linux-2.6-microblaze.git
5 years agos390/qeth: use true and false for boolean values
Gustavo A. R. Silva [Thu, 9 Aug 2018 12:48:04 +0000 (14:48 +0200)]
s390/qeth: use true and false for boolean values

Return statements in functions returning bool should use true or false
instead of an integer value.

This issue was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: don't restrict qeth_card to DMA memory
Julian Wiedmann [Thu, 9 Aug 2018 12:48:03 +0000 (14:48 +0200)]
s390/qeth: don't restrict qeth_card to DMA memory

Allocating the main qeth_card struct with GFP_DMA blocks us from moving
it into netdev_priv(). But the only reason why we need DMA memory is the
ccw1 structs embedded into each ccw channel. So extract those into
separate allocations, like we already do for the cmd buffers.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: clean up card initialization
Julian Wiedmann [Thu, 9 Aug 2018 12:48:02 +0000 (14:48 +0200)]
s390/qeth: clean up card initialization

The qeth_card struct is kzalloc-ed, so remove all the redundant
0-initializations. While at it, split up what's left of
qeth_determine_card_type().

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: do basic setup for data channel
Julian Wiedmann [Thu, 9 Aug 2018 12:48:01 +0000 (14:48 +0200)]
s390/qeth: do basic setup for data channel

The data channel currently doesn't need a setup operation, because we
don't use pre-allocated cmd buffers for its IO. But subsequent changes
will introduce further setup that also applies to the data channel.
This refactors things a bit, so that the new stuff can then be
automatically applied to all channels.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: use qeth_setup_ccw() to set up all CCWs
Julian Wiedmann [Thu, 9 Aug 2018 12:48:00 +0000 (14:48 +0200)]
s390/qeth: use qeth_setup_ccw() to set up all CCWs

Re-work the helper a little bit, so that it can be used for all CCWs
that qeth issues.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: reduce hard-coded access to ccw channels
Julian Wiedmann [Thu, 9 Aug 2018 12:47:59 +0000 (14:47 +0200)]
s390/qeth: reduce hard-coded access to ccw channels

Where possible use accessor macros and local pointers to access the ccw
channels. This makes it less likely to miss a spot.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: extract helper for MPC protocol type
Julian Wiedmann [Thu, 9 Aug 2018 12:47:58 +0000 (14:47 +0200)]
s390/qeth: extract helper for MPC protocol type

Just a little code deduplication.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
David S. Miller [Thu, 9 Aug 2018 18:52:36 +0000 (11:52 -0700)]
Merge ra./pub/scm/linux/kernel/git/davem/net

Overlapping changes in RXRPC, changing to ktime_get_seconds() whilst
adding some tracepoints.

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'Add-support-for-XGMAC2-in-stmmac'
David S. Miller [Thu, 9 Aug 2018 18:16:29 +0000 (11:16 -0700)]
Merge branch 'Add-support-for-XGMAC2-in-stmmac'

Jose Abreu says:

====================
Add support for XGMAC2 in stmmac

This series adds support for 10Gigabit IP in stmmac. The IP is called XGMAC2
and has many similarities with GMAC4. Due to this, its relatively easy to
incorporate this new IP into stmmac driver by adding a new block and
filling the necessary callbacks.

The functionality added by this series is still reduced but its only a
starting point which will later be expanded.

I splitted the patches into funcionality and to ease the review. Only the
patch 8/9 really enables the XGMAC2 block by adding a new compatible string.

Version 4 addresses review comments of Florian Fainelli and Rob Herring.

NOTE: Although the IP supports 10G, for now it was only possible to test it
at 1G speed due to 10G PHY HW shipping problems. Here follows iperf3
results at 1G:

Connecting to host 192.168.0.10, port 5201
[  4] local 192.168.0.3 port 39178 connected to 192.168.0.10 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   110 MBytes   920 Mbits/sec    0    482 KBytes
[  4]   1.00-2.00   sec   113 MBytes   946 Mbits/sec    0    482 KBytes
[  4]   2.00-3.00   sec   112 MBytes   937 Mbits/sec    0    482 KBytes
[  4]   3.00-4.00   sec   113 MBytes   946 Mbits/sec    0    482 KBytes
[  4]   4.00-5.00   sec   112 MBytes   935 Mbits/sec    0    482 KBytes
[  4]   5.00-6.00   sec   113 MBytes   946 Mbits/sec    0    482 KBytes
[  4]   6.00-7.00   sec   112 MBytes   937 Mbits/sec    0    482 KBytes
[  4]   7.00-8.00   sec   113 MBytes   946 Mbits/sec    0    482 KBytes
[  4]   8.00-9.00   sec   112 MBytes   937 Mbits/sec    0    482 KBytes
[  4]   9.00-10.00  sec   113 MBytes   946 Mbits/sec    0    482 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1.09 GBytes   940 Mbits/sec    0             sender
[  4]   0.00-10.00  sec  1.09 GBytes   938 Mbits/sec                  receiver
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agodt-bindings: net: stmmac: Add the bindings documentation for XGMAC2.
Jose Abreu [Wed, 8 Aug 2018 08:04:37 +0000 (09:04 +0100)]
dt-bindings: net: stmmac: Add the bindings documentation for XGMAC2.

Adds the documentation for XGMAC2 DT bindings.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Add the bindings parsing for XGMAC2
Jose Abreu [Wed, 8 Aug 2018 08:04:36 +0000 (09:04 +0100)]
net: stmmac: Add the bindings parsing for XGMAC2

Add the bindings parsing for XGMAC2 IP block.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Integrate XGMAC into main driver flow
Jose Abreu [Wed, 8 Aug 2018 08:04:35 +0000 (09:04 +0100)]
net: stmmac: Integrate XGMAC into main driver flow

Now that we have all the XGMAC related callbacks, lets start integrating
this IP block into main driver.

Also, we corrected the initialization flow to only start DMA after
setting descriptors length.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Add PTP support for XGMAC2
Jose Abreu [Wed, 8 Aug 2018 08:04:34 +0000 (09:04 +0100)]
net: stmmac: Add PTP support for XGMAC2

XGMAC2 uses the same engine of timestamping as GMAC4. Let's use the same
callbacks.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Add MDIO related functions for XGMAC2
Jose Abreu [Wed, 8 Aug 2018 08:04:33 +0000 (09:04 +0100)]
net: stmmac: Add MDIO related functions for XGMAC2

Add the MDIO related funcionalities for the new IP block XGMAC2.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Add descriptor related callbacks for XGMAC2
Jose Abreu [Wed, 8 Aug 2018 08:04:32 +0000 (09:04 +0100)]
net: stmmac: Add descriptor related callbacks for XGMAC2

Add the descriptor related callbacks for the new IP block XGMAC2.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Add DMA related callbacks for XGMAC2
Jose Abreu [Wed, 8 Aug 2018 08:04:31 +0000 (09:04 +0100)]
net: stmmac: Add DMA related callbacks for XGMAC2

Add the DMA related callbacks for the new IP block XGMAC2.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Add MAC related callbacks for XGMAC2
Jose Abreu [Wed, 8 Aug 2018 08:04:30 +0000 (09:04 +0100)]
net: stmmac: Add MAC related callbacks for XGMAC2

Add the MAC related callbacks for the new IP block XGMAC2.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Add XGMAC 2.10 HWIF entry
Jose Abreu [Wed, 8 Aug 2018 08:04:29 +0000 (09:04 +0100)]
net: stmmac: Add XGMAC 2.10 HWIF entry

Add a new entry to HWIF table for XGMAC 2.10. For now we fill it with
empty callbacks which will be added in posterior patches.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'More-complete-PHYLINK-support-for-mv88e6xxx'
David S. Miller [Thu, 9 Aug 2018 18:08:21 +0000 (11:08 -0700)]
Merge branch 'More-complete-PHYLINK-support-for-mv88e6xxx'

Andrew Lunn says:

====================
More complete PHYLINK support for mv88e6xxx

Previous patches added sufficient PHYLINK support to the mv88e6xxx
that it did not break existing use cases, basically fixed-link phys.

This patchset builds out the support so that SFP modules, up to
2.5Gbps can be supported, on mv88e6390X, on ports 9 and 10. It also
provides a framework which can be extended to support SFPs on ports
2-8 of mv88e6390X, 10Gbps PHYs, and SFP support on the 6352 family.

Russell King did much of the initial work, implementing the validate
and mac_link_state calls. However, there is an important TODO in the
commit message:

needs to call phylink_mac_change() when the port link comes up/goes down.

The remaining patches implement this, by adding more support for the
SERDES interfaces, in particular, interrupt support so we get notified
when the SERDES gains/looses sync.

This has been tested on the ZII devel C, using a Clearfog as peer
device.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: Re-setup interrupts on CMODE change.
Andrew Lunn [Thu, 9 Aug 2018 13:38:49 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: Re-setup interrupts on CMODE change.

When a port changes CMODE, the SERDES interface being used can change.
Disable interrupts for the old SERDES interface, and enable interrupts
on the new.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: Add SERDES phydev_mac_change up for 6390
Andrew Lunn [Thu, 9 Aug 2018 13:38:48 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: Add SERDES phydev_mac_change up for 6390

phylink wants to know when the MAC layers notices a change in the
link. For the 6390 family, this is a change in the SERDES state.

Add interrupt support for the SERDES interface used to implement
SGMII/1000Base-X/2500Base-X. This is currently limited to ports 9 and
10. Support for the 10G SERDES and other ports will be added later,
building on this basic framework.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: link mv88e6xxx_port to mv88e6xxx_chip
Andrew Lunn [Thu, 9 Aug 2018 13:38:47 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: link mv88e6xxx_port to mv88e6xxx_chip

An up coming change will register interrupts for individual switch
ports, using the mv88e6xxx_port as the interrupt context information.
Add members to the mv88e6xxx_port structure so we can link it back to
the mv88e6xxx_chip member the port belongs to and the port number of
the port.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: Power on/off SERDES on cmode change
Andrew Lunn [Thu, 9 Aug 2018 13:38:46 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: Power on/off SERDES on cmode change

The 6390 family has a number of SERDES interfaces per port. When the
cmode changes, eg 1000Base-X to XAUI, the SERDES interface in use will
also change. Power down the old SERDES interface and power up the new
SERDES interface.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: Cache the port cmode
Andrew Lunn [Thu, 9 Aug 2018 13:38:45 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: Cache the port cmode

The ports CMODE indicates the type of link between the MAC and the
PHY. It is used often in the SERDES code. Rather than read it each
time, cache its value.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: 2500Base-X uses the 1000Base-X SERDES
Andrew Lunn [Thu, 9 Aug 2018 13:38:44 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: 2500Base-X uses the 1000Base-X SERDES

