Anton Blanchard [Thu, 4 Aug 2011 14:07:38 +0000 (14:07 +0000)]
net: sendmmsg should only return an error if no messages were sent
sendmmsg uses a similar error return strategy as recvmmsg but it
turns out to be a confusing way to communicate errors.
The current code stores the error code away and returns it on the next
sendmmsg call. This means a call with completely valid arguments could
get an error from a previous call.
Change things so we only return an error if no datagrams could be sent.
If less than the requested number of messages were sent, the application
must retry starting at the first failed one and if the problem is
persistent the error will be returned.
This matches the behaviour of other syscalls like read/write - it
is not an error if less than the requested number of elements are sent.
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable <stable@kernel.org> [3.0+]
Signed-off-by: David S. Miller <davem@davemloft.net>
Tord Andersson [Wed, 3 Aug 2011 22:11:47 +0000 (22:11 +0000)]
macb: restore wrap bit when performing underrun cleanup
When TX underrun occurs, a cleanup is performed that marks all buffers
as used. As a side effect it also clears the wrap bit in the last
buffer. This patch will restore the wrap bit.
Signed-off-by: Tord Andersson <tord.andersson@endian.se>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Giuseppe Scrivano [Wed, 3 Aug 2011 22:10:29 +0000 (22:10 +0000)]
cdc_ncm: fix endianness problem.
Fix a misusage of the struct usb_cdc_notification to pass arguments to the
usb_control_msg function. The usb_control_msg function expects host endian
arguments but usb_cdc_notification stores these values as little endian.
Now usb_control_msg is directly invoked with host endian values.
Signed-off-by: Giuseppe Scrivano <giuseppe@southpole.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Mason [Wed, 3 Aug 2011 06:42:42 +0000 (06:42 +0000)]
irda: use PCI_VENDOR_ID_*
Use PCI_VENDOR_ID_* from pci_ids.h instead of creating #define locally.
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yevgeny Petrilin [Wed, 3 Aug 2011 23:38:59 +0000 (16:38 -0700)]
mlx4: Fixing Ethernet unicast packet steering
For older FW versions, fixing the usage of per port Mac table.
For each port we must define the base QP number, which is passed
to the HW.
Setting the correct value in SET_PORT FW command to enable the steering.
Reported-by: Roland Dreier <roland@purestorage.com>
Tested-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 3 Aug 2011 23:36:41 +0000 (16:36 -0700)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless
John W. Linville [Wed, 3 Aug 2011 13:18:21 +0000 (09:18 -0400)]
Merge git://git./linux/kernel/git/linville/wireless-next into for-davem
Eric Dumazet [Fri, 29 Jul 2011 19:00:53 +0000 (19:00 +0000)]
net: fix NULL dereferences in check_peer_redir()
Gergely Kalman reported crashes in check_peer_redir().
It appears commit
f39925dbde778 (ipv4: Cache learned redirect
information in inetpeer.) added a race, leading to possible NULL ptr
dereference.
Since we can now change dst neighbour, we should make sure a reader can
safely use a neighbour.
Add RCU protection to dst neighbour, and make sure check_peer_redir()
can be called safely by different cpus in parallel.
As neighbours are already freed after one RCU grace period, this patch
should not add typical RCU penalty (cache cold effects)
Many thanks to Gergely for providing a pretty report pointing to the
bug.
Reported-by: Gergely Kalman <synapse@hippy.csoma.elte.hu>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Tue, 2 Aug 2011 23:00:12 +0000 (23:00 +0000)]
bnx2x: Clear MDIO access warning during first driver load
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Tue, 2 Aug 2011 23:00:06 +0000 (23:00 +0000)]
bnx2x: Fix BCM578xx MAC test
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Tue, 2 Aug 2011 23:00:00 +0000 (23:00 +0000)]
bnx2x: Fix BCM54618se invalid link indication
After resetting BCM54618se, link partner would still see link since the PHY wasn't put into low-power state.
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Tue, 2 Aug 2011 22:59:53 +0000 (22:59 +0000)]
bnx2x: Fix BCM84833 link
BCM84833 fail to link due to incorrect auto-negotiation setting.
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Tue, 2 Aug 2011 22:59:47 +0000 (22:59 +0000)]
bnx2x: Fix link issue with DAC over 578xx
Fix no-link issue on BCM578xx when direct attached cable is connected since Warpcore microcode restart was missing to re-read the new mode.
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Tue, 2 Aug 2011 22:59:40 +0000 (22:59 +0000)]
bnx2x: Fix LED behavior
This fix resolve two problems seen regarding LED:
1. LED doesn't flash during port identification.
2. Traffic LED sometimes do not blink.
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Tue, 2 Aug 2011 22:59:32 +0000 (22:59 +0000)]
bnx2x: Fix BCM578xx-B0 MDIO access
Fix MDIO access to Warpcore on new chip version of 578xx.
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Tue, 2 Aug 2011 22:59:25 +0000 (22:59 +0000)]
bnx2x: Fix remote fault handling
Fix couple of issues of remote fault detection and handling:
Link may go down due to remote fault indications during link establishment.
Possible link down after primary function migration.
Remote fault was not detected on 578xx.
