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, 368 insertions, 0 deletions

diff --git a/kernel/drivers/net/ethernet/cisco/enic/enic_pp.c b/kernel/drivers/net/ethernet/cisco/enic/enic_pp.c
new file mode 100644
index 000000000..e6a83198c
--- /dev/null
+++ b/kernel/drivers/net/ethernet/cisco/enic/enic_pp.c
@@ -0,0 +1,368 @@
+/*
+ * Copyright 2011 Cisco Systems, Inc.  All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/ip.h>
+
+#include "vnic_vic.h"
+#include "enic_res.h"
+#include "enic.h"
+#include "enic_dev.h"
+#include "enic_pp.h"
+
+/*
+ * Checks validity of vf index that came in
+ * port profile request
+ */
+int enic_is_valid_pp_vf(struct enic *enic, int vf, int *err)
+{
+	if (vf != PORT_SELF_VF) {
+#ifdef CONFIG_PCI_IOV
+		if (enic_sriov_enabled(enic)) {
+			if (vf < 0 || vf >= enic->num_vfs) {
+				*err = -EINVAL;
+				goto err_out;
+			}
+		} else {
+			*err = -EOPNOTSUPP;
+			goto err_out;
+		}
+#else
+		*err = -EOPNOTSUPP;
+		goto err_out;
+#endif
+	}
+
+	if (vf == PORT_SELF_VF && !enic_is_dynamic(enic)) {
+		*err = -EOPNOTSUPP;
+		goto err_out;
+	}
+
+	*err = 0;
+	return 1;
+
+err_out:
+	return 0;
+}
+
+static int enic_set_port_profile(struct enic *enic, int vf)
+{
+	struct net_device *netdev = enic->netdev;
+	struct enic_port_profile *pp;
+	struct vic_provinfo *vp;
+	const u8 oui[3] = VIC_PROVINFO_CISCO_OUI;
+	const __be16 os_type = htons(VIC_GENERIC_PROV_OS_TYPE_LINUX);
+	char uuid_str[38];
+	char client_mac_str[18];
+	u8 *client_mac;
+	int err;
+
+	ENIC_PP_BY_INDEX(enic, vf, pp, &err);
+	if (err)
+		return err;
+
+	if (!(pp->set & ENIC_SET_NAME) || !strlen(pp->name))
+		return -EINVAL;
+
+	vp = vic_provinfo_alloc(GFP_KERNEL, oui,
+		VIC_PROVINFO_GENERIC_TYPE);
+	if (!vp)
+		return -ENOMEM;
+
+	VIC_PROVINFO_ADD_TLV(vp,
+		VIC_GENERIC_PROV_TLV_PORT_PROFILE_NAME_STR,
+		strlen(pp->name) + 1, pp->name);
+
+	if (!is_zero_ether_addr(pp->mac_addr)) {
+		client_mac = pp->mac_addr;
+	} else if (vf == PORT_SELF_VF) {
+		client_mac = netdev->dev_addr;
+	} else {
+		netdev_err(netdev, "Cannot find pp mac address "
+			"for VF %d\n", vf);
+		err = -EINVAL;
+		goto add_tlv_failure;
+	}
+
+	VIC_PROVINFO_ADD_TLV(vp,
+		VIC_GENERIC_PROV_TLV_CLIENT_MAC_ADDR,
+		ETH_ALEN, client_mac);
+
+	snprintf(client_mac_str, sizeof(client_mac_str), "%pM", client_mac);
+	VIC_PROVINFO_ADD_TLV(vp,
+		VIC_GENERIC_PROV_TLV_CLUSTER_PORT_UUID_STR,
+		sizeof(client_mac_str), client_mac_str);
+
+	if (pp->set & ENIC_SET_INSTANCE) {
+		sprintf(uuid_str, "%pUB", pp->instance_uuid);
+		VIC_PROVINFO_ADD_TLV(vp,
+			VIC_GENERIC_PROV_TLV_CLIENT_UUID_STR,
+			sizeof(uuid_str), uuid_str);
+	}
+
+	if (pp->set & ENIC_SET_HOST) {
+		sprintf(uuid_str, "%pUB", pp->host_uuid);
+		VIC_PROVINFO_ADD_TLV(vp,
+			VIC_GENERIC_PROV_TLV_HOST_UUID_STR,
+			sizeof(uuid_str), uuid_str);
+	}
+
+	VIC_PROVINFO_ADD_TLV(vp,
+		VIC_GENERIC_PROV_TLV_OS_TYPE,
