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Add a PROBABILITY column to the tcrules file.

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
This commit is contained in:
Tom Eastep 2012-01-06 12:54:37 -08:00
parent c4768d4a4a
commit 6f5ab698b4
8 changed files with 74 additions and 9 deletions
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17
Shorewall/Perl/Shorewall/Chains.pm
View File

@ -183,6 +183,7 @@ our %EXPORT_TAGS = (
do_helper
validate_helper
do_headers
do_probability
do_condition
have_ipset_rules
record_runtime_address
@ -4123,7 +4124,21 @@ sub do_headers( $ ) {
}
}
"-m ipv6header ${invert}--header ${headers} ${soft}";
"-m ipv6header ${invert}--header ${headers} ${soft} ";
}
sub do_probability( $ ) {
my $probability = shift;
return '' if $probability eq '-';
require_capability 'STATISTIC_MATCH', 'A non-empty PROBABILITY column', 's';
my $invert = $probability =~ s/^!// ? '! ' : "";
fatal_error "Invalid PROBABILITY ($probability)" unless $probability =~ /^0?\.\d{1,8}$/;
"-m statistic --mode random --probability $probability ";
}
#

15
Shorewall/Perl/Shorewall/Tc.pm
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@ -194,8 +194,15 @@ sub initialize( $ ) {
}
sub process_tc_rule( ) {
my ( $originalmark, $source, $dest, $proto, $ports, $sports, $user, $testval, $length, $tos , $connbytes, $helper, $headers ) =
split_line1 'tcrules file', { mark => 0, source => 1, dest => 2, proto => 3, dport => 4, sport => 5, user => 6, test => 7, length => 8, tos => 9, connbytes => 10, helper => 11, headers => 12 };
my ( $originalmark, $source, $dest, $proto, $ports, $sports, $user, $testval, $length, $tos , $connbytes, $helper, $headers, $probability );
if ( $family == F_IPV4 ) {
( $originalmark, $source, $dest, $proto, $ports, $sports, $user, $testval, $length, $tos , $connbytes, $helper, $probability ) =
split_line1 'tcrules file', { mark => 0, source => 1, dest => 2, proto => 3, dport => 4, sport => 5, user => 6, test => 7, length => 8, tos => 9, connbytes => 10, helper => 11, probability => 12 };
$headers = '-';
} else {
( $originalmark, $source, $dest, $proto, $ports, $sports, $user, $testval, $length, $tos , $connbytes, $helper, $headers, $probability ) =
split_line1 'tcrules file', { mark => 0, source => 1, dest => 2, proto => 3, dport => 4, sport => 5, user => 6, test => 7, length => 8, tos => 9, connbytes => 10, helper => 11, headers => 12, probability => 13 };
}
our @tccmd;
@ -243,6 +250,7 @@ sub process_tc_rule( ) {
$source = '';
} elsif ( $source =~ s/^($fw):// ) {
fatal_error ":F is not allowed when the SOURCE is the firewall" if ( $designator || '' ) eq 'F';
$chain = 'tcout';
}
}
@ -497,7 +505,8 @@ sub process_tc_rule( ) {
do_tos( $tos ) .
do_connbytes( $connbytes ) .
do_helper( $helper ) .
do_headers( $headers ) ,
do_headers( $headers ) .
do_probability( $probability ) ,
$source ,
$dest ,
'' ,

5
Shorewall/configfiles/tcrules
View File

@ -9,6 +9,7 @@
#
# See http://shorewall.net/PacketMarking.html for a detailed description of
# the Netfilter/Shorewall packet marking mechanism.
######################################################################################################################
#MARK SOURCE DEST PROTO DEST SOURCE USER TEST LENGTH TOS CONNBYTES HELPER
######################################################################################################################################
#MARK SOURCE DEST PROTO DEST SOURCE USER TEST LENGTH TOS CONNBYTES HELPER PROBABILITY
# PORT(S) PORT(S)

4
Shorewall6/configfiles/tcrules
View File

@ -9,6 +9,6 @@
#
# See http://shorewall.net/PacketMarking.html for a detailed description of
# the Netfilter/Shorewall packet marking mechanism.
##################################################################################################################################
#MARK SOURCE DEST PROTO DEST SOURCE USER TEST LENGTH TOS CONNBYTES HELPER HEADERS
##############################################################################################################################################
#MARK SOURCE DEST PROTO DEST SOURCE USER TEST LENGTH TOS CONNBYTES HELPER HEADERS PROBABILITY
# PORT(S) PORT(S)

7
manpages/shorewall-route_rules.xml
View File

@ -32,7 +32,7 @@
<variablelist>
<varlistentry>
<term><emphasis role="bold">SOURCE</emphasis> (Optional) - {<emphasis
role="bold">-</emphasis>|<emphasis>interface</emphasis>|<emphasis>address</emphasis>|<emphasis>interface</emphasis><firstterm>:</firstterm><emphasis>address</emphasis>}</term>
role="bold">-</emphasis>|[&amp;]<emphasis>interface</emphasis>|<emphasis>address</emphasis>|<emphasis>interface</emphasis><firstterm>:</firstterm><emphasis>address</emphasis>}</term>
<listitem>
<para>An ip <emphasis>address</emphasis> (network or host) that
@ -41,6 +41,11 @@
and an address. If the device <emphasis role="bold">lo</emphasis> is
specified, the packet must originate from the firewall
itself.</para>
<para>Beginning with Shorewall 4.5.0, you may specify
&amp;<replaceable>interface</replaceable> in this column to indicate
that the source is the primary IP address of the named
interface.</para>
</listitem>
</varlistentry>

15
manpages/shorewall-tcrules.xml
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@ -827,6 +827,21 @@ SAME $FW 0.0.0.0/0 tcp 80,443</programlisting>
4:T 0.0.0.0/0 0.0.0.0/0 TCP - - - - - - - ftp</programlisting></para>
</listitem>
</varlistentry>
<varlistentry>
<term><emphasis role="bold">PROBABILITY</emphasis> -
[probability]</term>
<listitem>
<para>Added in Shorewall 4.5.0. When non-empty, requires the
<firstterm>Statistics Match</firstterm> capability in your kernel
and ip6tables and causes the rule to match randomly but with the
given <replaceable>probability</replaceable>. The
<replaceable>probability</replaceable> is a number 0 &lt;
<replaceable>probability</replaceable> &lt;= 1 and may be expressed
at up to 8 decimal points of precision.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>

5
manpages6/shorewall6-route_rules.xml
View File

@ -41,6 +41,11 @@
and an address. If the device <emphasis role="bold">lo</emphasis> is
specified, the packet must originate from the firewall
itself.</para>
<para>Beginning with Shorewall 4.5.0, you may specify
&amp;<replaceable>interface</replaceable> in this column to indicate
that the source is the primary IP address of the named
interface.</para>
</listitem>
</varlistentry>

15
manpages6/shorewall6-tcrules.xml
View File

@ -778,6 +778,21 @@ SAME $FW 0.0.0.0/0 tcp 80,443</programlisting>
role="bold">!</emphasis> is omitted.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><emphasis role="bold">PROBABILITY</emphasis> -
[probability]</term>
<listitem>
<para>Added in Shorewall 4.5.0. When non-empty, requires the
<firstterm>Statistics Match</firstterm> capability in your kernel
and ip6tables and causes the rule to match randomly but with the
given <replaceable>probability</replaceable>. The
<replaceable>probability</replaceable> is a number 0 &lt;
<replaceable>probability</replaceable> &lt;= 1 and may be expressed
at up to 8 decimal points of precision.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>