NCI provides possible way to run loopback testing has done over HCI.
For us it offers many advantages:
- It simplifies the code: No more need for a vendor_cmds structure
- Loopback over HCI may not be supported in future st-nci firmware
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
nfc: nci: Add an additional parameter to identify a connection id
According to NCI specification, destination type and destination
specific parameters shall uniquely identify a single destination
for the Logical Connection.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
NFC: st-nci: spi: Drop two useless checks in ACPI probe path
When st_nci_spi_acpi_request_resources() gets called we
already know that the entries in ->acpi_match_table have
matched ACPI ID of the device.
In addition spi_device pointer cannot be NULL in any case
(otherwise SPI core would not call ->probe() for the driver
in the first place).
Drop the two useless checks from the driver.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
NFC: st-nci: i2c: Drop two useless checks in ACPI probe path
When st_nci_i2c_acpi_request_resources() gets called we already
know that the entries in ->acpi_match_table have matched ACPI ID
of the device.
In addition I2C client pointer cannot be NULL in any case
(otherwise I2C core would not call ->probe() for the driver in
the first place).
Drop the two useless checks from the driver.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
NFC: st21nfca: Drop two useless checks in ACPI probe path
When st21nfca_hci_i2c_acpi_request_resources() gets called we
already know that the entries in ->acpi_match_table have matched
ACPI ID of the device.
In addition I2C client pointer cannot be NULL in any case
(otherwise I2C core would not call ->probe() for the driver in
the first place).
Drop the two useless checks from the driver.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
nfc: st21nfca: A APDU_READER_GATE pipe is unexpected on a UICC
An APDU_READER_GATE pipe is not expected on a UICC. Be more
explicit so that an other secure element form factor (SD card)
does not prompt this message.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
nfc: st-nci: A APDU_READER_GATE pipe is unexpected on a UICC
An APDU_READER_GATE pipe is not expected on a UICC. Be more
explicit so that an other secure element form factor (SD card)
does not prompt this message.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
nfc: st21nfca: i2c: Change ST21NFCA_GPIO_NAME_RESET to match DT
Since
commit 10cf4899f8af ("gpiolib: tighten up ACPI legacy gpio lookups")
If _DSD properties are available in an ACPI node, we are not
allowed to fallback to _CRS data to retrieve gpio properties.
This was causing us to fail if uicc-present and/or ese-present
are defined.
To be consistent with devicetree change ST_NCI_GPIO_NAME_RESET
content to reset so that acpi_find_gpio in drivers/gpio/gpiolib.c
will look for reset-gpios. In the mean time the ACPI table needs
to be fixed as follow:
Device (NFC1)
{
Name (_ADR, Zero) // _ADR: Address
Name (_HID, "SMO2100") // _HID: Hardware ID
Name (_CID, "SMO2100") // _CID: Compatible ID
Name (_DDN, "SMO NFC") // _DDN: DOS Device Name
Name (_UID, One) // _UID: Unique ID
Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
{
Name (SBUF, ResourceTemplate ()
{
I2cSerialBus (0x0008, ControllerInitiated, 400000,
AddressingMode7Bit, "\\_SB.I2C7",
0x00, ResourceConsumer, ,)
GpioInt (Edge, ActiveHigh, ExclusiveAndWake, PullNone, 0x0000,
"\\_SB.GPO2", 0x00, ResourceConsumer, ,)
{ // Pin list
0x0001
}
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO2", 0x00, ResourceConsumer, ,)
{ // Pin list
0x0002,
}
})
Name (_DSD, Package (0x02)
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */,
Package (0x03)
{
Package (0x02) { "uicc-present", 1 },
Package (0x02) { "ese-present", 1 },
Package (0x02) { "enable-gpios", Package(0x04) { ^NFC1, 1, 0, 0} },
}
})
Return (SBUF) /* \_SB_.I2C7.NFC1._CRS.SBUF */
}
Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (0x0F)
}
}
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
nfc: st-nci: spi: Change ST_NCI_GPIO_NAME_RESET to match DT
Since
commit 10cf4899f8af ("gpiolib: tighten up ACPI legacy gpio lookups")
If _DSD properties are available in an ACPI node, we are not
allowed to fallback to _CRS data to retrieve gpio properties.
This was causing us to fail if uicc-present and/or ese-present
are defined.
