platform/kernel/linux-rpi3.git
6 years agonet: stmmac: Allow debug prints of frame_len/COE
Florian Fainelli [Sat, 30 Dec 2017 03:56:33 +0000 (19:56 -0800)]
net: stmmac: Allow debug prints of frame_len/COE

There is no reason not to allow printing the frame_len/COE value and put
that under a check for ETH_FRAME_LEN, drop it so we can see what the
descriptor reports.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: stmmac: Pad ring number with zeroes in display_ring()
Florian Fainelli [Sat, 30 Dec 2017 03:56:32 +0000 (19:56 -0800)]
net: stmmac: Pad ring number with zeroes in display_ring()

Make the printing of the ring number consistent and properly aligned by
padding the ring number with up to 3 zeroes, which covers the maximum
ring size. This makes it a lot easier to see outliers in debug prints.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: Fix dsa_legacy_register() return value
Florian Fainelli [Fri, 29 Dec 2017 19:05:45 +0000 (11:05 -0800)]
net: dsa: Fix dsa_legacy_register() return value

We need to make the dsa_legacy_register() stub return 0 in order for
dsa_init_module() to successfully register and continue registering the
ETH_P_XDSA packet handler.

Fixes: 2a93c1a3651f ("net: dsa: Allow compiling out legacy support")
Reported-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'further-sfp-phylink-updates'
David S. Miller [Wed, 3 Jan 2018 02:45:32 +0000 (21:45 -0500)]
Merge branch 'further-sfp-phylink-updates'

Russell King says:

====================
further sfp/phylink updates

This series:
- cleans up printing of module information
- improves the transceiver capability decoding, getting rid of the
  guessing by connector type, improves direct-attach cable support
  and adds support for 1G Base-PX and Base-BX10 modules.
- cleans up phylink_sfp_module_insert()
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agophylink: remove 'mode' variable from phylink_sfp_module_insert()
Russell King [Fri, 29 Dec 2017 12:15:33 +0000 (12:15 +0000)]
phylink: remove 'mode' variable from phylink_sfp_module_insert()

'mode' is actually constant through phylink_sfp_module_insert(), so
remove it and replace it with the enumerated constant.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosfp: improve support for direct-attach copper cables
Russell King [Fri, 29 Dec 2017 12:15:28 +0000 (12:15 +0000)]
sfp: improve support for direct-attach copper cables

Improve the support for direct-attach copper so that we avoid kernel
warning messages, and report the appropriate PORT_DA type to userspace.
Direct Attach cables can use a number of protocols depending on their
range of speeds.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosfp: add support for 1000Base-PX and 1000Base-BX10
Russell King [Fri, 29 Dec 2017 12:15:23 +0000 (12:15 +0000)]
sfp: add support for 1000Base-PX and 1000Base-BX10

Add support for decoding the transceiver information for 1000Base-PX and
1000Base-BX10.  These use 1000BASE-X protocol.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosfp: don't guess support from connector type
Russell King [Fri, 29 Dec 2017 12:15:17 +0000 (12:15 +0000)]
sfp: don't guess support from connector type

Don't try to guess the support mask from the connector type - this is
mostly irrelevant to the speeds that the transceiver supports.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosfp: use precision to print non-null terminated strings
Russell King [Fri, 29 Dec 2017 12:15:12 +0000 (12:15 +0000)]
sfp: use precision to print non-null terminated strings

Rather than memcpy()'ing the strings and null terminate them, printf
allows non-NULL terminated strings provided the precision is not more
than the size of the buffer.  Use this form to print the basic module
information rather than copying and terminating the strings.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'marvell10g-phy-updates'
David S. Miller [Tue, 2 Jan 2018 20:00:50 +0000 (15:00 -0500)]
Merge branch 'marvell10g-phy-updates'

Russell King says:

====================
marvell10g updates

This series:
- adds MDI/MDIX reporting
- adds support for 10/100Mbps half-duplex link modes
- adds a comment describing the setup on VF610 ZII boards (where
  the phy interface mode doesn't change.)
- cleans up the phy interace mode switching
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: marvell10g: add support for half duplex 100M and 10M
Russell King [Fri, 29 Dec 2017 12:46:43 +0000 (12:46 +0000)]
net: phy: marvell10g: add support for half duplex 100M and 10M

Add support for half-duplex 100M and 10M copper connections by parsing
the advertisment results rather than trying to decode the negotiated
speed from one of the PHYs "vendor" registers.  This allows us to
decode the duplex as well, which means we can support half-duplex mode
for the slower speeds.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: add helper to convert negotiation result to phy settings
Russell King [Fri, 29 Dec 2017 12:46:38 +0000 (12:46 +0000)]
net: phy: add helper to convert negotiation result to phy settings

Add a helper to convert the result of the autonegotiation advertisment
into the PHYs speed and duplex settings.  If the result is full duplex,
also extract the pause mode settings from the link partner advertisment.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: marvell10g: clean up interface mode switching
Russell King [Fri, 29 Dec 2017 12:46:32 +0000 (12:46 +0000)]
net: phy: marvell10g: clean up interface mode switching

Centralise the PHY interface mode switching, rather than having it in
two places.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: marvell10g: add MDI swap reporting
Russell King [Fri, 29 Dec 2017 12:46:27 +0000 (12:46 +0000)]
net: phy: marvell10g: add MDI swap reporting

Add reporting of the MDI swap to the Marvell 10G PHY driver by providing
a generic implementation for the standard 10GBASE-T pair swap register
and polarity register.  We also support reading the MDI swap status for
1G and below from a PCS register.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: marvell10g: update header comments
Russell King [Fri, 29 Dec 2017 12:46:22 +0000 (12:46 +0000)]
net: phy: marvell10g: update header comments

Update header comments to indicate the newly found behaviour with XAUI
interfaces.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns: add ACPI mode support for ethtool -p
Jian Shen [Fri, 29 Dec 2017 09:11:11 +0000 (17:11 +0800)]
net: hns: add ACPI mode support for ethtool -p

The locate operation interface of fiber port can only
work with DT mode. Add a new interface to control the
locate led for ACPI mode.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Tested-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: Check alignment constraint for T6
Ganesh Goudar [Fri, 29 Dec 2017 07:18:04 +0000 (12:48 +0530)]
cxgb4: Check alignment constraint for T6

Update the check for setting  IPV4 filters and align filter_id
to multiple of 2, only for IPv6 filters in case of T6.

Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'ena-next'
David S. Miller [Tue, 2 Jan 2018 19:35:12 +0000 (14:35 -0500)]
Merge branch 'ena-next'

Netanel Belgazal says:

====================
update ENA driver to version 1.5.0

This patchset contains two changes:
* Add a robust mechanism for detection of stuck Rx/Tx rings due to
  missed or misrouted MSI-X
* Increase the driver version to 1.5.0
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ena: increase ena driver version to 1.5.0
Netanel Belgazal [Thu, 28 Dec 2017 21:31:31 +0000 (21:31 +0000)]
net: ena: increase ena driver version to 1.5.0

Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ena: add detection and recovery mechanism for handling missed/misrouted MSI-X
Netanel Belgazal [Thu, 28 Dec 2017 21:31:30 +0000 (21:31 +0000)]
net: ena: add detection and recovery mechanism for handling missed/misrouted MSI-X

A mechanism for detection of stuck Rx/Tx rings due to missed or
misrouted interrupts.
Check if there are unhandled completion descriptors before the first
MSI-X interrupt arrived.
The check is per queue and per interrupt vector.
Once such condition is detected, driver and device reset is scheduled.

Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'tcp-sctp-dccp-Replace-jprobe-usage-with-trace-events'
David S. Miller [Tue, 2 Jan 2018 19:28:07 +0000 (14:28 -0500)]
Merge branch 'tcp-sctp-dccp-Replace-jprobe-usage-with-trace-events'

Masami Hiramatsu says:

====================
net: tcp: sctp: dccp: Replace jprobe usage with trace events

This series is v7 of the replacement of jprobe usage with trace
events. This version fixes net/dccp/trace.h to avoid sparse
warning. Since the TP_STORE_ADDR_PORTS macro can be shared
with trace/events/tcp.h, it also introduce a new common header
file and move the definition of that macro.

Previous version is here;
 https://lkml.org/lkml/2017/12/28/7

Changes from v6:
  [5/6]: Avoid preprocessor directives in tracepoint macro args
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dccp: Remove dccpprobe module
Masami Hiramatsu [Fri, 29 Dec 2017 02:48:25 +0000 (11:48 +0900)]
net: dccp: Remove dccpprobe module

Remove DCCP probe module since jprobe has been deprecated.
That function is now replaced by dccp/dccp_probe trace-event.
You can use it via ftrace or perftools.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dccp: Add DCCP sendmsg trace event
Masami Hiramatsu [Fri, 29 Dec 2017 02:47:55 +0000 (11:47 +0900)]
net: dccp: Add DCCP sendmsg trace event

Add DCCP sendmsg trace event (dccp/dccp_probe) for
replacing dccpprobe. User can trace this event via
ftrace or perftools.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sctp: Remove debug SCTP probe module
Masami Hiramatsu [Fri, 29 Dec 2017 02:47:20 +0000 (11:47 +0900)]
net: sctp: Remove debug SCTP probe module

Remove SCTP probe module since jprobe has been deprecated.
That function is now replaced by sctp/sctp_probe and
sctp/sctp_probe_path trace-events.
You can use it via ftrace or perftools.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sctp: Add SCTP ACK tracking trace event
Masami Hiramatsu [Fri, 29 Dec 2017 02:46:51 +0000 (11:46 +0900)]
net: sctp: Add SCTP ACK tracking trace event

Add SCTP ACK tracking trace event to trace the changes of SCTP
association state in response to incoming packets.
It is used for debugging SCTP congestion control algorithms,
and will replace sctp_probe module.

Note that this event a bit tricky. Since this consists of 2
events (sctp_probe and sctp_probe_path) so you have to enable
both events as below.

  # cd /sys/kernel/debug/tracing
  # echo 1 > events/sctp/sctp_probe/enable
  # echo 1 > events/sctp/sctp_probe_path/enable

Or, you can enable all the events under sctp.

  # echo 1 > events/sctp/enable

Since sctp_probe_path event is always invoked from sctp_probe
event, you can not see any output if you only enable
sctp_probe_path.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: tcp: Remove TCP probe module
Masami Hiramatsu [Fri, 29 Dec 2017 02:46:21 +0000 (11:46 +0900)]
net: tcp: Remove TCP probe module

Remove TCP probe module since jprobe has been deprecated.
That function is now replaced by tcp/tcp_probe trace-event.
You can use it via ftrace or perftools.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: tcp: Add trace events for TCP congestion window tracing
Masami Hiramatsu [Fri, 29 Dec 2017 02:45:51 +0000 (11:45 +0900)]
net: tcp: Add trace events for TCP congestion window tracing

This adds an event to trace TCP stat variables with
slightly intrusive trace-event. This uses ftrace/perf
event log buffer to trace those state, no needs to
prepare own ring-buffer, nor custom user apps.

User can use ftrace to trace this event as below;

  # cd /sys/kernel/debug/tracing
  # echo 1 > events/tcp/tcp_probe/enable
  (run workloads)
  # cat trace

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'qed-Advance-to-FW-8.33.1.0'
David S. Miller [Tue, 2 Jan 2018 18:59:17 +0000 (13:59 -0500)]
Merge branch 'qed-Advance-to-FW-8.33.1.0'

Tomer Tayar says:

====================
qed*: Advance to FW 8.33.1.0

This series advances all qed* drivers to use firmware 8.33.1.0 which brings
new capabilities and initial support of new HW. The changes are mostly in
qed, and include changes in the FW interface files, as well as updating the
FW initialization and debug collection code. The protocol drivers have
minor functional changes for this firmware.

Patch 1 Rearranges and refactors the FW interface files in preparation of
the new FW (no functional change).
Patch 2 Prepares the code for support of new HW (no functional change).
Patch 3 Actual utilization of the new FW.
Patch 4 Advances drivers' version.

v3->v4:
Fix a compilation issue which was reported by krobot (dependency on CRC8).

v2->v3:
Resend the series with a fixed title in the cover letter.

v1->v2:
- Break the previous single patch into several patches.
- Fix compilation issues which were reported by krobot.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed*: Advance drivers' version to 8.33.0.20
Tomer Tayar [Wed, 27 Dec 2017 17:30:08 +0000 (19:30 +0200)]
qed*: Advance drivers' version to 8.33.0.20

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Chad Dupuis <Chad.Dupuis@cavium.com>
Signed-off-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed*: Utilize FW 8.33.1.0
Tomer Tayar [Wed, 27 Dec 2017 17:30:07 +0000 (19:30 +0200)]
qed*: Utilize FW 8.33.1.0

Advance the qed* drivers to use firmware 8.33.1.0:
Modify core driver (qed) to utilize the new FW and initialize the device
with it. This is the lion's share of the patch, and includes changes to FW
interface files, device initialization flows, FW interaction flows, and
debug collection flows.
Modify Ethernet driver (qede) to make use of new FW in fastpath.
Modify RoCE/iWARP driver (qedr) to make use of new FW in fastpath.
Modify FCoE driver (qedf) to make use of new FW in fastpath.
Modify iSCSI driver (qedi) to make use of new FW in fastpath.

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Bason <Yuval.Bason@cavium.com>
Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Manish Chopra <Manish.Chopra@cavium.com>
Signed-off-by: Chad Dupuis <Chad.Dupuis@cavium.com>
Signed-off-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed*: HSI renaming for different types of HW
Tomer Tayar [Wed, 27 Dec 2017 17:30:06 +0000 (19:30 +0200)]
qed*: HSI renaming for different types of HW

This patch renames defines and structures in the FW HSI files to allow a
distinction between different types of HW.

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Chad Dupuis <Chad.Dupuis@cavium.com>
Signed-off-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed*: Refactoring and rearranging FW API with no functional impact
Tomer Tayar [Wed, 27 Dec 2017 17:30:05 +0000 (19:30 +0200)]
qed*: Refactoring and rearranging FW API with no functional impact

This patch refactors and reorders the FW API files in preparation of
upgrading the code to support new FW.

- Make use of the BIT macro in appropriate places.
- Whitespace changes to align values and code blocks.
- Comments are updated (spelling mistakes, removed if not clear).
- Group together code blocks which are related or deal with similar
 matters.

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoinet_diag: Add equal-operator for ports
Kristian Evensen [Wed, 27 Dec 2017 17:27:58 +0000 (18:27 +0100)]
inet_diag: Add equal-operator for ports

inet_diag currently provides less/greater than or equal operators for
comparing ports when filtering sockets. An equal comparison can be
performed by combining the two existing operators, or a user can for
example request a port range and then do the final filtering in
userspace. However, these approaches both have drawbacks. Implementing
equal using LE/GE causes the size and complexity of a filter to grow
quickly as the number of ports increase, while it on busy machines would
be great if the kernel only returns information about relevant sockets.

