}
for (t = tunnels_l[h1]; t; t = t->next) {
if (local == t->parms.iph.saddr ||
- (local == t->parms.iph.daddr && MULTICAST(local))) {
+ (local == t->parms.iph.daddr &&
+ ipv4_is_multicast(local))) {
if (t->parms.i_key == key && (t->dev->flags&IFF_UP))
return t;
}
if (local)
prio |= 1;
- if (remote && !MULTICAST(remote)) {
+ if (remote && !ipv4_is_multicast(remote)) {
prio |= 2;
h ^= HASH(remote);
}
if (parms->name[0])
strlcpy(name, parms->name, IFNAMSIZ);
- else {
- int i;
- for (i=1; i<100; i++) {
- sprintf(name, "gre%d", i);
- if (__dev_get_by_name(name) == NULL)
- break;
- }
- if (i==100)
- goto failed;
- }
+ else
+ sprintf(name, "gre%%d");
dev = alloc_netdev(sizeof(*t), name, ipgre_tunnel_setup);
if (!dev)
read_lock(&ipgre_lock);
t = ipgre_tunnel_lookup(iph->daddr, iph->saddr, (flags&GRE_KEY) ? *(((__be32*)p) + (grehlen>>2) - 1) : 0);
- if (t == NULL || t->parms.iph.daddr == 0 || MULTICAST(t->parms.iph.daddr))
+ if (t == NULL || t->parms.iph.daddr == 0 ||
+ ipv4_is_multicast(t->parms.iph.daddr))
goto out;
if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED)
fl.fl4_dst = eiph->saddr;
fl.fl4_tos = RT_TOS(eiph->tos);
fl.proto = IPPROTO_GRE;
- if (ip_route_output_key(&rt, &fl)) {
+ if (ip_route_output_key(&init_net, &rt, &fl)) {
kfree_skb(skb2);
return;
}
fl.fl4_dst = eiph->daddr;
fl.fl4_src = eiph->saddr;
fl.fl4_tos = eiph->tos;
- if (ip_route_output_key(&rt, &fl) ||
+ if (ip_route_output_key(&init_net, &rt, &fl) ||
rt->u.dst.dev->type != ARPHRD_IPGRE) {
ip_rt_put(rt);
kfree_skb(skb2);
offset += 4;
}
- skb_reset_mac_header(skb);
+ skb->mac_header = skb->network_header;
__pskb_pull(skb, offset);
skb_reset_network_header(skb);
skb_postpull_rcsum(skb, skb_transport_header(skb), offset);
skb->pkt_type = PACKET_HOST;
#ifdef CONFIG_NET_IPGRE_BROADCAST
- if (MULTICAST(iph->daddr)) {
+ if (ipv4_is_multicast(iph->daddr)) {
/* Looped back packet, drop it! */
if (((struct rtable*)skb->dst)->fl.iif == 0)
goto drop;
struct rtable *rt; /* Route to the other host */
struct net_device *tdev; /* Device to other host */
struct iphdr *iph; /* Our new IP header */
- int max_headroom; /* The extra header space needed */
+ unsigned int max_headroom; /* The extra header space needed */
int gre_hlen;
__be32 dst;
int mtu;
goto tx_error;
}
- if (dev->hard_header) {
+ if (dev->header_ops) {
gre_hlen = 0;
tiph = (struct iphdr*)skb->data;
} else {
.saddr = tiph->saddr,
.tos = RT_TOS(tos) } },
.proto = IPPROTO_GRE };
- if (ip_route_output_key(&rt, &fl)) {
