[dpdk-stable] patch 'cryptodev: fix ABI breakage' has been queued to stable release 18.05.1
Gujjar, Abhinandan S
abhinandan.gujjar at intel.com
Tue Jul 31 06:57:16 CEST 2018
Hi Christian,
It looks good to me.
Thanks
Abhinandan
> -----Original Message-----
> From: Christian Ehrhardt <christian.ehrhardt at canonical.com>
> Sent: Monday, July 30, 2018 9:41 PM
> To: De Lara Guarch, Pablo <pablo.de.lara.guarch at intel.com>
> Cc: Ananyev, Konstantin <konstantin.ananyev at intel.com>; Gujjar, Abhinandan S
> <abhinandan.gujjar at intel.com>; dpdk stable <stable at dpdk.org>
> Subject: patch 'cryptodev: fix ABI breakage' has been queued to stable release
> 18.05.1
>
> Hi,
>
> FYI, your patch has been queued to stable release 18.05.1
>
> Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
> It will be pushed if I get no objections before 08/01/18. So please shout if
> anyone has objections.
>
> Thanks.
>
> Christian Ehrhardt <christian.ehrhardt at canonical.com>
>
> ---
> From 58a40173c60e142288bb3ab2447b29254cc2a733 Mon Sep 17 00:00:00
> 2001
> From: Pablo de Lara <pablo.de.lara.guarch at intel.com>
> Date: Wed, 13 Jun 2018 10:36:48 +0100
> Subject: [PATCH] cryptodev: fix ABI breakage
>
> [ upstream commit ce5e6bf69eb32d5ea1d95e2a623f8f9d284a806d ]
>
> In 17.08, the crypto operation was restructured, and some reserved bytes (5)
> were added to have the mempool pointer aligned to 64 bits, since the structure
> is expected to be aligned to 64 bits, allowing future additions with no ABI
> breakage needed.
>
> In 18.05, a new 2-byte field was added, so the reserved bytes were reduced to 3.
> However, this field was added after the first 3 bytes of the structure, causing it
> to be placed in an offset of 4 bytes, and therefore, forcing the mempool pointer
> to be placed after 16 bytes, instead of a 8 bytes, causing unintentionally the ABI
> breakage.
>
> This commit fixes the breakage, by swapping the reserved bytes and the
> private_data_offset field, so the latter is aligned to 2 bytes and the offset of the
> mempool pointer returns to its original offset,
> 8 bytes.
>
> Fixes: 54c836846603 ("cryptodev: set private data for session-less mode")
>
> Reported-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
> Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com>
> Acked-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
> Acked-by: Abhinandan Gujjar <abhinandan.gujjar at intel.com>
> ---
> lib/librte_cryptodev/rte_crypto.h | 51 +++++++++++++++++++------------
> 1 file changed, 31 insertions(+), 20 deletions(-)
>
> diff --git a/lib/librte_cryptodev/rte_crypto.h b/lib/librte_cryptodev/rte_crypto.h
> index 25404264b..a16be656d 100644
> --- a/lib/librte_cryptodev/rte_crypto.h
> +++ b/lib/librte_cryptodev/rte_crypto.h
> @@ -73,26 +73,37 @@ enum rte_crypto_op_sess_type {
> * rte_cryptodev_enqueue_burst() / rte_cryptodev_dequeue_burst() .
> */
> struct rte_crypto_op {
> - uint8_t type;
> - /**< operation type */
> - uint8_t status;
> - /**<
> - * operation status - this is reset to
> - * RTE_CRYPTO_OP_STATUS_NOT_PROCESSED on allocation from
> mempool and
> - * will be set to RTE_CRYPTO_OP_STATUS_SUCCESS after crypto
> operation
> - * is successfully processed by a crypto PMD
> - */
> - uint8_t sess_type;
> - /**< operation session type */
> - uint16_t private_data_offset;
> - /**< Offset to indicate start of private data (if any). The offset
> - * is counted from the start of the rte_crypto_op including IV.
> - * The private data may be used by the application to store
> - * information which should remain untouched in the library/driver
> - */
> -
> - uint8_t reserved[3];
> - /**< Reserved bytes to fill 64 bits for future additions */
> + __extension__
> + union {
> + uint64_t raw;
> + __extension__
> + struct {
> + uint8_t type;
> + /**< operation type */
> + uint8_t status;
> + /**<
> + * operation status - this is reset to
> + * RTE_CRYPTO_OP_STATUS_NOT_PROCESSED on
> allocation
> + * from mempool and will be set to
> + * RTE_CRYPTO_OP_STATUS_SUCCESS after crypto
> operation
> + * is successfully processed by a crypto PMD
> + */
> + uint8_t sess_type;
> + /**< operation session type */
> + uint8_t reserved[3];
> + /**< Reserved bytes to fill 64 bits for
> + * future additions
> + */
> + uint16_t private_data_offset;
> + /**< Offset to indicate start of private data (if any).
> + * The offset is counted from the start of the
> + * rte_crypto_op including IV.
> + * The private data may be used by the application
> + * to store information which should remain untouched
> + * in the library/driver
> + */
> + };
> + };
> struct rte_mempool *mempool;
> /**< crypto operation mempool which operation is allocated from */
>
> --
> 2.17.1
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