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authorJeff Garzik <jgarzik@pobox.com>2005-10-06 05:51:07 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-10-06 05:51:07 -0400
commit012e060c95e547eceea4a12c6f58592473bf4011 (patch)
treeb57d3eafb50ce517577d2cf366c9ef0b4b286589 /net/ipv4
parent923f122573851d18a3832ca808269fa2d5046fb1 (diff)
parented39f731ab2e77e58122232f6e27333331d7793d (diff)
Merge branch 'master'
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/arp.c21
-rw-r--r--net/ipv4/devinet.c22
-rw-r--r--net/ipv4/fib_frontend.c4
-rw-r--r--net/ipv4/fib_semantics.c4
-rw-r--r--net/ipv4/fib_trie.c49
-rw-r--r--net/ipv4/icmp.c2
-rw-r--r--net/ipv4/igmp.c4
-rw-r--r--net/ipv4/inet_timewait_sock.c6
-rw-r--r--net/ipv4/ip_gre.c4
-rw-r--r--net/ipv4/ipmr.c6
-rw-r--r--net/ipv4/ipvs/ip_vs_conn.c43
-rw-r--r--net/ipv4/ipvs/ip_vs_core.c16
-rw-r--r--net/ipv4/ipvs/ip_vs_sync.c20
-rw-r--r--net/ipv4/netfilter/Kconfig47
-rw-r--r--net/ipv4/netfilter/Makefile12
-rw-r--r--net/ipv4/netfilter/ip_conntrack_amanda.c2
-rw-r--r--net/ipv4/netfilter/ip_conntrack_core.c48
-rw-r--r--net/ipv4/netfilter/ip_conntrack_ftp.c6
-rw-r--r--net/ipv4/netfilter/ip_conntrack_helper_pptp.c806
-rw-r--r--net/ipv4/netfilter/ip_conntrack_irc.c6
-rw-r--r--net/ipv4/netfilter/ip_conntrack_netbios_ns.c23
-rw-r--r--net/ipv4/netfilter/ip_conntrack_netlink.c4
-rw-r--r--net/ipv4/netfilter/ip_conntrack_proto_gre.c328
-rw-r--r--net/ipv4/netfilter/ip_conntrack_proto_sctp.c1
-rw-r--r--net/ipv4/netfilter/ip_conntrack_proto_tcp.c3
-rw-r--r--net/ipv4/netfilter/ip_conntrack_standalone.c6
-rw-r--r--net/ipv4/netfilter/ip_conntrack_tftp.c6
-rw-r--r--net/ipv4/netfilter/ip_nat_core.c37
-rw-r--r--net/ipv4/netfilter/ip_nat_helper.c4
-rw-r--r--net/ipv4/netfilter/ip_nat_helper_pptp.c401
-rw-r--r--net/ipv4/netfilter/ip_nat_proto_gre.c214
-rw-r--r--net/ipv4/netfilter/ip_nat_standalone.c25
-rw-r--r--net/ipv4/netfilter/ip_queue.c4
-rw-r--r--net/ipv4/netfilter/ipt_CLUSTERIP.c223
-rw-r--r--net/ipv4/netfilter/ipt_MASQUERADE.c6
-rw-r--r--net/ipv4/netfilter/ipt_REDIRECT.c16
-rw-r--r--net/ipv4/netfilter/ipt_ULOG.c4
-rw-r--r--net/ipv4/raw.c2
-rw-r--r--net/ipv4/route.c6
-rw-r--r--net/ipv4/tcp_input.c18
-rw-r--r--net/ipv4/tcp_ipv4.c11
-rw-r--r--net/ipv4/tcp_minisocks.c2
-rw-r--r--net/ipv4/tcp_output.c23
43 files changed, 2186 insertions, 309 deletions
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 8bf312bdea13..b425748f02d7 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -241,7 +241,7 @@ static int arp_constructor(struct neighbour *neigh)
241 neigh->type = inet_addr_type(addr); 241 neigh->type = inet_addr_type(addr);
242 242
243 rcu_read_lock(); 243 rcu_read_lock();
244 in_dev = rcu_dereference(__in_dev_get(dev)); 244 in_dev = __in_dev_get_rcu(dev);
245 if (in_dev == NULL) { 245 if (in_dev == NULL) {
246 rcu_read_unlock(); 246 rcu_read_unlock();
247 return -EINVAL; 247 return -EINVAL;
@@ -697,12 +697,6 @@ void arp_send(int type, int ptype, u32 dest_ip,
697 arp_xmit(skb); 697 arp_xmit(skb);
698} 698}
699 699
700static void parp_redo(struct sk_buff *skb)
701{
702 nf_reset(skb);
703 arp_rcv(skb, skb->dev, NULL, skb->dev);
704}
705
706/* 700/*
707 * Process an arp request. 701 * Process an arp request.
708 */ 702 */
@@ -922,6 +916,11 @@ out:
922 return 0; 916 return 0;
923} 917}
924 918
919static void parp_redo(struct sk_buff *skb)
920{
921 arp_process(skb);
922}
923
925 924
926/* 925/*
927 * Receive an arp request from the device layer. 926 * Receive an arp request from the device layer.
@@ -990,8 +989,8 @@ static int arp_req_set(struct arpreq *r, struct net_device * dev)
990 ipv4_devconf.proxy_arp = 1; 989 ipv4_devconf.proxy_arp = 1;
991 return 0; 990 return 0;
992 } 991 }
993 if (__in_dev_get(dev)) { 992 if (__in_dev_get_rtnl(dev)) {
994 __in_dev_get(dev)->cnf.proxy_arp = 1; 993 __in_dev_get_rtnl(dev)->cnf.proxy_arp = 1;
995 return 0; 994 return 0;
996 } 995 }
997 return -ENXIO; 996 return -ENXIO;
@@ -1096,8 +1095,8 @@ static int arp_req_delete(struct arpreq *r, struct net_device * dev)
1096 ipv4_devconf.proxy_arp = 0; 1095 ipv4_devconf.proxy_arp = 0;
1097 return 0; 1096 return 0;
1098 } 1097 }
1099 if (__in_dev_get(dev)) { 1098 if (__in_dev_get_rtnl(dev)) {
1100 __in_dev_get(dev)->cnf.proxy_arp = 0; 1099 __in_dev_get_rtnl(dev)->cnf.proxy_arp = 0;
1101 return 0; 1100 return 0;
1102 } 1101 }
1103 return -ENXIO; 1102 return -ENXIO;
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index ba2895ae8151..74f2207e131a 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -351,7 +351,7 @@ static int inet_insert_ifa(struct in_ifaddr *ifa)
351 351
352static int inet_set_ifa(struct net_device *dev, struct in_ifaddr *ifa) 352static int inet_set_ifa(struct net_device *dev, struct in_ifaddr *ifa)
353{ 353{
354 struct in_device *in_dev = __in_dev_get(dev); 354 struct in_device *in_dev = __in_dev_get_rtnl(dev);
355 355
356 ASSERT_RTNL(); 356 ASSERT_RTNL();
357 357
@@ -449,7 +449,7 @@ static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg
449 goto out; 449 goto out;
450 450
451 rc = -ENOBUFS; 451 rc = -ENOBUFS;
452 if ((in_dev = __in_dev_get(dev)) == NULL) { 452 if ((in_dev = __in_dev_get_rtnl(dev)) == NULL) {
453 in_dev = inetdev_init(dev); 453 in_dev = inetdev_init(dev);
454 if (!in_dev) 454 if (!in_dev)
455 goto out; 455 goto out;
@@ -584,7 +584,7 @@ int devinet_ioctl(unsigned int cmd, void __user *arg)
584 if (colon) 584 if (colon)
585 *colon = ':'; 585 *colon = ':';
586 586
587 if ((in_dev = __in_dev_get(dev)) != NULL) { 587 if ((in_dev = __in_dev_get_rtnl(dev)) != NULL) {
588 if (tryaddrmatch) { 588 if (tryaddrmatch) {
589 /* Matthias Andree */ 589 /* Matthias Andree */
590 /* compare label and address (4.4BSD style) */ 590 /* compare label and address (4.4BSD style) */
@@ -748,7 +748,7 @@ rarok:
748 748
749static int inet_gifconf(struct net_device *dev, char __user *buf, int len) 749static int inet_gifconf(struct net_device *dev, char __user *buf, int len)
750{ 750{
751 struct in_device *in_dev = __in_dev_get(dev); 751 struct in_device *in_dev = __in_dev_get_rtnl(dev);
752 struct in_ifaddr *ifa; 752 struct in_ifaddr *ifa;
753 struct ifreq ifr; 753 struct ifreq ifr;
754 int done = 0; 754 int done = 0;
@@ -791,7 +791,7 @@ u32 inet_select_addr(const struct net_device *dev, u32 dst, int scope)
791 struct in_device *in_dev; 791 struct in_device *in_dev;
792 792
793 rcu_read_lock(); 793 rcu_read_lock();
794 in_dev = __in_dev_get(dev); 794 in_dev = __in_dev_get_rcu(dev);
795 if (!in_dev) 795 if (!in_dev)
796 goto no_in_dev; 796 goto no_in_dev;
797 797
@@ -818,7 +818,7 @@ no_in_dev:
818 read_lock(&dev_base_lock); 818 read_lock(&dev_base_lock);
819 rcu_read_lock(); 819 rcu_read_lock();
820 for (dev = dev_base; dev; dev = dev->next) { 820 for (dev = dev_base; dev; dev = dev->next) {
821 if ((in_dev = __in_dev_get(dev)) == NULL) 821 if ((in_dev = __in_dev_get_rcu(dev)) == NULL)
822 continue; 822 continue;
823 823
824 for_primary_ifa(in_dev) { 824 for_primary_ifa(in_dev) {
@@ -887,7 +887,7 @@ u32 inet_confirm_addr(const struct net_device *dev, u32 dst, u32 local, int scop
887 887
888 if (dev) { 888 if (dev) {
889 rcu_read_lock(); 889 rcu_read_lock();
890 if ((in_dev = __in_dev_get(dev))) 890 if ((in_dev = __in_dev_get_rcu(dev)))
891 addr = confirm_addr_indev(in_dev, dst, local, scope); 891 addr = confirm_addr_indev(in_dev, dst, local, scope);
892 rcu_read_unlock(); 892 rcu_read_unlock();
893 893
@@ -897,7 +897,7 @@ u32 inet_confirm_addr(const struct net_device *dev, u32 dst, u32 local, int scop
897 read_lock(&dev_base_lock); 897 read_lock(&dev_base_lock);
898 rcu_read_lock(); 898 rcu_read_lock();
899 for (dev = dev_base; dev; dev = dev->next) { 899 for (dev = dev_base; dev; dev = dev->next) {
900 if ((in_dev = __in_dev_get(dev))) { 900 if ((in_dev = __in_dev_get_rcu(dev))) {
901 addr = confirm_addr_indev(in_dev, dst, local, scope); 901 addr = confirm_addr_indev(in_dev, dst, local, scope);
902 if (addr) 902 if (addr)
903 break; 903 break;
@@ -957,7 +957,7 @@ static int inetdev_event(struct notifier_block *this, unsigned long event,
957 void *ptr) 957 void *ptr)
958{ 958{
959 struct net_device *dev = ptr; 959 struct net_device *dev = ptr;
960 struct in_device *in_dev = __in_dev_get(dev); 960 struct in_device *in_dev = __in_dev_get_rtnl(dev);
961 961
962 ASSERT_RTNL(); 962 ASSERT_RTNL();
963 963
@@ -1078,7 +1078,7 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
1078 if (idx > s_idx) 1078 if (idx > s_idx)
1079 s_ip_idx = 0; 1079 s_ip_idx = 0;
1080 rcu_read_lock(); 1080 rcu_read_lock();
1081 if ((in_dev = __in_dev_get(dev)) == NULL) { 1081 if ((in_dev = __in_dev_get_rcu(dev)) == NULL) {
1082 rcu_read_unlock(); 1082 rcu_read_unlock();
1083 continue; 1083 continue;
1084 } 1084 }
@@ -1149,7 +1149,7 @@ void inet_forward_change(void)
1149 for (dev = dev_base; dev; dev = dev->next) { 1149 for (dev = dev_base; dev; dev = dev->next) {
1150 struct in_device *in_dev; 1150 struct in_device *in_dev;
1151 rcu_read_lock(); 1151 rcu_read_lock();
1152 in_dev = __in_dev_get(dev); 1152 in_dev = __in_dev_get_rcu(dev);
1153 if (in_dev) 1153 if (in_dev)
1154 in_dev->cnf.forwarding = on; 1154 in_dev->cnf.forwarding = on;
1155 rcu_read_unlock(); 1155 rcu_read_unlock();
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 4e1379f71269..e61bc7177eb1 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -173,7 +173,7 @@ int fib_validate_source(u32 src, u32 dst, u8 tos, int oif,
173 173
174 no_addr = rpf = 0; 174 no_addr = rpf = 0;
175 rcu_read_lock(); 175 rcu_read_lock();
176 in_dev = __in_dev_get(dev); 176 in_dev = __in_dev_get_rcu(dev);
177 if (in_dev) { 177 if (in_dev) {
178 no_addr = in_dev->ifa_list == NULL; 178 no_addr = in_dev->ifa_list == NULL;
179 rpf = IN_DEV_RPFILTER(in_dev); 179 rpf = IN_DEV_RPFILTER(in_dev);
@@ -607,7 +607,7 @@ static int fib_inetaddr_event(struct notifier_block *this, unsigned long event,
607static int fib_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) 607static int fib_netdev_event(struct notifier_block *this, unsigned long event, void *ptr)
608{ 608{
609 struct net_device *dev = ptr; 609 struct net_device *dev = ptr;
610 struct in_device *in_dev = __in_dev_get(dev); 610 struct in_device *in_dev = __in_dev_get_rtnl(dev);
611 611
612 if (event == NETDEV_UNREGISTER) { 612 if (event == NETDEV_UNREGISTER) {
613 fib_disable_ip(dev, 2); 613 fib_disable_ip(dev, 2);
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index d41219e8037c..186f20c4a45e 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -1087,7 +1087,7 @@ fib_convert_rtentry(int cmd, struct nlmsghdr *nl, struct rtmsg *rtm,
1087 rta->rta_oif = &dev->ifindex; 1087 rta->rta_oif = &dev->ifindex;
1088 if (colon) { 1088 if (colon) {
1089 struct in_ifaddr *ifa; 1089 struct in_ifaddr *ifa;
1090 struct in_device *in_dev = __in_dev_get(dev); 1090 struct in_device *in_dev = __in_dev_get_rtnl(dev);
1091 if (!in_dev) 1091 if (!in_dev)
1092 return -ENODEV; 1092 return -ENODEV;
1093 *colon = ':'; 1093 *colon = ':';
@@ -1268,7 +1268,7 @@ int fib_sync_up(struct net_device *dev)
1268 } 1268 }
1269 if (nh->nh_dev == NULL || !(nh->nh_dev->flags&IFF_UP)) 1269 if (nh->nh_dev == NULL || !(nh->nh_dev->flags&IFF_UP))
1270 continue; 1270 continue;
1271 if (nh->nh_dev != dev || __in_dev_get(dev) == NULL) 1271 if (nh->nh_dev != dev || !__in_dev_get_rtnl(dev))
1272 continue; 1272 continue;
1273 alive++; 1273 alive++;
1274 spin_lock_bh(&fib_multipath_lock); 1274 spin_lock_bh(&fib_multipath_lock);
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 1b63b4824164..50c0519cd70d 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -43,7 +43,7 @@
43 * 2 of the License, or (at your option) any later version. 43 * 2 of the License, or (at your option) any later version.
44 */ 44 */
45 45
46#define VERSION "0.403" 46#define VERSION "0.404"
47 47
48#include <linux/config.h> 48#include <linux/config.h>
49#include <asm/uaccess.h> 49#include <asm/uaccess.h>
@@ -224,7 +224,7 @@ static inline int tkey_mismatch(t_key a, int offset, t_key b)
224 Consider a node 'n' and its parent 'tp'. 224 Consider a node 'n' and its parent 'tp'.
225 225
226 If n is a leaf, every bit in its key is significant. Its presence is 226 If n is a leaf, every bit in its key is significant. Its presence is
227 necessitaded by path compression, since during a tree traversal (when 227 necessitated by path compression, since during a tree traversal (when
228 searching for a leaf - unless we are doing an insertion) we will completely 228 searching for a leaf - unless we are doing an insertion) we will completely
229 ignore all skipped bits we encounter. Thus we need to verify, at the end of 229 ignore all skipped bits we encounter. Thus we need to verify, at the end of
230 a potentially successful search, that we have indeed been walking the 230 a potentially successful search, that we have indeed been walking the
@@ -836,11 +836,12 @@ static void trie_init(struct trie *t)
836#endif 836#endif
837} 837}
838 838
839/* readside most use rcu_read_lock currently dump routines 839/* readside must use rcu_read_lock currently dump routines
840 via get_fa_head and dump */ 840 via get_fa_head and dump */
841 841
842static struct leaf_info *find_leaf_info(struct hlist_head *head, int plen) 842static struct leaf_info *find_leaf_info(struct leaf *l, int plen)
843{ 843{
844 struct hlist_head *head = &l->list;
844 struct hlist_node *node; 845 struct hlist_node *node;
845 struct leaf_info *li; 846 struct leaf_info *li;
846 847
@@ -853,7 +854,7 @@ static struct leaf_info *find_leaf_info(struct hlist_head *head, int plen)
853 854
854static inline struct list_head * get_fa_head(struct leaf *l, int plen) 855static inline struct list_head * get_fa_head(struct leaf *l, int plen)
855{ 856{
856 struct leaf_info *li = find_leaf_info(&l->list, plen); 857 struct leaf_info *li = find_leaf_info(l, plen);
857 858
858 if (!li) 859 if (!li)
859 return NULL; 860 return NULL;
@@ -1085,7 +1086,7 @@ fib_insert_node(struct trie *t, int *err, u32 key, int plen)
1085 } 1086 }
1086 1087
1087 if (tp && tp->pos + tp->bits > 32) 1088 if (tp && tp->pos + tp->bits > 32)
1088 printk("ERROR tp=%p pos=%d, bits=%d, key=%0x plen=%d\n", 1089 printk(KERN_WARNING "fib_trie tp=%p pos=%d, bits=%d, key=%0x plen=%d\n",
1089 tp, tp->pos, tp->bits, key, plen); 1090 tp, tp->pos, tp->bits, key, plen);
1090 1091
1091 /* Rebalance the trie */ 1092 /* Rebalance the trie */
@@ -1248,7 +1249,7 @@ err:
1248} 1249}
1249 1250
1250 1251
1251/* should be clalled with rcu_read_lock */ 1252/* should be called with rcu_read_lock */
1252static inline int check_leaf(struct trie *t, struct leaf *l, 1253static inline int check_leaf(struct trie *t, struct leaf *l,
1253 t_key key, int *plen, const struct flowi *flp, 1254 t_key key, int *plen, const struct flowi *flp,
1254 struct fib_result *res) 1255 struct fib_result *res)
@@ -1590,7 +1591,7 @@ fn_trie_delete(struct fib_table *tb, struct rtmsg *r, struct kern_rta *rta,
1590 rtmsg_fib(RTM_DELROUTE, htonl(key), fa, plen, tb->tb_id, nlhdr, req); 1591 rtmsg_fib(RTM_DELROUTE, htonl(key), fa, plen, tb->tb_id, nlhdr, req);
1591 1592
1592 l = fib_find_node(t, key); 1593 l = fib_find_node(t, key);
1593 li = find_leaf_info(&l->list, plen); 1594 li = find_leaf_info(l, plen);
1594 1595
1595 list_del_rcu(&fa->fa_list); 1596 list_del_rcu(&fa->fa_list);
1596 1597
@@ -1714,7 +1715,6 @@ static int fn_trie_flush(struct fib_table *tb)
1714 1715
1715 t->revision++; 1716 t->revision++;
1716 1717
1717 rcu_read_lock();
1718 for (h = 0; (l = nextleaf(t, l)) != NULL; h++) { 1718 for (h = 0; (l = nextleaf(t, l)) != NULL; h++) {
1719 found += trie_flush_leaf(t, l); 1719 found += trie_flush_leaf(t, l);
1720 1720
@@ -1722,7 +1722,6 @@ static int fn_trie_flush(struct fib_table *tb)
1722 trie_leaf_remove(t, ll->key); 1722 trie_leaf_remove(t, ll->key);
1723 ll = l; 1723 ll = l;
1724 } 1724 }
1725 rcu_read_unlock();
1726 1725
1727 if (ll && hlist_empty(&ll->list)) 1726 if (ll && hlist_empty(&ll->list))
1728 trie_leaf_remove(t, ll->key); 1727 trie_leaf_remove(t, ll->key);
@@ -1833,16 +1832,7 @@ static int fn_trie_dump_fa(t_key key, int plen, struct list_head *fah, struct fi
1833 i++; 1832 i++;
1834 continue; 1833 continue;
1835 } 1834 }
1836 if (fa->fa_info->fib_nh == NULL) { 1835 BUG_ON(!fa->fa_info);
1837 printk("Trie error _fib_nh=NULL in fa[%d] k=%08x plen=%d\n", i, key, plen);
1838 i++;
1839 continue;
1840 }
1841 if (fa->fa_info == NULL) {
1842 printk("Trie error fa_info=NULL in fa[%d] k=%08x plen=%d\n", i, key, plen);
1843 i++;
1844 continue;
1845 }
1846 1836
1847 if (fib_dump_info(skb, NETLINK_CB(cb->skb).pid, 1837 if (fib_dump_info(skb, NETLINK_CB(cb->skb).pid,
1848 cb->nlh->nlmsg_seq, 1838 cb->nlh->nlmsg_seq,
@@ -1965,7 +1955,7 @@ struct fib_table * __init fib_hash_init(int id)
1965 trie_main = t; 1955 trie_main = t;
1966 1956
1967 if (id == RT_TABLE_LOCAL) 1957 if (id == RT_TABLE_LOCAL)
1968 printk("IPv4 FIB: Using LC-trie version %s\n", VERSION); 1958 printk(KERN_INFO "IPv4 FIB: Using LC-trie version %s\n", VERSION);
1969 1959
1970 return tb; 1960 return tb;
1971} 1961}
@@ -2029,7 +2019,7 @@ static struct node *fib_trie_get_first(struct fib_trie_iter *iter,
2029 iter->tnode = (struct tnode *) n; 2019 iter->tnode = (struct tnode *) n;
2030 iter->trie = t; 2020 iter->trie = t;
2031 iter->index = 0; 2021 iter->index = 0;
2032 iter->depth = 0; 2022 iter->depth = 1;
2033 return n; 2023 return n;
2034 } 2024 }
2035 return NULL; 2025 return NULL;
@@ -2274,11 +2264,12 @@ static int fib_trie_seq_show(struct seq_file *seq, void *v)
2274 seq_puts(seq, "<local>:\n"); 2264 seq_puts(seq, "<local>:\n");
2275 else 2265 else
2276 seq_puts(seq, "<main>:\n"); 2266 seq_puts(seq, "<main>:\n");
2277 } else { 2267 }
2278 seq_indent(seq, iter->depth-1); 2268 seq_indent(seq, iter->depth-1);
2279 seq_printf(seq, " +-- %d.%d.%d.%d/%d\n", 2269 seq_printf(seq, " +-- %d.%d.%d.%d/%d %d %d %d\n",
2280 NIPQUAD(prf), tn->pos); 2270 NIPQUAD(prf), tn->pos, tn->bits, tn->full_children,
2281 } 2271 tn->empty_children);
2272
2282 } else { 2273 } else {
2283 struct leaf *l = (struct leaf *) n; 2274 struct leaf *l = (struct leaf *) n;
2284 int i; 2275 int i;
@@ -2287,7 +2278,7 @@ static int fib_trie_seq_show(struct seq_file *seq, void *v)
2287 seq_indent(seq, iter->depth); 2278 seq_indent(seq, iter->depth);
2288 seq_printf(seq, " |-- %d.%d.%d.%d\n", NIPQUAD(val)); 2279 seq_printf(seq, " |-- %d.%d.%d.%d\n", NIPQUAD(val));
2289 for (i = 32; i >= 0; i--) { 2280 for (i = 32; i >= 0; i--) {
2290 struct leaf_info *li = find_leaf_info(&l->list, i); 2281 struct leaf_info *li = find_leaf_info(l, i);
2291 if (li) { 2282 if (li) {
2292 struct fib_alias *fa; 2283 struct fib_alias *fa;
2293 list_for_each_entry_rcu(fa, &li->falh, fa_list) { 2284 list_for_each_entry_rcu(fa, &li->falh, fa_list) {
@@ -2383,7 +2374,7 @@ static int fib_route_seq_show(struct seq_file *seq, void *v)
2383 return 0; 2374 return 0;
2384 2375
2385 for (i=32; i>=0; i--) { 2376 for (i=32; i>=0; i--) {
2386 struct leaf_info *li = find_leaf_info(&l->list, i); 2377 struct leaf_info *li = find_leaf_info(l, i);
2387 struct fib_alias *fa; 2378 struct fib_alias *fa;
2388 u32 mask, prefix; 2379 u32 mask, prefix;
2389 2380
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 24eb56ae1b5a..90dca711ac9f 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -188,7 +188,7 @@ struct icmp_err icmp_err_convert[] = {
188 188
189/* Control parameters for ECHO replies. */ 189/* Control parameters for ECHO replies. */
190int sysctl_icmp_echo_ignore_all; 190int sysctl_icmp_echo_ignore_all;
191int sysctl_icmp_echo_ignore_broadcasts; 191int sysctl_icmp_echo_ignore_broadcasts = 1;
192 192
193/* Control parameter - ignore bogus broadcast responses? */ 193/* Control parameter - ignore bogus broadcast responses? */
194int sysctl_icmp_ignore_bogus_error_responses; 194int sysctl_icmp_ignore_bogus_error_responses;
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 44607f4767b8..8b6d3939e1e6 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1323,7 +1323,7 @@ static struct in_device * ip_mc_find_dev(struct ip_mreqn *imr)
1323 } 1323 }
1324 if (dev) { 1324 if (dev) {
1325 imr->imr_ifindex = dev->ifindex; 1325 imr->imr_ifindex = dev->ifindex;
1326 idev = __in_dev_get(dev); 1326 idev = __in_dev_get_rtnl(dev);
1327 } 1327 }
1328 return idev; 1328 return idev;
1329} 1329}
@@ -1603,7 +1603,7 @@ static void ip_mc_clear_src(struct ip_mc_list *pmc)
1603 } 1603 }
1604 pmc->sources = NULL; 1604 pmc->sources = NULL;
1605 pmc->sfmode = MCAST_EXCLUDE; 1605 pmc->sfmode = MCAST_EXCLUDE;
1606 pmc->sfcount[MCAST_EXCLUDE] = 0; 1606 pmc->sfcount[MCAST_INCLUDE] = 0;
1607 pmc->sfcount[MCAST_EXCLUDE] = 1; 1607 pmc->sfcount[MCAST_EXCLUDE] = 1;
1608} 1608}
1609 1609
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index 4d1502a49852..f9076ef3a1a8 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -20,7 +20,7 @@ void __inet_twsk_kill(struct inet_timewait_sock *tw, struct inet_hashinfo *hashi
20 struct inet_bind_hashbucket *bhead; 20 struct inet_bind_hashbucket *bhead;
21 struct inet_bind_bucket *tb; 21 struct inet_bind_bucket *tb;
22 /* Unlink from established hashes. */ 22 /* Unlink from established hashes. */
23 struct inet_ehash_bucket *ehead = &hashinfo->ehash[tw->tw_hashent]; 23 struct inet_ehash_bucket *ehead = inet_ehash_bucket(hashinfo, tw->tw_hash);
24 24
25 write_lock(&ehead->lock); 25 write_lock(&ehead->lock);
26 if (hlist_unhashed(&tw->tw_node)) { 26 if (hlist_unhashed(&tw->tw_node)) {
@@ -60,7 +60,7 @@ void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
60{ 60{
61 const struct inet_sock *inet = inet_sk(sk); 61 const struct inet_sock *inet = inet_sk(sk);
62 const struct inet_connection_sock *icsk = inet_csk(sk); 62 const struct inet_connection_sock *icsk = inet_csk(sk);
63 struct inet_ehash_bucket *ehead = &hashinfo->ehash[sk->sk_hashent]; 63 struct inet_ehash_bucket *ehead = inet_ehash_bucket(hashinfo, sk->sk_hash);
64 struct inet_bind_hashbucket *bhead; 64 struct inet_bind_hashbucket *bhead;
65 /* Step 1: Put TW into bind hash. Original socket stays there too. 65 /* Step 1: Put TW into bind hash. Original socket stays there too.
66 Note, that any socket with inet->num != 0 MUST be bound in 66 Note, that any socket with inet->num != 0 MUST be bound in
@@ -106,7 +106,7 @@ struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, const int stat
106 tw->tw_dport = inet->dport; 106 tw->tw_dport = inet->dport;
107 tw->tw_family = sk->sk_family; 107 tw->tw_family = sk->sk_family;
108 tw->tw_reuse = sk->sk_reuse; 108 tw->tw_reuse = sk->sk_reuse;
109 tw->tw_hashent = sk->sk_hashent; 109 tw->tw_hash = sk->sk_hash;
110 tw->tw_ipv6only = 0; 110 tw->tw_ipv6only = 0;
111 tw->tw_prot = sk->sk_prot_creator; 111 tw->tw_prot = sk->sk_prot_creator;
112 atomic_set(&tw->tw_refcnt, 1); 112 atomic_set(&tw->tw_refcnt, 1);
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index f0d5740d7e22..896ce3f8f53a 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1104,10 +1104,10 @@ static int ipgre_open(struct net_device *dev)
1104 return -EADDRNOTAVAIL; 1104 return -EADDRNOTAVAIL;
1105 dev = rt->u.dst.dev; 1105 dev = rt->u.dst.dev;
1106 ip_rt_put(rt); 1106 ip_rt_put(rt);
1107 if (__in_dev_get(dev) == NULL) 1107 if (__in_dev_get_rtnl(dev) == NULL)
1108 return -EADDRNOTAVAIL; 1108 return -EADDRNOTAVAIL;
1109 t->mlink = dev->ifindex; 1109 t->mlink = dev->ifindex;
1110 ip_mc_inc_group(__in_dev_get(dev), t->parms.iph.daddr); 1110 ip_mc_inc_group(__in_dev_get_rtnl(dev), t->parms.iph.daddr);
1111 } 1111 }
1112 return 0; 1112 return 0;
1113} 1113}
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 9dbf5909f3a6..302b7eb507c9 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -149,7 +149,7 @@ struct net_device *ipmr_new_tunnel(struct vifctl *v)
149 if (err == 0 && (dev = __dev_get_by_name(p.name)) != NULL) { 149 if (err == 0 && (dev = __dev_get_by_name(p.name)) != NULL) {
150 dev->flags |= IFF_MULTICAST; 150 dev->flags |= IFF_MULTICAST;
151 151
152 in_dev = __in_dev_get(dev); 152 in_dev = __in_dev_get_rtnl(dev);
153 if (in_dev == NULL && (in_dev = inetdev_init(dev)) == NULL) 153 if (in_dev == NULL && (in_dev = inetdev_init(dev)) == NULL)
154 goto failure; 154 goto failure;
155 in_dev->cnf.rp_filter = 0; 155 in_dev->cnf.rp_filter = 0;
@@ -278,7 +278,7 @@ static int vif_delete(int vifi)
278 278
279 dev_set_allmulti(dev, -1); 279 dev_set_allmulti(dev, -1);
280 280
281 if ((in_dev = __in_dev_get(dev)) != NULL) { 281 if ((in_dev = __in_dev_get_rtnl(dev)) != NULL) {
282 in_dev->cnf.mc_forwarding--; 282 in_dev->cnf.mc_forwarding--;
283 ip_rt_multicast_event(in_dev); 283 ip_rt_multicast_event(in_dev);
284 } 284 }
@@ -421,7 +421,7 @@ static int vif_add(struct vifctl *vifc, int mrtsock)
421 return -EINVAL; 421 return -EINVAL;
422 } 422 }
423 423
424 if ((in_dev = __in_dev_get(dev)) == NULL) 424 if ((in_dev = __in_dev_get_rtnl(dev)) == NULL)
425 return -EADDRNOTAVAIL; 425 return -EADDRNOTAVAIL;
426 in_dev->cnf.mc_forwarding++; 426 in_dev->cnf.mc_forwarding++;
427 dev_set_allmulti(dev, +1); 427 dev_set_allmulti(dev, +1);
diff --git a/net/ipv4/ipvs/ip_vs_conn.c b/net/ipv4/ipvs/ip_vs_conn.c
index e11952ea17af..f828fa2eb7de 100644
--- a/net/ipv4/ipvs/ip_vs_conn.c
+++ b/net/ipv4/ipvs/ip_vs_conn.c
@@ -196,6 +196,7 @@ static inline struct ip_vs_conn *__ip_vs_conn_in_get
196 list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) { 196 list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) {
197 if (s_addr==cp->caddr && s_port==cp->cport && 197 if (s_addr==cp->caddr && s_port==cp->cport &&
198 d_port==cp->vport && d_addr==cp->vaddr && 198 d_port==cp->vport && d_addr==cp->vaddr &&
199 ((!s_port) ^ (!(cp->flags & IP_VS_CONN_F_NO_CPORT))) &&
199 protocol==cp->protocol) { 200 protocol==cp->protocol) {
200 /* HIT */ 201 /* HIT */
201 atomic_inc(&cp->refcnt); 202 atomic_inc(&cp->refcnt);
@@ -227,6 +228,40 @@ struct ip_vs_conn *ip_vs_conn_in_get
227 return cp; 228 return cp;
228} 229}
229 230
231/* Get reference to connection template */
232struct ip_vs_conn *ip_vs_ct_in_get
233(int protocol, __u32 s_addr, __u16 s_port, __u32 d_addr, __u16 d_port)
234{
235 unsigned hash;
236 struct ip_vs_conn *cp;
237
238 hash = ip_vs_conn_hashkey(protocol, s_addr, s_port);
239
240 ct_read_lock(hash);
241
242 list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) {
243 if (s_addr==cp->caddr && s_port==cp->cport &&
244 d_port==cp->vport && d_addr==cp->vaddr &&
245 cp->flags & IP_VS_CONN_F_TEMPLATE &&
246 protocol==cp->protocol) {
247 /* HIT */
248 atomic_inc(&cp->refcnt);
249 goto out;
250 }
251 }
252 cp = NULL;
253
254 out:
255 ct_read_unlock(hash);
256
257 IP_VS_DBG(7, "template lookup/in %s %u.%u.%u.%u:%d->%u.%u.%u.%u:%d %s\n",
258 ip_vs_proto_name(protocol),
259 NIPQUAD(s_addr), ntohs(s_port),
260 NIPQUAD(d_addr), ntohs(d_port),
261 cp?"hit":"not hit");
262
263 return cp;
264}
230 265
231/* 266/*
232 * Gets ip_vs_conn associated with supplied parameters in the ip_vs_conn_tab. 267 * Gets ip_vs_conn associated with supplied parameters in the ip_vs_conn_tab.
@@ -367,7 +402,7 @@ ip_vs_bind_dest(struct ip_vs_conn *cp, struct ip_vs_dest *dest)
367 atomic_read(&dest->refcnt)); 402 atomic_read(&dest->refcnt));
368 403
369 /* Update the connection counters */ 404 /* Update the connection counters */
370 if (cp->cport || (cp->flags & IP_VS_CONN_F_NO_CPORT)) { 405 if (!(cp->flags & IP_VS_CONN_F_TEMPLATE)) {
371 /* It is a normal connection, so increase the inactive 406 /* It is a normal connection, so increase the inactive
372 connection counter because it is in TCP SYNRECV 407 connection counter because it is in TCP SYNRECV
373 state (inactive) or other protocol inacive state */ 408 state (inactive) or other protocol inacive state */
@@ -406,7 +441,7 @@ static inline void ip_vs_unbind_dest(struct ip_vs_conn *cp)
406 atomic_read(&dest->refcnt)); 441 atomic_read(&dest->refcnt));
407 442
408 /* Update the connection counters */ 443 /* Update the connection counters */
409 if (cp->cport || (cp->flags & IP_VS_CONN_F_NO_CPORT)) { 444 if (!(cp->flags & IP_VS_CONN_F_TEMPLATE)) {
410 /* It is a normal connection, so decrease the inactconns 445 /* It is a normal connection, so decrease the inactconns
411 or activeconns counter */ 446 or activeconns counter */
412 if (cp->flags & IP_VS_CONN_F_INACTIVE) { 447 if (cp->flags & IP_VS_CONN_F_INACTIVE) {
@@ -467,7 +502,7 @@ int ip_vs_check_template(struct ip_vs_conn *ct)
467 /* 502 /*
468 * Invalidate the connection template 503 * Invalidate the connection template
469 */ 504 */
470 if (ct->cport) { 505 if (ct->vport != 65535) {
471 if (ip_vs_conn_unhash(ct)) { 506 if (ip_vs_conn_unhash(ct)) {
472 ct->dport = 65535; 507 ct->dport = 65535;
473 ct->vport = 65535; 508 ct->vport = 65535;
@@ -776,7 +811,7 @@ void ip_vs_random_dropentry(void)
776 ct_write_lock_bh(hash); 811 ct_write_lock_bh(hash);
777 812
778 list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) { 813 list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) {
779 if (!cp->cport && !(cp->flags & IP_VS_CONN_F_NO_CPORT)) 814 if (cp->flags & IP_VS_CONN_F_TEMPLATE)
780 /* connection template */ 815 /* connection template */
781 continue; 816 continue;
782 817
diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c
index 3ac7eeca04ac..981cc3244ef2 100644
--- a/net/ipv4/ipvs/ip_vs_core.c
+++ b/net/ipv4/ipvs/ip_vs_core.c
@@ -243,10 +243,10 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
243 if (ports[1] == svc->port) { 243 if (ports[1] == svc->port) {
244 /* Check if a template already exists */ 244 /* Check if a template already exists */
245 if (svc->port != FTPPORT) 245 if (svc->port != FTPPORT)
246 ct = ip_vs_conn_in_get(iph->protocol, snet, 0, 246 ct = ip_vs_ct_in_get(iph->protocol, snet, 0,
247 iph->daddr, ports[1]); 247 iph->daddr, ports[1]);
248 else 248 else
249 ct = ip_vs_conn_in_get(iph->protocol, snet, 0, 249 ct = ip_vs_ct_in_get(iph->protocol, snet, 0,
250 iph->daddr, 0); 250 iph->daddr, 0);
251 251
252 if (!ct || !ip_vs_check_template(ct)) { 252 if (!ct || !ip_vs_check_template(ct)) {
@@ -272,14 +272,14 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
272 iph->daddr, 272 iph->daddr,
273 ports[1], 273 ports[1],
274 dest->addr, dest->port, 274 dest->addr, dest->port,
275 0, 275 IP_VS_CONN_F_TEMPLATE,
276 dest); 276 dest);
277 else 277 else
278 ct = ip_vs_conn_new(iph->protocol, 278 ct = ip_vs_conn_new(iph->protocol,
279 snet, 0, 279 snet, 0,
280 iph->daddr, 0, 280 iph->daddr, 0,
281 dest->addr, 0, 281 dest->addr, 0,
282 0, 282 IP_VS_CONN_F_TEMPLATE,
283 dest); 283 dest);
284 if (ct == NULL) 284 if (ct == NULL)
285 return NULL; 285 return NULL;
@@ -298,10 +298,10 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
298 * port zero template: <protocol,caddr,0,vaddr,0,daddr,0> 298 * port zero template: <protocol,caddr,0,vaddr,0,daddr,0>
299 */ 299 */
300 if (svc->fwmark) 300 if (svc->fwmark)
301 ct = ip_vs_conn_in_get(IPPROTO_IP, snet, 0, 301 ct = ip_vs_ct_in_get(IPPROTO_IP, snet, 0,
302 htonl(svc->fwmark), 0); 302 htonl(svc->fwmark), 0);
303 else 303 else
304 ct = ip_vs_conn_in_get(iph->protocol, snet, 0, 304 ct = ip_vs_ct_in_get(iph->protocol, snet, 0,
305 iph->daddr, 0); 305 iph->daddr, 0);
306 306
307 if (!ct || !ip_vs_check_template(ct)) { 307 if (!ct || !ip_vs_check_template(ct)) {
@@ -326,14 +326,14 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
326 snet, 0, 326 snet, 0,
327 htonl(svc->fwmark), 0, 327 htonl(svc->fwmark), 0,
328 dest->addr, 0, 328 dest->addr, 0,
329 0, 329 IP_VS_CONN_F_TEMPLATE,
330 dest); 330 dest);
331 else 331 else
332 ct = ip_vs_conn_new(iph->protocol, 332 ct = ip_vs_conn_new(iph->protocol,
333 snet, 0, 333 snet, 0,
334 iph->daddr, 0, 334 iph->daddr, 0,
335 dest->addr, 0, 335 dest->addr, 0,
336 0, 336 IP_VS_CONN_F_TEMPLATE,
337 dest); 337 dest);
338 if (ct == NULL) 338 if (ct == NULL)
339 return NULL; 339 return NULL;
diff --git a/net/ipv4/ipvs/ip_vs_sync.c b/net/ipv4/ipvs/ip_vs_sync.c
index 574d1f509b46..2e5ced3d8062 100644
--- a/net/ipv4/ipvs/ip_vs_sync.c
+++ b/net/ipv4/ipvs/ip_vs_sync.c
@@ -297,16 +297,24 @@ static void ip_vs_process_message(const char *buffer, const size_t buflen)
297 297
298 p = (char *)buffer + sizeof(struct ip_vs_sync_mesg); 298 p = (char *)buffer + sizeof(struct ip_vs_sync_mesg);
299 for (i=0; i<m->nr_conns; i++) { 299 for (i=0; i<m->nr_conns; i++) {
300 unsigned flags;
301
300 s = (struct ip_vs_sync_conn *)p; 302 s = (struct ip_vs_sync_conn *)p;
301 cp = ip_vs_conn_in_get(s->protocol, 303 flags = ntohs(s->flags);
302 s->caddr, s->cport, 304 if (!(flags & IP_VS_CONN_F_TEMPLATE))
303 s->vaddr, s->vport); 305 cp = ip_vs_conn_in_get(s->protocol,
306 s->caddr, s->cport,
307 s->vaddr, s->vport);
308 else
309 cp = ip_vs_ct_in_get(s->protocol,
310 s->caddr, s->cport,
311 s->vaddr, s->vport);
304 if (!cp) { 312 if (!cp) {
305 cp = ip_vs_conn_new(s->protocol, 313 cp = ip_vs_conn_new(s->protocol,
306 s->caddr, s->cport, 314 s->caddr, s->cport,
307 s->vaddr, s->vport, 315 s->vaddr, s->vport,
308 s->daddr, s->dport, 316 s->daddr, s->dport,
309 ntohs(s->flags), NULL); 317 flags, NULL);
310 if (!cp) { 318 if (!cp) {
311 IP_VS_ERR("ip_vs_conn_new failed\n"); 319 IP_VS_ERR("ip_vs_conn_new failed\n");
312 return; 320 return;
@@ -315,11 +323,11 @@ static void ip_vs_process_message(const char *buffer, const size_t buflen)
315 } else if (!cp->dest) { 323 } else if (!cp->dest) {
316 /* it is an entry created by the synchronization */ 324 /* it is an entry created by the synchronization */
317 cp->state = ntohs(s->state); 325 cp->state = ntohs(s->state);
318 cp->flags = ntohs(s->flags) | IP_VS_CONN_F_HASHED; 326 cp->flags = flags | IP_VS_CONN_F_HASHED;
319 } /* Note that we don't touch its state and flags 327 } /* Note that we don't touch its state and flags
320 if it is a normal entry. */ 328 if it is a normal entry. */
321 329
322 if (ntohs(s->flags) & IP_VS_CONN_F_SEQ_MASK) { 330 if (flags & IP_VS_CONN_F_SEQ_MASK) {
323 opt = (struct ip_vs_sync_conn_options *)&s[1]; 331 opt = (struct ip_vs_sync_conn_options *)&s[1];
324 memcpy(&cp->in_seq, opt, sizeof(*opt)); 332 memcpy(&cp->in_seq, opt, sizeof(*opt));
325 p += FULL_CONN_SIZE; 333 p += FULL_CONN_SIZE;
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index 30aa8e2ee214..2cd7e7d1ac90 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -51,6 +51,14 @@ config IP_NF_CONNTRACK_EVENTS
51 51
52 IF unsure, say `N'. 52 IF unsure, say `N'.
53 53
54config IP_NF_CONNTRACK_NETLINK
55 tristate 'Connection tracking netlink interface'
56 depends on IP_NF_CONNTRACK && NETFILTER_NETLINK
57 depends on IP_NF_CONNTRACK!=y || NETFILTER_NETLINK!=m
58 help
59 This option enables support for a netlink-based userspace interface
60
61
54config IP_NF_CT_PROTO_SCTP 62config IP_NF_CT_PROTO_SCTP
55 tristate 'SCTP protocol connection tracking support (EXPERIMENTAL)' 63 tristate 'SCTP protocol connection tracking support (EXPERIMENTAL)'
56 depends on IP_NF_CONNTRACK && EXPERIMENTAL 64 depends on IP_NF_CONNTRACK && EXPERIMENTAL
@@ -129,6 +137,22 @@ config IP_NF_AMANDA
129 137
130 To compile it as a module, choose M here. If unsure, say Y. 138 To compile it as a module, choose M here. If unsure, say Y.
131 139
140config IP_NF_PPTP
141 tristate 'PPTP protocol support'
142 help
143 This module adds support for PPTP (Point to Point Tunnelling
144 Protocol, RFC2637) conncection tracking and NAT.
145
146 If you are running PPTP sessions over a stateful firewall or NAT
147 box, you may want to enable this feature.
148
149 Please note that not all PPTP modes of operation are supported yet.
150 For more info, read top of the file
151 net/ipv4/netfilter/ip_conntrack_pptp.c
152
153 If you want to compile it as a module, say M here and read
154 Documentation/modules.txt. If unsure, say `N'.
155
132config IP_NF_QUEUE 156config IP_NF_QUEUE
133 tristate "IP Userspace queueing via NETLINK (OBSOLETE)" 157 tristate "IP Userspace queueing via NETLINK (OBSOLETE)"
134 help 158 help
@@ -513,6 +537,17 @@ config IP_NF_TARGET_TCPMSS
513 537
514 To compile it as a module, choose M here. If unsure, say N. 538 To compile it as a module, choose M here. If unsure, say N.
515 539
540config IP_NF_TARGET_NFQUEUE
541 tristate "NFQUEUE Target Support"
542 depends on IP_NF_IPTABLES
543 help
544 This Target replaced the old obsolete QUEUE target.
545
546 As opposed to QUEUE, it supports 65535 different queues,
547 not just one.
548
549 To compile it as a module, choose M here. If unsure, say N.
550
516# NAT + specific targets 551# NAT + specific targets
517config IP_NF_NAT 552config IP_NF_NAT
518 tristate "Full NAT" 553 tristate "Full NAT"
@@ -613,6 +648,12 @@ config IP_NF_NAT_AMANDA
613 default IP_NF_NAT if IP_NF_AMANDA=y 648 default IP_NF_NAT if IP_NF_AMANDA=y
614 default m if IP_NF_AMANDA=m 649 default m if IP_NF_AMANDA=m
615 650
651config IP_NF_NAT_PPTP
652 tristate
653 depends on IP_NF_NAT!=n && IP_NF_PPTP!=n
654 default IP_NF_NAT if IP_NF_PPTP=y
655 default m if IP_NF_PPTP=m
656
616# mangle + specific targets 657# mangle + specific targets
617config IP_NF_MANGLE 658config IP_NF_MANGLE
618 tristate "Packet mangling" 659 tristate "Packet mangling"
@@ -774,11 +815,5 @@ config IP_NF_ARP_MANGLE
774 Allows altering the ARP packet payload: source and destination 815 Allows altering the ARP packet payload: source and destination
775 hardware and network addresses. 816 hardware and network addresses.
