Kalle Valo [Mon, 30 Mar 2015 06:39:12 +0000 (09:39 +0300)]
Merge tag 'iwlwifi-for-kalle-2015-03-30' of https://git./linux/kernel/git/iwlwifi/iwlwifi-fixes
* fix a memory leak: we leaked memory each time the module
was loaded.
Larry Finger [Mon, 23 Mar 2015 19:07:57 +0000 (14:07 -0500)]
iwlwifi: Fix memory leak in iwl_req_fw_callback()
In this routine, kzalloc allocates a memory block. This allocation is
freed in the error paths, but not in the normal exit, thus the allocation
is leaked.
The kmemleak facility was used to find the leak.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Cc: Intel Linux Wireless <ilw@linux.intel.com>
Kalle Valo [Mon, 23 Mar 2015 04:43:43 +0000 (06:43 +0200)]
Merge tag 'iwlwifi-for-kalle-2014-03-22' of https://git./linux/kernel/git/iwlwifi/iwlwifi-fixes
* avoid panic with lots of IBSS stations
* Fix dvm's behavior after suspend resume
* Allow to keep connection after CSA failure
* Remove a noisy by harmless WARN_ON
* New device IDs
Larry Finger [Sat, 21 Mar 2015 20:16:05 +0000 (15:16 -0500)]
rtlwifi: Fix IOMMU mapping leak in AP mode
Transmission of an AP beacon does not call the TX interrupt service routine,
which usually does the cleanup. Instead, cleanup is handled in a tasklet
completion routine. Unfortunately, this routine has a serious bug in that it does
not release the DMA mapping before it frees the skb, thus one IOMMU mapping is
leaked for each beacon. The test system failed with no free IOMMU mapping slots
approximately one hour after hostapd was used to start an AP.
This issue was reported and tested at https://github.com/lwfinger/rtlwifi_new/issues/30.
Reported-and-tested-by: Kevin Mullican <kevin@mullican.com>
Cc: Kevin Mullican <kevin@mullican.com>
Signed-off-by: Shao Fu <shaofu@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org> [3.18+]
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Arend van Spriel [Fri, 20 Mar 2015 21:18:17 +0000 (22:18 +0100)]
brcmfmac: disable MBSS feature for BCM43362
The BCM43362 firmware falsely reports it is capable of providing
MBSS. As a result AP mode no longer works for this device. Therefor
disable MBSS in the driver for this chipset.
Cc: stable@vger.kernel.org # 3.19.y
Reported-by: Jorg Krause <jkrause@posteo.de>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Johannes Berg [Fri, 6 Mar 2015 08:17:37 +0000 (09:17 +0100)]
iwlwifi: mvm: remove WARN_ON for invalid BA notification
The firmware frequently manages to trigger this, and there's
no known driver workaround, so stop warning.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Oren Givon [Thu, 19 Mar 2015 10:46:06 +0000 (12:46 +0200)]
iwlwifi: add new 3165 series PCI IDs
Add new 3165 PCI IDs for new 1x1 cards.
Signed-off-by: Oren Givon <oren.givon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Johannes Berg [Tue, 10 Mar 2015 20:24:34 +0000 (21:24 +0100)]
iwlwifi: mvm: protect rate scaling against non-mvm IBSS stations
When the driver callback returns that it's out of space for new
stations, the mac80211 IBSS code still keeps the station so it
doesn't try to add it over and over again.
Since the rate scaling algorithm is separate in mac80211, it also
invokes the rate scaling algorithm for such stations. It doesn't
know that our rate scaling algorithm is tightly integrated with
the MVM code and relies on those data structures, and it cannot
as the abstraction doesn't allow for it.
This leads to crashes when the rate scaling algorithm tries to
use uninitialized data, notably the mvmsta->vif pointer.
Protect against this in the rate scaling algorithm. We cannot get
good rates with such peers anyway since the firmware cannot do
anything with them.
This should fix https://bugzilla.kernel.org/show_bug.cgi?id=93461
CC: <stable@vger.kernel.org>
Reported-by: Richard Taylor <rjt-kernel@thegrindstone.me.uk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Emmanuel Grumbach [Mon, 16 Mar 2015 07:08:07 +0000 (09:08 +0200)]
iwlwifi: dvm: run INIT firmware again upon .start()
The assumption before this patch was that we don't need to
run again the INIT firmware after the system booted. The
INIT firmware runs calibrations which impact the physical
layer's behavior.
Users reported that it may be helpful to run these
calibrations again every time the interface is brought up.
The penatly is minimal, since the calibrations run fast.
This fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=94341
CC: <stable@vger.kernel.org>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Felix Fietkau [Sun, 15 Mar 2015 07:07:04 +0000 (08:07 +0100)]
ath9k: disable TPC support again (for now)
TPC support has been observed to cause some tx power fluctuations on
some devices with at least AR934x and AR938x chips.
Disable it for now until the bugs have been found and fixed
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Felix Fietkau [Thu, 12 Mar 2015 16:17:18 +0000 (17:17 +0100)]
ath9k: fix tracking of enabled AP beacons
sc->nbcnvifs tracks assigned beacon slots, not enabled beacons.
Therefore, it cannot be used to decide if cur_conf->enable_beacon (bool)
should be updated, or if beacons have been enabled already.
With the current code (depending on the order of calls), beacons often
do not get enabled in an AP+STA setup.
To fix tracking of enabled beacons, convert cur_conf->enable_beacon to a
bitmask of enabled beacon slots.
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Johannes Berg [Tue, 10 Mar 2015 09:47:57 +0000 (10:47 +0100)]
iwlwifi: mvm: disconnect if CSA time event fails scheduling
If this situation ever happens, the mac80211 state machine gets
confused because it never clears csa_active. There was a separate
bug that lead to this happening with a working connection, but it
isn't very robust to try to keep the connection up in this case.
When removing the time event the CSA essentially procedure stops,
so the safest thing to do is to disconnect in this case.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Emmanuel Grumbach [Tue, 10 Mar 2015 20:42:50 +0000 (22:42 +0200)]
iwlwifi: dvm: drop VO packets when mac80211 tells us to
mac80211 now informs the driver when to drop the packets
upon flush(). This will happen before disconnecting, or
before we shut down the interface. We can now rely on this
to drop all the packets including the VO queues.
When mac80211 sets drop to false, wait for all the queues
to be empty.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Pontus Fuchs [Fri, 6 Mar 2015 15:18:41 +0000 (16:18 +0100)]
brcmfmac: Perform bound checking on vendor command buffer
A short or malformed vendor command buffer could cause reads outside
the command buffer.
Cc: stable@vger.kernel.org # v3.19
Signed-off-by: Pontus Fuchs <pontusf@broadcom.com>
[arend@broadcom.com: slightly modified debug trace output]
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Kalle Valo [Fri, 6 Mar 2015 16:28:57 +0000 (18:28 +0200)]
Merge tag 'iwlwifi-for-kalle-2015-03-05' of https://git./linux/kernel/git/iwlwifi/iwlwifi-fixes
* fix ROC removal - avoids a firmware crash
* fix throughput regression on iwldvm devices
* fix panic in BT Coex
* fixes in rate control
* fixes in scan
Emmanuel Grumbach [Thu, 5 Mar 2015 11:43:15 +0000 (13:43 +0200)]
iwlwifi: mvm: BT Coex - fix a NULL pointer exception
The commit below introduced an unsafe dereference of
mvmvif->phy_ctxt. It can be NULL even if we hold the mutex.
We can be handling a BT Coex notification while the vif has
already been unassigned. This can happen since the BT Coex
notification is hanled asynchronuously: we can have started
to handle the BT Coex notification trying to acquire the
mutex while the unassign flow already got it. The BT Coex
notification handling will wait for the mutext. I'll get it
later, but then mvmvif->phy_ctxt will be NULL.
