/*
* IPv6 input
- * Linux INET6 implementation
+ * Linux INET6 implementation
*
* Authors:
* Pedro Roque <roque@di.fc.ul.pt>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/sockios.h>
-#include <linux/sched.h>
#include <linux/net.h>
#include <linux/netdevice.h>
#include <linux/in6.h>
-inline int ip6_rcv_finish( struct sk_buff *skb)
+inline int ip6_rcv_finish( struct sk_buff *skb)
{
if (skb->dst == NULL)
ip6_route_input(skb);
{
struct ipv6hdr *hdr;
u32 pkt_len;
+ struct inet6_dev *idev;
- if (skb->pkt_type == PACKET_OTHERHOST)
- goto drop;
+ if (dev->nd_net != &init_net) {
+ kfree_skb(skb);
+ return 0;
+ }
+
+ if (skb->pkt_type == PACKET_OTHERHOST) {
+ kfree_skb(skb);
+ return 0;
+ }
+
+ rcu_read_lock();
- IP6_INC_STATS_BH(IPSTATS_MIB_INRECEIVES);
+ idev = __in6_dev_get(skb->dev);
+
+ IP6_INC_STATS_BH(idev, IPSTATS_MIB_INRECEIVES);
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INDISCARDS);
+ IP6_INC_STATS_BH(idev, IPSTATS_MIB_INDISCARDS);
+ rcu_read_unlock();
goto out;
}
*
* BTW, when we send a packet for our own local address on a
* non-loopback interface (e.g. ethX), it is being delivered
- * via the loopback interface (lo) here; skb->dev = &loopback_dev.
+ * via the loopback interface (lo) here; skb->dev = loopback_dev.
* It, however, should be considered as if it is being
* arrived via the sending interface (ethX), because of the
* nature of scoping architecture. --yoshfuji
*/
- IP6CB(skb)->iif = skb->dst ? ((struct rt6_info *)skb->dst)->rt6i_idev->dev->ifindex : dev->ifindex;
+ IP6CB(skb)->iif = skb->dst ? ip6_dst_idev(skb->dst)->dev->ifindex : dev->ifindex;
if (unlikely(!pskb_may_pull(skb, sizeof(*hdr))))
goto err;
- hdr = skb->nh.ipv6h;
+ hdr = ipv6_hdr(skb);
if (hdr->version != 6)
goto err;
- skb->h.raw = (u8 *)(hdr + 1);
+ skb->transport_header = skb->network_header + sizeof(*hdr);
IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr);
pkt_len = ntohs(hdr->payload_len);
/* pkt_len may be zero if Jumbo payload option is present */
if (pkt_len || hdr->nexthdr != NEXTHDR_HOP) {
- if (pkt_len + sizeof(struct ipv6hdr) > skb->len)
- goto truncated;
+ if (pkt_len + sizeof(struct ipv6hdr) > skb->len) {
+ IP6_INC_STATS_BH(idev, IPSTATS_MIB_INTRUNCATEDPKTS);
+ goto drop;
+ }
if (pskb_trim_rcsum(skb, pkt_len + sizeof(struct ipv6hdr))) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
+ IP6_INC_STATS_BH(idev, IPSTATS_MIB_INHDRERRORS);
goto drop;
}
- hdr = skb->nh.ipv6h;
+ hdr = ipv6_hdr(skb);
}
if (hdr->nexthdr == NEXTHDR_HOP) {
- if (ipv6_parse_hopopts(&skb) < 0) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
+ if (ipv6_parse_hopopts(skb) < 0) {
+ IP6_INC_STATS_BH(idev, IPSTATS_MIB_INHDRERRORS);
+ rcu_read_unlock();
return 0;
}
}
- return NF_HOOK(PF_INET6,NF_IP6_PRE_ROUTING, skb, dev, NULL, ip6_rcv_finish);
-truncated:
- IP6_INC_STATS_BH(IPSTATS_MIB_INTRUNCATEDPKTS);
+ rcu_read_unlock();
+
+ return NF_HOOK(PF_INET6, NF_INET_PRE_ROUTING, skb, dev, NULL,
+ ip6_rcv_finish);
err:
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
+ IP6_INC_STATS_BH(idev, IPSTATS_MIB_INHDRERRORS);
drop:
+ rcu_read_unlock();
kfree_skb(skb);
out:
return 0;
*/
-static inline int ip6_input_finish(struct sk_buff *skb)
+static int ip6_input_finish(struct sk_buff *skb)
{
struct inet6_protocol *ipprot;
- struct sock *raw_sk;
unsigned int nhoff;
- int nexthdr;
+ int nexthdr, raw;
u8 hash;
+ struct inet6_dev *idev;
/*
* Parse extension headers
rcu_read_lock();
resubmit:
- if (!pskb_pull(skb, skb->h.raw - skb->data))
+ idev = ip6_dst_idev(skb->dst);
+ if (!pskb_pull(skb, skb_transport_offset(skb)))
goto discard;
nhoff = IP6CB(skb)->nhoff;
- nexthdr = skb->nh.raw[nhoff];
+ nexthdr = skb_network_header(skb)[nhoff];
- raw_sk = sk_head(&raw_v6_htable[nexthdr & (MAX_INET_PROTOS - 1)]);
- if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
- raw_sk = NULL;
+ raw = raw6_local_deliver(skb, nexthdr);
hash = nexthdr & (MAX_INET_PROTOS - 1);
if ((ipprot = rcu_dereference(inet6_protos[hash])) != NULL) {
int ret;
-
+
if (ipprot->flags & INET6_PROTO_FINAL) {
- struct ipv6hdr *hdr;
+ struct ipv6hdr *hdr;
/* Free reference early: we don't need it any more,
and it may hold ip_conntrack module loaded
indefinitely. */
nf_reset(skb);
- skb_postpull_rcsum(skb, skb->nh.raw,
- skb->h.raw - skb->nh.raw);
- hdr = skb->nh.ipv6h;
+ skb_postpull_rcsum(skb, skb_network_header(skb),
+ skb_network_header_len(skb));
+ hdr = ipv6_hdr(skb);
if (ipv6_addr_is_multicast(&hdr->daddr) &&
!ipv6_chk_mcast_addr(skb->dev, &hdr->daddr,
&hdr->saddr) &&
goto discard;
}
if (!(ipprot->flags & INET6_PROTO_NOPOLICY) &&
- !xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
+ !xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
goto discard;
-
- ret = ipprot->handler(&skb);
+
+ ret = ipprot->handler(skb);
if (ret > 0)
goto resubmit;
else if (ret == 0)
- IP6_INC_STATS_BH(IPSTATS_MIB_INDELIVERS);
+ IP6_INC_STATS_BH(idev, IPSTATS_MIB_INDELIVERS);
} else {
- if (!raw_sk) {
+ if (!raw) {
if (xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INUNKNOWNPROTOS);
+ IP6_INC_STATS_BH(idev, IPSTATS_MIB_INUNKNOWNPROTOS);
icmpv6_send(skb, ICMPV6_PARAMPROB,
- ICMPV6_UNK_NEXTHDR, nhoff,
- skb->dev);
+ ICMPV6_UNK_NEXTHDR, nhoff,
+ skb->dev);
}
} else
- IP6_INC_STATS_BH(IPSTATS_MIB_INDELIVERS);
+ IP6_INC_STATS_BH(idev, IPSTATS_MIB_INDELIVERS);
kfree_skb(skb);
}
rcu_read_unlock();
return 0;
discard:
- IP6_INC_STATS_BH(IPSTATS_MIB_INDISCARDS);
+ IP6_INC_STATS_BH(idev, IPSTATS_MIB_INDISCARDS);
rcu_read_unlock();
kfree_skb(skb);
return 0;
int ip6_input(struct sk_buff *skb)
{
- return NF_HOOK(PF_INET6,NF_IP6_LOCAL_IN, skb, skb->dev, NULL, ip6_input_finish);
+ return NF_HOOK(PF_INET6, NF_INET_LOCAL_IN, skb, skb->dev, NULL,
+ ip6_input_finish);
}
int ip6_mc_input(struct sk_buff *skb)
struct ipv6hdr *hdr;
int deliver;
- IP6_INC_STATS_BH(IPSTATS_MIB_INMCASTPKTS);
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst), IPSTATS_MIB_INMCASTPKTS);
- hdr = skb->nh.ipv6h;
- deliver = likely(!(skb->dev->flags & (IFF_PROMISC|IFF_ALLMULTI))) ||
+ hdr = ipv6_hdr(skb);
+ deliver = unlikely(skb->dev->flags & (IFF_PROMISC|IFF_ALLMULTI)) ||
ipv6_chk_mcast_addr(skb->dev, &hdr->daddr, NULL);
/*
struct dst_entry *dst;
dst = skb->dst;
-
+
if (deliver) {
skb2 = skb_clone(skb, GFP_ATOMIC);
dst_output(skb2);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff