platform/kernel/linux-starfive.git
6 years agonet: phy: don't reschedule state machine when PHY is halted
Heiner Kallweit [Thu, 20 Sep 2018 20:34:25 +0000 (22:34 +0200)]
net: phy: don't reschedule state machine when PHY is halted

When being in state PHY_HALTED we don't have to reschedule the
state machine, phy_start() will start it again.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoDRIVERS: net: macsec: Fix multiple coding style issues
Romain Aviolat [Thu, 20 Sep 2018 19:33:08 +0000 (21:33 +0200)]
DRIVERS: net: macsec: Fix multiple coding style issues

This patch fixes a couple of issues highlighted by checkpatch.pl:

    * Missing a blank line after declarations
    * Alignment should match open parenthesis

Signed-off-by: Romain Aviolat <r.aviolat@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'bnx2x-enhancements'
David S. Miller [Fri, 21 Sep 2018 16:14:21 +0000 (09:14 -0700)]
Merge branch 'bnx2x-enhancements'

Shahed Shaikh says:

====================
bnx2x: enhancements

This series adds below changes -
- support for VF spoof-check configuration through .ndo_set_vf_spoofchk.
- workaround for MFW bug regarding unexpected bandwidth notifcation
  in single function mode.
- supply VF link status as part of get VF config handling.
====================

Signed-off-by: Shahed Shaikh <shahed.shaikh@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
6 years agobnx2x: Provide VF link status in ndo_get_vf_config
Shahed Shaikh [Thu, 20 Sep 2018 18:22:52 +0000 (11:22 -0700)]
bnx2x: Provide VF link status in ndo_get_vf_config

Provide current link status of VF in ndo_get_vf_config
handler.

Signed-off-by: Shahed Shaikh <Shahed.Shaikh@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnx2x: Ignore bandwidth attention in single function mode
Shahed Shaikh [Thu, 20 Sep 2018 18:22:51 +0000 (11:22 -0700)]
bnx2x: Ignore bandwidth attention in single function mode

This is a workaround for FW bug -
MFW generates bandwidth attention in single function mode, which
is only expected to be generated in multi function mode.
This undesired attention in SF mode results in incorrect HW
configuration and resulting into Tx timeout.

Signed-off-by: Shahed Shaikh <Shahed.Shaikh@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnx2x: Add VF spoof-checking configuration
Shahed Shaikh [Thu, 20 Sep 2018 18:22:50 +0000 (11:22 -0700)]
bnx2x: Add VF spoof-checking configuration

Add support for `ndo_set_vf_spoofchk' to allow PF control over
its VF spoof-checking configuration.

Signed-off-by: Shahed Shaikh <shahed.shaikh@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomISDN: remove redundant null pointer check before kfree_skb
zhong jiang [Thu, 20 Sep 2018 14:27:28 +0000 (22:27 +0800)]
mISDN: remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agovhost_net: add a missing error return
Dan Carpenter [Thu, 20 Sep 2018 10:01:59 +0000 (13:01 +0300)]
vhost_net: add a missing error return

We accidentally left out this error return so it leads to some use after
free bugs later on.

Fixes: 0a0be13b8fe2 ("vhost_net: batch submitting XDP buffers to underlayer sockets")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'kfree_skb-NULL'
David S. Miller [Fri, 21 Sep 2018 16:04:38 +0000 (09:04 -0700)]
Merge branch 'kfree_skb-NULL'

zhong jiang says:

====================
net: remove redundant null pointer check before kfree_skb

The issue is detected with the help of Coccinelle.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoipv6: remove redundant null pointer check before kfree_skb
zhong jiang [Thu, 20 Sep 2018 09:37:46 +0000 (17:37 +0800)]
ipv6: remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: cxgb3_main: remove redundant null pointer check before kfree_skb
zhong jiang [Thu, 20 Sep 2018 09:37:45 +0000 (17:37 +0800)]
net: cxgb3_main: remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: nci: remove redundant null pointer check before kfree_skb
zhong jiang [Thu, 20 Sep 2018 09:37:44 +0000 (17:37 +0800)]
net: nci: remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoipv4: remove redundant null pointer check before kfree_skb
zhong jiang [Thu, 20 Sep 2018 09:37:43 +0000 (17:37 +0800)]
ipv4: remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: cxgb3: remove redundant null pointer check before kfree_skb
zhong jiang [Thu, 20 Sep 2018 09:37:42 +0000 (17:37 +0800)]
net: cxgb3: remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: tap: remove redundant null pointer check before kfree_skb
zhong jiang [Thu, 20 Sep 2018 09:37:41 +0000 (17:37 +0800)]
net: tap: remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: neterion: remove redundant continue
zhong jiang [Thu, 20 Sep 2018 08:13:47 +0000 (16:13 +0800)]
net: neterion: remove redundant continue

The continue will not truely skip any code. hence it is safe to
remove it.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: amd: remove redundant continue
zhong jiang [Thu, 20 Sep 2018 08:07:47 +0000 (16:07 +0800)]
net: amd: remove redundant continue

The continue will not truely skip any code. hence it is safe to
remove it.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet_sched: change tcf_del_walker() to take idrinfo->lock
Vlad Buslov [Wed, 19 Sep 2018 23:37:29 +0000 (16:37 -0700)]
net_sched: change tcf_del_walker() to take idrinfo->lock

Action API was changed to work with actions and action_idr in concurrency
safe manner, however tcf_del_walker() still uses actions without taking a
reference or idrinfo->lock first, and deletes them directly, disregarding
possible concurrent delete.

Change tcf_del_walker() to take idrinfo->lock while iterating over actions
and use new tcf_idr_release_unsafe() to release them while holding the
lock.

And the blocking function fl_hw_destroy_tmplt() could be called when we
put a filter chain, so defer it to a work queue.

