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path: root/pkg/tcpip/buffer/prependable.go
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Diffstat (limited to 'pkg/tcpip/buffer/prependable.go')
-rw-r--r--pkg/tcpip/buffer/prependable.go8
1 files changed, 7 insertions, 1 deletions
diff --git a/pkg/tcpip/buffer/prependable.go b/pkg/tcpip/buffer/prependable.go
index 2f9a23d61..57d1922ab 100644
--- a/pkg/tcpip/buffer/prependable.go
+++ b/pkg/tcpip/buffer/prependable.go
@@ -42,7 +42,7 @@ func NewPrependableFromView(v View, extraCap int) Prependable {
if extraCap == 0 {
return Prependable{buf: v, usedIdx: 0}
}
- buf := make([]byte, extraCap, extraCap + len(v))
+ buf := make([]byte, extraCap, extraCap+len(v))
buf = append(buf, v...)
return Prependable{buf: buf, usedIdx: extraCap}
}
@@ -83,3 +83,9 @@ func (p *Prependable) Prepend(size int) []byte {
p.usedIdx -= size
return p.View()[:size:size]
}
+
+// DeepCopy copies p and the bytes backing it.
+func (p Prependable) DeepCopy() Prependable {
+ p.buf = append(View(nil), p.buf...)
+ return p
+}