core/dp/txrx/ol_rx_reorder.h

/*
 * Copyright (c) 2011, 2014-2015 The Linux Foundation. All rights reserved.
 *
 * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
 *
 *
 * Permission to use, copy, modify, and/or distribute this software for
 * any purpose with or without fee is hereby granted, provided that the
 * above copyright notice and this permission notice appear in all
 * copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * This file was originally distributed by Qualcomm Atheros, Inc.
 * under proprietary terms before Copyright ownership was assigned
 * to the Linux Foundation.
 */

#ifndef _OL_RX_REORDER__H_
#define _OL_RX_REORDER__H_

#include <cdf_nbuf.h>           /* cdf_nbuf_t, etc. */

#include <ol_txrx_api.h>        /* ol_txrx_peer_t, etc. */

#include <ol_txrx_types.h>      /* ol_rx_reorder_t */

void
ol_rx_reorder_store(struct ol_txrx_pdev_t *pdev,
		    struct ol_txrx_peer_t *peer,
		    unsigned tid,
		    unsigned reorder_array_index,
		    cdf_nbuf_t head_msdu, cdf_nbuf_t tail_msdu);

void
ol_rx_reorder_release(struct ol_txrx_vdev_t *vdev,
		      struct ol_txrx_peer_t *peer,
		      unsigned tid,
		      unsigned seq_num_start, unsigned seq_num_end);

void
ol_rx_reorder_flush(struct ol_txrx_vdev_t *vdev,
		    struct ol_txrx_peer_t *peer,
		    unsigned tid,
		    unsigned seq_num_start,
		    unsigned seq_num_end, enum htt_rx_flush_action action);

/**
 * @brief - find end of first range of present MPDUs after the initial rx hole
 * @param[in] peer - which sender's data is being checked
 * @param[in] tid - which type of data is being checked
 * @param[out] idx_end - the reorder array index holding the last MPDU in the
 *      range of in-order MPDUs that following the initial hole.
 *      Note that this is the index of the last in-order MPDU following the
 *      first hole, rather than the starting index of the second hole.
 */
void
ol_rx_reorder_first_hole(struct ol_txrx_peer_t *peer,
			 unsigned tid, unsigned *idx_end);

void
ol_rx_reorder_peer_cleanup(struct ol_txrx_vdev_t *vdev,
			   struct ol_txrx_peer_t *peer);

void ol_rx_reorder_init(struct ol_rx_reorder_t *rx_reorder, uint8_t tid);

enum htt_rx_status
ol_rx_seq_num_check(struct ol_txrx_pdev_t *pdev,
			    struct ol_txrx_peer_t *peer,
			    uint8_t tid, void *rx_mpdu_desc);

/*
 * Peregrine and Rome: do sequence number checking in the host
 * for peer-TIDs without aggregation enabled
 */

#define OL_RX_SEQ_NUM_CHECK(pdev, peer, tid, rx_mpdu_desc)	\
	(pdev->rx.flags.dup_check && peer->tids_rx_reorder[tid].win_sz_mask == 0) ? \
		ol_rx_seq_num_check( \
		pdev, peer, tid, \
		rx_mpdu_desc) : \
		htt_rx_status_ok

#endif /* _OL_RX_REORDER__H_ */