The 6390 has three different SERDES interface types. 2500Base-X is
implemented by the SGMII/1000Base-X SERDES. So power on/off the
correct SERDES.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: Add serdes register read/write helper
Andrew Lunn [Thu, 9 Aug 2018 13:38:43 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: Add serdes register read/write helper

Add a helper for accessing SERDES registers of the 6390 family.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: Rename sgmii/10g power functions
Andrew Lunn [Thu, 9 Aug 2018 13:38:42 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: Rename sgmii/10g power functions

There is a need to add more functions manipulating the SERDES
interfaces. Cleanup the namespace.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: 6390 vs 6390X SERDES support
Andrew Lunn [Thu, 9 Aug 2018 13:38:41 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: 6390 vs 6390X SERDES support

The 6390 has two SERDES interfaces, used by ports 9 and 10.  The 6390X
has eight SERDES interfaces. These allow ports 9 and 10 to do 10G. Or
if lower speeds are used, some of the SERDES interfaces can be used by
ports 2-8 for 1000Base-X.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: Refactor SERDES lane code
Andrew Lunn [Thu, 9 Aug 2018 13:38:40 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: Refactor SERDES lane code

The 6390 family has 8 SERDES lanes. What ports use these lanes depends
on how ports 9 and 10 are configured. If 9 and 10 does not make use of
a line, one of the lower ports can use it.

Add a function to return the lane a port is using, if any, and simplify
the code to power up/down the lane.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: add phylink support
Russell King [Thu, 9 Aug 2018 13:38:39 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: add phylink support

Add rudimentary phylink support to mv88e6xxx.

TODO:
- needs to call phylink_mac_change() when the port link comes up/goes down.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agophylink: add helper for configuring 2500BaseX modes
Russell King [Thu, 9 Aug 2018 13:38:38 +0000 (15:38 +0200)]
phylink: add helper for configuring 2500BaseX modes

Add a helper for MAC drivers to use in their validate callback to deal
with 2500BaseX vs 1000BaseX modes, where the hardware supports both
but it is not possible to automatically select between them.

This helper defaults to 1000BaseX, as that is the 802.3 standard, and
will allow users to select 2500BaseX either by forcing the speed if
AN is disabled, or by changing the advertising mask if AN is enabled.
Disabling AN is not recommended as it is only the speed that we're
interested in controlling, not the duplex or pause mode parameters.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: Add support to enabling pause
Andrew Lunn [Thu, 9 Aug 2018 13:38:37 +0000 (15:38 +0200)]
net: dsa: mv88e6xxx: Add support to enabling pause

The 6185 can enable/disable 802.3z pause be setting the MyPause bit in
the port status register. Add an op to support this.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'mlxsw-Various-updates'
David S. Miller [Thu, 9 Aug 2018 17:36:11 +0000 (10:36 -0700)]
Merge branch 'mlxsw-Various-updates'

Ido Schimmel says:

====================
mlxsw: Various updates

Patches 1-3 update the driver to use a new firmware version. Due to a
recently discovered issue, the version (and future ones) does not
support matching on VLAN ID at egress. This is enforced in the driver
and reported back to the user via extack.

Patch 4 adds a new selftest for the recently introduced algorithmic
TCAM.

Patch 5 converts the driver to use SPDX identifiers.

Patches 6-7 fix a bug in ethtool stats reporting and expose counters for
all 16 TCs, following recent MC-aware changes that utilize TCs 8-15.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum: Expose counter for all 16 TCs
Petr Machata [Thu, 9 Aug 2018 08:59:13 +0000 (11:59 +0300)]
mlxsw: spectrum: Expose counter for all 16 TCs

Before MC-aware mode was enabled in commit 7b8195306694 ("mlxsw:
spectrum: Configure MC-aware mode on mlxsw ports"), only 8 traffic
classes were used. Under MC-aware regime, however, besides using TCs
0-7 for UC traffic, it additionally uses TCs 8-15 for BUM traffic. It
is therefore desirable to show counters for these TCs as well.

Update ethtool stats pool length, mlxsw_sp_port_get_strings() and
mlxsw_sp_port_get_stats() to include artifacts for all 16 TCs. For
consistency and simplicity, expose tc_no_buffer_discard_uc_tc for BUM
TCs as well, even though it ought to stay at 0 all the time.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum: Include RFC-2819 counters in stats length
Petr Machata [Thu, 9 Aug 2018 08:59:12 +0000 (11:59 +0300)]
mlxsw: spectrum: Include RFC-2819 counters in stats length

The function mlxsw_sp_port_get_sset_count() is supposed to return the
total number of ethtool strings that mlxsw supports. Specifically for
names of statistic counters (the only string type that mlxsw supports
as of now), that number is stored in MLXSW_SP_PORT_ETHTOOL_STATS_LEN.
However, when adding RFC-2891 counters, that define wasn't updated to
include the new counters. As a result, ethtool snips out the counters
towards the end of the list, which contains per-TC counters, and only
the first three traffic classes end up being reported.

Fix by adding MLXSW_SP_PORT_HW_RFC_2819_STATS_LEN as appropriate.

Fixes: 1222d15a01c7 ("mlxsw: spectrum: Expose counters for various packet sizes")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: Replace license text with SPDX identifiers and adjust copyrights
Jiri Pirko [Thu, 9 Aug 2018 08:59:11 +0000 (11:59 +0300)]
mlxsw: Replace license text with SPDX identifiers and adjust copyrights

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoselftests: mlxsw: Add TC flower test for Spectrum-2
Ido Schimmel [Thu, 9 Aug 2018 08:59:10 +0000 (11:59 +0300)]
selftests: mlxsw: Add TC flower test for Spectrum-2

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum: Reset FW after flash
Jiri Pirko [Thu, 9 Aug 2018 08:59:09 +0000 (11:59 +0300)]
mlxsw: spectrum: Reset FW after flash

Recent FW fixes a bug and allows to load newly flashed FW image after
reset. So make sure the reset happens after flash. Indicate the need
down to PCI layer by -EAGAIN.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum: Update the supported firmware to version 13.1702.6
Nir Dotan [Thu, 9 Aug 2018 08:59:08 +0000 (11:59 +0300)]
mlxsw: spectrum: Update the supported firmware to version 13.1702.6

This new firmware contains:
        - Support for new types of cables
        - Support for flashing future firmware without reboot
        - Support for Router ARP BC and UC traps

Signed-off-by: Nir Dotan <nird@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum_flower: Disallow usage of vlan_id key on egress
Nir Dotan [Thu, 9 Aug 2018 08:59:07 +0000 (11:59 +0300)]
mlxsw: spectrum_flower: Disallow usage of vlan_id key on egress

As recent spectrum FW imposes a limitation on using vlan_id key for
egress ACL, disallow the usage of that key accordingly and return a
proper extack message.

Signed-off-by: Nir Dotan <nird@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Thu, 9 Aug 2018 17:00:15 +0000 (10:00 -0700)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fix from Herbert Xu:
 "This fixes a performance regression in arm64 NEON crypto as well as a
  crash in x86 aegis/morus on unsupported CPUs"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: x86/aegis,morus - Fix and simplify CPUID checks
  crypto: arm64 - revert NEON yield for fast AEAD implementations

5 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Thu, 9 Aug 2018 16:57:13 +0000 (09:57 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) The real fix for the ipv6 route metric leak Sabrina was seeing, from
    Cong Wang.

 2) Fix syzbot triggers AF_PACKET v3 ring buffer insufficient room
    conditions, from Willem de Bruijn.

 3) vsock can reinitialize active work struct, fix from Cong Wang.

 4) RXRPC keepalive generator can wedge a cpu, fix from David Howells.

 5) Fix locking in AF_SMC ioctl, from Ursula Braun.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  dsa: slave: eee: Allow ports to use phylink
  net/smc: move sock lock in smc_ioctl()
  net/smc: allow sysctl rmem and wmem defaults for servers
  net/smc: no shutdown in state SMC_LISTEN
  net: aquantia: Fix IFF_ALLMULTI flag functionality
  rxrpc: Fix the keepalive generator [ver #2]
  net/mlx5e: Cleanup of dcbnl related fields
  net/mlx5e: Properly check if hairpin is possible between two functions
  vhost: reset metadata cache when initializing new IOTLB
  llc: use refcount_inc_not_zero() for llc_sap_find()
  dccp: fix undefined behavior with 'cwnd' shift in ccid2_cwnd_restart()
  tipc: fix an interrupt unsafe locking scenario
  vsock: split dwork to avoid reinitializations
  net: thunderx: check for failed allocation lmac->dmacs
  cxgb4: mk_act_open_req() buggers ->{local, peer}_ip on big-endian hosts
  packet: refine ring v3 block size test to hold one frame
  ip6_tunnel: use the right value for ipv4 min mtu check in ip6_tnl_xmit
  ipv6: fix double refcount of fib6_metrics

5 years agoMerge branch 'mlx5-next'
David S. Miller [Thu, 9 Aug 2018 02:34:55 +0000 (19:34 -0700)]
Merge branch 'mlx5-next'

Saeed Mahameed says:

====================
Mellanox, mlx5 next updates 2018-08-09

This series includes mlx5 core driver updates and mostly simple
cleanups.

From Denis: Use max #EQs reported by firmware to request MSIX vectors.

From Eli: Trivial cleanups, unused arguments/functions and reduce
command polling interval when command interface is in polling mode.

From Eran: Rename vport state enums, to better reflect their actual
usage.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5: Reduce command polling interval
Eli Cohen [Wed, 8 Aug 2018 23:23:53 +0000 (16:23 -0700)]
net/mlx5: Reduce command polling interval

Use cond_resched() instead of usleep_range() to decrease the time
between polling attempts thus reducing overall driver load time.

Below is a comparison before and after the change, of loading eight
virtual functions.

Before:
real    0m8.785s
user    0m0.093s
sys     0m0.090s

After:
real    0m5.730s
user    0m0.097s
sys     0m0.087s

Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5: Unexport functions that need not be exported
Eli Cohen [Wed, 8 Aug 2018 23:23:52 +0000 (16:23 -0700)]
net/mlx5: Unexport functions that need not be exported

mlx5_query_vport_state() and mlx5_modify_vport_admin_state() are used
only from within mlx5_core  - unexport them.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5: Remove unused mlx5_query_vport_admin_state
Eli Cohen [Wed, 8 Aug 2018 23:23:51 +0000 (16:23 -0700)]
net/mlx5: Remove unused mlx5_query_vport_admin_state

mlx5_query_vport_admin_state() is not used anywhere. Remove it.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5: E-Switch, Remove unused argument when creating legacy FDB
Eli Cohen [Wed, 8 Aug 2018 23:23:50 +0000 (16:23 -0700)]
net/mlx5: E-Switch, Remove unused argument when creating legacy FDB

Remove unused nvports argument.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5: Rename modify/query_vport state related enums
Eran Ben Elisha [Wed, 8 Aug 2018 23:23:49 +0000 (16:23 -0700)]
net/mlx5: Rename modify/query_vport state related enums

Modify and query vport state commands share the same admin_state and
op_mod values, rename the enums to fit them both.

