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qat: add out-of-place symmetric operations

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This patch adds out-of-place operations to qat symmetric crypto PMD,
i.e. the result of the operation can be written to the destination buffer
instead of overwriting the source buffer as done in "in-place" operation.
Both buffers can be of different sizes.
Previously the qat PMD assumed that m_src and m_dst in rte_crypto_sym_op
were identical.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
Acked-by: John Griffin <john.griffin@intel.com>
This commit is contained in:
Arek Kusztal 2016-03-29 15:14:41 +01:00 committed by Thomas Monjalon
parent 2f481bda80
commit ceb1ccd5d5
2 changed files with 13 additions and 10 deletions
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1
doc/guides/cryptodevs/qat.rst
View File

@ -62,7 +62,6 @@ Limitations
* Chained mbufs are not supported.
* Hash only is not supported except Snow3G UIA2.
* Cipher only is not supported except Snow3G UEA2.
* Only in-place is currently supported (destination address is the same as source address).
* Only supports the session-oriented API implementation (session-less APIs are not supported).
* Not performance tuned.
* Snow3g(UEA2) supported only if cipher length, cipher offset fields are byte-aligned.

22
drivers/crypto/qat/qat_crypto.c
View File

@ -692,17 +692,21 @@ qat_write_hw_desc_entry(struct rte_crypto_op *op, uint8_t *out_msg)
*qat_req = ctx->fw_req;
qat_req->comn_mid.opaque_data = (uint64_t)(uintptr_t)op;
/*
* The following code assumes:
* - single entry buffer.
* - always in place.
*/
qat_req->comn_mid.dst_length =
qat_req->comn_mid.src_length =
rte_pktmbuf_data_len(op->sym->m_src);
qat_req->comn_mid.src_length =
rte_pktmbuf_data_len(op->sym->m_src);
qat_req->comn_mid.dest_data_addr =
qat_req->comn_mid.src_data_addr =
rte_pktmbuf_mtophys(op->sym->m_src);
qat_req->comn_mid.src_data_addr =
rte_pktmbuf_mtophys(op->sym->m_src);
if (unlikely(op->sym->m_dst != NULL)) {
qat_req->comn_mid.dest_data_addr =
rte_pktmbuf_mtophys(op->sym->m_dst);
qat_req->comn_mid.dst_length =
rte_pktmbuf_data_len(op->sym->m_dst);
}
cipher_param = (void *)&qat_req->serv_specif_rqpars;
auth_param = (void *)((uint8_t *)cipher_param + sizeof(*cipher_param));