net/slip/slhc.c

220  * icp and isize are the original packet.
222  * cpp is initially a pointer to icp.  If the copy is used,
227 slhc_compress(struct slcompress *comp, unsigned char *icp, int isize,
250 	ip = (struct iphdr *) icp;
267 	th = (struct tcphdr *)(icp + nlen);
466 	memcpy(cp+deltaS,icp+hlen,isize-hlen);
484 	memcpy(ocp, icp, isize);
493 slhc_uncompress(struct slcompress *comp, unsigned char *icp, int isize)
501 	unsigned char *cp = icp;
607 	len = isize - (cp - icp);
614 	memmove(icp + hdrlen, cp, len - hdrlen);
616 	cp = icp;
625 	put_unaligned(ip_fast_csum(icp, ip->ihl),
626 		      &((struct iphdr *)icp)->check);
644 slhc_remember(struct slcompress *comp, unsigned char *icp, int isize)
660 	iph = (struct iphdr *)icp;
673 	if (ip_fast_csum(icp, ihl)) {
682 	th = (struct tcphdr *)(icp + ihl * 4);
724 slhc_uncompress(struct slcompress *comp, unsigned char *icp, int isize)
730 slhc_compress(struct slcompress *comp, unsigned char *icp, int isize,
738 slhc_remember(struct slcompress *comp, unsigned char *icp, int isize)