From ebee5594a35e2af743ff03cde7d4bac67ac772f2 Mon Sep 17 00:00:00 2001 From: Pablo de Lara Date: Sat, 9 Jul 2016 17:35:58 +0100 Subject: [PATCH] crypto/kasumi: restrict cipher bit-level operations KASUMI PMD only supports bit-level cipher operations when destination buffer is different from the source (out of place operations). This commit adds a check in the code to prevent the user from trying to perform in-place bit-level ciphering. Fixes: 2773c86d061a ("crypto/kasumi: add driver for KASUMI library") Signed-off-by: Pablo de Lara --- doc/guides/cryptodevs/kasumi.rst | 3 +++ drivers/crypto/kasumi/rte_kasumi_pmd.c | 9 ++++++--- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/doc/guides/cryptodevs/kasumi.rst b/doc/guides/cryptodevs/kasumi.rst index d6b3a97582..7346b21784 100644 --- a/doc/guides/cryptodevs/kasumi.rst +++ b/doc/guides/cryptodevs/kasumi.rst @@ -52,6 +52,9 @@ Limitations * Chained mbufs are not supported. * KASUMI(F9) supported only if hash offset field is byte-aligned. +* In-place bit-level operations for KASUMI(F8) are not supported + (if length and/or offset of data to be ciphered is not byte-aligned). + Installation ------------ diff --git a/drivers/crypto/kasumi/rte_kasumi_pmd.c b/drivers/crypto/kasumi/rte_kasumi_pmd.c index 1cdbc063df..4e21743425 100644 --- a/drivers/crypto/kasumi/rte_kasumi_pmd.c +++ b/drivers/crypto/kasumi/rte_kasumi_pmd.c @@ -243,9 +243,12 @@ process_kasumi_cipher_op_bit(struct rte_crypto_op *op, offset_in_bits = op->sym->cipher.data.offset; src = rte_pktmbuf_mtod(op->sym->m_src, uint8_t *); - dst = op->sym->m_dst ? - rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *) : - rte_pktmbuf_mtod(op->sym->m_src, uint8_t *); + if (op->sym->m_dst == NULL) { + op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS; + KASUMI_LOG_ERR("bit-level in-place not supported\n"); + return 0; + } + dst = rte_pktmbuf_mtod(op->sym->m_dst, uint8_t *); IV = *((uint64_t *)(op->sym->cipher.iv.data)); length_in_bits = op->sym->cipher.data.length; -- 2.20.1