Panic log:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<
f985180d>] iwl_mvm_bt_notif_iterator+0x9d/0x340 [iwlmvm]
*pdpt =
0000000000000000 *pde =
f000eef300000007
Oops: 0000 [#1] SMP
Workqueue: events iwl_mvm_async_handlers_wk [iwlmvm]
task:
ed719b20 ti:
ec03e000 task.ti:
ec03e000
EIP: 0060:[<
f985180d>] EFLAGS:
00010202 CPU: 2
EIP is at iwl_mvm_bt_notif_iterator+0x9d/0x340 [iwlmvm]
EAX:
00000000 EBX:
f6d3cb70 ECX:
f6d3cb70 EDX:
00000000
ESI:
ec03fe40 EDI:
efeb8810 EBP:
ec03fdf0 ESP:
ec03fdac
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
CR0:
80050033 CR2:
00000000 CR3:
01a1a000 CR4:
001407f0
Stack:
f743ca80 f744a404 ec03fdcc c10e3952 00003aba f743ca80 00000246 f743ca80
00000246 00000000 00000001 00000000 ebd45ff6 ebd458a4 f6d3c500 ebd45578
ebd44b01 ec03fe18 f99e1bc2 00000002 ebd44bc0 f9851770 00000000 f6d3c500
Call Trace:
[<
c10e3952>] ? ring_buffer_unlock_commit+0xa2/0xd0
[<
f99e1bc2>] __iterate_interfaces+0x82/0x110 [mac80211]
[<
f9851770>] ? iwl_mvm_bt_coex_reduced_txp+0x140/0x140 [iwlmvm]
[<
f99e1c6a>] ieee80211_iterate_active_interfaces_atomic+0x1a/0x20 [mac80211]
[<
f9851427>] iwl_mvm_bt_coex_notif_handle+0x77/0x280 [iwlmvm]
[<
f9852161>] iwl_mvm_rx_bt_coex_notif_old+0x211/0x220 [iwlmvm]
[<
f9850b8b>] iwl_mvm_rx_bt_coex_notif+0x19b/0x1b0 [iwlmvm]
[<
f983944f>] iwl_mvm_async_handlers_wk+0x7f/0xe0 [iwlmvm]
CC: <stable@vger.kernel.org> [3.19+]
Fixes: 123f515635b1 ("iwlwifi: mvm: BT Coex - add support for TTC / RRC")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Larry Finger [Tue, 24 Feb 2015 15:23:01 +0000 (09:23 -0600)]
rtlwifi: Improve handling of IPv6 packets
Routine rtl_is_special_data() is supposed to identify packets that need to
use a low bit rate so that the probability of successful transmission is
high. The current version has a bug that causes all IPv6 packets to be
labelled as special, with a corresponding low rate of transmission. A
complete fix will be quite intrusive, but until that is available, all
IPv6 packets are identified as regular.
This patch also removes a magic number.
Reported-and-tested-by: Alan Fisher <acf@unixcube.org>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org> [3.18+]
Cc: Alan Fisher <acf@unixcube.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Rafał Miłecki [Mon, 2 Mar 2015 16:18:55 +0000 (17:18 +0100)]
b43: fix support for 5 GHz only BCM43228 model
It was incorrectly detected as 2 GHz device.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: stable@vger.kernel.org # 3.17+
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Michal Kubeček [Mon, 2 Mar 2015 17:27:11 +0000 (18:27 +0100)]
udp: only allow UFO for packets from SOCK_DGRAM sockets
If an over-MTU UDP datagram is sent through a SOCK_RAW socket to a
UFO-capable device, ip_ufo_append_data() sets skb->ip_summed to
CHECKSUM_PARTIAL unconditionally as all GSO code assumes transport layer
checksum is to be computed on segmentation. However, in this case,
skb->csum_start and skb->csum_offset are never set as raw socket
transmit path bypasses udp_send_skb() where they are usually set. As a
result, driver may access invalid memory when trying to calculate the
checksum and store the result (as observed in virtio_net driver).
Moreover, the very idea of modifying the userspace provided UDP header
is IMHO against raw socket semantics (I wasn't able to find a document
clearly stating this or the opposite, though). And while allowing
CHECKSUM_NONE in the UFO case would be more efficient, it would be a bit
too intrusive change just to handle a corner case like this. Therefore
disallowing UFO for packets from SOCK_DGRAM seems to be the best option.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 3 Mar 2015 02:31:00 +0000 (21:31 -0500)]
Merge branch 'sh_eth'
Ben Hutchings says:
====================
Fixes for sh_eth #4 v2
I'm continuing review and testing of Ethernet support on the R-Car H2
chip, with help from a colleague. This series fixes a few more issues.
These are not tested on any of the other supported chips.
v2: Add note that the revert is not a pure revert.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Mar 2015 00:53:08 +0000 (00:53 +0000)]
sh_eth: Really fix padding of short frames on TX
My previous fix to clear padding of short frames used skb->len as the
DMA length, assuming that skb_padto() extended skb->len to include the
padding. That isn't the case; we need to use skb_put_padto() instead.
(This wasn't immediately obvious because software padding isn't
actually needed on the R-Car H2. We could make it conditional on
which chip is being driven, but it's probably not worth the effort.)
Reported-by: "Violeta Menéndez González" <violeta.menendez@codethink.co.uk>
Fixes: 612a17a54b50 ("sh_eth: Fix padding of short frames on TX")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Mar 2015 00:52:39 +0000 (00:52 +0000)]
Revert "sh_eth: Enable Rx descriptor word 0 shift for r8a7790"
This reverts commit
fd9af07c3404ac9ecbd0d859563360f51ce1ffde.
The hardware manual states that the frame error and multicast bits are
copied to bits 9:0 of RD0, not bits 25:16. I've tested that this is
true for RFS1 (CRC error), RFS3 (frame too short), RFS4 (frame too
long) and RFS8 (multicast).
Also adjust a comment to agree with this.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Mar 2015 00:52:08 +0000 (00:52 +0000)]
sh_eth: Fix RX recovery on R-Car in case of RX ring underrun
In case of RX ring underrun (RDE), we attempt to reset the software
descriptor pointers (dirty_rx and cur_rx) to match where the hardware
will read the next descriptor from, as that might not be the first
dirty descriptor. This relies on reading RDFAR, but that register
doesn't exist on all supported chips - specifically, not on the R-Car
chips. This will result in unpredictable behaviour on those chips
after an RDE.
Make this pointer reset conditional and assume that it isn't needed on
the R-Car chips. This fix also assumes that RDFAR is never exposed at
offset 0 in the memory map - this is currently true, and a subsequent
commit will fix the ambiguity between offset 0 and no-offset in the
register offset maps.
Fixes: 79fba9f51755 ("net: sh_eth: fix the rxdesc pointer when rx ...")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Mar 2015 00:52:00 +0000 (00:52 +0000)]
sh_eth: Ensure proper ordering of descriptor active bit write/read
When submitting a DMA descriptor, the active bit must be written last.
When reading a completed DMA descriptor, the active bit must be read
first.
Add memory barriers to ensure that this ordering is maintained.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 2 Mar 2015 20:27:23 +0000 (15:27 -0500)]
Merge branch 'mlx4'
Or Gerlitz says:
====================
Mellanox driver fixes
Two small fixes, please apply to net.
Both patches should go to 3.19.y too.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Shamay [Mon, 2 Mar 2015 16:22:16 +0000 (18:22 +0200)]
net/mlx4_en: Disbale GRO for incoming loopback/selftest packets
Packets which are sent from the selftest (ethtool) flow,
should not be passed to GRO stack but rather dropped by
the driver after validation. To achieve that, we disable
GRO for the duration of the selftest.
Fixes: dd65beac48a5 ("net/mlx4_en: Extend usage of napi_gro_frags")
Reported-by: Carol Soto <clsoto@linux.vnet.ibm.com>
Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Or Gerlitz [Mon, 2 Mar 2015 16:22:15 +0000 (18:22 +0200)]
net/mlx4_core: Fix wrong mask and error flow for the update-qp command
The bit mask for currently supported driver features (MLX4_UPDATE_QP_SUPPORTED_ATTRS)
of the update-qp command was defined twice (using enum value and pre-processor
define directive) and wrong.
The return value of the call to mlx4_update_qp() from within the SRIOV
resource-tracker was wrongly voided down.
