Stefan Schmidt [Thu, 21 May 2015 14:51:36 +0000 (16:51 +0200)]
ieee802154/atusb: Mark driver as AACK enabled in hardware.
Since firmware version 0.2 we use AACK handling directly in the firmware.
Inform the stack that the hardware supports and uses it.
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Stefan Schmidt [Thu, 21 May 2015 14:51:35 +0000 (16:51 +0200)]
ieee802154/atusb: Warn about outdated device firmware.
Together with mainlining the driver we released a first public binary version
of the device firmware. This is version 0.2. With this change we warn users
who run outdated versions of the firmware. While we have not seen problems
with it yet (thus no error, but a warning only) it would be better to run the
released and tested firmware. You can find released versions here:
http://downloads.qi-hardware.com/people/werner/wpan/web/
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Wed, 20 May 2015 07:27:03 +0000 (09:27 +0200)]
at86rf230: add missing cca ed level values
This patch add missing values for at86rf212 ed level values. Currently
there are 15 values and the register setting supports 16 different ed
level values.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reported-by: Craig Younkins <craig@freshtemp.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Tue, 19 May 2015 18:06:04 +0000 (21:06 +0300)]
Bluetooth: Add debug logs for legacy SMP crypto functions
To help debug legacy SMP crypto functions add debug logs of the
various values involved.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Arnd Bergmann [Tue, 19 May 2015 12:18:35 +0000 (14:18 +0200)]
mac802154: select CRYPTO when needed
The mac802154 subsystem uses functions from the crypto layer and correctly
selects the individual crypto algorithms, but fails to build when the
crypto layer is disabled altogether:
crypto/built-in.o: In function `crypto_ctr_free':
:(.text+0x80): undefined reference to `crypto_drop_spawn'
crypto/built-in.o: In function `crypto_rfc3686_free':
:(.text+0xac): undefined reference to `crypto_drop_spawn'
crypto/built-in.o: In function `crypto_ctr_crypt':
:(.text+0x2f0): undefined reference to `blkcipher_walk_virt_block'
:(.text+0x2f8): undefined reference to `crypto_inc'
To solve that, this patch also selects the core crypto code,
like all other users of that code do.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:10 +0000 (21:45 +0200)]
fakelb: cleanup code
This patch just cleanups the code at several places.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:09 +0000 (21:45 +0200)]
fakelb: add support for async xmit handling
This patch will add async xmit support for the fakelb driver.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:08 +0000 (21:45 +0200)]
fakelb: remove fakelb_hw_deliver
This patch cleanups the fakelb_hw_deliver function by removing them.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:07 +0000 (21:45 +0200)]
fakelb: add virtual phy reset defaults
This patch adds reset defaults for the fakelb phy. I used the channel 13
and page 0 which is the same default like at86rf233.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:06 +0000 (21:45 +0200)]
fakelb: use own channel and page attributes
This patch adds an own phy attribute for page and channel into
fakelb_phy. The current way is to use the internal mac802154 stored phy
pib values which can occur in locking issues while using it inside the
driver layer.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:05 +0000 (21:45 +0200)]
fakelb: introduce fakelb ifup phys list
This patch introduce a fakelb ifup phys list, which stores all
registered phys which are in an operated mode. This will reduce the
iterations of non-operated phys while transmit frames. There exists two
locks now, one rwlock for the operated interfaces and the spinlock for
protecting the list for all registered virtual phys.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:04 +0000 (21:45 +0200)]
fakelb: move lock out of iteration
The list need to be protected while iteration which is need when other
list iterates at the same time over this list.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:03 +0000 (21:45 +0200)]
fakelb: declare fakelb list static
This patch moves the fakelb list of all registered phy's in a static
declaration in the fakelb driver.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:02 +0000 (21:45 +0200)]
fakelb: declare rwlock static
This patch moves the rwlock declarition into a static variable.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:01 +0000 (21:45 +0200)]
fakelb: don't deliver when one phy
A real phy don't transmit the transmitted frame back to the phy. This
behaviour will confuse the 6LoWPAN and the upper IPv6 neighbour
discovery cache. We need now at least two virtual phy's to creating a
virtual wpan network.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:45:00 +0000 (21:45 +0200)]
fakelb: rename fakelb_dev_priv to fakelb_phy
This patch renames fakelb_dev_priv to fakelb_phy. We don't faking
devices here, we fake wpan phys. This avoids also confusing with the
variable priv, which is used several times in this driver to represent
this structure.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:59 +0000 (21:44 +0200)]
fakelb: use list_for_each_entry_safe
Iterate and removing items from a list, we should use
list_for_each_entry_safe instead list_for_each_entry to avoid accidents
by removing.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:58 +0000 (21:44 +0200)]
fakelb: creating two virtual phys per default
This patch change the default virtual wpan phys of fakelb driver from
one to two. To have one virtual phy makes no sense, because it need at
least two virtual phy's to speak to each other.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:57 +0000 (21:44 +0200)]
ieee802154: add support for atusb transceiver
This patch adds support for the atusb transceiver.
The current driver supports basic functionality only. Possible further
tasks would be to sync functionality with the at86rf230 driver, because
the atusb use internally an at86rf231 transceiver. Some of these
features need a firmware update like AACK and ARET handling.
