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[qdisc] refactor all commands to use qdiscModify function

This commit is contained in:
chantra 2015-11-12 09:55:13 -05:00
parent e1c5c4e664
commit eeca6ddad9
1 changed files with 18 additions and 20 deletions
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38
qdisc_linux.go
View File

@ -13,42 +13,37 @@ import (
// QdiscDel will delete a qdisc from the system.
// Equivalent to: `tc qdisc del $qdisc`
func QdiscDel(qdisc Qdisc) error {
req := nl.NewNetlinkRequest(syscall.RTM_DELQDISC, syscall.NLM_F_ACK)
base := qdisc.Attrs()
msg := &nl.TcMsg{
Family: nl.FAMILY_ALL,
Ifindex: int32(base.LinkIndex),
Handle: base.Handle,
Parent: base.Parent,
}
req.AddData(msg)
_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
return err
return qdiscModify(syscall.RTM_DELQDISC, 0, qdisc)
}
// QdiscChanf will change a qdisc in place
// QdiscChange will change a qdisc in place
// Equivalent to: `tc qdisc change $qdisc`
// The parent and handle MUST NOT be changed.
func QdiscChange(qdisc Qdisc) error {
return qdiscModify(qdisc, 0)
return qdiscModify(syscall.RTM_NEWQDISC, 0, qdisc)
}
// QdiscReplace will replace a qdisc to the system.
// Equivalent to: `tc qdisc replace $qdisc`
// The handle MUST change.
func QdiscReplace(qdisc Qdisc) error {
return qdiscModify(qdisc, syscall.NLM_F_CREATE|syscall.NLM_F_REPLACE)
return qdiscModify(
syscall.RTM_NEWQDISC,
syscall.NLM_F_CREATE|syscall.NLM_F_REPLACE,
qdisc)
}
// QdiscAdd will add a qdisc to the system.
// Equivalent to: `tc qdisc add $qdisc`
func QdiscAdd(qdisc Qdisc) error {
return qdiscModify(qdisc, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL)
return qdiscModify(
syscall.RTM_NEWQDISC,
syscall.NLM_F_CREATE|syscall.NLM_F_EXCL,
qdisc)
}
func qdiscModify(qdisc Qdisc, flags int) error {
req := nl.NewNetlinkRequest(syscall.RTM_NEWQDISC, flags|syscall.NLM_F_ACK)
func qdiscModify(cmd, flags int, qdisc Qdisc) error {
req := nl.NewNetlinkRequest(cmd, flags|syscall.NLM_F_ACK)
base := qdisc.Attrs()
msg := &nl.TcMsg{
Family: nl.FAMILY_ALL,
@ -58,8 +53,11 @@ func qdiscModify(qdisc Qdisc, flags int) error {
}
req.AddData(msg)
if err := qdiscPayload(req, qdisc); err != nil {
return err
// When deleting don't bother building the rest of the netlink payload
if cmd != syscall.RTM_DELQDISC {
if err := qdiscPayload(req, qdisc); err != nil {
return err
}
}
_, err := req.Execute(syscall.NETLINK_ROUTE, 0)