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5abcc83991
Adjust the parameter packing scheme in RSS communication to align with changes made in TF-M: 3be6c395 [1] [1]: https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/commit/?id=3be6c3954b94f000cdcf7575bd4c18f57b3492f8 Change-Id: Ief38f96ab991d1125b37adfced5ffafc39e754a0 Signed-off-by: David Vincze <david.vincze@arm.com>
86 lines
2 KiB
C
86 lines
2 KiB
C
/*
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* Copyright (c) 2022-2024, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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*/
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#include <assert.h>
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#include <string.h>
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#include <common/debug.h>
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#include "rss_comms_protocol_common.h"
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#include "rss_comms_protocol_embed.h"
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psa_status_t rss_protocol_embed_serialize_msg(psa_handle_t handle,
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int16_t type,
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const psa_invec *in_vec,
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uint8_t in_len,
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const psa_outvec *out_vec,
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uint8_t out_len,
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struct rss_embed_msg_t *msg,
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size_t *msg_len)
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{
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uint32_t payload_size = 0;
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uint32_t i;
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assert(msg != NULL);
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assert(msg_len != NULL);
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assert(in_vec != NULL);
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msg->ctrl_param = PARAM_PACK(type, in_len, out_len);
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msg->handle = handle;
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/* Fill msg iovec lengths */
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for (i = 0U; i < in_len; ++i) {
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msg->io_size[i] = in_vec[i].len;
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}
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for (i = 0U; i < out_len; ++i) {
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msg->io_size[in_len + i] = out_vec[i].len;
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}
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for (i = 0U; i < in_len; ++i) {
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if (in_vec[i].len > sizeof(msg->trailer) - payload_size) {
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return PSA_ERROR_INVALID_ARGUMENT;
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}
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memcpy(msg->trailer + payload_size,
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in_vec[i].base,
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in_vec[i].len);
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payload_size += in_vec[i].len;
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}
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/* Output the actual size of the message, to optimize sending */
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*msg_len = sizeof(*msg) - sizeof(msg->trailer) + payload_size;
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return PSA_SUCCESS;
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}
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psa_status_t rss_protocol_embed_deserialize_reply(psa_outvec *out_vec,
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uint8_t out_len,
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psa_status_t *return_val,
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const struct rss_embed_reply_t *reply,
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size_t reply_size)
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{
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uint32_t payload_offset = 0;
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uint32_t i;
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assert(reply != NULL);
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assert(return_val != NULL);
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for (i = 0U; i < out_len; ++i) {
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if ((sizeof(*reply) - sizeof(reply->trailer) + payload_offset)
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> reply_size) {
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return PSA_ERROR_INVALID_ARGUMENT;
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}
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memcpy(out_vec[i].base,
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reply->trailer + payload_offset,
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reply->out_size[i]);
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out_vec[i].len = reply->out_size[i];
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payload_offset += reply->out_size[i];
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}
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*return_val = reply->return_val;
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return PSA_SUCCESS;
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}
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