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