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, 152 insertions, 0 deletions

diff --git a/kernel/drivers/scsi/libfc/fc_elsct.c b/kernel/drivers/scsi/libfc/fc_elsct.c
new file mode 100644
index 000000000..c2384d501
--- /dev/null
+++ b/kernel/drivers/scsi/libfc/fc_elsct.c
@@ -0,0 +1,152 @@
+/*
+ * Copyright(c) 2008 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+/*
+ * Provide interface to send ELS/CT FC frames
+ */
+
+#include <linux/export.h>
+#include <asm/unaligned.h>
+#include <scsi/fc/fc_gs.h>
+#include <scsi/fc/fc_ns.h>
+#include <scsi/fc/fc_els.h>
+#include <scsi/libfc.h>
+#include <scsi/fc_encode.h>
+#include "fc_libfc.h"
+
+/**
+ * fc_elsct_send() - Send an ELS or CT frame
+ * @lport:	The local port to send the frame on
+ * @did:	The destination ID for the frame
+ * @fp:		The frame to be sent
+ * @op:		The operational code
+ * @resp:	The callback routine when the response is received
+ * @arg:	The argument to pass to the response callback routine
+ * @timer_msec: The timeout period for the frame (in msecs)
+ */
+struct fc_seq *fc_elsct_send(struct fc_lport *lport, u32 did,
+			     struct fc_frame *fp, unsigned int op,
+			     void (*resp)(struct fc_seq *,
+					  struct fc_frame *,
+					  void *),
+			     void *arg, u32 timer_msec)
+{
+	enum fc_rctl r_ctl;
+	enum fc_fh_type fh_type;
+	int rc;
+
+	/* ELS requests */
+	if ((op >= ELS_LS_RJT) && (op <= ELS_AUTH_ELS))
+		rc = fc_els_fill(lport, did, fp, op, &r_ctl, &fh_type);
+	else {
+		/* CT requests */
+		rc = fc_ct_fill(lport, did, fp, op, &r_ctl, &fh_type, &did);
+	}
+
+	if (rc) {
+		fc_frame_free(fp);
+		return NULL;
+	}
+
+	fc_fill_fc_hdr(fp, r_ctl, did, lport->port_id, fh_type,
+		       FC_FCTL_REQ, 0);
+
+	return lport->tt.exch_seq_send(lport, fp, resp, NULL, arg, timer_msec);
+}
+EXPORT_SYMBOL(fc_elsct_send);
+
+/**
+ * fc_elsct_init() - Initialize the ELS/CT layer
+ * @lport: The local port to initialize the ELS/CT layer for
+ */
+int fc_elsct_init(struct fc_lport *lport)
+{
+	if (!lport->tt.elsct_send)
+		lport->tt.elsct_send = fc_elsct_send;
+
+	return 0;
+}
+EXPORT_SYMBOL(fc_elsct_init);
+
+/**
+ * fc_els_resp_type() - Return a string describing the ELS response
+ * @fp: The frame pointer or possible error code
+ */
+const char *fc_els_resp_type(struct fc_frame *fp)
+{
+	const char *msg;
+	struct fc_frame_header *fh;
+	struct fc_ct_hdr *ct;
+
+	if (IS_ERR(fp)) {
+		switch (-PTR_ERR(fp)) {
+		case FC_NO_ERR:
+			msg = "response no error";
+			break;
+		case FC_EX_TIMEOUT:
+			msg = "response timeout";
+			break;
+		case FC_EX_CLOSED:
+			msg = "response closed";
+			break;
+		default:
+			msg = "response unknown error";
+			break;
+		}
+	} else {
+		fh = fc_frame_header_get(fp);
+		switch (fh->fh_type) {
+		case FC_TYPE_ELS:
+			switch (fc_frame_payload_op(fp)) {
+			case ELS_LS_ACC:
+				msg = "accept";
+				break;
+			case ELS_LS_RJT:
+				msg = "reject";
+				break;
+			default:
+				msg = "response unknown ELS";
+				break;
+			}
+			break;
+		case FC_TYPE_CT:
+			ct = fc_frame_payload_get(fp, sizeof(*ct));
+			if (ct) {
+				switch (ntohs(ct->ct_cmd)) {
+				case FC_FS_ACC:
+					msg = "CT accept";
+					break;
+				case FC_FS_RJT:
+					msg = "CT reject";
+					break;
+				default:
+					msg = "response unknown CT";
+					break;
+				}
+			} else {
+				msg = "short CT response";
+			}
+			break;
+		default:
+			msg = "response not ELS or CT";
+			break;
+		}
+	}
+	return msg;
+}