+		sizeof(os_type), &os_type);
+
+	ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_init_prov2, (u8 *)vp,
+		vic_provinfo_size(vp));
+	err = enic_dev_status_to_errno(err);
+
+add_tlv_failure:
+	vic_provinfo_free(vp);
+
+	return err;
+}
+
+static int enic_unset_port_profile(struct enic *enic, int vf)
+{
+	int err;
+
+	ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_deinit);
+	if (err)
+		return enic_dev_status_to_errno(err);
+
+	if (vf == PORT_SELF_VF)
+		enic_reset_addr_lists(enic);
+
+	return 0;
+}
+
+static int enic_are_pp_different(struct enic_port_profile *pp1,
+		struct enic_port_profile *pp2)
+{
+	return strcmp(pp1->name, pp2->name) | !!memcmp(pp1->instance_uuid,
+		pp2->instance_uuid, PORT_UUID_MAX) |
+		!!memcmp(pp1->host_uuid, pp2->host_uuid, PORT_UUID_MAX) |
+		!ether_addr_equal(pp1->mac_addr, pp2->mac_addr);
+}
+
+static int enic_pp_preassociate(struct enic *enic, int vf,
+	struct enic_port_profile *prev_pp, int *restore_pp);
+static int enic_pp_disassociate(struct enic *enic, int vf,
+	struct enic_port_profile *prev_pp, int *restore_pp);
+static int enic_pp_preassociate_rr(struct enic *enic, int vf,
+	struct enic_port_profile *prev_pp, int *restore_pp);
+static int enic_pp_associate(struct enic *enic, int vf,
+	struct enic_port_profile *prev_pp, int *restore_pp);
+
+static int (*enic_pp_handlers[])(struct enic *enic, int vf,
+		struct enic_port_profile *prev_state,
+		int *restore_pp) = {
+	[PORT_REQUEST_PREASSOCIATE]	= enic_pp_preassociate,
+	[PORT_REQUEST_PREASSOCIATE_RR]	= enic_pp_preassociate_rr,
+	[PORT_REQUEST_ASSOCIATE]	= enic_pp_associate,
+	[PORT_REQUEST_DISASSOCIATE]	= enic_pp_disassociate,
+};
+
+static const int enic_pp_handlers_count =
+			ARRAY_SIZE(enic_pp_handlers);
+
+static int enic_pp_preassociate(struct enic *enic, int vf,
+	struct enic_port_profile *prev_pp, int *restore_pp)
+{
+	return -EOPNOTSUPP;
+}
+
+static int enic_pp_disassociate(struct enic *enic, int vf,
+	struct enic_port_profile *prev_pp, int *restore_pp)
+{
+	struct net_device *netdev = enic->netdev;
+	struct enic_port_profile *pp;
+	int err;
+
+	ENIC_PP_BY_INDEX(enic, vf, pp, &err);
+	if (err)
+		return err;
+
+	/* Deregister mac addresses */
+	if (!is_zero_ether_addr(pp->mac_addr))
+		ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_del_addr,
+			pp->mac_addr);
+	else if (vf == PORT_SELF_VF && !is_zero_ether_addr(netdev->dev_addr))
+		ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_del_addr,
+			netdev->dev_addr);
+
+	return enic_unset_port_profile(enic, vf);
+}
+
+static int enic_pp_preassociate_rr(struct enic *enic, int vf,
+	struct enic_port_profile *prev_pp, int *restore_pp)
+{
+	struct enic_port_profile *pp;
+	int err;
+	int active = 0;
+
+	ENIC_PP_BY_INDEX(enic, vf, pp, &err);
+	if (err)
+		return err;
+
+	if (pp->request != PORT_REQUEST_ASSOCIATE) {
+		/* If pre-associate is not part of an associate.
+		We always disassociate first */
+		err = enic_pp_handlers[PORT_REQUEST_DISASSOCIATE](enic, vf,
+			prev_pp, restore_pp);
+		if (err)
+			return err;
+
+		*restore_pp = 0;
+	}
+
+	*restore_pp = 0;
+
+	err = enic_set_port_profile(enic, vf);
+	if (err)
+		return err;
+
+	/* If pre-associate is not part of an associate. */
+	if (pp->request != PORT_REQUEST_ASSOCIATE) {
+		/* Enable device as standby */
+		ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_enable2,
+			active);
+		err = enic_dev_status_to_errno(err);
+	}
+
+	return err;
+}
+
+static int enic_pp_associate(struct enic *enic, int vf,
+	struct enic_port_profile *prev_pp, int *restore_pp)
+{
+	struct net_device *netdev = enic->netdev;
+	struct enic_port_profile *pp;
+	int err;
+	int active = 1;
+
+	ENIC_PP_BY_INDEX(enic, vf, pp, &err);
+	if (err)
+		return err;
+
+	/* Check if a pre-associate was called before */
+	if (prev_pp->request != PORT_REQUEST_PREASSOCIATE_RR ||
+		(prev_pp->request == PORT_REQUEST_PREASSOCIATE_RR &&
+			enic_are_pp_different(prev_pp, pp))) {
+		err = enic_pp_handlers[PORT_REQUEST_DISASSOCIATE](
+			enic, vf, prev_pp, restore_pp);
+		if (err)
+			return err;
+
+		*restore_pp = 0;
+	}
+
+	err = enic_pp_handlers[PORT_REQUEST_PREASSOCIATE_RR](
+			enic, vf, prev_pp, restore_pp);
+	if (err)
+		return err;
+
+	*restore_pp = 0;
+
+	/* Enable device as active */
+	ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_enable2, active);
+	err = enic_dev_status_to_errno(err);
+	if (err)
+		return err;
+
+	/* Register mac address */
+	if (!is_zero_ether_addr(pp->mac_addr))
+		ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_add_addr,
+			pp->mac_addr);
+	else if (vf == PORT_SELF_VF && !is_zero_ether_addr(netdev->dev_addr))
+		ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_add_addr,
+			netdev->dev_addr);
+
+	return 0;
+}
+
+int enic_process_set_pp_request(struct enic *enic, int vf,
+	struct enic_port_profile *prev_pp, int *restore_pp)
+{
+	struct enic_port_profile *pp;
+	int err;
+
+	ENIC_PP_BY_INDEX(enic, vf, pp, &err);
+	if (err)
+		return err;
+
+	if (pp->request >= enic_pp_handlers_count
+		|| !enic_pp_handlers[pp->request])
+		return -EOPNOTSUPP;
+
+	return enic_pp_handlers[pp->request](enic, vf, prev_pp, restore_pp);
+}
+
+int enic_process_get_pp_request(struct enic *enic, int vf,
+	int request, u16 *response)
+{
+	int err, status = ERR_SUCCESS;
+
+	switch (request) {
+
+	case PORT_REQUEST_PREASSOCIATE_RR:
+	case PORT_REQUEST_ASSOCIATE:
+		ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic,
+			vnic_dev_enable2_done, &status);
+		break;
+
+	case PORT_REQUEST_DISASSOCIATE:
+		ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic,
+			vnic_dev_deinit_done, &status);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if (err)
+		status = err;
+
+	switch (status) {
+	case ERR_SUCCESS:
+		*response = PORT_PROFILE_RESPONSE_SUCCESS;
+		break;
+	case ERR_EINVAL:
+		*response = PORT_PROFILE_RESPONSE_INVALID;
+		break;
+	case ERR_EBADSTATE:
+		*response = PORT_PROFILE_RESPONSE_BADSTATE;
+		break;
+	case ERR_ENOMEM:
+		*response = PORT_PROFILE_RESPONSE_INSUFFICIENT_RESOURCES;
+		break;
+	case ERR_EINPROGRESS:
+		*response = PORT_PROFILE_RESPONSE_INPROGRESS;
+		break;
+	default:
+		*response = PORT_PROFILE_RESPONSE_ERROR;
+		break;
+	}
+
+	return 0;
+}