c9cec76270
Avoid per packet Rx refill buff pool lock, instead acquire/release lock for burst of nbuf's replenishment. Change-Id: I778cb9702d31d4b8911cca4e7f06f12c50ef6df9 CRs-Fixed: 2884208
244 rader
6.3 KiB
C
244 rader
6.3 KiB
C
/*
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* Copyright (c) 2020-2021 The Linux Foundation. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for
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* any purpose with or without fee is hereby granted, provided that the
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* above copyright notice and this permission notice appear in all
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* copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _DP_RX_BUFFER_POOL_H_
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#define _DP_RX_BUFFER_POOL_H_
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#include "dp_types.h"
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#include "qdf_nbuf.h"
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#include "qdf_module.h"
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#include "athdefs.h"
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#include "wlan_cfg.h"
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#include "dp_internal.h"
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#include "dp_rx.h"
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#include "dp_rx_mon.h"
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#ifdef WLAN_FEATURE_RX_PREALLOC_BUFFER_POOL
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/**
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* dp_rx_buffer_pool_init() - Initialize emergency buffer pool
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* @soc: SoC handle
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* @mac_id: MAC ID
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*
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* Return: None
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*/
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void dp_rx_buffer_pool_init(struct dp_soc *soc, u8 mac_id);
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/**
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* dp_rx_buffer_pool_deinit() - De-Initialize emergency buffer pool
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* @soc: SoC handle
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* @mac_id: MAC ID
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*
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* Return: None
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*/
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void dp_rx_buffer_pool_deinit(struct dp_soc *soc, u8 mac_id);
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/**
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* dp_rx_buffer_pool_refill() - Process the rx nbuf list and
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* refill the emergency buffer pool
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* @soc: SoC handle
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* @nbuf: RX buffer
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* @mac_id: MAC ID
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*
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* Return: Whether the rx nbuf is consumed into the pool or not.
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*/
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bool dp_rx_buffer_pool_refill(struct dp_soc *soc, qdf_nbuf_t nbuf, u8 mac_id);
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/**
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* dp_rx_buffer_pool_nbuf_free() - Free the nbuf or queue it
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* back into the pool
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* @soc: SoC handle
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* @nbuf: RX buffer
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* @mac_id: MAC ID
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*
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* Return: None
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*/
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void dp_rx_buffer_pool_nbuf_free(struct dp_soc *soc, qdf_nbuf_t nbuf,
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u8 mac_id);
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/**
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* dp_rx_buffer_pool_nbuf_alloc() - Allocate nbuf for buffer replenish,
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* give nbuf from the pool if allocation fails
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* @soc: SoC handle
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* @mac_id: MAC ID
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* @rx_desc_pool: RX descriptor pool
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* @num_available_buffers: number of available buffers in the ring.
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*
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* Return: nbuf
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*/
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qdf_nbuf_t dp_rx_buffer_pool_nbuf_alloc(struct dp_soc *soc, uint32_t mac_id,
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struct rx_desc_pool *rx_desc_pool,
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uint32_t num_available_buffers);
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/**
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* dp_rx_buffer_pool_nbuf_map() - Map nbuff for buffer replenish
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* @soc: SoC handle
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* @rx_desc_pool: RX descriptor pool
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* @nbuf_frag_info_t: nbuf frag info
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*
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* Return: nbuf
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*/
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QDF_STATUS
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dp_rx_buffer_pool_nbuf_map(struct dp_soc *soc,
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struct rx_desc_pool *rx_desc_pool,
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struct dp_rx_nbuf_frag_info *nbuf_frag_info_t);
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/**
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* dp_rx_schedule_refill_thread() - Schedule RX refill thread to enqueue
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* buffers in refill pool
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* @soc: SoC handle
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*
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*/
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static inline void dp_rx_schedule_refill_thread(struct dp_soc *soc)
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{
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if (soc->cdp_soc.ol_ops->dp_rx_sched_refill_thread)
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soc->cdp_soc.ol_ops->dp_rx_sched_refill_thread(dp_soc_to_cdp_soc_t(soc));
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}
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/**
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* dp_rx_refill_buff_pool_lock() - Acquire Rx refill buff pool lock
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* @soc: SoC handle
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*
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*/
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static inline void dp_rx_refill_buff_pool_lock(struct dp_soc *soc)
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{
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struct rx_refill_buff_pool *buff_pool = &soc->rx_refill_buff_pool;
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if (buff_pool->is_initialized &&
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qdf_spin_trylock_bh(&buff_pool->bufq_lock))
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buff_pool->in_rx_refill_lock = true;
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}
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/**
