diff options
Diffstat (limited to 'vendor/github.com/vishvananda/netlink/link_linux.go')
| -rw-r--r-- | vendor/github.com/vishvananda/netlink/link_linux.go | 965 |
1 files changed, 750 insertions, 215 deletions
diff --git a/vendor/github.com/vishvananda/netlink/link_linux.go b/vendor/github.com/vishvananda/netlink/link_linux.go index 18a4d1a5f..540191ed8 100644 --- a/vendor/github.com/vishvananda/netlink/link_linux.go +++ b/vendor/github.com/vishvananda/netlink/link_linux.go @@ -11,22 +11,24 @@ import ( "github.com/vishvananda/netlink/nl" "github.com/vishvananda/netns" + "golang.org/x/sys/unix" ) const ( SizeofLinkStats32 = 0x5c SizeofLinkStats64 = 0xd8 - IFLA_STATS64 = 0x17 // syscall pkg does not contain this one ) const ( - TUNTAP_MODE_TUN TuntapMode = syscall.IFF_TUN - TUNTAP_MODE_TAP TuntapMode = syscall.IFF_TAP - TUNTAP_DEFAULTS TuntapFlag = syscall.IFF_TUN_EXCL | syscall.IFF_ONE_QUEUE - TUNTAP_VNET_HDR TuntapFlag = syscall.IFF_VNET_HDR - TUNTAP_TUN_EXCL TuntapFlag = syscall.IFF_TUN_EXCL - TUNTAP_NO_PI TuntapFlag = syscall.IFF_NO_PI - TUNTAP_ONE_QUEUE TuntapFlag = syscall.IFF_ONE_QUEUE + TUNTAP_MODE_TUN TuntapMode = unix.IFF_TUN + TUNTAP_MODE_TAP TuntapMode = unix.IFF_TAP + TUNTAP_DEFAULTS TuntapFlag = unix.IFF_TUN_EXCL | unix.IFF_ONE_QUEUE + TUNTAP_VNET_HDR TuntapFlag = unix.IFF_VNET_HDR + TUNTAP_TUN_EXCL TuntapFlag = unix.IFF_TUN_EXCL + TUNTAP_NO_PI TuntapFlag = unix.IFF_NO_PI + TUNTAP_ONE_QUEUE TuntapFlag = unix.IFF_ONE_QUEUE + TUNTAP_MULTI_QUEUE TuntapFlag = unix.IFF_MULTI_QUEUE + TUNTAP_MULTI_QUEUE_DEFAULTS TuntapFlag = TUNTAP_MULTI_QUEUE | TUNTAP_NO_PI ) var lookupByDump = false @@ -61,15 +63,15 @@ func (h *Handle) ensureIndex(link *LinkAttrs) { func (h *Handle) LinkSetARPOff(link Link) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) - msg.Change |= syscall.IFF_NOARP - msg.Flags |= syscall.IFF_NOARP + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + msg.Change |= unix.IFF_NOARP + msg.Flags |= unix.IFF_NOARP msg.Index = int32(base.Index) req.AddData(msg) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -80,15 +82,15 @@ func LinkSetARPOff(link Link) error { func (h *Handle) LinkSetARPOn(link Link) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) - msg.Change |= syscall.IFF_NOARP - msg.Flags &= ^uint32(syscall.IFF_NOARP) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + msg.Change |= unix.IFF_NOARP + msg.Flags &= ^uint32(unix.IFF_NOARP) msg.Index = int32(base.Index) req.AddData(msg) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -99,15 +101,84 @@ func LinkSetARPOn(link Link) error { func (h *Handle) SetPromiscOn(link Link) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) - msg.Change = syscall.IFF_PROMISC - msg.Flags = syscall.IFF_PROMISC + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + msg.Change = unix.IFF_PROMISC + msg.Flags = unix.IFF_PROMISC msg.Index = int32(base.Index) req.AddData(msg) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) + return err +} + +func MacvlanMACAddrAdd(link Link, addr net.HardwareAddr) error { + return pkgHandle.MacvlanMACAddrAdd(link, addr) +} + +func (h *Handle) MacvlanMACAddrAdd(link Link, addr net.HardwareAddr) error { + return h.macvlanMACAddrChange(link, []net.HardwareAddr{addr}, nl.MACVLAN_MACADDR_ADD) +} + +func MacvlanMACAddrDel(link Link, addr net.HardwareAddr) error { + return pkgHandle.MacvlanMACAddrDel(link, addr) +} + +func (h *Handle) MacvlanMACAddrDel(link Link, addr net.HardwareAddr) error { + return h.macvlanMACAddrChange(link, []net.HardwareAddr{addr}, nl.MACVLAN_MACADDR_DEL) +} + +func MacvlanMACAddrFlush(link Link) error { + return pkgHandle.MacvlanMACAddrFlush(link) +} + +func (h *Handle) MacvlanMACAddrFlush(link Link) error { + return h.macvlanMACAddrChange(link, nil, nl.MACVLAN_MACADDR_FLUSH) +} + +func MacvlanMACAddrSet(link Link, addrs []net.HardwareAddr) error { + return pkgHandle.MacvlanMACAddrSet(link, addrs) +} + +func (h *Handle) MacvlanMACAddrSet(link Link, addrs []net.HardwareAddr) error { + return h.macvlanMACAddrChange(link, addrs, nl.MACVLAN_MACADDR_SET) +} + +func (h *Handle) macvlanMACAddrChange(link Link, addrs []net.HardwareAddr, mode uint32) error { + base := link.Attrs() + h.ensureIndex(base) + req := h.newNetlinkRequest(unix.RTM_NEWLINK, unix.NLM_F_ACK) + + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + msg.Index = int32(base.Index) + req.AddData(msg) + + linkInfo := nl.NewRtAttr(unix.IFLA_LINKINFO, nil) + nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_KIND, nl.NonZeroTerminated(link.Type())) + inner := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil) + + // IFLA_MACVLAN_MACADDR_MODE = mode + b := make([]byte, 4) + native.PutUint32(b, mode) + nl.NewRtAttrChild(inner, nl.IFLA_MACVLAN_MACADDR_MODE, b) + + // populate message with MAC addrs, if necessary + switch mode { + case nl.MACVLAN_MACADDR_ADD, nl.MACVLAN_MACADDR_DEL: + if len(addrs) == 1 { + nl.NewRtAttrChild(inner, nl.IFLA_MACVLAN_MACADDR, []byte(addrs[0])) + } + case nl.MACVLAN_MACADDR_SET: + mad := nl.NewRtAttrChild(inner, nl.IFLA_MACVLAN_MACADDR_DATA, nil) + for _, addr := range addrs { + nl.NewRtAttrChild(mad, nl.IFLA_MACVLAN_MACADDR, []byte(addr)) + } + } + + req.AddData(linkInfo) + + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -118,7 +189,7 @@ func BridgeSetMcastSnoop(link Link, on bool) error { func (h *Handle) BridgeSetMcastSnoop(link Link, on bool) error { bridge := link.