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Redo route code (#2422)

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Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commit is contained in:
Kristoffer Dalby 2025-02-26 07:22:55 -08:00 • committed by GitHub
parent 16868190c8
commit 7891378f57
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GPG key ID: B5690EEEBB952194
53 changed files with 2977 additions and 6251 deletions
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13
hscontrol/policy/acls.go
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@ -243,6 +243,7 @@ func (pol *ACLPolicy) CompileFilterRules(
// ReduceFilterRules takes a node and a set of rules and removes all rules and destinations
// that are not relevant to that particular node.
func ReduceFilterRules(node *types.Node, rules []tailcfg.FilterRule) []tailcfg.FilterRule {
// TODO(kradalby): Make this nil and not alloc unless needed
ret := []tailcfg.FilterRule{}
for _, rule := range rules {
@ -264,13 +265,11 @@ func ReduceFilterRules(node *types.Node, rules []tailcfg.FilterRule) []tailcfg.F
// If the node exposes routes, ensure they are note removed
// when the filters are reduced.
if node.Hostinfo != nil {
if len(node.Hostinfo.RoutableIPs) > 0 {
for _, routableIP := range node.Hostinfo.RoutableIPs {
if expanded.OverlapsPrefix(routableIP) {
dests = append(dests, dest)
continue DEST_LOOP
}
if len(node.SubnetRoutes()) > 0 {
for _, routableIP := range node.SubnetRoutes() {
if expanded.OverlapsPrefix(routableIP) {
dests = append(dests, dest)
continue DEST_LOOP
}
}
}