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-rw-r--r--net/ipv6/Kconfig29
-rw-r--r--net/ipv6/Makefile3
-rw-r--r--net/ipv6/addrconf.c18
-rw-r--r--net/ipv6/af_inet6.c2
-rw-r--r--net/ipv6/fib6_rules.c11
-rw-r--r--net/ipv6/ip6_fib.c9
-rw-r--r--net/ipv6/ip6_flowlabel.c24
-rw-r--r--net/ipv6/ip6_tunnel.c19
-rw-r--r--net/ipv6/ndisc.c3
-rw-r--r--net/ipv6/netfilter/Kconfig2
-rw-r--r--net/ipv6/netfilter/ip6_queue.c7
-rw-r--r--net/ipv6/netfilter/ip6_tables.c47
-rw-r--r--net/ipv6/netfilter/ip6t_ah.c7
-rw-r--r--net/ipv6/netfilter/ip6t_frag.c7
-rw-r--r--net/ipv6/netfilter/ip6t_hbh.c7
-rw-r--r--net/ipv6/netfilter/ip6t_rt.c7
-rw-r--r--net/ipv6/raw.c17
-rw-r--r--net/ipv6/route.c81
-rw-r--r--net/ipv6/sit.c5
-rw-r--r--net/ipv6/tcp_ipv6.c13
-rw-r--r--net/ipv6/udp.c7
-rw-r--r--net/ipv6/xfrm6_policy.c14
-rw-r--r--net/ipv6/xfrm6_tunnel.c4
23 files changed, 238 insertions, 105 deletions
diff --git a/net/ipv6/Kconfig b/net/ipv6/Kconfig
index a460e8132b4..6e48f52e197 100644
--- a/net/ipv6/Kconfig
+++ b/net/ipv6/Kconfig
@@ -153,6 +153,19 @@ config INET6_XFRM_MODE_ROUTEOPTIMIZATION
---help---
Support for MIPv6 route optimization mode.
+config IPV6_SIT
+ tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)"
+ depends on IPV6
+ default y
+ ---help---
+ Tunneling means encapsulating data of one protocol type within
+ another protocol and sending it over a channel that understands the
+ encapsulating protocol. This driver implements encapsulation of IPv6
+ into IPv4 packets. This is useful if you want to connect two IPv6
+ networks over an IPv4-only path.
+
+ Saying M here will produce a module called sit.ko. If unsure, say Y.
+
config IPV6_TUNNEL
tristate "IPv6: IPv6-in-IPv6 tunnel"
select INET6_TUNNEL
@@ -162,9 +175,16 @@ config IPV6_TUNNEL
If unsure, say N.
+config IPV6_MULTIPLE_TABLES
+ bool "IPv6: Multiple Routing Tables"
+ depends on IPV6 && EXPERIMENTAL
+ select FIB_RULES
+ ---help---
+ Support multiple routing tables.
+
config IPV6_SUBTREES
bool "IPv6: source address based routing"
- depends on IPV6 && EXPERIMENTAL
+ depends on IPV6_MULTIPLE_TABLES
---help---
Enable routing by source address or prefix.
@@ -176,13 +196,6 @@ config IPV6_SUBTREES
If unsure, say N.
-config IPV6_MULTIPLE_TABLES
- bool "IPv6: Multiple Routing Tables"
- depends on IPV6 && EXPERIMENTAL
- select FIB_RULES
- ---help---
- Support multiple routing tables.
-
config IPV6_ROUTE_FWMARK
bool "IPv6: use netfilter MARK value as routing key"
depends on IPV6_MULTIPLE_TABLES && NETFILTER
diff --git a/net/ipv6/Makefile b/net/ipv6/Makefile
index 87274e47fe3..addcc011bc0 100644
--- a/net/ipv6/Makefile
+++ b/net/ipv6/Makefile
@@ -4,7 +4,7 @@
obj-$(CONFIG_IPV6) += ipv6.o
-ipv6-objs := af_inet6.o anycast.o ip6_output.o ip6_input.o addrconf.o sit.o \
+ipv6-objs := af_inet6.o anycast.o ip6_output.o ip6_input.o addrconf.o \
route.o ip6_fib.o ipv6_sockglue.o ndisc.o udp.o raw.o \
protocol.o icmp.o mcast.o reassembly.o tcp_ipv6.o \
exthdrs.o sysctl_net_ipv6.o datagram.o proc.o \
@@ -29,6 +29,7 @@ obj-$(CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION) += xfrm6_mode_ro.o
obj-$(CONFIG_INET6_XFRM_MODE_BEET) += xfrm6_mode_beet.o
obj-$(CONFIG_NETFILTER) += netfilter/
+obj-$(CONFIG_IPV6_SIT) += sit.o
obj-$(CONFIG_IPV6_TUNNEL) += ip6_tunnel.o
obj-y += exthdrs_core.o
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e03c33b2465..b312a5f7a75 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -396,8 +396,10 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
ndev->regen_timer.data = (unsigned long) ndev;
if ((dev->flags&IFF_LOOPBACK) ||
dev->type == ARPHRD_TUNNEL ||
- dev->type == ARPHRD_NONE ||
- dev->type == ARPHRD_SIT) {
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
+ dev->type == ARPHRD_SIT ||
+#endif
+ dev->type == ARPHRD_NONE) {
printk(KERN_INFO
"%s: Disabled Privacy Extensions\n",
dev->name);
@@ -1546,8 +1548,10 @@ addrconf_prefix_route(struct in6_addr *pfx, int plen, struct net_device *dev,
This thing is done here expecting that the whole
class of non-broadcast devices need not cloning.
*/
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
if (dev->type == ARPHRD_SIT && (dev->flags & IFF_POINTOPOINT))
cfg.fc_flags |= RTF_NONEXTHOP;
+#endif
ip6_route_add(&cfg);
}
@@ -1569,6 +1573,7 @@ static void addrconf_add_mroute(struct net_device *dev)
ip6_route_add(&cfg);
}
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
static void sit_route_add(struct net_device *dev)
{
struct fib6_config cfg = {
@@ -1582,6 +1587,7 @@ static void sit_route_add(struct net_device *dev)
/* prefix length - 96 bits "::d.d.d.d" */
ip6_route_add(&cfg);
}
+#endif
static void addrconf_add_lroute(struct net_device *dev)
{
@@ -1852,6 +1858,7 @@ int addrconf_set_dstaddr(void __user *arg)
if (dev == NULL)
goto err_exit;
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
if (dev->type == ARPHRD_SIT) {
struct ifreq ifr;
mm_segment_t oldfs;
@@ -1881,6 +1888,7 @@ int addrconf_set_dstaddr(void __user *arg)
err = dev_open(dev);
}
}
+#endif
err_exit:
rtnl_unlock();
@@ -2010,6 +2018,7 @@ int addrconf_del_ifaddr(void __user *arg)
return err;
}
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
static void sit_add_v4_addrs(struct inet6_dev *idev)
{
struct inet6_ifaddr * ifp;
@@ -2078,6 +2087,7 @@ static void sit_add_v4_addrs(struct inet6_dev *idev)
}
}
}
+#endif
static void init_loopback(struct net_device *dev)
{
@@ -2141,6 +2151,7 @@ static void addrconf_dev_config(struct net_device *dev)
addrconf_add_linklocal(idev, &addr);
}
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
static void addrconf_sit_config(struct net_device *dev)
{
struct inet6_dev *idev;
@@ -2166,6 +2177,7 @@ static void addrconf_sit_config(struct net_device *dev)
} else
sit_route_add(dev);
}
+#endif
static inline int
ipv6_inherit_linklocal(struct inet6_dev *idev, struct net_device *link_dev)
@@ -2260,9 +2272,11 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
}
switch(dev->type) {
+#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
case ARPHRD_SIT:
addrconf_sit_config(dev);
break;
+#endif
case ARPHRD_TUNNEL6:
addrconf_ip6_tnl_config(dev);
break;
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index e94eccb9970..858cae29581 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -850,7 +850,6 @@ static int __init inet6_init(void)
err = addrconf_init();
if (err)
goto addrconf_fail;
- sit_init();
/* Init v6 extension headers. */
ipv6_rthdr_init();
@@ -927,7 +926,6 @@ static void __exit inet6_exit(void)
mip6_fini();
#endif
/* Cleanup code parts. */
- sit_cleanup();
ip6_flowlabel_cleanup();
addrconf_cleanup();
ip6_route_cleanup();
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index d8c1057e8b0..1896ecb5289 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -117,12 +117,15 @@ static int fib6_rule_match(struct fib_rule *rule, struct flowi *fl, int flags)
{
struct fib6_rule *r = (struct fib6_rule *) rule;
- if (!ipv6_prefix_equal(&fl->fl6_dst, &r->dst.addr, r->dst.plen))
+ if (r->dst.plen &&
+ !ipv6_prefix_equal(&fl->fl6_dst, &r->dst.addr, r->dst.plen))
return 0;
- if ((flags & RT6_LOOKUP_F_HAS_SADDR) &&
- !ipv6_prefix_equal(&fl->fl6_src, &r->src.addr, r->src.plen))
- return 0;
+ if (r->src.plen) {
+ if (!(flags & RT6_LOOKUP_F_HAS_SADDR) ||
+ !ipv6_prefix_equal(&fl->fl6_src, &r->src.addr, r->src.plen))
+ return 0;
+ }
if (r->tclass && r->tclass != ((ntohl(fl->fl6_flowlabel) >> 20) & 0xff))
return 0;
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 8fcae7a6510..f98ca30d7c1 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -169,7 +169,6 @@ static __inline__ void rt6_release(struct rt6_info *rt)
static struct fib6_table fib6_main_tbl = {
.tb6_id = RT6_TABLE_MAIN,
- .tb6_lock = RW_LOCK_UNLOCKED,
.tb6_root = {
.leaf = &ip6_null_entry,
.fn_flags = RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO,
@@ -187,6 +186,12 @@ static void fib6_link_table(struct fib6_table *tb)
{
unsigned int h;
+ /*
+ * Initialize table lock at a single place to give lockdep a key,
+ * tables aren't visible prior to being linked to the list.
