net/failsafe: use SPDX tags in 6WIND copyrighted files
[dpdk.git] / drivers / net / failsafe / failsafe_ops.c
index 53a242e..e7bb801 100644 (file)
@@ -1,42 +1,15 @@
-/*-
- *   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 <stdbool.h>
 #include <stdint.h>
+#include <unistd.h>
 
 #include <rte_debug.h>
 #include <rte_atomic.h>
-#include <rte_ethdev.h>
+#include <rte_ethdev_driver.h>
 #include <rte_malloc.h>
 #include <rte_flow.h>
 #include <rte_cycles.h>
@@ -72,11 +45,38 @@ static struct rte_eth_dev_info default_infos = {
         */
        .rx_offload_capa =
                DEV_RX_OFFLOAD_VLAN_STRIP |
+               DEV_RX_OFFLOAD_IPV4_CKSUM |
+               DEV_RX_OFFLOAD_UDP_CKSUM |
+               DEV_RX_OFFLOAD_TCP_CKSUM |
+               DEV_RX_OFFLOAD_TCP_LRO |
                DEV_RX_OFFLOAD_QINQ_STRIP |
+               DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM |
+               DEV_RX_OFFLOAD_MACSEC_STRIP |
+               DEV_RX_OFFLOAD_HEADER_SPLIT |
+               DEV_RX_OFFLOAD_VLAN_FILTER |
+               DEV_RX_OFFLOAD_VLAN_EXTEND |
+               DEV_RX_OFFLOAD_JUMBO_FRAME |
+               DEV_RX_OFFLOAD_CRC_STRIP |
+               DEV_RX_OFFLOAD_SCATTER |
+               DEV_RX_OFFLOAD_TIMESTAMP |
+               DEV_RX_OFFLOAD_SECURITY,
+       .rx_queue_offload_capa =
+               DEV_RX_OFFLOAD_VLAN_STRIP |
                DEV_RX_OFFLOAD_IPV4_CKSUM |
                DEV_RX_OFFLOAD_UDP_CKSUM |
                DEV_RX_OFFLOAD_TCP_CKSUM |
-               DEV_RX_OFFLOAD_TCP_LRO,
+               DEV_RX_OFFLOAD_TCP_LRO |
+               DEV_RX_OFFLOAD_QINQ_STRIP |
+               DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM |
+               DEV_RX_OFFLOAD_MACSEC_STRIP |
+               DEV_RX_OFFLOAD_HEADER_SPLIT |
+               DEV_RX_OFFLOAD_VLAN_FILTER |
+               DEV_RX_OFFLOAD_VLAN_EXTEND |
+               DEV_RX_OFFLOAD_JUMBO_FRAME |
+               DEV_RX_OFFLOAD_CRC_STRIP |
+               DEV_RX_OFFLOAD_SCATTER |
+               DEV_RX_OFFLOAD_TIMESTAMP |
+               DEV_RX_OFFLOAD_SECURITY,
        .tx_offload_capa = 0x0,
        .flow_type_rss_offloads = 0x0,
 };
@@ -133,6 +133,8 @@ fs_dev_configure(struct rte_eth_dev *dev)
                                        dev->data->nb_tx_queues,
                                        &dev->data->dev_conf);
                if (ret) {
+                       if (!fs_err(sdev, ret))
+                               continue;
                        ERROR("Could not configure sub_device %d", i);
                        return ret;
                }
@@ -170,13 +172,26 @@ fs_dev_start(struct rte_eth_dev *dev)
        uint8_t i;
        int ret;
 
+       ret = failsafe_rx_intr_install(dev);
+       if (ret)
+               return ret;
        FOREACH_SUBDEV(sdev, i, dev) {
                if (sdev->state != DEV_ACTIVE)
                        continue;
                DEBUG("Starting sub_device %d", i);
                ret = rte_eth_dev_start(PORT_ID(sdev));
-               if (ret)
+               if (ret) {
+                       if (!fs_err(sdev, ret))
+                               continue;
                        return ret;
+               }
+               ret = failsafe_rx_intr_install_subdevice(sdev);
+               if (ret) {
+                       if (!fs_err(sdev, ret))
+                               continue;
+                       rte_eth_dev_stop(PORT_ID(sdev));
+                       return ret;
+               }
                sdev->state = DEV_STARTED;
        }
        if (PRIV(dev)->state < DEV_STARTED)
@@ -194,8 +209,10 @@ fs_dev_stop(struct rte_eth_dev *dev)
        PRIV(dev)->state = DEV_STARTED - 1;
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_STARTED) {
                rte_eth_dev_stop(PORT_ID(sdev));
+               failsafe_rx_intr_uninstall_subdevice(sdev);
                sdev->state = DEV_STARTED - 1;
        }
+       failsafe_rx_intr_uninstall(dev);
 }
 