To be consistent with devicetree change ST_NCI_GPIO_NAME_RESET
content to reset so that acpi_find_gpio in drivers/gpio/gpiolib.c
will look for reset-gpios. In the mean time the ACPI table needs
to be fixed as follow (Tested on Minnowboard Max):
Device (NFC1)
{
Name (_ADR, Zero) // _ADR: Address
Name (_HID, "SMO2101") // _HID: Hardware ID
Name (_CID, "SMO2101") // _CID: Compatible ID
Name (_DDN, "SMO NFC") // _DDN: DOS Device Name
Name (_UID, One) // _UID: Unique ID
Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
{
Name (SBUF, ResourceTemplate ()
{
SpiSerialBus (0, PolarityLow, FourWireMode, 8,
ControllerInitiated, 4000000, ClockPolarityLow,
ClockPhaseFirst, "\\_SB.SPI1",
0x00, ResourceConsumer, ,)
GpioInt (Edge, ActiveHigh, ExclusiveAndWake, PullNone, 0x0000,
"\\_SB.GPO2", 0x00, ResourceConsumer, ,)
{ // Pin list
0x0001
}
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO2", 0x00, ResourceConsumer, ,)
{ // Pin list
0x0002,
}
})
Name (_DSD, Package (0x02)
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */,
Package (0x03)
{
Package (0x02) { "uicc-present", 1 },
Package (0x02) { "ese-present", 1 },
Package (0x02) { "reset-gpios", Package(0x04) { ^NFC1, 1, 0, 0} },
}
})
Return (SBUF) /* \_SB_.SPI1.NFC1._CRS.SBUF */
}
Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (0x0F)
}
}
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
nfc: st-nci: i2c: Change ST_NCI_GPIO_NAME_RESET to match DT
Since
commit 10cf4899f8af ("gpiolib: tighten up ACPI legacy gpio lookups")
If _DSD properties are available in an ACPI node, we are not
allowed to fallback to _CRS data to retrieve gpio properties.
This was causing us to fail if uicc-present and/or ese-present
are defined.
To be consistent with devicetree change ST_NCI_GPIO_NAME_RESET
content to reset so that acpi_find_gpio in drivers/gpio/gpiolib.c
will look for reset-gpios. In the mean time the ACPI table needs
to be fixed as follow:
Device (NFC1)
{
Name (_ADR, Zero) // _ADR: Address
Name (_HID, "SMO2101") // _HID: Hardware ID
Name (_CID, "SMO2101") // _CID: Compatible ID
Name (_DDN, "SMO NFC") // _DDN: DOS Device Name
Name (_UID, One) // _UID: Unique ID
Method (_CRS, 0, NotSerialized) // _CRS: Current Resource Settings
{
Name (SBUF, ResourceTemplate ()
{
I2cSerialBus (0x0008, ControllerInitiated, 400000,
AddressingMode7Bit, "\\_SB.I2C7",
0x00, ResourceConsumer, ,)
GpioInt (Edge, ActiveHigh, ExclusiveAndWake, PullNone, 0x0000,
"\\_SB.GPO2", 0x00, ResourceConsumer, ,)
{ // Pin list
0x0001
}
GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly,
"\\_SB.GPO2", 0x00, ResourceConsumer, ,)
{ // Pin list
0x0002,
}
})
Name (_DSD, Package (0x02)
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */,
Package (0x03)
{
Package (0x02) { "uicc-present", 1 },
Package (0x02) { "ese-present", 1 },
Package (0x02) { "reset-gpios", Package(0x04) { ^NFC1, 1, 0, 0} },
}
})
Return (SBUF) /* \_SB_.I2C7.NFC1._CRS.SBUF */
}
Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (0x0F)
}
}
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
NFC: pn533: Separate physical layer from the core implementation
The driver now has all core stuff isolated in one file, and all
the hardware link specifics in another. Writing a pn533 driver
on top of another hardware link is now just a matter of adding a
new file for that new hardware specifics.
The first user of this separation will be the i2c based pn532
driver that reuses pn533 core implementation on top of an i2c
layer.
Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
sock_put => socket refcnt-- => If the corresponding
socket gets closed in the meantime socket
will be destructed
sk_free
__sk_free
sk->sk_destruct = rawsock_destruct
nfc_deactivate_target
ops->deactivate_target = pn533_deactivate_target
pn533_send_cmd_sync
pn533_send_cmd_async
__pn533_send_async
list_add_tail(&cmd->queue,&dev->cmd_queue)
=> add to command list because
a command is currently
processed
wait_for_completion
=> the workqueue thread waits
here because it is the one
processing the commands
=> deadlock
To fix the deadlock pn533_deactivate_target is changed to
issue the PN533_CMD_IN_RELEASE command in async mode. This
way nothing blocks and the release command is executed after
the current command.
Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
NFC: pn533: Send ATR_REQ only if NFC_PROTO_NFC_DEP bit is set
Currently it is not possible to only poll for passive targets
with the pn533 driver. To change this ATR_REQ is only sent when
NFC_PROTO_NFC_DEP is explicitly requested in poll_protocols.
As most implementations (e.g. neard) poll for all protocols
that are reported to be supported by the adapter, this should
not have much of an effect on current implementations.
Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Eric Dumazet [Sat, 9 Apr 2016 15:01:13 +0000 (08:01 -0700)]
ipv6: fix inet6_lookup_listener()
A stupid refactoring bug in inet6_lookup_listener() needs to be fixed
in order to get proper SO_REUSEPORT behavior.
Fixes: 3b24d854cb35 ("tcp/dccp: do not touch listener sk_refcnt under synflood") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Maciej Żenczykowski <maze@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
John Allen [Wed, 6 Apr 2016 16:49:55 +0000 (11:49 -0500)]
ibmvnic: Enable use of multiple tx/rx scrqs
Enables the use of multiple transmit and receive scrqs allowing the ibmvnic
driver to take advantage of multiqueue functionality. To achieve this, the
driver must implement the process of negotiating the maximum number of
queues allowed by the server. Initially, the driver will attempt to login
with the maximum number of tx and rx queues supported by the server. If
the server fails to allocate the requested number of scrqs, it will return
partial success in the login response. In this case, we must reinitiate
the login process from the request capabilities stage and attempt to login
requesting fewer scrqs.
Signed-off-by: John Allen <jallen@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 Apr 2016 20:50:41 +0000 (16:50 -0400)]
Merge branch 'dsa-voidify-ops'
Vivien Didelot says:
====================
net: dsa: voidify STP setter and FDB/VLAN add ops
Neither the DSA layer nor the bridge code (see br_set_state) really care
about eventual errors from STP state setters, so make it void.
The DSA layer separates the prepare and commit phases of switchdev in
two different functions. Logical errors must not happen in commit
routines, so make them void.
Changes v1 -> v2:
- rename port_stp_update to port_stp_state_set
- don't change code flow of bcm_sf2_sw_br_set_stp_state
- prefer netdev_err over netdev_warn
====================
Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Vivien Didelot [Wed, 6 Apr 2016 15:55:05 +0000 (11:55 -0400)]
net: dsa: make the VLAN add function return void
The switchdev design implies that a software error should not happen in
the commit phase since it must have been previously reported in the
prepare phase. If an hardware error occurs during the commit phase,
there is nothing switchdev can do about it.
The DSA layer separates port_vlan_prepare and port_vlan_add for
simplicity and convenience. If an hardware error occurs during the
commit phase, there is no need to report it outside the driver itself.
Make the DSA port_vlan_add routine return void for explicitness.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vivien Didelot [Wed, 6 Apr 2016 15:55:04 +0000 (11:55 -0400)]
net: dsa: make the FDB add function return void
The switchdev design implies that a software error should not happen in
the commit phase since it must have been previously reported in the
prepare phase. If an hardware error occurs during the commit phase,
there is nothing switchdev can do about it.
The DSA layer separates port_fdb_prepare and port_fdb_add for simplicity
and convenience. If an hardware error occurs during the commit phase,
there is no need to report it outside the DSA driver itself.
Make the DSA port_fdb_add routine return void for explicitness.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vivien Didelot [Wed, 6 Apr 2016 15:55:03 +0000 (11:55 -0400)]
net: dsa: make the STP state function return void
The DSA layer doesn't care about the return code of the port_stp_update
routine, so make it void in the layer and the DSA drivers.
Replace the useless dsa_slave_stp_update function with a
dsa_slave_stp_state function used to reply to the switchdev
SWITCHDEV_ATTR_ID_PORT_STP_STATE attribute.
In the meantime, rename port_stp_update to port_stp_state_set to
explicit the state change.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vivien Didelot [Wed, 6 Apr 2016 15:06:20 +0000 (11:06 -0400)]
net: dsa: document missing functions
Add description for the missing port_vlan_prepare, port_fdb_prepare,
port_fdb_dump functions in the DSA documentation.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 Apr 2016 20:42:31 +0000 (16:42 -0400)]
Merge tag 'mac80211-next-for-davem-2016-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
For the 4.7 cycle, we have a number of changes:
* Bob's mesh mode rhashtable conversion, this includes
the rhashtable API change for allocation flags
* BSSID scan, connect() command reassoc support (Jouni)
* fast (optimised data only) and support for RSS in mac80211 (myself)
* various smaller changes
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 5 Apr 2016 20:33:17 +0000 (22:33 +0200)]
bpf, verifier: further improve search pruning
The verifier needs to go through every path of the program in
order to check that it terminates safely, which can be quite a
lot of instructions that need to be processed f.e. in cases with
more branchy programs. With search pruning from f1bca824dabb ("bpf:
add search pruning optimization to verifier") the search space can
already be reduced significantly when the verifier detects that
a previously walked path with same register and stack contents
terminated already (see verifier's states_equal()), so the search
can skip walking those states.
