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yaml
---
r: 44285
b: refs/heads/master
c: 7af5af3
h: refs/heads/master
i:
  44283: bd2c91e
v: v3
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Gerrit Renker authored and David S. Miller committed Dec 11, 2006
1 parent a840fe4 commit 5102549
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Showing 2 changed files with 113 additions and 108 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 85dcb1f78039cc55ccddd9622657a338b718aafe
refs/heads/master: 7af5af3013f84693a7af581e3c8b32f9db493cf5
219 changes: 112 additions & 107 deletions trunk/net/dccp/ccids/lib/packet_history.c
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Expand Up @@ -36,9 +36,100 @@

#include <linux/module.h>
#include <linux/string.h>

#include "packet_history.h"

/*
* Transmitter History Routines
*/
struct dccp_tx_hist *dccp_tx_hist_new(const char *name)
{
struct dccp_tx_hist *hist = kmalloc(sizeof(*hist), GFP_ATOMIC);
static const char dccp_tx_hist_mask[] = "tx_hist_%s";
char *slab_name;

if (hist == NULL)
goto out;

slab_name = kmalloc(strlen(name) + sizeof(dccp_tx_hist_mask) - 1,
GFP_ATOMIC);
if (slab_name == NULL)
goto out_free_hist;

sprintf(slab_name, dccp_tx_hist_mask, name);
hist->dccptxh_slab = kmem_cache_create(slab_name,
sizeof(struct dccp_tx_hist_entry),
0, SLAB_HWCACHE_ALIGN,
NULL, NULL);
if (hist->dccptxh_slab == NULL)
goto out_free_slab_name;
out:
return hist;
out_free_slab_name:
kfree(slab_name);
out_free_hist:
kfree(hist);
hist = NULL;
goto out;
}

EXPORT_SYMBOL_GPL(dccp_tx_hist_new);

void dccp_tx_hist_delete(struct dccp_tx_hist *hist)
{
const char* name = kmem_cache_name(hist->dccptxh_slab);

kmem_cache_destroy(hist->dccptxh_slab);
kfree(name);
kfree(hist);
}

EXPORT_SYMBOL_GPL(dccp_tx_hist_delete);

struct dccp_tx_hist_entry *
dccp_tx_hist_find_entry(const struct list_head *list, const u64 seq)
{
struct dccp_tx_hist_entry *packet = NULL, *entry;

list_for_each_entry(entry, list, dccphtx_node)
if (entry->dccphtx_seqno == seq) {
packet = entry;
break;
}

return packet;
}

EXPORT_SYMBOL_GPL(dccp_tx_hist_find_entry);

void dccp_tx_hist_purge(struct dccp_tx_hist *hist, struct list_head *list)
{
struct dccp_tx_hist_entry *entry, *next;

list_for_each_entry_safe(entry, next, list, dccphtx_node) {
list_del_init(&entry->dccphtx_node);
dccp_tx_hist_entry_delete(hist, entry);
}
}

EXPORT_SYMBOL_GPL(dccp_tx_hist_purge);

void dccp_tx_hist_purge_older(struct dccp_tx_hist *hist,
struct list_head *list,
struct dccp_tx_hist_entry *packet)
{
struct dccp_tx_hist_entry *next;

list_for_each_entry_safe_continue(packet, next, list, dccphtx_node) {
list_del_init(&packet->dccphtx_node);
dccp_tx_hist_entry_delete(hist, packet);
}
}

EXPORT_SYMBOL_GPL(dccp_tx_hist_purge_older);

/*
* Receiver History Routines
*/
struct dccp_rx_hist *dccp_rx_hist_new(const char *name)
{
struct dccp_rx_hist *hist = kmalloc(sizeof(*hist), GFP_ATOMIC);
Expand Down Expand Up @@ -83,18 +174,24 @@ void dccp_rx_hist_delete(struct dccp_rx_hist *hist)

EXPORT_SYMBOL_GPL(dccp_rx_hist_delete);

void dccp_rx_hist_purge(struct dccp_rx_hist *hist, struct list_head *list)
int dccp_rx_hist_find_entry(const struct list_head *list, const u64 seq,
u8 *ccval)
{
struct dccp_rx_hist_entry *entry, *next;
struct dccp_rx_hist_entry *packet = NULL, *entry;

list_for_each_entry_safe(entry, next, list, dccphrx_node) {
list_del_init(&entry->dccphrx_node);
kmem_cache_free(hist->dccprxh_slab, entry);
}
}
list_for_each_entry(entry, list, dccphrx_node)
if (entry->dccphrx_seqno == seq) {
packet = entry;
break;
}

