openwrt/staging/blogic.git
6 years agonfp: bpf: disable all ctrl vNIC capabilities
Jakub Kicinski [Thu, 18 Jan 2018 02:51:06 +0000 (18:51 -0800)]
nfp: bpf: disable all ctrl vNIC capabilities

BPF firmware currently exposes IRQ moderation capability.
The driver will make use of it by default, inserting 50 usec
delay to every control message exchange.  This cuts the number
of messages per second we can exchange by almost half.

None of the other capabilities make much sense for BPF control
vNIC, either.  Disable them all.

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 agonfp: allow apps to disable ctrl vNIC capabilities
Jakub Kicinski [Thu, 18 Jan 2018 02:51:05 +0000 (18:51 -0800)]
nfp: allow apps to disable ctrl vNIC capabilities

Most vNIC capabilities are netdev related.  It makes no sense
to initialize them and waste FW resources.  Some are even
counter-productive, like IRQ moderation, which will slow
down exchange of control messages.

Add to nfp_app a mask of enabled control vNIC capabilities
for apps to use.  Make flower and BPF enable all capabilities
for now.  No functional changes.

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 agonfp: split reading capabilities out of nfp_net_init()
Jakub Kicinski [Thu, 18 Jan 2018 02:51:04 +0000 (18:51 -0800)]
nfp: split reading capabilities out of nfp_net_init()

nfp_net_init() is a little long and we are about to add more
code to reading capabilties.  Move the capability reading,
parsing and validating out.  Only actual initialization
will stay in nfp_net_init().

No functional changes.

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 agonfp: read mailbox address from TLV caps
Jakub Kicinski [Thu, 18 Jan 2018 02:51:03 +0000 (18:51 -0800)]
nfp: read mailbox address from TLV caps

Allow specifying alternative vNIC mailbox location in TLV caps.
This way we can size the mailbox to the needs and not necessarily
waste 512B of ctrl memory space.

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 agonfp: read ME frequency from vNIC ctrl memory
Jakub Kicinski [Thu, 18 Jan 2018 02:51:02 +0000 (18:51 -0800)]
nfp: read ME frequency from vNIC ctrl memory

PCIe island clock frequency is used when converting coalescing
parameters from usecs to NFP timestamps.  Most chips don't run
at 1200MHz, allow FW to provide us with the real frequency.

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 agonfp: add TLV capabilities to the BAR
Jakub Kicinski [Thu, 18 Jan 2018 02:51:01 +0000 (18:51 -0800)]
nfp: add TLV capabilities to the BAR

NFP is entirely programmable, including the PCI data interface.
Using a fixed control BAR layout certainly makes implementations
easier, but require careful considerations when space is allocated.
Once BAR area is allocated to one feature nothing else can use it.
Allocating space statically also requires it to be sized upfront,
which leads to either unnecessary limitation or wastage.

We currently have a 32bit capability word defined which tells drivers
which application FW features are supported.   Most of the bits
are exhausted.  The same bits are also reused for enabling specific
features.  Bulk of capabilities don't have a need for an enable bit,
however, leading to confusion and wastage.

TLVs seems like a better fit for expressing capabilities of applications
running on programmable hardware.

This patch leaves the front of the BAR as is, and declares a TLV
capability start at offset 0x58.  Most of the space up to 0x0d90
is already allocated, but the used space can be wrapped with RESERVED
TLVs.  E.g.:

Address    Type         Length
 0x0058    RESERVED      0xe00  /* Wrap basic structures */
 0x0e5c    FEATURE_A     0x004
 0x0e64    FEATURE_B     0x004
 0x0e6c    RESERVED      0x990  /* Wrap qeueue stats */
 0x1800    FEATURE_C     0x100

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 agonfp: improve app not found message
Jakub Kicinski [Thu, 18 Jan 2018 02:51:00 +0000 (18:51 -0800)]
nfp: improve app not found message

When driver app matching loaded FW is not found users are faced with:

   nfp: failed to find app with ID 0x%02x

This message does not properly explain that matching driver code is
either not built into the driver or the driver is too old.

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 agonfp: protect each repr pointer individually with RCU
Jakub Kicinski [Thu, 18 Jan 2018 02:50:59 +0000 (18:50 -0800)]
nfp: protect each repr pointer individually with RCU

Representors are grouped in sets by type.  Currently the whole
sets are under RCU protection, but individual representor pointers
are not.  This causes some inconveniences when representors have
to be destroyed, because we have to allocate new sets to remove
any representors.  Protect the individual pointers with RCU.

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 agonfp: add nfp_reprs_get_locked() helper
Jakub Kicinski [Thu, 18 Jan 2018 02:50:58 +0000 (18:50 -0800)]
nfp: add nfp_reprs_get_locked() helper

The write side of repr tables is always done under pf->lock.
Add a helper to dereference repr table pointers under protection
of that lock.

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 agonfp: register devlink after app is created
Jakub Kicinski [Thu, 18 Jan 2018 02:50:57 +0000 (18:50 -0800)]
nfp: register devlink after app is created

Devlink used to have two global locks: devlink lock and port lock,
our lock ordering looked like this:

  devlink lock -> driver's pf->lock -> devlink port lock

After recent changes port lock was replaced with per-instance
lock.  Unfortunately, new per-instance lock is taken on most
operations now.  This means we can only grab the pf->lock from
the port split/unsplit ops.  Lock ordering looks like this:

  devlink lock -> driver's pf->lock -> devlink instance lock

Since we can't take pf->lock from most devlink ops, make sure
nfp_apps are prepared to service them as soon as devlink is
registered.  Locking the pf must be pushed down after
nfp_app_init() callback.

The init order looks like this:
 nfp_app_init
 devlink_register
 nfp_app_start
 netdev/port_register

As soon as app_init is done nfp_apps must be ready to service
devlink-related callbacks.  apps can only register their own
devlink objects from nfp_app_start.

Fixes: 2406e7e546b2 ("devlink: Add per devlink instance lock")
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 agonfp: release global resources only on the remove path
Jakub Kicinski [Thu, 18 Jan 2018 02:50:56 +0000 (18:50 -0800)]
nfp: release global resources only on the remove path

NFP app is currently shut down as soon as all the vNICs are gone.
This means we can't depend on the app existing throughout the
lifetime of the device.  Free the app only from PCI remove path.

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 agonfp: core: make scalar CPP helpers fail on short accesses
Jakub Kicinski [Thu, 18 Jan 2018 02:50:55 +0000 (18:50 -0800)]
nfp: core: make scalar CPP helpers fail on short accesses

Currently the helpers for accessing 4 or 8 byte values over
the CPP bus return the length of IO on success.  If the IO
was short caller has to deal with error handling.  The short
IO for 4/8B values is completely impractical.  Make the
helpers return an error if full access was not possible.
Fix the few places which are actually dealing with errors
correctly, most call sites already only deal with negative
return codes.

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 agoMerge branch 'tcp-min-rtt'
David S. Miller [Fri, 19 Jan 2018 20:39:31 +0000 (15:39 -0500)]
Merge branch 'tcp-min-rtt'

Yuchung Cheng says:

====================
tcp: do not use RTT from delayed ACKs for min-RTT

This patch set prevents TCP sender from using RTT samples from
(suspected) delayed ACKs as the minimum RTT, to avoid unbounded
over-estimation of the network path delay. This issue is common
when a connection has extended periods of one packet chit-chat
beyond the min RTT filter window. The first patch does that for TCP
general min RTT estimation. The second patch addresses specifically
the BBR congestion control's min RTT filter.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotcp: avoid min RTT bloat by skipping RTT from delayed-ACK in BBR
Yuchung Cheng [Wed, 17 Jan 2018 20:11:01 +0000 (12:11 -0800)]
tcp: avoid min RTT bloat by skipping RTT from delayed-ACK in BBR

A persistent connection may send tiny amount of data (e.g. health-check)
for a long period of time. BBR's windowed min RTT filter may only see
RTT samples from delayed ACKs causing BBR to grossly over-estimate
the path delay depending how much the ACK was delayed at the receiver.

This patch skips RTT samples that are likely coming from delayed ACKs. Note
that it is possible the sender never obtains a valid measure to set the
min RTT. In this case BBR will continue to set cwnd to initial window
which seems fine because the connection is thin stream.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Priyaranjan Jha <priyarjha@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotcp: avoid min-RTT overestimation from delayed ACKs
Yuchung Cheng [Wed, 17 Jan 2018 20:11:00 +0000 (12:11 -0800)]
tcp: avoid min-RTT overestimation from delayed ACKs

This patch avoids having TCP sender or congestion control
overestimate the min RTT by orders of magnitude. This happens when
all the samples in the windowed filter are one-packet transfer
like small request and health-check like chit-chat, which is farily
common for applications using persistent connections. This patch
tries to conservatively labels and skip RTT samples obtained from
this type of workload.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotipc: fix race between poll() and setsockopt()
Jon Maloy [Wed, 17 Jan 2018 15:42:46 +0000 (16:42 +0100)]
tipc: fix race between poll() and setsockopt()

Letting tipc_poll() dereference a socket's pointer to struct tipc_group
entails a race risk, as the group item may be deleted in a concurrent
tipc_sk_join() or tipc_sk_leave() thread.

