130 lines
4.8 KiB
C
130 lines
4.8 KiB
C
/*
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*
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// ISC License (ISC)
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//
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// Copyright (c) 2004-2010, The Linux Foundation
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// All rights reserved.
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// Software was previously licensed under ISC license by Qualcomm Atheros, Inc.
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*
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*
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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//
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*
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*/
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#ifndef __AGGR_RX_INTERNAL_H__
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#define __AGGR_RX_INTERNAL_H__
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#include "a_osapi.h"
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#include "aggr_recv_api.h"
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//#define AGGR_DEBUG
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#define AGGR_WIN_IDX(x, y) ((x) % (y))
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#define AGGR_INCR_IDX(x, y) AGGR_WIN_IDX(((x)+1), (y))
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#define AGGR_DCRM_IDX(x, y) AGGR_WIN_IDX(((x)-1), (y))
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#define IEEE80211_MAX_SEQ_NO 0xFFF
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#define IEEE80211_NEXT_SEQ_NO(x) (((x) + 1) & IEEE80211_MAX_SEQ_NO)
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#define NUM_OF_TIDS 8
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#define AGGR_SZ_DEFAULT 8
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#define AGGR_WIN_SZ_MIN 2
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#define AGGR_WIN_SZ_MAX 8
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/* TID Window sz is double of what is negotiated. Derive TID_WINDOW_SZ from win_sz, per tid */
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#define TID_WINDOW_SZ(_x) ((_x) << 1)
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#define AGGR_NUM_OF_FREE_NETBUFS 16
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#define AGGR_GET_RXTID_STATS(_p, _x) (&(_p->stat[(_x)]))
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#define AGGR_GET_RXTID(_p, _x) (&(_p->RxTid[(_x)]))
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/* Hold q is a function of win_sz, which is negotiated per tid */
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#define HOLD_Q_SZ(_x) (TID_WINDOW_SZ((_x))*sizeof(OSBUF_HOLD_Q))
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/* AGGR_RX_TIMEOUT value is important as a (too) small value can cause frames to be
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* delivered out of order and a (too) large value can cause undesirable latency in
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* certain situations. */
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#define AGGR_RX_TIMEOUT 400 /* Timeout(in ms) for delivery of frames, if they are stuck */
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typedef enum {
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ALL_SEQNO = 0,
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CONTIGUOUS_SEQNO = 1,
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}DELIVERY_ORDER;
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typedef struct {
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void *osbuf;
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A_BOOL is_amsdu;
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A_UINT16 seq_no;
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}OSBUF_HOLD_Q;
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#if 0
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typedef struct {
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A_UINT16 seqno_st;
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A_UINT16 seqno_end;
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}WINDOW_SNAPSHOT;
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#endif
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typedef struct {
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A_BOOL aggr; /* is it ON or OFF */
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A_BOOL progress; /* TRUE when frames have arrived after a timer start */
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A_BOOL timerMon; /* TRUE if the timer started for the sake of this TID */
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A_UINT16 win_sz; /* negotiated window size */
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A_UINT16 seq_next; /* Next seq no, in current window */
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A_UINT32 hold_q_sz; /* Num of frames that can be held in hold q */
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OSBUF_HOLD_Q *hold_q; /* Hold q for re-order */
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#if 0
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WINDOW_SNAPSHOT old_win; /* Sliding window snapshot - for timeout */
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#endif
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A_NETBUF_QUEUE_T q; /* q head for enqueuing frames for dispatch */
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A_MUTEX_T lock;
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A_BOOL bIsDelbaSent; /* is it ON or OFF */
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}RXTID;
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typedef struct {
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A_UINT32 num_into_aggr; /* hitting at the input of this module */
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A_UINT32 num_dups; /* duplicate */
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A_UINT32 num_oow; /* out of window */
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A_UINT32 num_mpdu; /* single payload 802.3/802.11 frame */
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A_UINT32 num_amsdu; /* AMSDU */
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A_UINT32 num_delivered; /* frames delivered to IP stack */
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A_UINT32 num_timeouts; /* num of timeouts, during which frames delivered */
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A_UINT32 num_hole; /* frame not present, when window moved over */
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A_UINT32 num_bar; /* num of resets of seq_num, via BAR */
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}RXTID_STATS;
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typedef struct {
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void *dev; /* dev handle */
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A_UINT8 aggr_sz; /* config value of aggregation size */
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A_UINT8 timerScheduled;
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A_TIMER timer; /* timer for returning held up pkts in re-order que */
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RXTID RxTid[NUM_OF_TIDS]; /* Per tid window */
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#ifdef AGGR_DEBUG
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RXTID_STATS stat[NUM_OF_TIDS]; /* Tid based statistics */
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#endif
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}AGGR_CONN_INFO;
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typedef struct {
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RX_CALLBACK rx_fn; /* callback function to return frames; to upper layer */
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ALLOC_NETBUFS netbuf_allocator; /* OS netbuf alloc fn */
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A_NETBUF_QUEUE_T freeQ; /* pre-allocated buffers - for A_MSDU slicing */
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#ifdef AGGR_DEBUG
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PACKET_LOG pkt_log; /* Log info of the packets */
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#endif
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}AGGR_INFO;
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#endif /* __AGGR_RX_INTERNAL_H__ */
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