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Don't generate multihop routes unnecessarily

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
This commit is contained in:
Tom Eastep 2017-06-18 09:30:51 -07:00
parent 66d1fbd3aa
commit 2f5687c65a
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GPG Key ID: 96E6B3F2423A4D10
1 changed files with 26 additions and 5 deletions
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31
Shorewall/Perl/Shorewall/Providers.pm
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@ -64,6 +64,8 @@ our @load_interfaces;
our $balancing;
our $fallback;
our $balanced_providers;
our $fallback_providers;
our $metrics;
our $first_default_route;
our $first_fallback_route;
@ -99,6 +101,8 @@ sub initialize( $ ) {
%provider_interfaces = ();
@load_interfaces = ();
$balancing = 0;
$balanced_providers = 0;
$fallback_providers = 0;
$fallback = 0;
$metrics = 0;
$first_default_route = 1;
@ -323,7 +327,13 @@ sub balance_default_route( $$$$ ) {
emit '';
if ( $first_default_route ) {
if ( $gateway ) {
if ( $balanced_providers == 1 ) {
if ( $gateway ) {
emit "DEFAULT_ROUTE=\"via $gateway dev $interface $realm\"";
} else {
emit "DEFAULT_ROUTE=\"dev $interface $realm\"";
}
} elsif ( $gateway ) {
emit "DEFAULT_ROUTE=\"nexthop via $gateway dev $interface weight $weight $realm\"";
} else {
emit "DEFAULT_ROUTE=\"nexthop dev $interface weight $weight $realm\"";
@ -347,7 +357,13 @@ sub balance_fallback_route( $$$$ ) {
emit '';
if ( $first_fallback_route ) {
if ( $gateway ) {
if ( $balanced_providers == 1 ) {
if ( $gateway ) {
emit "FALLBACK_ROUTE=\"via $gateway dev $interface $realm\"";
} else {
emit "FALLBACK_ROUTE=\"dev $interface $realm\"";
}
} elsif ( $gateway ) {
emit "FALLBACK_ROUTE=\"nexthop via $gateway dev $interface weight $weight $realm\"";
} else {
emit "FALLBACK_ROUTE=\"nexthop dev $interface weight $weight $realm\"";
@ -593,7 +609,12 @@ sub process_a_provider( $ ) {
}
}
fatal_error q(The 'balance' and 'fallback' options are mutually exclusive) if $balance && $default;
if ( $balance ) {
fatal_error q(The 'balance' and 'fallback' options are mutually exclusive) if $default;
$balanced_providers++;
} elsif ( $default ) {
$fallback_providers++;
}
if ( $load ) {
fatal_error q(The 'balance=<weight>' and 'load=<load-factor>' options are mutually exclusive) if $balance > 1;
@ -1534,9 +1555,9 @@ sub finish_providers() {
} else {
emit ( " if echo \$DEFAULT_ROUTE | grep -q 'nexthop.+nexthop'; then",
" qt \$IP -6 route delete default scope global table $table \$DEFAULT_ROUTE",
" run_ip -6 route add default scope global table $table \$DEFAULT_ROUTE",
" run_ip route add default scope global table $table \$DEFAULT_ROUTE",
' else',
" run_ip -6 route replace default scope global table $table \$DEFAULT_ROUTE",
" run_ip route replace default scope global table $table \$DEFAULT_ROUTE",
' fi',
'' );
}