129 extern void ath_addba_response_timeout(struct ieee80211_node *ni,
130 struct ieee80211_tx_ampdu *tap);
133 * AP mode power save handling (of stations)
135 extern void ath_tx_node_sleep(struct ath_softc *sc, struct ath_node *an);
136 extern void ath_tx_node_wakeup(struct ath_softc *sc, struct ath_node *an);
137 extern int ath_tx_node_is_asleep(struct ath_softc *sc, struct ath_node *an);
138 extern void ath_tx_node_reassoc(struct ath_softc *sc, struct ath_node *an);
141 * Hardware queue stuff
143 extern void ath_tx_push_pending(struct ath_softc *sc, struct ath_txq *txq);
146 * Misc debugging stuff
149 extern void ath_tx_alq_post(struct ath_softc *sc, struct ath_buf *bf_first);
150 #endif /* ATH_DEBUG_ALQ */
155 #define ath_txdma_setup(_sc) \
156 (_sc)->sc_tx.xmit_setup(_sc)
157 #define ath_txdma_teardown(_sc) \
158 (_sc)->sc_tx.xmit_teardown(_sc)
159 #define ath_txq_restart_dma(_sc, _txq) \
160 (_sc)->sc_tx.xmit_dma_restart((_sc), (_txq))
161 #define ath_tx_handoff(_sc, _txq, _bf) \
162 (_sc)->sc_tx.xmit_handoff((_sc), (_txq), (_bf))
163 #define ath_draintxq(_sc, _rtype) \
164 (_sc)->sc_tx.xmit_drain((_sc), (_rtype))
166 extern void ath_xmit_setup_legacy(struct ath_softc *sc);