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* cpu-hotplug: replace lock_cpu_hotplug() with get_online_cpus()Gautham R Shenoy2008-01-25
| | | | | | | | | | | | | | | | | Replace all lock_cpu_hotplug/unlock_cpu_hotplug from the kernel and use get_online_cpus and put_online_cpus instead as it highlights the refcount semantics in these operations. The new API guarantees protection against the cpu-hotplug operation, but it doesn't guarantee serialized access to any of the local data structures. Hence the changes needs to be reviewed. In case of pseries_add_processor/pseries_remove_processor, use cpu_maps_update_begin()/cpu_maps_update_done() as we're modifying the cpu_present_map there. Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Kobject: convert remaining kobject_unregister() to kobject_put()Greg Kroah-Hartman2008-01-24
| | | | | | | | | | | There is no need for kobject_unregister() anymore, thanks to Kay's kobject cleanup changes, so replace all instances of it with kobject_put(). Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Kobject: convert net/bridge/br_if.c to use kobject_init/add_ng()Greg Kroah-Hartman2008-01-24
| | | | | | | | | This converts the code to use the new kobject functions, cleaning up the logic in doing so. Cc: Stephen Hemminger <shemminger@linux-foundation.org> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Kobject: change net/bridge to use kobject_create_and_addGreg Kroah-Hartman2008-01-24
| | | | | | | | | | | The kobject in the bridge code is only used for registering with sysfs, not for any lifespan rules. This patch changes it to be only a pointer and use the simpler api for this kind of thing. Cc: Stephen Hemminger <shemminger@linux-foundation.org> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Revert "mac80211: warn when receiving frames with unaligned data"Linus Torvalds2008-01-24
| | | | | | | | | | | | This reverts commit 81100eb80add328c4d2a377326f15aa0e7236398 for the release, to avoid the unnecessary warning noise that is only really relevant to wireless driver developers. The warning will probably go right back in after I cut the release, but at least we won't unnecessarily worry users. Acked-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [INET]: Fix truesize setting in ip_append_dataHerbert Xu2008-01-23
| | | | | | | | | | | | | | | | As it is ip_append_data only counts page fragments to the skb that allocated it. As such it means that the first skb gets hit with a 4K charge even though it might have only used a fraction of it while all subsequent skb's that use the same page gets away with no charge at all. This bug was exposed by the UDP accounting patch. [ The wmem_alloc bumping needs to be moved with the truesize, noticed by Takahiro Yasui. -DaveM ] Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETNS]: Re-export init_net via EXPORT_SYMBOL.Denis V. Lunev2008-01-23
| | | | | | | | | init_net is used added as a parameter to a lot of old API calls, f.e. ip_dev_find. These calls were exported as EXPORT_SYMBOL. So, export init_net as EXPORT_SYMBOL to keep networking API consistent. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: Add missing skb->truesize increment in ip_append_page().David S. Miller2008-01-23
| | | | | | | And as noted by Takahiro Yasui, we thus need to bump the sk->sk_wmem_alloc at this spot as well. Signed-off-by: David S. Miller <davem@davemloft.net>
* [BLUETOOTH]: Move children of connection device to NULL before connection down.Dave Young2008-01-23
| | | | | | | | | | | | The rfcomm tty device will possibly retain even when conn is down, and sysfs doesn't support zombie device moving, so this patch move the tty device before conn device is destroyed. For the bug refered please see : http://lkml.org/lkml/2007/12/28/87 Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ICMP]: ICMP_MIB_OUTMSGS increment duplicatedWang Chen2008-01-21
| | | | | | | | | | | | | | | | | Commit "96793b482540f3a26e2188eaf75cb56b7829d3e3" (Add ICMPMsgStats MIB (RFC 4293)) made a mistake. In that patch, David L added a icmp_out_count() in ip_push_pending_frames(), remove icmp_out_count() from icmp_reply(). But he forgot to remove icmp_out_count() from icmp_send() too. Since icmp_send and icmp_reply will call icmp_push_reply, which will call ip_push_pending_frames, a duplicated increment happened in icmp_send. This patch remove the icmp_out_count from icmp_send too. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: RFC 2011 compatibility brokenWang Chen2008-01-21