In addition, remove the esw prefix from the admin state enum as this
also applied for vnic.

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5: Use max_num_eqs for calculation of required MSIX vectors
Denis Drozdov [Wed, 8 Aug 2018 23:23:48 +0000 (16:23 -0700)]
net/mlx5: Use max_num_eqs for calculation of required MSIX vectors

New firmware has defined new HCA capability field called "max_num_eqs",
that is the number of available EQs after subtracting reserved FW EQs.

Before this capability the FW reported the EQ number in "log_max_eqs",
the reported value also contained FW reserved EQs, but the driver might
be failing to load on 320 cpus systems due to the fact that FW
reserved EQs were not available to the driver.

Now the driver has to obtain max_num_eqs value from new FW to get real
number of EQs available.

Signed-off-by: Denis Drozdov <denisd@mellanox.com>
Reviewed-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agodsa: slave: eee: Allow ports to use phylink
Andrew Lunn [Wed, 8 Aug 2018 18:56:40 +0000 (20:56 +0200)]
dsa: slave: eee: Allow ports to use phylink

For a port to be able to use EEE, both the MAC and the PHY must
support EEE. A phy can be provided by both a phydev or phylink. Verify
at least one of these exist, not just phydev.

Fixes: aab9c4067d23 ("net: dsa: Plug in PHYLINK support")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'smc-fixes'
David S. Miller [Thu, 9 Aug 2018 02:14:23 +0000 (19:14 -0700)]
Merge branch 'smc-fixes'

Ursula Braun says:

====================
net/smc: fixes 2018-08-08

here are small fixes for SMC: The first patch makes sure, shutdown code
is not executed for sockets in state SMC_LISTEN. The second patch resets
send and receive buffer values for accepted sockets, since TCP buffer size
optimizations for the internal CLC socket should not be forwarded to the
outer SMC socket. The third patch solves a race between connect and ioctl
reported by syzbot.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/smc: move sock lock in smc_ioctl()
Ursula Braun [Wed, 8 Aug 2018 12:13:21 +0000 (14:13 +0200)]
net/smc: move sock lock in smc_ioctl()

When an SMC socket is connecting it is decided whether fallback to
TCP is needed. To avoid races between connect and ioctl move the
sock lock before the use_fallback check.

Reported-by: syzbot+5b2cece1a8ecb2ca77d8@syzkaller.appspotmail.com
Reported-by: syzbot+19557374321ca3710990@syzkaller.appspotmail.com
Fixes: 1992d99882af ("net/smc: take sock lock in smc_ioctl()")
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/smc: allow sysctl rmem and wmem defaults for servers
Ursula Braun [Wed, 8 Aug 2018 12:13:20 +0000 (14:13 +0200)]
net/smc: allow sysctl rmem and wmem defaults for servers

Without setsockopt SO_SNDBUF and SO_RCVBUF settings, the sysctl
defaults net.ipv4.tcp_wmem and net.ipv4.tcp_rmem should be the base
for the sizes of the SMC sndbuf and rcvbuf. Any TCP buffer size
optimizations for servers should be ignored.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/smc: no shutdown in state SMC_LISTEN
Ursula Braun [Wed, 8 Aug 2018 12:13:19 +0000 (14:13 +0200)]
net/smc: no shutdown in state SMC_LISTEN

Invoking shutdown for a socket in state SMC_LISTEN does not make
sense. Nevertheless programs like syzbot fuzzing the kernel may
try to do this. For SMC this means a socket refcounting problem.
This patch makes sure a shutdown call for an SMC socket in state
SMC_LISTEN simply returns with -ENOTCONN.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: aquantia: Fix IFF_ALLMULTI flag functionality
Dmitry Bogdanov [Wed, 8 Aug 2018 11:06:32 +0000 (14:06 +0300)]
net: aquantia: Fix IFF_ALLMULTI flag functionality

It was noticed that NIC always pass all multicast traffic to the host
regardless of IFF_ALLMULTI flag on the interface.
The rule in MC Filter Table in NIC, that is configured to accept any
multicast packets, is turning on if IFF_MULTICAST flag is set on the
interface. It leads to passing all multicast traffic to the host.
This fix changes the condition to turn on that rule by checking
IFF_ALLMULTI flag as it should.

Fixes: b21f502f84be ("net:ethernet:aquantia: Fix for multicast filter handling.")
Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agorxrpc: Fix the keepalive generator [ver #2]
David Howells [Wed, 8 Aug 2018 10:30:02 +0000 (11:30 +0100)]
rxrpc: Fix the keepalive generator [ver #2]

AF_RXRPC has a keepalive message generator that generates a message for a
peer ~20s after the last transmission to that peer to keep firewall ports
open.  The implementation is incorrect in the following ways:

 (1) It mixes up ktime_t and time64_t types.

