- 14 Feb, 2011 3 commits
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Jan Engelhardt authored
nfct happens to run after the raw table only. Signed-off-by:
Jan Engelhardt <jengelh@medozas.de> Signed-off-by:
Patrick McHardy <kaber@trash.net>
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Stefan Berger authored
This reverts commit 44bd4de9. I have to revert the early loop termination in connlimit since it generates problems when an iptables statement does not use -m state --state NEW before the connlimit match extension. Signed-off-by:
Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by:
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Vasiliy Kulikov authored
Struct tmp is copied from userspace. It is not checked whether the "name" field is NULL terminated. This may lead to buffer overflow and passing contents of kernel stack as a module name to try_then_request_module() and, consequently, to modprobe commandline. It would be seen by all userspace processes. Signed-off-by:
Vasiliy Kulikov <segoon@openwall.com> Signed-off-by:
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- 11 Feb, 2011 1 commit
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Stefan Berger authored
The patch below introduces an early termination of the loop that is counting matches. It terminates once the counter has exceeded the threshold provided by the user. There's no point in continuing the loop afterwards and looking at other entries. It plays together with the following code further below: return (connections > info->limit) ^ info->inverse; where connections is the result of the counted connection, which in turn is the matches variable in the loop. So once -> matches = info->limit + 1 alias -> matches > info->limit alias -> matches > threshold we can terminate the loop. Signed-off-by:
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- 10 Feb, 2011 1 commit
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Patrick McHardy authored
When SYSCTL and PROC_FS and NETFILTER_NETLINK are not enabled: net/built-in.o: In function `try_to_load_type': ip_set_core.c:(.text+0x3ab49): undefined reference to `nfnl_unlock' ip_set_core.c:(.text+0x3ab4e): undefined reference to `nfnl_lock' ... Reported-by:
Randy Dunlap <randy.dunlap@oracle.com> Acked-by:
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- 07 Feb, 2011 1 commit
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Dan Carpenter authored
'!' has higher precedence than '&'. IP_VS_STATE_MASTER is 0x1 so the original code is equivelent to if (!ipvs->sync_state) ... Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Hans Schillstrom <hans.schillstrom@ericsson.com> Signed-off-by:
Simon Horman <horms@verge.net.au>
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- 03 Feb, 2011 1 commit
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Simon Horman authored
Use sctp_app_lock instead of tcp_app_lock in the SCTP protocol module. This appears to be a typo introduced by the netns changes. Signed-off-by:
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- 02 Feb, 2011 4 commits
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Patrick McHardy authored
Add a new 'devgroup' match to match on the device group of the incoming and outgoing network device of a packet. Signed-off-by: -
Jozsef Kadlecsik authored
When a message carries multiple commands and one of them triggers an error, we have to report to the userspace which one was that. The line number of the command plays this role and there's an attribute reserved in the header part of the message to be filled out with the error line number. In order not to modify the original message received from the userspace, we construct a new, complete netlink error message and modifies the attribute there, then send it. Netlink is notified not to send its ACK/error message. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu Signed-off-by: -
Patrick McHardy authored
Add a dummy ip_set_get_ip6_port function that unconditionally returns false for CONFIG_IPV6=n and convert the real function to ipv6_skip_exthdr() to avoid pulling in the ip6_tables module when loading ipset. Signed-off-by: -
Patrick McHardy authored
Don't fall through in the switch statement, otherwise IPv4 headers are incorrectly parsed again as IPv6 and the return value will always be 'false'. Signed-off-by:
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- 01 Feb, 2011 22 commits
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Patrick McHardy authored
Signed-off-by: -
Simon Horman authored
ip_vs_sync_cleanup() may be called from ip_vs_init() on error and thus needs to be accesible from section __init Reporte-by:
Hans Schillstrom <hans@schillstrom.com> Tested-by:
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Simon Horman authored
This is a rather naieve approach to allowing PVS to compile with CONFIG_SYSCTL disabled. I am working on a more comprehensive patch which will remove compilation of all sysctl-related IPVS code when CONFIG_SYSCTL is disabled. Reported-by:
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Simon Horman authored
