3deeadd74b
The current function ccid2_change_cwnd in effect makes only an assignment, as the test whether cwnd has reached 0 is only required when cwnd is halved. This patch simplifies the code by replacing the function with the assignment it performs. Furthermore, since ssthresh derives from cwnd and appears in many assignments and comparisons, the type of ssthresh has also been changed to match that of cwnd. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/*
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* net/dccp/ccids/ccid2.h
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*
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* Copyright (c) 2005 Andrea Bittau <a.bittau@cs.ucl.ac.uk>
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _DCCP_CCID2_H_
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#define _DCCP_CCID2_H_
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#include <linux/dccp.h>
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#include <linux/timer.h>
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#include <linux/types.h>
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#include "../ccid.h"
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/* NUMDUPACK parameter from RFC 4341, p. 6 */
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#define NUMDUPACK 3
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struct sock;
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struct ccid2_seq {
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u64 ccid2s_seq;
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unsigned long ccid2s_sent;
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int ccid2s_acked;
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struct ccid2_seq *ccid2s_prev;
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struct ccid2_seq *ccid2s_next;
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};
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#define CCID2_SEQBUF_LEN 1024
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#define CCID2_SEQBUF_MAX 128
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/** struct ccid2_hc_tx_sock - CCID2 TX half connection
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*
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* @ccid2hctx_ssacks - ACKs recv in slow start
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* @ccid2hctx_acks - ACKS recv in AI phase
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* @ccid2hctx_lastrtt -time RTT was last measured
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* @ccid2hctx_rpseq - last consecutive seqno
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* @ccid2hctx_rpdupack - dupacks since rpseq
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*/
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struct ccid2_hc_tx_sock {
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u32 ccid2hctx_cwnd;
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u32 ccid2hctx_ssthresh;
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int ccid2hctx_ssacks;
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int ccid2hctx_acks;
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int ccid2hctx_pipe;
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struct ccid2_seq *ccid2hctx_seqbuf[CCID2_SEQBUF_MAX];
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int ccid2hctx_seqbufc;
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struct ccid2_seq *ccid2hctx_seqh;
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struct ccid2_seq *ccid2hctx_seqt;
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long ccid2hctx_rto;
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long ccid2hctx_srtt;
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long ccid2hctx_rttvar;
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unsigned long ccid2hctx_lastrtt;
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struct timer_list ccid2hctx_rtotimer;
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u64 ccid2hctx_rpseq;
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int ccid2hctx_rpdupack;
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int ccid2hctx_sendwait;
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unsigned long ccid2hctx_last_cong;
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u64 ccid2hctx_high_ack;
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};
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struct ccid2_hc_rx_sock {
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int ccid2hcrx_data;
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};
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static inline struct ccid2_hc_tx_sock *ccid2_hc_tx_sk(const struct sock *sk)
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{
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return ccid_priv(dccp_sk(sk)->dccps_hc_tx_ccid);
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}
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static inline struct ccid2_hc_rx_sock *ccid2_hc_rx_sk(const struct sock *sk)
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{
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return ccid_priv(dccp_sk(sk)->dccps_hc_rx_ccid);
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}
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#endif /* _DCCP_CCID2_H_ */
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