diff options
| author | Kevin Krakauer <krakauer@google.com> | 2019-10-21 13:21:58 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2019-10-21 13:23:18 -0700 |
| commit | 12235d533ae5c8b4b03c6d7f24cae785a2d6ec22 (patch) | |
| tree | 5abb8c6990f18af17a3889de637befc88b302a8e /pkg/tcpip/header/eth.go | |
| parent | 652f7b1d0fef6f522baaed091d4820a48014092c (diff) | |
AF_PACKET support for netstack (aka epsocket).
Like (AF_INET, SOCK_RAW) sockets, AF_PACKET sockets require CAP_NET_RAW. With
runsc, you'll need to pass `--net-raw=true` to enable them.
Binding isn't supported yet.
PiperOrigin-RevId: 275909366
Diffstat (limited to 'pkg/tcpip/header/eth.go')
| -rw-r--r-- | pkg/tcpip/header/eth.go | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/pkg/tcpip/header/eth.go b/pkg/tcpip/header/eth.go index 4c3d3311f..1bb3bb5e6 100644 --- a/pkg/tcpip/header/eth.go +++ b/pkg/tcpip/header/eth.go @@ -50,6 +50,24 @@ const ( EthernetAddressSize = 6 ) +const ( + // EthernetProtocolAll is a catch-all for all protocols carried inside + // an ethernet frame. It is mainly used to create packet sockets that + // capture all traffic. + EthernetProtocolAll tcpip.NetworkProtocolNumber = 0x0003 + + // EthernetProtocolPUP is the PARC Universial Packet protocol ethertype. + EthernetProtocolPUP tcpip.NetworkProtocolNumber = 0x0200 +) + +// Ethertypes holds the protocol numbers describing the payload of an ethernet +// frame. These types aren't necessarily supported by netstack, but can be used +// to catch all traffic of a type via packet endpoints. +var Ethertypes = []tcpip.NetworkProtocolNumber{ + EthernetProtocolAll, + EthernetProtocolPUP, +} + // SourceAddress returns the "MAC source" field of the ethernet frame header. func (b Ethernet) SourceAddress() tcpip.LinkAddress { return tcpip.LinkAddress(b[srcMAC:][:EthernetAddressSize]) |