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#ifndef _DCCP_LI_HIST_
#define _DCCP_LI_HIST_
/*
* net/dccp/ccids/lib/loss_interval.h
*
* Copyright (c) 2005-7 The University of Waikato, Hamilton, New Zealand.
* Copyright (c) 2005-7 Ian McDonald <ian.mcdonald@jandi.co.nz>
* Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*/
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/time.h>
#define DCCP_LI_HIST_IVAL_F_LENGTH 8
struct dccp_li_hist {
struct kmem_cache *dccplih_slab;
};
extern struct dccp_li_hist *dccp_li_hist_new(const char *name);
extern void dccp_li_hist_delete(struct dccp_li_hist *hist);
struct dccp_li_hist_entry {
struct list_head dccplih_node;
u64 dccplih_seqno:48,
dccplih_win_count:4;
u32 dccplih_interval;
};
static inline struct dccp_li_hist_entry *
dccp_li_hist_entry_new(struct dccp_li_hist *hist,
const gfp_t prio)
{
return kmem_cache_alloc(hist->dccplih_slab, prio);
}
static inline void dccp_li_hist_entry_delete(struct dccp_li_hist *hist,
struct dccp_li_hist_entry *entry)
{
if (entry != NULL)
kmem_cache_free(hist->dccplih_slab, entry);
}
extern void dccp_li_hist_purge(struct dccp_li_hist *hist,
struct list_head *list);
extern u32 dccp_li_hist_calc_i_mean(struct list_head *list);
extern int dccp_li_hist_interval_new(struct dccp_li_hist *hist,
struct list_head *list, const u64 seq_loss, const u8 win_loss);
extern void dccp_li_update_li(struct sock *sk, struct dccp_li_hist *li_hist,
struct list_head *li_hist_list,
struct list_head *hist_list,
struct timeval *last_feedback, u16 s,
u32 bytes_recv, u32 previous_x_recv,
u64 seq_loss, u8 win_loss);
#endif /* _DCCP_LI_HIST_ */
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