2 * Copyright (c) 2005 Andrea Bittau <a.bittau@cs.ucl.ac.uk>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 #ifndef _DCCP_CCID2_H_
19 #define _DCCP_CCID2_H_
21 #include <linux/dccp.h>
22 #include <linux/timer.h>
23 #include <linux/types.h>
25 /* NUMDUPACK parameter from RFC 4341, p. 6 */
32 unsigned long ccid2s_sent;
34 struct ccid2_seq *ccid2s_prev;
35 struct ccid2_seq *ccid2s_next;
38 #define CCID2_SEQBUF_LEN 1024
39 #define CCID2_SEQBUF_MAX 128
42 * struct ccid2_hc_tx_sock - CCID2 TX half connection
43 * @tx_{cwnd,ssthresh,pipe}: as per RFC 4341, section 5
44 * @tx_packets_acked: Ack counter for deriving cwnd growth (RFC 3465)
45 * @tx_lastrtt: time RTT was last measured
46 * @tx_rpseq: last consecutive seqno
47 * @tx_rpdupack: dupacks since rpseq
49 struct ccid2_hc_tx_sock {
54 struct ccid2_seq *tx_seqbuf[CCID2_SEQBUF_MAX];
56 struct ccid2_seq *tx_seqh;
57 struct ccid2_seq *tx_seqt;
61 unsigned long tx_lastrtt;
62 struct timer_list tx_rtotimer;
65 unsigned long tx_last_cong;
69 struct ccid2_hc_rx_sock {
73 static inline struct ccid2_hc_tx_sock *ccid2_hc_tx_sk(const struct sock *sk)
75 return ccid_priv(dccp_sk(sk)->dccps_hc_tx_ccid);
78 static inline struct ccid2_hc_rx_sock *ccid2_hc_rx_sk(const struct sock *sk)
80 return ccid_priv(dccp_sk(sk)->dccps_hc_rx_ccid);
82 #endif /* _DCCP_CCID2_H_ */