net/ipv4/cipso_ipv4.c

1548 	unsigned char *opt = *option;
1558 	opt_len = opt[1];
1565 	doi_def = cipso_v4_doi_search(get_unaligned_be32(&opt[2]));
1572 	tag = opt + opt_iter;
1685 	*option = opt + err_offset;
1719 	struct ip_options *opt = (struct ip_options *)optbuf;
1730 	memset(opt, 0, sizeof(struct ip_options));
1731 	opt->optlen = ip_hdr(skb)->ihl*4 - sizeof(struct iphdr);
1733 	res = __ip_options_compile(dev_net(skb->dev), opt, skb, NULL);
1740 		__icmp_send(skb, ICMP_DEST_UNREACH, ICMP_NET_ANO, 0, opt);
1742 		__icmp_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_ANO, 0, opt);
1837 	struct ip_options_rcu *old, *opt = NULL;
1868 	opt = kzalloc(sizeof(*opt) + opt_len, GFP_ATOMIC);
1869 	if (!opt) {
1873 	memcpy(opt->opt.__data, buf, buf_len);
1874 	opt->opt.optlen = opt_len;
1875 	opt->opt.cipso = sizeof(struct iphdr);
1885 			sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
1886 		sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
1889 	rcu_assign_pointer(sk_inet->inet_opt, opt);
1897 	kfree(opt);
1921 	struct ip_options_rcu *opt = NULL;
1944 	opt = kzalloc(sizeof(*opt) + opt_len, GFP_ATOMIC);
1945 	if (!opt) {
1949 	memcpy(opt->opt.__data, buf, buf_len);
1950 	opt->opt.optlen = opt_len;
1951 	opt->opt.cipso = sizeof(struct iphdr);
1956 	opt = xchg((__force struct ip_options_rcu **)&req_inet->ireq_opt, opt);
1957 	if (opt)
1958 		kfree_rcu(opt, rcu);
1964 	kfree(opt);
1980 	struct ip_options_rcu *opt = rcu_dereference_protected(*opt_ptr, 1);
1983 	if (!opt || opt->opt.cipso == 0)
1985 	if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
1992 		cipso_off = opt->opt.cipso - sizeof(struct iphdr);
1993 		cipso_ptr = &opt->opt.__data[cipso_off];
1996 		if (opt->opt.srr > opt->opt.cipso)
1997 			opt->opt.srr -= cipso_len;
1998 		if (opt->opt.rr > opt->opt.cipso)
1999 			opt->opt.rr -= cipso_len;
2000 		if (opt->opt.ts > opt->opt.cipso)
2001 			opt->opt.ts -= cipso_len;
2002 		if (opt->opt.router_alert > opt->opt.cipso)
2003 			opt->opt.router_alert -= cipso_len;
2004 		opt->opt.cipso = 0;
2007 			opt->opt.optlen - cipso_off - cipso_len);
2016 		while (iter < opt->opt.optlen)
2017 			if (opt->opt.__data[iter] != IPOPT_NOP) {
2018 				iter += opt->opt.__data[iter + 1];
2022 		hdr_delta = opt->opt.optlen;
2023 		opt->opt.optlen = (optlen_new + 3) & ~3;
2024 		hdr_delta -= opt->opt.optlen;
2029 		hdr_delta = opt->opt.optlen;
2030 		kfree_rcu(opt, rcu);
2136 	struct ip_options_rcu *opt;
2140 	opt = rcu_dereference(inet_sk(sk)->inet_opt);
2141 	if (opt && opt->opt.cipso)
2142 		res = cipso_v4_getattr(opt->opt.__data +
2143 						opt->opt.cipso -
2167 	struct ip_options *opt = &IPCB(skb)->opt;
2185 	len_delta = opt_len - opt->optlen;
2194 		/* we assume that the header + opt->optlen have already been
2203 		memset(iph + 1, IPOPT_NOP, opt->optlen);
2207 	if (opt->optlen > 0)
2208 		memset(opt, 0, sizeof(*opt));
2209 	opt->optlen = opt_len;
2210 	opt->cipso = sizeof(struct iphdr);
2211 	opt->is_changed = 1;
2243 	struct ip_options *opt = &IPCB(skb)->opt;
2246 	if (opt->cipso == 0)
2259 	cipso_ptr = (unsigned char *)iph + opt->cipso;
2261 	opt->cipso = 0;
2262 	opt->is_changed = 1;