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Test all ones UDP checksum is valid

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...after observing the all ones checksum in an outgoing packet.

PiperOrigin-RevId: 429671893
This commit is contained in:
Ghanan Gowripalan
2022-02-18 16:33:39 -08:00
committed by gVisor bot
parent 1f03087a84
commit ec0db35a80
1 changed files with 8 additions and 0 deletions
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pkg/tcpip/transport/udp/udp_test.go
+8
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@@ -2049,7 +2049,15 @@ func TestChecksumWithZeroValueOnesComplementSum(t *testing.T) {
t.Fatal("Packet wasn't written out")
}
v := stack.PayloadSince(pkt.NetworkHeader())
checker.IPv6(t, stack.PayloadSince(pkt.NetworkHeader()), checker.UDP(checker.TransportChecksum(math.MaxUint16)))
// Make sure the all ones checksum is valid.
hdr := header.IPv6(v)
udp := header.UDP(hdr.Payload())
if src, dst, payloadXsum := hdr.SourceAddress(), hdr.DestinationAddress(), header.Checksum(udp.Payload(), 0); !udp.IsChecksumValid(src, dst, payloadXsum) {
t.Errorf("got udp.IsChecksumValid(%s, %s, %d) = false, want = true", src, dst, payloadXsum)
}
}
}