1 /* 2 * net/dccp/ccids/ccid2.h 3 * 4 * Copyright (c) 2005 Andrea Bittau <a.bittau@cs.ucl.ac.uk> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 */ 20 #ifndef _DCCP_CCID2_H_ 21 #define _DCCP_CCID2_H_ 22 23 #include <linux/dccp.h> 24 #include <linux/timer.h> 25 #include <linux/types.h> 26 #include "../ccid.h" 27 28 struct sock; 29 30 struct ccid2_seq { 31 u64 ccid2s_seq; 32 unsigned long ccid2s_sent; 33 int ccid2s_acked; 34 struct ccid2_seq *ccid2s_prev; 35 struct ccid2_seq *ccid2s_next; 36 }; 37 38 #define CCID2_SEQBUF_LEN 1024 39 #define CCID2_SEQBUF_MAX 128 40 41 /** struct ccid2_hc_tx_sock - CCID2 TX half connection 42 * 43 * @ccid2hctx_ssacks - ACKs recv in slow start 44 * @ccid2hctx_acks - ACKS recv in AI phase 45 * @ccid2hctx_sent - packets sent in this window 46 * @ccid2hctx_lastrtt -time RTT was last measured 47 * @ccid2hctx_arsent - packets sent [ack ratio] 48 * @ccid2hctx_ackloss - ack was lost in this win 49 * @ccid2hctx_rpseq - last consecutive seqno 50 * @ccid2hctx_rpdupack - dupacks since rpseq 51 */ 52 struct ccid2_hc_tx_sock { 53 int ccid2hctx_cwnd; 54 int ccid2hctx_ssacks; 55 int ccid2hctx_acks; 56 unsigned int ccid2hctx_ssthresh; 57 int ccid2hctx_pipe; 58 int ccid2hctx_numdupack; 59 struct ccid2_seq *ccid2hctx_seqbuf[CCID2_SEQBUF_MAX]; 60 int ccid2hctx_seqbufc; 61 struct ccid2_seq *ccid2hctx_seqh; 62 struct ccid2_seq *ccid2hctx_seqt; 63 long ccid2hctx_rto; 64 long ccid2hctx_srtt; 65 long ccid2hctx_rttvar; 66 int ccid2hctx_sent; 67 unsigned long ccid2hctx_lastrtt; 68 struct timer_list ccid2hctx_rtotimer; 69 unsigned long ccid2hctx_arsent; 70 int ccid2hctx_ackloss; 71 u64 ccid2hctx_rpseq; 72 int ccid2hctx_rpdupack; 73 int ccid2hctx_sendwait; 74 unsigned long ccid2hctx_last_cong; 75 u64 ccid2hctx_high_ack; 76 }; 77 78 struct ccid2_hc_rx_sock { 79 int ccid2hcrx_data; 80 }; 81 82 static inline struct ccid2_hc_tx_sock *ccid2_hc_tx_sk(const struct sock *sk) 83 { 84 return ccid_priv(dccp_sk(sk)->dccps_hc_tx_ccid); 85 } 86 87 static inline struct ccid2_hc_rx_sock *ccid2_hc_rx_sk(const struct sock *sk) 88 { 89 return ccid_priv(dccp_sk(sk)->dccps_hc_rx_ccid); 90 } 91 #endif /* _DCCP_CCID2_H_ */ 92