Added NE2000 network support.

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

src/slirp/libslirp.h

@@ -0,0 +1,41 @@
+#ifndef _LIBSLIRP_H
+#define _LIBSLIRP_H
+
+#ifdef _WIN32
+#include <winsock2.h>
+int inet_aton(const char *cp, struct in_addr *ia);
+#else
+#include <sys/select.h>
+#include <arpa/inet.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int slirp_init(void);
+
+int slirp_select_fill(int *pnfds, 
+					  fd_set *readfds, fd_set *writefds, fd_set *xfds);
+
+void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds);
+
+void slirp_input(const uint8 *pkt, int pkt_len);
+
+/* you must provide the following functions: */
+int slirp_can_output(void);
+void slirp_output(const uint8 *pkt, int pkt_len);
+
+int slirp_redir(int is_udp, int host_port, 
+                struct in_addr guest_addr, int guest_port);
+int slirp_add_exec(int do_pty, const char *args, int addr_low_byte, 
+                   int guest_port);
+
+extern const char *tftp_prefix;
+extern char slirp_hostname[33];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif