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portmap: fix bug that new udp connection deletes all existing conntrack entries

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Calling AddPort before AddProtocol returns an error, which means ConntrackDeleteFilter has been called without port filter.

Signed-off-by: Sang Heon Lee <developistBV@gmail.com>
This commit is contained in:
Sang Heon Lee 2022-02-19 05:11:13 +09:00
parent 76307bf0f6
commit dca23ad451
1 changed files with 1 additions and 1 deletions
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2
pkg/utils/conntrack.go
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@ -62,8 +62,8 @@ func DeleteConntrackEntriesForDstIP(dstIP string, protocol uint8) error {
// by the given destination port, protocol and IP family // by the given destination port, protocol and IP family
func DeleteConntrackEntriesForDstPort(port uint16, protocol uint8, family netlink.InetFamily) error { func DeleteConntrackEntriesForDstPort(port uint16, protocol uint8, family netlink.InetFamily) error {
filter := &netlink.ConntrackFilter{} filter := &netlink.ConntrackFilter{}
filter.AddPort(netlink.ConntrackOrigDstPort, port)
filter.AddProtocol(protocol) filter.AddProtocol(protocol)
filter.AddPort(netlink.ConntrackOrigDstPort, port)
_, err := netlink.ConntrackDeleteFilter(netlink.ConntrackTable, family, filter) _, err := netlink.ConntrackDeleteFilter(netlink.ConntrackTable, family, filter)
if err != nil { if err != nil {