New upstream version 17.08

Change-Id: I288b50990f52646089d6b1f3aaa6ba2f091a51d7
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

1 files changed, 437 insertions, 0 deletions

diff --git a/drivers/net/failsafe/failsafe_ether.c b/drivers/net/failsafe/failsafe_ether.c
new file mode 100644
index 00000000..a3a8cce9
--- /dev/null
+++ b/drivers/net/failsafe/failsafe_ether.c
@@ -0,0 +1,437 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright 2017 6WIND S.A.
+ *   Copyright 2017 Mellanox.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of 6WIND S.A. nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <unistd.h>
+
+#include <rte_flow.h>
+#include <rte_flow_driver.h>
+
+#include "failsafe_private.h"
+
+/** Print a message out of a flow error. */
+static int
+fs_flow_complain(struct rte_flow_error *error)
+{
+	static const char *const errstrlist[] = {
+		[RTE_FLOW_ERROR_TYPE_NONE] = "no error",
+		[RTE_FLOW_ERROR_TYPE_UNSPECIFIED] = "cause unspecified",
+		[RTE_FLOW_ERROR_TYPE_HANDLE] = "flow rule (handle)",
+		[RTE_FLOW_ERROR_TYPE_ATTR_GROUP] = "group field",
+		[RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY] = "priority field",
+		[RTE_FLOW_ERROR_TYPE_ATTR_INGRESS] = "ingress field",
+		[RTE_FLOW_ERROR_TYPE_ATTR_EGRESS] = "egress field",
+		[RTE_FLOW_ERROR_TYPE_ATTR] = "attributes structure",
+		[RTE_FLOW_ERROR_TYPE_ITEM_NUM] = "pattern length",
+		[RTE_FLOW_ERROR_TYPE_ITEM] = "specific pattern item",
+		[RTE_FLOW_ERROR_TYPE_ACTION_NUM] = "number of actions",
+		[RTE_FLOW_ERROR_TYPE_ACTION] = "specific action",
+	};
+	const char *errstr;
+	char buf[32];
+	int err = rte_errno;
+
+	if ((unsigned int)error->type >= RTE_DIM(errstrlist) ||
+			!errstrlist[error->type])
+		errstr = "unknown type";
+	else
+		errstr = errstrlist[error->type];
+	ERROR("Caught error type %d (%s): %s%s\n",
+		error->type, errstr,
+		error->cause ? (snprintf(buf, sizeof(buf), "cause: %p, ",
+				error->cause), buf) : "",
+		error->message ? error->message : "(no stated reason)");
+	return -err;
+}
+
+static int
+eth_dev_flow_isolate_set(struct rte_eth_dev *dev,
+			 struct sub_device *sdev)
+{
+	struct rte_flow_error ferror;
+	int ret;
+
+	if (!PRIV(dev)->flow_isolated) {
+		DEBUG("Flow isolation already disabled");
+	} else {
+		DEBUG("Enabling flow isolation");
+		ret = rte_flow_isolate(PORT_ID(sdev),
+				       PRIV(dev)->flow_isolated,
+				       &ferror);
+		if (ret) {
+			fs_flow_complain(&ferror);
+			return ret;
+		}
+	}
+	return 0;
+}
+
+static int
+fs_eth_dev_conf_apply(struct rte_eth_dev *dev,
+		struct sub_device *sdev)
+{
+	struct rte_eth_dev *edev;
+	struct rte_vlan_filter_conf *vfc1;
+	struct rte_vlan_filter_conf *vfc2;
+	struct rte_flow *flow;
+	struct rte_flow_error ferror;
+	uint32_t i;
+	int ret;
+
+	edev = ETH(sdev);
+	/* RX queue setup */
+	for (i = 0; i < dev->data->nb_rx_queues; i++) {
+		struct rxq *rxq;
+
+		rxq = dev->data->rx_queues[i];
+		ret = rte_eth_rx_queue_setup(PORT_ID(sdev), i,
+				rxq->info.nb_desc, rxq->socket_id,
+				&rxq->info.conf, rxq->info.mp);
+		if (ret) {
+			ERROR("rx_queue_setup failed");
+			return ret;
+		}
+	}
+	/* TX queue setup */
+	for (i = 0; i < dev->data->nb_tx_queues; i++) {
+		struct txq *txq;
+
+		txq = dev->data->tx_queues[i];
+		ret = rte_eth_tx_queue_setup(PORT_ID(sdev), i,
+				txq->info.nb_desc, txq->socket_id,
+				&txq->info.conf);
+		if (ret) {
+			ERROR("tx_queue_setup failed");
+			return ret;
+		}
+	}
+	/* dev_link.link_status */
+	if (dev->data->dev_link.link_status !=
+	    edev->data->dev_link.link_status) {
+		DEBUG("Configuring link_status");