 static int
@@ -208,7 +225,7 @@ fs_dev_set_link_up(struct rte_eth_dev *dev)
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
                DEBUG("Calling rte_eth_dev_set_link_up on sub_device %d", i);
                ret = rte_eth_dev_set_link_up(PORT_ID(sdev));
-               if (ret) {
+               if ((ret = fs_err(sdev, ret))) {
                        ERROR("Operation rte_eth_dev_set_link_up failed for sub_device %d"
                              " with error %d", i, ret);
                        return ret;
@@ -227,7 +244,7 @@ fs_dev_set_link_down(struct rte_eth_dev *dev)
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
                DEBUG("Calling rte_eth_dev_set_link_down on sub_device %d", i);
                ret = rte_eth_dev_set_link_down(PORT_ID(sdev));
-               if (ret) {
+               if ((ret = fs_err(sdev, ret))) {
                        ERROR("Operation rte_eth_dev_set_link_down failed for sub_device %d"
                              " with error %d", i, ret);
                        return ret;
@@ -255,6 +272,25 @@ fs_dev_close(struct rte_eth_dev *dev)
        fs_dev_free_queues(dev);
 }
 
+static bool
+fs_rxq_offloads_valid(struct rte_eth_dev *dev, uint64_t offloads)
+{
+       uint64_t port_offloads;
+       uint64_t queue_supp_offloads;
+       uint64_t port_supp_offloads;
+
+       port_offloads = dev->data->dev_conf.rxmode.offloads;
+       queue_supp_offloads = PRIV(dev)->infos.rx_queue_offload_capa;
+       port_supp_offloads = PRIV(dev)->infos.rx_offload_capa;
+       if ((offloads & (queue_supp_offloads | port_supp_offloads)) !=
+            offloads)
+               return false;
+       /* Verify we have no conflict with port offloads */
+       if ((port_offloads ^ offloads) & port_supp_offloads)
+               return false;
+       return true;
+}
+
 static void
 fs_rx_queue_release(void *queue)
 {
@@ -266,6 +302,8 @@ fs_rx_queue_release(void *queue)
        if (queue == NULL)
                return;
        rxq = queue;
+       if (rxq->event_fd > 0)
+               close(rxq->event_fd);
        dev = rxq->priv->dev;
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE)
                SUBOPS(sdev, rx_queue_release)
@@ -282,6 +320,16 @@ fs_rx_queue_setup(struct rte_eth_dev *dev,
                const struct rte_eth_rxconf *rx_conf,
                struct rte_mempool *mb_pool)
 {
+       /*
+        * FIXME: Add a proper interface in rte_eal_interrupts for
+        * allocating eventfd as an interrupt vector.
+        * For the time being, fake as if we are using MSIX interrupts,
+        * this will cause rte_intr_efd_enable to allocate an eventfd for us.
+        */
+       struct rte_intr_handle intr_handle = {
+               .type = RTE_INTR_HANDLE_VFIO_MSIX,
+               .efds = { -1, },
+       };
        struct sub_device *sdev;
        struct rxq *rxq;
        uint8_t i;
@@ -292,6 +340,18 @@ fs_rx_queue_setup(struct rte_eth_dev *dev,
                fs_rx_queue_release(rxq);
                dev->data->rx_queues[rx_queue_id] = NULL;
        }
+       /* Verify application offloads are valid for our port and queue. */
+       if (fs_rxq_offloads_valid(dev, rx_conf->offloads) == false) {
+               rte_errno = ENOTSUP;
+               ERROR("Rx queue offloads 0x%" PRIx64
+                     " don't match port offloads 0x%" PRIx64
+                     " or supported offloads 0x%" PRIx64,
+                     rx_conf->offloads,
+                     dev->data->dev_conf.rxmode.offloads,
+                     PRIV(dev)->infos.rx_offload_capa |
+                     PRIV(dev)->infos.rx_queue_offload_capa);
+               return -rte_errno;
+       }
        rxq = rte_zmalloc(NULL,
                          sizeof(*rxq) +
                          sizeof(rte_atomic64_t) * PRIV(dev)->subs_tail,
@@ -307,13 +367,17 @@ fs_rx_queue_setup(struct rte_eth_dev *dev,
        rxq->info.nb_desc = nb_rx_desc;
        rxq->priv = PRIV(dev);
        rxq->sdev = PRIV(dev)->subs;
+       ret = rte_intr_efd_enable(&intr_handle, 1);
+       if (ret < 0)
+               return ret;
+       rxq->event_fd = intr_handle.efds[0];
        dev->data->rx_queues[rx_queue_id] = rxq;
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
                ret = rte_eth_rx_queue_setup(PORT_ID(sdev),
                                rx_queue_id,
                                nb_rx_desc, socket_id,
                                rx_conf, mb_pool);
-               if (ret) {
+               if ((ret = fs_err(sdev, ret))) {
                        ERROR("RX queue setup failed for sub_device %d", i);
                        goto free_rxq;
                }
@@ -324,6 +388,76 @@ free_rxq:
        return ret;
 }
 
+static int
+fs_rx_intr_enable(struct rte_eth_dev *dev, uint16_t idx)
+{
+       struct rxq *rxq;
+       struct sub_device *sdev;
+       uint8_t i;
+       int ret;
+       int rc = 0;
+
+       if (idx >= dev->data->nb_rx_queues) {
+               rte_errno = EINVAL;
+               return -rte_errno;
+       }
+       rxq = dev->data->rx_queues[idx];
+       if (rxq == NULL || rxq->event_fd <= 0) {
+               rte_errno = EINVAL;
+               return -rte_errno;
+       }
+       /* Fail if proxy service is nor running. */
+       if (PRIV(dev)->rxp.sstate != SS_RUNNING) {
+               ERROR("failsafe interrupt services are not running");
+               rte_errno = EAGAIN;
+               return -rte_errno;
+       }
+       rxq->enable_events = 1;
+       FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
+               ret = rte_eth_dev_rx_intr_enable(PORT_ID(sdev), idx);
+               ret = fs_err(sdev, ret);
+               if (ret)
+                       rc = ret;
+       }
+       if (rc)
+               rte_errno = -rc;
+       return rc;
+}
+
+static int
+fs_rx_intr_disable(struct rte_eth_dev *dev, uint16_t idx)
+{
+       struct rxq *rxq;
+       struct sub_device *sdev;
+       uint64_t u64;
+       uint8_t i;
+       int rc = 0;
+       int ret;
+
+       if (idx >= dev->data->nb_rx_queues) {
+               rte_errno = EINVAL;
+               return -rte_errno;
+       }
+       rxq = dev->data->rx_queues[idx];
+       if (rxq == NULL || rxq->event_fd <= 0) {
+               rte_errno = EINVAL;
+               return -rte_errno;
+       }
+       rxq->enable_events = 0;
+       FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
+               ret = rte_eth_dev_rx_intr_disable(PORT_ID(sdev), idx);
+               ret = fs_err(sdev, ret);
+               if (ret)
+                       rc = ret;
+       }
+       /* Clear pending events */
+       while (read(rxq->event_fd, &u64, sizeof(uint64_t)) >  0)
+               ;
+       if (rc)
+               rte_errno = -rc;
+       return rc;
+}
+
 static bool
 fs_txq_offloads_valid(struct rte_eth_dev *dev, uint64_t offloads)
 {
@@ -415,7 +549,7 @@ fs_tx_queue_setup(struct rte_eth_dev *dev,
                                tx_queue_id,
                                nb_tx_desc, socket_id,
                                tx_conf);
-               if (ret) {
+               if ((ret = fs_err(sdev, ret))) {
                        ERROR("TX queue setup failed for sub_device %d", i);
                        goto free_txq;
                }
@@ -494,7 +628,8 @@ fs_link_update(struct rte_eth_dev *dev,
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
                DEBUG("Calling link_update on sub_device %d", i);
                ret = (SUBOPS(sdev, link_update))(ETH(sdev), wait_to_complete);
-               if (ret && ret != -1) {
+               if (ret && ret != -1 && sdev->remove == 0 &&
+                   rte_eth_dev_is_removed(PORT_ID(sdev)) == 0) {
                        ERROR("Link update failed for sub_device %d with error %d",
                              i, ret);
                        return ret;
@@ -518,6 +653,7 @@ static int
 fs_stats_get(struct rte_eth_dev *dev,
             struct rte_eth_stats *stats)
 {
+       struct rte_eth_stats backup;
        struct sub_device *sdev;
        uint8_t i;
        int ret;
@@ -527,14 +663,20 @@ fs_stats_get(struct rte_eth_dev *dev,
                struct rte_eth_stats *snapshot = &sdev->stats_snapshot.stats;
                uint64_t *timestamp = &sdev->stats_snapshot.timestamp;
 