776 817
777config IP_NF_CONNTRACK_NETLINK
778 tristate 'Connection tracking netlink interface'
779 depends on IP_NF_CONNTRACK && NETFILTER_NETLINK
780 help
781 This option enables support for a netlink-based userspace interface
782
783endmenu 818endmenu
784 819
diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile
index 1ba0db746817..dab4b58dd31e 100644
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
@@ -4,7 +4,11 @@
4 4
5# objects for the standalone - connection tracking / NAT 5# objects for the standalone - connection tracking / NAT
6ip_conntrack-objs := ip_conntrack_standalone.o ip_conntrack_core.o ip_conntrack_proto_generic.o ip_conntrack_proto_tcp.o ip_conntrack_proto_udp.o ip_conntrack_proto_icmp.o 6ip_conntrack-objs := ip_conntrack_standalone.o ip_conntrack_core.o ip_conntrack_proto_generic.o ip_conntrack_proto_tcp.o ip_conntrack_proto_udp.o ip_conntrack_proto_icmp.o
7iptable_nat-objs := ip_nat_standalone.o ip_nat_rule.o ip_nat_core.o ip_nat_helper.o ip_nat_proto_unknown.o ip_nat_proto_tcp.o ip_nat_proto_udp.o ip_nat_proto_icmp.o 7ip_nat-objs := ip_nat_core.o ip_nat_helper.o ip_nat_proto_unknown.o ip_nat_proto_tcp.o ip_nat_proto_udp.o ip_nat_proto_icmp.o
8iptable_nat-objs := ip_nat_rule.o ip_nat_standalone.o
9
10ip_conntrack_pptp-objs := ip_conntrack_helper_pptp.o ip_conntrack_proto_gre.o
11ip_nat_pptp-objs := ip_nat_helper_pptp.o ip_nat_proto_gre.o
8 12
9# connection tracking 13# connection tracking
10obj-$(CONFIG_IP_NF_CONNTRACK) += ip_conntrack.o 14obj-$(CONFIG_IP_NF_CONNTRACK) += ip_conntrack.o
@@ -17,6 +21,7 @@ obj-$(CONFIG_IP_NF_CONNTRACK_NETLINK) += ip_conntrack_netlink.o
17obj-$(CONFIG_IP_NF_CT_PROTO_SCTP) += ip_conntrack_proto_sctp.o 21obj-$(CONFIG_IP_NF_CT_PROTO_SCTP) += ip_conntrack_proto_sctp.o
18 22
19# connection tracking helpers 23# connection tracking helpers
24obj-$(CONFIG_IP_NF_PPTP) += ip_conntrack_pptp.o
20obj-$(CONFIG_IP_NF_AMANDA) += ip_conntrack_amanda.o 25obj-$(CONFIG_IP_NF_AMANDA) += ip_conntrack_amanda.o
21obj-$(CONFIG_IP_NF_TFTP) += ip_conntrack_tftp.o 26obj-$(CONFIG_IP_NF_TFTP) += ip_conntrack_tftp.o
22obj-$(CONFIG_IP_NF_FTP) += ip_conntrack_ftp.o 27obj-$(CONFIG_IP_NF_FTP) += ip_conntrack_ftp.o
@@ -24,6 +29,7 @@ obj-$(CONFIG_IP_NF_IRC) += ip_conntrack_irc.o
24obj-$(CONFIG_IP_NF_NETBIOS_NS) += ip_conntrack_netbios_ns.o 29obj-$(CONFIG_IP_NF_NETBIOS_NS) += ip_conntrack_netbios_ns.o
25 30
26# NAT helpers 31# NAT helpers
32obj-$(CONFIG_IP_NF_NAT_PPTP) += ip_nat_pptp.o
27obj-$(CONFIG_IP_NF_NAT_AMANDA) += ip_nat_amanda.o 33obj-$(CONFIG_IP_NF_NAT_AMANDA) += ip_nat_amanda.o
28obj-$(CONFIG_IP_NF_NAT_TFTP) += ip_nat_tftp.o 34obj-$(CONFIG_IP_NF_NAT_TFTP) += ip_nat_tftp.o
29obj-$(CONFIG_IP_NF_NAT_FTP) += ip_nat_ftp.o 35obj-$(CONFIG_IP_NF_NAT_FTP) += ip_nat_ftp.o
@@ -35,7 +41,7 @@ obj-$(CONFIG_IP_NF_IPTABLES) += ip_tables.o
35# the three instances of ip_tables 41# the three instances of ip_tables
36obj-$(CONFIG_IP_NF_FILTER) += iptable_filter.o 42obj-$(CONFIG_IP_NF_FILTER) += iptable_filter.o
37obj-$(CONFIG_IP_NF_MANGLE) += iptable_mangle.o 43obj-$(CONFIG_IP_NF_MANGLE) += iptable_mangle.o
38obj-$(CONFIG_IP_NF_NAT) += iptable_nat.o 44obj-$(CONFIG_IP_NF_NAT) += iptable_nat.o ip_nat.o
39obj-$(CONFIG_IP_NF_RAW) += iptable_raw.o 45obj-$(CONFIG_IP_NF_RAW) += iptable_raw.o
40 46
41# matches 47# matches
@@ -87,6 +93,7 @@ obj-$(CONFIG_IP_NF_TARGET_TCPMSS) += ipt_TCPMSS.o
87obj-$(CONFIG_IP_NF_TARGET_NOTRACK) += ipt_NOTRACK.o 93obj-$(CONFIG_IP_NF_TARGET_NOTRACK) += ipt_NOTRACK.o
88obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o 94obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
89obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o 95obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o
96obj-$(CONFIG_IP_NF_TARGET_NFQUEUE) += ipt_NFQUEUE.o
90 97
91# generic ARP tables 98# generic ARP tables
92obj-$(CONFIG_IP_NF_ARPTABLES) += arp_tables.o 99obj-$(CONFIG_IP_NF_ARPTABLES) += arp_tables.o
@@ -96,4 +103,3 @@ obj-$(CONFIG_IP_NF_ARP_MANGLE) += arpt_mangle.o
96obj-$(CONFIG_IP_NF_ARPFILTER) += arptable_filter.o 103obj-$(CONFIG_IP_NF_ARPFILTER) += arptable_filter.o
97 104
98obj-$(CONFIG_IP_NF_QUEUE) += ip_queue.o 105obj-$(CONFIG_IP_NF_QUEUE) += ip_queue.o
99obj-$(CONFIG_NETFILTER_NETLINK_QUEUE) += ipt_NFQUEUE.o
diff --git a/net/ipv4/netfilter/ip_conntrack_amanda.c b/net/ipv4/netfilter/ip_conntrack_amanda.c
index dc20881004bc..fa3f914117ec 100644
--- a/net/ipv4/netfilter/ip_conntrack_amanda.c
+++ b/net/ipv4/netfilter/ip_conntrack_amanda.c
@@ -65,7 +65,7 @@ static int help(struct sk_buff **pskb,
65 65
66 /* increase the UDP timeout of the master connection as replies from 66 /* increase the UDP timeout of the master connection as replies from
67 * Amanda clients to the server can be quite delayed */ 67 * Amanda clients to the server can be quite delayed */
68 ip_ct_refresh_acct(ct, ctinfo, NULL, master_timeout * HZ); 68 ip_ct_refresh(ct, *pskb, master_timeout * HZ);
69 69
70 /* No data? */ 70 /* No data? */
71 dataoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); 71 dataoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr);
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c
index 19cba16e6e1e..ea65dd3e517a 100644
--- a/net/ipv4/netfilter/ip_conntrack_core.c
+++ b/net/ipv4/netfilter/ip_conntrack_core.c
@@ -233,7 +233,7 @@ __ip_conntrack_expect_find(const struct ip_conntrack_tuple *tuple)
233 233
234/* Just find a expectation corresponding to a tuple. */ 234/* Just find a expectation corresponding to a tuple. */
235struct ip_conntrack_expect * 235struct ip_conntrack_expect *
236ip_conntrack_expect_find_get(const struct ip_conntrack_tuple *tuple) 236ip_conntrack_expect_find(const struct ip_conntrack_tuple *tuple)
237{ 237{
238 struct ip_conntrack_expect *i; 238 struct ip_conntrack_expect *i;
239 239
@@ -1112,42 +1112,46 @@ void ip_conntrack_helper_unregister(struct ip_conntrack_helper *me)
1112 synchronize_net(); 1112 synchronize_net();
1113} 1113}
1114 1114
1115static inline void ct_add_counters(struct ip_conntrack *ct, 1115/* Refresh conntrack for this many jiffies and do accounting if do_acct is 1 */
1116 enum ip_conntrack_info ctinfo, 1116void __ip_ct_refresh_acct(struct ip_conntrack *ct,
1117 const struct sk_buff *skb)
1118{
1119#ifdef CONFIG_IP_NF_CT_ACCT
1120 if (skb) {
1121 ct->counters[CTINFO2DIR(ctinfo)].packets++;
1122 ct->counters[CTINFO2DIR(ctinfo)].bytes +=
1123 ntohs(skb->nh.iph->tot_len);
1124 }
1125#endif
1126}
1127
1128/* Refresh conntrack for this many jiffies and do accounting (if skb != NULL) */
1129void ip_ct_refresh_acct(struct ip_conntrack *ct,
1130 enum ip_conntrack_info ctinfo, 1117 enum ip_conntrack_info ctinfo,
1131 const struct sk_buff *skb, 1118 const struct sk_buff *skb,
1132 unsigned long extra_jiffies) 1119 unsigned long extra_jiffies,
1120 int do_acct)
1133{ 1121{
1122 int do_event = 0;
1123
1134 IP_NF_ASSERT(ct->timeout.data == (unsigned long)ct); 1124 IP_NF_ASSERT(ct->timeout.data == (unsigned long)ct);
1125 IP_NF_ASSERT(skb);
1126
1127 write_lock_bh(&ip_conntrack_lock);
1135 1128
1136 /* If not in hash table, timer will not be active yet */ 1129 /* If not in hash table, timer will not be active yet */
1137 if (!is_confirmed(ct)) { 1130 if (!is_confirmed(ct)) {
1138 ct->timeout.expires = extra_jiffies; 1131 ct->timeout.expires = extra_jiffies;
1139 ct_add_counters(ct, ctinfo, skb); 1132 do_event = 1;
1140 } else { 1133 } else {
1141 write_lock_bh(&ip_conntrack_lock);
1142 /* Need del_timer for race avoidance (may already be dying). */ 1134 /* Need del_timer for race avoidance (may already be dying). */
1143 if (del_timer(&ct->timeout)) { 1135 if (del_timer(&ct->timeout)) {
1144 ct->timeout.expires = jiffies + extra_jiffies; 1136 ct->timeout.expires = jiffies + extra_jiffies;
1145 add_timer(&ct->timeout); 1137 add_timer(&ct->timeout);
1146 ip_conntrack_event_cache(IPCT_REFRESH, skb); 1138 do_event = 1;
1147 } 1139 }
1148 ct_add_counters(ct, ctinfo, skb);
1149 write_unlock_bh(&ip_conntrack_lock);
1150 } 1140 }
1141
1142#ifdef CONFIG_IP_NF_CT_ACCT
1143 if (do_acct) {
1144 ct->counters[CTINFO2DIR(ctinfo)].packets++;
1145 ct->counters[CTINFO2DIR(ctinfo)].bytes +=
1146 ntohs(skb->nh.iph->tot_len);
1147 }
1148#endif
1149
1150 write_unlock_bh(&ip_conntrack_lock);
1151
1152 /* must be unlocked when calling event cache */
1153 if (do_event)
1154 ip_conntrack_event_cache(IPCT_REFRESH, skb);
1151} 1155}
1152 1156
1153#if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \ 1157#if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \
diff --git a/net/ipv4/netfilter/ip_conntrack_ftp.c b/net/ipv4/netfilter/ip_conntrack_ftp.c
index 1b79ec36085f..d77d6b3f5f80 100644
--- a/net/ipv4/netfilter/ip_conntrack_ftp.c
+++ b/net/ipv4/netfilter/ip_conntrack_ftp.c
@@ -29,9 +29,9 @@ static char *ftp_buffer;
29static DEFINE_SPINLOCK(ip_ftp_lock); 29static DEFINE_SPINLOCK(ip_ftp_lock);
30 30
31#define MAX_PORTS 8 31#define MAX_PORTS 8
32static int ports[MAX_PORTS]; 32static short ports[MAX_PORTS];
33static int ports_c; 33static int ports_c;
34module_param_array(ports, int, &ports_c, 0400); 34module_param_array(ports, short, &ports_c, 0400);
35 35
36static int loose; 36static int loose;
37module_param(loose, int, 0600); 37module_param(loose, int, 0600);
@@ -450,7 +450,7 @@ out_update_nl:
450} 450}
451 451
452static struct ip_conntrack_helper ftp[MAX_PORTS]; 452static struct ip_conntrack_helper ftp[MAX_PORTS];
453static char ftp_names[MAX_PORTS][10]; 453static char ftp_names[MAX_PORTS][sizeof("ftp-65535")];
454 454
455/* Not __exit: called from init() */ 455/* Not __exit: called from init() */
456static void fini(void) 456static void fini(void)
diff --git a/net/ipv4/netfilter/ip_conntrack_helper_pptp.c b/net/ipv4/netfilter/ip_conntrack_helper_pptp.c
new file mode 100644
index 000000000000..926a6684643d
--- /dev/null
+++ b/net/ipv4/netfilter/ip_conntrack_helper_pptp.c
@@ -0,0 +1,806 @@
1/*
2 * ip_conntrack_pptp.c - Version 3.0
3 *
4 * Connection tracking support for PPTP (Point to Point Tunneling Protocol).
5 * PPTP is a a protocol for creating virtual private networks.
6 * It is a specification defined by Microsoft and some vendors
7 * working with Microsoft. PPTP is built on top of a modified
8 * version of the Internet Generic Routing Encapsulation Protocol.
9 * GRE is defined in RFC 1701 and RFC 1702. Documentation of
10 * PPTP can be found in RFC 2637
11 *
12 * (C) 2000-2005 by Harald Welte <laforge@gnumonks.org>
13 *
14 * Development of this code funded by Astaro AG (http://www.astaro.com/)
15 *
16 * Limitations:
17 * - We blindly assume that control connections are always
18 * established in PNS->PAC direction. This is a violation
19 * of RFFC2673
20 * - We can only support one single call within each session
21 *
22 * TODO:
23 * - testing of incoming PPTP calls
24 *
25 * Changes:
26 * 2002-02-05 - Version 1.3
27 * - Call ip_conntrack_unexpect_related() from
28 * pptp_destroy_siblings() to destroy expectations in case
29 * CALL_DISCONNECT_NOTIFY or tcp fin packet was seen
30 * (Philip Craig <philipc@snapgear.com>)
31 * - Add Version information at module loadtime
32 * 2002-02-10 - Version 1.6
33 * - move to C99 style initializers
34 * - remove second expectation if first arrives
35 * 2004-10-22 - Version 2.0
36 * - merge Mandrake's 2.6.x port with recent 2.6.x API changes
37 * - fix lots of linear skb assumptions from Mandrake's port
38 * 2005-06-10 - Version 2.1
39 * - use ip_conntrack_expect_free() instead of kfree() on the
40 * expect's (which are from the slab for quite some time)
41 * 2005-06-10 - Version 3.0
42 * - port helper to post-2.6.11 API changes,
43 * funded by Oxcoda NetBox Blue (http://www.netboxblue.com/)
44 * 2005-07-30 - Version 3.1
45 * - port helper to 2.6.13 API changes
46 *
47 */
48
49#include <linux/config.h>
50#include <linux/module.h>
51#include <linux/netfilter.h>
52#include <linux/ip.h>
53#include <net/checksum.h>
54#include <net/tcp.h>
55
56#include <linux/netfilter_ipv4/ip_conntrack.h>
57#include <linux/netfilter_ipv4/ip_conntrack_core.h>
58#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
59#include <linux/netfilter_ipv4/ip_conntrack_proto_gre.h>
60#include <linux/netfilter_ipv4/ip_conntrack_pptp.h>
61
62#define IP_CT_PPTP_VERSION "3.1"
63
64MODULE_LICENSE("GPL");
65MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
66MODULE_DESCRIPTION("Netfilter connection tracking helper module for PPTP");
67
68static DEFINE_SPINLOCK(ip_pptp_lock);
69
70int
71(*ip_nat_pptp_hook_outbound)(struct sk_buff **pskb,
72 struct ip_conntrack *ct,
73 enum ip_conntrack_info ctinfo,
74 struct PptpControlHeader *ctlh,
75 union pptp_ctrl_union *pptpReq);
76
77int
78(*ip_nat_pptp_hook_inbound)(struct sk_buff **pskb,
79 struct ip_conntrack *ct,
80 enum ip_conntrack_info ctinfo,
81 struct PptpControlHeader *ctlh,
82 union pptp_ctrl_union *pptpReq);
83
84int
85(*ip_nat_pptp_hook_exp_gre)(struct ip_conntrack_expect *expect_orig,
86 struct ip_conntrack_expect *expect_reply);
87
88void
89(*ip_nat_pptp_hook_expectfn)(struct ip_conntrack *ct,
90 struct ip_conntrack_expect *exp);
91
92#if 0
93/* PptpControlMessageType names */
94const char *pptp_msg_name[] = {
95 "UNKNOWN_MESSAGE",
96 "START_SESSION_REQUEST",
97 "START_SESSION_REPLY",
98 "STOP_SESSION_REQUEST",
99 "STOP_SESSION_REPLY",
100 "ECHO_REQUEST",
101 "ECHO_REPLY",
102 "OUT_CALL_REQUEST",
103 "OUT_CALL_REPLY",
104 "IN_CALL_REQUEST",
105 "IN_CALL_REPLY",
106 "IN_CALL_CONNECT",
107 "CALL_CLEAR_REQUEST",
108 "CALL_DISCONNECT_NOTIFY",
109 "WAN_ERROR_NOTIFY",
110 "SET_LINK_INFO"
111};
112EXPORT_SYMBOL(pptp_msg_name);
113#define DEBUGP(format, args...) printk(KERN_DEBUG "%s:%s: " format, __FILE__, __FUNCTION__, ## args)
114#else
115#define DEBUGP(format, args...)
