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doc: announce ABI change for cryptodev config

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Add new field ff_disable in rte_cryptodev_config. This enables
applications to control the features enabled on the crypto device.

Proposed new layout:

/** Crypto device configuration structure */
struct rte_cryptodev_config {
    int socket_id;            /**< Socket to allocate resources on */
    uint16_t nb_queue_pairs;
    /**< Number of queue pairs to configure on device */
+   uint64_t ff_disable;
+   /**< Feature flags to be disabled. Only the following features are
+    * allowed to be disabled,
+    *  - RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO
+    *  - RTE_CRYPTODEV_FF_ASYMMETRIC_CRYPTO
+    *  - RTE_CRYTPODEV_FF_SECURITY
+    */
};

For eth devices, rte_eth_conf.rx_mode.offloads and
rte_eth_conf.tx_mode.offloads fields are used by applications to
control the offloads enabled on the eth device. This proposal adds a
similar ability for the crypto device.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
This commit is contained in:
Anoob Joseph 2019-03-07 10:39:50 +00:00 committed by Akhil Goyal
parent ae1374e240
commit 728762e37e
1 changed files with 14 additions and 0 deletions
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14
doc/guides/rel_notes/deprecation.rst
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@ -72,3 +72,17 @@ Deprecation Notices
* crypto/aesni_mb: the minimum supported intel-ipsec-mb library version will be * crypto/aesni_mb: the minimum supported intel-ipsec-mb library version will be
changed from 0.49.0 to 0.52.0. changed from 0.49.0 to 0.52.0.
* cryptodev: New member in ``rte_cryptodev_config`` to allow applications to
disable features supported by the crypto device. Only the following features
would be allowed to be disabled this way,
- ``RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO``
- ``RTE_CRYPTODEV_FF_ASYMMETRIC_CRYPTO``
- ``RTE_CRYPTODEV_FF_SECURITY``
Disabling unused features would facilitate efficient usage of HW/SW offload.
- Member ``uint64_t ff_disable`` in ``rte_cryptodev_config``
The field would be added in v19.08.