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113 lines
3.2 KiB
113 lines
3.2 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* O(1) TX queue with built-in allocator for ST-Ericsson CW1200 drivers |
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* |
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* Copyright (c) 2010, ST-Ericsson |
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* Author: Dmitry Tarnyagin <[email protected]> |
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*/ |
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#ifndef CW1200_QUEUE_H_INCLUDED |
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#define CW1200_QUEUE_H_INCLUDED |
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/* private */ struct cw1200_queue_item; |
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/* extern */ struct sk_buff; |
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/* extern */ struct wsm_tx; |
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/* extern */ struct cw1200_common; |
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/* extern */ struct ieee80211_tx_queue_stats; |
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/* extern */ struct cw1200_txpriv; |
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/* forward */ struct cw1200_queue_stats; |
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typedef void (*cw1200_queue_skb_dtor_t)(struct cw1200_common *priv, |
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struct sk_buff *skb, |
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const struct cw1200_txpriv *txpriv); |
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struct cw1200_queue { |
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struct cw1200_queue_stats *stats; |
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size_t capacity; |
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size_t num_queued; |
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size_t num_pending; |
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size_t num_sent; |
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struct cw1200_queue_item *pool; |
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struct list_head queue; |
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struct list_head free_pool; |
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struct list_head pending; |
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int tx_locked_cnt; |
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int *link_map_cache; |
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bool overfull; |
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spinlock_t lock; /* Protect queue entry */ |
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u8 queue_id; |
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u8 generation; |
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struct timer_list gc; |
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unsigned long ttl; |
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}; |
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struct cw1200_queue_stats { |
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spinlock_t lock; /* Protect stats entry */ |
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int *link_map_cache; |
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int num_queued; |
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size_t map_capacity; |
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wait_queue_head_t wait_link_id_empty; |
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cw1200_queue_skb_dtor_t skb_dtor; |
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struct cw1200_common *priv; |
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}; |
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struct cw1200_txpriv { |
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u8 link_id; |
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u8 raw_link_id; |
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u8 tid; |
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u8 rate_id; |
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u8 offset; |
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}; |
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int cw1200_queue_stats_init(struct cw1200_queue_stats *stats, |
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size_t map_capacity, |
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cw1200_queue_skb_dtor_t skb_dtor, |
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struct cw1200_common *priv); |
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int cw1200_queue_init(struct cw1200_queue *queue, |
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struct cw1200_queue_stats *stats, |
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u8 queue_id, |
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size_t capacity, |
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unsigned long ttl); |
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int cw1200_queue_clear(struct cw1200_queue *queue); |
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void cw1200_queue_stats_deinit(struct cw1200_queue_stats *stats); |
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void cw1200_queue_deinit(struct cw1200_queue *queue); |
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size_t cw1200_queue_get_num_queued(struct cw1200_queue *queue, |
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u32 link_id_map); |
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int cw1200_queue_put(struct cw1200_queue *queue, |
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struct sk_buff *skb, |
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struct cw1200_txpriv *txpriv); |
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int cw1200_queue_get(struct cw1200_queue *queue, |
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u32 link_id_map, |
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struct wsm_tx **tx, |
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struct ieee80211_tx_info **tx_info, |
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const struct cw1200_txpriv **txpriv); |
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int cw1200_queue_requeue(struct cw1200_queue *queue, u32 packet_id); |
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int cw1200_queue_requeue_all(struct cw1200_queue *queue); |
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int cw1200_queue_remove(struct cw1200_queue *queue, |
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u32 packet_id); |
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int cw1200_queue_get_skb(struct cw1200_queue *queue, u32 packet_id, |
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struct sk_buff **skb, |
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const struct cw1200_txpriv **txpriv); |
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void cw1200_queue_lock(struct cw1200_queue *queue); |
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void cw1200_queue_unlock(struct cw1200_queue *queue); |
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bool cw1200_queue_get_xmit_timestamp(struct cw1200_queue *queue, |
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unsigned long *timestamp, |
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u32 pending_frame_id); |
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bool cw1200_queue_stats_is_empty(struct cw1200_queue_stats *stats, |
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u32 link_id_map); |
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static inline u8 cw1200_queue_get_queue_id(u32 packet_id) |
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{ |
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return (packet_id >> 16) & 0xFF; |
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} |
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static inline u8 cw1200_queue_get_generation(u32 packet_id) |
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{ |
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return (packet_id >> 8) & 0xFF; |
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} |
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#endif /* CW1200_QUEUE_H_INCLUDED */
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