| | | | | | | | | The snmp6 entry name was changed, and it broke compatibility to RFC 2011. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: ICMP6_MIB_OUTMSGS increment duplicatedWang Chen2008-01-21
| | | | | | | | | | | | icmpv6_send() calls ip6_push_pending_frames() indirectly. Both ip6_push_pending_frames() and icmpv6_send() increment counter ICMP6_MIB_OUTMSGS. This patch remove the increment from icmpv6_send. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: rtnl_link: fix use-after-freePatrick McHardy2008-01-20
| | | | | | | | | | | | | | | | | | | | | | When unregistering the rtnl_link_ops, all existing devices using the ops are destroyed. With nested devices this may lead to a use-after-free despite the use of for_each_netdev_safe() in case the upper device is next in the device list and is destroyed by the NETDEV_UNREGISTER notifier. The easy fix is to restart scanning the device list after removing a device. Alternatively we could add new devices to the front of the list to avoid having dependant devices follow the device they depend on. A third option would be to only restart scanning if dev->iflink of the next device matches dev->ifindex of the current one. For now this seems like the safest solution. With this patch, the veth rtnl_link_ops unregistration can use rtnl_link_unregister() directly since it now also handles destruction of multiple devices at once. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [AF_KEY]: Fix skb leak on pfkey_send_migrate() errorPatrick McHardy2008-01-20
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IrDA]: af_irda memory leak fixesJesper Juhl2008-01-20
| | | | | | | | | | | Here goes an IrDA patch against your latest net-2.6 tree. This patch fixes some af_irda memory leaks. It also checks for irias_new_obect() return value. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NEIGH]: Revert 'Fix race between neigh_parms_release and neightbl_fill_parms'David S. Miller2008-01-20
| | | | | | | | | | | | Commit 9cd40029423701c376391da59d2c6469672b4bed (Fix race between neigh_parms_release and neightbl_fill_parms) introduced device reference counting regressions for several people, see: http://bugzilla.kernel.org/show_bug.cgi?id=9778 for example. Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: bridge-netfilter: fix net_device refcnt leaksPatrick McHardy2008-01-20
| | | | | | | | | | | | | | | | | | | | When packets are flood-forwarded to multiple output devices, the bridge-netfilter code reuses skb->nf_bridge for each clone to store the bridge port. When queueing packets using NFQUEUE netfilter takes a reference to skb->nf_bridge->physoutdev, which is overwritten when the packet is forwarded to the second port. This causes refcount unterflows for the first device and refcount leaks for all others. Additionally this provides incorrect data to the iptables physdev match. Unshare skb->nf_bridge by copying it if it is shared before assigning the physoutdev device. Reported, tested and based on initial patch by Jan Christoph Nordholz <hesso@pool.math.tu-berlin.de>. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6] ROUTE: Make sending algorithm more friendly with RFC 4861.YOSHIFUJI Hideaki2008-01-20
| | | | | | | | | | | | | | | | | | | We omit (or delay) sending NSes for known-to-unreachable routers (in NUD_FAILED state) according to RFC 4191 (Default Router Preferences and More-Specific Routes). But this is not fully compatible with RFC 4861 (Neighbor Discovery Protocol for IPv6), which does not remember unreachability of neighbors. So, let's avoid mixing sending algorithm of RFC 4191 and that of RFC 4861, and make the algorithm more friendly with RFC 4861 if RFC 4191 is disabled. Issue was found by IPv6 Ready Logo Core Self_Test 1.5.0b2 (by TAHI Project), and has been tracked down by Mitsuru Chinen <mitch@linux.vnet.ibm.com>. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] FIB_HASH : Avoid unecessary loop in fn_hash_dump_zone()Eric Dumazet2008-01-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I noticed "ip route list" was slower than "cat /proc/net/route" on a machine with a full Internet routing table (214392 entries : Special thanks to Robert ;) ) This is similar to problem reported in commit d8c9283089287341c85a0a69de32c2287a990e71 ("[IPV4] ROUTE: ip_rt_dump() is unecessary slow") Fix is to avoid scanning the begining of fz_hash table, but directly seek to the right offset. Before patch : time ip route >/tmp/ROUTE real 0m1.285s user 0m0.712s sys 0m0.436s After patch # time ip route >/tmp/ROUTE real 0m0.835s user 0m0.692s sys 0m0.124s Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] fib_trie: fix duplicated route issueJoonwoo Park2008-01-20
