17c657876SArnaldo Carvalho de Melo /* 27c657876SArnaldo Carvalho de Melo * net/dccp/ccids/ccid3.h 37c657876SArnaldo Carvalho de Melo * 47c657876SArnaldo Carvalho de Melo * Copyright (c) 2005 The University of Waikato, Hamilton, New Zealand. 57c657876SArnaldo Carvalho de Melo * 67c657876SArnaldo Carvalho de Melo * An implementation of the DCCP protocol 77c657876SArnaldo Carvalho de Melo * 87c657876SArnaldo Carvalho de Melo * This code has been developed by the University of Waikato WAND 97c657876SArnaldo Carvalho de Melo * research group. For further information please see http://www.wand.net.nz/ 107c657876SArnaldo Carvalho de Melo * or e-mail Ian McDonald - iam4@cs.waikato.ac.nz 117c657876SArnaldo Carvalho de Melo * 127c657876SArnaldo Carvalho de Melo * This code also uses code from Lulea University, rereleased as GPL by its 137c657876SArnaldo Carvalho de Melo * authors: 147c657876SArnaldo Carvalho de Melo * Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon 157c657876SArnaldo Carvalho de Melo * 167c657876SArnaldo Carvalho de Melo * Changes to meet Linux coding standards, to make it meet latest ccid3 draft 177c657876SArnaldo Carvalho de Melo * and to make it work as a loadable module in the DCCP stack written by 187c657876SArnaldo Carvalho de Melo * Arnaldo Carvalho de Melo <acme@conectiva.com.br>. 197c657876SArnaldo Carvalho de Melo * 207c657876SArnaldo Carvalho de Melo * Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br> 217c657876SArnaldo Carvalho de Melo * 227c657876SArnaldo Carvalho de Melo * This program is free software; you can redistribute it and/or modify 237c657876SArnaldo Carvalho de Melo * it under the terms of the GNU General Public License as published by 247c657876SArnaldo Carvalho de Melo * the Free Software Foundation; either version 2 of the License, or 257c657876SArnaldo Carvalho de Melo * (at your option) any later version. 267c657876SArnaldo Carvalho de Melo * 277c657876SArnaldo Carvalho de Melo * This program is distributed in the hope that it will be useful, 287c657876SArnaldo Carvalho de Melo * but WITHOUT ANY WARRANTY; without even the implied warranty of 297c657876SArnaldo Carvalho de Melo * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 307c657876SArnaldo Carvalho de Melo * GNU General Public License for more details. 317c657876SArnaldo Carvalho de Melo * 327c657876SArnaldo Carvalho de Melo * You should have received a copy of the GNU General Public License 337c657876SArnaldo Carvalho de Melo * along with this program; if not, write to the Free Software 347c657876SArnaldo Carvalho de Melo * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 357c657876SArnaldo Carvalho de Melo */ 367c657876SArnaldo Carvalho de Melo #ifndef _DCCP_CCID3_H_ 377c657876SArnaldo Carvalho de Melo #define _DCCP_CCID3_H_ 387c657876SArnaldo Carvalho de Melo 397c657876SArnaldo Carvalho de Melo #include <linux/types.h> 407c657876SArnaldo Carvalho de Melo #include <linux/list.h> 417c657876SArnaldo Carvalho de Melo 427c657876SArnaldo Carvalho de Melo struct ccid3_options_received { 437c657876SArnaldo Carvalho de Melo u64 ccid3or_seqno:48, 447c657876SArnaldo Carvalho de Melo ccid3or_loss_intervals_idx:16; 457c657876SArnaldo Carvalho de Melo u16 ccid3or_loss_intervals_len; 467c657876SArnaldo Carvalho de Melo u32 ccid3or_loss_event_rate; 477c657876SArnaldo Carvalho de Melo u32 ccid3or_receive_rate; 487c657876SArnaldo Carvalho de Melo }; 497c657876SArnaldo Carvalho de Melo 507c657876SArnaldo Carvalho de Melo /** struct ccid3_hc_tx_sock - CCID3 sender half connection congestion control block 517c657876SArnaldo Carvalho de Melo * 527c657876SArnaldo Carvalho de Melo * @ccid3hctx_state - Sender state 537c657876SArnaldo Carvalho de Melo * @ccid3hctx_x - Current sending rate 547c657876SArnaldo Carvalho de Melo * @ccid3hctx_x_recv - Receive rate 557c657876SArnaldo Carvalho de Melo * @ccid3hctx_x_calc - Calculated send (?) rate 567c657876SArnaldo Carvalho de Melo * @ccid3hctx_s - Packet size 577c657876SArnaldo Carvalho de Melo * @ccid3hctx_rtt - Estimate of current round trip time in usecs 587c657876SArnaldo Carvalho de Melo * @@ccid3hctx_p - Current loss event rate (0-1) scaled by 1000000 