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
[xiyou.wangcong@gmail.com: heavily modify the code and changelog]
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'net-wean-netfilter-from-fib_nh'
David S. Miller [Fri, 21 Sep 2018 03:01:53 +0000 (20:01 -0700)]
Merge branch 'net-wean-netfilter-from-fib_nh'

David Ahern says:

====================
net: wean netfilter from fib_nh

Two netfilter modules reference fib_nh. In both cases the code is
only checking if a nexthop in a fib_info uses a specific device.
Both instances essentially duplicate code from __fib_validate_source,
so move that code into a helper and flip the netfilter modules to
use it.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonetfilter: nft_fib: Convert nft_fib4_eval to new dev helper
David Ahern [Thu, 20 Sep 2018 20:50:49 +0000 (13:50 -0700)]
netfilter: nft_fib: Convert nft_fib4_eval to new dev helper

Convert nft_fib4_eval to the new device checking helper and
remove the duplicate code.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonetfilter: rpfilter: Convert rpfilter_lookup_reverse to new dev helper
David Ahern [Thu, 20 Sep 2018 20:50:48 +0000 (13:50 -0700)]
netfilter: rpfilter: Convert rpfilter_lookup_reverse to new dev helper

Convert rpfilter_lookup_reverse to the new device checking helper
and remove the duplicate code.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/ipv4: Move device validation to helper
David Ahern [Thu, 20 Sep 2018 20:50:47 +0000 (13:50 -0700)]
net/ipv4: Move device validation to helper

Move the device matching check in __fib_validate_source to a helper and
export it for use by netfilter modules. Code move only; no functional
change intended.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet-next: mscc: remove unused ocelot_dev_gmii.h
Corentin Labbe [Wed, 19 Sep 2018 19:06:53 +0000 (19:06 +0000)]
net-next: mscc: remove unused ocelot_dev_gmii.h

The header ocelot_dev_gmii.h is unused since the inclusion of the driver.
It is unused, lets just remove it.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'mlxsw-Further-MC-awareness-configuration'
David S. Miller [Thu, 20 Sep 2018 14:46:02 +0000 (07:46 -0700)]
Merge branch 'mlxsw-Further-MC-awareness-configuration'

Ido Schimmel says:

====================
mlxsw: Further MC-awareness configuration

Petr says:

Due to an issue in Spectrum chips, when unicast traffic shares the same
queue as BUM traffic, and there is congestion, the BUM traffic is
admitted to the queue anyway, thus pushing out all UC traffic. In order
to give unicast traffic precedence over BUM traffic, multicast-aware
mode is now configured on all ports. Under MC-aware mode, egress TCs
8..15 are used for BUM traffic, which has its own dedicated pool.

This patch set improves the way that the MC pool and the higher-order
TCs are integrated into the system.

In patch #1, shaper at the higher TCs is configured to the same value
that it has by default. It's better to have the corresponding artifact
in the code explicitly.

The 8 following patches gradually extend the devlink handling in mlxsw
to support the extra TCs and the new MC pool.

Patch #2 changes the way that pools are indexed in mlxsw. Instead of
using (FW index, direction) tuple to identify the pool and the
associated cache, mlxsw now uses devlink index. This change is necessary
because the new pool 15 is not contiguously adjacent to the
currently-used pools 0..3, and because it's only relevant on egress.
Using devlink index relaxes the requirement for symmetry and adjacency
imposed by using FW indexing.

In patch #3, the assumption that number of ingress TCs matches that of
egress TCs is relaxed to allow exposition of egress TCs 8..15.

In patches #4, #5 and #6, support for infinite quotas is introduced.
Infinite quotas are reported as taking all the memory in the system, but
actually use a mechanism where the infinity is configured explicitly.

In patches #7 and #8, support for configuring static pool sizes in
introduced. Statically-sized pools have been supported for a while now,
but during initialization, all pools have dynamic size. The patches
allow there to be a mix of by-default static and dynamic pools.

In patches #9 and #10, pool 15 resp. per-priority MC quotas are
explicitly configured to be in sync with the current recommendation for
handling BUM traffic in Spectrum chips.

In the following 3 patches, an mlxsw-specific selftest is added to test
the MC-awareness configuration.

First in patches #11 and #12, lib.sh is extended with functions to
collect ethtool stats, and to manage port MTU.

Then in patch #13 the selftest itself is added.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoselftests: mlxsw: Add a test for UC behavior under MC flood
Petr Machata [Thu, 20 Sep 2018 06:21:36 +0000 (09:21 +0300)]
selftests: mlxsw: Add a test for UC behavior under MC flood

A so-called "MC-aware" mode has recently been enabled in mlxsw. In
MC-aware mode, BUM traffic is handled in a special way so that when a
switch is flooded with BUM, UC performance isn't unduly impacted.
Without enablement of this mode, a stream of BUM traffic can cause
sustained UC throughput drop in excess of 99 %.

Add a test for this behavior. Compare how much UC throughput degrades as
a stream of broadcast frames floods the switch. A minimal degradation is
tolerated to cover for glitches in traffic injection performance.

Signed-off-by: Petr Machata <petrm@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>
6 years agoselftests: forwarding: lib: Add mtu_set(), mtu_restore()
Petr Machata [Thu, 20 Sep 2018 06:21:35 +0000 (09:21 +0300)]
selftests: forwarding: lib: Add mtu_set(), mtu_restore()

Some selftests need to tweak MTU of an interface, and naturally should
at teardown restore the MTU back to the original value. Add two
functions to facilitate this MTU handling: mtu_set() to change MTU
value, and mtu_reset() to change it back to what it was before.

Signed-off-by: Petr Machata <petrm@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>
6 years agoselftests: forwarding: lib: Add ethtool_stats_get()
Petr Machata [Thu, 20 Sep 2018 06:21:34 +0000 (09:21 +0300)]
selftests: forwarding: lib: Add ethtool_stats_get()

Add a new service function to obtain ethtool counters.