+ if (ip_route_output_key(&init_net, &rt, &fl)) {
tunnel->stat.tx_carrier_errors++;
goto tx_error;
}
struct rt6_info *rt6 = (struct rt6_info*)skb->dst;
if (rt6 && mtu < dst_mtu(skb->dst) && mtu >= IPV6_MIN_MTU) {
- if ((tunnel->parms.iph.daddr && !MULTICAST(tunnel->parms.iph.daddr)) ||
+ if ((tunnel->parms.iph.daddr &&
+ !ipv4_is_multicast(tunnel->parms.iph.daddr)) ||
rt6->rt6i_dst.plen == 128) {
rt6->rt6i_flags |= RTF_MODIFIED;
skb->dst->metrics[RTAX_MTU-1] = mtu;
return 0;
}
+static void ipgre_tunnel_bind_dev(struct net_device *dev)
+{
+ struct net_device *tdev = NULL;
+ struct ip_tunnel *tunnel;
+ struct iphdr *iph;
+ int hlen = LL_MAX_HEADER;
+ int mtu = ETH_DATA_LEN;
+ int addend = sizeof(struct iphdr) + 4;
+
+ tunnel = netdev_priv(dev);
+ iph = &tunnel->parms.iph;
+
+ /* Guess output device to choose reasonable mtu and hard_header_len */
+
+ if (iph->daddr) {
+ struct flowi fl = { .oif = tunnel->parms.link,
+ .nl_u = { .ip4_u =
+ { .daddr = iph->daddr,
+ .saddr = iph->saddr,
+ .tos = RT_TOS(iph->tos) } },
+ .proto = IPPROTO_GRE };
+ struct rtable *rt;
+ if (!ip_route_output_key(&init_net, &rt, &fl)) {
+ tdev = rt->u.dst.dev;
+ ip_rt_put(rt);
+ }
+ dev->flags |= IFF_POINTOPOINT;
+ }
+
+ if (!tdev && tunnel->parms.link)
+ tdev = __dev_get_by_index(&init_net, tunnel->parms.link);
+
+ if (tdev) {
+ hlen = tdev->hard_header_len;
+ mtu = tdev->mtu;
+ }
+ dev->iflink = tunnel->parms.link;
+
+ /* Precalculate GRE options length */
+ if (tunnel->parms.o_flags&(GRE_CSUM|GRE_KEY|GRE_SEQ)) {
+ if (tunnel->parms.o_flags&GRE_CSUM)
+ addend += 4;
+ if (tunnel->parms.o_flags&GRE_KEY)
+ addend += 4;
+ if (tunnel->parms.o_flags&GRE_SEQ)
+ addend += 4;
+ }
+ dev->hard_header_len = hlen + addend;
+ dev->mtu = mtu - addend;
+ tunnel->hlen = addend;
+
+}
+
static int
ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
{
t = netdev_priv(dev);
- if (MULTICAST(p.iph.daddr))
+ if (ipv4_is_multicast(p.iph.daddr))
nflags = IFF_BROADCAST;
else if (p.iph.daddr)
nflags = IFF_POINTOPOINT;
t->parms.iph.ttl = p.iph.ttl;
t->parms.iph.tos = p.iph.tos;
t->parms.iph.frag_off = p.iph.frag_off;
+ if (t->parms.link != p.link) {
+ t->parms.link = p.link;
+ ipgre_tunnel_bind_dev(dev);
+ netdev_state_change(dev);
+ }
}
if (copy_to_user(ifr->ifr_ifru.ifru_data, &t->parms, sizeof(p)))
err = -EFAULT;
return 0;
}
-#ifdef CONFIG_NET_IPGRE_BROADCAST
/* Nice toy. Unfortunately, useless in real life :-)
It allows to construct virtual multiprotocol broadcast "LAN"
over the Internet, provided multicast routing is tuned.
