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* Fix potential scheduling while atomic in mesh_path_add.Pavel Emelyanov2008-05-121-1/+2
| | | | | | | | | | Calling synchronize_rcu() under write-lock-ed pathtbl_resize_lock may result in this warning (and other side effects). It looks safe just dropping this lock before calling synchronize_rcu. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Fix not checked kmalloc() result.Pavel Emelyanov2008-05-121-1/+7
| | | | | | | | | | The new_node kmallocation is not checked for success, so add this check. BTW, it also happens under the read_lock. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Fix GFP_KERNEL allocation under read lock.Pavel Emelyanov2008-05-121-3/+3
| | | | | | | | | | | | The mesh_path_add() read-locks the pathtbl_resize_lock and calls kmalloc with GFP_KERNEL mask. Fix it and move the endadd2 label lower. It should be _before_ the if() beyond, but it makes no sense for it being there, so I move it right after this if(). Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: mesh hwmp: fix kfree(skb)Patrick McHardy2008-05-121-1/+1
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: fix access to null skbLuis Carlos Cobo2008-05-121-3/+3
| | | | | | | | | Without this patch, if xmit_skb is null but net_ratelimit() returns 0 we would go to the else branch and access the null xmit_skb. Pointed out by Johannes Berg. Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: fix incorrect mesh header lengthLuis Carlos Cobo2008-05-122-6/+6
| | | | | | | | This should have been updated at the same time we were transitioning from 3 byte to 4 byte mesh sequence number. Pointed out by Johannes Berg. Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: Don't encrypt beaconsIvo van Doorn2008-05-121-0/+1
| | | | | | | | | | mac80211 should set the IEEE80211_TX_CTL_DO_NOT_ENCRYPT flag in tx_control structure to inform drivers not to encrypt the beacon. Drivers that only check for that flag before accessing the hw_key field, will otherwise cause a NULL pointer dereference since that field is not configured for beacons. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Clean up error handling of PCI queue DMA allocation.Ivo van Doorn2008-05-121-2/+3
| | | | | | | | | | | | | | | | When, for some reason, the rt2x00pci module fails to allocate DMA memory for the queues, it tries to undo the complete initialization of the PCI device, including freeing of the irq. This results in the following error in dmesg, as the irq hadn't been requested yet: [ 78.123456] Trying to free already-free IRQ 17 Fix this by implementing proper error handling code, instead of just using the full uninitialization function. Signed-off-by: Gertjan van Wingerde <gwingerde@kpnplanet.nl> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Fix broken recover-on-error pathIvo van Doorn2008-05-121-7/+4
| | | | | | | | | | | | | | During initialization the initialize() callback function in rt2x00pci and rt2x00usb will cleanup the mess they made. rt2x00lib shouldn't call uninitialize because the callback function already cleaned up _and_ the DEVICE_INITIALIZED isn't set which causes the rt2x00lib_uninitialize() to halt directly anyway. All that is required to be cleaned up by rt2x00lib is the queue, and that can be done by calling rt2x00queue_uninitialize() directly. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* rt2x00: Don't use pskb_expand_head()Ivo van Doorn2008-05-121-20/+11
| | | | | | | | | | | | | | | | rt2x00pci allocates DMA for descriptor and data, rt61pci doesn't use this for the beacon, but it can use the descriptor part as temporary buffer instead of using pskb_expand_head(). Using this temporary buffer is obviously much better then reallocating the skb buffer... At the same time we can set the data length for the beacon queue at 0, to make sure no DMA is allocated for data (but just for the descriptor). Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* iwlwifi: fix compile error when CONFIG_MAC80211_DEBUGFS is not selectedZhu Yi2008-05-121-1/+1
| | | | | | | Make iwl4965_lq_sta->drv available even without CONFIG_MAC80211_DEBUGFS. Signed-off-by: Yi Zhu <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* mac80211: fix debugfs default key oopsJohannes Berg2008-05-121-3/+12
| | | | | | | | | | Under certain circumstances (in AP mode) the debugfs function that is supposed to add the default key symlink can encounter a NULL default_key pointer. This patch makes it handle that situtation gracefully. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wavelan: avoid index past end of array if DEBUG_SHOW_UNUSED is definedJohn W. Linville2008-05-122-6/+4
| | | | | | | | Reported by Daniel Marjamäki <danielm77@spray.se> here: http://bugzilla.kernel.org/show_bug.cgi?id=10588 Signed-off-by: John W. Linville <linville@tuxdriver.com>
* fix irq flags in mac80211 codeSteven Rostedt2008-05-121-2/+2
| | | | | | | | | | | | | A file in the net/mac80211 directory uses "int" for flags. This can cause hard to find bugs on some architectures. This patch converts the flags to use "long" instead. This bug was discovered by doing an allyesconfig make on the -rt kernel where checks are done to ensure all flags are of size sizeof(long). Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* prism54: fix regression with missing carrier in AP-modeLuis R. Rodriguez2008-05-121-2/+9
| | | | | | | | | This fixes a regression introduced by commit 7b463ced6 (prism54: set carrier flags correctly) which causes the device to come up without a carrier in AP-mode. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* sctp: Add address type check while process paramaters of ASCONF chunkWei Yongjun2008-05-121-0/+13
| | | | | | | | | | | | | If socket is create by AF_INET type, add IPv6 address to asoc will cause kernel panic while packet is transmitted on that transport. This patch add address type check before process paramaters of ASCONF chunk. If peer is not support this address type, return with error invald parameter. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sctp: Do not enable peer IPv6 address support on PF_INET socketWei Yongjun2008-05-121-1/+2
| | | | | | | | | | | If socket is create by PF_INET type, it can not used IPv6 address to send/recv DATA, So we can not used IPv6 address even if peer tell us it support IPv6 address. This patch fix to only enabled peer IPv6 address support on PF_INET6 socket. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* niu: Determine the # of ports from the card's VPD dataMatheos Worku2008-05-122-32/+30
| | | | | | | | | | | | Determine the number of physical ports from the card's VPD data. Previous fix failed on Maramba platform which doesn't have the "board-model" property. This fix uses the "model" property which exists on all cards and Neptune based motherboards. cstyle cleanup included. Signed-off-by: Matheos Worku <matheos.worku@sun.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* sit: Add missing kfree_skb() on pskb_may_pull() failure.David S. Miller2008-05-081-1/+1
| | | | | | Noticed by Paul Marks <paul@pmarks.net>. Signed-off-by: David S. Miller <davem@davemloft.net>
* tipc: Increase buffer header to support worst-case deviceAllan Stephens2008-05-081-6/+5
| | | | | | | | This patch increases the headroom TIPC reserves in each sk_buff to accommodate the largest possible link level device header. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Added ASSERT_RTNL() to dev_open() and dev_close().Ben Hutchings2008-05-081-0/+4
| | | | | | | | dev_open() and dev_close() must be called holding the RTNL, since they call device functions and netdevice notifiers that are promised the RTNL. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* can: Fix can_send() handling on dev_queue_xmit() failuresOliver Hartkopp2008-05-081-4/+12
| | | | | | | | | | | | The tx packet counting and the local loopback of CAN frames should only happen in the case that the CAN frame has been enqueued to the netdevice tx queue successfully. Thanks to Andre Naujoks <nautsch@gmail.com> for reporting this issue. Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net> Signed-off-by: Urs Thuermann <urs@isnogud.escape.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'upstream-davem' of ↵David S. Miller2008-05-0832-390/+1193
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
| * e1000e: don't return half-read eeprom on errorKok, Auke2008-05-061-1/+5
| | | | | | | | | | | | | | | | | | On a read error, e1000e might have returned uninitialized block of eeprom data back to userspace. The convention is that 0xff is "empty", so mark the entire eeprom as empty in case of an error. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * ucc_geth: Don't use RX clock as TX clock.Joakim Tjernlund2008-05-061-1/+1
| | | | | | | | | | | | | | | | | | | | Commit 9fb1e350e16164d56990dde036ae9c0a2fd3f634, ucc_geth: use rx-clock-name and tx-clock-name device tree properties Introduced a typo that made the driver use the RX clock as TX clock, causing massive TX errors. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * cxgb3: Use CAP_SYS_RAWIO for firmwareAlan Cox2008-05-061-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Otherwise theoretically at least CAP_NET_ADMIN Reload new firmware Wait.. Firmware patches kernel So it should be CAY_SYS_RAWIO - not that I suspect this is in fact a credible attack vector! Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pcnet32: delete non NAPI code from driver.Don Fry2008-05-062-71/+4
| | | | | | | | | | | | | | | | Delete the non-napi code from the driver and Kconfig. Tested x86_64. Apply at next open opportunity. Signed-off-by: Don Fry <pcnet32@verizon.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * fs_enet: Fix a memory leak in fs_enet_mdio_probeScott Wood2008-05-061-1/+2
| | | | | | | | | | | | | | | | | | | | | | There are more memory leaks in the !PPC_CPM_NEW_BINDING case, but that code will disappear soon along with arch/ppc. Reported by Daniel Marjamki <danielm77@spray.se> at http://bugzilla.kernel.org/show_bug.cgi?id=10591 Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [netdrvr] eexpress: IPv6 fails - multicast problemsBruce Robson2008-05-061-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Taken from http://bugzilla.kernel.org/show_bug.cgi?id=10577 I was unable to access a computer containing an Intel EtherExpress 16 network card using IPv6. I traced this to failure of neighbour discovery. When I used an "ip -6 neigh add" command, on the computer attempting access, to insert a binding between the IPv6 address of the computer with the Intel EtherExpress 16 network card and the card's ethernet address, I was able to access that computer using IPv6. Neighbour discovery requires working multicast. The driver sources file eexpress.c contains an approximately 30 line function eexp_setup_filter used when loading multicast addresses. I found 3 problems in this function 1) It wrote the number of multicast addresses to the card instead of the number of bytes in the multicast addresses. 2) When loading multiple multicast addresses it loaded the first one provided multiple times instead of loading each one once. 3) The setting of pointer 'data' from 'dmi->dmi_addr' occured before the test for the error situation of 'dmi' being NULL. Correcting these problems allows the computer with the Intel EtherExpress 16 network card to found by IPv6 neighbour discovery. p.s. There is some information on the Intel EtherExpress 16 at http://www.intel.com/support/etherexpress/vintage/sb/cs-013500.htm Datasheet for the Intel 82586 ethernet controller used by the card http://www.datasheetcatalog.com/datasheets_pdf/8/2/5/8/82586.shtml Signed-off-by: Bruce Robson <bns_robson@hotmail.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * 3c59x: use netstats in net_device structurePaulius Zaleckas2008-05-061-36/+35
| | | | | | | | | | | | | | | | Use net_device_stats from net_device structure instead of local. Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt> Acked-by: Steffen Klassert <klassert@mathematik.tu-chemnitz.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * 3c980-TX needs EXTRA_PREAMBLEGunnar Larisch2008-05-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | The ethernet card 3c980-TX needs a mdio_sync() to initialize the ethernet properly. This is forced by adding an EXTRA_PREAMBLE to its drv_flags. Without this, the driver did not reconnect after a link loss. Signed-off-by: Gunnar Larisch <Gunnar.Larisch@gmx.de> Acked-by: Steffen Klassert <klassert@mathematik.tu-chemnitz.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * Merge branch 'for-2.6.26' of ↵Jeff Garzik2008-05-066-39/+148
| |\ | | | | | | | | | git://git.farnsworth.org/dale/linux-2.6-mv643xx_eth into upstream
| | * mv643xx_eth: inter-mv643xx SMI port sharingLennert Buytenhek2008-04-282-16/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There exist chips with up to four mv643xx_eth silicon blocks but only one external SMI (MII management) interface -- the SMI logic of the first block is shared by all the blocks. Handle this by allowing a per-port override of which mv643xx_eth_shared's SMI registers (and spinlock) to use. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Acked-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
| | * mv643xx_eth: shorten shared platform driver nameLennert Buytenhek2008-04-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change the MV643XX_ETH_SHARED_NAME platform driver name to something shorter than 19 characters, so that we can register multiple (otherwise we end up with sysfs conflicts since all instances will map to "mv643xx_eth_shared." as there is a 20-char sysfs file name limit.) Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Acked-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
| | * mv643xx_eth: configurable t_clkLennert Buytenhek2008-04-282-8/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make t_clk configurable via platform device data (with the current hardcoded value, 133 MHz, being the default), as it varies across different chip families. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Acked-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
| | * mv643xx_eth: mbus decode window supportLennert Buytenhek2008-04-282-0/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make it possible to pass mbus_dram_target_info to the mv643xx_eth driver via the platform data, and make the mv643xx_eth driver program the window registers based on this data if it is passed in. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Reviewed-by: Tzachi Perelstein <tzachi@marvell.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
| | * mv643xx_eth: get rid of static variables, allow multiple instancesLennert Buytenhek2008-04-286-17/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move mv643xx_eth's static state (ethernet register block base address and MII management interface spinlock) into a struct hanging off the shared platform device. This is necessary to support chips that contain multiple mv643xx_eth silicon blocks. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Acked-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
| * | fix warning in drivers/net/appletalk/cops.cJeff Garzik2008-05-061-11/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/net/appletalk/cops.c: In function ‘cops_reset’: drivers/net/appletalk/cops.c:507: warning: comparison of distinct pointer types lacks a cast by replacing hand-woven msleep() with call to msleep() Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | e1000e: Add support for BM PHYs on ICH9Bruce Allan2008-05-067-21/+748
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for the BM PHY, a new PHY model being used on ICH9-based implementations. This new PHY exposes issues in the ICH9 silicon when receiving jumbo frames large enough to use more than a certain part of the Rx FIFO, and this unfortunately breaks packet split jumbo receives. For this reason we re-introduce (for affected adapters only) the jumbo single-skb receive routine back so that people who do wish to use jumbo frames on these ich9 platforms can do so. Part of this problem has to do with CPU sleep states and to make sure that all the wake up timings are correctly we force them with the recently merged pm_qos infrastructure written by Mark Gross. (See http://lkml.org/lkml/2007/10/4/400). To make code read a bit easier we introduce a _IS_ICH flag so that we don't need to do mac type checks over the code. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | uli526x: fix endianness issues in the setup frameAnton Vorontsov2008-05-061-12/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes uli526x driver's issues on a PowerPC boards: uli chip is unable to receive the packets. It appears that send_frame_filter prepares the setup frame in the endianness unsafe manner. On a big endian machines we should shift the address nibble by two bytes. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | uli526x: initialize the hardware prior to requesting interruptsAnton Vorontsov2008-05-061-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The firmware on MPC8610HPCD boards enables ULI ethernet and leaves it in some funky state before booting Linux. For drivers, it's always good idea to (re)initialize the hardware prior to requesting interrupts. This patch fixes the following oops: Oops: Kernel access of bad area, sig: 11 [#1] MPC86xx HPCD NIP: c0172820 LR: c017287c CTR: 00000000 [...] NIP [c0172820] allocate_rx_buffer+0x2c/0xb0 LR [c017287c] allocate_rx_buffer+0x88/0xb0 Call Trace: [df82bdc0] [c017287c] allocate_rx_buffer+0x88/0xb0 (unreliable) [df82bde0] [c0173000] uli526x_interrupt+0xe4/0x49c [df82be20] [c0045418] request_irq+0xf0/0x114 [df82be50] [c01737b0] uli526x_open+0x48/0x160 [df82be70] [c0201184] dev_open+0xb0/0xe8 [df82be80] [c0200104] dev_change_flags+0x90/0x1bc [df82bea0] [c035fab0] ip_auto_config+0x214/0xef4 [df82bf60] [c03421c8] kernel_init+0xc4/0x2ac [df82bff0] [c0010834] kernel_thread+0x44/0x60 Instruction dump: 4e800020 9421ffe0 7c0802a6 bfa10014 7c7e1b78 90010024 80030060 83e30054 2b80002f 419d0078 3fa0c039 48000058 <907f0010> 80630088 2f830000 419e0014 Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | ucc_geth: Fix a bunch of sparse warningsAndy Fleming2008-05-064-160/+174
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ucc_geth didn't have anything marked as __iomem. It was also inconsistent with its use of in/out accessors (using them sometimes, not using them other times). Cleaning this up cuts the warnings down from hundreds to just over a dozen. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | phylib: Fix some sparse warningsAndy Fleming2008-05-062-1/+6