 (2) It uses ktime_get_real(), the output of which may jump forward or
     backward due to adjustments to the time of day.

 (3) If the current time jumps forward too much or jumps backwards, the
     generator function will crank the base of the time ring round one slot
     at a time (ie. a 1s period) until it catches up, spewing out VERSION
     packets as it goes.

Fix the problem by:

 (1) Only using time64_t.  There's no need for sub-second resolution.

 (2) Use ktime_get_seconds() rather than ktime_get_real() so that time
     isn't perceived to go backwards.

 (3) Simplifying rxrpc_peer_keepalive_worker() by splitting it into two
     parts:

     (a) The "worker" function that manages the buckets and the timer.

     (b) The "dispatch" function that takes the pending peers and
       potentially transmits a keepalive packet before putting them back
       in the ring into the slot appropriate to the revised last-Tx time.

 (4) Taking everything that's pending out of the ring and splicing it into
     a temporary collector list for processing.

     In the case that there's been a significant jump forward, the ring
     gets entirely emptied and then the time base can be warped forward
     before the peers are processed.

     The warping can't happen if the ring isn't empty because the slot a
     peer is in is keepalive-time dependent, relative to the base time.

 (5) Limit the number of iterations of the bucket array when scanning it.

 (6) Set the timer to skip any empty slots as there's no point waking up if
     there's nothing to do yet.

This can be triggered by an incoming call from a server after a reboot with
AF_RXRPC and AFS built into the kernel causing a peer record to be set up
before userspace is started.  The system clock is then adjusted by
userspace, thereby potentially causing the keepalive generator to have a
meltdown - which leads to a message like:

watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [kworker/0:1:23]
...
Workqueue: krxrpcd rxrpc_peer_keepalive_worker
EIP: lock_acquire+0x69/0x80
...
Call Trace:
 ? rxrpc_peer_keepalive_worker+0x5e/0x350
 ? _raw_spin_lock_bh+0x29/0x60
 ? rxrpc_peer_keepalive_worker+0x5e/0x350
 ? rxrpc_peer_keepalive_worker+0x5e/0x350
 ? __lock_acquire+0x3d3/0x870
 ? process_one_work+0x110/0x340
 ? process_one_work+0x166/0x340
 ? process_one_work+0x110/0x340
 ? worker_thread+0x39/0x3c0
 ? kthread+0xdb/0x110
 ? cancel_delayed_work+0x90/0x90
 ? kthread_stop+0x70/0x70
 ? ret_from_fork+0x19/0x24

Fixes: ace45bec6d77 ("rxrpc: Fix firewall route keepalive")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'mlx5-fixes'
David S. Miller [Thu, 9 Aug 2018 02:07:38 +0000 (19:07 -0700)]
Merge branch 'mlx5-fixes'

Saeed Mahameed says:

====================
Mellanox, mlx5e fixes 2018-08-07

I know it is late into 4.18 release, and this is why I am submitting
only two mlx5e ethernet fixes.

The first one from Or, is needed for -stable and it fixes hairpin
for "same device" check.

The second fix is a non risk fix from Huy which cleans up and improves
error return value reporting for dcbnl_ieee_setapp.

For -stable v4.16
- net/mlx5e: Properly check if hairpin is possible between two functions
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5e: Cleanup of dcbnl related fields
Huy Nguyen [Wed, 8 Aug 2018 22:48:08 +0000 (15:48 -0700)]
net/mlx5e: Cleanup of dcbnl related fields

Remove unused netdev_registered_init/remove in en.h
Return ENOSUPPORT if the check MLX5_DSCP_SUPPORTED fails.
Remove extra white space

Fixes: 2a5e7a1344f4 ("net/mlx5e: Add dcbnl dscp to priority support")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Cc: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5e: Properly check if hairpin is possible between two functions
Or Gerlitz [Wed, 8 Aug 2018 22:48:07 +0000 (15:48 -0700)]
net/mlx5e: Properly check if hairpin is possible between two functions

The current check relies on function BDF addresses and can get
us wrong e.g when two VFs are assigned into a VM and the PCI
v-address is set by the hypervisor.

Fixes: 5c65c564c962 ('net/mlx5e: Support offloading TC NIC hairpin flows')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reported-by: Alaa Hleihel <alaa@mellanox.com>
Tested-by: Alaa Hleihel <alaa@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoieee802154: hwsim: fix missing unlock on error in hwsim_add_one()
Wei Yongjun [Wed, 8 Aug 2018 03:10:39 +0000 (03:10 +0000)]
ieee802154: hwsim: fix missing unlock on error in hwsim_add_one()

Add the missing unlock before return from function hwsim_add_one()
in the error handling case.

Fixes: f25da51fdc38 ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoieee802154: hwsim: fix copy-paste error in hwsim_set_edge_lqi()
Wei Yongjun [Wed, 8 Aug 2018 02:43:46 +0000 (02:43 +0000)]
ieee802154: hwsim: fix copy-paste error in hwsim_set_edge_lqi()

The return value from kzalloc() is not checked correctly. The
test is done against a wrong variable. This patch fix it.

Fixes: f25da51fdc38 ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoieee802154: hwsim: fix rcu handling
Alexander Aring [Tue, 7 Aug 2018 23:32:49 +0000 (19:32 -0400)]
ieee802154: hwsim: fix rcu handling

This patch adds missing rcu_assign_pointer()/rcu_dereference() to used rcu
pointers. There was already a previous commit c5d99d2b35da ("ieee802154:
hwsim: fix rcu address annotation"), but there was more which was
pointed out on my side by using newest sparse version.

