rtl8139: Move more TCP definitions to common header

Signed-off-by: NDmitry Fleytman <dmitry.fleytman@ravellosystems.com>
Signed-off-by: NLeonid Bloch <leonid.bloch@ravellosystems.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NJason Wang <jasowang@redhat.com>

hw/net/rtl8139.c

@@ -1867,11 +1867,6 @@ static int rtl8139_transmit_one(RTL8139State *s, int descriptor)
     return 1;
 }
 
-/* structures and macros for task offloading */
-#define TCP_HEADER_DATA_OFFSET(tcp) (((be16_to_cpu(tcp->th_offset_flags) >> 12)&0xf) << 2)
-#define TCP_FLAGS_ONLY(flags) ((flags)&0x3f)
-#define TCP_HEADER_FLAGS(tcp) TCP_FLAGS_ONLY(be16_to_cpu(tcp->th_offset_flags))
-
 #define TCP_HEADER_CLEAR_FLAGS(tcp, off) ((tcp)->th_offset_flags &= cpu_to_be16(~TCP_FLAGS_ONLY(off)))
 
 /* produces ones' complement sum of data */

include/net/eth.h

@@ -67,6 +67,14 @@ typedef struct tcp_header {
     uint16_t th_urp;            /* urgent pointer */
 } tcp_header;
 
+#define TCP_FLAGS_ONLY(flags) ((flags) & 0x3f)
+
+#define TCP_HEADER_FLAGS(tcp) \
+    TCP_FLAGS_ONLY(be16_to_cpu((tcp)->th_offset_flags))
+
+#define TCP_HEADER_DATA_OFFSET(tcp) \
+    (((be16_to_cpu((tcp)->th_offset_flags) >> 12) & 0xf) << 2)
+
 typedef struct udp_header {
     uint16_t uh_sport; /* source port */
     uint16_t uh_dport; /* destination port */