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2010-10-06nl80211: fix error in generic netif_running checkJohannes Berg
Yikes! The error return keeps a netdev reference and the rdev mutex locked, fix that! Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06cfg80211/mac80211: allow per-station GTKsJohannes Berg
This adds API to allow adding per-station GTKs, updates mac80211 to support it, and also allows drivers to remove a key from hwaccel again when this may be necessary due to multiple GTKs. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06mac80211: avoid transmitting delBA to old APJohannes Berg
When roaming while we have active BA session, we can end up transmitting delBA frames to the old AP while we're already on the new AP's channel, which can cause warnings. Simply avoid sending those frames, but still tear down the internal session state, since they are not really necessary anyway as we will implicitly disassociate when sending the association to the new AP. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-06Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2010-10-06mac80211: delete AddBA response timerJohannes Berg
We never delete the addBA response timer, which is typically fine, but if the station it belongs to is deleted very quickly after starting the BA session, before the peer had a chance to reply, the timer may fire after the station struct has been freed already. Therefore, we need to delete the timer in a suitable spot -- best when the session is being stopped (which will happen even then) in which case the delete will be a no-op most of the time. I've reproduced the scenario and tested the fix. This fixes the crash reported at http://mid.gmane.org/4CAB6F96.6090701@candelatech.com Cc: stable@kernel.org Reported-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05fib: RCU conversion of fib_lookup()Eric Dumazet
fib_lookup() converted to be called in RCU protected context, no reference taken and released on a contended cache line (fib_clntref) fib_table_lookup() and fib_semantic_match() get an additional parameter. struct fib_info gets an rcu_head field, and is freed after an rcu grace period. Stress test : (Sending 160.000.000 UDP frames on same neighbour, IP route cache disabled, dual E5540 @2.53GHz, 32bit kernel, FIB_HASH) (about same results for FIB_TRIE) Before patch : real 1m31.199s user 0m13.761s sys 23m24.780s After patch: real 1m5.375s user 0m14.997s sys 15m50.115s Before patch Profile : 13044.00 15.4% __ip_route_output_key vmlinux 8438.00 10.0% dst_destroy vmlinux 5983.00 7.1% fib_semantic_match vmlinux 5410.00 6.4% fib_rules_lookup vmlinux 4803.00 5.7% neigh_lookup vmlinux 4420.00 5.2% _raw_spin_lock vmlinux 3883.00 4.6% rt_set_nexthop vmlinux 3261.00 3.9% _raw_read_lock vmlinux 2794.00 3.3% fib_table_lookup vmlinux 2374.00 2.8% neigh_resolve_output vmlinux 2153.00 2.5% dst_alloc vmlinux 1502.00 1.8% _raw_read_lock_bh vmlinux 1484.00 1.8% kmem_cache_alloc vmlinux 1407.00 1.7% eth_header vmlinux 1406.00 1.7% ipv4_dst_destroy vmlinux 1298.00 1.5% __copy_from_user_ll vmlinux 1174.00 1.4% dev_queue_xmit vmlinux 1000.00 1.2% ip_output vmlinux After patch Profile : 13712.00 15.8% dst_destroy vmlinux 8548.00 9.9% __ip_route_output_key vmlinux 7017.00 8.1% neigh_lookup vmlinux 4554.00 5.3% fib_semantic_match vmlinux 4067.00 4.7% _raw_read_lock vmlinux 3491.00 4.0% dst_alloc vmlinux 3186.00 3.7% neigh_resolve_output vmlinux 3103.00 3.6% fib_table_lookup vmlinux 2098.00 2.4% _raw_read_lock_bh vmlinux 2081.00 2.4% kmem_cache_alloc vmlinux 2013.00 2.3% _raw_spin_lock vmlinux 1763.00 2.0% __copy_from_user_ll vmlinux 1763.00 2.0% ip_output vmlinux 1761.00 2.0% ipv4_dst_destroy vmlinux 1631.00 1.9% eth_header vmlinux 1440.00 1.7% _raw_read_unlock_bh vmlinux Reference results, if IP route cache is enabled : real 0m29.718s user 0m10.845s sys 7m37.341s 25213.00 29.5% __ip_route_output_key vmlinux 9011.00 10.5% dst_release vmlinux 4817.00 5.6% ip_push_pending_frames vmlinux 4232.00 5.0% ip_finish_output vmlinux 3940.00 4.6% udp_sendmsg vmlinux 3730.00 4.4% __copy_from_user_ll vmlinux 3716.00 4.4% ip_route_output_flow vmlinux 2451.00 2.9% __xfrm_lookup vmlinux 2221.00 2.6% ip_append_data vmlinux 1718.00 2.0% _raw_spin_lock_bh vmlinux 1655.00 1.9% __alloc_skb vmlinux 1572.00 1.8% sock_wfree vmlinux 1345.00 1.6% kfree vmlinux Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05caif: fix two caif_connect() bugsEric Dumazet
caif_connect() might dereference a netdevice after dev_put() it. It also doesnt check dev_get_by_index() return value and could dereference a NULL pointer. Fix it, using RCU to avoid taking a reference. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05bonding: fix to rejoin multicast groups immediatelyFlavio Leitner
The IGMP specs states that if the system receives a membership report, it shouldn't send another for the next minute. However, if a link failure happens right after that, the backup slave and the switch connected to this slave will not know about the multicast and the traffic will hang for about a minute. This patch fixes it to rejoin multicast groups immediately after a failover restoring the multicast traffic. Signed-off-by: Flavio Leitner <fleitner@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05AF_UNIX: Implement SO_TIMESTAMP and SO_TIMETAMPNS on Unix socketsAlban Crequy