Signed-off-by: Petr Machata <petrm@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>
6 years agomlxsw: spectrum_buffers: Tweak SBMM configuration
Petr Machata [Thu, 20 Sep 2018 06:21:33 +0000 (09:21 +0300)]
mlxsw: spectrum_buffers: Tweak SBMM configuration

The SBMM register configures shared buffer allocation and settings for
MC packets according to switch priority. The recommended values are no
reserved buffer and alpha of 1/4, which corresponds to buf_max of 6.
Update mlxsw_sp_sb_mms accordingly.

Signed-off-by: Petr Machata <petrm@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>
6 years agomlxsw: spectrum_buffers: Configure MC pool
Petr Machata [Thu, 20 Sep 2018 06:21:32 +0000 (09:21 +0300)]
mlxsw: spectrum_buffers: Configure MC pool

Pool 15 (indexed as 8) is dedicated to MC traffic. Its configuration has
been kept at default, because the table-based configuration wasn't
expressive enough to allow the explicit configuration.

Now that the configuration of pool 15 can be described, do so. The MC
pool should have infinite size, infinite per-TC quota, and per-port
limit of 90K.

Signed-off-by: Petr Machata <petrm@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>
6 years agomlxsw: spectrum_buffers: Allow configuration of static pools
Petr Machata [Thu, 20 Sep 2018 06:21:31 +0000 (09:21 +0300)]
mlxsw: spectrum_buffers: Allow configuration of static pools

Some pools configured through the sb_pm entries may have by default
static size. The MC pool is now not explicitly configured, however it
gets configured as static implicitly by 0-initializing sb->prs, and a
follow-up patch adds an explicit configuration to the same effect.

To support this, pass max_buff taken from sb_pm and sb_cm entries
through cell conversion before handing it to mlxsw_sp_sb_pm_write(), if
the pool that the sb_pm entry configures is statically-sized.

To keep current behavior, update mlxsw_sp_sb_cms_egress[] to denote
buffer sizes in bytes (assuming Spectrum 1 cell sizes, which the
original code assumed as well) instead of cells. Note that a follow-up
patch changes this to infinite size.

Also tweak a comment at SBMM configuration to remain true now that
statically-sized pools exist.

Signed-off-by: Petr Machata <petrm@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>
6 years agomlxsw: spectrum_buffers: Pass SBPM min_size in cells
Petr Machata [Thu, 20 Sep 2018 06:21:30 +0000 (09:21 +0300)]
mlxsw: spectrum_buffers: Pass SBPM min_size in cells

The SBPM register configures the shared buffer allocation and
configuration per port and pool. The min_buff value is the buffer size
dedicated to this single function, and is configured in cells.
Currently, all sb_pm entries have 0 for min_buff, and therefore the
actual unit is immaterial. However, in a follow-up patch we want to add
entries with non-zero minimum.

Therefore pass the min_buff from the sb_pm table through the cell
conversion before handing it over to mlxsw_sp_sb_pm_write().

Signed-off-by: Petr Machata <petrm@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>
6 years agomlxsw: spectrum_buffers: Allow an infinite maximum for per-TC pool limit
Petr Machata [Thu, 20 Sep 2018 06:21:29 +0000 (09:21 +0300)]
mlxsw: spectrum_buffers: Allow an infinite maximum for per-TC pool limit

The SBCM register configures the shared buffer configuration according
to port and TC. So far all pools have had a dynamic size, where the
infinite size is easy to express by using max_buff of 0xff. However the
MC pool should be configured with static size, and the infinite size
thus needs to be set using the field SBCM.infi_max.

Therefore add the field infi_max to the SBCM register and to
mlxsw_reg_sbcm_pack(). Extend mlxsw_sp_sb_cm_write() to handle infinite
sizes as well. Report infinite pool limits as if the limit actually were
the total shared buffer size.

Signed-off-by: Petr Machata <petrm@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>
6 years agomlxsw: spectrum_buffers: Allow pools of infinite size
Petr Machata [Thu, 20 Sep 2018 06:21:28 +0000 (09:21 +0300)]
mlxsw: spectrum_buffers: Allow pools of infinite size

The MC pool should have an infinite size (i.e. no quota).

To that end, add infi_size to the SBPR register and extend
mlxsw_reg_sbpr_pack(). Also add MLXSW_SP_SB_INFI to denote
buffers that should have an infinite size.

Change mlxsw_sp_sb_pr_write() to take as parameter byte size,
instead of cell size, and add the special handling of infinite
buffers. Report pools with infinite size as if they actually
take the full shared buffer size.

Signed-off-by: Petr Machata <petrm@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>
6 years agomlxsw: spectrum_buffers: Keep shared buffer size in mlxsw_sp_sb
Petr Machata [Thu, 20 Sep 2018 06:21:27 +0000 (09:21 +0300)]
mlxsw: spectrum_buffers: Keep shared buffer size in mlxsw_sp_sb

Entities of infinite size will be reported as if they had the maximum
size allowed by the chip. To that end, keep track of maximum shared
buffer size in mlxsw_sp->sb.

Signed-off-by: Petr Machata <petrm@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>
6 years agomlxsw: spectrum_buffers: Split TC_COUNT into ingress and egress
Petr Machata [Thu, 20 Sep 2018 06:21:26 +0000 (09:21 +0300)]
mlxsw: spectrum_buffers: Split TC_COUNT into ingress and egress

Current code assumes that ingress and egress has the same number of
traffic classes. Since the introduction of MC-aware mode that assumption
hasn't held anymore, and there have been 16 TCs on the egress as opposed
to 8 on ingress.

Break the assumption of symmetry by splitting the artifacts related to
shared-buffer TC counting to ingress and egress parts.

