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/*
*
* Copyright (c) 2018 Huawei Technologies Co.,Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __STACKX_TCP_OPT_H__
#define __STACKX_TCP_OPT_H__
#include "spl_opt.h"
/* TCP Options flags */
#define TF_ACK_DELAY ((u32_t)0x01U) /* Delayed ACK. */
#define TF_ACK_NOW ((u32_t)0x02U) /* Immediate ACK. */
#define TF_WINDOWSCALING ((u32_t)0x40U) /* Window scaling option enabled */
#define TF_INFR ((u32_t)0x04U) /* In fast recovery. */
#define TF_TIMESTAMP ((u32_t)0x08U) /* Timestamp option enabled */
#define TF_RXCLOSED ((u32_t)0x10U) /* rx closed by tcp_shutdown */
#define TF_FIN ((u32_t)0x20U) /* Connection was closed locally (FIN segment enqueued). */
#define TF_NODELAY ((u32_t)0x100U) /* Disable Nagle algorithm */
#define TF_NAGLEMEMERR ((u32_t)0x80U)
/* TCP segment Options flags */
#define TF_SEG_OPTS_MSS (u8_t)0x01U /* Include MSS option. */
#define TF_SEG_OPTS_TS (u8_t)0x02U /* Include timestamp option. */
#define TF_SEG_OPTS_WS (u8_t)0x08U /* Include window scaling option. */
#define STACKX_TCP_OPT_LENGTH(flags) \
(flags & TF_SEG_OPTS_MSS ? 4 : 0) + \
(flags & TF_SEG_OPTS_TS ? 12 : 0) + \
(flags & TF_SEG_OPTS_WS ? 4 : 0)
#endif
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