diff options
| author | Ting-Yu Wang <anivia@google.com> | 2021-05-13 13:54:04 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-05-13 13:56:16 -0700 |
| commit | 84f04cc858644e9748a82f33b834a84c8b0fc934 (patch) | |
| tree | 011d6915a666ea978a7b5efb7397757cef3370e0 /pkg/tcpip/header/parse | |
| parent | baa0888f114c586ea490d49a23c3d828fd739b85 (diff) | |
Migrate PacketBuffer to use pkg/buffer
Benchmark iperf3:
Before After
native->runsc 5.14 5.01 (Gbps)
runsc->native 4.15 4.07 (Gbps)
It did introduce overhead, mainly at the bridge between pkg/buffer and
VectorisedView, the ExtractVV method. Once endpoints start migrating away from
VV, this overhead will be gone.
Updates #2404
PiperOrigin-RevId: 373651666
Diffstat (limited to 'pkg/tcpip/header/parse')
| -rw-r--r-- | pkg/tcpip/header/parse/parse.go | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/pkg/tcpip/header/parse/parse.go b/pkg/tcpip/header/parse/parse.go index ebb4b2c1d..1c913b5e1 100644 --- a/pkg/tcpip/header/parse/parse.go +++ b/pkg/tcpip/header/parse/parse.go @@ -60,9 +60,13 @@ func IPv4(pkt *stack.PacketBuffer) bool { return false } ipHdr = header.IPv4(hdr) + length := int(ipHdr.TotalLength()) - len(hdr) + if length < 0 { + return false + } pkt.NetworkProtocolNumber = header.IPv4ProtocolNumber - pkt.Data().CapLength(int(ipHdr.TotalLength()) - len(hdr)) + pkt.Data().CapLength(length) return true } |