Exemplo n.º 1
0
// Pack Service to a set of nlattrs.
// If full is given, include service settings, otherwise only the identifying fields are given.
func (self *Service) attrs(full bool) nlgo.AttrSlice {
	var attrs nlgo.AttrSlice

	if self.FwMark != 0 {
		attrs = append(attrs,
			nlattr(IPVS_SVC_ATTR_AF, nlgo.U16(self.Af)),
			nlattr(IPVS_SVC_ATTR_FWMARK, nlgo.U32(self.FwMark)),
		)
	} else if self.Protocol != 0 && self.Addr != nil && self.Port != 0 {
		attrs = append(attrs,
			nlattr(IPVS_SVC_ATTR_AF, nlgo.U16(self.Af)),
			nlattr(IPVS_SVC_ATTR_PROTOCOL, nlgo.U16(self.Protocol)),
			nlattr(IPVS_SVC_ATTR_ADDR, packAddr(self.Af, self.Addr)),
			nlattr(IPVS_SVC_ATTR_PORT, packPort(self.Port)),
		)
	} else {
		panic("Incomplete service id fields")
	}

	if full {
		attrs = append(attrs,
			nlattr(IPVS_SVC_ATTR_SCHED_NAME, nlgo.NulString(self.SchedName)),
			nlattr(IPVS_SVC_ATTR_FLAGS, pack(&self.Flags)),
			nlattr(IPVS_SVC_ATTR_TIMEOUT, nlgo.U32(self.Timeout)),
			nlattr(IPVS_SVC_ATTR_NETMASK, nlgo.U32(self.Netmask)),
		)
	}

	return attrs
}
Exemplo n.º 2
0
func (self *NamedPortManager) AddName(name string) error {
	self.lock.Lock()
	defer self.lock.Unlock()
	self.trackingNames = append(self.trackingNames, name)

	req := syscall.NetlinkMessage{
		Header: syscall.NlMsghdr{
			Type:  syscall.RTM_GETLINK,
			Flags: syscall.NLM_F_DUMP,
		},
	}
	(*nlgo.RtMessage)(&req).Set(
		syscall.RtMsg{},
		nlgo.AttrSlice{
			nlgo.Attr{
				Header: syscall.NlAttr{
					Type: syscall.IFLA_IFNAME,
				},
				Value: nlgo.NulString(name),
			},
		})
	if res, err := self.hub.Sync(req); err != nil {
		return err
	} else {
		for _, r := range res {
			self.NetlinkListen(r)
		}
	}
	return nil
}
Exemplo n.º 3
0
func (self *NamedPortManager) AddName(name string) error {
	self.lock.Lock()
	defer self.lock.Unlock()
	self.trackingNames = append(self.trackingNames, name)

	if res, err := self.hub.Request(syscall.RTM_GETLINK, syscall.NLM_F_DUMP, nil, nlgo.AttrSlice{
		nlgo.Attr{
			Header: syscall.NlAttr{
				Type: syscall.IFLA_IFNAME,
			},
			Value: nlgo.NulString(name),
		},
	}); err != nil {
		return err
	} else {
		for _, r := range res {
			self.RtListen(r)
		}
	}
	return nil
}
Exemplo n.º 4
0
func GetByName(hub *nlgo.RtHub, name string) (syscall.IfInfomsg, error) {
	var ret syscall.IfInfomsg

	req := &syscall.NetlinkMessage{
		Header: syscall.NlMsghdr{
			Type:  syscall.RTM_GETLINK,
			Flags: syscall.NLM_F_REQUEST,
		},
	}
	(*nlgo.IfInfoMessage)(req).Set(
		syscall.IfInfomsg{},
		nlgo.AttrSlice{
			nlgo.Attr{
				Header: syscall.NlAttr{
					Type: syscall.IFLA_IFNAME,
				},
				Value: nlgo.NulString(name),
			},
		})

	if msgs, err := hub.Sync(*req); err != nil {
		return ret, err
	} else {
		for _, msg := range msgs {
			switch msg.Header.Type {
			case syscall.RTM_NEWLINK:
				info := (nlgo.IfInfoMessage)(msg)
				if attrs, err := info.Attrs(); err != nil {
					continue
				} else if string(attrs.(nlgo.AttrMap).Get(syscall.IFLA_IFNAME).(nlgo.NulString)) == name {
					return info.IfInfo(), nil
				}
			}
		}
	}
	return ret, fmt.Errorf("response empty")
}