When working with larger programs of > ~2000 (out of max 4096)
insns, we found that the current limit of 32k instructions is easily
hit. For example, a case we ran into is that the search space cannot
be pruned due to branches at the beginning of the program that make
use of certain stack space slots (STACK_MISC), which are never used
in the remaining program (STACK_INVALID). Therefore, the verifier
needs to walk paths for the slots in STACK_INVALID state, but also
all remaining paths with a stack structure, where the slots are in
STACK_MISC, which can nearly double the search space needed. After
various experiments, we find that a limit of 64k processed insns is
a more reasonable choice when dealing with larger programs in practice.
This still allows to reject extreme crafted cases that can have a
much higher complexity (f.e. > ~300k) within the 4096 insns limit
due to search pruning not being able to take effect.
Furthermore, we found that a lot of states can be pruned after a
call instruction, f.e. we were able to reduce the search state by
~35% in some cases with this heuristic, trade-off is to keep a bit
more states in env->explored_states. Usually, call instructions
have a number of preceding register assignments and/or stack stores,
where search pruning has a better chance to suceed in states_equal()
test. The current code marks the branch targets with STATE_LIST_MARK
in case of conditional jumps, and the next (t + 1) instruction in
case of unconditional jump so that f.e. a backjump will walk it. We
also did experiments with using t + insns[t].off + 1 as a marker in
the unconditionally jump case instead of t + 1 with the rationale
that these two branches of execution that converge after the label
might have more potential of pruning. We found that it was a bit
better, but not necessarily significantly better than the current
state, perhaps also due to clang not generating back jumps often.
Hence, we left that as is for now.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
devlink: share user_ptr pointer for both devlink and devlink_port
Ptr to devlink structure can be easily obtained from
devlink_port->devlink. So share user_ptr[0] pointer for both and leave
user_ptr[1] free for other users.
Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mlxsw: Move devlink port registration into common core code
Remove devlink port reg/unreg from spectrum and switchx2 code and rather
do the common work in core. That also ensures code separation where
devlink is only used in core.c.
Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
devlink: remove implicit type set in port register
As we rely on caller zeroing or correctly set the struct before the call,
this implicit type set is either no-op (DEVLINK_PORT_TYPE_NOTSET is 0)
or it rewrites wanted value. So remove this.
Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 Apr 2016 19:26:07 +0000 (15:26 -0400)]
Merge branch 'nfp-mtu-buffer-reconfig'
Jakub Kicinski says:
====================
MTU/buffer reconfig changes
I re-discussed MPLS/MTU internally, dropped it from the patch 1,
re-tested everything, found out I forgot about debugfs pointers,
fixed that as well.
v5:
- don't reserve space in RX buffers for MPLS label stack
(patch 1);
- fix debugfs pointers to ring structures (patch 5).
v4:
- cut down on unrelated patches;
- don't "close" the device on error path.
--- v4 cover letter
Previous series included some not entirely related patches,
this one is cut down. Main issue I'm trying to solve here
is that .ndo_change_mtu() in nfpvf driver is doing full
close/open to reallocate buffers - which if open fails
can result in device being basically closed even though
the interface is started. As suggested by you I try to move
towards a paradigm where the resources are allocated first
and the MTU change is only done once I'm certain (almost)
nothing can fail. Almost because I need to communicate
with FW and that can always time out.
Patch 1 fixes small issue. Next 10 patches reorganize things
so that I can easily allocate new rings and sets of buffers
while the device is running. Patches 13 and 15 reshape the
.ndo_change_mtu() and ethtool's ring-resize operation into
desired form.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:46 +0000 (19:39 +0100)]
nfp: convert .ndo_change_mtu() to prepare/commit paradigm
When changing MTU on running device first allocate new rings
and buffers and once it succeeds proceed with changing MTU.
Allocation of new rings is not really necessary for this
operation - it's done to keep the code simple and because
size of the extra ring memory is quite small compared to
the size of buffers.
Operation can still fail midway through if FW communication
times out. In that case we retry with old MTU (rings).
