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82598/82599 can support EITR == 0, which allows for the
absolutely lowest latency setting in the hardware. This disables
writeback batching and anything else that relies upon a delayed
interrupt. This patch enables the feature of "override" when a
user sets rx-usecs to zero, the driver will respect that setting
over using RSC, and automatically disable RSC. If rx-usecs is
used to set the EITR value to 0, then the driver should disable
LRO (aka RSC) internally until EITR is set to non-zero again.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no need to increment nr_frags because skb_fill_page_desc increments
it.
Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no need to increment nr_frags because skb_fill_page_desc increments
it.
Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/e100.c
drivers/net/e1000e/netdev.c
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In some Power7 platforms, when using VIOS (Virtual I/O Server), we
need to wait longer for control packets to finish transfer during
initialization.
Without this change, initialization may fail prematurely.
Signed-off-by: Wen Xiong <wenxiong@us.ibm.com>
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Acked-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Prompted by a previous patch submitted by Matthew Garret <mjg@redhat.com>,
further digging into errata documentation reveals the current enabling or
disabling of ASPM L0s and L1 states for certain parts supported by this
driver are incorrect. 82571 and 82572 should always disable L1. For
standard frames, 82573/82574/82583 can enable L1 but L0s must be disabled,
and for jumbo frames 82573/82574 must disable L1. This allows for some
parts to enable L1 in certain configurations leading to better power
savings.
Also according to the same errata, Early Receive (ERT) should be disabled
on 82573 when using jumbo frames.
Cc: Matthew Garret <mjg@redhat.com>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The PHY laser is still on during driver init. It's allowing
garbage to hit our FIFO, which eventually can cause the entire
device to die. Power down the laser while setting up the device,
and re-enable the laser before getting link.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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78f1cd02457252e1ffbc6caa44a17424a45286b8 ("fix broken register writes")
does not work for Al Viro's r8169 (XID 18000000).
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Few (6) network drivers enable mwi explicitly. Fewer worry about a
failure.
It is not a fix but it should avoid some annoyance like
http://bugzilla.kernel.org/show_bug.cgi?id=15454
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Conrad Kostecki <conikost@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the same type of configurable debug messages to libertas_tf as
already exist in the libertas driver. This has facilitated creation
of a interface specification and will facilitate future development
of this driver.
Signed-off-by: Steve deRosier <steve@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Remove redundant check for RT2872.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Restore the rfcsr initialization for RT305x SoC devices which was removed
by "rt2x00: Finish rt3070 support in rt2800 register initialization.".
This fixes the rx path on SoC devices.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Fix a typo in a comment in rt2800.h. Instead of replacing the wrong
hexvalue (0x171c) with the correct one (0x1718) just use the appropriate
readable define.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Get closer to what the ralink driver does by setting the rf register 13
to tx_power2 during channel switch.
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>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Disable HT40 support for now as it causes rx problems with HT40 capable
11n APs (when mac80211 enables HT40, rx is completely disfunctional).
Once the rt2800 HT code is capable of using HT40 we should enable the
flag again.
I only tested this patch with a rt305x SoC device, nevertheless the
patch disables HT40 also on PCI and USB rt2800 devices.
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>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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All commands to the target are disabled when the device
is unplugged, but a normal module unload has to be
differentiated from this case, as we could still receive
data in the RX endpoint. Fix this by checking if the
device is attached or not.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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My patch "ath9k_htc: Handle WMI timeouts properly" introduced
a race condition in WMI command processing. The last issued command
should be stored _before_ issuing a WMI command. Not doing this
would result in the WMI event IRQ dropping correct command responses
as invalid.
Fix this race by storing the command id correctly.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Completion of WMI commands take a longer time
on some platforms. Increase the timeout value
to handle this.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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When handling the REGIN callback, processing
the incoming data first should be the preferred
mode of operation. Allocation of a new SKB may fail,
in which case, the URB will not be resubmitted.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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So, apparently there is a USB reboot command
that the target accepts. Using this instead of
usb_reset_device() fixes the issue of "descriptor read error"
that pops up on repeated load/unload.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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In the TX callback, the HTC layer has to pass the
priv pointer that was registered during service initialization.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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There is no reason to disable the PHY Error / MIB counters
when the module is being unloaded.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This patch fixes a code segment in configpciepowersave()
to make use of multiple register writes.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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When the USB device has been unplugged, there is
no point in trying to send commands to the target.
Fix this by denying all WMI commands in such a case.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This patch simplifies URB management for transmission,
by removing the 'FLUSH' variable (which is not needed,
since we can determine if the URB has been killed by
looking at the URB status), and also handling the STOP
case properly.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This patch fixes a recently introduced use-after-free regression
from "p54pci: prevent stuck rx-ring on slow system".
