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authorkevin.xu <cming.xu@gmail.com>2020-04-27 21:51:31 +0800
committerGitHub <noreply@github.com>2020-04-27 21:51:31 +0800
commite896ca54db67524afc20b644d43c72185e72dc0e (patch)
tree2a16f3a62a5cafd098f1f028c621f1b655589d69 /pkg/tcpip/header/ipv4.go
parent1f19624fa127d7d59cabe29593cc80b7fe6c81f8 (diff)
parent3c67754663f424f2ebbc0ff2a4c80e30618d5355 (diff)
Merge pull request #1 from google/master
catch up
Diffstat (limited to 'pkg/tcpip/header/ipv4.go')
-rw-r--r--pkg/tcpip/header/ipv4.go5
1 files changed, 3 insertions, 2 deletions
diff --git a/pkg/tcpip/header/ipv4.go b/pkg/tcpip/header/ipv4.go
index e5360e7c1..76839eb92 100644
--- a/pkg/tcpip/header/ipv4.go
+++ b/pkg/tcpip/header/ipv4.go
@@ -38,7 +38,8 @@ const (
// IPv4Fields contains the fields of an IPv4 packet. It is used to describe the
// fields of a packet that needs to be encoded.
type IPv4Fields struct {
- // IHL is the "internet header length" field of an IPv4 packet.
+ // IHL is the "internet header length" field of an IPv4 packet. The value
+ // is in bytes.
IHL uint8
// TOS is the "type of service" field of an IPv4 packet.
@@ -138,7 +139,7 @@ func IPVersion(b []byte) int {
}
// HeaderLength returns the value of the "header length" field of the ipv4
-// header.
+// header. The length returned is in bytes.
func (b IPv4) HeaderLength() uint8 {
return (b[versIHL] & 0xf) * 4
}