Commit graph

99 commits

Author SHA1 Message Date
Johannes Berg
59ae1d127a networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.

An spatch similar to the one for skb_put_zero() converts many
of the places using it:

    @@
    identifier p, p2;
    expression len, skb, data;
    type t, t2;
    @@
    (
    -p = skb_put(skb, len);
    +p = skb_put_data(skb, data, len);
    |
    -p = (t)skb_put(skb, len);
    +p = skb_put_data(skb, data, len);
    )
    (
    p2 = (t2)p;
    -memcpy(p2, data, len);
    |
    -memcpy(p, data, len);
    )

    @@
    type t, t2;
    identifier p, p2;
    expression skb, data;
    @@
    t *p;
    ...
    (
    -p = skb_put(skb, sizeof(t));
    +p = skb_put_data(skb, data, sizeof(t));
    |
    -p = (t *)skb_put(skb, sizeof(t));
    +p = skb_put_data(skb, data, sizeof(t));
    )
    (
    p2 = (t2)p;
    -memcpy(p2, data, sizeof(*p));
    |
    -memcpy(p, data, sizeof(*p));
    )

    @@
    expression skb, len, data;
    @@
    -memcpy(skb_put(skb, len), data, len);
    +skb_put_data(skb, data, len);

(again, manually post-processed to retain some comments)

Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 11:48:37 -04:00
yuval.shaia@oracle.com
697dae1ee1 net/3com: Make el3_netdev_get_ecmd return void
Make return value void since function never returns meaningfull value.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-05 11:00:43 -04:00
yuval.shaia@oracle.com
82c01a84d5 net/{mii, smsc}: Make mii_ethtool_get_link_ksettings and smc_netdev_get_ecmd return void
Make return value void since functions never returns meaningfull value.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-05 11:00:42 -04:00
Linus Torvalds
291b38a756 Annotation of module parameters that specify device settings
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Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull hw lockdown support from David Howells:
 "Annotation of module parameters that configure hardware resources
  including ioports, iomem addresses, irq lines and dma channels.

  This allows a future patch to prohibit the use of such module
  parameters to prevent that hardware from being abused to gain access
  to the running kernel image as part of locking the kernel down under
  UEFI secure boot conditions.

  Annotations are made by changing:

        module_param(n, t, p)
        module_param_named(n, v, t, p)
        module_param_array(n, t, m, p)

  to:

        module_param_hw(n, t, hwtype, p)
        module_param_hw_named(n, v, t, hwtype, p)
        module_param_hw_array(n, t, hwtype, m, p)

  where the module parameter refers to a hardware setting

  hwtype specifies the type of the resource being configured. This can
  be one of:

        ioport          Module parameter configures an I/O port
        iomem           Module parameter configures an I/O mem address
        ioport_or_iomem Module parameter could be either (runtime set)
        irq             Module parameter configures an I/O port
        dma             Module parameter configures a DMA channel
        dma_addr        Module parameter configures a DMA buffer address
        other           Module parameter configures some other value

  Note that the hwtype is compile checked, but not currently stored (the
  lockdown code probably won't require it). It is, however, there for
  future use.

  A bonus is that the hwtype can also be used for grepping.

  The intention is for the kernel to ignore or reject attempts to set
  annotated module parameters if lockdown is enabled. This applies to
  options passed on the boot command line, passed to insmod/modprobe or
  direct twiddling in /sys/module/ parameter files.

  The module initialisation then needs to handle the parameter not being
  set, by (1) giving an error, (2) probing for a value or (3) using a
  reasonable default.

  What I can't do is just reject a module out of hand because it may
  take a hardware setting in the module parameters. Some important
  modules, some ipmi stuff for instance, both probe for hardware and
  allow hardware to be manually specified; if the driver is aborts with
  any error, you don't get any ipmi hardware.

  Further, trying to do this entirely in the module initialisation code
  doesn't protect against sysfs twiddling.

