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linux: added support for frames with info #104

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linux: added support for frames with info #104

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6 changes: 6 additions & 0 deletions params_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,12 @@ type PlatformSpecificParams struct {
// uses multiple file descriptors (queues) to parallelize packets sending
// or receiving.
MultiQueue bool

// If PacketInfo is set the frame format is:
// Flags [2 bytes]
// Proto [2 bytes]
// Raw protocol(IP, IPv6, etc) frame.
PacketInfo bool
}

func defaultPlatformSpecificParams() PlatformSpecificParams {
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6 changes: 4 additions & 2 deletions syscalls_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ func ioctl(fd uintptr, request uintptr, argp uintptr) error {
}

func setupFd(config Config, fd uintptr) (name string, err error) {
var flags uint16 = cIFFNOPI
var flags uint16
if config.DeviceType == TUN {
flags |= cIFFTUN
} else {
Expand All @@ -38,7 +38,9 @@ func setupFd(config Config, fd uintptr) (name string, err error) {
if config.PlatformSpecificParams.MultiQueue {
flags |= cIFFMULTIQUEUE
}

if !config.PlatformSpecificParams.PacketInfo {
flags |= cIFFNOPI
}
if name, err = createInterface(fd, config.Name, flags); err != nil {
return "", err
}
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