+		if (dev->data->dev_link.link_status)
+			ret = rte_eth_dev_set_link_up(PORT_ID(sdev));
+		else
+			ret = rte_eth_dev_set_link_down(PORT_ID(sdev));
+		if (ret) {
+			ERROR("Failed to apply link_status");
+			return ret;
+		}
+	} else {
+		DEBUG("link_status already set");
+	}
+	/* promiscuous */
+	if (dev->data->promiscuous != edev->data->promiscuous) {
+		DEBUG("Configuring promiscuous");
+		if (dev->data->promiscuous)
+			rte_eth_promiscuous_enable(PORT_ID(sdev));
+		else
+			rte_eth_promiscuous_disable(PORT_ID(sdev));
+	} else {
+		DEBUG("promiscuous already set");
+	}
+	/* all_multicast */
+	if (dev->data->all_multicast != edev->data->all_multicast) {
+		DEBUG("Configuring all_multicast");
+		if (dev->data->all_multicast)
+			rte_eth_allmulticast_enable(PORT_ID(sdev));
+		else
+			rte_eth_allmulticast_disable(PORT_ID(sdev));
+	} else {
+		DEBUG("all_multicast already set");
+	}
+	/* MTU */
+	if (dev->data->mtu != edev->data->mtu) {
+		DEBUG("Configuring MTU");
+		ret = rte_eth_dev_set_mtu(PORT_ID(sdev), dev->data->mtu);
+		if (ret) {
+			ERROR("Failed to apply MTU");
+			return ret;
+		}
+	} else {
+		DEBUG("MTU already set");
+	}
+	/* default MAC */
+	DEBUG("Configuring default MAC address");
+	ret = rte_eth_dev_default_mac_addr_set(PORT_ID(sdev),
+			&dev->data->mac_addrs[0]);
+	if (ret) {
+		ERROR("Setting default MAC address failed");
+		return ret;
+	}
+	/* additional MAC */
+	if (PRIV(dev)->nb_mac_addr > 1)
+		DEBUG("Configure additional MAC address%s",
+			(PRIV(dev)->nb_mac_addr > 2 ? "es" : ""));
+	for (i = 1; i < PRIV(dev)->nb_mac_addr; i++) {
+		struct ether_addr *ea;
+
+		ea = &dev->data->mac_addrs[i];
+		ret = rte_eth_dev_mac_addr_add(PORT_ID(sdev), ea,
+				PRIV(dev)->mac_addr_pool[i]);
+		if (ret) {
+			char ea_fmt[ETHER_ADDR_FMT_SIZE];
+
+			ether_format_addr(ea_fmt, ETHER_ADDR_FMT_SIZE, ea);
+			ERROR("Adding MAC address %s failed", ea_fmt);
+		}
+	}
+	/* VLAN filter */
+	vfc1 = &dev->data->vlan_filter_conf;
+	vfc2 = &edev->data->vlan_filter_conf;
+	if (memcmp(vfc1, vfc2, sizeof(struct rte_vlan_filter_conf))) {
+		uint64_t vbit;
+		uint64_t ids;
+		size_t i;
+		uint16_t vlan_id;
+
+		DEBUG("Configuring VLAN filter");
+		for (i = 0; i < RTE_DIM(vfc1->ids); i++) {
+			if (vfc1->ids[i] == 0)
+				continue;
+			ids = vfc1->ids[i];
+			while (ids) {
+				vlan_id = 64 * i;
+				/* count trailing zeroes */
+				vbit = ~ids & (ids - 1);
+				/* clear least significant bit set */
+				ids ^= (ids ^ (ids - 1)) ^ vbit;
+				for (; vbit; vlan_id++)
+					vbit >>= 1;
+				ret = rte_eth_dev_vlan_filter(
+					PORT_ID(sdev), vlan_id, 1);
+				if (ret) {
+					ERROR("Failed to apply VLAN filter %hu",
+						vlan_id);
+					return ret;
+				}
+			}
+		}
+	} else {
+		DEBUG("VLAN filter already set");
+	}
+	/* rte_flow */
+	if (TAILQ_EMPTY(&PRIV(dev)->flow_list)) {
+		DEBUG("rte_flow already set");
+	} else {
+		DEBUG("Resetting rte_flow configuration");
+		ret = rte_flow_flush(PORT_ID(sdev), &ferror);
+		if (ret) {
+			fs_flow_complain(&ferror);
+			return ret;
+		}
+		i = 0;
+		rte_errno = 0;
+		DEBUG("Configuring rte_flow");
+		TAILQ_FOREACH(flow, &PRIV(dev)->flow_list, next) {
+			DEBUG("Creating flow #%" PRIu32, i++);
+			flow->flows[SUB_ID(sdev)] =
+				rte_flow_create(PORT_ID(sdev),
+						&flow->fd->attr,
+						flow->fd->items,
+						flow->fd->actions,
+						&ferror);
+			ret = rte_errno;
+			if (ret)
+				break;
+		}
+		if (ret) {
+			fs_flow_complain(&ferror);
+			return ret;
+		}
+	}
+	return 0;
+}
+
+static void
+fs_dev_remove(struct sub_device *sdev)
+{
+	int ret;
+
+	if (sdev == NULL)
+		return;
+	switch (sdev->state) {
