ethdev: allow to get RSS hash functions and key

[dpdk.git] / lib / librte_pmd_ixgbe / ixgbe_rxtx.c

diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
index 111d1fa..9f30025 100644 (file)
--- a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
@@ -2369,6 +2369,59 @@ ixgbe_dev_rss_hash_update(struct rte_eth_dev *dev,
        return 0;
 }
 
+int
+ixgbe_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
+                           struct rte_eth_rss_conf *rss_conf)
+{
+       struct ixgbe_hw *hw;
+       uint8_t *hash_key;
+       uint32_t mrqc;
+       uint32_t rss_key;
+       uint16_t rss_hf;
+       uint16_t i;
+
+       hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+       hash_key = rss_conf->rss_key;
+       if (hash_key != NULL) {
+               /* Return RSS hash key */
+               for (i = 0; i < 10; i++) {
+                       rss_key = IXGBE_READ_REG_ARRAY(hw, IXGBE_RSSRK(0), i);
+                       hash_key[(i * 4)] = rss_key & 0x000000FF;
+                       hash_key[(i * 4) + 1] = (rss_key >> 8) & 0x000000FF;
+                       hash_key[(i * 4) + 2] = (rss_key >> 16) & 0x000000FF;
+                       hash_key[(i * 4) + 3] = (rss_key >> 24) & 0x000000FF;
+               }
+       }
+
+       /* Get RSS functions configured in MRQC register */
+       mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC);
+       if ((mrqc & IXGBE_MRQC_RSSEN) == 0) { /* RSS is disabled */
+               rss_conf->rss_hf = 0;
+               return 0;
+       }
+       rss_hf = 0;
+       if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4)
+               rss_hf |= ETH_RSS_IPV4;
+       if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4_TCP)
+               rss_hf |= ETH_RSS_IPV4_TCP;
+       if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6)
+               rss_hf |= ETH_RSS_IPV6;
+       if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX)
+               rss_hf |= ETH_RSS_IPV6_EX;
+       if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_TCP)
+               rss_hf |= ETH_RSS_IPV6_TCP;
+       if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP)
+               rss_hf |= ETH_RSS_IPV6_TCP_EX;
+       if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4_UDP)
+               rss_hf |= ETH_RSS_IPV4_UDP;
+       if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_UDP)
+               rss_hf |= ETH_RSS_IPV6_UDP;
+       if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP)
+               rss_hf |= ETH_RSS_IPV6_UDP_EX;
+       rss_conf->rss_hf = rss_hf;
+       return 0;
+}
+
 static void
 ixgbe_rss_configure(struct rte_eth_dev *dev)
 {