1 /* net/tipc/socket.h: Include file for TIPC socket code 2 * 3 * Copyright (c) 2014, Ericsson AB 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the names of the copyright holders nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * Alternatively, this software may be distributed under the terms of the 19 * GNU General Public License ("GPL") version 2 as published by the Free 20 * Software Foundation. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef _TIPC_SOCK_H 36 #define _TIPC_SOCK_H 37 38 #include "port.h" 39 #include <net/sock.h> 40 41 #define TIPC_CONN_OK 0 42 #define TIPC_CONN_PROBING 1 43 44 /** 45 * struct tipc_sock - TIPC socket structure 46 * @sk: socket - interacts with 'port' and with user via the socket API 47 * @port: port - interacts with 'sk' and with the rest of the TIPC stack 48 * @peer_name: the peer of the connection, if any 49 * @conn_timeout: the time we can wait for an unresponded setup request 50 * @dupl_rcvcnt: number of bytes counted twice, in both backlog and rcv queue 51 * @link_cong: non-zero if owner must sleep because of link congestion 52 * @sent_unacked: # messages sent by socket, and not yet acked by peer 53 * @rcv_unacked: # messages read by user, but not yet acked back to peer 54 */ 55 56 struct tipc_sock { 57 struct sock sk; 58 struct tipc_port port; 59 unsigned int conn_timeout; 60 atomic_t dupl_rcvcnt; 61 int link_cong; 62 uint sent_unacked; 63 uint rcv_unacked; 64 }; 65 66 static inline struct tipc_sock *tipc_sk(const struct sock *sk) 67 { 68 return container_of(sk, struct tipc_sock, sk); 69 } 70 71 static inline struct tipc_sock *tipc_port_to_sock(const struct tipc_port *port) 72 { 73 return container_of(port, struct tipc_sock, port); 74 } 75 76 static inline void tipc_sock_wakeup(struct tipc_sock *tsk) 77 { 78 tsk->sk.sk_write_space(&tsk->sk); 79 } 80 81 static inline int tipc_sk_conn_cong(struct tipc_sock *tsk) 82 { 83 return tsk->sent_unacked >= TIPC_FLOWCTRL_WIN; 84 } 85 86 int tipc_sk_rcv(struct sk_buff *buf); 87 88 void tipc_sk_mcast_rcv(struct sk_buff *buf); 89 90 #endif 91