*/
-static int ipgre_header(struct sk_buff *skb, struct net_device *dev, unsigned short type,
- void *daddr, void *saddr, unsigned len)
+static int ipgre_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type,
+ const void *daddr, const void *saddr, unsigned len)
{
struct ip_tunnel *t = netdev_priv(dev);
struct iphdr *iph = (struct iphdr *)skb_push(skb, t->hlen);
memcpy(&iph->daddr, daddr, 4);
return t->hlen;
}
- if (iph->daddr && !MULTICAST(iph->daddr))
+ if (iph->daddr && !ipv4_is_multicast(iph->daddr))
return t->hlen;
return -t->hlen;
}
+static int ipgre_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+{
+ struct iphdr *iph = (struct iphdr*) skb_mac_header(skb);
+ memcpy(haddr, &iph->saddr, 4);
+ return 4;
+}
+
+static const struct header_ops ipgre_header_ops = {
+ .create = ipgre_header,
+ .parse = ipgre_header_parse,
+};
+
+#ifdef CONFIG_NET_IPGRE_BROADCAST
static int ipgre_open(struct net_device *dev)
{
struct ip_tunnel *t = netdev_priv(dev);
- if (MULTICAST(t->parms.iph.daddr)) {
+ if (ipv4_is_multicast(t->parms.iph.daddr)) {
struct flowi fl = { .oif = t->parms.link,
.nl_u = { .ip4_u =
{ .daddr = t->parms.iph.daddr,
.tos = RT_TOS(t->parms.iph.tos) } },
.proto = IPPROTO_GRE };
struct rtable *rt;
- if (ip_route_output_key(&rt, &fl))
+ if (ip_route_output_key(&init_net, &rt, &fl))
return -EADDRNOTAVAIL;
dev = rt->u.dst.dev;
ip_rt_put(rt);
static int ipgre_close(struct net_device *dev)
{
struct ip_tunnel *t = netdev_priv(dev);
- if (MULTICAST(t->parms.iph.daddr) && t->mlink) {
- struct in_device *in_dev = inetdev_by_index(t->mlink);
+ if (ipv4_is_multicast(t->parms.iph.daddr) && t->mlink) {
+ struct in_device *in_dev;
+ in_dev = inetdev_by_index(dev->nd_net, t->mlink);
if (in_dev) {
ip_mc_dec_group(in_dev, t->parms.iph.daddr);
in_dev_put(in_dev);
static void ipgre_tunnel_setup(struct net_device *dev)
{
- SET_MODULE_OWNER(dev);
dev->uninit = ipgre_tunnel_uninit;
dev->destructor = free_netdev;
dev->hard_start_xmit = ipgre_tunnel_xmit;
static int ipgre_tunnel_init(struct net_device *dev)
{
- struct net_device *tdev = NULL;
struct ip_tunnel *tunnel;
struct iphdr *iph;
- int hlen = LL_MAX_HEADER;
- int mtu = ETH_DATA_LEN;
- int addend = sizeof(struct iphdr) + 4;
tunnel = netdev_priv(dev);
iph = &tunnel->parms.iph;
memcpy(dev->dev_addr, &tunnel->parms.iph.saddr, 4);
memcpy(dev->broadcast, &tunnel->parms.iph.daddr, 4);
- /* Guess output device to choose reasonable mtu and hard_header_len */
+ ipgre_tunnel_bind_dev(dev);
if (iph->daddr) {
- struct flowi fl = { .oif = tunnel->parms.link,
- .nl_u = { .ip4_u =
- { .daddr = iph->daddr,
- .saddr = iph->saddr,
- .tos = RT_TOS(iph->tos) } },
- .proto = IPPROTO_GRE };
- struct rtable *rt;
- if (!ip_route_output_key(&rt, &fl)) {
- tdev = rt->u.dst.dev;
- ip_rt_put(rt);
- }
-
- dev->flags |= IFF_POINTOPOINT;
-
#ifdef CONFIG_NET_IPGRE_BROADCAST
- if (MULTICAST(iph->daddr)) {
+ if (ipv4_is_multicast(iph->daddr)) {
if (!iph->saddr)
return -EINVAL;
dev->flags = IFF_BROADCAST;
- dev->hard_header = ipgre_header;
+ dev->header_ops = &ipgre_header_ops;
dev->open = ipgre_open;
dev->stop = ipgre_close;
}
#endif
- }
-
- if (!tdev && tunnel->parms.link)
- tdev = __dev_get_by_index(tunnel->parms.link);
-
- if (tdev) {
- hlen = tdev->hard_header_len;
- mtu = tdev->mtu;
- }
- dev->iflink = tunnel->parms.link;
+ } else
+ dev->header_ops = &ipgre_header_ops;
- /* Precalculate GRE options length */
- if (tunnel->parms.o_flags&(GRE_CSUM|GRE_KEY|GRE_SEQ)) {
- if (tunnel->parms.o_flags&GRE_CSUM)
- addend += 4;
- if (tunnel->parms.o_flags&GRE_KEY)
- addend += 4;
- if (tunnel->parms.o_flags&GRE_SEQ)
- addend += 4;
- }
- dev->hard_header_len = hlen + addend;
- dev->mtu = mtu - addend;
- tunnel->hlen = addend;
return 0;
}
git.samba.org / sfrench / cifs-2.6.git / blobdiff