1214455Srpaulo 2214455Srpaulo/* 3214455Srpaulo * We use the "receiver-makes-right" approach to byte order, 4214455Srpaulo * because time is at a premium when we are writing the file. 5214455Srpaulo * In other words, the pcap_file_header and pcap_pkthdr, 6214455Srpaulo * records are written in host byte order. 7214455Srpaulo * Note that the bytes of packet data are written out in the order in 8214455Srpaulo * which they were received, so multi-byte fields in packets are not 9214455Srpaulo * written in host byte order, they're written in whatever order the 10214455Srpaulo * sending machine put them in. 11214455Srpaulo * 12214455Srpaulo * ntoh[ls] aren't sufficient because we might need to swap on a big-endian 13214455Srpaulo * machine (if the file was written in little-end order). 14214455Srpaulo */ 15214455Srpaulo#define SWAPLONG(y) \ 16214455Srpaulo((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff)) 17214455Srpaulo#define SWAPSHORT(y) \ 18214455Srpaulo ( (((y)&0xff)<<8) | ((u_short)((y)&0xff00)>>8) ) 19214455Srpaulo 20214455Srpauloextern int dlt_to_linktype(int dlt); 21214455Srpaulo 22214455Srpauloextern int linktype_to_dlt(int linktype); 23214455Srpaulo 24214455Srpauloextern void swap_linux_usb_header(const struct pcap_pkthdr *hdr, u_char *buf, 25214455Srpaulo int header_len_64_bytes); 26