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BGP: Add support for flowspec (RFC 5575)

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This commit is contained in:
Ondrej Zajicek (work)
2016-12-07 18:28:07 +01:00
parent b7605d5c95
commit ac3ad139f6
6 changed files with 247 additions and 6 deletions
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16
proto/bgp/attrs.c
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@@ -1221,8 +1221,8 @@ bgp_init_prefix_table(struct bgp_channel *c)
{
HASH_INIT(c->prefix_hash, c->pool, 8);
c->prefix_slab = sl_new(c->pool, sizeof(struct bgp_prefix) +
net_addr_length[c->c.net_type]);
uint alen = net_addr_length[c->c.net_type];
c->prefix_slab = alen ? sl_new(c->pool, sizeof(struct bgp_prefix) + alen) : NULL;
}
static struct bgp_prefix *
@@ -1237,7 +1237,11 @@ bgp_get_prefix(struct bgp_channel *c, net_addr *net, u32 path_id)
return px;
}
px = sl_alloc(c->prefix_slab);
if (c->prefix_slab)
px = sl_alloc(c->prefix_slab);
else
px = mb_alloc(c->pool, sizeof(struct bgp_prefix) + net->length);
px->buck_node.next = NULL;
px->buck_node.prev = NULL;
px->hash = hash;
@@ -1254,7 +1258,11 @@ bgp_free_prefix(struct bgp_channel *c, struct bgp_prefix *px)
{
rem_node(&px->buck_node);
HASH_REMOVE2(c->prefix_hash, PXH, c->pool, px);
sl_free(c->prefix_slab, px);
if (c->prefix_slab)
sl_free(c->prefix_slab, px);
else
mb_free(px);
}