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:45 +0000 (19:39 +0100)]
nfp: propagate list buffer size in struct rx_ring
Free list buffer size needs to be propagated to few functions
as a parameter and added to struct nfp_net_rx_ring since soon
some of the functions will be reused to manage rings with
buffers of size different than nn->fl_bufsz.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:44 +0000 (19:39 +0100)]
nfp: sync ring state during FW reconfiguration
FW reconfiguration in .ndo_open()/.ndo_stop() should reset/
restore queue state. Since we need IRQs to be disabled when
filling rings on RX path we have to move disable_irq() from
.ndo_open() all the way up to IRQ allocation.
nfp_net_start_vec() becomes trivial now so it's inlined.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:42 +0000 (19:39 +0100)]
nfp: move filling ring information to FW config
nfp_net_[rt]x_ring_{alloc,free} should only allocate or free
ring resources without touching the device. Move setting
parameters in the BAR to separate functions. This will make
it possible to reuse alloc/free functions to allocate new
rings while the device is running.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:41 +0000 (19:39 +0100)]
nfp: preallocate RX buffers early in .ndo_open
We want the .ndo_open() to have following structure:
- allocate resources;
- configure HW/FW;
- enable the device from stack perspective.
Therefore filling RX rings needs to be moved to the beginning
of .ndo_open().
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:40 +0000 (19:39 +0100)]
nfp: reorganize initial filling of RX rings
Separate allocation of buffers from giving them to FW,
thanks to this it will be possible to move allocation
earlier on .ndo_open() path and reuse buffers during
runtime reconfiguration.
Similar to TX side clean up the spill of functionality
from flush to freeing the ring. Unlike on TX side,
RX ring reset does not free buffers from the ring.
Ring reset means only that FW pointers are zeroed and
buffers on the ring must be placed in [0, cnt - 1)
positions.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:39 +0000 (19:39 +0100)]
nfp: cleanup tx ring flush and rename to reset
Since we never used flush without freeing the ring later
the functionality of the two operations is mixed.
Rename flush to ring reset and move there all the things
which have to be done after FW ring state is cleared.
While at it do some clean-ups.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:37 +0000 (19:39 +0100)]
nfp: make *x_ring_init do all the init
nfp_net_[rt]x_ring_init functions used to be called from probe
path only and some of their functionality was spilled to the
call site. In order to reuse them for ring reconfiguration
we need them to do all the init.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:36 +0000 (19:39 +0100)]
nfp: break up nfp_net_{alloc|free}_rings
nfp_net_{alloc|free}_rings contained strange mix of allocations
and vector initialization. Remove it, declare vector init as
a separate function and handle allocations explicitly.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:35 +0000 (19:39 +0100)]
nfp: move link state interrupt request/free calls
We need to be able to disable the link state interrupt when
the device is brought down. We used to just free the IRQ
at the beginning of .ndo_stop(). As we now move towards
more ordered .ndo_open()/.ndo_stop() paths LSC allocation
should be placed in the "allocate resource" section.
Since the IRQ can't be freed early in .ndo_stop(), it is
disabled instead.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 7 Apr 2016 18:39:34 +0000 (19:39 +0100)]
nfp: correct RX buffer length calculation
When calculating the RX buffer length we need to account
for up to 2 VLAN tags. Rounding up to 1k is an relic of
a distant past and can be removed. While at it also remove
trivial print statement.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 Apr 2016 16:13:30 +0000 (12:13 -0400)]
Merge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:
====================
10GbE Intel Wired LAN Driver Updates 2016-04-07
This series contains updates to ixgbe and ixgbevf.
This entire series (except for one patch from Alex) comes from Mark and
is mainly to add support for our new MAC (x550em_a).
So let's get Alex's patch out of the way first before we cover Mark's
many changes. Alex does his enable bulk free in transmit cleanup for
ixgbe and ixgbevf, like his has done for all of our other drivers.