Signed-off-by: Petr Machata <petrm@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>
6 years agomlxsw: spectrum_buffers: Use devlink pool indices throughout
Petr Machata [Thu, 20 Sep 2018 06:21:25 +0000 (09:21 +0300)]
mlxsw: spectrum_buffers: Use devlink pool indices throughout

Currently, mlxsw assumes that each ingress pool has its egress
counterpart, and that pool index for purposes of caching matches the
index with which the hardware should be configured. As we want to expose
the MC pool, both of these assumptions break.

Instead, maintain the pool index as long as possible. Unify ingress and
egress caches and use the pool index as cache index as well. Only
translate to FW pool numbering when actually packing the registers. This
simplifies things considerably, as the pool index is the only quantity
necessary to uniquely identify a pool, and the pool/direction split is
not necessary until firmware is talked to.

To support the mapping between pool indices and pool numbers and
directions, which is not neatly mathematical anymore, introduce a pool
descriptor table, indexed by pool index, to facilitate the translation.

Include the MC pool in the descriptor table as well, so that it can be
referenced from mlxsw_sp_sb_cms_egress.

Signed-off-by: Petr Machata <petrm@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>
6 years agomlxsw: spectrum: Init shaper for TCs 8..15
Petr Machata [Thu, 20 Sep 2018 06:21:24 +0000 (09:21 +0300)]
mlxsw: spectrum: Init shaper for TCs 8..15

With introduction of MC-aware mode to mlxsw, it became necessary to
configure TCs above 7 as well. There is now code in mlxsw to disable ETS
for these higher classes, but disablement of max shaper was neglected.

By default, max shaper is currently disabled to begin with, so the
problem is just cosmetic. However, for symmetry, do like we do for ETS
configuration, and call mlxsw_sp_port_ets_maxrate_set() for both TC i
and i + 8.

Signed-off-by: Petr Machata <petrm@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>
6 years agoisdn/hisax: Remove unnecessary parenthesis
Nathan Chancellor [Thu, 20 Sep 2018 04:05:23 +0000 (21:05 -0700)]
isdn/hisax: Remove unnecessary parenthesis

Clang warns when more than one set of parentheses are used for single
conditional statements:

drivers/isdn/hisax/w6692.c:627:30: warning: equality comparison with
extraneous parentheses [-Wparentheses-equality]
                if ((cs->dc.w6692.ph_state == W_L1IND_DRD)) {
                     ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
drivers/isdn/hisax/w6692.c:627:30: note: remove extraneous parentheses
around the comparison to silence this warning
                if ((cs->dc.w6692.ph_state == W_L1IND_DRD)) {
                    ~                      ^             ~
drivers/isdn/hisax/w6692.c:627:30: note: use '=' to turn this equality
comparison into an assignment
                if ((cs->dc.w6692.ph_state == W_L1IND_DRD)) {
                                           ^~
                                           =
1 warning generated.

Remove the parentheses to silence this warning.

Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoatl1: remove set but not used variable 'advertising'
YueHaibing [Thu, 20 Sep 2018 02:41:30 +0000 (02:41 +0000)]
atl1: remove set but not used variable 'advertising'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/ethernet/atheros/atlx/atl1.c: In function 'atl1_set_link_ksettings':
drivers/net/ethernet/atheros/atlx/atl1.c:3280:6: warning:
 variable 'advertising' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoe1000: remove set but not used variable 'txb2b'
YueHaibing [Thu, 20 Sep 2018 02:04:38 +0000 (02:04 +0000)]
e1000: remove set but not used variable 'txb2b'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/ethernet/intel/e1000/e1000_main.c: In function 'e1000_watchdog':
drivers/net/ethernet/intel/e1000/e1000_main.c:2436:9: warning:
 variable 'txb2b' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: toshiba: remove a redundant local variable 'index_specified'
zhong jiang [Thu, 20 Sep 2018 01:56:05 +0000 (09:56 +0800)]
net: toshiba: remove a redundant local variable 'index_specified'

The local variable 'index_specified' is never used after being assigned.
hence it should be redundant adn can be removed.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonfp: provide a better warning when ring allocation fails
Jakub Kicinski [Wed, 19 Sep 2018 21:42:50 +0000 (14:42 -0700)]
nfp: provide a better warning when ring allocation fails

NFP supports fairly enormous ring sizes (up to 256k descriptors).
In commit 466271703867 ("nfp: use kvcalloc() to allocate SW buffer
descriptor arrays") we have started using kvcalloc() functions to
make sure the allocation of software state arrays doesn't hit
the MAX_ORDER limit.  Unfortunately, we can't use virtual mappings
for the DMA region holding HW descriptors.  In case this allocation
fails instead of the generic (and fairly scary) warning/splat in
the logs print a helpful message explaining what happened and
suggesting how to fix it.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agor8169: remove duplicated RTL8169s PHY initialization steps
Heiner Kallweit [Wed, 19 Sep 2018 20:02:11 +0000 (22:02 +0200)]
r8169: remove duplicated RTL8169s PHY initialization steps

Setting register 0x82 to value 01 is done a few lines before for all
chip versions <= 06 anyway. And setting PHY register 0x0b to value 00
is done at the end of rtl8169s_hw_phy_config() already. So we can
remove this.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agor8169: simplify RTL8169 PHY initialization
Heiner Kallweit [Wed, 19 Sep 2018 20:00:24 +0000 (22:00 +0200)]
r8169: simplify RTL8169 PHY initialization

PCI_LATENCY_TIMER is ignored on PCIe, therefore we have to do this
for the PCI chips (version <= 06) only. Also we can move setting
PCI_CACHE_LINE_SIZE.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ibm: remove redundant local variables 'act_nr_of_entries' and 'act_pages'
zhong jiang [Wed, 19 Sep 2018 14:30:49 +0000 (22:30 +0800)]
net: ibm: remove redundant local variables 'act_nr_of_entries' and 'act_pages'

