kvm tools: Add helpers to test whether SYN or FIN bit is set.

This patch adds too helpers uip_tcp_is_syn(), uip_tcp_is_fin() to check if SYN and
FIN bit is set.

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 a3fd1b071a876d9bac08aab345089bd66930a45d..558568062dcb2e9858c77af5b91f0f8ebee50fd4 100644 (file)
--- a/tools/kvm/include/kvm/uip.h
+++ b/tools/kvm/include/kvm/uip.h
@@ -18,6 +18,13 @@
 #define UIP_IP_TTL             0X40
 #define UIP_IP_P_UDP           0X11
 
+#define UIP_TCP_FLAG_FIN       1
+#define UIP_TCP_FLAG_SYN       2
+#define UIP_TCP_FLAG_RST       4
+#define UIP_TCP_FLAG_PSH       8
+#define UIP_TCP_FLAG_ACK       16
+#define UIP_TCP_FLAG_URG       32
+
 /*
  * IP package maxium len == 64 KBytes
  * IP header == 20 Bytes
@@ -227,6 +234,16 @@ static inline u8 *uip_tcp_payload(struct uip_tcp *tcp)
        return (u8 *)&tcp->sport + uip_tcp_hdrlen(tcp);
 }
 
+static inline bool uip_tcp_is_syn(struct uip_tcp *tcp)
+{
+       return (tcp->flg & UIP_TCP_FLAG_SYN) != 0;
+}
+
+static inline bool uip_tcp_is_fin(struct uip_tcp *tcp)
+{
+       return (tcp->flg & UIP_TCP_FLAG_FIN) != 0;
+}
+
 static inline u16 uip_eth_hdrlen(struct uip_eth *eth)
 {
        return sizeof(*eth);