Commit Graph

21010 Commits

Author SHA1 Message Date
Pavel Emelyanov
a9fde26078 [VLAN]: Tag vlan_group_device with net device, not ifindex.
Currently vlan group is searched using one key - the ifindex.
We'll have to lookup the vlan_group by two keys - ifindex and
net. Turning the vlan_group lookup key to struct net_device
pointer will make this process easier.

Besides, this will eliminate one more place in the networking,
that assumes that indexes are unique in the kernel.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-16 00:48:04 -07:00
Pavel Emelyanov
669f87baab [RTNL]: Introduce the rtnl_kill_links helper.
This one is responsible for calling ->dellink on each net
device found in net to help with vlan net_exit hook in the
nearest future.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-16 00:46:52 -07:00
Pavel Emelyanov
dec827d174 [NETNS]: The generic per-net pointers.
Add the elastic array of void * pointer to the struct net.
The access rules are simple:

 1. register the ops with register_pernet_gen_device to get
    the id of your private pointer
 2. call net_assign_generic() to put the private data on the
    struct net (most preferably this should be done in the
    ->init callback of the ops registered)
 3. do not store any private reference on the net_generic array;
 4. do not change this pointer while the net is alive;
 5. use the net_generic() to get the pointer.

When adding a new pointer, I copy the old array, replace it
with a new one and schedule the old for kfree after an RCU
grace period.

Since the net_generic explores the net->gen array inside rcu
read section and once set the net->gen->ptr[x] pointer never 
changes, this grants us a safe access to generic pointers.

Quoting Paul: "... RCU is protecting -only- the net_generic 
structure that net_generic() is traversing, and the [pointer]
returned by net_generic() is protected by a reference counter 
in the upper-level struct net."

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15 00:36:08 -07:00
Pavel Emelyanov
c93cf61fd1 [NETNS]: The net-subsys IDs generator.
To make some per-net generic pointers, we need some way to address
them, i.e. - IDs. This is simple IDA-based IDs generator for pernet
subsystems.

Addressing questions about potential checkpoint/restart problems: 
these IDs are "lite-offsets" within the net structure and are by no 
means supposed to be exported to the userspace.

Since it will be used in the nearest future by devices only (tun,
vlan, tunnels, bridge, etc), I make it resemble the functionality
of register_pernet_device().

The new ids is stored in the *id pointer _before_ calling the init
callback to make this id available in this callback.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15 00:35:23 -07:00
Adrian Bunk
31efdf0530 [ISDN] include/linux/isdn.h: remove dead code
This patch remove the usage of a nonexisting kconfig variable.

Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15 00:30:16 -07:00
Adrian Bunk
7ef3abd210 [IRDA]: Remove irlan_eth_send_gratuitous_arp()
Even kernel 2.2.26 (sic) already contains the
  #undef CONFIG_IRLAN_SEND_GRATUITOUS_ARP
with the comment "but for some reason the machine crashes if you use DHCP".

Either someone finally looks into this or it's simply time to remove 
this dead code.

Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15 00:29:24 -07:00
Adrian Bunk
99971e70fd [WANPIPE]: Forgotten bits of Sangoma drivers removal.
Robert P. J. Day spotted that my removal of the Sangoma drivers missed
a few bits.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15 00:27:58 -07:00
Allan Stephens
0c3141e910 [TIPC]: Overhaul of socket locking logic
This patch modifies TIPC's socket code to follow the same approach
used by other protocols.  This change eliminates the need for a
mutex in the TIPC-specific portion of the socket protocol data
structure -- in its place, the standard Linux socket backlog queue
and associated locking routines are utilized.  These changes fix
a long-standing receive queue bug on SMP systems, and also enable
individual read and write threads to utilize a socket without
unnecessarily interfering with each other.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15 00:22:02 -07:00
David S. Miller
334f8b2afd Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6.26 2008-04-14 03:50:43 -07:00
David S. Miller
df39e8ba56 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/ehea/ehea_main.c
	drivers/net/wireless/iwlwifi/Kconfig
	drivers/net/wireless/rt2x00/rt61pci.c
	net/ipv4/inet_timewait_sock.c
	net/ipv6/raw.c
	net/mac80211/ieee80211_sta.c
2008-04-14 02:30:23 -07:00
Peter Warasin
e7bfd0a1a6 [NETFILTER]: bridge: add ebt_nflog watcher
This patch adds the ebtables nflog watcher to the kernel in order to
allow ebtables log through the nfnetlink_log backend.