+ */
+ rwlock_init(&tb->tb6_lock);
+
h = tb->tb6_id & (FIB_TABLE_HASHSZ - 1);
/*
@@ -199,7 +204,6 @@ static void fib6_link_table(struct fib6_table *tb)
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
static struct fib6_table fib6_local_tbl = {
.tb6_id = RT6_TABLE_LOCAL,
- .tb6_lock = RW_LOCK_UNLOCKED,
.tb6_root = {
.leaf = &ip6_null_entry,
.fn_flags = RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO,
@@ -213,7 +217,6 @@ static struct fib6_table *fib6_alloc_table(u32 id)
table = kzalloc(sizeof(*table), GFP_ATOMIC);
if (table != NULL) {
table->tb6_id = id;
- table->tb6_lock = RW_LOCK_UNLOCKED;
table->tb6_root.leaf = &ip6_null_entry;
table->tb6_root.fn_flags = RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO;
}
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 1d672b0547f..6d4533b58dc 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -330,8 +330,10 @@ fl_create(struct in6_flowlabel_req *freq, char __user *optval, int optlen, int *
fl->share = freq->flr_share;
addr_type = ipv6_addr_type(&freq->flr_dst);
if ((addr_type&IPV6_ADDR_MAPPED)
- || addr_type == IPV6_ADDR_ANY)
+ || addr_type == IPV6_ADDR_ANY) {
+ err = -EINVAL;
goto done;
+ }
ipv6_addr_copy(&fl->dst, &freq->flr_dst);
atomic_set(&fl->users, 1);
switch (fl->share) {
@@ -587,6 +589,8 @@ static struct ip6_flowlabel *ip6fl_get_next(struct seq_file *seq, struct ip6_flo
while (!fl) {
if (++state->bucket <= FL_HASH_MASK)
fl = fl_ht[state->bucket];
+ else
+ break;
}
return fl;
}
@@ -623,9 +627,13 @@ static void ip6fl_seq_stop(struct seq_file *seq, void *v)
read_unlock_bh(&ip6_fl_lock);
}
-static void ip6fl_fl_seq_show(struct seq_file *seq, struct ip6_flowlabel *fl)
+static int ip6fl_seq_show(struct seq_file *seq, void *v)
{
- while(fl) {
+ if (v == SEQ_START_TOKEN)
+ seq_printf(seq, "%-5s %-1s %-6s %-6s %-6s %-8s %-32s %s\n",
+ "Label", "S", "Owner", "Users", "Linger", "Expires", "Dst", "Opt");
+ else {
+ struct ip6_flowlabel *fl = v;
seq_printf(seq,
"%05X %-1d %-6d %-6d %-6ld %-8ld " NIP6_SEQFMT " %-4d\n",
(unsigned)ntohl(fl->label),
@@ -636,17 +644,7 @@ static void ip6fl_fl_seq_show(struct seq_file *seq, struct ip6_flowlabel *fl)
(long)(fl->expires - jiffies)/HZ,
NIP6(fl->dst),
fl->opt ? fl->opt->opt_nflen : 0);
- fl = fl->next;
}
-}
-
-static int ip6fl_seq_show(struct seq_file *seq, void *v)
-{
- if (v == SEQ_START_TOKEN)
- seq_printf(seq, "%-5s %-1s %-6s %-6s %-6s %-8s %-32s %s\n",
- "Label", "S", "Owner", "Users", "Linger", "Expires", "Dst", "Opt");
- else
- ip6fl_fl_seq_show(seq, v);
return 0;
}
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 84d7ebdb9d2..b9f40290d12 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -542,6 +542,7 @@ ip6ip6_rcv(struct sk_buff *skb)
skb->dev = t->dev;
dst_release(skb->dst);
skb->dst = NULL;
+ nf_reset(skb);
if (t->parms.flags & IP6_TNL_F_RCV_DSCP_COPY)
ipv6_copy_dscp(ipv6h, skb->nh.ipv6h);
ip6ip6_ecn_decapsulate(ipv6h, skb);
@@ -1149,6 +1150,20 @@ fail:
return err;
}
+static void __exit ip6ip6_destroy_tunnels(void)
+{
+ int h;
+ struct ip6_tnl *t;
+
+ for (h = 0; h < HASH_SIZE; h++) {
+ while ((t = tnls_r_l[h]) != NULL)
+ unregister_netdevice(t->dev);
+ }
+
+ t = tnls_wc[0];
+ unregister_netdevice(t->dev);
+}
+
/**
* ip6_tunnel_cleanup - free resources and unregister protocol
**/
@@ -1158,7 +1173,9 @@ static void __exit ip6_tunnel_cleanup(void)
if (xfrm6_tunnel_deregister(&ip6ip6_handler))
printk(KERN_INFO "ip6ip6 close: can't deregister tunnel\n");
- unregister_netdev(ip6ip6_fb_tnl_dev);
+ rtnl_lock();
+ ip6ip6_destroy_tunnels();
+ rtnl_unlock();
}
module_init(ip6_tunnel_init);
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 0304b5fe8d6..73eb8c33e9f 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -967,8 +967,6 @@ static void ndisc_recv_na(struct sk_buff *skb)
ipv6_devconf.forwarding && ipv6_devconf.proxy_ndp &&
pneigh_lookup(&nd_tbl, &msg->target, dev, 0)) {
/* XXX: idev->cnf.prixy_ndp */
- WARN_ON(skb->dst != NULL &&
- ((struct rt6_info *)skb->dst)->rt6i_idev);
goto out;
}
@@ -1744,6 +1742,7 @@ int __init ndisc_init(struct net_proto_family *ops)
void ndisc_cleanup(void)
{
+ unregister_netdevice_notifier(&ndisc_netdev_notifier);
#ifdef CONFIG_SYSCTL
neigh_sysctl_unregister(&nd_tbl.parms);
#endif
diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig
index 4bc4e5b3379..d7c45a9c15f 100644
--- a/net/ipv6/netfilter/Kconfig
+++ b/net/ipv6/netfilter/Kconfig
@@ -40,7 +40,7 @@ config IP6_NF_QUEUE
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_IPTABLES
- tristate "IP6 tables support (required for filtering/masq/NAT)"
+ tristate "IP6 tables support (required for filtering)"
depends on NETFILTER_XTABLES
help
ip6tables is a general, extensible packet identification framework.
