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author | Andy Grover <andy.grover@oracle.com> | 2009-02-24 15:30:22 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2009-02-27 07:39:25 (GMT) |
commit | a8c879a7ee988eb67a5e85e87fa2cc953e0ca749 (patch) | |
tree | 493db4a3137d9f7bd1fe871ace4f5e12c1fbb2a1 /net/rds/info.h | |
parent | 0fbc78cbf51f3edee17c2ede42c7b3c13736158a (diff) | |
download | linux-a8c879a7ee988eb67a5e85e87fa2cc953e0ca749.tar.xz |
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 <andy.grover@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/info.h')
-rw-r--r-- | net/rds/info.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/net/rds/info.h b/net/rds/info.h new file mode 100644 index 0000000..b6c052c --- /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 |