+
+static void
+virtio_get_speed_duplex(struct rte_eth_dev *eth_dev,
+ struct rte_eth_link *link)
+{
+ struct virtio_hw *hw = eth_dev->data->dev_private;
+ struct virtio_net_config *config;
+ struct virtio_net_config local_config;
+
+ config = &local_config;
+ virtio_read_dev_config(hw,
+ offsetof(struct virtio_net_config, speed),
+ &config->speed, sizeof(config->speed));
+ virtio_read_dev_config(hw,
+ offsetof(struct virtio_net_config, duplex),
+ &config->duplex, sizeof(config->duplex));
+ hw->speed = config->speed;
+ hw->duplex = config->duplex;
+ if (link != NULL) {
+ link->link_duplex = hw->duplex;
+ link->link_speed = hw->speed;
+ }
+ PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d",
+ hw->speed, hw->duplex);
+}
+
+static uint64_t
+ethdev_to_virtio_rss_offloads(uint64_t ethdev_hash_types)
+{
+ uint64_t virtio_hash_types = 0;
+
+ if (ethdev_hash_types & (RTE_ETH_RSS_IPV4 | RTE_ETH_RSS_FRAG_IPV4 |
+ RTE_ETH_RSS_NONFRAG_IPV4_OTHER))
+ virtio_hash_types |= VIRTIO_NET_HASH_TYPE_IPV4;
+
+ if (ethdev_hash_types & RTE_ETH_RSS_NONFRAG_IPV4_TCP)
+ virtio_hash_types |= VIRTIO_NET_HASH_TYPE_TCPV4;
+
+ if (ethdev_hash_types & RTE_ETH_RSS_NONFRAG_IPV4_UDP)
+ virtio_hash_types |= VIRTIO_NET_HASH_TYPE_UDPV4;
+
+ if (ethdev_hash_types & (RTE_ETH_RSS_IPV6 | RTE_ETH_RSS_FRAG_IPV6 |
+ RTE_ETH_RSS_NONFRAG_IPV6_OTHER))
+ virtio_hash_types |= VIRTIO_NET_HASH_TYPE_IPV6;
+
+ if (ethdev_hash_types & RTE_ETH_RSS_NONFRAG_IPV6_TCP)
+ virtio_hash_types |= VIRTIO_NET_HASH_TYPE_TCPV6;
+
+ if (ethdev_hash_types & RTE_ETH_RSS_NONFRAG_IPV6_UDP)
+ virtio_hash_types |= VIRTIO_NET_HASH_TYPE_UDPV6;
+
+ if (ethdev_hash_types & RTE_ETH_RSS_IPV6_EX)
+ virtio_hash_types |= VIRTIO_NET_HASH_TYPE_IP_EX;
+
+ if (ethdev_hash_types & RTE_ETH_RSS_IPV6_TCP_EX)
+ virtio_hash_types |= VIRTIO_NET_HASH_TYPE_TCP_EX;
+
+ if (ethdev_hash_types & RTE_ETH_RSS_IPV6_UDP_EX)
+ virtio_hash_types |= VIRTIO_NET_HASH_TYPE_UDP_EX;
+
+ return virtio_hash_types;
+}
+
+static uint64_t
+virtio_to_ethdev_rss_offloads(uint64_t virtio_hash_types)
+{
+ uint64_t rss_offloads = 0;
+
+ if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_IPV4)
+ rss_offloads |= RTE_ETH_RSS_IPV4 | RTE_ETH_RSS_FRAG_IPV4 |
+ RTE_ETH_RSS_NONFRAG_IPV4_OTHER;
+
+ if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_TCPV4)
+ rss_offloads |= RTE_ETH_RSS_NONFRAG_IPV4_TCP;
+
+ if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_UDPV4)
+ rss_offloads |= RTE_ETH_RSS_NONFRAG_IPV4_UDP;
+
+ if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_IPV6)
+ rss_offloads |= RTE_ETH_RSS_IPV6 | RTE_ETH_RSS_FRAG_IPV6 |
+ RTE_ETH_RSS_NONFRAG_IPV6_OTHER;
+
+ if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_TCPV6)
+ rss_offloads |= RTE_ETH_RSS_NONFRAG_IPV6_TCP;
+
+ if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_UDPV6)