These variables are unused as a result of the recent netns work. Signed-off-by:
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Simon Horman authored
Signed-off-by:
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Simon Horman authored
Reported-by:
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Patrick McHardy authored
net/netfilter/nf_conntrack_netlink.c: In function 'ctnetlink_parse_tuple': net/netfilter/nf_conntrack_netlink.c:832:11: warning: comparison between 'enum ctattr_tuple' and 'enum ctattr_type' Use ctattr_type for the 'type' parameter since that's the type of all attributes passed to this function. Signed-off-by: -
Patrick McHardy authored
None of the set types need uaccess.h since this is handled centrally in ip_set_core. Most set types additionally don't need bitops.h and spinlock.h since they use neither. tcp.h is only needed by those using before(), udp.h is not needed at all. Signed-off-by: -
Patrick McHardy authored
Replace calls of the form: nla_parse(tb, ATTR_MAX, nla_data(attr), nla_len(attr), policy) by: nla_parse_nested(tb, ATTR_MAX, attr, policy) Signed-off-by: -
Jozsef Kadlecsik authored
The patch adds the combined module of the "SET" target and "set" match to netfilter. Both the previous and the current revisions are supported. Signed-off-by:
Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by:
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Jozsef Kadlecsik authored
The module implements the list:set type support in two flavours: without and with timeout. The sets has two sides: for the userspace, they store the names of other (non list:set type of) sets: one can add, delete and test set names. For the kernel, it forms an ordered union of the member sets: the members sets are tried in order when elements are added, deleted and tested and the process stops at the first success. Signed-off-by:
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Jozsef Kadlecsik authored
The module implements the hash:net,port type support in four flavours: for IPv4 and IPv6, both without and with timeout support. The elements are two dimensional: IPv4/IPv6 network address/prefix and protocol/port pairs. Signed-off-by:
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Jozsef Kadlecsik authored
The module implements the hash:net type support in four flavours: for IPv4 and IPv6, both without and with timeout support. The elements are one dimensional: IPv4/IPv6 network address/prefixes. Signed-off-by:
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Jozsef Kadlecsik authored
The module implements the hash:ip,port,net type support in four flavours: for IPv4 and IPv6, both without and with timeout support. The elements are three dimensional: IPv4/IPv6 address, protocol/port and IPv4/IPv6 network address/prefix triples. The different prefixes are searched/matched from the longest prefix to the shortes one (most specific to least). In other words the processing time linearly grows with the number of different prefixes in the set. Signed-off-by:
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Jozsef Kadlecsik authored
The module implements the hash:ip,port,ip type support in four flavours: for IPv4 and IPv6, both without and with timeout support. The elements are three dimensional: IPv4/IPv6 address, protocol/port and IPv4/IPv6 address triples. Signed-off-by:
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Jozsef Kadlecsik authored
The module implements the hash:ip,port type support in four flavours: for IPv4 and IPv6, both without and with timeout support. The elements are two dimensional: IPv4/IPv6 address and protocol/port pairs. The port is interpeted for TCP, UPD, ICMP and ICMPv6 (at the latters as type/code of course). Signed-off-by:
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Jozsef Kadlecsik authored
The module implements the hash:ip type support in four flavours: for IPv4 or IPv6, both without and with timeout support. All the hash types are based on the "array hash" or ahash structure and functions as a good compromise between minimal memory footprint and speed. The hashing uses arrays to resolve clashes. The hash table is resized (doubled) when searching becomes too long. Resizing can be triggered by userspace add commands only and those are serialized by the nfnl mutex. During resizing the set is read-locked, so the only possible concurrent operations are the kernel side readers. Those are protected by RCU locking. Because of the four flavours and the other hash types, the functions are implemented in general forms in the ip_set_ahash.h header file and the real functions are generated before compiling by macro expansion. Thus the dereferencing of low-level functions and void pointer arguments could be avoided: the low-level functions are inlined, the function arguments are pointers of type-specific structures. Signed-off-by:
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Jozsef Kadlecsik authored
The module implements the bitmap:port type in two flavours, without and with timeout support to store TCP/UDP ports from a range. Signed-off-by:
