27 Jul, 2011
1 commit
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This allows us to move duplicated code in
(atomic_inc_not_zero() for now) toSigned-off-by: Arun Sharma
Reviewed-by: Eric Dumazet
Cc: Ingo Molnar
Cc: David Miller
Cc: Eric Dumazet
Acked-by: Mike Frysinger
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Jun, 2011
1 commit
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* remove interrupt.g inclusion from netdevice.h -- not needed
* fixup fallout, add interrupt.h and hardirq.h back where needed.Signed-off-by: Alexey Dobriyan
Signed-off-by: David S. Miller
30 Apr, 2011
1 commit
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This updates the network drivers so that they don't access the
ethtool_cmd::speed field directly, but use ethtool_cmd_speed()
instead.For most of the drivers, these changes are purely cosmetic and don't
fix any problem, such as for those 1GbE/10GbE drivers that indirectly
call their own ethtool get_settings()/mii_ethtool_gset(). The changes
are meant to enforce code consistency and provide robustness with
future larger throughputs, at the expense of a few CPU cycles for each
ethtool operation.All drivers compiled with make allyesconfig ion x86_64 have been
updated.Tested: make allyesconfig on x86_64 + e1000e/bnx2x work
Signed-off-by: David Decotigny
Signed-off-by: David S. Miller
29 Apr, 2011
1 commit
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Commit b9367bf3ee6d ("net: ibmveth: convert to hw_features") accidentally
removed call to ibmveth_set_csum_offload() in ibmveth_probe(). Put the
call back where it was, but with additional error checking provided
by ibmveth_set_features().Signed-off-by: Michał Mirosław
Reported-by: Stephen Rothwell
[sfr: dev -> netdev]
Signed-off-by: Stephen Rothwell
Signed-off-by: David S. Miller
20 Apr, 2011
1 commit
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A minimal conversion.
ibmveth_set_csum_offload() can be folded into ibmveth_set_features()
and adapter->rx_csum removed - left for later cleanup.Signed-off-by: Michał Mirosław
Signed-off-by: David S. Miller
11 Dec, 2010
1 commit
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Various drivers are using implementations of ethtool_ops::get_link
that are equivalent to the default ethtool_op_get_link(). Change
them to use that instead.Signed-off-by: Ben Hutchings
Signed-off-by: David S. Miller
21 Oct, 2010
2 commits
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Free irq on error path.
Signed-off-by: Denis Kirjanov
Signed-off-by: David S. Miller -
Remove duplicated code in one place.
Signed-off-by: Denis Kirjanov
Signed-off-by: David S. Miller
07 Sep, 2010
21 commits
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Add an entry to the MAINTAINERS file for ibmveth, clean up the copyright
and add all authors. Change the name of the module to reflect the product name
over the last number of years.Considering all the changes we have made, bump the driver version.
Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
These files probably came across from the skeleton driver. Remove them.
Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
We had a driver specific assert function which wasn't enabled most of the
time. Convert them to BUG_ON and enable them all the time.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
We had a few cases where we returned success on error.
Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
Fix most of the kernel coding style issues in ibmveth.
Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
IbmVethNumBufferPools -> IBMVETH_NUM_BUFF_POOLS
Also change IBMVETH_MAX_MTU -> IBMVETH_MIN_MTU, it refers to the minimum
size not the maximum.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
Use netdev_err to standardise the error output.
Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
Use netdev_dbg to standardise the debug output.
Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
These functions appear before their use, so we can remove the redundant
prototypes.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
We were using alloc_skb which doesn't create any headroom. Change it to
use netdev_alloc_skb to match most other drivers.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
We export all the driver specific statistics via ethtool, so there is no need
to duplicate this in procfs.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
This patch enables TCP checksum offload support for IPv6 on ibmveth.
This completely eliminates the generation and checking of the checksum
for IPv6 packets that are completely virtual and never touch a physical
network. A basic TCPIPV6_STREAM netperf run showed a ~30% throughput
improvement when an MTU of 64000 was used.This featured is enabled by default, as is the case for IPv4 checksum
offload. When checksum offload is enabled the driver will negotiate
IPv4 and IPv6 offload with the firmware separately and enable what
is available. As long as either IPv4 or IPv6 offload is supported
and enabled the device will report that checksum offload is enabled.