| | | | | | | | | | http://bugzilla.kernel.org/show_bug.cgi?id=9493 The fib allows making identical routes with 'ip route replace'. This patch makes the fib return -EEXIST if replacement would cause duplication. Signed-off-by: Joonwoo Park <joonwpark81@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] fib_hash: fix duplicated route issueJoonwoo Park2008-01-20
| | | | | | | | | | http://bugzilla.kernel.org/show_bug.cgi?id=9493 The fib allows making identical routes with 'ip route replace'. This patch makes the fib return -EEXIST if replacement would cause duplication. Signed-off-by: Joonwoo Park <joonwpark81@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: Mischecked tw match in __inet6_check_established.Pavel Emelyanov2008-01-20
| | | | | | | | | | | | | | When looking for a conflicting connection the !sk->sk_bound_dev_if check is performed only for live sockets, but not for timewait-ed. This is not the case for ipv4, for __inet6_lookup_established in both ipv4 and ipv6 and for other places that check for tw-s. Was this missed accidentally? If so, then this patch fixes it and besides makes use if the dif variable declared in the function. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* rfkill: call rfkill_led_trigger_unregister() on errorEric Paris2008-01-20
| | | | | | | | | Code inspection turned up that error cases in rfkill_register() do not call rfkill_led_trigger_unregister() even though we have already registered. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [TOKENRING]: rif_timer not initialized properlyEric Dumazet2008-01-14
| | | | | Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: bridge: fix double POST_ROUTING invocationPatrick McHardy2008-01-11
| | | | | | | | | | | | | | | | | | | | | | | | | The bridge code incorrectly causes two POST_ROUTING hook invocations for DNATed packets that end up on the same bridge device. This happens because packets with a changed destination address are passed to dst_output() to make them go through the neighbour output function again to build a new destination MAC address, before they will continue through the IP hooks simulated by bridge netfilter. The resulting hook order is: PREROUTING (bridge netfilter) POSTROUTING (dst_output -> ip_output) FORWARD (bridge netfilter) POSTROUTING (bridge netfilter) The deferred hooks used to abort the first POST_ROUTING invocation, but since the only thing bridge netfilter actually really wants is a new MAC address, we can avoid going through the IP stack completely by simply calling the neighbour output function directly. Tested, reported and lots of data provided by: Damien Thebault <damien.thebault@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: xt_helper: Do not bypass RCUJan Engelhardt2008-01-11
| | | | | | | | Use the @helper variable that was just obtained. Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: ip6t_eui64: Fixes calculation of Universal/Local bitYasuyuki Kozakai2008-01-11
| | | | | | | | | | | | | RFC2464 says that the next to lowerst order bit of the first octet of the Interface Identifier is formed by complementing the Universal/Local bit of the EUI-64. But ip6t_eui64 uses OR not XOR. Thanks Peter Ivancik for reporing this bug and posting a patch for it. Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [VLAN]: nested VLAN: fix lockdep's recursive locking warningJarek Poplawski2008-01-11
| | | | | | | | | | | | Allow vlans nesting other vlans without lockdep's warnings (max. 2 levels i.e. parent + child). Thanks to Patrick McHardy for pointing a bug in the first version of this patch. Reported-by: Benny Amorsen Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DECNET] ROUTE: fix rcu_dereference() uses in /proc/net/decnet_cacheEric Dumazet2008-01-11
| | | | | | | | | | | | | | In dn_rt_cache_get_next(), no need to guard seq->private by a rcu_dereference() since seq is private to the thread running this function. Reading seq.private once (as guaranted bu rcu_dereference()) or several time if compiler really is dumb enough wont change the result. But we miss real spots where rcu_dereference() are needed, both in dn_rt_cache_get_first() and dn_rt_cache_get_next() Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [BLUETOOTH]: rfcomm tty BUG_ON() code fixDave Young2008-01-11
