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#ifndef _MESSAGE_H
#define _MESSAGE_H
#include <stdint.h>
#include <pthread.h>
#include <platform.h>
#include <libcman.h>
#include <list.h>
#include <rg_types.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <sys/select.h>
typedef enum {
M_NONE = 0,
M_OPEN = 1,
M_OPEN_ACK = 2,
M_CLOSE = 3,
M_DATA = 4,
M_STATECHANGE = 5, /* Node transition */
M_PORTOPENED = 6, /* Port opened */
M_PORTCLOSED = 7, /* Port closed */
M_TRY_SHUTDOWN = 8, /* Local node shutdown */
M_CONFIG_UPDATE = 9 /* (new) Config Update */
} msg_control_t;
typedef enum {
MSG_NONE = -1,
MSG_SOCKET = 1,
MSG_CLUSTER = 2
} msgctx_type_t;
/* Header is never presented to applications */
typedef struct ALIGNED {
uint32_t src_ctx;
uint32_t src_nodeid;
/* 8 */
uint32_t dest_ctx;
uint32_t dest_nodeid;
/* 16 */
uint8_t msg_control;
uint8_t msg_port;
uint8_t pad[2];
/* 20 */
uint8_t msg_reserved[12];
} cluster_msg_hdr_t;
/* Header is never presented to applications */
typedef struct ALIGNED {
uint32_t msg_len; /* Size of tailing message */
uint8_t msg_control;
uint8_t pad[3];
} local_msg_hdr_t;
/* No need for swabbing this one */
/* Cluster private queue */
typedef struct ALIGNED {
list_head();
cluster_msg_hdr_t *message;
int len;
} msg_q_t;
#define swab_cluster_msg_hdr_t(ptr) \
{\
swab32((ptr)->dest_ctx);\
swab32((ptr)->src_ctx);\
swab32((ptr)->src_nodeid);\
swab32((ptr)->dest_nodeid);\
}
typedef struct ALIGNED _msgctx {
struct _msg_ops *ops;
msgctx_type_t type;
int flags;
/* XXX todo make this opaque */
void *sp;
union {
struct {
msg_q_t *queue;
pthread_mutex_t mutex;
pthread_cond_t cond;
cman_handle_t cman_handle;
int nodeid;
int port;
uint32_t local_ctx;
uint32_t remote_ctx;
int select_pipe[2];
} cluster_info;
struct {
int sockfd;
struct ucred cred;
int pad;
} local_info;
} u;
} msgctx_t;
typedef int (*msg_open_t)(int type, int nodeid, int port, msgctx_t *ctx,
int timeout);
typedef int (*msg_close_t)(msgctx_t *);
typedef int (*msg_listen_t)(int me, const void *, msgctx_t **);
typedef int (*msg_accept_t)(msgctx_t *, msgctx_t *);
typedef int (*msg_shutdown_t)(void);
typedef int (*msg_send_t)(msgctx_t *, void *, size_t);
typedef int (*msg_receive_t)(msgctx_t *, void *, size_t, int);
typedef int (*msg_wait_t)(msgctx_t *, int);
typedef int (*msg_fd_set_t)(msgctx_t *, fd_set *, int *);
typedef int (*msg_fd_isset_t)(msgctx_t *, fd_set *);
typedef int (*msg_fd_clr_t)(msgctx_t *, fd_set *);
typedef void (*msg_print_t)(msgctx_t *);
typedef int (*msg_init_t)(msgctx_t *);
typedef struct _msg_ops {
msg_open_t mo_open;
msg_close_t mo_close;
msg_listen_t mo_listen;
msg_accept_t mo_accept;
msg_shutdown_t mo_shutdown;
msg_wait_t mo_wait;
msg_send_t mo_send;
msg_receive_t mo_receive;
msg_fd_set_t mo_fd_set;
msg_fd_isset_t mo_fd_isset;
msg_fd_clr_t mo_fd_clr;
msg_print_t mo_print;
msg_init_t mo_init;
} msg_ops_t;
/* Ripped from ccsd's setup_local_socket */
#define MAX_CONTEXTS 128 /* Testing; production should be 1024-ish */
#define SKF_LISTEN (1<<0)
#define SKF_READ (1<<1)
#define SKF_WRITE (1<<2)
#define SKF_MCAST (1<<3)
/* Call once for MSG_CLUSTER, once for MSG_SOCKET */
/* Private is should be a null-terminated char string for MSG_SOCKET,
and a pointer to int type for MSG_CLUSTER */
int msg_listen(int type, const void *port, int me, msgctx_t **new_ctx);
int msg_open(int type, int nodeid, int port, msgctx_t *ctx, int timeout);
int msg_init(msgctx_t *ctx);
int msg_accept(msgctx_t *listenctx, msgctx_t *acceptctx);
int msg_get_nodeid(msgctx_t *ctx);
int msg_close(msgctx_t *ctx);
int msg_receive(msgctx_t *ctx, void *msg, size_t maxlen, int timeout);
int msg_wait(msgctx_t *ctx, int timeout); /* Select-ish */
int msg_send(msgctx_t *ctx, void *msg, size_t len);
msgctx_t *msg_new_ctx(void);
void msg_free_ctx(msgctx_t *old);
int msg_fd_set(msgctx_t *ctx, fd_set *fds, int *max);
int msg_fd_isset(msgctx_t *ctx, fd_set *fds);
int msg_fd_clr(msgctx_t *ctx, fd_set *fds);
void msg_print(msgctx_t *ctx);
int msg_shutdown(void);
/* From msg_cluster */
int cluster_msg_init(msgctx_t *ctx);
int cluster_msg_listen(int me, const void *, msgctx_t **ctx);
int cluster_msg_shutdown(void);
/* From msg_socket */
int sock_msg_init(msgctx_t *ctx);
int sock_msg_listen(int me, const void *, msgctx_t **ctx);
int sock_msg_shutdown(void);
/* Debugging */
void dump_cluster_ctx(FILE *fp);
#endif
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