net/failsafe: use SPDX tags in 6WIND copyrighted files
[dpdk.git] / drivers / net / failsafe / failsafe_ether.c
index d205f61..4c6e938 100644 (file)
@@ -1,40 +1,13 @@
-/*-
- *   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"
 
@@ -73,6 +46,28 @@ fs_flow_complain(struct rte_flow_error *error)
        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)
@@ -181,6 +176,7 @@ fs_eth_dev_conf_apply(struct rte_eth_dev *dev,
 
                        ether_format_addr(ea_fmt, ETHER_ADDR_FMT_SIZE, ea);
                        ERROR("Adding MAC address %s failed", ea_fmt);
+                       return ret;
                }
        }
        /* VLAN filter */
@@ -259,6 +255,7 @@ fs_dev_remove(struct sub_device *sdev)
                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 */
@@ -273,7 +270,7 @@ fs_dev_remove(struct sub_device *sdev)
                        ERROR("Bus detach failed for sub_device %u",
                              SUB_ID(sdev));
                } else {
-                       ETH(sdev)->state = RTE_ETH_DEV_UNUSED;
+                       rte_eth_dev_release_port(ETH(sdev));
                }
                sdev->state = DEV_PARSED;
                /* fallthrough */
@@ -286,6 +283,28 @@ fs_dev_remove(struct sub_device *sdev)
        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)
 {
@@ -307,8 +326,10 @@ failsafe_dev_remove(struct rte_eth_dev *dev)
        uint8_t i;
 
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE)
-               if (sdev->remove && fs_rxtx_clean(sdev))
+               if (sdev->remove && fs_rxtx_clean(sdev)) {
+                       fs_dev_stats_save(sdev);
                        fs_dev_remove(sdev);
+               }
 }
 
 int
@@ -334,9 +355,17 @@ failsafe_eth_dev_state_sync(struct rte_eth_dev *dev)
        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)
                goto err_remove;
@@ -369,8 +398,31 @@ err_remove:
        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(uint8_t port_id __rte_unused,
+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)
 {
@@ -389,7 +441,7 @@ failsafe_eth_rmv_event_callback(uint8_t port_id __rte_unused,
 }
 
 int
-failsafe_eth_lsc_event_callback(uint8_t port_id __rte_unused,
+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)
 {
@@ -401,7 +453,7 @@ failsafe_eth_lsc_event_callback(uint8_t port_id __rte_unused,
        if (ret)
                return _rte_eth_dev_callback_process(dev,
                                                     RTE_ETH_EVENT_INTR_LSC,
-                                                    NULL, NULL);
+                                                    NULL);
        else
                return 0;
 }