[CCID3]: Move the loss interval code to loss_interval.[ch]

And put this into net/dccp/ccids/lib/, where packet_history.[ch] will also be
moved and then we'll have a tfrc_lib.ko module that will be used by
dccp_ccid3.ko and other CCIDs that are variations of TFRC (RFC 3448).

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 61 insertions, 0 deletions

diff --git a/net/dccp/ccids/lib/loss_interval.h b/net/dccp/ccids/lib/loss_interval.h
new file mode 100644
index 000000000000..13ad47ba1420
--- /dev/null
+++ b/net/dccp/ccids/lib/loss_interval.h
@@ -0,0 +1,61 @@
+#ifndef _DCCP_LI_HIST_
+#define _DCCP_LI_HIST_
+/*
+ *  net/dccp/ccids/lib/loss_interval.h
+ *
+ *  Copyright (c) 2005 The University of Waikato, Hamilton, New Zealand.
+ *  Copyright (c) 2005 Ian McDonald <iam4@cs.waikato.ac.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/config.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+
+#define DCCP_LI_HIST_IVAL_F_LENGTH  8
+
+struct dccp_li_hist {
+        kmem_cache_t *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 unsigned int __nocast 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 struct dccp_li_hist_entry *
+                        dccp_li_hist_interval_new(struct dccp_li_hist *hist,
+                                                  struct list_head *list,
+                                                  const u64 seq_loss,
+                                                  const u8 win_loss);
+#endif /* _DCCP_LI_HIST_ */