+ rss_offloads |= RTE_ETH_RSS_NONFRAG_IPV6_UDP;
+
+ if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_IP_EX)
+ rss_offloads |= RTE_ETH_RSS_IPV6_EX;
+
+ if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_TCP_EX)
+ rss_offloads |= RTE_ETH_RSS_IPV6_TCP_EX;
+
+ if (virtio_hash_types & VIRTIO_NET_HASH_TYPE_UDP_EX)
+ rss_offloads |= RTE_ETH_RSS_IPV6_UDP_EX;
+
+ return rss_offloads;
+}
+
+static int
+virtio_dev_get_rss_config(struct virtio_hw *hw, uint32_t *rss_hash_types)
+{
+ struct virtio_net_config local_config;
+ struct virtio_net_config *config = &local_config;
+
+ virtio_read_dev_config(hw,
+ offsetof(struct virtio_net_config, rss_max_key_size),
+ &config->rss_max_key_size,
+ sizeof(config->rss_max_key_size));
+ if (config->rss_max_key_size < VIRTIO_NET_RSS_KEY_SIZE) {
+ PMD_INIT_LOG(ERR, "Invalid device RSS max key size (%u)",
+ config->rss_max_key_size);
+ return -EINVAL;
+ }
+
+ virtio_read_dev_config(hw,
+ offsetof(struct virtio_net_config,
+ rss_max_indirection_table_length),
+ &config->rss_max_indirection_table_length,
+ sizeof(config->rss_max_indirection_table_length));
+ if (config->rss_max_indirection_table_length < VIRTIO_NET_RSS_RETA_SIZE) {
+ PMD_INIT_LOG(ERR, "Invalid device RSS max reta size (%u)",
+ config->rss_max_indirection_table_length);
+ return -EINVAL;
+ }
+
+ virtio_read_dev_config(hw,
+ offsetof(struct virtio_net_config, supported_hash_types),
+ &config->supported_hash_types,
+ sizeof(config->supported_hash_types));
+ if ((config->supported_hash_types & VIRTIO_NET_HASH_TYPE_MASK) == 0) {
+ PMD_INIT_LOG(ERR, "Invalid device RSS hash types (0x%x)",
+ config->supported_hash_types);
+ return -EINVAL;
+ }
+
+ *rss_hash_types = config->supported_hash_types & VIRTIO_NET_HASH_TYPE_MASK;
+
+ PMD_INIT_LOG(DEBUG, "Device RSS config:");
+ PMD_INIT_LOG(DEBUG, "\t-Max key size: %u", config->rss_max_key_size);
+ PMD_INIT_LOG(DEBUG, "\t-Max reta size: %u", config->rss_max_indirection_table_length);
+ PMD_INIT_LOG(DEBUG, "\t-Supported hash types: 0x%x", *rss_hash_types);
+
+ return 0;
+}
+
+static int
+virtio_dev_rss_hash_update(struct rte_eth_dev *dev,
+ struct rte_eth_rss_conf *rss_conf)
+{
+ struct virtio_hw *hw = dev->data->dev_private;
+ char old_rss_key[VIRTIO_NET_RSS_KEY_SIZE];
+ uint32_t old_hash_types;
+ uint16_t nb_queues;
+ int ret;
+
+ if (!virtio_with_feature(hw, VIRTIO_NET_F_RSS))
+ return -ENOTSUP;
+
+ if (rss_conf->rss_hf & ~virtio_to_ethdev_rss_offloads(VIRTIO_NET_HASH_TYPE_MASK))
+ return -EINVAL;
+
+ old_hash_types = hw->rss_hash_types;
+ hw->rss_hash_types = ethdev_to_virtio_rss_offloads(rss_conf->rss_hf);
+
+ if (rss_conf->rss_key && rss_conf->rss_key_len) {
+ if (rss_conf->rss_key_len != VIRTIO_NET_RSS_KEY_SIZE) {
+ PMD_INIT_LOG(ERR, "Driver only supports %u RSS key length",
+ VIRTIO_NET_RSS_KEY_SIZE);
+ ret = -EINVAL;