(*Bridge) bridge.MulticastSnooping = &on - return h.linkModify(bridge, syscall.NLM_F_ACK) + return h.linkModify(bridge, unix.NLM_F_ACK) } func SetPromiscOn(link Link) error { @@ -128,15 +199,15 @@ func SetPromiscOn(link Link) error { func (h *Handle) SetPromiscOff(link Link) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) - msg.Change = syscall.IFF_PROMISC - msg.Flags = 0 & ^syscall.IFF_PROMISC + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + msg.Change = unix.IFF_PROMISC + msg.Flags = 0 & ^unix.IFF_PROMISC msg.Index = int32(base.Index) req.AddData(msg) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -155,15 +226,15 @@ func LinkSetUp(link Link) error { func (h *Handle) LinkSetUp(link Link) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_NEWLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_NEWLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) - msg.Change = syscall.IFF_UP - msg.Flags = syscall.IFF_UP + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + msg.Change = unix.IFF_UP + msg.Flags = unix.IFF_UP msg.Index = int32(base.Index) req.AddData(msg) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -178,15 +249,15 @@ func LinkSetDown(link Link) error { func (h *Handle) LinkSetDown(link Link) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_NEWLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_NEWLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) - msg.Change = syscall.IFF_UP - msg.Flags = 0 & ^syscall.IFF_UP + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + msg.Change = unix.IFF_UP + msg.Flags = 0 & ^unix.IFF_UP msg.Index = int32(base.Index) req.AddData(msg) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -201,19 +272,19 @@ func LinkSetMTU(link Link, mtu int) error { func (h *Handle) LinkSetMTU(link Link, mtu int) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) b := make([]byte, 4) native.PutUint32(b, uint32(mtu)) - data := nl.NewRtAttr(syscall.IFLA_MTU, b) + data := nl.NewRtAttr(unix.IFLA_MTU, b) req.AddData(data) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -228,16 +299,16 @@ func LinkSetName(link Link, name string) error { func (h *Handle) LinkSetName(link Link, name string) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) - data := nl.NewRtAttr(syscall.IFLA_IFNAME, []byte(name)) + data := nl.NewRtAttr(unix.IFLA_IFNAME, []byte(name)) req.AddData(data) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -252,16 +323,16 @@ func LinkSetAlias(link Link, name string) error { func (h *Handle) LinkSetAlias(link Link, name string) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) - data := nl.NewRtAttr(syscall.IFLA_IFALIAS, []byte(name)) + data := nl.NewRtAttr(unix.IFLA_IFALIAS, []byte(name)) req.AddData(data) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -276,16 +347,16 @@ func LinkSetHardwareAddr(link Link, hwaddr net.HardwareAddr) error { func (h *Handle) LinkSetHardwareAddr(link Link, hwaddr net.HardwareAddr) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) - data := nl.NewRtAttr(syscall.IFLA_ADDRESS, []byte(hwaddr)) + data := nl.NewRtAttr(unix.IFLA_ADDRESS, []byte(hwaddr)) req.AddData(data) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -300,13 +371,13 @@ func LinkSetVfHardwareAddr(link Link, vf int, hwaddr net.HardwareAddr) error { func (h *Handle) LinkSetVfHardwareAddr(link Link, vf int, hwaddr net.HardwareAddr) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) - data := nl.NewRtAttr(nl.IFLA_VFINFO_LIST, nil) + data := nl.NewRtAttr(unix.IFLA_VFINFO_LIST, nil) info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil) vfmsg := nl.VfMac{ Vf: uint32(vf), @@ -315,7 +386,7 @@ func (h *Handle) LinkSetVfHardwareAddr(link Link, vf int, hwaddr net.HardwareAdd nl.NewRtAttrChild(info, nl.IFLA_VF_MAC, vfmsg.Serialize()) req.AddData(data) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -330,13 +401,13 @@ func LinkSetVfVlan(link Link, vf, vlan int) error { func (h *Handle) LinkSetVfVlan(link Link, vf, vlan int) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) - data := nl.NewRtAttr(nl.IFLA_VFINFO_LIST, nil) + data := nl.NewRtAttr(unix.IFLA_VFINFO_LIST, nil) info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil) vfmsg := nl.VfVlan{ Vf: uint32(vf), @@ -345,7 +416,7 @@ func (h *Handle) LinkSetVfVlan(link Link, vf, vlan int) error { nl.NewRtAttrChild(info, nl.IFLA_VF_VLAN, vfmsg.Serialize()) req.AddData(data) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -360,13 +431,13 @@ func LinkSetVfTxRate(link Link, vf, rate int) error { func (h *Handle) LinkSetVfTxRate(link Link, vf, rate int) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) - data := nl.NewRtAttr(nl.IFLA_VFINFO_LIST, nil) + data := nl.NewRtAttr(unix.IFLA_VFINFO_LIST, nil) info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil) vfmsg := nl.VfTxRate{ Vf: uint32(vf), @@ -375,7 +446,75 @@ func (h *Handle) LinkSetVfTxRate(link Link, vf, rate int) error { nl.NewRtAttrChild(info, nl.IFLA_VF_TX_RATE, vfmsg.Serialize()) req.AddData(data) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) + return err +} + +// LinkSetVfSpoofchk enables/disables spoof check on a vf for the link. +// Equivalent to: `ip link set $link vf $vf spoofchk $check` +func LinkSetVfSpoofchk(link Link, vf int, check bool) error { + return pkgHandle.LinkSetVfSpoofchk(link, vf, check) +} + +// LinkSetVfSpookfchk enables/disables spoof check on a vf for the link. +// Equivalent to: `ip link set $link vf $vf spoofchk $check` +func (h *Handle) LinkSetVfSpoofchk(link Link, vf int, check bool) error { + var setting uint32 + base := link.Attrs() + h.ensureIndex(base) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) + + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + msg.Index = int32(base.Index) + req.AddData(msg) + + data := nl.NewRtAttr(unix.IFLA_VFINFO_LIST, nil) + info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil) + if check { + setting = 1 + } + vfmsg := nl.VfSpoofchk{ + Vf: uint32(vf), + Setting: setting, + } + nl.NewRtAttrChild(info, nl.IFLA_VF_SPOOFCHK, vfmsg.Serialize()) + req.AddData(data) + + _, err := req.Execute(unix.NETLINK_ROUTE, 0) + return err +} + +// LinkSetVfTrust enables/disables trust state on a vf for the link. +// Equivalent to: `ip link set $link vf $vf trust $state` +func LinkSetVfTrust(link Link, vf int, state bool) error { + return pkgHandle.LinkSetVfTrust(link, vf, state) +} + +// LinkSetVfTrust enables/disables trust state on a vf for the link. +// Equivalent to: `ip link set $link vf $vf trust $state` +func (h *Handle) LinkSetVfTrust(link Link, vf int, state bool) error { + var setting uint32 + base := link.Attrs() + h.ensureIndex(base) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) + + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + msg.Index = int32(base.Index) + req.AddData(msg) + + data := nl.NewRtAttr(unix.IFLA_VFINFO_LIST, nil) + info := nl.NewRtAttrChild(data, nl.IFLA_VF_INFO, nil) + if state { + setting = 1 + } + vfmsg := nl.VfTrust{ + Vf: uint32(vf), + Setting: setting, + } + nl.NewRtAttrChild(info, nl.IFLA_VF_TRUST, vfmsg.Serialize()) + req.AddData(data) + + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -423,19 +562,19 @@ func LinkSetMasterByIndex(link Link, masterIndex int) error { func (h *Handle) LinkSetMasterByIndex(link Link, masterIndex int) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) b := make([]byte, 4) native.PutUint32(b, uint32(masterIndex)) - data := nl.NewRtAttr(syscall.IFLA_MASTER, b) + data := nl.NewRtAttr(unix.IFLA_MASTER, b) req.AddData(data) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -452,19 +591,19 @@ func LinkSetNsPid(link Link, nspid int) error { func (h *Handle) LinkSetNsPid(link Link, nspid int) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) b := make([]byte, 4) native.PutUint32(b, uint32(nspid)) - data := nl.NewRtAttr(syscall.IFLA_NET_NS_PID, b) + data := nl.NewRtAttr(unix.IFLA_NET_NS_PID, b) req.AddData(data) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -481,36 +620,42 @@ func LinkSetNsFd(link Link, fd int) error { func (h *Handle) LinkSetNsFd(link Link, fd int) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) b := make([]byte, 4) native.PutUint32(b, uint32(fd)) - data := nl.NewRtAttr(nl.IFLA_NET_NS_FD, b) + data := nl.NewRtAttr(unix.IFLA_NET_NS_FD, b) req.AddData(data) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } // LinkSetXdpFd adds a bpf function to the driver. The fd must be a bpf // program loaded with bpf(type=BPF_PROG_TYPE_XDP) func LinkSetXdpFd(link Link, fd int) error { + return LinkSetXdpFdWithFlags(link, fd, 0) +} + +// LinkSetXdpFdWithFlags adds a bpf function to the driver with the given +// options. The fd must be a bpf program loaded with bpf(type=BPF_PROG_TYPE_XDP) +func LinkSetXdpFdWithFlags(link Link, fd, flags int) error { base := link.Attrs() ensureIndex(base) - req := nl.NewNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := nl.NewNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) - addXdpAttrs(&LinkXdp{Fd: fd}, req) + addXdpAttrs(&LinkXdp{Fd: fd, Flags: uint32(flags)}, req) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -568,6 +713,8 @@ func addVxlanAttrs(vxlan *Vxlan, linkInfo *nl.RtAttr) { nl.NewRtAttrChild(data, nl.IFLA_VXLAN_RSC, boolAttr(vxlan.RSC)) nl.NewRtAttrChild(data, nl.IFLA_VXLAN_L2MISS, boolAttr(vxlan.L2miss)) nl.NewRtAttrChild(data, nl.IFLA_VXLAN_L3MISS, boolAttr(vxlan.L3miss)) + nl.NewRtAttrChild(data, nl.IFLA_VXLAN_UDP_ZERO_CSUM6_TX, boolAttr(vxlan.UDP6ZeroCSumTx)) + nl.NewRtAttrChild(data, nl.IFLA_VXLAN_UDP_ZERO_CSUM6_RX, boolAttr(vxlan.UDP6ZeroCSumRx)) if vxlan.UDPCSum { nl.NewRtAttrChild(data, nl.IFLA_VXLAN_UDP_CSUM, boolAttr(vxlan.UDPCSum)) @@ -692,6 +839,12 @@ func addBondAttrs(bond *Bond, linkInfo *nl.RtAttr) { } } +func cleanupFds(fds []*os.File) { + for _, f := range fds { + f.Close() + } +} + // LinkAdd adds a new link device. The type and features of the device // are taken from the parameters in the link object. // Equivalent to: `ip link add $link` @@ -703,7 +856,7 @@ func LinkAdd(link Link) error { // are taken fromt the parameters in the link object. // Equivalent to: `ip link add $link` func (h *Handle) LinkAdd(link Link) error { - return h.linkModify(link, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL|syscall.NLM_F_ACK) + return h.linkModify(link, unix.NLM_F_CREATE|unix.NLM_F_EXCL|unix.NLM_F_ACK) } func (h *Handle) linkModify(link Link, flags int) error { @@ -717,104 +870,155 @@ func (h *Handle) linkModify(link Link, flags int) error { if tuntap, ok := link.(*Tuntap); ok { // TODO: support user // TODO: support group - // TODO: multi_queue // TODO: support non- persistent - if tuntap.Mode < syscall.IFF_TUN || tuntap.Mode > syscall.IFF_TAP { + if tuntap.Mode < unix.IFF_TUN || tuntap.Mode > unix.IFF_TAP { return fmt.Errorf("Tuntap.Mode %v unknown!", tuntap.Mode) } - file, err := os.OpenFile("/dev/net/tun", os.O_RDWR, 0) - if err != nil { - return err - } - defer file.Close() + + queues := tuntap.Queues + + var fds []*os.File var req ifReq - if tuntap.Flags == 0 { - req.Flags = uint16(TUNTAP_DEFAULTS) + copy(req.Name[:15], base.Name) + + req.Flags = uint16(tuntap.Flags) + + if queues == 0 { //Legacy compatibility + queues = 1 + if tuntap.Flags == 0 { + req.Flags = uint16(TUNTAP_DEFAULTS) + } } else { - req.Flags = uint16(tuntap.Flags) + // For best peformance set Flags to TUNTAP_MULTI_QUEUE_DEFAULTS | TUNTAP_VNET_HDR + // when a) KVM has support for this ABI and + // b) the value of the flag is queryable using the TUNGETIFF ioctl + if tuntap.Flags == 0 { + req.Flags = uint16(TUNTAP_MULTI_QUEUE_DEFAULTS) + } } + req.Flags |= uint16(tuntap.Mode) - copy(req.Name[:15], base.Name) - _, _, errno := syscall.Syscall(syscall.SYS_IOCTL, file.Fd(), uintptr(syscall.TUNSETIFF), uintptr(unsafe.Pointer(&req))) - if errno != 0 { - return fmt.Errorf("Tuntap IOCTL TUNSETIFF failed, errno %v", errno) + + for i := 0; i < queues; i++ { + localReq := req + file, err := os.OpenFile("/dev/net/tun", os.O_RDWR, 0) + if err != nil { + cleanupFds(fds) + return err + } + + fds = append(fds, file) + _, _, errno := unix.Syscall(unix.SYS_IOCTL, file.Fd(), uintptr(unix.TUNSETIFF), uintptr(unsafe.Pointer(&localReq))) + if errno != 0 { + cleanupFds(fds) + return fmt.Errorf("Tuntap IOCTL TUNSETIFF failed [%d], errno %v", i, errno) + } } - _, _, errno = syscall.Syscall(syscall.SYS_IOCTL, file.Fd(), uintptr(syscall.TUNSETPERSIST), 1) + + _, _, errno := unix.Syscall(unix.SYS_IOCTL, fds[0].Fd(), uintptr(unix.TUNSETPERSIST), 1) if errno != 0 { + cleanupFds(fds) return fmt.Errorf("Tuntap IOCTL TUNSETPERSIST failed, errno %v", errno) } + h.ensureIndex(base) // can't set master during create, so set it afterwards if base.MasterIndex != 0 { // TODO: verify MasterIndex is actually a bridge? - return h.LinkSetMasterByIndex(link, base.MasterIndex) + err := h.LinkSetMasterByIndex(link, base.MasterIndex) + if err != nil { + _, _, _ = unix.Syscall(unix.SYS_IOCTL, fds[0].Fd(), uintptr(unix.TUNSETPERSIST), 0) + cleanupFds(fds) + return err + } + } + + if tuntap.Queues == 0 { + cleanupFds(fds) + } else { + tuntap.Fds = fds } + return nil } - req := h.newNetlinkRequest(syscall.RTM_NEWLINK, flags) + req := h.newNetlinkRequest(unix.RTM_NEWLINK, flags) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) // TODO: make it shorter if base.Flags&net.FlagUp != 0 { - msg.Change = syscall.IFF_UP - msg.Flags = syscall.IFF_UP + msg.Change = unix.IFF_UP + msg.Flags = unix.IFF_UP } if base.Flags&net.FlagBroadcast != 0 { - msg.Change |= syscall.IFF_BROADCAST - msg.Flags |= syscall.IFF_BROADCAST + msg.Change |= unix.IFF_BROADCAST + msg.Flags |= unix.IFF_BROADCAST } if base.Flags&net.FlagLoopback != 0 { - msg.Change |= syscall.IFF_LOOPBACK - msg.Flags |= syscall.IFF_LOOPBACK + msg.Change |= unix.IFF_LOOPBACK + msg.Flags |= unix.IFF_LOOPBACK } if base.Flags&net.FlagPointToPoint != 0 { - msg.Change |= syscall.IFF_POINTOPOINT - msg.Flags |= syscall.IFF_POINTOPOINT + msg.Change |= unix.IFF_POINTOPOINT + msg.Flags |= unix.IFF_POINTOPOINT } if base.Flags&net.FlagMulticast != 0 { - msg.Change |= syscall.IFF_MULTICAST - msg.Flags |= syscall.IFF_MULTICAST + msg.Change |= unix.IFF_MULTICAST + msg.Flags |= unix.IFF_MULTICAST + } + if base.Index != 0 { + msg.Index = int32(base.Index) } + req.AddData(msg) if base.ParentIndex != 0 { b := make([]byte, 4) native.PutUint32(b, uint32(base.ParentIndex)) - data := nl.NewRtAttr(syscall.IFLA_LINK, b) + data := nl.NewRtAttr(unix.IFLA_LINK, b) req.AddData(data) } else if link.Type() == "ipvlan" { return fmt.Errorf("Can't create ipvlan link without ParentIndex") } - nameData := nl.NewRtAttr(syscall.IFLA_IFNAME, nl.ZeroTerminated(base.Name)) + nameData := nl.NewRtAttr(unix.IFLA_IFNAME, nl.ZeroTerminated(base.Name)) req.AddData(nameData) if base.MTU > 0 { - mtu := nl.NewRtAttr(syscall.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU))) + mtu := nl.NewRtAttr(unix.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU))) req.AddData(mtu) } if base.TxQLen >= 0 { - qlen := nl.NewRtAttr(syscall.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen))) + qlen := nl.NewRtAttr(unix.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen))) req.AddData(qlen) } if base.HardwareAddr != nil { - hwaddr := nl.NewRtAttr(syscall.IFLA_ADDRESS, []byte(base.HardwareAddr)) + hwaddr := nl.NewRtAttr(unix.IFLA_ADDRESS, []byte(base.HardwareAddr)) req.AddData(hwaddr) } + if base.NumTxQueues > 0 { + txqueues := nl.NewRtAttr(unix.IFLA_NUM_TX_QUEUES, nl.Uint32Attr(uint32(base.NumTxQueues))) + req.AddData(txqueues) + } + + if base.NumRxQueues > 0 { + rxqueues := nl.NewRtAttr(unix.IFLA_NUM_RX_QUEUES, nl.Uint32Attr(uint32(base.NumRxQueues))) + req.AddData(rxqueues) + } + if base.Namespace != nil { var attr *nl.RtAttr switch base.Namespace.(type) { case NsPid: val := nl.Uint32Attr(uint32(base.Namespace.(NsPid))) - attr = nl.NewRtAttr(syscall.IFLA_NET_NS_PID, val) + attr = nl.NewRtAttr(unix.IFLA_NET_NS_PID, val) case NsFd: val := nl.Uint32Attr(uint32(base.Namespace.(NsFd))) - attr = nl.NewRtAttr(nl.IFLA_NET_NS_FD, val) + attr = nl.NewRtAttr(unix.IFLA_NET_NS_FD, val) } req.AddData(attr) @@ -824,60 +1028,65 @@ func (h *Handle) linkModify(link Link, flags int) error { addXdpAttrs(base.Xdp, req) } - linkInfo := nl.NewRtAttr(syscall.IFLA_LINKINFO, nil) + linkInfo := nl.NewRtAttr(unix.IFLA_LINKINFO, nil) nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_KIND, nl.NonZeroTerminated(link.Type())) - if vlan, ok := link.(*Vlan); ok { + switch link := link.(type) { + case *Vlan: b := make([]byte, 2) - native.PutUint16(b, uint16(vlan.VlanId)) + native.PutUint16(b, uint16(link.VlanId)) data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil) nl.NewRtAttrChild(data, nl.IFLA_VLAN_ID, b) - } else if veth, ok := link.(*Veth); ok { + case *Veth: data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil) peer := nl.NewRtAttrChild(data, nl.VETH_INFO_PEER, nil) - nl.NewIfInfomsgChild(peer, syscall.AF_UNSPEC) - nl.NewRtAttrChild(peer, syscall.IFLA_IFNAME, nl.ZeroTerminated(veth.PeerName)) + nl.NewIfInfomsgChild(peer, unix.AF_UNSPEC) + nl.NewRtAttrChild(peer, unix.IFLA_IFNAME, nl.ZeroTerminated(link.PeerName)) if base.TxQLen >= 0 { - nl.NewRtAttrChild(peer, syscall.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen))) + nl.NewRtAttrChild(peer, unix.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen))) } if base.MTU > 0 { - nl.NewRtAttrChild(peer, syscall.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU))) + nl.NewRtAttrChild(peer, unix.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU))) } - } else if vxlan, ok := link.(*Vxlan); ok { - addVxlanAttrs(vxlan, linkInfo) - } else if bond, ok := link.(*Bond); ok { - addBondAttrs(bond, linkInfo) - } else if ipv, ok := link.(*IPVlan); ok { + case *Vxlan: + addVxlanAttrs(link, linkInfo) + case *Bond: + addBondAttrs(link, linkInfo) + case *IPVlan: data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil) - nl.NewRtAttrChild(data, nl.IFLA_IPVLAN_MODE, nl.Uint16Attr(uint16(ipv.Mode))) - } else if macv, ok := link.(*Macvlan); ok { - if macv.Mode != MACVLAN_MODE_DEFAULT { + nl.NewRtAttrChild(data, nl.IFLA_IPVLAN_MODE, nl.Uint16Attr(uint16(link.Mode))) + case *Macvlan: + if link.Mode != MACVLAN_MODE_DEFAULT { data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil) - nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[macv.Mode])) + nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[link.Mode])) } - } else if macv, ok := link.(*Macvtap); ok { - if macv.Mode != MACVLAN_MODE_DEFAULT { + case *Macvtap: + if link.Mode != MACVLAN_MODE_DEFAULT { data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil) - nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[macv.Mode])) + nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[link.Mode])) } - } else if gretap, ok := link.(*Gretap); ok { - addGretapAttrs(gretap, linkInfo) - } else if iptun, ok := link.(*Iptun); ok { - addIptunAttrs(iptun, linkInfo) - } else if vti, ok := link.(*Vti); ok { - addVtiAttrs(vti, linkInfo) - } else if vrf, ok := link.(*Vrf); ok { - addVrfAttrs(vrf, linkInfo) - } else if bridge, ok := link.(*Bridge); ok { - addBridgeAttrs(bridge, linkInfo) - } else if gtp, ok := link.(*GTP); ok { - addGTPAttrs(gtp, linkInfo) + case *Gretap: + addGretapAttrs(link, linkInfo) + case *Iptun: + addIptunAttrs(link, linkInfo) + case *Sittun: + addSittunAttrs(link, linkInfo) + case *Gretun: + addGretunAttrs(link, linkInfo) + case *Vti: + addVtiAttrs(link, linkInfo) + case *Vrf: + addVrfAttrs(link, linkInfo) + case *Bridge: + addBridgeAttrs(link, linkInfo) + case *GTP: + addGTPAttrs(link, linkInfo) } req.AddData(linkInfo) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) if err != nil { return err } @@ -907,13 +1116,13 @@ func (h *Handle) LinkDel(link Link) error { h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_DELLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_DELLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(base.Index) req.AddData(msg) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) return err } @@ -956,16 +1165,16 @@ func (h *Handle) LinkByName(name string) (Link, error) { return h.linkByNameDump(name) } - req := h.newNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_GETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) req.AddData(msg) - nameData := nl.NewRtAttr(syscall.IFLA_IFNAME, nl.ZeroTerminated(name)) + nameData := nl.NewRtAttr(unix.IFLA_IFNAME, nl.ZeroTerminated(name)) req.AddData(nameData) link, err := execGetLink(req) - if err == syscall.EINVAL { + if err == unix.EINVAL { // older kernels don't support looking up via IFLA_IFNAME // so fall back to dumping all links h.lookupByDump = true @@ -988,16 +1197,16 @@ func (h *Handle) LinkByAlias(alias string) (Link, error) { return h.linkByAliasDump(alias) } - req := h.newNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_GETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) req.AddData(msg) - nameData := nl.NewRtAttr(syscall.IFLA_IFALIAS, nl.ZeroTerminated(alias)) + nameData := nl.NewRtAttr(unix.IFLA_IFALIAS, nl.ZeroTerminated(alias)) req.AddData(nameData) link, err := execGetLink(req) - if err == syscall.EINVAL { + if err == unix.EINVAL { // older kernels don't support looking up via IFLA_IFALIAS // so fall back to dumping all links h.lookupByDump = true @@ -1014,9 +1223,9 @@ func LinkByIndex(index int) (Link, error) { // LinkByIndex finds a link by index and returns a pointer to the object. func (h *Handle) LinkByIndex(index int) (Link, error) { - req := h.newNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_GETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) msg.Index = int32(index) req.AddData(msg) @@ -1024,10 +1233,10 @@ func (h *Handle) LinkByIndex(index int) (Link, error) { } func execGetLink(req *nl.NetlinkRequest) (Link, error) { - msgs, err := req.Execute(syscall.NETLINK_ROUTE, 0) + msgs, err := req.Execute(unix.NETLINK_ROUTE, 0) if err != nil { if errno, ok := err.(syscall.Errno); ok { - if errno == syscall.ENODEV { + if errno == unix.ENODEV { return nil, LinkNotFoundError{fmt.Errorf("Link not found")} } } @@ -1048,7 +1257,7 @@ func execGetLink(req *nl.NetlinkRequest) (Link, error) { // linkDeserialize deserializes a raw message received from netlink into // a link object. -func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) { +func LinkDeserialize(hdr *unix.NlMsghdr, m []byte) (Link, error) { msg := nl.DeserializeIfInfomsg(m) attrs, err := nl.ParseRouteAttr(m[msg.Len():]) @@ -1057,7 +1266,7 @@ func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) { } base := LinkAttrs{Index: int(msg.Index), RawFlags: msg.Flags, Flags: linkFlags(msg.Flags), EncapType: msg.EncapType()} - if msg.Flags&syscall.IFF_PROMISC != 0 { + if msg.Flags&unix.IFF_PROMISC != 0 { base.Promisc = 1 } var ( @@ -1068,7 +1277,7 @@ func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) { ) for _, attr := range attrs { switch attr.Attr.Type { - case syscall.IFLA_LINKINFO: + case unix.IFLA_LINKINFO: infos, err := nl.ParseRouteAttr(attr.Value) if err != nil { return nil, err @@ -1100,8 +1309,16 @@ func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) { link = &Macvtap{} case "gretap": link = &Gretap{} + case "ip6gretap": + link = &Gretap{} case "ipip": link = &Iptun{} + case "sit": + link = &Sittun{} + case "gre": + link = &Gretun{} + case "ip6gre": + link = &Gretun{} case "vti": link = &Vti{} case "vrf": @@ -1131,8 +1348,16 @@ func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) { parseMacvtapData(link, data) case "gretap": parseGretapData(link, data) + case "ip6gretap": + parseGretapData(link, data) case "ipip": parseIptunData(link, data) + case "sit": + parseSittunData(link, data) + case "gre": + parseGretunData(link, data) + case "ip6gre": + parseGretunData(link, data) case "vti": parseVtiData(link, data) case "vrf": @@ -1144,7 +1369,7 @@ func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) { } } } - case syscall.IFLA_ADDRESS: + case unix.IFLA_ADDRESS: var nonzero bool for _, b := range attr.Value { if b != 0 { @@ -1154,39 +1379,41 @@ func LinkDeserialize(hdr *syscall.NlMsghdr, m []byte) (Link, error) { if nonzero { base.HardwareAddr = attr.Value[:] } - case syscall.IFLA_IFNAME: + case unix.IFLA_IFNAME: base.Name = string(attr.Value[:len(attr.Value)-1]) - case syscall.IFLA_MTU: + case unix.IFLA_MTU: base.MTU = int(native.Uint32(attr.Value[0:4])) - case syscall.IFLA_LINK: + case unix.IFLA_LINK: base.ParentIndex = int(native.Uint32(attr.Value[0:4])) - case syscall.IFLA_MASTER: + case unix.IFLA_MASTER: base.MasterIndex = int(native.Uint32(attr.Value[0:4])) - case syscall.IFLA_TXQLEN: + case unix.IFLA_TXQLEN: base.TxQLen = int(native.Uint32(attr.Value[0:4])) - case syscall.IFLA_IFALIAS: + case unix.IFLA_IFALIAS: base.Alias = string(attr.Value[:len(attr.Value)-1]) - case syscall.IFLA_STATS: + case unix.IFLA_STATS: stats32 = attr.Value[:] - case IFLA_STATS64: + case unix.IFLA_STATS64: stats64 = attr.Value[:] - case nl.IFLA_XDP: + case unix.IFLA_XDP: xdp, err := parseLinkXdp(attr.Value[:]) if err != nil { return nil, err } base.Xdp = xdp - case syscall.IFLA_PROTINFO | syscall.NLA_F_NESTED: - if hdr != nil && hdr.Type == syscall.RTM_NEWLINK && - msg.Family == syscall.AF_BRIDGE { + case unix.IFLA_PROTINFO | unix.NLA_F_NESTED: + if hdr != nil && hdr.Type == unix.RTM_NEWLINK && + msg.Family == unix.AF_BRIDGE { attrs, err := nl.ParseRouteAttr(attr.Value[:]) if err != nil { return nil, err } base.Protinfo = parseProtinfo(attrs) } - case syscall.IFLA_OPERSTATE: + case unix.IFLA_OPERSTATE: base.OperState = LinkOperState(uint8(attr.Value[0])) + case unix.IFLA_LINK_NETNSID: + base.NetNsID = int(native.Uint32(attr.Value[0:4])) } } @@ -1216,12 +1443,12 @@ func LinkList() ([]Link, error) { func (h *Handle) LinkList() ([]Link, error) { // NOTE(vish): This duplicates functionality in net/iface_linux.go, but we need // to get the message ourselves to parse link type. - req := h.newNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_DUMP) + req := h.newNetlinkRequest(unix.RTM_GETLINK, unix.NLM_F_DUMP) - msg := nl.NewIfInfomsg(syscall.AF_UNSPEC) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) req.AddData(msg) - msgs, err := req.Execute(syscall.NETLINK_ROUTE, syscall.RTM_NEWLINK) + msgs, err := req.Execute(unix.NETLINK_ROUTE, unix.RTM_NEWLINK) if err != nil { return nil, err } @@ -1241,24 +1468,43 @@ func (h *Handle) LinkList() ([]Link, error) { // LinkUpdate is used to pass information back from LinkSubscribe() type LinkUpdate struct { nl.IfInfomsg - Header syscall.NlMsghdr + Header unix.NlMsghdr Link } // LinkSubscribe takes a chan down which notifications will be sent // when links change. Close the 'done' chan to stop subscription. func LinkSubscribe(ch chan<- LinkUpdate, done <-chan struct{}) error { - return linkSubscribe(netns.None(), netns.None(), ch, done) + return linkSubscribeAt(netns.None(), netns.None(), ch, done, nil, false) } // LinkSubscribeAt works like LinkSubscribe plus it allows the caller // to choose the network namespace in which to subscribe (ns). func LinkSubscribeAt(ns netns.NsHandle, ch chan<- LinkUpdate, done <-chan struct{}) error { - return linkSubscribe(ns, netns.None(), ch, done) + return linkSubscribeAt(ns, netns.None(), ch, done, nil, false) +} + +// LinkSubscribeOptions contains a set of options to use with +// LinkSubscribeWithOptions. +type LinkSubscribeOptions struct { + Namespace *netns.NsHandle + ErrorCallback func(error) + ListExisting bool +} + +// LinkSubscribeWithOptions work like LinkSubscribe but enable to +// provide additional options to modify the behavior. Currently, the +// namespace can be provided as well as an error callback. +func LinkSubscribeWithOptions(ch chan<- LinkUpdate, done <-chan struct{}, options LinkSubscribeOptions) error { + if options.Namespace == nil { + none := netns.None() + options.Namespace = &none + } + return linkSubscribeAt(*options.Namespace, netns.None(), ch, done, options.ErrorCallback, options.ListExisting) } -func linkSubscribe(newNs, curNs netns.NsHandle, ch chan<- LinkUpdate, done <-chan struct{}) error { - s, err := nl.SubscribeAt(newNs, curNs, syscall.NETLINK_ROUTE, syscall.RTNLGRP_LINK) +func linkSubscribeAt(newNs, curNs netns.NsHandle, ch chan<- LinkUpdate, done <-chan struct{}, cberr func(error), listExisting bool) error { + s, err := nl.SubscribeAt(newNs, curNs, unix.NETLINK_ROUTE, unix.RTNLGRP_LINK) if err != nil { return err } @@ -1268,20 +1514,50 @@ func linkSubscribe(newNs, curNs netns.NsHandle, ch chan<- LinkUpdate, done <-cha s.Close() }() } + if listExisting { + req := pkgHandle.newNetlinkRequest(unix.RTM_GETLINK, + unix.NLM_F_DUMP) + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + req.AddData(msg) + if err := s.Send(req); err != nil { + return err + } + } go func() { defer close(ch) for { msgs, err := s.Receive() if err != nil { + if cberr != nil { + cberr(err) + } return } for _, m := range msgs { + if m.Header.Type == unix.NLMSG_DONE { + continue + } + if m.Header.Type == unix.NLMSG_ERROR { + native := nl.NativeEndian() + error := int32(native.Uint32(m.Data[0:4])) + if error == 0 { + continue + } + if cberr != nil { + cberr(syscall.Errno(-error)) + } + return + } ifmsg := nl.DeserializeIfInfomsg(m.Data) - link, err := LinkDeserialize(&m.Header, m.Data) + header := unix.NlMsghdr(m.Header) + link, err := LinkDeserialize(&header, m.Data) if err != nil { + if cberr != nil { + cberr(err) + } return } - ch <- LinkUpdate{IfInfomsg: *ifmsg, Header: m.Header, Link: link} + ch <- LinkUpdate{IfInfomsg: *ifmsg, Header: header, Link: link} } } }() @@ -1356,22 +1632,49 @@ func (h *Handle) LinkSetBrProxyArpWiFi(link Link, mode bool) error { func (h *Handle) setProtinfoAttr(link Link, mode bool, attr int) error { base := link.Attrs() h.ensureIndex(base) - req := h.newNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) - msg := nl.NewIfInfomsg(syscall.AF_BRIDGE) + msg := nl.NewIfInfomsg(unix.AF_BRIDGE) msg.Index = int32(base.Index) req.AddData(msg) - br := nl.NewRtAttr(syscall.IFLA_PROTINFO|syscall.NLA_F_NESTED, nil) + br := nl.NewRtAttr(unix.IFLA_PROTINFO|unix.NLA_F_NESTED, nil) nl.NewRtAttrChild(br, attr, boolToByte(mode)) req.AddData(br) - _, err := req.Execute(syscall.NETLINK_ROUTE, 0) + _, err := req.Execute(unix.NETLINK_ROUTE, 0) if err != nil { return err } return nil } +// LinkSetTxQLen sets the transaction queue length for the link. +// Equivalent to: `ip link set $link txqlen $qlen` +func LinkSetTxQLen(link Link, qlen int) error { + return pkgHandle.LinkSetTxQLen(link, qlen) +} + +// LinkSetTxQLen sets the transaction queue length for the link. +// Equivalent to: `ip link set $link txqlen $qlen` +func (h *Handle) LinkSetTxQLen(link Link, qlen int) error { + base := link.Attrs() + h.ensureIndex(base) + req := h.newNetlinkRequest(unix.RTM_SETLINK, unix.NLM_F_ACK) + + msg := nl.NewIfInfomsg(unix.AF_UNSPEC) + msg.Index = int32(base.Index) + req.AddData(msg) + + b := make([]byte, 4) + native.PutUint32(b, uint32(qlen)) + + data := nl.NewRtAttr(unix.IFLA_TXQLEN, b) + req.AddData(data) + + _, err := req.Execute(unix.NETLINK_ROUTE, 0) + return err +} + func parseVlanData(link Link, data []syscall.NetlinkRouteAttr) { vlan := link.