nexmon – Blame information for rev 1

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1 office 1  
2 /*
3 * We use the "receiver-makes-right" approach to byte order,
4 * because time is at a premium when we are writing the file.
5 * In other words, the pcap_file_header and pcap_pkthdr,
6 * records are written in host byte order.
7 * Note that the bytes of packet data are written out in the order in
8 * which they were received, so multi-byte fields in packets are not
9 * written in host byte order, they're written in whatever order the
10 * sending machine put them in.
11 *
12 * ntoh[ls] aren't sufficient because we might need to swap on a big-endian
13 * machine (if the file was written in little-end order).
14 */
15 #define SWAPLONG(y) \
16 ((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff))
17 #define SWAPSHORT(y) \
18 ( (((y)&0xff)<<8) | ((u_short)((y)&0xff00)>>8) )
19  
20 extern int dlt_to_linktype(int dlt);
21  
22 extern int linktype_to_dlt(int linktype);
23  
24 extern void swap_pseudo_headers(int linktype, struct pcap_pkthdr *hdr,
25 u_char *data);