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

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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>
This commit is contained in:
Asias He
2015-06-01 16:39:45 +01:00
committed by Will Deacon
parent d5768d2dff
commit c6d1f44cf8
1 changed files with 17 additions and 0 deletions
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include/kvm/uip.h
+17
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@@ -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);