diff --git a/net/ipv6/netfilter/ip6_queue.c b/net/ipv6/netfilter/ip6_queue.c
index 9510c24ca8d..9fec832ee08 100644
--- a/net/ipv6/netfilter/ip6_queue.c
+++ b/net/ipv6/netfilter/ip6_queue.c
@@ -349,9 +349,10 @@ ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
if (v->data_len < sizeof(*user_iph))
return 0;
diff = v->data_len - e->skb->len;
- if (diff < 0)
- skb_trim(e->skb, v->data_len);
- else if (diff > 0) {
+ if (diff < 0) {
+ if (pskb_trim(e->skb, v->data_len))
+ return -ENOMEM;
+ } else if (diff > 0) {
if (v->data_len > 0xFFFF)
return -EINVAL;
if (diff > skb_tailroom(e->skb)) {
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 4ab368fa0b8..204e02162d4 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -111,7 +111,7 @@ ip6_packet_match(const struct sk_buff *skb,
const char *outdev,
const struct ip6t_ip6 *ip6info,
unsigned int *protoff,
- int *fragoff)
+ int *fragoff, int *hotdrop)
{
size_t i;
unsigned long ret;
@@ -169,9 +169,11 @@ ip6_packet_match(const struct sk_buff *skb,
unsigned short _frag_off;
protohdr = ipv6_find_hdr(skb, protoff, -1, &_frag_off);
- if (protohdr < 0)
+ if (protohdr < 0) {
+ if (_frag_off == 0)
+ *hotdrop = 1;
return 0;
-
+ }
*fragoff = _frag_off;
dprintf("Packet protocol %hi ?= %s%hi.\n",
@@ -290,7 +292,7 @@ ip6t_do_table(struct sk_buff **pskb,
IP_NF_ASSERT(e);
IP_NF_ASSERT(back);
if (ip6_packet_match(*pskb, indev, outdev, &e->ipv6,
- &protoff, &offset)) {
+ &protoff, &offset, &hotdrop)) {
struct ip6t_entry_target *t;
if (IP6T_MATCH_ITERATE(e, do_match,
@@ -584,12 +586,19 @@ check_entry(struct ip6t_entry *e, const char *name, unsigned int size,
return -EINVAL;
}
+ if (e->target_offset + sizeof(struct ip6t_entry_target) >
+ e->next_offset)
+ return -EINVAL;
+
j = 0;
ret = IP6T_MATCH_ITERATE(e, check_match, name, &e->ipv6, e->comefrom, &j);
if (ret != 0)
goto cleanup_matches;
t = ip6t_get_target(e);
+ ret = -EINVAL;
+ if (e->target_offset + t->u.target_size > e->next_offset)
+ goto cleanup_matches;
target = try_then_request_module(xt_find_target(AF_INET6,
t->u.user.name,
t->u.user.revision),
@@ -749,19 +758,17 @@ translate_table(const char *name,
}
}
- if (!mark_source_chains(newinfo, valid_hooks, entry0))
- return -ELOOP;
-
/* Finally, each sanity check must pass */
i = 0;
ret = IP6T_ENTRY_ITERATE(entry0, newinfo->size,
check_entry, name, size, &i);
- if (ret != 0) {
- IP6T_ENTRY_ITERATE(entry0, newinfo->size,
- cleanup_entry, &i);
- return ret;
- }
+ if (ret != 0)
+ goto cleanup;
+
+ ret = -ELOOP;
+ if (!mark_source_chains(newinfo, valid_hooks, entry0))
+ goto cleanup;
/* And one copy for every other CPU */
for_each_possible_cpu(i) {
@@ -769,6 +776,9 @@ translate_table(const char *name,
memcpy(newinfo->entries[i], entry0, newinfo->size);
}
+ return 0;
+cleanup:
+ IP6T_ENTRY_ITERATE(entry0, newinfo->size, cleanup_entry, &i);
return ret;
}
@@ -1438,6 +1448,9 @@ static void __exit ip6_tables_fini(void)
* If target header is found, its offset is set in *offset and return protocol
* number. Otherwise, return -1.
*
+ * If the first fragment doesn't contain the final protocol header or
+ * NEXTHDR_NONE it is considered invalid.
