| |
| /* |
| * We use the "receiver-makes-right" approach to byte order, |
| * because time is at a premium when we are writing the file. |
| * In other words, the pcap_file_header and pcap_pkthdr, |
| * records are written in host byte order. |
| * Note that the bytes of packet data are written out in the order in |
| * which they were received, so multi-byte fields in packets are not |
| * written in host byte order, they're written in whatever order the |
| * sending machine put them in. |
| * |
| * ntoh[ls] aren't sufficient because we might need to swap on a big-endian |
| * machine (if the file was written in little-end order). |
| */ |
| #define SWAPLONG(y) \ |
| ((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff)) |
| #define SWAPSHORT(y) \ |
| ( (((y)&0xff)<<8) | ((u_short)((y)&0xff00)>>8) ) |
| |
| extern int dlt_to_linktype(int dlt); |
| |
| extern int linktype_to_dlt(int linktype); |
| |
| extern void swap_pseudo_headers(int linktype, struct pcap_pkthdr *hdr, |
| u_char *data); |