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net-next-2.6 [PATCH 1/1] dccp: ccids whitespace-cleanup / CodingStyle 

No code change, cosmetical changes only:

 * whitespace cleanup via scripts/cleanfile,
 * remove self-references to filename at top of files,
 * fix coding style (extraneous brackets),
 * fix documentation style (kernel-doc-nano-HOWTO).

Thanks are due to Ivo Augusto Calado who raised these issues by
submitting good-quality patches.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gerrit Renker 2009-09-12 07:47:01 +00:00 committed by David S. Miller
parent d136f1bd36
commit aa1b1ff099
11 changed files with 48 additions and 67 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/dccp/ccids/Kconfig
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@ -66,9 +66,9 @@ config IP_DCCP_CCID3_RTO
A value of 0 disables this feature by enforcing the value specified
in RFC 3448. The following values have been suggested as bounds for
experimental use:
* 16-20ms to match the typical multimedia inter-frame interval
* 100ms as a reasonable compromise [default]
* 1000ms corresponds to the lower TCP RTO bound (RFC 2988, 2.4)
* 16-20ms to match the typical multimedia inter-frame interval
* 100ms as a reasonable compromise [default]
* 1000ms corresponds to the lower TCP RTO bound (RFC 2988, 2.4)
The default of 100ms is a compromise between a large value for
efficient DCCP implementations, and a small value to avoid disrupting

2
net/dccp/ccids/ccid2.c
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@ -1,6 +1,4 @@
/*
* net/dccp/ccids/ccid2.c
*
* Copyright (c) 2005, 2006 Andrea Bittau <a.bittau@cs.ucl.ac.uk>
*
* Changes to meet Linux coding standards, and DCCP infrastructure fixes.

8
net/dccp/ccids/ccid2.h
View File

@ -1,6 +1,4 @@
/*
* net/dccp/ccids/ccid2.h
*
* Copyright (c) 2005 Andrea Bittau <a.bittau@cs.ucl.ac.uk>
*
* This program is free software; you can redistribute it and/or modify
@ -40,14 +38,14 @@ struct ccid2_seq {
#define CCID2_SEQBUF_LEN 1024
#define CCID2_SEQBUF_MAX 128
/** struct ccid2_hc_tx_sock - CCID2 TX half connection
*
/**
* struct ccid2_hc_tx_sock - CCID2 TX half connection
* @ccid2hctx_{cwnd,ssthresh,pipe}: as per RFC 4341, section 5
* @ccid2hctx_packets_acked - Ack counter for deriving cwnd growth (RFC 3465)
* @ccid2hctx_lastrtt -time RTT was last measured
* @ccid2hctx_rpseq - last consecutive seqno
* @ccid2hctx_rpdupack - dupacks since rpseq
*/
*/
struct ccid2_hc_tx_sock {
u32 ccid2hctx_cwnd;
u32 ccid2hctx_ssthresh;

5
net/dccp/ccids/ccid3.c
View File

@ -1,6 +1,4 @@
/*
* net/dccp/ccids/ccid3.c
*
* Copyright (c) 2007 The University of Aberdeen, Scotland, UK
* Copyright (c) 2005-7 The University of Waikato, Hamilton, New Zealand.
* Copyright (c) 2005-7 Ian McDonald <ian.mcdonald@jandi.co.nz>
@ -750,7 +748,8 @@ static int ccid3_hc_rx_insert_options(struct sock *sk, struct sk_buff *skb)
return 0;
}
/** ccid3_first_li - Implements [RFC 3448, 6.3.1]
/**
* ccid3_first_li - Implements [RFC 5348, 6.3.1]
*
* Determine the length of the first loss interval via inverse lookup.
* Assume that X_recv can be computed by the throughput equation

