RDS: convert bind hash table to re-sizable hashtable
To further improve the RDS connection scalabilty on massive systems
where number of sockets grows into tens of thousands of sockets, there
is a need of larger bind hashtable. Pre-allocated 8K or 16K table is
not very flexible in terms of memory utilisation. The rhashtable
infrastructure gives us the flexibility to grow the hashtbable based
on use and also comes up with inbuilt efficient bucket(chain) handling.
Reviewed-by: David Miller <davem@davemloft.net>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/rds/rds.h b/net/rds/rds.h
index 543c308..0e2797b 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -7,6 +7,7 @@
#include <rdma/rdma_cm.h>
#include <linux/mutex.h>
#include <linux/rds.h>
+#include <linux/rhashtable.h>
#include "info.h"
@@ -474,7 +475,8 @@
* bound_addr used for both incoming and outgoing, no INADDR_ANY
* support.
*/
- struct hlist_node rs_bound_node;
+ struct rhash_head rs_bound_node;
+ u64 rs_bound_key;
__be32 rs_bound_addr;
__be32 rs_conn_addr;
__be16 rs_bound_port;
@@ -605,7 +607,8 @@
int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len);
void rds_remove_bound(struct rds_sock *rs);
struct rds_sock *rds_find_bound(__be32 addr, __be16 port);
-void rds_bind_lock_init(void);
+int rds_bind_lock_init(void);
+void rds_bind_lock_destroy(void);
/* cong.c */
int rds_cong_get_maps(struct rds_connection *conn);