1 files changed, 442 insertions, 0 deletions

diff --git a/src/plugins/dev_iavf/port.c b/src/plugins/dev_iavf/port.c
new file mode 100644
index 00000000000..c0f363c3115
--- /dev/null
+++ b/src/plugins/dev_iavf/port.c
@@ -0,0 +1,442 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2023 Cisco Systems, Inc.
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/dev/dev.h>
+#include <vnet/dev/pci.h>
+#include <vnet/dev/counters.h>
+#include <dev_iavf/iavf.h>
+#include <dev_iavf/iavf_regs.h>
+#include <dev_iavf/virtchnl.h>
+#include <dev_iavf/virtchnl_funcs.h>
+#include <vnet/ethernet/ethernet.h>
+
+VLIB_REGISTER_LOG_CLASS (iavf_log, static) = {
+  .class_name = "iavf",
+  .subclass_name = "port",
+};
+
+static const u8 default_rss_key[] = {
+  0x44, 0x39, 0x79, 0x6b, 0xb5, 0x4c, 0x50, 0x23, 0xb6, 0x75, 0xea, 0x5b, 0x12,
+  0x4f, 0x9f, 0x30, 0xb8, 0xa2, 0xc0, 0x3d, 0xdf, 0xdc, 0x4d, 0x02, 0xa0, 0x8c,
+  0x9b, 0x33, 0x4a, 0xf6, 0x4a, 0x4c, 0x05, 0xc6, 0xfa, 0x34, 0x39, 0x58, 0xd8,
+  0x55, 0x7d, 0x99, 0x58, 0x3a, 0xe1, 0x38, 0xc9, 0x2e, 0x81, 0x15, 0x03, 0x66,
+};
+
+const static iavf_dyn_ctln dyn_ctln_disabled = {};
+const static iavf_dyn_ctln dyn_ctln_enabled = {
+  .clearpba = 1,
+  .interval = IAVF_ITR_INT / 2,
+  .intena = 1,
+};
+const static iavf_dyn_ctln dyn_ctln_wb_on_itr = {
+  .clearpba = 1,
+  .itr_indx = 1,
+  .interval = 32 / 2,
+  .wb_on_itr = 1,
+};
+
+vnet_dev_rv_t
+iavf_port_vlan_strip_disable (vlib_main_t *vm, vnet_dev_port_t *port)
+{
+  vnet_dev_t *dev = port->dev;
+  iavf_port_t *ap = vnet_dev_get_port_data (port);
+  virtchnl_vlan_caps_t vc;
+  vnet_dev_rv_t rv;
+  u32 outer, inner;
+  const u32 mask = VIRTCHNL_VLAN_ETHERTYPE_8100;
+
+  if ((ap->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN_V2) == 0)
+    return iavf_vc_op_disable_vlan_stripping (vm, dev);
+
+  if ((rv = iavf_vc_op_get_offload_vlan_v2_caps (vm, dev, &vc)))
+    return rv;
+
+  outer = vc.offloads.stripping_support.outer;
+  inner = vc.offloads.stripping_support.inner;
+
+  outer = outer & VIRTCHNL_VLAN_TOGGLE ? outer & mask : 0;
+  inner = inner & VIRTCHNL_VLAN_TOGGLE ? inner & mask : 0;
+
+  virtchnl_vlan_setting_t vs = {
+    .vport_id = ap->vsi_id,
+    .outer_ethertype_setting = outer,
+    .inner_ethertype_setting = inner,
+  };
+
+  return iavf_vc_op_disable_vlan_stripping_v2 (vm, dev, &vs);
+}
+
+vnet_dev_rv_t
+iavf_port_init_rss (vlib_main_t *vm, vnet_dev_port_t *port)
+{
+  vnet_dev_t *dev = port->dev;
+  iavf_port_t *ap = vnet_dev_get_port_data (port);
+  u16 keylen = clib_min (sizeof (default_rss_key), ap->rss_key_size);
+  u8 buffer[VIRTCHNL_MSG_SZ (virtchnl_rss_key_t, key, keylen)];
+  virtchnl_rss_key_t *key = (virtchnl_rss_key_t *) buffer;
+
+  if (!port->attr.caps.rss)
+    return VNET_DEV_OK;
+
+  /* config RSS key */
+  *key = (virtchnl_rss_key_t){
+    .vsi_id = ap->vsi_id,
+    .key_len = keylen,
+  };
+
+  clib_memcpy (key->key, default_rss_key, sizeof (default_rss_key));
+
+  return iavf_vc_op_config_rss_key (vm, dev, key);
+}
+
+vnet_dev_rv_t
+iavf_port_update_rss_lut (vlib_main_t *vm, vnet_dev_port_t *port)
+{
+  vnet_dev_t *dev = port->dev;