50
net/dccp/ccids/ccid3.h
View File

@ -1,6 +1,4 @@
/*
* net/dccp/ccids/ccid3.h
*
* Copyright (c) 2005-7 The University of Waikato, Hamilton, New Zealand.
* Copyright (c) 2007 The University of Aberdeen, Scotland, UK
*
@ -75,8 +73,8 @@ enum ccid3_hc_tx_states {
TFRC_SSTATE_TERM,
};
/** struct ccid3_hc_tx_sock - CCID3 sender half-connection socket
*
/**
* struct ccid3_hc_tx_sock - CCID3 sender half-connection socket
* @ccid3hctx_x - Current sending rate in 64 * bytes per second
* @ccid3hctx_x_recv - Receive rate in 64 * bytes per second
* @ccid3hctx_x_calc - Calculated rate in bytes per second
@ -119,9 +117,9 @@ struct ccid3_hc_tx_sock {
static inline struct ccid3_hc_tx_sock *ccid3_hc_tx_sk(const struct sock *sk)
{
struct ccid3_hc_tx_sock *hctx = ccid_priv(dccp_sk(sk)->dccps_hc_tx_ccid);
BUG_ON(hctx == NULL);
return hctx;
struct ccid3_hc_tx_sock *hctx = ccid_priv(dccp_sk(sk)->dccps_hc_tx_ccid);
BUG_ON(hctx == NULL);
return hctx;
}
/* TFRC receiver states */
@ -131,22 +129,22 @@ enum ccid3_hc_rx_states {
TFRC_RSTATE_TERM = 127,
};
/** struct ccid3_hc_rx_sock - CCID3 receiver half-connection socket
*
* @ccid3hcrx_x_recv - Receiver estimate of send rate (RFC 3448 4.3)
* @ccid3hcrx_rtt - Receiver estimate of rtt (non-standard)
* @ccid3hcrx_p - Current loss event rate (RFC 3448 5.4)
* @ccid3hcrx_last_counter - Tracks window counter (RFC 4342, 8.1)
* @ccid3hcrx_state - Receiver state, one of %ccid3_hc_rx_states
* @ccid3hcrx_bytes_recv - Total sum of DCCP payload bytes
* @ccid3hcrx_x_recv - Receiver estimate of send rate (RFC 3448, sec. 4.3)
* @ccid3hcrx_rtt - Receiver estimate of RTT
* @ccid3hcrx_tstamp_last_feedback - Time at which last feedback was sent
* @ccid3hcrx_tstamp_last_ack - Time at which last feedback was sent
* @ccid3hcrx_hist - Packet history (loss detection + RTT sampling)
* @ccid3hcrx_li_hist - Loss Interval database
* @ccid3hcrx_s - Received packet size in bytes
* @ccid3hcrx_pinv - Inverse of Loss Event Rate (RFC 4342, sec. 8.5)
/**
* struct ccid3_hc_rx_sock - CCID3 receiver half-connection socket
* @ccid3hcrx_x_recv - Receiver estimate of send rate (RFC 3448 4.3)
* @ccid3hcrx_rtt - Receiver estimate of rtt (non-standard)
* @ccid3hcrx_p - Current loss event rate (RFC 3448 5.4)
* @ccid3hcrx_last_counter - Tracks window counter (RFC 4342, 8.1)
* @ccid3hcrx_state - Receiver state, one of %ccid3_hc_rx_states
* @ccid3hcrx_bytes_recv - Total sum of DCCP payload bytes
* @ccid3hcrx_x_recv - Receiver estimate of send rate (RFC 3448, sec. 4.3)
* @ccid3hcrx_rtt - Receiver estimate of RTT
* @ccid3hcrx_tstamp_last_feedback - Time at which last feedback was sent
* @ccid3hcrx_tstamp_last_ack - Time at which last feedback was sent
* @ccid3hcrx_hist - Packet history (loss detection + RTT sampling)
* @ccid3hcrx_li_hist - Loss Interval database
* @ccid3hcrx_s - Received packet size in bytes
* @ccid3hcrx_pinv - Inverse of Loss Event Rate (RFC 4342, sec. 8.5)
*/
struct ccid3_hc_rx_sock {
u8 ccid3hcrx_last_counter:4;
@ -163,9 +161,9 @@ struct ccid3_hc_rx_sock {
static inline struct ccid3_hc_rx_sock *ccid3_hc_rx_sk(const struct sock *sk)
{
struct ccid3_hc_rx_sock *hcrx = ccid_priv(dccp_sk(sk)->dccps_hc_rx_ccid);
BUG_ON(hcrx == NULL);
return hcrx;
struct ccid3_hc_rx_sock *hcrx = ccid_priv(dccp_sk(sk)->dccps_hc_rx_ccid);
BUG_ON(hcrx == NULL);
return hcrx;
}
#endif /* _DCCP_CCID3_H_ */