116#endif
117
118#define SECS *HZ
119#define MINS * 60 SECS
120#define HOURS * 60 MINS
121
122#define PPTP_GRE_TIMEOUT (10 MINS)
123#define PPTP_GRE_STREAM_TIMEOUT (5 HOURS)
124
125static void pptp_expectfn(struct ip_conntrack *ct,
126 struct ip_conntrack_expect *exp)
127{
128 DEBUGP("increasing timeouts\n");
129
130 /* increase timeout of GRE data channel conntrack entry */
131 ct->proto.gre.timeout = PPTP_GRE_TIMEOUT;
132 ct->proto.gre.stream_timeout = PPTP_GRE_STREAM_TIMEOUT;
133
134 /* Can you see how rusty this code is, compared with the pre-2.6.11
135 * one? That's what happened to my shiny newnat of 2002 ;( -HW */
136
137 if (!ip_nat_pptp_hook_expectfn) {
138 struct ip_conntrack_tuple inv_t;
139 struct ip_conntrack_expect *exp_other;
140
141 /* obviously this tuple inversion only works until you do NAT */
142 invert_tuplepr(&inv_t, &exp->tuple);
143 DEBUGP("trying to unexpect other dir: ");
144 DUMP_TUPLE(&inv_t);
145
146 exp_other = ip_conntrack_expect_find(&inv_t);
147 if (exp_other) {
148 /* delete other expectation. */
149 DEBUGP("found\n");
150 ip_conntrack_unexpect_related(exp_other);
151 ip_conntrack_expect_put(exp_other);
152 } else {
153 DEBUGP("not found\n");
154 }
155 } else {
156 /* we need more than simple inversion */
157 ip_nat_pptp_hook_expectfn(ct, exp);
158 }
159}
160
161static int destroy_sibling_or_exp(const struct ip_conntrack_tuple *t)
162{
163 struct ip_conntrack_tuple_hash *h;
164 struct ip_conntrack_expect *exp;
165
166 DEBUGP("trying to timeout ct or exp for tuple ");
167 DUMP_TUPLE(t);
168
169 h = ip_conntrack_find_get(t, NULL);
170 if (h) {
171 struct ip_conntrack *sibling = tuplehash_to_ctrack(h);
172 DEBUGP("setting timeout of conntrack %p to 0\n", sibling);
173 sibling->proto.gre.timeout = 0;
174 sibling->proto.gre.stream_timeout = 0;
175 if (del_timer(&sibling->timeout))
176 sibling->timeout.function((unsigned long)sibling);
177 ip_conntrack_put(sibling);
178 return 1;
179 } else {
180 exp = ip_conntrack_expect_find(t);
181 if (exp) {
182 DEBUGP("unexpect_related of expect %p\n", exp);
183 ip_conntrack_unexpect_related(exp);
184 ip_conntrack_expect_put(exp);
185 return 1;
186 }
187 }
188
189 return 0;
190}
191
192
193/* timeout GRE data connections */
194static void pptp_destroy_siblings(struct ip_conntrack *ct)
195{
196 struct ip_conntrack_tuple t;
197
198 /* Since ct->sibling_list has literally rusted away in 2.6.11,
199 * we now need another way to find out about our sibling
200 * contrack and expects... -HW */
201
202 /* try original (pns->pac) tuple */
203 memcpy(&t, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple, sizeof(t));
204 t.dst.protonum = IPPROTO_GRE;
205 t.src.u.gre.key = htons(ct->help.ct_pptp_info.pns_call_id);
206 t.dst.u.gre.key = htons(ct->help.ct_pptp_info.pac_call_id);
207
208 if (!destroy_sibling_or_exp(&t))
209 DEBUGP("failed to timeout original pns->pac ct/exp\n");
210
211 /* try reply (pac->pns) tuple */
212 memcpy(&t, &ct->tuplehash[IP_CT_DIR_REPLY].tuple, sizeof(t));
213 t.dst.protonum = IPPROTO_GRE;
214 t.src.u.gre.key = htons(ct->help.ct_pptp_info.pac_call_id);
215 t.dst.u.gre.key = htons(ct->help.ct_pptp_info.pns_call_id);
216
217 if (!destroy_sibling_or_exp(&t))
218 DEBUGP("failed to timeout reply pac->pns ct/exp\n");
219}
220
221/* expect GRE connections (PNS->PAC and PAC->PNS direction) */
222static inline int
223exp_gre(struct ip_conntrack *master,
224 u_int32_t seq,
225 __be16 callid,
226 __be16 peer_callid)
227{
228 struct ip_conntrack_tuple inv_tuple;
229 struct ip_conntrack_tuple exp_tuples[] = {
230 /* tuple in original direction, PNS->PAC */
231 { .src = { .ip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip,
232 .u = { .gre = { .key = peer_callid } }
233 },
234 .dst = { .ip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip,
235 .u = { .gre = { .key = callid } },
236 .protonum = IPPROTO_GRE
237 },
238 },
239 /* tuple in reply direction, PAC->PNS */
240 { .src = { .ip = master->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip,
241 .u = { .gre = { .key = callid } }
242 },
243 .dst = { .ip = master->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip,
244 .u = { .gre = { .key = peer_callid } },
245 .protonum = IPPROTO_GRE
246 },
247 }
248 };
249 struct ip_conntrack_expect *exp_orig, *exp_reply;
250 int ret = 1;
251
252 exp_orig = ip_conntrack_expect_alloc(master);
253 if (exp_orig == NULL)
254 goto out;
255
256 exp_reply = ip_conntrack_expect_alloc(master);
257 if (exp_reply == NULL)
258 goto out_put_orig;
259
260 memcpy(&exp_orig->tuple, &exp_tuples[0], sizeof(exp_orig->tuple));
261
262 exp_orig->mask.src.ip = 0xffffffff;
263 exp_orig->mask.src.u.all = 0;
264 exp_orig->mask.dst.u.all = 0;
265 exp_orig->mask.dst.u.gre.key = htons(0xffff);
266 exp_orig->mask.dst.ip = 0xffffffff;
267 exp_orig->mask.dst.protonum = 0xff;
268
269 exp_orig->master = master;
270 exp_orig->expectfn = pptp_expectfn;
271 exp_orig->flags = 0;
272
273 exp_orig->dir = IP_CT_DIR_ORIGINAL;
274
275 /* both expectations are identical apart from tuple */
276 memcpy(exp_reply, exp_orig, sizeof(*exp_reply));
277 memcpy(&exp_reply->tuple, &exp_tuples[1], sizeof(exp_reply->tuple));
278
279 exp_reply->dir = !exp_orig->dir;
280
281 if (ip_nat_pptp_hook_exp_gre)
282 ret = ip_nat_pptp_hook_exp_gre(exp_orig, exp_reply);
283 else {
284
285 DEBUGP("calling expect_related PNS->PAC");
286 DUMP_TUPLE(&exp_orig->tuple);
287
288 if (ip_conntrack_expect_related(exp_orig) != 0) {
289 DEBUGP("cannot expect_related()\n");
290 goto out_put_both;
291 }
292
293 DEBUGP("calling expect_related PAC->PNS");
294 DUMP_TUPLE(&exp_reply->tuple);
295
296 if (ip_conntrack_expect_related(exp_reply) != 0) {
297 DEBUGP("cannot expect_related()\n");
298 goto out_unexpect_orig;
299 }
300
301 /* Add GRE keymap entries */
302 if (ip_ct_gre_keymap_add(master, &exp_reply->tuple, 0) != 0) {
303 DEBUGP("cannot keymap_add() exp\n");
304 goto out_unexpect_both;
305 }
306
307 invert_tuplepr(&inv_tuple, &exp_reply->tuple);
308 if (ip_ct_gre_keymap_add(master, &inv_tuple, 1) != 0) {
309 ip_ct_gre_keymap_destroy(master);
310 DEBUGP("cannot keymap_add() exp_inv\n");
311 goto out_unexpect_both;
312 }
313 ret = 0;
314 }
315
316out_put_both:
317 ip_conntrack_expect_put(exp_reply);
318out_put_orig:
319 ip_conntrack_expect_put(exp_orig);
320out:
321 return ret;
322
323out_unexpect_both:
324 ip_conntrack_unexpect_related(exp_reply);
325out_unexpect_orig:
326 ip_conntrack_unexpect_related(exp_orig);
327 goto out_put_both;
328}
329
330static inline int
331pptp_inbound_pkt(struct sk_buff **pskb,
332 struct tcphdr *tcph,
333 unsigned int nexthdr_off,
334 unsigned int datalen,
335 struct ip_conntrack *ct,
336 enum ip_conntrack_info ctinfo)
337{
338 struct PptpControlHeader _ctlh, *ctlh;
339 unsigned int reqlen;
340 union pptp_ctrl_union _pptpReq, *pptpReq;
341 struct ip_ct_pptp_master *info = &ct->help.ct_pptp_info;
342 u_int16_t msg;
343 __be16 *cid, *pcid;
344 u_int32_t seq;
345
346 ctlh = skb_header_pointer(*pskb, nexthdr_off, sizeof(_ctlh), &_ctlh);
347 if (!ctlh) {
348 DEBUGP("error during skb_header_pointer\n");
349 return NF_ACCEPT;
350 }
351 nexthdr_off += sizeof(_ctlh);
352 datalen -= sizeof(_ctlh);
353
354 reqlen = datalen;
355 if (reqlen > sizeof(*pptpReq))
356 reqlen = sizeof(*pptpReq);
357 pptpReq = skb_header_pointer(*pskb, nexthdr_off, reqlen, &_pptpReq);
358 if (!pptpReq) {
359 DEBUGP("error during skb_header_pointer\n");
360 return NF_ACCEPT;
361 }
362
363 msg = ntohs(ctlh->messageType);
364 DEBUGP("inbound control message %s\n", pptp_msg_name[msg]);
365
366 switch (msg) {
367 case PPTP_START_SESSION_REPLY:
368 if (reqlen < sizeof(_pptpReq.srep)) {
369 DEBUGP("%s: short packet\n", pptp_msg_name[msg]);
370 break;
371 }
372
373 /* server confirms new control session */
374 if (info->sstate < PPTP_SESSION_REQUESTED) {
375 DEBUGP("%s without START_SESS_REQUEST\n",
376 pptp_msg_name[msg]);
377 break;
378 }
379 if (pptpReq->srep.resultCode == PPTP_START_OK)
380 info->sstate = PPTP_SESSION_CONFIRMED;
381 else
382 info->sstate = PPTP_SESSION_ERROR;
383 break;
384
385 case PPTP_STOP_SESSION_REPLY:
386 if (reqlen < sizeof(_pptpReq.strep)) {
387 DEBUGP("%s: short packet\n", pptp_msg_name[msg]);
388 break;
389 }
390
391 /* server confirms end of control session */
392 if (info->sstate > PPTP_SESSION_STOPREQ) {
393 DEBUGP("%s without STOP_SESS_REQUEST\n",
394 pptp_msg_name[msg]);
395 break;
396 }
397 if (pptpReq->strep.resultCode == PPTP_STOP_OK)
398 info->sstate = PPTP_SESSION_NONE;
399 else
400 info->sstate = PPTP_SESSION_ERROR;
401 break;
402
403 case PPTP_OUT_CALL_REPLY:
404 if (reqlen < sizeof(_pptpReq.ocack)) {
405 DEBUGP("%s: short packet\n", pptp_msg_name[msg]);
406 break;
407 }
408
409 /* server accepted call, we now expect GRE frames */
410 if (info->sstate != PPTP_SESSION_CONFIRMED) {
411 DEBUGP("%s but no session\n", pptp_msg_name[msg]);
412 break;
413 }
414 if (info->cstate != PPTP_CALL_OUT_REQ &&
415 info->cstate != PPTP_CALL_OUT_CONF) {
416 DEBUGP("%s without OUTCALL_REQ\n", pptp_msg_name[msg]);
417 break;
418 }
419 if (pptpReq->ocack.resultCode != PPTP_OUTCALL_CONNECT) {
420 info->cstate = PPTP_CALL_NONE;
421 break;
422 }
423
424 cid = &pptpReq->ocack.callID;
425 pcid = &pptpReq->ocack.peersCallID;
426
427 info->pac_call_id = ntohs(*cid);
428
429 if (htons(info->pns_call_id) != *pcid) {
430 DEBUGP("%s for unknown callid %u\n",
431 pptp_msg_name[msg], ntohs(*pcid));
432 break;
433 }
434
435 DEBUGP("%s, CID=%X, PCID=%X\n", pptp_msg_name[msg],
436 ntohs(*cid), ntohs(*pcid));
437
438 info->cstate = PPTP_CALL_OUT_CONF;
439
440 seq = ntohl(tcph->seq) + sizeof(struct pptp_pkt_hdr)
441 + sizeof(struct PptpControlHeader)
442 + ((void *)pcid - (void *)pptpReq);
443
444 if (exp_gre(ct, seq, *cid, *pcid) != 0)
445 printk("ip_conntrack_pptp: error during exp_gre\n");
446 break;
447
448 case PPTP_IN_CALL_REQUEST:
449 if (reqlen < sizeof(_pptpReq.icack)) {
450 DEBUGP("%s: short packet\n", pptp_msg_name[msg]);
451 break;
452 }
453
454 /* server tells us about incoming call request */
455 if (info->sstate != PPTP_SESSION_CONFIRMED) {
456 DEBUGP("%s but no session\n", pptp_msg_name[msg]);
457 break;
458 }
459 pcid = &pptpReq->icack.peersCallID;
460 DEBUGP("%s, PCID=%X\n", pptp_msg_name[msg], ntohs(*pcid));
461 info->cstate = PPTP_CALL_IN_REQ;
462 info->pac_call_id = ntohs(*pcid);
463 break;
464
465 case PPTP_IN_CALL_CONNECT:
466 if (reqlen < sizeof(_pptpReq.iccon)) {
467 DEBUGP("%s: short packet\n", pptp_msg_name[msg]);
468 break;
469 }
470
471 /* server tells us about incoming call established */
472 if (info->sstate != PPTP_SESSION_CONFIRMED) {
473 DEBUGP("%s but no session\n", pptp_msg_name[msg]);
474 break;
475 }
476 if (info->sstate != PPTP_CALL_IN_REP
477 && info->sstate != PPTP_CALL_IN_CONF) {
478 DEBUGP("%s but never sent IN_CALL_REPLY\n",
479 pptp_msg_name[msg]);
480 break;
481 }
482
483 pcid = &pptpReq->iccon.peersCallID;
484 cid = &info->pac_call_id;
485
486 if (info->pns_call_id != ntohs(*pcid)) {
487 DEBUGP("%s for unknown CallID %u\n",
488 pptp_msg_name[msg], ntohs(*pcid));
489 break;
490 }
491
492 DEBUGP("%s, PCID=%X\n", pptp_msg_name[msg], ntohs(*pcid));
493 info->cstate = PPTP_CALL_IN_CONF;
494
495 /* we expect a GRE connection from PAC to PNS */
496 seq = ntohl(tcph->seq) + sizeof(struct pptp_pkt_hdr)
497 + sizeof(struct PptpControlHeader)
498 + ((void *)pcid - (void *)pptpReq);
499
500 if (exp_gre(ct, seq, *cid, *pcid) != 0)
501 printk("ip_conntrack_pptp: error during exp_gre\n");
502
503 break;
504
505 case PPTP_CALL_DISCONNECT_NOTIFY:
506 if (reqlen < sizeof(_pptpReq.disc)) {
507 DEBUGP("%s: short packet\n", pptp_msg_name[msg]);
508 break;
509 }
510
511 /* server confirms disconnect */
512 cid = &pptpReq->disc.callID;
513 DEBUGP("%s, CID=%X\n", pptp_msg_name[msg], ntohs(*cid));
514 info->cstate = PPTP_CALL_NONE;
515
516 /* untrack this call id, unexpect GRE packets */
517 pptp_destroy_siblings(ct);
518 break;
519
520 case PPTP_WAN_ERROR_NOTIFY:
521 break;
522
523 case PPTP_ECHO_REQUEST:
524 case PPTP_ECHO_REPLY:
525 /* I don't have to explain these ;) */
526 break;
527 default:
528 DEBUGP("invalid %s (TY=%d)\n", (msg <= PPTP_MSG_MAX)
529 ? pptp_msg_name[msg]:pptp_msg_name[0], msg);
530 break;
531 }
532
533
534 if (ip_nat_pptp_hook_inbound)
535 return ip_nat_pptp_hook_inbound(pskb, ct, ctinfo, ctlh,
536 pptpReq);
537
538 return NF_ACCEPT;
539
540}
541
542static inline int
543pptp_outbound_pkt(struct sk_buff **pskb,
544 struct tcphdr *tcph,
545 unsigned int nexthdr_off,
546 unsigned int datalen,
547 struct ip_conntrack *ct,
548 enum ip_conntrack_info ctinfo)
549{
550 struct PptpControlHeader _ctlh, *ctlh;
551 unsigned int reqlen;
552 union pptp_ctrl_union _pptpReq, *pptpReq;
553 struct ip_ct_pptp_master *info = &ct->help.ct_pptp_info;
554 u_int16_t msg;
555 __be16 *cid, *pcid;
556
557 ctlh = skb_header_pointer(*pskb, nexthdr_off, sizeof(_ctlh), &_ctlh);
558 if (!ctlh)
559 return NF_ACCEPT;
560 nexthdr_off += sizeof(_ctlh);
561 datalen -= sizeof(_ctlh);
562
563 reqlen = datalen;
564 if (reqlen > sizeof(*pptpReq))
565 reqlen = sizeof(*pptpReq);
566 pptpReq = skb_header_pointer(*pskb, nexthdr_off, reqlen, &_pptpReq);
567 if (!pptpReq)
568 return NF_ACCEPT;
569
570 msg = ntohs(ctlh->messageType);
571 DEBUGP("outbound control message %s\n", pptp_msg_name[msg]);
572
573 switch (msg) {
574 case PPTP_START_SESSION_REQUEST:
575 /* client requests for new control session */
576 if (info->sstate != PPTP_SESSION_NONE) {
577 DEBUGP("%s but we already have one",
578 pptp_msg_name[msg]);
579 }
580 info->sstate = PPTP_SESSION_REQUESTED;
581 break;
582 case PPTP_STOP_SESSION_REQUEST:
583 /* client requests end of control session */
584 info->sstate = PPTP_SESSION_STOPREQ;
585 break;
586
587 case PPTP_OUT_CALL_REQUEST:
588 if (reqlen < sizeof(_pptpReq.ocreq)) {
589 DEBUGP("%s: short packet\n", pptp_msg_name[msg]);
590 /* FIXME: break; */
591 }
592
593 /* client initiating connection to server */
594 if (info->sstate != PPTP_SESSION_CONFIRMED) {
595 DEBUGP("%s but no session\n",
596 pptp_msg_name[msg]);
597 break;
598 }
599 info->cstate = PPTP_CALL_OUT_REQ;
600 /* track PNS call id */
601 cid = &pptpReq->ocreq.callID;
602 DEBUGP("%s, CID=%X\n", pptp_msg_name[msg], ntohs(*cid));
603 info->pns_call_id = ntohs(*cid);
604 break;
605 case PPTP_IN_CALL_REPLY:
606 if (reqlen < sizeof(_pptpReq.icack)) {
607 DEBUGP("%s: short packet\n", pptp_msg_name[msg]);
608 break;
609 }
610
611 /* client answers incoming call */
612 if (info->cstate != PPTP_CALL_IN_REQ
613 && info->cstate != PPTP_CALL_IN_REP) {
614 DEBUGP("%s without incall_req\n",
615 pptp_msg_name[msg]);
616 break;
617 }
618 if (pptpReq->icack.resultCode != PPTP_INCALL_ACCEPT) {
619 info->cstate = PPTP_CALL_NONE;
620 break;
621 }
622 pcid = &pptpReq->icack.peersCallID;
623 if (info->pac_call_id != ntohs(*pcid)) {
624 DEBUGP("%s for unknown call %u\n",
625 pptp_msg_name[msg], ntohs(*pcid));
626 break;
627 }
628 DEBUGP("%s, CID=%X\n", pptp_msg_name[msg], ntohs(*pcid));
629 /* part two of the three-way handshake */
630 info->cstate = PPTP_CALL_IN_REP;
631 info->pns_call_id = ntohs(pptpReq->icack.callID);
632 break;
633
634 case PPTP_CALL_CLEAR_REQUEST:
635 /* client requests hangup of call */
636 if (info->sstate != PPTP_SESSION_CONFIRMED) {
637 DEBUGP("CLEAR_CALL but no session\n");
638 break;
639 }
640 /* FUTURE: iterate over all calls and check if
641 * call ID is valid. We don't do this without newnat,
642 * because we only know about last call */
643 info->cstate = PPTP_CALL_CLEAR_REQ;
644 break;
645 case PPTP_SET_LINK_INFO:
646 break;
647 case PPTP_ECHO_REQUEST:
648 case PPTP_ECHO_REPLY:
649 /* I don't have to explain these ;) */
650 break;
651 default:
652 DEBUGP("invalid %s (TY=%d)\n", (msg <= PPTP_MSG_MAX)?
653 pptp_msg_name[msg]:pptp_msg_name[0], msg);
654 /* unknown: no need to create GRE masq table entry */
655 break;
656 }
657
658 if (ip_nat_pptp_hook_outbound)
659 return ip_nat_pptp_hook_outbound(pskb, ct, ctinfo, ctlh,
660 pptpReq);
661
662 return NF_ACCEPT;
663}
664
665
666/* track caller id inside control connection, call expect_related */
667static int
668conntrack_pptp_help(struct sk_buff **pskb,
669 struct ip_conntrack *ct, enum ip_conntrack_info ctinfo)
670
671{
672 struct pptp_pkt_hdr _pptph, *pptph;
673 struct tcphdr _tcph, *tcph;
674 u_int32_t tcplen = (*pskb)->len - (*pskb)->nh.iph->ihl * 4;
675 u_int32_t datalen;
676 int dir = CTINFO2DIR(ctinfo);
677 struct ip_ct_pptp_master *info = &ct->help.ct_pptp_info;
678 unsigned int nexthdr_off;
679
680 int oldsstate, oldcstate;
681 int ret;
682
683 /* don't do any tracking before tcp handshake complete */
684 if (ctinfo != IP_CT_ESTABLISHED
685 && ctinfo != IP_CT_ESTABLISHED+IP_CT_IS_REPLY) {
686 DEBUGP("ctinfo = %u, skipping\n", ctinfo);
687 return NF_ACCEPT;
688 }
689
690 nexthdr_off = (*pskb)->nh.iph->ihl*4;
691 tcph = skb_header_pointer(*pskb, nexthdr_off, sizeof(_tcph), &_tcph);
692 BUG_ON(!tcph);
693 nexthdr_off += tcph->doff * 4;
694 datalen = tcplen - tcph->doff * 4;
695
696 if (tcph->fin || tcph->rst) {
697 DEBUGP("RST/FIN received, timeouting GRE\n");
698 /* can't do this after real newnat */
699 info->cstate = PPTP_CALL_NONE;
700
701 /* untrack this call id, unexpect GRE packets */
702 pptp_destroy_siblings(ct);
703 }
704
705 pptph = skb_header_pointer(*pskb, nexthdr_off, sizeof(_pptph), &_pptph);
706 if (!pptph) {
707 DEBUGP("no full PPTP header, can't track\n");
708 return NF_ACCEPT;
709 }
710 nexthdr_off += sizeof(_pptph);
711 datalen -= sizeof(_pptph);
712
713 /* if it's not a control message we can't do anything with it */
714 if (ntohs(pptph->packetType) != PPTP_PACKET_CONTROL ||
715 ntohl(pptph->magicCookie) != PPTP_MAGIC_COOKIE) {
716 DEBUGP("not a control packet\n");
717 return NF_ACCEPT;
718 }
719
720 oldsstate = info->sstate;
721 oldcstate = info->cstate;
722
723 spin_lock_bh(&ip_pptp_lock);
724
725 /* FIXME: We just blindly assume that the control connection is always
726 * established from PNS->PAC. However, RFC makes no guarantee */
727 if (dir == IP_CT_DIR_ORIGINAL)
728 /* client -> server (PNS -> PAC) */
729 ret = pptp_outbound_pkt(pskb, tcph, nexthdr_off, datalen, ct,
730 ctinfo);
731 else
732 /* server -> client (PAC -> PNS) */
733 ret = pptp_inbound_pkt(pskb, tcph, nexthdr_off, datalen, ct,
734 ctinfo);
735 DEBUGP("sstate: %d->%d, cstate: %d->%d\n",
736 oldsstate, info->sstate, oldcstate, info->cstate);
737 spin_unlock_bh(&ip_pptp_lock);
738
739 return ret;
740}
741
742/* control protocol helper */
743static struct ip_conntrack_helper pptp = {
744 .list = { NULL, NULL },
745 .name = "pptp",
746 .me = THIS_MODULE,
747 .max_expected = 2,
748 .timeout = 5 * 60,
749 .tuple = { .src = { .ip = 0,
750 .u = { .tcp = { .port =
751 __constant_htons(PPTP_CONTROL_PORT) } }
752 },
753 .dst = { .ip = 0,
754 .u = { .all = 0 },
755 .protonum = IPPROTO_TCP
756 }
757 },
758 .mask = { .src = { .ip = 0,
759 .u = { .tcp = { .port = __constant_htons(0xffff) } }
760 },
761 .dst = { .ip = 0,
762 .u = { .all = 0 },
763 .protonum = 0xff
764 }
765 },
766 .help = conntrack_pptp_help
767};
768
769extern void __exit ip_ct_proto_gre_fini(void);
770extern int __init ip_ct_proto_gre_init(void);
771
772/* ip_conntrack_pptp initialization */
773static int __init init(void)
774{
775 int retcode;
776
777 retcode = ip_ct_proto_gre_init();
778 if (retcode < 0)
779 return retcode;
780
781 DEBUGP(" registering helper\n");
782 if ((retcode = ip_conntrack_helper_register(&pptp))) {
783 printk(KERN_ERR "Unable to register conntrack application "
784 "helper for pptp: %d\n", retcode);
785 ip_ct_proto_gre_fini();
786 return retcode;
787 }
788
789 printk("ip_conntrack_pptp version %s loaded\n", IP_CT_PPTP_VERSION);
790 return 0;
791}
792
793static void __exit fini(void)
794{
795 ip_conntrack_helper_unregister(&pptp);
796 ip_ct_proto_gre_fini();
797 printk("ip_conntrack_pptp version %s unloaded\n", IP_CT_PPTP_VERSION);
798}
799
800module_init(init);
801module_exit(fini);
802
803EXPORT_SYMBOL(ip_nat_pptp_hook_outbound);
804EXPORT_SYMBOL(ip_nat_pptp_hook_inbound);
805EXPORT_SYMBOL(ip_nat_pptp_hook_exp_gre);
806EXPORT_SYMBOL(ip_nat_pptp_hook_expectfn);
diff --git a/net/ipv4/netfilter/ip_conntrack_irc.c b/net/ipv4/netfilter/ip_conntrack_irc.c
index d7a8a98c05e1..15457415a4f3 100644
--- a/net/ipv4/netfilter/ip_conntrack_irc.c
+++ b/net/ipv4/netfilter/ip_conntrack_irc.c
@@ -34,7 +34,7 @@
34#include <linux/moduleparam.h> 34#include <linux/moduleparam.h>
35 35
36#define MAX_PORTS 8 36#define MAX_PORTS 8
37static int ports[MAX_PORTS]; 37static short ports[MAX_PORTS];
38static int ports_c; 38static int ports_c;
39static int max_dcc_channels = 8; 39static int max_dcc_channels = 8;
40static unsigned int dcc_timeout = 300; 40static unsigned int dcc_timeout = 300;
@@ -52,7 +52,7 @@ EXPORT_SYMBOL_GPL(ip_nat_irc_hook);
52MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>"); 52MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
53MODULE_DESCRIPTION("IRC (DCC) connection tracking helper"); 53MODULE_DESCRIPTION("IRC (DCC) connection tracking helper");
54MODULE_LICENSE("GPL"); 54MODULE_LICENSE("GPL");
55module_param_array(ports, int, &ports_c, 0400); 55module_param_array(ports, short, &ports_c, 0400);
56MODULE_PARM_DESC(ports, "port numbers of IRC servers"); 56MODULE_PARM_DESC(ports, "port numbers of IRC servers");
57module_param(max_dcc_channels, int, 0400); 57module_param(max_dcc_channels, int, 0400);
58MODULE_PARM_DESC(max_dcc_channels, "max number of expected DCC channels per IRC session"); 58MODULE_PARM_DESC(max_dcc_channels, "max number of expected DCC channels per IRC session");
@@ -240,7 +240,7 @@ static int help(struct sk_buff **pskb,
240} 240}
241 241
242static struct ip_conntrack_helper irc_helpers[MAX_PORTS]; 242static struct ip_conntrack_helper irc_helpers[MAX_PORTS];
243static char irc_names[MAX_PORTS][10]; 243static char irc_names[MAX_PORTS][sizeof("irc-65535")];
244 244
245static void fini(void); 245static void fini(void);
246 246
diff --git a/net/ipv4/netfilter/ip_conntrack_netbios_ns.c b/net/ipv4/netfilter/ip_conntrack_netbios_ns.c
index bb7246683b74..186646eb249f 100644
--- a/net/ipv4/netfilter/ip_conntrack_netbios_ns.c
+++ b/net/ipv4/netfilter/ip_conntrack_netbios_ns.c
@@ -23,7 +23,6 @@
23#include <linux/inetdevice.h> 23#include <linux/inetdevice.h>
24#include <linux/in.h> 24#include <linux/in.h>
25#include <linux/ip.h> 25#include <linux/ip.h>
26#include <linux/udp.h>
27#include <net/route.h> 26#include <net/route.h>
28 27
29#include <linux/netfilter.h> 28#include <linux/netfilter.h>
@@ -31,6 +30,8 @@
31#include <linux/netfilter_ipv4/ip_conntrack.h> 30#include <linux/netfilter_ipv4/ip_conntrack.h>
32#include <linux/netfilter_ipv4/ip_conntrack_helper.h> 31#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
33 32
33#define NMBD_PORT 137
34
34MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 35MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
35MODULE_DESCRIPTION("NetBIOS name service broadcast connection tracking helper"); 36MODULE_DESCRIPTION("NetBIOS name service broadcast connection tracking helper");
36MODULE_LICENSE("GPL"); 37MODULE_LICENSE("GPL");
@@ -44,7 +45,6 @@ static int help(struct sk_buff **pskb,
44{ 45{
45 struct ip_conntrack_expect *exp; 46 struct ip_conntrack_expect *exp;
46 struct iphdr *iph = (*pskb)->nh.iph; 47 struct iphdr *iph = (*pskb)->nh.iph;
47 struct udphdr _uh, *uh;
48 struct rtable *rt = (struct rtable *)(*pskb)->dst; 48 struct rtable *rt = (struct rtable *)(*pskb)->dst;
49 struct in_device *in_dev; 49 struct in_device *in_dev;
50 u_int32_t mask = 0; 50 u_int32_t mask = 0;
@@ -58,7 +58,7 @@ static int help(struct sk_buff **pskb,
58 goto out; 58 goto out;
59 59
60 rcu_read_lock(); 60 rcu_read_lock();
61 in_dev = __in_dev_get(rt->u.dst.dev); 61 in_dev = __in_dev_get_rcu(rt->u.dst.dev);
62 if (in_dev != NULL) { 62 if (in_dev != NULL) {
63 for_primary_ifa(in_dev) { 63 for_primary_ifa(in_dev) {
64 if (ifa->ifa_broadcast == iph->daddr) { 64 if (ifa->ifa_broadcast == iph->daddr) {
@@ -72,20 +72,15 @@ static int help(struct sk_buff **pskb,
72 if (mask == 0) 72 if (mask == 0)
73 goto out; 73 goto out;
74 74
75 uh = skb_header_pointer(*pskb, iph->ihl * 4, sizeof(_uh), &_uh);
76 BUG_ON(uh == NULL);
77
78 exp = ip_conntrack_expect_alloc(ct); 75 exp = ip_conntrack_expect_alloc(ct);
79 if (exp == NULL) 76 if (exp == NULL)
80 goto out; 77 goto out;
81 memset(&exp->tuple, 0, sizeof(exp->tuple));
82 exp->tuple.src.ip = iph->daddr & mask;
83 exp->tuple.dst.ip = iph->saddr;
84 exp->tuple.dst.u.udp.port = uh->source;
85 exp->tuple.dst.protonum = IPPROTO_UDP;
86 78
87 memset(&exp->mask, 0, sizeof(exp->mask)); 79 exp->tuple = ct->tuplehash[IP_CT_DIR_REPLY].tuple;
80 exp->tuple.src.u.udp.port = ntohs(NMBD_PORT);
81
88 exp->mask.src.ip = mask; 82 exp->mask.src.ip = mask;
83 exp->mask.src.u.udp.port = 0xFFFF;
89 exp->mask.dst.ip = 0xFFFFFFFF; 84 exp->mask.dst.ip = 0xFFFFFFFF;
90 exp->mask.dst.u.udp.port = 0xFFFF; 85 exp->mask.dst.u.udp.port = 0xFFFF;
91 exp->mask.dst.protonum = 0xFF; 86 exp->mask.dst.protonum = 0xFF;
@@ -96,7 +91,7 @@ static int help(struct sk_buff **pskb,
96 ip_conntrack_expect_related(exp); 91 ip_conntrack_expect_related(exp);
97 ip_conntrack_expect_put(exp); 92 ip_conntrack_expect_put(exp);
98 93
99 ip_ct_refresh_acct(ct, ctinfo, NULL, timeout * HZ); 94 ip_ct_refresh(ct, *pskb, timeout * HZ);
100out: 95out:
101 return NF_ACCEPT; 96 return NF_ACCEPT;
102} 97}
@@ -107,7 +102,7 @@ static struct ip_conntrack_helper helper = {
107 .src = { 102 .src = {
108 .u = { 103 .u = {
109 .udp = { 104 .udp = {
110 .port = __constant_htons(137), 105 .port = __constant_htons(NMBD_PORT),
111 } 106 }
112 } 107 }
113 }, 108 },
diff --git a/net/ipv4/netfilter/ip_conntrack_netlink.c b/net/ipv4/netfilter/ip_conntrack_netlink.c
index 15aef3564742..b08a432efcf8 100644
--- a/net/ipv4/netfilter/ip_conntrack_netlink.c
+++ b/net/ipv4/netfilter/ip_conntrack_netlink.c
@@ -1270,7 +1270,7 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
1270 if (err < 0) 1270 if (err < 0)
1271 return err; 1271 return err;
1272 1272
1273 exp = ip_conntrack_expect_find_get(&tuple); 1273 exp = ip_conntrack_expect_find(&tuple);
1274 if (!exp) 1274 if (!exp)
1275 return -ENOENT; 1275 return -ENOENT;
1276 1276
@@ -1318,7 +1318,7 @@ ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb,
1318 return err; 1318 return err;
1319 1319
1320 /* bump usage count to 2 */ 1320 /* bump usage count to 2 */
1321 exp = ip_conntrack_expect_find_get(&tuple); 1321 exp = ip_conntrack_expect_find(&tuple);
1322 if (!exp) 1322 if (!exp)
1323 return -ENOENT; 1323 return -ENOENT;
1324 1324
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_gre.c b/net/ipv4/netfilter/ip_conntrack_proto_gre.c
new file mode 100644
index 000000000000..744abb9d377a
--- /dev/null
+++ b/net/ipv4/netfilter/ip_conntrack_proto_gre.c
@@ -0,0 +1,328 @@
1/*
2 * ip_conntrack_proto_gre.c - Version 3.0
3 *
4 * Connection tracking protocol helper module for GRE.
