ethdev: add RSS types for IPv6 prefix

This patch defines new RSS offload types for IPv6 prefix with 32, 40,
48, 56, 64, 96 bits of both SRC and DST IPv6 address.
Ref https://tools.ietf.org/html/rfc6052.

Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index 631b146..03356cd 100644 (file)
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -539,6 +539,19 @@ struct rte_eth_rss_conf {
 #define ETH_RSS_L2_SRC_ONLY        (1ULL << 59)
 #define ETH_RSS_L2_DST_ONLY        (1ULL << 58)
 
+/*
+ * Only select IPV6 address prefix as RSS input set according to
+ * https://tools.ietf.org/html/rfc6052
+ * Must be combined with ETH_RSS_IPV6, ETH_RSS_NONFRAG_IPV6_UDP,
+ * ETH_RSS_NONFRAG_IPV6_TCP, ETH_RSS_NONFRAG_IPV6_SCTP.
+ */
+#define RTE_ETH_RSS_L3_PRE32      (1ULL << 57)
+#define RTE_ETH_RSS_L3_PRE40      (1ULL << 56)
+#define RTE_ETH_RSS_L3_PRE48      (1ULL << 55)
+#define RTE_ETH_RSS_L3_PRE56      (1ULL << 54)
+#define RTE_ETH_RSS_L3_PRE64      (1ULL << 53)
+#define RTE_ETH_RSS_L3_PRE96      (1ULL << 52)
+
 /**
  * For input set change of hash filter, if SRC_ONLY and DST_ONLY of
  * the same level are used simultaneously, it is the same case as
@@ -561,6 +574,102 @@ rte_eth_rss_hf_refine(uint64_t rss_hf)
        return rss_hf;
 }
 
+#define ETH_RSS_IPV6_PRE32 ( \
+               ETH_RSS_IPV6 | \
+               RTE_ETH_RSS_L3_PRE32)
+
+#define ETH_RSS_IPV6_PRE40 ( \
+               ETH_RSS_IPV6 | \
+               RTE_ETH_RSS_L3_PRE40)
+
+#define ETH_RSS_IPV6_PRE48 ( \
+               ETH_RSS_IPV6 | \
+               RTE_ETH_RSS_L3_PRE48)
+
+#define ETH_RSS_IPV6_PRE56 ( \
+               ETH_RSS_IPV6 | \
+               RTE_ETH_RSS_L3_PRE56)
+
+#define ETH_RSS_IPV6_PRE64 ( \
+               ETH_RSS_IPV6 | \
+               RTE_ETH_RSS_L3_PRE64)
+
+#define ETH_RSS_IPV6_PRE96 ( \
+               ETH_RSS_IPV6 | \
+               RTE_ETH_RSS_L3_PRE96)
+
+#define ETH_RSS_IPV6_PRE32_UDP ( \
+               ETH_RSS_NONFRAG_IPV6_UDP | \
+               RTE_ETH_RSS_L3_PRE32)
+
+#define ETH_RSS_IPV6_PRE40_UDP ( \
+               ETH_RSS_NONFRAG_IPV6_UDP | \
+               RTE_ETH_RSS_L3_PRE40)
+
+#define ETH_RSS_IPV6_PRE48_UDP ( \
+               ETH_RSS_NONFRAG_IPV6_UDP | \
+               RTE_ETH_RSS_L3_PRE48)
+
+#define ETH_RSS_IPV6_PRE56_UDP ( \
+               ETH_RSS_NONFRAG_IPV6_UDP | \
+               RTE_ETH_RSS_L3_PRE56)
+
+#define ETH_RSS_IPV6_PRE64_UDP ( \
+               ETH_RSS_NONFRAG_IPV6_UDP | \
+               RTE_ETH_RSS_L3_PRE64)
+
+#define ETH_RSS_IPV6_PRE96_UDP ( \
+               ETH_RSS_NONFRAG_IPV6_UDP | \
+               RTE_ETH_RSS_L3_PRE96)
+
+#define ETH_RSS_IPV6_PRE32_TCP ( \
+               ETH_RSS_NONFRAG_IPV6_TCP | \
+               RTE_ETH_RSS_L3_PRE32)
+
+#define ETH_RSS_IPV6_PRE40_TCP ( \
+               ETH_RSS_NONFRAG_IPV6_TCP | \
+               RTE_ETH_RSS_L3_PRE40)
+
+#define ETH_RSS_IPV6_PRE48_TCP ( \
+               ETH_RSS_NONFRAG_IPV6_TCP | \
+               RTE_ETH_RSS_L3_PRE48)
+
+#define ETH_RSS_IPV6_PRE56_TCP ( \
+               ETH_RSS_NONFRAG_IPV6_TCP | \
+               RTE_ETH_RSS_L3_PRE56)
+
+#define ETH_RSS_IPV6_PRE64_TCP ( \
+               ETH_RSS_NONFRAG_IPV6_TCP | \
+               RTE_ETH_RSS_L3_PRE64)
+
+#define ETH_RSS_IPV6_PRE96_TCP ( \
+               ETH_RSS_NONFRAG_IPV6_TCP | \
+               RTE_ETH_RSS_L3_PRE96)
+
+#define ETH_RSS_IPV6_PRE32_SCTP ( \
+               ETH_RSS_NONFRAG_IPV6_SCTP | \
+               RTE_ETH_RSS_L3_PRE32)
+
+#define ETH_RSS_IPV6_PRE40_SCTP ( \
+               ETH_RSS_NONFRAG_IPV6_SCTP | \
+               RTE_ETH_RSS_L3_PRE40)
+
+#define ETH_RSS_IPV6_PRE48_SCTP ( \
+               ETH_RSS_NONFRAG_IPV6_SCTP | \
+               RTE_ETH_RSS_L3_PRE48)
+
+#define ETH_RSS_IPV6_PRE56_SCTP ( \
+               ETH_RSS_NONFRAG_IPV6_SCTP | \
+               RTE_ETH_RSS_L3_PRE56)
+
+#define ETH_RSS_IPV6_PRE64_SCTP ( \
+               ETH_RSS_NONFRAG_IPV6_SCTP | \
+               RTE_ETH_RSS_L3_PRE64)
+
+#define ETH_RSS_IPV6_PRE96_SCTP ( \
+               ETH_RSS_NONFRAG_IPV6_SCTP | \
+               RTE_ETH_RSS_L3_PRE96)
+
 #define ETH_RSS_IP ( \
        ETH_RSS_IPV4 | \
        ETH_RSS_FRAG_IPV4 | \