The device stats, available through ethtool, will display which
checksum offload features are supported/enabled by firmware.Performance testing against a stock kernel shows no regression for IPv4
or IPv6 in terms of throughput or processor utilization with checksum
disabled or enabled.Signed-off-by: Robert Jennings
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
Remove code in the device probe function where we set up the checksum
offload feature and replace it with a call to an existing function that
is doing the same. This is done to clean up the driver in preparation
of adding IPv6 checksum offload support.Signed-off-by: Robert Jennings
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
On some machines we can improve the bandwidth by ensuring rx buffers are
not in the cache. Add a module option that is disabled by default that flushes
rx buffers on insertion.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
ibmveth can scatter gather up to 6 segments. If we go over this then
we have no option but to call skb_linearize, like other drivers with
similar limitations do.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
We want to order the read in ibmveth_rxq_pending_buffer and the read of
ibmveth_rxq_buffer_valid which are both cacheable memory. smp_rmb() is good
enough for this.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
For small packets, create a new skb and copy the packet into it so we
avoid tearing down and creating a TCE entry.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
Use the existing bounce buffer if we send a buffer under a certain size.
This saves the overhead of a TCE map/unmap.I can't see any reason for the wmb() in the bounce buffer case, if we need
a barrier it will be before we call h_send_logical_lan but we have
nothing in the common case. Remove it.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
The ibmveth adapter needs locking in the transmit routine to protect
the bounce_buffer but it sets LLTX and forgets to add any of its own
locking.Just remove the deprecated LLTX option. Remove the stats lock in the process.
Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
At the moment we try and replenish the receive ring on every rx interrupt.
We even have a pool->threshold but aren't using it.To limit the maximum latency incurred when refilling, change the threshold
from 1/2 to 7/8 and reduce the largest rx pool from 768 buffers to 512 which
should be more than enough.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller -
Replace some modulus operators with an increment and compare to avoid
an integer divide.Signed-off-by: Anton Blanchard
Signed-off-by: Santiago Leon
Signed-off-by: David S. Miller
19 Aug, 2010
1 commit
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This fixes the following opps which can occur when trying to deallocate
receive buffer pools when changing the MTU of an active ibmveth device.Oops: Kernel access of bad area, sig: 11 [#1]
NIP: d000000004db00e8 LR: d000000004db00ac CTR: 0000000000591038
REGS: c00000007fff39d0 TRAP: 0300 Not tainted (2.6.36-rc1)
MSR: 8000000000009032 CR: 22248244 XER: 00000002
DAR: 0000000000000488, DSISR: 0000000042000000
TASK = c00000007c463790[6531] 'netserver' THREAD: c00000007a154000 CPU: 0
GPR00: 0000000000000000 c00000007fff3c50 d000000004dbd360 0000000000000001
GPR04: 0000000000000001 1fffffffffffffff 000000000000043c c00000007a8e9f60
GPR08: c00000007a8e9e20 0000000000000245 0000000000000488 0000000000000000
GPR12: 00000000000000c0 c000000006d70000 c00000007bfec098 c00000007bfebc2c
GPR16: c00000007a157c78 0000000000000000 0000000000000001 0000000000000000
GPR20: 0000000000000001 0000000000000010 c000000000b51180 c00000007a8e9d90
GPR24: c00000007a8e9da0 c00000007a8e9580 00000000000005ea 00000000000002ff
GPR28: 0000000000000004 0000000000000080 c000000000a946f8 c00000007a8e9d80
NIP [d000000004db00e8] .ibmveth_remove_buffer_from_pool+0xe8/0x130 [ibmveth]
LR [d000000004db00ac] .ibmveth_remove_buffer_from_pool+0xac/0x130 [ibmveth]
Call Trace:
[c00000007fff3c50] [d000000004db00ac] .ibmveth_remove_buffer_from_pool+0xac/0x130 [ibmveth] (unreliable)
[c00000007fff3cf0] [d000000004db31dc] .ibmveth_poll+0x30c/0x460 [ibmveth]
[c00000007fff3dd0] [c00000000042c4b8] .net_rx_action+0x178/0x278
[c00000007fff3eb0] [c000000000093cf0] .__do_softirq+0x118/0x1f8
[c00000007fff3f90] [c00000000002ab3c] .call_do_softirq+0x14/0x24
[c00000007a157600] [c00000000000e3e4] .do_softirq+0xec/0x110
[c00000007a1576a0] [c000000000093394] .local_bh_enable_ip+0xb4/0xe0
[c00000007a157720] [c0000000004f0bac] ._raw_spin_unlock_bh+0x3c/0x50
[c00000007a157790] [c0000000004186e0] .release_sock+0x158/0x188
[c00000007a157840] [c000000000479660] .tcp_recvmsg+0x560/0x9b8