I did small changes to this driver to work with xmit_async callback and
setting of a random extended perm address.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Werner Almesberger <werner@almesberger.net>
Cc: Stefan Schmidt <s.schmidt@samsung.com>
Cc: Richard Sharpe <realrichardsharpe@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:56 +0000 (21:44 +0200)]
mac802154: tx: allow xmit complete from hard irq
Replace consume_skb with dev_consume_skb_any in ieee802154_xmit_complete
which can be called in hard irq and other contexts.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:55 +0000 (21:44 +0200)]
at86rf230: fix callback for aret handling
This patch fix the complete callback for going into aret on. Currently
we starting after a state change into aret on again a state change into
aret on which is not necessary.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Martin Townsend [Sun, 17 May 2015 19:44:54 +0000 (21:44 +0200)]
mac802154: fakelb: Fix potential NULL pointer dereference.
fakelb_hw_deliver creates a copy of the skb's header which can
potentially return NULL so we now check for this before actually
delivering to the 802.15.4 MAC layer.
Signed-off-by: Martin Townsend <martin.townsend@xsilon.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:53 +0000 (21:44 +0200)]
nl802154: add support for dump phy capabilities
This patch add support to nl802154 to dump all phy capabilities which is
inside the wpan_phy_supported struct. Also we introduce a new method to
dumping supported channels. The new method will offer a easier interface
and has lesser netlink traffic.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:52 +0000 (21:44 +0200)]
at86rf230: add reset states of tx power level
This patch adds the reset states for tx power levels after running reset
procedure.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:51 +0000 (21:44 +0200)]
at86rf230: add cca ed level reset value
This patch adds reset values for cca ed level values after running reset
procedure.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:50 +0000 (21:44 +0200)]
at86rf230: rework tx cca energy detection level
This patch reworks the cca energy detection level handling. This
contains a calculation which works on all transceiver types and
add support for dump cca energy detection levels.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:49 +0000 (21:44 +0200)]
at86rf230: rework tx power support
This patch adds support for get transmit power levels and reworks the
set of transmit power levels which was broken before.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:48 +0000 (21:44 +0200)]
at86rf230: set cca_modes supported flags
This patch sets the at86rf230 supported cca modes. In case of at86rf212
it also can support listen before transmit.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:47 +0000 (21:44 +0200)]
ieee802154: add iftypes capability
This patch adds capability flags for supported interface types.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:46 +0000 (21:44 +0200)]
cfg802154: introduce wpan phy flags
This patch introduce a flag property for the wpan phy structure.
The current flag settings in ieee802154_hw are accessable in mac802154
layer only which is okay for flags which indicates MAC handling which
are done by phy. For real PHY layer settings like cca mode, transmit
power, cca energy detection level.
The difference between these flags are that the MAC handling flags are
only handled in mac802154/HardMac layer e.g. on an interface up. The phy
settings are direct netlink calls from nl802154 into the driver layer
and the nl802154 need to have a chance to check if the driver supports
this handling before sending to the next layer.
We also check now on PHY flags while dumping and setting pib attributes.
In comparing with MIB attributes the 802.15.4 gives us an default value
which we assume when a transceiver implement less functionality. In case
of MIB settings the nl802154 layer doesn't need to check on the
ieee802154_hw flags then.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:45 +0000 (21:44 +0200)]
mac802154: remove check if operation is supported
This patch removes the check if operation is supported by driver layer.
This is done now by capabilities flags, if these are valid then the
driver should support the operation, otherwise a WARN_ON occurs.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:44 +0000 (21:44 +0200)]
mac802154: check for really changes
This patch adds check if the value is really changed inside pib/mib.
If a transceiver do support only one value for e.g. max_be then this
will also handle that the driver layer doesn't need to care about
handling to set one value only.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:43 +0000 (21:44 +0200)]
ieee802154: add several phy supported handling
This patch adds support for phy supported handling for all other already
existing handling 802.15.4 functionality. We assume now a fully 802.15.4
complaint transceiver at phy allocation. If a transceiver can support
802.15.4 default values only, then the values should be overwirtten by
values the transceiver supports. If the transceiver doesn't set the
according hardware flags, we assume the 802.15.4 defaults now which
cannot be changed.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Suggested-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:42 +0000 (21:44 +0200)]
ieee802154: introduce wpan_phy_supported
This patch introduce the wpan_phy_supported struct for wpan_phy. There
is currently no way to check if a transceiver can handle IEEE 802.15.4
complaint values. With this struct we can check before if the
transceiver supports these values before sending to driver layer.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Suggested-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Acked-by: Varka Bhadram <varkabhadram@gmail.com>
Cc: Alan Ott <alan@signal11.us>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:41 +0000 (21:44 +0200)]
ieee802154: change cca ed level to mbm
This patch change the handling of cca energy detection level from dbm to
mbm. This prepares to handle floating point cca energy detection levels
values. The old netlink 802.15.4 will convert the dbm value to mbm for
handling backward compatibility.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:40 +0000 (21:44 +0200)]
ieee802154: change transmit power to mbm
This patch change the handling of transmit power level from dbm to mbm.