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Tue, 2 Aug 2011 22:59:18 +0000 (22:59 +0000)]
bnx2x: Fix chip hanging due to TX pipe stall.
Fix a problem in which the 578xx chip hangs after running traffic, and then pulling the network cable.
This occurs since TX pipe is stalled due to missing XON indication towards the NIG.
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Tue, 2 Aug 2011 22:59:10 +0000 (22:59 +0000)]
bnx2x: Fix missing pause on for 578xx
When link speed is 1G and below, pause weren't sent due to missing pause setting in the UMAC.
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
françois romieu [Tue, 2 Aug 2011 03:53:43 +0000 (03:53 +0000)]
r8169 : MAC address change fix for the 8168e-vl.
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=39252
Hayes suggested that the usual MAC{0, 4} register writes be completed
with writes to extended GigaMAC registers :
- 0xe0 .. 0xe5
- 0xf2 .. 0xf7
Registers 0xf0 and 0xf1 should be set to 0.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wey-Yi Guy [Tue, 2 Aug 2011 16:08:37 +0000 (09:08 -0700)]
iwlagn: 5000 do not support idle mode
5000 series has issue supporting power save idle mode:
commit
9dc2153315650eae220898668b6aa56a25c130be
iwlwifi: always support idle mode for agn devices
For agn devices, always support idle mode which help power
consumption in idle unassociated state.
the above changes cause 5000 become not stable when power management is "on"
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2312
Cc: stable@kernel.org #2.6.39, #3.0.0
Reported-by: Devin J Pohly <djpohly+iwl@gmail.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Stanislaw Gruszka [Tue, 2 Aug 2011 11:29:02 +0000 (13:29 +0200)]
rt2x00: fix usage of NULL queue
We may call rt2x00queue_pause_queue(queue) with queue == NULL. Bug
was introduced by commit
62fe778412b36791b7897cfa139342906fbbf07b
"rt2x00: Fix stuck queue in tx failure case" .
Cc: stable@kernel.org # 3.0+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Helmut Schaa [Tue, 2 Aug 2011 09:43:14 +0000 (11:43 +0200)]
rt2x00: Fix compilation without CONFIG_RT2X00_LIB_CRYPTO
This was introduced by commit
77b5621bac4a56b83b9081f48d4e7d1accdde400 (rt2x00: Don't use queue entry
as parameter when creating TX descriptor.)
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Emmanuel Grumbach [Mon, 1 Aug 2011 19:46:57 +0000 (12:46 -0700)]
iwlagn: sysfs couldn't find the priv pointer
This bug has been introduced by:
d593411084a56124aa9d80aafa15db8463b2d8f7
Author: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Mon Jul 11 10:48:51 2011 +0300
iwlagn: simplify the bus architecture
Revert part of the buggy patch: dev_get_drvdata will now return
iwl_priv as it did before the patch.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Tested-by: Daniel Halperin <dhalperi@cs.washington.edu>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Vladislav Zolotarov [Tue, 2 Aug 2011 08:35:43 +0000 (01:35 -0700)]
bnx2x: Prevent restarting Tx during bnx2x_nic_unload
Tx queues were stopped before bp->state was changed to a value different
from BNX2X_STATE_OPEN, which allowed the bnx2x_tx_int() called from the
NAPI context to re-enable it. This then allowed the netdev->ndo_start_xmit()
to be called in the middle of the function reset and rings freeing.
This patch changes bp->state to a value different
from BNX2X_STATE_OPEN BEFORE disabling the Tx queues in order to restore the
broken protection against the above race in the bnx2x_tx_int().
Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 29 Jul 2011 18:37:31 +0000 (18:37 +0000)]
net: add kerneldoc to skb_copy_bits()
Since skb_copy_bits() is called from assembly, add a fat comment to make
clear we should think twice before changing its prototype.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jesper Juhl [Tue, 2 Aug 2011 00:59:44 +0000 (17:59 -0700)]
Documentation/bonding.txt: Update to 3.x version numbers
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Moore [Mon, 1 Aug 2011 11:10:33 +0000 (11:10 +0000)]
doc: Update the email address for Paul Moore in various source files
My @hp.com will no longer be valid starting August 5, 2011 so an update is
necessary. My new email address is employer independent so we don't have
to worry about doing this again any time soon.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Moore [Mon, 1 Aug 2011 11:10:26 +0000 (11:10 +0000)]
doc: Update the MAINTAINERS info for Paul Moore
My @hp.com will no longer be valid starting August 5, 2011 so an update is
necessary. My new email address is employer independent so we don't have
to worry about doing this again any time soon.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Chas Williams [Tue, 2 Aug 2011 00:56:14 +0000 (17:56 -0700)]
atm: br2864: sent packets truncated in VC routed mode
Reported-by: Pascal Hambourg <pascal@plouf.fr.eu.org>
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stanislaw Gruszka [Sat, 30 Jul 2011 11:32:56 +0000 (13:32 +0200)]
rt2x00: rt2800: fix zeroing skb structure
We should clear skb->data not skb itself. Bug was introduced by:
commit
0b8004aa12d13ec750d102ba4082a95f0107c649 "rt2x00: Properly
reserve room for descriptors in skbs".
