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/*
Copyright (c) 2010 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _SOCKET_H
#define _SOCKET_H
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "event.h"
#include "rpc-transport.h"
#include "logging.h"
#include "dict.h"
#include "mem-pool.h"
#ifndef MAX_IOVEC
#define MAX_IOVEC 16
#endif /* MAX_IOVEC */
#define GF_DEFAULT_SOCKET_LISTEN_PORT 6969
#define RPC_MAX_FRAGMENT_SIZE 0x7fffffff
/* This is the size set through setsockopt for
* both the TCP receive window size and the
* send buffer size.
* Till the time iobuf size becomes configurable, this size is set to include
* two iobufs + the GlusterFS protocol headers.
* Linux allows us to over-ride the max values for the system.
* Should we over-ride them? Because if we set a value larger than the default
* setsockopt will fail. Having larger values might be beneficial for
* IB links.
*/
#define GF_DEFAULT_SOCKET_WINDOW_SIZE (512 * GF_UNIT_KB)
#define GF_MAX_SOCKET_WINDOW_SIZE (1 * GF_UNIT_MB)
#define GF_MIN_SOCKET_WINDOW_SIZE (128 * GF_UNIT_KB)
typedef enum {
SP_STATE_NADA = 0,
SP_STATE_COMPLETE,
SP_STATE_READING_FRAGHDR,
SP_STATE_READ_FRAGHDR,
SP_STATE_READING_FRAG,
} sp_rpcrecord_state_t;
typedef enum {
SP_STATE_RPCFRAG_INIT,
SP_STATE_READING_MSGTYPE,
SP_STATE_READ_MSGTYPE,
} sp_rpcfrag_state_t;
typedef enum {
SP_STATE_SIMPLE_MSG_INIT,
SP_STATE_READING_SIMPLE_MSG,
} sp_rpcfrag_simple_msg_state_t;
typedef enum {
SP_STATE_VECTORED_REQUEST_INIT,
SP_STATE_READING_CREDBYTES,
SP_STATE_READ_CREDBYTES, /* read credential data. */
SP_STATE_READING_VERFBYTES,
SP_STATE_READ_VERFBYTES, /* read verifier data */
SP_STATE_READING_PROG,
} sp_rpcfrag_vectored_request_state_t;
typedef enum {
SP_STATE_REQUEST_HEADER_INIT,
SP_STATE_READING_RPCHDR1,
SP_STATE_READ_RPCHDR1, /* read msg from beginning till and
* including credlen
*/
} sp_rpcfrag_request_header_state_t;
struct ioq {
union {
struct list_head list;
struct {
struct ioq *next;
struct ioq *prev;
};
};
uint32_t fraghdr;
struct iovec vector[MAX_IOVEC];
int count;
struct iovec *pending_vector;
int pending_count;
struct iobref *iobref;
};
typedef struct {
sp_rpcfrag_request_header_state_t header_state;
sp_rpcfrag_vectored_request_state_t vector_state;
} sp_rpcfrag_request_state_t;
typedef enum {
SP_STATE_VECTORED_REPLY_STATUS_INIT,
SP_STATE_READING_REPLY_STATUS,
SP_STATE_READ_REPLY_STATUS,
} sp_rpcfrag_vectored_reply_status_state_t;
typedef enum {
SP_STATE_ACCEPTED_SUCCESS_REPLY_INIT,
SP_STATE_READING_PROC_HEADER,
SP_STATE_READ_PROC_HEADER,
} sp_rpcfrag_vectored_reply_accepted_success_state_t;
typedef enum {
SP_STATE_ACCEPTED_REPLY_INIT,
SP_STATE_READING_REPLY_VERFLEN,
SP_STATE_READ_REPLY_VERFLEN,
SP_STATE_READING_REPLY_VERFBYTES,
SP_STATE_READ_REPLY_VERFBYTES,
} sp_rpcfrag_vectored_reply_accepted_state_t;
typedef struct {
uint32_t accept_status;
sp_rpcfrag_vectored_reply_status_state_t status_state;
sp_rpcfrag_vectored_reply_accepted_state_t accepted_state;
sp_rpcfrag_vectored_reply_accepted_success_state_t accepted_success_state;
} sp_rpcfrag_vectored_reply_state_t;
typedef struct {
int32_t sock;
int32_t idx;
unsigned char connected; // -1 = not connected. 0 = in progress. 1 = connected
char bio;
char connect_finish_log;
char submit_log;
union {
struct list_head ioq;
struct {
struct ioq *ioq_next;
struct ioq *ioq_prev;
};
};
struct {
sp_rpcrecord_state_t record_state;
struct {
char *fragcurrent;
uint32_t bytes_read;
uint32_t remaining_size;
struct iovec vector;
struct iovec *pending_vector;
union {
sp_rpcfrag_request_state_t request;
sp_rpcfrag_vectored_reply_state_t reply;
} call_body;
sp_rpcfrag_simple_msg_state_t simple_state;
sp_rpcfrag_state_t state;
} frag;
struct iobuf *iobuf;
size_t iobuf_size;
struct iovec vector[2];
int count;
struct iovec payload_vector;
struct iobref *iobref;
rpc_request_info_t *request_info;
struct iovec *pending_vector;
int pending_count;
uint32_t fraghdr;
char complete_record;
msg_type_t msg_type;
size_t total_bytes_read;
} incoming;
pthread_mutex_t lock;
int windowsize;
char lowlat;
char nodelay;
} socket_private_t;
#endif
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