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Zero pointer in rx_skb is how respective rxq_deinit() finds out out that a skb
slot is unallocated. If rxq_refill() fails (e.g. on OOM condition), subsequent
teardown would result in an attempt to kfree() invalid pointers.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the interface is shutdown, the mv643xx_eth driver hits the following
lockdep dump:
=================================
[ INFO: inconsistent lock state ]
3.8.0+ #303 Not tainted
---------------------------------
inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
NetworkManager/3449 [HC0[0]:SC0[0]:HE1:SE1] takes:
(_xmit_ETHER#2){+.?...}, at: [<c02828e4>] txq_reclaim+0x60/0x230
{IN-SOFTIRQ-W} state was registered at:
[<c007e93c>] mark_irqflags+0xf8/0x1c4
[<c007ee60>] __lock_acquire+0x458/0x9a4
[<c007f8b0>] lock_acquire+0x60/0x74
[<c03ea914>] _raw_spin_lock+0x40/0x50
[<c0334040>] sch_direct_xmit+0xa4/0x2e4
[<c0320880>] dev_queue_xmit+0x174/0x508
[<c03953b0>] ip6_finish_output2+0xd0/0x3c4
[<c03b15bc>] mld_sendpack+0x190/0x368
[<c03b3204>] mld_ifc_timer_expire+0xc/0x58
[<c005133c>] call_timer_fn+0x6c/0xe0
[<c0051588>] run_timer_softirq+0x1d8/0x210
[<c004c004>] __do_softirq+0xe0/0x1b4
[<c004c448>] irq_exit+0x64/0x6c
[<c000f1e0>] handle_IRQ+0x34/0x84
[<c000e0d0>] __irq_usr+0x30/0x80
irq event stamp: 160603
hardirqs last enabled at (160603): [<c00c736c>] kfree+0xa8/0xe8
hardirqs last disabled at (160602): [<c00c72e0>] kfree+0x1c/0xe8
softirqs last enabled at (160304): [<c028260c>] mib_counters_update+0x5ec/0x60c
softirqs last disabled at (160302): [<c03eab8c>] _raw_spin_lock_bh+0x14/0x54
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(_xmit_ETHER#2);
<Interrupt>
lock(_xmit_ETHER#2);
*** DEADLOCK ***
1 lock held by NetworkManager/3449:
#0: (rtnl_mutex){+.+.+.}, at: [<c032e664>] rtnetlink_rcv+0xc/0x24
stack backtrace:
[<c0013e34>] (unwind_backtrace+0x0/0xf8) from [<c007e12c>] (print_usage_bug+0x150/0x1d4)
[<c007e12c>] (print_usage_bug+0x150/0x1d4) from [<c007e3f8>] (mark_lock_irq+0x248/0x290)
[<c007e3f8>] (mark_lock_irq+0x248/0x290) from [<c007e598>] (mark_lock+0x158/0x404)
[<c007e598>] (mark_lock+0x158/0x404) from [<c007e97c>] (mark_irqflags+0x138/0x1c4)
[<c007e97c>] (mark_irqflags+0x138/0x1c4) from [<c007ee60>] (__lock_acquire+0x458/0x9a4)
[<c007ee60>] (__lock_acquire+0x458/0x9a4) from [<c007f8b0>] (lock_acquire+0x60/0x74)
[<c007f8b0>] (lock_acquire+0x60/0x74) from [<c03ea914>] (_raw_spin_lock+0x40/0x50)
[<c03ea914>] (_raw_spin_lock+0x40/0x50) from [<c02828e4>] (txq_reclaim+0x60/0x230)
[<c02828e4>] (txq_reclaim+0x60/0x230) from [<c0282ad8>] (txq_deinit+0x24/0xcc)
[<c0282ad8>] (txq_deinit+0x24/0xcc) from [<c0282d28>] (mv643xx_eth_stop+0x1a8/0x1bc)
[<c0282d28>] (mv643xx_eth_stop+0x1a8/0x1bc) from [<c031e314>] (__dev_close_many+0x88/0xcc)
[<c031e314>] (__dev_close_many+0x88/0xcc) from [<c031e380>] (__dev_close+0x28/0x3c)
[<c031e380>] (__dev_close+0x28/0x3c) from [<c0320fa0>] (__dev_change_flags+0x7c/0x134)
[<c0320fa0>] (__dev_change_flags+0x7c/0x134) from [<c03210e0>] (dev_change_flags+0x10/0x48)
[<c03210e0>] (dev_change_flags+0x10/0x48) from [<c032da1c>] (do_setlink+0x1a0/0x730)
[<c032da1c>] (do_setlink+0x1a0/0x730) from [<c032f524>] (rtnl_newlink+0x304/0x4b0)
[<c032f524>] (rtnl_newlink+0x304/0x4b0) from [<c032ef8c>] (rtnetlink_rcv_msg+0x25c/0x2a0)
[<c032ef8c>] (rtnetlink_rcv_msg+0x25c/0x2a0) from [<c03383a0>] (netlink_rcv_skb+0xbc/0xd8)
[<c03383a0>] (netlink_rcv_skb+0xbc/0xd8) from [<c032e674>] (rtnetlink_rcv+0x1c/0x24)
[<c032e674>] (rtnetlink_rcv+0x1c/0x24) from [<c03361d8>] (netlink_unicast_kernel+0x88/0xd4)
[<c03361d8>] (netlink_unicast_kernel+0x88/0xd4) from [<c0337dd0>] (netlink_unicast+0x138/0x180)
[<c0337dd0>] (netlink_unicast+0x138/0x180) from [<c0338020>] (netlink_sendmsg+0x208/0x32c)
[<c0338020>] (netlink_sendmsg+0x208/0x32c) from [<c030ab48>] (sock_sendmsg+0x84/0xa4)
[<c030ab48>] (sock_sendmsg+0x84/0xa4) from [<c030aef4>] (__sys_sendmsg+0x2ac/0x2c4)
[<c030aef4>] (__sys_sendmsg+0x2ac/0x2c4) from [<c030c8ec>] (sys_sendmsg+0x3c/0x68)