First Mark cleans up registers that were not being used, so do some
house cleaning. Then to avoid casting lan_id and func fields, just
make them u8 since they only hold small values anyways. Found and
fixed an issue where on read operations it could be possible to
modify locations beyond the length passed in, so change the check
to round up in the same way. Cleaned up the interface for issuing
firmware commands to use a void * instead of a u32 * which eliminates
a number of casts. Added support for the new MAC and provided method
pointers and use them to access IOSF-attached devices, since the
new MAC will also need a new access method. Added support for SFPs
with an external retimer and for an SGMII backplane interface.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 8 Apr 2016 01:04:27 +0000 (21:04 -0400)]
Merge branch 'bpf-tracepoints'
Alexei Starovoitov says:
====================
allow bpf attach to tracepoints
Hi Steven, Peter,
v1->v2: addressed Peter's comments:
- fixed wording in patch 1, added ack
- refactored 2nd patch into 3:
2/10 remove unused __perf_addr macro which frees up
an argument in perf_trace_buf_submit
3/10 split perf_trace_buf_prepare into alloc and update parts, so that bpf
programs don't have to pay performance penalty for update of struct trace_entry
which is not going to be accessed by bpf
4/10 actual addition of bpf filter to perf tracepoint handler is now trivial
and bpf prog can be used as proper filter of tracepoints
v1 cover:
last time we discussed bpf+tracepoints it was a year ago [1] and the reason
we didn't proceed with that approach was that bpf would make arguments
arg1, arg2 to trace_xx(arg1, arg2) call to be exposed to bpf program
and that was considered unnecessary extension of abi. Back then I wanted
to avoid the cost of buffer alloc and field assign part in all
of the tracepoints, but looks like when optimized the cost is acceptable.
So this new apporach doesn't expose any new abi to bpf program.
The program is looking at tracepoint fields after they were copied
by perf_trace_xx() and described in /sys/kernel/debug/tracing/events/xxx/format
We made a tool [2] that takes arguments from /sys/.../format and works as:
$ tplist.py -v random:urandom_read
int got_bits;
int pool_left;
int input_left;
Then these fields can be copy-pasted into bpf program like:
struct urandom_read {
__u64 hidden_pad;
int got_bits;
int pool_left;
int input_left;
};
and the program can use it:
SEC("tracepoint/random/urandom_read")
int bpf_prog(struct urandom_read *ctx)
{
return ctx->pool_left > 0 ? 1 : 0;
}
This way the program can access tracepoint fields faster than
equivalent bpf+kprobe program, which is the main goal of these patches.
Patch 1-4 are simple changes in perf core side, please review.
I'd like to take the whole set via net-next tree, since the rest of
the patches might conflict with other bpf work going on in net-next
and we want to avoid cross-tree merge conflicts.
Alternatively we can put patches 1-4 into both tip and net-next.
Patch 9 is an example of access to tracepoint fields from bpf prog.
Patch 10 is a micro benchmark for bpf+kprobe vs bpf+tracepoint.
Note that for actual tracing tools the user doesn't need to
run tplist.py and copy-paste fields manually. The tools do it
automatically. Like argdist tool [3] can be used as:
$ argdist -H 't:block:block_rq_complete():u32:nr_sector'
where 'nr_sector' is name of tracepoint field taken from
/sys/kernel/debug/tracing/events/block/block_rq_complete/format
and appropriate bpf program is generated on the fly.
samples/bpf: add tracepoint vs kprobe performance tests
the first microbenchmark does
fd=open("/proc/self/comm");
for() {
write(fd, "test");
}
and on 4 cpus in parallel:
writes per sec
base (no tracepoints, no kprobes) 930k
with kprobe at __set_task_comm() 420k
with tracepoint at task:task_rename 730k
For kprobe + full bpf program manully fetches oldcomm, newcomm via bpf_probe_read.
For tracepint bpf program does nothing, since arguments are copied by tracepoint.
2nd microbenchmark does:
fd=open("/dev/urandom");
for() {
read(fd, buf);
}
and on 4 cpus in parallel:
reads per sec
base (no tracepoints, no kprobes) 300k
with kprobe at urandom_read() 279k
with tracepoint at random:urandom_read 290k
bpf progs attached to kprobe and tracepoint are noop.
Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
during bpf program loading remember the last byte of ctx access
and at the time of attaching the program to tracepoint check that
the program doesn't access bytes beyond defined in tracepoint fields
This also disallows access to __dynamic_array fields, but can be
relaxed in the future.
Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
perf, bpf: allow bpf programs attach to tracepoints
introduce BPF_PROG_TYPE_TRACEPOINT program type and allow it to be attached
to the perf tracepoint handler, which will copy the arguments into
the per-cpu buffer and pass it to the bpf program as its first argument.
The layout of the fields can be discovered by doing
'cat /sys/kernel/debug/tracing/events/sched/sched_switch/format'
prior to the compilation of the program with exception that first 8 bytes
are reserved and not accessible to the program. This area is used to store
the pointer to 'struct pt_regs' which some of the bpf helpers will use:
+---------+
| 8 bytes | hidden 'struct pt_regs *' (inaccessible to bpf program)
+---------+
| N bytes | static tracepoint fields defined in tracepoint/format (bpf readonly)
+---------+
| dynamic | __dynamic_array bytes of tracepoint (inaccessible to bpf yet)
+---------+
Not that all of the fields are already dumped to user space via perf ring buffer
and broken application access it directly without consulting tracepoint/format.