  [!] Note that in and of itself, this series of patches should have no
      effect on the the size of the kernel or code execution - that is
      left to a patch in the next series to effect. It does mark
      annotated kernel parameters with a KERNEL_PARAM_FL_HWPARAM flag in
      an already existing field"

* tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: (38 commits)
  Annotate hardware config module parameters in sound/pci/
  Annotate hardware config module parameters in sound/oss/
  Annotate hardware config module parameters in sound/isa/
  Annotate hardware config module parameters in sound/drivers/
  Annotate hardware config module parameters in fs/pstore/
  Annotate hardware config module parameters in drivers/watchdog/
  Annotate hardware config module parameters in drivers/video/
  Annotate hardware config module parameters in drivers/tty/
  Annotate hardware config module parameters in drivers/staging/vme/
  Annotate hardware config module parameters in drivers/staging/speakup/
  Annotate hardware config module parameters in drivers/staging/media/
  Annotate hardware config module parameters in drivers/scsi/
  Annotate hardware config module parameters in drivers/pcmcia/
  Annotate hardware config module parameters in drivers/pci/hotplug/
  Annotate hardware config module parameters in drivers/parport/
  Annotate hardware config module parameters in drivers/net/wireless/
  Annotate hardware config module parameters in drivers/net/wan/
  Annotate hardware config module parameters in drivers/net/irda/
  Annotate hardware config module parameters in drivers/net/hamradio/
  Annotate hardware config module parameters in drivers/net/ethernet/
  ...
2017-05-10 19:13:03 -07:00
David Howells
df29840815 Annotate hardware config module parameters in drivers/net/ethernet/
When the kernel is running in secure boot mode, we lock down the kernel to
prevent userspace from modifying the running kernel image.  Whilst this
includes prohibiting access to things like /dev/mem, it must also prevent
access by means of configuring driver modules in such a way as to cause a
device to access or modify the kernel image.

To this end, annotate module_param* statements that refer to hardware
configuration and indicate for future reference what type of parameter they
specify.  The parameter parser in the core sees this information and can
skip such parameters with an error message if the kernel is locked down.
The module initialisation then runs as normal, but just sees whatever the
default values for those parameters is.

Note that we do still need to do the module initialisation because some
drivers have viable defaults set in case parameters aren't specified and
some drivers support automatic configuration (e.g. PNP or PCI) in addition
to manually coded parameters.

This patch annotates drivers in drivers/net/ethernet/.

Suggested-by: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steffen Klassert <steffen.klassert@secunet.com>
cc: Jaroslav Kysela <perex@perex.cz>
cc: netdev@vger.kernel.org
cc: linux-parisc@vger.kernel.org
2017-04-20 12:02:32 +01:00
Tobias Klauser
730826bfc3 net: typhoon: Use net_device_stats from struct net_device
Instead of using a private copy of struct net_device_stats in struct
typhoon, use stats from struct net_device.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-07 07:03:33 -07:00
Eric Dumazet
6ad20165d3 drivers: net: generalize napi_complete_done()
napi_complete_done() allows to opt-in for gro_flush_timeout,
added back in linux-3.19, commit 3b47d30396
("net: gro: add a per device gro flush timer")

This allows for more efficient GRO aggregation without
sacrifying latencies.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30 15:10:42 -05:00
Thomas Preisner
6b6bbb5922 net: 3com: typhoon: typhoon_init_one: make return values more specific
In some cases the return value of a failing function is not being used
and the function typhoon_init_one() returns another negative error code
instead.

Signed-off-by: Thomas Preisner <thomas.preisner+linux@fau.de>
Signed-off-by: Milan Stephan <milan.stephan+linux@fau.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-30 15:26:22 -05:00
Thomas Preisner
107fded7bf net: 3com: typhoon: typhoon_init_one: fix incorrect return values
In a few cases the err-variable is not set to a negative error code if a
function call in typhoon_init_one() fails and thus 0 is returned
instead.
It may be better to set err to the appropriate negative error
code before returning.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188841

Reported-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Thomas Preisner <thomas.preisner+linux@fau.de>
Signed-off-by: Milan Stephan <milan.stephan+linux@fau.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-30 15:26:22 -05:00
Linus Torvalds
7c0f6ba682 Replace <asm/uaccess.h> with <linux/uaccess.h> globally
This was entirely automated, using the script by Al:

  PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>'
  sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \
        $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)

to do the replacement at the end of the merge window.

Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-24 11:46:01 -08:00
Thomas Gleixner
e28ceeb10c net/3com/3c515: Fix timer handling, prevent leaks and crashes
The timer handling in this driver is broken in several ways:

- corkscrew_open() initializes and arms a timer before requesting the
  device interrupt. If the request fails the timer stays armed.

  A second call to corkscrew_open will unconditionally reinitialize the
  quued timer and arm it again. Also a immediate device removal will leave
  the timer queued because close() is not called (open() failed) and
  therefore nothing issues del_timer().

  The reinitialization corrupts the link chain in the timer wheel hash
  bucket and causes a NULL pointer dereference when the timer wheel tries
  to operate on that hash bucket. Immediate device removal lets the link
  chain poke into freed and possibly reused memory.

  Solution: Arm the timer after the successful irq request.

- corkscrew_close() uses del_timer()

  On close the timer is disarmed with del_timer() which lets the following
  code race against a concurrent timer expiry function.

  Solution: Use del_timer_sync() instead

- corkscrew_close() calls del_timer() unconditionally

  del_timer() is invoked even if the timer was never initialized. This
  works by chance because the struct containing the timer is zeroed at
  allocation time.

  Solution: Move the setup of the timer into corkscrew_setup().

Reported-by: Matthew Whitehead <tedheadster@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-16 13:25:06 -05:00
Philippe Reynes
b12ab9b119 net: 3com: typhoon: fix typhoon_get_link_ksettings
When moving from typhoon_get_settings to typhoon_getlink_ksettings
in the commit f7a5537cd2 ("net: 3com: typhoon: use new api
ethtool_{get|set}_link_ksettings"), we use a local variable supported
but we forgot to update the struct ethtool_link_ksettings with
this value.

We also initialize advertising to zero, because otherwise it may
be uninitialized if no case of the switch (tp->xcvr_select) is used.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-09 13:25:14 -05:00
Philippe Reynes
f7a5537cd2 net: 3com: typhoon: use new api ethtool_{get|set}_link_ksettings
The ethtool api {get|set}_settings is deprecated.
We move this driver to new api {get|set}_link_ksettings.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Reviewed-by: David Dillow <dave@thedillows.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-02 15:26:51 -04:00
Philippe Reynes
b646cf299e net: 3c509: use new api ethtool_{get|set}_link_ksettings
The ethtool api {get|set}_settings is deprecated.
We move this driver to new api {get|set}_link_ksettings.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-02 15:17:09 -04:00
Philippe Reynes
e19b7883ef net: 3c59x: use new api ethtool_{get|set}_link_ksettings
The ethtool api {get|set}_settings is deprecated.
We move this driver to new api {get|set}_link_ksettings.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-02 15:17:09 -04:00
Jarod Wilson
a52ad514fd net: deprecate eth_change_mtu, remove usage
With centralized MTU checking, there's nothing productive done by
eth_change_mtu that isn't already done in dev_set_mtu, so mark it as
deprecated and remove all usage of it in the kernel. All callers have been
audited for calls to alloc_etherdev* or ether_setup directly, which means
they all have a valid dev->min_mtu and dev->max_mtu. Now eth_change_mtu
prints out a netdev_warn about being deprecated, for the benefit of
out-of-tree drivers that might be utilizing it.

Of note, dvb_net.c actually had dev->mtu = 4096, while using
eth_change_mtu, meaning that if you ever tried changing it's mtu, you
couldn't set it above 1500 anymore. It's now getting dev->max_mtu also set
to 4096 to remedy that.

v2: fix up lantiq_etop, missed breakage due to drive not compiling on x86

CC: netdev@vger.kernel.org
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-13 09:36:57 -04:00
Javier Martinez Canillas
aa211d2074 3c59x: use IS_ENABLED() instead of checking for built-in or module
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either
built-in or as a module, use that macro instead of open coding the same.

Using the macro makes the code more readable by helping abstract away some
of the Kconfig built-in and module enable details.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-12 20:27:57 -07:00
Florian Westphal
860e9538a9 treewide: replace dev->trans_start update with helper
Replace all trans_start updates with netif_trans_update helper.
change was done via spatch:

struct net_device *d;
@@
- d->trans_start = jiffies
+ netif_trans_update(d)

Compile tested only.