+  iavf_port_t *ap = vnet_dev_get_port_data (port);
+  u16 lut_size = clib_min (IAVF_MAX_RSS_LUT_SIZE, ap->rss_lut_size);
+  u8 buffer[VIRTCHNL_MSG_SZ (virtchnl_rss_lut_t, lut, lut_size)];
+  virtchnl_rss_lut_t *lut = (virtchnl_rss_lut_t *) buffer;
+  u32 enabled_rxq_bmp = 0;
+
+  if (!port->attr.caps.rss)
+    return VNET_DEV_OK;
+
+  *lut = (virtchnl_rss_lut_t){
+    .vsi_id = ap->vsi_id,
+    .lut_entries = lut_size,
+  };
+
+  foreach_vnet_dev_port_rx_queue (q, port)
+    if (q->enabled)
+      enabled_rxq_bmp |= 1ULL << q->queue_id;
+
+  /* config RSS LUT */
+  for (u32 i = 0, j; i < lut->lut_entries;)
+    foreach_set_bit_index (j, enabled_rxq_bmp)
+      {
+	lut->lut[i++] = j;
+	if (i >= lut->lut_entries)
+	  break;
+      }
+
+  return iavf_vc_op_config_rss_lut (vm, dev, lut);
+}
+
+vnet_dev_rv_t
+iavf_port_init_vsi_queues (vlib_main_t *vm, vnet_dev_port_t *port)
+{
+  vnet_dev_t *dev = port->dev;
+  iavf_port_t *ap = vnet_dev_get_port_data (port);
+  virtchnl_queue_pair_info_t *qpi;
+  u16 vsi_id = ap->vsi_id;
+  u16 data_size = vlib_buffer_get_default_data_size (vm);
+  u16 max_frame_size = port->max_frame_size;
+  u8 buffer[VIRTCHNL_MSG_SZ (virtchnl_vsi_queue_config_info_t, qpair,
+			     ap->num_qp)];
+  virtchnl_vsi_queue_config_info_t *ci =
+    (virtchnl_vsi_queue_config_info_t *) buffer;
+
+  *ci = (virtchnl_vsi_queue_config_info_t){
+    .num_queue_pairs = ap->num_qp,
+    .vsi_id = vsi_id,
+  };
+
+  for (u16 i = 0; i < ap->num_qp; i++)
+    ci->qpair[i] = (virtchnl_queue_pair_info_t){
+      .rxq = { .vsi_id = vsi_id, .queue_id = i },
+      .txq = { .vsi_id = vsi_id, .queue_id = i },
+    };
+
+  foreach_vnet_dev_port_rx_queue (q, port)
+    {
+      iavf_rxq_t *arq = vnet_dev_get_rx_queue_data (q);
+      qpi = ci->qpair + q->queue_id;
+      qpi->rxq.ring_len = q->size;
+      qpi->rxq.databuffer_size = data_size;
+      qpi->rxq.dma_ring_addr = vnet_dev_get_dma_addr (vm, dev, arq->descs);
+      qpi->rxq.max_pkt_size = max_frame_size;
+    }
+
+  foreach_vnet_dev_port_tx_queue (q, port)
+    {
+      iavf_txq_t *atq = vnet_dev_get_tx_queue_data (q);
+      qpi = ci->qpair + q->queue_id;
+      qpi->txq.ring_len = q->size;
+      qpi->txq.dma_ring_addr = vnet_dev_get_dma_addr (vm, dev, atq->descs);
+    }
+
+  return iavf_vc_op_config_vsi_queues (vm, dev, ci);
+}
+
+vnet_dev_rv_t
+iavf_port_rx_irq_enable_disable (vlib_main_t *vm, vnet_dev_port_t *port,
+				 int enable)
+{
+  vnet_dev_t *dev = port->dev;
+  iavf_device_t *ad = vnet_dev_get_data (dev);
+  iavf_port_t *ap = vnet_dev_get_port_data (port);
+  u16 n_threads = vlib_get_n_threads ();
+  u8 buffer[VIRTCHNL_MSG_SZ (virtchnl_irq_map_info_t, vecmap, n_threads)];
+  virtchnl_irq_map_info_t *im = (virtchnl_irq_map_info_t *) buffer;
+  vnet_dev_rv_t rv;
+
+  if (port->attr.caps.interrupt_mode)
+    {
+      *im = (virtchnl_irq_map_info_t){
+	.num_vectors = n_threads,
+      };
+      for (u16 i = 0; i < im->num_vectors; i++)
+	im->vecmap[i] = (virtchnl_vector_map_t){
+	  .vsi_id = ap->vsi_id,
+	  .vector_id = i + 1,
+	};
+      if (enable)
+	foreach_vnet_dev_port_rx_queue (rxq, port)
+	  if (rxq->enabled)
