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crypto/qat: optimise check for chained mbufs

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To detect if sgl, use nb_segs > 1, instead of checking for next pointer,
as nb_segs is in first cache-line while next is in second cache-line.

Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>
Acked-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
This commit is contained in:
Fiona Trahe 2020-03-11 13:26:07 +01:00 committed by Akhil Goyal
parent 5390f304b7
commit 603ad3ae91
1 changed files with 2 additions and 1 deletions
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3
drivers/crypto/qat/qat_sym.c
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@ -428,7 +428,8 @@ qat_sym_build_request(void *in_op, uint8_t *out_msg,
min_ofs = op->sym->aead.data.offset;
}
if (op->sym->m_src->next || (op->sym->m_dst && op->sym->m_dst->next))
if (op->sym->m_src->nb_segs > 1 ||
(op->sym->m_dst && op->sym->m_dst->nb_segs > 1))
do_sgl = 1;
/* adjust for chain case */