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2009-04-13Bonding: fix zero address hole bug in arp_ip_target listBrian Haley
Fix a zero address hole bug in the bonding arp_ip_target list that was causing the bond to ignore ARP replies (bugz 13006). Instead of just setting the array entry to zero, we now copy any additional entries down one slot, putting the zero entry at the end. With this change we can now have all the loops that walk the array stop when they hit a zero since there will be no addresses after it. Changes are based in part on code fragment provided in kernel: bugzilla 13006: http://bugzilla.kernel.org/show_bug.cgi?id=13006 by Steve Howard <steve@astutenetworks.com> Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-31proc 2/2: remove struct proc_dir_entry::ownerAlexey Dobriyan
Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy as correctly noted at bug #12454. Someone can lookup entry with NULL ->owner, thus not pinning enything, and release it later resulting in module refcount underflow. We can keep ->owner and supply it at registration time like ->proc_fops and ->data. But this leaves ->owner as easy-manipulative field (just one C assignment) and somebody will forget to unpin previous/pin current module when switching ->owner. ->proc_fops is declared as "const" which should give some thoughts. ->read_proc/->write_proc were just fixed to not require ->owner for protection. rmmod'ed directories will be empty and return "." and ".." -- no harm. And directories with tricky enough readdir and lookup shouldn't be modular. We definitely don't want such modular code. Removing ->owner will also make PDE smaller. So, let's nuke it. Kudos to Jeff Layton for reminding about this, let's say, oversight. http://bugzilla.kernel.org/show_bug.cgi?id=12454 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-03-25bonding: select current active slave when enslaving device for mode tlb and albJiri Pirko
I've hit an issue on my system when I've been using RealTek RTL8139D cards in bonding interface in mode balancing-alb. When I enslave a card, the current active slave (bond->curr_active_slave) is not set and the link is therefore not functional. ---- # cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.5.0 (November 4, 2008) Bonding Mode: adaptive load balancing Primary Slave: None Currently Active Slave: None MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth1 MII Status: up Link Failure Count: 0 Permanent HW addr: 00:1f:1f:01:2f:22 ---- The thing that gets it right is when I unplug the cable and then I put it back into the NIC. Then the current active slave is set to eth1 and link is working just fine. Here is dmesg log with bonding DEBUG messages turned on: ---- ADDRCONF(NETDEV_UP): bond0: link is not ready event_dev: bond0, event: 1 IFF_MASTER event_dev: bond0, event: 8 IFF_MASTER bond_ioctl: master=bond0, cmd=35216 slave_dev=cac5d800: slave_dev->name=eth1: eth1: ! NETIF_F_VLAN_CHALLENGED event_dev: eth1, event: 8 eth1: link up, 100Mbps, full-duplex, lpa 0xC5E1 event_dev: eth1, event: 1 event_dev: eth1, event: 8 IFF_SLAVE Initial state of slave_dev is BOND_LINK_UP bonding: bond0: enslaving eth1 as an active interface with an up link. ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready event_dev: bond0, event: 4 IFF_MASTER bond0: no IPv6 routers present <<<<cable unplug>>>> eth1: link down event_dev: eth1, event: 4 IFF_SLAVE bonding: bond0: link status definitely down for interface eth1, disabling it event_dev: bond0, event: 4 IFF_MASTER <<<<cable plug>>>> eth1: link up, 100Mbps, full-duplex, lpa 0xC5E1 event_dev: eth1, event: 4 IFF_SLAVE bonding: bond0: link status definitely up for interface eth1. bonding: bond0: making interface eth1 the new active one. event_dev: eth1, event: 8 IFF_SLAVE event_dev: eth1, event: 8 IFF_SLAVE bonding: bond0: first active interface up! event_dev: bond0, event: 4 IFF_MASTER ---- The current active slave is set by calling bond_select_active_slave() function from bond_miimon_commit() function when the slave (eth1) link goes to state up. I also tested this on other machine with Broadcom NetXtreme II BCM5708 1000Base-T NIC and there all works fine. The thing is that this adapter is down and goes up after few seconds after it is enslaved. This patch calls bond_select_active_slave() in bond_enslave() function for modes alb and tlb and makes sure that the current active slave is set up properly even when the slave state is already up. Tested on both systems, works fine. Notice: The same problem can maybe also occrur in mode 8023AD but I'm unable to test that. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-20Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/virtio_net.c
2009-03-18bonding: Fix updating of speed/duplex changesJay Vosburgh
This patch corrects an omission from the following commit: commit f0c76d61779b153dbfb955db3f144c62d02173c2 Author: Jay Vosburgh <fubar@us.ibm.com> Date: Wed Jul 2 18:21:58 2008 -0700 bonding: refactor mii monitor The un-refactored code checked the link speed and duplex of every slave on every pass; the refactored code did not do so. The 802.3ad and balance-alb/tlb modes utilize the speed and duplex information, and require it to be kept up to date. This patch adds a notifier check to perform the appropriate updating when the slave device speed changes. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-05Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/tokenring/tmspci.c drivers/net/ucc_geth_mii.c