This patch introduces source and destination port equal operators.
INET_DIAG_BC_S_EQ is used to match a source port, INET_DIAG_BC_D_EQ a
destination port, and usage is the same as for the existing port
operators.  I.e., the port to match is stored in the no-member of the
next inet_diag_bc_op-struct in the filter.

Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 's390-next'
David S. Miller [Tue, 2 Jan 2018 18:52:23 +0000 (13:52 -0500)]
Merge branch 's390-next'

Julian Wiedmann says:

====================
s390/qeth: updates 2017-12-27

please apply some post-christmas leftovers for 4.16.
Two patches to improve IP address management on L3, and two that add
support to auto-config the transport mode on z/VM VNICs.
Note that one patch in the series touches arch/s390 (acked by Martin).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agos390/qeth: support early setup for z/VM NICs
Julian Wiedmann [Wed, 27 Dec 2017 16:44:31 +0000 (17:44 +0100)]
s390/qeth: support early setup for z/VM NICs

The transport mode that a z/VM NIC is configured in, must match the
hypervisor-internal network which the NIC is coupled to.

To get this right automatically, have qeth issue a diag26c hypervisor call
that provides all sorts of information for a specific VNIC.
With z/VM update VM65918, this also includes the VNIC's required
transport mode.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agos390/diag: add diag26c support for VNIC info
Julian Wiedmann [Wed, 27 Dec 2017 16:44:30 +0000 (17:44 +0100)]
s390/diag: add diag26c support for VNIC info

With subcode 0x24, diag26c returns all sorts of VNIC-related information.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agos390/qeth: use common helper to display rxip/vipa
Julian Wiedmann [Wed, 27 Dec 2017 16:44:29 +0000 (17:44 +0100)]
s390/qeth: use common helper to display rxip/vipa

By parameterising the address type, we need just one helper that walks
the IP table and builds up the response string.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agos390/qeth: improve error reporting on IP add/removal
Julian Wiedmann [Wed, 27 Dec 2017 16:44:28 +0000 (17:44 +0100)]
s390/qeth: improve error reporting on IP add/removal

When adding & removing IP entries for rxip/vipa/ipato/hsuid, forward any
resulting errors back to the sysfs-level caller.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoopenvswitch: drop unneeded newline
Julia Lawall [Wed, 27 Dec 2017 14:51:38 +0000 (15:51 +0100)]
openvswitch: drop unneeded newline

OVS_NLERR prints a newline at the end of the message string, so the
message string does not need to include a newline explicitly.  Done
using Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dccp: drop unneeded newline
Julia Lawall [Wed, 27 Dec 2017 14:51:36 +0000 (15:51 +0100)]
net: dccp: drop unneeded newline

DCCP_CRIT prints some other text and then a newline after the message
string, so the message string does not need to include a newline
explicitly.  Done using Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: fix skb leak in dev_requeue_skb()
Wei Yongjun [Wed, 27 Dec 2017 09:05:52 +0000 (17:05 +0800)]
net: sched: fix skb leak in dev_requeue_skb()

When dev_requeue_skb() is called with bulked skb list, only the
first skb of the list will be requeued to qdisc layer, and leak
the others without free them.

TCP is broken due to skb leak since no free skb will be considered
as still in the host queue and never be retransmitted. This happend
when dev_requeue_skb() called from qdisc_restart().
  qdisc_restart
  |-- dequeue_skb
  |-- sch_direct_xmit()
      |-- dev_requeue_skb() <-- skb may bluked

Fix dev_requeue_skb() to requeue the full bluked list. Also change
to use __skb_queue_tail() in __dev_requeue_skb() to avoid skb out
of order.

Fixes: a53851e2c321 ("net: sched: explicit locking in gso_cpu fallback")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: use CLIP with LIP6 on T6 for TCAM filters
Ganesh Goudar [Wed, 27 Dec 2017 07:42:57 +0000 (13:12 +0530)]
cxgb4: use CLIP with LIP6 on T6 for TCAM filters

On T6, LIP compression is always enabled for IPv6 and uncompressed
IPv6 for LIP is not supported. So, for IPv6 TCAM filters on T6,
add LIP6 to CLIP on filter creation, and release the same on filter
deletion.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoselftests: rtnetlink: add erspan and ip6erspan
William Tu [Tue, 26 Dec 2017 19:10:07 +0000 (11:10 -0800)]
selftests: rtnetlink: add erspan and ip6erspan

Add test cases for ipv4, ipv6 erspan, v1 and v2 native mode
and external (collect metadata) mode.

Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoforcedeth: optimize the rx with likely
Zhu Yanjun [Tue, 26 Dec 2017 06:22:50 +0000 (01:22 -0500)]
forcedeth: optimize the rx with likely

In the rx fastpath, the function netdev_alloc_skb rarely fails.
Therefore, a likely() optimization is added to this error check
conditional.

CC: Srinivas Eeda <srinivas.eeda@oracle.com>
CC: Joe Jin <joe.jin@oracle.com>
CC: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoselftests/net: fix bugs in address and port initialization
Sowmini Varadhan [Mon, 25 Dec 2017 22:43:04 +0000 (14:43 -0800)]
selftests/net: fix bugs in address and port initialization

Address/port initialization should work correctly regardless
of the order in which command line arguments are supplied,
E.g, cfg_port should be used to connect to the remote host
even if it is processed after -D, src/dst address initialization
should not require that [-4|-6] be specified before
the -S or -D args, receiver should be able to bind to *.<cfg_port>

Achieve this by making sure that the address/port structures
are initialized after all command line options are parsed.

Store cfg_port in host-byte order, and use htons()
to set up the sin_port/sin6_port before bind/connect,
so that the network system calls get the correct values
in network-byte order.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'net-sched-Fix-RED-qdisc-offload-flag'
David S. Miller [Tue, 2 Jan 2018 18:17:46 +0000 (13:17 -0500)]
Merge branch 'net-sched-Fix-RED-qdisc-offload-flag'

Nogah Frankel says:

====================
net: sched: Fix RED qdisc offload flag

Replacing the RED offload flag (TC_RED_OFFLOADED) with the generic one
(TCQ_F_OFFLOADED) deleted some of the logic behind it. This patchset fixes
this problem.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: Move offload check till after dump call
Nogah Frankel [Mon, 25 Dec 2017 08:51:42 +0000 (10:51 +0200)]
net: sched: Move offload check till after dump call

Move the check of the offload state to after the qdisc dump action was
called, so the qdisc could update it if it was changed.

Fixes: 7a4fa29106d9 ("net: sched: Add TCA_HW_OFFLOAD")
Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Yuval Mintz <yuvalm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet_sch: red: Fix the new offload indication
Nogah Frankel [Mon, 25 Dec 2017 08:51:41 +0000 (10:51 +0200)]
net_sch: red: Fix the new offload indication

Update the offload flag, TCQ_F_OFFLOADED, in each dump call (and ignore
the offloading function return value in relation to this flag).
This is done because a qdisc is being initialized, and therefore offloaded
before being grafted. Since the ability of the driver to offload the qdisc
depends on its location, a qdisc can be offloaded and un-offloaded by graft
calls, that doesn't effect the qdisc itself.