Cc: user-mode-linux-devel@lists.sourceforge.net
Cc: linux-xtensa@linux-xtensa.org
Cc: linux1394-devel@lists.sourceforge.net
Cc: linux-rdma@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: MPT-FusionLinux.pdl@broadcom.com
Cc: linux-scsi@vger.kernel.org
Cc: linux-can@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-hams@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-wireless@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: devel@driverdev.osuosl.org
Cc: b.a.t.m.a.n@lists.open-mesh.org
Cc: linux-bluetooth@vger.kernel.org
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-04 14:16:49 -04:00
David S. Miller
810813c47a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Several cases of overlapping changes, as well as one instance
(vxlan) of a bug fix in 'net' overlapping with code movement
in 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-08 12:34:12 -05:00
Neil Horman
a6522c0898 3c59x: mask LAST_FRAG bit from length field in ring
Recently, I fixed a bug in 3c59x:

commit 6e144419e4
Author: Neil Horman <nhorman@tuxdriver.com>
Date:   Wed Jan 13 12:43:54 2016 -0500

    3c59x: fix another page map/single unmap imbalance

Which correctly rebalanced dma mapping and unmapping types.  Unfortunately it
introduced a new bug which causes oopses on older systems.

When mapping dma regions, the last entry for a packet in the 3c59x tx ring
encodes a LAST_FRAG bit, which is encoded as the high order bit of the buffers
length field.  When it is unmapped the LAST_FRAG bit is cleared prior to being
passed to the unmap function.  Unfortunately the commit above fails to do that
masking.  It was missed in testing because the system on which I tested it had
an intel iommu, the driver for which ignores the size field, using only the DMA
address as the token to identify the mapping to be released.  However, on older
systems that rely on swiotlb (or other dma drivers that key off that length
field), not masking off that LAST_FRAG high order bit results in parsing a huge
size to be release, leading to all sorts of odd corruptions and the like.

Fix is easy, just mask the length with 0xFFF.  It should really be
&(LAST_FRAG-1), but 0xFFF is the style of the file, and I'd like to make this
fix minimal and correct before making it prettier.

Appies to the net tree cleanly.  All testing on both iommu and swiommu based
systems produce good results

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-29 17:03:35 -05:00
Stafford Horne
f12d33f4d8 3c59x: Ensure to apply the expires time
In commit 5b6490def9 ("3c59x: Use setup_timer()") Amitoj
removed add_timer which sets up the epires timer.  In this patch
the behavior is restore but it uses mod_timer which is a bit more
compact.

Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-28 23:39:26 -05:00
Amitoj Kaur Chawla
5b6490def9 3c59x: Use setup_timer()
Convert a call to init_timer and accompanying intializations of
the timer's data and function fields to a call to setup_timer.

The Coccinelle semantic patch that fixes this problem is
as follows:

// <smpl>
@@
expression t,f,d;
@@

-init_timer(&t);
+setup_timer(&t,f,d);
 ...
-t.data = d;
-t.function = f;
// </smpl>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-25 16:51:05 -05:00
Neil Horman
6e144419e4 3c59x: fix another page map/single unmap imbalance
libdma debug found another page map/unmap imbalance in 3c59x.  Multi fragment
frames are mapped such that the lead fragment was mapped as a single entry,
while all other fragments were mapped as pages.  However, on unmapping they were
all unmapped as pages.  Fix is pretty easy, just unmap the lead frag as a single
entry, and bump the for loop initalization up by one so that all subsequent
frags get unmapped as pages

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-13 14:55:18 -05:00
Neil Horman
7356f4e424 3c59x: balance page maps and unmaps
debug kernel noticed a screw up in 3c59x.  skbs being mapped as page were being
unmapped as singles.  Easy fix.  Tested by myself

Signed-off-by: Neil Horman <nhorman@tuxdriver.com
CC: "David S. Miller" <davem@davemloft.net>
CC: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-13 14:55:18 -05:00
Fabian Frederick
cb4396edd8 drivers/net: fix eisa_driver probe section mismatch
Some eisa_driver structures used __init probe functions which generates
a warning and could crash if function is called after being deleted.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-14 00:24:22 -05:00
Loganaden Velvindron
4a89ba04ec 3c59x: Add BQL support for 3c59x ethernet driver.
This BQL patch is based on work done by Tino Reichardt.