Cc: Stefan Schmidt <stefan@datenfreihafen.org>
Fixes: f25da51fdc38 ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoparisc: Define mb() and add memory barriers to assembler unlock sequences
John David Anglin [Sun, 5 Aug 2018 17:30:31 +0000 (13:30 -0400)]
parisc: Define mb() and add memory barriers to assembler unlock sequences

For years I thought all parisc machines executed loads and stores in
order. However, Jeff Law recently indicated on gcc-patches that this is
not correct. There are various degrees of out-of-order execution all the
way back to the PA7xxx processor series (hit-under-miss). The PA8xxx
series has full out-of-order execution for both integer operations, and
loads and stores.

This is described in the following article:
http://web.archive.org/web/20040214092531/http://www.cpus.hp.com/technical_references/advperf.shtml

For this reason, we need to define mb() and to insert a memory barrier
before the store unlocking spinlocks. This ensures that all memory
accesses are complete prior to unlocking. The ldcw instruction performs
the same function on entry.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # 4.0+
Signed-off-by: Helge Deller <deller@gmx.de>
5 years agoparisc: Enable CONFIG_MLONGCALLS by default
Helge Deller [Sat, 28 Jul 2018 09:47:17 +0000 (11:47 +0200)]
parisc: Enable CONFIG_MLONGCALLS by default

Enable the -mlong-calls compiler option by default, because otherwise in most
cases linking the vmlinux binary fails due to truncations of R_PARISC_PCREL22F
relocations. This fixes building the 64-bit defconfig.

Cc: stable@vger.kernel.org # 4.0+
Signed-off-by: Helge Deller <deller@gmx.de>
5 years agonet-next: hinic: fix a problem in free_tx_poll()
Zhao Chen [Wed, 8 Aug 2018 06:37:30 +0000 (06:37 +0000)]
net-next: hinic: fix a problem in free_tx_poll()

This patch fixes the problem below. The problem can be reproduced by the
following steps:
1) Connecting all HiNIC interfaces
2) On server side
    # sudo ifconfig eth0 192.168.100.1 up #Using MLX CX4 card
    # iperf -s
3) On client side
    # sudo ifconfig eth0 192.168.100.2 up #Using our HiNIC card
    # iperf -c 192.168.101.1 -P 10 -t 100000

after hours of testing, we will see errors:

    hinic 0000:05:00.0: No MGMT msg handler, mod = 0
    hinic 0000:05:00.0: No MGMT msg handler, mod = 0
    hinic 0000:05:00.0: No MGMT msg handler, mod = 0
    hinic 0000:05:00.0: No MGMT msg handler, mod = 0

The errors are caused by the following problem.
1) The hinic_get_wqe() checks the "wq->delta" to allocate new WQEs:

if (atomic_sub_return(num_wqebbs, &wq->delta) <= 0) {
atomic_add(num_wqebbs, &wq->delta);
return ERR_PTR(-EBUSY);
}

If the WQE occupies multiple pages, the shadow WQE will be used. Then the
hinic_xmit_frame() fills the WQE.

2) While in parallel with 1), the free_tx_poll() checks the "wq->delta"
to free old WQEs:

if ((atomic_read(&wq->delta) + num_wqebbs) > wq->q_depth)
return ERR_PTR(-EBUSY);

There is a probability that the shadow WQE which hinic_xmit_frame() is
using will be damaged by copy_wqe_to_shadow():

if (curr_pg != end_pg) {
void *shadow_addr = &wq->shadow_wqe[curr_pg * wq->max_wqe_size];

copy_wqe_to_shadow(wq, shadow_addr, num_wqebbs, *cons_idx);
return shadow_addr;
}

This can cause WQE data error and you will see the above error messages.
This patch fixes the problem.

Signed-off-by: Zhao Chen <zhaochen6@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agovhost: reset metadata cache when initializing new IOTLB
Jason Wang [Wed, 8 Aug 2018 03:43:04 +0000 (11:43 +0800)]
vhost: reset metadata cache when initializing new IOTLB

We need to reset metadata cache during new IOTLB initialization,
otherwise the stale pointers to previous IOTLB may be still accessed
which will lead a use after free.

Reported-by: syzbot+c51e6736a1bf614b3272@syzkaller.appspotmail.com
Fixes: f88949138058 ("vhost: introduce O(1) vq metadata cache")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet:mod: remove unneeded variable 'ret' in init_p9
zhong jiang [Tue, 7 Aug 2018 11:20:09 +0000 (19:20 +0800)]
net:mod: remove unneeded variable 'ret' in init_p9

The ret is modified after initalization, so just remove it and
return 0.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet:af_iucv: get rid of the unneeded variable 'err' in afiucv_pm_freeze
zhong jiang [Tue, 7 Aug 2018 11:20:08 +0000 (19:20 +0800)]
net:af_iucv: get rid of the unneeded variable 'err' in afiucv_pm_freeze

We will not use the variable 'err' after initalization, So remove it and
return 0.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: nixge: Get rid of unused struct member 'last_link'
Moritz Fischer [Tue, 7 Aug 2018 23:35:20 +0000 (16:35 -0700)]
net: nixge: Get rid of unused struct member 'last_link'