+	    im->vecmap[rxq->rx_thread_index].rxq_map |= 1 << rxq->queue_id;
+    }
+  else
+    {
+      *im = (virtchnl_irq_map_info_t){
+	.num_vectors = 1,
+	.vecmap[0] = {
+	    .vsi_id = ap->vsi_id,
+	    .vector_id = 1,
+	},
+      };
+      if (enable)
+	foreach_vnet_dev_port_rx_queue (rxq, port)
+	  if (rxq->enabled)
+	    im->vecmap[0].rxq_map |= 1 << rxq->queue_id;
+    }
+
+  if ((rv = iavf_vc_op_config_irq_map (vm, dev, im)))
+    return rv;
+
+  for (int i = 0; i < im->num_vectors; i++)
+    {
+      u32 val;
+
+      if (enable == 0)
+	val = dyn_ctln_disabled.as_u32;
+      else if (ap->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
+	val = dyn_ctln_wb_on_itr.as_u32;
+      else
+	val = dyn_ctln_enabled.as_u32;
+
+      iavf_reg_write (ad, AVFINT_DYN_CTLN (im->vecmap[i].vector_id), val);
+    }
+
+  return rv;
+}
+
+vnet_dev_rv_t
+iavf_port_init (vlib_main_t *vm, vnet_dev_port_t *port)
+{
+  vnet_dev_rv_t rv;
+
+  log_debug (port->dev, "port %u", port->port_id);
+
+  if ((rv = iavf_port_vlan_strip_disable (vm, port)))
+    return rv;
+
+  if ((rv = iavf_port_init_rss (vm, port)))
+    return rv;
+
+  if (port->dev->poll_stats)
+    iavf_port_add_counters (vm, port);
+
+  return VNET_DEV_OK;
+}
+
+static vnet_dev_rv_t
+iavf_enable_disable_queues (vlib_main_t *vm, vnet_dev_port_t *port, int enable)
+{
+  iavf_port_t *ap = vnet_dev_get_port_data (port);
+
+  virtchnl_queue_select_t qs = {
+    .vsi_id = ap->vsi_id,
+  };
+
+  foreach_vnet_dev_port_rx_queue (q, port)
+    if ((enable && q->enabled) || (!enable && q->started))
+      qs.rx_queues |= 1ULL << q->queue_id;
+
+  foreach_vnet_dev_port_tx_queue (q, port)
+    if ((enable && q->enabled) || (!enable && q->started))
+      qs.tx_queues |= 1ULL << q->queue_id;
+
+  return enable ? iavf_vc_op_enable_queues (vm, port->dev, &qs) :
+			iavf_vc_op_disable_queues (vm, port->dev, &qs);
+}
+
+vnet_dev_rv_t
+iavf_port_start (vlib_main_t *vm, vnet_dev_port_t *port)
+{
+  vnet_dev_rv_t rv;
+
+  log_debug (port->dev, "port %u", port->port_id);
+
+  foreach_vnet_dev_port_rx_queue (q, port)
+    if (q->enabled)
+      if ((rv = iavf_rx_queue_start (vm, q)))
+	goto done;
+
+  foreach_vnet_dev_port_tx_queue (q, port)
+    if ((rv = iavf_tx_queue_start (vm, q)))
+      goto done;
+
+  if ((rv = iavf_port_update_rss_lut (vm, port)))
+    goto done;
+
+  /* configure qpairs */
+  if ((rv = iavf_port_init_vsi_queues (vm, port)))
+    goto done;
+
+  if ((rv = iavf_port_rx_irq_enable_disable (vm, port, /* enable */ 1)))
+    goto done;
+
+  if ((rv = iavf_enable_disable_queues (vm, port, 1)))
+    goto done;
+
+  if (port->dev->poll_stats)
+    vnet_dev_poll_port_add (vm, port, 1, iavf_port_poll_stats);
+
+done:
+  if (rv)
+    {
+      foreach_vnet_dev_port_rx_queue (q, port)
+	iavf_rx_queue_stop (vm, q);
+      foreach_vnet_dev_port_tx_queue (q, port)
+	iavf_tx_queue_stop (vm, q);
+    }
+  return rv;
+}
+
+void
+iavf_port_stop (vlib_main_t *vm, vnet_dev_port_t *port)
+{
+  log_debug (port->dev, "port %u", port->port_id);
+
+  iavf_enable_disable_queues (vm, port, /* enable */ 0);
+  iavf_port_rx_irq_enable_disable (vm, port, /* disable */ 0);