Fix both issues.
issue: none
Fixes: 09e05c3f78e9 ('net/mlx4: Set vlan stripping policy by the right command')
Fixes: ce8d9e0d6746 ('net/mlx4_core: Add UPDATE_QP SRIOV wrapper support')
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 1 Mar 2015 19:02:24 +0000 (14:02 -0500)]
Merge branch 'bcmgenet_systemport_stats'
Florian Fainelli says:
====================
net: bcmgenet and systemport statistics fixes
This two patches fix a similar problem in the GENET and SYSTEMPORT drivers
for software maintained statistics used to track DMA mapping and SKB
re-allocation failures.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Sun, 1 Mar 2015 02:09:17 +0000 (18:09 -0800)]
net: systemport: fix software maintained statistics
Commit
60b4ea1781fd ("net: systemport: log RX buffer allocation and RX/TX DMA
failures") added a few software maintained statistics using
BCM_SYSPORT_STAT_MIB_RX and BCM_SYSPORT_STAT_MIB_TX. These statistics are read
from the hardware MIB counters, such that bcm_sysport_update_mib_counters() was
trying to read from a non-existing MIB offset for these counters.
Fix this by introducing a special type: BCM_SYSPORT_STAT_SOFT, similar to
BCM_SYSPORT_STAT_NETDEV, such that bcm_sysport_get_ethtool_stats will read from
the software mib.
Fixes: 60b4ea1781fd ("net: systemport: log RX buffer allocation and RX/TX DMA failures")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Sun, 1 Mar 2015 02:09:16 +0000 (18:09 -0800)]
net: bcmgenet: fix software maintained statistics
Commit
44c8bc3ce39f ("net: bcmgenet: log RX buffer allocation and RX/TX dma
failures") added a few software maintained statistics using
BCMGENET_STAT_MIB_RX and BCMGENET_STAT_MIB_TX. These statistics are read from
the hardware MIB counters, such that bcmgenet_update_mib_counters() was trying
to read from a non-existing MIB offset for these counters.
Fix this by introducing a special type: BCMGENET_STAT_SOFT, similar to
BCMGENET_STAT_NETDEV, such that bcmgenet_get_ethtool_stats will read from the
software mib.
Fixes: 44c8bc3ce39f ("net: bcmgenet: log RX buffer allocation and RX/TX dma failures")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Sat, 28 Feb 2015 10:51:37 +0000 (11:51 +0100)]
rxrpc: don't multiply with HZ twice
rxrpc_resend_timeout has an initial value of 4 * HZ; use it as-is.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Sat, 28 Feb 2015 10:51:36 +0000 (11:51 +0100)]
rxrpc: terminate retrans loop when sending of skb fails
Typo, 'stop' is never set to true.
Seems intent is to not attempt to retransmit more packets after sendmsg
returns an error.
This change is based on code inspection only.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arvid Brodin [Fri, 27 Feb 2015 20:26:03 +0000 (21:26 +0100)]
net/hsr: Fix NULL pointer dereference and refcnt bugs when deleting a HSR interface.
To repeat:
$ sudo ip link del hsr0
BUG: unable to handle kernel NULL pointer dereference at
0000000000000018
IP: [<
ffffffff8187f495>] hsr_del_port+0x15/0xa0
etc...
Bug description:
As part of the hsr master device destruction, hsr_del_port() is called for each of
the hsr ports. At each such call, the master device is updated regarding features
and mtu. When the master device is freed before the slave interfaces, master will
be NULL in hsr_del_port(), which led to a NULL pointer dereference.
Additionally, dev_put() was called on the master device itself in hsr_del_port(),
causing a refcnt error.
A third bug in the same code path was that the rtnl lock was not taken before
hsr_del_port() was called as part of hsr_dev_destroy().
The reporter (Nicolas Dichtel) also said: "hsr_netdev_notify() supposes that the
port will always be available when the notification is for an hsr interface. It's
wrong. For example, netdev_wait_allrefs() may resend NETDEV_UNREGISTER.". As a
precaution against this, a check for port == NULL was added in hsr_dev_notify().
Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Fixes: 51f3c605318b056a ("net/hsr: Move slave init to hsr_slave.c.")
Signed-off-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vaishali Thakkar [Fri, 27 Feb 2015 18:50:59 +0000 (00:20 +0530)]
net: pasemi: Use setup_timer and mod_timer
Use timer API functions setup_timer and mod_timer instead
of structure assignments as they are standard way to set
the timer and to update the expire field of an active timer
respectively.
This is done using Coccinelle and semantic patch used for
this is as follows:
// <smpl>
@@
expression x,y,z,a,b;
@@
-init_timer (&x);
+setup_timer (&x, y, z);
+mod_timer (&a, b);
-x.function = y;
-x.data = z;
-x.expires = b;
-add_timer(&a);
// </smpl>
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vaishali Thakkar [Fri, 27 Feb 2015 18:42:34 +0000 (00:12 +0530)]
net: stmmac: Use setup_timer and mod_timer
Use timer API functions setup_timer and mod_timer instead
of structure assignments as they are standard way to set
the timer and to update the expire field of an active timer
respectively.
This is done using Coccinelle and semantic patch used for
this is as follows:
// <smpl>
@@
expression x,y,z,a,b;
@@
-init_timer (&x);
+setup_timer (&x, y, z);
+mod_timer (&a, b);
-x.function = y;
-x.data = z;
-x.expires = b;
-add_timer(&a);
// </smpl>
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vaishali Thakkar [Fri, 27 Feb 2015 18:32:34 +0000 (00:02 +0530)]
net: 8390: axnet_cs: Use setup_timer and mod_timer
Use timer API functions setup_timer and mod_timer instead
of structure assignments as they are standard way to set
the timer and to update the expire field of an active timer
respectively.
This is done using Coccinelle and semantic patch used for
this is as follows:
// <smpl>
@@
expression x,y,z,a,b;
@@
-init_timer (&x);
+setup_timer (&x, y, z);
+mod_timer (&a, b);
-x.function = y;
-x.data = z;
-x.expires = b;
-add_timer(&a);
// </smpl>
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vaishali Thakkar [Fri, 27 Feb 2015 18:23:03 +0000 (23:53 +0530)]
net: 8390: pcnet_cs: Use setup_timer and mod_timer
Use timer API functions setup_timer and mod_timer instead
of structure assignments as they are standard way to set
the timer and to update the expire field of an active timer
respectively.
This is done using Coccinelle and semantic patch used for
this is as follows:
// <smpl>
@@
expression x,y,z,a,b;
@@
-init_timer (&x);
+setup_timer (&x, y, z);
+mod_timer (&a, b);
-x.function = y;
-x.data = z;
-x.expires = b;
-add_timer(&a);
// </smpl>
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vaishali Thakkar [Fri, 27 Feb 2015 18:10:24 +0000 (23:40 +0530)]
net: smc91c92_cs: Use setup_timer and mod_timer
Use timer API functions setup_timer and mod_timer instead
of structure assignments as they are standard way to set
the timer and to update the expire field of an active timer
respectively.
This is done using Coccinelle and semantic patch used for
this is as follows:
// <smpl>
@@
expression x,y,z,a,b;
@@
-init_timer (&x);
+setup_timer (&x, y, z);
+mod_timer (&a, b);
-x.function = y;
-x.data = z;
-x.expires = b;
-add_timer(&a);
// </smpl>
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yannick Guerrini [Fri, 27 Feb 2015 17:38:46 +0000 (18:38 +0100)]
netxen_nic: Fix trivial typos in comments
Change 'mutliple' to 'multiple'
Change 'Firmare' to 'Firmware'
Signed-off-by: Yannick Guerrini <yguerrini@tomshardware.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yannick Guerrini [Fri, 27 Feb 2015 17:12:16 +0000 (18:12 +0100)]
qlcnic: Fix trivial typo in comment
Change 'Firmare' to 'Firmware'
Signed-off-by: Yannick Guerrini <yguerrini@tomshardware.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 27 Feb 2015 11:19:45 +0000 (13:19 +0200)]
net: ti: cpsw: add hibernation callbacks
Setting a dev_pm_ops suspend/resume pair but not a set of
hibernation functions means those pm functions will not be
called upon hibernation.