Fixes: 428a68af3a7c ("net: sched: Move to new offload indication in RED"
Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Yuval Mintz <yuvalm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosky2: Replace mdelay with msleep in sky2_vpd_wait
Jia-Ju Bai [Sun, 24 Dec 2017 03:54:33 +0000 (11:54 +0800)]
sky2: Replace mdelay with msleep in sky2_vpd_wait

sky2_vpd_wait is not called in an interrupt handler nor holding a spinlock.
The function mdelay in it can be replaced with msleep, to reduce busy wait.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ptr_ring: otherwise safe empty checks can overrun array bounds
John Fastabend [Thu, 28 Dec 2017 03:50:25 +0000 (19:50 -0800)]
net: ptr_ring: otherwise safe empty checks can overrun array bounds

When running consumer and/or producer operations and empty checks in
parallel its possible to have the empty check run past the end of the
array. The scenario occurs when an empty check is run while
__ptr_ring_discard_one() is in progress. Specifically after the
consumer_head is incremented but before (consumer_head >= ring_size)
check is made and the consumer head is zeroe'd.

To resolve this, without having to rework how consumer/producer ops
work on the array, simply add an extra dummy slot to the end of the
array. Even if we did a rework to avoid the extra slot it looks
like the normal case checks would suffer some so best to just
allocate an extra pointer.

Reported-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Fixes: c5ad119fb6c09 ("net: sched: pfifo_fast use skb_array")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Fri, 29 Dec 2017 20:14:27 +0000 (15:14 -0500)]
Merge git://git./linux/kernel/git/davem/net

net/ipv6/ip6_gre.c is a case of parallel adds.

include/trace/events/tcp.h is a little bit more tricky.  The removal
of in-trace-macro ifdefs in 'net' paralleled with moving
show_tcp_state_name and friends over to include/trace/events/sock.h
in 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 29 Dec 2017 07:20:21 +0000 (23:20 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) IPv6 gre tunnels end up with different default features enabled
    depending upon whether netlink or ioctls are used to bring them up.
    Fix from Alexey Kodanev.

 2) Fix read past end of user control message in RDS< from Avinash
    Repaka.

 3) Missing RCU barrier in mini qdisc code, from Cong Wang.

 4) Missing policy put when reusing per-cpu route entries, from Florian
    Westphal.

 5) Handle nested PCI errors properly in bnx2x driver, from Guilherme G.
    Piccoli.

 6) Run nested transport mode IPSEC packets via tasklet, from Herbert
    Xu.

 7) Fix handling poll() for stream sockets in tipc, from Parthasarathy
    Bhuvaragan.

 8) Fix two stack-out-of-bounds issues in IPSEC, from Steffen Klassert.

 9) Another zerocopy ubuf handling fix, from Willem de Bruijn.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (33 commits)
  strparser: Call sock_owned_by_user_nocheck
  sock: Add sock_owned_by_user_nocheck
  skbuff: in skb_copy_ubufs unclone before releasing zerocopy
  tipc: fix hanging poll() for stream sockets
  sctp: Replace use of sockets_allocated with specified macro.
  bnx2x: Improve reliability in case of nested PCI errors
  tg3: Enable PHY reset in MTU change path for 5720
  tg3: Add workaround to restrict 5762 MRRS to 2048
  tg3: Update copyright
  net: fec: unmap the xmit buffer that are not transferred by DMA
  tipc: fix tipc_mon_delete() oops in tipc_enable_bearer() error path
  tipc: error path leak fixes in tipc_enable_bearer()
  RDS: Check cmsg_len before dereferencing CMSG_DATA
  tcp: Avoid preprocessor directives in tracepoint macro args
  tipc: fix memory leak of group member when peer node is lost
  net: sched: fix possible null pointer deref in tcf_block_put
  tipc: base group replicast ack counter on number of actual receivers
  net_sched: fix a missing rcu barrier in mini_qdisc_pair_swap()
  net: phy: micrel: ksz9031: reconfigure autoneg after phy autoneg workaround
  ip6_gre: fix device features for ioctl setup
  ...

6 years agoMerge tag 'drm-fixes-for-v4.15-rc6' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 29 Dec 2017 07:16:24 +0000 (23:16 -0800)]
Merge tag 'drm-fixes-for-v4.15-rc6' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "nouveau and i915 regression fixes"

* tag 'drm-fixes-for-v4.15-rc6' of git://people.freedesktop.org/~airlied/linux:
  drm/nouveau: fix race when adding delayed work items
  i915: Reject CCS modifiers for pipe C on Geminilake
  drm/i915/gvt: Fix pipe A enable as default for vgpu

6 years agoMerge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 29 Dec 2017 07:14:47 +0000 (23:14 -0800)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk fix from Stephen Boyd:
 "One more fix for the runtime PM clk patches. We're calling a runtime
  PM API that may schedule from somewhere that we can't do that. We
  change to the async version of pm_runtime_put() to fix it"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: use atomic runtime pm api in clk_core_is_enabled

6 years agoMerge tag 'led_fixes_for_4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 29 Dec 2017 07:09:45 +0000 (23:09 -0800)]
Merge tag 'led_fixes_for_4.15-rc6' of git://git./linux/kernel/git/j.anaszewski/linux-leds

Pull LED fix from Jacek Anaszewski:
 "A single LED fix for brightness setting when delay_off is 0"

* tag 'led_fixes_for_4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  led: core: Fix brightness setting when setting delay_off=0

6 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Fri, 29 Dec 2017 07:06:01 +0000 (23:06 -0800)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "This is the next batch of for-rc patches from RDMA. It includes the
  fix for the ipoib regression I mentioned last time, and the result of
  a fairly major debugging effort to get iser working reliably on cxgb4
  hardware - it turns out the cxgb4 driver was not handling QP error
  flushing properly causing iser to fail.

   - cxgb4 fix for an iser testing failure as debugged by Steve and
     Sagi. The problem was a driver bug in the handling of shutting down
     a QP.

   - Various vmw_pvrdma fixes for bogus WARN_ON, missed resource free on
     error unwind and a use after free bug

   - Improper congestion counter values on mlx5 when link aggregation is
     enabled

   - ipoib lockdep regression introduced in this merge window

   - hfi1 regression supporting the device in a VM introduced in a
     recent patch

   - Typo that breaks future uAPI compatibility in the verbs core

   - More SELinux related oops fixing

   - Fix an oops during error unwind in mlx5"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  IB/mlx5: Fix mlx5_ib_alloc_mr error flow
  IB/core: Verify that QP is security enabled in create and destroy
  IB/uverbs: Fix command checking as part of ib_uverbs_ex_modify_qp()
  IB/mlx5: Serialize access to the VMA list
  IB/hfi: Only read capability registers if the capability exists
  IB/ipoib: Fix lockdep issue found on ipoib_ib_dev_heavy_flush
  IB/mlx5: Fix congestion counters in LAG mode
  RDMA/vmw_pvrdma: Avoid use after free due to QP/CQ/SRQ destroy
  RDMA/vmw_pvrdma: Use refcount_dec_and_test to avoid warning
  RDMA/vmw_pvrdma: Call ib_umem_release on destroy QP path
  iw_cxgb4: when flushing, complete all wrs in a chain
  iw_cxgb4: reflect the original WR opcode in drain cqes
  iw_cxgb4: Only validate the MSN for successful completions

6 years agoMerge tag 'mlx5-shared-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mella...
David S. Miller [Fri, 29 Dec 2017 00:32:59 +0000 (19:32 -0500)]
Merge tag 'mlx5-shared-4.16-1' of git://git./linux/kernel/git/mellanox/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 E-Switch updates 2017-12-19

This series includes updates for mlx5 E-Switch infrastructures,
to be merged into net-next and rdma-next trees.

Mark's patches provide E-Switch refactoring that generalize the mlx5
E-Switch vf representors interfaces and data structures. The serious is
mainly focused on moving ethernet (netdev) specific representors logic out
of E-Switch (eswitch.c) into mlx5e representor module (en_rep.c), which
provides better separation and allows future support for other types of vf
representors (e.g. RDMA).