Signed-off-by: Peter Warasin <peter@endian.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:54 +02:00
Jan Engelhardt
3c9fba656a [NETFILTER]: nf_conntrack: replace NF_CT_DUMP_TUPLE macro indrection by function call
Directly call IPv4 and IPv6 variants where the address family is
easily known.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:54 +02:00
Jan Engelhardt
f2ea825f48 [NETFILTER]: nf_nat: use bool type in nf_nat_proto
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:53 +02:00
Jan Engelhardt
5f2b4c9006 [NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_tuple.h
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:53 +02:00
Jan Engelhardt
09f263cd39 [NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_l4proto
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:53 +02:00
Jan Engelhardt
8ce8439a31 [NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_l3proto
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:52 +02:00
Jan Engelhardt
9dbae79178 [NETFILTER]: Remove unused callbacks in nf_conntrack_l3proto
These functions are never called.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:52 +02:00
Patrick McHardy
5e8fbe2ac8 [NETFILTER]: nf_conntrack: add tuplehash l3num/protonum accessors
Add accessors for l3num and protonum and get rid of some overly long
expressions.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:52 +02:00
Patrick McHardy
dd13b01036 [NETFILTER]: nf_nat: kill helper and seq_adjust hooks
Connection tracking helpers (specifically FTP) need to be called
before NAT sequence numbers adjustments are performed to be able
to compare them against previously seen ones. We've introduced
two new hooks around 2.6.11 to maintain this ordering when NAT
modules were changed to get called from conntrack helpers directly.

The cost of netfilter hooks is quite high and sequence number
adjustments are only rarely needed however. Add a RCU-protected
sequence number adjustment function pointer and call it from
IPv4 conntrack after calling the helper.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:52 +02:00
Patrick McHardy
55871d0479 [NETFILTER]: nf_conntrack_extend: warn on confirmed conntracks
New extensions may only be added to unconfirmed conntracks to avoid races
when reallocating the storage.

Also change NF_CT_ASSERT to use WARN_ON to get backtraces.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:51 +02:00
Patrick McHardy
8c87238b72 [NETFILTER]: nf_nat: don't add NAT extension for confirmed conntracks
Adding extensions to confirmed conntracks is not allowed to avoid races
on reallocation. Don't setup NAT for confirmed conntracks in case NAT
module is loaded late.

The has one side-effect, the connections existing before the NAT module
was loaded won't enter the bysource hash. The only case where this actually
makes a difference is in case of SNAT to a multirange where the IP before
NAT is also part of the range. Since old connections don't enter the
bysource hash the first new connection from the IP will have a new address
selected. This shouldn't matter at all.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:51 +02:00
Patrick McHardy
2bc780499a [NETFILTER]: nf_conntrack: add DCCP protocol support
Add DCCP conntrack helper. Thanks to Gerrit Renker <gerrit@erg.abdn.ac.uk>
for review and testing.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:49 +02:00
Patrick McHardy
d63a650736 [NETFILTER]: Add partial checksum validation helper
Move the UDP-Lite conntrack checksum validation to a generic helper
similar to nf_checksum() and make it fall back to nf_checksum()
in case the full packet is to be checksummed and hardware checksums
are available. This is to be used by DCCP conntrack, which also
needs to verify partial checksums.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:49 +02:00
Patrick McHardy
2d2d84c40e [NETFILTER]: nf_nat: remove unused name from struct nf_nat_protocol
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:48 +02:00
Patrick McHardy
535b57c7c1 [NETFILTER]: nf_nat: move NAT ctnetlink helpers to nf_nat_proto_common
Move to nf_nat_proto_common and rename to nf_nat_proto_... since they're
also used by protocols that don't have port numbers.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:47 +02:00
Patrick McHardy
937e0dfd87 [NETFILTER]: nf_nat: add helpers for common NAT protocol operations
Add generic ->in_range and ->unique_tuple ops to avoid duplicating them
again and again for future NAT modules and save a few bytes of text:

