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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2007-12-12 12:24:49 -0200
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:57:15 -0800
commitdf8f83fdd6369e1ba85f089fd6fe26bb2ddcb36f (patch)
tree8ddb2e0b70d5ed99837919ada6664e70c876f119 /net/dccp/ccids/lib
parent2aaef4e47fef8a6c0bc7fc5d9d3eea4af290e04c (diff)
[TFRC]: Put RX/TX initialisation into tfrc.c
This separates RX/TX initialisation and puts all packet history / loss intervals initialisation into tfrc.c. The organisation is uniform: slab declaration -> {rx,tx}_init() -> {rx,tx}_exit() Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/ccids/lib')
-rw-r--r--net/dccp/ccids/lib/packet_history.c68
-rw-r--r--net/dccp/ccids/lib/tfrc.c31
2 files changed, 55 insertions, 44 deletions
diff --git a/net/dccp/ccids/lib/packet_history.c b/net/dccp/ccids/lib/packet_history.c
index af44082f56e..727b17d3bd0 100644
--- a/net/dccp/ccids/lib/packet_history.c
+++ b/net/dccp/ccids/lib/packet_history.c
@@ -57,6 +57,22 @@ struct tfrc_tx_hist_entry {
*/
static struct kmem_cache *tfrc_tx_hist_slab;
+int __init tfrc_tx_packet_history_init(void)
+{
+ tfrc_tx_hist_slab = kmem_cache_create("tfrc_tx_hist",
+ sizeof(struct tfrc_tx_hist_entry),
+ 0, SLAB_HWCACHE_ALIGN, NULL);
+ return tfrc_tx_hist_slab == NULL ? -ENOBUFS : 0;
+}
+
+void tfrc_tx_packet_history_exit(void)
+{
+ if (tfrc_tx_hist_slab != NULL) {
+ kmem_cache_destroy(tfrc_tx_hist_slab);
+ tfrc_tx_hist_slab = NULL;
+ }
+}
+
static struct tfrc_tx_hist_entry *
tfrc_tx_hist_find_entry(struct tfrc_tx_hist_entry *head, u64 seqno)
{
@@ -119,6 +135,22 @@ EXPORT_SYMBOL_GPL(tfrc_tx_hist_rtt);
*/
static struct kmem_cache *tfrc_rx_hist_slab;
+int __init tfrc_rx_packet_history_init(void)
+{
+ tfrc_rx_hist_slab = kmem_cache_create("tfrc_rxh_cache",
+ sizeof(struct tfrc_rx_hist_entry),
+ 0, SLAB_HWCACHE_ALIGN, NULL);
+ return tfrc_rx_hist_slab == NULL ? -ENOBUFS : 0;
+}
+
+void tfrc_rx_packet_history_exit(void)
+{
+ if (tfrc_rx_hist_slab != NULL) {
+ kmem_cache_destroy(tfrc_rx_hist_slab);
+ tfrc_rx_hist_slab = NULL;
+ }
+}
+
/**
* tfrc_rx_hist_index - index to reach n-th entry after loss_start
*/
@@ -316,39 +348,3 @@ keep_ref_for_next_time:
return sample;
}
EXPORT_SYMBOL_GPL(tfrc_rx_hist_sample_rtt);
-
-__init int packet_history_init(void)
-{
- tfrc_tx_hist_slab = kmem_cache_create("tfrc_tx_hist",
- sizeof(struct tfrc_tx_hist_entry), 0,
- SLAB_HWCACHE_ALIGN, NULL);
- if (tfrc_tx_hist_slab == NULL)
- goto out_err;
-
- tfrc_rx_hist_slab = kmem_cache_create("tfrc_rx_hist",
- sizeof(struct tfrc_rx_hist_entry), 0,
- SLAB_HWCACHE_ALIGN, NULL);
- if (tfrc_rx_hist_slab == NULL)
- goto out_free_tx;
-
- return 0;
-
-out_free_tx:
- kmem_cache_destroy(tfrc_tx_hist_slab);
- tfrc_tx_hist_slab = NULL;
-out_err:
- return -ENOBUFS;
-}
-
-void packet_history_exit(void)
-{
- if (tfrc_tx_hist_slab != NULL) {
- kmem_cache_destroy(tfrc_tx_hist_slab);
- tfrc_tx_hist_slab = NULL;
- }
-
- if (tfrc_rx_hist_slab != NULL) {
- kmem_cache_destroy(tfrc_rx_hist_slab);
- tfrc_rx_hist_slab = NULL;
- }
-}
diff --git a/net/dccp/ccids/lib/tfrc.c b/net/dccp/ccids/lib/tfrc.c
index 3a7a1838a64..20763fa75d4 100644
--- a/net/dccp/ccids/lib/tfrc.c
+++ b/net/dccp/ccids/lib/tfrc.c
@@ -14,27 +14,42 @@ module_param(tfrc_debug, bool, 0444);
MODULE_PARM_DESC(tfrc_debug, "Enable debug messages");
#endif
+extern int tfrc_tx_packet_history_init(void);
+extern void tfrc_tx_packet_history_exit(void);
+extern int tfrc_rx_packet_history_init(void);
+extern void tfrc_rx_packet_history_exit(void);
+
extern int dccp_li_init(void);
extern void dccp_li_exit(void);
-extern int packet_history_init(void);
-extern void packet_history_exit(void);
static int __init tfrc_module_init(void)
{
int rc = dccp_li_init();
- if (rc == 0) {
- rc = packet_history_init();
- if (rc != 0)
- dccp_li_exit();
- }
+ if (rc)
+ goto out;
+
+ rc = tfrc_tx_packet_history_init();
+ if (rc)
+ goto out_free_loss_intervals;
+ rc = tfrc_rx_packet_history_init();
+ if (rc)
+ goto out_free_tx_history;
+ return 0;
+
+out_free_tx_history:
+ tfrc_tx_packet_history_exit();
+out_free_loss_intervals:
+ dccp_li_exit();
+out:
return rc;
}
static void __exit tfrc_module_exit(void)
{
- packet_history_exit();
+ tfrc_rx_packet_history_exit();
+ tfrc_tx_packet_history_exit();
dccp_li_exit();
}