| | | | | | | | | | | | | | | | 1) In tty.c the BUG_ON at line 115 will never be called, because the the before list_del_init in this same function. 115 BUG_ON(!list_empty(&dev->list)); So move the list_del_init to rfcomm_dev_del 2) The rfcomm_dev_del could be called from diffrent path (rfcomm_tty_hangup/rfcomm_dev_state_change/rfcomm_release_dev), So add another BUG_ON when the rfcomm_dev_del is called more than one time. Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [AX25] af_ax25: Possible circular locking.Jarek Poplawski2008-01-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bernard Pidoux F6BVP reported: > When I killall kissattach I can see the following message. > > This happens on kernel 2.6.24-rc5 already patched with the 6 previously > patches I sent recently. > > > ======================================================= > [ INFO: possible circular locking dependency detected ] > 2.6.23.9 #1 > ------------------------------------------------------- > kissattach/2906 is trying to acquire lock: > (linkfail_lock){-+..}, at: [<d8bd4603>] ax25_link_failed+0x11/0x39 [ax25] > > but task is already holding lock: > (ax25_list_lock){-+..}, at: [<d8bd7c7c>] ax25_device_event+0x38/0x84 > [ax25] > > which lock already depends on the new lock. > > > the existing dependency chain (in reverse order) is: ... lockdep is worried about the different order here: #1 (rose_neigh_list_lock){-+..}: #3 (ax25_list_lock){-+..}: #0 (linkfail_lock){-+..}: #1 (rose_neigh_list_lock){-+..}: #3 (ax25_list_lock){-+..}: #0 (linkfail_lock){-+..}: So, ax25_list_lock could be taken before and after linkfail_lock. I don't know if this three-thread clutch is very probable (or possible at all), but it seems another bug reported by Bernard ("[...] system impossible to reboot with linux-2.6.24-rc5") could have similar source - namely ax25_list_lock held by ax25_kill_by_device() during ax25_disconnect(). It looks like the only place which calls ax25_disconnect() this way, so I guess, it isn't necessary. This patch is breaking the lock for ax25_disconnect(). Reported-and-tested-by: Bernard Pidoux <f6bvp@free.fr> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [AX25]: Kill user triggable printks.maximilian attems2008-01-10
| | | | | | | | | | | sfuzz can easily trigger any of those. move the printk message to the corresponding comment: makes the intention of the code clear and easy to pick up on an scheduled removal. as bonus simplify the braces placement. Signed-off-by: maximilian attems <max@stro.at> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] ROUTE: fix rcu_dereference() uses in /proc/net/rt_cacheEric Dumazet2008-01-10
| | | | | | | | | | | | | | | In rt_cache_get_next(), no need to guard seq->private by a rcu_dereference() since seq is private to the thread running this function. Reading seq.private once (as guaranted bu rcu_dereference()) or several time if compiler really is dumb enough wont change the result. But we miss real spots where rcu_dereference() are needed, both in rt_cache_get_first() and rt_cache_get_next() Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NEIGH]: Fix race between neigh_parms_release and neightbl_fill_parmsPavel Emelyanov2008-01-10
| | | | | | | | | | | | | | | | | | | The neightbl_fill_parms() is called under the write-locked tbl->lock and accesses the parms->dev. The negh_parm_release() calls the dev_put(parms->dev) without this lock. This creates a tiny race window on which the parms contains potentially stale dev pointer. To fix this race it's enough to move the dev_put() upper under the tbl->lock, but note, that the parms are held by neighbors and thus can live after the neigh_parms_release() is called, so we still can have a parm with bad dev pointer. I didn't find where the neigh->parms->dev is accessed, but still think that putting the dev is to be done in a place, where the parms are really freed. Am I right with that? Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATM]: Check IP header validity in mpc_send_packetHerbert Xu2008-01-09
| | | | | | | | | | | | | Al went through the ip_fast_csum callers and found this piece of code that did not validate the IP header. While root crashing the machine by sending bogus packets through raw or AF_PACKET sockets isn't that serious, it is still nice to react gracefully. This patch ensures that the skb has enough data for an IP header and that the header length field is valid. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: IPV6_MULTICAST_IF setting is ignored on link-local connect()Brian Haley2008-01-09
