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/*
Copyright (c) 2006-2009 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 "transport.h"
#include "logging.h"
#include "dict.h"
#include "mem-pool.h"
#include "socket-mem-types.h"
#ifndef MAX_IOVEC
#define MAX_IOVEC 16
#endif /* MAX_IOVEC */
#define GF_DEFAULT_SOCKET_LISTEN_PORT 6996
/* 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 {
SOCKET_PROTO_STATE_NADA = 0,
SOCKET_PROTO_STATE_HEADER_COMING,
SOCKET_PROTO_STATE_HEADER_CAME,
SOCKET_PROTO_STATE_DATA_COMING,
SOCKET_PROTO_STATE_DATA_CAME,
SOCKET_PROTO_STATE_COMPLETE,
} socket_proto_state_t;
struct socket_header {
char colonO[3];
uint32_t size1;
uint32_t size2;
char version;
} __attribute__((packed));
struct ioq {
union {
struct list_head list;
struct {
struct ioq *next;
struct ioq *prev;
};
};
struct socket_header header;
struct iovec vector[MAX_IOVEC];
int count;
struct iovec *pending_vector;
int pending_count;
char *buf;
struct iobref *iobref;
};
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 {
int state;
struct socket_header header;
char *hdr_p;
size_t hdrlen;
struct iobuf *iobuf;
char *buf_p;
size_t buflen;
struct iovec vector[2];
int count;
struct iovec *pending_vector;
int pending_count;
} incoming;
pthread_mutex_t lock;
int windowsize;
char lowlat;
char nodelay;
} socket_private_t;
#endif
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