Fix this by using SIMPLE_DEV_PM_OPS, which appropriately
assigns the suspend and hibernation handlers and move
cpsw_suspend/resume calbacks under CONFIG_PM_SLEEP
to avoid build warnings.
Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Fri, 27 Feb 2015 11:19:44 +0000 (13:19 +0200)]
net: davinci_mdio: add hibernation callbacks
Setting a dev_pm_ops suspend_late/resume_early pair but not a
set of hibernation functions means those pm functions will
not be called upon hibernation.
Fix this by using SET_LATE_SYSTEM_SLEEP_PM_OPS, which appropriately
assigns the suspend and hibernation handlers and move
davinci_mdio_x callbacks under CONFIG_PM_SLEEP to avoid build warnings.
Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 27 Feb 2015 17:42:50 +0000 (09:42 -0800)]
net: do not use rcu in rtnl_dump_ifinfo()
We did a failed attempt in the past to only use rcu in rtnl dump
operations (commit
e67f88dd12f6 "net: dont hold rtnl mutex during
netlink dump callbacks")
Now that dumps are holding RTNL anyway, there is no need to also
use rcu locking, as it forbids any scheduling ability, like
GFP_KERNEL allocations that controlling path should use instead
of GFP_ATOMIC whenever possible.
This should fix following splat Cong Wang reported :
[ INFO: suspicious RCU usage. ]
3.19.0+ #805 Tainted: G W
include/linux/rcupdate.h:538 Illegal context switch in RCU read-side critical section!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
2 locks held by ip/771:
#0: (rtnl_mutex){+.+.+.}, at: [<
ffffffff8182b8f4>] netlink_dump+0x21/0x26c
#1: (rcu_read_lock){......}, at: [<
ffffffff817d785b>] rcu_read_lock+0x0/0x6e
stack backtrace:
CPU: 3 PID: 771 Comm: ip Tainted: G W 3.19.0+ #805
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
0000000000000001 ffff8800d51e7718 ffffffff81a27457 0000000029e729e6
ffff8800d6108000 ffff8800d51e7748 ffffffff810b539b ffffffff820013dd
00000000000001c8 0000000000000000 ffff8800d7448088 ffff8800d51e7758
Call Trace:
[<
ffffffff81a27457>] dump_stack+0x4c/0x65
[<
ffffffff810b539b>] lockdep_rcu_suspicious+0x107/0x110
[<
ffffffff8109796f>] rcu_preempt_sleep_check+0x45/0x47
[<
ffffffff8109e457>] ___might_sleep+0x1d/0x1cb
[<
ffffffff8109e67d>] __might_sleep+0x78/0x80
[<
ffffffff814b9b1f>] idr_alloc+0x45/0xd1
[<
ffffffff810cb7ab>] ? rcu_read_lock_held+0x3b/0x3d
[<
ffffffff814b9f9d>] ? idr_for_each+0x53/0x101
[<
ffffffff817c1383>] alloc_netid+0x61/0x69
[<
ffffffff817c14c3>] __peernet2id+0x79/0x8d
[<
ffffffff817c1ab7>] peernet2id+0x13/0x1f
[<
ffffffff817d8673>] rtnl_fill_ifinfo+0xa8d/0xc20
[<
ffffffff810b17d9>] ? __lock_is_held+0x39/0x52
[<
ffffffff817d894f>] rtnl_dump_ifinfo+0x149/0x213
[<
ffffffff8182b9c2>] netlink_dump+0xef/0x26c
[<
ffffffff8182bcba>] netlink_recvmsg+0x17b/0x2c5
[<
ffffffff817b0adc>] __sock_recvmsg+0x4e/0x59
[<
ffffffff817b1b40>] sock_recvmsg+0x3f/0x51
[<
ffffffff817b1f9a>] ___sys_recvmsg+0xf6/0x1d9
[<
ffffffff8115dc67>] ? handle_pte_fault+0x6e1/0xd3d
[<
ffffffff8100a3a0>] ? native_sched_clock+0x35/0x37
[<
ffffffff8109f45b>] ? sched_clock_local+0x12/0x72
[<
ffffffff8109f6ac>] ? sched_clock_cpu+0x9e/0xb7
[<
ffffffff810cb7ab>] ? rcu_read_lock_held+0x3b/0x3d
[<
ffffffff811abde8>] ? __fcheck_files+0x4c/0x58
[<
ffffffff811ac556>] ? __fget_light+0x2d/0x52
[<
ffffffff817b376f>] __sys_recvmsg+0x42/0x60
[<
ffffffff817b379f>] SyS_recvmsg+0x12/0x1c
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: 0c7aecd4bde4b7302 ("netns: add rtnl cmd to add and get peer netns ids")
Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reported-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Geert Uytterhoeven [Fri, 27 Feb 2015 16:16:26 +0000 (17:16 +0100)]
sh_eth: Fix lost MAC address on kexec
Commit
740c7f31c094703c ("sh_eth: Ensure DMA engines are stopped before
freeing buffers") added a call to sh_eth_reset() to the
sh_eth_set_ringparam() and sh_eth_close() paths.
However, setting the software reset bit(s) in the EDMR register resets
the MAC Address Registers to zero. Hence after kexec, the new kernel
doesn't detect a valid MAC address and assigns a random MAC address,
breaking DHCP.
Set the MAC address again after the reset in sh_eth_dev_exit() to fix
this.
Tested on r8a7740/armadillo (GETHER) and r8a7791/koelsch (FAST_RCAR).
Fixes: 740c7f31c094703c ("sh_eth: Ensure DMA engines are stopped before freeing buffers")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jaedon Shin [Sat, 28 Feb 2015 02:48:26 +0000 (11:48 +0900)]
net: bcmgenet: fix throughtput regression
This patch adds bcmgenet_tx_poll for the tx_rings. This can reduce the
interrupt load and send xmit in network stack on time. This also
separated for the completion of tx_ring16 from bcmgenet_poll.
The bcmgenet_tx_reclaim of tx_ring[{0,1,2,3}] operative by an interrupt
is to be not more than a certain number TxBDs. It is caused by too
slowly reclaiming the transmitted skb. Therefore, performance
degradation of xmit after
605ad7f ("tcp: refine TSO autosizing").
Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sat, 28 Feb 2015 02:35:35 +0000 (18:35 -0800)]
macvtap: make sure neighbour code can push ethernet header
Brian reported crashes using IPv6 traffic with macvtap/veth combo.
I tracked the crashes in neigh_hh_output()
-> memcpy(skb->data - HH_DATA_MOD, hh->hh_data, HH_DATA_MOD);
Neighbour code assumes headroom to push Ethernet header is
at least 16 bytes.
It appears macvtap has only 14 bytes available on arches
where NET_IP_ALIGN is 0 (like x86)
Effect is a corruption of 2 bytes right before skb->head,
and possible crashes if accessing non existing memory.
This fix should also increase IPv4 performance, as paranoid code
in ip_finish_output2() wont have to call skb_realloc_headroom()
Reported-by: Brian Rak <brak@vultr.com>
Tested-by: Brian Rak <brak@vultr.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 1 Mar 2015 04:33:53 +0000 (23:33 -0500)]
Merge tag 'mac80211-for-davem-2015-02-27' of git://git./linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
A few patches have accumulated, among them the fix for Linus's
four-way-handshake problem. The others are various small fixes
for problems all over, nothing really stands out.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Thu, 26 Feb 2015 22:20:07 +0000 (16:20 -0600)]
net: Verify permission to link_net in newlink
When applicable verify that the caller has permisson to the underlying
network namespace for a newly created network device.
Similary checks exist for the network namespace a network device will
be created in.
Fixes: 317f4810e45e ("rtnl: allow to create device with IFLA_LINK_NETNSID set")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Thu, 26 Feb 2015 22:19:00 +0000 (16:19 -0600)]
net: Verify permission to dest_net in newlink
When applicable verify that the caller has permision to create a
network device in another network namespace. This check is already
present when moving a network device between network namespaces in
setlink so all that is needed is to duplicate that check in newlink.
