diff options
Diffstat (limited to 'stacks/lwip_stack/lwip_src/common/stackx_tcp_opt.h')
| -rw-r--r-- | stacks/lwip_stack/lwip_src/common/stackx_tcp_opt.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/stacks/lwip_stack/lwip_src/common/stackx_tcp_opt.h b/stacks/lwip_stack/lwip_src/common/stackx_tcp_opt.h new file mode 100644 index 0000000..cac3dcb --- /dev/null +++ b/stacks/lwip_stack/lwip_src/common/stackx_tcp_opt.h @@ -0,0 +1,42 @@ +/* +* +* 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 |