Commit Graph

44 Commits

Author SHA1 Message Date
Al Viro 79ea13ce07 NULL noise in drivers/net
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:07:12 -08:00
Alejandro Martinez Ruiz 4c3616cdda netdev: use ARRAY_SIZE() instead of sizeof(array) / ETH_GSTRING_LEN
Using ARRAY_SIZE() on arrays of the form array[][K] makes it unnecessary
to know the value of K when checking its size.

Signed-off-by: Alejandro Martinez Ruiz <alex@flawedcode.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:03:36 -08:00
David S. Miller 14be85f555 [CASSINI]: Bump driver version and release date.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-04 03:55:30 -08:00
David S. Miller 86216268b9 [CASSINI]: Fix two obvious NAPI bugs.
1) close should do napi_disable() not napi_enable
2) remove unused local var 'todo'

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-04 03:55:27 -08:00
David S. Miller d011a23167 [CASSINI]: Set skb->truesize properly on receive packets.
skb->truesize was not being incremented at all to
reflect the page based data added to RX SKBs.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-04 03:55:24 -08:00
David S. Miller 9e1848b60d [CASSINI]: Program parent Intel31154 bridge when necessary.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-04 03:55:22 -08:00
David S. Miller 9de4dfb4c7 [CASSINI]: Revert 'dont touch page_count'.
This reverts changeset fa4f0774d7
([CASSINI]: dont touch page_count) because it breaks the driver.

The local page counting added by this changeset did not account
for the asynchronous page count changes done by kfree_skb()
and friends.

The change adds extra atomics and on top of it all appears to be
totally unnecessary as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Nick Piggin <npiggin@suse.de>
2008-01-04 03:55:19 -08:00
Al Viro e5e025401f [CASSINI]: Fix endianness bug.
Here's proposed fix for RX checksum handling in cassini; it affects
little-endian working with half-duplex gigabit, but obviously needs
testing on big-endian too.

The problem is, we need to convert checksum to fixed-endian *before*
correcting for (unstripped) FCS.  On big-endian it won't matter
(conversion is no-op), on little-endian it will, but only if FCS is
not stripped by hardware; i.e. in half-duplex gigabit mode when
->crc_size is set.

cassini.c part is that fix, cassini.h one consists of trivial
endianness annotations.  With that applied the sucker is endian-clean,
according to sparse.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-04 00:47:04 -08:00
Alejandro Martinez Ruiz e9edda697e netdev: convert non-obvious instances to use ARRAY_SIZE()
This will convert remaining non-obvious or naive calculations of array
sizes to use ARRAY_SIZE() macro.

Signed-off-by: Alejandro Martinez Ruiz <alex@flawedcode.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-15 15:57:38 -04:00
Jeff Garzik b9f2c0440d [netdrvr] Stop using legacy hooks ->self_test_count, ->get_stats_count
These have been superceded by the new ->get_sset_count() hook.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:45 -07:00
Joe Perches 0795af5729 [NET]: Introduce and use print_mac() and DECLARE_MAC_BUF()
This is nicer than the MAC_FMT stuff.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:42 -07:00
Ralf Baechle 10d024c1b2 [NET]: Nuke SET_MODULE_OWNER macro.
It's been a useless no-op for long enough in 2.6 so I figured it's time to
remove it.  The number of people that could object because they're
maintaining unified 2.4 and 2.6 drivers is probably rather small.

[ Handled drivers added by netdev tree and some missed IRDA cases... -DaveM ]

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:13 -07:00
Stephen Hemminger bea3348eef [NET]: Make NAPI polling independent of struct net_device objects.
Several devices have multiple independant RX queues per net
device, and some have a single interrupt doorbell for several
queues.

In either case, it's easier to support layouts like that if the
structure representing the poll is independant from the net
device itself.

The signature of the ->poll() call back goes from:

	int foo_poll(struct net_device *dev, int *budget)

to

	int foo_poll(struct napi_struct *napi, int budget)

The caller is returned the number of RX packets processed (or
the number of "NAPI credits" consumed if you want to get
abstract).  The callee no longer messes around bumping
dev->quota, *budget, etc. because that is all handled in the
caller upon return.

The napi_struct is to be embedded in the device driver private data
structures.

Furthermore, it is the driver's responsibility to disable all NAPI
instances in it's ->stop() device close handler.  Since the
napi_struct is privatized into the driver's private data structures,
only the driver knows how to get at all of the napi_struct instances
it may have per-device.

With lots of help and suggestions from Rusty Russell, Roland Dreier,
Michael Chan, Jeff Garzik, and Jamal Hadi Salim.

Bug fixes from Thomas Graf, Roland Dreier, Peter Zijlstra,
Joseph Fannin, Scott Wood, Hans J. Koch, and Michael Chan.