+ *
* Note that non-1st fragment is special case that "the protocol number
* of last header" is "next header" field in Fragment header. In this case,
* *offset is meaningless and fragment offset is stored in *fragoff if fragoff
@@ -1461,12 +1474,12 @@ int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
if ((!ipv6_ext_hdr(nexthdr)) || nexthdr == NEXTHDR_NONE) {
if (target < 0)
break;
- return -1;
+ return -ENOENT;
}
hp = skb_header_pointer(skb, start, sizeof(_hdr), &_hdr);
if (hp == NULL)
- return -1;
+ return -EBADMSG;
if (nexthdr == NEXTHDR_FRAGMENT) {
unsigned short _frag_off, *fp;
fp = skb_header_pointer(skb,
@@ -1475,18 +1488,18 @@ int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
sizeof(_frag_off),
&_frag_off);
if (fp == NULL)
- return -1;
+ return -EBADMSG;
_frag_off = ntohs(*fp) & ~0x7;
if (_frag_off) {
if (target < 0 &&
((!ipv6_ext_hdr(hp->nexthdr)) ||
- nexthdr == NEXTHDR_NONE)) {
+ hp->nexthdr == NEXTHDR_NONE)) {
if (fragoff)
*fragoff = _frag_off;
return hp->nexthdr;
}
- return -1;
+ return -ENOENT;
}
hdrlen = 8;
} else if (nexthdr == NEXTHDR_AUTH)
diff --git a/net/ipv6/netfilter/ip6t_ah.c b/net/ipv6/netfilter/ip6t_ah.c
index ec1b1608156..46486645eb7 100644
--- a/net/ipv6/netfilter/ip6t_ah.c
+++ b/net/ipv6/netfilter/ip6t_ah.c
@@ -54,9 +54,14 @@ match(const struct sk_buff *skb,
const struct ip6t_ah *ahinfo = matchinfo;
unsigned int ptr;
unsigned int hdrlen = 0;
+ int err;
- if (ipv6_find_hdr(skb, &ptr, NEXTHDR_AUTH, NULL) < 0)
+ err = ipv6_find_hdr(skb, &ptr, NEXTHDR_AUTH, NULL);
+ if (err < 0) {
+ if (err != -ENOENT)
+ *hotdrop = 1;
return 0;
+ }
ah = skb_header_pointer(skb, ptr, sizeof(_ah), &_ah);
if (ah == NULL) {
diff --git a/net/ipv6/netfilter/ip6t_frag.c b/net/ipv6/netfilter/ip6t_frag.c
index 78d9c8b9e28..cd22eaaccdc 100644
--- a/net/ipv6/netfilter/ip6t_frag.c
+++ b/net/ipv6/netfilter/ip6t_frag.c
@@ -52,9 +52,14 @@ match(const struct sk_buff *skb,
struct frag_hdr _frag, *fh;
const struct ip6t_frag *fraginfo = matchinfo;
unsigned int ptr;
+ int err;
- if (ipv6_find_hdr(skb, &ptr, NEXTHDR_FRAGMENT, NULL) < 0)
+ err = ipv6_find_hdr(skb, &ptr, NEXTHDR_FRAGMENT, NULL);
+ if (err < 0) {
+ if (err != -ENOENT)
+ *hotdrop = 1;
return 0;
+ }
fh = skb_header_pointer(skb, ptr, sizeof(_frag), &_frag);
if (fh == NULL) {
diff --git a/net/ipv6/netfilter/ip6t_hbh.c b/net/ipv6/netfilter/ip6t_hbh.c
index d32a205e3af..3f25babe044 100644
--- a/net/ipv6/netfilter/ip6t_hbh.c
+++ b/net/ipv6/netfilter/ip6t_hbh.c
@@ -65,9 +65,14 @@ match(const struct sk_buff *skb,
u8 _opttype, *tp = NULL;
u8 _optlen, *lp = NULL;
unsigned int optlen;
+ int err;
- if (ipv6_find_hdr(skb, &ptr, match->data, NULL) < 0)
+ err = ipv6_find_hdr(skb, &ptr, match->data, NULL);
+ if (err < 0) {
+ if (err != -ENOENT)
+ *hotdrop = 1;
return 0;
+ }
oh = skb_header_pointer(skb, ptr, sizeof(_optsh), &_optsh);
if (oh == NULL) {
diff --git a/net/ipv6/netfilter/ip6t_rt.c b/net/ipv6/netfilter/ip6t_rt.c
index bcb2e168a5b..54d7d14134f 100644
--- a/net/ipv6/netfilter/ip6t_rt.c
+++ b/net/ipv6/netfilter/ip6t_rt.c
@@ -58,9 +58,14 @@ match(const struct sk_buff *skb,
unsigned int hdrlen = 0;
unsigned int ret = 0;
struct in6_addr *ap, _addr;
+ int err;
- if (ipv6_find_hdr(skb, &ptr, NEXTHDR_ROUTING, NULL) < 0)
+ err = ipv6_find_hdr(skb, &ptr, NEXTHDR_ROUTING, NULL);
+ if (err < 0) {
+ if (err != -ENOENT)
+ *hotdrop = 1;
return 0;
+ }
rh = skb_header_pointer(skb, ptr, sizeof(_route), &_route);
if (rh == NULL) {
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index d09329ca326..d6dedc4aec7 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -604,7 +604,7 @@ error:
return err;
}
-static void rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
+static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
{
struct iovec *iov;
u8 __user *type = NULL;
@@ -616,7 +616,7 @@ static void rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