net/ipv4/netfilter/nf_nat_proto_tcp.c:
  tcp_in_range     |  -62 (removed)
  tcp_unique_tuple | -259 # 271 -> 12, # inlines: 1 -> 0, size inlines: 7 -> 0
 2 functions changed, 321 bytes removed

net/ipv4/netfilter/nf_nat_proto_udp.c:
  udp_in_range     |  -62 (removed)
  udp_unique_tuple | -259 # 271 -> 12, # inlines: 1 -> 0, size inlines: 7 -> 0
 2 functions changed, 321 bytes removed

net/ipv4/netfilter/nf_nat_proto_gre.c:
  gre_in_range |  -62 (removed)
 1 function changed, 62 bytes removed

vmlinux:
 5 functions changed, 704 bytes removed

Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:46 +02:00
Jan Engelhardt
3bb0362d2f [NETFILTER]: remove arpt_(un)register_target indirection macros
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:44 +02:00
Jan Engelhardt
95eea855af [NETFILTER]: remove arpt_target indirection macro
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:43 +02:00
Jan Engelhardt
4abff0775d [NETFILTER]: remove arpt_table indirection macro
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:43 +02:00
Jan Engelhardt
5452e425ad [NETFILTER]: annotate {arp,ip,ip6,x}tables with const
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 11:15:35 +02:00
Jan Engelhardt
b9f61b1603 [NETFILTER]: xt_sctp: simplify xt_sctp.h
The use of xt_sctp.h flagged up -Wshadow warnings in userspace, which
prompted me to look at it and clean it up. Basic operations have been
directly replaced by library calls (memcpy, memset is both available
in the kernel and userspace, and usually faster than a self-made
loop). The is_set and is_clear functions now use a processing time
shortcut, too.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 09:56:04 +02:00
Alexey Dobriyan
666953df35 [NETFILTER]: ip_tables: per-netns FILTER/MANGLE/RAW tables for real
Commit 9335f047fe aka
"[NETFILTER]: ip_tables: per-netns FILTER, MANGLE, RAW"
added per-netns _view_ of iptables rules. They were shown to user, but
ignored by filtering code. Now that it's possible to at least ping loopback,
per-netns tables can affect filtering decisions.

netns is taken in case of
	PRE_ROUTING, LOCAL_IN -- from in device,
	POST_ROUTING, LOCAL_OUT -- from out device,
	FORWARD -- from in device which should be equal to out device's netns.
		   This code is relatively new, so BUG_ON was plugged.

Wrappers were added to a) keep code the same from CONFIG_NET_NS=n users
(overwhelming majority), b) consolidate code in one place -- similar
changes will be done in ipv6 and arp netfilter code.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-04-14 09:56:02 +02:00
Gerrit Renker
f5572855ec [SKB]: __skb_queue_tail = __skb_insert before
This expresses __skb_queue_tail() in terms of __skb_insert(),
using __skb_insert_before() as auxiliary function.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-14 00:05:28 -07:00
Gerrit Renker
7de6c03336 [SKB]: __skb_append = __skb_queue_after
This expresses __skb_append in terms of __skb_queue_after, exploiting that

  __skb_append(old, new, list) = __skb_queue_after(list, old, new).

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-14 00:05:09 -07:00
Gerrit Renker
bf29927588 [SKB]: __skb_queue_after(prev) = __skb_insert(prev, prev->next)
By reordering, __skb_queue_after() is expressed in terms of __skb_insert().

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-14 00:04:51 -07:00
Gerrit Renker
f525c06d12 [SKB]: __skb_dequeue = skb_peek + __skb_unlink
By rearranging the order of declarations, __skb_dequeue() is expressed in terms of

 * skb_peek() and
 * __skb_unlink(),

thus in effect mirroring the analogue implementation of __skb_dequeue_tail().

