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Filter refactoring: dropped the recursion from the interpreter

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This is a major change of how the filters are interpreted. If everything
works how it should, it should not affect you unless you are hacking the
filters themselves.

Anyway, this change should make a huge improvement in the filter performance
as previous benchmarks showed that our major problem lies in the
recursion itself.

There are also some changes in nest and protocols, related mostly to
spreading const declarations throughout the whole BIRD and also to
refactored dynamic attribute definitions. The need of these came up
during the whole work and it is too difficult to split out these
not-so-related changes.
This commit is contained in:
Maria Matejka
2018-12-27 14:26:11 +01:00
parent 967b88d938
commit 4c553c5a5b
43 changed files with 1699 additions and 1269 deletions
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18
nest/a-path_test.c
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@@ -34,26 +34,24 @@ t_as_path_match(void)
first_prepended = last_prepended = 0;
struct linpool *lp = lp_new_default(&root_pool);
struct f_path_mask mask[AS_PATH_LENGTH] = {};
int i;
for (i = 0; i < AS_PATH_LENGTH; i++)
struct f_path_mask *mask = alloca(sizeof(struct f_path_mask) + AS_PATH_LENGTH * sizeof(struct f_path_mask_item));
mask->len = AS_PATH_LENGTH;
for (int i = AS_PATH_LENGTH - 1; i >= 0; i--)
{
u32 val = bt_random();
as_path = as_path_prepend(lp, as_path, val);
bt_debug("Prepending ASN: %10u \n", val);
if (i == 0)
first_prepended = val;
if (i == AS_PATH_LENGTH-1)
last_prepended = val;
if (i == AS_PATH_LENGTH-1)
first_prepended = val;
mask[i].kind = PM_ASN;
mask[i].val = val;
if (i)
mask[i].next = &mask[i-1];
mask->item[i].kind = PM_ASN;
mask->item[i].asn = val;
}
bt_assert_msg(as_path_match(as_path, &mask[AS_PATH_LENGTH-1]), "Mask should match with AS path");
bt_assert_msg(as_path_match(as_path, mask), "Mask should match with AS path");
u32 asn;