Gal's patches at the end of this serious, provide a simple syntax fix and
two other patches that handles vport ingress/egress ACL steering name
spaces to be aligned with the Firmware/Hardware specs.

V1->V2:
 - Addressed coding style comments in patches #1 and #7
 - The series is still based on rc4, as now I see net-next is also @rc4.

V2->V3:
 - Fixed compilation warning, reported by Dave.

Please pull and let me know if there's any problem.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx5: Separate ingress/egress namespaces for each vport
Gal Pressman [Tue, 28 Nov 2017 09:58:51 +0000 (11:58 +0200)]
net/mlx5: Separate ingress/egress namespaces for each vport

Each vport has its own root flow table for the ACL flow tables and root
flow table is per namespace, therefore we should create a namespace for
each vport.

Fixes: efdc810ba39d ("net/mlx5: Flow steering, Add vport ACL support")
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: Fix ingress/egress naming mistake
Gal Pressman [Wed, 29 Nov 2017 10:08:15 +0000 (12:08 +0200)]
net/mlx5: Fix ingress/egress naming mistake

The functions names do not represent their actions, switch the mistaken
ingress/egress naming.

Fixes: fba53f7b5719 ("net/mlx5: Introduce mlx5_flow_steering structure")
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5e: E-Switch, Use the name of static array instead of its address
Gal Pressman [Thu, 26 Oct 2017 13:11:25 +0000 (16:11 +0300)]
net/mlx5e: E-Switch, Use the name of static array instead of its address

Using the address of a static array is the same as using its name (in
this specific use-case), but it's confusing and makes the code less
readable.

Fixes: 1bd27b11c1df ("net/mlx5: Introduce E-switch QoS management")
Fixes: bd77bf1cb595 ("net/mlx5: Add SRIOV VF max rate configuration support")
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5e: E-Switch, Move send-to-vport rule struct to en_rep
Mark Bloch [Thu, 7 Dec 2017 21:39:52 +0000 (21:39 +0000)]
net/mlx5e: E-Switch, Move send-to-vport rule struct to en_rep

Move struct mlx5_esw_sq which keeps send-to-vport rule to from the eswitch
code to mlx5e and rename it to better reflect where it belongs

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: E-Switch, Create generic header struct to be used by representors
Mark Bloch [Thu, 7 Dec 2017 21:25:57 +0000 (21:25 +0000)]
net/mlx5: E-Switch, Create generic header struct to be used by representors

Now that we don't store type dependent data in struct mlx5_eswitch_rep
we can create a generic interface, and representor type.

struct mlx5_eswitch_rep will store an array of interfaces, each
interface is used by a different representor type.

Once we moved to a more generic interface, rdma driver representors can
be added and utilize the same mechanism as the Ethernet driver
representors use.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agoMerge branch 'strparser-Fix-lockdep-issue'
David S. Miller [Thu, 28 Dec 2017 19:28:23 +0000 (14:28 -0500)]
Merge branch 'strparser-Fix-lockdep-issue'

Tom Herbert says:

====================
strparser: Fix lockdep issue

When sock_owned_by_user returns true in strparser. Fix is to add and
call sock_owned_by_user_nocheck since the check for owned by user is
not an error condition in this case.
====================

Fixes: 43a0c6751a322847 ("strparser: Stream parser for messages")
Reported-by: syzbot <syzkaller@googlegroups.com>
Reported-and-tested-by: <syzbot+c91c53af67f9ebe599a337d2e70950366153b295@syzkaller.appspotmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agostrparser: Call sock_owned_by_user_nocheck
Tom Herbert [Thu, 28 Dec 2017 19:00:44 +0000 (11:00 -0800)]
strparser: Call sock_owned_by_user_nocheck

strparser wants to check socket ownership without producing any
warnings. As indicated by the comment in the code, it is permissible
for owned_by_user to return true.

Fixes: 43a0c6751a322847 ("strparser: Stream parser for messages")
Reported-by: syzbot <syzkaller@googlegroups.com>
Reported-and-tested-by: <syzbot+c91c53af67f9ebe599a337d2e70950366153b295@syzkaller.appspotmail.com>
Signed-off-by: Tom Herbert <tom@quantonium.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosock: Add sock_owned_by_user_nocheck
Tom Herbert [Thu, 28 Dec 2017 19:00:43 +0000 (11:00 -0800)]
sock: Add sock_owned_by_user_nocheck

This allows checking socket lock ownership with producing lockdep
warnings.

Signed-off-by: Tom Herbert <tom@quantonium.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoskbuff: in skb_copy_ubufs unclone before releasing zerocopy
Willem de Bruijn [Thu, 28 Dec 2017 17:38:13 +0000 (12:38 -0500)]
skbuff: in skb_copy_ubufs unclone before releasing zerocopy

skb_copy_ubufs must unclone before it is safe to modify its
skb_shared_info with skb_zcopy_clear.

Commit b90ddd568792 ("skbuff: skb_copy_ubufs must release uarg even
without user frags") ensures that all skbs release their zerocopy
state, even those without frags.

But I forgot an edge case where such an skb arrives that is cloned.

The stack does not build such packets. Vhost/tun skbs have their
frags orphaned before cloning. TCP skbs only attach zerocopy state
when a frag is added.

But if TCP packets can be trimmed or linearized, this might occur.
Tracing the code I found no instance so far (e.g., skb_linearize
ends up calling skb_zcopy_clear if !skb->data_len).

Still, it is non-obvious that no path exists. And it is fragile to
rely on this.

Fixes: b90ddd568792 ("skbuff: skb_copy_ubufs must release uarg even without user frags")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'mlx4-misc-for-4.16'
David S. Miller [Thu, 28 Dec 2017 17:24:06 +0000 (12:24 -0500)]
Merge branch 'mlx4-misc-for-4.16'

Tariq Toukan says:

====================
mlx4 misc for 4.16

This patchset contains misc cleanups and improvements
to the mlx4 Core and Eth drivers.

In patches 1 and 2 I reduce and reorder the branches in the RX csum flow.
In patch 3 I align the FMR unmapping flow with the device spec, to allow
  a remapping afterwards.
Patch 4 by Moni changes the default QoS settings so that a pause
  frame stops all traffic regardless of its prio.

Series generated against net-next commit:
836df24a7062 net: hns3: hns3_get_channels() can be static
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_en: Change default QoS settings
Moni Shoua [Thu, 28 Dec 2017 14:26:11 +0000 (16:26 +0200)]
net/mlx4_en: Change default QoS settings

Change the default mapping between TC and TCG as follows:

Prio     |             TC/TCG
         |      from             to
         |    (set by FW)      (set by SW)
---------+-----------------------------------
0        |      0/0              0/7
1        |      1/0              0/6
2        |      2/0              0/5
3        |      3/0              0/4
4        |      4/0              0/3
5        |      5/0              0/2
6        |      6/0              0/1
7        |      7/0              0/0

These new settings cause that a pause frame for any prio stops
traffic for all prios.

Fixes: 564c274c3df0 ("net/mlx4_en: DCB QoS support")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_core: Cleanup FMR unmapping flow
Tariq Toukan [Thu, 28 Dec 2017 14:26:10 +0000 (16:26 +0200)]
net/mlx4_core: Cleanup FMR unmapping flow

Remove redundant and not essential operations in fmr unmap/free.
According to device spec, in FMR unmap it is sufficient to set
ownership bit to SW. This allows remapping afterwards.

