<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux.git/net/ipv4/tcp_timer.c, branch v2.6.29</title>
<subtitle>Linux kernel source tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/'/>
<entry>
<title>tcp: Stop scaring users with "treason uncloaked!"</title>
<updated>2008-12-19T06:27:42+00:00</updated>
<author>
<name>Matt Mackall</name>
<email>mpm@selenic.com</email>
</author>
<published>2008-12-19T03:54:22+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=6086ebca13ddc9cfaaa25248ba8ebef35103fb74'/>
<id>6086ebca13ddc9cfaaa25248ba8ebef35103fb74</id>
<content type='text'>
The original message was unhelpful and extremely alarming to our poor
users, despite its charm. Make it less frightening.

Signed-off-by: Matt Mackall &lt;mpm@selenic.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The original message was unhelpful and extremely alarming to our poor
users, despite its charm. Make it less frightening.

Signed-off-by: Matt Mackall &lt;mpm@selenic.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: Use a percpu_counter for orphan_count</title>
<updated>2008-11-26T05:17:14+00:00</updated>
<author>
<name>Eric Dumazet</name>
<email>dada1@cosmosbay.com</email>
</author>
<published>2008-11-26T05:17:14+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=dd24c00191d5e4a1ae896aafe33c6b8095ab4bd1'/>
<id>dd24c00191d5e4a1ae896aafe33c6b8095ab4bd1</id>
<content type='text'>
Instead of using one atomic_t per protocol, use a percpu_counter
for "orphan_count", to reduce cache line contention on
heavy duty network servers. 

Signed-off-by: Eric Dumazet &lt;dada1@cosmosbay.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Instead of using one atomic_t per protocol, use a percpu_counter
for "orphan_count", to reduce cache line contention on
heavy duty network servers. 

Signed-off-by: Eric Dumazet &lt;dada1@cosmosbay.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: clean up net/ipv4/ip_fragment.c tcp_timer.c ip_input.c</title>
<updated>2008-11-03T10:47:38+00:00</updated>
<author>
<name>Jianjun Kong</name>
<email>jianjun@zeuux.org</email>
</author>
<published>2008-11-03T10:47:38+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=fd3f8c4cb632c28ef915a535617a0fcddcfe3f80'/>
<id>fd3f8c4cb632c28ef915a535617a0fcddcfe3f80</id>
<content type='text'>
Signed-off-by: Jianjun Kong &lt;jianjun@zeuux.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Signed-off-by: Jianjun Kong &lt;jianjun@zeuux.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: replace NIPQUAD() in net/ipv4/ net/ipv6/</title>
<updated>2008-10-31T07:53:57+00:00</updated>
<author>
<name>Harvey Harrison</name>
<email>harvey.harrison@gmail.com</email>
</author>
<published>2008-10-31T07:53:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=673d57e72398edfedc93fb50ff58048077c9d587'/>
<id>673d57e72398edfedc93fb50ff58048077c9d587</id>
<content type='text'>
Using NIPQUAD() with NIPQUAD_FMT, %d.%d.%d.%d or %u.%u.%u.%u
can be replaced with %pI4

Signed-off-by: Harvey Harrison &lt;harvey.harrison@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Using NIPQUAD() with NIPQUAD_FMT, %d.%d.%d.%d or %u.%u.%u.%u
can be replaced with %pI4

Signed-off-by: Harvey Harrison &lt;harvey.harrison@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: replace %p6 with %pI6</title>
<updated>2008-10-29T19:52:50+00:00</updated>
<author>
<name>Harvey Harrison</name>
<email>harvey.harrison@gmail.com</email>
</author>
<published>2008-10-29T19:52:50+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=5b095d98928fdb9e3b75be20a54b7a6cbf6ca9ad'/>
<id>5b095d98928fdb9e3b75be20a54b7a6cbf6ca9ad</id>
<content type='text'>
Signed-off-by: Harvey Harrison &lt;harvey.harrison@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Signed-off-by: Harvey Harrison &lt;harvey.harrison@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: replace uses of NIP6_FMT with %p6</title>
<updated>2008-10-29T06:02:31+00:00</updated>
<author>
<name>Harvey Harrison</name>
<email>harvey.harrison@gmail.com</email>
</author>
<published>2008-10-28T23:09:23+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=0c6ce78abf6e228d44c3840edb8a4ae0c1299825'/>
<id>0c6ce78abf6e228d44c3840edb8a4ae0c1299825</id>
<content type='text'>
Signed-off-by: Harvey Harrison &lt;harvey.harrison@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Signed-off-by: Harvey Harrison &lt;harvey.harrison@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: wrap sk-&gt;sk_backlog_rcv()</title>
<updated>2008-10-07T21:18:42+00:00</updated>
<author>
<name>Peter Zijlstra</name>
<email>a.p.zijlstra@chello.nl</email>
</author>
<published>2008-10-07T21:18:42+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=c57943a1c96214ee68f3890bb6772841ffbfd606'/>
<id>c57943a1c96214ee68f3890bb6772841ffbfd606</id>
<content type='text'>
Wrap calling sk-&gt;sk_backlog_rcv() in a function. This will allow extending the
generic sk_backlog_rcv behaviour.

