44 void ip_options_build(struct sk_buff *skb, struct ip_options *opt,  in ip_options_build()  argument
49 	memcpy(&(IPCB(skb)->opt), opt, sizeof(struct ip_options));  in ip_options_build()
50 	memcpy(iph + sizeof(struct iphdr), opt->__data, opt->optlen);  in ip_options_build()
51 	opt = &(IPCB(skb)->opt);  in ip_options_build()
53 	if (opt->srr)  in ip_options_build()
54 		memcpy(iph + opt->srr + iph[opt->srr + 1] - 4, &daddr, 4);  in ip_options_build()
56 	if (opt->rr_needaddr)  in ip_options_build()
57 		ip_rt_get_source(iph + opt->rr + iph[opt->rr + 2] - 5, skb, rt);  in ip_options_build()
58 	if (opt->ts_needaddr)  in ip_options_build()
59 		ip_rt_get_source(iph + opt->ts + iph[opt->ts + 2] - 9, skb, rt);  in ip_options_build()
60 	if (opt->ts_needtime) {  in ip_options_build()
64 		memcpy(iph + opt->ts + iph[opt->ts + 2] - 5, &midtime, 4);  in ip_options_build()
198 	struct ip_options *opt = &(IPCB(skb)->opt);  in ip_options_fragment()  local
199 	int  l = opt->optlen;  in ip_options_fragment()
219 	opt->ts = 0;  in ip_options_fragment()
220 	opt->rr = 0;  in ip_options_fragment()
221 	opt->rr_needaddr = 0;  in ip_options_fragment()
222 	opt->ts_needaddr = 0;  in ip_options_fragment()
223 	opt->ts_needtime = 0;  in ip_options_fragment()
242 			 struct ip_options *opt, struct sk_buff *skb,  in __ip_options_compile()  argument
256 		optptr = opt->__data;  in __ip_options_compile()
259 	for (l = opt->optlen; l > 0; ) {  in __ip_options_compile()
265 					opt->is_changed = 1;  in __ip_options_compile()
295 			if (opt->srr) {  in __ip_options_compile()
304 				memcpy(&opt->faddr, &optptr[3], 4);  in __ip_options_compile()
308 			opt->is_strictroute = (optptr[0] == IPOPT_SSRR);  in __ip_options_compile()
309 			opt->srr = optptr - iph;  in __ip_options_compile()
312 			if (opt->rr) {  in __ip_options_compile()
332 					opt->is_changed = 1;  in __ip_options_compile()
335 				opt->rr_needaddr = 1;  in __ip_options_compile()
337 			opt->rr = optptr - iph;  in __ip_options_compile()
340 			if (opt->ts) {  in __ip_options_compile()
362 					opt->ts_needtime = 1;  in __ip_options_compile()
375 					opt->ts_needaddr = 1;  in __ip_options_compile()
376 					opt->ts_needtime = 1;  in __ip_options_compile()
392 					opt->ts_needtime = 1;  in __ip_options_compile()
407 					opt->is_changed = 1;  in __ip_options_compile()
417 					opt->is_changed = 1;  in __ip_options_compile()
420 			opt->ts = optptr - iph;  in __ip_options_compile()
428 				opt->router_alert = optptr - iph;  in __ip_options_compile()
431 			if ((!skb && !ns_capable(net->user_ns, CAP_NET_RAW)) || opt->cipso) {  in __ip_options_compile()
435 			opt->cipso = optptr - iph;  in __ip_options_compile()
466 		       struct ip_options *opt, struct sk_buff *skb)  in ip_options_compile()  argument
471 	ret = __ip_options_compile(net, opt, skb, &info);  in ip_options_compile()
482 void ip_options_undo(struct ip_options *opt)  in ip_options_undo()  argument
484 	if (opt->srr) {  in ip_options_undo()
485 		unsigned char *optptr = opt->__data + opt->srr - sizeof(struct iphdr);  in ip_options_undo()
488 		memcpy(optptr + 3, &opt->faddr, 4);  in ip_options_undo()
490 	if (opt->rr_needaddr) {  in ip_options_undo()
491 		unsigned char *optptr = opt->__data + opt->rr - sizeof(struct iphdr);  in ip_options_undo()
496 	if (opt->ts) {  in ip_options_undo()
497 		unsigned char *optptr = opt->__data + opt->ts - sizeof(struct iphdr);  in ip_options_undo()
499 		if (opt->ts_needtime) {  in ip_options_undo()
505 		if (opt->ts_needaddr) {  in ip_options_undo()
515 	struct ip_options_rcu *opt;  in ip_options_get()  local
517 	opt = kzalloc(sizeof(struct ip_options_rcu) + ((optlen + 3) & ~3),  in ip_options_get()
519 	if (!opt)  in ip_options_get()
521 	if (optlen && copy_from_sockptr(opt->opt.__data, data, optlen)) {  in ip_options_get()
522 		kfree(opt);  in ip_options_get()
527 		opt->opt.__data[optlen++] = IPOPT_END;  in ip_options_get()
528 	opt->opt.optlen = optlen;  in ip_options_get()
529 	if (optlen && ip_options_compile(net, &opt->opt, NULL)) {  in ip_options_get()
530 		kfree(opt);  in ip_options_get()
534 	*optp = opt;  in ip_options_get()
540 	struct   ip_options *opt	= &(IPCB(skb)->opt);  in ip_forward_options()  local
545 	if (opt->rr_needaddr) {  in ip_forward_options()
546 		optptr = (unsigned char *)raw + opt->rr;  in ip_forward_options()
548 		opt->is_changed = 1;  in ip_forward_options()
550 	if (opt->srr_is_hit) {  in ip_forward_options()
553 		optptr = raw + opt->srr;  in ip_forward_options()
561 			if (memcmp(&opt->nexthop, &optptr[srrptr-1], 4) == 0)  in ip_forward_options()
565 			opt->is_changed = 1;  in ip_forward_options()
566 			ip_hdr(skb)->daddr = opt->nexthop;  in ip_forward_options()
573 		if (opt->ts_needaddr) {  in ip_forward_options()
574 			optptr = raw + opt->ts;  in ip_forward_options()
576 			opt->is_changed = 1;  in ip_forward_options()
579 	if (opt->is_changed) {  in ip_forward_options()
580 		opt->is_changed = 0;  in ip_forward_options()
587 	struct ip_options *opt = &(IPCB(skb)->opt);  in ip_options_rcv_srr()  local
591 	unsigned char *optptr = skb_network_header(skb) + opt->srr;  in ip_options_rcv_srr()
603 		if (!opt->is_strictroute)  in ip_options_rcv_srr()
613 			icmp_send(skb, ICMP_PARAMETERPROB, 0, htonl((opt->srr+2)<<24));  in ip_options_rcv_srr()
632 		opt->is_changed = 1;  in ip_options_rcv_srr()
635 		opt->srr_is_hit = 1;  in ip_options_rcv_srr()
636 		opt->nexthop = nexthop;  in ip_options_rcv_srr()
637 		opt->is_changed = 1;  in ip_options_rcv_srr()