Cc: stable@kernel.org # 2.6.36+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Larry Finger [Fri, 29 Jul 2011 15:53:12 +0000 (10:53 -0500)]
rtlwifi: Fix kernel oops on ARM SOC
This driver uses information from the self member of the pci_bus struct to
get information regarding the bridge to which the PCIe device is attached.
Unfortunately, this member is not established on all architectures, which
leads to a kernel oops.
Skipping the entire block that uses the self member to determine the bridge
vendor will only affect RTL8192DE devices as that driver sets the ASPM support
flag differently when the bridge vendor is Intel. If the self member is
available, there is no functional change.
This patch fixes Bugzilla No. 40212.
Reported-by: Hubert Liao <liao.hubertt@gmail.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@kernel.org> [back to 2.6.38]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Stanislaw Gruszka [Fri, 29 Jul 2011 13:59:08 +0000 (15:59 +0200)]
ath9k: skip ->config_pci_powersave() if PCIe port has ASPM disabled
We receive many bug reports about system hang during suspend/resume
when ath9k driver is in use. Adrian Chadd remarked that this problem
happens on systems that have ASPM disabled.
To do not hit the bug, skip doing ->config_pci_powersave magic if PCIe
downstream port device, which ath9k device is connected to, has ASPM
disabled.
Bug was introduced by:
commit
53bc7aa08b48e5cd745f986731cc7dc24eef2a9f
Author: Vivek Natarajan <vnatarajan@atheros.com>
Date: Mon Apr 5 14:48:04 2010 +0530
ath9k: Add support for newer AR9285 chipsets.
Patch should address:
https://bugzilla.kernel.org/show_bug.cgi?id=37462
https://bugzilla.kernel.org/show_bug.cgi?id=37082
https://bugzilla.redhat.com/show_bug.cgi?id=697157
however I did not receive confirmation about that, except from Camilo
Mesias, whose system stops hang regularly with this patch (but still
hangs from time to time, but this is probably some other bug).
Tested-by: Camilo Mesias <camilo@mesias.co.uk>
Cc: stable@kernel.org # 2.6.35+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Dan Carpenter [Fri, 29 Jul 2011 08:52:18 +0000 (11:52 +0300)]
cfg80211: off by one in nl80211_trigger_scan()
The test is off by one so we'd read past the end of the
wiphy->bands[] array on the next line.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Stanislaw Gruszka [Wed, 27 Jul 2011 13:37:43 +0000 (15:37 +0200)]
iwlegacy: set tx power after rxon_assoc
If settings of tx power was deferred during scan or changing channel we
have to setup them during commit rxon. Fix problem on 3945 (4965 already
has this fix).
Optimize code to apply tx settings only when tx power was actually
changed.
Cc: stable@kernel.org # 2.6.39+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Felix Fietkau [Wed, 27 Jul 2011 13:01:02 +0000 (15:01 +0200)]
ath9k: initialize tx chainmask before testing channel tx power values
With an uninitialized chainmask, the per-channel power will only contain
the power limits for a single chain instead of the combined tx power.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Eric Dumazet [Fri, 29 Jul 2011 19:22:42 +0000 (19:22 +0000)]
sch_sfq: fix sfq_enqueue()
commit
8efa88540635 (sch_sfq: avoid giving spurious NET_XMIT_CN signals)
forgot to call qdisc_tree_decrease_qlen() to signal upper levels that a
packet (from another flow) was dropped, leading to various problems.
With help from Michal Soltys and Michal Pokrywka, who did a bisection.
Bugzilla ref: https://bugzilla.kernel.org/show_bug.cgi?id=39372
Debian ref: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631945
Reported-by: Lucas Bocchi <lucas.bocchi@gmail.com>
Reported-and-bisected-by: Michal Pokrywka <wolfmoon@o2.pl>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Michal Soltys <soltys@ziu.info>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Thu, 28 Jul 2011 02:46:03 +0000 (02:46 +0000)]
drivers/net/niu.c: adjust array index
Convert array index from the loop bound to the loop index.
A simplified version of the semantic patch that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression e1,e2,ar;
@@
for(e1 = 0; e1 < e2; e1++) { <...
ar[
- e2
+ e1
]
...> }
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Thu, 28 Jul 2011 02:46:01 +0000 (02:46 +0000)]
net: adjust array index
Convert array index from the loop bound to the loop index.
A simplified version of the semantic patch that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression e1,e2,ar;
@@
for(e1 = 0; e1 < e2; e1++) { <...
ar[
- e2
+ e1
]
...> }
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 1 Aug 2011 09:23:15 +0000 (02:23 -0700)]
MAINTAINERS: Remove Pekka Savola from ipv6.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 29 Jul 2011 01:38:53 +0000 (18:38 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/horms/ipvs-2.6
Oleg Nesterov [Fri, 29 Jul 2011 01:26:32 +0000 (18:26 -0700)]
proc_fork_connector: a lockless ->real_parent usage is not safe
proc_fork_connector() uses ->real_parent lockless. This is not safe if
copy_process() was called with CLONE_THREAD or CLONE_PARENT, in this case
the parent != current can go away at any moment.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Vladimir Zapolskiy <vzapolskiy@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Randy Dunlap [Thu, 28 Jul 2011 06:54:36 +0000 (06:54 +0000)]
net: fix new sunrpc kernel-doc warning
Fix new kernel-doc warning in sunrpc:
Warning(net/sunrpc/xprt.c:196): No description found for parameter 'xprt'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Lennart Sorensen [Thu, 28 Jul 2011 13:18:11 +0000 (13:18 +0000)]
r8169: Add support for D-Link 530T rev C1 (Kernel Bug 38862)
The D-Link DGE-530T rev C1 is a re-badged Realtek 8169 named DLG10028C,
unlike the previous revisions which were skge based. It is probably
the same as the discontinued DGE-528T (0x4300) other than the PCI ID.