[<c030c8ec>] (sys_sendmsg+0x3c/0x68) from [<c000e2e0>] (ret_fast_syscall+0x0/0x3c)
It seems that txq_reclaim() takes the netif tx lock:
__netif_tx_lock(nq, smp_processor_id());
in a context outside of softirq context, and thus is susceptible to
deadlock should an interrupt occur.
Use __netif_tx_lock_bh()/__netif_tx_unlock_bh() instead.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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3.10-rc1 issues the following warning:
netif_napi_add() called with weight 128 on device eth%d
This patch reduce the weight to 64, using NAPI_POLL_WEIGHT.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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With recent support for GRO, there is no need to keep both LRO and
GRO. This patch therefore removes the deprecated inet_lro support
from mv643xx_eth. This is work is based on an experimental patch
provided by Eric Dumazet and Willy Tarreau.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Based-on-patch-by: Eric Dumazet <eric.dumazet@gmail.com>
Based-on-patch-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds GRO support to mv643xx_eth by making it invoke
napi_gro_receive instead of netif_receive_skb.
Signed-off-by: Soeren Moch <smoch@web.de>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch moves shared private data kzalloc to managed devm_kzalloc and
cleans now unneccessary kfree and error handling.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds an optional shared block clock to avoid lockups on
clock gated controllers. Besides the new clock, clock handling for
existing clocks is cleaned up and moved to devm_clk_get. Device
tree binding documentation is updated for the new clocks property.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When both the Marvell MV643XX ethernet driver and the Orion MDIO driver
are compiled as modules, the ethernet driver may be probed before the
MDIO driver. Let mv643xx_eth_probe() return EPROBE_DEFER in this case,
i.e. when it cannot find the PHY.
Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch converts the Marvell MV643XX ethernet driver to use the
Marvell Orion MDIO driver. As a result, PowerPC and ARM platforms
registering the Marvell MV643XX ethernet driver are also updated to
register a Marvell Orion MDIO driver. This driver voluntarily overlaps
with the Marvell Ethernet shared registers because it will use a subset
of this shared register (shared_base + 0x4 to shared_base + 0x84). The
Ethernet driver is also updated to look up for a PHY device using the
Orion MDIO bus driver.
For ARM and PowerPC we register a single instance of the "mvmdio" driver
in the system like it used to be done with the use of the "shared_smi"
platform_data cookie on ARM.
Note that it is safe to register the mvmdio driver only for the "ge00"
instance of the driver because this "ge00" interface is guaranteed to
always be explicitely registered by consumers of
arch/arm/plat-orion/common.c and other instances (ge01, ge10 and ge11)
were all pointing their shared_smi to ge00. For PowerPC the in-tree
Device Tree Source files mention only one MV643XX ethernet MAC instance
so the MDIO bus driver is registered only when id == 0.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This has been tested on a qnap TS-119P II. Note that enabling WOL with
"ethtool -s eth0 wol g" is not enough; you also need to tell the PIC
microcontroller inside the qnap that WOL should be enabled by sending
0xF2 with qcontrol(1) and you have to disable EUP ("Energy-using
Products", a European power-saving thing) by sending 0xF4.
Signed-off-by: Michael Stapelberg <michael@stapelberg.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When autoneg has been disabled in the PHY (Marvell 88E1118 here), auto
negotiation between MAC and PHY seem non-functional anymore. The only
way I found to workaround this is to manually configure the MAC with the
settings sent to the PHY earlier.