EXPORT_SYMBOL_GPL(dccp_rx_hist_purge);
if (packet)
*ccval = packet->dccphrx_ccval;

return packet != NULL;
}

EXPORT_SYMBOL_GPL(dccp_rx_hist_find_entry);
struct dccp_rx_hist_entry *
dccp_rx_hist_find_data_packet(const struct list_head *list)
{
Expand Down Expand Up @@ -184,110 +281,18 @@ void dccp_rx_hist_add_packet(struct dccp_rx_hist *hist,

EXPORT_SYMBOL_GPL(dccp_rx_hist_add_packet);

struct dccp_tx_hist *dccp_tx_hist_new(const char *name)
{
struct dccp_tx_hist *hist = kmalloc(sizeof(*hist), GFP_ATOMIC);
static const char dccp_tx_hist_mask[] = "tx_hist_%s";
char *slab_name;

if (hist == NULL)
goto out;

slab_name = kmalloc(strlen(name) + sizeof(dccp_tx_hist_mask) - 1,
GFP_ATOMIC);
if (slab_name == NULL)
goto out_free_hist;

sprintf(slab_name, dccp_tx_hist_mask, name);
hist->dccptxh_slab = kmem_cache_create(slab_name,
sizeof(struct dccp_tx_hist_entry),
0, SLAB_HWCACHE_ALIGN,
NULL, NULL);
if (hist->dccptxh_slab == NULL)
goto out_free_slab_name;
out:
return hist;
out_free_slab_name:
kfree(slab_name);
out_free_hist:
kfree(hist);
hist = NULL;
goto out;
}

EXPORT_SYMBOL_GPL(dccp_tx_hist_new);

void dccp_tx_hist_delete(struct dccp_tx_hist *hist)
{
const char* name = kmem_cache_name(hist->dccptxh_slab);

kmem_cache_destroy(hist->dccptxh_slab);
kfree(name);
kfree(hist);
}

EXPORT_SYMBOL_GPL(dccp_tx_hist_delete);

struct dccp_tx_hist_entry *
dccp_tx_hist_find_entry(const struct list_head *list, const u64 seq)
{
struct dccp_tx_hist_entry *packet = NULL, *entry;

list_for_each_entry(entry, list, dccphtx_node)
if (entry->dccphtx_seqno == seq) {
packet = entry;
break;
}

return packet;
}

EXPORT_SYMBOL_GPL(dccp_tx_hist_find_entry);

int dccp_rx_hist_find_entry(const struct list_head *list, const u64 seq,
u8 *ccval)
{
struct dccp_rx_hist_entry *packet = NULL, *entry;

list_for_each_entry(entry, list, dccphrx_node)
if (entry->dccphrx_seqno == seq) {
packet = entry;
break;
}

if (packet)
*ccval = packet->dccphrx_ccval;

return packet != NULL;
}

EXPORT_SYMBOL_GPL(dccp_rx_hist_find_entry);

void dccp_tx_hist_purge_older(struct dccp_tx_hist *hist,
struct list_head *list,
struct dccp_tx_hist_entry *packet)
void dccp_rx_hist_purge(struct dccp_rx_hist *hist, struct list_head *list)
{
struct dccp_tx_hist_entry *next;
struct dccp_rx_hist_entry *entry, *next;

list_for_each_entry_safe_continue(packet, next, list, dccphtx_node) {
list_del_init(&packet->dccphtx_node);
dccp_tx_hist_entry_delete(hist, packet);
list_for_each_entry_safe(entry, next, list, dccphrx_node) {
list_del_init(&entry->dccphrx_node);
kmem_cache_free(hist->dccprxh_slab, entry);
}
}

EXPORT_SYMBOL_GPL(dccp_tx_hist_purge_older);

void dccp_tx_hist_purge(struct dccp_tx_hist *hist, struct list_head *list)
{
struct dccp_tx_hist_entry *entry, *next;

list_for_each_entry_safe(entry, next, list, dccphtx_node) {
list_del_init(&entry->dccphtx_node);
dccp_tx_hist_entry_delete(hist, entry);
}
}
EXPORT_SYMBOL_GPL(dccp_rx_hist_purge);

EXPORT_SYMBOL_GPL(dccp_tx_hist_purge);

MODULE_AUTHOR("Ian McDonald <ian.mcdonald@jandi.co.nz>, "
"Arnaldo Carvalho de Melo <acme@ghostprotocols.net>");
Expand Down

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