Userspace applications can already request to receive timestamps with: setsockopt(sockfd, SOL_SOCKET, SO_TIMESTAMP, ...) Although setsockopt() returns zero (success), timestamps are not added to the ancillary data. This patch fixes that on SOCK_DGRAM and SOCK_SEQPACKET Unix sockets. Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05net neigh: RCU conversion of neigh hash tableEric Dumazet
David This is the first step for RCU conversion of neigh code. Next patches will convert hash_buckets[] and "struct neighbour" to RCU protected objects. Thanks [PATCH net-next] net neigh: RCU conversion of neigh hash table Instead of storing hash_buckets, hash_mask and hash_rnd in "struct neigh_table", a new structure is defined : struct neigh_hash_table { struct neighbour **hash_buckets; unsigned int hash_mask; __u32 hash_rnd; struct rcu_head rcu; }; And "struct neigh_table" has an RCU protected pointer to such a neigh_hash_table. This means the signature of (*hash)() function changed: We need to add a third parameter with the actual hash_rnd value, since this is not anymore a neigh_table field. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05net neigh: neigh_delete() and neigh_add() changesEric Dumazet
neigh_delete() and neigh_add() dont need to touch device refcount, we hold RTNL when calling them, so device cannot disappear under us. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05net: add a core netdev->rx_dropped counterEric Dumazet
In various situations, a device provides a packet to our stack and we drop it before it enters protocol stack : - softnet backlog full (accounted in /proc/net/softnet_stat) - bad vlan tag (not accounted) - unknown/unregistered protocol (not accounted) We can handle a per-device counter of such dropped frames at core level, and automatically adds it to the device provided stats (rx_dropped), so that standard tools can be used (ifconfig, ip link, cat /proc/net/dev) This is a generalization of commit 8990f468a (net: rx_dropped accounting), thus reverting it. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05mac80211: fix channel assumption for association done workLuis R. Rodriguez
Be consistent and use the wk->chan instead of the local->hw.conf.channel for the association done work. This prevents any possible races against channel changes while we run this work. In the case that the race did happen we would be initializing the bit rates for the new AP under the assumption of a wrong channel and in the worst case, wrong band. This could lead to trying to assuming we could use CCK frames on 5 GHz, for example. This patch has a fix for kernels >= v2.6.34 Cc: stable@kernel.org Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05mac80211: fix deadlock with multiple interfacesJohannes Berg
The locking around ieee80211_recalc_smps is buggy -- it cannot acquire another interface's mutex while the iflist mutex is held because another code path could be holding the iface mutex and trying to acquire the iflist mutex. But the locking is also unnecessary, we only check "ifmgd->associated" as a bool, and don't use the pointer (in check_mgd_smps). Reported-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05nl80211: reduce dumping boilerplateJohannes Berg
Consolidate boilerplate code needed for .dumpit calls operating on netdevs. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05nl80211: use generic check for netif_runningJohannes Berg
Use a new flag that requires the netdev to be UP and use it to check instead of coding the check into all functions that require it. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05nl80211: use the new genetlink pre/post_doit hooksJohannes Berg
This makes nl80211 use the new genetlink pre_doit/post_doit hooks for locking and checking the interface/wiphy index. This significantly reduces the code size and the likelihood of locking errors. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05genetlink: introduce pre_doit/post_doit hooksJohannes Berg
Each family may have some amount of boilerplate locking code that applies to most, or even all, commands. This allows a family to handle such things in a more generic way, by allowing it to a) include private flags in each operation b) specify a pre_doit hook that is called, before an operation's doit() callback and may return an error directly, c) specify a post_doit hook that can undo locking or similar things done by pre_doit, and finally d) include two private pointers in each info struct passed between all these operations including doit(). (It's two because I'll need two in nl80211 -- can be extended.) Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05mac80211: Add WME information element for IBSSBruno Randolf
Enable WME QoS in IBSS mode by adding a WME information element to beacons and probe respones and by checking for it and marking stations as WME capable if it is present. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05mac80211: distinct between max rates and the number of rates the hw can reportHelmut Schaa
