diff options
| author | Amanda Tait <atait@google.com> | 2019-02-20 12:53:07 -0800 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2019-02-20 12:54:13 -0800 |
| commit | ea070b9d5f4be0b25b028e90ab4518ef2e4df16b (patch) | |
| tree | 809aa3394d3b276cb5b37b4d72adf0f32e9248e1 /pkg/dhcp/client.go | |
| parent | 3e3a1ef9d61fccf6d0d9a52f4e885a6e07a07609 (diff) | |
Implement Broadcast support
This change adds support for the SO_BROADCAST socket option in gVisor Netstack.
This support includes getsockopt()/setsockopt() functionality for both UDP and
TCP endpoints (the latter being a NOOP), dispatching broadcast messages up and
down the stack, and route finding/creation for broadcast packets. Finally, a
suite of tests have been implemented, exercising this functionality through the
Linux syscall API.
PiperOrigin-RevId: 234850781
Change-Id: If3e666666917d39f55083741c78314a06defb26c
Diffstat (limited to 'pkg/dhcp/client.go')
| -rw-r--r-- | pkg/dhcp/client.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/dhcp/client.go b/pkg/dhcp/client.go index 3330c4998..6d48eec7e 100644 --- a/pkg/dhcp/client.go +++ b/pkg/dhcp/client.go @@ -141,6 +141,9 @@ func (c *Client) Request(ctx context.Context, requestedAddr tcpip.Address) (cfg }, nil); err != nil { return Config{}, fmt.Errorf("dhcp: connect failed: %v", err) } + if err := ep.SetSockOpt(tcpip.BroadcastOption(1)); err != nil { + return Config{}, fmt.Errorf("dhcp: setsockopt SO_BROADCAST: %v", err) + } epin, err := c.stack.NewEndpoint(udp.ProtocolNumber, ipv4.ProtocolNumber, &wq) if err != nil { |