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/* SPDX-License-Identifier: GPL-2.0-only */
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/******************************************************************************
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* *
* * Copyright ( C ) Sistina Software , Inc . 1997 - 2003 All rights reserved .
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* * Copyright ( C ) 2004 - 2009 Red Hat , Inc . All rights reserved .
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* *
* *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
# ifndef __LOWCOMMS_DOT_H__
# define __LOWCOMMS_DOT_H__
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# include "dlm_internal.h"
# define DLM_MIDCOMMS_OPT_LEN sizeof(struct dlm_opts)
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# define DLM_MAX_APP_BUFSIZE (DLM_MAX_SOCKET_BUFSIZE - \
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DLM_MIDCOMMS_OPT_LEN )
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# define CONN_HASH_SIZE 32
/* This is deliberately very simple because most clusters have simple
* sequential nodeids , so we should be able to go straight to a connection
* struct in the array
*/
static inline int nodeid_hash ( int nodeid )
{
return nodeid & ( CONN_HASH_SIZE - 1 ) ;
}
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/* check if dlm is running */
bool dlm_lowcomms_is_running ( void ) ;
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int dlm_lowcomms_start ( void ) ;
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void dlm_lowcomms_shutdown ( void ) ;
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void dlm_lowcomms_shutdown_node ( int nodeid , bool force ) ;
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void dlm_lowcomms_stop ( void ) ;
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void dlm_lowcomms_init ( void ) ;
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void dlm_lowcomms_exit ( void ) ;
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int dlm_lowcomms_close ( int nodeid ) ;
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struct dlm_msg * dlm_lowcomms_new_msg ( int nodeid , int len , gfp_t allocation ,
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char * * ppc , void ( * cb ) ( void * data ) ,
void * data ) ;
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void dlm_lowcomms_commit_msg ( struct dlm_msg * msg ) ;
void dlm_lowcomms_put_msg ( struct dlm_msg * msg ) ;
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int dlm_lowcomms_resend_msg ( struct dlm_msg * msg ) ;
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int dlm_lowcomms_connect_node ( int nodeid ) ;
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int dlm_lowcomms_nodes_set_mark ( int nodeid , unsigned int mark ) ;
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int dlm_lowcomms_addr ( int nodeid , struct sockaddr_storage * addr , int len ) ;
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void dlm_midcomms_receive_done ( int nodeid ) ;
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struct kmem_cache * dlm_lowcomms_writequeue_cache_create ( void ) ;
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struct kmem_cache * dlm_lowcomms_msg_cache_create ( void ) ;
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# endif /* __LOWCOMMS_DOT_H__ */
