Imported Upstream version 16.04

[deb_dpdk.git] / drivers / net / mlx5 / mlx5_trigger.c

diff --git a/drivers/net/mlx5/mlx5_trigger.c b/drivers/net/mlx5/mlx5_trigger.c
new file mode 100644 (file)
index 0000000..e9b9a29
--- /dev/null
+++ b/drivers/net/mlx5/mlx5_trigger.c
@@ -0,0 +1,126 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright 2015 6WIND S.A.
+ *   Copyright 2015 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.
+ */
+
+/* DPDK headers don't like -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-pedantic"
+#endif
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_interrupts.h>
+#include <rte_alarm.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-pedantic"
+#endif
+
+#include "mlx5.h"
+#include "mlx5_rxtx.h"
+#include "mlx5_utils.h"
+
+/**
+ * DPDK callback to start the device.
+ *
+ * Simulate device start by attaching all configured flows.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ *
+ * @return
+ *   0 on success, negative errno value on failure.
+ */
+int
+mlx5_dev_start(struct rte_eth_dev *dev)
+{
+       struct priv *priv = dev->data->dev_private;
+       int err;
+
+       if (mlx5_is_secondary())
+               return -E_RTE_SECONDARY;
+
+       priv_lock(priv);
+       if (priv->started) {
+               priv_unlock(priv);
+               return 0;
+       }
+       DEBUG("%p: allocating and configuring hash RX queues", (void *)dev);
+       err = priv_create_hash_rxqs(priv);
+       if (!err)
+               err = priv_rehash_flows(priv);
+       if (!err)
+               priv->started = 1;
+       else {
+               ERROR("%p: an error occurred while configuring hash RX queues:"
+                     " %s",
+                     (void *)priv, strerror(err));
+               /* Rollback. */
+               priv_special_flow_disable_all(priv);
+               priv_mac_addrs_disable(priv);
+               priv_destroy_hash_rxqs(priv);
+       }
+       if (dev->data->dev_conf.fdir_conf.mode != RTE_FDIR_MODE_NONE)
+               priv_fdir_enable(priv);
+       priv_dev_interrupt_handler_install(priv, dev);
+       priv_unlock(priv);
+       return -err;
+}
+
+/**
+ * DPDK callback to stop the device.
+ *
+ * Simulate device stop by detaching all configured flows.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ */
+void
+mlx5_dev_stop(struct rte_eth_dev *dev)
+{
+       struct priv *priv = dev->data->dev_private;
+
+       if (mlx5_is_secondary())
+               return;
+
+       priv_lock(priv);
+       if (!priv->started) {
+               priv_unlock(priv);
+               return;
+       }
+       DEBUG("%p: cleaning up and destroying hash RX queues", (void *)dev);
+       priv_special_flow_disable_all(priv);
+       priv_mac_addrs_disable(priv);
+       priv_destroy_hash_rxqs(priv);
+       priv_fdir_disable(priv);
+       priv_dev_interrupt_handler_uninstall(priv, dev);
+       priv->started = 0;
+       priv_unlock(priv);
+}