+ qinfo->conf.offloads = txq->offloads;
+}
+
+int
+igb_rss_conf_init(struct rte_eth_dev *dev,
+ struct igb_rte_flow_rss_conf *out,
+ const struct rte_flow_action_rss *in)
+{
+ struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+ if (in->key_len > RTE_DIM(out->key) ||
+ ((hw->mac.type == e1000_82576) &&
+ (in->queue_num > IGB_MAX_RX_QUEUE_NUM_82576)) ||
+ ((hw->mac.type != e1000_82576) &&
+ (in->queue_num > IGB_MAX_RX_QUEUE_NUM)))
+ 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
+igb_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
+igb_config_rss_filter(struct rte_eth_dev *dev,
+ struct igb_rte_flow_rss_conf *conf, bool add)
+{
+ uint32_t shift;
+ uint16_t i, j;
+ 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 e1000_filter_info *filter_info =
+ E1000_DEV_PRIVATE_TO_FILTER_INFO(dev->data->dev_private);
+ struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+ hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+ if (!add) {
+ if (igb_action_rss_same(&filter_info->rss_info.conf,
+ &conf->conf)) {
+ igb_rss_disable(dev);
+ memset(&filter_info->rss_info, 0,
+ sizeof(struct igb_rte_flow_rss_conf));
+ return 0;
+ }
+ return -EINVAL;
+ }
+
+ if (filter_info->rss_info.conf.queue_num)
+ return -EINVAL;
+
+ /* Fill in redirection table. */
+ shift = (hw->mac.type == e1000_82575) ? 6 : 0;
+ for (i = 0, j = 0; i < 128; i++, j++) {
+ union e1000_reta {
+ uint32_t dword;
+ uint8_t bytes[4];
+ } reta;
+ uint8_t q_idx;
+
+ if (j == conf->conf.queue_num)
+ j = 0;
+ q_idx = conf->conf.queue[j];
+ reta.bytes[i & 3] = (uint8_t)(q_idx << shift);
+ if ((i & 3) == 3)
+ E1000_WRITE_REG(hw, E1000_RETA(i >> 2), reta.dword);
+ }
+
+ /* Configure the RSS key and the RSS protocols used to compute
+ * the RSS hash of input packets.
+ */
+ if ((rss_conf.rss_hf & IGB_RSS_OFFLOAD_ALL) == 0) {
+ igb_rss_disable(dev);
+ return 0;
+ }
+ if (rss_conf.rss_key == NULL)
+ rss_conf.rss_key = rss_intel_key; /* Default hash key */
+ igb_hw_rss_hash_set(hw, &rss_conf);
+
+ if (igb_rss_conf_init(dev, &filter_info->rss_info, &conf->conf))
+ return -EINVAL;
+
+ return 0;