| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _RDS_INFO_H |
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| 3 | #define _RDS_INFO_H |
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| 4 | |
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| 5 | struct rds_info_lengths { |
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| 6 | unsigned int nr; |
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| 7 | unsigned int each; |
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| 8 | }; |
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| 9 | |
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| 10 | struct rds_info_iterator; |
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| 11 | |
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| 12 | /* |
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| 13 | * These functions must fill in the fields of @lens to reflect the size |
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| 14 | * of the available info source. If the snapshot fits in @len then it |
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| 15 | * should be copied using @iter. The caller will deduce if it was copied |
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| 16 | * or not by comparing the lengths. |
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| 17 | */ |
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| 18 | typedef void (*rds_info_func)(struct socket *sock, unsigned int len, |
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| 19 | struct rds_info_iterator *iter, |
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| 20 | struct rds_info_lengths *lens); |
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| 21 | |
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| 22 | void rds_info_register_func(int optname, rds_info_func func); |
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| 23 | void rds_info_deregister_func(int optname, rds_info_func func); |
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| 24 | int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval, |
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| 25 | int __user *optlen); |
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| 26 | void rds_info_copy(struct rds_info_iterator *iter, void *data, |
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| 27 | unsigned long bytes); |
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| 28 | void rds_info_iter_unmap(struct rds_info_iterator *iter); |
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| 29 | |
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| 30 | |
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| 31 | #endif |
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| 32 | |
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