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1.0.20-pre2: new flag -r <len>, allowing for generation of subset of

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more-specific routes. Only more-specific with prefix-length of <len> or
more are allowed.
This commit is contained in:
Alexandre Snarskii
2014-05-01 17:53:19 +04:00
parent 89d8643c80
commit 795bc91f23
7 changed files with 173 additions and 76 deletions
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59
sx_prefix.c
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@@ -695,8 +695,67 @@ sx_radix_tree_refine(struct sx_radix_tree* tree, unsigned refine)
if(tree && tree->head) return sx_radix_node_refine(tree->head, refine);
return 0;
};
static void
setGlueFrom(struct sx_radix_node* node, void* udata)
{
unsigned refine=*(unsigned*)udata;
if(node && node->prefix.masklen <= refine) {
node->isGlue=1;
};
};
static int
sx_radix_node_refineLow(struct sx_radix_node* node, unsigned refineLow)
{
if(!node->isGlue && node->prefix.masklen<=refineLow) {
if(!node->isAggregate) {
node->isAggregate=1;
node->aggregateLow=refineLow;
if(node->prefix.family == AF_INET) {
node->aggregateHi=32;
} else {
node->aggregateHi=128;
}
} else {
node->aggregateLow=refineLow;
};
if(node->l) {
sx_radix_node_foreach(node->l, setGlueFrom, &refineLow);
sx_radix_node_refineLow(node->l, refineLow);
};
if(node->r) {
sx_radix_node_foreach(node->r, setGlueFrom, &refineLow);
sx_radix_node_refineLow(node->r, refineLow);
};
} else if(!node->isGlue && node->prefix.masklen==refineLow) {
/* not setting aggregate in this case */
if(node->l) sx_radix_node_refineLow(node->l, refineLow);
if(node->r) sx_radix_node_refineLow(node->r, refineLow);
} else if(node->isGlue) {
if(node->r) sx_radix_node_refineLow(node->r, refineLow);
if(node->l) sx_radix_node_refineLow(node->l, refineLow);
} else {
/* node->prefix.masklen > refine */
/* do nothing, should pass specifics 'as is'. Also, do not
process any embedded routes, their masklen is bigger, too...
node->isGlue=1;
if(node->l) sx_radix_node_foreach(node->l, setGlue, NULL);
if(node->r) sx_radix_node_foreach(node->r, setGlue, NULL);
*/
};
return 0;
};
int
sx_radix_tree_refineLow(struct sx_radix_tree* tree, unsigned refineLow)
{
if(tree && tree->head)
return sx_radix_node_refineLow(tree->head, refineLow);
return 0;
};
#if SX_PTREE_TEST
int