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  1. 15 May, 2020 8 commits
    • Dan Murphy's avatar
      dt-bindings: dp83867: Convert DP83867 to yaml · 74ac28f1
      Dan Murphy authored 
      Convert the dp83867 binding to yaml.
Signed-off-by: default avatarDan Murphy <dmurphy@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      74ac28f1
    • Dan Murphy's avatar
      dt-bindings: net: dp83869: Update licensing info · e90b651e
      Dan Murphy authored 
      Add BSD 2 Clause to the licensing.

CC: Rob Herring <robh@kernel.org>
Signed-off-by: default avatarDan Murphy <dmurphy@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e90b651e
    • Luo bin's avatar
      hinic: update huawei ethernet driver maintainer · 3f044d26
      Luo bin authored 
      update huawei ethernet driver maintainer from aviad to Bin luo
Signed-off-by: default avatarLuo bin <luobin9@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3f044d26
    • Luo bin's avatar
      hinic: add set_ringparam ethtool_ops support · bcab6782
      Luo bin authored 
      support to change TX/RX queue depth with ethtool -G
Signed-off-by: default avatarLuo bin <luobin9@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      bcab6782
    • Jakub Kicinski's avatar
      devlink: refactor end checks in devlink_nl_cmd_region_read_dumpit · 5a46b062
      Jakub Kicinski authored 
      Clean up after recent fixes, move address calculations
around and change the variable init, so that we can have
just one start_offset == end_offset check.

Make the check a little stricter to preserve the -EINVAL
error if requested start offset is larger than the region
itself.
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5a46b062
    • David S. Miller's avatar
      Merge branch 'am65-cpsw-add-taprio-EST-offload-support' · c7ad3657
      David S. Miller authored 
      Murali Karicheri says:

====================
am65-cpsw: add taprio/EST offload support

AM65 CPSW h/w supports Enhanced Scheduled Traffic (EST – defined
in P802.1Qbv/D2.2 that later got included in IEEE 802.1Q-2018)
configuration. EST allows express queue traffic to be scheduled
(placed) on the wire at specific repeatable time intervals. In
Linux kernel, EST configuration is done through tc command and
the taprio scheduler in the net core implements a software only
scheduler (SCH_TAPRIO). If the NIC is capable of EST configuration,
user indicate "flag 2" in the command which is then parsed by
taprio scheduler in net core and indicate that the command is to
be offloaded to h/w. taprio then offloads the command to the
driver by calling ndo_setup_tc() ndo ops. This patch implements
ndo_setup_tc() as well as other changes required to offload EST
configuration to CPSW h/w

For more details please refer patch 2/2.

This series is based on original work done by Ivan Khoronzhuk
<ivan.khoronzhuk@linaro.org> to add taprio offload support to
AM65 CPSW 2G.

1. Example configuration 3 Gates

ifconfig eth0 down
ethtool -L eth0 tx 3

ethtool --set-priv-flags eth0 p0-rx-ptype-rrobin off

ifconfig eth0 192.168.2.20

tc qdisc replace dev eth0 parent root handle 100 taprio \
    num_tc 3 \
    map 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 \
    queues 1@0 1@1 1@2 \
    base-time 0000 \
    sched-entry S 4 125000 \
    sched-entry S 2 125000 \
    sched-entry S 1 250000 \
    flags 2

2. Example configuration 8 Gates

ifconfig eth0 down
ethtool -L eth0 tx 8

ethtool --set-priv-flags eth0 p0-rx-ptype-rrobin off

ifconfig eth0 192.168.2.20

tc qdisc replace dev eth0 parent root handle 100 taprio \
    num_tc 8 \
    map 0 1 2 3 4 5 6 7 0 0 0 0 0 0 0 0 \
    queues 1@0 1@1 1@2 1@3 1@4 1@5 1@6 1@7 \
    base-time 0000 \
    sched-entry S 80 125000 \
    sched-entry S 40 125000 \
    sched-entry S 20 125000 \
    sched-entry S 10 125000 \
    sched-entry S 08 125000 \
    sched-entry S 04 125000 \
    sched-entry S 02 125000 \
    sched-entry S 01 125000 \
    flags 2

Classify frames to particular priority using skbedit so that they land at
a specific queue in cpsw h/w which is Gated by the EST gate which opens based
on the sched-entry.

tc qdisc add dev eth0 clsact

In the below for example an iperf3 session with destination port 5007
will go through Q7.