Some drivers cannot handle multiple retry rates specified by the rc algorithm but instead use their own retry table (for example rt2800). However, if such a device registers itself with a max_rates value of 1 the rc algorithm cannot make use of the extended information the device can provide about retried rates. On the other hand, if a device registers itself with a max_rates value > 1 the rc algorithm assumes that the device can handle multi rate retries. Fix this issue by introducing another hw parameter max_report_rates that can be set to a different value then max_rates to indicate if a device is capable of reporting more rates then specified in max_rates. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05mac80211: fix for WDS interfacesBill Jordan
Initialize the rate table for WDS interfaces, and add cases to allow WDS packets to pass the xmit and receive tests. Signed-off-by: Bill Jordan <bjordan@rajant.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05cfg80211: patches to allow setting the WDS peerBill Jordan
Added a nl interface to set the peer bssid of a WDS interface. Signed-off-by: Bill Jordan <bjordan@rajant.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05mac80211: Add validity check for beacon_crc valueJuuso Oikarinen
On association to an AP, after receiving beacons, the beacon_crc value is set. The beacon_crc value is not reset in disassociation, but the BSS data may be expired at a later point. When associating again, it's possible that a beacon for the AP is not received, resulting in the beacon_ies to remain NULL. After association, further beacons will not update the beacon data, as the crc value of the beacon has not changed, and the beacon_crc still holds a value matching the beacon. The beacon_ies will remain forever null. One of the results of this is that WLAN power save cannot be entered, the STA will remain foreven in active mode. Fix this by adding a validation flag for the beacon_crc, which is cleared on association. Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05mac80211: perform scan cancel in hw reset workStanislaw Gruszka
Move ieee80211_scan_cancel() and all other related code to ieee80211_restart_work() as ieee80211_restart_hw() is intended to be callable from any context. Fix a bug that RTNL lock is not taken during ieee80211_cancel_scan(). Take local->mtx before WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) to prevent the race condition with __ieee80211_start_scan() described here: http://marc.info/?l=linux-wireless&m=128516716810537&w=2 Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05cfg80211: fix lockingJohannes Berg
Add missing unlocking of the wiphy in set_channel, and don't try to unlock a non-existing wiphy in set_cqm. Cc: stable@kernel.org [2.6.35+] Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05cfg80211/mac80211: allow management frame TX in AP modeJohannes Berg
Enable management frame transmission and subscribing to management frames through nl80211 in both cfg80211 and mac80211. Also update a few places that I forgot to update for P2P-client mode previously, and fix a small bug with non-action frames in this API. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05nl80211: allow drivers to indicate whether the survey data channel is in useFelix Fietkau
Some user space applications only want to display survey data for the operating channel, however there is no API to get that yet. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05mac80211: fix rx monitor filter refcountersChristian Lamparter
This patch fixes an refcounting bug. Previously it was possible to corrupt the per-device recv. filter and monitor management counters when: iw dev wlanX set monitor [new flags] was issued on an active monitor interface. Acked-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05wireless: Use first phyX name available when registering phy devices.Ben Greear
Choose first available phyX name when creating phy devices. This means that reloading a wifi driver will not cause a change in the name of it's phy device. Also, allow users to rename a phy to any un-used name, including phy%d. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-10-05ipv6: make __ipv6_isatap_ifid staticstephen hemminger
Another exported symbol only used in one file Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05fib: fib_rules_cleanup can be staticstephen hemminger
fib_rules_cleanup_ups is only defined and used in one place. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05fib: cleanupsEric Dumazet
Code style cleanups before upcoming functional changes. C99 initializer for fib_props array. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05caif: remove duplicated includeNicolas Kaiser
Remove duplicated include. Signed-off-by: Nicolas Kaiser <nikai@nikai.net> Acked-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05cls_u32: signedness bugDan Carpenter
skb_headroom() is unsigned so "skb_headroom(skb) + toff" is also unsigned and can't be less than zero. This test was added in 66d50d25: "u32: negative offset fix" It was supposed to fix a regression. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05ipvs: Use frag walker helper in SCTP proto support.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Simon Horman <horms@verge.net.au>