This change almost backports cleanly, but there are context conflicts
as the code that follows was added in v4.0-rc1
Fixes: b51642f6d77b net: Enable a userns root rtnl calls that are safe for unprivilged users
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
George McCollister [Thu, 26 Feb 2015 21:19:30 +0000 (15:19 -0600)]
drivers: net: cpsw: Set SECURE for dual_emac ucast
Prior to this patch, sending a packet with the source MAC address of one
of the CPSW interfaces to one of the CPSW slave ports while it's configured in
dual_emac mode would update the port_num field of the VLAN/Unicast Address
Table Entry. This would cause it to discard all incoming traffic addressed to
that MAC address, essentially rendering the port useless until the ALE table is
cleared (by starting and stopping the interface or rebooting.)
For example, if eth0 has a MAC address of 90:59:af:8f:43:e9 it will have
an ALE table entry:
00 00 00 00 59 90 02 30 e9 43 8f af
(VLAN Addr vlan_id=2 unicast type=0 port_num=0 addr=90:59:af:8f:43:e9)
If you configure another device with the same MAC address and connect it
to the first CPSW slave port and send some traffic the ALE table entry
becomes:
04 00 00 00 59 90 02 30 e9 43 8f af
(VLAN Addr vlan_id=2 unicast type=0 port_num=1 addr=90:59:af:8f:43:e9)
>From this point forward all incoming traffic addressed to
90:59:af:8f:43:e9 will be dropped.
Setting the SECURE bit for the VLAN/Unicast address table entry for each
interface's MAC address corrects the problem.
Signed-off-by: George McCollister <george.mccollister@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Thu, 26 Feb 2015 16:56:56 +0000 (19:56 +0300)]
niu: fix error handling in niu_class_to_ethflow()
There is a discrepancy here because the niu_class_to_ethflow() returns
zero on failure and one on success but the caller expected zero on
success and negative on failure.
The problem means that we allow the user to pass classes and flow_types
which we don't want. I've looked at it a bit and I don't see it as a
very serious bug.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Wed, 25 Feb 2015 15:31:57 +0000 (16:31 +0100)]
net: smc91x: use run-time configuration on all ARM machines
The smc91x driver traditionally gets configured at compile-time
for whichever hardware it runs on. This no longer works on
ARM as we continue to move to building all-in-one kernels.
Most ARM configurations with this driver already use run-time
configuration through DT or through platform_data, but a
few have not been converted yet.
I've checked all ARM boards that use this driver in their
legacy board files, and converted the ones that were using
compile-time configuration in smc91x.h to behave like the
other ones and provide the interrupt polarity along with
the MMIO configuration (width, stride) at platform device
creation time.
In particular, these combinations were previously selectable
in Kconfig but in fact broken:
- sa1100 assabet plus pleb
- msm combined with any other armv6/v7 platform
- pxa-idp combined with any non-DMA pxa variant
- LogicPD PXA270 combined with any other pxa
- nomadik combined with any other armv4/v5 platform,
e.g. versatile.
None of these seem critical enough to warrant a backport
to stable, but it would be nice to clean this up for good.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
----
I would like the patch to get merged through netdev, after
Robert and/or Linus have verified it on at least some hardware.
There are a few other non-ARM platforms using this driver,
I could do the same patch for those if we want to take
it further.
arch/arm/mach-msm/board-halibut.c | 8 ++++-
arch/arm/mach-msm/board-qsd8x50.c | 8 ++++-
arch/arm/mach-pxa/idp.c | 5 +++
arch/arm/mach-pxa/lpd270.c | 8 ++++-
arch/arm/mach-realview/core.c | 7 ++++
arch/arm/mach-realview/realview_eb.c | 2 +-
arch/arm/mach-sa1100/neponset.c | 6 ++++
arch/arm/mach-sa1100/pleb.c | 7 ++++
drivers/net/ethernet/smsc/smc91x.c | 9 +++--
drivers/net/ethernet/smsc/smc91x.h | 114 ++----------------------------------------------------------
10 files changed, 57 insertions(+), 117 deletions(-)
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 26 Feb 2015 15:20:34 +0000 (07:20 -0800)]
rhashtable: use cond_resched()
If a hash table has 128 slots and 16384 elems, expand to 256 slots
takes more than one second. For larger sets, a soft lockup is detected.
Holding cpu for that long, even in a work queue is a show stopper
for non preemptable kernels.
cond_resched() at strategic points to allow process scheduler
to reschedule us.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 27 Feb 2015 22:48:17 +0000 (17:48 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net
Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates 2015-02-26
This series contains fixes for i40e and i40evf only.
Alexey Khoroshilov found a possible leak of 'cmd_buf' when copy_from_user()
failed in i40e_dbg_command_write(), so resolved by calling kfree().
Shannon provides a fix to ensure the shift and bitwise precedences do not
work backwards for us by adding parans. Fixed the driver by preventing
the driver from allowing stray interrupts or causing system logs from
un-handled interrupts by combining the ICR0 shutdown with the standard
interrupt shutdown and add the interrupt clearing to the PCI shutdown
path. Fixed an issue where a NVM write times out before a transaction
can complete, so Shannon added logic to make another attempt by
reacquiring the semaphore, then retry the write, if the one retry fails,
we will then give up. Adds checks to pointers before their use to ensure
we do not try to dereference NULL pointers when returning values from the
AdminQ calls.
Akeem adds a check to bail out if the device is already down when checking
for Tx hang subtask.
Anjali fixes TSO with more than 8 frags per segment issue. The hardware
has some limitations which the driver needs to adhere to:
1) no more than 8 descriptors per packet on the wire
2) no header can span more than 3 descriptors
If one of these events happens, the hardware will generate an internal
error and freeze the Tx queue, so Anjali fixes this by linearizes the skb
to avoid these situations. Fixed an issue where the per Traffic Class
queue count was higher than queues enabled, which will fix a warning
with multiple function mode where systems regularly have more cores than
vectors. Fixed TCP/IPv6 over VXLAN Tx checksum offload, where we were
checking the outer protocol flags and deciding the flow for the inner
header.
Jesse fixes a race condition in the transmit hang detection. Before we
were having issues of false Tx hang detection, no the driver makes more
direct with the checks for progress forward by directly checking the head
write back address and tail register when determining progress. This
avoids Tx hangs where the software gets behind, because we are directly
checking hardware state when determining a hang state.
Neerav fixes the transmit ring Qset handle when DCB reconfigures. The issue
was when DCB is reconfigured to a single traffic class (TC) and the driver
did not reset the Tx ring Qset handle to correct the mapping, which caused
the Tx queue to disable timeouts. Also as part of DCB reconfiguration flow
if the Tx queue disable times out, then issue a PF reset to do some level
of recovery.
Mitch stops flow director on shutdown because, in some cases, the hardware
would continue to try to access the FDIR ring after entering D3Hot state,
which would cause either PCIe errors or NMIs, depending upon the system
configuration.
* NOTE * I have verified that this series of patches for net will not cause
any merge issues when you sync up your net tree with your net-next tree.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Lendacky, Thomas [Wed, 25 Feb 2015 19:50:12 +0000 (13:50 -0600)]
amd-xgbe: Request IRQs only after driver is fully setup
It is possible that the hardware may not have been properly shutdown
before this driver gets control, through use by firmware, for example.
Until the driver is loaded, interrupts associated with the hardware
could go pending. When the IRQs are requested napi support has not
been initialized yet, but the ISR will get control and schedule napi
processing resulting in a kernel panic because the poll routine has not
been set.
Adjust the code so that the driver is fully ready to handle and process
interrupts as soon as the IRQs are requested. This involves requesting
and freeing IRQs during start and stop processing and ordering the napi
add and delete calls appropriately.
