mirror of https://gitee.com/openkylin/linux.git
91 lines
3.2 KiB
C
91 lines
3.2 KiB
C
/* net/tipc/socket.h: Include file for TIPC socket code
|
|
*
|
|
* Copyright (c) 2014, Ericsson AB
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the names of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _TIPC_SOCK_H
|
|
#define _TIPC_SOCK_H
|
|
|
|
#include "port.h"
|
|
#include <net/sock.h>
|
|
|
|
#define TIPC_CONN_OK 0
|
|
#define TIPC_CONN_PROBING 1
|
|
|
|
/**
|
|
* struct tipc_sock - TIPC socket structure
|
|
* @sk: socket - interacts with 'port' and with user via the socket API
|
|
* @port: port - interacts with 'sk' and with the rest of the TIPC stack
|
|
* @peer_name: the peer of the connection, if any
|
|
* @conn_timeout: the time we can wait for an unresponded setup request
|
|
* @dupl_rcvcnt: number of bytes counted twice, in both backlog and rcv queue
|
|
* @link_cong: non-zero if owner must sleep because of link congestion
|
|
* @sent_unacked: # messages sent by socket, and not yet acked by peer
|
|
* @rcv_unacked: # messages read by user, but not yet acked back to peer
|
|
*/
|
|
|
|
struct tipc_sock {
|
|
struct sock sk;
|
|
struct tipc_port port;
|
|
unsigned int conn_timeout;
|
|
atomic_t dupl_rcvcnt;
|
|
int link_cong;
|
|
uint sent_unacked;
|
|
uint rcv_unacked;
|
|
};
|
|
|
|
static inline struct tipc_sock *tipc_sk(const struct sock *sk)
|
|
{
|
|
return container_of(sk, struct tipc_sock, sk);
|
|
}
|
|
|
|
static inline struct tipc_sock *tipc_port_to_sock(const struct tipc_port *port)
|
|
{
|
|
return container_of(port, struct tipc_sock, port);
|
|
}
|
|
|
|
static inline void tipc_sock_wakeup(struct tipc_sock *tsk)
|
|
{
|
|
tsk->sk.sk_write_space(&tsk->sk);
|
|
}
|
|
|
|
static inline int tipc_sk_conn_cong(struct tipc_sock *tsk)
|
|
{
|
|
return tsk->sent_unacked >= TIPC_FLOWCTRL_WIN;
|
|
}
|
|
|
|
int tipc_sk_rcv(struct sk_buff *buf);
|
|
|
|
void tipc_sk_mcast_rcv(struct sk_buff *buf);
|
|
|
|
#endif
|