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authorAndy Grover <andy.grover@oracle.com>2009-02-24 15:30:22 +0000
committerDavid S. Miller <davem@davemloft.net>2009-02-26 23:39:25 -0800
commita8c879a7ee988eb67a5e85e87fa2cc953e0ca749 (patch)
tree493db4a3137d9f7bd1fe871ace4f5e12c1fbb2a1 /net/rds/info.h
parent0fbc78cbf51f3edee17c2ede42c7b3c13736158a (diff)
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.h30
1 files changed, 30 insertions, 0 deletions
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