We now move the 'open' flag in struct tipc_group to struct tipc_sock,
and let the former retain only a pointer to the moved field. This will
eliminate the race risk.

Reported-by: syzbot+799dafde0286795858ac@syzkaller.appspotmail.com
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agol2tp: remove switch block in l2tp_nl_cmd_session_create()
Lorenzo Bianconi [Wed, 17 Jan 2018 10:41:20 +0000 (11:41 +0100)]
l2tp: remove switch block in l2tp_nl_cmd_session_create()

Remove the switch block in l2tp_nl_cmd_session_create() that
checks pseudowire-specific parameters since just L2TP_PWTYPE_ETH and
L2TP_PWTYPE_PPP are currently supported and no actual checks are
performed. Moreover the L2TP_PWTYPE_IP/default case presents a harmless
issue in error handling (break instead of goto out_tunnel)

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Acked-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: IPv6 filter takes 2 tids
Ganesh Goudar [Wed, 17 Jan 2018 07:27:34 +0000 (12:57 +0530)]
cxgb4: IPv6 filter takes 2 tids

on T6, IPv6 filter would occupy 2 tids instead of 4.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'l2tp-set-l2specific_len-based-on-l2specific_type'
David S. Miller [Fri, 19 Jan 2018 20:00:49 +0000 (15:00 -0500)]
Merge branch 'l2tp-set-l2specific_len-based-on-l2specific_type'

Lorenzo Bianconi says:

====================
l2tp: set l2specific_len based on l2specific_type

Do not rely on l2specific_len value provided by userspace but set sublayer
length according to l2specific_type.
Mark L2TP_ATTR_L2SPEC_LEN attribute as not used

Changes since v2:
- drop the patch related to a fix in the switch default case in
  l2tp_nl_cmd_session_create()
- use L2SPECTYPE_NONE as default case in l2tp_get_l2specific_len()

Changes since v1:
- remove l2specific_len parameter
- add sanity check on l2specific_type provided by userspace
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agol2tp: mark L2TP_ATTR_L2SPEC_LEN as not used
Lorenzo Bianconi [Tue, 16 Jan 2018 22:01:57 +0000 (23:01 +0100)]
l2tp: mark L2TP_ATTR_L2SPEC_LEN as not used

Reviewed-by: Guillaume Nault <g.nault@alphalink.fr>
Tested-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agol2tp: remove l2specific_len configurable parameter
Lorenzo Bianconi [Tue, 16 Jan 2018 22:01:56 +0000 (23:01 +0100)]
l2tp: remove l2specific_len configurable parameter

Remove l2specific_len configuration parameter since now L2-Specific
Sublayer length is computed according to l2specific_type provided by
userspace.

Reviewed-by: Guillaume Nault <g.nault@alphalink.fr>
Tested-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agol2tp: remove l2specific_len dependency in l2tp_core
Lorenzo Bianconi [Tue, 16 Jan 2018 22:01:55 +0000 (23:01 +0100)]
l2tp: remove l2specific_len dependency in l2tp_core

Remove l2specific_len dependency while building l2tpv3 header or
parsing the received frame since default L2-Specific Sublayer is
always four bytes long and we don't need to rely on a user supplied
value.
Moreover in l2tp netlink code there are no sanity checks to
enforce the relation between l2specific_len and l2specific_type,
so sending a malformed netlink message is possible to set
l2specific_type to L2TP_L2SPECTYPE_DEFAULT (or even
L2TP_L2SPECTYPE_NONE) and set l2specific_len to a value greater than
4 leaking memory on the wire and sending corrupted frames.

Reviewed-by: Guillaume Nault <g.nault@alphalink.fr>
Tested-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agol2tp: double-check l2specific_type provided by userspace
Lorenzo Bianconi [Tue, 16 Jan 2018 22:01:54 +0000 (23:01 +0100)]
l2tp: double-check l2specific_type provided by userspace

Add sanity check on l2specific_type provided by userspace in
l2tp_nl_cmd_session_create() since just L2TP_L2SPECTYPE_DEFAULT and
L2TP_L2SPECTYPE_NONE are currently supported.
Moreover explicitly set l2specific_type to L2TP_L2SPECTYPE_DEFAULT
only if the userspace does not provide a value for it

Reviewed-by: Guillaume Nault <g.nault@alphalink.fr>
Tested-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'cxgb4-reduce-memory-footprint-for-collecting-firmware-dump'
David S. Miller [Fri, 19 Jan 2018 19:56:32 +0000 (14:56 -0500)]
Merge branch 'cxgb4-reduce-memory-footprint-for-collecting-firmware-dump'

Rahul Lakkireddy says:

====================
cxgb4: reduce memory footprint for collecting firmware dump

Firmware dump can be large (upto 2 GB).  In low memory conditions,
ethtool fails to allocate such large memory.  So, use zlib deflate
to compress collected firmware dump.

Patch 1 updates collection logic to use compression.

Patch 2 adds zlib deflate to compress collected firmware dump.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: use zlib deflate to compress firmware dump
Rahul Lakkireddy [Wed, 17 Jan 2018 07:23:47 +0000 (12:53 +0530)]
cxgb4: use zlib deflate to compress firmware dump

Use zlib deflate to compress firmware dump. Collect and compress
as much firmware dump as possible into a 32 MB buffer.

Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: update dump collection logic to use compression
Rahul Lakkireddy [Wed, 17 Jan 2018 07:23:46 +0000 (12:53 +0530)]
cxgb4: update dump collection logic to use compression

Update firmware dump collection logic to use compression when available.
Let collection logic attempt to do compression, instead of returning out
of memory early.

Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/dim: Fix fixpoint divide exception in net_dim_stats_compare
Talat Batheesh [Wed, 17 Jan 2018 21:13:16 +0000 (23:13 +0200)]
net/dim: Fix fixpoint divide exception in net_dim_stats_compare

Helmut reported a bug about devision by zero while
running traffic and doing physical cable pull test.

When the cable unplugged the ppms become zero, so when
dividing the current ppms by the previous ppms in the
next dim iteration there is devision by zero.

This patch prevent this division for both ppms and epms.

Fixes: c3164d2fc48f ("net/mlx5e: Added BW check for DIM decision mechanism")
Fixes: 4c4dbb4a7363 ("net/mlx5e: Move dynamic interrupt coalescing code to include/linux")
Reported-by: Helmut Grauer <helmut.grauer@de.ibm.com>
Signed-off-by: Talat Batheesh <talatb@mellanox.com>
Signed-off-by: Tal Gilboa <talgi@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agodevlink: Make some functions static
Wei Yongjun [Wed, 17 Jan 2018 03:27:42 +0000 (03:27 +0000)]
devlink: Make some functions static

Fixes the following sparse warnings:

net/core/devlink.c:2297:25: warning:
 symbol 'devlink_resource_find' was not declared. Should it be static?
net/core/devlink.c:2322:6: warning:
 symbol 'devlink_resource_validate_children' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: spectrum: Make function mlxsw_sp_kvdl_part_occ() static
Wei Yongjun [Wed, 17 Jan 2018 03:27:33 +0000 (03:27 +0000)]
mlxsw: spectrum: Make function mlxsw_sp_kvdl_part_occ() static

Fixes the following sparse warning:

drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c:289:5: warning:
 symbol 'mlxsw_sp_kvdl_part_occ' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoforcedeth: remove unused variable
Zhu Yanjun [Wed, 17 Jan 2018 02:59:41 +0000 (21:59 -0500)]
forcedeth: remove unused variable

The variable miistat is not used. So it is removed.

CC: Srinivas Eeda <srinivas.eeda@oracle.com>
CC: Joe Jin <joe.jin@oracle.com>
CC: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoipv6: mcast: remove dead code
Eric Dumazet [Tue, 16 Jan 2018 23:40:00 +0000 (15:40 -0800)]
ipv6: mcast: remove dead code

Since commit 41033f029e39 ("snmp: Remove duplicate OUTMCAST stat
increment") one line of code became unneeded.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocaif: reduce stack size with KASAN
Arnd Bergmann [Tue, 16 Jan 2018 16:34:00 +0000 (17:34 +0100)]
caif: reduce stack size with KASAN

When CONFIG_KASAN is set, we can use relatively large amounts of kernel
stack space:

net/caif/cfctrl.c:555:1: warning: the frame size of 1600 bytes is larger than 1280 bytes [-Wframe-larger-than=]

This adds convenience wrappers around cfpkt_extr_head(), which is responsible
for most of the stack growth. With those wrapper functions, gcc apparently
starts reusing the stack slots for each instance, thus avoiding the
problem.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'linux-can-next-for-4.16-20180119' of ssh://gitolite.kernel.org/pub/scm...
David S. Miller [Fri, 19 Jan 2018 15:30:40 +0000 (10:30 -0500)]
Merge tag 'linux-can-next-for-4.16-20180119' of ssh://gitolite./linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2018-01-16

this is a pull request for net-next/master consisting of 1 patch.