2010-10-05net: dynamic ingress_queue allocationEric Dumazet
ingress being not used very much, and net_device->ingress_queue being quite a big object (128 or 256 bytes), use a dynamic allocation if needed (tc qdisc add dev eth0 ingress ...) dev_ingress_queue(dev) helper should be used only with RTNL taken. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-04Bluetooth: Disallow to change L2CAP_OPTIONS values when connectedGustavo F. Padovan
L2CAP doesn't permit change like MTU, FCS, TxWindow values while the connection is alive, we can only set that before the connection/configuration process. That can lead to bugs in the L2CAP operation. Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-04netfilter: unregister nf hooks, matches and targets in the reverse orderChangli Gao
Since we register nf hooks, matches and targets in order, we'd better unregister them in the reverse order. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-10-04netfilter: remove duplicated includeNicolas Kaiser
Remove duplicated include. Signed-off-by: Nicolas Kaiser <nikai@nikai.net> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-10-04Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/ipv4/Kconfig net/ipv4/tcp_timer.c
2010-10-04netfilter: ipt_LOG: add bufferisation to call printk() onceEric Dumazet
ipt_LOG & ip6t_LOG use lot of calls to printk() and use a lock in a hope several cpus wont mix their output in syslog. printk() being very expensive [1], its better to call it once, on a prebuilt and complete line. Also, with mixed IPv4 and IPv6 trafic, separate IPv4/IPv6 locks dont avoid garbage. I used an allocation of a 1024 bytes structure, sort of seq_printf() but with a fixed size limit. Use a static buffer if dynamic allocation failed. Emit a once time alert if buffer size happens to be too short. [1]: printk() has various features like printk_delay()... Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-10-04netfilter: nf_nat: make find/put staticStephen Hemminger
The functions nf_nat_proto_find_get and nf_nat_proto_put are only used internally in nf_nat_core. This might break some out of tree NAT module. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-10-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: vlan: dont drop packets from unknown vlans in promiscuous mode Phonet: Correct header retrieval after pskb_may_pull um: Proper Fix for f25c80a4: remove duplicate structure field initialization ip_gre: Fix dependencies wrt. ipv6. net-2.6: SYN retransmits: Add new parameter to retransmits_timed_out() iwl3945: queue the right work if the scan needs to be aborted mac80211: fix use-after-free
2010-10-04IPVS: sip persistence engineSimon Horman
Add the SIP callid as a key for persistence. This allows multiple connections from the same IP address to be differentiated on the basis of the callid. When used in conjunction with the persistence mask, it allows connections from different IP addresses to be aggregated on the basis of the callid. It is envisaged that a persistence mask of 0.0.0.0 will be a useful setting. That is, ignore the source IP address when checking for persistence. It is envisaged that this option will be used in conjunction with one-packet scheduling. This only works with UDP and cannot be made to work with TCP within the current framework. Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Julian Anastasov <ja@ssi.bg>
2010-10-04IPVS: Fallback if persistence engine failsSimon Horman
Fall back to normal persistence handling if the persistence engine fails to recognise a packet. This way, at least the packet will go somewhere. It is envisaged that iptables could be used to block packets such if this is not desired although nf_conntrack_sip would likely need to be enhanced first. Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Julian Anastasov <ja@ssi.bg>
2010-10-04IPVS: Allow configuration of persistence enginesSimon Horman
Allow the persistence engine of a virtual service to be set, edited and unset. This feature only works with the netlink user-space interface. Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Julian Anastasov <ja@ssi.bg>
2010-10-04IPVS: management of persistence engine modulesSimon Horman
This is based heavily on the scheduler management code Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Julian Anastasov <ja@ssi.bg>
2010-10-04IPVS: Add persistence engine data to /proc/net/ip_vs_connSimon Horman
This shouldn't break compatibility with userspace as the new data is at the end of the line. I have confirmed that this doesn't break ipvsadm, the main (only?) user-space user of this data. Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Julian Anastasov <ja@ssi.bg>
2010-10-04IPVS: Add struct ip_vs_peSimon Horman
Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Julian Anastasov <ja@ssi.bg>
2010-10-04IPVS: ip_vs_{un,}bind_scheduler NULL argumentsSimon Horman
In general NULL arguments aren't passed by the few callers that exist, so don't test for them. The exception is to make passing NULL to ip_vs_unbind_scheduler() a noop. Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Julian Anastasov <ja@ssi.bg>
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