That local variable are never used after being assigned.
hence it should be redundant and can be removed.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ibm: remove a redundant local variable 'k'
zhong jiang [Wed, 19 Sep 2018 14:23:15 +0000 (22:23 +0800)]
net: ibm: remove a redundant local variable 'k'

The local variable 'k' is never used after being assigned.
hence it should be redundant adn can be removed.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoipv6: Allow the l3mdev to be a loopback
Robert Shearman [Wed, 19 Sep 2018 12:56:53 +0000 (13:56 +0100)]
ipv6: Allow the l3mdev to be a loopback

There is no way currently for an IPv6 client connect using a loopback
address in a VRF, whereas for IPv4 the loopback address can be added:

    $ sudo ip addr add dev vrfred 127.0.0.1/8
    $ sudo ip -6 addr add ::1/128 dev vrfred
    RTNETLINK answers: Cannot assign requested address

So allow ::1 to be configured on an L3 master device. In order for
this to be usable ip_route_output_flags needs to not consider ::1 to
be a link scope address (since oif == l3mdev and so it would be
dropped), and ipv6_rcv needs to consider the l3mdev to be a loopback
device so that it doesn't drop the packets.

Signed-off-by: Robert Shearman <rshearma@vyatta.att-mail.com>
Signed-off-by: Mike Manning <mmanning@vyatta.att-mail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'hns3-fixes'
David S. Miller [Thu, 20 Sep 2018 04:20:23 +0000 (21:20 -0700)]
Merge branch 'hns3-fixes'

Salil Mehta says:

====================
Fixes, cleanups & minor additions to HNS3 driver

This patch-set present some fixes, cleanups to the HNS3 PF and VF driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Fix parameter type for q_id in hclge_tm_q_to_qs_map_cfg()
Jian Shen [Wed, 19 Sep 2018 17:29:58 +0000 (18:29 +0100)]
net: hns3: Fix parameter type for q_id in hclge_tm_q_to_qs_map_cfg()

So far all the places calling hclge_tm_q_to_qs_map_cfg() are assigning
an u16 type value to "q_id", and in the processing of
hclge_tm_q_to_qs_map_cfg(), it also converts the "q_id" to le16.

The max tqp number for pf can be more than 256, we should use "u16" to
store the queue id, instead of "u8", which may cause data lost.

Fixes: 848440544b41 ("net: hns3: Add support of TX Scheduler & Shaper to HNS3 driver")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Fix client initialize state issue when roce client initialize failed
Jian Shen [Wed, 19 Sep 2018 17:29:57 +0000 (18:29 +0100)]
net: hns3: Fix client initialize state issue when roce client initialize failed

When roce is loaded before nic, the roce client will not be initialized
until nic client is initialized, but roce init flag is set before it.
Furthermore, in this case of nic initialized success and roce failed,
the nic init flag is not set, and roce init flag is not cleared.

This patch fixes it by set init flag only after the client is initialized
successfully.

Fixes: e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Clear client pointer when initialize client failed or unintialize finished
Jian Shen [Wed, 19 Sep 2018 17:29:56 +0000 (18:29 +0100)]
net: hns3: Clear client pointer when initialize client failed or unintialize finished

If initialize client failed or finish uninitializing client, we should
clear the client pointer. It may cause unexpected result when use
uninitialized client. Meanwhile, we also should check whether client
exist when uninitialize it.

Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Fix cmdq registers initialization issue for vf
Jian Shen [Wed, 19 Sep 2018 17:29:55 +0000 (18:29 +0100)]
net: hns3: Fix cmdq registers initialization issue for vf

According to hardware's description, the head pointer register should
be written before the tail pointer register while initializing the vf
command queue. Otherwise, it may trigger an interrupt even though there
is no command received.

Fixes: fedd0c15d288 ("net: hns3: Add HNS3 VF IMP(Integrated Management Proc) cmd interface")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Fix for setting speed for phy failed problem
Fuyun Liang [Wed, 19 Sep 2018 17:29:54 +0000 (18:29 +0100)]
net: hns3: Fix for setting speed for phy failed problem

The function of genphy_read_status is that reading phy information
from HW and using these information to update SW variable. If user
is using ethtool to setting the speed of phy and service task is calling
by hclge_get_mac_phy_link, the result of speed setting is uncertain.
Because ethtool cmd will modified phydev and hclge_get_mac_phy_link also
will modified phydev.

Because phy state machine will update phy link periodically, we can
just use phydev->link to check the link status. This patch removes
function call of genphy_read_status. To ensure accuracy, this patch
adds a phy state check. If phy state is not PHY_RUNNING, we consider
link is down. Because in some scenarios, phydev->link may be link up,
but phy state is not PHY_RUNNING. This is just an intermediate state.
In fact, the link is not ready yet.

Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Check hdev state when getting link status
Peng Li [Wed, 19 Sep 2018 17:29:53 +0000 (18:29 +0100)]
net: hns3: Check hdev state when getting link status

By default, HW link status is up. If hclge_update_link_status is called
before net up, driver will print "link up". It is not suitable. hdev
state check is needed when getting link status.

Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Fixes: e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Set STATE_DOWN bit of hdev state when stopping net
Fuyun Liang [Wed, 19 Sep 2018 17:29:52 +0000 (18:29 +0100)]
net: hns3: Set STATE_DOWN bit of hdev state when stopping net

We clear STATE_DOWN bit of hdev state when starting net, but do not set
it again when stopping net. It causes that the net is down, but hdev state
is still up. STATE_DOWN bit of hdev state should be set when stopping net.

Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Fixes: e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Add support for hns3_nic_netdev_ops.ndo_do_ioctl
Xi Wang [Wed, 19 Sep 2018 17:29:51 +0000 (18:29 +0100)]
net: hns3: Add support for hns3_nic_netdev_ops.ndo_do_ioctl

This patch adds the .ndo_do_ioctl net_device_ops operation to support
the PHY MII ioctl for PF driver.