This patch by Arnd Bergmann for the m_can driver silences a compiler
warning if CONFIG_PM is not selected.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'wireless-drivers-next-for-davem-2018-01-19' of git://git.kernel.org/pub...
David S. Miller [Fri, 19 Jan 2018 15:26:53 +0000 (10:26 -0500)]
Merge tag 'wireless-drivers-next-for-davem-2018-01-19' of git://git./linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for 4.16

Final few patches before the merge window, nothing really special.

ath9k

* add MSI support (not enabled by default yet)

rtlwifi

* support A-MSDU in A-MPDU aggregation
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocan: m_can: mark runtime-PM handlers as __maybe_unused
Arnd Bergmann [Thu, 18 Jan 2018 13:04:42 +0000 (14:04 +0100)]
can: m_can: mark runtime-PM handlers as __maybe_unused

Building without CONFIG_PM results in a harmless warning:

drivers/net/can/m_can/m_can.c:1763:12: error: 'm_can_runtime_resume' defined but not used [-Werror=unused-function]
drivers/net/can/m_can/m_can.c:1752:12: error: 'm_can_runtime_suspend' defined but not used [-Werror=unused-function]

Marking the functions as __maybe_unused lets the compiler
silently drop them instead.

Fixes: cdf8259d6573 ("can: m_can: Add PM Support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
6 years agonet/sched/sch_prio.c: work around gcc-4.4.4 union initializer issues
Andrew Morton [Fri, 19 Jan 2018 00:30:49 +0000 (16:30 -0800)]
net/sched/sch_prio.c: work around gcc-4.4.4 union initializer issues

gcc-4.4.4 has problems witn anon union initializers.  Work around this.

net/sched/sch_prio.c: In function 'prio_dump_offload':
net/sched/sch_prio.c:260: error: unknown field 'stats' specified in initializer
net/sched/sch_prio.c:260: warning: initialization makes integer from pointer without a cast
net/sched/sch_prio.c:261: error: unknown field 'stats' specified in initializer
net/sched/sch_prio.c:261: warning: initialization makes integer from pointer without a cast

Fixes: 7fdb61b44c0c95 ("net: sch: prio: Add offload ability to PRIO qdisc")
Cc: Nogah Frankel <nogahf@mellanox.com>
Cc: Yuval Mintz <yuvalm@mellanox.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoflow_netlink: Remove unneeded semicolons
Christopher Díaz Riveros [Wed, 17 Jan 2018 21:10:28 +0000 (16:10 -0500)]
flow_netlink: Remove unneeded semicolons

Trivial fix removes unneeded semicolons after if blocks.

This issue was detected by using the Coccinelle software.

Signed-off-by: Christopher Díaz Riveros <chrisadr@gentoo.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx5e: Fix trailing semicolon
Luis de Bethencourt [Wed, 17 Jan 2018 12:09:15 +0000 (12:09 +0000)]
net/mlx5e: Fix trailing semicolon

The trailing semicolon is an empty statement that does no operation.
Removing it since it doesn't do anything.

Signed-off-by: Luis de Bethencourt <luisbg@kernel.org>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: silence uninitialized parent variable warning in tc_dump_tfilter
Jiri Pirko [Thu, 18 Jan 2018 15:14:49 +0000 (16:14 +0100)]
net: sched: silence uninitialized parent variable warning in tc_dump_tfilter

When tcm->tcm_ifindex == TCM_IFINDEX_MAGIC_BLOCK, parent is still passed
down but the value is never used. Compiler does not recognize it and
issues a warning. Silence it down initializing parent to 0.

Fixes: 7960d1daf278 ("net: sched: use block index as a handle instead of qdisc when block is shared")
Reported-by: David Miller <davem@davemloft.net>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agortlwifi: Support A-MSDU in A-MPDU capability
Ping-Ke Shih [Thu, 18 Jan 2018 01:26:14 +0000 (09:26 +0800)]
rtlwifi: Support A-MSDU in A-MPDU capability

Due to the fact that A-MSDU deaggregation is done in software,
we set this flag to support the A-MSDU in A-MPDU

Signed-off-by: Steven Ting <steventing@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agoMAINTAINERS: wireless: update wil6210 maintainer entry
Maya Erez [Wed, 17 Jan 2018 20:05:42 +0000 (22:05 +0200)]
MAINTAINERS: wireless: update wil6210 maintainer entry

wil6210 maintainer email and mail list has changed, hence update
its MAINTAINERS entry accordingly.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agoMerge tag 'linux-can-next-for-4.16-20180116' of ssh://gitolite.kernel.org/pub/scm...
David S. Miller [Wed, 17 Jan 2018 21:08:25 +0000 (16:08 -0500)]
Merge tag 'linux-can-next-for-4.16-20180116' of ssh://gitolite./linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2018-01-16

this is a pull request for net-next/master consisting of 9 patches.

This is a series of patches, some of them initially by Franklin S Cooper
Jr, which was picked up by Faiz Abbas. Faiz Abbas added some patches
while working on this series, I contributed one as well.

The first two patches add support to CAN device infrastructure to limit
the bitrate of a CAN adapter if the used CAN-transceiver has a certain
maximum bitrate.

The remaining patches improve the m_can driver. They add support for
bitrate limiting to the driver, clean up the driver and add support for
runtime PM.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agovxlan: Fix trailing semicolon
Luis de Bethencourt [Tue, 16 Jan 2018 15:03:32 +0000 (15:03 +0000)]
vxlan: Fix trailing semicolon

The trailing semicolon is an empty statement that does no operation.
It is completely stripped out by the compiler. Removing it since it doesn't do
anything.

Fixes: 5f35227ea34b ("net: Generalize ndo_gso_check to ndo_features_check")
Signed-off-by: Luis de Bethencourt <luisbg@kernel.org>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: restructure VF mgmt code
Ganesh Goudar [Tue, 16 Jan 2018 10:47:40 +0000 (16:17 +0530)]
cxgb4: restructure VF mgmt code

restructure the code which adds support for configuring
PCIe VF via mgmt netdevice. which was added by
commit 7829451c695e ("cxgb4: Add control net_device for
configuring PCIe VF")

Original work by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Remove spinlock from get_net_ns_by_id()
Kirill Tkhai [Tue, 16 Jan 2018 09:31:54 +0000 (12:31 +0300)]
net: Remove spinlock from get_net_ns_by_id()

idr_find() is safe under rcu_read_lock() and
maybe_get_net() guarantees that net is alive.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Fix possible race in peernet2id_alloc()
Kirill Tkhai [Tue, 16 Jan 2018 09:31:41 +0000 (12:31 +0300)]
net: Fix possible race in peernet2id_alloc()

peernet2id_alloc() is racy without rtnl_lock() as refcount_read(&peer->count)
under net->nsid_lock does not guarantee, peer is alive:

rcu_read_lock()
peernet2id_alloc()                            ..
  spin_lock_bh(&net->nsid_lock)               ..
  refcount_read(&peer->count) (!= 0)          ..
  ..                                          put_net()
  ..                                            cleanup_net()
  ..                                              for_each_net(tmp)
  ..                                                spin_lock_bh(&tmp->nsid_lock)
  ..                                                __peernet2id(tmp, net) == -1
  ..                                                    ..
  ..                                                    ..
    __peernet2id_alloc(alloc == true)                   ..
  ..                                                    ..
rcu_read_unlock()                                       ..
..                                                synchronize_rcu()
..                                                kmem_cache_free(net)

After the above situation, net::netns_id contains id pointing to freed memory,
and any other dereferencing by the id will operate with this freed memory.

Currently, peernet2id_alloc() is used under rtnl_lock() everywhere except
ovs_vport_cmd_fill_info(), and this race can't occur. But peernet2id_alloc()
is generic interface, and better we fix it before someone really starts
use it in wrong context.

v2: Don't place refcount_read(&net->count) under net->nsid_lock
    as suggested by Eric W. Biederman <ebiederm@xmission.com>
v3: Rebase on top of net-next

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'tun-allow-to-attach-eBPF-filter'
David S. Miller [Wed, 17 Jan 2018 20:32:11 +0000 (15:32 -0500)]
Merge branch 'tun-allow-to-attach-eBPF-filter'

Jason Wang says:

====================
tun: allow to attach eBPF filter

This series tries to implement eBPF socket filter for tun. This could
be used for implementing efficient virtio-net receive filter for
vhost-net.

