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proxy/iptables: Remove a no-op check

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There was code to deal with endpoints that have invalid/empty IP
addresses, but EndpointSlice validation already ensures that these
can't exist.
This commit is contained in:
Dan Winship 2021-11-02 17:19:16 -04:00
parent 6ab3dc6875
commit 3679639cf1
1 changed files with 1 additions and 13 deletions
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14
pkg/proxy/iptables/proxier.go
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@ -1387,12 +1387,6 @@ func (proxier *Proxier) syncProxyRules() {
// Now write loadbalancing & DNAT rules.
numReadyEndpoints := len(readyEndpointChains)
for i, endpointChain := range readyEndpointChains {
epIP := readyEndpoints[i].IP()
if epIP == "" {
// Error parsing this endpoint has been logged. Skip to next endpoint.
continue
}
// Balancing rules in the per-service chain.
args = append(args[:0], "-A", string(svcChain))
args = proxier.appendServiceCommentLocked(args, svcNameString)
@ -1411,18 +1405,12 @@ func (proxier *Proxier) syncProxyRules() {
// Every endpoint gets a chain, regardless of its state. This is required later since we may
// want to jump to endpoint chains that are terminating.
for i, endpointChain := range endpointChains {
epIP := endpoints[i].IP()
if epIP == "" {
// Error parsing this endpoint has been logged. Skip to next endpoint.
continue
}
// Rules in the per-endpoint chain.
args = append(args[:0], "-A", string(endpointChain))
args = proxier.appendServiceCommentLocked(args, svcNameString)
// Handle traffic that loops back to the originator with SNAT.
utilproxy.WriteLine(proxier.natRules, append(args,
"-s", utilproxy.ToCIDR(netutils.ParseIPSloppy(epIP)),
"-s", utilproxy.ToCIDR(netutils.ParseIPSloppy(endpoints[i].IP())),
"-j", string(KubeMarkMasqChain))...)
// Update client-affinity lists.
if svcInfo.SessionAffinityType() == v1.ServiceAffinityClientIP {