| | | | | | Signed-off-by: Brian Haley <brian.haley@hp.com> Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: xfrm_algo_clone() allocates too much memoryEric Dumazet2008-01-09
| | | | | | | | | | | | | alg_key_len is the length in bits of the key, not in bytes. Best way to fix this is to move alg_len() function from net/xfrm/xfrm_user.c to include/net/xfrm.h, and to use it in xfrm_algo_clone() alg_len() is renamed to xfrm_alg_len() because of its global exposition. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LRO] Fix lro_mgr->features checksBrice Goglin2008-01-09
| | | | | | | | | | lro_mgr->features contains a bitmask of LRO_F_* values which are defined as power of two, not as bit indexes. They must be checked with x&LRO_F_FOO, not with test_bit(LRO_F_FOO,&x). Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr> Acked-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Clone the sk_buff 'iif' field in __skb_clone()Paul Moore2008-01-09
| | | | | | | | | | | | | | | | | Both NetLabel and SELinux (other LSMs may grow to use it as well) rely on the 'iif' field to determine the receiving network interface of inbound packets. Unfortunately, at present this field is not preserved across a skb clone operation which can lead to garbage values if the cloned skb is sent back through the network stack. This patch corrects this problem by properly copying the 'iif' field in __skb_clone() and removing the 'iif' field assignment from skb_act_clone() since it is no longer needed. Also, while we are here, put the assignments in the same order as the offsets to reduce cacheline bounces. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] ROUTE: ip_rt_dump() is unecessary slowEric Dumazet2008-01-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I noticed "ip route list cache x.y.z.t" can be *very* slow. While strace-ing -T it I also noticed that first part of route cache is fetched quite fast : recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"p\0\0\0\30\0\2\0\254i\202 GXm\0\0\2 \0\376\0\0\2\0\2\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3772 <0.000047> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\234\0\0\0\30\0\2\0\254i\ 202GXm\0\0\2 \0\376\0\0\1\0\2"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3736 <0.000042> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\204\0\0\0\30\0\2\0\254i\ 202GXm\0\0\2 \0\376\0\0\1\0\2"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3740 <0.000055> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\234\0\0\0\30\0\2\0\254i\ 202GXm\0\0\2 \0\376\0\0\1\0\2"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3712 <0.000043> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\204\0\0\0\30\0\2\0\254i\ 202GXm\0\0\2 \0\376\0\0\1\0\2"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3732 <0.000053> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"p\0\0\0\30\0\2\0\254i\202 GXm\0\0\2 \0\376\0\0\2\0\2\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3708 <0.000052> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"p\0\0\0\30\0\2\0\254i\202 GXm\0\0\2 \0\376\0\0\2\0\2\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3680 <0.000041> while the part at the end of the table is more expensive: recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\204\0\0\0\30\0\2\0\254i\202GXm\0\0\2 \0\376\0\0\1\0\2"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3656 <0.003857> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\204\0\0\0\30\0\2\0\254i\202GXm\0\0\2 \0\376\0\0\1\0\2"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3772 <0.003891> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"p\0\0\0\30\0\2\0\254i\202GXm\0\0\2 \0\376\0\0\2\0\2\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3712 <0.003765> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"p\0\0\0\30\0\2\0\254i\202GXm\0\0\2 \0\376\0\0\2\0\2\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3700 <0.003879> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"p\0\0\0\30\0\2\0\254i\202GXm\0\0\2 \0\376\0\0\2\0\2\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3676 <0.003797> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"p\0\0\0\30\0\2\0\254i\202GXm\0\0\2 \0\376\0\0\2\0\2\0"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3724 <0.003856> recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\234\0\0\0\30\0\2\0\254i\202GXm\0\0\2 \0\376\0\0\1\0\2"..., 16384}], msg_controllen=0, msg_flags=0}, 0) = 3736 <0.003848> The following patch corrects this performance/latency problem, removing quadratic behavior. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Stop polling when napi_disable() is pending.David S. Miller2008-01-09