+ goto restore_types;
+ }
+ memcpy(old_rss_key, hw->rss_key, VIRTIO_NET_RSS_KEY_SIZE);
+ memcpy(hw->rss_key, rss_conf->rss_key, VIRTIO_NET_RSS_KEY_SIZE);
+ }
+
+ nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
+ ret = virtio_set_multiple_queues_rss(dev, nb_queues);
+ if (ret < 0) {
+ PMD_INIT_LOG(ERR, "Failed to apply new RSS config to the device");
+ goto restore_key;
+ }
+
+ return 0;
+restore_key:
+ if (rss_conf->rss_key && rss_conf->rss_key_len)
+ memcpy(hw->rss_key, old_rss_key, VIRTIO_NET_RSS_KEY_SIZE);
+restore_types:
+ hw->rss_hash_types = old_hash_types;
+
+ return ret;
+}
+
+static int
+virtio_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
+ struct rte_eth_rss_conf *rss_conf)
+{
+ struct virtio_hw *hw = dev->data->dev_private;
+
+ if (!virtio_with_feature(hw, VIRTIO_NET_F_RSS))
+ return -ENOTSUP;
+
+ if (rss_conf->rss_key && rss_conf->rss_key_len >= VIRTIO_NET_RSS_KEY_SIZE)
+ memcpy(rss_conf->rss_key, hw->rss_key, VIRTIO_NET_RSS_KEY_SIZE);
+ rss_conf->rss_key_len = VIRTIO_NET_RSS_KEY_SIZE;
+ rss_conf->rss_hf = virtio_to_ethdev_rss_offloads(hw->rss_hash_types);
+
+ return 0;
+}
+
+static int virtio_dev_rss_reta_update(struct rte_eth_dev *dev,
+ struct rte_eth_rss_reta_entry64 *reta_conf,
+ uint16_t reta_size)
+{
+ struct virtio_hw *hw = dev->data->dev_private;
+ uint16_t nb_queues;
+ uint16_t old_reta[VIRTIO_NET_RSS_RETA_SIZE];
+ int idx, pos, i, ret;
+
+ if (!virtio_with_feature(hw, VIRTIO_NET_F_RSS))
+ return -ENOTSUP;
+
+ if (reta_size != VIRTIO_NET_RSS_RETA_SIZE)
+ return -EINVAL;
+
+ memcpy(old_reta, hw->rss_reta, sizeof(old_reta));
+
+ for (i = 0; i < reta_size; i++) {
+ idx = i / RTE_ETH_RETA_GROUP_SIZE;
+ pos = i % RTE_ETH_RETA_GROUP_SIZE;
+
+ if (((reta_conf[idx].mask >> pos) & 0x1) == 0)
+ continue;
+
+ hw->rss_reta[i] = reta_conf[idx].reta[pos];
+ }
+
+ nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
+ ret = virtio_set_multiple_queues_rss(dev, nb_queues);
+ if (ret < 0) {
+ PMD_INIT_LOG(ERR, "Failed to apply new RETA to the device");
+ memcpy(hw->rss_reta, old_reta, sizeof(old_reta));
+ }
+
+ hw->rss_rx_queues = dev->data->nb_rx_queues;
+
+ return ret;
+}
+
+static int virtio_dev_rss_reta_query(struct rte_eth_dev *dev,
+ struct rte_eth_rss_reta_entry64 *reta_conf,
+ uint16_t reta_size)
+{
+ struct virtio_hw *hw = dev->data->dev_private;
+ int idx, i;
+
+ if (!virtio_with_feature(hw, VIRTIO_NET_F_RSS))
+ return -ENOTSUP;
+
+ if (reta_size != VIRTIO_NET_RSS_RETA_SIZE)
+ return -EINVAL;
+
+ for (i = 0; i < reta_size; i++) {
+ idx = i / RTE_ETH_RETA_GROUP_SIZE;
+ reta_conf[idx].reta[i % RTE_ETH_RETA_GROUP_SIZE] = hw->rss_reta[i];
+ }
+
+ return 0;
+}
+
+/*
+ * As default RSS hash key, it uses the default key of the
+ * Intel IXGBE devices. It can be updated by the application
+ * with any 40B key value.