+
+  if (port->dev->poll_stats)
+    vnet_dev_poll_port_remove (vm, port, iavf_port_poll_stats);
+
+  foreach_vnet_dev_port_rx_queue (rxq, port)
+    iavf_rx_queue_stop (vm, rxq);
+
+  foreach_vnet_dev_port_tx_queue (txq, port)
+    iavf_tx_queue_stop (vm, txq);
+
+  vnet_dev_port_state_change (vm, port,
+			      (vnet_dev_port_state_changes_t){
+				.change.link_state = 1,
+				.change.link_speed = 1,
+				.link_speed = 0,
+				.link_state = 0,
+			      });
+}
+
+vnet_dev_rv_t
+iavf_port_cfg_change_validate (vlib_main_t *vm, vnet_dev_port_t *port,
+			       vnet_dev_port_cfg_change_req_t *req)
+{
+  vnet_dev_rv_t rv = VNET_DEV_OK;
+
+  switch (req->type)
+    {
+    case VNET_DEV_PORT_CFG_MAX_FRAME_SIZE:
+      if (port->started)
+	rv = VNET_DEV_ERR_PORT_STARTED;
+      break;
+
+    case VNET_DEV_PORT_CFG_PROMISC_MODE:
+    case VNET_DEV_PORT_CFG_CHANGE_PRIMARY_HW_ADDR:
+    case VNET_DEV_PORT_CFG_ADD_SECONDARY_HW_ADDR:
+    case VNET_DEV_PORT_CFG_REMOVE_SECONDARY_HW_ADDR:
+      break;
+
+    default:
+      rv = VNET_DEV_ERR_NOT_SUPPORTED;
+    };
+
+  return rv;
+}
+
+static vnet_dev_rv_t
+iavf_port_add_del_eth_addr (vlib_main_t *vm, vnet_dev_port_t *port,
+			    vnet_dev_hw_addr_t *addr, int is_add,
+			    int is_primary)
+{
+  iavf_port_t *ap = vnet_dev_get_port_data (port);
+  virtchnl_ether_addr_list_t al = {
+    .vsi_id = ap->vsi_id,
+    .num_elements = 1,
+    .list[0].primary = is_primary ? 1 : 0,
+    .list[0].extra = is_primary ? 0 : 1,
+  };
+
+  clib_memcpy (al.list[0].addr, addr, sizeof (al.list[0].addr));
+
+  return is_add ? iavf_vc_op_add_eth_addr (vm, port->dev, &al) :
+			iavf_vc_op_del_eth_addr (vm, port->dev, &al);
+}
+
+vnet_dev_rv_t
+iavf_port_cfg_change (vlib_main_t *vm, vnet_dev_port_t *port,
+		      vnet_dev_port_cfg_change_req_t *req)
+{
+  vnet_dev_t *dev = port->dev;
+  iavf_port_t *ap = vnet_dev_get_port_data (port);
+  vnet_dev_rv_t rv = VNET_DEV_OK;
+
+  switch (req->type)
+    {
+    case VNET_DEV_PORT_CFG_PROMISC_MODE:
+      {
+	virtchnl_promisc_info_t pi = {
+	  .vsi_id = ap->vsi_id,
+	  .unicast_promisc = req->promisc,
+	  .multicast_promisc = req->promisc,
+	};
+
+	rv = iavf_vc_op_config_promisc_mode (vm, dev, &pi);
+      }
+      break;
+
+    case VNET_DEV_PORT_CFG_CHANGE_PRIMARY_HW_ADDR:
+      rv = iavf_port_add_del_eth_addr (vm, port, &port->primary_hw_addr,
+				       /* is_add */ 0,
+				       /* is_primary */ 1);
+      if (rv == VNET_DEV_OK)
+	rv = iavf_port_add_del_eth_addr (vm, port, &req->addr,
+					 /* is_add */ 1,
+					 /* is_primary */ 1);
+      break;
+
+    case VNET_DEV_PORT_CFG_ADD_SECONDARY_HW_ADDR:
+      rv = iavf_port_add_del_eth_addr (vm, port, &req->addr,
+				       /* is_add */ 1,
+				       /* is_primary */ 0);
+      break;
+
+    case VNET_DEV_PORT_CFG_REMOVE_SECONDARY_HW_ADDR:
+      rv = iavf_port_add_del_eth_addr (vm, port, &req->addr,
+				       /* is_add */ 0,
+				       /* is_primary */ 0);
+      break;
+
+    case VNET_DEV_PORT_CFG_MAX_FRAME_SIZE:
+      break;
+
+    default:
+      return VNET_DEV_ERR_NOT_SUPPORTED;
+    };
+
+  return rv;
+}