Fixes: 76ad4f0ee747 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC")
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Remove packet statistics of public
Peng Li [Wed, 19 Sep 2018 17:29:50 +0000 (18:29 +0100)]
net: hns3: Remove packet statistics of public

All pf have permission to read packet statistics of public in hardware,
but the read operation will clear registers which cause statistical
inaccuracy.

This patch removes all packet statistics of public.

Signed-off-by: Junxin Chen <chenjunxin1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Remove tx budget to clean more TX descriptors in a napi
Peng Li [Wed, 19 Sep 2018 17:29:49 +0000 (18:29 +0100)]
net: hns3: Remove tx budget to clean more TX descriptors in a napi

The the actual Tx work is minimal, driver can clean up as more
Tx descriptors as possible in a irq.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Add unlikely for buf_num check
Peng Li [Wed, 19 Sep 2018 17:29:48 +0000 (18:29 +0100)]
net: hns3: Add unlikely for buf_num check

This patch adds unlikely for buf_num check.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Add default irq affinity
Peng Li [Wed, 19 Sep 2018 17:29:47 +0000 (18:29 +0100)]
net: hns3: Add default irq affinity

All irq will float to cpu0 if do not set irq affinity.
This patch adds default irq affinity in hns3 driver, users can
also change the irq affinity in OS.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sun: fix return type of ndo_start_xmit function
YueHaibing [Wed, 19 Sep 2018 11:21:32 +0000 (19:21 +0800)]
net: sun: fix return type of ndo_start_xmit function

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, but the implementation in this
driver returns an 'int'.

Found by coccinelle.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: amd: fix return type of ndo_start_xmit function
YueHaibing [Wed, 19 Sep 2018 10:50:17 +0000 (18:50 +0800)]
net: amd: fix return type of ndo_start_xmit function

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.

Found by coccinelle.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: broadcom: fix return type of ndo_start_xmit function
YueHaibing [Wed, 19 Sep 2018 10:45:12 +0000 (18:45 +0800)]
net: broadcom: fix return type of ndo_start_xmit function

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.

Found by coccinelle.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: xilinx: fix return type of ndo_start_xmit function
YueHaibing [Wed, 19 Sep 2018 10:32:40 +0000 (18:32 +0800)]
net: xilinx: fix return type of ndo_start_xmit function

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.

Found by coccinelle.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: toshiba: fix return type of ndo_start_xmit function
YueHaibing [Wed, 19 Sep 2018 10:23:39 +0000 (18:23 +0800)]
net: toshiba: fix return type of ndo_start_xmit function

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.

Found by coccinelle.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: marvell: fix return type of ndo_start_xmit function
YueHaibing [Wed, 19 Sep 2018 10:19:26 +0000 (18:19 +0800)]
net: marvell: fix return type of ndo_start_xmit function

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.

Found by coccinelle.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'phylink-ensure-the-carrier-is-off-when-starting-phylink'
David S. Miller [Thu, 20 Sep 2018 04:15:02 +0000 (21:15 -0700)]
Merge branch 'phylink-ensure-the-carrier-is-off-when-starting-phylink'

Antoine Tenart says:

====================
net: phy: phylink: ensure the carrier is off when starting phylink

Following the discussion we had regarding the phylink issue related to
the carrier link state not being off when starting phylink, I sent a fix
patch a few days ago for the PPv2 driver:
https://lkml.org/lkml/2018/9/14/633

The idea was to send a patch which could go to the stable branches, but
a better solution would be to directly call netif_carrier_off() from
within phylink_start(). This is the aim of this series.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvneta: do not explicitly set the carrier state in open
Antoine Tenart [Wed, 19 Sep 2018 09:39:33 +0000 (11:39 +0200)]
net: mvneta: do not explicitly set the carrier state in open

This patch removes the explicit call to netif_carrier_off() in
mvneta_open() as this is already handled in phylink_start().

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: do not explicitly set the carrier state in open
Antoine Tenart [Wed, 19 Sep 2018 09:39:32 +0000 (11:39 +0200)]
net: mvpp2: do not explicitly set the carrier state in open

This patch removes the explicit call to netif_carrier_off() in PPv2's
open() path, as this is now handled in phylink_start().

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: phylink: ensure the carrier is off when starting phylink
Antoine Tenart [Wed, 19 Sep 2018 09:39:31 +0000 (11:39 +0200)]
net: phy: phylink: ensure the carrier is off when starting phylink

Phylink made an assumption about the carrier state being down when
calling phylink_start(). If this assumption isn't satisfied, the
internal phylink state could misbehave and a net device could end up not
being functional.

This patch fixes this by explicitly calling netif_carrier_off() in
phylink_start().

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'net-mvpp2-improve-the-interrupt-usage'
David S. Miller [Thu, 20 Sep 2018 04:09:55 +0000 (21:09 -0700)]
Merge branch 'net-mvpp2-improve-the-interrupt-usage'

Antoine Tenart says:

====================
net: mvpp2: improve the interrupt usage

This series aims to improve the interrupts descriptions and usage in the
Marvell PPv2 driver.

- Before the series interrupts were named after their s/w usage,
  which in fact can be configured. The series rename all those
  interrupts and add a description of the ones left over.

- In PPv2 the interrupts are mapped to vectors. Those vectors were
  directly mapped to a given CPU, and per-cpu accesses were done. While
  this worked on our cases, the registers accesses mapped to the vectors
  are not actually linked to a given CPU. They instead are linked to
  what is called a "s/w thread". The series modify this so that the s/w
  threads are used instead of the CPU numbers, by adding an indirection.
  This means we now can have systems with more CPUs than s/w threads.

This is based on today's net-next, and was tested on various boards
using both versions of the PPv2 engine.

