Commits · 02cb24e9d97e3fca1ed61dc5661f128fb5c9300f · Kirill Smelkov / linux

15 Mar, 2017 39 commits

Merge branch 'dsa-check-out-of-range-ageing-time' · 02cb24e9

David S. Miller authored Mar 15, 2017

Vivien Didelot says:

====================
net: dsa: check out-of-range ageing time

The ageing time limits supported by DSA drivers vary depending on the
switch model. If a driver returns -ERANGE for out-of-range values, the
switchdev commit phase will fail with the following stacktrace:

    # brctl setageing br0 4
    [ 8530.082179] WARNING: CPU: 0 PID: 910 at net/switchdev/switchdev.c:291 switchdev_port_attr_set_now+0xbc/0xc0
    [ 8530.090679] br0: Commit of attribute (id=5) failed.
    [ 8530.094256] Modules linked in:
    [ 8530.096032] CPU: 0 PID: 910 Comm: kworker/0:4 Tainted: G        W       4.10.0 #361
    [ 8530.102412] Hardware name: Freescale Vybrid VF5xx/VF6xx (Device Tree)
    [ 8530.107571] Workqueue: events switchdev_deferred_process_work
    [ 8530.112039] Backtrace:
    [ 8530.113224] [<8010ca34>] (dump_backtrace) from [<8010cd3c>] (show_stack+0x20/0x24)
    [ 8530.119521]  r6:00000000 r5:80834da0 r4:80ca7e48 r3:8120ca3c
    [ 8530.123908] [<8010cd1c>] (show_stack) from [<8037ad40>] (dump_stack+0x24/0x28)
    [ 8530.129873] [<8037ad1c>] (dump_stack) from [<80118de4>] (__warn+0xf4/0x10c)
    [ 8530.135545] [<80118cf0>] (__warn) from [<80118e44>] (warn_slowpath_fmt+0x48/0x50)
    [ 8530.141760]  r9:00000000 r8:81252bec r7:80f19d90 r6:9dc3c000 r5:80ca7e7c r4:80834de8
    [ 8530.148235] [<80118e00>] (warn_slowpath_fmt) from [<80670b20>] (switchdev_port_attr_set_now+0xbc/0xc0)
    [ 8530.156240]  r3:9dc3c000 r2:80834de8
    [ 8530.158539]  r4:ffffffde
    [ 8530.159788] [<80670a64>] (switchdev_port_attr_set_now) from [<80670b44>] (switchdev_port_attr_set_deferred+0x20/0x6c)
    [ 8530.169118]  r7:806705a8 r6:9dc3c000 r5:80f19d90 r4:80f19d80
    [ 8530.173500] [<80670b24>] (switchdev_port_attr_set_deferred) from [<80670580>] (switchdev_deferred_process+0x50/0xe8)
    [ 8530.182742]  r6:80ca6000 r5:81252bec r4:80f19d80 r3:80670b24
    [ 8530.187115] [<80670530>] (switchdev_deferred_process) from [<80670930>] (switchdev_deferred_process_work+0x1c/0x24)
    [ 8530.196277]  r8:00000000 r7:9ffdc100 r6:8120ad6c r5:9ddefc00 r4:81252bf4 r3:9de343c0
    [ 8530.202756] [<80670914>] (switchdev_deferred_process_work) from [<8012f770>] (process_one_work+0x120/0x3b0)
    [ 8530.211231] [<8012f650>] (process_one_work) from [<8012fa70>] (worker_thread+0x70/0x534)
    [ 8530.218046]  r10:9ddefc00 r9:8120ad6c r8:80ca6038 r7:8120ad80 r6:81211f80 r5:9ddefc18
    [ 8530.224579]  r4:8120ad6c
    [ 8530.225830] [<8012fa00>] (worker_thread) from [<80135640>] (kthread+0x114/0x144)
    [ 8530.231955]  r10:9f4e9e94 r9:9de1fe58 r8:8012fa00 r7:9ddefc00 r6:9de1fdc0 r5:00000000
    [ 8530.238497]  r4:9de1fe40
    [ 8530.239750] [<8013552c>] (kthread) from [<80108cd8>] (ret_from_fork+0x14/0x3c)
    [ 8530.245679]  r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8013552c
    [ 8530.252234]  r4:9de1fdc0 r3:80ca6000
    [ 8530.254512] ---[ end trace 87475cc71b80ef73 ]---
    [ 8530.257852] br0: failed (err=-34) to set attribute (id=5)

This patchset fixes this by adding ageing_time_min and ageing_time_max
fields to the dsa_switch structure, which can optionally be set by a DSA
driver.