Tested on 0000:05:00.0: 3Com PCI 3c905C Tornado at ffffc90000e6e000 by running
Flent several times.

Signed-off-by: Loganaden Velvindron <logan@elandsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-24 12:20:58 -07:00
Jia-Ju Bai
2fc09962e2 3c59x: Fix resource leaks in vortex_open
When vortex_up is failed, the skb buffers allocated by __netdev_alloc_skb
in vortex_open are not released, which may cause resource leaks.
This bug has been submitted before.
This patch modifies the error handling code to fix it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-03 15:21:33 -07:00
Denys Vlasenko
4eed4d8ff9 3c59x: Fix shared IRQ handling
As its first order of business, boomerang_interrupt() checks whether
the device really has any pending interrupts. If it does not,
it does nothing and returns, but it still returns IRQ_HANDLED.

This is wrong: interrupt was not handled, IRQ handlers of other
devices sharing this IRQ line need to be called.

vortex_interrupt() has it right: it returns IRQ_NONE in this case
via IRQ_RETVAL(0).

Do the same in boomerang_interrupt().

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: David S. Miller <davem@davemloft.net>
CC: linux-kernel@vger.kernel.org
CC: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-08 23:37:32 -07:00
Paul Gortmaker
138b15ed87 drivers/net: remove all references to obsolete Ethernet-HOWTO
This howto made sense in the 1990s when users had to manually configure
ISA cards with jumpers or vendor utilities, but with the implementation
of PCI it became increasingly less and less relevant, to the point where
it has been well over a decade since I last updated it.  And there is
no value in anyone else taking over updating it either.

However the references to it continue to spread as boiler plate text
from one Kconfig file into the next.  We are not doing end users any
favours by pointing them at this old document, so lets kill it with
fire, once and for all, to hopefully stop any further spread.

No code is changed in this commit, just Kconfig help text.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:50:35 -07:00
Vaishali Thakkar
1d6c4cca41 drivers/net: Use setup_timer and mod_timer
This patch introduces the use of functions setup_timer
and mod_timer.

This is done using Coccinelle and semantic patch used
for this 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>
2015-02-11 19:40:12 -08:00
Jiri Pirko
df8a39defa net: rename vlan_tx_* helpers since "tx" is misleading there
The same macros are used for rx as well. So rename it.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-13 17:51:08 -05:00
Rasmus Villemoes
00fd5d94c2 net: typhoon: Remove redundant casts
Both image_data and typhoon_fw->data are const u8*, so the cast to u8*
is unnecessary and confusing.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: David Dillow <dave@thedillows.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-24 00:41:31 -04:00
David S. Miller
64b1f00a08 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-10-08 16:22:22 -04:00
Sylvain "ythier" Hitier
88b09a6d95 3c59x: fix bad split of cpu_to_le32(pci_map_single())
In commit 6f2b6a3005,
  # 3c59x: Add dma error checking and recovery
the intent is to split out the mapping from the byte-swapping in order to
insert a dma_mapping_error() check.

Kinda this semantic patch:

    // See http://coccinelle.lip6.fr/
    //
    // Beware, grouik-and-dirty!
    @@
    expression DEV, X, Y, Z;
    @@
    -   cpu_to_le32(pci_map_single(DEV, X, Y, Z))
    +   dma_addr_t addr = pci_map_single(DEV, X, Y, Z);
    +   if (dma_mapping_error(&DEV->dev, addr))
    +       /* snip */;
    +   cpu_to_le32(addr)

However, the #else part (of the #if DO_ZEROCOPY test) is changed this way:

    -   cpu_to_le32(pci_map_single(DEV, X, Y, Z))
    +   dma_addr_t addr = cpu_to_le32(pci_map_single(DEV, X, Y, Z));
    //                    ^^^^^^^^^^^
    //                    That mismatches the 3 other changes!
    +   if (dma_mapping_error(&DEV->dev, addr))
    +       /* snip */;
    +   cpu_to_le32(addr)

Let's remove the leftover cpu_to_le32() for coherency.

