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| author | Rahat Mahmood <rahat@google.com> | 2019-06-06 15:03:44 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2019-06-06 15:04:47 -0700 |
| commit | 2d2831e3541c8ae3c84f17cfd1bf0a26f2027044 (patch) | |
| tree | 73511b008d7be602ba39947c17bdf71ced981778 /pkg/abi/linux | |
| parent | bf0b1b9d767736e632fa56b90d904fee968d8d3d (diff) | |
Track and export socket state.
This is necessary for implementing network diagnostic interfaces like
/proc/net/{tcp,udp,unix} and sock_diag(7).
For pass-through endpoints such as hostinet, we obtain the socket
state from the backend. For netstack, we add explicit tracking of TCP
states.
PiperOrigin-RevId: 251934850
Diffstat (limited to 'pkg/abi/linux')
| -rw-r--r-- | pkg/abi/linux/socket.go | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/pkg/abi/linux/socket.go b/pkg/abi/linux/socket.go index 417840731..44bd69df6 100644 --- a/pkg/abi/linux/socket.go +++ b/pkg/abi/linux/socket.go @@ -200,6 +200,22 @@ const ( SS_DISCONNECTING = 4 // In process of disconnecting. ) +// TCP protocol states, from include/net/tcp_states.h. +const ( + TCP_ESTABLISHED uint32 = iota + 1 + TCP_SYN_SENT + TCP_SYN_RECV + TCP_FIN_WAIT1 + TCP_FIN_WAIT2 + TCP_TIME_WAIT + TCP_CLOSE + TCP_CLOSE_WAIT + TCP_LAST_ACK + TCP_LISTEN + TCP_CLOSING + TCP_NEW_SYN_RECV +) + // SockAddrMax is the maximum size of a struct sockaddr, from // uapi/linux/socket.h. const SockAddrMax = 128 |