dccp_tcplike.h revision 1.2.16.2
1 1.2.16.2 jdolecek /* $KAME: dccp_tcplike.h,v 1.10 2005/07/22 09:31:14 nishida Exp $ */ 2 1.2.16.2 jdolecek /* $NetBSD: dccp_tcplike.h,v 1.2.16.2 2017/12/03 11:39:03 jdolecek Exp $ */ 3 1.2.16.2 jdolecek 4 1.2.16.2 jdolecek /* 5 1.2.16.2 jdolecek * Copyright (c) 2003 Magnus Erixzon 6 1.2.16.2 jdolecek * All rights reserved. 7 1.2.16.2 jdolecek * 8 1.2.16.2 jdolecek * Redistribution and use in source and binary forms, with or without 9 1.2.16.2 jdolecek * modification, are permitted provided that the following conditions 10 1.2.16.2 jdolecek * are met: 11 1.2.16.2 jdolecek * 12 1.2.16.2 jdolecek * 1. Redistributions of source code must retain the above copyright 13 1.2.16.2 jdolecek * notice, this list of conditions and the following disclaimer. 14 1.2.16.2 jdolecek * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.16.2 jdolecek * notice, this list of conditions and the following disclaimer in the 16 1.2.16.2 jdolecek * documentation and/or other materials provided with the distribution. 17 1.2.16.2 jdolecek * 3. The name of the author may not be used to endorse or promote products 18 1.2.16.2 jdolecek * derived from this software without specific prior written permission. 19 1.2.16.2 jdolecek * 20 1.2.16.2 jdolecek * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 1.2.16.2 jdolecek * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 1.2.16.2 jdolecek * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 1.2.16.2 jdolecek * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 1.2.16.2 jdolecek * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 1.2.16.2 jdolecek * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 1.2.16.2 jdolecek * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 1.2.16.2 jdolecek * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 1.2.16.2 jdolecek * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 1.2.16.2 jdolecek * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 1.2.16.2 jdolecek */ 31 1.2.16.2 jdolecek /* 32 1.2.16.2 jdolecek * Headerfile for TCP-like congestion control for DCCP 33 1.2.16.2 jdolecek */ 34 1.2.16.2 jdolecek 35 1.2.16.2 jdolecek #ifndef _NETINET_DCCP_TCPLIKE_H_ 36 1.2.16.2 jdolecek #define _NETINET_DCCP_TCPLIKE_H_ 37 1.2.16.2 jdolecek 38 1.2.16.2 jdolecek /* 39 1.2.16.2 jdolecek * TCPlike sender 40 1.2.16.2 jdolecek */ 41 1.2.16.2 jdolecek 42 1.2.16.2 jdolecek /* Parameter to decide when a packet is considered lost */ 43 1.2.16.2 jdolecek #define TCPLIKE_NUMDUPACK 3 44 1.2.16.2 jdolecek /* Upperbound timeout value */ 45 1.2.16.2 jdolecek #define TIMEOUT_UBOUND (30 * hz) 46 1.2.16.2 jdolecek #define TCPLIKE_MIN_RTT (hz >> 3) 47 1.2.16.2 jdolecek #define TCPLIKE_INITIAL_CWND 3 48 1.2.16.2 jdolecek #define TCPLIKE_INITIAL_CWNDVECTOR 512 49 1.2.16.2 jdolecek 50 1.2.16.2 jdolecek /* TCPlike sender congestion control block (ccb) */ 51 1.2.16.2 jdolecek struct tcplike_send_ccb 52 1.2.16.2 jdolecek { 53 1.2.16.2 jdolecek kmutex_t mutex; 54 1.2.16.2 jdolecek struct dccpcb *pcb; /* Pointer to associated dccpcb */ 55 1.2.16.2 jdolecek dccp_seq cwnd; /* congestion window */ 56 1.2.16.2 jdolecek dccp_seq ssthresh; 57 1.2.16.2 jdolecek dccp_seq oldcwnd_ts; /* old cwnd tail seqnr */ 58 1.2.16.2 jdolecek 59 1.2.16.2 jdolecek u_int16_t rtt; /* estimated round trip-time */ 60 1.2.16.2 jdolecek u_int16_t rto; /* Timeout value */ 61 1.2.16.2 jdolecek u_int16_t rtt_d; 62 1.2.16.2 jdolecek 63 1.2.16.2 jdolecek int16_t outstanding; /* Number of unacked packets sent */ 64 1.2.16.2 jdolecek u_int16_t rcvr_ackratio; /* Receiver ack ratio */ 65 1.2.16.2 jdolecek 66 1.2.16.2 jdolecek u_int16_t acked_in_win; /* No of acked packets in the window */ 67 1.2.16.2 jdolecek u_int8_t acked_windows; /* No of acked windows with no lost Acks */ 68 1.2.16.2 jdolecek 69 1.2.16.2 jdolecek u_int32_t ack_last; /* Last ok Ack packet */ 70 1.2.16.2 jdolecek u_int32_t ack_miss; /* oldest missing Ack packet */ 71 1.2.16.2 jdolecek 72 1.2.16.2 jdolecek struct callout free_timer; 73 1.2.16.2 jdolecek struct callout rto_timer; 74 1.2.16.2 