Added NE2000 network support.

NE2000 emulation originally from Bochs, ported by SA1988.
SLiRP originally from QEMU, ported by neozeed.

src/slirp/sbuf.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 1995 Danny Gasparovski.
+ * 
+ * Please read the file COPYRIGHT for the 
+ * terms and conditions of the copyright.
+ */
+
+#ifndef _SBUF_H_
+#define _SBUF_H_
+
+#define sbflush(sb) sbdrop((sb),(sb)->sb_cc)
+#define sbspace(sb) ((sb)->sb_datalen - (sb)->sb_cc)
+
+struct sbuf {
+	u_int	sb_cc;		/* actual chars in buffer */
+	u_int	sb_datalen;	/* Length of data  */
+	char	*sb_wptr;	/* write pointer. points to where the next
+				 * bytes should be written in the sbuf */
+	char	*sb_rptr;	/* read pointer. points to where the next
+				 * byte should be read from the sbuf */
+	char	*sb_data;	/* Actual data */
+};
+
+void sbfree _P((struct sbuf *));
+void sbdrop _P((struct sbuf *, int));
+void sbreserve _P((struct sbuf *, int));
+void sbappend _P((struct SLIRPsocket *, struct SLIRPmbuf *));
+void sbappendsb _P((struct sbuf *, struct SLIRPmbuf *));
+void sbcopy _P((struct sbuf *, int, int, char *));
+
+#endif