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add more srv6 encap mode consts #1146

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add more srv6 encap mode consts #1146

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12 changes: 12 additions & 0 deletions nl/seg6_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -37,9 +37,13 @@ func (s1 *IPv6SrHdr) Equal(s2 IPv6SrHdr) bool {
}

// seg6 encap mode
// from include/uapi/linux/seg6_iptunnel.h
const (
SEG6_IPTUN_MODE_INLINE = iota
SEG6_IPTUN_MODE_ENCAP
SEG6_IPTUN_MODE_L2ENCAP
SEG6_IPTUN_MODE_ENCAP_RED
SEG6_IPTUN_MODE_L2ENCAP_RED
)

// number of nested RTATTR
Expand All @@ -49,6 +53,7 @@ const (
SEG6_IPTUNNEL_SRH
__SEG6_IPTUNNEL_MAX
)

const (
SEG6_IPTUNNEL_MAX = __SEG6_IPTUNNEL_MAX - 1
)
Expand Down Expand Up @@ -121,6 +126,7 @@ func DecodeSEG6Srh(buf []byte) ([]net.IP, error) {
}
return srh.Segments, nil
}

func EncodeSEG6Srh(segments []net.IP) ([]byte, error) {
nsegs := len(segments) // nsegs: number of segments
if nsegs == 0 {
Expand Down Expand Up @@ -149,6 +155,12 @@ func SEG6EncapModeString(mode int) string {
return "inline"
case SEG6_IPTUN_MODE_ENCAP:
return "encap"
case SEG6_IPTUN_MODE_L2ENCAP:
return "l2encap"
case SEG6_IPTUN_MODE_ENCAP_RED:
return "encap.red"
case SEG6_IPTUN_MODE_L2ENCAP_RED:
return "l2encap.red"
Comment on lines +158 to +163
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@akerouanton akerouanton Nov 24, 2025

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These matches https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/tree/ip/iproute_lwtunnel.c?id=2a82227f984b3f97354e4a490d3f172eedf07f63#n133:

static const char *seg6_mode_types[] = {
	[SEG6_IPTUN_MODE_INLINE]	= "inline",
	[SEG6_IPTUN_MODE_ENCAP]		= "encap",
	[SEG6_IPTUN_MODE_L2ENCAP]	= "l2encap",
	[SEG6_IPTUN_MODE_ENCAP_RED]	= "encap.red",
	[SEG6_IPTUN_MODE_L2ENCAP_RED]	= "l2encap.red",
};

}
return "unknown"
}