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-rw-r--r--src/plugins/dev_iavf/iavf.c271
1 files changed, 271 insertions, 0 deletions
diff --git a/src/plugins/dev_iavf/iavf.c b/src/plugins/dev_iavf/iavf.c
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index 00000000000..a8b108c92b7
--- /dev/null
+++ b/src/plugins/dev_iavf/iavf.c
@@ -0,0 +1,271 @@
+/* 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 <vppinfra/ring.h>
+#include <dev_iavf/iavf.h>
+#include <dev_iavf/virtchnl.h>
+#include <dev_iavf/virtchnl_funcs.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/plugin/plugin.h>
+#include <vpp/app/version.h>
+
+VLIB_REGISTER_LOG_CLASS (iavf_log, static) = {
+ .class_name = "iavf",
+ .subclass_name = "init",
+};
+
+static const u32 driver_cap_flags =
+ /**/ VIRTCHNL_VF_CAP_ADV_LINK_SPEED |
+ /**/ VIRTCHNL_VF_LARGE_NUM_QPAIRS |
+ /**/ VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF |
+ /**/ VIRTCHNL_VF_OFFLOAD_FDIR_PF |
+ /**/ VIRTCHNL_VF_OFFLOAD_L2 |
+ /**/ VIRTCHNL_VF_OFFLOAD_REQ_QUEUES |
+ /**/ VIRTCHNL_VF_OFFLOAD_RSS_PF |
+ /**/ VIRTCHNL_VF_OFFLOAD_RX_POLLING |
+ /**/ VIRTCHNL_VF_OFFLOAD_VLAN |
+ /**/ VIRTCHNL_VF_OFFLOAD_VLAN_V2 |
+ /**/ VIRTCHNL_VF_OFFLOAD_WB_ON_ITR |
+ /**/ 0;
+
+static const virtchnl_version_info_t driver_virtchnl_version = {
+ .major = VIRTCHNL_VERSION_MAJOR,
+ .minor = VIRTCHNL_VERSION_MINOR,
+};
+
+#define _(f, n, s, d) \
+ { .name = #n, .desc = d, .severity = VL_COUNTER_SEVERITY_##s },
+
+vlib_error_desc_t iavf_rx_node_counters[] = { foreach_iavf_rx_node_counter };
+vlib_error_desc_t iavf_tx_node_counters[] = { foreach_iavf_tx_node_counter };
+#undef _
+
+vnet_dev_node_t iavf_rx_node = {
+ .error_counters = iavf_rx_node_counters,
+ .n_error_counters = ARRAY_LEN (iavf_rx_node_counters),
+ .format_trace = format_iavf_rx_trace,
+};
+
+vnet_dev_node_t iavf_tx_node = {
+ .error_counters = iavf_tx_node_counters,
+ .n_error_counters = ARRAY_LEN (iavf_tx_node_counters),
+};
+
+static struct
+{
+ u16 device_id;
+ char *desc;
+} iavf_dev_types[] = {
+ { 0x1889, "Intel(R) Adaptive Virtual Function" },
+ { 0x154c, "Intel(R) X710 Virtual Function" },
+ { 0x37cd, "Intel(R) X722 Virtual Function" },
+};
+
+static u8 *
+iavf_probe (vlib_main_t *vm, vnet_dev_bus_index_t bus_index, void *dev_info)
+{
+ vnet_dev_bus_pci_device_info_t *di = dev_info;
+
+ if (di->vendor_id != 0x8086)
+ return 0;
+
+ FOREACH_ARRAY_ELT (dt, iavf_dev_types)
+ {
+ if (dt->device_id == di->device_id)
+ return format (0, "%s", dt->desc);
+ }
+
+ return 0;
+}
+
+static vnet_dev_rv_t
+iavf_reset (vlib_main_t *vm, vnet_dev_t *dev)
+{
+ iavf_device_t *ad = vnet_dev_get_data (dev);
+ u32 n_tries = 50;
+
+ iavf_aq_init (vm, dev);
+ iavf_vc_op_reset_vf (vm, dev);
+
+ do
+ {
+ if (n_tries-- == 0)
+ return VNET_DEV_ERR_TIMEOUT;
+ vlib_process_suspend (vm, 0.02);
+ }
+ while ((iavf_reg_read (ad, VFGEN_RSTAT) & 3) != 2);
+
+ iavf_aq_init (vm, dev);
+ iavf_aq_poll_on (vm, dev);
+ return (VNET_DEV_OK);
+}
+
+static vnet_dev_rv_t
+iavf_alloc (vlib_main_t *vm, vnet_dev_t *dev)
+{
+ log_debug (dev, "alloc");
+ return iavf_aq_alloc (vm, dev);
+}
+
+static vnet_dev_rv_t
+iavf_init (vlib_main_t *vm, vnet_dev_t *dev)
+{
+ iavf_device_t *ad = vnet_dev_get_data (dev);
+ virtchnl_version_info_t ver;
+ virtchnl_vf_resource_t res;
+ vnet_dev_rv_t rv;
+
+ log_debug (dev, "init");
+
+ if ((rv = vnet_dev_pci_map_region (vm, dev, 0, &ad->bar0)))
+ return rv;
+
+ if ((rv = vnet_dev_pci_bus_master_enable (vm, dev)))
+ return rv;
+
