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package netlink
import "net"
// SocketID identifies a single socket.
type SocketID struct {
SourcePort uint16
DestinationPort uint16
Source net.IP
Destination net.IP
Interface uint32
Cookie [2]uint32
}
// Socket represents a netlink socket.
type Socket struct {
Family uint8
State uint8
Timer uint8
Retrans uint8
ID SocketID
Expires uint32
RQueue uint32
WQueue uint32
UID uint32
INode uint32
}
// UnixSocket represents a netlink unix socket.
type UnixSocket struct {
Type uint8
Family uint8
State uint8
pad uint8
INode uint32
Cookie [2]uint32
}
// XDPSocket represents an XDP socket (and the common diagnosis part in
// particular). Please note that in contrast to [UnixSocket] the XDPSocket type
// does not feature “State” information.
type XDPSocket struct {
// xdp_diag_msg
// https://elixir.bootlin.com/linux/v6.2/source/include/uapi/linux/xdp_diag.h#L21
Family uint8
Type uint8
pad uint16
Ino uint32
Cookie [2]uint32
}
type XDPInfo struct {
// XDP_DIAG_INFO/xdp_diag_info
// https://elixir.bootlin.com/linux/v6.2/source/include/uapi/linux/xdp_diag.h#L51
Ifindex uint32
QueueID uint32
// XDP_DIAG_UID
UID uint32
// XDP_RX_RING
// https://elixir.bootlin.com/linux/v6.2/source/include/uapi/linux/xdp_diag.h#L56
RxRingEntries uint32
TxRingEntries uint32
UmemFillRingEntries uint32
UmemCompletionRingEntries uint32
// XDR_DIAG_UMEM
Umem *XDPDiagUmem
// XDR_DIAG_STATS
Stats *XDPDiagStats
}
const (
XDP_DU_F_ZEROCOPY = 1 << iota
)
// XDPDiagUmem describes the umem attached to an XDP socket.
//
// https://elixir.bootlin.com/linux/v6.2/source/include/uapi/linux/xdp_diag.h#L62
type XDPDiagUmem struct {
Size uint64
ID uint32
NumPages uint32
ChunkSize uint32
Headroom uint32
Ifindex uint32
QueueID uint32
Flags uint32
Refs uint32
}
// XDPDiagStats contains ring statistics for an XDP socket.
//
// https://elixir.bootlin.com/linux/v6.2/source/include/uapi/linux/xdp_diag.h#L74
type XDPDiagStats struct {
RxDropped uint64
RxInvalid uint64
RxFull uint64
FillRingEmpty uint64
TxInvalid uint64
TxRingEmpty uint64
}
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