diff --git a/devlink_linux.go b/devlink_linux.go index 29b3f8e..4424550 100644 --- a/devlink_linux.go +++ b/devlink_linux.go @@ -27,6 +27,18 @@ type DevlinkDevice struct { Attrs DevlinkDevAttrs } +// DevlinkPort represents port and its attributes +type DevlinkPort struct { + BusName string + DeviceName string + PortIndex uint32 + PortType uint16 + NetdeviceName string + NetdevIfIndex uint32 + RdmaDeviceName string + PortFlavour uint16 +} + func parseDevLinkDeviceList(msgs [][]byte) ([]*DevlinkDevice, error) { devices := make([]*DevlinkDevice, 0, len(msgs)) for _, m := range msgs { @@ -270,3 +282,74 @@ func (h *Handle) DevLinkSetEswitchMode(Dev *DevlinkDevice, NewMode string) error func DevLinkSetEswitchMode(Dev *DevlinkDevice, NewMode string) error { return pkgHandle.DevLinkSetEswitchMode(Dev, NewMode) } + +func (port *DevlinkPort) parseAttributes(attrs []syscall.NetlinkRouteAttr) error { + for _, a := range attrs { + switch a.Attr.Type { + case nl.DEVLINK_ATTR_BUS_NAME: + port.BusName = string(a.Value) + case nl.DEVLINK_ATTR_DEV_NAME: + port.DeviceName = string(a.Value) + case nl.DEVLINK_ATTR_PORT_INDEX: + port.PortIndex = native.Uint32(a.Value) + case nl.DEVLINK_ATTR_PORT_TYPE: + port.PortType = native.Uint16(a.Value) + case nl.DEVLINK_ATTR_PORT_NETDEV_NAME: + port.NetdeviceName = string(a.Value) + case nl.DEVLINK_ATTR_PORT_NETDEV_IFINDEX: + port.NetdevIfIndex = native.Uint32(a.Value) + case nl.DEVLINK_ATTR_PORT_IBDEV_NAME: + port.RdmaDeviceName = string(a.Value) + case nl.DEVLINK_ATTR_PORT_FLAVOUR: + port.PortFlavour = native.Uint16(a.Value) + } + } + return nil +} + +func parseDevLinkAllPortList(msgs [][]byte) ([]*DevlinkPort, error) { + ports := make([]*DevlinkPort, 0, len(msgs)) + for _, m := range msgs { + attrs, err := nl.ParseRouteAttr(m[nl.SizeofGenlmsg:]) + if err != nil { + return nil, err + } + port := &DevlinkPort{} + if err = port.parseAttributes(attrs); err != nil { + return nil, err + } + ports = append(ports, port) + } + return ports, nil +} + +// DevLinkGetPortList provides a pointer to devlink ports and nil error, +// otherwise returns an error code. +func (h *Handle) DevLinkGetAllPortList() ([]*DevlinkPort, error) { + f, err := h.GenlFamilyGet(nl.GENL_DEVLINK_NAME) + if err != nil { + return nil, err + } + msg := &nl.Genlmsg{ + Command: nl.DEVLINK_CMD_PORT_GET, + Version: nl.GENL_DEVLINK_VERSION, + } + req := h.newNetlinkRequest(int(f.ID), + unix.NLM_F_REQUEST|unix.NLM_F_ACK|unix.NLM_F_DUMP) + req.AddData(msg) + msgs, err := req.Execute(unix.NETLINK_GENERIC, 0) + if err != nil { + return nil, err + } + ports, err := parseDevLinkAllPortList(msgs) + if err != nil { + return nil, err + } + return ports, nil +} + +// DevLinkGetPortList provides a pointer to devlink ports and nil error, +// otherwise returns an error code. +func DevLinkGetAllPortList() ([]*DevlinkPort, error) { + return pkgHandle.DevLinkGetAllPortList() +} diff --git a/devlink_test.go b/devlink_test.go index ea69628..8c1da5e 100644 --- a/devlink_test.go +++ b/devlink_test.go @@ -40,3 +40,15 @@ func TestDevLinkSetEswitchMode(t *testing.T) { t.Fatal(err) } } + +func TestDevLinkGetAllPortList(t *testing.T) { + minKernelRequired(t, 5, 4) + ports, err := DevLinkGetAllPortList() + if err != nil { + t.Fatal(err) + } + t.Log("devlink port count = ", len(ports)) + for _, port := range ports { + t.Log(*port) + } +} diff --git a/nl/devlink_linux.go b/nl/devlink_linux.go index db66faa..aa6155e 100644 --- a/nl/devlink_linux.go +++ b/nl/devlink_linux.go @@ -10,6 +10,7 @@ const ( const ( DEVLINK_CMD_GET = 1 + DEVLINK_CMD_PORT_GET = 5 DEVLINK_CMD_ESWITCH_GET = 29 DEVLINK_CMD_ESWITCH_SET = 30 ) @@ -17,9 +18,15 @@ const ( const ( DEVLINK_ATTR_BUS_NAME = 1 DEVLINK_ATTR_DEV_NAME = 2 + DEVLINK_ATTR_PORT_INDEX = 3 + DEVLINK_ATTR_PORT_TYPE = 4 + DEVLINK_ATTR_PORT_NETDEV_IFINDEX = 6 + DEVLINK_ATTR_PORT_NETDEV_NAME = 7 + DEVLINK_ATTR_PORT_IBDEV_NAME = 8 DEVLINK_ATTR_ESWITCH_MODE = 25 DEVLINK_ATTR_ESWITCH_INLINE_MODE = 26 DEVLINK_ATTR_ESWITCH_ENCAP_MODE = 62 + DEVLINK_ATTR_PORT_FLAVOUR = 77 ) const ( @@ -38,3 +45,19 @@ const ( DEVLINK_ESWITCH_ENCAP_MODE_NONE = 0 DEVLINK_ESWITCH_ENCAP_MODE_BASIC = 1 ) + +const ( + DEVLINK_PORT_FLAVOUR_PHYSICAL = 0 + DEVLINK_PORT_FLAVOUR_CPU = 1 + DEVLINK_PORT_FLAVOUR_DSA = 2 + DEVLINK_PORT_FLAVOUR_PCI_PF = 3 + DEVLINK_PORT_FLAVOUR_PCI_VF = 4 + DEVLINK_PORT_FLAVOUR_VIRTUAL = 5 +) + +const ( + DEVLINK_PORT_TYPE_NOTSET = 0 + DEVLINK_PORT_TYPE_AUTO = 1 + DEVLINK_PORT_TYPE_ETH = 2 + DEVLINK_PORT_TYPE_IB = 3 +)