[ Ported to current tree and all drivers converted.  Integrated
  Stephen's follow-on kerneldoc additions, and restored poll_list
  handling to the old style to fix mutual exclusion issues.  -DaveM ]

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:47:45 -07:00
Randy Dunlap 694625c0b3 PCI: add pci_try_set_mwi
As suggested by Andrew, add pci_try_set_mwi(), which does not require
return-value checking.

- add pci_try_set_mwi() without __must_check
- make it return 0 on success, errno if the "try" failed or error
- review callers

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:11 -07:00
Auke Kok 44c10138fd PCI: Change all drivers to use pci_device->revision
Instead of all drivers reading pci config space to get the revision
ID, they can now use the pci_device->revision member.

This exposes some issues where drivers where reading a word or a dword
for the revision number, and adding useless error-handling around the
read. Some drivers even just read it for no purpose of all.

In devices where the revision ID is being copied over and used in what
appears to be the equivalent of hotpath, I have left the copy code
and the cached copy as not to influence the driver's performance.

Compile tested with make all{yes,mod}config on x86_64 and i386.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-11 16:02:10 -07:00
David S. Miller 4738d2fa59 [CASSINI]: Fix printk message typo.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-31 01:23:22 -07:00
David S. Miller 04efb8787e [CASSINI]: Check pci_set_mwi() return value.
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-24 17:54:15 -07:00
Arnaldo Carvalho de Melo d626f62b11 [SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}
To clearly state the intent of copying from linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2007-04-25 22:28:23 -07:00
Arnaldo Carvalho de Melo ea2ae17d64 [SK_BUFF]: Introduce skb_transport_offset()
For the quite common 'skb->h.raw - skb->data' sequence.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:16 -07:00
Arnaldo Carvalho de Melo 4c13eb6657 [ETH]: Make eth_type_trans set skb->dev like the other *_type_trans
One less thing for drivers writers to worry about.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:30 -07:00
David Howells 4c1ac1b491 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	drivers/infiniband/core/iwcm.c
	drivers/net/chelsio/cxgb2.c
	drivers/net/wireless/bcm43xx/bcm43xx_main.c
	drivers/net/wireless/prism54/islpci_eth.c
	drivers/usb/core/hub.h
	drivers/usb/input/hid-core.c
	net/core/netpoll.c

Fix up merge failures with Linus's head and fix new compilation failures.

Signed-Off-By: David Howells <dhowells@redhat.com>
2006-12-05 14:37:56 +00:00
Al Viro ff1dcadb1b [NET]: Split skb->csum
... into anonymous union of __wsum and __u32 (csum and csum_offset resp.)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:27:18 -08:00
David Howells c4028958b6 WorkStruct: make allyesconfig
Fix up for make allyesconfig.

Signed-Off-By: David Howells <dhowells@redhat.com>
2006-11-22 14:57:56 +00:00
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00
Linus Torvalds a319a2773a Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (217 commits)
  net/ieee80211: fix more crypto-related build breakage
  [PATCH] Spidernet: add ethtool -S (show statistics)
  [NET] GT96100: Delete bitrotting ethernet driver
  [PATCH] mv643xx_eth: restrict to 32-bit PPC_MULTIPLATFORM
  [PATCH] Cirrus Logic ep93xx ethernet driver
  r8169: the MMIO region of the 8167 stands behin BAR#1
  e1000, ixgb: Remove pointless wrappers
  [PATCH] Remove powerpc specific parts of 3c509 driver
  [PATCH] s2io: Switch to pci_get_device
  [PATCH] gt96100: move to pci_get_device API
  [PATCH] ehea: bugfix for register access functions
  [PATCH] e1000 disable device on PCI error
  drivers/net/phy/fixed: #if 0 some incomplete code
  drivers/net: const-ify ethtool_ops declarations
  [PATCH] ethtool: allow const ethtool_ops
  [PATCH] sky2: big endian
  [PATCH] sky2: fiber support
  [PATCH] sky2: tx pause bug fix
  drivers/net: Trim trailing whitespace
  [PATCH] ehea: IBM eHEA Ethernet Device Driver
  ...

Manually resolved conflicts in drivers/net/ixgb/ixgb_main.c and
drivers/net/sky2.c related to CHECKSUM_HW/CHECKSUM_PARTIAL changes by
commit 84fa7933a3 that just happened to be
next to unrelated changes in this update.
2006-09-24 10:15:13 -07:00
Patrick McHardy 84fa7933a3 [NET]: Replace CHECKSUM_HW by CHECKSUM_PARTIAL/CHECKSUM_COMPLETE
Replace CHECKSUM_HW by CHECKSUM_PARTIAL (for outgoing packets, whose
checksum still needs to be completed) and CHECKSUM_COMPLETE (for
incoming packets, device supplied full checksum).

