+ * This function returns the supported (default) set when @p types has
+ * special value 0.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param types
+ * Depending on @p verbs_to_dpdk, hash types in either DPDK (see struct
+ * rte_eth_rss_conf) or Verbs format.
+ * @param verbs_to_dpdk
+ * A zero value converts @p types from DPDK to Verbs, a nonzero value
+ * performs the reverse operation.
+ *
+ * @return
+ * Converted RSS hash fields on success, (uint64_t)-1 otherwise and
+ * rte_errno is set.
+ */
+uint64_t
+mlx4_conv_rss_types(struct mlx4_priv *priv, uint64_t types, int verbs_to_dpdk)
+{
+ enum {
+ INNER,
+ IPV4, IPV4_1, IPV4_2, IPV6, IPV6_1, IPV6_2, IPV6_3,
+ TCP, UDP,
+ IPV4_TCP, IPV4_UDP, IPV6_TCP, IPV6_TCP_1, IPV6_UDP, IPV6_UDP_1,
+ };
+ enum {
+ VERBS_IPV4 = IBV_RX_HASH_SRC_IPV4 | IBV_RX_HASH_DST_IPV4,
+ VERBS_IPV6 = IBV_RX_HASH_SRC_IPV6 | IBV_RX_HASH_DST_IPV6,
+ VERBS_TCP = IBV_RX_HASH_SRC_PORT_TCP | IBV_RX_HASH_DST_PORT_TCP,
+ VERBS_UDP = IBV_RX_HASH_SRC_PORT_UDP | IBV_RX_HASH_DST_PORT_UDP,
+ };
+ static const uint64_t dpdk[] = {
+ [INNER] = 0,
+ [IPV4] = ETH_RSS_IPV4,
+ [IPV4_1] = ETH_RSS_FRAG_IPV4,
+ [IPV4_2] = ETH_RSS_NONFRAG_IPV4_OTHER,
+ [IPV6] = ETH_RSS_IPV6,
+ [IPV6_1] = ETH_RSS_FRAG_IPV6,
+ [IPV6_2] = ETH_RSS_NONFRAG_IPV6_OTHER,
+ [IPV6_3] = ETH_RSS_IPV6_EX,
+ [TCP] = 0,
+ [UDP] = 0,
+ [IPV4_TCP] = ETH_RSS_NONFRAG_IPV4_TCP,
+ [IPV4_UDP] = ETH_RSS_NONFRAG_IPV4_UDP,
+ [IPV6_TCP] = ETH_RSS_NONFRAG_IPV6_TCP,
+ [IPV6_TCP_1] = ETH_RSS_IPV6_TCP_EX,
+ [IPV6_UDP] = ETH_RSS_NONFRAG_IPV6_UDP,
+ [IPV6_UDP_1] = ETH_RSS_IPV6_UDP_EX,
+ };
+ static const uint64_t verbs[RTE_DIM(dpdk)] = {
+ [INNER] = IBV_RX_HASH_INNER,
+ [IPV4] = VERBS_IPV4,
+ [IPV4_1] = VERBS_IPV4,
+ [IPV4_2] = VERBS_IPV4,
+ [IPV6] = VERBS_IPV6,
+ [IPV6_1] = VERBS_IPV6,
+ [IPV6_2] = VERBS_IPV6,
+ [IPV6_3] = VERBS_IPV6,
+ [TCP] = VERBS_TCP,
+ [UDP] = VERBS_UDP,
+ [IPV4_TCP] = VERBS_IPV4 | VERBS_TCP,
+ [IPV4_UDP] = VERBS_IPV4 | VERBS_UDP,
+ [IPV6_TCP] = VERBS_IPV6 | VERBS_TCP,
+ [IPV6_TCP_1] = VERBS_IPV6 | VERBS_TCP,
+ [IPV6_UDP] = VERBS_IPV6 | VERBS_UDP,
+ [IPV6_UDP_1] = VERBS_IPV6 | VERBS_UDP,
+ };
+ const uint64_t *in = verbs_to_dpdk ? verbs : dpdk;
+ const uint64_t *out = verbs_to_dpdk ? dpdk : verbs;
+ uint64_t seen = 0;
+ uint64_t conv = 0;
+ unsigned int i;
+
+ if (!types) {
+ if (!verbs_to_dpdk)
+ return priv->hw_rss_sup;
+ types = priv->hw_rss_sup;
+ }
+ for (i = 0; i != RTE_DIM(dpdk); ++i)
+ if (in[i] && (types & in[i]) == in[i]) {
+ seen |= types & in[i];
+ conv |= out[i];
+ }
+ if ((verbs_to_dpdk || (conv & priv->hw_rss_sup) == conv) &&
+ !(types & ~seen))
+ return conv;
+ rte_errno = ENOTSUP;
+ return (uint64_t)-1;
+}
+
+/**
+ * Merge Ethernet pattern item into flow rule handle.
+ *
+ * Additional mlx4-specific constraints on supported fields:
+ *
+ * - No support for partial masks, except in the specific case of matching
+ * all multicast traffic (@p spec->dst and @p mask->dst equal to
+ * 01:00:00:00:00:00).
+ * - Not providing @p item->spec or providing an empty @p mask->dst is
+ * *only* supported if the rule doesn't specify additional matching
+ * criteria (i.e. rule is promiscuous-like).
+ *
+ * @param[in, out] flow
+ * Flow rule handle to update.
+ * @param[in] item
+ * Pattern item to merge.
+ * @param[in] proc
+ * Associated item-processing object.
+ * @param[out] error
+ * Perform verbose error reporting if not NULL.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.