This prepares to handle floating point transmit power levels values. The
old netlink 802.15.4 will convert the dbm value to mbm for handling
backward compatibility.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:39 +0000 (21:44 +0200)]
ieee802154: change transmit power to s32
This patch change the transmit power from s8 to s32. This prepares to store a
mbm value instead dbm inside the transmit power variable. The old
interface keep the a s8 dbm value, which should be backward compatibility
when assign s8 to s32.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:38 +0000 (21:44 +0200)]
ieee802154: move validation check out of softmac
This patch moves the value validation out of softmac layer. We need
to be sure now that this value is accepted by the transceiver/mac802154 or
"possible" hardmac drivers before calling rdev-ops.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 17 May 2015 19:44:37 +0000 (21:44 +0200)]
nl802154: cleanup invalid argument handling
This patch cleanups the -EINVAL cases by combining them in one
condition.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Frederic Danis [Fri, 15 May 2015 09:58:42 +0000 (11:58 +0200)]
Bluetooth: btbcm: Fix calls to __hci_cmd_sync()
Remove test of command reply status as it is already performed by
__hci_cmd_sync().
__hci_cmd_sync_ev() function already returns an error if it got a
non-zero status either through a Command Complete or a Command
Status event.
For both of these events the status is collected up in the event
handlers called by hci_event_packet() and then passed as the second
parameter to req_complete_skb(). The req_complete_skb() callback in
turn is hci_req_sync_complete() for __hci_cmd_sync_ev() which stores
the status in hdev->req_result. The hdev->req_result is then further
converted through bt_to_errno() back in __hci_cmd_sync_ev().
Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Frederic Danis [Fri, 15 May 2015 09:58:41 +0000 (11:58 +0200)]
Bluetooth: btintel: Fix calls to __hci_cmd_sync()
Remove test of command reply status as it is already performed by
__hci_cmd_sync().
__hci_cmd_sync_ev() function already returns an error if it got a
non-zero status either through a Command Complete or a Command
Status event.
For both of these events the status is collected up in the event
handlers called by hci_event_packet() and then passed as the second
parameter to req_complete_skb(). The req_complete_skb() callback in
turn is hci_req_sync_complete() for __hci_cmd_sync_ev() which stores
the status in hdev->req_result. The hdev->req_result is then further
converted through bt_to_errno() back in __hci_cmd_sync_ev().
Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Frederic Danis [Fri, 15 May 2015 09:58:40 +0000 (11:58 +0200)]
Bluetooth: btusb: Fix calls to __hci_cmd_sync()
Remove test of command reply status as it is already performed by
__hci_cmd_sync().
__hci_cmd_sync_ev() function already returns an error if it got a
non-zero status either through a Command Complete or a Command
Status event.
For both of these events the status is collected up in the event
handlers called by hci_event_packet() and then passed as the second
parameter to req_complete_skb(). The req_complete_skb() callback in
turn is hci_req_sync_complete() for __hci_cmd_sync_ev() which stores
the status in hdev->req_result. The hdev->req_result is then further
converted through bt_to_errno() back in __hci_cmd_sync_ev().
Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Frederic Danis [Fri, 15 May 2015 09:58:39 +0000 (11:58 +0200)]
Bluetooth: Fix calls to __hci_cmd_sync()
Remove test of command reply status as it is already performed by
__hci_cmd_sync().
__hci_cmd_sync_ev() function already returns an error if it got a
non-zero status either through a Command Complete or a Command
Status event.
For both of these events the status is collected up in the event
handlers called by hci_event_packet() and then passed as the second
parameter to req_complete_skb(). The req_complete_skb() callback in
turn is hci_req_sync_complete() for __hci_cmd_sync_ev() which stores
the status in hdev->req_result. The hdev->req_result is then further
converted through bt_to_errno() back in __hci_cmd_sync_ev().
Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Carlo Caione [Thu, 14 May 2015 08:49:09 +0000 (10:49 +0200)]
Bluetooth: btrtl: Create separate module for Realtek BT driver
As already done for btintel and btbcm export setup as separate function
in a vendor-specific module to hold all the Realtek specific commands.
Signed-off-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Xinming Hu [Tue, 21 Apr 2015 13:59:56 +0000 (06:59 -0700)]
Bluetooth: btmrvl: fix compilation warning
This patch fixes a compile warnning "dump_num maybe used uninitialized in
this function".
Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Leo Yan [Tue, 5 May 2015 07:09:17 +0000 (15:09 +0800)]
Bluetooth: btwilink: remove DEBUG define
Remove the DEBUG define as the debug code; so can remove mass debug info
from log buffer when using dmesg.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Pablo Neira [Tue, 12 May 2015 18:28:07 +0000 (20:28 +0200)]
net: kill useless net_*_ingress_queue() definitions when NET_CLS_ACT is unset
This fixes
4577139b2dabf589 ("net: use jump label patching for ingress qdisc in
__netif_receive_skb_core").
The only client of this is sch_ingress and it depends on NET_CLS_ACT. So
there is no way these definition can be of any help.
Cc: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 13 May 2015 19:43:01 +0000 (15:43 -0400)]
Merge branch 'packet_rollover'
Willem de Bruijn says:
====================
refine packet socket rollover:
1. mitigate a case of lock contention
2. avoid exporting resource exhaustion to other sockets,
by migrating only to a victim socket that has ample room
3. avoid reordering of most flows on the socket,
by migrating first the flow responsible for load imbalance
4. help processes detect load imbalance,
by exporting rollover counters
Context: rollover implements flow migration in packet socket fanout
groups in case of extreme load imbalance. It is a specific
implementation of migration that minimizes reordering by selecting
the same victim socket when possible (and by selecting subsequent
victims in a round robin fashion, from which its name derives).
Changes:
v2 -> v3:
- statistics: replace unsigned long with __aligned_u64
v1 -> v2:
- huge flow detection: run lockless
- huge flow detection: replace stored index with random
- contention avoidance: test in packet_poll while lock held
- contention avoidance: clear pressure sooner
packet_poll and packet_recvmsg would clear only if the sock
is empty to avoid taking the necessary lock. But,
* packet_poll already holds this lock, so a lockless variant
__packet_rcv_has_room is cheap.
* packet_recvmsg is usually called only for non-ring sockets,
which also runs lockless.
- preparation: drop "single return" patch
packet_rcv_has_room is now a locked wrapper around
__packet_rcv_has_room, achieving the same (single footer).
The benchmark mentioned in the patches is at
https://github.com/wdebruij/kerneltools/blob/master/tests/bench_rollover.c
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Tue, 12 May 2015 15:56:50 +0000 (11:56 -0400)]
packet: rollover statistics
Rollover indicates exceptional conditions. Export a counter to inform
socket owners of this state.
If no socket with sufficient room is found, rollover fails. Also count
these events.
Finally, also count when flows are rolled over early thanks to huge
flow detection, to validate its correctness.
Tested:
Read counters in bench_rollover on all other tests in the patchset
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Tue, 12 May 2015 15:56:49 +0000 (11:56 -0400)]
packet: rollover huge flows before small flows
Migrate flows from a socket to another socket in the fanout group not
only when the socket is full. Start migrating huge flows early, to
divert possible 4-tuple attacks without affecting normal traffic.
Introduce fanout_flow_is_huge(). This detects huge flows, which are
defined as taking up more than half the load. It does so cheaply, by
storing the rxhashes of the N most recent packets. If over half of
these are the same rxhash as the current packet, then drop it. This
only protects against 4-tuple attacks. N is chosen to fit all data in
a single cache line.
Tested:
Ran bench_rollover for 10 sec with 1.5 Mpps of single flow input.
lpbb5:/export/hda3/willemb# ./bench_rollover -l 1000 -r -s
cpu rx rx.k drop.k rollover r.huge r.failed
0 14 14 0 0 0 0
1 20 20 0 0 0 0
2 16 16 0 0 0 0
3 6168824 6168824 0 4867721 4867721 0
4 4867741 4867741 0 0 0 0
5 12 12 0 0 0 0
6 15 15 0 0 0 0
7 17 17 0 0 0 0
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Tue, 12 May 2015 15:56:48 +0000 (11:56 -0400)]
packet: rollover lock contention avoidance
Rollover has to call packet_rcv_has_room on sockets in the fanout
group to find a socket to migrate to. This operation is expensive
especially if the packet sockets use rings, when a lock has to be
acquired.
Avoid pounding on the lock by all sockets by temporarily marking a
socket as "under memory pressure" when such pressure is detected.
While set, only the socket owner may call packet_rcv_has_room on the
socket. Once it detects normal conditions, it clears the flag. The
socket is not used as a victim by any other socket in the meantime.
Under reasonably balanced load, each socket writer frequently calls
packet_rcv_has_room and clears its own pressure field. As a backup
for when the socket is rarely written to, also clear the flag on
reading (packet_recvmsg, packet_poll) if this can be done cheaply
(i.e., without calling packet_rcv_has_room). This is only for
edge cases.
Tested:
Ran bench_rollover: a process with 8 sockets in a single fanout
group, each pinned to a single cpu that receives one nic recv
interrupt. RPS and RFS are disabled. The benchmark uses packet
rx_ring, which has to take a lock when determining whether a
socket has room.
Sent 3.5 Mpps of UDP traffic with sufficient entropy to spread
uniformly across the packet sockets (and inserted an iptables
rule to drop in PREROUTING to avoid protocol stack processing).
Without this patch, all sockets try to migrate traffic to
neighbors, causing lock contention when searching for a non-
empty neighbor. The lock is the top 9 entries.
perf record -a -g sleep 5
- 17.82% bench_rollover [kernel.kallsyms] [k] _raw_spin_lock
- _raw_spin_lock
- 99.00% spin_lock
+ 81.77% packet_rcv_has_room.isra.41
+ 18.23% tpacket_rcv
+ 0.84% packet_rcv_has_room.isra.41
+ 5.20% ksoftirqd/6 [kernel.kallsyms] [k] _raw_spin_lock
+ 5.15% ksoftirqd/1 [kernel.kallsyms] [k] _raw_spin_lock
+ 5.14% ksoftirqd/2 [kernel.kallsyms] [k] _raw_spin_lock
+ 5.12% ksoftirqd/7 [kernel.kallsyms] [k] _raw_spin_lock
+ 5.12% ksoftirqd/5 [kernel.kallsyms] [k] _raw_spin_lock
+ 5.10% ksoftirqd/4 [kernel.kallsyms] [k] _raw_spin_lock
+ 4.66% ksoftirqd/0 [kernel.kallsyms] [k] _raw_spin_lock
+ 4.45% ksoftirqd/3 [kernel.kallsyms] [k] _raw_spin_lock
+ 1.55% bench_rollover [kernel.kallsyms] [k] packet_rcv_has_room.isra.41
On net-next with this patch, this lock contention is no longer a
top entry. Most time is spent in the actual read function. Next up
are other locks:
+ 15.52% bench_rollover bench_rollover [.] reader
+ 4.68% swapper [kernel.kallsyms] [k] memcpy_erms
+ 2.77% swapper [kernel.kallsyms] [k] packet_lookup_frame.isra.51
+ 2.56% ksoftirqd/1 [kernel.kallsyms] [k] memcpy_erms
+ 2.16% swapper [kernel.kallsyms] [k] tpacket_rcv
+ 1.93% swapper [kernel.kallsyms] [k] mlx4_en_process_rx_cq
Looking closer at the remaining _raw_spin_lock, the cost of probing
in rollover is now comparable to the cost of taking the lock later
in tpacket_rcv.
- 1.51% swapper [kernel.kallsyms] [k] _raw_spin_lock
- _raw_spin_lock
+ 33.41% packet_rcv_has_room
+ 28.15% tpacket_rcv
+ 19.54% enqueue_to_backlog
+ 6.45% __free_pages_ok
+ 2.78% packet_rcv_fanout
+ 2.13% fanout_demux_rollover
+ 2.01% netif_receive_skb_internal
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Tue, 12 May 2015 15:56:47 +0000 (11:56 -0400)]
packet: rollover only to socket with headroom
Only migrate flows to sockets that have sufficient headroom, where
sufficient is defined as having at least 25% empty space.
The kernel has three different buffer types: a regular socket, a ring
with frames (TPACKET_V[12]) or a ring with blocks (TPACKET_V3). The
latter two do not expose a read pointer to the kernel, so headroom is
not computed easily. All three needs a different implementation to
estimate free space.
Tested:
Ran bench_rollover for 10 sec with 1.5 Mpps of single flow input.
bench_rollover has as many sockets as there are NIC receive queues
in the system. Each socket is owned by a process that is pinned to
one of the receive cpus. RFS is disabled. RPS is enabled with an
identity mapping (cpu x -> cpu x), to count drops with softnettop.
lpbb5:/export/hda3/willemb# ./bench_rollover -r -l 1000 -s
Press [Enter] to exit
cpu rx rx.k drop.k rollover r.huge r.failed
0 16 16 0 0 0 0
1 21 21 0 0 0 0
2 5227502 5227502 0 0 0 0
3 18 18 0 0 0 0
4 6083289 6083289 0 5227496 0 0
5 22 22 0 0 0 0
6 21 21 0 0 0 0
7 9 9 0 0 0 0
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Tue, 12 May 2015 15:56:46 +0000 (11:56 -0400)]
packet: rollover prepare: per-socket state
Replace rollover state per fanout group with state per socket. Future
patches will add fields to the new structure.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Tue, 12 May 2015 15:56:45 +0000 (11:56 -0400)]
packet: rollover prepare: move code out of callsites
packet_rcv_fanout calls fanout_demux_rollover twice. Move all rollover
logic into the callee to simplify these callsites, especially with
upcoming changes.
The main differences between the two callsites is that the FLAG
variant tests whether the socket previously selected by another
mode (RR, RND, HASH, ..) has room before migrating flows, whereas the
rollover mode has no original socket to test.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 12 May 2015 13:31:48 +0000 (06:31 -0700)]
ipv4: __ip_local_out_sk() is static
__ip_local_out_sk() is only used from net/ipv4/ip_output.c
net/ipv4/ip_output.c:94:5: warning: symbol '__ip_local_out_sk' was not
declared. Should it be static?
Fixes:
7026b1ddb6b8 ("netfilter: Pass socket pointer down through okfn().")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 12 May 2015 13:22:56 +0000 (06:22 -0700)]
tcp/dccp: tw_timer_handler() is static
tw_timer_handler() is only used from net/ipv4/inet_timewait_sock.c
Fixes:
789f558cfb36 ("tcp/dccp: get rid of central timewait timer")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 13 May 2015 19:19:48 +0000 (15:19 -0400)]
Merge branch 'cls_flower'
Jiri Pirko says:
====================
introduce programable flow dissector and cls_flower
Per Davem's request, I prepared this patchset which introduces programmable
flow dissector. For current users of flow_keys, there is a wrapper
skb_flow_dissect_flow_keys which maintains the previous behaviour.
For purposes of cls_flower, couple of new dissection keys were introduced.
Note that this dissector can be also eventually used by openvswitch code.
Also, as a next step, I plan to get rid of *skb_flow_get_ports(export)
and *__skb_get_poff as their functionality can be now implemented by
skb_flow_dissect as well.
v2->v3:
- remove TCA_FLOWER_POLICE attr suggested by Jamal
v1->v2:
- move __skb_tx_hash rather to dev.c as suggested by Alex
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:21 +0000 (14:56 +0200)]
tc: introduce Flower classifier
This patch introduces a flow-based filter. So far, the very essential
packet fields are supported.
This patch is only the first step. There is a lot of potential performance
improvements possible to implement. Also a lot of features are missing
now. They will be addressed in follow-up patches.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:20 +0000 (14:56 +0200)]
flow_dissector: change port array into src, dst tuple
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:19 +0000 (14:56 +0200)]
flow_dissector: introduce support for Ethernet addresses
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:18 +0000 (14:56 +0200)]
flow_dissector: introduce support for ipv6 addressses
So far, only hashes made out of ipv6 addresses could be dissected. This
patch introduces support for dissection of full ipv6 addresses.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:17 +0000 (14:56 +0200)]
flow_dissector: add missing header includes
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:16 +0000 (14:56 +0200)]
flow_dissect: use programable dissector in skb_flow_dissect and friends
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:15 +0000 (14:56 +0200)]
flow_dissector: introduce programable flow_dissector
Introduce dissector infrastructure which allows user to specify which
parts of skb he wants to dissect.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:14 +0000 (14:56 +0200)]
flow_dissector: fix doc for skb_get_poff
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:13 +0000 (14:56 +0200)]
net: move netdev_pick_tx and dependencies to net/core/dev.c
next to its user. No relation to flow_dissector so it makes no sense to
have it in flow_dissector.c
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:12 +0000 (14:56 +0200)]
net: move __skb_tx_hash to dev.c
__skb_tx_hash function has no relation to flow_dissect so just move it
to dev.c
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:11 +0000 (14:56 +0200)]
net: move __skb_get_hash function declaration to flow_dissector.h
Since the definition of the function is in flow_dissector.c, it makes
sense to have the declaration in flow_dissector.h
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:10 +0000 (14:56 +0200)]
flow_dissector: fix doc for __skb_get_hash and remove couple of empty lines
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:09 +0000 (14:56 +0200)]
net: move *skb_get_poff declarations into correct header
Since these functions are defined in flow_dissector.c, move header
declarations from skbuff.h into flow_dissector.h
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:08 +0000 (14:56 +0200)]
flow_dissector: remove unused function flow_get_hlen declaration
commit
56193d1bce ("net: Add function for parsing the header length out
of linear ethernet frames") added this function declaration but it is
defined nowhere.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 12 May 2015 12:56:07 +0000 (14:56 +0200)]
net: change name of flow_dissector header to match the .c file name
add couple of empty lines on the way.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 13 May 2015 19:11:52 +0000 (15:11 -0400)]
Merge branch 'sfc-next'
Edward Cree says:
====================
sfc: Bowdlerise PTP MCDI errors
When the NIC doesn't support PTP, probe-time MCDI commands fail in
predictable ways. Instead of logging cryptic MCDI errors, just log that
PTP isn't supported.
v2: Hopefully stop Thunderbird mangling the patches.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Edward Cree [Tue, 12 May 2015 12:05:09 +0000 (13:05 +0100)]
sfc: suppress some MCDI error messages in PTP
Also, remove a needless netif_err() from efx_ptp_update_stats() - if the
MCDI fails it'll print its own error message, we don't need another that
adds no information.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Edward Cree [Tue, 12 May 2015 12:04:52 +0000 (13:04 +0100)]
sfc: nicer log message on PTP probe fail
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Mon, 11 May 2015 17:50:41 +0000 (19:50 +0200)]
net: sched: use counter to break reclassify loops
Seems all we want here is to avoid endless 'goto reclassify' loop.
tc_classify_compat even resets this counter when something other
than TC_ACT_RECLASSIFY is returned, so this skb-counter doesn't
break hypothetical loops induced by something other than perpetual
TC_ACT_RECLASSIFY return values.
skb_act_clone is now identical to skb_clone, so just use that.
Tested with following (bogus) filter:
tc filter add dev eth0 parent ffff: \
protocol ip u32 match u32 0 0 police rate 10Kbit burst \
64000 mtu 1500 action reclassify
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 13 May 2015 18:31:43 +0000 (14:31 -0400)]
Merge git://git./linux/kernel/git/davem/net
Four minor merge conflicts:
1) qca_spi.c renamed the local variable used for the SPI device
from spi_device to spi, meanwhile the spi_set_drvdata() call
got moved further up in the probe function.
2) Two changes were both adding new members to codel params
structure, and thus we had overlapping changes to the
initializer function.
3) 'net' was making a fix to sk_release_kernel() which is
completely removed in 'net-next'.
4) In net_namespace.c, the rtnl_net_fill() call for GET operations
had the command value fixed, meanwhile 'net-next' adjusted the
argument signature a bit.
This also matches example merge resolutions posted by Stephen
Rothwell over the past two days.
Signed-off-by: David S. Miller <davem@davemloft.net>
Justin Cormack [Wed, 13 May 2015 18:19:02 +0000 (19:19 +0100)]
fix missing copy_from_user in macvtap
Fix missing copy_from_user in macvtap SIOCSIFHWADDR ioctl.
Signed-off-by: Justin Cormack <justin@netbsd.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Scott Feldman [Wed, 13 May 2015 18:16:50 +0000 (11:16 -0700)]
switchdev: don't use anonymous union on switchdev attr/obj structs
Older gcc versions (e.g. gcc version 4.4.6) don't like anonymous unions
which was causing build issues on the newly added switchdev attr/obj
structs. Fix this by using named union on structs.
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 13 May 2015 16:26:28 +0000 (12:26 -0400)]
Merge branch 'switchdev-cleanups'
Scott Feldman says:
====================
switchdev: more (minor) cleanups
Fix some sparse warnings and include some documentation review comments that
didn't get picked up in the switchdev Spring Cleanup series.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Scott Feldman [Wed, 13 May 2015 06:03:54 +0000 (23:03 -0700)]
switchdev: apply review comments on documentation
There were a few review comments on the switchdev.txt documentation that
didn't get included with the Spring Cleanup series, so include them now.
