diff options
Diffstat (limited to 'pkg/tcpip/stack/registration.go')
| -rw-r--r-- | pkg/tcpip/stack/registration.go | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/pkg/tcpip/stack/registration.go b/pkg/tcpip/stack/registration.go index 595c7e793..0acec2984 100644 --- a/pkg/tcpip/stack/registration.go +++ b/pkg/tcpip/stack/registration.go @@ -289,7 +289,11 @@ type LinkAddressCache interface { // registered with the network protocol, the cache attempts to resolve the address // and returns ErrWouldBlock. Waker is notified when address resolution is // complete (success or not). - GetLinkAddress(nicid tcpip.NICID, addr, localAddr tcpip.Address, protocol tcpip.NetworkProtocolNumber, w *sleep.Waker) (tcpip.LinkAddress, *tcpip.Error) + // + // If address resolution is required, ErrNoLinkAddress and a notification channel is + // returned for the top level caller to block. Channel is closed once address resolution + // is complete (success or not). + GetLinkAddress(nicid tcpip.NICID, addr, localAddr tcpip.Address, protocol tcpip.NetworkProtocolNumber, w *sleep.Waker) (tcpip.LinkAddress, <-chan struct{}, *tcpip.Error) // RemoveWaker removes a waker that has been added in GetLinkAddress(). RemoveWaker(nicid tcpip.NICID, addr tcpip.Address, waker *sleep.Waker) |