jdolecek u_int rto_timer_callout; 75 1.2.16.2 jdolecek 76 1.2.16.2 jdolecek u_char *cwndvector; /* 2 bits per packet */ 77 1.2.16.2 jdolecek u_char *cv_hp; /* head ptr for cwndvector */ 78 1.2.16.2 jdolecek u_int16_t cv_size; 79 1.2.16.2 jdolecek dccp_seq cv_hs, cv_ts; /* lowest/highest seq no in cwndvector */ 80 1.2.16.2 jdolecek 81 1.2.16.2 jdolecek u_int8_t sample_rtt; 82 1.2.16.2 jdolecek u_int32_t timestamp; 83 1.2.16.2 jdolecek 84 1.2.16.2 jdolecek dccp_seq rcvd_ack, lost_ack; 85 1.2.16.2 jdolecek }; 86 1.2.16.2 jdolecek 87 1.2.16.2 jdolecek #ifdef _KERNEL 88 1.2.16.2 jdolecek 89 1.2.16.2 jdolecek /* Functions declared in struct dccp_cc_sw */ 90 1.2.16.2 jdolecek 91 1.2.16.2 jdolecek /* 92 1.2.16.2 jdolecek * Initialises the sender side 93 1.2.16.2 jdolecek * args: pcb - pointer to dccpcb of associated connection 94 1.2.16.2 jdolecek * returns: pointer to a tcplike_send_ccb struct on success, otherwise 0 95 1.2.16.2 jdolecek */ 96 1.2.16.2 jdolecek void *tcplike_send_init(struct dccpcb *); 97 1.2.16.2 jdolecek 98 1.2.16.2 jdolecek /* 99 1.2.16.2 jdolecek * Free the sender side 100 1.2.16.2 jdolecek * args: ccb - ccb of sender 101 1.2.16.2 jdolecek */ 102 1.2.16.2 jdolecek void tcplike_send_free(void *); 103 1.2.16.2 jdolecek 104 1.2.16.2 jdolecek /* 105 1.2.16.2 jdolecek * Ask TCPlike wheter one can send a packet or not 106 1.2.16.2 jdolecek * args: ccb - ccb block for current connection 107 1.2.16.2 jdolecek * returns: 0 if ok, else <> 0. 108 1.2.16.2 jdolecek */ 109 1.2.16.2 jdolecek int tcplike_send_packet(void *, long); 110 1.2.16.2 jdolecek void tcplike_send_packet_sent(void *, int, long); 111 1.2.16.2 jdolecek 112 1.2.16.2 jdolecek /* 113 1.2.16.2 jdolecek * Notify that an ack package was received 114 1.2.16.2 jdolecek * args: ccb - ccb block for current connection 115 1.2.16.2 jdolecek */ 116 1.2.16.2 jdolecek void tcplike_send_packet_recv(void *, char *, int); 117 1.2.16.2 jdolecek 118 1.2.16.2 jdolecek #endif 119 1.2.16.2 jdolecek 120 1.2.16.2 jdolecek /* 121 1.2.16.2 jdolecek * TFRC Receiver 122 1.2.16.2 jdolecek */ 123 1.2.16.2 jdolecek 124 1.2.16.2 jdolecek struct ack_list 125 1.2.16.2 jdolecek { 126 1.2.16.2 jdolecek u_int64_t localseq, ackthru; 127 1.2.16.2 jdolecek struct ack_list *next; 128 1.2.16.2 jdolecek }; 129 1.2.16.2 jdolecek 130 1.2.16.2 jdolecek /* TCPlike receiver congestion control block (ccb) */ 131 1.2.16.2 jdolecek struct tcplike_recv_ccb { 132 1.2.16.2 jdolecek kmutex_t mutex; 133 1.2.16.2 jdolecek struct dccpcb *pcb; /* Pointer to associated dccpcb */ 134 1.2.16.2 jdolecek /* No ack ratio or vector here. it's a global feature */ 135 1.2.16.2 jdolecek struct ack_list *av_list; 136 1.2.16.2 jdolecek u_int16_t unacked; /* no of unacked packets */ 137 1.2.16.2 jdolecek struct callout free_timer; 138 1.2.16.2 jdolecek }; 139 1.2.16.2 jdolecek 140 1.2.16.2 jdolecek #ifdef _KERNEL 141 1.2.16.2 jdolecek 142 1.2.16.2 jdolecek /* Functions declared in struct dccp_cc_sw */ 143 1.2.16.2 jdolecek 144 1.2.16.2 jdolecek /* 145 1.2.16.2 jdolecek * Initialises the receiver side 146 1.2.16.2 jdolecek * args: pcb - pointer to dccpcb of associated connection 147 1.2.16.2 jdolecek * returns: pointer to a tcplike_recv_ccb struct on success, otherwise 0 148 1.2.16.2 jdolecek */ 149 1.2.16.2 jdolecek void *tcplike_recv_init(struct dccpcb *); 150 1.2.16.2 jdolecek 151 1.2.16.2 jdolecek /* 152 1.2.16.2 jdolecek * Free the receiver side 153 1.2.16.2 jdolecek * args: ccb - ccb of recevier 154 1.2.16.2 jdolecek */ 155 1.2.16.2 jdolecek void tcplike_recv_free(void *); 156 1.2.16.2 jdolecek 157 1.2.16.2 jdolecek /* 158 1.2.16.2 jdolecek * Tell TCPlike that a packet has been received 159 1.2.16.2 jdolecek * args: ccb - ccb block for current connection 160 1.2.16.2 jdolecek */ 161 1.2.16.2 jdolecek void tcplike_recv_packet_recv(void *, char *, int); 162 1.2.16.2 jdolecek 163 1.2.16.2 jdolecek /* 164 1.2.16.2 jdolecek int tcplike_option_recv(void); 165 1.2.16.2 jdolecek */ 166 1.2.16.2 jdolecek #endif 167 1.2.16.2 jdolecek 168 1.2.16.2 jdolecek #endif 169
Indexes created Tue Oct 21 19:09:51 GMT 2025