Hans de Goede reported a use-after-free regression:
>BUG: unable to handle kernel paging request at 6b6b6b6b
>IP: [<e122284a>] p54p_check_tx_ring+0x84/0xb1 [p54pci]
>*pde = 00000000
>Oops: 0000 [#1] SMP
>EIP: 0060:[<e122284a>] EFLAGS: 00010286 CPU: 0
>EIP is at p54p_check_tx_ring+0x84/0xb1 [p54pci]
>EAX: 6b6b6b6b EBX: df10b170 ECX: 00000003 EDX: 00000001
>ESI: dc471500 EDI: d8acaeb0 EBP: c098be9c ESP: c098be84
> DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
>Process swapper (pid: 0, ti=c098a000 task=c09ccfe0 task.ti=c098a000)
>Call Trace:
> [<e1222b02>] ? p54p_tasklet+0xaa/0xb5 [p54pci]
> [<c0440568>] ? tasklet_action+0x78/0xcb
> [<c0440ed3>] ? __do_softirq+0xbc/0x173
Quote from comment #17:
"The problem is the innocent looking moving of the tx processing to
after the rx processing in the tasklet. Quoting from the changelog:
This patch does it the same way, except that it also prioritize
rx data processing, simply because tx routines *can* wait.
This is causing an issue with us referencing already freed memory,
because some skb's we transmit, we immediately receive back, such
as those for reading the eeprom (*) and getting stats.
What can happen because of the moving of the tx processing to after
the rx processing is that when the tasklet first runs after doing a
special skb tx (such as eeprom) we've already received the answer
to it.
Then the rx processing ends up calling p54_find_and_unlink_skb to
find the matching tx skb for the just received special rx skb and
frees the tx skb.
Then after the processing of the rx skb answer, and thus freeing
the tx skb, we go process the completed tx ring entires, and then
dereference the free-ed skb, to see if it should free free-ed by
p54p_check_tx_ring()."
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=583623
Bug-Identified-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Commit aa395145 (net: sk_sleep() helper) missed three files in the
conversion.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Hans de Goede identified a bug in p54p_check_tx_ring:
there are two ring indices. 1 => tx data and 3 => tx management.
But the old code had a constant "1" and this resulted in spurious
dma unmapping failures.
Cc: stable@kernel.org
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=583623
Bug-Identified-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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tg3: Fix INTx fallback when MSI fails
MSI setup changes the value of irq_vec in struct tg3 *tp.
This attribute must be taken into account and restored before
we try to do a new request_irq for INTx fallback.
In powerpc, the original code was leading to an EINVAL return within
request_irq, because the driver was trying to use the disabled MSI
virtual irq number instead of tp->pdev->irq.
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Nothing stops the workqueue being left to run in parallel with close or a
few other operations. This causes double unmaps and the like.
See kerneloops.org #1041230 for an example
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sky2 hardware supports hardware receive hash calculation.
Now that Receive Packet Steering is available, add support
to enable it.
This version does not depend on CONFIG_RPS. Also set_flags rejects
all values except RXHASH, so driver won't have to change next time
somebody adds a new one.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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gianfar driver may pass NULL pointer to the of_translate_address(),
which may lead to a kernel oops. Fix this by using of_iomap(), which
is also much simpler and shorter.
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Old P1020RDB device trees were not specifing tbipa address for
MDIO nodes, which is now causing this kernel oops:
...
eth2: TX BD ring size for Q[6]: 256
eth2: TX BD ring size for Q[7]: 256
Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xc0015504
Oops: Kernel access of bad area, sig: 11 [#1]
...
NIP [c0015504] memcpy+0x3c/0x9c
LR [c000a9f8] __of_translate_address+0xfc/0x21c
Call Trace:
[df839e00] [c000a94c] __of_translate_address+0x50/0x21c (unreliable)
[df839e50] [c01a33e8] get_gfar_tbipa+0xb0/0xe0
...
The old device trees are buggy, though having a dead ethernet is
better than a dead kernel, so fix the issue by using of_iomap().
Also, a somewhat similar issue exist in the probe() routine, though
there the oops is only a possibility. Nonetheless, fix it too.
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicts:
drivers/net/wireless/ath/ath9k/phy.c
drivers/net/wireless/iwlwifi/iwl-6000.c
drivers/net/wireless/iwlwifi/iwl-debugfs.c
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Add support to bnx2x to extract Toeplitz hash out of the receive
descriptor for use in skb->rxhash.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sky2 status ring must be big enough to handle worst case number
of status messages. It was being oversized (to handle dual port cards),
and excessive number of tx ring entries were allowed. This patch reduces
the footprint and makes sure the value is enough.
Later patch to add RSS increases the number of possible Rx status elements.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Change magic numbers to identifiers for X25 interface.
Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Acked-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Change magic numbers to identifiers for X25 interface.
Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Change magic numbers to identifiers for X25 interface.
Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Change magic numbers to identifiers for X25 interface.
Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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Update version to indicate IDC(fw recovery) changes.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We do netif_device_attach, even if resource allocation fails.
Driver callbacks can be called, if device is attached.
All these callbacks need to be protected by ADAPTER_UP_MAGIC check.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Rcv producer value should be read in spin-lock.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Driver should not go ahead with fw recovery if fails to acquire
semaphore.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Defining macro to set and clear driver state.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now any pci-func can start fw, whoever sees the reset ack first.
Before this, pci-func which sets the RESET state has the responsibility
to start fw.
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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