The PCI ID is 0x1186:0x4302.
Adding it to r8169.c where 0x1186:0x4300 is already found makes the card
be detected and work.
This fixes https://bugzilla.kernel.org/show_bug.cgi?id=38862
Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Joe Perches [Thu, 28 Jul 2011 10:54:23 +0000 (10:54 +0000)]
MAINTAINERS: orphan FrameRelay DLCI
Mike McLagan hasn't contributed in many years and his email bounces.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: David Miller <davem@davemloft.net>
Cc: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Klement Fish [Thu, 28 Jul 2011 06:03:22 +0000 (06:03 +0000)]
sis190: Rx filter init is needed for MAC address change.
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=34552
Signed-off-by: Klement Fish <klement2@azet.sk>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tushar Gohad [Thu, 28 Jul 2011 10:36:20 +0000 (10:36 +0000)]
xfrm: Fix key lengths for rfc3686(ctr(aes))
Fix the min and max bit lengths for AES-CTR (RFC3686) keys.
The number of bits in key spec is the key length (128/256)
plus 32 bits of nonce.
This change takes care of the "Invalid key length" errors
reported by setkey when specifying 288 bit keys for aes-ctr.
Signed-off-by: Tushar Gohad <tgohad@mvista.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 28 Jul 2011 12:59:19 +0000 (05:59 -0700)]
Merge git://git./linux/kernel/git/davem/sparc
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
n2_crypto: Attach on Niagara-T3.
n2rng: Attach on Niagara-T3.
sparc: Detect and handle UltraSPARC-T3 cpu types.
sparc: Don't do expensive hypervisor PCR write unless necessary.
sparc: Add T3 sun4v cpu type and hypervisor group defines.
sparc: Don't leave sparc_pmu_type NULL on sun4v.
Linus Torvalds [Thu, 28 Jul 2011 12:58:19 +0000 (05:58 -0700)]
Merge git://git./linux/kernel/git/davem/net
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (32 commits)
tg3: Remove 5719 jumbo frames and TSO blocks
tg3: Break larger frags into 4k chunks for 5719
tg3: Add tx BD budgeting code
tg3: Consolidate code that calls tg3_tx_set_bd()
tg3: Add partial fragment unmapping code
tg3: Generalize tg3_skb_error_unmap()
tg3: Remove short DMA check for 1st fragment
tg3: Simplify tx bd assignments
tg3: Reintroduce tg3_tx_ring_info
ASIX: Use only 11 bits of header for data size
ASIX: Simplify condition in rx_fixup()
Fix cdc-phonet build
bonding: reduce noise during init
bonding: fix string comparison errors
net: Audit drivers to identify those needing IFF_TX_SKB_SHARING cleared
net: add IFF_SKB_TX_SHARED flag to priv_flags
net: sock_sendmsg_nosec() is static
forcedeth: fix vlans
gianfar: fix bug caused by
87c288c6e9aa31720b72e2bc2d665e24e1653c3e
gro: Only reset frag0 when skb can be pulled
...
Linus Torvalds [Thu, 28 Jul 2011 12:50:27 +0000 (05:50 -0700)]
Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md: (75 commits)
md/raid10: handle further errors during fix_read_error better.
md/raid10: Handle read errors during recovery better.
md/raid10: simplify read error handling during recovery.
md/raid10: record bad blocks due to write errors during resync/recovery.
md/raid10: attempt to fix read errors during resync/check
md/raid10: Handle write errors by updating badblock log.
md/raid10: clear bad-block record when write succeeds.
md/raid10: avoid writing to known bad blocks on known bad drives.
md/raid10 record bad blocks as needed during recovery.
md/raid10: avoid reading known bad blocks during resync/recovery.
md/raid10 - avoid reading from known bad blocks - part 3
md/raid10: avoid reading from known bad blocks - part 2
md/raid10: avoid reading from known bad blocks - part 1
md/raid10: Split handle_read_error out from raid10d.
md/raid10: simplify/reindent some loops.
md/raid5: Clear bad blocks on successful write.
md/raid5. Don't write to known bad block on doubtful devices.
md/raid5: write errors should be recorded as bad blocks if possible.
md/raid5: use bad-block log to improve handling of uncorrectable read errors.
md/raid5: avoid reading from known bad blocks.
...
Linus Torvalds [Thu, 28 Jul 2011 12:49:31 +0000 (05:49 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
sound: oss: rename local change_bits to avoid powerpc bitsops.h definition
ALSA: hda - Fix duplicated DAC assignments for Realtek
ALSA: asihpi - off by one in asihpi_hpi_ioctl()
ALSA: hda - Fix Oops with Realtek quirks with NULL adc_nids
ALSA: asihpi - bug fix pa use before init.
