* pcap-common.h - common code for pcap and pcapng files
*/
-/*
- * 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) \
- (((((u_int)(y))&0xff)<<24) | \
- ((((u_int)(y))&0xff00)<<8) | \
- ((((u_int)(y))&0xff0000)>>8) | \
- ((((u_int)(y))>>24)&0xff))
-#define SWAPSHORT(y) \
- ((u_short)(((((u_int)(y))&0xff)<<8) | \
- ((((u_int)(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);
-
-extern void fixup_pcap_pkthdr(int linktype, struct pcap_pkthdr *hdr,
- const u_char *data);
-
extern u_int max_snaplen_for_dlt(int dlt);