-/*-
- * 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2017 6WIND S.A.
+ * Copyright 2017 Mellanox.
*/
#include <unistd.h>
+#include <rte_flow.h>
+#include <rte_flow_driver.h>
+#include <rte_cycles.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;
ether_format_addr(ea_fmt, ETHER_ADDR_FMT_SIZE, ea);
ERROR("Adding MAC address %s failed", ea_fmt);
+ return ret;
}
}
/* VLAN filter */
} 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:
+ failsafe_rx_intr_uninstall_subdevice(sdev);
+ 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 {
+ rte_eth_dev_release_port(ETH(sdev));
+ }
+ 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 void
+fs_dev_stats_save(struct sub_device *sdev)
+{
+ struct rte_eth_stats stats;
+ int err;
+
+ /* Attempt to read current stats. */
+ err = rte_eth_stats_get(PORT_ID(sdev), &stats);
+ if (err) {
+ uint64_t timestamp = sdev->stats_snapshot.timestamp;
+
+ WARN("Could not access latest statistics from sub-device %d.\n",
+ SUB_ID(sdev));
+ if (timestamp != 0)
+ WARN("Using latest snapshot taken before %"PRIu64" seconds.\n",
+ (rte_rdtsc() - timestamp) / rte_get_tsc_hz());
+ }
+ failsafe_stats_increment(&PRIV(sdev->fs_dev)->stats_accumulator,
+ err ? &sdev->stats_snapshot.stats : &stats);
+ memset(&sdev->stats_snapshot, 0, sizeof(sdev->stats_snapshot));
+}
+
+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_stats_save(sdev);
+ fs_dev_remove(sdev);
+ }
+}
+
int
failsafe_eth_dev_state_sync(struct rte_eth_dev *dev)
{
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)
- return ret;
+ goto err_remove;
if (PRIV(dev)->state < DEV_ACTIVE)
return 0;
inactive = 0;
- FOREACH_SUBDEV(sdev, i, dev)
- if (sdev->state == DEV_PROBED)
+ 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)
- return 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);
- /* TODO: disable device */
- return ret;
+ goto err_remove;
}
}
}
return 0;
ret = dev->dev_ops->dev_start(dev);
if (ret)
- return ret;
+ goto err_remove;
return 0;
+err_remove:
+ FOREACH_SUBDEV(sdev, i, dev)
+ if (sdev->state != PRIV(dev)->state)
+ sdev->remove = 1;
+ return ret;
+}
+
+void
+failsafe_stats_increment(struct rte_eth_stats *to, struct rte_eth_stats *from)
+{
+ uint32_t i;
+
+ RTE_ASSERT(to != NULL && from != NULL);
+ to->ipackets += from->ipackets;
+ to->opackets += from->opackets;
+ to->ibytes += from->ibytes;
+ to->obytes += from->obytes;
+ to->imissed += from->imissed;
+ to->ierrors += from->ierrors;
+ to->oerrors += from->oerrors;
+ to->rx_nombuf += from->rx_nombuf;
+ for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS; i++) {
+ to->q_ipackets[i] += from->q_ipackets[i];
+ to->q_opackets[i] += from->q_opackets[i];
+ to->q_ibytes[i] += from->q_ibytes[i];
+ to->q_obytes[i] += from->q_obytes[i];
+ to->q_errors[i] += from->q_errors[i];
+ }
+}
+
+int
+failsafe_eth_rmv_event_callback(uint16_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(uint16_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);
+ else
+ return 0;
}
git.droids-corp.org / dpdk.git / blobdiff