248 bool cookie_timestamp_decode(struct tcp_options_received *tcp_opt)  in cookie_timestamp_decode()  argument
251 	u32 options = tcp_opt->rcv_tsecr;  in cookie_timestamp_decode()
253 	if (!tcp_opt->saw_tstamp)  {  in cookie_timestamp_decode()
254 		tcp_clear_options(tcp_opt);  in cookie_timestamp_decode()
261 	tcp_opt->sack_ok = (options & TS_OPT_SACK) ? TCP_SACK_SEEN : 0;  in cookie_timestamp_decode()
263 	if (tcp_opt->sack_ok && !sysctl_tcp_sack)  in cookie_timestamp_decode()
269 	tcp_opt->wscale_ok = 1;  in cookie_timestamp_decode()
270 	tcp_opt->snd_wscale = options & TS_OPT_WSCALE_MASK;  in cookie_timestamp_decode()
276 bool cookie_ecn_ok(const struct tcp_options_received *tcp_opt,  in cookie_ecn_ok()  argument
279 	bool ecn_ok = tcp_opt->rcv_tsecr & TS_OPT_ECN;  in cookie_ecn_ok()
294 	struct tcp_options_received tcp_opt;  in cookie_v4_check()  local
322 	memset(&tcp_opt, 0, sizeof(tcp_opt));  in cookie_v4_check()
323 	tcp_parse_options(skb, &tcp_opt, 0, NULL);  in cookie_v4_check()
325 	if (!cookie_timestamp_decode(&tcp_opt))  in cookie_v4_check()
343 	ireq->snd_wscale	= tcp_opt.snd_wscale;  in cookie_v4_check()
344 	ireq->sack_ok		= tcp_opt.sack_ok;  in cookie_v4_check()
345 	ireq->wscale_ok		= tcp_opt.wscale_ok;  in cookie_v4_check()
346 	ireq->tstamp_ok		= tcp_opt.saw_tstamp;  in cookie_v4_check()
347 	req->ts_recent		= tcp_opt.saw_tstamp ? tcp_opt.rcv_tsval : 0;  in cookie_v4_check()
348 	treq->snt_synack	= tcp_opt.saw_tstamp ? tcp_opt.rcv_tsecr : 0;  in cookie_v4_check()
392 	ireq->ecn_ok = cookie_ecn_ok(&tcp_opt, sock_net(sk), &rt->dst);  in cookie_v4_check()