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1/* SPDX-License-Identifier: GPL-2.0-only */2/******************************************************************************3*******************************************************************************4**5** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.6** Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.7**8**9*******************************************************************************10******************************************************************************/11 12#ifndef __LOWCOMMS_DOT_H__13#define __LOWCOMMS_DOT_H__14 15#include "dlm_internal.h"16 17#define DLM_MIDCOMMS_OPT_LEN sizeof(struct dlm_opts)18#define DLM_MAX_APP_BUFSIZE (DLM_MAX_SOCKET_BUFSIZE - \19 DLM_MIDCOMMS_OPT_LEN)20 21#define CONN_HASH_SIZE 3222 23/* This is deliberately very simple because most clusters have simple24 * sequential nodeids, so we should be able to go straight to a connection25 * struct in the array26 */27static inline int nodeid_hash(int nodeid)28{29 return nodeid & (CONN_HASH_SIZE-1);30}31 32/* check if dlm is running */33bool dlm_lowcomms_is_running(void);34 35int dlm_lowcomms_start(void);36void dlm_lowcomms_shutdown(void);37void dlm_lowcomms_shutdown_node(int nodeid, bool force);38void dlm_lowcomms_stop(void);39void dlm_lowcomms_init(void);40void dlm_lowcomms_exit(void);41int dlm_lowcomms_close(int nodeid);42struct dlm_msg *dlm_lowcomms_new_msg(int nodeid, int len, char **ppc,43 void (*cb)(void *data), void *data);44void dlm_lowcomms_commit_msg(struct dlm_msg *msg);45void dlm_lowcomms_put_msg(struct dlm_msg *msg);46int dlm_lowcomms_resend_msg(struct dlm_msg *msg);47int dlm_lowcomms_connect_node(int nodeid);48int dlm_lowcomms_nodes_set_mark(int nodeid, unsigned int mark);49int dlm_lowcomms_addr(int nodeid, struct sockaddr_storage *addr);50void dlm_midcomms_receive_done(int nodeid);51struct kmem_cache *dlm_lowcomms_writequeue_cache_create(void);52struct kmem_cache *dlm_lowcomms_msg_cache_create(void);53 54#endif /* __LOWCOMMS_DOT_H__ */55 56