tc filter add dev eth0 egress protocol ip prio 1 u32 match ip dport 5007 0xffff action skbedit priority 7

tc filter add dev eth0 egress protocol ip prio 1 u32 match ip dport 5006 0xffff action skbedit priority 6
tc filter add dev eth0 egress protocol ip prio 1 u32 match ip dport 5005 0xffff action skbedit priority 5
tc filter add dev eth0 egress protocol ip prio 1 u32 match ip dport 5004 0xffff action skbedit priority 4
tc filter add dev eth0 egress protocol ip prio 1 u32 match ip dport 5003 0xffff action skbedit priority 3
tc filter add dev eth0 egress protocol ip prio 1 u32 match ip dport 5002 0xffff action skbedit priority 2
tc filter add dev eth0 egress protocol ip prio 1 u32 match ip dport 5001 0xffff action skbedit priority 1

iperf3 -c 192.168.2.10 -u -l1470 -b32M -t1 -p 5007

Testing was done by capturing frames at the PC using wireshark and checking for
the bust interval or cycle time of UDP frames with a specific port number.
Verified that the distance between first frame of a burst (cycle-time) is 1
milli second and burst duration is within 125 usec based on the received packet
timestamp shown in wireshark packet display.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c7ad3657
    • Ivan Khoronzhuk's avatar
      ethernet: ti: am65-cpsw-qos: add TAPRIO offload support · 8127224c
      Ivan Khoronzhuk authored 
      AM65 CPSW h/w supports Enhanced Scheduled Traffic (EST – defined
in P802.1Qbv/D2.2 that later got included in IEEE 802.1Q-2018)
configuration. EST allows express queue traffic to be scheduled
(placed) on the wire at specific repeatable time intervals. In
Linux kernel, EST configuration is done through tc command and
the taprio scheduler in the net core implements a software only
scheduler (SCH_TAPRIO). If the NIC is capable of EST configuration,
user indicate "flag 2" in the command which is then parsed by
taprio scheduler in net core and indicate that the command is to
be offloaded to h/w. taprio then offloads the command to the
driver by calling ndo_setup_tc() ndo ops. This patch implements
ndo_setup_tc() to offload EST configuration to CPSW h/w.

Currently driver supports only SetGateStates operation. EST
operates on a repeating time interval generated by the CPTS EST
function generator. Each Ethernet port has a global EST fetch
RAM that can be configured as 2 buffers, each of 64 locations
or one large buffer of 128 locations. In 2 buffer configuration,
a ping pong mechanism is used to hold the active schedule (oper)
in one buffer and new (admin) command in the other. Each 22-bit
fetch command consists of a 14-bit fetch count (14 MSB’s) and an
8-bit priority fetch allow (8 LSB’s) that will be applied for the
fetch count time in wireside clocks. Driver process each of the
sched-entry in the offload command and update the fetch RAM.
Driver configures duration in sched-entry into the fetch count
and Gate mask into the priority fetch bits of the RAM. Then
configures the CPTS EST function generator to activate the
schedule. Currently driver supports only 2 buffer configuration
which means driver supports a max cycle time of ~8 msec.

CPSW supports a configurable number of priority queues (up to 8)
and needs to be switched to this mode from the default round
robin mode before EST can be offloaded. User configures
these through ethtool commands (-L for changing number of
queues and --set-priv-flags to disable round robin mode).
Driver doesn't enable EST if pf_p0_rx_ptype_rrobin privat flag
is set. The flag is common for all ports, and so can't be just
overridden by taprio configuration w/o user involvement.
Command fails if pf_p0_rx_ptype_rrobin is already set in the
driver.

Scheds (commands) configuration depends on interface speed so
driver translates the duration to the fetch count based on
link speed. Each schedule can be constructed with several
command entries in fetch RAM  depending on interval. For example
if each sched has timer interval < ~130us on 1000 Mb link then
each sched consumes one command and have 1:1 mapping. When
Ethernet link goes down, driver purge the configuration if link
is down for more than 1 second.

The patch allows to update the timer and scheds memory only if it's
really needed, and skip cases required the user to stop timer by
configuring only shceds memory.
Signed-off-by: default avatarIvan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: default avatarMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8127224c
    • Ivan Khoronzhuk's avatar
      ethernet: ti: am65-cpts: add routines to support taprio offload · ec008fa2
      Ivan Khoronzhuk authored 
      TAPRIO/EST offload support in CPSW2G requires EST scheduler
function enabled in CPTS. So this patch add a function to
set cycle time for EST scheduler.  It also add a function for
getting time in ns of PHC clock for taprio qdisc configuration.
Mostly to verify if timer update is needed or to get actual
state of oper/admin schedule.
Signed-off-by: default avatarIvan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: default avatarMurali Karicheri <m-karicheri2@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ec008fa2
  3. 14 May, 2020 20 commits
  5. 13 May, 2020 12 commits
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