Signed-off-by: Phil Sutter <phil.sutter@viprinet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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alloc failures already get standardized OOM
messages and a dump_stack.
Convert kzalloc's with multiplies to kcalloc.
Convert kmalloc's with multiplies to kmalloc_array.
Fix a few whitespace defects.
Convert a constant 6 to ETH_ALEN.
Use parentheses around sizeof.
Convert vmalloc/memset to vzalloc.
Remove now unused size variables.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The flags argument of the phy_{attach,connect,connect_direct} functions
is then used to assign a struct phy_device dev_flags with its value.
All callers but the tg3 driver pass the flag 0, which results in the
underlying PHY drivers in drivers/net/phy/ not being able to actually
use any of the flags they would set in dev_flags. This patch gets rid of
the flags argument, and passes phydev->dev_flags to the internal PHY
library call phy_attach_direct() such that drivers which actually modify
a phy device dev_flags get the value preserved for use by the underlying
phy driver.
Acked-by: Kosta Zertsekel <konszert@marvell.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Over time, skb recycling infrastructure got litle interest and
many bugs. Generic rx path skb allocation is now using page
fragments for efficient GRO / TCP coalescing, and recyling
a tx skb for rx path is not worth the pain.
Last identified bug is that fat skbs can be recycled
and it can endup using high order pages after few iterations.
With help from Maxime Bizon, who pointed out that commit
87151b8689d (net: allow pskb_expand_head() to get maximum tailroom)
introduced this regression for recycled skbs.
Instead of fixing this bug, lets remove skb recycling.
Drivers wanting really hot skbs should use build_skb() anyway,
to allocate/populate sk_buff right before netif_receive_skb()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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From Andrew Lunn <andrew@lunn.ch>:
* 'v3.5-rc7-fixes' of git://github.com/lunn/linux:
ARM: Kirkwood: Replace mrvl with marvell
ARM: Orion: fix driver probe error handling with respect to clk
ARM: Dove: Fixup ge00 initialisation
ARM: Kirkwood: Fix PHY disable clk problems
ARM: Kirkwood: Ensure runit clock always ticks.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The clk patches added code to get and enable clocks in the
respective driver probe functions. If the probe function failed
for some reason after enabling the clock, the clock was not
disabled again in many cases.
Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
Signed-off-by: Andrew Lumm <andrew@lunn.ch>
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Commit 452503ebc (ARM: Orion: Eth: Add clk/clkdev support.) broke
the building of the driver on architectures which don't have clk
support. In particular PPC32 Pegasos which uses this driver.
Add #ifdef around the clk API usage.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adding casts of objects to the same type is unnecessary
and confusing for a human reader.
For example, this cast:
int y;
int *p = (int *)&y;
I used the coccinelle script below to find and remove these
unnecessary casts. I manually removed the conversions this
script produces of casts with __force, __iomem and __user.
@@
type T;
T *p;
@@
- (T *)p
+ p
A function in atl1e_main.c was passed a const pointer
when it actually modified elements of the structure.
Change the argument to a non-const pointer.
A function in stmmac needed a __force to avoid a sparse
warning. Added it.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull arm-soc clock driver changes from Olof Johansson:
"The new clock subsystem was merged in linux-3.4 without any users,
this now moves the first three platforms over to it: imx, mxs and
spear.
The series also contains the changes for the clock subsystem itself,
since Mike preferred to have it together with the platforms that
require these changes, in order to avoid interdependencies and
conflicts."
Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code
removed in one branch, added OF support in another) and
drivers/dma/imx-sdma.c (independent changes next to each other).
* tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
clk: Provide dummy clk_unregister()
SPEAr: Update defconfigs
SPEAr: Add SMI NOR partition info in dts files
SPEAr: Switch to common clock framework
SPEAr: Call clk_prepare() before calling clk_enable
SPEAr: clk: Add General Purpose Timer Synthesizer clock
SPEAr: clk: Add Fractional Synthesizer clock
SPEAr: clk: Add Auxiliary Synthesizer clock
SPEAr: clk: Add VCO-PLL Synthesizer clock
SPEAr: Add DT bindings for SPEAr's timer
ARM i.MX: remove now unused clock files
ARM: i.MX6: implement clocks using common clock framework
ARM i.MX35: implement clocks using common clock framework
ARM i.MX5: implement clocks using common clock framework
ARM: Kirkwood: Replace clock gating
ARM: Orion: Audio: Add clk/clkdev support
ARM: Orion: PCIE: Add support for clk
ARM: Orion: XOR: Add support for clk
ARM: Orion: CESA: Add support for clk
...
