crypto: support scatter-gather in software drivers

[dpdk.git] / drivers / crypto / snow3g / rte_snow3g_pmd.c

diff --git a/drivers/crypto/snow3g/rte_snow3g_pmd.c b/drivers/crypto/snow3g/rte_snow3g_pmd.c
index 3b4292a..9a6f16d 100644 (file)
--- a/drivers/crypto/snow3g/rte_snow3g_pmd.c
+++ b/drivers/crypto/snow3g/rte_snow3g_pmd.c
@@ -330,6 +330,21 @@ process_ops(struct rte_crypto_op **ops, struct snow3g_session *session,
        unsigned i;
        unsigned enqueued_ops, processed_ops;
 
+#ifdef RTE_LIBRTE_PMD_SNOW3G_DEBUG
+       for (i = 0; i < num_ops; i++) {
+               if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
+                               (ops[i]->sym->m_dst != NULL &&
+                               !rte_pktmbuf_is_contiguous(
+                                               ops[i]->sym->m_dst))) {
+                       SNOW3G_LOG_ERR("PMD supports only contiguous mbufs, "
+                               "op (%p) provides noncontiguous mbuf as "
+                               "source/destination buffer.\n", ops[i]);
+                       ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+                       return 0;
+               }
+       }
+#endif
+
        switch (session->op) {
        case SNOW3G_OP_ONLY_CIPHER:
                processed_ops = process_snow3g_cipher_op(ops,