Fixes: 8ad11fb6b073 ("IB/mlx4: Implement FMRs")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_en: RX csum, reorder branches
Tariq Toukan [Thu, 28 Dec 2017 14:26:09 +0000 (16:26 +0200)]
net/mlx4_en: RX csum, reorder branches

Use early goto commands, and save else branches.
This uses less indentations and brackets, making the code
more readable.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_en: RX csum, remove redundant branches and checks
Tariq Toukan [Thu, 28 Dec 2017 14:26:08 +0000 (16:26 +0200)]
net/mlx4_en: RX csum, remove redundant branches and checks

Do not check IPv6 bit in cqe status if CONFIG_IPV6 is not enabled.
Function check_csum() is reached only with IPv4 or IPv6 set (if enabled),
if IPv6 is not set (or is not enabled) it is redundant to test the
IPv4 bit.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: don't set extack message in case the qdisc will be created
Jiri Pirko [Thu, 28 Dec 2017 15:52:10 +0000 (16:52 +0100)]
net: sched: don't set extack message in case the qdisc will be created

If the qdisc is not found here, it is going to be created. Therefore,
this is not an error path. Remove the extack message set and don't
confuse user with error message in case the qdisc was created
successfully.

Fixes: 09215598119e ("net: sched: sch_api: handle generic qdisc errors")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotipc: fix hanging poll() for stream sockets
Parthasarathy Bhuvaragan [Thu, 28 Dec 2017 11:03:06 +0000 (12:03 +0100)]
tipc: fix hanging poll() for stream sockets

In commit 42b531de17d2f6 ("tipc: Fix missing connection request
handling"), we replaced unconditional wakeup() with condtional
wakeup for clients with flags POLLIN | POLLRDNORM | POLLRDBAND.

This breaks the applications which do a connect followed by poll
with POLLOUT flag. These applications are not woken when the
connection is ESTABLISHED and hence sleep forever.

In this commit, we fix it by including the POLLOUT event for
sockets in TIPC_CONNECTING state.

Fixes: 42b531de17d2f6 ("tipc: Fix missing connection request handling")
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'AVE-ethernet'
David S. Miller [Thu, 28 Dec 2017 17:10:40 +0000 (12:10 -0500)]
Merge branch 'AVE-ethernet'

Kunihiko Hayashi says:

====================
net: add UniPhier AVE ethernet support

This series adds support for Socionext AVE ethernet controller implemented
on UniPhier SoCs. This driver supports RGMII/RMII modes.

v8: https://www.spinics.net/lists/netdev/msg474374.html

The PHY patch included in v1 has already separated in:
http://www.spinics.net/lists/netdev/msg454595.html

Changes since v8:
- move operators at the beginning of the line to the end of the previous line
- dt-bindings: add blank lines before mdio and phy subnodes

Changes since v7:
- dt-bindings: fix mdio subnode description

Changes since v6:
- sort the order of local variables from longest to shortest line
- fix ave_probe() which calls register_netdev() at the end of initialization
- dt-bindings: remove phy node descriptions in mdio node

Changes since v5:
- replace license boilerplate with SPDX Identifier
- remove inline directives and an unused function

Changes since v4:
- fix larger integer warning on AVE_PFMBYTE_MASK0

Changes since v3:
- remove checking dma address and use dma_set_mask() to restirct address
- replace ave_mdio_busywait() with read_poll_timeout()
- replace functions to access to registers with readl/writel() directly
- replace a function to access to macaddr with ave_hw_write_macaddr()
- change return value of ave_dma_map() to error value
- move mdiobus_unregister() from ave_remove() to ave_uninit()
- eliminate else block at the end of ave_dma_map()
- add mask definitions for packet filter
- sort bitmap definitions in descending order
- add error check to some functions
- rename and sort functions to clear sub-categories
- fix error value consistency
- remove unneeded initializers
- change type of constant arrays

Changes since v2:
- replace clk_get() with devm_clk_get()
- replace reset_control_get() with devm_reset_control_get_optional_shared()
- add error return when the error occurs on the above *_get functions
- sort soc data and compatible strings
- remove clearly obvious comments
- modify dt-bindings document consistent with these modifications

Changes since v1:
- add/remove devicetree properties and sub-node
  - remove "internal-phy-interrupt" and "desc-bits" property
  - add SoC data structures based on compatible strings
  - add node operation to apply "mdio" sub-node
- add support for features
  - add support for {get,set}_pauseparam and pause frame operations
  - add support for ndo_get_stats64 instead of ndo_get_stats
- replace with desiable functions
  - replace check for valid phy_mode with phy_interface{_mode}_is_rgmii()
  - replace phy attach message with phy_attached_info()
  - replace 32bit operation with {upper,lower}_32_bits() on ave_wdesc_addr()
  - replace nway_reset and get_link with generic functions
- move operations to proper functions
  - move phy_start_aneg() to ndo_open,
    and remove unnecessary PHY interrupt operations
    See http://www.spinics.net/lists/netdev/msg454590.html
  - move irq initialization and descriptor memory allocation to ndo_open
  - move initialization of reset and clock and mdiobus to ndo_init
- fix skbuffer operations
  - fix skb alignment operations and add Rx buffer adjustment for descriptor
    See http://www.spinics.net/lists/netdev/msg456014.html
  - add error returns when dma_map_single() failed
- clean up code structures
  - clean up wait-loop and wake-queue conditions
  - add ave_wdesc_addr() and offset definitions
  - add ave_macaddr_init() to clean up mac-address operation
  - fix checking whether Tx entry is not enough
  - fix supported features of phydev
  - add necessary free/disable operations
  - add phydev check on ave_{get,set}_wol()
  - remove netif_carrier functions, phydev initializer, and Tx budget check
- change obsolate codes
  - replace ndev->{base_addr,irq} with the members of ave_private
- rename goto labels and mask definitions, and remove unused codes
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ethernet: socionext: add AVE ethernet driver
Kunihiko Hayashi [Thu, 28 Dec 2017 06:58:12 +0000 (15:58 +0900)]
net: ethernet: socionext: add AVE ethernet driver

The UniPhier platform from Socionext provides the AVE ethernet
controller that includes MAC and MDIO bus supporting RGMII/RMII
modes. The controller is named AVE.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agodt-bindings: net: add DT bindings for Socionext UniPhier AVE
Kunihiko Hayashi [Thu, 28 Dec 2017 06:58:11 +0000 (15:58 +0900)]
dt-bindings: net: add DT bindings for Socionext UniPhier AVE

DT bindings for the AVE ethernet controller found on Socionext's
UniPhier platforms.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4/cxgb4vf: support for XLAUI Port Type
Ganesh Goudar [Thu, 28 Dec 2017 06:37:15 +0000 (12:07 +0530)]
cxgb4/cxgb4vf: support for XLAUI Port Type

Add support for new Backplane XLAUI port type.

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: display VNI correctly
Ganesh Goudar [Thu, 28 Dec 2017 05:59:52 +0000 (11:29 +0530)]
cxgb4: display VNI correctly

Fix incorrect VNI display in mps_tcam

Signed-off-by: Santosh Rastapur <santosh@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx5e: Move ethernet representors data into separate struct
Mark Bloch [Thu, 7 Dec 2017 20:55:10 +0000 (20:55 +0000)]
net/mlx5e: Move ethernet representors data into separate struct

Ethernet representors have a need to store data which is applicable
only for them. Create a priv void pointer in struct mlx5_eswitch_rep
and move mlx5e to store the relevant data there. As part of this change
we also initialize rep_if in mlx5e_rep_register_vf_vports() as otherwise the
E-Switch code will copy a priv value which is garbage.

