linux/drivers/net/wireless/st/cw1200/queue.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * O(1) TX queue with built-in allocator for ST-Ericsson CW1200 drivers
 *
 * Copyright (c) 2010, ST-Ericsson
 * Author: Dmitry Tarnyagin <[email protected]>
 */

#ifndef CW1200_QUEUE_H_INCLUDED
#define CW1200_QUEUE_H_INCLUDED

/* private */ struct cw1200_queue_item;

/* extern */ struct sk_buff;
/* extern */ struct wsm_tx;
/* extern */ struct cw1200_common;
/* extern */ struct ieee80211_tx_queue_stats;
/* extern */ struct cw1200_txpriv;

/* forward */ struct cw1200_queue_stats;

cw1200_queue_skb_dtor_t;

struct cw1200_queue { … };

struct cw1200_queue_stats { … };

struct cw1200_txpriv { … };

int cw1200_queue_stats_init(struct cw1200_queue_stats *stats,
			    size_t map_capacity,
			    cw1200_queue_skb_dtor_t skb_dtor,
			    struct cw1200_common *priv);
int cw1200_queue_init(struct cw1200_queue *queue,
		      struct cw1200_queue_stats *stats,
		      u8 queue_id,
		      size_t capacity,
		      unsigned long ttl);
int cw1200_queue_clear(struct cw1200_queue *queue);
void cw1200_queue_stats_deinit(struct cw1200_queue_stats *stats);
void cw1200_queue_deinit(struct cw1200_queue *queue);

size_t cw1200_queue_get_num_queued(struct cw1200_queue *queue,
				   u32 link_id_map);
int cw1200_queue_put(struct cw1200_queue *queue,
		     struct sk_buff *skb,
		     struct cw1200_txpriv *txpriv);
int cw1200_queue_get(struct cw1200_queue *queue,
		     u32 link_id_map,
		     struct wsm_tx **tx,
		     struct ieee80211_tx_info **tx_info,
		     const struct cw1200_txpriv **txpriv);
int cw1200_queue_requeue(struct cw1200_queue *queue, u32 packet_id);
int cw1200_queue_requeue_all(struct cw1200_queue *queue);
int cw1200_queue_remove(struct cw1200_queue *queue,
			u32 packet_id);
int cw1200_queue_get_skb(struct cw1200_queue *queue, u32 packet_id,
			 struct sk_buff **skb,
			 const struct cw1200_txpriv **txpriv);
void cw1200_queue_lock(struct cw1200_queue *queue);
void cw1200_queue_unlock(struct cw1200_queue *queue);
bool cw1200_queue_get_xmit_timestamp(struct cw1200_queue *queue,
				     unsigned long *timestamp,
				     u32 pending_frame_id);

bool cw1200_queue_stats_is_empty(struct cw1200_queue_stats *stats,
				 u32 link_id_map);

static inline u8 cw1200_queue_get_queue_id(u32 packet_id)
{ … }

static inline u8 cw1200_queue_get_generation(u32 packet_id)
{ … }

#endif /* CW1200_QUEUE_H_INCLUDED */