Files
nebula/overlay/device.go
T
2026-07-17 15:40:07 -05:00

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package overlay
import (
"io"
"net/netip"
"github.com/slackhq/nebula/overlay/tio"
"github.com/slackhq/nebula/routing"
)
// defaultBatchBufSize is the per-Queue scratch size for Read on backends
// that don't do TSO segmentation. 65535 covers any single IP packet.
const defaultBatchBufSize = 65535
type Device interface {
io.Closer
Activate() error
Networks() []netip.Prefix
Name() string
RoutesFor(netip.Addr) routing.Gateways
// Queues returns the device's packet queues, opening additional ones as
// needed until there are n. Platforms without multiqueue support return
// their single queue regardless of n, so callers must size reader loops
// to len(result), not n; implementations never return more than n. An
// error means a queue that should have opened could not; the caller owns
// cleanup via Close. Called once, during interface activation.
Queues(n int) ([]tio.Queue, error)
}