if_ath_tx.h revision 227346
1/*- 2 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 * 29 * $FreeBSD: head/sys/dev/ath/if_ath_tx.h 227346 2011-11-08 18:10:04Z adrian $ 30 */ 31#ifndef __IF_ATH_TX_H__ 32#define __IF_ATH_TX_H__ 33 34/* 35 * How 'busy' to try and keep the hardware txq 36 */ 37#define ATH_AGGR_MIN_QDEPTH 2 38 39/* 40 * Watermark for scheduling TIDs in order to maximise aggregation. 41 * 42 * If hwq_depth is greater than this, don't schedule the TID 43 * for packet scheduling - the hardware is already busy servicing 44 * this TID. 45 * 46 * If hwq_depth is less than this, schedule the TID for packet 47 * scheduling in the completion handler. 48 */ 49#define ATH_AGGR_SCHED_HIGH 4 50#define ATH_AGGR_SCHED_LOW 2 51 52extern void ath_freetx(struct mbuf *m); 53extern void ath_txfrag_cleanup(struct ath_softc *sc, ath_bufhead *frags, 54 struct ieee80211_node *ni); 55extern int ath_txfrag_setup(struct ath_softc *sc, ath_bufhead *frags, 56 struct mbuf *m0, struct ieee80211_node *ni); 57extern int ath_tx_start(struct ath_softc *sc, struct ieee80211_node *ni, 58 struct ath_buf *bf, struct mbuf *m0); 59extern int ath_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 60 const struct ieee80211_bpf_params *params); 61 62#endif 63