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authorOndrej Zajicek <santiago@crfreenet.org>2011-05-16 12:39:55 +0200
committerOndrej Zajicek <santiago@crfreenet.org>2011-05-16 12:39:55 +0200
commitb54ad333b3c8b486b059f6c0e1afc8c35b64ebea (patch)
treec392b777d6c10a10fd45efe34c048a08ff34b0d5
parente8b89a610443f32b901801668cbae634e13f3e68 (diff)
downloadbird-b54ad333b3c8b486b059f6c0e1afc8c35b64ebea.tar
bird-b54ad333b3c8b486b059f6c0e1afc8c35b64ebea.zip
Documentation update.
-rw-r--r--doc/bird.sgml10
1 files changed, 6 insertions, 4 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml
index 01e70e8..fbda9f4 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -753,8 +753,10 @@ incompatible with each other (that is to prevent you from shooting in the foot).
sets.
For pair sets, expressions like <cf/(123,*)/ can be used to denote ranges (in
that case <cf/(123,0)..(123,65535)/). You can also use <cf/(123,5..100)/ for range
- <cf/(123,5)..(123,100)/. You can also use <cf/(*,123)/ which is translated as
- <cf/(0,123) , (1,123) , (2,123) , ... , (65535, 123)/
+ <cf/(123,5)..(123,100)/. You can also use <cf/*/ and <cf/a..b/ expressions
+ in the first part of a pair, note that such expressions are translated to a set
+ of intervals, which may be memory intensive. E.g. <cf/(*,4..20)/ is translated to
+ <cf/(0,4..20), (1,4..20), (2,4..20), ... (65535, 4..20)/.
You can also use expressions for both, pair sets and int sets. However it must
be possible to evaluate these expressions before daemon boots. So you can use
only constants inside them. E.g.
@@ -763,8 +765,8 @@ incompatible with each other (that is to prevent you from shooting in the foot).
int set odds;
pair set ps;
- odds = [ one, (2+1), (6-one), (2*2*2-1), 9, 11 ];
- ps = [ (1,(one+one)), (3,4)..(4,8), (5,*), (6,3..6) ];
+ odds = [ one, (2+1), (6-one), (2*2*2-1), 9, 11 ];
+ ps = [ (1,one+one), (3,4)..(4,8), (5,*), (6,3..6), (7..9,*) ];
</code>
Sets of prefixes are special: their literals does not allow ranges, but allows