5 *
6 * GRE is a generic encapsulation protocol, which is generally not very
7 * suited for NAT, as it has no protocol-specific part as port numbers.
8 *
9 * It has an optional key field, which may help us distinguishing two
10 * connections between the same two hosts.
11 *
12 * GRE is defined in RFC 1701 and RFC 1702, as well as RFC 2784
13 *
14 * PPTP is built on top of a modified version of GRE, and has a mandatory
15 * field called "CallID", which serves us for the same purpose as the key
16 * field in plain GRE.
17 *
18 * Documentation about PPTP can be found in RFC 2637
19 *
20 * (C) 2000-2005 by Harald Welte <laforge@gnumonks.org>
21 *
22 * Development of this code funded by Astaro AG (http://www.astaro.com/)
23 *
24 */
25
26#include <linux/config.h>
27#include <linux/module.h>
28#include <linux/types.h>
29#include <linux/timer.h>
30#include <linux/netfilter.h>
31#include <linux/ip.h>
32#include <linux/in.h>
33#include <linux/list.h>
34
35static DEFINE_RWLOCK(ip_ct_gre_lock);
36#define ASSERT_READ_LOCK(x)
37#define ASSERT_WRITE_LOCK(x)
38
39#include <linux/netfilter_ipv4/listhelp.h>
40#include <linux/netfilter_ipv4/ip_conntrack_protocol.h>
41#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
42#include <linux/netfilter_ipv4/ip_conntrack_core.h>
43
44#include <linux/netfilter_ipv4/ip_conntrack_proto_gre.h>
45#include <linux/netfilter_ipv4/ip_conntrack_pptp.h>
46
47MODULE_LICENSE("GPL");
48MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
49MODULE_DESCRIPTION("netfilter connection tracking protocol helper for GRE");
50
51/* shamelessly stolen from ip_conntrack_proto_udp.c */
52#define GRE_TIMEOUT (30*HZ)
53#define GRE_STREAM_TIMEOUT (180*HZ)
54
55#if 0
56#define DEBUGP(format, args...) printk(KERN_DEBUG "%s:%s: " format, __FILE__, __FUNCTION__, ## args)
57#define DUMP_TUPLE_GRE(x) printk("%u.%u.%u.%u:0x%x -> %u.%u.%u.%u:0x%x\n", \
58 NIPQUAD((x)->src.ip), ntohs((x)->src.u.gre.key), \
59 NIPQUAD((x)->dst.ip), ntohs((x)->dst.u.gre.key))
60#else
61#define DEBUGP(x, args...)
62#define DUMP_TUPLE_GRE(x)
63#endif
64
65/* GRE KEYMAP HANDLING FUNCTIONS */
66static LIST_HEAD(gre_keymap_list);
67
68static inline int gre_key_cmpfn(const struct ip_ct_gre_keymap *km,
69 const struct ip_conntrack_tuple *t)
70{
71 return ((km->tuple.src.ip == t->src.ip) &&
72 (km->tuple.dst.ip == t->dst.ip) &&
73 (km->tuple.dst.protonum == t->dst.protonum) &&
74 (km->tuple.dst.u.all == t->dst.u.all));
75}
76
77/* look up the source key for a given tuple */
78static u_int32_t gre_keymap_lookup(struct ip_conntrack_tuple *t)
79{
80 struct ip_ct_gre_keymap *km;
81 u_int32_t key = 0;
82
83 read_lock_bh(&ip_ct_gre_lock);
84 km = LIST_FIND(&gre_keymap_list, gre_key_cmpfn,
85 struct ip_ct_gre_keymap *, t);
86 if (km)
87 key = km->tuple.src.u.gre.key;
88 read_unlock_bh(&ip_ct_gre_lock);
89
90 DEBUGP("lookup src key 0x%x up key for ", key);
91 DUMP_TUPLE_GRE(t);
92
93 return key;
94}
95
96/* add a single keymap entry, associate with specified master ct */
97int
98ip_ct_gre_keymap_add(struct ip_conntrack *ct,
99 struct ip_conntrack_tuple *t, int reply)
100{
101 struct ip_ct_gre_keymap **exist_km, *km, *old;
102
103 if (!ct->helper || strcmp(ct->helper->name, "pptp")) {
104 DEBUGP("refusing to add GRE keymap to non-pptp session\n");
105 return -1;
106 }
107
108 if (!reply)
109 exist_km = &ct->help.ct_pptp_info.keymap_orig;
110 else
111 exist_km = &ct->help.ct_pptp_info.keymap_reply;
112
113 if (*exist_km) {
114 /* check whether it's a retransmission */
115 old = LIST_FIND(&gre_keymap_list, gre_key_cmpfn,
116 struct ip_ct_gre_keymap *, t);
117 if (old == *exist_km) {
118 DEBUGP("retransmission\n");
119 return 0;
120 }
121
122 DEBUGP("trying to override keymap_%s for ct %p\n",
123 reply? "reply":"orig", ct);
124 return -EEXIST;
125 }
126
127 km = kmalloc(sizeof(*km), GFP_ATOMIC);
128 if (!km)
129 return -ENOMEM;
130
131 memcpy(&km->tuple, t, sizeof(*t));
132 *exist_km = km;
133
134 DEBUGP("adding new entry %p: ", km);
135 DUMP_TUPLE_GRE(&km->tuple);
136
137 write_lock_bh(&ip_ct_gre_lock);
138 list_append(&gre_keymap_list, km);
139 write_unlock_bh(&ip_ct_gre_lock);
140
141 return 0;
142}
143
144/* destroy the keymap entries associated with specified master ct */
145void ip_ct_gre_keymap_destroy(struct ip_conntrack *ct)
146{
147 DEBUGP("entering for ct %p\n", ct);
148
149 if (!ct->helper || strcmp(ct->helper->name, "pptp")) {
150 DEBUGP("refusing to destroy GRE keymap to non-pptp session\n");
151 return;
152 }
153
154 write_lock_bh(&ip_ct_gre_lock);
155 if (ct->help.ct_pptp_info.keymap_orig) {
156 DEBUGP("removing %p from list\n",
157 ct->help.ct_pptp_info.keymap_orig);
158 list_del(&ct->help.ct_pptp_info.keymap_orig->list);
159 kfree(ct->help.ct_pptp_info.keymap_orig);
160 ct->help.ct_pptp_info.keymap_orig = NULL;
161 }
162 if (ct->help.ct_pptp_info.keymap_reply) {
163 DEBUGP("removing %p from list\n",
164 ct->help.ct_pptp_info.keymap_reply);
165 list_del(&ct->help.ct_pptp_info.keymap_reply->list);
166 kfree(ct->help.ct_pptp_info.keymap_reply);
167 ct->help.ct_pptp_info.keymap_reply = NULL;
168 }
169 write_unlock_bh(&ip_ct_gre_lock);
170}
171
172
173/* PUBLIC CONNTRACK PROTO HELPER FUNCTIONS */
174
175/* invert gre part of tuple */
176static int gre_invert_tuple(struct ip_conntrack_tuple *tuple,
177 const struct ip_conntrack_tuple *orig)
178{
179 tuple->dst.u.gre.key = orig->src.u.gre.key;
180 tuple->src.u.gre.key = orig->dst.u.gre.key;
181
182 return 1;
183}
184
185/* gre hdr info to tuple */
186static int gre_pkt_to_tuple(const struct sk_buff *skb,
187 unsigned int dataoff,
188 struct ip_conntrack_tuple *tuple)
189{
190 struct gre_hdr_pptp _pgrehdr, *pgrehdr;
191 u_int32_t srckey;
192 struct gre_hdr _grehdr, *grehdr;
193
194 /* first only delinearize old RFC1701 GRE header */
195 grehdr = skb_header_pointer(skb, dataoff, sizeof(_grehdr), &_grehdr);
196 if (!grehdr || grehdr->version != GRE_VERSION_PPTP) {
197 /* try to behave like "ip_conntrack_proto_generic" */
198 tuple->src.u.all = 0;
199 tuple->dst.u.all = 0;
200 return 1;
201 }
202
203 /* PPTP header is variable length, only need up to the call_id field */
204 pgrehdr = skb_header_pointer(skb, dataoff, 8, &_pgrehdr);
205 if (!pgrehdr)
206 return 1;
207
208 if (ntohs(grehdr->protocol) != GRE_PROTOCOL_PPTP) {
209 DEBUGP("GRE_VERSION_PPTP but unknown proto\n");
210 return 0;
211 }
212
213 tuple->dst.u.gre.key = pgrehdr->call_id;
214 srckey = gre_keymap_lookup(tuple);
215 tuple->src.u.gre.key = srckey;
216
217 return 1;
218}
219
220/* print gre part of tuple */
221static int gre_print_tuple(struct seq_file *s,
222 const struct ip_conntrack_tuple *tuple)
223{
224 return seq_printf(s, "srckey=0x%x dstkey=0x%x ",
225 ntohs(tuple->src.u.gre.key),
226 ntohs(tuple->dst.u.gre.key));
227}
228
229/* print private data for conntrack */
230static int gre_print_conntrack(struct seq_file *s,
231 const struct ip_conntrack *ct)
232{
233 return seq_printf(s, "timeout=%u, stream_timeout=%u ",
234 (ct->proto.gre.timeout / HZ),
235 (ct->proto.gre.stream_timeout / HZ));
236}
237
238/* Returns verdict for packet, and may modify conntrack */
239static int gre_packet(struct ip_conntrack *ct,
240 const struct sk_buff *skb,
241 enum ip_conntrack_info conntrackinfo)
242{
243 /* If we've seen traffic both ways, this is a GRE connection.
244 * Extend timeout. */
245 if (ct->status & IPS_SEEN_REPLY) {
246 ip_ct_refresh_acct(ct, conntrackinfo, skb,
247 ct->proto.gre.stream_timeout);
248 /* Also, more likely to be important, and not a probe. */
249 set_bit(IPS_ASSURED_BIT, &ct->status);
250 ip_conntrack_event_cache(IPCT_STATUS, skb);
251 } else
252 ip_ct_refresh_acct(ct, conntrackinfo, skb,
253 ct->proto.gre.timeout);
254
255 return NF_ACCEPT;
256}
257
258/* Called when a new connection for this protocol found. */
259static int gre_new(struct ip_conntrack *ct,
260 const struct sk_buff *skb)
261{
262 DEBUGP(": ");
263 DUMP_TUPLE_GRE(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
264
265 /* initialize to sane value. Ideally a conntrack helper
266 * (e.g. in case of pptp) is increasing them */
267 ct->proto.gre.stream_timeout = GRE_STREAM_TIMEOUT;
268 ct->proto.gre.timeout = GRE_TIMEOUT;
269
270 return 1;
271}
272
273/* Called when a conntrack entry has already been removed from the hashes
274 * and is about to be deleted from memory */
275static void gre_destroy(struct ip_conntrack *ct)
276{
277 struct ip_conntrack *master = ct->master;
278 DEBUGP(" entering\n");
279
280 if (!master)
281 DEBUGP("no master !?!\n");
282 else
283 ip_ct_gre_keymap_destroy(master);
284}
285
286/* protocol helper struct */
287static struct ip_conntrack_protocol gre = {
288 .proto = IPPROTO_GRE,
289 .name = "gre",
290 .pkt_to_tuple = gre_pkt_to_tuple,
291 .invert_tuple = gre_invert_tuple,
292 .print_tuple = gre_print_tuple,
293 .print_conntrack = gre_print_conntrack,
294 .packet = gre_packet,
295 .new = gre_new,
296 .destroy = gre_destroy,
297 .me = THIS_MODULE,
298#if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \
299 defined(CONFIG_IP_NF_CONNTRACK_NETLINK_MODULE)
300 .tuple_to_nfattr = ip_ct_port_tuple_to_nfattr,
301 .nfattr_to_tuple = ip_ct_port_nfattr_to_tuple,
302#endif
303};
304
305/* ip_conntrack_proto_gre initialization */
306int __init ip_ct_proto_gre_init(void)
307{
308 return ip_conntrack_protocol_register(&gre);
309}
310
311void __exit ip_ct_proto_gre_fini(void)
312{
313 struct list_head *pos, *n;
314
315 /* delete all keymap entries */
316 write_lock_bh(&ip_ct_gre_lock);
317 list_for_each_safe(pos, n, &gre_keymap_list) {
318 DEBUGP("deleting keymap %p at module unload time\n", pos);
319 list_del(pos);
320 kfree(pos);
321 }
322 write_unlock_bh(&ip_ct_gre_lock);
323
324 ip_conntrack_protocol_unregister(&gre);
325}
326
327EXPORT_SYMBOL(ip_ct_gre_keymap_add);
328EXPORT_SYMBOL(ip_ct_gre_keymap_destroy);
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_sctp.c b/net/ipv4/netfilter/ip_conntrack_proto_sctp.c
index a875f35e576d..59a4a0111dd3 100644
--- a/net/ipv4/netfilter/ip_conntrack_proto_sctp.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_sctp.c
@@ -416,6 +416,7 @@ static int sctp_packet(struct ip_conntrack *conntrack,
416 && newconntrack == SCTP_CONNTRACK_ESTABLISHED) { 416 && newconntrack == SCTP_CONNTRACK_ESTABLISHED) {
417 DEBUGP("Setting assured bit\n"); 417 DEBUGP("Setting assured bit\n");
418 set_bit(IPS_ASSURED_BIT, &conntrack->status); 418 set_bit(IPS_ASSURED_BIT, &conntrack->status);
419 ip_conntrack_event_cache(IPCT_STATUS, skb);
419 } 420 }
420 421
421 return NF_ACCEPT; 422 return NF_ACCEPT;
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
index 1985abc59d24..121760d6cc50 100644
--- a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
@@ -1014,7 +1014,8 @@ static int tcp_packet(struct ip_conntrack *conntrack,
1014 /* Set ASSURED if we see see valid ack in ESTABLISHED 1014 /* Set ASSURED if we see see valid ack in ESTABLISHED
1015 after SYN_RECV or a valid answer for a picked up 1015 after SYN_RECV or a valid answer for a picked up
1016 connection. */ 1016 connection. */
1017 set_bit(IPS_ASSURED_BIT, &conntrack->status); 1017 set_bit(IPS_ASSURED_BIT, &conntrack->status);
1018 ip_conntrack_event_cache(IPCT_STATUS, skb);
1018 } 1019 }
1019 ip_ct_refresh_acct(conntrack, ctinfo, skb, timeout); 1020 ip_ct_refresh_acct(conntrack, ctinfo, skb, timeout);
1020 1021
diff --git a/net/ipv4/netfilter/ip_conntrack_standalone.c b/net/ipv4/netfilter/ip_conntrack_standalone.c
index ae3e3e655db5..dd476b191f4b 100644
--- a/net/ipv4/netfilter/ip_conntrack_standalone.c
+++ b/net/ipv4/netfilter/ip_conntrack_standalone.c
@@ -989,15 +989,15 @@ EXPORT_SYMBOL(need_ip_conntrack);
989EXPORT_SYMBOL(ip_conntrack_helper_register); 989EXPORT_SYMBOL(ip_conntrack_helper_register);
990EXPORT_SYMBOL(ip_conntrack_helper_unregister); 990EXPORT_SYMBOL(ip_conntrack_helper_unregister);
991EXPORT_SYMBOL(ip_ct_iterate_cleanup); 991EXPORT_SYMBOL(ip_ct_iterate_cleanup);
992EXPORT_SYMBOL(ip_ct_refresh_acct); 992EXPORT_SYMBOL(__ip_ct_refresh_acct);
993 993
994EXPORT_SYMBOL(ip_conntrack_expect_alloc); 994EXPORT_SYMBOL(ip_conntrack_expect_alloc);
995EXPORT_SYMBOL(ip_conntrack_expect_put); 995EXPORT_SYMBOL(ip_conntrack_expect_put);
996EXPORT_SYMBOL_GPL(ip_conntrack_expect_find_get); 996EXPORT_SYMBOL_GPL(__ip_conntrack_expect_find);
997EXPORT_SYMBOL_GPL(ip_conntrack_expect_find);
997EXPORT_SYMBOL(ip_conntrack_expect_related); 998EXPORT_SYMBOL(ip_conntrack_expect_related);
998EXPORT_SYMBOL(ip_conntrack_unexpect_related); 999EXPORT_SYMBOL(ip_conntrack_unexpect_related);
999EXPORT_SYMBOL_GPL(ip_conntrack_expect_list); 1000EXPORT_SYMBOL_GPL(ip_conntrack_expect_list);
1000EXPORT_SYMBOL_GPL(__ip_conntrack_expect_find);
1001EXPORT_SYMBOL_GPL(ip_ct_unlink_expect); 1001EXPORT_SYMBOL_GPL(ip_ct_unlink_expect);
1002 1002
1003EXPORT_SYMBOL(ip_conntrack_tuple_taken); 1003EXPORT_SYMBOL(ip_conntrack_tuple_taken);
diff --git a/net/ipv4/netfilter/ip_conntrack_tftp.c b/net/ipv4/netfilter/ip_conntrack_tftp.c
index d2b590533452..a78736b8525d 100644
--- a/net/ipv4/netfilter/ip_conntrack_tftp.c
+++ b/net/ipv4/netfilter/ip_conntrack_tftp.c
@@ -26,9 +26,9 @@ MODULE_DESCRIPTION("tftp connection tracking helper");
26MODULE_LICENSE("GPL"); 26MODULE_LICENSE("GPL");
27 27
28#define MAX_PORTS 8 28#define MAX_PORTS 8
29static int ports[MAX_PORTS]; 29static short ports[MAX_PORTS];
30static int ports_c; 30static int ports_c;
31module_param_array(ports, int, &ports_c, 0400); 31module_param_array(ports, short, &ports_c, 0400);
32MODULE_PARM_DESC(ports, "port numbers of tftp servers"); 32MODULE_PARM_DESC(ports, "port numbers of tftp servers");
33 33
34#if 0 34#if 0
@@ -100,7 +100,7 @@ static int tftp_help(struct sk_buff **pskb,
100} 100}
101 101
102static struct ip_conntrack_helper tftp[MAX_PORTS]; 102static struct ip_conntrack_helper tftp[MAX_PORTS];
103static char tftp_names[MAX_PORTS][10]; 103static char tftp_names[MAX_PORTS][sizeof("tftp-65535")];
104 104
105static void fini(void) 105static void fini(void)
106{ 106{
diff --git a/net/ipv4/netfilter/ip_nat_core.c b/net/ipv4/netfilter/ip_nat_core.c
index 1adedb743f60..c5e3abd24672 100644
--- a/net/ipv4/netfilter/ip_nat_core.c
+++ b/net/ipv4/netfilter/ip_nat_core.c
@@ -74,12 +74,14 @@ ip_nat_proto_find_get(u_int8_t protonum)
74 74
75 return p; 75 return p;
76} 76}
77EXPORT_SYMBOL_GPL(ip_nat_proto_find_get);
77 78
78void 79void
79ip_nat_proto_put(struct ip_nat_protocol *p) 80ip_nat_proto_put(struct ip_nat_protocol *p)
80{ 81{
81 module_put(p->me); 82 module_put(p->me);
82} 83}
84EXPORT_SYMBOL_GPL(ip_nat_proto_put);
83 85
84/* We keep an extra hash for each conntrack, for fast searching. */ 86/* We keep an extra hash for each conntrack, for fast searching. */
85static inline unsigned int 87static inline unsigned int
@@ -111,6 +113,7 @@ ip_nat_cheat_check(u_int32_t oldvalinv, u_int32_t newval, u_int16_t oldcheck)
111 return csum_fold(csum_partial((char *)diffs, sizeof(diffs), 113 return csum_fold(csum_partial((char *)diffs, sizeof(diffs),
112 oldcheck^0xFFFF)); 114 oldcheck^0xFFFF));
113} 115}
116EXPORT_SYMBOL(ip_nat_cheat_check);
114 117
115/* Is this tuple already taken? (not by us) */ 118/* Is this tuple already taken? (not by us) */
116int 119int
@@ -127,6 +130,7 @@ ip_nat_used_tuple(const struct ip_conntrack_tuple *tuple,
127 invert_tuplepr(&reply, tuple); 130 invert_tuplepr(&reply, tuple);
128 return ip_conntrack_tuple_taken(&reply, ignored_conntrack); 131 return ip_conntrack_tuple_taken(&reply, ignored_conntrack);
129} 132}
133EXPORT_SYMBOL(ip_nat_used_tuple);
130 134
131/* If we source map this tuple so reply looks like reply_tuple, will 135/* If we source map this tuple so reply looks like reply_tuple, will
132 * that meet the constraints of range. */ 136 * that meet the constraints of range. */
@@ -347,6 +351,7 @@ ip_nat_setup_info(struct ip_conntrack *conntrack,
347 351
348 return NF_ACCEPT; 352 return NF_ACCEPT;
349} 353}
354EXPORT_SYMBOL(ip_nat_setup_info);
350 355
351/* Returns true if succeeded. */ 356/* Returns true if succeeded. */
352static int 357static int
@@ -387,10 +392,10 @@ manip_pkt(u_int16_t proto,
387} 392}
388 393
389/* Do packet manipulations according to ip_nat_setup_info. */ 394/* Do packet manipulations according to ip_nat_setup_info. */
390unsigned int nat_packet(struct ip_conntrack *ct, 395unsigned int ip_nat_packet(struct ip_conntrack *ct,
391 enum ip_conntrack_info ctinfo, 396 enum ip_conntrack_info ctinfo,
392 unsigned int hooknum, 397 unsigned int hooknum,
393 struct sk_buff **pskb) 398 struct sk_buff **pskb)
394{ 399{
395 enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo); 400 enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
396 unsigned long statusbit; 401 unsigned long statusbit;
@@ -417,12 +422,13 @@ unsigned int nat_packet(struct ip_conntrack *ct,
417 } 422 }
418 return NF_ACCEPT; 423 return NF_ACCEPT;
419} 424}
425EXPORT_SYMBOL_GPL(ip_nat_packet);
420 426
421/* Dir is direction ICMP is coming from (opposite to packet it contains) */ 427/* Dir is direction ICMP is coming from (opposite to packet it contains) */
422int icmp_reply_translation(struct sk_buff **pskb, 428int ip_nat_icmp_reply_translation(struct sk_buff **pskb,
423 struct ip_conntrack *ct, 429 struct ip_conntrack *ct,
424 enum ip_nat_manip_type manip, 430 enum ip_nat_manip_type manip,
425 enum ip_conntrack_dir dir) 431 enum ip_conntrack_dir dir)
426{ 432{
427 struct { 433 struct {
428 struct icmphdr icmp; 434 struct icmphdr icmp;
@@ -509,6 +515,7 @@ int icmp_reply_translation(struct sk_buff **pskb,
509 515
510 return 1; 516 return 1;
511} 517}