Patch originally from Herbert Xu, updated by myself for 2.6.18-rc3.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-22 14:53:53 -07:00
Jeff Garzik 7282d491ec drivers/net: const-ify ethtool_ops declarations
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-13 14:30:00 -04:00
Jeff Garzik 6aa20a2235 drivers/net: Trim trailing whitespace
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-13 13:24:59 -04:00
Jeff Garzik 299176206b drivers/net: Remove deprecated use of pci_module_init()
From: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>

Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-19 17:48:59 -04:00
Jeff Garzik 9b91cf9daa [netdrvr] use dev_xxx() printk helpers, rather than dev_printk(KERN_xxx, ...
Suggested by Jiri Slaby.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-07-05 13:42:57 -04:00
Jeff Garzik 2e8a538d86 [netdrvr] Use dev_printk() when ethernet interface isn't available
For messages prior to register_netdev(), prefer dev_printk() because
that prints out both our driver name and our [PCI | whatever] bus id.

Updates: 8139{cp,too}, b44, bnx2, cassini, {eepro,epic}100, fealnx,
	 hamachi, ne2k-pci, ns83820, pci-skeleton, r8169.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-07-05 13:42:07 -04:00
Thomas Gleixner 1fb9df5d30 [PATCH] irq-flags: drivers/net: Use the new IRQF_ constants
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 13:58:51 -07:00
Jörn Engel 6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00
Herbert Xu 5b057c6b1a [NET]: Avoid allocating skb in skb_pad
First of all it is unnecessary to allocate a new skb in skb_pad since
the existing one is not shared.  More importantly, our hard_start_xmit
interface does not allow a new skb to be allocated since that breaks
requeueing.

This patch uses pskb_expand_head to expand the existing skb and linearize
it if needed.  Actually, someone should sift through every instance of
skb_pad on a non-linear skb as they do not fit the reasons why this was
originally created.

Incidentally, this fixes a minor bug when the skb is cloned (tcpdump,
TCP, etc.).  As it is skb_pad will simply write over a cloned skb.  Because
of the position of the write it is unlikely to cause problems but still
it's best if we don't do it.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 02:06:41 -07:00
Marc Zyngier 18e37f2a97 [PATCH] netdrvr: Convert cassini to pci_iomap
Folks,

This patch (against 2.6.17-rc1) converts the cassini driver to the
pci_iomap API that will do the right thing, so architectures like
PARISC can stop screaming about illegal usage of ioremap() on
non-cacheable regions.

Tested on 64bit PARISC kernel.

Signed-off-by: Marc Zyngier <maz@misterjones.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-20 17:42:05 -04:00
Rusty Russell 8d3b33f67f [PATCH] Remove MODULE_PARM
MODULE_PARM was actually breaking: recent gcc version optimize them out as
unused.  It's time to replace the last users, which are generally in the
most unloved drivers anyway.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 08:22:52 -08:00
Ingo Molnar 758df69ee0 [CASSINI]: sem2mutex
Semaphore to mutexes conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:34:09 -08:00
Nick Piggin fa4f0774d7 [CASSINI]: dont touch page_count
Remove page refcount manipulations from cassini driver by using
another field in struct page. Needed for lockless pagecache.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-18 14:05:16 -08:00
Andrew Morton 64af4c1362 [CASSINI]: Fix printk warning.
drivers/net/cassini.c:1930: warning: long unsigned int format, different type arg (arg 4)

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-17 15:14:49 -08:00
Olaf Hering 733482e445 [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reason
This patch removes almost all inclusions of linux/version.h.  The 3
#defines are unused in most of the touched files.

A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is
unfortunatly in linux/version.h.

There are also lots of #ifdef for long obsolete kernels, this was not
touched.  In a few places, the linux/version.h include was move to where
the LINUX_VERSION_CODE was used.

quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'`

search pattern:
/UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h

Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:55:57 -08:00
Al Viro 9e24974db6 [PATCH] gfp_t: drivers/net
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28 08:16:51 -07:00
Al Viro a232f76732 [CASSINI]: Convert to ethtool_ops
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-10-03 14:01:37 -07:00
Al Viro 46d7031ecb [PATCH] cassini annotations and fixes
- __user annotations
 - NULL noise removal
 - C99 initializers
 - s/u32/pm_message_t/ in ->suspend()
 - removal of bogus casts in iounmap() arguments
 - if_mii() instead of open-coded variant

Remains to be done: ethtool conversion.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-30 08:42:24 -07:00
David S. Miller 1f26dac320 [NET]: Add Sun Cassini driver.
Written by Adrian Sun (asun@darksunrising.com).
Ported to 2.6.x by Tom 'spot' Callaway <tcallawa@redhat.com>.
Further cleaned up and integrated by David S. Miller

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-27 15:24:13 -07:00