Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/kernel/arch/um/drivers/slirp.h b/kernel/arch/um/drivers/slirp.h
new file mode 100644
index 000000000..89ccf83b7
--- /dev/null
+++ b/kernel/arch/um/drivers/slirp.h
@@ -0,0 +1,33 @@
+#ifndef __UM_SLIRP_H
+#define __UM_SLIRP_H
+
+#include "slip_common.h"
+
+#define SLIRP_MAX_ARGS 100
+/*
+ * XXX this next definition is here because I don't understand why this
+ * initializer doesn't work in slirp_kern.c:
+ *
+ *   argv :  { init->argv[ 0 ... SLIRP_MAX_ARGS-1 ] },
+ *
+ * or why I can't typecast like this:
+ *
+ *   argv :  (char* [SLIRP_MAX_ARGS])(init->argv), 
+ */
+struct arg_list_dummy_wrapper { char *argv[SLIRP_MAX_ARGS]; };
+
+struct slirp_data {
+	void *dev;
+	struct arg_list_dummy_wrapper argw;
+	int pid;
+	int slave;
+	struct slip_proto slip;
+};
+
+extern const struct net_user_info slirp_user_info;
+
+extern int slirp_user_read(int fd, void *buf, int len, struct slirp_data *pri);
+extern int slirp_user_write(int fd, void *buf, int len,
+			    struct slirp_data *pri);
+
+#endif