518EXPORT_SYMBOL_GPL(ip_nat_icmp_reply_translation);
512 519
513/* Protocol registration. */ 520/* Protocol registration. */
514int ip_nat_protocol_register(struct ip_nat_protocol *proto) 521int ip_nat_protocol_register(struct ip_nat_protocol *proto)
@@ -525,6 +532,7 @@ int ip_nat_protocol_register(struct ip_nat_protocol *proto)
525 write_unlock_bh(&ip_nat_lock); 532 write_unlock_bh(&ip_nat_lock);
526 return ret; 533 return ret;
527} 534}
535EXPORT_SYMBOL(ip_nat_protocol_register);
528 536
529/* Noone stores the protocol anywhere; simply delete it. */ 537/* Noone stores the protocol anywhere; simply delete it. */
530void ip_nat_protocol_unregister(struct ip_nat_protocol *proto) 538void ip_nat_protocol_unregister(struct ip_nat_protocol *proto)
@@ -536,6 +544,7 @@ void ip_nat_protocol_unregister(struct ip_nat_protocol *proto)
536 /* Someone could be still looking at the proto in a bh. */ 544 /* Someone could be still looking at the proto in a bh. */
537 synchronize_net(); 545 synchronize_net();
538} 546}
547EXPORT_SYMBOL(ip_nat_protocol_unregister);
539 548
540#if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \ 549#if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \
541 defined(CONFIG_IP_NF_CONNTRACK_NETLINK_MODULE) 550 defined(CONFIG_IP_NF_CONNTRACK_NETLINK_MODULE)
@@ -578,9 +587,11 @@ ip_nat_port_nfattr_to_range(struct nfattr *tb[], struct ip_nat_range *range)
578 587
579 return ret; 588 return ret;
580} 589}
590EXPORT_SYMBOL_GPL(ip_nat_port_nfattr_to_range);
591EXPORT_SYMBOL_GPL(ip_nat_port_range_to_nfattr);
581#endif 592#endif
582 593
583int __init ip_nat_init(void) 594static int __init ip_nat_init(void)
584{ 595{
585 size_t i; 596 size_t i;
586 597
@@ -622,10 +633,14 @@ static int clean_nat(struct ip_conntrack *i, void *data)
622 return 0; 633 return 0;
623} 634}
624 635
625/* Not __exit: called from ip_nat_standalone.c:init_or_cleanup() --RR */ 636static void __exit ip_nat_cleanup(void)
626void ip_nat_cleanup(void)
627{ 637{
628 ip_ct_iterate_cleanup(&clean_nat, NULL); 638 ip_ct_iterate_cleanup(&clean_nat, NULL);
629 ip_conntrack_destroyed = NULL; 639 ip_conntrack_destroyed = NULL;
630 vfree(bysource); 640 vfree(bysource);
631} 641}
642
643MODULE_LICENSE("GPL");
644
645module_init(ip_nat_init);
646module_exit(ip_nat_cleanup);
diff --git a/net/ipv4/netfilter/ip_nat_helper.c b/net/ipv4/netfilter/ip_nat_helper.c
index d2dd5d313556..5d506e0564d5 100644
--- a/net/ipv4/netfilter/ip_nat_helper.c
+++ b/net/ipv4/netfilter/ip_nat_helper.c
@@ -199,6 +199,7 @@ ip_nat_mangle_tcp_packet(struct sk_buff **pskb,
199 } 199 }
200 return 1; 200 return 1;
201} 201}
202EXPORT_SYMBOL(ip_nat_mangle_tcp_packet);
202 203
203/* Generic function for mangling variable-length address changes inside 204/* Generic function for mangling variable-length address changes inside
204 * NATed UDP connections (like the CONNECT DATA XXXXX MESG XXXXX INDEX XXXXX 205 * NATed UDP connections (like the CONNECT DATA XXXXX MESG XXXXX INDEX XXXXX
@@ -256,6 +257,7 @@ ip_nat_mangle_udp_packet(struct sk_buff **pskb,
256 257
257 return 1; 258 return 1;
258} 259}
260EXPORT_SYMBOL(ip_nat_mangle_udp_packet);
259 261
260/* Adjust one found SACK option including checksum correction */ 262/* Adjust one found SACK option including checksum correction */
261static void 263static void
@@ -399,6 +401,7 @@ ip_nat_seq_adjust(struct sk_buff **pskb,
399 401
400 return 1; 402 return 1;
401} 403}
404EXPORT_SYMBOL(ip_nat_seq_adjust);
402 405
403/* Setup NAT on this expected conntrack so it follows master. */ 406/* Setup NAT on this expected conntrack so it follows master. */
404/* If we fail to get a free NAT slot, we'll get dropped on confirm */ 407/* If we fail to get a free NAT slot, we'll get dropped on confirm */
@@ -425,3 +428,4 @@ void ip_nat_follow_master(struct ip_conntrack *ct,
425 /* hook doesn't matter, but it has to do destination manip */ 428 /* hook doesn't matter, but it has to do destination manip */
426 ip_nat_setup_info(ct, &range, NF_IP_PRE_ROUTING); 429 ip_nat_setup_info(ct, &range, NF_IP_PRE_ROUTING);
427} 430}
431EXPORT_SYMBOL(ip_nat_follow_master);
diff --git a/net/ipv4/netfilter/ip_nat_helper_pptp.c b/net/ipv4/netfilter/ip_nat_helper_pptp.c
new file mode 100644
index 000000000000..3cdd0684d30d
--- /dev/null
+++ b/net/ipv4/netfilter/ip_nat_helper_pptp.c
@@ -0,0 +1,401 @@
1/*
2 * ip_nat_pptp.c - Version 3.0
3 *
4 * NAT support for PPTP (Point to Point Tunneling Protocol).
5 * PPTP is a a protocol for creating virtual private networks.
6 * It is a specification defined by Microsoft and some vendors
7 * working with Microsoft. PPTP is built on top of a modified
8 * version of the Internet Generic Routing Encapsulation Protocol.
9 * GRE is defined in RFC 1701 and RFC 1702. Documentation of
10 * PPTP can be found in RFC 2637
11 *
12 * (C) 2000-2005 by Harald Welte <laforge@gnumonks.org>
13 *
14 * Development of this code funded by Astaro AG (http://www.astaro.com/)
15 *
16 * TODO: - NAT to a unique tuple, not to TCP source port
17 * (needs netfilter tuple reservation)
18 *
19 * Changes:
20 * 2002-02-10 - Version 1.3
21 * - Use ip_nat_mangle_tcp_packet() because of cloned skb's
22 * in local connections (Philip Craig <philipc@snapgear.com>)
23 * - add checks for magicCookie and pptp version
24 * - make argument list of pptp_{out,in}bound_packet() shorter
25 * - move to C99 style initializers
26 * - print version number at module loadtime
27 * 2003-09-22 - Version 1.5
28 * - use SNATed tcp sourceport as callid, since we get called before
29 * TCP header is mangled (Philip Craig <philipc@snapgear.com>)
30 * 2004-10-22 - Version 2.0
31 * - kernel 2.6.x version
32 * 2005-06-10 - Version 3.0
33 * - kernel >= 2.6.11 version,
34 * funded by Oxcoda NetBox Blue (http://www.netboxblue.com/)
35 *
36 */
37
38#include <linux/config.h>
39#include <linux/module.h>
40#include <linux/ip.h>
41#include <linux/tcp.h>
42#include <net/tcp.h>
43
44#include <linux/netfilter_ipv4/ip_nat.h>
45#include <linux/netfilter_ipv4/ip_nat_rule.h>
46#include <linux/netfilter_ipv4/ip_nat_helper.h>
47#include <linux/netfilter_ipv4/ip_nat_pptp.h>
48#include <linux/netfilter_ipv4/ip_conntrack_core.h>
49#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
50#include <linux/netfilter_ipv4/ip_conntrack_proto_gre.h>
51#include <linux/netfilter_ipv4/ip_conntrack_pptp.h>
52
53#define IP_NAT_PPTP_VERSION "3.0"
54
55MODULE_LICENSE("GPL");
56MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
57MODULE_DESCRIPTION("Netfilter NAT helper module for PPTP");
58
59
60#if 0
61extern const char *pptp_msg_name[];
62#define DEBUGP(format, args...) printk(KERN_DEBUG "%s:%s: " format, __FILE__, \
63 __FUNCTION__, ## args)
64#else
65#define DEBUGP(format, args...)
66#endif
67
68static void pptp_nat_expected(struct ip_conntrack *ct,
69 struct ip_conntrack_expect *exp)
70{
71 struct ip_conntrack *master = ct->master;
72 struct ip_conntrack_expect *other_exp;
73 struct ip_conntrack_tuple t;
74 struct ip_ct_pptp_master *ct_pptp_info;
75 struct ip_nat_pptp *nat_pptp_info;
76
77 ct_pptp_info = &master->help.ct_pptp_info;
78 nat_pptp_info = &master->nat.help.nat_pptp_info;
79
80 /* And here goes the grand finale of corrosion... */
81
82 if (exp->dir == IP_CT_DIR_ORIGINAL) {
83 DEBUGP("we are PNS->PAC\n");
84 /* therefore, build tuple for PAC->PNS */
85 t.src.ip = master->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip;
86 t.src.u.gre.key = htons(master->help.ct_pptp_info.pac_call_id);
87 t.dst.ip = master->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip;
88 t.dst.u.gre.key = htons(master->help.ct_pptp_info.pns_call_id);
89 t.dst.protonum = IPPROTO_GRE;
90 } else {
91 DEBUGP("we are PAC->PNS\n");
92 /* build tuple for PNS->PAC */
93 t.src.ip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip;
94 t.src.u.gre.key =
95 htons(master->nat.help.nat_pptp_info.pns_call_id);
96 t.dst.ip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip;
97 t.dst.u.gre.key =
98 htons(master->nat.help.nat_pptp_info.pac_call_id);
99 t.dst.protonum = IPPROTO_GRE;
100 }
101
102 DEBUGP("trying to unexpect other dir: ");
103 DUMP_TUPLE(&t);
104 other_exp = ip_conntrack_expect_find(&t);
105 if (other_exp) {
106 ip_conntrack_unexpect_related(other_exp);
107 ip_conntrack_expect_put(other_exp);
108 DEBUGP("success\n");
109 } else {
110 DEBUGP("not found!\n");
111 }
112
113 ip_nat_follow_master(ct, exp);
114}
115
116/* outbound packets == from PNS to PAC */
117static int
118pptp_outbound_pkt(struct sk_buff **pskb,
119 struct ip_conntrack *ct,
120 enum ip_conntrack_info ctinfo,
121 struct PptpControlHeader *ctlh,
122 union pptp_ctrl_union *pptpReq)
123
124{
125 struct ip_ct_pptp_master *ct_pptp_info = &ct->help.ct_pptp_info;
126 struct ip_nat_pptp *nat_pptp_info = &ct->nat.help.nat_pptp_info;
127
128 u_int16_t msg, *cid = NULL, new_callid;
129
130 new_callid = htons(ct_pptp_info->pns_call_id);
131
132 switch (msg = ntohs(ctlh->messageType)) {
133 case PPTP_OUT_CALL_REQUEST:
134 cid = &pptpReq->ocreq.callID;
135 /* FIXME: ideally we would want to reserve a call ID
136 * here. current netfilter NAT core is not able to do
137 * this :( For now we use TCP source port. This breaks
138 * multiple calls within one control session */
139
140 /* save original call ID in nat_info */
141 nat_pptp_info->pns_call_id = ct_pptp_info->pns_call_id;
142
143 /* don't use tcph->source since we are at a DSTmanip
144 * hook (e.g. PREROUTING) and pkt is not mangled yet */
145 new_callid = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.tcp.port;
146
147 /* save new call ID in ct info */
148 ct_pptp_info->pns_call_id = ntohs(new_callid);
149 break;
150 case PPTP_IN_CALL_REPLY:
151 cid = &pptpReq->icreq.callID;
152 break;
153 case PPTP_CALL_CLEAR_REQUEST:
154 cid = &pptpReq->clrreq.callID;
155 break;
156 default:
157 DEBUGP("unknown outbound packet 0x%04x:%s\n", msg,
158 (msg <= PPTP_MSG_MAX)?
159 pptp_msg_name[msg]:pptp_msg_name[0]);
160 /* fall through */
161
162 case PPTP_SET_LINK_INFO:
163 /* only need to NAT in case PAC is behind NAT box */
164 case PPTP_START_SESSION_REQUEST:
165 case PPTP_START_SESSION_REPLY:
166 case PPTP_STOP_SESSION_REQUEST:
167 case PPTP_STOP_SESSION_REPLY:
168 case PPTP_ECHO_REQUEST:
169 case PPTP_ECHO_REPLY:
170 /* no need to alter packet */
171 return NF_ACCEPT;
172 }
173
174 /* only OUT_CALL_REQUEST, IN_CALL_REPLY, CALL_CLEAR_REQUEST pass
175 * down to here */
176
177 IP_NF_ASSERT(cid);
178
179 DEBUGP("altering call id from 0x%04x to 0x%04x\n",
180 ntohs(*cid), ntohs(new_callid));
181
182 /* mangle packet */
183 if (ip_nat_mangle_tcp_packet(pskb, ct, ctinfo,
184 (void *)cid - ((void *)ctlh - sizeof(struct pptp_pkt_hdr)),
185 sizeof(new_callid),
186 (char *)&new_callid,
187 sizeof(new_callid)) == 0)
188 return NF_DROP;
189
190 return NF_ACCEPT;
191}
192
193static int
194pptp_exp_gre(struct ip_conntrack_expect *expect_orig,
195 struct ip_conntrack_expect *expect_reply)
196{
197 struct ip_ct_pptp_master *ct_pptp_info =
198 &expect_orig->master->help.ct_pptp_info;
199 struct ip_nat_pptp *nat_pptp_info =
200 &expect_orig->master->nat.help.nat_pptp_info;
201
202 struct ip_conntrack *ct = expect_orig->master;
203
204 struct ip_conntrack_tuple inv_t;
205 struct ip_conntrack_tuple *orig_t, *reply_t;
206
207 /* save original PAC call ID in nat_info */
208 nat_pptp_info->pac_call_id = ct_pptp_info->pac_call_id;
209
210 /* alter expectation */
211 orig_t = &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple;
212 reply_t = &ct->tuplehash[IP_CT_DIR_REPLY].tuple;
213
214 /* alter expectation for PNS->PAC direction */
215 invert_tuplepr(&inv_t, &expect_orig->tuple);
216 expect_orig->saved_proto.gre.key = htons(nat_pptp_info->pac_call_id);
217 expect_orig->tuple.src.u.gre.key = htons(nat_pptp_info->pns_call_id);
218 expect_orig->tuple.dst.u.gre.key = htons(ct_pptp_info->pac_call_id);
219 inv_t.src.ip = reply_t->src.ip;
220 inv_t.dst.ip = reply_t->dst.ip;
221 inv_t.src.u.gre.key = htons(nat_pptp_info->pac_call_id);
222 inv_t.dst.u.gre.key = htons(ct_pptp_info->pns_call_id);
223
224 if (!ip_conntrack_expect_related(expect_orig)) {
225 DEBUGP("successfully registered expect\n");
226 } else {
227 DEBUGP("can't expect_related(expect_orig)\n");
228 return 1;
229 }
230
231 /* alter expectation for PAC->PNS direction */
232 invert_tuplepr(&inv_t, &expect_reply->tuple);
233 expect_reply->saved_proto.gre.key = htons(nat_pptp_info->pns_call_id);
234 expect_reply->tuple.src.u.gre.key = htons(nat_pptp_info->pac_call_id);
235 expect_reply->tuple.dst.u.gre.key = htons(ct_pptp_info->pns_call_id);
236 inv_t.src.ip = orig_t->src.ip;
237 inv_t.dst.ip = orig_t->dst.ip;
238 inv_t.src.u.gre.key = htons(nat_pptp_info->pns_call_id);
239 inv_t.dst.u.gre.key = htons(ct_pptp_info->pac_call_id);
240
241 if (!ip_conntrack_expect_related(expect_reply)) {
242 DEBUGP("successfully registered expect\n");
243 } else {
244 DEBUGP("can't expect_related(expect_reply)\n");
245 ip_conntrack_unexpect_related(expect_orig);
246 return 1;
247 }
248
249 if (ip_ct_gre_keymap_add(ct, &expect_reply->tuple, 0) < 0) {
250 DEBUGP("can't register original keymap\n");
251 ip_conntrack_unexpect_related(expect_orig);
252 ip_conntrack_unexpect_related(expect_reply);
253 return 1;
254 }
255
256 if (ip_ct_gre_keymap_add(ct, &inv_t, 1) < 0) {
257 DEBUGP("can't register reply keymap\n");
258 ip_conntrack_unexpect_related(expect_orig);
259 ip_conntrack_unexpect_related(expect_reply);
260 ip_ct_gre_keymap_destroy(ct);
261 return 1;
262 }
263
264 return 0;
265}
266
267/* inbound packets == from PAC to PNS */
268static int
269pptp_inbound_pkt(struct sk_buff **pskb,
270 struct ip_conntrack *ct,
271 enum ip_conntrack_info ctinfo,
272 struct PptpControlHeader *ctlh,
273 union pptp_ctrl_union *pptpReq)
274{
275 struct ip_nat_pptp *nat_pptp_info = &ct->nat.help.nat_pptp_info;
276 u_int16_t msg, new_cid = 0, new_pcid, *pcid = NULL, *cid = NULL;
277
278 int ret = NF_ACCEPT, rv;
279
280 new_pcid = htons(nat_pptp_info->pns_call_id);
281
282 switch (msg = ntohs(ctlh->messageType)) {
283 case PPTP_OUT_CALL_REPLY:
284 pcid = &pptpReq->ocack.peersCallID;
285 cid = &pptpReq->ocack.callID;
286 break;
287 case PPTP_IN_CALL_CONNECT:
288 pcid = &pptpReq->iccon.peersCallID;
289 break;
290 case PPTP_IN_CALL_REQUEST:
291 /* only need to nat in case PAC is behind NAT box */
292 break;
293 case PPTP_WAN_ERROR_NOTIFY:
294 pcid = &pptpReq->wanerr.peersCallID;
295 break;
296 case PPTP_CALL_DISCONNECT_NOTIFY:
297 pcid = &pptpReq->disc.callID;
298 break;
299 case PPTP_SET_LINK_INFO:
300 pcid = &pptpReq->setlink.peersCallID;
301 break;
302
303 default:
304 DEBUGP("unknown inbound packet %s\n", (msg <= PPTP_MSG_MAX)?
305 pptp_msg_name[msg]:pptp_msg_name[0]);
306 /* fall through */
307
308 case PPTP_START_SESSION_REQUEST:
309 case PPTP_START_SESSION_REPLY:
310 case PPTP_STOP_SESSION_REQUEST:
311 case PPTP_STOP_SESSION_REPLY:
312 case PPTP_ECHO_REQUEST:
313 case PPTP_ECHO_REPLY:
314 /* no need to alter packet */
315 return NF_ACCEPT;
316 }
317
318 /* only OUT_CALL_REPLY, IN_CALL_CONNECT, IN_CALL_REQUEST,
319 * WAN_ERROR_NOTIFY, CALL_DISCONNECT_NOTIFY pass down here */
320
321 /* mangle packet */
322 IP_NF_ASSERT(pcid);
323 DEBUGP("altering peer call id from 0x%04x to 0x%04x\n",
324 ntohs(*pcid), ntohs(new_pcid));
325
326 rv = ip_nat_mangle_tcp_packet(pskb, ct, ctinfo,
327 (void *)pcid - ((void *)ctlh - sizeof(struct pptp_pkt_hdr)),
328 sizeof(new_pcid), (char *)&new_pcid,
329 sizeof(new_pcid));
330 if (rv != NF_ACCEPT)
331 return rv;
332
333 if (new_cid) {
334 IP_NF_ASSERT(cid);
335 DEBUGP("altering call id from 0x%04x to 0x%04x\n",
336 ntohs(*cid), ntohs(new_cid));
337 rv = ip_nat_mangle_tcp_packet(pskb, ct, ctinfo,
338 (void *)cid - ((void *)ctlh - sizeof(struct pptp_pkt_hdr)),
339 sizeof(new_cid),
340 (char *)&new_cid,
341 sizeof(new_cid));
342 if (rv != NF_ACCEPT)
343 return rv;
344 }
345
346 /* check for earlier return value of 'switch' above */
347 if (ret != NF_ACCEPT)
348 return ret;
349
350 /* great, at least we don't need to resize packets */
351 return NF_ACCEPT;
352}
353
354
355extern int __init ip_nat_proto_gre_init(void);
356extern void __exit ip_nat_proto_gre_fini(void);
357
358static int __init init(void)
359{
360 int ret;
361
362 DEBUGP("%s: registering NAT helper\n", __FILE__);
363
364 ret = ip_nat_proto_gre_init();
365 if (ret < 0)
366 return ret;
367
368 BUG_ON(ip_nat_pptp_hook_outbound);
369 ip_nat_pptp_hook_outbound = &pptp_outbound_pkt;
370
371 BUG_ON(ip_nat_pptp_hook_inbound);
372 ip_nat_pptp_hook_inbound = &pptp_inbound_pkt;
373
374 BUG_ON(ip_nat_pptp_hook_exp_gre);
375 ip_nat_pptp_hook_exp_gre = &pptp_exp_gre;
376
377 BUG_ON(ip_nat_pptp_hook_expectfn);
378 ip_nat_pptp_hook_expectfn = &pptp_nat_expected;
379
380 printk("ip_nat_pptp version %s loaded\n", IP_NAT_PPTP_VERSION);
381 return 0;
382}
383
384static void __exit fini(void)
385{
386 DEBUGP("cleanup_module\n" );
387
388 ip_nat_pptp_hook_expectfn = NULL;
389 ip_nat_pptp_hook_exp_gre = NULL;
390 ip_nat_pptp_hook_inbound = NULL;
391 ip_nat_pptp_hook_outbound = NULL;
392
393 ip_nat_proto_gre_fini();
394 /* Make sure noone calls it, meanwhile */
395 synchronize_net();
396
397 printk("ip_nat_pptp version %s unloaded\n", IP_NAT_PPTP_VERSION);
398}
399
400module_init(init);
401module_exit(fini);
diff --git a/net/ipv4/netfilter/ip_nat_proto_gre.c b/net/ipv4/netfilter/ip_nat_proto_gre.c
new file mode 100644
index 000000000000..7c1285401672
--- /dev/null
+++ b/net/ipv4/netfilter/ip_nat_proto_gre.c
@@ -0,0 +1,214 @@
1/*
2 * ip_nat_proto_gre.c - Version 2.0
3 *
4 * NAT protocol helper module for GRE.
