+
+int bnxt_rte_to_hwrm_hash_level(struct bnxt *bp, uint64_t hash_f, uint32_t lvl)
+{
+ uint32_t mode = HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_DEFAULT;
+ bool l3 = (hash_f & (ETH_RSS_IPV4 | ETH_RSS_IPV6));
+ bool l4 = (hash_f & (ETH_RSS_NONFRAG_IPV4_UDP |
+ ETH_RSS_NONFRAG_IPV6_UDP |
+ ETH_RSS_NONFRAG_IPV4_TCP |
+ ETH_RSS_NONFRAG_IPV6_TCP));
+ bool l3_only = l3 && !l4;
+ bool l3_and_l4 = l3 && l4;
+
+ /* If FW has not advertised capability to configure outer/inner
+ * RSS hashing , just log a message. HW will work in default RSS mode.
+ */
+ if (!(bp->vnic_cap_flags & BNXT_VNIC_CAP_OUTER_RSS)) {
+ PMD_DRV_LOG(ERR, "RSS hash level cannot be configured\n");
+ return mode;
+ }
+
+ switch (lvl) {
+ case BNXT_RSS_LEVEL_INNERMOST:
+ if (l3_and_l4 || l4)
+ mode =
+ HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_INNERMOST_4;
+ else if (l3_only)
+ mode =
+ HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_INNERMOST_2;
+ break;
+ case BNXT_RSS_LEVEL_OUTERMOST:
+ if (l3_and_l4 || l4)
+ mode =
+ HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_OUTERMOST_4;
+ else if (l3_only)
+ mode =
+ HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_OUTERMOST_2;
+ break;
+ default:
+ mode = HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_DEFAULT;
+ break;
+ }
+
+ return mode;
+}
+
+uint64_t bnxt_hwrm_to_rte_rss_level(struct bnxt *bp, uint32_t mode)
+{
+ uint64_t rss_level = 0;
+
+ /* If FW has not advertised capability to configure inner/outer RSS
+ * return default hash mode.
+ */
+ if (!(bp->vnic_cap_flags & BNXT_VNIC_CAP_OUTER_RSS))
+ return ETH_RSS_LEVEL_PMD_DEFAULT;
+
+ if (mode == HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_OUTERMOST_2 ||
+ mode == HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_OUTERMOST_4)
+ rss_level |= ETH_RSS_LEVEL_OUTERMOST;
+ else if (mode == HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_INNERMOST_2 ||
+ mode == HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_INNERMOST_4)
+ rss_level |= ETH_RSS_LEVEL_INNERMOST;
+ else
+ rss_level |= ETH_RSS_LEVEL_PMD_DEFAULT;
+
+ return rss_level;
+}