/* 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 <dmitry.tarnyagin@lockless.no>
|
*/
|
|
#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;
|
|
typedef void (*cw1200_queue_skb_dtor_t)(struct cw1200_common *priv,
|
struct sk_buff *skb,
|
const struct cw1200_txpriv *txpriv);
|
|
struct cw1200_queue {
|
struct cw1200_queue_stats *stats;
|
size_t capacity;
|
size_t num_queued;
|
size_t num_pending;
|
size_t num_sent;
|
struct cw1200_queue_item *pool;
|
struct list_head queue;
|
struct list_head free_pool;
|
struct list_head pending;
|
int tx_locked_cnt;
|
int *link_map_cache;
|
bool overfull;
|
spinlock_t lock; /* Protect queue entry */
|
u8 queue_id;
|
u8 generation;
|
struct timer_list gc;
|
unsigned long ttl;
|
};
|
|
struct cw1200_queue_stats {
|
spinlock_t lock; /* Protect stats entry */
|
int *link_map_cache;
|
int num_queued;
|
size_t map_capacity;
|
wait_queue_head_t wait_link_id_empty;
|
cw1200_queue_skb_dtor_t skb_dtor;
|
struct cw1200_common *priv;
|
};
|
|
struct cw1200_txpriv {
|
u8 link_id;
|
u8 raw_link_id;
|
u8 tid;
|
u8 rate_id;
|
u8 offset;
|
};
|
|
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)
|
{
|
return (packet_id >> 16) & 0xFF;
|
}
|
|
static inline u8 cw1200_queue_get_generation(u32 packet_id)
|
{
|
return (packet_id >> 8) & 0xFF;
|
}
|
|
#endif /* CW1200_QUEUE_H_INCLUDED */
|
