linux-gen: comp: add stub implementation

Add stub implementation supporting no compression and digest algorithms.

Signed-off-by: Dmitry Eremin-Solenikov <dmitry.ereminsolenikov@linaro.org>
Reviewed-by: Bill Fischofer <bill.fischofer@linaro.org>
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>

platform/linux-generic/Makefile.am

@@ -157,6 +157,7 @@ __LIB__libodp_linux_la_SOURCES = \
 			   odp_buffer.c \
 			   odp_chksum.c \
 			   odp_classification.c \
+			   odp_comp.c \
 			   odp_cpumask.c \
 			   odp_cpumask_task.c \
 			   odp_errno.c \

platform/linux-generic/odp_comp.c

@@ -0,0 +1,125 @@
+/* Copyright (c) 2018, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ */
+#include "config.h"
+
+#include <string.h>
+
+#include <odp/api/comp.h>
+#include <odp/api/event.h>
+#include <odp/api/packet.h>
+#include <odp/api/plat/strong_types.h>
+
+#include <odp_debug_internal.h>
+
+void odp_comp_session_param_init(odp_comp_session_param_t *param)
+{
+	memset(param, 0, sizeof(odp_comp_session_param_t));
+}
+
+odp_comp_session_t
+odp_comp_session_create(const odp_comp_session_param_t *params)
+{
+	(void)params;
+	return ODP_COMP_SESSION_INVALID;
+}
+
+int odp_comp_session_destroy(odp_comp_session_t session)
+{
+	(void)session;
+	return 0;
+}
+
+int odp_comp_capability(odp_comp_capability_t *capa)
+{
+	if (NULL == capa)
+		return -1;
+
+	/* Initialize comp capability structure */
+	memset(capa, 0, sizeof(odp_comp_capability_t));
+
+	capa->comp_algos.bit.null = 0;
+	capa->hash_algos.bit.none = 0;
+	capa->sync = ODP_SUPPORT_NO;
+	capa->async = ODP_SUPPORT_NO;
+	capa->max_sessions = 0;
+
+	return 0;
+}
+
+int
+odp_comp_alg_capability(odp_comp_alg_t comp,
+			odp_comp_alg_capability_t *capa)
+{
+	(void)capa;
+	switch (comp) {
+	default:
+		/* Error unsupported enum */
+		return -1;
+	}
+	return -1;
+}
+
+int
+odp_comp_hash_alg_capability(odp_comp_hash_alg_t hash,
+			     odp_comp_hash_alg_capability_t *capa)
+{
+	(void)capa;
+	switch (hash) {
+	default:
+		return -1;
+	}
+	return -1;
+}
+
+int odp_comp_op(const odp_packet_t pkt_in[], odp_packet_t pkt_out[],
+		int num_pkt, const odp_comp_packet_op_param_t param[])
+{
+	(void)pkt_in;
+	(void)pkt_out;
+	(void)num_pkt;
+	(void)param;
+
+	return -1;
+}
+
+int odp_comp_op_enq(const odp_packet_t pkt_in[], odp_packet_t pkt_out[],
+		    int num_pkt, const odp_comp_packet_op_param_t param[])
+{
+	(void)pkt_in;
+	(void)pkt_out;
+	(void)num_pkt;
+	(void)param;
+
+	return -1;
+}
+
+int odp_comp_result(odp_comp_packet_result_t *result,
+		    odp_packet_t packet)
+{
+	(void)result;
+	(void)packet;
+	return 0;
+}
+
+odp_packet_t odp_comp_packet_from_event(odp_event_t ev)
+{
+	/* This check not mandated by the API specification */
+	ODP_ASSERT(odp_event_type(ev) == ODP_EVENT_PACKET);
+	ODP_ASSERT(odp_event_subtype(ev) == ODP_EVENT_PACKET_COMP);
+
+	return odp_packet_from_event(ev);
+}
+
+odp_event_t odp_comp_packet_to_event(odp_packet_t pkt)
+{
+	return odp_packet_to_event(pkt);
+}
+
+/** Get printable format of odp_comp_session_t */
+uint64_t odp_comp_session_to_u64(odp_comp_session_t hdl)
+{
+	return _odp_pri(hdl);
+}