Also adjust the powerup and powerdown routines to match the start and
stop routines in regards to the ordering of tasks, including napi
related calls.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Luca Ceresoli [Wed, 25 Feb 2015 23:58:12 +0000 (00:58 +0100)]
net: asix: add support for the Sitecom LN-028 USB adapter
Just another AX88178-based 10/100/1000 USB-to-Ethernet dongle. This one
shows up in lsusb as: "Sitecom Europe B.V. LN-028 Network USB 2.0 Adapter".
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Cc: Francois Romieu <romieu@fr.zoreil.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 27 Feb 2015 21:06:21 +0000 (16:06 -0500)]
Merge branch 'rhashtable'
Daniel Borkmann says:
====================
rhashtable updates
As discussed, I'm sending out rhashtable fixups for -net.
I have a couple of more patches I was working on last week pending,
i.e. to get rid of ht->nelems and ht->shift atomic operations which
speed-up pure insertions/deletions, e.g. on my laptop I have 2 threads,
inserting 7M entries each, that will reduce insertion time from ~1,450 ms
to 865 ms (performance should even be better after removing the
grow/shrink indirections). I guess that however is rather something
for net-next.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Wed, 25 Feb 2015 15:31:54 +0000 (16:31 +0100)]
rhashtable: remove indirection for grow/shrink decision functions
Currently, all real users of rhashtable default their grow and shrink
decision functions to rht_grow_above_75() and rht_shrink_below_30(),
so that there's currently no need to have this explicitly selectable.
It can/should be generic and private inside rhashtable until a real
use case pops up. Since we can make this private, we'll save us this
additional indirection layer and can improve insertion/deletion time
as well.
Reference: http://patchwork.ozlabs.org/patch/443040/
Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Wed, 25 Feb 2015 15:31:53 +0000 (16:31 +0100)]
rhashtable: unconditionally grow when max_shift is not specified
While commit
c0c09bfdc415 ("rhashtable: avoid unnecessary wakeup for
worker queue") rightfully moved part of the decision making of
whether we should expand or shrink from the expand/shrink functions
themselves into insert/delete functions in order to avoid unnecessary
worker wake-ups, it however introduced a regression by doing so.
Before that change, if no max_shift was specified (= 0) on rhashtable
initialization, rhashtable_expand() would just grow unconditionally
and lets the available memory be the limiting factor. After that
change, if no max_shift was specified, there would be _no_ expansion
step at all.
Given that netlink and tipc have a max_shift specified, it was not
visible there, but Josh Hunt reported that if nft that starts out
with a default element hint of 3 if not otherwise provided, would
slow i.e. inserts down trememdously as it cannot grow larger to
relax table occupancy.
Given that the test case verifies shrinks/expands manually, we also
must remove pointer to the helper functions to explicitly avoid
parallel resizing on insertions/deletions. test_bucket_stats() and
test_rht_lookup() could also be wrapped around rhashtable mutex to
explicitly synchronize a walk from resizing, but I think that defeats
the actual test case which intended to have explicit test steps,
i.e. 1) inserts, 2) expands, 3) shrinks, 4) deletions, with object
verification after each stage.
Reported-by: Josh Hunt <johunt@akamai.com>
Fixes: c0c09bfdc415 ("rhashtable: avoid unnecessary wakeup for worker queue")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Ying Xue <ying.xue@windriver.com>
Cc: Josh Hunt <johunt@akamai.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael S. Tsirkin [Wed, 25 Feb 2015 14:20:01 +0000 (15:20 +0100)]
vhost: drop hard-coded num_buffers size
The 2 that we use for copy_to_iter comes from sizeof(u16),
it used to be that way before the iov iter update.
Fix it up, making it obvious the size of stack access
is right.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael S. Tsirkin [Wed, 25 Feb 2015 14:19:28 +0000 (15:19 +0100)]
vhost: cleanup iterator update logic
Recent iterator-related changes in vhost made it
harder to follow the logic fixing up the header.
In fact, the fixup always happens at the same
offset: sizeof(virtio_net_hdr): sometimes the
fixup iterator is updated by copy_to_iter,
sometimes-by iov_iter_advance.
Rearrange code to make this obvious.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Wed, 25 Feb 2015 13:36:12 +0000 (16:36 +0300)]
rocker: silence shift wrapping warning
"val" is declared as a u64 so static checkers complain that this shift
can wrap. I don't have the hardware but probably it's doesn't have over
31 ports. Still we may as well silence the warning even if it's not a
real bug.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Wed, 25 Feb 2015 13:35:32 +0000 (16:35 +0300)]
rocker: add a check for NULL in rocker_probe_ports()
Make sure kmalloc() succeeds.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hariprasad Shenai [Wed, 25 Feb 2015 11:20:04 +0000 (16:50 +0530)]
cxgb4: Fix PCI-E Memory window interface for big-endian systems
When doing reads and writes to adapter memory via the PCI-E Memory Window
interface, data gets swizzled on 4-byte boundaries on Big-Endian systems
because we need to account for the register read/write interface which
incorporates a swizzle onto the Little-Endian PCI-E Bus.
Based on original work by Casey Leedom <leedom@chelsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sujith Sankar [Wed, 25 Feb 2015 09:56:55 +0000 (15:26 +0530)]
enic: do notify_check before returning credits
We should complete notify_check before returning the credits. Once we return the
credits, adaptor may access the notify data.
Signed-off-by: Sujith Sankar <ssujith@cisco.com>
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jouni Malinen [Thu, 26 Feb 2015 13:50:50 +0000 (15:50 +0200)]
mac80211: Send EAPOL frames at lowest rate
The current minstrel_ht rate control behavior is somewhat optimistic in
trying to find optimum TX rate. While this is usually fine for normal
Data frames, there are cases where a more conservative set of retry
parameters would be beneficial to make the connection more robust.
EAPOL frames are critical to the authentication and especially the
EAPOL-Key message 4/4 (the last message in the 4-way handshake) is
important to get through to the AP. If that message is lost, the only
recovery mechanism in many cases is to reassociate with the AP and start
from scratch. This can often be avoided by trying to send the frame with
more conservative rate and/or with more link layer retries.
In most cases, minstrel_ht is currently using the initial EAPOL-Key
frames for probing higher rates and this results in only five link layer
transmission attempts (one at high(ish) MCS and four at MCS0). While
this works with most APs, it looks like there are some deployed APs that
may have issues with the EAPOL frames using HT MCS immediately after
association. Similarly, there may be issues in cases where the signal
strength or radio environment is not good enough to be able to get
frames through even at couple of MCS 0 tries.
The best approach for this would likely to be to reduce the TX rate for
the last rate (3rd rate parameter in the set) to a low basic rate (say,
6 Mbps on 5 GHz and 2 or 5.5 Mbps on 2.4 GHz), but doing that cleanly
requires some more effort. For now, we can start with a simple one-liner
that forces the minimum rate to be used for EAPOL frames similarly how
the TX rate is selected for the IEEE 802.11 Management frames. This does
result in a small extra latency added to the cases where the AP would be
able to receive the higher rate, but taken into account how small number
of EAPOL frames are used, this is likely to be insignificant. A future
optimization in the minstrel_ht design can also allow this patch to be
reverted to get back to the more optimized initial TX rate.
It should also be noted that many drivers that do not use minstrel as
the rate control algorithm are already doing similar workarounds by
forcing the lowest TX rate to be used for EAPOL frames.
Cc: stable@vger.kernel.org
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Shannon Nelson [Sat, 21 Feb 2015 06:45:28 +0000 (06:45 +0000)]
i40e: check pointers before use
Make sure we don't try to dereference NULL pointers when returning values
from the AdminQ calls.
Change-ID: Ia6694f2f415d50acf0aba063c863568742799aff
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Shannon Nelson [Sat, 21 Feb 2015 06:45:10 +0000 (06:45 +0000)]
i40e: catch NVM write semaphore timeout and retry
In some circumstances, a multi-write transaction takes longer than the
default 3 minute timeout on the write semaphore. If the write failed with
an EBUSY status, this is likely the problem, so here we try to reacquire
the semaphore then retry the write. We only do one retry, then give up.