Same rule applies here: static tracepoint fields should only be accessed
in a format defined in tracepoint/format. The order of fields and
field sizes are not an ABI.
Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
perf: split perf_trace_buf_prepare into alloc and update parts
split allows to move expensive update of 'struct trace_entry' to later phase.
Repurpose unused 1st argument of perf_tp_event() to indicate event type.
While splitting use temp variable 'rctx' instead of '*rctx' to avoid
unnecessary loads done by the compiler due to -fno-strict-aliasing
Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
now all calls to perf_trace_buf_submit() pass 0 as 4th
argument which will be repurposed in the next patch which will
change the meaning of 1st arg of perf_tp_event() to event_type
Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
avoid memset in perf_fetch_caller_regs, since it's the critical path of all tracepoints.
It's called from perf_sw_event_sched, perf_event_task_sched_in and all of perf_trace_##call
with this_cpu_ptr(&__perf_regs[..]) which are zero initialized by perpcu init logic and
subsequent call to perf_arch_fetch_caller_regs initializes the same fields on all archs,
so we can safely drop memset from all of the above cases and move it into
perf_ftrace_function_call that calls it with stack allocated pt_regs.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Mark Rustad [Fri, 1 Apr 2016 19:18:51 +0000 (12:18 -0700)]
ixgbe: Bump version number
Update ixgbe version number.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Fri, 1 Apr 2016 19:18:35 +0000 (12:18 -0700)]
ixgbe: Add support for SFPs with retimer
Add support for SFPs with an external retimer.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Fri, 1 Apr 2016 19:18:30 +0000 (12:18 -0700)]
ixgbe: Introduce function to control MDIO speed
Move code that controls MDIO speed into a new function because
there will be more MACs that need the control.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Fri, 1 Apr 2016 19:18:25 +0000 (12:18 -0700)]
ixgbe: Read and parse NW_MNG_IF_SEL register
Read the IXGBE_NW_MNG_IF_SEL register and use it to set interface
attributes.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Fri, 1 Apr 2016 19:18:20 +0000 (12:18 -0700)]
ixgbe: Read and set instance id
Read the instance number from EEPROM and save it for later use.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Fri, 1 Apr 2016 19:18:14 +0000 (12:18 -0700)]
ixgbe: Use new methods for PHY access
Now x550em_a devices will use a new method for PHY access that will
get the firmware token for each access.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Fri, 1 Apr 2016 19:18:09 +0000 (12:18 -0700)]
ixgbe: Add support for x550em_a 10G MAC type
Add support for x550em_a 10G MAC type to the ixgbe driver. The new
MAC includes new firmware commands that need to be used to control
PHY and IOSF access, so that support is also added. The interface
supported is a native SFP+ interface.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Fri, 1 Apr 2016 19:18:04 +0000 (12:18 -0700)]
ixgbe: Use method pointer to access IOSF devices
Provide method pointers and use them to access IOSF-attached
devices. A new MAC will introduce a new access method.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Fri, 1 Apr 2016 19:17:59 +0000 (12:17 -0700)]
ixgbe: Add definitions for x550em_a 10G MAC
Add definitions for a x550em_a 10G MAC device with a native SFP
interface.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Mon, 21 Mar 2016 18:21:31 +0000 (11:21 -0700)]
ixgbe: Add support for single-port X550 device
Add support for a single-port X550 device.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Alexander Duyck [Mon, 7 Mar 2016 17:30:09 +0000 (09:30 -0800)]
ixgbe/ixgbevf: Add support for bulk free in Tx cleanup & cleanup boolean logic
This patch enables bulk free in Tx cleanup for ixgbevf and cleans up the
boolean logic in the polling routines for ixgbe and ixgbevf in the hopes of
avoiding any mix-ups similar to what occurred with i40e and i40evf.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Mon, 14 Mar 2016 18:06:02 +0000 (11:06 -0700)]
ixgbe: Take manageability semaphore for firmware commands
We need to take the manageability semaphore when issuing firmware
commands to avoid problems. With this in place, the semaphore is
no longer taken in the ixgbe_set_fw_drv_ver_generic function, since
it will now always be taken by the ixgbe_host_interface_command
function.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Mon, 14 Mar 2016 18:05:57 +0000 (11:05 -0700)]
ixgbe: Clean up interface for firmware commands
Clean up the interface for issuing firmware commands to use a
void * instead of a u32 *. This eliminates a number of casts.