int i;
if (!msg->msg_iov)
- return;
+ return 0;
for (i = 0; i < msg->msg_iovlen; i++) {
iov = &msg->msg_iov[i];
@@ -638,8 +638,9 @@ static void rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
code = iov->iov_base;
if (type && code) {
- get_user(fl->fl_icmp_type, type);
- get_user(fl->fl_icmp_code, code);
+ if (get_user(fl->fl_icmp_type, type) ||
+ get_user(fl->fl_icmp_code, code))
+ return -EFAULT;
probed = 1;
}
break;
@@ -650,7 +651,8 @@ static void rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
/* check if type field is readable or not. */
if (iov->iov_len > 2 - len) {
u8 __user *p = iov->iov_base;
- get_user(fl->fl_mh_type, &p[2 - len]);
+ if (get_user(fl->fl_mh_type, &p[2 - len]))
+ return -EFAULT;
probed = 1;
} else
len += iov->iov_len;
@@ -664,6 +666,7 @@ static void rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
if (probed)
break;
}
+ return 0;
}
static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
@@ -787,7 +790,9 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
opt = ipv6_fixup_options(&opt_space, opt);
fl.proto = proto;
- rawv6_probe_proto_opt(&fl, msg);
+ err = rawv6_probe_proto_opt(&fl, msg);
+ if (err)
+ goto out;
ipv6_addr_copy(&fl.fl6_dst, daddr);
if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index d6b4b4f48d1..b39ae99122d 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -141,6 +141,10 @@ struct rt6_info ip6_null_entry = {
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+static int ip6_pkt_prohibit(struct sk_buff *skb);
+static int ip6_pkt_prohibit_out(struct sk_buff *skb);
+static int ip6_pkt_blk_hole(struct sk_buff *skb);
+
struct rt6_info ip6_prohibit_entry = {
.u = {
.dst = {
@@ -150,8 +154,8 @@ struct rt6_info ip6_prohibit_entry = {
.obsolete = -1,
.error = -EACCES,
.metrics = { [RTAX_HOPLIMIT - 1] = 255, },
- .input = ip6_pkt_discard,
- .output = ip6_pkt_discard_out,
+ .input = ip6_pkt_prohibit,
+ .output = ip6_pkt_prohibit_out,
.ops = &ip6_dst_ops,
.path = (struct dst_entry*)&ip6_prohibit_entry,
}
@@ -170,8 +174,8 @@ struct rt6_info ip6_blk_hole_entry = {
.obsolete = -1,
.error = -EINVAL,
.metrics = { [RTAX_HOPLIMIT - 1] = 255, },
- .input = ip6_pkt_discard,
- .output = ip6_pkt_discard_out,
+ .input = ip6_pkt_blk_hole,
+ .output = ip6_pkt_blk_hole,
.ops = &ip6_dst_ops,
.path = (struct dst_entry*)&ip6_blk_hole_entry,
}
@@ -326,6 +330,8 @@ static int inline rt6_check_neigh(struct rt6_info *rt)
read_lock_bh(&neigh->lock);
if (neigh->nud_state & NUD_VALID)
m = 2;
+ else if (!(neigh->nud_state & NUD_FAILED))
+ m = 1;
read_unlock_bh(&neigh->lock);
}
return m;
@@ -343,9 +349,7 @@ static int rt6_score_route(struct rt6_info *rt, int oif,
m |= IPV6_DECODE_PREF(IPV6_EXTRACT_PREF(rt->rt6i_flags)) << 2;
#endif
n = rt6_check_neigh(rt);
- if (n > 1)
- m |= 16;
- else if (!n && strict & RT6_LOOKUP_F_REACHABLE)
+ if (!n && (strict & RT6_LOOKUP_F_REACHABLE))
return -1;
return m;
}
@@ -376,10 +380,11 @@ static struct rt6_info *rt6_select(struct rt6_info **head, int oif,
continue;
if (m > mpri) {
- rt6_probe(match);
+ if (strict & RT6_LOOKUP_F_REACHABLE)
+ rt6_probe(match);
match = rt;
mpri = m;
- } else {
+ } else if (strict & RT6_LOOKUP_F_REACHABLE) {
rt6_probe(rt);
}
}
@@ -484,7 +489,7 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
do { \
if (rt == &ip6_null_entry) { \
struct fib6_node *pn; \
- while (fn) { \
+ while (1) { \
if (fn->fn_flags & RTN_TL_ROOT) \
goto out; \
pn = fn->parent; \
@@ -529,13 +534,17 @@ struct rt6_info *rt6_lookup(struct in6_addr *daddr, struct in6_addr *saddr,
.nl_u = {
.ip6_u = {
.daddr = *daddr,
- /* TODO: saddr */
},
},
};
struct dst_entry *dst;
int flags = strict ? RT6_LOOKUP_F_IFACE : 0;
+ if (saddr) {
+ memcpy(&fl.fl6_src, saddr, sizeof(*saddr));
+ flags |= RT6_LOOKUP_F_HAS_SADDR;
+ }
+
dst = fib6_rule_lookup(&fl, flags, ip6_pol_route_lookup);
if (dst->error == 0)