Get rid of unused struct member 'last_link'

Signed-off-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'net-ethernet-Mark-expected-switch-fall-throughs'
David S. Miller [Wed, 8 Aug 2018 00:54:21 +0000 (17:54 -0700)]
Merge branch 'net-ethernet-Mark-expected-switch-fall-throughs'

Gustavo A. R. Silva says:

====================
net: ethernet: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, this patchset aims
to add some annotations in order to mark switch cases where we are
expecting to fall through.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: ethernet: ti: cpts: mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:32:19 +0000 (18:32 -0500)]
net: ethernet: ti: cpts: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114813 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: tlan: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:31:46 +0000 (18:31 -0500)]
net: tlan: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 141440 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: sfc: falcon: mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:31:16 +0000 (18:31 -0500)]
net: sfc: falcon: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 1384500 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: ethernet: sxgbe: mark expected switch fall-throughs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:30:22 +0000 (18:30 -0500)]
net: ethernet: sxgbe: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 1357414 ("Missing break in switch")
Addresses-Coverity-ID: 1357415 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoqlge: mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:29:12 +0000 (18:29 -0500)]
qlge: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114811 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoqlcnic: Mark expected switch fall-througs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:28:20 +0000 (18:28 -0500)]
qlcnic: Mark expected switch fall-througs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 1410181 ("Missing break in switch")
Addresses-Coverity-ID: 1410184 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoqede: qede_fp: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:27:36 +0000 (18:27 -0500)]
qede: qede_fp: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 1384501 ("Missing break in switch")
Addresses-Coverity-ID: 1398869 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonetxen_nic: Mark expected switch fall-throughs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:26:49 +0000 (18:26 -0500)]
netxen_nic: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 1410182 ("Missing break in switch")
Addresses-Coverity-ID: 1410183 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoqed: qed_dev: Mark expected switch fall-throughs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:25:57 +0000 (18:25 -0500)]
qed: qed_dev: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that in this particular case, I replaced the code comments with
a proper "fall through" annotation, which is what GCC is expecting
to find.

Addresses-Coverity-ID: 114809 ("Missing break in switch")
Addresses-Coverity-ID: 114810 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5e: Mark expected switch fall-throughs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:25:26 +0000 (18:25 -0500)]
net/mlx5e: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114808 ("Missing break in switch")
Addresses-Coverity-ID: 114802 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agovxge: Mark expected switch fall-throughs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:24:38 +0000 (18:24 -0500)]
vxge: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114796 ("Missing break in switch")
Addresses-Coverity-ID: 114804 ("Missing break in switch")
Addresses-Coverity-ID: 114806 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoigbvf: netdev: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:24:04 +0000 (18:24 -0500)]
igbvf: netdev: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114801 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoigb: e1000_phy: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:23:31 +0000 (18:23 -0500)]
igb: e1000_phy: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114800 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoigb: e1000_82575: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:22:57 +0000 (18:22 -0500)]
igb: e1000_82575: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114799 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoigb_main: Mark expected switch fall-throughs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:22:22 +0000 (18:22 -0500)]
igb_main: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 200521 ("Missing break in switch")
Addresses-Coverity-ID: 114797 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx4/en_rx: Mark expected switch fall-throughs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:21:40 +0000 (18:21 -0500)]
net/mlx4/en_rx: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114794 ("Missing break in switch")
Addresses-Coverity-ID: 114795 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx4/mcg: Mark expected switch fall-throughs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:21:05 +0000 (18:21 -0500)]
net/mlx4/mcg: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114792 ("Missing break in switch")
Addresses-Coverity-ID: 114793 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoi40e_txrx: mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:20:27 +0000 (18:20 -0500)]
i40e_txrx: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114791 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoi40e_main: mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:19:42 +0000 (18:19 -0500)]
i40e_main: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114790 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:18:30 +0000 (18:18 -0500)]
net: hns3: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114789 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:17:50 +0000 (18:17 -0500)]
net: hns: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114788 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobe2net: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:17:08 +0000 (18:17 -0500)]
be2net: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114787 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: tulip: de4x5: mark expected switch fall-throughs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:16:07 +0000 (18:16 -0500)]
net: tulip: de4x5: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114784 ("Missing break in switch")
Addresses-Coverity-ID: 114785 ("Missing break in switch")
Addresses-Coverity-ID: 114786 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: tulip_core: mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:15:35 +0000 (18:15 -0500)]
net: tulip_core: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114782 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: thunderx: mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:15:32 +0000 (18:15 -0500)]
net: thunderx: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114781 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agocxgb3/l2t: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:14:18 +0000 (18:14 -0500)]
cxgb3/l2t: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114780 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agocxgb4/t4_hw: mark expected switch fall-throughs
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:13:44 +0000 (18:13 -0500)]
cxgb4/t4_hw: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114777 ("Missing break in switch")
Addresses-Coverity-ID: 114778 ("Missing break in switch")
Addresses-Coverity-ID: 114779 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agocxgb4/l2t: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:13:12 +0000 (18:13 -0500)]
cxgb4/l2t: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114910 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoliquidio: mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:13:05 +0000 (18:13 -0500)]
liquidio: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 143135 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: macb: Mark expected switch fall-through
Gustavo A. R. Silva [Tue, 7 Aug 2018 23:11:26 +0000 (18:11 -0500)]
net: macb: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>