Changes from V2:
- fix typo
- remove unnecessary double check
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotun: allow to attach ebpf socket filter
Jason Wang [Tue, 16 Jan 2018 08:31:02 +0000 (16:31 +0800)]
tun: allow to attach ebpf socket filter

This patch allows userspace to attach eBPF filter to tun. This will
allow to implement VM dataplane filtering in a more efficient way
compared to cBPF filter by allowing either qemu or libvirt to
attach eBPF filter to tun.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotuntap: rename struct tun_steering_prog to struct tun_prog
Jason Wang [Tue, 16 Jan 2018 08:31:01 +0000 (16:31 +0800)]
tuntap: rename struct tun_steering_prog to struct tun_prog

To be reused by other eBPF program other than queue selection.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'net-sched-allow-qdiscs-to-share-filter-block-instances'
David S. Miller [Wed, 17 Jan 2018 19:53:58 +0000 (14:53 -0500)]
Merge branch 'net-sched-allow-qdiscs-to-share-filter-block-instances'

Jiri Pirko says:

====================
net: sched: allow qdiscs to share filter block instances

Currently the filters added to qdiscs are independent. So for example if you
have 2 netdevices and you create ingress qdisc on both and you want to add
identical filter rules both, you need to add them twice. This patchset
makes this easier and mainly saves resources allowing to share all filters
within a qdisc - I call it a "filter block". Also this helps to save
resources when we do offload to hw for example to expensive TCAM.

So back to the example. First, we create 2 qdiscs. Both will share
block number 22. "22" is just an identification:
$ tc qdisc add dev ens7 ingress_block 22 ingress
                        ^^^^^^^^^^^^^^^^
$ tc qdisc add dev ens8 ingress_block 22 ingress
                        ^^^^^^^^^^^^^^^^

If we don't specify "block" command line option, no shared block would
be created:
$ tc qdisc add dev ens9 ingress

Now if we list the qdiscs, we will see the block index in the output:

$ tc qdisc
qdisc ingress ffff: dev ens7 parent ffff:fff1 ingress_block 22
qdisc ingress ffff: dev ens8 parent ffff:fff1 ingress_block 22
qdisc ingress ffff: dev ens9 parent ffff:fff1

To make is more visual, the situation looks like this:

   ens7 ingress qdisc                 ens7 ingress qdisc
          |                                  |
          |                                  |
          +---------->  block 22  <----------+

Unlimited number of qdiscs may share the same block.

Note that this patchset introduces block sharing support also for clsact
qdisc:
$ tc qdisc add dev ens10 ingress_block 23 egress_block 24 clsact
$ tc qdisc show dev ens10
qdisc clsact ffff: dev ens10 parent ffff:fff1 ingress_block 23 egress_block 24

We can add filter using the block index:

$ tc filter add block 22 protocol ip pref 25 flower dst_ip 192.168.0.0/16 action drop

Note we cannot use the qdisc for filter manipulations of shared blocks:

$ tc filter add dev ens8 ingress protocol ip pref 1 flower dst_ip 192.168.100.2 action drop
Error: This filter block is shared. Please use the block index to manipulate the filters.

We will see the same output if we list filters for ingress qdisc of
ens7 and ens8, also for the block 22:

$ tc filter show block 22
filter block 22 protocol ip pref 25 flower chain 0
filter block 22 protocol ip pref 25 flower chain 0 handle 0x1
...

$ tc filter show dev ens7 ingress
filter block 22 protocol ip pref 25 flower chain 0
filter block 22 protocol ip pref 25 flower chain 0 handle 0x1
...

$ tc filter show dev ens8 ingress
filter block 22 protocol ip pref 25 flower chain 0
filter block 22 protocol ip pref 25 flower chain 0 handle 0x1
...

---
v10->v11:
- patch 2:
 - fixed error path when register_pernet_subsys fails pointed out by Cong
- patch 9:
 - rebased on top of the current net-next

v9->v10:
- patch 7:
 - fixed ifindex magic in the patch description
- userspace patches:
 - added manpages and patch descriptions

v8->v9:
- patch "net: sched: add rt netlink message type for block get" was
  removed, userspace check filter existence using qdisc dump

v7->v8:
- patch 7:
 - added comment to ifindex block magic
- patch 9:
 - new patch
- patch 10:
 - base this on the patch that introduces qdisc-generic block index
   attributes parsing/dumping
- patch 13:
 - rebased on top of current net-next

v6->v7:
- patch 1:
 - unsquashed shared block patch that was previously squashed by mistake
 - fixed error path in block create - freeing chain 0
- patch 2:
 - new patch - splitted from the previous one as it got accidentaly
   squashed in the rebasing process in the past
 - converted to idr extended
 - removed auto-generating of block indexes. Callers have to explicily
   tell that the block is shared by passing non-zero block index
 - fixed error path in block get ext - freeing chain 0
- patch 7:
 - changed extack message for block index handle as suggested by DaveA
 - added extack message when block index does not exist
 - the block ifindex magic is in define and change to 0xffffffff
   as suggested by Jamal
- patch 8:
 - new patch implementing RTM_GETBLOCK in order to query if the block
   with some index exists
- patch 9:
 - adjust to the core changes and check block index attributes for being 0

v5->v6:
- added patch 6 that introduces block handle

v4->v5:
- patch 5:
 - add tracking of binding of devs that are unable to offload and check
   that before block cbs call.

v3->v4:
- patch 1:
 - rebased on top of the current net-next
 - added some extack strings
- patch 3:
 - rebased on top of the current net-next
- patch 5:
 - propagate netdev_ops->ndo_setup_tc error up to tcf_block_offload_bind
   caller
- patch 7:
 - rebased on top of the current net-next

v2->v3:
- removed original patch 1, removing tp->q cls_bpf dependency. Fixed by
  Jakub in the meantime.
- patch 1:
 - rebased on top of the current net-next
- patch 5:
 - new patch
- patch 8:
 - removed "p_" prefix from block index function args
- patch 10:
 - add tc offload feature handling
====================

Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: spectrum_acl: Pass mlxsw_sp_port down to ruleset bind/unbind ops
Jiri Pirko [Wed, 17 Jan 2018 10:46:57 +0000 (11:46 +0100)]
mlxsw: spectrum_acl: Pass mlxsw_sp_port down to ruleset bind/unbind ops

No need to convert from mlxsw_sp_port to net_device and back again.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: spectrum_acl: Implement TC block sharing
Jiri Pirko [Wed, 17 Jan 2018 10:46:56 +0000 (11:46 +0100)]
mlxsw: spectrum_acl: Implement TC block sharing

Benefit from the prepared TC and in-driver ACL infrastructure and
introduce block sharing offload. For that, a new struct "block" is
introduced in spectrum_acl in order to hold a list of specific
block-port bindings.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: spectrum_acl: Don't store netdev and ingress for ruleset unbind
Jiri Pirko [Wed, 17 Jan 2018 10:46:55 +0000 (11:46 +0100)]
mlxsw: spectrum_acl: Don't store netdev and ingress for ruleset unbind

Instead, pass netdev and ingress flag to ruleset unbind op.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: spectrum_acl: Reshuffle code around mlxsw_sp_acl_ruleset_create/destroy
Jiri Pirko [Wed, 17 Jan 2018 10:46:54 +0000 (11:46 +0100)]
mlxsw: spectrum_acl: Reshuffle code around mlxsw_sp_acl_ruleset_create/destroy

In order to prepare for follow-up changes, make the bind/unbind helpers
very simple. That required move of ht insertion/removal and bind/unbind
calls into mlxsw_sp_acl_ruleset_create/destroy.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: allow ingress and clsact qdiscs to share filter blocks
Jiri Pirko [Wed, 17 Jan 2018 10:46:53 +0000 (11:46 +0100)]
net: sched: allow ingress and clsact qdiscs to share filter blocks

Benefit from the previously introduced shared filter blocks
infrastructure and allow ingress and clsact qdisc instances to share
filter blocks. The block index is coming from userspace as qdisc option.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: introduce ingress/egress block index attributes for qdisc
Jiri Pirko [Wed, 17 Jan 2018 10:46:52 +0000 (11:46 +0100)]
net: sched: introduce ingress/egress block index attributes for qdisc

Introduce two new attributes to be used for qdisc creation and dumping.
One for ingress block, one for egress block. Introduce a set of ops that
qdisc which supports block sharing would implement.

Passing block indexes in qdisc change is not supported yet and it is
checked and forbidded.

In future, these attributes are to be reused for specifying block
indexes for classes as well. As of this moment however, it is not
supported so a check is in place to forbid it.