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The t_clk is moved from the shared part of the ethernet driver into
the per port section. Each port can have its own gated clock, which it
needs to enable/disable, as oppossed to there being one clock shared
by all ports. In practice, only kirkwood supports this at the moment.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove all #inclusions of asm/system.h preparatory to splitting and killing
it. Performed with the following command:
perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`
Signed-off-by: David Howells <dhowells@redhat.com>
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Unify return value of .ndo_set_mac_address if the given address
isn't valid. Return -EADDRNOTAVAIL as eth_mac_addr() already does
if is_valid_ether_addr() fails.
Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Replaced deprecating dev_alloc_skb with netdev_alloc_skb in drivers/net/ethernet
- Removed extra skb->dev = dev after netdev_alloc_skb
Signed-off-by: Pradeep A Dalvi <netdev@pradeepdalvi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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These statistics helped me a lot while searching who is losing
packets in my setup.
I added these stats to MIB group since they are very similar,
but just in other registers.
I have tested this patch on 88F6281 SoC.
Signed-off-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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New feature development
This adds support for new features, and contains stuff from most
platforms. A number of these patches could have fit into other
branches, too, but were small enough not to cause too much
confusion here.
* tag 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
mfd/db8500-prcmu: remove support for early silicon revisions
ARM: ux500: fix the smp_twd clock calculation
ARM: ux500: remove support for early silicon revisions
ARM: ux500: update register files
ARM: ux500: register DB5500 PMU dynamically
ARM: ux500: update ASIC detection for U5500
ARM: ux500: support DB8520
ARM: picoxcell: implement watchdog restart
ARM: OMAP3+: hwmod data: Add the default clockactivity for I2C
ARM: OMAP3: hwmod data: disable multiblock reads on MMC1/2 on OMAP34xx/35xx <= ES2.1
ARM: OMAP: USB: EHCI and OHCI hwmod structures for OMAP4
ARM: OMAP: USB: EHCI and OHCI hwmod structures for OMAP3
ARM: OMAP: hwmod data: Add support for AM35xx UART4/ttyO3
ARM: Orion: Remove address map info from all platform data structures
ARM: Orion: Get address map from plat-orion instead of via platform_data
ARM: Orion: mbus_dram_info consolidation
ARM: Orion: Consolidate the address map setup
ARM: Kirkwood: Add configuration for MPP12 as GPIO
ARM: Kirkwood: Recognize A1 revision of 6282 chip
ARM: ux500: update the MOP500 GPIO assignments
...
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Use an getter function in plat-orion/addr-map.c to get the address map
structure, rather than pass it to drivers in the platform_data
structures. When the drivers are built for none orion platforms, a
dummy function is provided instead which returns NULL.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Michael Walle <michael@walle.cc>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
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Fix below build error:
CC drivers/net/ethernet/marvell/mv643xx_eth.o
drivers/net/ethernet/marvell/mv643xx_eth.c: In function 'mv643xx_eth_get_drvinfo':
drivers/net/ethernet/marvell/mv643xx_eth.c:1505: error: 'info' undeclared (first use in this function)
drivers/net/ethernet/marvell/mv643xx_eth.c:1505: error: (Each undeclared identifier is reported only once
drivers/net/ethernet/marvell/mv643xx_eth.c:1505: error: for each function it appears in.)
make[4]: *** [drivers/net/ethernet/marvell/mv643xx_eth.o] Error 1
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Save some punctuation by using bool type's property equivalent to
doubled negation operator.
Reported-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
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v2: add couple missing conversions in drivers
split unexporting netdev_fix_features()
implemented %pNF
convert sock::sk_route_(no?)caps
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Per the mention made by Ben Hutchings that strlcpy is now the preferred
string copy routine for a .get_drvinfo routine, do a bit of floor
sweeping and convert some of the as-yet unconverted ethernet drivers to
it.
Signed-off-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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To ease skb->truesize sanitization, its better to be able to localize
all references to skb frags size.
Define accessors : skb_frag_size() to fetch frag size, and
skb_frag_size_{set|add|sub}() to manipulate it.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Per comments from Ben Hutchings on a previous patch, sweep the floors
a little removing unnecessary assignments of zero to fields of struct
ethtool_ringparam in driver code supporting ethtool -g.
Signed-off-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use IFF_UNICAST_FTL to find out if driver handles unicast address
filtering. In case it does not, promisc mode is entered.
Patch also fixes following drivers:
stmmac, niu: support uc filtering and yet it propagated
ndo_set_multicast_list
bna, benet, pxa168_eth, ks8851, ks8851_mll, ksz884x : has set
ndo_set_rx_mode but do not support uc filtering
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move the Marvell Ethernet drivers into drivers/net/ethernet/marvell/
and make the necessary Kconfig and Makefile changes.
CC: Sachin Sanap <ssanap@marvell.com>
CC: Zhangfei Gao <zgao6@marvell.com>
CC: Philip Rakity <prakity@marvell.com>
CC: Mark Brown <markb@marvell.com>
CC: Lennert Buytenhek <buytenh@marvell.com>
CC: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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