We also rename mlx5_eswitch_get_uplink_netdev() to
mlx5_eswitch_get_uplink_priv() and make it return void *.
This way E-Switch code doesn't need to deal with net devices and
we leave the task of getting it to mlx5e.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: E-Switch, Create a dedicated send to vport rule deletion function
Mark Bloch [Thu, 7 Dec 2017 15:36:59 +0000 (15:36 +0000)]
net/mlx5: E-Switch, Create a dedicated send to vport rule deletion function

In order for representors to send packets directly to VFs we use an
E-Switch function which insert special rules into the HW. For symmetry
create an E-Switch function that deletes these rules as well.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: E-Switch, Move mlx5e only logic outside E-Switch
Mark Bloch [Thu, 7 Dec 2017 15:31:50 +0000 (15:31 +0000)]
net/mlx5: E-Switch, Move mlx5e only logic outside E-Switch

In our pursuit to cleanup e-switch sub-module from mlx5e specific code,
we move the functions that insert/remove the flow steering rules that
allow mlx5e representors to send packets directly to VFs into the EN
driver code.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: E-Switch, Simplify representor load/unload callback API
Mark Bloch [Fri, 25 Aug 2017 12:13:59 +0000 (12:13 +0000)]
net/mlx5: E-Switch, Simplify representor load/unload callback API

In the load() callback for loading representors we don't really need
struct mlx5_eswitch but struct mlx5_core_dev, pass it directly.

In the unload() callback for unloading representors we don't need the
struct mlx5_eswitch argument, remove it.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: E-Switch, Refactor load/unload of representors
Mark Bloch [Wed, 9 Aug 2017 14:50:57 +0000 (14:50 +0000)]
net/mlx5: E-Switch, Refactor load/unload of representors

Refactor the load/unload stages for better code reuse.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: E-Switch, Refactor vport representors initialization
Mark Bloch [Wed, 9 Aug 2017 11:47:14 +0000 (11:47 +0000)]
net/mlx5: E-Switch, Refactor vport representors initialization

Refactor the init stage of vport representors registration.
vport number and hw id can be assigned by the E-Switch driver and not by
the netdevice driver. While here, make the error path of mlx5_eswitch_init()
a reverse order of the good path, also use kcalloc to allocate an array
instead of kzalloc.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet: hns3: hns3_get_channels() can be static
kbuild test robot [Thu, 28 Dec 2017 01:09:59 +0000 (09:09 +0800)]
net: hns3: hns3_get_channels() can be static

Fixes: 482d2e9c1cc7 ("net: hns3: add support to query tqps number")
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
David S. Miller [Thu, 28 Dec 2017 01:40:32 +0000 (20:40 -0500)]
Merge git://git./linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2017-12-28

The following pull-request contains BPF updates for your *net-next* tree.

The main changes are:

1) Fix incorrect state pruning related to recognition of zero initialized
   stack slots, where stacksafe exploration would mistakenly return a
   positive pruning verdict too early ignoring other slots, from Gianluca.

2) Various BPF to BPF calls related follow-up fixes. Fix an off-by-one
   in maximum call depth check, and rework maximum stack depth tracking
   logic to fix a bypass of the total stack size check reported by Jann.
   Also fix a bug in arm64 JIT where prog->jited_len was uninitialized.
   Addition of various test cases to BPF selftests, from Alexei.

3) Addition of a BPF selftest to test_verifier that is related to BPF to
   BPF calls which demonstrates a late caller stack size increase and
   thus out of bounds access. Fixed above in 2). Test case from Jann.

4) Addition of correlating BPF helper calls, BPF to BPF calls as well
   as BPF maps to bpftool xlated dump in order to allow for better
   BPF program introspection and debugging, from Daniel.

5) Fixing several bugs in BPF to BPF calls kallsyms handling in order
   to get it actually to work for subprogs, from Daniel.

6) Extending sparc64 JIT support for BPF to BPF calls and fix a couple
   of build errors for libbpf on sparc64, from David.

7) Allow narrower context access for BPF dev cgroup typed programs in
   order to adapt to LLVM code generation. Also adjust memlock rlimit
   in the test_dev_cgroup BPF selftest, from Yonghong.

8) Add netdevsim Kconfig entry to BPF selftests since test_offload.py
   relies on netdevsim device being available, from Jakub.

9) Reduce scope of xdp_do_generic_redirect_map() to being static,
   from Xiongwei.

10) Minor cleanups and spelling fixes in BPF verifier, from Colin.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonfp: bpf: allocate vNIC priv for keeping track of the offloaded program
Jakub Kicinski [Wed, 27 Dec 2017 23:36:49 +0000 (15:36 -0800)]
nfp: bpf: allocate vNIC priv for keeping track of the offloaded program

After TC offloads were converted to callbacks we have no choice
but keep track of the offloaded filter in the driver.

Since this change came a little late in the release cycle
there were a number of conflicts and allocation of vNIC priv
structure seems to have slipped away in linux-next.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
David S. Miller [Thu, 28 Dec 2017 01:35:03 +0000 (20:35 -0500)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2017-12-28

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) Two small fixes for bpftool. Fix otherwise broken output if any of
   the system calls failed when listing maps in json format and instead
   of bailing out, skip maps or progs that disappeared between fetching
   next id and getting an fd for that id, both from Jakub.

2) Small fix in BPF selftests to respect LLC passed from command line
   when testing for -mcpu=probe presence, from Quentin.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoIB/mlx5: Fix mlx5_ib_alloc_mr error flow
Nitzan Carmi [Tue, 26 Dec 2017 09:20:20 +0000 (11:20 +0200)]
IB/mlx5: Fix mlx5_ib_alloc_mr error flow

ibmr.device is being set only after ib_alloc_mr() is
(successfully) complete. Therefore, in case mlx5_core_create_mkey()
return with error, the error flow calls mlx5_free_priv_descs()
which uses ibmr.device (which doesn't exist yet), causing
a NULL dereference oops.

To fix this, the IB device should be set in the mr struct earlier
stage (e.g. prior to calling mlx5_core_create_mkey()).

Fixes: 8a187ee52b04 ("IB/mlx5: Support the new memory registration API")
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Nitzan Carmi <nitzanc@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
6 years agoIB/core: Verify that QP is security enabled in create and destroy
Moni Shoua [Sun, 24 Dec 2017 11:54:58 +0000 (13:54 +0200)]
IB/core: Verify that QP is security enabled in create and destroy

The XRC target QP create flow sets up qp_sec only if there is an IB link with
LSM security enabled. However, several other related uAPI entry points blindly
follow the qp_sec NULL pointer, resulting in a possible oops.

Check for NULL before using qp_sec.

Cc: <stable@vger.kernel.org> # v4.12
Fixes: d291f1a65232 ("IB/core: Enforce PKey security on QPs")
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
6 years agoIB/uverbs: Fix command checking as part of ib_uverbs_ex_modify_qp()
Moni Shoua [Sun, 24 Dec 2017 11:54:57 +0000 (13:54 +0200)]
IB/uverbs: Fix command checking as part of ib_uverbs_ex_modify_qp()

If the input command length is larger than the kernel supports an error should
be returned in case the unsupported bytes are not cleared, instead of the
other way aroudn. This matches what all other callers of ib_is_udata_cleared
do and will avoid user ABI problems in the future.

Cc: <stable@vger.kernel.org> # v4.10
Fixes: 189aba99e700 ("IB/uverbs: Extend modify_qp and support packet pacing")
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
6 years agoIB/mlx5: Serialize access to the VMA list
Majd Dibbiny [Sun, 24 Dec 2017 11:54:56 +0000 (13:54 +0200)]
IB/mlx5: Serialize access to the VMA list

User-space applications can do mmap and munmap directly at
any time.