v2: Better changelog.
v3: Add Acked-by

Fixes: 6f2b6a3005
  # 3c59x: Add dma error checking and recovery
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Sylvain "ythier" Hitier <sylvain.hitier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-07 13:16:06 -04:00
David S. Miller
1f6d80358d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	arch/mips/net/bpf_jit.c
	drivers/net/can/flexcan.c

Both the flexcan and MIPS bpf_jit conflicts were cases of simple
overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-23 12:09:27 -04:00
Neil Horman
8400dd029e 3c59x: Fix bad offset spec in skb_frag_dma_map
Recently aded the use of skb_frag_dma_map to 3c59x, but didn't realize it
automatically included the frag_offset internally, as well as provided an option
to specify an extra offset in the parameter list.  We need to specify an offset
of 0 in the parameter list to avoid skb corruption that results in lost
connections.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Linux Kernel list <linux-kernel@vger.kernel.org>
CC: "David S. Miller" <davem@davemloft.net>
CC: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
2014-09-19 16:28:57 -04:00
Neil Horman
6f2b6a3005 3c59x: Add dma error checking and recovery
Noted that 3c59x has no checks on transmit for failed DMA mappings, and no
ability to unmap fragments when a single map fails in the middle of a transmit.
This patch provides error checking to ensure that dma mappings work properly,
and unrolls an skb mapping if a fragmented skb transmission has a mapping
failure to prevent leaks.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Linux Kernel list <linux-kernel@vger.kernel.org>
CC: "David S. Miller" <davem@davemloft.net>
CC: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
2014-09-19 16:28:57 -04:00
Joe Perches
fe3881cf7e drivers/net: Convert remaining uses of pr_warning to pr_warn
Use the much more common pr_warn instead of pr_warning.

Other miscellanea:

o Typo fixes submiting/submitting
o Coalesce formats
o Realign arguments
o Add missing terminating '\n' to formats

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-09 20:37:08 -07:00
Neil Horman
98ea232cf6 3c59x: avoid panic in boomerang_start_xmit when finding page address:
This bug was reported on a very old kernel (RHEL6, 2.6.32-491.el6):

BUG: unable to handle kernel paging request at 00800000
IP: [<c04107b5>] nommu_map_page+0x15/0x110
*pdpt = 000000003454f001 *pde = 000000003f03d067
Oops: 0000 [#1] SMP
last sysfs file: /sys/devices/system/cpu/online
Modules linked in: nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs p4_clockmod
ipv6 ppdev parport_pc parport microcode iTCO_wdt iTCO_vendor_support 3c59x mii
dcdbas serio_raw snd_intel8x0 snd_ac97_codec ac97_bus snd_seq snd_seq_device
snd_pcm snd_timer snd soundcore snd_page_alloc i2c_i801 sg lpc_ich mfd_core ext4
jbd2 mbcache sr_mod cdrom sd_mod crc_t10dif pata_acpi ata_generic ata_piix
radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core dm_mirror dm_region_hash
dm_log dm_mod [last unloaded: mperf]