Two more patches will be coming, to update the device trees describing a
PPv2 engine. The patches are ready, but will go through a different
tree. I'll send them once this series will be accepted. This is not an
issue as the PPv2 driver keeps the dt bindings backward compatibility.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: rename mvpp2_percpu function to mvpp2_thread
Antoine Tenart [Wed, 19 Sep 2018 09:27:11 +0000 (11:27 +0200)]
net: mvpp2: rename mvpp2_percpu function to mvpp2_thread

As the mvpp2_percpu_read/write/... functions aren't really per-cpu but
per s/w thread, rename them to include 'thread' instead of 'percpu'.
This is a cosmetic patch.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: handle cases where more CPUs are available than s/w threads
Antoine Tenart [Wed, 19 Sep 2018 09:27:10 +0000 (11:27 +0200)]
net: mvpp2: handle cases where more CPUs are available than s/w threads

The Marvell PPv2 network controller has 9 internal threads. The driver
works fine when there are less CPUs available than threads. This isn't
true if more CPUs are available. As this is a valid use case, handle
this particular case.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: map the CPUs to threads
Antoine Tenart [Wed, 19 Sep 2018 09:27:09 +0000 (11:27 +0200)]
net: mvpp2: map the CPUs to threads

This patch maps all uses of the CPU to threads. All this_cpu calls are
replaced, and all smp_processor_id() calls are wrapped into the
indirection.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: do not use the CPU number to access the per-thread registers
Antoine Tenart [Wed, 19 Sep 2018 09:27:08 +0000 (11:27 +0200)]
net: mvpp2: do not use the CPU number to access the per-thread registers

This patch reworks the Marvell PPv2 driver to stop using directly the
CPU number to access per-thread registers.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: make mvpp2_read_relaxed static
Antoine Tenart [Wed, 19 Sep 2018 09:27:07 +0000 (11:27 +0200)]
net: mvpp2: make mvpp2_read_relaxed static

In the Marvell PPv2 driver the mvpp2_read_relaxed function is only used
in a single file. Make it static and remove its prototype from the
header.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: make the per-cpu helpers static
Antoine Tenart [Wed, 19 Sep 2018 09:27:06 +0000 (11:27 +0200)]
net: mvpp2: make the per-cpu helpers static

The Marvell PPv2 driver has per-cpu functions. As they only are used in
the main file, make them static and remove their prototype from the
header.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: cpu should always be unsigned
Antoine Tenart [Wed, 19 Sep 2018 09:27:05 +0000 (11:27 +0200)]
net: mvpp2: cpu should always be unsigned

Updates the PPv2 driver so that all CPU variables are unsigned, as it
makes no sense to have a negative CPU number. This patch is cosmetic.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: fix the number of queues per cpu for PPv2.2
Antoine Tenart [Wed, 19 Sep 2018 09:27:04 +0000 (11:27 +0200)]
net: mvpp2: fix the number of queues per cpu for PPv2.2

The Marvell PPv2.2 engine only has 8 Rx queues per CPU, while PPv2.1 has
16 of them. This patch updates the code so that the Rx queues mask width
is selected given the version of the network controller used.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: do not update the queue mode while probing
Antoine Tenart [Wed, 19 Sep 2018 09:27:03 +0000 (11:27 +0200)]
net: mvpp2: do not update the queue mode while probing

This patch updates the probing function so that the queue mode isn't
updated while probing, as the driver would silently end up using a
configuration not wanted by the user. The patch adds an extra check to
validate the chosen queue mode instead, and the driver will fail to
probe if the configuration is invalid.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoDocumentation/bindings: net: marvell-pp2: update the IRQs description
Antoine Tenart [Wed, 19 Sep 2018 09:27:02 +0000 (11:27 +0200)]
Documentation/bindings: net: marvell-pp2: update the IRQs description

This patch updates the interrupts part of the Marvell PPv2 driver
bindings documentation, to keep it in sync with the driver.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: rename the IRQs to match the hardware
Antoine Tenart [Wed, 19 Sep 2018 09:27:01 +0000 (11:27 +0200)]
net: mvpp2: rename the IRQs to match the hardware

This patch renames the IRQs in the Marvell PPv2 driver as their current
names match the way they are used in software. But this will change in
the future, and those IRQs have nothing to do with Rx/Tx interrupts
(this can be configured). The new binding also describe more interrupts
as some where left out.

The old binding support is kept for backward compatibility.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvpp2: increase the number of s/w threads to 9
Antoine Tenart [Wed, 19 Sep 2018 09:27:00 +0000 (11:27 +0200)]
net: mvpp2: increase the number of s/w threads to 9

This patch sets the number of s/w threads to 9, its maximum value,
instead of 8. This is not a fix as only 4 of the s/w threads were used
so far, but more could be used in the future.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoravb: remove tx buffer addr 4byte alilgnment restriction for R-Car Gen3
Kazuya Mizuguchi [Wed, 19 Sep 2018 08:06:21 +0000 (10:06 +0200)]
ravb: remove tx buffer addr 4byte alilgnment restriction for R-Car Gen3

This patch sets from two descriptor to one descriptor because R-Car Gen3
does not have the 4 bytes alignment restriction of the transmission buffer.

Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'phy_stop-synchronous'
David S. Miller [Thu, 20 Sep 2018 04:06:46 +0000 (21:06 -0700)]
Merge branch 'phy_stop-synchronous'

Heiner Kallweit says:

====================
net: phy: make phy_stop() synchronous

There have been few not that successful attempts in the past to make
phy_stop() a synchronous call instead of just changing the state.
Patch 1 of this series addresses an issue which prevented this change.
At least for me it works fine now. Would appreciate if Geert could
re-test as well that suspend doesn't throw an error.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: call state machine synchronously in phy_stop
Heiner Kallweit [Tue, 18 Sep 2018 19:56:32 +0000 (21:56 +0200)]
net: phy: call state machine synchronously in phy_stop

phy_stop() may be called e.g. when suspending, therefore all needed
actions should be performed synchronously. Therefore add a synchronous
call to the state machine.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: linkwatch: add check for netdevice being present to linkwatch_do_dev
Heiner Kallweit [Tue, 18 Sep 2018 19:55:36 +0000 (21:55 +0200)]
net: linkwatch: add check for netdevice being present to linkwatch_do_dev

When bringing down the netdevice (incl. detaching it) and calling
netif_carrier_off directly or indirectly the latter triggers an
asynchronous linkwatch event.
This linkwatch event eventually may fail to access chip registers in
the ndo_get_stats/ndo_get_stats64 callback because the device isn't
accessible any longer, see call trace in [0].