Suggested-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: use block index as a handle instead of qdisc when block is shared
Jiri Pirko [Wed, 17 Jan 2018 10:46:51 +0000 (11:46 +0100)]
net: sched: use block index as a handle instead of qdisc when block is shared

As the tcm_ifindex with value TCM_IFINDEX_MAGIC_BLOCK is invalid ifindex,
use it to indicate that we work with block, instead of qdisc.
So if tcm_ifindex is set to TCM_IFINDEX_MAGIC_BLOCK, tcm_parent is used
to carry block_index.

If the block is set to be shared between at least 2 qdiscs, it is
forbidden to use the qdisc handle to add/delete filters. In that case,
userspace has to pass block_index.

Also, for dump of the filters, in case the block is shared in between at
least 2 qdiscs, the each filter is dumped with tcm_ifindex value
TCM_IFINDEX_MAGIC_BLOCK and tcm_parent set to block_index. That gives
the user clear indication, that the filter belongs to a shared block
and not only to one qdisc under which it is dumped.

Suggested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: keep track of offloaded filters and check tc offload feature
Jiri Pirko [Wed, 17 Jan 2018 10:46:50 +0000 (11:46 +0100)]
net: sched: keep track of offloaded filters and check tc offload feature

During block bind, we need to check tc offload feature. If it is
disabled yet still the block contains offloaded filters, forbid the
bind. Also forbid to register callback for a block that already
contains offloaded filters, as the play back is not supported now.
For keeping track of offloaded filters there is a new counter
introduced, alongside with couple of helpers called from cls_* code.
These helpers set and clear TCA_CLS_FLAGS_IN_HW flag.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: remove classid and q fields from tcf_proto
Jiri Pirko [Wed, 17 Jan 2018 10:46:49 +0000 (11:46 +0100)]
net: sched: remove classid and q fields from tcf_proto

Both are no longer used, so remove them.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: introduce block mechanism to handle netif_keep_dst calls
Jiri Pirko [Wed, 17 Jan 2018 10:46:48 +0000 (11:46 +0100)]
net: sched: introduce block mechanism to handle netif_keep_dst calls

Couple of classifiers call netif_keep_dst directly on q->dev. That is
not possible to do directly for shared blocke where multiple qdiscs are
owning the block. So introduce a infrastructure to keep track of the
block owners in list and use this list to implement block variant of
netif_keep_dst.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: avoid usage of tp->q in tcf_classify
Jiri Pirko [Wed, 17 Jan 2018 10:46:47 +0000 (11:46 +0100)]
net: sched: avoid usage of tp->q in tcf_classify

Use block index in the messages instead.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: introduce shared filter blocks infrastructure
Jiri Pirko [Wed, 17 Jan 2018 10:46:46 +0000 (11:46 +0100)]
net: sched: introduce shared filter blocks infrastructure

Allow qdiscs to share filter blocks among them. Each qdisc type has to
use block get/put extended modifications that enable sharing.
Shared blocks are tracked within each net namespace and identified
by u32 index. This index is passed from user during the qdisc creation.
If user passes index that is not used by any other qdisc, new block
is created. If user passes index that is already used, the existing
block will be re-used.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: introduce support for multiple filter chain pointers registration
Jiri Pirko [Wed, 17 Jan 2018 10:46:45 +0000 (11:46 +0100)]
net: sched: introduce support for multiple filter chain pointers registration

So far, there was possible only to register a single filter chain
pointer to block->chain[0]. However, when the blocks will get shareable,
we need to allow multiple filter chain pointers registration.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'bnxt_en-next'
David S. Miller [Wed, 17 Jan 2018 19:48:27 +0000 (14:48 -0500)]
Merge branch 'bnxt_en-next'

Michael Chan says:

====================
bnxt_en: Updates for net-next.

First, we upgrade the firmware interface spec.  Due to a change in
the toolchains, the auto-generated bnxt_hsi.h does not match the
old bnxt_hsi.h and the patch is really big.  This should be just
one-time.  Going forward, changes should be incremental.

The next 10 patches implement a new scheme for the PF and VF drivers
to allocate and reserve resources.  The new scheme is more flexible
and allows dynamic and asymmetric distribution of resources, whereas
the old scheme is static and even distribution.

The last few patches add cacheline size setting, a couple of PCI IDs,
better management of VF MAC address, and a better parent switchdev ID
for dual-port devices.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: export a common switchdev PARENT_ID for all reps of an adapter
Sathya Perla [Wed, 17 Jan 2018 08:21:16 +0000 (03:21 -0500)]
bnxt_en: export a common switchdev PARENT_ID for all reps of an adapter

Currently the driver exports different switchdev PARENT_IDs for
representors belonging to different SR-IOV PF-pools of an adapter.
This is not correct as the adapter can switch across all vports
of an adapter. This patch fixes this by exporting a common switchdev
PARENT_ID for all reps of an adapter. The PCIE DSN is used as the id.

Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Add cache line size setting to optimize performance.
Michael Chan [Wed, 17 Jan 2018 08:21:15 +0000 (03:21 -0500)]
bnxt_en: Add cache line size setting to optimize performance.

The chip supports 64-byte and 128-byte cache line size for more optimal
DMA performance when matched to the CPU cache line size.  The default is 64.
If the system is using 128-byte cache line size, set it to 128.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Forward VF MAC address to the PF.
Vasundhara Volam [Wed, 17 Jan 2018 08:21:14 +0000 (03:21 -0500)]
bnxt_en: Forward VF MAC address to the PF.

Forward hwrm_func_vf_cfg command from VF to PF driver, to store
VF MAC address in PF's context.  This will allow "ip link show"
to display all VF MAC addresses.

Maintain 2 locations of MAC address in VF info structure, one for
a PF assigned MAC and one for VF assigned MAC.

Display VF assigned MAC in "ip link show", only if PF assigned MAC is
not valid.

Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Add BCM5745X NPAR device IDs
Vasundhara Volam [Wed, 17 Jan 2018 08:21:13 +0000 (03:21 -0500)]
bnxt_en: Add BCM5745X NPAR device IDs

Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Expand bnxt_check_rings() to check all resources.
Michael Chan [Wed, 17 Jan 2018 08:21:12 +0000 (03:21 -0500)]
bnxt_en: Expand bnxt_check_rings() to check all resources.

bnxt_check_rings() is called by ethtool, XDP setup, and ndo_setup_tc()
to see if there are enough resources to support the new configuration.
Expand the call to test all resources if the firmware supports the new
API.  With the more flexible resource allocation scheme, this call must
be made to check that all resources are available before committing to
allocate the resources.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Implement new method for the PF to assign SRIOV resources.
Michael Chan [Wed, 17 Jan 2018 08:21:11 +0000 (03:21 -0500)]
bnxt_en: Implement new method for the PF to assign SRIOV resources.

Instead of the old method of evenly dividing the resources to the VFs,
use the new firmware API to specify min and max resources for each VF.
This way, there is more flexibility for each VF to allocate more or less
resources.

The min is the absolute minimum for each VF to function.  The max is the
global resources minus the resources used by the PF.  Each VF is
guaranteed the min.  Up to max resources may be available for some VFs.

The PF driver can use one of 2 strategies specified in NVRAM to assign
the resources.  The old legacy strategy of evenly dividing the resources
or the new flexible strategy.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Reserve resources for RFS.
Michael Chan [Wed, 17 Jan 2018 08:21:10 +0000 (03:21 -0500)]
bnxt_en: Reserve resources for RFS.

In bnxt_rfs_capable(), add call to reserve vnic resources to support
NTUPLE.  Return true if we can successfully reserve enough vnics.
Otherwise, reserve the minimum 1 VNIC for normal operations not
supporting NTUPLE and return false.

Also, suppress warning message about not enough resources for NTUPLE when
only 1 RX ring is in use.  NTUPLE filters by definition require multiple
RX rings.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Implement new method to reserve rings.
Michael Chan [Wed, 17 Jan 2018 08:21:09 +0000 (03:21 -0500)]
bnxt_en: Implement new method to reserve rings.

The new method will call firmware to reserve the desired tx, rx, cmpl
rings, ring groups, stats context, and vnic resources.  A second query
call will check the actual resources that firmware is able to reserve.
The driver will then trim and adjust based on the actual resources
provided by firmware.  The driver will then reserve the final resources
in use.

This method is a more flexible way of using hardware resources.  The
resources are not fixed and can by adjusted by firmware.  The driver
adapts to the available resources that the firmware can reserve for
the driver.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Set initial default RX and TX ring numbers the same in combined mode.
Michael Chan [Wed, 17 Jan 2018 08:21:08 +0000 (03:21 -0500)]
bnxt_en: Set initial default RX and TX ring numbers the same in combined mode.