return (struct rt6_info *) dst;
@@ -614,8 +623,6 @@ static struct rt6_info *rt6_alloc_clone(struct rt6_info *ort, struct in6_addr *d
ipv6_addr_copy(&rt->rt6i_dst.addr, daddr);
rt->rt6i_dst.plen = 128;
rt->rt6i_flags |= RTF_CACHE;
- if (rt->rt6i_flags & RTF_REJECT)
- rt->u.dst.error = ort->u.dst.error;
rt->u.dst.flags |= DST_HOST;
rt->rt6i_nexthop = neigh_clone(ort->rt6i_nexthop);
}
@@ -630,7 +637,7 @@ static struct rt6_info *ip6_pol_route_input(struct fib6_table *table,
int strict = 0;
int attempts = 3;
int err;
- int reachable = RT6_LOOKUP_F_REACHABLE;
+ int reachable = ipv6_devconf.forwarding ? 0 : RT6_LOOKUP_F_REACHABLE;
strict |= flags & RT6_LOOKUP_F_IFACE;
@@ -697,6 +704,7 @@ out2:
void ip6_route_input(struct sk_buff *skb)
{
struct ipv6hdr *iph = skb->nh.ipv6h;
+ int flags = RT6_LOOKUP_F_HAS_SADDR;
struct flowi fl = {
.iif = skb->dev->ifindex,
.nl_u = {
@@ -711,7 +719,9 @@ void ip6_route_input(struct sk_buff *skb)
},
.proto = iph->nexthdr,
};
- int flags = rt6_need_strict(&iph->daddr) ? RT6_LOOKUP_F_IFACE : 0;
+
+ if (rt6_need_strict(&iph->daddr))
+ flags |= RT6_LOOKUP_F_IFACE;
skb->dst = fib6_rule_lookup(&fl, flags, ip6_pol_route_input);
}
@@ -724,7 +734,7 @@ static struct rt6_info *ip6_pol_route_output(struct fib6_table *table,
int strict = 0;
int attempts = 3;
int err;
- int reachable = RT6_LOOKUP_F_REACHABLE;
+ int reachable = ipv6_devconf.forwarding ? 0 : RT6_LOOKUP_F_REACHABLE;
strict |= flags & RT6_LOOKUP_F_IFACE;
@@ -794,6 +804,9 @@ struct dst_entry * ip6_route_output(struct sock *sk, struct flowi *fl)
if (rt6_need_strict(&fl->fl6_dst))
flags |= RT6_LOOKUP_F_IFACE;
+ if (!ipv6_addr_any(&fl->fl6_src))
+ flags |= RT6_LOOKUP_F_HAS_SADDR;
+
return fib6_rule_lookup(fl, flags, ip6_pol_route_output);
}
@@ -1345,6 +1358,7 @@ static struct rt6_info *ip6_route_redirect(struct in6_addr *dest,
struct in6_addr *gateway,
struct net_device *dev)
{
+ int flags = RT6_LOOKUP_F_HAS_SADDR;
struct ip6rd_flowi rdfl = {
.fl = {
.oif = dev->ifindex,
@@ -1357,7 +1371,9 @@ static struct rt6_info *ip6_route_redirect(struct in6_addr *dest,
},
.gateway = *gateway,
};
- int flags = rt6_need_strict(dest) ? RT6_LOOKUP_F_IFACE : 0;
+
+ if (rt6_need_strict(dest))
+ flags |= RT6_LOOKUP_F_IFACE;
return (struct rt6_info *)fib6_rule_lookup((struct flowi *)&rdfl, flags, __ip6_route_redirect);
}
@@ -1527,6 +1543,7 @@ static struct rt6_info * ip6_rt_copy(struct rt6_info *ort)
rt->u.dst.output = ort->u.dst.output;
memcpy(rt->u.dst.metrics, ort->u.dst.metrics, RTAX_MAX*sizeof(u32));
+ rt->u.dst.error = ort->u.dst.error;
rt->u.dst.dev = ort->u.dst.dev;
if (rt->u.dst.dev)
dev_hold(rt->u.dst.dev);
@@ -1730,24 +1747,50 @@ int ipv6_route_ioctl(unsigned int cmd, void __user *arg)
* Drop the packet on the floor
*/
-static int ip6_pkt_discard(struct sk_buff *skb)
+static inline int ip6_pkt_drop(struct sk_buff *skb, int code)
{
int type = ipv6_addr_type(&skb->nh.ipv6h->daddr);
if (type == IPV6_ADDR_ANY || type == IPV6_ADDR_RESERVED)
IP6_INC_STATS(IPSTATS_MIB_INADDRERRORS);
IP6_INC_STATS(IPSTATS_MIB_OUTNOROUTES);
- icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_NOROUTE, 0, skb->dev);
+ icmpv6_send(skb, ICMPV6_DEST_UNREACH, code, 0, skb->dev);
kfree_skb(skb);
return 0;
}
+static int ip6_pkt_discard(struct sk_buff *skb)
+{
+ return ip6_pkt_drop(skb, ICMPV6_NOROUTE);
+}
+
static int ip6_pkt_discard_out(struct sk_buff *skb)
{
skb->dev = skb->dst->dev;
return ip6_pkt_discard(skb);
}
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+
+static int ip6_pkt_prohibit(struct sk_buff *skb)
+{
+ return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED);
+}
+
+static int ip6_pkt_prohibit_out(struct sk_buff *skb)
+{
+ skb->dev = skb->dst->dev;
+ return ip6_pkt_prohibit(skb);
+}
+
+static int ip6_pkt_blk_hole(struct sk_buff *skb)
+{
+ kfree_skb(skb);
+ return 0;
+}
+
+#endif
+
/*
* Allocate a dst for local (unicast / anycast) address.