If provided, the DSA core will check for out-of-range values in the
SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME prepare phase and return -ERANGE
accordingly.

Finally set these limits in the mv88e6xxx driver.
====================
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

02cb24e9

net: dsa: mv88e6xxx: specify ageing time limits · 9ff74f24

Vivien Didelot authored Mar 15, 2017

Now that DSA has ageing time limits, specify them when registering a
switch so that out-of-range values are handled correctly by the core.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reported-by: Jason Cobham <jcobham@questertangent.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9ff74f24

net: dsa: check out-of-range ageing time value · 0f3da6af

Vivien Didelot authored Mar 15, 2017

If a DSA switch driver cannot program an ageing time value due to it
being out-of-range, switchdev will raise a stack trace before failing.

To fix this, add ageing_time_min and ageing_time_max members to the
dsa_switch in order for the switch drivers to optionally specify their
supported ageing time limits.

The DSA core will now check for provided ageing time limits and return
-ERANGE from the switchdev prepare phase if the value is out-of-range.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

0f3da6af

net: dsa: dsa_fastest_ageing_time return unsigned · e893de1b

Vivien Didelot authored Mar 15, 2017

The ageing time is defined as unsigned int, so make
dsa_fastest_ageing_time return an unsigned int instead of int.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

e893de1b

Merge branch 'mqprio-offload-more-info' · 1aed1814

David S. Miller authored Mar 15, 2017

Alexander Duyck says:

====================
Add support for passing more information in mqprio offload

This patch series lays the groundwork for future work to allow us to make
full use of the mqprio options when offloading them to hardware.

Currently when we specify the hardware offload for mqprio the queue
configuration is completely ignored and the hardware is only notified of
the total number of traffic classes.  The problem is this leads to multiple
issues, one specific issue being you can pass the queue configuration you
want and it is totally ignored by the hardware.

What I am planning to do is add support for "hw" values in the
configuration greater than 1.  So for example we might have one mode of
mqprio offload that uses 1 and only offloads the TC counts like we
currently do.  Then we might look at adding an option 2 which would factor
in the TCs and the queue count information. This way we can select between
the type of offload we actually want and existing drivers that don't
support this can just fall back to their legacy configuration.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

1aed1814

mqprio: Modify mqprio to pass user parameters via ndo_setup_tc. · 56f36acd

Amritha Nambiar authored Mar 15, 2017

The configurable priority to traffic class mapping and the user specified
queue ranges are used to configure the traffic class, overriding the
hardware defaults when the 'hw' option is set to 0. However, when the 'hw'
option is non-zero, the hardware QOS defaults are used.

This patch makes it so that we can pass the data the user provided to
ndo_setup_tc. This allows us to pull in the queue configuration if the
user requested it as well as any additional hardware offload type
requested by using a value other than 1 for the hw value.

Finally it also provides a means for the device driver to return the level
supported for the offload type via the qopt->hw value. Previously we were
just always assuming the value to be 1, in the future values beyond just 1
may be supported.
Signed-off-by: Amritha Nambiar <amritha.nambiar@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

56f36acd

mqprio: Change handling of hw u8 to allow for multiple hardware offload modes · 2026fecf

Alexander Duyck authored Mar 15, 2017

This patch is meant to allow for support of multiple hardware offload type
for a single device. There is currently no bounds checking for the hw
member of the mqprio_qopt structure. This results in us being able to pass
values from 1 to 255 with all being treated the same. On retreiving the
value it is returned as 1 for anything 1 or greater being set.

With this change we are currently adding limited bounds checking by
defining an enum and using those values to limit the reported hardware
offloads.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2026fecf

netxen_nic: remove redundant check if retries is zero · 5b769649

Colin Ian King authored Mar 15, 2017

At the end of the timeout loop, retries will always be zero so
the check for zero is redundant so remove it.  Also replace
printk with pr_err as recommended by checkpatch.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

5b769649

Merge branch 'stmmac-dma-ops-multiqueue' · a28453c0

David S. Miller authored Mar 15, 2017

Joao Pinto says:

====================
net: stmmac: prepare dma operations for multiple queues

As agreed with David Miller, this patch-set is the second of 3 to enable
multiple queues in stmmac.

This second one concentrates on dma operations adding functionalities as:
a) DMA Operation Mode configuration per channel and done in the multiple
queues configuration function
b) DMA IRQ enable and Disable by channel
c) DMA start and stop by channel
d) RX and TX ring length configuration by channel
e) RX and TX set tail pointer by channel
f) DMA Channel initialization broke into Channel comon, RX and TX
initialization
g) TSO being configured for all available channels
h) DMA interrupt treatment by channel
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

a28453c0