In combined mode, the driver is currently not setting RX and TX ring
numbers the same when firmware can allocate more RX than TX or vice versa.
This will confuse the user as the ethtool convention assumes they are the
same in combined mode.  Fix it by adding bnxt_trim_dflt_sh_rings() to trim
RX and TX ring numbers to be the same as the completion ring number in
combined mode.

Note that if TCs are enabled and/or XDP is enabled, the number of TX rings
will not be the same as RX rings in combined mode.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Add the new firmware API to query hardware resources.
Michael Chan [Wed, 17 Jan 2018 08:21:07 +0000 (03:21 -0500)]
bnxt_en: Add the new firmware API to query hardware resources.

The new API HWRM_FUNC_RESOURCE_QCAPS provides min and max hardware
resources.  Use the new API when it is supported by firmware.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Refactor hardware resource data structures.
Michael Chan [Wed, 17 Jan 2018 08:21:06 +0000 (03:21 -0500)]
bnxt_en: Refactor hardware resource data structures.

In preparation for new firmware APIs to allocate hardware resources,
add a new struct bnxt_hw_resc to hold various min, max and reserved
resources.  This new structure is common for PFs and VFs.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Restore MSIX after disabling SRIOV.
Michael Chan [Wed, 17 Jan 2018 08:21:05 +0000 (03:21 -0500)]
bnxt_en: Restore MSIX after disabling SRIOV.

After SRIOV has been enabled and disabled, the MSIX vectors assigned to
the VFs have to be re-initialized.  Otherwise they cannot be re-used by
the PF.  For example, increasing the number of PF rings after disabling
SRIOV may fail if the PF uses MSIX vectors previously assigned to the VFs.

To fix this, we add logic in bnxt_restore_pf_fw_resources() to close the
NIC, clear and re-init MSIX, and re-open the NIC.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Refactor bnxt_close_nic().
Michael Chan [Wed, 17 Jan 2018 08:21:04 +0000 (03:21 -0500)]
bnxt_en: Refactor bnxt_close_nic().

Add a new __bnxt_close_nic() function to do all the work previously done
in bnxt_close_nic() except waiting for SRIOV configuration.  The new
function will be used in the next patch as part of SRIOV cleanup.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Update firmware interface to 1.9.0.
Michael Chan [Wed, 17 Jan 2018 08:21:03 +0000 (03:21 -0500)]
bnxt_en: Update firmware interface to 1.9.0.

The version has new firmware APIs to allocate PF/VF resources more
flexibly.

New toolchains were used to generate this file, resulting in a one-time
large diffstat.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'dwmac-meson8b-clock-fixes-for-Meson8b'
David S. Miller [Wed, 17 Jan 2018 19:41:06 +0000 (14:41 -0500)]
Merge branch 'dwmac-meson8b-clock-fixes-for-Meson8b'

Martin Blumenstingl says:

====================
dwmac-meson8b: clock fixes for Meson8b

this series is now successfully tested, thus we think it's ready to be
applied to your net-next tree.

Emiliano reported [0] that he couldn't get dwmac-meson8b to work on his
Odroid-C1. This is the (hopefully) final version of this series, which
was successfully tested.

Due to the fact that the public S805/S905/S912 datasheets all seem to
be outdated regarding the description of the PRG_ETH0 (also called
PRG_ETHERNET_ADDR0) register Linus Lüssing offered to help testing with
an oscilloscope and an Odroid-C1. I would like to say HUGE thanks to him
at this point as he spent hours figuring out the effects of the bits
that are (though to be) relevant to get Ethernet working on the
Odroid-C1.
We tested three scenarios, all based on version 3 of this series:
1) MPLL2 at ~500MHz, m250_div set to 1, bit 10 enabled
this resulted in a clock rate twice as high as expected at the RGMII TX
clock pin (250MHz instead of 125MHz for Gbit connections and 50MHz
instead of 25MHz for 100Mbit/s connections). it did not change the
rate at the XTAL_IN pin of PHY (which stayed consistenly at 25MHz)
2) MPLL2 at ~250MHz, m250_div set to 1, bit 10 disabled
the oscilloscope shows "no clock" for the RGMII TX clock pin at it's
highest resolution (and random rates at lower resolutions). XTAL_IN is
still at 25MHz
3) MPLL2 at ~250MHz, m250_div set to 1, bit 10 enabled
this resulted in a 125MHz signal at the RGMII TX clock pin for Gbit
speeds and 25MHz for 100Mbit/s - both values are as expected. The rate
on the XTAL_IN pin was at 25MHz
-> boot-logs (with the PRG_ETH0 register value) and screenshots from the
readings of the oscilloscope can be found at:
https://metameute.de/~tux/linux/amlogic/odroidc1/ethernet/

Version 4 of this series is based on the results from Linus Lüssing's
help with the oscilloscope and Odroid-C1.
Unfortunately I don't have any Meson8b boards with RGMII PHY so I could
only partially test this. @Emiliano: Could you please give this version
a try and let me know about the results (preferably with a "Tested-by"
if it works)?
You obviously still need your two "ARM: dts: meson8b" patches which
- add the amlogic,meson8b-dwmac" compatible to meson8b.dtsi
- enable Ethernet on the Odroid-C1 (according to your last thest a TX
  delay of 4ns is required to make it work properly)

When testing on Meson8b this also needs a fix for the MPLL clock driver:
"clk: meson: mpll: use 64-bit maths in params_from_rate", see:
https://patchwork.kernel.org/patch/10131677/

I have tested this myself on a Khadas VIM (GXL SoC, internal RMII PHY)
and a Khadas VIM2 (GXM SoC, external RGMII PHY). Both are still working
fine (so let's hope that this also fixes your Meson8b issue :)).

changes since v4 at [4]:
- dropped "RFT" status since Jerome tested this series successfully!
- dropped PATCH #2 ("simplify generating the clock names"). I will
  improve the whole clock registration in a separate series. since that
  patch didn't really improve anything I dropped it for now
- added Jerome's Acked-/Reviewed-/Tested-by's - many thanks!

changes since v3 at [3]:
- renamed the function PATCH #1 from meson8b_init_rgmii_clk to
  meson8b_init_rgmii_tx_clk since we now know what the register bits
  mean
- rewrote PATCH #3 because bit 10 is a gate clock and it seems that
  there is an internal fixed divide-by-2 clock. see the patch
  description for a detailed explanation
- updated the description of PATCH #4 and #5 as the clock we're trying
  to fix is the "RGMII TX" clock (old version stated that this is the
  "RGMII clock" or "PHY reference clock"). also updated the numbers in
  the description now that we have the clock hierarchy right (at least
  we hope so)

changes since v2 at [2]:
- added PATCH #2 to make the following patch easier
- Emiliano reported that there's currently another bug in the
  dwmac-meson8b driver which prevents it from working with RGMII PHYs on
  Meson8b: bit 10 of the PRG_ETH0 register is configures a clock gate
  (instead of a divide by 5 or divide by 10 clock divider). This has not
  been visible on GXBB and later due to the input clock which always led
  to a selection of "divide by 10" (which is done internally in the IP
  block, but the bit actually means "enable RGMII clock output").
  PATCH #3 was added to address this issue.
- the commit message of PATCH #4 and #5 (formerly PATCH #2 and #3) were
  updated and the patch itself rebased because the m25_div clock was
  removed with the new PATCH #3 (so some of the statements were not
  valid anymore)

changes since v1 at [1]:
- changed the subject of the cover-letter to indicate that this is all
  about the RGMII clock
- added PATCH #1 which ensures that we don't unnecessarily change the
  parent clocks in RMII mode (and also makes the code easier to
  understand)
- changed subject of PATCH #2 (formerly PATCH #1) to state that this
  is about the RGMII clock
- added Jerome's Reviewed-by to PATCH #2 (formerly PATCH #1)
- replaced PATCH #3 (formerly PATCH #2) with one that sets
  CLK_SET_RATE_PARENT on the mux and thus re-configures the MPLL2 clock
  on Meson8b correctly

[0] http://lists.infradead.org/pipermail/linux-amlogic/2017-December/005596.html
[1] http://lists.infradead.org/pipermail/linux-amlogic/2017-December/005848.html
[2] http://lists.infradead.org/pipermail/linux-amlogic/2017-December/005861.html
[3] http://lists.infradead.org/pipermail/linux-amlogic/2017-December/005899.html
[4] http://lists.infradead.org/pipermail/linux-amlogic/2018-January/006125.html
====================

Tested-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: stmmac: dwmac-meson8b: propagate rate changes to the parent clock
Martin Blumenstingl [Mon, 15 Jan 2018 17:10:15 +0000 (18:10 +0100)]
net: stmmac: dwmac-meson8b: propagate rate changes to the parent clock

On Meson8b the only valid input clock is MPLL2. The bootloader
configures that to run at 500002394Hz which cannot be divided evenly
down to 125MHz using the m250_div clock. Currently the common clock
framework chooses a m250_div of 2 - with the internal fixed
"divide by 10" this results in a RGMII TX clock of 125001197Hz (120Hz
above the requested 125MHz).

