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a8c879a7ee
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>
30 lines
934 B
C
30 lines
934 B
C
#ifndef _RDS_INFO_H
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#define _RDS_INFO_H
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struct rds_info_lengths {
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unsigned int nr;
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unsigned int each;
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};
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struct rds_info_iterator;
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/*
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* These functions must fill in the fields of @lens to reflect the size
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* of the available info source. If the snapshot fits in @len then it
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* should be copied using @iter. The caller will deduce if it was copied
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* or not by comparing the lengths.
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*/
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typedef void (*rds_info_func)(struct socket *sock, unsigned int len,
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struct rds_info_iterator *iter,
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struct rds_info_lengths *lens);
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void rds_info_register_func(int optname, rds_info_func func);
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void rds_info_deregister_func(int optname, rds_info_func func);
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int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
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int __user *optlen);
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void rds_info_copy(struct rds_info_iterator *iter, void *data,
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unsigned long bytes);
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void rds_info_iter_unmap(struct rds_info_iterator *iter);
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#endif
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