+	case DEV_STARTED:
+		rte_eth_dev_stop(PORT_ID(sdev));
+		sdev->state = DEV_ACTIVE;
+		/* fallthrough */
+	case DEV_ACTIVE:
+		rte_eth_dev_close(PORT_ID(sdev));
+		sdev->state = DEV_PROBED;
+		/* fallthrough */
+	case DEV_PROBED:
+		ret = rte_eal_hotplug_remove(sdev->bus->name,
+					     sdev->dev->name);
+		if (ret) {
+			ERROR("Bus detach failed for sub_device %u",
+			      SUB_ID(sdev));
+		} else {
+			ETH(sdev)->state = RTE_ETH_DEV_UNUSED;
+		}
+		sdev->state = DEV_PARSED;
+		/* fallthrough */
+	case DEV_PARSED:
+	case DEV_UNDEFINED:
+		sdev->state = DEV_UNDEFINED;
+		/* the end */
+		break;
+	}
+	failsafe_hotplug_alarm_install(sdev->fs_dev);
+}
+
+static inline int
+fs_rxtx_clean(struct sub_device *sdev)
+{
+	uint16_t i;
+
+	for (i = 0; i < ETH(sdev)->data->nb_rx_queues; i++)
+		if (FS_ATOMIC_RX(sdev, i))
+			return 0;
+	for (i = 0; i < ETH(sdev)->data->nb_tx_queues; i++)
+		if (FS_ATOMIC_TX(sdev, i))
+			return 0;
+	return 1;
+}
+
+void
+failsafe_dev_remove(struct rte_eth_dev *dev)
+{
+	struct sub_device *sdev;
+	uint8_t i;
+
+	FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE)
+		if (sdev->remove && fs_rxtx_clean(sdev))
+			fs_dev_remove(sdev);
+}
+
+int
+failsafe_eth_dev_state_sync(struct rte_eth_dev *dev)
+{
+	struct sub_device *sdev;
+	uint32_t inactive;
+	int ret;
+	uint8_t i;
+
+	if (PRIV(dev)->state < DEV_PARSED)
+		return 0;
+
+	ret = failsafe_args_parse_subs(dev);
+	if (ret)
+		goto err_remove;
+
+	if (PRIV(dev)->state < DEV_PROBED)
+		return 0;
+	ret = failsafe_eal_init(dev);
+	if (ret)
+		goto err_remove;
+	if (PRIV(dev)->state < DEV_ACTIVE)
+		return 0;
+	inactive = 0;
+	FOREACH_SUBDEV(sdev, i, dev) {
+		if (sdev->state == DEV_PROBED) {
+			inactive |= UINT32_C(1) << i;
+			ret = eth_dev_flow_isolate_set(dev, sdev);
+			if (ret) {
+				ERROR("Could not apply configuration to sub_device %d",
+				      i);
+				goto err_remove;
+			}
+		}
+	}
+	ret = dev->dev_ops->dev_configure(dev);
+	if (ret)
+		goto err_remove;
+	FOREACH_SUBDEV(sdev, i, dev) {
+		if (inactive & (UINT32_C(1) << i)) {
+			ret = fs_eth_dev_conf_apply(dev, sdev);
+			if (ret) {
+				ERROR("Could not apply configuration to sub_device %d",
+				      i);
+				goto err_remove;
+			}
+		}
+	}
+	/*
+	 * If new devices have been configured, check if
+	 * the link state has changed.
+	 */
+	if (inactive)
+		dev->dev_ops->link_update(dev, 1);
+	if (PRIV(dev)->state < DEV_STARTED)
+		return 0;
+	ret = dev->dev_ops->dev_start(dev);
+	if (ret)
+		goto err_remove;
+	return 0;
+err_remove:
+	FOREACH_SUBDEV(sdev, i, dev)
+		if (sdev->state != PRIV(dev)->state)
+			sdev->remove = 1;
+	return ret;
+}
+
+int
+failsafe_eth_rmv_event_callback(uint8_t port_id __rte_unused,
+				enum rte_eth_event_type event __rte_unused,
+				void *cb_arg, void *out __rte_unused)
+{
+	struct sub_device *sdev = cb_arg;
+
+	/* Switch as soon as possible tx_dev. */
+	fs_switch_dev(sdev->fs_dev, sdev);
+	/* Use safe bursts in any case. */
+	set_burst_fn(sdev->fs_dev, 1);
+	/*
+	 * Async removal, the sub-PMD will try to unregister
+	 * the callback at the source of the current thread context.
+	 */
+	sdev->remove = 1;
+	return 0;
+}
+
+int
+failsafe_eth_lsc_event_callback(uint8_t port_id __rte_unused,
+				enum rte_eth_event_type event __rte_unused,
+				void *cb_arg, void *out __rte_unused)
+{
+	struct rte_eth_dev *dev = cb_arg;
+	int ret;
+
+	ret = dev->dev_ops->link_update(dev, 0);
+	/* We must pass on the LSC event */
+	if (ret)
+		return _rte_eth_dev_callback_process(dev,
+						     RTE_ETH_EVENT_INTR_LSC,
+						     NULL, NULL);
+	else
+		return 0;
+}