Letting the common clock framework propagate the rate changes up to the
parent of m250_mux allows us to get the best possible clock rate. With
this patch the common clock framework calculates a rate of
very-close-to-250MHz (249999701Hz to be exact) for the MPLL2 clock
(which is the mux input). Dividing that by 2 (which is an internal,
fixed divider for the RGMII TX clock) gives us an RGMII TX clock of
124999850Hz (which is only 150Hz off the requested 125MHz, compared to
1197Hz based on the MPLL2 rate set by u-boot and the Amlogic GPL kernel
sources).

SoCs from the Meson GX series are not affected by this change because
the input clock is FCLK_DIV2 whose rate cannot be changed (which is fine
since it's running at 1GHz, so it's already a multiple of 250MHz and
125MHz).

Fixes: 566e8251625304 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC")
Suggested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: stmmac: dwmac-meson8b: fix setting the RGMII TX clock on Meson8b
Martin Blumenstingl [Mon, 15 Jan 2018 17:10:14 +0000 (18:10 +0100)]
net: stmmac: dwmac-meson8b: fix setting the RGMII TX clock on Meson8b

Meson8b only supports MPLL2 as clock input. The rate of the MPLL2 clock
set by Odroid-C1's u-boot is close to (but not exactly) 500MHz. The
exact rate is 500002394Hz, which is calculated in
drivers/clk/meson/clk-mpll.c using the following formula:
DIV_ROUND_UP_ULL((u64)parent_rate * SDM_DEN, (SDM_DEN * n2) + sdm)
Odroid-C1's u-boot configures MPLL2 with the following values:
- SDM_DEN = 16384
- SDM = 1638
- N2 = 5

The 250MHz clock (m250_div) inside dwmac-meson8b driver is derived from
the MPLL2 clock. Due to MPLL2 running slightly faster than 500MHz the
common clock framework chooses a divider which is too big to generate
the 250MHz clock (a divider of 2 would be needed, but this is rounded up
to a divider of 3). This breaks the RTL8211F RGMII PHY on Odroid-C1
because it requires a (close to) 125MHz RGMII TX clock (on Gbit speeds,
the IP block internally divides that down to 25MHz on 100Mbit/s
connections and 2.5MHz on 10Mbit/s connections - we don't need any
special configuration for that).

Round the divider to the closest value to prevent this issue on Meson8b.
This means we'll now end up with a clock rate for the RGMII TX clock of
125001197Hz (= 125MHz plus 1197Hz), which is close-enough to 125MHz.
This has no effect on the Meson GX SoCs since there fclk_div2 is used as
input clock, which has a rate of 1000MHz (and thus is divisible cleanly
to 250MHz and 125MHz).

Fixes: 566e8251625304 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC")
Reported-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: stmmac: dwmac-meson8b: fix internal RGMII clock configuration
Martin Blumenstingl [Mon, 15 Jan 2018 17:10:13 +0000 (18:10 +0100)]
net: stmmac: dwmac-meson8b: fix internal RGMII clock configuration

Tests (using an oscilloscope and an Odroid-C1 board with a RTL8211F
RGMII PHY) have shown that the PRG_ETH0 register behaves as follows:
- bit 4 is a mux to choose between two parent clocks. according to the
  public S805 datasheet the only supported parent clock is MPLL2 (this
  was not verified using the oscilloscope).
  The public S805/S905 datasheet claims that this bit is reserved.
- bits 9:7 control a one-based divider (register value 1 means "divide
  by 1", etc.) for the input clock. we call this clock the "m250_div"
  clock because it's value is always supposed to be (close to) 250MHz
  (see below for an explanation).
  The description in the public S805/S905 datasheet is a bit cryptic,
  but it comes down to "input clock = 250MHz * value" (which could also
  be expressed as "250MHz = input clock / value")
- there seems to be an internal fixed divide-by-2 clock which takes the
  output from the m250_div and divides it by 2. This is not unusual on
  Amlogic SoCs, since the SDIO (MMC) driver also uses an internal fixed
  divide-by-2 clock.
  This is not documented in the public S805/S905 datasheet
- bit 10 controls a gate clock which enables or disables the RGMII TX
  clock (which is an output on the MAC/SoC and an input in the PHY). we
  call this the "rgmii_tx_en" clock. if this bit is set to "0" the RGMII
  TX clock output is close to 0
  The description for this bit in the public S805/S905 datasheet is
  "Generate 25MHz clock for PHY". Based on these tests it's believed
  that this is wrong, and should probably read "Generate the 125MHz
  RGMII TX clock for the PHY"
- the RGMII TX clock has to be set to 125MHz - the IP block adjusts the
  output (automatically) depending on the line speed (RGMII specifies
  that Gbit connections use a 125MHz clock, 100Mbit/s connections use a
  25MHz clock and 10Mbit/s connections use a 2.5MHz clock. only Gbit and
  100Mbit/s were tested with an oscilloscope). Due to the requirement
  that this clock always has to be set to 125MHz and due to the fixed
  divide-by-2 parent clock this means that m250_div will always end up
  with a rate of (close to) 250MHz.
- bits 6:5 are the TX delay, which is also named "clock phase" in some
  of Amlogic's older GPL kernel sources.

The PHY also has an XTAL_IN pin where a 25MHz clock has to be provided.
Tests with the oscilloscope have shown that this is routed to a crystal
right next to the RTL8211F PHY. The same seems to be true on the Khadas
VIM2 (which uses a GXM SoC) board - however the 25MHz crystal is on the
other side of the PCB there.

This updates the clocks in the dwmac-meson8b driver by replacing the
"m25_div" with the "rgmii_tx_en" clock and additionally introducing a
fixed divide-by-2 clock between "m250_div" and "rgmii_tx_en".
Now we also need to set a frequency of 125MHz on the RGMII clock
(opposed to the 25MHz we set before, with that non-existing
divide-by-5-or-10 divider).

Special thanks go to Linus Lüssing for testing the various bits and
checking the results with an oscilloscope on his Odroid-C1!

Fixes: 566e8251625304 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC")
Reported-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: stmmac: dwmac-meson8b: only configure the clocks in RGMII mode
Martin Blumenstingl [Mon, 15 Jan 2018 17:10:12 +0000 (18:10 +0100)]
net: stmmac: dwmac-meson8b: only configure the clocks in RGMII mode

Neither the m25_div_clk nor the m250_div_clk or m250_mux_clk are used in
RMII mode. The m25_div_clk output is routed to the RGMII PHY's "RGMII
clock".
This means that we don't need to configure the clocks in RMII mode. The
driver however did this - with no effect since the clocks are not routed
to the PHY in RMII mode.

While here also rename meson8b_init_clk to meson8b_init_rgmii_tx_clk to
make it easier to understand the code.

Fixes: 566e8251625304 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: sched: red: don't reset the backlog on every stat dump
Jakub Kicinski [Mon, 15 Jan 2018 04:01:26 +0000 (20:01 -0800)]
net: sched: red: don't reset the backlog on every stat dump

Commit 0dfb33a0d7e2 ("sch_red: report backlog information") copied
child's backlog into RED's backlog.  Back then RED did not maintain
its own backlog counts.  This has changed after commit 2ccccf5fb43f
("net_sched: update hierarchical backlog too") and commit d7f4f332f082
("sch_red: update backlog as well").  Copying is no longer necessary.

Tested:

$ tc -s qdisc show dev veth0
qdisc red 1: root refcnt 2 limit 400000b min 30000b max 30000b ecn
 Sent 20942 bytes 221 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 1260b 14p requeues 14
  marked 0 early 0 pdrop 0 other 0
qdisc tbf 2: parent 1: rate 1Kbit burst 15000b lat 3585.0s
 Sent 20942 bytes 221 pkt (dropped 0, overlimits 138 requeues 0)
 backlog 1260b 14p requeues 14

Recently RED offload was added.  We need to make sure drivers don't
depend on resetting the stats.  This means backlog should be treated
like any other statistic:

  total_stat = new_hw_stat - prev_hw_stat;

Adjust mlxsw.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Nogah Frankel <nogahf@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx5: Fix build break
Saeed Mahameed [Wed, 17 Jan 2018 07:54:38 +0000 (09:54 +0200)]
net/mlx5: Fix build break

The latest merge between net and net-next introduced a complier assert in
mlx5 driver.  In hca_cap_bits older fields are kept along with newer
fields that should have replaced them.