Pid: 4219, comm: nfsd Not tainted 2.6.32-491.el6.i686 #1 Dell Computer
Corporation OptiPlex GX240               /OptiPlex GX240
EIP: 0060:[<c04107b5>] EFLAGS: 00010246 CPU: 0
EIP is at nommu_map_page+0x15/0x110
EAX: 00000000 EBX: c0a83480 ECX: 00000000 EDX: 00800000
ESI: 00000000 EDI: f70e7860 EBP: e2d09b54 ESP: e2d09b24
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process nfsd (pid: 4219, ti=e2d08000 task=e2ceaaa0 task.ti=e2d08000)
Stack:
 00000056 00000000 0000000e c65efd38 00000020 00000296 00000206 00000206
<0> c050c850 c0a83480 e2cef154 00000001 e2d09ba8 f8fcd585 00000510 00000001
<0> 00000000 00000000 f5172200 f8fdac00 0039ef8c f5277020 f70e7860 00000510
Call Trace:
 [<c050c850>] ? page_address+0xd0/0xe0
 [<f8fcd585>] ? boomerang_start_xmit+0x3b5/0x520 [3c59x]
 [<c07b2975>] ? dev_hard_start_xmit+0xe5/0x400
 [<f9182b00>] ? ip6_output_finish+0x0/0xf0 [ipv6]
 [<c07ca053>] ? sch_direct_xmit+0x113/0x180
 [<c07d5588>] ? nf_hook_slow+0x68/0x120
 [<c07b2ea5>] ? dev_queue_xmit+0x1b5/0x290
 [<f9182b6d>] ? ip6_output_finish+0x6d/0xf0 [ipv6]
 [<f9184cb8>] ? ip6_xmit+0x3e8/0x490 [ipv6]
 [<f91ab9f9>] ? inet6_csk_xmit+0x289/0x2f0 [ipv6]
 [<c07f6451>] ? tcp_transmit_skb+0x431/0x7f0
 [<c07a403f>] ? __alloc_skb+0x4f/0x140
 [<c07f85a2>] ? tcp_write_xmit+0x1c2/0xa50
 [<c07f90b1>] ? __tcp_push_pending_frames+0x31/0xe0
 [<c07ea47a>] ? tcp_sendpage+0x44a/0x4b0
 [<c07ea030>] ? tcp_sendpage+0x0/0x4b0
 [<c079be1e>] ? kernel_sendpage+0x4e/0x90
 [<f8457bb9>] ? svc_send_common+0xc9/0x120 [sunrpc]
 [<f8457c85>] ? svc_sendto+0x75/0x1f0 [sunrpc]
 [<c060d0d9>] ? _atomic_dec_and_lock+0x59/0x90
 [<f87d55d0>] ? nfs3svc_encode_readres+0x0/0xc0 [nfsd]
 [<f845876d>] ? svc_authorise+0x2d/0x40 [sunrpc]
 [<f87d4410>] ? nfs3svc_release_fhandle+0x0/0x10 [nfsd]
 [<f8455721>] ? svc_process_common+0xf1/0x5a0 [sunrpc]
 [<f8457e86>] ? svc_tcp_sendto+0x36/0xa0 [sunrpc]
 [<f8461778>] ? svc_send+0x98/0xd0 [sunrpc]
 [<f87c698c>] ? nfsd+0xac/0x140 [nfsd]
 [<c04470e0>] ? complete+0x40/0x60
 [<f87c68e0>] ? nfsd+0x0/0x140 [nfsd]
 [<c04802ac>] ? kthread+0x7c/0xa0
 [<c0480230>] ? kthread+0x0/0xa0
 [<c0409f9f>] ? kernel_thread_helper+0x7/0x10
Code: 8d b6 00 00 00 00 eb f8 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 55 89 e5
83 ec 30 89 75 f8 31 f6 89 7d fc 89 c7 89 c8 89 5d f4 <8b> 1a 8b 4d 08 c1 eb 19
c1 e3 04 8b 9b c0 29 c7 c0 83 e3 fc 29

But the problem seems to still exist upstream.  It seems on 32 bit kernels
page_address() can reutrn a NULL value in some circumstances, and the
pci_map_single api isn't prepared to handle that (on this system it results in a
bogus pointer deference in nommu_map_page.

The fix is pretty easy, if we convert the 3c59x driver to use the more
convieient skb_frag_dma_map api we don't need to find the virtual address of the
page at all, and page gets mapped to the hardware properly.  Verified to fix the
problem as described by the reporter.

Applies to the net tree

Change Notes:

v2) Converted PCI_DMA_TODEVICE to DMA_TO_DEVICE.  Thanks Dave!

v3) Actually Run git commit after making changes to v2 :)

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: klassert@mathematik.tu-chemnitz.de
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-05 17:24:02 -07:00
Benoit Taine
9baa3c34ac PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use
We should prefer `struct pci_device_id` over `DEFINE_PCI_DEVICE_TABLE` to
meet kernel coding style guidelines.  This issue was reported by checkpatch.