[c00000007a157970] [c0000000004a0d78] .inet_recvmsg+0x80/0xd8
[c00000007a157a00] [c000000000413e28] .sock_recvmsg+0x128/0x178
[c00000007a157bf0] [c0000000004164ac] .SyS_recvfrom+0xb4/0x148
[c00000007a157d70] [c000000000411f3c] .SyS_socketcall+0x274/0x360
[c00000007a157e30] [c0000000000085b4] syscall_exit+0x0/0x40Reported-by: Rafael Camarda Silva Folco
Signed-off-by: Robert Jennings
Acked-by: Brian King
Signed-off-by: David S. Miller
17 Jul, 2010
1 commit
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The order of freeing the IRQ and freeing the device in firmware
in ibmveth_close can cause the adapter to become unusable after a
subsequent ibmveth_open. Only a reboot of the OS will make the
network device usable again. This is seen when cycling the adapter
up and down while there is network activity.There is a window where an IRQ will be left unserviced (H_EOI will not
be called). The solution is to make a VIO_IRQ_DISABLE h_call, free the
device with firmware, and then call free_irq.Signed-off-by: Robert Jennings
Signed-off-by: David S. Miller
18 May, 2010
2 commits
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Use kcalloc or kzalloc rather than the combination of kmalloc and memset.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)//
@@
expression x,y,flags;
statement S;
type T;
@@x =
- kmalloc
+ kcalloc
(
- y * sizeof(T),
+ y, sizeof(T),
flags);
if (x == NULL) S
-memset(x, 0, y * sizeof(T));@@
expression x,size,flags;
statement S;
@@-x = kmalloc(size,flags);
+x = kzalloc(size,flags);
if (x == NULL) S
-memset(x, 0, size);
//Signed-off-by: Julia Lawall
Signed-off-by: David S. Miller -
Adds support for resuming from suspend for IBM virtual ethernet devices.
We may have lost an interrupt over the suspend, so we just kick the
interrupt handler to process anything that is outstanding.Signed-off-by: Brian King
Signed-off-by: David S. Miller
14 May, 2010
1 commit
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This patch removes from drivers/net/ all the unnecessary
return; statements that precede the last closing brace of
void functions.It does not remove the returns that are immediately
preceded by a label as gcc doesn't like that.It also does not remove null void functions with return.
Done via:
$ grep -rP --include=*.[ch] -l "return;\n}" net/ | \
xargs perl -i -e 'local $/ ; while (<>) { s/\n[ \t\n]+return;\n}/\n}/g; print; }'with some cleanups by hand.
Compile tested x86 allmodconfig only.
Signed-off-by: Joe Perches
Signed-off-by: David S. Miller
10 May, 2010
1 commit
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Now that core network takes care of trans_start updates, dont do it
in drivers themselves, if possible. Drivers can avoid one cache miss
(on dev->trans_start) in their start_xmit() handler.Exceptions are NETIF_F_LLTX drivers
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
12 Apr, 2010
1 commit
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Conflicts:
drivers/net/stmmac/stmmac_main.c
drivers/net/wireless/wl12xx/wl1271_cmd.c
drivers/net/wireless/wl12xx/wl1271_main.c
drivers/net/wireless/wl12xx/wl1271_spi.c
net/core/ethtool.c
net/mac80211/scan.c
04 Apr, 2010
1 commit
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Converts the list and the core manipulating with it to be the same as uc_list.
+uses two functions for adding/removing mc address (normal and "global"
variant) instead of a function parameter.
+removes dev_mcast.c completely.
+exposes netdev_hw_addr_list_* macros along with __hw_addr_* functions for
manipulation with lists on a sandbox (used in bonding and 80211 drivers)Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller
30 Mar, 2010
1 commit
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…it slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
08 Mar, 2010
1 commit
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Constify struct sysfs_ops.
This is part of the ops structure constification
effort started by Arjan van de Ven et al.Benefits of this constification:
* prevents modification of data that is shared
(referenced) by many other structure instances
at runtime* detects/prevents accidental (but not intentional)
modification attempts on archs that enforce
read-only kernel data at runtime* potentially better optimized code as the compiler
can assume that the const data cannot be changed* the compiler/linker move const data into .rodata
and therefore exclude them from false sharingSigned-off-by: Emese Revfy
Acked-by: David Teigland
Acked-by: Matt Domsch
Acked-by: Maciej Sosnowski
Acked-by: Hans J. Koch
Acked-by: Pekka Enberg
Acked-by: Jens Axboe
Acked-by: Stephen Hemminger
Signed-off-by: Greg Kroah-Hartman
23 Feb, 2010
1 commit
-
Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller