dpdk: refactor setup, start, stop code

Change-Id: I0fec86914ec027383ff511b7092beac2363f55f7
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 156 insertions, 0 deletions

diff --git a/src/plugins/dpdk/device/common.c b/src/plugins/dpdk/device/common.c
new file mode 100644
index 00000000..79c5888d
--- /dev/null
+++ b/src/plugins/dpdk/device/common.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <vnet/vnet.h>
+#include <vppinfra/vec.h>
+#include <vppinfra/format.h>
+#include <vlib/unix/cj.h>
+#include <assert.h>
+
+#include <vnet/ethernet/ethernet.h>
+#include <dpdk/device/dpdk.h>
+
+#include <dpdk/device/dpdk_priv.h>
+#include <vppinfra/error.h>
+
+clib_error_t *
+dpdk_error_return (clib_error_t * error, char *str, dpdk_device_t * xd,
+		   int rv)
+{
+  return clib_error_return (error, "%s[%d]: %s(%d)", str, xd->device_index,
+			    rte_strerror (rv), rv);
+}
+
+clib_error_t *
+dpdk_device_setup (dpdk_device_t * xd)
+{
+  dpdk_main_t *dm = &dpdk_main;
+  clib_error_t *err = 0;
+  int rv;
+  int j;
+
+  ASSERT (vlib_get_thread_index () == 0);
+
+  if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
+    {
+      vnet_hw_interface_set_flags (dm->vnet_main, xd->hw_if_index, 0);
+      dpdk_device_stop (xd);
+    }
+
+  rv = rte_eth_dev_configure (xd->device_index, xd->rx_q_used,
+			      xd->tx_q_used, &xd->port_conf);
+
+  if (rv < 0)
+    return dpdk_error_return (err, "rte_eth_dev_configure", xd, rv);
+
+  /* Set up one TX-queue per worker thread */
+  for (j = 0; j < xd->tx_q_used; j++)
+    {
+      rv = rte_eth_tx_queue_setup (xd->device_index, j, xd->nb_tx_desc,
+				   xd->cpu_socket, &xd->tx_conf);
+
+      /* retry with any other CPU socket */
+      if (rv < 0)
+	rv = rte_eth_tx_queue_setup (xd->device_index, j, xd->nb_tx_desc,
+				     SOCKET_ID_ANY, &xd->tx_conf);
+      if (rv < 0)
+	err = dpdk_error_return (err, "rte_eth_tx_queue_setup", xd, rv);
+    }
+
+  for (j = 0; j < xd->rx_q_used; j++)
+    {
+      uword tidx = vnet_get_device_input_thread_index (dm->vnet_main,
+						       xd->hw_if_index, j);
+      unsigned lcore = vlib_worker_threads[tidx].lcore_id;
+      u16 socket_id = rte_lcore_to_socket_id (lcore);
+
+      rv = rte_eth_rx_queue_setup (xd->device_index, j, xd->nb_rx_desc,
+				   xd->cpu_socket, 0,
+				   dm->pktmbuf_pools[socket_id]);
+
+      /* retry with any other CPU socket */
+      if (rv < 0)
+	rv = rte_eth_rx_queue_setup (xd->device_index, j, xd->nb_rx_desc,
+				     SOCKET_ID_ANY, 0,
+				     dm->pktmbuf_pools[socket_id]);
+
+      if (rv < 0)
+	err = dpdk_error_return (err, "rte_eth_rx_queue_setup", xd, rv);
+    }
+
+  if (err)
+    return err;
+
+  if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
+    err = dpdk_device_start (xd);
+
+  return err;
+}
+
+clib_error_t *
+dpdk_device_start (dpdk_device_t * xd)
+{
+  int rv;
+  clib_error_t *err = 0;
+
+  rv = rte_eth_dev_start (xd->device_index);
+
+  if (rv)
+    return dpdk_error_return (err, "rte_eth_dev_start", xd, rv);
+
+  if (xd->default_mac_address)
+    rv =
+      rte_eth_dev_default_mac_addr_set (xd->device_index,
+					(struct ether_addr *)
+					xd->default_mac_address);
+
+  if (rv)
+    err = dpdk_error_return (err, "rte_eth_dev_default_mac_addr_set", xd, rv);
+
+  if (xd->flags & DPDK_DEVICE_FLAG_PROMISC)
+    rte_eth_promiscuous_enable (xd->device_index);
+  else
+    rte_eth_promiscuous_disable (xd->device_index);
+
+  rte_eth_allmulticast_enable (xd->device_index);
+
+  if (xd->pmd == VNET_DPDK_PMD_BOND)
+    {
+      u8 slink[16];
+      int nlink = rte_eth_bond_slaves_get (xd->device_index, slink, 16);
+      while (nlink >= 1)
+	{
+	  u8 dpdk_port = slink[--nlink];
+	  rte_eth_allmulticast_enable (dpdk_port);
+	}
+    }
+
+  return err;
+}
+
+clib_error_t *
+dpdk_device_stop (dpdk_device_t * xd)
+{
+  rte_eth_dev_stop (xd->device_index);
+
+  return 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */