| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /****************************************************************************** |
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| 3 | ******************************************************************************* |
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| 4 | ** |
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| 5 | ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
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| 6 | ** Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved. |
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| 7 | ** |
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| 8 | ** |
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| 9 | ******************************************************************************* |
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| 10 | ******************************************************************************/ |
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| 11 | |
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| 12 | #ifndef __LOWCOMMS_DOT_H__ |
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| 13 | #define __LOWCOMMS_DOT_H__ |
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| 14 | |
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| 15 | #include "dlm_internal.h" |
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| 16 | |
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| 17 | #define DLM_MIDCOMMS_OPT_LEN sizeof(struct dlm_opts) |
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| 18 | #define DLM_MAX_APP_BUFSIZE (DLM_MAX_SOCKET_BUFSIZE - \ |
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| 19 | DLM_MIDCOMMS_OPT_LEN) |
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| 20 | |
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| 21 | #define CONN_HASH_SIZE 32 |
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| 22 | |
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| 23 | /* This is deliberately very simple because most clusters have simple |
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| 24 | * sequential nodeids, so we should be able to go straight to a connection |
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| 25 | * struct in the array |
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| 26 | */ |
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| 27 | static inline int nodeid_hash(int nodeid) |
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| 28 | { |
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| 29 | return nodeid & (CONN_HASH_SIZE-1); |
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| 30 | } |
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| 31 | |
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| 32 | /* check if dlm is running */ |
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| 33 | bool dlm_lowcomms_is_running(void); |
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| 34 | |
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| 35 | int dlm_lowcomms_start(void); |
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| 36 | void dlm_lowcomms_shutdown(void); |
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| 37 | void dlm_lowcomms_shutdown_node(int nodeid, bool force); |
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| 38 | void dlm_lowcomms_stop(void); |
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| 39 | void dlm_lowcomms_init(void); |
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| 40 | void dlm_lowcomms_exit(void); |
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| 41 | int dlm_lowcomms_close(int nodeid); |
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| 42 | struct dlm_msg *dlm_lowcomms_new_msg(int nodeid, int len, gfp_t allocation, |
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| 43 | char **ppc, void (*cb)(void *data), |
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| 44 | void *data); |
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| 45 | void dlm_lowcomms_commit_msg(struct dlm_msg *msg); |
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| 46 | void dlm_lowcomms_put_msg(struct dlm_msg *msg); |
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| 47 | int dlm_lowcomms_resend_msg(struct dlm_msg *msg); |
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| 48 | int dlm_lowcomms_connect_node(int nodeid); |
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| 49 | int dlm_lowcomms_nodes_set_mark(int nodeid, unsigned int mark); |
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| 50 | int dlm_lowcomms_addr(int nodeid, struct sockaddr_storage *addr, int len); |
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| 51 | void dlm_midcomms_receive_done(int nodeid); |
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| 52 | struct kmem_cache *dlm_lowcomms_writequeue_cache_create(void); |
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| 53 | struct kmem_cache *dlm_lowcomms_msg_cache_create(void); |
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| 54 | |
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| 55 | #endif /* __LOWCOMMS_DOT_H__ */ |
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| 56 | |
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| 57 | |
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