Arnaldo Carvalho de Melo | ae6706f | 2005-08-27 23:03:09 -0300 | [diff] [blame] | 1 | #ifndef _DCCP_LI_HIST_ |
| 2 | #define _DCCP_LI_HIST_ |
| 3 | /* |
| 4 | * net/dccp/ccids/lib/loss_interval.h |
| 5 | * |
| 6 | * Copyright (c) 2005 The University of Waikato, Hamilton, New Zealand. |
| 7 | * Copyright (c) 2005 Ian McDonald <iam4@cs.waikato.ac.nz> |
| 8 | * Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the Free |
| 12 | * Software Foundation; either version 2 of the License, or (at your option) |
| 13 | * any later version. |
| 14 | */ |
| 15 | |
Arnaldo Carvalho de Melo | ae6706f | 2005-08-27 23:03:09 -0300 | [diff] [blame] | 16 | #include <linux/list.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/time.h> |
| 19 | |
| 20 | #define DCCP_LI_HIST_IVAL_F_LENGTH 8 |
| 21 | |
| 22 | struct dccp_li_hist { |
| 23 | kmem_cache_t *dccplih_slab; |
| 24 | }; |
| 25 | |
| 26 | extern struct dccp_li_hist *dccp_li_hist_new(const char *name); |
| 27 | extern void dccp_li_hist_delete(struct dccp_li_hist *hist); |
| 28 | |
| 29 | struct dccp_li_hist_entry { |
| 30 | struct list_head dccplih_node; |
| 31 | u64 dccplih_seqno:48, |
| 32 | dccplih_win_count:4; |
| 33 | u32 dccplih_interval; |
| 34 | }; |
| 35 | |
| 36 | static inline struct dccp_li_hist_entry * |
| 37 | dccp_li_hist_entry_new(struct dccp_li_hist *hist, |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 38 | const gfp_t prio) |
Arnaldo Carvalho de Melo | ae6706f | 2005-08-27 23:03:09 -0300 | [diff] [blame] | 39 | { |
| 40 | return kmem_cache_alloc(hist->dccplih_slab, prio); |
| 41 | } |
| 42 | |
| 43 | static inline void dccp_li_hist_entry_delete(struct dccp_li_hist *hist, |
| 44 | struct dccp_li_hist_entry *entry) |
| 45 | { |
| 46 | if (entry != NULL) |
| 47 | kmem_cache_free(hist->dccplih_slab, entry); |
| 48 | } |
| 49 | |
| 50 | extern void dccp_li_hist_purge(struct dccp_li_hist *hist, |
| 51 | struct list_head *list); |
| 52 | |
| 53 | extern u32 dccp_li_hist_calc_i_mean(struct list_head *list); |
| 54 | |
| 55 | extern struct dccp_li_hist_entry * |
| 56 | dccp_li_hist_interval_new(struct dccp_li_hist *hist, |
| 57 | struct list_head *list, |
| 58 | const u64 seq_loss, |
| 59 | const u8 win_loss); |
| 60 | #endif /* _DCCP_LI_HIST_ */ |