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Scott Feldman [Wed, 13 May 2015 06:03:53 +0000 (23:03 -0700)]
switchdev: align comment with other comments in block
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Scott Feldman [Wed, 13 May 2015 06:03:52 +0000 (23:03 -0700)]
switchdev: sparse warning: pass ipv4 fib dst as network-byte order
And let driver convert it to host-byte order as needed.
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Scott Feldman [Wed, 13 May 2015 06:03:51 +0000 (23:03 -0700)]
switchdev: sparse warning: make __switchdev_port_obj_add static
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 13 May 2015 04:10:38 +0000 (21:10 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Handle max TX power properly wrt VIFs and the MAC in iwlwifi, from
Avri Altman.
2) Use the correct FW API for scan completions in iwlwifi, from Avraham
Stern.
3) FW monitor in iwlwifi accidently uses unmapped memory, fix from Liad
Kaufman.
4) rhashtable conversion of mac80211 station table was buggy, the
virtual interface was not taken into account. Fix from Johannes
Berg.
5) Fix deadlock in rtlwifi by not using a zero timeout for
usb_control_msg(), from Larry Finger.
6) Update reordering state before calculating loss detection, from
Yuchung Cheng.
7) Fix off by one in bluetooth firmward parsing, from Dan Carpenter.
8) Fix extended frame handling in xiling_can driver, from Jeppe
Ledet-Pedersen.
9) Fix CODEL packet scheduler behavior in the presence of TSO packets,
from Eric Dumazet.
10) Fix NAPI budget testing in fm10k driver, from Alexander Duyck.
11) macvlan needs to propagate promisc settings down the the lower
device, from Vlad Yasevich.
12) igb driver can oops when changing number of rings, from Toshiaki
Makita.
13) Source specific default routes not handled properly in ipv6, from
Markus Stenberg.
14) Use after free in tc_ctl_tfilter(), from WANG Cong.
15) Use softirq spinlocking in netxen driver, from Tony Camuso.
16) Two ARM bpf JIT fixes from Nicolas Schichan.
17) Handle MSG_DONTWAIT properly in ring based AF_PACKET sends, from
Mathias Kretschmer.
18) Fix x86 bpf JIT implementation of FROM_{BE16,LE16,LE32}, from Alexei
Starovoitov.
19) ll_temac driver DMA maps TX packet header with incorrect length, fix
from Michal Simek.
20) We removed pm_qos bits from netdevice.h, but some indirect
references remained. Kill them. From David Ahern.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (90 commits)
net: Remove remaining remnants of pm_qos from netdevice.h
e1000e: Add pm_qos header
net: phy: micrel: Fix regression in kszphy_probe
net: ll_temac: Fix DMA map size bug
x86: bpf_jit: fix FROM_BE16 and FROM_LE16/32 instructions
netns: return RTM_NEWNSID instead of RTM_GETNSID on a get
Update be2net maintainers' email addresses
net_sched: gred: use correct backlog value in WRED mode
pppoe: drop pppoe device in pppoe_unbind_sock_work
net: qca_spi: Fix possible race during probe
net: mdio-gpio: Allow for unspecified bus id
af_packet / TX_RING not fully non-blocking (w/ MSG_DONTWAIT).
bnx2x: limit fw delay in kdump to 5s after boot
ARM: net: delegate filter to kernel interpreter when imm_offset() return value can't fit into 12bits.
ARM: net fix emit_udiv() for BPF_ALU | BPF_DIV | BPF_K intruction.
mpls: Change reserved label names to be consistent with netbsd
usbnet: avoid integer overflow in start_xmit
netxen_nic: use spin_[un]lock_bh around tx_clean_lock (2)
net: xgene_enet: Set hardware dependency
net: amd-xgbe: Add hardware dependency
...
David Ahern [Tue, 12 May 2015 15:37:00 +0000 (09:37 -0600)]
net: Remove remaining remnants of pm_qos from netdevice.h
Commit
e2c6544829f removed pm_qos from struct net_device but left the
comment and header file. Remove those.
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Tue, 12 May 2015 15:36:59 +0000 (09:36 -0600)]
e1000e: Add pm_qos header
Commit
e2c6544829f moved pm_qos_req to e1000_adapter. Add the header file
that defines the struct.
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ying Xue [Tue, 12 May 2015 10:29:44 +0000 (18:29 +0800)]
net: make skb_dst_pop routine static
As xfrm_output_one() is the only caller of skb_dst_pop(), we should
make skb_dst_pop() localized.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Niklas Cassel [Tue, 12 May 2015 07:43:14 +0000 (09:43 +0200)]
net: phy: micrel: Fix regression in kszphy_probe
Don't do clock-mode-select if clk == NULL,
since when building without CONFIG_HAVE_CLK,
clk_get returns NULL and clk_get_rate returns 0.
Doing clock-mode-select in this cause causes kszphy_probe to
return -EINVAL and thus prevents the device from being probed.
The original code (before regression) would return 0
when building without CONFIG_HAVE_CLK.