2009-03-05bonding: Fix device passed into ->ndo_neigh_setup().Patrick McHardy
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-17drivers/net/bonding: fix sparse warning: symbol shadows an earlier oneHannes Eder
Impact: Rename function scope variable. Fix this sparse warning: drivers/net/bonding/bond_main.c:4704:13: warning: symbol 'mode' shadows an earlier one drivers/net/bonding/bond_main.c:95:13: originally declared here Signed-off-by: Hannes Eder <hannes@hanneseder.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-17drivers/net/bonding: fix sparse warnings: context imbalanceHannes Eder
Impact: Attribute functions with __acquires(...) and/or __releases(...). Fix this sparse warnings: drivers/net/bonding/bond_alb.c:1675:9: warning: context imbalance in 'bond_alb_handle_active_change' - unexpected unlock drivers/net/bonding/bond_alb.c:1742:9: warning: context imbalance in 'bond_alb_set_mac_address' - unexpected unlock drivers/net/bonding/bond_main.c:1025:17: warning: context imbalance in 'bond_do_fail_over_mac' - unexpected unlock drivers/net/bonding/bond_main.c:3195:13: warning: context imbalance in 'bond_info_seq_start' - wrong count at exit drivers/net/bonding/bond_main.c:3234:13: warning: context imbalance in 'bond_info_seq_stop' - unexpected unlock Signed-off-by: Hannes Eder <hannes@hanneseder.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01net: replace uses of __constant_{endian}Harvey Harrison
Base versions handle constant folding now. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-21net: constify VFTsJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-06bonding: use net_device_opsStephen Hemminger
Use the correct pointer in debug message. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26802.3ad: use standard ethhdr instead of ad_headerHolger Eitzenberger
802.3ad has its own ethhdr-like structure in the form of an ad_header, which is at the start of both the LACPDU and marker PDU. Both are the same from the struct values, both are packed as well. It's therefore perfectly fine to replace the ad_header by the ethhdr and to remove its definition. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26802.3ad: generalize out mac address initializerHolger Eitzenberger
Generalize out mac address initializer for the LACPDU multicast address and use in two places. Remove the now unused AD_MULTICAST_LACPDU_ADDR. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26802.3ad: initialize ports LACPDU from const initializerHolger Eitzenberger
Save some text by initializing ports LACPDU from const initializer, then get rid of ad_initialize_lacpdu(). Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26802.3ad: remove typedef around ad_systemHolger Eitzenberger
As typedefs are considered a bad thing most of the time remove the typedef around ad_system. Signed-off-by: Holger Eitzenberger <heitzenberger@astaro.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26802.3ad: turn ports is_individual into a boolHolger Eitzenberger
Turn ports is_individual into a bool. There is no functional change. Signed-off-by: Holger Eitzenberger <heitzenberger@astaro.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26802.3ad: turn ports is_enabled into a boolHolger Eitzenberger
Turn ports is_enabled into a bool. There is no functional change. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26802.3ad: make ntt boolHolger Eitzenberger
Turn Need-To-Transmit port variable into a bool. There is no functional change. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-25drivers/net/bonding: fix sparse warnings: move decls to header fileHannes Eder
Fix this sparse warnings: drivers/net/bonding/bond_main.c:104:20: warning: symbol 'bonding_defaults' was not declared. Should it be static? drivers/net/bonding/bond_main.c:204:22: warning: symbol 'ad_select_tbl' was not declared. Should it be static? drivers/net/bonding/bond_sysfs.c:60:21: warning: symbol 'bonding_rwsem' was not declared. Should it be static? Signed-off-by: Hannes Eder <hannes@hanneseder.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17bonding: use port_params in __update_lacpdu_from_portHolger Eitzenberger
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17bonding: use port_params in __update_default_selected()Holger Eitzenberger
I also removed some of the unneeded braces in the if condition to improve readability and a little bit of reformatting. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17bonding: use port_params in __update_selected()Holger Eitzenberger
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17bonding: remove various function declarationsHolger Eitzenberger
They are all defined before used, it's therefore ok to remove them. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17bonding: init port_params from templateHolger Eitzenberger
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17bonding: use plain memcpy in __record_default()Holger Eitzenberger
Also remove the pointless comment at the top. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17bonding: use port_params in __record_pdu()Holger Eitzenberger
