litmus-rt.git - The LITMUS^RT kernel.

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/* SCTP kernel implementation * Copyright (c) 1999-2000 Cisco, Inc. * Copyright (c) 1999-2001 Motorola, Inc. * * This file is part of the SCTP kernel implementation * * These functions implement the SCTP primitive functions from Section 10. * * Note that the descriptions from the specification are USER level * functions--this file is the functions which populate the struct proto * for SCTP which is the BOTTOM of the sockets interface. * * This SCTP implementation 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, or (at your option) * any later version. * * This SCTP implementation 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 GNU CC; see the file COPYING. If not, write to * the Free Software Foundation, 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. * * Please send any bug reports or fixes you make to the * email address(es): * lksctp developers <lksctp-developers@lists.sourceforge.net> * * Or submit a bug report through the following website: * http://www.sf.net/projects/lksctp * * Written or modified by: * La Monte H.P. Yarroll <piggy@acm.org> * Narasimha Budihal <narasimha@refcode.org> * Karl Knutson <karl@athena.chicago.il.us> * Ardelle Fan <ardelle.fan@intel.com> * Kevin Gao <kevin.gao@intel.com> * * Any bugs reported given to us we will try to fix... any fixes shared will * be incorporated into the next SCTP release. */ #include <linux/types.h> #include <linux/list.h> /* For struct list_head */ #include <linux/socket.h> #include <linux/ip.h> #include <linux/time.h> /* For struct timeval */ #include <net/sock.h> #include <net/sctp/sctp.h> #include <net/sctp/sm.h> #define DECLARE_PRIMITIVE(name) \ /* This is called in the code as sctp_primitive_ ## name. */ \ int sctp_primitive_ ## name(struct sctp_association *asoc, \ void *arg) { \ int error = 0; \ sctp_event_t event_type; sctp_subtype_t subtype; \ sctp_state_t state; \ struct sctp_endpoint *ep; \ \ event_type = SCTP_EVENT_T_PRIMITIVE; \ subtype = SCTP_ST_PRIMITIVE(SCTP_PRIMITIVE_ ## name); \ state = asoc ? asoc->state : SCTP_STATE_CLOSED; \ ep = asoc ? asoc->ep : NULL; \ \ error = sctp_do_sm(event_type, subtype, state, ep, asoc, \ arg, GFP_KERNEL); \ return error; \ } /* 10.1 ULP-to-SCTP * B) Associate * * Format: ASSOCIATE(local SCTP instance name, destination transport addr, * outbound stream count) * -> association id [,destination transport addr list] [,outbound stream * count] * * This primitive allows the upper layer to initiate an association to a * specific peer endpoint. * * This version assumes that asoc is fully populated with the initial * parameters. We then return a traditional kernel indicator of * success or failure. */ /* This is called in the code as sctp_primitive_ASSOCIATE. */ DECLARE_PRIMITIVE(ASSOCIATE) /* 10.1 ULP-to-SCTP * C) Shutdown * * Format: SHUTDOWN(association id) * -> result * * Gracefully closes an association. Any locally queued user data * will be delivered to the peer. The association will be terminated only * after the peer acknowledges all the SCTP packets sent. A success code * will be returned on successful termination of the association. If * attempting to terminate the association results in a failure, an error * code shall be returned. */ DECLARE_PRIMITIVE(SHUTDOWN); /* 10.1 ULP-to-SCTP * C) Abort * * Format: Abort(association id [, cause code]) * -> result * * Ungracefully closes an association. Any locally queued user data * will be discarded and an ABORT chunk is sent to the peer. A success * code will be returned on successful abortion of the association. If * attempting to abort the association results in a failure, an error * code shall be returned. */ DECLARE_PRIMITIVE(ABORT); /* 10.1 ULP-to-SCTP * E) Send * * Format: SEND(association id, buffer address, byte count [,context] * [,stream id] [,life time] [,destination transport address] * [,unorder flag] [,no-bundle flag] [,payload protocol-id] )


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