1 /* Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved. 2 * 3 * Redistribution and use in source and binary forms, with or without modification, 4 * are permitted provided that the following conditions are met: 5 * 6 * 1. Redistributions of source code must retain the above copyright notice, this list of 7 * conditions and the following disclaimer. 8 * 9 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 10 * of conditions and the following disclaimer in the documentation and/or other materials 11 * provided with the distribution. 12 * 13 * 3. Neither the name of the copyright holder nor the names of its contributors may be used 14 * to endorse or promote products derived from this software without specific prior written 15 * permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 19 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 24 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 27 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef LWIP_HDR_UDP_TRANSMIT_H 31 #define LWIP_HDR_UDP_TRANSMIT_H 32 33 #include "lwip/opt.h" 34 35 #if LWIP_ENABLE_DISTRIBUTED_NET 36 37 typedef struct udp_data { 38 char dest_addr[IP4_MAX_ADDR_LEN]; 39 u32_t dest_port; 40 char payload[]; 41 } udp_data; 42 43 #if LWIP_USE_GET_HOST_BY_NAME_EXTERNAL 44 45 #include "lwip/distributed_net/distributed_net.h" 46 #include "lwip/sockets.h" 47 48 #define MAX_UDP_PAYLOAD_LEN 1024 49 50 #define MAX_IOV_NUM 32 51 52 #define UDP_PAYLOAD_LEN(send_len) ((send_len) - (ssize_t)sizeof(udp_data)) 53 54 ssize_t udp_transmit_sendto(int sock, const void *buf, size_t buf_len, const struct sockaddr_in *dest_addr); 55 56 ssize_t udp_transmit_sendmsg(int sock, const struct msghdr *hdr); 57 58 #endif /* LWIP_USE_GET_HOST_BY_NAME_EXTERNAL */ 59 60 #endif /* LWIP_ENABLE_DISTRIBUTED_NET */ 61 62 #endif /* LWIP_HDR_UDP_TRANSMIT_H */ 63