7
net/dccp/ccids/lib/loss_interval.c
View File

@ -1,6 +1,4 @@
/*
* net/dccp/ccids/lib/loss_interval.c
*
* Copyright (c) 2007 The University of Aberdeen, Scotland, UK
* Copyright (c) 2005-7 The University of Waikato, Hamilton, New Zealand.
* Copyright (c) 2005-7 Ian McDonald <ian.mcdonald@jandi.co.nz>
@ -21,7 +19,7 @@ static const int tfrc_lh_weights[NINTERVAL] = { 10, 10, 10, 10, 8, 6, 4, 2 };
/* implements LIFO semantics on the array */
static inline u8 LIH_INDEX(const u8 ctr)
{
return (LIH_SIZE - 1 - (ctr % LIH_SIZE));
return LIH_SIZE - 1 - (ctr % LIH_SIZE);
}
/* the `counter' index always points at the next entry to be populated */
@ -129,7 +127,8 @@ static inline u8 tfrc_lh_is_new_loss(struct tfrc_loss_interval *cur,
(cur->li_is_closed || SUB16(new_loss->tfrchrx_ccval, cur->li_ccval) > 4);
}
/** tfrc_lh_interval_add - Insert new record into the Loss Interval database
/**
* tfrc_lh_interval_add - Insert new record into the Loss Interval database
* @lh: Loss Interval database
* @rh: Receive history containing a fresh loss event
* @calc_first_li: Caller-dependent routine to compute length of first interval

2
net/dccp/ccids/lib/loss_interval.h
View File

@ -1,8 +1,6 @@
#ifndef _DCCP_LI_HIST_
#define _DCCP_LI_HIST_
/*
* net/dccp/ccids/lib/loss_interval.h
*
* Copyright (c) 2007 The University of Aberdeen, Scotland, UK
* Copyright (c) 2005-7 The University of Waikato, Hamilton, New Zealand.
* Copyright (c) 2005-7 Ian McDonald <ian.mcdonald@jandi.co.nz>

4
net/dccp/ccids/lib/packet_history.c
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@ -1,6 +1,4 @@
/*
* net/dccp/packet_history.c
*
* Copyright (c) 2007 The University of Aberdeen, Scotland, UK
* Copyright (c) 2005-7 The University of Waikato, Hamilton, New Zealand.
*
@ -128,7 +126,7 @@ u32 tfrc_tx_hist_rtt(struct tfrc_tx_hist_entry *head, const u64 seqno,
/*
* Receiver History Routines
* Receiver History Routines
*/
static struct kmem_cache *tfrc_rx_hist_slab;

1
net/dccp/ccids/lib/packet_history.h
View File

@ -70,7 +70,6 @@ struct tfrc_rx_hist_entry {
/**
* tfrc_rx_hist - RX history structure for TFRC-based protocols
*
* @ring: Packet history for RTT sampling and loss detection
* @loss_count: Number of entries in circular history
* @loss_start: Movable index (for loss detection)

