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Commit Graph

14 Commits

Author SHA1 Message Date
Ondrej Zajicek
92a8565547 Filter: Add some minor functions for f_tree and EC
Add some supportive functions for f_tree and EC. These functions are used
by L3VPN code.
2022-10-03 20:18:12 +02:00
Ondrej Zajicek (work)
cb339a3067 Filter: Implement for loops
For loops allow to iterate over elements in compound data like BGP paths
or community lists. The syntax is:

  for [ <type> ] <variable> in <expr> do <command-body>
2022-06-27 21:13:32 +02:00
Ondrej Zajicek (work)
fb1d8f6513 Filter: Apply constant promotion for FI_EQ / FI_NEQ
Equality comparison is defined on all values, even of different
types, but we still want to do constant promotion if possible.
2022-06-27 21:13:31 +02:00
Alexander Zubkov
b2d6d2948a Filter: Add literal for empty set
Add literal for empty set [], which works both for tree-based sets
and prefix sets by using existing constant promotion mechanism.

Minor changes by committer.
2022-06-27 21:13:31 +02:00
Alexander Zubkov
0e1fd7ea6a Filter: Add operators to find minimum and maximum element of sets
Add operators .min and .max to find minumum or maximum element in sets
of types: clist, eclist, lclist. Example usage:

bgp_community.min
bgp_ext_community.max
filter(bgp_large_community, [(as1, as2, *)]).min

Signed-off-by: Alexander Zubkov <green@qrator.net>
2021-12-28 04:07:09 +01:00
Kazuki Yamaguchi
a948cf9a5c Filter: Improve handling of sets in BGP path masks
Compare the content of PM_ASN_SET in path masks. A reconfiguration
was not properly triggering a reload of affected protocols when the
members of a set in a path mask change.

Also, update the printing code to so that it can display sets in a path
mask.
2020-06-28 15:37:01 +02:00
Kazuki Yamaguchi
4ef0a96639 Filter: Fix comparison of BGP path mask
Add a missing return statement. Path masks with the same length were all
considered the same. Comparing two with different length would cause
out-of-bounds memory access.
2020-06-28 15:33:26 +02:00
Ondrej Zajicek (work)
ec430a7fee Nest: Implement BGP path mask loop operator
Implement regex-like '+' operator in BGP path masks to match previous
path mask item multiple times. This is useful as ASNs may appear
multiple times in paths due to path prepending for traffic engineering
purposes.
2020-05-18 16:25:08 +02:00
Ondrej Zajicek (work)
87512e9751 Filter: Improve typecheck error messages 2019-11-05 15:30:16 +01:00
Maria Matejka
b40c0f028f Filter: Pre-evaluation of constant expressions 2019-07-02 10:45:53 +02:00
Maria Matejka
a84b8b6ebb Revert "Filter: Dropped the setter instructions in favor of direct result storage."
This reverts commit bd91338246.
2019-06-19 14:09:57 +02:00
Maria Matejka
bd91338246 Filter: Dropped the setter instructions in favor of direct result storage.
This should help filter performance a bit.
2019-06-03 10:41:35 +02:00
Maria Matejka
132529ce89 Filter: merged filter compare functions into common M4 file 2019-02-20 22:30:55 +01:00
Maria Matejka
5289304519 Filter data manipulation functions separated to their file 2019-02-20 22:30:54 +01:00