Signed-off-by: Peter Zijlstra &lt;a.p.zijlstra@chello.nl&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Wrap calling sk-&gt;sk_backlog_rcv() in a function. This will allow extending the
generic sk_backlog_rcv behaviour.

Signed-off-by: Peter Zijlstra &lt;a.p.zijlstra@chello.nl&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: convert BUG_TRAP to generic WARN_ON</title>
<updated>2008-07-26T04:43:18+00:00</updated>
<author>
<name>Ilpo Järvinen</name>
<email>ilpo.jarvinen@helsinki.fi</email>
</author>
<published>2008-07-26T04:43:18+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=547b792cac0a038b9dbf958d3c120df3740b5572'/>
<id>547b792cac0a038b9dbf958d3c120df3740b5572</id>
<content type='text'>
Removes legacy reinvent-the-wheel type thing. The generic
machinery integrates much better to automated debugging aids
such as kerneloops.org (and others), and is unambiguous due to
better naming. Non-intuively BUG_TRAP() is actually equal to
WARN_ON() rather than BUG_ON() though some might actually be
promoted to BUG_ON() but I left that to future.

I could make at least one BUILD_BUG_ON conversion.

Signed-off-by: Ilpo Järvinen &lt;ilpo.jarvinen@helsinki.fi&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Removes legacy reinvent-the-wheel type thing. The generic
machinery integrates much better to automated debugging aids
such as kerneloops.org (and others), and is unambiguous due to
better naming. Non-intuively BUG_TRAP() is actually equal to
WARN_ON() rather than BUG_ON() though some might actually be
promoted to BUG_ON() but I left that to future.

I could make at least one BUILD_BUG_ON conversion.

Signed-off-by: Ilpo Järvinen &lt;ilpo.jarvinen@helsinki.fi&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>mib: add net to NET_INC_STATS_BH</title>
<updated>2008-07-17T03:31:16+00:00</updated>
<author>
<name>Pavel Emelyanov</name>
<email>xemul@openvz.org</email>
</author>
<published>2008-07-17T03:31:16+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=de0744af1fe2d0a3d428f6af0f2fe1f6179b1a9c'/>
<id>de0744af1fe2d0a3d428f6af0f2fe1f6179b1a9c</id>
<content type='text'>
Signed-off-by: Pavel Emelyanov &lt;xemul@openvz.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Signed-off-by: Pavel Emelyanov &lt;xemul@openvz.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tcp: de-bloat a bit with factoring NET_INC_STATS_BH out</title>
<updated>2008-07-03T08:05:41+00:00</updated>
<author>
<name>Pavel Emelyanov</name>
<email>xemul@openvz.org</email>
</author>
<published>2008-07-03T08:05:41+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=40b215e594b65a3488576c9d24b367548e18902a'/>
<id>40b215e594b65a3488576c9d24b367548e18902a</id>
<content type='text'>
There are some places in TCP that select one MIB index to
bump snmp statistics like this:

	if (&lt;something&gt;)
		NET_INC_STATS_BH(&lt;some_id&gt;);
	else if (&lt;something_else&gt;)
		NET_INC_STATS_BH(&lt;some_other_id&gt;);
	...
	else
		NET_INC_STATS_BH(&lt;default_id&gt;);

or in a more tricky but still similar way.

On the other hand, this NET_INC_STATS_BH is a camouflaged
increment of percpu variable, which is not that small.

Factoring those cases out de-bloats 235 bytes on non-preemptible
i386 config and drives parts of the code into 80 columns.

add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-235 (-235)
function                                     old     new   delta
tcp_fastretrans_alert                       1437    1424     -13
tcp_dsack_set                                137     124     -13
tcp_xmit_retransmit_queue                    690     676     -14
tcp_try_undo_recovery                        283     265     -18
tcp_sacktag_write_queue                     1550    1515     -35
tcp_update_reordering                        162     106     -56
tcp_retransmit_timer                         990     904     -86

Signed-off-by: Pavel Emelyanov &lt;xemul@openvz.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
There are some places in TCP that select one MIB index to
bump snmp statistics like this:

	if (&lt;something&gt;)
		NET_INC_STATS_BH(&lt;some_id&gt;);
	else if (&lt;something_else&gt;)
		NET_INC_STATS_BH(&lt;some_other_id&gt;);
	...
	else
		NET_INC_STATS_BH(&lt;default_id&gt;);

or in a more tricky but still similar way.

On the other hand, this NET_INC_STATS_BH is a camouflaged
increment of percpu variable, which is not that small.

Factoring those cases out de-bloats 235 bytes on non-preemptible
i386 config and drives parts of the code into 80 columns.

add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-235 (-235)
function                                     old     new   delta
tcp_fastretrans_alert                       1437    1424     -13
tcp_dsack_set                                137     124     -13
tcp_xmit_retransmit_queue                    690     676     -14
tcp_try_undo_recovery                        283     265     -18
tcp_sacktag_write_queue                     1550    1515     -35
tcp_update_reordering                        162     106     -56
tcp_retransmit_timer                         990     904     -86

Signed-off-by: Pavel Emelyanov &lt;xemul@openvz.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
</feed>