*/
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 836eecd7e62..be699f85b2c 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -850,3 +850,8 @@ int __init sit_init(void)
inet_del_protocol(&sit_protocol, IPPROTO_IPV6);
goto out;
}
+
+module_init(sit_init);
+module_exit(sit_cleanup);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("sit0");
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 3b6575478fc..4c2a7c0cafe 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -329,7 +329,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
}
if (sk->sk_state == TCP_TIME_WAIT) {
- inet_twsk_put((struct inet_timewait_sock *)sk);
+ inet_twsk_put(inet_twsk(sk));
return;
}
@@ -653,7 +653,7 @@ static void tcp_v6_send_ack(struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32
int tot_len = sizeof(struct tcphdr);
if (ts)
- tot_len += 3*4;
+ tot_len += TCPOLEN_TSTAMP_ALIGNED;
buff = alloc_skb(MAX_HEADER + sizeof(struct ipv6hdr) + tot_len,
GFP_ATOMIC);
@@ -749,7 +749,7 @@ static struct sock *tcp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)
bh_lock_sock(nsk);
return nsk;
}
- inet_twsk_put((struct inet_timewait_sock *)nsk);
+ inet_twsk_put(inet_twsk(nsk));
return NULL;
}
@@ -1283,18 +1283,17 @@ discard_and_relse:
do_time_wait:
if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {
- inet_twsk_put((struct inet_timewait_sock *)sk);
+ inet_twsk_put(inet_twsk(sk));
goto discard_it;
}
if (skb->len < (th->doff<<2) || tcp_checksum_complete(skb)) {
TCP_INC_STATS_BH(TCP_MIB_INERRS);
- inet_twsk_put((struct inet_timewait_sock *)sk);
+ inet_twsk_put(inet_twsk(sk));
goto discard_it;
}
- switch (tcp_timewait_state_process((struct inet_timewait_sock *)sk,
- skb, th)) {
+ switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {
case TCP_TW_SYN:
{
struct sock *sk2;
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index e0c3934a7e4..c83f23e51c4 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -242,14 +242,13 @@ static void udpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
{
struct ipv6_pinfo *np;
struct ipv6hdr *hdr = (struct ipv6hdr*)skb->data;
- struct net_device *dev = skb->dev;
struct in6_addr *saddr = &hdr->saddr;
struct in6_addr *daddr = &hdr->daddr;
struct udphdr *uh = (struct udphdr*)(skb->data+offset);
struct sock *sk;
int err;
- sk = udp_v6_lookup(daddr, uh->dest, saddr, uh->source, dev->ifindex);
+ sk = udp_v6_lookup(daddr, uh->dest, saddr, uh->source, inet6_iif(skb));
if (sk == NULL)
return;
@@ -348,7 +347,7 @@ static void udpv6_mcast_deliver(struct udphdr *uh,
read_lock(&udp_hash_lock);
sk = sk_head(&udp_hash[ntohs(uh->dest) & (UDP_HTABLE_SIZE - 1)]);
- dif = skb->dev->ifindex;
+ dif = inet6_iif(skb);
sk = udp_v6_mcast_next(sk, uh->dest, daddr, uh->source, saddr, dif);
if (!sk) {
kfree_skb(skb);
@@ -429,7 +428,7 @@ static int udpv6_rcv(struct sk_buff **pskb)
* check socket cache ... must talk to Alan about his plans
* for sock caches... i'll skip this for now.
*/
- sk = udp_v6_lookup(saddr, uh->source, daddr, uh->dest, dev->ifindex);
+ sk = udp_v6_lookup(saddr, uh->source, daddr, uh->dest, inet6_iif(skb));
if (sk == NULL) {
if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 6a252e2134d..d400f8fae12 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -25,12 +25,14 @@
static struct dst_ops xfrm6_dst_ops;
static struct xfrm_policy_afinfo xfrm6_policy_afinfo;
-static int xfrm6_dst_lookup(struct xfrm_dst **dst, struct flowi *fl)
+static int xfrm6_dst_lookup(struct xfrm_dst **xdst, struct flowi *fl)
{
- int err = 0;
- *dst = (struct xfrm_dst*)ip6_route_output(NULL, fl);
- if (!*dst)
- err = -ENETUNREACH;
+ struct dst_entry *dst = ip6_route_output(NULL, fl);
+ int err = dst->error;
+ if (!err)
+ *xdst = (struct xfrm_dst *) dst;
+ else
+ dst_release(dst);
return err;
}
@@ -73,7 +75,7 @@ __xfrm6_find_bundle(struct flowi *fl, struct xfrm_policy *policy)
xdst->u.rt6.rt6i_src.plen);
if (ipv6_addr_equal(&xdst->u.rt6.rt6i_dst.addr, &fl_dst_prefix) &&
ipv6_addr_equal(&xdst->u.rt6.rt6i_src.addr, &fl_src_prefix) &&
- xfrm_bundle_ok(xdst, fl, AF_INET6,
+ xfrm_bundle_ok(policy, xdst, fl, AF_INET6,
(xdst->u.rt6.rt6i_dst.plen != 128 ||
xdst->u.rt6.rt6i_src.plen != 128))) {
dst_clone(dst);
diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index 7af227bb155..7931e4f898d 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -135,7 +135,7 @@ u32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr)
x6spi = __xfrm6_tunnel_spi_lookup(saddr);
spi = x6spi ? x6spi->spi : 0;
read_unlock_bh(&xfrm6_tunnel_spi_lock);
- return spi;
+ return htonl(spi);
}
EXPORT_SYMBOL(xfrm6_tunnel_spi_lookup);
@@ -210,7 +210,7 @@ u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr)
spi = __xfrm6_tunnel_alloc_spi(saddr);
write_unlock_bh(&xfrm6_tunnel_spi_lock);
- return spi;
+ return htonl(spi);
}
EXPORT_SYMBOL(xfrm6_tunnel_alloc_spi);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 10:32:59 +0000