ALSA: hda - Add support for vref-out based mute LED control on IDT codecs
David S. Miller [Thu, 28 Jul 2011 08:30:07 +0000 (01:30 -0700)]
n2_crypto: Attach on Niagara-T3.
A small modification was necessary since in the machine description
for 'n2cp' and 'ncp' nodes, there no longer is an 'intr' property.
That's OK because this property was always nothing more than an
array of integers '1' ... 'nr_inos + 1' so we can just compute it
in-place.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Jul 2011 06:33:03 +0000 (23:33 -0700)]
n2rng: Attach on Niagara-T3.
And stop referring to Victoria Falls, as the attribute we're
talking about is whether the rng is multi-unit capable which
applies to several chip variants now.
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:54 +0000 (14:20 +0000)]
tg3: Remove 5719 jumbo frames and TSO blocks
The A0 revision of this chip is the only device that requires these
features to be disabled.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:53 +0000 (14:20 +0000)]
tg3: Break larger frags into 4k chunks for 5719
The 5719 has bug where RDMAs larger than 4k can cause problems. This
patch works around the problem by dividing larger DMA requests into
something the hardware can handle.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:52 +0000 (14:20 +0000)]
tg3: Add tx BD budgeting code
As the driver breaks large skb fragments into smaller submissions to the
hardware, there is a new danger that BDs might get exhausted before all
fragments have been mapped. This patch adds code to make sure tx BDs
aren't oversubscribed and flag the condition if it happens.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:51 +0000 (14:20 +0000)]
tg3: Consolidate code that calls tg3_tx_set_bd()
This patch consolidates all code that populates tx BDs into a single
routine. Setting tx BDs needs to be more carefully controlled to see if
workarounds need to be applied.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:50 +0000 (14:20 +0000)]
tg3: Add partial fragment unmapping code
The following patches are going to break skb fragments into smaller
sizes. This patch attempts to make the change easier to digest by only
addressing the skb teardown portion.
The patch modifies the driver to skip over any BDs that have a flag set
that indicates the BD isn't the beginning of an skb fragment. Such BDs
were a result of segmentation and do not need a pci_unmap_page() call.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:49 +0000 (14:20 +0000)]
tg3: Generalize tg3_skb_error_unmap()
In the following patches, unmapping skb fragments will get just as
complicated as mapping them. This patch generalizes
tg3_skb_error_unmap() and makes it the one-stop-shop for skb unmapping.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:48 +0000 (14:20 +0000)]
tg3: Remove short DMA check for 1st fragment
The first fragment of an skb should always be greater than 8 bytes.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:47 +0000 (14:20 +0000)]
tg3: Simplify tx bd assignments
In the following patches, the process the driver will use to assign skb
fragments to transmit BDs will get more complicated. To prepare for
that new code, this patch seeks to simplify how transmit BDs are
populated. It does this by separating the code that assigns the BD
members from the logic that controls how the fields are set.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:46 +0000 (14:20 +0000)]
tg3: Reintroduce tg3_tx_ring_info
The following patches will require the use of an additional flag in the
ring_info structure. The use of this flag is tx path specific, so this
patch defines a specialized ring_info structure.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marek Vasut [Tue, 26 Jul 2011 16:44:47 +0000 (16:44 +0000)]
ASIX: Use only 11 bits of header for data size
The AX88772B uses only 11 bits of the header for the actual size. The other bits
are used for something else. This causes dmesg full of messages:
asix_rx_fixup() Bad Header Length
This patch trims the check to only 11 bits. I believe on older chips, the
remaining 5 top bits are unused.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marek Vasut [Tue, 26 Jul 2011 16:44:46 +0000 (16:44 +0000)]
ASIX: Simplify condition in rx_fixup()
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Chris Clayton [Tue, 26 Jul 2011 12:20:22 +0000 (12:20 +0000)]
Fix cdc-phonet build
Try to send to correct address this time!
---------- Forwarded Message ----------
Subject: [PATCH] Fix cdc-phonet build
Date: Saturday 23 Jul 2011
From: Chris Clayton <chris2553@googlemail.com>
To: linux-net@vger.kernel.org
cdc-phonet does not presently build on linux-3.0 because there is no entry for it in
drivers/net/Makefile. This patch adds that entry.
Signed-off-by: Chris Clayton <chris2553@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Gospodarek [Wed, 27 Jul 2011 10:09:26 +0000 (10:09 +0000)]
bonding: reduce noise during init
On Tue, Jul 26, 2011 at 05:40:27PM -0700, Joe Perches wrote:
> On Tue, 2011-07-26 at 17:37 -0700, Jay Vosburgh wrote:
> > Joe Perches <joe@perches.com> wrote:
> > >I'd prefer you don't separate the format string
> > >into multiple pieces.
> > Why not? To me, it looks easier to read split into sections
> > that don't wrap lines.
>
> Harder to grep for a dmesg and the
> defect rate of these split formats is
> typically higher than single strings
> because of bad spacing between string
> segments.
