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91f0ebf7b6
1. No need for ->ccid_init nor ->ccid_exit, this is what module_{init,exit}
does and anynways neither ccid2 nor ccid3 were using it.
2. Rename struct ccid to struct ccid_operations and introduce struct ccid
with a pointer to ccid_operations and rigth after it the rx or tx
private state.
3. Remove the pointer to the state of the half connections from struct
dccp_sock, now its derived thru ccid_priv() from the ccid pointer.
Now we also can implement the setsockopt for changing the CCID easily as
no ccid init routines can affect struct dccp_sock in any way that prevents
other CCIDs from working if a CCID switch operation is asked by apps.
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
86 lines
2.4 KiB
C
86 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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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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/** 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_sent - packets sent in this window
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* @ccid2hctx_lastrtt -time RTT was last measured
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* @ccid2hctx_arsent - packets sent [ack ratio]
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* @ccid2hctx_ackloss - ack was lost in this win
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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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int ccid2hctx_cwnd;
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int ccid2hctx_ssacks;
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int ccid2hctx_acks;
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int ccid2hctx_ssthresh;
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int ccid2hctx_pipe;
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int ccid2hctx_numdupack;
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struct ccid2_seq *ccid2hctx_seqbuf;
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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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int ccid2hctx_sent;
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unsigned long ccid2hctx_lastrtt;
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struct timer_list ccid2hctx_rtotimer;
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unsigned long ccid2hctx_arsent;
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int ccid2hctx_ackloss;
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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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};
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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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