Change-ID: I1c8be60688acc2f39573839579baf601207c4a36
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mitch A Williams [Sat, 21 Feb 2015 06:44:51 +0000 (06:44 +0000)]
i40e: stop flow director on shutdown
In some cases, the hardware would continue to try to access the FDIR
ring after entering D3Hot state, which would cause either PCIe errors or
NMIs, depending upon system configuration.
Explicitly stop FDIR in our shutdown routine to eliminate this
possibility.
Change-ID: I1bd9fc7fd8f151fe24cad132ac9adddab923e3af
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Shannon Nelson [Sat, 21 Feb 2015 06:44:33 +0000 (06:44 +0000)]
i40e: disconnect irqs on shutdown
Combine the ICR0 shutdown with the standard interrupt shutdown, and
add the interrupt clearing to the PCI shutdown path.
This prevents the driver from allowing stray interrupts or causing
system logs from un-handled interrupts.
Change-ID: I48f6ab95cad7f8ca77c1f26c92a51cc1034ced43
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Anjali Singhai [Sat, 21 Feb 2015 06:44:16 +0000 (06:44 +0000)]
i40evf: TCP/IPv6 over Vxlan Tx checksum offload fix
We were checking the outer Protocol flags and deciding the flow for
inner header. This patch fixes that.
This fixes the Tx checksum offload for TCP/IPv6 over vxlan.
Change-ID: I837aaea921d34f71b24c2bc32aaadea5001ddf78
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Parikh, Neerav [Sat, 21 Feb 2015 06:43:55 +0000 (06:43 +0000)]
i40e: Issue a PF reset if Tx queue disable timeout
As part of DCB reconfiguration flow if the Tx queue disable times out
then issue a PF reset to do some level of recovery.
Change-ID: I7550021c55bff355351c0365e61e1f05fcaff46d
Signed-off-by: Neerav Parikh <neerav.parikh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Parikh, Neerav [Sat, 21 Feb 2015 06:43:37 +0000 (06:43 +0000)]
i40e: Fix the Tx ring qset handle when DCB reconfigures
When DCB is reconfigured to single TC the driver did not reset the
Tx ring Qset handle to the correct mapping; which caused Tx queue
disable timeouts.
Change-ID: I4da5915ec92a83c281b478d653fae6ef1b72edfe
Signed-off-by: Neerav Parikh <neerav.parikh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Anjali Singhai [Sat, 21 Feb 2015 06:43:19 +0000 (06:43 +0000)]
i40e: Fix the case where per TC queue count was higher than queues enabled
When the driver or hardware gets less interrupt vectors than the actual
number of CPU cores, limit the queue count for the priority queue
traffic class (TC) queues.
This will fix a warning with multiple function mode where systems
regularly have more cores than vectors.
Also add extra comment for readability.
Change-ID: I4f02226263aa3995e1f5ee5503eac0cd6ee12fbd
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jesse Brandeburg [Tue, 24 Feb 2015 05:26:03 +0000 (05:26 +0000)]
i40e: fix race in hang check
The driver was having some issues with false Tx hang detection. This
makes the driver a little more direct with the checks for progress
forward by directly checking the head write back address and tail register
when determining progress. This avoids Tx hangs where the software
gets behind, because we are directly checking hardware state when
determining hang state.
Change-ID: I774f0e861c9e8ab5ccb213634100fe15440ae24a
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Anjali Singhai [Sat, 21 Feb 2015 06:42:35 +0000 (06:42 +0000)]
i40e: Fix TSO with more than 8 frags per segment issue
The hardware has some limitations the driver needs to adhere to,
that we found in extended testing.
1) no more than 8 descriptors per packet on the wire
2) no header can span more than 3 descriptors
If one of these events occurs, the hardware will generate an internal
error and freeze the Tx queue.
This patch linearizes the skb to avoid these situations.
Change-ID: I37dab7d3966e14895a9663ec4d0aaa8eb0d9e115
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Akeem G Abodunrin [Sat, 21 Feb 2015 06:42:15 +0000 (06:42 +0000)]
i40e: Don't check for Tx hang when PF down
This patch adds check to bail out if device is already down when checking
for Tx hang subtask.
Change-ID: I3853fb7a6d11cb9a4c349b687cb25c15b19977a0
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Shannon Nelson [Sat, 21 Feb 2015 06:41:47 +0000 (06:41 +0000)]
i40e: fix shift precedence issue
Add parens to make sure the shift and bitwise precedences don't work backwards
for us.
Change-ID: I60c10ef4fad6bc654522b9d8a53da2e270a0f268
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Alexey Khoroshilov [Sat, 21 Feb 2015 07:32:47 +0000 (07:32 +0000)]
i40e: Fix memory leak at failure path in i40e_dbg_command_write()
The patch fixes a leak of 'cmd_buf' when copy_from_user() failed
in i40e_dbg_command_write().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Andy Gospodarek [Wed, 25 Feb 2015 22:00:16 +0000 (17:00 -0500)]
MAINTAINERS: update my email address
I have been signing off on patches with this address so I'll change it.
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Lendacky [Tue, 24 Feb 2015 16:47:49 +0000 (10:47 -0600)]
amd-xgbe-phy: PHY KX/KR mode differences
The PHY requires different settings for the Decision Feedback Analyzer
(DFE) when running in KX mode vs. KR mode. Update the code to change
these settings when changing modes in order to provide a more stable
link.
Additionally, adjust the 10GbE PQ skew default setting to a more sane
value.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Emmanuel Grumbach [Mon, 23 Feb 2015 00:40:07 +0000 (02:40 +0200)]
iwlwifi: fix max_ht_ampdu_exponent for older devices
The commit below didn't update the max_ht_ampdu_exponent
for the devices listed in iwl-[1-6]000.c which, in result,
became 0 instead of 8K. This reduced the size of the Rx
AMPDU from 64K to 8K which had an impact in the Rx
throughput. One user reported that because of this, his
downstream throughput droppped by a half.
CC: <stable@vger.kernel.org> [3.19]
Fixes: c064ddf318aa ("iwlwifi: change max HT and VHT A-MPDU exponent")
Reported-and-tested-by: Valentin Manea <linux-wireless@mrs.ro>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Yannick Guerrini [Tue, 24 Feb 2015 12:03:51 +0000 (13:03 +0100)]
r8169: Fix trivial typo in rtl_check_firmware
Change 'firwmare' to 'firmware'
Signed-off-by: Yannick Guerrini <yguerrini@tomshardware.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Vrabel [Tue, 24 Feb 2015 11:17:59 +0000 (11:17 +0000)]
xen-netback: release pending index before pushing Tx responses
If the pending indexes are released /after/ pushing the Tx response
then a stale pending index may be used if a new Tx request is
immediately pushed by the frontend. The may cause various WARNINGs or
BUGs if the stale pending index is actually still in use.
Fix this by releasing the pending index before pushing the Tx
response.
The full barrier for the pending ring update is not required since the
the Tx response push already has a suitable write barrier.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Drozdov [Tue, 24 Feb 2015 05:18:28 +0000 (08:18 +0300)]
af_packet: don't pass empty blocks for PACKET_V3
Before
da413eec729d ("packet: Fixed TPACKET V3 to signal poll when block is
closed rather than every packet") poll listening for an af_packet socket was
not signaled if there was no packets to process. After the patch poll is
signaled evety time when block retire timer expires. That happens because
af_packet closes the current block on timeout even if the block is empty.
Passing empty blocks to the user not only wastes CPU but also wastes ring
buffer space increasing probability of packets dropping on small timeouts.
Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>
Cc: Dan Collins <dan@dcollins.co.nz>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Guy Harris <guy@alum.mit.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sasha Levin [Tue, 24 Feb 2015 19:14:35 +0000 (14:14 -0500)]
rtnetlink: avoid 0 sized arrays
Arrays (when not in a struct) "shall have a value greater than zero".
GCC complains when it's not the case here.