+               rte_memcpy(&backup, snapshot, sizeof(backup));
                ret = rte_eth_stats_get(PORT_ID(sdev), snapshot);
                if (ret) {
+                       if (!fs_err(sdev, ret)) {
+                               rte_memcpy(snapshot, &backup, sizeof(backup));
+                               goto inc;
+                       }
                        ERROR("Operation rte_eth_stats_get failed for sub_device %d with error %d",
                                  i, ret);
                        *timestamp = 0;
                        return ret;
                }
                *timestamp = rte_rdtsc();
+inc:
                failsafe_stats_increment(stats, snapshot);
        }
        return 0;
@@ -595,17 +737,22 @@ fs_dev_infos_get(struct rte_eth_dev *dev,
                rte_memcpy(&PRIV(dev)->infos, &default_infos,
                           sizeof(default_infos));
        } else {
-               uint32_t rx_offload_capa;
+               uint64_t rx_offload_capa;
+               uint64_t rxq_offload_capa;
 
                rx_offload_capa = default_infos.rx_offload_capa;
+               rxq_offload_capa = default_infos.rx_queue_offload_capa;
                FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_PROBED) {
                        rte_eth_dev_info_get(PORT_ID(sdev),
                                        &PRIV(dev)->infos);
                        rx_offload_capa &= PRIV(dev)->infos.rx_offload_capa;
+                       rxq_offload_capa &=
+                                       PRIV(dev)->infos.rx_queue_offload_capa;
                }
                sdev = TX_SUBDEV(dev);
                rte_eth_dev_info_get(PORT_ID(sdev), &PRIV(dev)->infos);
                PRIV(dev)->infos.rx_offload_capa = rx_offload_capa;
+               PRIV(dev)->infos.rx_queue_offload_capa = rxq_offload_capa;
                PRIV(dev)->infos.tx_offload_capa &=
                                        default_infos.tx_offload_capa;
                PRIV(dev)->infos.tx_queue_offload_capa &=
@@ -649,7 +796,7 @@ fs_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
                DEBUG("Calling rte_eth_dev_set_mtu on sub_device %d", i);
                ret = rte_eth_dev_set_mtu(PORT_ID(sdev), mtu);
-               if (ret) {
+               if ((ret = fs_err(sdev, ret))) {
                        ERROR("Operation rte_eth_dev_set_mtu failed for sub_device %d with error %d",
                              i, ret);
                        return ret;
@@ -668,7 +815,7 @@ fs_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
                DEBUG("Calling rte_eth_dev_vlan_filter on sub_device %d", i);
                ret = rte_eth_dev_vlan_filter(PORT_ID(sdev), vlan_id, on);
-               if (ret) {
+               if ((ret = fs_err(sdev, ret))) {
                        ERROR("Operation rte_eth_dev_vlan_filter failed for sub_device %d"
                              " with error %d", i, ret);
                        return ret;
@@ -702,7 +849,7 @@ fs_flow_ctrl_set(struct rte_eth_dev *dev,
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
                DEBUG("Calling rte_eth_dev_flow_ctrl_set on sub_device %d", i);
                ret = rte_eth_dev_flow_ctrl_set(PORT_ID(sdev), fc_conf);
-               if (ret) {
+               if ((ret = fs_err(sdev, ret))) {
                        ERROR("Operation rte_eth_dev_flow_ctrl_set failed for sub_device %d"
                              " with error %d", i, ret);
                        return ret;
@@ -739,7 +886,7 @@ fs_mac_addr_add(struct rte_eth_dev *dev,
        RTE_ASSERT(index < FAILSAFE_MAX_ETHADDR);
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
                ret = rte_eth_dev_mac_addr_add(PORT_ID(sdev), mac_addr, vmdq);
-               if (ret) {
+               if ((ret = fs_err(sdev, ret))) {
                        ERROR("Operation rte_eth_dev_mac_addr_add failed for sub_device %"
                              PRIu8 " with error %d", i, ret);
                        return ret;
@@ -781,7 +928,7 @@ fs_filter_ctrl(struct rte_eth_dev *dev,
        FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
                DEBUG("Calling rte_eth_dev_filter_ctrl on sub_device %d", i);
                ret = rte_eth_dev_filter_ctrl(PORT_ID(sdev), type, op, arg);
-               if (ret) {
+               if ((ret = fs_err(sdev, ret))) {
                        ERROR("Operation rte_eth_dev_filter_ctrl failed for sub_device %d"
                              " with error %d", i, ret);
                        return ret;
@@ -812,6 +959,8 @@ const struct eth_dev_ops failsafe_ops = {
        .tx_queue_setup = fs_tx_queue_setup,
        .rx_queue_release = fs_rx_queue_release,
        .tx_queue_release = fs_tx_queue_release,
+       .rx_queue_intr_enable = fs_rx_intr_enable,
+       .rx_queue_intr_disable = fs_rx_intr_disable,
        .flow_ctrl_get = fs_flow_ctrl_get,
        .flow_ctrl_set = fs_flow_ctrl_set,
        .mac_addr_remove = fs_mac_addr_remove,