1 /* 2 * Fundamental constants relating to UDP Protocol 3 * 4 * Copyright (C) 2020, Broadcom. 5 * 6 * Unless you and Broadcom execute a separate written software license 7 * agreement governing use of this software, this software is licensed to you 8 * under the terms of the GNU General Public License version 2 (the "GPL"), 9 * available at http://www.broadcom.com/licenses/GPLv2.php, with the 10 * following added to such license: 11 * 12 * As a special exception, the copyright holders of this software give you 13 * permission to link this software with independent modules, and to copy and 14 * distribute the resulting executable under terms of your choice, provided that 15 * you also meet, for each linked independent module, the terms and conditions of 16 * the license of that module. An independent module is a module which is not 17 * derived from this software. The special exception does not apply to any 18 * modifications of the software. 19 * 20 * 21 * <<Broadcom-WL-IPTag/Dual:>> 22 */ 23 24 #ifndef _bcmudp_h_ 25 #define _bcmudp_h_ 26 27 #ifndef _TYPEDEFS_H_ 28 #include <typedefs.h> 29 #endif 30 31 /* This marks the start of a packed structure section. */ 32 #include <packed_section_start.h> 33 34 /* UDP header */ 35 #define UDP_DEST_PORT_OFFSET 2 /* UDP dest port offset */ 36 #define UDP_LEN_OFFSET 4 /* UDP length offset */ 37 #define UDP_CHKSUM_OFFSET 6 /* UDP body checksum offset */ 38 39 #define UDP_HDR_LEN 8 /* UDP header length */ 40 #define UDP_PORT_LEN 2 /* UDP port length */ 41 42 /* These fields are stored in network order */ 43 BWL_PRE_PACKED_STRUCT struct bcmudp_hdr 44 { 45 uint16 src_port; /* Source Port Address */ 46 uint16 dst_port; /* Destination Port Address */ 47 uint16 len; /* Number of bytes in datagram including header */ 48 uint16 chksum; /* entire datagram checksum with pseudoheader */ 49 } BWL_POST_PACKED_STRUCT; 50 51 /* This marks the end of a packed structure section. */ 52 #include <packed_section_end.h> 53 54 #endif /* #ifndef _bcmudp_h_ */ 55