This patch adds three helpers uip_tcp_hdrlen(), uip_tcp_len(),
uip_tcp_payloadlen() to return TCP header length, TCP totoal
length, and tcp payload length.
Signed-off-by: Asias He <asias.hejun@xxxxxxxxx>
---
tools/kvm/include/kvm/uip.h | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/tools/kvm/include/kvm/uip.h b/tools/kvm/include/kvm/uip.h
index a772fdf..2ac48d7 100644
--- a/tools/kvm/include/kvm/uip.h
+++ b/tools/kvm/include/kvm/uip.h
@@ -203,6 +203,25 @@ static inline u16 uip_udp_len(struct uip_udp *udp)
return ntohs(udp->len);
}
+static inline u16 uip_tcp_hdrlen(struct uip_tcp *tcp)
+{
+ return (tcp->off >> 4) * 4;
+}
+
+static inline u16 uip_tcp_len(struct uip_tcp *tcp)
+{
+ struct uip_ip *ip;
+
+ ip = &tcp->ip;
+
+ return uip_ip_len(ip) - uip_ip_hdrlen(ip);
+}
+
+static inline u16 uip_tcp_payloadlen(struct uip_tcp *tcp)
+{
+ return uip_tcp_len(tcp) - uip_tcp_hdrlen(tcp);
+}
+
static inline u16 uip_eth_hdrlen(struct uip_eth *eth)
{
return sizeof(*eth);
--
1.7.5.4
--
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