+ */
+static uint8_t rss_intel_key[VIRTIO_NET_RSS_KEY_SIZE] = {
+ 0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2,
+ 0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0,
+ 0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4,
+ 0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C,
+ 0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA,
+};
+
+static int
+virtio_dev_rss_init(struct rte_eth_dev *eth_dev)
+{
+ struct virtio_hw *hw = eth_dev->data->dev_private;
+ uint16_t nb_rx_queues = eth_dev->data->nb_rx_queues;
+ struct rte_eth_rss_conf *rss_conf;
+ int ret, i;
+
+ if (!nb_rx_queues) {
+ PMD_INIT_LOG(ERR, "Cannot init RSS if no Rx queues");
+ return -EINVAL;
+ }
+
+ rss_conf = ð_dev->data->dev_conf.rx_adv_conf.rss_conf;
+
+ ret = virtio_dev_get_rss_config(hw, &hw->rss_hash_types);
+ if (ret)
+ return ret;
+
+ if (rss_conf->rss_hf) {
+ /* Ensure requested hash types are supported by the device */
+ if (rss_conf->rss_hf & ~virtio_to_ethdev_rss_offloads(hw->rss_hash_types))
+ return -EINVAL;
+
+ hw->rss_hash_types = ethdev_to_virtio_rss_offloads(rss_conf->rss_hf);
+ }
+
+ if (!hw->rss_key) {
+ /* Setup default RSS key if not already setup by the user */
+ hw->rss_key = rte_malloc_socket("rss_key",
+ VIRTIO_NET_RSS_KEY_SIZE, 0,
+ eth_dev->device->numa_node);
+ if (!hw->rss_key) {
+ PMD_INIT_LOG(ERR, "Failed to allocate RSS key");
+ return -1;
+ }
+ }
+
+ if (rss_conf->rss_key && rss_conf->rss_key_len) {
+ if (rss_conf->rss_key_len != VIRTIO_NET_RSS_KEY_SIZE) {
+ PMD_INIT_LOG(ERR, "Driver only supports %u RSS key length",
+ VIRTIO_NET_RSS_KEY_SIZE);
+ return -EINVAL;
+ }
+ memcpy(hw->rss_key, rss_conf->rss_key, VIRTIO_NET_RSS_KEY_SIZE);
+ } else {
+ memcpy(hw->rss_key, rss_intel_key, VIRTIO_NET_RSS_KEY_SIZE);
+ }
+
+ if (!hw->rss_reta) {
+ /* Setup default RSS reta if not already setup by the user */
+ hw->rss_reta = rte_zmalloc_socket("rss_reta",
+ VIRTIO_NET_RSS_RETA_SIZE * sizeof(uint16_t), 0,
+ eth_dev->device->numa_node);
+ if (!hw->rss_reta) {
+ PMD_INIT_LOG(ERR, "Failed to allocate RSS reta");
+ return -1;
+ }
+
+ hw->rss_rx_queues = 0;
+ }
+
+ /* Re-initialize the RSS reta if the number of RX queues has changed */
+ if (hw->rss_rx_queues != nb_rx_queues) {
+ for (i = 0; i < VIRTIO_NET_RSS_RETA_SIZE; i++)
+ hw->rss_reta[i] = i % nb_rx_queues;
+ hw->rss_rx_queues = nb_rx_queues;
+ }
+
+ return 0;
+}
+