>
I noticed that you took some time back in late 2009 to 'consolidate' the
split format-strings present in the bonding driver at the time and I've
decided I'm fine to leave them the way they are. The main point of my
patch was to change the output and I would like to get that included.
Here is my updated patch...
Subject: [PATCH net-next-2.6 v2] bonding: reduce noise during init
Many are using sysfs to configure bonding rather than module options, so
there is no need for bonding to throw this warning in normal cases.
Keep the message around when debugging is enabled as it might be useful
for someone desperate enough to enable debugging, but eliminate it
otherwise.
Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Gospodarek [Tue, 26 Jul 2011 11:12:27 +0000 (11:12 +0000)]
bonding: fix string comparison errors
When a bond contains a device where one name is the subset of another
(eth1 and eth10, for example), one cannot properly set the primary
device or the currently active device.
This was reported and based on work by Takuma Umeya. I also verified
the problem and tested that this fix resolves it.
V2: A few did not like the the current code or my changes, so I
refactored bonding_store_primary and bonding_store_active_slave to be a
bit cleaner, dropped the use of strnicmp since we did not really need
the comparison to be case insensitive, and formatted the input string
from sysfs so a comparison to IFNAMSIZ could be used.
I also discovered an error in bonding_store_active_slave that would
modify bond->primary_slave rather than bond->curr_active_slave before
forcing the bonding driver to choose a new active slave.
V3: Actually sending the proper patch....
Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Reported-by: Takuma Umeya <tumeya@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Tue, 26 Jul 2011 06:05:38 +0000 (06:05 +0000)]
net: Audit drivers to identify those needing IFF_TX_SKB_SHARING cleared
After the last patch, We are left in a state in which only drivers calling
ether_setup have IFF_TX_SKB_SHARING set (we assume that drivers touching real
hardware call ether_setup for their net_devices and don't hold any state in
their skbs. There are a handful of drivers that violate this assumption of
course, and need to be fixed up. This patch identifies those drivers, and marks
them as not being able to support the safe transmission of skbs by clearning the
IFF_TX_SKB_SHARING flag in priv_flags
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Karsten Keil <isdn@linux-pingi.de>
CC: "David S. Miller" <davem@davemloft.net>
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Patrick McHardy <kaber@trash.net>
CC: Krzysztof Halasa <khc@pm.waw.pl>
CC: "John W. Linville" <linville@tuxdriver.com>
CC: Greg Kroah-Hartman <gregkh@suse.de>
CC: Marcel Holtmann <marcel@holtmann.org>
CC: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Tue, 26 Jul 2011 06:05:37 +0000 (06:05 +0000)]
net: add IFF_SKB_TX_SHARED flag to priv_flags
Pktgen attempts to transmit shared skbs to net devices, which can't be used by
some drivers as they keep state information in skbs. This patch adds a flag
marking drivers as being able to handle shared skbs in their tx path. Drivers
are defaulted to being unable to do so, but calling ether_setup enables this
flag, as 90% of the drivers calling ether_setup touch real hardware and can
handle shared skbs. A subsequent patch will audit drivers to ensure that the
flag is set properly
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Jiri Pirko <jpirko@redhat.com>
CC: Robert Olsson <robert.olsson@its.uu.se>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Alexey Dobriyan <adobriyan@gmail.com>
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 26 Jul 2011 02:39:41 +0000 (02:39 +0000)]
net: sock_sendmsg_nosec() is static
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Anton Blanchard <anton@samba.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 26 Jul 2011 10:19:28 +0000 (10:19 +0000)]
forcedeth: fix vlans
For some reason, when rxaccel is disabled, NV_RX3_VLAN_TAG_PRESENT is
still set and some pseudorandom vids appear. So check for
NETIF_F_HW_VLAN_RX as well. Also set correctly hw_features and set vlan
mode on probe.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sebastian Pöhn [Tue, 26 Jul 2011 00:03:13 +0000 (00:03 +0000)]
gianfar: fix bug caused by
87c288c6e9aa31720b72e2bc2d665e24e1653c3e
commit
87c288c6e9aa31720b72e2bc2d665e24e1653c3e "gianfar: do vlan cleanup" has two issues:
# permutation of rx and tx flags
# enabling vlan tag insertion by default (this leads to unusable connections on some configurations)
If VLAN insertion is requested (via ethtool) it will be set at an other point ...
Signed-off-by: Sebastian Poehn <sebastian.poehn@belden.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Jul 2011 05:18:47 +0000 (22:18 -0700)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless-next-2.6
David S. Miller [Thu, 28 Jul 2011 04:06:16 +0000 (21:06 -0700)]
sparc: Detect and handle UltraSPARC-T3 cpu types.
The cpu compatible string we look for is "SPARC-T3".
As far as memset/memcpy optimizations go, we treat this chip the same
as Niagara-T2/T2+. Use cache initializing stores for memset, and use
perfetch, FPU block loads, cache initializing stores, and block stores
for copies.
We use the Niagara-T2 perf support, since T3 is a close relative in
this regard. Later we'll add support for the new events T3 can
report, plus enable T3's new "sample" mode.
For now I haven't added any new ELF hwcap flags. We probably need
to add a couple, for example:
T2 and T3 both support the population count instruction in hardware.