To prevent this scenario don't check for IFF_UP only, but also make
sure that the netdevice is present.

[0] https://lists.openwall.net/netdev/2018/03/15/62

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'net-Use-FIELD_SIZEOF-directly-instead-of-reimplementing-its-function'
David S. Miller [Thu, 20 Sep 2018 03:58:05 +0000 (20:58 -0700)]
Merge branch 'net-Use-FIELD_SIZEOF-directly-instead-of-reimplementing-its-function'

zhong jiang says:

====================
net: Use FIELD_SIZEOF directly instead of reimplementing its function

The issue is detected with the help of Coccinelle.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ti: Use FIELD_SIZEOF directly instead of reimplementing its function
zhong jiang [Wed, 19 Sep 2018 11:32:14 +0000 (19:32 +0800)]
net: ti: Use FIELD_SIZEOF directly instead of reimplementing its function

FIELD_SIZEOF is defined as a macro to calculate the specified value. Therefore,
We prefer to use the macro rather than calculating its value.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: qede: Use FIELD_SIZEOF directly instead of reimplementing its function
zhong jiang [Wed, 19 Sep 2018 11:32:13 +0000 (19:32 +0800)]
net: qede: Use FIELD_SIZEOF directly instead of reimplementing its function

FIELD_SIZEOF is defined as a macro to calculate the specified value. Therefore,
We prefer to use the macro rather than calculating its value.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: core: Use FIELD_SIZEOF directly instead of reimplementing its function
zhong jiang [Wed, 19 Sep 2018 11:32:12 +0000 (19:32 +0800)]
net: core: Use FIELD_SIZEOF directly instead of reimplementing its function

FIELD_SIZEOF is defined as a macro to calculate the specified value. Therefore,
We prefer to use the macro rather than calculating its value.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: Use FIELD_SIZEOF directly instead of reimplementing its function
zhong jiang [Wed, 19 Sep 2018 11:32:11 +0000 (19:32 +0800)]
net: sched: Use FIELD_SIZEOF directly instead of reimplementing its function

FIELD_SIZEOF is defined as a macro to calculate the specified value. Therefore,
We prefer to use the macro rather than calculating its value.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: iucv: Use FIELD_SIZEOF directly instead of reimplementing its function
zhong jiang [Wed, 19 Sep 2018 11:32:10 +0000 (19:32 +0800)]
net: iucv: Use FIELD_SIZEOF directly instead of reimplementing its function

FIELD_SIZEOF is defined as a macro to calculate the specified value. Therefore,
We prefer to use the macro rather than calculating its value.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'batadv-next-for-davem-20180919' of git://git.open-mesh.org/linux-merge
David S. Miller [Thu, 20 Sep 2018 03:35:37 +0000 (20:35 -0700)]
Merge tag 'batadv-next-for-davem-20180919' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
This feature/cleanup patchset includes the following patches:

 - bump version strings, by Simon Wunderlich

 - Inform users about debugfs interface deprecation, by Sven Eckelmann

 - Implement tracing, planned to replace debugfs log messages,
   by Sven Eckelmann

 - Move OGM rebroadcasts to per interface struct, by Sven Eckelmann

 - Enable LockLess TX to increase throughput, by Sven Eckelmann
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: wan: remove redundant include
zhong jiang [Tue, 18 Sep 2018 08:19:35 +0000 (16:19 +0800)]
net: wan: remove redundant include

module.h already contained moduleparam.h,  so it is safe to remove
the redundant include.

The issue is detected with the help of Coccinelle.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ethernet: remove redundant include
zhong jiang [Tue, 18 Sep 2018 08:10:13 +0000 (16:10 +0800)]
net: ethernet: remove redundant include

module.h already contained moduleparam.h,  so it is safe to remove
the redundant include.

The issue is detected with the help of Coccinelle.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'neterion-use-linux-io-64-nonatomic-lo-hi-h'
David S. Miller [Wed, 19 Sep 2018 03:06:23 +0000 (20:06 -0700)]
Merge branch 'neterion-use-linux-io-64-nonatomic-lo-hi-h'

Corentin Labbe says:

====================
net: ethernet: neterion: use linux/io-64-nonatomic-lo-hi.h

This series remove usage of custom writeq/readq in favor of ones
defined in linux/io-64-nonatomic-lo-hi.h

This series is only compile tested.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: neterion: vxge: Use linux/io-64-nonatomic-lo-hi.h
Corentin Labbe [Tue, 18 Sep 2018 07:33:14 +0000 (07:33 +0000)]
net: neterion: vxge: Use linux/io-64-nonatomic-lo-hi.h

This patch replace the custom definition of writeq/read and use ones
defined in linux/io-64-nonatomic-lo-hi.h.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: neterion: s2io: Use linux/io-64-nonatomic-lo-hi.h
Corentin Labbe [Tue, 18 Sep 2018 07:33:13 +0000 (07:33 +0000)]
net: neterion: s2io: Use linux/io-64-nonatomic-lo-hi.h

This patch replace the custom definition of writeq/read and use ones
defined in linux/io-64-nonatomic-lo-hi.h.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ibm: fix return type of ndo_start_xmit function
YueHaibing [Tue, 18 Sep 2018 06:35:47 +0000 (14:35 +0800)]
net: ibm: fix return type of ndo_start_xmit function

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.

Found by coccinelle.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>