| | | | | | | | | | This finally adds the code in net_rx_action() to break out of the ->poll()'ing loop when a napi_disable() is found to be pending. Now, even if a device is being flooded with packets it can be cleanly brought down. Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: return an error when SIWRATE doesn't match any rateAndrew Lutomirski2008-01-09
| | | | | | | | Currently mac80211 fails silently when trying to set a nonexistent rate. Return an error instead. Signed-Off-By: Andy Lutomirski <luto@myrealbox.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [IRDA]: irda_create() nuke user triggable printkmaximilian attems2008-01-09
| | | | | | | | | | easy to trigger as user with sfuzz. irda_create() is quiet on unknown sock->type, match this behaviour for SOCK_DGRAM unknown protocol Signed-off-by: maximilian attems <max@stro.at> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Add back the code that accounted for FORWARD_TSN parameter in INIT.Vlad Yasevich2008-01-09
| | | | | | | | | Some recent changes completely removed accounting for the FORWARD_TSN parameter length in the INIT and INIT-ACK chunk. This is wrong and should be restored. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Correctly handle AUTH parameters in unexpected INITVlad Yasevich2008-01-09
| | | | | | | | | | When processing an unexpected INIT chunk, we do not need to do any preservation of the old AUTH parameters. In fact, doing such preservations will nullify AUTH and allow connection stealing. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Fix the name of the authentication event.Vlad Yasevich2008-01-09
| | | | | | | The even should be called SCTP_AUTHENTICATION_INDICATION. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] ipconfig: Fix regression in ip command line processingAmos Waterland2008-01-09
| | | | | | | | | | | | | | The recent changes for ip command line processing fixed some problems but unfortunately broke some common usage scenarios. In current 2.6.24-rc6 the following command line results in no IP address assignment, which is surely a regression: ip=10.0.2.15::10.0.2.2:255.255.255.0::eth0:off Please find below a patch that works for all cases I can find. Signed-off-by: Amos Waterland <apw@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] raw: Strengthen check on validity of iph->ihlHerbert Xu2008-01-09
| | | | | | | | | | | | | We currently check that iph->ihl is bounded by the real length and that the real length is greater than the minimum IP header length. However, we did not check the caes where iph->ihl is less than the minimum IP header length. This breaks because some ip_fast_csum implementations assume that which is quite reasonable. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [INET]: Fix netdev renaming and inet address labelsMark McLoughlin2008-01-04
| | | | | | | | | | | | | | | | | | | | | | | When re-naming an interface, the previous secondary address labels get lost e.g. $> brctl addbr foo $> ip addr add 192.168.0.1 dev foo $> ip addr add 192.168.0.2 dev foo label foo:00 $> ip addr show dev foo | grep inet inet 192.168.0.1/32 scope global foo inet 192.168.0.2/32 scope global foo:00 $> ip link set foo name bar $> ip addr show dev bar | grep inet inet 192.168.0.1/32 scope global bar inet 192.168.0.2/32 scope global bar:2 Turns out to be a simple thinko in inetdev_changename() - clearly we want to look at the address label, rather than the device name, for a suffix to retain. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: Do not define km_migrate() if !CONFIG_XFRM_MIGRATEEric Dumazet2008-01-04
| | | | | | | | | | | | | | | | | | | | | | In include/net/xfrm.h we find : #ifdef CONFIG_XFRM_MIGRATE extern int km_migrate(struct xfrm_selector *sel, u8 dir, u8 type, struct xfrm_migrate *m, int num_bundles); ... #endif We can also guard the function body itself in net/xfrm/xfrm_state.c with same condition. (Problem spoted by sparse checker) make C=2 net/xfrm/xfrm_state.o ... net/xfrm/xfrm_state.c:1765:5: warning: symbol 'km_migrate' was not declared. Should it be static? ... Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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