linux/include/linux/sunrpc/xprtmultipath.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * RPC client multipathing definitions
 *
 * Copyright (c) 2015, 2016, Primary Data, Inc. All rights reserved.
 *
 * Trond Myklebust <[email protected]>
 */
#ifndef _NET_SUNRPC_XPRTMULTIPATH_H
#define _NET_SUNRPC_XPRTMULTIPATH_H

struct rpc_xprt_iter_ops;
struct rpc_sysfs_xprt_switch;
struct rpc_xprt_switch { … };

struct rpc_xprt_iter { … };


struct rpc_xprt_iter_ops { … };

extern struct rpc_xprt_switch *xprt_switch_alloc(struct rpc_xprt *xprt,
		gfp_t gfp_flags);

extern struct rpc_xprt_switch *xprt_switch_get(struct rpc_xprt_switch *xps);
extern void xprt_switch_put(struct rpc_xprt_switch *xps);

extern void rpc_xprt_switch_set_roundrobin(struct rpc_xprt_switch *xps);

extern void rpc_xprt_switch_add_xprt(struct rpc_xprt_switch *xps,
		struct rpc_xprt *xprt);
extern void rpc_xprt_switch_remove_xprt(struct rpc_xprt_switch *xps,
		struct rpc_xprt *xprt, bool offline);

extern void xprt_iter_init(struct rpc_xprt_iter *xpi,
		struct rpc_xprt_switch *xps);

extern void xprt_iter_init_listall(struct rpc_xprt_iter *xpi,
		struct rpc_xprt_switch *xps);

extern void xprt_iter_init_listoffline(struct rpc_xprt_iter *xpi,
		struct rpc_xprt_switch *xps);

extern void xprt_iter_destroy(struct rpc_xprt_iter *xpi);

extern void xprt_iter_rewind(struct rpc_xprt_iter *xpi);

extern struct rpc_xprt_switch *xprt_iter_xchg_switch(
		struct rpc_xprt_iter *xpi,
		struct rpc_xprt_switch *newswitch);

extern struct rpc_xprt *xprt_iter_xprt(struct rpc_xprt_iter *xpi);
extern struct rpc_xprt *xprt_iter_get_xprt(struct rpc_xprt_iter *xpi);
extern struct rpc_xprt *xprt_iter_get_next(struct rpc_xprt_iter *xpi);

extern bool rpc_xprt_switch_has_addr(struct rpc_xprt_switch *xps,
		const struct sockaddr *sap);

extern void xprt_multipath_cleanup_ids(void);

#endif