T3 supports VIS3 instructions, including support (finally) for
partitioned shift. One can also now move directly between float
and integer registers.
T3 supports instructions meant to help with Galois Field and other HPC
calculations, such as XOR multiply. Also there are "OP and negate"
instructions, for example "fnmul" which is multiply-and-negate.
T3 recognizes the transactional memory opcodes, however since
transactional memory isn't supported: 1) 'commit' behaves as a NOP and
2) 'chkpt' always branches 3) 'rdcps' returns all zeros and 4) 'wrcps'
behaves as a NOP.
So we'll need about 3 new elf capability flags in the end to represent
all of these things.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Jul 2011 03:46:25 +0000 (20:46 -0700)]
sparc: Don't do expensive hypervisor PCR write unless necessary.
The hypervisor call is only necessary if hypervisor events are
being requested.
So if we're not tracking hypervisor events, simply do a direct
register write.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Jul 2011 03:42:51 +0000 (20:42 -0700)]
sparc: Add T3 sun4v cpu type and hypervisor group defines.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Jul 2011 03:25:57 +0000 (20:25 -0700)]
sparc: Don't leave sparc_pmu_type NULL on sun4v.
Otherwise we'll crash in the sparc perf init code.
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 28 Jul 2011 02:26:38 +0000 (19:26 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (54 commits)
tpm_nsc: Fix bug when loading multiple TPM drivers
tpm: Move tpm_tis_reenable_interrupts out of CONFIG_PNP block
tpm: Fix compilation warning when CONFIG_PNP is not defined
TOMOYO: Update kernel-doc.
tpm: Fix a typo
tpm_tis: Probing function for Intel iTPM bug
tpm_tis: Fix the probing for interrupts
tpm_tis: Delay ACPI S3 suspend while the TPM is busy
tpm_tis: Re-enable interrupts upon (S3) resume
tpm: Fix display of data in pubek sysfs entry
tpm_tis: Add timeouts sysfs entry
tpm: Adjust interface timeouts if they are too small
tpm: Use interface timeouts returned from the TPM
tpm_tis: Introduce durations sysfs entry
tpm: Adjust the durations if they are too small
tpm: Use durations returned from TPM
TOMOYO: Enable conditional ACL.
TOMOYO: Allow using argv[]/envp[] of execve() as conditions.
TOMOYO: Allow using executable's realpath and symlink's target as conditions.
TOMOYO: Allow using owner/group etc. of file objects as conditions.
...
Fix up trivial conflict in security/tomoyo/realpath.c
NeilBrown [Thu, 28 Jul 2011 01:39:25 +0000 (11:39 +1000)]
md/raid10: handle further errors during fix_read_error better.
If we find more read/write errors we should record a bad block before
failing the device.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:25 +0000 (11:39 +1000)]
md/raid10: Handle read errors during recovery better.
Currently when we get a read error during recovery, we simply abort
the recovery.
Instead, repeat the read in page-sized blocks.
On successful reads, write to the target.
On read errors, record a bad block on the destination,
and only if that fails do we abort the recovery.
As we now retry reads we need to know where we read from. This was in
bi_sector but that can be changed during a read attempt.
So store the correct from_addr and to_addr in the r10_bio for later
access.
Signed-off-by: NeilBrown<neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:25 +0000 (11:39 +1000)]
md/raid10: simplify read error handling during recovery.
If a read error is detected during recovery the code currently
fails the read device.
This isn't really necessary. recovery_request_write will signal
a write error to end_sync_write and it will record a write
error on the destination device which will record a bad block
there or kick it from the array.
So just remove this call to do md_error.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:25 +0000 (11:39 +1000)]
md/raid10: record bad blocks due to write errors during resync/recovery.
If we get a write error during resync/recovery don't fail the device
but instead record a bad block. If that fails we can then fail the
device.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:25 +0000 (11:39 +1000)]
md/raid10: attempt to fix read errors during resync/check
We already attempt to fix read errors found during normal IO
and a 'repair' process.
It is best to try to repair them at any time they are found,
so move a test so that during sync and check a read error will
be corrected by over-writing with good data.
If both (all) devices have known bad blocks in the sync section we
won't try to fix even though the bad blocks might not overlap. That
should be considered later.
Also if we hit a read error during recovery we don't try to fix it.
It would only be possible to fix if there were at least three copies
of data, which is not very common with RAID10. But it should still
be considered later.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10: Handle write errors by updating badblock log.
When we get a write error (in the data area, not in metadata),
update the badblock log rather than failing the whole device.
As the write may well be many blocks, we trying writing each
block individually and only log the ones which fail.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10: clear bad-block record when write succeeds.
If we succeed in writing to a block that was recorded as
being bad, we clear the bad-block record.
This requires some delayed handling as the bad-block-list update has
to happen in process-context.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10: avoid writing to known bad blocks on known bad drives.
Writing to known bad blocks on drives that have seen a write error
is asking for trouble. So try to avoid these blocks.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10 record bad blocks as needed during recovery.
When recovering one or more devices, if all the good devices have
bad blocks we should record a bad block on the device being rebuilt.
If this fails, we need to abort the recovery.