4
net/dccp/ccids/lib/tfrc.h
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@ -1,8 +1,6 @@
#ifndef _TFRC_H_
#define _TFRC_H_
/*
* net/dccp/ccids/lib/tfrc.h
*
* Copyright (c) 2007 The University of Aberdeen, Scotland, UK
* Copyright (c) 2005-6 The University of Waikato, Hamilton, New Zealand.
* Copyright (c) 2005-6 Ian McDonald <ian.mcdonald@jandi.co.nz>
@ -32,7 +30,7 @@ extern int tfrc_debug;
/* integer-arithmetic divisions of type (a * 1000000)/b */
static inline u64 scaled_div(u64 a, u64 b)
{
BUG_ON(b==0);
BUG_ON(b == 0);
return div64_u64(a * 1000000, b);
}

26
net/dccp/ccids/lib/tfrc_equation.c
View File

@ -1,6 +1,4 @@
/*
* net/dccp/ccids/lib/tfrc_equation.c
*
* Copyright (c) 2005 The University of Waikato, Hamilton, New Zealand.
* Copyright (c) 2005 Ian McDonald <ian.mcdonald@jandi.co.nz>
* Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
@ -79,10 +77,10 @@
}
With the given configuration, we have, with M = TFRC_CALC_X_ARRSIZE-1,
lookup[0][0] = g(1000000/(M+1)) = 1000000 * f(0.2%)
lookup[M][0] = g(1000000) = 1000000 * f(100%)
lookup[0][1] = g(TFRC_SMALLEST_P) = 1000000 * f(0.01%)
lookup[M][1] = g(TFRC_CALC_X_SPLIT) = 1000000 * f(5%)
lookup[0][0] = g(1000000/(M+1)) = 1000000 * f(0.2%)
lookup[M][0] = g(1000000) = 1000000 * f(100%)
lookup[0][1] = g(TFRC_SMALLEST_P) = 1000000 * f(0.01%)
lookup[M][1] = g(TFRC_CALC_X_SPLIT) = 1000000 * f(5%)
In summary, the two columns represent f(p) for the following ranges:
* The first column is for 0.002 <= p <= 1.0
@ -610,11 +608,10 @@ static inline u32 tfrc_binsearch(u32 fval, u8 small)
/**
* tfrc_calc_x - Calculate the send rate as per section 3.1 of RFC3448
*
* @s: packet size in bytes
* @R: RTT scaled by 1000000 (i.e., microseconds)
* @p: loss ratio estimate scaled by 1000000
* Returns X_calc in bytes per second (not scaled).
* @s: packet size in bytes
* @R: RTT scaled by 1000000 (i.e., microseconds)
* @p: loss ratio estimate scaled by 1000000
* Returns X_calc in bytes per second (not scaled).
*/
u32 tfrc_calc_x(u16 s, u32 R, u32 p)
{
@ -630,17 +627,17 @@ u32 tfrc_calc_x(u16 s, u32 R, u32 p)
return ~0U;
}
if (p <= TFRC_CALC_X_SPLIT) { /* 0.0000 < p <= 0.05 */
if (p <= TFRC_CALC_X_SPLIT) { /* 0.0000 < p <= 0.05 */
if (p < TFRC_SMALLEST_P) { /* 0.0000 < p < 0.0001 */
DCCP_WARN("Value of p (%d) below resolution. "
"Substituting %d\n", p, TFRC_SMALLEST_P);
index = 0;
} else /* 0.0001 <= p <= 0.05 */
} else /* 0.0001 <= p <= 0.05 */
index = p/TFRC_SMALLEST_P - 1;
f = tfrc_calc_x_lookup[index][1];
} else { /* 0.05 < p <= 1.00 */
} else { /* 0.05 < p <= 1.00 */
index = p/(1000000/TFRC_CALC_X_ARRSIZE) - 1;
f = tfrc_calc_x_lookup[index][0];
@ -661,7 +658,6 @@ u32 tfrc_calc_x(u16 s, u32 R, u32 p)
/**
* tfrc_calc_x_reverse_lookup - try to find p given f(p)
*
* @fvalue: function value to match, scaled by 1000000
* Returns closest match for p, also scaled by 1000000
*/