From: Asias He <asias.hejun@gmail.com>
Date: Wed, 29 Jun 2011 08:47:21 +0000 (+0800)
Subject: kvm tools: Add helper to return start address of TCP payload
X-Git-Tag: next-20110824~3^2~171
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e051b5422ff7725e6024406b06664b4bae625b7e;p=karo-tx-linux.git

kvm tools: Add helper to return start address of TCP payload

uip_tcp_payload() returns start address of TCP payload in a TCP package.

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---

diff --git a/tools/kvm/include/kvm/uip.h b/tools/kvm/include/kvm/uip.h
index 2ac48d7eb6f3..a3fd1b071a87 100644
--- a/tools/kvm/include/kvm/uip.h
+++ b/tools/kvm/include/kvm/uip.h
@@ -222,6 +222,11 @@ static inline u16 uip_tcp_payloadlen(struct uip_tcp *tcp)
 	return uip_tcp_len(tcp) - uip_tcp_hdrlen(tcp);
 }
 
+static inline u8 *uip_tcp_payload(struct uip_tcp *tcp)
+{
+	return (u8 *)&tcp->sport + uip_tcp_hdrlen(tcp);
+}
+
 static inline u16 uip_eth_hdrlen(struct uip_eth *eth)
 {
 	return sizeof(*eth);