Guest's initial sequence number can be found in the SYN package that
guest send to us to intialize a TCP session.
Remote server's initial sequence number is faked. RFC 793 specifies
that the ISN should be viewed as a 32-bit counter that increments
by one every 4 microseconds. For simplicity's sake, current
implementation in uip just returns a constant.
Signed-off-by: Asias He <asias.hejun@xxxxxxxxx>
---
tools/kvm/include/kvm/uip.h | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/tools/kvm/include/kvm/uip.h b/tools/kvm/include/kvm/uip.h
index 5585680..46cec20 100644
--- a/tools/kvm/include/kvm/uip.h
+++ b/tools/kvm/include/kvm/uip.h
@@ -244,6 +244,19 @@ static inline bool uip_tcp_is_fin(struct uip_tcp *tcp)
return (tcp->flg & UIP_TCP_FLAG_FIN) != 0;
}
+static inline u32 uip_tcp_isn(struct uip_tcp *tcp)
+{
+ return ntohl(tcp->seq);
+}
+
+static inline u32 uip_tcp_isn_alloc(void)
+{
+ /*
+ * FIXME: should increase every 4ms
+ */
+ return 10000000;
+}
+
static inline u16 uip_eth_hdrlen(struct uip_eth *eth)
{
return sizeof(*eth);
--
1.7.5.4
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