net/ipv4/ip_tunnel.c

97 		if (local != t->parms.iph.saddr ||
98 		    remote != t->parms.iph.daddr ||
102 		if (!ip_tunnel_key_match(&t->parms, flags, key))
105 		if (READ_ONCE(t->parms.link) == link)
111 		if (remote != t->parms.iph.daddr ||
112 		    t->parms.iph.saddr != 0 ||
116 		if (!ip_tunnel_key_match(&t->parms, flags, key))
119 		if (READ_ONCE(t->parms.link) == link)
129 		if ((local != t->parms.iph.saddr || t->parms.iph.daddr != 0) &&
130 		    (local != t->parms.iph.daddr || !ipv4_is_multicast(local)))
136 		if (!ip_tunnel_key_match(&t->parms, flags, key))
139 		if (READ_ONCE(t->parms.link) == link)
146 		if ((!(flags & TUNNEL_NO_KEY) && t->parms.i_key != key) ||
147 		    t->parms.iph.saddr != 0 ||
148 		    t->parms.iph.daddr != 0 ||
152 		if (READ_ONCE(t->parms.link) == link)
174 				    struct ip_tunnel_parm *parms)
178 	__be32 i_key = parms->i_key;
180 	if (parms->iph.daddr && !ipv4_is_multicast(parms->iph.daddr))
181 		remote = parms->iph.daddr;
185 	if (!(parms->i_flags & TUNNEL_KEY) && (parms->i_flags & VTI_ISVTI))
194 	struct hlist_head *head = ip_bucket(itn, &t->parms);
209 					struct ip_tunnel_parm *parms,
212 	__be32 remote = parms->iph.daddr;
213 	__be32 local = parms->iph.saddr;
214 	__be32 key = parms->i_key;
215 	__be16 flags = parms->i_flags;
216 	int link = parms->link;
218 	struct hlist_head *head = ip_bucket(itn, parms);
221 		if (local == t->parms.iph.saddr &&
222 		    remote == t->parms.iph.daddr &&
223 		    link == READ_ONCE(t->parms.link) &&
225 		    ip_tunnel_key_match(&t->parms, flags, key))
233 					     struct ip_tunnel_parm *parms)
241 	if (parms->name[0]) {
242 		if (!dev_valid_name(parms->name))
244 		strscpy(name, parms->name, IFNAMSIZ);
263 	tunnel->parms = *parms;
287 	iph = &tunnel->parms.iph;
295 				    iph->saddr, tunnel->parms.o_key,
297 				    tunnel->parms.link, tunnel->fwmark, 0, 0);
310 	if (!tdev && tunnel->parms.link)
311 		tdev = __dev_get_by_index(tunnel->net, tunnel->parms.link);
329 					  struct ip_tunnel_parm *parms)
337 	dev = __ip_tunnel_create(net, itn->rtnl_link_ops, parms);
389 	if ((!(tpi->flags&TUNNEL_CSUM) &&  (tunnel->parms.i_flags&TUNNEL_CSUM)) ||
390 	     ((tpi->flags&TUNNEL_CSUM) && !(tunnel->parms.i_flags&TUNNEL_CSUM))) {
396 	if (tunnel->parms.i_flags&TUNNEL_SEQ) {
548 		daddr = md ? dst : tunnel->parms.iph.daddr;
699 	connected = (tunnel->parms.iph.daddr != 0);
775 			    tunnel->parms.o_key, RT_TOS(tos),
776 			    dev_net(dev), READ_ONCE(tunnel->parms.link),
879 	t->parms.iph.saddr = p->iph.saddr;
880 	t->parms.iph.daddr = p->iph.daddr;
881 	t->parms.i_key = p->i_key;
882 	t->parms.o_key = p->o_key;
889 	t->parms.iph.ttl = p->iph.ttl;
890 	t->parms.iph.tos = p->iph.tos;
891 	t->parms.iph.frag_off = p->iph.frag_off;
893 	if (t->parms.link != p->link || t->fwmark != fwmark) {
896 		WRITE_ONCE(t->parms.link, p->link);
920 		memcpy(p, &t->parms, sizeof(*p));
1088 	return READ_ONCE(tunnel->parms.link);
1096 	struct ip_tunnel_parm parms;
1112 	memset(&parms, 0, sizeof(parms));
1114 		strscpy(parms.name, devname, IFNAMSIZ);
1117 	itn->fb_tunnel_dev = __ip_tunnel_create(net, ops, &parms);
1194 	nt->parms = *p;
1268 	struct iphdr *iph = &tunnel->parms.iph;
1292 	strcpy(tunnel->parms.name, dev->name);