Fixes: ba7d49b1f0 ("rtnetlink: provide api for getting and setting slave info")
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Slaby [Thu, 19 Feb 2015 11:57:40 +0000 (12:57 +0100)]
mac80211/minstrel: fix !x!=0 confusion
Commit
06d961a8e210 ("mac80211/minstrel: use the new rate control API")
inverted the condition 'if (msr->sample_limit != 0)' to
'if (!msr->sample_limit != 0)'. But it is confusing both to people and
compilers (gcc5):
net/mac80211/rc80211_minstrel.c: In function 'minstrel_get_rate':
net/mac80211/rc80211_minstrel.c:376:26: warning: logical not is only applied to the left hand side of comparison
if (!msr->sample_limit != 0)
^
Let there be only 'if (!msr->sample_limit)'.
Fixes: 06d961a8e210 ("mac80211/minstrel: use the new rate control API")
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Junjie Mao [Wed, 28 Jan 2015 02:03:26 +0000 (10:03 +0800)]
cfg80211: calls nl80211_exit on error
nl80211_exit should be called in cfg80211_init if nl80211_init succeeds
but regulatory_init or create_singlethread_workqueue fails.
Signed-off-by: Junjie Mao <junjie_mao@yeah.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Jason Abele [Wed, 18 Feb 2015 00:10:41 +0000 (16:10 -0800)]
cfg80211: fix n_reg_rules to match world_regdom
There are currently 8 rules in the world_regdom, but only the first 6
are applied due to an incorrect value for n_reg_rules. This causes
channels 149-165 and 60GHz to be disabled.
Signed-off-by: Jason Abele <jason@aether.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Tue, 24 Feb 2015 09:56:42 +0000 (10:56 +0100)]
nl80211: fix memory leak in monitor flags parsing
If monitor flags parsing results in active monitor but that
isn't supported, the already allocated message is leaked.
Fix this by moving the allocation after this check.
Reported-by: Christian Engelmayer <cengelma@gmx.at>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Samuel Tan [Mon, 9 Feb 2015 19:29:15 +0000 (21:29 +0200)]
nl80211: use loop index as type for net detect frequency results
We currently add nested members of the NL80211_ATTR_SCAN_FREQUENCIES
as NLA_U32 attributes of type NL80211_ATTR_WIPHY_FREQ in
cfg80211_net_detect_results. However, since there can be an arbitrary number of
frequency results, we should use the loop index of the loop used to add the
frequency results to NL80211_ATTR_SCAN_FREQUENCIES as the type (i.e. nla_type)
for each result attribute, rather than a fixed type.
This change is in line with how nested members are added to
NL80211_ATTR_SCAN_FREQUENCIES in the functions nl80211_send_wowlan_nd and
nl80211_add_scan_req.
Signed-off-by: Samuel Tan <samueltan@chromium.org>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Eliad Peller [Sun, 8 Feb 2015 10:36:07 +0000 (12:36 +0200)]
mac80211: clear sdata->radar_required
If ieee80211_vif_use_channel() fails, we have to clear
sdata->radar_required (which we might have just set).
Failing to do it results in stale radar_required field
which prevents starting new scan requests.
Reported-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Eliad Peller <eliad@wizery.com>
[use false instead of 0]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Bob Copeland [Thu, 5 Feb 2015 13:45:43 +0000 (08:45 -0500)]
mac80211_hwsim: fix error handling in tx_frame_nl
Correct two problems with the error handling when using the netlink
forwarding API: first, the netlink skb is never freed if nla_put()
fails; and second, genlmsg_unicast() can fail if the netlink socket
is full. In the latter case, the corresponding data skb is not counted
as a drop and userspace programs like wmediumd will see TCP stalls
due to lost packets.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Marcelo Leitner [Mon, 23 Feb 2015 14:17:13 +0000 (11:17 -0300)]
ipv6: addrconf: validate new MTU before applying it
Currently we don't check if the new MTU is valid or not and this allows
one to configure a smaller than minimum allowed by RFCs or even bigger
than interface own MTU, which is a problem as it may lead to packet
drops.
If you have a daemon like NetworkManager running, this may be exploited
by remote attackers by forging RA packets with an invalid MTU, possibly
leading to a DoS. (NetworkManager currently only validates for values
too small, but not for too big ones.)
The fix is just to make sure the new value is valid. That is, between
IPV6_MIN_MTU and interface's MTU.
Note that similar check is already performed at
ndisc_router_discovery(), for when kernel itself parses the RA.
Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlastimil Setka [Mon, 23 Feb 2015 17:30:29 +0000 (11:30 -0600)]
altera_tse: Fixes in NAPI and interrupt handling paths
Incorrect NAPI polling caused WARNING at net/core/dev.c net_rx_action.
Some stability issues were also seen at high throughput and system
load before this patch.
This patch contains several changes in altera_tse_main.c:
- tse_rx() is fixed to not process more than `limit` frames
- tse_poll() is refactored to match NAPI logic
- only received frames are counted for return value
- removed bogus condition `(rxcomplete >= budget || txcomplete > 0)`
- replace by: if (rxcomplete < budget) -> call __napi_complete and enable irq
- altera_isr()
- replace spin_lock_irqsave() by spin_lock() - we are in isr
- use spinlocks just over irq manipulation, not over __napi_schedule
- reset IRQ first, then disable and schedule napi
This is a cleaned up resubmission from Vlastimil's recent submission.
Signed-off-by: Vlastimil Setka <setka@vsis.cz>
Signed-off-by: Roman Pisl <rpisl@kky.zcu.cz>
Signed-off-by: Vince Bridgers <vbridger@opensource.altera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlastimil Setka [Mon, 23 Feb 2015 17:27:37 +0000 (11:27 -0600)]
altera_tse: Correct typo in obtaining tx_fifo_depth from devicetree
This patch corrects a typo in the way tx_fifo_depth is read from the
devicetree. This patch was submitted by Vlastimil about a week ago,
and is now cleaned up and resubmitted.
Signed-off-by: Vlastimil Setka <setka@vsis.cz>
Signed-off-by: Vince Bridgers <vbridger@opensource.altera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Catalin Marinas [Mon, 23 Feb 2015 18:12:56 +0000 (18:12 +0000)]
net: compat: Ignore MSG_CMSG_COMPAT in compat_sys_{send, recv}msg
With commit
a7526eb5d06b (net: Unbreak compat_sys_{send,recv}msg), the
MSG_CMSG_COMPAT flag is blocked at the compat syscall entry points,
changing the kernel compat behaviour from the one before the commit it
was trying to fix (
1be374a0518a, net: Block MSG_CMSG_COMPAT in
send(m)msg and recv(m)msg).
On 32-bit kernels (!CONFIG_COMPAT), MSG_CMSG_COMPAT is 0 and the native
32-bit sys_sendmsg() allows flag 0x80000000 to be set (it is ignored by
the kernel). However, on a 64-bit kernel, the compat ABI is different
with commit
a7526eb5d06b.
This patch changes the compat_sys_{send,recv}msg behaviour to the one
prior to commit
1be374a0518a.
The problem was found running 32-bit LTP (sendmsg01) binary on an arm64
kernel. Arguably, LTP should not pass 0xffffffff as flags to sendmsg()
but the general rule is not to break user ABI (even when the user
behaviour is not entirely sane).
Fixes: a7526eb5d06b (net: Unbreak compat_sys_{send,recv}msg)
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fabian Frederick [Mon, 23 Feb 2015 17:38:24 +0000 (18:38 +0100)]
irda: replace current->state by set_current_state()
Use helper functions to access current->state.
Direct assignments are prone to races and therefore buggy.
current->state = TASK_RUNNING can be replaced by __set_current_state()
Thanks to Peter Zijlstra for the exact definition of the problem.
Suggested-By: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jamal Hadi Salim [Mon, 23 Feb 2015 13:17:12 +0000 (08:17 -0500)]
net: sched: export tc_connmark.h so it is uapi accessible
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eyal Shapira [Mon, 23 Feb 2015 08:02:23 +0000 (10:02 +0200)]
iwlwifi: mvm: disable beamformer unless FW supports it
Current FW is declaring support for BFER in ucode_capa.capa
but it doesn't really support it unless the new LQ_SS_PARAMS API
is supported as well. Avoid publishing BFER in our VHT caps
if FW doesn't support.
Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>