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Jozsef Kadlecsik authored
The module implements the bitmap:ip,mac set type in two flavours, without and with timeout support. In this kind of set one can store IPv4 address and (source) MAC address pairs. The type supports elements added without the MAC part filled out: when the first matching from kernel happens, the MAC part is automatically filled out. The timing out of the elements stars when an element is complete in the IP,MAC pair. Signed-off-by:
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Jozsef Kadlecsik authored
The module implements the bitmap:ip set type in two flavours, without and with timeout support. In this kind of set one can store IPv4 addresses (or network addresses) from a given range. In order not to waste memory, the timeout version does not rely on the kernel timer for every element to be timed out but on garbage collection. All set types use this mechanism. Signed-off-by:
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Jozsef Kadlecsik authored
The patch adds the IP set core support to the kernel. The IP set core implements a netlink (nfnetlink) based protocol by which one can create, destroy, flush, rename, swap, list, save, restore sets, and add, delete, test elements from userspace. For simplicity (and backward compatibilty and for not to force ip(6)tables to be linked with a netlink library) reasons a small getsockopt-based protocol is also kept in order to communicate with the ip(6)tables match and target. The netlink protocol passes all u16, etc values in network order with NLA_F_NET_BYTEORDER flag. The protocol enforces the proper use of the NLA_F_NESTED and NLA_F_NET_BYTEORDER flags. For other kernel subsystems (netfilter match and target) the API contains the functions to add, delete and test elements in sets and the required calls to get/put refereces to the sets before those operations can be performed. The set types (which are implemented in independent modules) are stored in a simple RCU protected list. A set type may have variants: for example without timeout or with timeout support, for IPv4 or for IPv6. The sets (i.e. the pointers to the sets) are stored in an array. The sets are identified by their index in the array, which makes possible easy and fast swapping of sets. The array is protected indirectly by the nfnl mutex from nfnetlink. The content of the sets are protected by the rwlock of the set. There are functional differences between the add/del/test functions for the kernel and userspace: - kernel add/del/test: works on the current packet (i.e. one element) - kernel test: may trigger an "add" operation in order to fill out unspecified parts of the element from the packet (like MAC address) - userspace add/del: works on the netlink message and thus possibly on multiple elements from the IPSET_ATTR_ADT container attribute. - userspace add: may trigger resizing of a set Signed-off-by:
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Jozsef Kadlecsik authored
The patch adds the NFNL_SUBSYS_IPSET id and NLA_PUT_NET* macros to the vanilla kernel. Signed-off-by:
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- 28 Jan, 2011 1 commit
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Thomas Jacob authored
Signed-off-by:
Thomas Jacob <jacob@internet24.de> Signed-off-by:
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- 27 Jan, 2011 1 commit
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Thomas Jacob authored
Signed-off-by:
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- 26 Jan, 2011 2 commits
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Jan Engelhardt authored
xt_connlimit normally records the "original" tuples in a hashlist (such as "1.2.3.4 -> 5.6.7.8"), and looks in this list for iph->daddr when counting. When the user however uses DNAT in PREROUTING, looking for iph->daddr -- which is now 192.168.9.10 -- will not match. Thus in daddr mode, we need to record the reverse direction tuple ("192.168.9.10 -> 1.2.3.4") instead. In the reverse tuple, the dst addr is on the src side, which is convenient, as count_them still uses &conn->tuple.src.u3. Signed-off-by:
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- 25 Jan, 2011 2 commits
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Changli Gao authored
Fix compiler warnings when IP_VS_DBG() isn't defined. Signed-off-by:
Changli Gao <xiaosuo@gmail.com> Acked-by:
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Hans Schillstrom authored
The newly created table was not used when register sysctl for a new namespace. I.e. sysctl doesn't work for other than root namespace (init_net) Signed-off-by:
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- 22 Jan, 2011 1 commit
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Simon Horman authored
The recent netns changes omitted to change sock_create_kernel() to __sock_create() in ip_vs_sync.c The effect of this is that the interface will be selected in the root-namespace, from my point of view it's a major bug. Reported-by:
Julian Anastasov <ja@ssi.bg> Signed-off-by:
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