166 	struct ip_tunnel *t;  in ipgre_tunnel_lookup()  local
168 	for (t = tunnels_r_l[h0^h1]; t; t = t->next) {  in ipgre_tunnel_lookup()
169 		if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr) {  in ipgre_tunnel_lookup()
170 			if (t->parms.i_key == key && (t->dev->flags&IFF_UP))  in ipgre_tunnel_lookup()
171 				return t;  in ipgre_tunnel_lookup()
174 	for (t = tunnels_r[h0^h1]; t; t = t->next) {  in ipgre_tunnel_lookup()
175 		if (remote == t->parms.iph.daddr) {  in ipgre_tunnel_lookup()
176 			if (t->parms.i_key == key && (t->dev->flags&IFF_UP))  in ipgre_tunnel_lookup()
177 				return t;  in ipgre_tunnel_lookup()
180 	for (t = tunnels_l[h1]; t; t = t->next) {  in ipgre_tunnel_lookup()
181 		if (local == t->parms.iph.saddr ||  in ipgre_tunnel_lookup()
182 		     (local == t->parms.iph.daddr && MULTICAST(local))) {  in ipgre_tunnel_lookup()
183 			if (t->parms.i_key == key && (t->dev->flags&IFF_UP))  in ipgre_tunnel_lookup()
184 				return t;  in ipgre_tunnel_lookup()
187 	for (t = tunnels_wc[h1]; t; t = t->next) {  in ipgre_tunnel_lookup()
188 		if (t->parms.i_key == key && (t->dev->flags&IFF_UP))  in ipgre_tunnel_lookup()
189 			return t;  in ipgre_tunnel_lookup()
196 static struct ip_tunnel **ipgre_bucket(struct ip_tunnel *t)  in ipgre_bucket()  argument
198 	u32 remote = t->parms.iph.daddr;  in ipgre_bucket()
199 	u32 local = t->parms.iph.saddr;  in ipgre_bucket()
200 	u32 key = t->parms.i_key;  in ipgre_bucket()
214 static void ipgre_tunnel_link(struct ip_tunnel *t)  in ipgre_tunnel_link()  argument
216 	struct ip_tunnel **tp = ipgre_bucket(t);  in ipgre_tunnel_link()
218 	t->next = *tp;  in ipgre_tunnel_link()
220 	*tp = t;  in ipgre_tunnel_link()
224 static void ipgre_tunnel_unlink(struct ip_tunnel *t)  in ipgre_tunnel_unlink()  argument
228 	for (tp = ipgre_bucket(t); *tp; tp = &(*tp)->next) {  in ipgre_tunnel_unlink()
229 		if (t == *tp) {  in ipgre_tunnel_unlink()
231 			*tp = t->next;  in ipgre_tunnel_unlink()
243 	struct ip_tunnel *t, **tp, *nt;  in ipgre_tunnel_locate()  local
254 	for (tp = &tunnels[prio][h]; (t = *tp) != NULL; tp = &t->next) {  in ipgre_tunnel_locate()
255 		if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr) {  in ipgre_tunnel_locate()
256 			if (key == t->parms.i_key)  in ipgre_tunnel_locate()
257 				return t;  in ipgre_tunnel_locate()
264 	dev = kmalloc(sizeof(*dev) + sizeof(*t), GFP_KERNEL);  in ipgre_tunnel_locate()
269 	memset(dev, 0, sizeof(*dev) + sizeof(*t));  in ipgre_tunnel_locate()
339 	struct ip_tunnel *t;  in ipgre_err()  local
386 …t = ipgre_tunnel_lookup(iph->daddr, iph->saddr, (flags&GRE_KEY) ? *(((u32*)p) + (grehlen>>2) - 1) …  in ipgre_err()
387 	if (t == NULL || t->parms.iph.daddr == 0 || MULTICAST(t->parms.iph.daddr))  in ipgre_err()
390 	if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED)  in ipgre_err()
393 	if (jiffies - t->err_time < IPTUNNEL_ERR_TIMEO)  in ipgre_err()
394 		t->err_count++;  in ipgre_err()
396 		t->err_count = 1;  in ipgre_err()
397 	t->err_time = jiffies;  in ipgre_err()
523 		struct ip_tunnel *t = (struct ip_tunnel*)skb2->dev->priv;  in ipgre_err()