5 *
6 * GRE is a generic encapsulation protocol, which is generally not very
7 * suited for NAT, as it has no protocol-specific part as port numbers.
8 *
9 * It has an optional key field, which may help us distinguishing two
10 * connections between the same two hosts.
11 *
12 * GRE is defined in RFC 1701 and RFC 1702, as well as RFC 2784
13 *
14 * PPTP is built on top of a modified version of GRE, and has a mandatory
15 * field called "CallID", which serves us for the same purpose as the key
16 * field in plain GRE.
17 *
18 * Documentation about PPTP can be found in RFC 2637
19 *
20 * (C) 2000-2005 by Harald Welte <laforge@gnumonks.org>
21 *
22 * Development of this code funded by Astaro AG (http://www.astaro.com/)
23 *
24 */
25
26#include <linux/config.h>
27#include <linux/module.h>
28#include <linux/ip.h>
29#include <linux/netfilter_ipv4/ip_nat.h>
30#include <linux/netfilter_ipv4/ip_nat_rule.h>
31#include <linux/netfilter_ipv4/ip_nat_protocol.h>
32#include <linux/netfilter_ipv4/ip_conntrack_proto_gre.h>
33
34MODULE_LICENSE("GPL");
35MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
36MODULE_DESCRIPTION("Netfilter NAT protocol helper module for GRE");
37
38#if 0
39#define DEBUGP(format, args...) printk(KERN_DEBUG "%s:%s: " format, __FILE__, \
40 __FUNCTION__, ## args)
41#else
42#define DEBUGP(x, args...)
43#endif
44
45/* is key in given range between min and max */
46static int
47gre_in_range(const struct ip_conntrack_tuple *tuple,
48 enum ip_nat_manip_type maniptype,
49 const union ip_conntrack_manip_proto *min,
50 const union ip_conntrack_manip_proto *max)
51{
52 u_int32_t key;
53
54 if (maniptype == IP_NAT_MANIP_SRC)
55 key = tuple->src.u.gre.key;
56 else
57 key = tuple->dst.u.gre.key;
58
59 return ntohl(key) >= ntohl(min->gre.key)
60 && ntohl(key) <= ntohl(max->gre.key);
61}
62
63/* generate unique tuple ... */
64static int
65gre_unique_tuple(struct ip_conntrack_tuple *tuple,
66 const struct ip_nat_range *range,
67 enum ip_nat_manip_type maniptype,
68 const struct ip_conntrack *conntrack)
69{
70 static u_int16_t key;
71 u_int16_t *keyptr;
72 unsigned int min, i, range_size;
73
74 if (maniptype == IP_NAT_MANIP_SRC)
75 keyptr = &tuple->src.u.gre.key;
76 else
77 keyptr = &tuple->dst.u.gre.key;
78
79 if (!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED)) {
80 DEBUGP("%p: NATing GRE PPTP\n", conntrack);
81 min = 1;
82 range_size = 0xffff;
83 } else {
84 min = ntohl(range->min.gre.key);
85 range_size = ntohl(range->max.gre.key) - min + 1;
86 }
87
88 DEBUGP("min = %u, range_size = %u\n", min, range_size);
89
90 for (i = 0; i < range_size; i++, key++) {
91 *keyptr = htonl(min + key % range_size);
92 if (!ip_nat_used_tuple(tuple, conntrack))
93 return 1;
94 }
95
96 DEBUGP("%p: no NAT mapping\n", conntrack);
97
98 return 0;
99}
100
101/* manipulate a GRE packet according to maniptype */
102static int
103gre_manip_pkt(struct sk_buff **pskb,
104 unsigned int iphdroff,
105 const struct ip_conntrack_tuple *tuple,
106 enum ip_nat_manip_type maniptype)
107{
108 struct gre_hdr *greh;
109 struct gre_hdr_pptp *pgreh;
110 struct iphdr *iph = (struct iphdr *)((*pskb)->data + iphdroff);
111 unsigned int hdroff = iphdroff + iph->ihl*4;
112
113 /* pgreh includes two optional 32bit fields which are not required
114 * to be there. That's where the magic '8' comes from */
115 if (!skb_make_writable(pskb, hdroff + sizeof(*pgreh)-8))
116 return 0;
117
118 greh = (void *)(*pskb)->data + hdroff;
119 pgreh = (struct gre_hdr_pptp *) greh;
120
121 /* we only have destination manip of a packet, since 'source key'
122 * is not present in the packet itself */
123 if (maniptype == IP_NAT_MANIP_DST) {
124 /* key manipulation is always dest */
125 switch (greh->version) {
126 case 0:
127 if (!greh->key) {
128 DEBUGP("can't nat GRE w/o key\n");
129 break;
130 }
131 if (greh->csum) {
132 /* FIXME: Never tested this code... */
133 *(gre_csum(greh)) =
134 ip_nat_cheat_check(~*(gre_key(greh)),
135 tuple->dst.u.gre.key,
136 *(gre_csum(greh)));
137 }
138 *(gre_key(greh)) = tuple->dst.u.gre.key;
139 break;
140 case GRE_VERSION_PPTP:
141 DEBUGP("call_id -> 0x%04x\n",
142 ntohl(tuple->dst.u.gre.key));
143 pgreh->call_id = htons(ntohl(tuple->dst.u.gre.key));
144 break;
145 default:
146 DEBUGP("can't nat unknown GRE version\n");
147 return 0;
148 break;
149 }
150 }
151 return 1;
152}
153
154/* print out a nat tuple */
155static unsigned int
156gre_print(char *buffer,
157 const struct ip_conntrack_tuple *match,
158 const struct ip_conntrack_tuple *mask)
159{
160 unsigned int len = 0;
161
162 if (mask->src.u.gre.key)
163 len += sprintf(buffer + len, "srckey=0x%x ",
164 ntohl(match->src.u.gre.key));
165
166 if (mask->dst.u.gre.key)
167 len += sprintf(buffer + len, "dstkey=0x%x ",
168 ntohl(match->src.u.gre.key));
169
170 return len;
171}
172
173/* print a range of keys */
174static unsigned int
175gre_print_range(char *buffer, const struct ip_nat_range *range)
176{
177 if (range->min.gre.key != 0
178 || range->max.gre.key != 0xFFFF) {
179 if (range->min.gre.key == range->max.gre.key)
180 return sprintf(buffer, "key 0x%x ",
181 ntohl(range->min.gre.key));
182 else
183 return sprintf(buffer, "keys 0x%u-0x%u ",
184 ntohl(range->min.gre.key),
185 ntohl(range->max.gre.key));
186 } else
187 return 0;
188}
189
190/* nat helper struct */
191static struct ip_nat_protocol gre = {
192 .name = "GRE",
193 .protonum = IPPROTO_GRE,
194 .manip_pkt = gre_manip_pkt,
195 .in_range = gre_in_range,
196 .unique_tuple = gre_unique_tuple,
197 .print = gre_print,
198 .print_range = gre_print_range,
199#if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \
200 defined(CONFIG_IP_NF_CONNTRACK_NETLINK_MODULE)
201 .range_to_nfattr = ip_nat_port_range_to_nfattr,
202 .nfattr_to_range = ip_nat_port_nfattr_to_range,
203#endif
204};
205
206int __init ip_nat_proto_gre_init(void)
207{
208 return ip_nat_protocol_register(&gre);
209}
210
211void __exit ip_nat_proto_gre_fini(void)
212{
213 ip_nat_protocol_unregister(&gre);
214}
diff --git a/net/ipv4/netfilter/ip_nat_standalone.c b/net/ipv4/netfilter/ip_nat_standalone.c
index 0ff368b131f6..30cd4e18c129 100644
--- a/net/ipv4/netfilter/ip_nat_standalone.c
+++ b/net/ipv4/netfilter/ip_nat_standalone.c
@@ -108,8 +108,8 @@ ip_nat_fn(unsigned int hooknum,
108 case IP_CT_RELATED: 108 case IP_CT_RELATED:
109 case IP_CT_RELATED+IP_CT_IS_REPLY: 109 case IP_CT_RELATED+IP_CT_IS_REPLY:
110 if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) { 110 if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) {
111 if (!icmp_reply_translation(pskb, ct, maniptype, 111 if (!ip_nat_icmp_reply_translation(pskb, ct, maniptype,
112 CTINFO2DIR(ctinfo))) 112 CTINFO2DIR(ctinfo)))
113 return NF_DROP; 113 return NF_DROP;
114 else 114 else
115 return NF_ACCEPT; 115 return NF_ACCEPT;
@@ -152,7 +152,7 @@ ip_nat_fn(unsigned int hooknum,
152 } 152 }
153 153
154 IP_NF_ASSERT(info); 154 IP_NF_ASSERT(info);
155 return nat_packet(ct, ctinfo, hooknum, pskb); 155 return ip_nat_packet(ct, ctinfo, hooknum, pskb);
156} 156}
157 157
158static unsigned int 158static unsigned int
@@ -325,15 +325,10 @@ static int init_or_cleanup(int init)
325 printk("ip_nat_init: can't setup rules.\n"); 325 printk("ip_nat_init: can't setup rules.\n");
326 goto cleanup_nothing; 326 goto cleanup_nothing;
327 } 327 }
328 ret = ip_nat_init();
329 if (ret < 0) {
330 printk("ip_nat_init: can't setup rules.\n");
331 goto cleanup_rule_init;
332 }
333 ret = nf_register_hook(&ip_nat_in_ops); 328 ret = nf_register_hook(&ip_nat_in_ops);
334 if (ret < 0) { 329 if (ret < 0) {
335 printk("ip_nat_init: can't register in hook.\n"); 330 printk("ip_nat_init: can't register in hook.\n");
336 goto cleanup_nat; 331 goto cleanup_rule_init;
337 } 332 }
338 ret = nf_register_hook(&ip_nat_out_ops); 333 ret = nf_register_hook(&ip_nat_out_ops);
339 if (ret < 0) { 334 if (ret < 0) {
@@ -374,8 +369,6 @@ static int init_or_cleanup(int init)
374 nf_unregister_hook(&ip_nat_out_ops); 369 nf_unregister_hook(&ip_nat_out_ops);
375 cleanup_inops: 370 cleanup_inops:
376 nf_unregister_hook(&ip_nat_in_ops); 371 nf_unregister_hook(&ip_nat_in_ops);
377 cleanup_nat:
378 ip_nat_cleanup();
379 cleanup_rule_init: 372 cleanup_rule_init:
380 ip_nat_rule_cleanup(); 373 ip_nat_rule_cleanup();
381 cleanup_nothing: 374 cleanup_nothing:
@@ -395,14 +388,4 @@ static void __exit fini(void)
395module_init(init); 388module_init(init);
396module_exit(fini); 389module_exit(fini);
397 390
398EXPORT_SYMBOL(ip_nat_setup_info);
399EXPORT_SYMBOL(ip_nat_protocol_register);
400EXPORT_SYMBOL(ip_nat_protocol_unregister);
401EXPORT_SYMBOL_GPL(ip_nat_proto_find_get);
402EXPORT_SYMBOL_GPL(ip_nat_proto_put);
403EXPORT_SYMBOL(ip_nat_cheat_check);
404EXPORT_SYMBOL(ip_nat_mangle_tcp_packet);
405EXPORT_SYMBOL(ip_nat_mangle_udp_packet);
406EXPORT_SYMBOL(ip_nat_used_tuple);
407EXPORT_SYMBOL(ip_nat_follow_master);
408MODULE_LICENSE("GPL"); 391MODULE_LICENSE("GPL");
diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c
index d54f14d926f6..36339eb39e17 100644
--- a/net/ipv4/netfilter/ip_queue.c
+++ b/net/ipv4/netfilter/ip_queue.c
@@ -240,8 +240,8 @@ ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
240 240
241 pmsg->packet_id = (unsigned long )entry; 241 pmsg->packet_id = (unsigned long )entry;
242 pmsg->data_len = data_len; 242 pmsg->data_len = data_len;
243 pmsg->timestamp_sec = skb_tv_base.tv_sec + entry->skb->tstamp.off_sec; 243 pmsg->timestamp_sec = entry->skb->tstamp.off_sec;
244 pmsg->timestamp_usec = skb_tv_base.tv_usec + entry->skb->tstamp.off_usec; 244 pmsg->timestamp_usec = entry->skb->tstamp.off_usec;
245 pmsg->mark = entry->skb->nfmark; 245 pmsg->mark = entry->skb->nfmark;
246 pmsg->hook = entry->info->hook; 246 pmsg->hook = entry->info->hook;
247 pmsg->hw_protocol = entry->skb->protocol; 247 pmsg->hw_protocol = entry->skb->protocol;
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index 7d38913754b1..9bcb398fbc1f 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -13,6 +13,7 @@
13#include <linux/config.h> 13#include <linux/config.h>
14#include <linux/proc_fs.h> 14#include <linux/proc_fs.h>
15#include <linux/jhash.h> 15#include <linux/jhash.h>
16#include <linux/bitops.h>
16#include <linux/skbuff.h> 17#include <linux/skbuff.h>
17#include <linux/ip.h> 18#include <linux/ip.h>
18#include <linux/tcp.h> 19#include <linux/tcp.h>
@@ -30,7 +31,7 @@
30#include <linux/netfilter_ipv4/ipt_CLUSTERIP.h> 31#include <linux/netfilter_ipv4/ipt_CLUSTERIP.h>
31#include <linux/netfilter_ipv4/ip_conntrack.h> 32#include <linux/netfilter_ipv4/ip_conntrack.h>
32 33
33#define CLUSTERIP_VERSION "0.7" 34#define CLUSTERIP_VERSION "0.8"
34 35
35#define DEBUG_CLUSTERIP 36#define DEBUG_CLUSTERIP
36 37
@@ -49,13 +50,14 @@ MODULE_DESCRIPTION("iptables target for CLUSTERIP");
49struct clusterip_config { 50struct clusterip_config {
50 struct list_head list; /* list of all configs */ 51 struct list_head list; /* list of all configs */
51 atomic_t refcount; /* reference count */ 52 atomic_t refcount; /* reference count */
53 atomic_t entries; /* number of entries/rules
54 * referencing us */
52 55
53 u_int32_t clusterip; /* the IP address */ 56 u_int32_t clusterip; /* the IP address */
54 u_int8_t clustermac[ETH_ALEN]; /* the MAC address */ 57 u_int8_t clustermac[ETH_ALEN]; /* the MAC address */
55 struct net_device *dev; /* device */ 58 struct net_device *dev; /* device */
56 u_int16_t num_total_nodes; /* total number of nodes */ 59 u_int16_t num_total_nodes; /* total number of nodes */
57 u_int16_t num_local_nodes; /* number of local nodes */ 60 unsigned long local_nodes; /* node number array */
58 u_int16_t local_nodes[CLUSTERIP_MAX_NODES]; /* node number array */
59 61
60#ifdef CONFIG_PROC_FS 62#ifdef CONFIG_PROC_FS
61 struct proc_dir_entry *pde; /* proc dir entry */ 63 struct proc_dir_entry *pde; /* proc dir entry */
@@ -66,8 +68,7 @@ struct clusterip_config {
66 68
67static LIST_HEAD(clusterip_configs); 69static LIST_HEAD(clusterip_configs);
68 70
69/* clusterip_lock protects the clusterip_configs list _AND_ the configurable 71/* clusterip_lock protects the clusterip_configs list */
70 * data within all structurses (num_local_nodes, local_nodes[]) */
71static DEFINE_RWLOCK(clusterip_lock); 72static DEFINE_RWLOCK(clusterip_lock);
72 73
73#ifdef CONFIG_PROC_FS 74#ifdef CONFIG_PROC_FS
@@ -76,23 +77,48 @@ static struct proc_dir_entry *clusterip_procdir;
76#endif 77#endif
77 78
78static inline void 79static inline void
79clusterip_config_get(struct clusterip_config *c) { 80clusterip_config_get(struct clusterip_config *c)
81{
80 atomic_inc(&c->refcount); 82 atomic_inc(&c->refcount);
81} 83}
82 84
83static inline void 85static inline void
84clusterip_config_put(struct clusterip_config *c) { 86clusterip_config_put(struct clusterip_config *c)
85 if (atomic_dec_and_test(&c->refcount)) { 87{
88 if (atomic_dec_and_test(&c->refcount))
89 kfree(c);
90}
91
92/* increase the count of entries(rules) using/referencing this config */
93static inline void
94clusterip_config_entry_get(struct clusterip_config *c)
95{
96 atomic_inc(&c->entries);
97}
98
99/* decrease the count of entries using/referencing this config. If last
100 * entry(rule) is removed, remove the config from lists, but don't free it
101 * yet, since proc-files could still be holding references */
102static inline void
103clusterip_config_entry_put(struct clusterip_config *c)
104{
105 if (atomic_dec_and_test(&c->entries)) {
86 write_lock_bh(&clusterip_lock); 106 write_lock_bh(&clusterip_lock);
87 list_del(&c->list); 107 list_del(&c->list);
88 write_unlock_bh(&clusterip_lock); 108 write_unlock_bh(&clusterip_lock);
109
89 dev_mc_delete(c->dev, c->clustermac, ETH_ALEN, 0); 110 dev_mc_delete(c->dev, c->clustermac, ETH_ALEN, 0);
90 dev_put(c->dev); 111 dev_put(c->dev);
91 kfree(c); 112
113 /* In case anyone still accesses the file, the open/close
114 * functions are also incrementing the refcount on their own,
115 * so it's safe to remove the entry even if it's in use. */
116#ifdef CONFIG_PROC_FS
117 remove_proc_entry(c->pde->name, c->pde->parent);
118#endif
92 } 119 }
93} 120}
94 121
95
96static struct clusterip_config * 122static struct clusterip_config *
97__clusterip_config_find(u_int32_t clusterip) 123__clusterip_config_find(u_int32_t clusterip)
98{ 124{
@@ -111,7 +137,7 @@ __clusterip_config_find(u_int32_t clusterip)
111} 137}
112 138
113static inline struct clusterip_config * 139static inline struct clusterip_config *
114clusterip_config_find_get(u_int32_t clusterip) 140clusterip_config_find_get(u_int32_t clusterip, int entry)
115{ 141{
116 struct clusterip_config *c; 142 struct clusterip_config *c;
117 143
@@ -122,11 +148,24 @@ clusterip_config_find_get(u_int32_t clusterip)
122 return NULL; 148 return NULL;
123 } 149 }
124 atomic_inc(&c->refcount); 150 atomic_inc(&c->refcount);
151 if (entry)
152 atomic_inc(&c->entries);
125 read_unlock_bh(&clusterip_lock); 153 read_unlock_bh(&clusterip_lock);
126 154
127 return c; 155 return c;
128} 156}
129 157
158static void
159clusterip_config_init_nodelist(struct clusterip_config *c,
160 const struct ipt_clusterip_tgt_info *i)
161{
162 int n;
163
164 for (n = 0; n < i->num_local_nodes; n++) {
165 set_bit(i->local_nodes[n] - 1, &c->local_nodes);
166 }
167}
168
130static struct clusterip_config * 169static struct clusterip_config *
131clusterip_config_init(struct ipt_clusterip_tgt_info *i, u_int32_t ip, 170clusterip_config_init(struct ipt_clusterip_tgt_info *i, u_int32_t ip,
132 struct net_device *dev) 171 struct net_device *dev)
@@ -143,11 +182,11 @@ clusterip_config_init(struct ipt_clusterip_tgt_info *i, u_int32_t ip,
143 c->clusterip = ip; 182 c->clusterip = ip;
144 memcpy(&c->clustermac, &i->clustermac, ETH_ALEN); 183 memcpy(&c->clustermac, &i->clustermac, ETH_ALEN);
145 c->num_total_nodes = i->num_total_nodes; 184 c->num_total_nodes = i->num_total_nodes;
146 c->num_local_nodes = i->num_local_nodes; 185 clusterip_config_init_nodelist(c, i);
147 memcpy(&c->local_nodes, &i->local_nodes, sizeof(c->local_nodes));
148 c->hash_mode = i->hash_mode; 186 c->hash_mode = i->hash_mode;
149 c->hash_initval = i->hash_initval; 187 c->hash_initval = i->hash_initval;
150 atomic_set(&c->refcount, 1); 188 atomic_set(&c->refcount, 1);
189 atomic_set(&c->entries, 1);
151 190
152#ifdef CONFIG_PROC_FS 191#ifdef CONFIG_PROC_FS
153 /* create proc dir entry */ 192 /* create proc dir entry */
@@ -171,53 +210,28 @@ clusterip_config_init(struct ipt_clusterip_tgt_info *i, u_int32_t ip,
171static int 210static int
172clusterip_add_node(struct clusterip_config *c, u_int16_t nodenum) 211clusterip_add_node(struct clusterip_config *c, u_int16_t nodenum)
173{ 212{
174 int i;
175
176 write_lock_bh(&clusterip_lock);
177 213
178 if (c->num_local_nodes >= CLUSTERIP_MAX_NODES 214 if (nodenum == 0 ||
179 || nodenum > CLUSTERIP_MAX_NODES) { 215 nodenum > c->num_total_nodes)
180 write_unlock_bh(&clusterip_lock);
181 return 1; 216 return 1;
182 }
183
184 /* check if we alrady have this number in our array */
185 for (i = 0; i < c->num_local_nodes; i++) {
186 if (c->local_nodes[i] == nodenum) {
187 write_unlock_bh(&clusterip_lock);
188 return 1;
189 }
190 }
191 217
192 c->local_nodes[c->num_local_nodes++] = nodenum; 218 /* check if we already have this number in our bitfield */
219 if (test_and_set_bit(nodenum - 1, &c->local_nodes))
220 return 1;
193 221
194 write_unlock_bh(&clusterip_lock);
195 return 0; 222 return 0;
196} 223}
197 224
198static int 225static int
199clusterip_del_node(struct clusterip_config *c, u_int16_t nodenum) 226clusterip_del_node(struct clusterip_config *c, u_int16_t nodenum)
200{ 227{
201 int i; 228 if (nodenum == 0 ||
202 229 nodenum > c->num_total_nodes)
203 write_lock_bh(&clusterip_lock);
204
205 if (c->num_local_nodes <= 1 || nodenum > CLUSTERIP_MAX_NODES) {
206 write_unlock_bh(&clusterip_lock);
207 return 1; 230 return 1;
208 }
209 231
210 for (i = 0; i < c->num_local_nodes; i++) { 232 if (test_and_clear_bit(nodenum - 1, &c->local_nodes))
211 if (c->local_nodes[i] == nodenum) { 233 return 0;
212 int size = sizeof(u_int16_t)*(c->num_local_nodes-(i+1));
213 memmove(&c->local_nodes[i], &c->local_nodes[i+1], size);
214 c->num_local_nodes--;
215 write_unlock_bh(&clusterip_lock);
216 return 0;
217 }
218 }
219 234
220 write_unlock_bh(&clusterip_lock);
221 return 1; 235 return 1;
222} 236}
223 237
@@ -285,25 +299,7 @@ clusterip_hashfn(struct sk_buff *skb, struct clusterip_config *config)
285static inline int 299static inline int
286clusterip_responsible(struct clusterip_config *config, u_int32_t hash) 300clusterip_responsible(struct clusterip_config *config, u_int32_t hash)
287{ 301{
288 int i; 302 return test_bit(hash - 1, &config->local_nodes);
289
290 read_lock_bh(&clusterip_lock);
291
292 if (config->num_local_nodes == 0) {
293 read_unlock_bh(&clusterip_lock);
294 return 0;
295 }
296
297 for (i = 0; i < config->num_local_nodes; i++) {