Since the VMA list is not protected with a mutex, concurrent
accesses to the VMA list from the mmap and munmap can cause
data corruption. Add a mutex around the list.

Cc: <stable@vger.kernel.org> # v4.7
Fixes: 7c2344c3bbf9 ("IB/mlx5: Implements disassociate_ucontext API")
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
6 years agonet/trace: fix printk format in inet_sock_set_state
Yafang Shao [Sun, 24 Dec 2017 15:10:39 +0000 (23:10 +0800)]
net/trace: fix printk format in inet_sock_set_state

There's a space character missed in the printk messages.

Put the message into one line could simplify searching for
the messages in the kernel source.

Fixes: 563e0bb0dc74("net: tracepoint: replace tcp_set_state tracepoint with inet_sock_set_state tracepoint")
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'net-zerocopy-refine'
David S. Miller [Wed, 27 Dec 2017 21:44:14 +0000 (16:44 -0500)]
Merge branch 'net-zerocopy-refine'

Willem de Bruijn says:

====================
zerocopy refinements

1/4 is a small optimization follow-up to the earlier fix to skb_segment:
    check skb state once per skb, instead of once per frag.
2/4 makes behavior more consistent between standard and zerocopy send:
    set the PSH bit when hitting MAX_SKB_FRAGS. This helps GRO.
3/4 resolves a surprising inconsistency in notification:
    because small packets were not stored in frags, they would not set
    the copied error code over loopback. This change also optimizes
    the path by removing copying and making tso_fragment cheaper.
4/4 follows-up to 3/4 by no longer allocated now unused memory.
    this was actually already in RFC patches, but dropped as I pared
    down the patch set during revisions.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotcp: do not allocate linear memory for zerocopy skbs
Willem de Bruijn [Sat, 23 Dec 2017 00:00:20 +0000 (19:00 -0500)]
tcp: do not allocate linear memory for zerocopy skbs

Zerocopy payload is now always stored in frags, and space for headers
is reversed, so this memory is unused.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotcp: place all zerocopy payload in frags
Willem de Bruijn [Sat, 23 Dec 2017 00:00:19 +0000 (19:00 -0500)]
tcp: place all zerocopy payload in frags

This avoids an unnecessary copy of 1-2KB and improves tso_fragment,
which has to fall back to tcp_fragment if skb->len != skb_data_len.

It also avoids a surprising inconsistency in notifications:
Zerocopy packets sent over loopback have their frags copied, so set
SO_EE_CODE_ZEROCOPY_COPIED in the notification. But this currently
does not happen for small packets, because when all data fits in the
linear fragment, data is not copied in skb_orphan_frags_rx.

Reported-by: Tom Deseyn <tom.deseyn@gmail.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotcp: push full zerocopy packets
Willem de Bruijn [Sat, 23 Dec 2017 00:00:18 +0000 (19:00 -0500)]
tcp: push full zerocopy packets

Skbs that reach MAX_SKB_FRAGS cannot be extended further. Do the
same for zerocopy frags as non-zerocopy frags and set the PSH bit.
This improves GRO assembly.

Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoskbuff: in skb_segment, call zerocopy functions once per nskb
Willem de Bruijn [Sat, 23 Dec 2017 00:00:17 +0000 (19:00 -0500)]
skbuff: in skb_segment, call zerocopy functions once per nskb

This is a net-next follow-up to commit 268b79067942 ("skbuff: orphan
frags before zerocopy clone"), which fixed a bug in net, but added a
call to skb_zerocopy_clone at each frag to do so.

When segmenting skbs with user frags, either the user frags must be
replaced with private copies and uarg released, or the uarg must have
its refcount increased for each new skb.

skb_orphan_frags does the first, except for cases that can handle
reference counting. skb_zerocopy_clone then does the second.

Call these once per nskb, instead of once per frag.

That is, in the common case. With a frag list, also refresh when the
origin skb (frag_skb) changes.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'trace-v4.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Wed, 27 Dec 2017 21:06:57 +0000 (13:06 -0800)]
Merge tag 'trace-v4.15-rc4' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "While doing tests on tracing over the network, I found that the
  packets were getting corrupted.

  In the process I found three bugs.

  One was the culprit, but the other two scared me. After deeper
  investigation, they were not as major as I thought they were, due to a
  signed compared to an unsigned that prevented a negative number from
  doing actual harm.

  The two bigger bugs:

   - Mask the ring buffer data page length. There are data flags at the
     high bits of the length field. These were not cleared via the
     length function, and the length could return a negative number.
     (Although the number returned was unsigned, but was assigned to a
     signed number) Luckily, this value was compared to PAGE_SIZE which
     is unsigned and kept it from entering the path that could have
     caused damage.

   - Check the page usage before reusing the ring buffer reader page.
     TCP increments the page ref when passing the page off to the
     network. The page is passed back to the ring buffer for use on
     free. But the page could still be in use by the TCP stack.

  Minor bugs:

   - Related to the first bug. No need to clear out the unused ring
     buffer data before sending to user space. It is now done by the
     ring buffer code itself.

   - Reset pointers after free on error path. There were some cases in
     the error path that pointers were freed but not set to NULL, and
     could have them freed again, having a pointer freed twice"

* tag 'trace-v4.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix possible double free on failure of allocating trace buffer
  tracing: Fix crash when it fails to alloc ring buffer
  ring-buffer: Do no reuse reader page if still in use
  tracing: Remove extra zeroing out of the ring buffer page
  ring-buffer: Mask out the info bits when returning buffer page length

6 years agoMerge tag 'sound-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Wed, 27 Dec 2017 20:59:27 +0000 (12:59 -0800)]
Merge tag 'sound-4.15-rc6' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "It seems that Santa overslept with a bunch of gifts; the majority of
  changes here are various device-specific ASoC fixes, most notably the
  revert of rcar IOMMU support and fsl_ssi AC97 fixes, but also lots of
  small fixes for codecs. Besides that, the usual HD-audio quirks and
  fixes are included, too"

* tag 'sound-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (31 commits)
  ALSA: hda - Fix missing COEF init for ALC225/295/299
  ALSA: hda: Drop useless WARN_ON()
  ALSA: hda - change the location for one mic on a Lenovo machine
  ALSA: hda - fix headset mic detection issue on a Dell machine
  ALSA: hda - Add MIC_NO_PRESENCE fixup for 2 HP machines
  ASoC: rsnd: fixup ADG register mask
  ASoC: rt5514-spi: only enable wakeup when fully initialized
  ASoC: nau8825: fix issue that pop noise when start capture
  ASoC: rt5663: Fix the wrong result of the first jack detection
  ASoC: rsnd: ssi: fix race condition in rsnd_ssi_pointer_update
  ASoC: Intel: Change kern log level to avoid unwanted messages
  ASoC: atmel-classd: select correct Kconfig symbol
  ASoC: wm_adsp: Fix validation of firmware and coeff lengths
  ASoC: Intel: Skylake: Do not check dev_type for dmic link type
  ASoC: rockchip: disable clock on error
  ASoC: tlv320aic31xx: Fix GPIO1 register definition
  ASoC: codecs: msm8916-wcd: Fix supported formats
  ASoC: fsl_asrc: Fix typo in a field define
  ASoC: rsnd: ssiu: clear SSI_MODE for non TDM Extended modes
  ASoC: da7218: Correct IRQ level in DT binding example
  ...