+int
+ngbe_dev_rss_reta_update(struct rte_eth_dev *dev,
+ struct rte_eth_rss_reta_entry64 *reta_conf,
+ uint16_t reta_size)
+{
+ uint8_t i, j, mask;
+ uint32_t reta;
+ uint16_t idx, shift;
+ struct ngbe_adapter *adapter = ngbe_dev_adapter(dev);
+ struct ngbe_hw *hw = ngbe_dev_hw(dev);
+
+ PMD_INIT_FUNC_TRACE();
+
+ if (!hw->is_pf) {
+ PMD_DRV_LOG(ERR, "RSS reta update is not supported on this "
+ "NIC.");
+ return -ENOTSUP;
+ }
+
+ if (reta_size != RTE_ETH_RSS_RETA_SIZE_128) {
+ PMD_DRV_LOG(ERR, "The size of hash lookup table configured "
+ "(%d) doesn't match the number hardware can supported "
+ "(%d)", reta_size, RTE_ETH_RSS_RETA_SIZE_128);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < reta_size; i += 4) {
+ idx = i / RTE_ETH_RETA_GROUP_SIZE;
+ shift = i % RTE_ETH_RETA_GROUP_SIZE;
+ mask = (uint8_t)RS64(reta_conf[idx].mask, shift, 0xF);
+ if (!mask)
+ continue;
+
+ reta = rd32a(hw, NGBE_REG_RSSTBL, i >> 2);
+ for (j = 0; j < 4; j++) {
+ if (RS8(mask, j, 0x1)) {
+ reta &= ~(MS32(8 * j, 0xFF));
+ reta |= LS32(reta_conf[idx].reta[shift + j],
+ 8 * j, 0xFF);
+ }
+ }
+ wr32a(hw, NGBE_REG_RSSTBL, i >> 2, reta);
+ }
+ adapter->rss_reta_updated = 1;
+
+ return 0;
+}
+
+int
+ngbe_dev_rss_reta_query(struct rte_eth_dev *dev,
+ struct rte_eth_rss_reta_entry64 *reta_conf,
+ uint16_t reta_size)
+{
+ struct ngbe_hw *hw = ngbe_dev_hw(dev);
+ uint8_t i, j, mask;
+ uint32_t reta;
+ uint16_t idx, shift;
+
+ PMD_INIT_FUNC_TRACE();
+
+ if (reta_size != RTE_ETH_RSS_RETA_SIZE_128) {
+ PMD_DRV_LOG(ERR, "The size of hash lookup table configured "
+ "(%d) doesn't match the number hardware can supported "
+ "(%d)", reta_size, RTE_ETH_RSS_RETA_SIZE_128);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < reta_size; i += 4) {
+ idx = i / RTE_ETH_RETA_GROUP_SIZE;
+ shift = i % RTE_ETH_RETA_GROUP_SIZE;
+ mask = (uint8_t)RS64(reta_conf[idx].mask, shift, 0xF);
+ if (!mask)
+ continue;
+
+ reta = rd32a(hw, NGBE_REG_RSSTBL, i >> 2);
+ for (j = 0; j < 4; j++) {
+ if (RS8(mask, j, 0x1))
+ reta_conf[idx].reta[shift + j] =
+ (uint16_t)RS32(reta, 8 * j, 0xFF);
+ }
+ }
+
+ return 0;
+}
+