A simplified version of the semantic patch that makes this change is as
follows (http://coccinelle.lip6.fr/):

// <smpl>

@@
identifier i;
declarer name DEFINE_PCI_DEVICE_TABLE;
initializer z;
@@

- DEFINE_PCI_DEVICE_TABLE(i)
+ const struct pci_device_id i[]
= z;

// </smpl>

[bhelgaas: add semantic patch]
Signed-off-by: Benoit Taine <benoit.taine@lip6.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-08-12 12:15:14 -06:00
Wilfried Klaebe
7ad24ea4bf net: get rid of SET_ETHTOOL_OPS
net: get rid of SET_ETHTOOL_OPS

Dave Miller mentioned he'd like to see SET_ETHTOOL_OPS gone.
This does that.

Mostly done via coccinelle script:
@@
struct ethtool_ops *ops;
struct net_device *dev;
@@
-       SET_ETHTOOL_OPS(dev, ops);
+       dev->ethtool_ops = ops;

Compile tested only, but I'd seriously wonder if this broke anything.

Suggested-by: Dave Miller <davem@davemloft.net>
Signed-off-by: Wilfried Klaebe <w-lkml@lebenslange-mailadresse.de>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-13 17:43:20 -04:00
Uwe Kleine-König
ce816fa88c Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP
If the renamed symbol is defined lib/iomap.c implements ioport_map and
ioport_unmap and currently (nearly) all platforms define the port
accessor functions outb/inb and friend unconditionally.  So
HAS_IOPORT_MAP is the better name for this.

Consequently NO_IOPORT is renamed to NO_IOPORT_MAP.

The motivation for this change is to reintroduce a symbol HAS_IOPORT
that signals if outb/int et al are available.  I will address that at
least one merge window later though to keep surprises to a minimum and
catch new introductions of (HAS|NO)_IOPORT.

The changes in this commit were done using:

	$ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/'

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-07 16:36:11 -07:00
Eric W. Biederman
e5ddf351b1 3c59x: Call dev_consume_skb_any instead of dev_kfree_skb.
Replace dev_kfree_skb with dev_consume_skb_any in vortex_start_xmit
as it can be called in hard irq and other contexts.

dev_consume_skb_any is used when vortext_start_xmit directly consumes
the packet instead of dmaing it to the device.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2014-03-24 15:17:22 -07:00
Eric W. Biederman
8fa9524d6b 3c509: Call dev_consume_skb_any instead of dev_kfree_skb.
Replace dev_kfree_skb with dev_consume_skb_any in el3_start_xmit
as it can be called in hard irq and other contexts.

dev_consume_skb_any is used as on this simple hardware the
skb is consumed directly by the start_xmit function.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2014-03-24 15:14:59 -07:00
Justin van Wijngaarden
6df3efccee Drivers: net: ethernet: 3com: 3c589_cs fixed coding style issues
checkpatch.pl clean-up, from 14 error/ 277 warnings, to 0 errors, 7 warnings

Signed-off-by: Justin van Wijngaarden <justinvanwijngaarden@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-18 16:59:46 -05:00
Christian Engelmayer
4e6ecd442d 3c59x: Remove unused pointer in vortex_eisa_cleanup()
Remove unused network device private data pointer 'vp' in function
vortex_eisa_cleanup(). Detected by Coverity: CID 139826.

Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-09 19:06:14 -08:00
Paul Gortmaker
a81ab36bf5 drivers/net: delete non-required instances of include <linux/init.h>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.   Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

This covers everything under drivers/net except for wireless, which
has been submitted separately.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-16 11:53:26 -08:00
dingtianhong
ae237b3ede net: 3com: fix warning for incorrect type in argument
The commit c466a9b2b3
(net: 3com: slight optimization of addr compare)
cause a warning: "passing argument 1 of 'ether_addr_equal'
from incompatible pointer type", so fix it.

I think julia will convert ether_addr_equal to ether_addr_equal_64bits later.

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-13 23:30:35 -08:00
dingtianhong
c466a9b2b3 net: 3com: slight optimization of addr compare
Use possibly more efficient ether_addr_equal
to instead of memcmp.

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-31 16:48:30 -05:00
Matthew Whitehead
2a2529ef2b 3c59x: Add software timestamping
Added software timestamping ability. Tested with linuxptp and synchronized
clocks to an average of less than 200 microseconds on 10 megabit ethernet.

Tested on both Vortex and Boomerang models.

Signed-off-by: Matthew Whitehead <tedheadster@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-19 14:32:52 -05:00