(*Vlan) for _, datum := range data { @@ -1414,6 +1717,10 @@ func parseVxlanData(link Link, data []syscall.NetlinkRouteAttr) { vxlan.L3miss = int8(datum.Value[0]) != 0 case nl.IFLA_VXLAN_UDP_CSUM: vxlan.UDPCSum = int8(datum.Value[0]) != 0 + case nl.IFLA_VXLAN_UDP_ZERO_CSUM6_TX: + vxlan.UDP6ZeroCSumTx = int8(datum.Value[0]) != 0 + case nl.IFLA_VXLAN_UDP_ZERO_CSUM6_RX: + vxlan.UDP6ZeroCSumRx = int8(datum.Value[0]) != 0 case nl.IFLA_VXLAN_GBP: vxlan.GBP = true case nl.IFLA_VXLAN_FLOWBASED: @@ -1516,7 +1823,8 @@ func parseMacvtapData(link Link, data []syscall.NetlinkRouteAttr) { func parseMacvlanData(link Link, data []syscall.NetlinkRouteAttr) { macv := link.(*Macvlan) for _, datum := range data { - if datum.Attr.Type == nl.IFLA_MACVLAN_MODE { + switch datum.Attr.Type { + case nl.IFLA_MACVLAN_MODE: switch native.Uint32(datum.Value[0:4]) { case nl.MACVLAN_MODE_PRIVATE: macv.Mode = MACVLAN_MODE_PRIVATE @@ -1529,7 +1837,16 @@ func parseMacvlanData(link Link, data []syscall.NetlinkRouteAttr) { case nl.MACVLAN_MODE_SOURCE: macv.Mode = MACVLAN_MODE_SOURCE } - return + case nl.IFLA_MACVLAN_MACADDR_COUNT: + macv.MACAddrs = make([]net.HardwareAddr, 0, int(native.Uint32(datum.Value[0:4]))) + case nl.IFLA_MACVLAN_MACADDR_DATA: + macs, err := nl.ParseRouteAttr(datum.Value[:]) + if err != nil { + panic(fmt.Sprintf("failed to ParseRouteAttr for IFLA_MACVLAN_MACADDR_DATA: %v", err)) + } + for _, macDatum := range macs { + macv.MACAddrs = append(macv.MACAddrs, net.HardwareAddr(macDatum.Value[0:6])) + } } } } @@ -1537,19 +1854,19 @@ func parseMacvlanData(link Link, data []syscall.NetlinkRouteAttr) { // copied from pkg/net_linux.go func linkFlags(rawFlags uint32) net.Flags { var f net.Flags - if rawFlags&syscall.IFF_UP != 0 { + if rawFlags&unix.IFF_UP != 0 { f |= net.FlagUp } - if rawFlags&syscall.IFF_BROADCAST != 0 { + if rawFlags&unix.IFF_BROADCAST != 0 { f |= net.FlagBroadcast } - if rawFlags&syscall.IFF_LOOPBACK != 0 { + if rawFlags&unix.IFF_LOOPBACK != 0 { f |= net.FlagLoopback } - if rawFlags&syscall.IFF_POINTOPOINT != 0 { + if rawFlags&unix.IFF_POINTOPOINT != 0 { f |= net.FlagPointToPoint } - if rawFlags&syscall.IFF_MULTICAST != 0 { + if rawFlags&unix.IFF_MULTICAST != 0 { f |= net.FlagMulticast } return f @@ -1564,12 +1881,17 @@ func addGretapAttrs(gretap *Gretap, linkInfo *nl.RtAttr) { return } - ip := gretap.Local.To4() - if ip != nil { + if ip := gretap.Local; ip != nil { + if ip.To4() != nil { + ip = ip.To4() + } nl.NewRtAttrChild(data, nl.IFLA_GRE_LOCAL, []byte(ip)) } - ip = gretap.Remote.To4() - if ip != nil { + + if ip := gretap.Remote; ip != nil { + if ip.To4() != nil { + ip = ip.To4() + } nl.NewRtAttrChild(data, nl.IFLA_GRE_REMOTE, []byte(ip)) } @@ -1608,9 +1930,9 @@ func parseGretapData(link Link, data []syscall.NetlinkRouteAttr) { case nl.IFLA_GRE_IKEY: gre.OKey = ntohl(datum.Value[0:4]) case nl.IFLA_GRE_LOCAL: - gre.Local = net.IP(datum.Value[0:4]) + gre.Local = net.IP(datum.Value[0:16]) case nl.IFLA_GRE_REMOTE: - gre.Remote = net.IP(datum.Value[0:4]) + gre.Remote = net.IP(datum.Value[0:16]) case nl.IFLA_GRE_ENCAP_SPORT: gre.EncapSport = ntohs(datum.Value[0:2]) case nl.IFLA_GRE_ENCAP_DPORT: @@ -1631,7 +1953,87 @@ func parseGretapData(link Link, data []syscall.NetlinkRouteAttr) { case nl.IFLA_GRE_ENCAP_FLAGS: gre.EncapFlags = native.Uint16(datum.Value[0:2]) case nl.IFLA_GRE_COLLECT_METADATA: - gre.FlowBased = int8(datum.Value[0]) != 0 + if len(datum.Value) > 0 { + gre.FlowBased = int8(datum.Value[0]) != 0 + } + } + } +} + +func addGretunAttrs(gre *Gretun, linkInfo *nl.RtAttr) { + data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil) + + if ip := gre.Local; ip != nil { + if ip.To4() != nil { + ip = ip.To4() + } + nl.NewRtAttrChild(data, nl.IFLA_GRE_LOCAL, []byte(ip)) + } + + if ip := gre.Remote; ip != nil { + if ip.To4() != nil { + ip = ip.To4() + } + nl.NewRtAttrChild(data, nl.IFLA_GRE_REMOTE, []byte(ip)) + } + + if gre.IKey != 0 { + nl.NewRtAttrChild(data, nl.IFLA_GRE_IKEY, htonl(gre.IKey)) + gre.IFlags |= uint16(nl.GRE_KEY) + } + + if gre.OKey != 0 { + nl.NewRtAttrChild(data, nl.IFLA_GRE_OKEY, htonl(gre.OKey)) + gre.OFlags |= uint16(nl.GRE_KEY) + } + + nl.NewRtAttrChild(data, nl.IFLA_GRE_IFLAGS, htons(gre.IFlags)) + nl.NewRtAttrChild(data, nl.IFLA_GRE_OFLAGS, htons(gre.OFlags)) + + if gre.Link != 0 { + nl.NewRtAttrChild(data, nl.IFLA_GRE_LINK, nl.Uint32Attr(gre.Link)) + } + + nl.NewRtAttrChild(data, nl.IFLA_GRE_PMTUDISC, nl.Uint8Attr(gre.PMtuDisc)) + nl.NewRtAttrChild(data, nl.IFLA_GRE_TTL, nl.Uint8Attr(gre.Ttl)) + nl.NewRtAttrChild(data, nl.IFLA_GRE_TOS, nl.Uint8Attr(gre.Tos)) + nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_TYPE, nl.Uint16Attr(gre.EncapType)) + nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_FLAGS, nl.Uint16Attr(gre.EncapFlags)) + nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_SPORT, htons(gre.EncapSport)) + nl.NewRtAttrChild(data, nl.IFLA_GRE_ENCAP_DPORT, htons(gre.EncapDport)) +} + +func parseGretunData(link Link, data []syscall.NetlinkRouteAttr) { + gre := link.(*Gretun) + for _, datum := range data { + switch datum.Attr.Type { + case nl.IFLA_GRE_OKEY: + gre.IKey = ntohl(datum.Value[0:4]) + case nl.IFLA_GRE_IKEY: + gre.OKey = ntohl(datum.Value[0:4]) + case nl.IFLA_GRE_LOCAL: + gre.Local = net.IP(datum.Value[0:16]) + case nl.IFLA_GRE_REMOTE: + gre.Remote = net.IP(datum.Value[0:16]) + case nl.IFLA_GRE_IFLAGS: + gre.IFlags = ntohs(datum.Value[0:2]) + case nl.IFLA_GRE_OFLAGS: + gre.OFlags = ntohs(datum.Value[0:2]) + + case nl.IFLA_GRE_TTL: + gre.Ttl = uint8(datum.Value[0]) + case nl.IFLA_GRE_TOS: + gre.Tos = uint8(datum.Value[0]) + case nl.IFLA_GRE_PMTUDISC: + gre.PMtuDisc = uint8(datum.Value[0]) + case nl.IFLA_GRE_ENCAP_TYPE: + gre.EncapType = native.Uint16(datum.Value[0:2]) + case nl.IFLA_GRE_ENCAP_FLAGS: + gre.EncapFlags = native.Uint16(datum.Value[0:2]) + case nl.IFLA_GRE_ENCAP_SPORT: + gre.EncapSport = ntohs(datum.Value[0:2]) + case nl.IFLA_GRE_ENCAP_DPORT: + gre.EncapDport = ntohs(datum.Value[0:2]) } } } @@ -1645,12 +2047,15 @@ func parseLinkStats64(data []byte) *LinkStatistics { } func addXdpAttrs(xdp *LinkXdp, req *nl.NetlinkRequest) { - attrs := nl.NewRtAttr(nl.IFLA_XDP|syscall.NLA_F_NESTED, nil) + attrs := nl.NewRtAttr(unix.IFLA_XDP|unix.NLA_F_NESTED, nil) b := make([]byte, 4) native.PutUint32(b, uint32(xdp.Fd)) nl.NewRtAttrChild(attrs, nl.IFLA_XDP_FD, b) - native.PutUint32(b, xdp.Flags) - nl.NewRtAttrChild(attrs, nl.IFLA_XDP_FLAGS, b) + if xdp.Flags != 0 { + b := make([]byte, 4) + native.PutUint32(b, xdp.Flags) + nl.NewRtAttrChild(attrs, nl.IFLA_XDP_FLAGS, b) + } req.AddData(attrs) } @@ -1676,6 +2081,12 @@ func parseLinkXdp(data []byte) (*LinkXdp, error) { } func addIptunAttrs(iptun *Iptun, linkInfo *nl.RtAttr) { + if iptun.FlowBased { + // In flow based mode, no other attributes need to be configured + nl.NewRtAttrChild(linkInfo, nl.IFLA_IPTUN_COLLECT_METADATA, boolAttr(iptun.FlowBased)) + return + } + data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil) ip := iptun.Local.To4() @@ -1694,6 +2105,10 @@ func addIptunAttrs(iptun *Iptun, linkInfo *nl.RtAttr) { nl.NewRtAttrChild(data, nl.IFLA_IPTUN_PMTUDISC, nl.Uint8Attr(iptun.PMtuDisc)) nl.NewRtAttrChild(data, nl.IFLA_IPTUN_TTL, nl.Uint8Attr(iptun.Ttl)) nl.NewRtAttrChild(data, nl.IFLA_IPTUN_TOS, nl.Uint8Attr(iptun.Tos)) + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_TYPE, nl.Uint16Attr(iptun.EncapType)) + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_FLAGS, nl.Uint16Attr(iptun.EncapFlags)) + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_SPORT, htons(iptun.EncapSport)) + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_DPORT, htons(iptun.EncapDport)) } func parseIptunData(link Link, data []syscall.NetlinkRouteAttr) { @@ -1710,6 +2125,72 @@ func parseIptunData(link Link, data []syscall.NetlinkRouteAttr) { iptun.Tos = uint8(datum.Value[0]) case nl.IFLA_IPTUN_PMTUDISC: iptun.PMtuDisc = uint8(datum.Value[0]) + case nl.IFLA_IPTUN_ENCAP_SPORT: + iptun.EncapSport = ntohs(datum.Value[0:2]) + case nl.IFLA_IPTUN_ENCAP_DPORT: + iptun.EncapDport = ntohs(datum.Value[0:2]) + case nl.IFLA_IPTUN_ENCAP_TYPE: + iptun.EncapType = native.Uint16(datum.Value[0:2]) + case nl.IFLA_IPTUN_ENCAP_FLAGS: + iptun.EncapFlags = native.Uint16(datum.Value[0:2]) + case nl.IFLA_IPTUN_COLLECT_METADATA: + iptun.FlowBased = int8(datum.Value[0]) != 0 + } + } +} + +func addSittunAttrs(sittun *Sittun, linkInfo *nl.RtAttr) { + data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil) + + if sittun.Link != 0 { + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_LINK, nl.Uint32Attr(sittun.Link)) + } + + ip := sittun.Local.To4() + if ip != nil { + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_LOCAL, []byte(ip)) + } + + ip = sittun.Remote.To4() + if ip != nil { + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_REMOTE, []byte(ip)) + } + + if sittun.Ttl > 0 { + // Would otherwise fail on 3.10 kernel + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_TTL, nl.Uint8Attr(sittun.Ttl)) + } + + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_TOS, nl.Uint8Attr(sittun.Tos)) + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_PMTUDISC, nl.Uint8Attr(sittun.PMtuDisc)) + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_TYPE, nl.Uint16Attr(sittun.EncapType)) + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_FLAGS, nl.Uint16Attr(sittun.EncapFlags)) + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_SPORT, htons(sittun.EncapSport)) + nl.NewRtAttrChild(data, nl.IFLA_IPTUN_ENCAP_DPORT, htons(sittun.EncapDport)) +} + +func parseSittunData(link Link, data []syscall.NetlinkRouteAttr) { + sittun := link.(*Sittun) + for _, datum := range data { + switch datum.Attr.Type { + case nl.IFLA_IPTUN_LOCAL: + sittun.Local = net.IP(datum.Value[0:4]) + case nl.IFLA_IPTUN_REMOTE: + sittun.Remote = net.IP(datum.Value[0:4]) + case nl.IFLA_IPTUN_TTL: + sittun.Ttl = uint8(datum.Value[0]) + case nl.IFLA_IPTUN_TOS: + sittun.Tos = uint8(datum.Value[0]) + case nl.IFLA_IPTUN_PMTUDISC: + sittun.PMtuDisc = uint8(datum.Value[0]) + case nl.IFLA_IPTUN_ENCAP_TYPE: + sittun.EncapType = native.Uint16(datum.Value[0:2]) + case nl.IFLA_IPTUN_ENCAP_FLAGS: + sittun.EncapFlags = native.Uint16(datum.Value[0:2]) + case nl.IFLA_IPTUN_ENCAP_SPORT: + sittun.EncapSport = ntohs(datum.Value[0:2]) + case nl.IFLA_IPTUN_ENCAP_DPORT: + sittun.EncapDport = ntohs(datum.Value[0:2]) } } } @@ -1817,3 +2298,57 @@ func parseGTPData(link Link, data []syscall.NetlinkRouteAttr) { } } } + +// LinkSetBondSlave add slave to bond link via ioctl interface. +func LinkSetBondSlave(link Link, master *Bond) error { + fd, err := getSocketUDP() + if err != nil { + return err + } + defer syscall.Close(fd) + + ifreq := newIocltSlaveReq(link.Attrs().Name, master.Attrs().Name) + + _, _, errno := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), unix.SIOCBONDENSLAVE, uintptr(unsafe.Pointer(ifreq))) + if errno != 0 { + return fmt.Errorf("Failed to enslave %q to %q, errno=%v", link.Attrs().Name, master.Attrs().Name, errno) + } + return nil +} + +// VethPeerIndex get veth peer index. +func VethPeerIndex(link *Veth) (int, error) { + fd, err := getSocketUDP() + if err != nil { + return -1, err + } + defer syscall.Close(fd) + + ifreq, sSet := newIocltStringSetReq(link.Name) + _, _, errno := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), SIOCETHTOOL, uintptr(unsafe.Pointer(ifreq))) + if errno != 0 { + return -1, fmt.Errorf("SIOCETHTOOL request for %q failed, errno=%v", link.Attrs().Name, errno) + } + + gstrings := ðtoolGstrings{ + cmd: ETHTOOL_GSTRINGS, + stringSet: ETH_SS_STATS, + length: sSet.data[0], + } + ifreq.Data = uintptr(unsafe.Pointer(gstrings)) + _, _, errno = syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), SIOCETHTOOL, uintptr(unsafe.Pointer(ifreq))) + if errno != 0 { + return -1, fmt.Errorf("SIOCETHTOOL request for %q failed, errno=%v", link.Attrs().Name, errno) + } + + stats := ðtoolStats{ + cmd: ETHTOOL_GSTATS, + nStats: gstrings.length, + } + ifreq.Data = uintptr(unsafe.Pointer(stats)) + _, _, errno = syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), SIOCETHTOOL, uintptr(unsafe.Pointer(ifreq))) + if errno != 0 { + return -1, fmt.Errorf("SIOCETHTOOL request for %q failed, errno=%v", link.Attrs().Name, errno) + } + return int(stats.data[0]), nil +} |