mars/kernel/mars_client.h

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/*
* MARS Long Distance Replication Software
*
* This file is part of MARS project: http://schoebel.github.io/mars/
*
* Copyright (C) 2010-2014 Thomas Schoebel-Theuer
* Copyright (C) 2011-2014 1&1 Internet AG
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
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#ifndef MARS_CLIENT_H
#define MARS_CLIENT_H
#include "mars_net.h"
#include "lib_limiter.h"
extern struct mars_limiter client_limiter;
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extern int global_net_io_timeout;
extern int mars_client_info_timeout;
extern int mars_client_abort;
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extern int max_client_channels;
extern int max_client_bulk;
#define MAX_CLIENT_CHANNELS 4
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struct client_mref_aspect {
GENERIC_ASPECT(mref);
struct list_head io_head;
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struct list_head hash_head;
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struct list_head tmp_head;
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unsigned long submit_jiffies;
int alloc_len;
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bool do_dealloc;
bool has_completed;
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};
struct client_brick {
MARS_BRICK(client);
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// tunables
int max_flying; // limit on parallelism
bool limit_mode;
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bool allow_permuting_writes;
bool separate_reads;
// readonly from outside
int connection_state; // 0 = switched off, 1 = not connected, 2 = connected
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/* internal */
atomic_t sender_count;
atomic_t receiver_count;
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int socket_count;
atomic_t fly_count;
atomic_t timeout_count;
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};
struct client_input {
MARS_INPUT(client);
};
struct client_threadinfo {
struct task_struct *thread;
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};
struct client_channel {
struct mars_socket socket;
struct client_threadinfo receiver;
struct list_head wait_list;
struct client_output *output;
long current_space;
int thread_count;
int recv_error;
int ch_nr;
bool is_used;
bool is_open;
bool is_connected;
};
struct client_bundle {
char *host;
char *path;
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struct mars_tcp_params *params;
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int thread_count;
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int old_channel;
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wait_queue_head_t sender_event;
struct client_threadinfo sender;
struct client_channel channel[MAX_CLIENT_CHANNELS];
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};
struct client_output {
MARS_OUTPUT(client);
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struct mutex mutex;
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struct list_head mref_list;
int last_id;
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struct client_bundle bundle;
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struct mars_info info;
wait_queue_head_t info_event;
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bool get_info;
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bool got_info;
struct list_head *hash_table;
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};
MARS_TYPES(client);
#endif