To ensure we don't think that we aborted later than we actually did,
we need to move the check for MD_RECOVERY_INTR earlier in md_do_sync,
in particular before mddev->curr_resync is updated.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10: avoid reading known bad blocks during resync/recovery.
During resync/recovery limit the size of the request to avoid
reading into a bad block that does not start at-or-before the current
read address.
Similarly if there is a bad block at this address, don't allow the
current request to extend beyond the end of that bad block.
Now that we don't ever read from known bad blocks, it is safe to allow
devices with those blocks into the array.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10 - avoid reading from known bad blocks - part 3
When attempting to repair a read error, don't read from
devices with a known bad block.
As we are only reading PAGE_SIZE blocks, we don't try to
narrow down to smaller regions in the hope that only part of this
page is bad - it isn't worth the effort.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:23 +0000 (11:39 +1000)]
md/raid10: avoid reading from known bad blocks - part 2
When redirecting a read error to a different device, we must
again avoid bad blocks and possibly split the request.
Spin_lock typo fixed thanks to Dan Carpenter <error27@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:23 +0000 (11:39 +1000)]
md/raid10: avoid reading from known bad blocks - part 1
This patch just covers the basic read path:
1/ read_balance needs to check for badblocks, and return not only
the chosen slot, but also how many good blocks are available
there.
2/ read submission must be ready to issue multiple reads to
different devices as different bad blocks on different devices
could mean that a single large read cannot be served by any one
device, but can still be served by the array.
This requires keeping count of the number of outstanding requests
per bio. This count is stored in 'bi_phys_segments'
On read error we currently just fail the request if another target
cannot handle the whole request. Next patch refines that a bit.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:23 +0000 (11:39 +1000)]
md/raid10: Split handle_read_error out from raid10d.
raid10d() is too big and is about to get bigger, so split
handle_read_error() out as a separate function.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:23 +0000 (11:39 +1000)]
md/raid10: simplify/reindent some loops.
When a loop ends with a large if, it can be neater to change the
if to invert the condition and just 'continue'.
Then the body of the if can be indented to a lower level.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:23 +0000 (11:39 +1000)]
md/raid5: Clear bad blocks on successful write.
On a successful write to a known bad block, flag the sh
so that raid5d can remove the known bad block from the list.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:22 +0000 (11:39 +1000)]
md/raid5. Don't write to known bad block on doubtful devices.
If a device has seen write errors, don't write to any known
bad blocks on that device.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:22 +0000 (11:39 +1000)]
md/raid5: write errors should be recorded as bad blocks if possible.
When a write error is detected, don't mark the device as failed
immediately but rather record the fact for handle_stripe to deal with.
Handle_stripe then attempts to record a bad block. Only if that fails
does the device get marked as faulty.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:22 +0000 (11:39 +1000)]
md/raid5: use bad-block log to improve handling of uncorrectable read errors.
If we get an uncorrectable read error - record a bad block rather than
failing the device.
And if these errors (which may be due to known bad blocks) cause
recovery to be impossible, record a bad block on the recovering
devices, or abort the recovery.
As we might abort a recovery without failing a device we need to teach
RAID5 about recovery_disabled handling.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:22 +0000 (11:39 +1000)]
md/raid5: avoid reading from known bad blocks.
There are two times that we might read in raid5:
1/ when a read request fits within a chunk on a single
working device.
In this case, if there is any bad block in the range of
the read, we simply fail the cache-bypass read and
perform the read though the stripe cache.
2/ when reading into the stripe cache. In this case we
mark as failed any device which has a bad block in that
strip (1 page wide).
Note that we will both avoid reading and avoid writing.
This is correct (as we will never read from the block, there
is no point writing), but not optimal (as writing could 'fix'
the error) - that will be addressed later.
If we have not seen any write errors on the device yet, we treat a bad
block like a recent read error. This will encourage an attempt to fix
the read error which will either generate a write error, or will
ensure good data is stored there. We don't yet forget the bad block
in that case. That comes later.
Now that we honour bad blocks when reading we can allow devices with
bad blocks into the array.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:38:13 +0000 (11:38 +1000)]
md/raid1: factor several functions out or raid1d()
raid1d is too big with several deep branches.
So separate them out into their own functions.
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Namhyung Kim <namhyung@gmail.com>
NeilBrown [Thu, 28 Jul 2011 01:33:42 +0000 (11:33 +1000)]
md/raid1: improve handling of read failure during recovery.
If we cannot read a block from anywhere during recovery, there is
now a better approach than just giving up.
We can record a bad block on each device and keep going - being
careful not to clear the bad block when a write succeeds as it might -
it will be a write of incorrect data.
We have now reached the state where - for raid1 - we only call
md_error if md_set_badblocks has failed.
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Namhyung Kim <namhyung@gmail.com>
NeilBrown [Thu, 28 Jul 2011 01:33:00 +0000 (11:33 +1000)]
md/raid1: record badblocks found during resync etc.
If we find a bad block while writing as part of resync/recovery we
need to report that back to raid1d which must record the bad block,
or fail the device.
Similarly when fixing a read error, a further error should just
record a bad block if possible rather than failing the device.
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Namhyung Kim <namhyung@gmail.com>