Also clean up ixgbe_host_interface_command in a few other ways,
eliminating comparisons with 0, redundant parens and minor
formatting issues.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Mon, 14 Mar 2016 18:05:51 +0000 (11:05 -0700)]
ixgbe: Correct length check for round up
The function ixgbe_host_interface_command actually uses a multiple
of word sized buffer to do its business, but only checks against
the actual length passed in. This means that on read operations it
could be possible to modify locations beyond the length passed in.
Change the check to round up in the same way, just to avoid any
possible hazard.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Mon, 14 Mar 2016 18:05:46 +0000 (11:05 -0700)]
ixgbe: Change the lan_id and func fields to a u8 to avoid casts
Since the lan_id and func fields only ever hold small values, make
them u8 to avoid casts used to silence warnings.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Mark Rustad [Mon, 14 Mar 2016 18:05:40 +0000 (11:05 -0700)]
ixgbe: Delete some unused register definitions
I noticed the SRAMREL registers are not referenced for any device,
so delete the definitions.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
I forgot to add inline to lockdep_sock_is_held, so it generated all
kinds of build warnings if not build with lockdep support.
Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 7 Apr 2016 21:00:14 +0000 (17:00 -0400)]
Merge branch 'tipc-next'
Jon Maloy says:
====================
tipc: some small fixes
When fix a minor buffer leak, and ensure that bearers filter packets
correctly while they are being shut down.
v2: Corrected typos in commit #3, as per feedback from S. Shtylyov
v3: Removed commit #3 from the series. Improved version will be
re-submitted later.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Paul Maloy [Thu, 7 Apr 2016 14:09:14 +0000 (10:09 -0400)]
tipc: stricter filtering of packets in bearer layer
Resetting a bearer/interface, with the consequence of resetting all its
pertaining links, is not an atomic action. This becomes particularly
evident in very large clusters, where a lot of traffic may happen on the
remaining links while we are busy shutting them down. In extreme cases,
we may even see links being re-created and re-established before we are
finished with the job.
To solve this, we now introduce a solution where we temporarily detach
the bearer from the interface when the bearer is reset. This inhibits
all packet reception, while sending still is possible. For the latter,
we use the fact that the device's user pointer now is zero to filter out
which packets can be sent during this situation; i.e., outgoing RESET
messages only. This filtering serves to speed up the neighbors'
detection of the loss event, and saves us from unnecessary probing.
Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Paul Maloy [Thu, 7 Apr 2016 14:09:13 +0000 (10:09 -0400)]
tipc: eliminate buffer leak in bearer layer
When enabling a bearer we create a 'neigbor discoverer' instance by
calling the function tipc_disc_create() before the bearer is actually
registered in the list of enabled bearers. Because of this, the very
first discovery broadcast message, created by the mentioned function,
is lost, since it cannot find any valid bearer to use. Furthermore,
the used send function, tipc_bearer_xmit_skb() does not free the given
buffer when it cannot find a bearer, resulting in the leak of exactly
one send buffer each time a bearer is enabled.
This commit fixes this problem by introducing two changes:
1) Instead of attemting to send the discovery message directly, we let
tipc_disc_create() return the discovery buffer to the calling
function, tipc_enable_bearer(), so that the latter can send it
when the enabling sequence is finished.
2) In tipc_bearer_xmit_skb(), as well as in the two other transmit
functions at the bearer layer, we now free the indicated buffer or
buffer chain when a valid bearer cannot be found.
Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 7 Apr 2016 20:53:37 +0000 (16:53 -0400)]
Merge branch 'gro-in-udp'
Tom Herbert says:
====================
udp: GRO in UDP sockets
This patch set adds GRO functions (gro_receive and gro_complete) to UDP
sockets and removes udp_offload infrastructure.
Add GRO functions (gro_receive and gro_complete) to UDP sockets. In
udp_gro_receive and udp_gro_complete a socket lookup is done instead of
looking up the port number in udp_offloads. If a socket is found and
there are GRO functions for it then those are called. This feature
allows binding GRO functions to more than just a port number.
Eventually, we will be able to use this technique to allow application
defined GRO for an application protocol by attaching BPF porgrams to UDP
sockets for doing GRO.
In order to implement these functions, we added exported
udp6_lib_lookup_skb and udp4_lib_lookup_skb functions in ipv4/udp.c and
ipv6/udp.c. Also, inet_iif and references to skb_dst() were changed to
check that dst is set in skbuf before derefencing. In the GRO path there
is now a UDP socket lookup performed before dst is set, to the get the
device in that case we simply use skb->dev.
Tested:
Ran various combinations of VXLAN and GUE TCP_STREAM and TCP_RR tests.
Did not see any material regression.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
projects / linux-beck.git / log