Fixes: c02b3741eb99 ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agortlwifi: btcoex: add rfe_type parameter to btcoex
Ping-Ke Shih [Wed, 17 Jan 2018 06:15:30 +0000 (14:15 +0800)]
rtlwifi: btcoex: add rfe_type parameter to btcoex

btcoex configure antenna by rfe_type that is RF type programmed in efuse.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agortlwifi: btcoex: Add common function for qeurying BT information
Ping-Ke Shih [Wed, 17 Jan 2018 06:15:29 +0000 (14:15 +0800)]
rtlwifi: btcoex: Add common function for qeurying BT information

This commit implement the common function to sort old features, and add
more new features that are get_supported_feature, get_supported_version,
get_ant_det_val, ble_scan_type, ble_scan_para, bt_dev_info,
forbidden_slot_val, afh_map and etc.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agortlwifi: btcoex: Remove typedef statements
Larry Finger [Wed, 17 Jan 2018 06:15:28 +0000 (14:15 +0800)]
rtlwifi: btcoex: Remove typedef statements

Each of these typedefs are only referenced in a single location later
in this header. Thus, they are easily removed.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agortlwifi: btcoex: Remove global variables from btcoex
Ping-Ke Shih [Wed, 17 Jan 2018 06:15:27 +0000 (14:15 +0800)]
rtlwifi: btcoex: Remove global variables from btcoex

Remove global variables, so btcoexist can support multiple instances
simultaneously.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agortlwifi: btcoex: Add power_on_setting routine
Ping-Ke Shih [Wed, 17 Jan 2018 06:15:26 +0000 (14:15 +0800)]
rtlwifi: btcoex: Add power_on_setting routine

After mac power-on sequence, wifi will start to work so notify btcoex the
event to configure registers especially related to antenna. This will not
only help to assign antenna but also to yield better user experience.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agortlwifi: unlink bss when un-association
Tsang-Shian Lin [Wed, 17 Jan 2018 06:15:23 +0000 (14:15 +0800)]
rtlwifi: unlink bss when un-association

When AP change bandwidth setting from 20M to 40M, STA may use old 20M AP
information to association with AP. Driver unlink bss in the
.bss_info_changed of ieee80211_ops to make sure that later scan can get
correct AP bandwidth capability.

Signed-off-by: Tsang-Shian Lin <thlin@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agortlwifi: fix scan channel 1 fail after IPS
Ping-Ke Shih [Wed, 17 Jan 2018 06:15:22 +0000 (14:15 +0800)]
rtlwifi: fix scan channel 1 fail after IPS

If there is no connection, driver will enter IPS state. Meanwhile, it
fails to scan channel 1 by the command 'iw dev wlan0 scan freq 2412',
because hardware channel setting lose after IPS. Thus, restore channel
setting from hw->conf.channel set by last rtl_op_config().

Signed-off-by: Tim Lee <timlee@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agortlwifi: Use mutex to replace spin_lock to protect IPS and LPS
Ping-Ke Shih [Wed, 17 Jan 2018 06:15:21 +0000 (14:15 +0800)]
rtlwifi: Use mutex to replace spin_lock to protect IPS and LPS

Enter/leavel IPS and LPS are large critical section, and they can't use
sleep function because running in atomic-context, which own a spin_lock.
In commit ba9f93f82aba ("rtlwifi: Fix enter/exit power_save"), it moves
LPS functions to thread-context, so this commit can simply change LPS's
spin lock to mutex.
Considering IPS functions, rtl_ips_nic_on() may be called by TX tasklet
(softirq-context) that check whether packet is auth frame. Fortunately,
current mac80211 will ask driver to leave IPS using op_config with
changed flag IEEE80211_CONF_CHANGE_IDLE, before issuing auth frame, so
IPS functions can run in thread-context and use mutex to protect critical
section, too.
Also, this commit removes some useless spin locks.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agomt76: fix possible NULL pointer dereferencing in mt76x2_mac_write_txwi()
Lorenzo Bianconi [Thu, 14 Dec 2017 12:03:17 +0000 (13:03 +0100)]
mt76: fix possible NULL pointer dereferencing in mt76x2_mac_write_txwi()

Verify wcid is not NULL before dereferencing the pointer to initialize
txwi rate/power info

Fixes: 7bc04215a66b ("mt76: add driver code for MT76x2e")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agomt76: fix possible NULL pointer dereferencing in mt76x2_ampdu_action()
Lorenzo Bianconi [Thu, 14 Dec 2017 12:03:16 +0000 (13:03 +0100)]
mt76: fix possible NULL pointer dereferencing in mt76x2_ampdu_action()

Initialize mt76_txq pointer after ieee80211_txq pointer check.
Remove space after the pointer cast

Fixes: 7bc04215a66b ("mt76: add driver code for MT76x2e")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Wed, 17 Jan 2018 05:00:25 +0000 (00:00 -0500)]
Merge git://git./linux/kernel/git/davem/net

Overlapping changes all over.

The mini-qdisc bits were a little bit tricky, however.

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
David S. Miller [Wed, 17 Jan 2018 03:42:14 +0000 (22:42 -0500)]
Merge git://git./linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2018-01-17

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

The main changes are:

1) Add initial BPF map offloading for nfp driver. Currently only
   programs were supported so far w/o being able to access maps.
   Offloaded programs are right now only allowed to perform map
   lookups, and control path is responsible for populating the
   maps. BPF core infrastructure along with nfp implementation is
   provided, from Jakub.

2) Various follow-ups to Josef's BPF error injections. More
   specifically that includes: properly check whether the error
   injectable event is on function entry or not, remove the percpu
   bpf_kprobe_override and rather compare instruction pointer
   with original one, separate error-injection from kprobes since
   it's not limited to it, add injectable error types in order to
   specify what is the expected type of failure, and last but not
   least also support the kernel's fault injection framework, all
   from Masami.

3) Various misc improvements and cleanups to the libbpf Makefile.
   That is, fix permissions when installing BPF header files, remove
   unused variables and functions, and also install the libbpf.h
   header, from Jesper.

4) When offloading to nfp JIT and the BPF insn is unsupported in the
   JIT, then reject right at verification time. Also fix libbpf with
   regards to ELF section name matching by properly treating the
   program type as prefix. Both from Quentin.

5) Add -DPACKAGE to bpftool when including bfd.h for the disassembler.
   This is needed, for example, when building libfd from source as
   bpftool doesn't supply a config.h for bfd.h. Fix from Jiong.

6) xdp_convert_ctx_access() is simplified since it doesn't need to
   set target size during verification, from Jesper.

7) Let bpftool properly recognize BPF_PROG_TYPE_CGROUP_DEVICE
   program types, from Roman.

8) Various functions in BPF cpumap were not declared static, from Wei.

9) Fix a double semicolon in BPF samples, from Luis.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Wed, 17 Jan 2018 00:47:40 +0000 (16:47 -0800)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma

Pull rdma fixes from Doug Ledford:
 "We had a few more items creep up over the last week. Given we are in
  -rc8, these are obviously limited to bugs that have a big downside and
  for which we are certain of the fix.

  The first is a straight up oops bug that all you have to do is read
  the code to see it's a guaranteed 100% oops bug.

  The second is a use-after-free issue. We get away lucky if the queue
  we are shutting down is empty, but if it isn't, we can end up oopsing.
  We really need to drain the queue before destroying it.

  The final one is an issue with bad user input causing us to access our
  port array out of bounds. While fixing the array out of bounds issue,
  it was noticed that the original code did the same thing twice (the
  call to rdma_ah_set_port_num()), so its removal is not balanced by a
  readd elsewhere, it was already where it needed to be in addition to
  where it didn't need to be.

  Summary:

   - Oops fix in hfi1 driver

   - use-after-free issue in iser-target

   - use of user supplied array index without proper checking"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/mlx5: Fix out-of-bound access while querying AH
  IB/hfi1: Prevent a NULL dereference
  iser-target: Fix possible use-after-free in connection establishment error

6 years agoMerge branch 'bpf-libbpf-cleanups'
Daniel Borkmann [Wed, 17 Jan 2018 00:18:11 +0000 (01:18 +0100)]
Merge branch 'bpf-libbpf-cleanups'

Jesper Dangaard Brouer says:

====================
This patchset contains some small improvements and cleanup for
the Makefile in tools/lib/bpf/.

It worries me that the libbpf.so shared library is not versioned,
but it not addressed in this patchset.
====================

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agolibbpf: Makefile set specified permission mode
Jesper Dangaard Brouer [Tue, 16 Jan 2018 23:20:40 +0000 (00:20 +0100)]
libbpf: Makefile set specified permission mode

The third parameter to do_install was not used by $(INSTALL) command.
Fix this by only setting the -m option when the third parameter is supplied.

The use of a third parameter was introduced in commit  eb54e522a000 ("bpf:
install libbpf headers on 'make install'").

Without this change, the header files are install as executables files (755).

Fixes: eb54e522a000 ("bpf: install libbpf headers on 'make install'")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>