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![Christoph Jaeger](/assets/img/avatar_default.png)
Use a slab cache rather than rolling our own free list. Signed-off-by: Christoph Jaeger <email@christophjaeger.info> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
/* -----------------------------------------------------------------------------
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* Copyright (c) 2011 Ozmo Inc
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* Released under the GNU General Public License Version 2 (GPLv2).
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* -----------------------------------------------------------------------------
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*/
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#ifndef _OZPD_H_
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#define _OZPD_H_
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#include <linux/interrupt.h>
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#include "ozeltbuf.h"
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/* PD state
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*/
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#define OZ_PD_S_IDLE 0x1
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#define OZ_PD_S_CONNECTED 0x2
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#define OZ_PD_S_SLEEP 0x4
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#define OZ_PD_S_STOPPED 0x8
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/* Timer event types.
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*/
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#define OZ_TIMER_TOUT 1
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#define OZ_TIMER_HEARTBEAT 2
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#define OZ_TIMER_STOP 3
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/*
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*External spinlock variable
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*/
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extern spinlock_t g_polling_lock;
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/* Data structure that hold information on a frame for transmisson. This is
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* built when the frame is first transmitted and is used to rebuild the frame
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* if a re-transmission is required.
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*/
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struct oz_tx_frame {
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struct list_head link;
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struct list_head elt_list;
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struct oz_hdr hdr;
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struct sk_buff *skb;
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int total_size;
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};
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struct oz_isoc_stream {
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struct list_head link;
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u8 ep_num;
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u8 frame_num;
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u8 nb_units;
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int size;
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struct sk_buff *skb;
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struct oz_hdr *oz_hdr;
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};
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struct oz_farewell {
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struct list_head link;
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u8 ep_num;
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u8 index;
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u8 len;
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u8 report[0];
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};
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/* Data structure that holds information on a specific peripheral device (PD).
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*/
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struct oz_pd {
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struct list_head link;
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atomic_t ref_count;
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u8 mac_addr[ETH_ALEN];
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unsigned state;
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unsigned state_flags;
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unsigned send_flags;
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u16 total_apps;
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u16 paused_apps;
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u8 session_id;
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u8 param_rsp_status;
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u8 pd_info;
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u8 isoc_sent;
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u32 last_rx_pkt_num;
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u32 last_tx_pkt_num;
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struct timespec last_rx_timestamp;
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u32 trigger_pkt_num;
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unsigned long pulse_time;
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unsigned long pulse_period;
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unsigned long presleep;
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unsigned long keep_alive;
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struct oz_elt_buf elt_buff;
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void *app_ctx[OZ_NB_APPS];
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spinlock_t app_lock[OZ_NB_APPS];
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int max_tx_size;
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u8 mode;
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u8 ms_per_isoc;
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unsigned isoc_latency;
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unsigned max_stream_buffering;
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int nb_queued_frames;
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int nb_queued_isoc_frames;
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spinlock_t tx_frame_lock;
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struct list_head *last_sent_frame;
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struct list_head tx_queue;
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struct list_head farewell_list;
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spinlock_t stream_lock;
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struct list_head stream_list;
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struct net_device *net_dev;
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struct hrtimer heartbeat;
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struct hrtimer timeout;
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u8 timeout_type;
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struct tasklet_struct heartbeat_tasklet;
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struct tasklet_struct timeout_tasklet;
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struct work_struct workitem;
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};
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#define OZ_MAX_QUEUED_FRAMES 4
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struct oz_pd *oz_pd_alloc(const u8 *mac_addr);
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void oz_pd_destroy(struct oz_pd *pd);
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void oz_pd_get(struct oz_pd *pd);
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void oz_pd_put(struct oz_pd *pd);
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void oz_pd_set_state(struct oz_pd *pd, unsigned state);
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void oz_pd_indicate_farewells(struct oz_pd *pd);
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int oz_pd_sleep(struct oz_pd *pd);
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void oz_pd_stop(struct oz_pd *pd);
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void oz_pd_heartbeat(struct oz_pd *pd, u16 apps);
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int oz_services_start(struct oz_pd *pd, u16 apps, int resume);
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void oz_services_stop(struct oz_pd *pd, u16 apps, int pause);
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int oz_prepare_frame(struct oz_pd *pd, int empty);
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void oz_send_queued_frames(struct oz_pd *pd, int backlog);
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void oz_retire_tx_frames(struct oz_pd *pd, u8 lpn);
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int oz_isoc_stream_create(struct oz_pd *pd, u8 ep_num);
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int oz_isoc_stream_delete(struct oz_pd *pd, u8 ep_num);
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int oz_send_isoc_unit(struct oz_pd *pd, u8 ep_num, const u8 *data, int len);
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void oz_handle_app_elt(struct oz_pd *pd, u8 app_id, struct oz_elt *elt);
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void oz_apps_init(void);
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void oz_apps_term(void);
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extern struct kmem_cache *oz_elt_info_cache;
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extern struct kmem_cache *oz_tx_frame_cache;
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#endif /* Sentry */
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