+ if ((rv = iavf_reset (vm, dev)))
+ return rv;
+
+ if ((rv = iavf_vc_op_version (vm, dev, &driver_virtchnl_version, &ver)))
+ return rv;
+
+ if (ver.major != driver_virtchnl_version.major ||
+ ver.minor != driver_virtchnl_version.minor)
+ return VNET_DEV_ERR_UNSUPPORTED_DEVICE_VER;
+
+ if ((rv = iavf_vc_op_get_vf_resources (vm, dev, &driver_cap_flags, &res)))
+ return rv;
+
+ if (res.num_vsis != 1 || res.vsi_res[0].vsi_type != VIRTCHNL_VSI_SRIOV)
+ return VNET_DEV_ERR_UNSUPPORTED_DEVICE;
+
+ iavf_port_t iavf_port = {
+ .vf_cap_flags = res.vf_cap_flags,
+ .rss_key_size = res.rss_key_size,
+ .rss_lut_size = res.rss_lut_size,
+ .max_vectors = res.max_vectors,
+ .vsi_id = res.vsi_res[0].vsi_id,
+ .num_qp = res.vsi_res[0].num_queue_pairs,
+ };
+
+ vnet_dev_port_add_args_t port_add_args = {
+ .port = {
+ .attr = {
+ .type = VNET_DEV_PORT_TYPE_ETHERNET,
+ .max_rx_queues = res.num_queue_pairs,
+ .max_tx_queues = res.num_queue_pairs,
+ .max_supported_frame_size = res.max_mtu,
+ },
+ .ops = {
+ .init = iavf_port_init,
+ .start = iavf_port_start,
+ .stop = iavf_port_stop,
+ .config_change = iavf_port_cfg_change,
+ .format_status = format_iavf_port_status,
+ },
+ .data_size = sizeof (iavf_port_t),
+ .initial_data = &iavf_port,
+ },
+ .rx_node = &iavf_rx_node,
+ .tx_node = &iavf_tx_node,
+ .rx_queue = {
+ .config = {
+ .data_size = sizeof (iavf_rxq_t),
+ .default_size = 512,
+ .multiplier = 32,
+ .min_size = 32,
+ .max_size = 4096,
+ .size_is_power_of_two = 1,
+ },
+ .ops = {
+ .alloc = iavf_rx_queue_alloc,
+ .free = iavf_rx_queue_free,
+ },
+ },
+ .tx_queue = {
+ .config = {
+ .data_size = sizeof (iavf_txq_t),
+ .default_size = 512,
+ .multiplier = 32,
+ .min_size = 32,
+ .max_size = 4096,
+ .size_is_power_of_two = 1,
+ },
+ .ops = {
+ .alloc = iavf_tx_queue_alloc,
+ .free = iavf_tx_queue_free,
+ },
+ },
+ };
+
+ vnet_dev_set_hw_addr_eth_mac (&port_add_args.port.attr.hw_addr,
+ res.vsi_res[0].default_mac_addr);
+
+ log_info (dev, "MAC address is %U", format_ethernet_address,
+ res.vsi_res[0].default_mac_addr);
+
+ if (vlib_get_n_threads () <= vnet_dev_get_pci_n_msix_interrupts (dev) - 1)
+ port_add_args.port.attr.caps.interrupt_mode = 1;
+ else
+ log_notice (dev,
+ "number of threads (%u) bigger than number of interrupt lines "
+ "(%u), interrupt mode disabled",
+ vlib_get_n_threads (), res.max_vectors);
+
+ if (res.vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF)
+ {
+ if (res.rss_key_size < IAVF_MAX_RSS_KEY_SIZE)
+ {
+ log_notice (
+ dev, "unsupported RSS config provided by device, RSS disabled");
+ }
+ else
+ {
+ port_add_args.port.attr.caps.rss = 1;
+ if (res.rss_lut_size > IAVF_MAX_RSS_LUT_SIZE)
+ log_notice (dev, "device supports bigger RSS LUT than driver");
+ }
+ }
+
+ return vnet_dev_port_add (vm, dev, 0, &port_add_args);
+}
+
+static void
+iavf_deinit (vlib_main_t *vm, vnet_dev_t *dev)
+{
+ log_debug (dev, "deinit");
+ iavf_aq_poll_off (vm, dev);
+ iavf_aq_deinit (vm, dev);
+ iavf_aq_free (vm, dev);
+}
+
+static void
+iavf_free (vlib_main_t *vm, vnet_dev_t *dev)
+{
+ log_debug (dev, "free");
+ iavf_aq_free (vm, dev);
+}
+
+VNET_DEV_REGISTER_DRIVER (avf) = {
+ .name = "iavf",
+ .bus = "pci",
+ .device_data_sz = sizeof (iavf_device_t),
+ .runtime_temp_space_sz = sizeof (iavf_rt_data_t),
+ .ops = {
+ .alloc = iavf_alloc,
+ .init = iavf_init,
+ .deinit = iavf_deinit,
+ .free = iavf_free,
+ .probe = iavf_probe,
+ },
+};
+
+VLIB_PLUGIN_REGISTER () = {
+ .version = VPP_BUILD_VER,
+ .description = "dev_iavf",
+};