From a8c879a7ee988eb67a5e85e87fa2cc953e0ca749 Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Tue, 24 Feb 2009 15:30:22 +0000 Subject: RDS: Info and stats RDS currently generates a lot of stats that are accessible via the rds-info utility. This code implements the support for this. Signed-off-by: Andy Grover Signed-off-by: David S. Miller --- net/rds/info.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 net/rds/info.h (limited to 'net/rds/info.h') diff --git a/net/rds/info.h b/net/rds/info.h new file mode 100644 index 000000000000..b6c052ca7d22 --- /dev/null +++ b/net/rds/info.h @@ -0,0 +1,30 @@ +#ifndef _RDS_INFO_H +#define _RDS_INFO_H + +struct rds_info_lengths { + unsigned int nr; + unsigned int each; +}; + +struct rds_info_iterator; + +/* + * These functions must fill in the fields of @lens to reflect the size + * of the available info source. If the snapshot fits in @len then it + * should be copied using @iter. The caller will deduce if it was copied + * or not by comparing the lengths. + */ +typedef void (*rds_info_func)(struct socket *sock, unsigned int len, + struct rds_info_iterator *iter, + struct rds_info_lengths *lens); + +void rds_info_register_func(int optname, rds_info_func func); +void rds_info_deregister_func(int optname, rds_info_func func); +int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval, + int __user *optlen); +void rds_info_copy(struct rds_info_iterator *iter, void *data, + unsigned long bytes); +void rds_info_iter_unmap(struct rds_info_iterator *iter); + + +#endif -- cgit v1.2.3-59-g8ed1b