| | | | | | | | | | | | | | | | | | | | | Declared some things static, declared some things in the header. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | gianfar: Fix a locking bug in gianfar's sysfs codeAndy Fleming2008-05-063-6/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | During sparse cleanup, found a locking bug. Some of the sysfs functions were acquiring a lock, and then returning in the event of an error. We rearrange the code so that the lock is released in error conditions, too. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | bonding: fix enslavement error unwindsJay Vosburgh2008-05-061-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As part of: commit c2edacf80e155ef54ae4774379d461b60896bc2e Author: Jay Vosburgh <fubar@us.ibm.com> Date: Mon Jul 9 10:42:47 2007 -0700 bonding / ipv6: no addrconf for slaves separately from master two steps were rearranged in the enslavement process: netdev_set_master is now before the call to dev_open to open the slave. This patch updates the error cases and unwind process at the end of bond_enslave to match the new order. Without this patch, it is possible for the enslavement to fail, but leave the slave with IFF_SLAVE set in its flags. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | bonding: Deadlock between bonding_store_bonds and bond_destroy_sysfs.Pavel Emelyanov2008-05-061-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sysfs layer has an internal protection, that ensures, that all the process sitting inside ->sore/->show callback exits before the appropriate entry is unregistered (the calltraces are rather big, but I can provide them if required). On the other hand, bonding takes rtnl_lock in a) the bonding_store_bonds, i.e. in ->store callback, b) module exit before calling the sysfs unregister routines. Thus, the classical AB-BA deadlock may occur. To reproduce run # while :; do modprobe bonding; rmmod bonding; done and # while :; do echo '+bond%d' > /sys/class/net/bonding_masters ; done in parallel. The fix is to move the bond_destroy_sysfs out of the rtnl_lock, but _before_ bond_free_all to make sure no bonding devices exist after module unload. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | bonding: fix error unwind in bonding_store_bondsJay Vosburgh2008-05-061-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixed an error unwind in bonding_store_bonds that didn't release the locks it held, and consolidated unwinds into a common block at the end of the function. Bug reported by Pavel Emelyanov <xemul@openvz.org>, who provided a different fix. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | bonding: Do not call free_netdev for already registered device.Pavel Emelyanov2008-05-061-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the call to bond_create_sysfs_entry in bond_create fails, the proper rollback is to call unregister_netdevice, not free_netdev. Otherwise - kernel BUG at net/core/dev.c:4057! Checked with artificial failures injected into bond_create_sysfs_entry. Pavel's original patch modified by Jay Vosburgh to move code around for clarity (remove goto-hopping within the unwind block). Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | | netns: Fix arbitrary net_device-s corruptions on net_ns stop.Pavel Emelyanov2008-05-081-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a net namespace is destroyed, some devices (those, not killed on ns stop explicitly) are moved back to init_net. The problem, is that this net_ns change has one point of failure - the __dev_alloc_name() may be called if a name collision occurs (and this is easy to trigger). This allocator performs a likely-to-fail GFP_ATOMIC allocation to find a suitable number. Other possible conditions that may cause error (for device being ns local or not registered) are always false in this case. So, when this call fails, the device is unregistered. But this is *not* the right thing to do, since after this the device may be released (and kfree-ed) improperly. E. g. bridges require more actions (sysfs update, timer disarming, etc.), some other devices want to remove their private areas from lists, etc. I. e. arbitrary use-after-free cases may occur. The proposed fix is the following: since the only reason for the dev_change_net_namespace to fail is the name generation, we may give it a unique fall-back name w/o %d-s in it - the dev<ifindex> one, since ifindexes are still unique. So make this change, raise the failure-case printk loglevel to EMERG and replace the unregister_netdevice call with BUG(). [ Use snprintf() -DaveM ] Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | netfilter: Kconfig: default DCCP/SCTP conntrack support to the protocol ↵Patrick McHardy2008-05-081-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | config values When conntrack and DCCP/SCTP protocols are enabled, chances are good that people also want DCCP/SCTP conntrack and NAT support. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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