diff mbox series

[v3,6/9] ipfrag: use accelerated CRC on riscv

Message ID 20240827153650.53170-2-daniel.gregory@bytedance.com (mailing list archive)
State New
Delegated to: Thomas Monjalon
Headers
Series riscv: implement accelerated crc using zbc |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Daniel Gregory Aug. 27, 2024, 3:36 p.m. UTC 
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.gregory@bytedance.com>
---
 lib/ip_frag/ip_frag_internal.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/lib/ip_frag/ip_frag_internal.c b/lib/ip_frag/ip_frag_internal.c
index 7cbef647df..19a28c447b 100644
--- a/lib/ip_frag/ip_frag_internal.c
+++ b/lib/ip_frag/ip_frag_internal.c
@@ -45,14 +45,14 @@  ipv4_frag_hash(const struct ip_frag_key *key, uint32_t *v1, uint32_t *v2)
 
 	p = (const uint32_t *)&key->src_dst;
 
-#if defined(RTE_ARCH_X86) || defined(RTE_ARCH_ARM64)
+#if defined(RTE_ARCH_X86) || defined(RTE_ARCH_ARM64) || defined(RTE_RISCV_FEATURE_ZBC)
 	v = rte_hash_crc_4byte(p[0], PRIME_VALUE);
 	v = rte_hash_crc_4byte(p[1], v);
 	v = rte_hash_crc_4byte(key->id, v);
 #else
 
 	v = rte_jhash_3words(p[0], p[1], key->id, PRIME_VALUE);
-#endif /* RTE_ARCH_X86 */
+#endif /* RTE_ARCH_X86 || RTE_ARCH_ARM64 || RTE_RISCV_FEATURE_ZBC */
 
 	*v1 =  v;
 	*v2 = (v << 7) + (v >> 14);
@@ -66,7 +66,7 @@  ipv6_frag_hash(const struct ip_frag_key *key, uint32_t *v1, uint32_t *v2)
 
 	p = (const uint32_t *) &key->src_dst;
 
-#if defined(RTE_ARCH_X86) || defined(RTE_ARCH_ARM64)
+#if defined(RTE_ARCH_X86) || defined(RTE_ARCH_ARM64) || defined(RTE_RISCV_FEATURE_ZBC)
 	v = rte_hash_crc_4byte(p[0], PRIME_VALUE);
 	v = rte_hash_crc_4byte(p[1], v);
 	v = rte_hash_crc_4byte(p[2], v);