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Add support for ignore-df flag in gretap links

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Signed-off-by: Giuseppe Ognibene <ognibenegiuseppe8@gmail.com>
This commit is contained in:
Giuseppe Ognibene
2025-09-02 12:47:05 +02:00
committed by Vish (Ishaya) Abrams
parent 5f641a7410
commit 481da0d6a4
3 changed files with 12 additions and 0 deletions
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8
link.go
View File

@@ -1118,8 +1118,16 @@ type Gretap struct {
EncapFlags uint16 EncapFlags uint16
Link uint32 Link uint32
FlowBased bool FlowBased bool
IgnoreDf GretapIgnoreDf
} }
type GretapIgnoreDf uint8
const (
GRETAP_IGNORE_DF_FALSE = iota
GRETAP_IGNORE_DF_TRUE
)
func (gretap *Gretap) Attrs() *LinkAttrs { func (gretap *Gretap) Attrs() *LinkAttrs {
return &gretap.LinkAttrs return &gretap.LinkAttrs
} }

3
link_linux.go
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@@ -3461,6 +3461,9 @@ func addGretapAttrs(gretap *Gretap, linkInfo *nl.RtAttr) {
data.AddRtAttr(nl.IFLA_GRE_ENCAP_FLAGS, nl.Uint16Attr(gretap.EncapFlags)) data.AddRtAttr(nl.IFLA_GRE_ENCAP_FLAGS, nl.Uint16Attr(gretap.EncapFlags))
data.AddRtAttr(nl.IFLA_GRE_ENCAP_SPORT, htons(gretap.EncapSport)) data.AddRtAttr(nl.IFLA_GRE_ENCAP_SPORT, htons(gretap.EncapSport))
data.AddRtAttr(nl.IFLA_GRE_ENCAP_DPORT, htons(gretap.EncapDport)) data.AddRtAttr(nl.IFLA_GRE_ENCAP_DPORT, htons(gretap.EncapDport))
if gretap.IgnoreDf != GRETAP_IGNORE_DF_FALSE {
data.AddRtAttr(nl.IFLA_GRE_IGNORE_DF, nl.Uint8Attr(uint8(gretap.IgnoreDf)))
}
} }
func parseGretapData(link Link, data []syscall.NetlinkRouteAttr) { func parseGretapData(link Link, data []syscall.NetlinkRouteAttr) {

1
nl/link_linux.go
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@@ -274,6 +274,7 @@ const (
IFLA_GRE_ENCAP_SPORT IFLA_GRE_ENCAP_SPORT
IFLA_GRE_ENCAP_DPORT IFLA_GRE_ENCAP_DPORT
IFLA_GRE_COLLECT_METADATA IFLA_GRE_COLLECT_METADATA
IFLA_GRE_IGNORE_DF
IFLA_GRE_MAX = IFLA_GRE_COLLECT_METADATA IFLA_GRE_MAX = IFLA_GRE_COLLECT_METADATA
) )