524 		if (t->parms.iph.ttl) {  in ipgre_err()
894 	struct ip_tunnel *t;  in ipgre_tunnel_ioctl()  local
900 		t = NULL;  in ipgre_tunnel_ioctl()
906 			t = ipgre_tunnel_locate(&p, 0);  in ipgre_tunnel_ioctl()
908 		if (t == NULL)  in ipgre_tunnel_ioctl()
909 			t = (struct ip_tunnel*)dev->priv;  in ipgre_tunnel_ioctl()
910 		memcpy(&p, &t->parms, sizeof(p));  in ipgre_tunnel_ioctl()
938 		t = ipgre_tunnel_locate(&p, cmd == SIOCADDTUNNEL);  in ipgre_tunnel_ioctl()
941 		    t != &ipgre_fb_tunnel) {  in ipgre_tunnel_ioctl()
942 			if (t != NULL) {  in ipgre_tunnel_ioctl()
943 				if (t->dev != dev) {  in ipgre_tunnel_ioctl()
950 				t = (struct ip_tunnel*)dev->priv;  in ipgre_tunnel_ioctl()
961 				ipgre_tunnel_unlink(t);  in ipgre_tunnel_ioctl()
962 				t->parms.iph.saddr = p.iph.saddr;  in ipgre_tunnel_ioctl()
963 				t->parms.iph.daddr = p.iph.daddr;  in ipgre_tunnel_ioctl()
964 				t->parms.i_key = p.i_key;  in ipgre_tunnel_ioctl()
965 				t->parms.o_key = p.o_key;  in ipgre_tunnel_ioctl()
968 				ipgre_tunnel_link(t);  in ipgre_tunnel_ioctl()
973 		if (t) {  in ipgre_tunnel_ioctl()
976 				t->parms.iph.ttl = p.iph.ttl;  in ipgre_tunnel_ioctl()
977 				t->parms.iph.tos = p.iph.tos;  in ipgre_tunnel_ioctl()
978 				t->parms.iph.frag_off = p.iph.frag_off;  in ipgre_tunnel_ioctl()
980 			if (copy_to_user(ifr->ifr_ifru.ifru_data, &t->parms, sizeof(p)))  in ipgre_tunnel_ioctl()
996 			if ((t = ipgre_tunnel_locate(&p, 0)) == NULL)  in ipgre_tunnel_ioctl()
999 			if (t == &ipgre_fb_tunnel)  in ipgre_tunnel_ioctl()
1001 			dev = t->dev;  in ipgre_tunnel_ioctl()
1062 	struct ip_tunnel *t = (struct ip_tunnel*)dev->priv;  in ipgre_header()  local
1063 	struct iphdr *iph = (struct iphdr *)skb_push(skb, t->hlen);  in ipgre_header()
1066 	memcpy(iph, &t->parms.iph, sizeof(struct iphdr));  in ipgre_header()
1067 	p[0]		= t->parms.o_flags;  in ipgre_header()
1079 		return t->hlen;  in ipgre_header()
1082 		return t->hlen;  in ipgre_header()
1084 	return -t->hlen;  in ipgre_header()
1089 	struct ip_tunnel *t = (struct ip_tunnel*)dev->priv;  in ipgre_open()  local
1092 	if (MULTICAST(t->parms.iph.daddr)) {  in ipgre_open()
1094 		if (ip_route_output(&rt, t->parms.iph.daddr,  in ipgre_open()
1095 				    t->parms.iph.saddr, RT_TOS(t->parms.iph.tos),   in ipgre_open()
1096 				    t->parms.link)) {  in ipgre_open()
1106 		t->mlink = dev->ifindex;  in ipgre_open()
1107 		ip_mc_inc_group(__in_dev_get(dev), t->parms.iph.daddr);  in ipgre_open()
1114 	struct ip_tunnel *t = (struct ip_tunnel*)dev->priv;  in ipgre_close()  local
1115 	if (MULTICAST(t->parms.iph.daddr) && t->mlink) {  in ipgre_close()
1116 		struct in_device *in_dev = inetdev_by_index(t->mlink);  in ipgre_close()
1118 			ip_mc_dec_group(in_dev, t->parms.iph.daddr);  in ipgre_close()
1130 	struct ip_tunnel *t = (struct ip_tunnel*)dev->priv;  in ipgre_tunnel_init_gen()  local
1145 	memcpy(dev->dev_addr, &t->parms.iph.saddr, 4);  in ipgre_tunnel_init_gen()
1146 	memcpy(dev->broadcast, &t->parms.iph.daddr, 4);  in ipgre_tunnel_init_gen()