Cc: stable <stable@vger.kernel.org> # 3.18+
Fixes:
1fadee0c3645 ("net/phy: micrel: Add clock support for
KSZ8021/KSZ8031")
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Niklas Cassel <niklass@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michal Simek [Tue, 12 May 2015 06:06:15 +0000 (08:06 +0200)]
net: ll_temac: Fix DMA map size bug
DMA allocates skb->len instead of headlen
which is used for DMA.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Holzheu [Tue, 12 May 2015 05:22:44 +0000 (22:22 -0700)]
test_bpf: add 173 new testcases for eBPF
add an exhaustive set of eBPF tests bringing total to:
test_bpf: Summary: 233 PASSED, 0 FAILED, [0/226 JIT'ed]
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Brenden Blanco [Tue, 12 May 2015 04:25:51 +0000 (21:25 -0700)]
samples/bpf: fix in-source build of samples with clang
in-source build of 'make samples/bpf/' was incorrectly
using default compiler instead of invoking clang/llvm.
out-of-source build was ok.
Fixes:
a80857822b0c ("samples: bpf: trivial eBPF program in C")
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexei Starovoitov [Tue, 12 May 2015 06:25:16 +0000 (23:25 -0700)]
x86: bpf_jit: fix FROM_BE16 and FROM_LE16/32 instructions
FROM_BE16:
'ror %reg, 8' doesn't clear upper bits of the register,
so use additional 'movzwl' insn to zero extend 16 bits into 64
FROM_LE16:
should zero extend lower 16 bits into 64 bit
FROM_LE32:
should zero extend lower 32 bits into 64 bit
Fixes:
89aa075832b0 ("net: sock: allow eBPF programs to be attached to sockets")
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hariprasad Shenai [Mon, 11 May 2015 23:13:43 +0000 (04:43 +0530)]
cxgb4/cxgb4vf: Cleanup macros, add comments and add new MACROS
Cleanup few MACROS left out in t4_hw.h to be consistent with the
existing ones. Also replace few hardcoded values with MACROS. Also
update comments for some code
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
KY Srinivasan [Mon, 11 May 2015 22:39:46 +0000 (15:39 -0700)]
hv_netvsc: Use the xmit_more skb flag to optimize signaling the host
Based on the information given to this driver (via the xmit_more skb flag),
we can defer signaling the host if more packets are on the way. This will help
make the host more efficient since it can potentially process a larger batch of
packets. Implement this optimization.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexei Starovoitov [Mon, 11 May 2015 22:19:48 +0000 (15:19 -0700)]
pktgen: fix packet generation
pkt_gen->last_ok was not set properly, so after the first burst
pktgen instead of allocating new packet, will reuse old one, advance
eth_type_trans further, which would mean the stack will be seeing very
short bogus packets.
Fixes:
62f64aed622b ("pktgen: introduce xmit_mode '<start_xmit|netif_receive>'")
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 13 May 2015 03:08:47 +0000 (23:08 -0400)]
Merge branch 'systemport-irq-coalesce'
Florian Fainelli says:
====================
net: systemport: interrupt coalescing support
This patch series adds support for RX & TX interrupt coalescing in the
systemport driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 11 May 2015 22:12:42 +0000 (15:12 -0700)]
net: systemport: Implement RX coalescing control knobs
Similarly to the TX path, allow the RX path to be configured with both
'rx-frames' and 'rx-usecs' coalescing parameters.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 11 May 2015 22:12:41 +0000 (15:12 -0700)]
net: systemport: Implement TX coalescing control knobs
Add the ability to configure both 'tx-frames' which controls how many frames
are doing to trigger a single interrupt and 'tx-usecs' which dictates how long
to wait before an interrupt should be services.
Since our timer resolution is close to 8.192 us, we round up to the nearest
value the 'tx-usecs' timeout value.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Denys Vlasenko [Mon, 11 May 2015 19:17:53 +0000 (21:17 +0200)]
net: deinline netif_tx_stop_all_queues(), remove WARN_ON in netif_tx_stop_queue()
These functions compile to 60 bytes of machine code each.
With this .config: http://busybox.net/~vda/kernel_config
there are 617 calls of netif_tx_stop_queue()
and 49 calls of netif_tx_stop_all_queues() in vmlinux.
To fix this, remove WARN_ON in netif_tx_stop_queue()
as suggested by davem, and deinline netif_tx_stop_all_queues().
Change in code size is about 20k:
text data bss dec hex filename
82426986 22255416 20627456 125309858 77813a2 vmlinux.before
82406248 22255416 20627456 125289120 777c2a0 vmlinux
gcc-4.7.2 still creates deinlined version of netif_tx_stop_queue
sometimes:
$ nm --size-sort vmlinux | grep netif_tx_stop_queue | wc -l
190
ffffffff81b558a8 <netif_tx_stop_queue>:
ffffffff81b558a8: 55 push %rbp
ffffffff81b558a9: 48 89 e5 mov %rsp,%rbp
ffffffff81b558ac: f0 80 8f e0 01 00 00 lock orb $0x1,0x1e0(%rdi)
ffffffff81b558b3: 01
ffffffff81b558b4: 5d pop %rbp
ffffffff81b558b5: c3 retq
This needs additional fixing.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Alexei Starovoitov <alexei.starovoitov@gmail.com>
CC: Alexander Duyck <alexander.duyck@gmail.com>
CC: Joe Perches <joe@perches.com>
CC: David S. Miller <davem@davemloft.net>
CC: Jiri Pirko <jpirko@redhat.com>
CC: linux-kernel@vger.kernel.org
CC: netdev@vger.kernel.org
CC: netfilter-devel@vger.kernel.org
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>