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Implement UDP cheksum verification.

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Test:
 - TestIncrementChecksumErrors

Fixes #2943

PiperOrigin-RevId: 317348158
This commit is contained in:
gVisor bot
2020-06-19 11:43:20 -07:00
parent a609fff9d1
commit d962f9f384
5 changed files with 276 additions and 71 deletions
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pkg/sentry/socket/netstack/netstack.go
+1
View File
@@ -191,6 +191,7 @@ var Metrics = tcpip.Stats{
MalformedPacketsReceived: mustCreateMetric("/netstack/udp/malformed_packets_received", "Number of incoming UDP datagrams dropped due to the UDP header being in a malformed state."),
PacketsSent: mustCreateMetric("/netstack/udp/packets_sent", "Number of UDP datagrams sent."),
PacketSendErrors: mustCreateMetric("/netstack/udp/packet_send_errors", "Number of UDP datagrams failed to be sent."),
ChecksumErrors: mustCreateMetric("/netstack/udp/checksum_errors", "Number of UDP datagrams dropped due to bad checksums."),
},
}
pkg/sentry/socket/netstack/stack.go
+1 -1
View File
@@ -313,7 +313,7 @@ func (s *Stack) Statistics(stat interface{}, arg string) error {
udp.PacketsSent.Value(), // OutDatagrams.
udp.ReceiveBufferErrors.Value(), // RcvbufErrors.
0, // Udp/SndbufErrors.
0, // Udp/InCsumErrors.
udp.ChecksumErrors.Value(), // Udp/InCsumErrors.
0, // Udp/IgnoredMulti.
}
default: