[PATCH v3 8/9] hash/cuckoo: use accelerated CRC on riscv

[Daniel Gregory]

When the RISC-V Zbc (carryless multiplication) extension is present, an
implementation of CRC hashing using hardware instructions is available.
Use it rather than jhash.

Signed-off-by: Daniel Gregory <daniel.greg...@bytedance.com>
---
 lib/hash/rte_cuckoo_hash.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/hash/rte_cuckoo_hash.c b/lib/hash/rte_cuckoo_hash.c
index 577b5839d3..872f88fdce 100644
--- a/lib/hash/rte_cuckoo_hash.c
+++ b/lib/hash/rte_cuckoo_hash.c
@@ -427,6 +427,9 @@ rte_hash_create(const struct rte_hash_parameters *params)
 #elif defined(RTE_ARCH_ARM64)
        if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_CRC32))
                default_hash_func = (rte_hash_function)rte_hash_crc;
+#elif defined(RTE_ARCH_RISCV)
+       if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_RISCV_EXT_ZBC))
+               default_hash_func = (rte_hash_function)rte_hash_crc;
 #endif
        /* Setup hash context */
        strlcpy(h->name, params->name, sizeof(h->name));
-- 
2.39.2