diff options
Diffstat (limited to 'fs/dlm/lowcomms.h')
| -rw-r--r-- | fs/dlm/lowcomms.h | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/fs/dlm/lowcomms.h b/fs/dlm/lowcomms.h index 48bbc4e18761..aaae7115c00d 100644 --- a/fs/dlm/lowcomms.h +++ b/fs/dlm/lowcomms.h @@ -12,7 +12,22 @@ #ifndef __LOWCOMMS_DOT_H__ #define __LOWCOMMS_DOT_H__ -#define LOWCOMMS_MAX_TX_BUFFER_LEN 4096 +#include "dlm_internal.h" + +#define DLM_MIDCOMMS_OPT_LEN sizeof(struct dlm_opts) +#define DLM_MAX_APP_BUFSIZE (DLM_MAX_SOCKET_BUFSIZE - \ + DLM_MIDCOMMS_OPT_LEN) + +#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); +} /* switch to check if dlm is running */ extern int dlm_allow_conn; @@ -22,8 +37,12 @@ void dlm_lowcomms_shutdown(void); void dlm_lowcomms_stop(void); void dlm_lowcomms_exit(void); int dlm_lowcomms_close(int nodeid); -void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc); -void dlm_lowcomms_commit_buffer(void *mh); +struct dlm_msg *dlm_lowcomms_new_msg(int nodeid, int len, gfp_t allocation, + char **ppc, void (*cb)(struct dlm_mhandle *mh), + struct dlm_mhandle *mh); +void dlm_lowcomms_commit_msg(struct dlm_msg *msg); +void dlm_lowcomms_put_msg(struct dlm_msg *msg); +int dlm_lowcomms_resend_msg(struct dlm_msg *msg); int dlm_lowcomms_connect_node(int nodeid); int dlm_lowcomms_nodes_set_mark(int nodeid, unsigned int mark); int dlm_lowcomms_addr(int nodeid, struct sockaddr_storage *addr, int len); |