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crypto/aesni_mb: allow device init if no AES-NI is present

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The IPSec Multi buffer library does not require AES-NI
instructions to be supported by the CPU, as it can emulate these
instructions in software (adding a big performance penalty when
using AES algorithms).

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
This commit is contained in:
Pablo de Lara 2019-10-17 17:30:49 +01:00 committed by Akhil Goyal
parent c0ded84913
commit fb1033a788
1 changed files with 5 additions and 7 deletions
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12
drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
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@ -1251,12 +1251,6 @@ cryptodev_aesni_mb_create(const char *name,
enum aesni_mb_vector_mode vector_mode;
MB_MGR *mb_mgr;
/* Check CPU for support for AES instruction set */
if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AES)) {
AESNI_MB_LOG(ERR, "AES instructions not supported by CPU");
return -EFAULT;
}
dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
if (dev == NULL) {
AESNI_MB_LOG(ERR, "failed to create cryptodev vdev");
@ -1282,9 +1276,13 @@ cryptodev_aesni_mb_create(const char *name,
dev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
RTE_CRYPTODEV_FF_CPU_AESNI |
RTE_CRYPTODEV_FF_OOP_LB_IN_LB_OUT;
/* Check CPU for support for AES instruction set */
if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AES))
dev->feature_flags |= RTE_CRYPTODEV_FF_CPU_AESNI;
else
AESNI_MB_LOG(WARNING, "AES instructions not supported by CPU");
mb_mgr = alloc_mb_mgr(0);
if (mb_mgr == NULL)