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/* |
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ROHC Project 2003 at Lulea University of Technology, Sweden. |
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Authors: Andreas Vernersson <andver-8@student.luth.se> |
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Daniel Pettersson <danpet-7@student.luth.se> |
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Erik Soderstrom <soderstrom@yahoo.com> |
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Fredrik Lindstrom <frelin-9@student.luth.se> |
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Johan Stenmark <johste-8@student.luth.se> |
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Martin Juhlin <juhlin@users.sourceforge.net> |
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Mikael Larsson <larmik-9@student.luth.se> |
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Robert Maxe <robmax-1@student.luth.se> |
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|
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Copyright (C) 2003 Andreas Vernersson, Daniel Pettersson, |
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Erik Soderström, Fredrik Lindström, Johan Stenmark, |
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Martin Juhlin, Mikael Larsson, Robert Maxe. |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#ifndef _D_UDP_LITE_H |
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#define _D_UDP_LITE_H |
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|
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#include <linux/ip.h> |
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#include <linux/udp.h> |
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#include "rohc.h" |
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#include "decomp.h" |
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#include "d_util.h" |
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|
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|
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struct s_udp_lite_change |
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{ |
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int rnd; |
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int nbo; |
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|
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struct iphdr ip; |
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struct udphdr udp; |
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}; |
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|
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struct s_udp_lite_profile_data |
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{ |
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struct s_udp_lite_change * last1; |
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struct s_udp_lite_change * last2; |
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struct s_udp_lite_change * active1; |
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struct s_udp_lite_change * active2; |
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|
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struct sd_lsb_decode sn; |
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struct sd_ip_id_decode ip_id1; |
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struct sd_ip_id_decode ip_id2; |
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|
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int multiple_ip; |
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|
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// udp-lite checksum coverage field present or not |
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int coverage_present; |
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|
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// if inferred then udp-lite == udp otherwise use |
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// the value stored i udphdr length field which is |
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// supposed to be the checksum coverage field in |
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// udp-lite. |
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// this matters only when coverage_present == 0 |
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int coverage_inferred; |
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|
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int ce_packet; |
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int package_type; |
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|
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int counter; |
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int last_packet_time; //the time of the last crc-approved packet |
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int current_packet_time; //the time of the current packet without crc-test yet |
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int inter_arrival_time; //a average inter-packet time of the last few packets, |
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}; |
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|
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struct s_profile * udp_lite_profile_create(void); |
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|
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#endif |