298 if (config->local_nodes[i] == hash) {
299 read_unlock_bh(&clusterip_lock);
300 return 1;
301 }
302 }
303
304 read_unlock_bh(&clusterip_lock);
305
306 return 0;
307} 303}
308 304
309/*********************************************************************** 305/***********************************************************************
@@ -415,8 +411,26 @@ checkentry(const char *tablename,
415 411
416 /* FIXME: further sanity checks */ 412 /* FIXME: further sanity checks */
417 413
418 config = clusterip_config_find_get(e->ip.dst.s_addr); 414 config = clusterip_config_find_get(e->ip.dst.s_addr, 1);
419 if (!config) { 415 if (config) {
416 if (cipinfo->config != NULL) {
417 /* Case A: This is an entry that gets reloaded, since
418 * it still has a cipinfo->config pointer. Simply
419 * increase the entry refcount and return */
420 if (cipinfo->config != config) {
421 printk(KERN_ERR "CLUSTERIP: Reloaded entry "
422 "has invalid config pointer!\n");
423 return 0;
424 }
425 clusterip_config_entry_get(cipinfo->config);
426 } else {
427 /* Case B: This is a new rule referring to an existing
428 * clusterip config. */
429 cipinfo->config = config;
430 clusterip_config_entry_get(cipinfo->config);
431 }
432 } else {
433 /* Case C: This is a completely new clusterip config */
420 if (!(cipinfo->flags & CLUSTERIP_FLAG_NEW)) { 434 if (!(cipinfo->flags & CLUSTERIP_FLAG_NEW)) {
421 printk(KERN_WARNING "CLUSTERIP: no config found for %u.%u.%u.%u, need 'new'\n", NIPQUAD(e->ip.dst.s_addr)); 435 printk(KERN_WARNING "CLUSTERIP: no config found for %u.%u.%u.%u, need 'new'\n", NIPQUAD(e->ip.dst.s_addr));
422 return 0; 436 return 0;
@@ -443,10 +457,9 @@ checkentry(const char *tablename,
443 } 457 }
444 dev_mc_add(config->dev,config->clustermac, ETH_ALEN, 0); 458 dev_mc_add(config->dev,config->clustermac, ETH_ALEN, 0);
445 } 459 }
460 cipinfo->config = config;
446 } 461 }
447 462
448 cipinfo->config = config;
449
450 return 1; 463 return 1;
451} 464}
452 465
@@ -455,13 +468,10 @@ static void destroy(void *matchinfo, unsigned int matchinfosize)
455{ 468{
456 struct ipt_clusterip_tgt_info *cipinfo = matchinfo; 469 struct ipt_clusterip_tgt_info *cipinfo = matchinfo;
457 470
458 /* we first remove the proc entry and then drop the reference 471 /* if no more entries are referencing the config, remove it
459 * count. In case anyone still accesses the file, the open/close 472 * from the list and destroy the proc entry */
460 * functions are also incrementing the refcount on their own */ 473 clusterip_config_entry_put(cipinfo->config);
461#ifdef CONFIG_PROC_FS 474
462 remove_proc_entry(cipinfo->config->pde->name,
463 cipinfo->config->pde->parent);
464#endif
465 clusterip_config_put(cipinfo->config); 475 clusterip_config_put(cipinfo->config);
466} 476}
467 477
@@ -533,7 +543,7 @@ arp_mangle(unsigned int hook,
533 543
534 /* if there is no clusterip configuration for the arp reply's 544 /* if there is no clusterip configuration for the arp reply's
535 * source ip, we don't want to mangle it */ 545 * source ip, we don't want to mangle it */
536 c = clusterip_config_find_get(payload->src_ip); 546 c = clusterip_config_find_get(payload->src_ip, 0);
537 if (!c) 547 if (!c)
538 return NF_ACCEPT; 548 return NF_ACCEPT;
539 549
@@ -574,56 +584,69 @@ static struct nf_hook_ops cip_arp_ops = {
574 584
575#ifdef CONFIG_PROC_FS 585#ifdef CONFIG_PROC_FS
576 586
587struct clusterip_seq_position {
588 unsigned int pos; /* position */
589 unsigned int weight; /* number of bits set == size */
590 unsigned int bit; /* current bit */
591 unsigned long val; /* current value */
592};
593
577static void *clusterip_seq_start(struct seq_file *s, loff_t *pos) 594static void *clusterip_seq_start(struct seq_file *s, loff_t *pos)
578{ 595{
579 struct proc_dir_entry *pde = s->private; 596 struct proc_dir_entry *pde = s->private;
580 struct clusterip_config *c = pde->data; 597 struct clusterip_config *c = pde->data;
581 unsigned int *nodeidx; 598 unsigned int weight;
582 599 u_int32_t local_nodes;
583 read_lock_bh(&clusterip_lock); 600 struct clusterip_seq_position *idx;
584 if (*pos >= c->num_local_nodes) 601
602 /* FIXME: possible race */
603 local_nodes = c->local_nodes;
604 weight = hweight32(local_nodes);
605 if (*pos >= weight)
585 return NULL; 606 return NULL;
586 607
587 nodeidx = kmalloc(sizeof(unsigned int), GFP_KERNEL); 608 idx = kmalloc(sizeof(struct clusterip_seq_position), GFP_KERNEL);
588 if (!nodeidx) 609 if (!idx)
589 return ERR_PTR(-ENOMEM); 610 return ERR_PTR(-ENOMEM);
590 611
591 *nodeidx = *pos; 612 idx->pos = *pos;
592 return nodeidx; 613 idx->weight = weight;
614 idx->bit = ffs(local_nodes);
615 idx->val = local_nodes;
616 clear_bit(idx->bit - 1, &idx->val);
617
618 return idx;
593} 619}
594 620
595static void *clusterip_seq_next(struct seq_file *s, void *v, loff_t *pos) 621static void *clusterip_seq_next(struct seq_file *s, void *v, loff_t *pos)
596{ 622{
597 struct proc_dir_entry *pde = s->private; 623 struct clusterip_seq_position *idx = (struct clusterip_seq_position *)v;
598 struct clusterip_config *c = pde->data;
599 unsigned int *nodeidx = (unsigned int *)v;
600 624
601 *pos = ++(*nodeidx); 625 *pos = ++idx->pos;
602 if (*pos >= c->num_local_nodes) { 626 if (*pos >= idx->weight) {
603 kfree(v); 627 kfree(v);
604 return NULL; 628 return NULL;
605 } 629 }
606 return nodeidx; 630 idx->bit = ffs(idx->val);
631 clear_bit(idx->bit - 1, &idx->val);
632 return idx;
607} 633}
608 634
609static void clusterip_seq_stop(struct seq_file *s, void *v) 635static void clusterip_seq_stop(struct seq_file *s, void *v)
610{ 636{
611 kfree(v); 637 kfree(v);
612
613 read_unlock_bh(&clusterip_lock);
614} 638}
615 639
616static int clusterip_seq_show(struct seq_file *s, void *v) 640static int clusterip_seq_show(struct seq_file *s, void *v)
617{ 641{
618 struct proc_dir_entry *pde = s->private; 642 struct clusterip_seq_position *idx = (struct clusterip_seq_position *)v;
619 struct clusterip_config *c = pde->data;
620 unsigned int *nodeidx = (unsigned int *)v;
621 643
622 if (*nodeidx != 0) 644 if (idx->pos != 0)
623 seq_putc(s, ','); 645 seq_putc(s, ',');
624 seq_printf(s, "%u", c->local_nodes[*nodeidx]);
625 646
626 if (*nodeidx == c->num_local_nodes-1) 647 seq_printf(s, "%u", idx->bit);
648
649 if (idx->pos == idx->weight - 1)
627 seq_putc(s, '\n'); 650 seq_putc(s, '\n');
628 651
629 return 0; 652 return 0;
diff --git a/net/ipv4/netfilter/ipt_MASQUERADE.c b/net/ipv4/netfilter/ipt_MASQUERADE.c
index 2f3e181c8e97..275a174c6fe6 100644
--- a/net/ipv4/netfilter/ipt_MASQUERADE.c
+++ b/net/ipv4/netfilter/ipt_MASQUERADE.c
@@ -90,6 +90,12 @@ masquerade_target(struct sk_buff **pskb,
90 IP_NF_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED 90 IP_NF_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED
91 || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY)); 91 || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY));
92 92
93 /* Source address is 0.0.0.0 - locally generated packet that is
94 * probably not supposed to be masqueraded.
95 */
96 if (ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip == 0)
97 return NF_ACCEPT;
98
93 mr = targinfo; 99 mr = targinfo;
94 rt = (struct rtable *)(*pskb)->dst; 100 rt = (struct rtable *)(*pskb)->dst;
95 newsrc = inet_select_addr(out, rt->rt_gateway, RT_SCOPE_UNIVERSE); 101 newsrc = inet_select_addr(out, rt->rt_gateway, RT_SCOPE_UNIVERSE);
diff --git a/net/ipv4/netfilter/ipt_REDIRECT.c b/net/ipv4/netfilter/ipt_REDIRECT.c
index d2e13447678e..5245bfd33d52 100644
--- a/net/ipv4/netfilter/ipt_REDIRECT.c
+++ b/net/ipv4/netfilter/ipt_REDIRECT.c
@@ -88,14 +88,18 @@ redirect_target(struct sk_buff **pskb,
88 newdst = htonl(0x7F000001); 88 newdst = htonl(0x7F000001);
89 else { 89 else {
90 struct in_device *indev; 90 struct in_device *indev;
91 struct in_ifaddr *ifa;
91 92
92 /* Device might not have an associated in_device. */ 93 newdst = 0;
93 indev = (struct in_device *)(*pskb)->dev->ip_ptr; 94
94 if (indev == NULL || indev->ifa_list == NULL) 95 rcu_read_lock();
95 return NF_DROP; 96 indev = __in_dev_get_rcu((*pskb)->dev);
97 if (indev && (ifa = indev->ifa_list))
98 newdst = ifa->ifa_local;
99 rcu_read_unlock();
96 100
97 /* Grab first address on interface. */ 101 if (!newdst)
98 newdst = indev->ifa_list->ifa_local; 102 return NF_DROP;
99 } 103 }
100 104
101 /* Transfer from original range. */ 105 /* Transfer from original range. */
diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c
index e2c14f3cb2fc..2883ccd8a91d 100644
--- a/net/ipv4/netfilter/ipt_ULOG.c
+++ b/net/ipv4/netfilter/ipt_ULOG.c
@@ -225,8 +225,8 @@ static void ipt_ulog_packet(unsigned int hooknum,
225 225
226 /* copy hook, prefix, timestamp, payload, etc. */ 226 /* copy hook, prefix, timestamp, payload, etc. */
227 pm->data_len = copy_len; 227 pm->data_len = copy_len;
228 pm->timestamp_sec = skb_tv_base.tv_sec + skb->tstamp.off_sec; 228 pm->timestamp_sec = skb->tstamp.off_sec;
229 pm->timestamp_usec = skb_tv_base.tv_usec + skb->tstamp.off_usec; 229 pm->timestamp_usec = skb->tstamp.off_usec;
230 pm->mark = skb->nfmark; 230 pm->mark = skb->nfmark;
231 pm->hook = hooknum; 231 pm->hook = hooknum;
232 if (prefix != NULL) 232 if (prefix != NULL)
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 304bb0a1d4f0..4b0d7e4d6269 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -361,7 +361,7 @@ static void raw_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
361 361
362 if (type && code) { 362 if (type && code) {
363 get_user(fl->fl_icmp_type, type); 363 get_user(fl->fl_icmp_type, type);
364 __get_user(fl->fl_icmp_code, code); 364 get_user(fl->fl_icmp_code, code);
365 probed = 1; 365 probed = 1;
366 } 366 }
367 break; 367 break;
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 8549f26e2495..381dd6a6aebb 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2128,7 +2128,7 @@ int ip_route_input(struct sk_buff *skb, u32 daddr, u32 saddr,
2128 struct in_device *in_dev; 2128 struct in_device *in_dev;
2129 2129
2130 rcu_read_lock(); 2130 rcu_read_lock();
2131 if ((in_dev = __in_dev_get(dev)) != NULL) { 2131 if ((in_dev = __in_dev_get_rcu(dev)) != NULL) {
2132 int our = ip_check_mc(in_dev, daddr, saddr, 2132 int our = ip_check_mc(in_dev, daddr, saddr,
2133 skb->nh.iph->protocol); 2133 skb->nh.iph->protocol);
2134 if (our 2134 if (our
@@ -2443,7 +2443,9 @@ static int ip_route_output_slow(struct rtable **rp, const struct flowi *oldflp)
2443 err = -ENODEV; 2443 err = -ENODEV;
2444 if (dev_out == NULL) 2444 if (dev_out == NULL)
2445 goto out; 2445 goto out;
2446 if (__in_dev_get(dev_out) == NULL) { 2446
2447 /* RACE: Check return value of inet_select_addr instead. */
2448 if (__in_dev_get_rtnl(dev_out) == NULL) {
2447 dev_put(dev_out); 2449 dev_put(dev_out);
2448 goto out; /* Wrong error code */ 2450 goto out; /* Wrong error code */
2449 } 2451 }
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 29222b964951..677419d0c9ad 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -355,8 +355,6 @@ static void tcp_clamp_window(struct sock *sk, struct tcp_sock *tp)
355 app_win -= icsk->icsk_ack.rcv_mss; 355 app_win -= icsk->icsk_ack.rcv_mss;
356 app_win = max(app_win, 2U*tp->advmss); 356 app_win = max(app_win, 2U*tp->advmss);
357 357
358 if (!ofo_win)
359 tp->window_clamp = min(tp->window_clamp, app_win);
360 tp->rcv_ssthresh = min(tp->window_clamp, 2U*tp->advmss); 358 tp->rcv_ssthresh = min(tp->window_clamp, 2U*tp->advmss);
361 } 359 }
362} 360}
@@ -979,14 +977,19 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_
979 if (!before(TCP_SKB_CB(skb)->seq, end_seq)) 977 if (!before(TCP_SKB_CB(skb)->seq, end_seq))
980 break; 978 break;
981 979
980 in_sack = !after(start_seq, TCP_SKB_CB(skb)->seq) &&
981 !before(end_seq, TCP_SKB_CB(skb)->end_seq);
982
982 pcount = tcp_skb_pcount(skb); 983 pcount = tcp_skb_pcount(skb);
983 984
984 if (pcount > 1 && 985 if (pcount > 1 && !in_sack &&
985 (after(start_seq, TCP_SKB_CB(skb)->seq) || 986 after(TCP_SKB_CB(skb)->end_seq, start_seq)) {
986 before(end_seq, TCP_SKB_CB(skb)->end_seq))) {
987 unsigned int pkt_len; 987 unsigned int pkt_len;
988 988
989 if (after(start_seq, TCP_SKB_CB(skb)->seq)) 989 in_sack = !after(start_seq,
990 TCP_SKB_CB(skb)->seq);
991
992 if (!in_sack)
990 pkt_len = (start_seq - 993 pkt_len = (start_seq -
991 TCP_SKB_CB(skb)->seq); 994 TCP_SKB_CB(skb)->seq);
992 else 995 else
@@ -999,9 +1002,6 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_
999 1002
1000 fack_count += pcount; 1003 fack_count += pcount;
1001 1004
1002 in_sack = !after(start_seq, TCP_SKB_CB(skb)->seq) &&
1003 !before(end_seq, TCP_SKB_CB(skb)->end_seq);
1004
1005 sacked = TCP_SKB_CB(skb)->sacked; 1005 sacked = TCP_SKB_CB(skb)->sacked;
1006 1006
1007 /* Account D-SACK for retransmitted packet. */ 1007 /* Account D-SACK for retransmitted packet. */
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 13dfb391cdf1..c85819d8474b 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -130,19 +130,20 @@ static int __tcp_v4_check_established(struct sock *sk, __u16 lport,
130 int dif = sk->sk_bound_dev_if; 130 int dif = sk->sk_bound_dev_if;
131 INET_ADDR_COOKIE(acookie, saddr, daddr) 131 INET_ADDR_COOKIE(acookie, saddr, daddr)
132 const __u32 ports = INET_COMBINED_PORTS(inet->dport, lport); 132 const __u32 ports = INET_COMBINED_PORTS(inet->dport, lport);
133 const int hash = inet_ehashfn(daddr, lport, saddr, inet->dport, tcp_hashinfo.ehash_size); 133 unsigned int hash = inet_ehashfn(daddr, lport, saddr, inet->dport);
134 struct inet_ehash_bucket *head = &tcp_hashinfo.ehash[hash]; 134 struct inet_ehash_bucket *head = inet_ehash_bucket(&tcp_hashinfo, hash);
135 struct sock *sk2; 135 struct sock *sk2;
136 const struct hlist_node *node; 136 const struct hlist_node *node;
137 struct inet_timewait_sock *tw; 137 struct inet_timewait_sock *tw;
138 138
139 prefetch(head->chain.first);
139 write_lock(&head->lock); 140 write_lock(&head->lock);
140 141
141 /* Check TIME-WAIT sockets first. */ 142 /* Check TIME-WAIT sockets first. */
142 sk_for_each(sk2, node, &(head + tcp_hashinfo.ehash_size)->chain) { 143 sk_for_each(sk2, node, &(head + tcp_hashinfo.ehash_size)->chain) {
143 tw = inet_twsk(sk2); 144 tw = inet_twsk(sk2);
144 145
145 if (INET_TW_MATCH(sk2, acookie, saddr, daddr, ports, dif)) { 146 if (INET_TW_MATCH(sk2, hash, acookie, saddr, daddr, ports, dif)) {
146 const struct tcp_timewait_sock *tcptw = tcp_twsk(sk2); 147 const struct tcp_timewait_sock *tcptw = tcp_twsk(sk2);
147 struct tcp_sock *tp = tcp_sk(sk); 148 struct tcp_sock *tp = tcp_sk(sk);
148 149
@@ -179,7 +180,7 @@ static int __tcp_v4_check_established(struct sock *sk, __u16 lport,
179 180
180 /* And established part... */ 181 /* And established part... */
181 sk_for_each(sk2, node, &head->chain) { 182 sk_for_each(sk2, node, &head->chain) {
182 if (INET_MATCH(sk2, acookie, saddr, daddr, ports, dif)) 183 if (INET_MATCH(sk2, hash, acookie, saddr, daddr, ports, dif))
183 goto not_unique; 184 goto not_unique;
184 } 185 }
185 186
@@ -188,7 +189,7 @@ unique:
188 * in hash table socket with a funny identity. */ 189 * in hash table socket with a funny identity. */
189 inet->num = lport; 190 inet->num = lport;
190 inet->sport = htons(lport); 191 inet->sport = htons(lport);
191 sk->sk_hashent = hash; 192 sk->sk_hash = hash;
192 BUG_TRAP(sk_unhashed(sk)); 193 BUG_TRAP(sk_unhashed(sk));
193 __sk_add_node(sk, &head->chain); 194 __sk_add_node(sk, &head->chain);
194 sock_prot_inc_use(sk->sk_prot); 195 sock_prot_inc_use(sk->sk_prot);
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index a88db28b0af7..b1a63b2c6b4a 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -384,7 +384,7 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req,
384 newtp->frto_counter = 0; 384 newtp->frto_counter = 0;
385 newtp->frto_highmark = 0; 385 newtp->frto_highmark = 0;
386 386
387 newicsk->icsk_ca_ops = &tcp_reno; 387 newicsk->icsk_ca_ops = &tcp_init_congestion_ops;
388 388
389 tcp_set_ca_state(newsk, TCP_CA_Open); 389 tcp_set_ca_state(newsk, TCP_CA_Open);
390 tcp_init_xmit_timers(newsk); 390 tcp_init_xmit_timers(newsk);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index c10e4435e3b1..c5b911f9b662 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -190,7 +190,7 @@ void tcp_select_initial_window(int __space, __u32 mss,
190 } 190 }
191 191
192 /* Set initial window to value enough for senders, 192 /* Set initial window to value enough for senders,
193 * following RFC1414. Senders, not following this RFC, 193 * following RFC2414. Senders, not following this RFC,
194 * will be satisfied with 2. 194 * will be satisfied with 2.
195 */ 195 */
196 if (mss > (1<<*rcv_wscale)) { 196 if (mss > (1<<*rcv_wscale)) {
@@ -435,6 +435,8 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss
435 int nsize, old_factor; 435 int nsize, old_factor;
436 u16 flags; 436 u16 flags;
437 437
438 BUG_ON(len >= skb->len);
439
438 nsize = skb_headlen(skb) - len; 440 nsize = skb_headlen(skb) - len;
439 if (nsize < 0) 441 if (nsize < 0)
440 nsize = 0; 442 nsize = 0;
@@ -459,9 +461,7 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss
459 flags = TCP_SKB_CB(skb)->flags; 461 flags = TCP_SKB_CB(skb)->flags;
460 TCP_SKB_CB(skb)->flags = flags & ~(TCPCB_FLAG_FIN|TCPCB_FLAG_PSH); 462 TCP_SKB_CB(skb)->flags = flags & ~(TCPCB_FLAG_FIN|TCPCB_FLAG_PSH);
461 TCP_SKB_CB(buff)->flags = flags; 463 TCP_SKB_CB(buff)->flags = flags;
462 TCP_SKB_CB(buff)->sacked = 464 TCP_SKB_CB(buff)->sacked = TCP_SKB_CB(skb)->sacked;
463 (TCP_SKB_CB(skb)->sacked &
464 (TCPCB_LOST | TCPCB_EVER_RETRANS | TCPCB_AT_TAIL));
465 TCP_SKB_CB(skb)->sacked &= ~TCPCB_AT_TAIL; 465 TCP_SKB_CB(skb)->sacked &= ~TCPCB_AT_TAIL;
466 466
467 if (!skb_shinfo(skb)->nr_frags && skb->ip_summed != CHECKSUM_HW) { 467 if (!skb_shinfo(skb)->nr_frags && skb->ip_summed != CHECKSUM_HW) {
@@ -499,11 +499,26 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss
499 tcp_skb_pcount(buff); 499 tcp_skb_pcount(buff);
500 500
501 tp->packets_out -= diff; 501 tp->packets_out -= diff;
502
503 if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED)
504 tp->sacked_out -= diff;
505 if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_RETRANS)
506 tp->retrans_out -= diff;
507
502 if (TCP_SKB_CB(skb)->sacked & TCPCB_LOST) { 508 if (TCP_SKB_CB(skb)->sacked & TCPCB_LOST) {
503 tp->lost_out -= diff; 509 tp->lost_out -= diff;
504 tp->left_out -= diff; 510 tp->left_out -= diff;
505 } 511 }
512
506 if (diff > 0) { 513 if (diff > 0) {
514 /* Adjust Reno SACK estimate. */
515 if (!tp->rx_opt.sack_ok) {
516 tp->sacked_out -= diff;
517 if ((int)tp->sacked_out < 0)
518 tp->sacked_out = 0;
519 tcp_sync_left_out(tp);
520 }
521
507 tp->fackets_out -= diff; 522 tp->fackets_out -= diff;
508 if ((int)tp->fackets_out < 0) 523 if ((int)tp->fackets_out < 0)
509 tp->fackets_out = 0; 524 tp->fackets_out = 0;
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-06 19:12:23 -0400