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/* SPDX-License-Identifier: GPL-2.0 */
/*
* MCTP per-net structures
*/
#ifndef __NETNS_MCTP_H__
#define __NETNS_MCTP_H__
#include <linux/hash.h>
#include <linux/hashtable.h>
#include <linux/mutex.h>
#include <linux/types.h>
#define MCTP_BINDS_BITS 7
struct netns_mctp {
/* Only updated under RTNL, entries freed via RCU */
struct list_head routes;
/* Bound sockets: hash table of sockets, keyed by
* (type, src_eid, dest_eid).
* Specific src_eid/dest_eid entries also have an entry for
* MCTP_ADDR_ANY. This list is updated from non-atomic contexts
* (under bind_lock), and read (under rcu) in packet rx.
*/
struct mutex bind_lock;
DECLARE_HASHTABLE(binds, MCTP_BINDS_BITS);
/* tag allocations. This list is read and updated from atomic contexts,
* but elements are free()ed after a RCU grace-period
*/
spinlock_t keys_lock;
struct hlist_head keys;
/* MCTP network */
unsigned int default_net;
/* neighbour table */
struct mutex neigh_lock;
struct list_head neighbours;
};
static inline u32 mctp_bind_hash(u8 type, u8 local_addr, u8 peer_addr)
{
return hash_32(type | (u32)local_addr << 8 | (u32)peer_addr << 16,
MCTP_BINDS_BITS);
}
#endif /* __NETNS_MCTP_H__ */
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