crypto/cnxk: fix bus error on RSA verify

While creating RSA session, private key length is not being
calculated properly. This is causing bus error on RSA verify.
This patch fix the issue with length calculation.

Fixes: 5a3513caeb455 ("crypto/cnxk: add asymmetric session")
Cc: stable@dpdk.org
Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Acked-by: Anoob Joseph <anoobj@marvell.com>

diff --git a/drivers/crypto/cnxk/cnxk_ae.h b/drivers/crypto/cnxk/cnxk_ae.h
index 00dc75e..6222171 100644 (file)
--- a/drivers/crypto/cnxk/cnxk_ae.h
+++ b/drivers/crypto/cnxk/cnxk_ae.h
@@ -82,15 +82,15 @@ cnxk_ae_fill_rsa_params(struct cnxk_ae_sess *sess,
        struct rte_crypto_rsa_xform *rsa = &sess->rsa_ctx;
        size_t mod_len = xfrm_rsa->n.length;
        size_t exp_len = xfrm_rsa->e.length;
-       size_t len = (mod_len / 2);
        uint64_t total_size;
+       size_t len = 0;
 
        if (qt.p.length != 0 && qt.p.data == NULL)
                return -EINVAL;
 
        /* Make sure key length used is not more than mod_len/2 */
        if (qt.p.data != NULL)
-               len = RTE_MIN(len, qt.p.length);
+               len = (((mod_len / 2) < qt.p.length) ? 0 : qt.p.length);
 
        /* Total size required for RSA key params(n,e,(q,dQ,p,dP,qInv)) */
        total_size = mod_len + exp_len + 5 * len;