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* dp_rx_refill_buff_pool_unlock() - Release Rx refill buff pool lock
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* @soc: SoC handle
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*
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*/
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static inline void dp_rx_refill_buff_pool_unlock(struct dp_soc *soc)
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{
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struct rx_refill_buff_pool *buff_pool = &soc->rx_refill_buff_pool;
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if (buff_pool->in_rx_refill_lock) {
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qdf_spin_unlock_bh(&buff_pool->bufq_lock);
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buff_pool->in_rx_refill_lock = false;
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}
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}
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#else
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/**
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* dp_rx_buffer_pool_init() - Initialize emergency buffer pool
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* @soc: SoC handle
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* @mac_id: MAC ID
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*
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* Return: None
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*/
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static inline
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void dp_rx_buffer_pool_init(struct dp_soc *soc, u8 mac_id)
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{
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soc->rx_buff_pool[mac_id].is_initialized = false;
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}
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/**
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* dp_rx_buffer_pool_deinit() - De-Initialize emergency buffer pool
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* @soc: SoC handle
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* @mac_id: MAC ID
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*
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* Return: None
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*/
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static inline
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void dp_rx_buffer_pool_deinit(struct dp_soc *soc, u8 mac_id)
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{
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}
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/**
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* dp_rx_buffer_pool_refill() - Process the rx nbuf list and
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* refill the emergency buffer pool
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* @soc: SoC handle
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* @nbuf: RX buffer
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* @mac_id: MAC ID
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*
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* Return: Whether the rx nbuf is consumed into the pool or not.
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*/
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static inline
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bool dp_rx_buffer_pool_refill(struct dp_soc *soc, qdf_nbuf_t nbuf, u8 mac_id)
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{
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return false;
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}
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/**
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* dp_rx_buffer_pool_nbuf_free() - Free the nbuf or queue it
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* back into the pool
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* @soc: SoC handle
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* @nbuf: RX buffer
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* @mac_id: MAC ID
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*
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* Return: None
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*/
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static inline
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void dp_rx_buffer_pool_nbuf_free(struct dp_soc *soc, qdf_nbuf_t nbuf,
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u8 mac_id)
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{
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qdf_nbuf_free(nbuf);
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}
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/**
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* dp_rx_buffer_pool_nbuf_alloc() - Allocate nbuf for buffer replenish,
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* give nbuf from the pool if allocation fails
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* @soc: SoC handle
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* @mac_id: MAC ID
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* @rx_desc_pool: RX descriptor pool
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* @num_available_buffers: number of available buffers in the ring.
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*
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* Return: nbuf
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*/
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static inline qdf_nbuf_t
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dp_rx_buffer_pool_nbuf_alloc(struct dp_soc *soc, uint32_t mac_id,
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struct rx_desc_pool *rx_desc_pool,
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uint32_t num_available_buffers)
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{
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return qdf_nbuf_alloc(soc->osdev, rx_desc_pool->buf_size,
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RX_BUFFER_RESERVATION,
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rx_desc_pool->buf_alignment, FALSE);
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}
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/**
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* dp_rx_buffer_pool_nbuf_map() - Map nbuff for buffer replenish
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* @soc: SoC handle
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* @rx_desc_pool: RX descriptor pool
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* @nbuf_frag_info_t: nbuf frag info
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*
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* Return: nbuf
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*/
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static inline QDF_STATUS
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dp_rx_buffer_pool_nbuf_map(struct dp_soc *soc,
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struct rx_desc_pool *rx_desc_pool,
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struct dp_rx_nbuf_frag_info *nbuf_frag_info_t)
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{
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return qdf_nbuf_map_nbytes_single(soc->osdev,
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(nbuf_frag_info_t->virt_addr).nbuf,
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QDF_DMA_FROM_DEVICE,
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rx_desc_pool->buf_size);
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}
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static inline void dp_rx_schedule_refill_thread(struct dp_soc *soc) { }
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static inline void dp_rx_refill_buff_pool_lock(struct dp_soc *soc) { }
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static inline void dp_rx_refill_buff_pool_unlock(struct dp_soc *soc) { }
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#endif /* WLAN_FEATURE_RX_PREALLOC_BUFFER_POOL */
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#endif /* _DP_RX_BUFFER_POOL_H_ */
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