It helps in maintaining the various partner information values from the LACPDU. It also removes the pointless comment at the top. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17bonding: introduce and use port_params structureHolger Eitzenberger
It generally helps to handle those values in various places, using it might make the code more readable and gives room for other improvements. The IEEE standard talks about them as "parameter values". Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-17bonding: improve elaborate port_state assignmentHolger Eitzenberger
The previous code was just a funny way of assigning both values (they are both of type u8). Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-09bonding: turn all bond_parm_tbls constHolger Eitzenberger
Turn all bond_parm_tbls const. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-09bonding: make tbl argument to bond_parse_parm() constHolger Eitzenberger
bond_parse_parm() parses a parameter table for a particular value and is therefore not modifying the table at all. Therefore make the 2nd argument const, thus allowing to make the tables const later. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-09bonding: remove duplicate declarationsHolger Eitzenberger
Remove some declarations from bonding.c as they are declared in bonding.h already. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-09bonding: use pr_debug instead of own macrosHolger Eitzenberger
Use pr_debug() instead of own macros. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-09bonding: fix compile error if debug enabledHolger Eitzenberger
This is what I get if debug is enabled: drivers/net/bonding/bond_ipv6.c: In function 'bond_na_send': drivers/net/bonding/bond_ipv6.c:75: error: 'slave' undeclared (first use in this function) drivers/net/bonding/bond_ipv6.c:75: error: (Each undeclared identifier is reported only once drivers/net/bonding/bond_ipv6.c:75: error: for each function it appears in.) This patch fixes that. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-09bonding: use table for mode namesHolger Eitzenberger
Use a small array in bond_mode_name() for the names, thus saving some space: before text data bss dec hex filename 57736 9372 344 67452 1077c drivers/net/bonding/bonding.ko after text data bss dec hex filename 57441 9372 344 67157 10655 drivers/net/bonding/bonding.ko Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-09bonding: add and use bond_is_lb()Holger Eitzenberger
Introduce and use bond_is_lb(), it is usefull to shorten the repetitive check for either ALB or TLB mode. Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03bond: Kill directly reference of netdev->privWang Chen
Simply replace netdev->priv with netdev_priv(). Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-20netdev: add more functions to netdevice opsStephen Hemminger
This patch moves neigh_setup and hard_start_xmit into the network device ops structure. For bisection, fix all the previously converted drivers as well. Bonding driver took the biggest hit on this. Added a prefetch of the hard_start_xmit in the fast path to try and reduce any impact this would have. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19bonding: convert to net_device_opsStephen Hemminger
Convert to net_device_ops table. Note: for some operations move error checking into generic networking layer (rather than looking at pointers in bonding). A couple of gratituous style cleanups to get rid of extra {} Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19netdev: introduce dev_get_stats()Stephen Hemminger
In order for the network device ops get_stats call to be immutable, the handling of the default internal network device stats block has to be changed. Add a new helper function which replaces the old use of internal_get_stats. Note: change return code to make it clear that the caller should not go changing the returned statistics. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-12netdevice: safe convert to netdev_priv() #part-1Wang Chen
We have some reasons to kill netdev->priv: 1. netdev->priv is equal to netdev_priv(). 2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously netdev_priv() is more flexible than netdev->priv. But we cann't kill netdev->priv, because so many drivers reference to it directly. This patch is a safe convert for netdev->priv to netdev_priv(netdev). Since all of the netdev->priv is only for read. But it is too big to be sent in one mail. I split it to 4 parts and make every part smaller than 100,000 bytes, which is max size allowed by vger. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-06bonding: alternate agg selection policies for 802.3adJay Vosburgh
This patch implements alternative aggregator selection policies for 802.3ad. The existing policy, now termed "stable," selects the active aggregator by greatest bandwidth, and only reselects a new aggregator if the active aggregator is entirely disabled (no more ports or all ports down). This patch adds two new policies: bandwidth and count, selecting the active aggregator by total bandwidth (like the stable policy) or by the number of ports in the aggregator, respectively. These two policies also differ from the stable policy in that they will reselect the active aggregator when availability-related changes occur in the bond (e.g., link state change). This permits "gang failover" within 802.3ad, allowing redundant aggregators along parallel paths to always maintain the "best" aggregator as the active aggregator (rather than having to wait for the active to entirely fail). This patch also updates the driver version to 3.5.0. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-06bonding: Fix ALB mode to balance traffic on VLANsJay Vosburgh
The current ALB function that processes incoming ARPs does not handle traffic for VLANs configured above bonding. This causes traffic on those VLANs to all be assigned the same slave. This patch corrects that misbehavior by locating the bonding interface nested below the VLAN interface. Bug reported by Sven Anders <anders@anduras.de>, who also tested an earlier version of this patch and confirmed that it resolved the problem. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-06bonding: send IPv6 neighbor advertisement on failoverBrian Haley
This patch adds better IPv6 failover support for bonding devices, especially when in active-backup mode and there are only IPv6 addresses configured, as reported by Alex Sidorenko. - Creates a new file, net/drivers/bonding/bond_ipv6.c, for the IPv6-specific routines. Both regular bonds and VLANs over bonds are supported. - Adds a new tunable, num_unsol_na, to limit the number of unsolicited IPv6 Neighbor Advertisements that are sent on a failover event. Default is 1. - Creates two new IPv6 neighbor discovery functions: ndisc_build_skb() ndisc_send_skb() These were required to support VLANs since we have to be able to add the VLAN id to the skb since ndisc_send_na() and friends shouldn't be asked to do this. These two routines are basically __ndisc_send() split into two pieces, in a slightly different order. - Updates Documentation/networking/bonding.txt and bumps the rev of bond support to 3.4.0. On failover, this new code will generate one packet: - An unsolicited IPv6 Neighbor Advertisement, which helps the switch learn that the address has moved to the new slave. Testing has shown that sending just the NA results in pretty good behavior when in active-back mode, I saw no lost ping packets for example. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-03bonding, net: Move last_rx update into bonding recv logicJay Vosburgh
The only user of the net_device->last_rx field is bonding. This patch adds a conditional update of last_rx to the bonding special logic in skb_bond_should_drop, causing last_rx to only be updated when the ARP monitor is running. This frees network device drivers from the necessity of updating last_rx, which can have cache line thrash issues. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-31drivers: replace NIPQUAD()Harvey Harrison
Using NIPQUAD() with NIPQUAD_FMT, %d.%d.%d.%d or %u.%u.%u.%u can be replaced with %pI4 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-31Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/p54/p54common.c
2008-10-31bonding: fix panic when taking bond interface down before removing moduleAndy Gospodarek
A panic was discovered with bonding when using mode 5 or 6 and trying to remove the slaves from the bond after the interface was taken down. When calling 'ifconfig bond0 down' the following happens: bond_close() bond_alb_deinitialize() tlb_deinitialize() kfree(bond_info->tx_hashtbl) bond_info->tx_hashtbl = NULL Unfortunately if there are still slaves in the bond, when removing the module the following happens: bonding_exit() bond_free_all() bond_release_all() bond_alb_deinit_slave() tlb_clear_slave() tx_hash_table = BOND_ALB_INFO(bond).tx_hashtbl u32 next_index = tx_hash_table[index].next As you might guess we panic when trying to access a few entries into the table that no longer exists. I experimented with several options (like moving the calls to tlb_deinitialize somewhere else), but it really makes the most sense to be part of the bond_close routine. It also didn't seem logical move tlb_clear_slave around too much, so the simplest option seems to add a check in tlb_clear_slave to make sure we haven't already wiped the tx_hashtbl away before searching for all the non-existent hash-table entries that used to point to the slave as the output interface. Signed-off-by: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-31bonding: Clean up resource leaksJay Vosburgh
This patch reworks the resource free logic performed at the time a bonding device is released. This (a) closes two resource leaks, one for workqueues and one for multicast lists, and (b) improves commonality of code between the "destroy one" and "destroy all" paths by performing final free activity via destructor instead of explicitly (and differently) in each path. "Sean E. Millichamp" <sean@bruenor.org> reported the workqueue leak, and included a different patch. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-31bonding: fix miimon failure counterJay Vosburgh
During the rework of the mii monitor for: commit f0c76d61779b153dbfb955db3f144c62d02173c2 Author: Jay Vosburgh <fubar@us.ibm.com> Date: Wed Jul 2 18:21:58 2008 -0700 bonding: refactor mii monitor I left out the increment of the link failure counter. This patch corrects that omission. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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