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-14 00:04:12 -07:00
YOSHIFUJI Hideaki
e9df2e8fd8 [IPV6]: Use appropriate sock tclass setting for routing lookup.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 23:40:51 -07:00
YOSHIFUJI Hideaki
7cd636fe9c [IPV6]: IPv6 extension header structures need to be packed.
struct ipv6_opt_hdr is the common structure for IPv6 extension
headers, and it is common to increment the pointer to get
the real content.  On the other hand, since the structure
consists only of 1-byte next-header field and 1-byte length
field, size of that structure depends on architecture; 2 or 4.
Add "packed" attribute to get 2.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 23:33:52 -07:00
YOSHIFUJI Hideaki
cee8947338 [IPV6] MROUTE: Do not call ipv6_find_idev() directly.
Since NETDEV_REGISTER notifier chain is responsible for creating
inet6_dev{}, we do not need to call ipv6_find_idev() directly here.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 23:21:16 -07:00
Pavel Emelyanov
0204774191 [NETNS][DCCPV6]: Move the dccp_v6_ctl_sk on the struct net.
And replace all its usage with init_net's socket.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 22:32:25 -07:00
Pavel Emelyanov
7b1cffa8c9 [NETNS][DCCPV4]: Move the dccp_v4_ctl_sk on the struct net.
And replace all its usage with init_net's socket.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 22:29:37 -07:00
Pavel Emelyanov
67019cc9ee [NETNS]: Add an empty netns_dccp structure on struct net.
According to the overall struct net design, it will be
filled with DCCP-related members.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 22:28:42 -07:00
Denis V. Lunev
5f4472c5a6 [TCP]: Remove owner from tcp_seq_afinfo.
Move it to tcp_seq_afinfo->seq_fops as should be.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 22:13:53 -07:00
Denis V. Lunev
68fcadd16c [TCP]: Place file operations directly into tcp_seq_afinfo.
No need to have separate never-used variable.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 22:13:30 -07:00
Denis V. Lunev
9427c4b36b [TCP]: Move seq_ops from tcp_iter_state to tcp_seq_afinfo.
No need to create seq_operations for each instance of 'netstat'.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 22:12:13 -07:00
Denis V. Lunev
a4146b1b2c [TCP]: Replace struct net on tcp_iter_state with seq_net_private.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 22:11:14 -07:00
David S. Miller
6fb9114e4b Merge branch 'net-2.6.26-misc-20080412b' of git://git.linux-ipv6.org/gitroot/yoshfuji/linux-2.6-dev 2008-04-12 19:19:46 -07:00
Paul Moore
03e1ad7b5d LSM: Make the Labeled IPsec hooks more stack friendly
The xfrm_get_policy() and xfrm_add_pol_expire() put some rather large structs
on the stack to work around the LSM API.  This patch attempts to fix that
problem by changing the LSM API to require only the relevant "security"
pointers instead of the entire SPD entry; we do this for all of the
security_xfrm_policy*() functions to keep things consistent.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12 19:07:52 -07:00
Paul Moore
00447872a6 NetLabel: Allow passing the LSM domain as a shared pointer
Smack doesn't have the need to create a private copy of the LSM "domain" when
setting NetLabel security attributes like SELinux, however, the current
NetLabel code requires a private copy of the LSM "domain".  This patches fixes
that by letting the LSM determine how it wants to pass the domain value.

 * NETLBL_SECATTR_DOMAIN_CPY
   The current behavior, NetLabel assumes that the domain value is a copy and
   frees it when done

 * NETLBL_SECATTR_DOMAIN
   New, Smack-friendly behavior, NetLabel assumes that the domain value is a
   reference to a string managed by the LSM and does not free it when done

Signed-off-by: Paul Moore <paul.moore@hp.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12 19:06:42 -07:00
Rusty Russell
14daa02139 net: make struct tun_struct private to tun.c
There's no reason for this to be in the header, and it just hurts
recompile time.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Max Krasnyanskiy <maxk@qualcomm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-12 18:48:58 -07:00