8c60f3fab5
This also changes the list_for_each_entry_safe_continue behaviour to match its kerneldoc comment, that is, to start after the pos passed. Also adds several helper functions from previously open coded fragments, making the code more clear. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
120 lines
4.2 KiB
C
120 lines
4.2 KiB
C
/*
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* net/dccp/ccids/ccid3.h
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*
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* Copyright (c) 2005 The University of Waikato, Hamilton, New Zealand.
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*
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* An implementation of the DCCP protocol
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*
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* This code has been developed by the University of Waikato WAND
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* research group. For further information please see http://www.wand.net.nz/
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* or e-mail Ian McDonald - iam4@cs.waikato.ac.nz
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*
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* This code also uses code from Lulea University, rereleased as GPL by its
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* authors:
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* Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon
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*
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* Changes to meet Linux coding standards, to make it meet latest ccid3 draft
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* and to make it work as a loadable module in the DCCP stack written by
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* Arnaldo Carvalho de Melo <acme@conectiva.com.br>.
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*
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* Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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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_CCID3_H_
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#define _DCCP_CCID3_H_
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#include <linux/types.h>
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#include <linux/list.h>
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struct ccid3_options_received {
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u64 ccid3or_seqno:48,
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ccid3or_loss_intervals_idx:16;
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u16 ccid3or_loss_intervals_len;
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u32 ccid3or_loss_event_rate;
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u32 ccid3or_receive_rate;
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};
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/** struct ccid3_hc_tx_sock - CCID3 sender half connection congestion control block
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*
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* @ccid3hctx_state - Sender state
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* @ccid3hctx_x - Current sending rate
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* @ccid3hctx_x_recv - Receive rate
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* @ccid3hctx_x_calc - Calculated send (?) rate
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* @ccid3hctx_s - Packet size
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* @ccid3hctx_rtt - Estimate of current round trip time in usecs
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* @@ccid3hctx_p - Current loss event rate (0-1) scaled by 1000000
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* @ccid3hctx_last_win_count - Last window counter sent
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* @ccid3hctx_t_last_win_count - Timestamp of earliest packet with last_win_count value sent
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* @ccid3hctx_no_feedback_timer - Handle to no feedback timer
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* @ccid3hctx_idle - FIXME
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* @ccid3hctx_t_ld - Time last doubled during slow start
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* @ccid3hctx_t_nom - Nominal send time of next packet
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* @ccid3hctx_t_ipi - Interpacket (send) interval
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* @ccid3hctx_delta - Send timer delta
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* @ccid3hctx_hist - Packet history
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*/
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struct ccid3_hc_tx_sock {
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u32 ccid3hctx_x;
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u32 ccid3hctx_x_recv;
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u32 ccid3hctx_x_calc;
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u16 ccid3hctx_s;
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u32 ccid3hctx_rtt;
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u32 ccid3hctx_p;
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u8 ccid3hctx_state;
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u8 ccid3hctx_last_win_count;
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u8 ccid3hctx_idle;
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struct timeval ccid3hctx_t_last_win_count;
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struct timer_list ccid3hctx_no_feedback_timer;
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struct timeval ccid3hctx_t_ld;
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struct timeval ccid3hctx_t_nom;
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u32 ccid3hctx_t_ipi;
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u32 ccid3hctx_delta;
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struct list_head ccid3hctx_hist;
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struct ccid3_options_received ccid3hctx_options_received;
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};
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struct ccid3_loss_interval_hist_entry {
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struct list_head ccid3lih_node;
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u64 ccid3lih_seqno:48,
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ccid3lih_win_count:4;
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u32 ccid3lih_interval;
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};
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struct ccid3_hc_rx_sock {
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u64 ccid3hcrx_seqno_last_counter:48,
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ccid3hcrx_state:8,
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ccid3hcrx_last_counter:4;
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unsigned long ccid3hcrx_rtt;
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u32 ccid3hcrx_p;
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u32 ccid3hcrx_bytes_recv;
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struct timeval ccid3hcrx_tstamp_last_feedback;
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struct timeval ccid3hcrx_tstamp_last_ack;
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struct list_head ccid3hcrx_hist;
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struct list_head ccid3hcrx_loss_interval_hist;
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u16 ccid3hcrx_s;
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u32 ccid3hcrx_pinv;
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u32 ccid3hcrx_elapsed_time;
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u32 ccid3hcrx_x_recv;
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};
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#define ccid3_hc_tx_field(s,field) (s->dccps_hc_tx_ccid_private == NULL ? 0 : \
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((struct ccid3_hc_tx_sock *)s->dccps_hc_tx_ccid_private)->ccid3hctx_##field)
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#define ccid3_hc_rx_field(s,field) (s->dccps_hc_rx_ccid_private == NULL ? 0 : \
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((struct ccid3_hc_rx_sock *)s->dccps_hc_rx_ccid_private)->ccid3hcrx_##field)
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#endif /* _DCCP_CCID3_H_ */
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