[dpdk-dev] [dpdk-dev v1] crypto/aesni_gcm: fix performance issue
From: Kai Ji <hidden>
Date: 2021-06-29 12:36:09
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
This patch fixes the aesni_gcm performance issue on systems with AVX512
CPU flag presented but with VAES CPU flag missing, such as Skylake.
Fixes: 81fe96a0cece ("crypto/aesni_gcm: use architecture independent API")
Cc: pablo.de.lara.guarch@intel.com
Signed-off-by: Kai Ji <redacted>
---
drivers/crypto/aesni_gcm/aesni_gcm_pmd.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c b/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c
index bc87e44a9d..f8dea484b4 100644
--- a/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c
+++ b/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c@@ -842,8 +842,14 @@ aesni_gcm_create(const char *name, init_mb_mgr_avx2(mb_mgr); break; case RTE_AESNI_GCM_AVX512: - dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX512; - init_mb_mgr_avx512(mb_mgr); + if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_VAES)) { + dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX512; + init_mb_mgr_avx512(mb_mgr); + } else { + dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AVX2; + init_mb_mgr_avx2(mb_mgr); + vector_mode = RTE_AESNI_GCM_AVX2; + } break; default: AESNI_GCM_LOG(ERR, "Unsupported vector mode %u\n", vector_mode);
--
2.17.1