597c657876SArnaldo Carvalho de Melo * @ccid3hctx_last_win_count - Last window counter sent 607c657876SArnaldo Carvalho de Melo * @ccid3hctx_t_last_win_count - Timestamp of earliest packet with last_win_count value sent 617c657876SArnaldo Carvalho de Melo * @ccid3hctx_no_feedback_timer - Handle to no feedback timer 627c657876SArnaldo Carvalho de Melo * @ccid3hctx_idle - FIXME 637c657876SArnaldo Carvalho de Melo * @ccid3hctx_t_ld - Time last doubled during slow start 647c657876SArnaldo Carvalho de Melo * @ccid3hctx_t_nom - Nominal send time of next packet 657c657876SArnaldo Carvalho de Melo * @ccid3hctx_t_ipi - Interpacket (send) interval 667c657876SArnaldo Carvalho de Melo * @ccid3hctx_delta - Send timer delta 677c657876SArnaldo Carvalho de Melo * @ccid3hctx_hist - Packet history 687c657876SArnaldo Carvalho de Melo */ 697c657876SArnaldo Carvalho de Melo struct ccid3_hc_tx_sock { 707c657876SArnaldo Carvalho de Melo u32 ccid3hctx_x; 717c657876SArnaldo Carvalho de Melo u32 ccid3hctx_x_recv; 727c657876SArnaldo Carvalho de Melo u32 ccid3hctx_x_calc; 737c657876SArnaldo Carvalho de Melo u16 ccid3hctx_s; 747c657876SArnaldo Carvalho de Melo u32 ccid3hctx_rtt; 757c657876SArnaldo Carvalho de Melo u32 ccid3hctx_p; 767c657876SArnaldo Carvalho de Melo u8 ccid3hctx_state; 777c657876SArnaldo Carvalho de Melo u8 ccid3hctx_last_win_count; 787c657876SArnaldo Carvalho de Melo u8 ccid3hctx_idle; 797c657876SArnaldo Carvalho de Melo struct timeval ccid3hctx_t_last_win_count; 807c657876SArnaldo Carvalho de Melo struct timer_list ccid3hctx_no_feedback_timer; 817c657876SArnaldo Carvalho de Melo struct timeval ccid3hctx_t_ld; 827c657876SArnaldo Carvalho de Melo struct timeval ccid3hctx_t_nom; 83c68e64cfSArnaldo Carvalho de Melo u32 ccid3hctx_t_rto; 847c657876SArnaldo Carvalho de Melo u32 ccid3hctx_t_ipi; 857c657876SArnaldo Carvalho de Melo u32 ccid3hctx_delta; 867c657876SArnaldo Carvalho de Melo struct list_head ccid3hctx_hist; 877c657876SArnaldo Carvalho de Melo struct ccid3_options_received ccid3hctx_options_received; 887c657876SArnaldo Carvalho de Melo }; 897c657876SArnaldo Carvalho de Melo 907c657876SArnaldo Carvalho de Melo struct ccid3_loss_interval_hist_entry { 917c657876SArnaldo Carvalho de Melo struct list_head ccid3lih_node; 927c657876SArnaldo Carvalho de Melo u64 ccid3lih_seqno:48, 937c657876SArnaldo Carvalho de Melo ccid3lih_win_count:4; 947c657876SArnaldo Carvalho de Melo u32 ccid3lih_interval; 957c657876SArnaldo Carvalho de Melo }; 967c657876SArnaldo Carvalho de Melo 977c657876SArnaldo Carvalho de Melo struct ccid3_hc_rx_sock { 987c657876SArnaldo Carvalho de Melo u64 ccid3hcrx_seqno_last_counter:48, 997c657876SArnaldo Carvalho de Melo ccid3hcrx_state:8, 1007c657876SArnaldo Carvalho de Melo ccid3hcrx_last_counter:4; 1017c657876SArnaldo Carvalho de Melo unsigned long ccid3hcrx_rtt; 1027c657876SArnaldo Carvalho de Melo u32 ccid3hcrx_p; 1037c657876SArnaldo Carvalho de Melo u32 ccid3hcrx_bytes_recv; 1047c657876SArnaldo Carvalho de Melo struct timeval ccid3hcrx_tstamp_last_feedback; 1057c657876SArnaldo Carvalho de Melo struct timeval ccid3hcrx_tstamp_last_ack; 1067c657876SArnaldo Carvalho de Melo struct list_head ccid3hcrx_hist; 1077c657876SArnaldo Carvalho de Melo struct list_head ccid3hcrx_loss_interval_hist; 1087c657876SArnaldo Carvalho de Melo u16 ccid3hcrx_s; 1097c657876SArnaldo Carvalho de Melo u32 ccid3hcrx_pinv; 1107c657876SArnaldo Carvalho de Melo u32 ccid3hcrx_elapsed_time; 1117c657876SArnaldo Carvalho de Melo u32 ccid3hcrx_x_recv; 1127c657876SArnaldo Carvalho de Melo }; 1137c657876SArnaldo Carvalho de Melo 1147c657876SArnaldo Carvalho de Melo #define ccid3_hc_tx_field(s,field) (s->dccps_hc_tx_ccid_private == NULL ? 0 : \ 1157c657876SArnaldo Carvalho de Melo ((struct ccid3_hc_tx_sock *)s->dccps_hc_tx_ccid_private)->ccid3hctx_##field) 1167c657876SArnaldo Carvalho de Melo 1177c657876SArnaldo Carvalho de Melo #define ccid3_hc_rx_field(s,field) (s->dccps_hc_rx_ccid_private == NULL ? 0 : \ 1187c657876SArnaldo Carvalho de Melo ((struct ccid3_hc_rx_sock *)s->dccps_hc_rx_ccid_private)->ccid3hcrx_##field) 1197c657876SArnaldo Carvalho de Melo 1207c657876SArnaldo Carvalho de Melo #endif /* _DCCP_CCID3_H_ */ 121