+int
+ixgbe_rss_conf_init(struct ixgbe_rte_flow_rss_conf *out,
+ const struct rte_flow_action_rss *in)
+{
+ if (in->key_len > RTE_DIM(out->key) ||
+ in->queue_num > RTE_DIM(out->queue))
+ return -EINVAL;
+ out->conf = (struct rte_flow_action_rss){
+ .func = in->func,
+ .level = in->level,
+ .types = in->types,
+ .key_len = in->key_len,
+ .queue_num = in->queue_num,
+ .key = memcpy(out->key, in->key, in->key_len),
+ .queue = memcpy(out->queue, in->queue,
+ sizeof(*in->queue) * in->queue_num),
+ };
+ return 0;
+}
+
+int
+ixgbe_action_rss_same(const struct rte_flow_action_rss *comp,
+ const struct rte_flow_action_rss *with)
+{
+ return (comp->func == with->func &&
+ comp->level == with->level &&
+ comp->types == with->types &&
+ comp->key_len == with->key_len &&
+ comp->queue_num == with->queue_num &&
+ !memcmp(comp->key, with->key, with->key_len) &&
+ !memcmp(comp->queue, with->queue,
+ sizeof(*with->queue) * with->queue_num));
+}
+
+int
+ixgbe_config_rss_filter(struct rte_eth_dev *dev,
+ struct ixgbe_rte_flow_rss_conf *conf, bool add)
+{
+ struct ixgbe_hw *hw;
+ uint32_t reta;
+ uint16_t i;
+ uint16_t j;
+ uint16_t sp_reta_size;
+ uint32_t reta_reg;
+ struct rte_eth_rss_conf rss_conf = {
+ .rss_key = conf->conf.key_len ?
+ (void *)(uintptr_t)conf->conf.key : NULL,
+ .rss_key_len = conf->conf.key_len,
+ .rss_hf = conf->conf.types,
+ };
+ struct ixgbe_filter_info *filter_info =
+ IXGBE_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+
+ PMD_INIT_FUNC_TRACE();
+ hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+ sp_reta_size = ixgbe_reta_size_get(hw->mac.type);
+
+ if (!add) {
+ if (ixgbe_action_rss_same(&filter_info->rss_info.conf,
+ &conf->conf)) {
+ ixgbe_rss_disable(dev);
+ memset(&filter_info->rss_info, 0,
+ sizeof(struct ixgbe_rte_flow_rss_conf));
+ return 0;
+ }
+ return -EINVAL;
+ }
+
+ if (filter_info->rss_info.conf.queue_num)
+ return -EINVAL;
+ /* Fill in redirection table
+ * The byte-swap is needed because NIC registers are in
+ * little-endian order.
+ */
+ reta = 0;
+ for (i = 0, j = 0; i < sp_reta_size; i++, j++) {
+ reta_reg = ixgbe_reta_reg_get(hw->mac.type, i);
+
+ if (j == conf->conf.queue_num)
+ j = 0;
+ reta = (reta << 8) | conf->conf.queue[j];
+ if ((i & 3) == 3)
+ IXGBE_WRITE_REG(hw, reta_reg,
+ rte_bswap32(reta));
+ }
+
+ /* Configure the RSS key and the RSS protocols used to compute
+ * the RSS hash of input packets.
+ */
+ if ((rss_conf.rss_hf & IXGBE_RSS_OFFLOAD_ALL) == 0) {
+ ixgbe_rss_disable(dev);
+ return 0;
+ }
+ if (rss_conf.rss_key == NULL)
+ rss_conf.rss_key = rss_intel_key; /* Default hash key */
+ ixgbe_hw_rss_hash_set(hw, &rss_conf);
+
+ if (ixgbe_rss_conf_init(&filter_info->rss_info, &conf->conf))
+ return -EINVAL;
+
+ return 0;
+}
+
+/* Stubs needed for linkage when RTE_ARCH_PPC_64 or RTE_ARCH_RISCV is set */
+#if defined(RTE_ARCH_PPC_64) || defined(RTE_ARCH_RISCV)
+int