Commit Graph

874206 Commits

Author SHA1 Message Date
Wei Yongjun
b97fa0b544 ptp: ptp_clockmatrix: Fix missing unlock on error in idtcm_probe()
Add the missing unlock before return from function idtcm_probe()
in the error handling case.

Fixes: 3a6ba7dc77 ("ptp: Add a ptp clock driver for IDT ClockMatrix.")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Vincent Cheng <vincent.cheng.xh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 21:19:59 -08:00
David S. Miller
53ba60afb1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for net:

1) Missing register size validation in bitwise and cmp offloads.

2) Fix error code in ip_set_sockfn_get() when copy_to_user() fails,
   from Dan Carpenter.

3) Oneliner to copy MAC address in IPv6 hash:ip,mac sets, from
   Stefano Brivio.

4) Missing policy validation in ipset with NL_VALIDATE_STRICT,
   from Jozsef Kadlecsik.

5) Fix unaligned access to private data area of nf_tables instructions,
   from Lukas Wunner.

6) Relax check for object updates, reported as a regression by
   Eric Garver, patch from Fernando Fernandez Mancera.

7) Crash on ebtables dnat extension when used from the output path.
   From Florian Westphal.

8) Fix bogus EOPNOTSUPP when updating basechain flags.

9) Fix bogus EBUSY when updating a basechain that is already offloaded.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 21:16:55 -08:00
Tuong Lien
d0d605c5e1 tipc: eliminate the dummy packet in link synching
When preparing tunnel packets for the link failover or synchronization,
as for the safe algorithm, we added a dummy packet on the pair link but
never sent it out. In the case of failover, the pair link will be reset
anyway. But for link synching, it will always result in retransmission
of the dummy packet after that.
We have also observed that such the retransmission at the early stage
when a new node comes in a large cluster will take some time and hard
to be done, leading to the repeated retransmit failures and the link is
reset.

Since in commit 4929a932be ("tipc: optimize link synching mechanism")
we have already built a dummy 'TUNNEL_PROTOCOL' message on the new link
for the synchronization, there's no need for the dummy on the pair one,
this commit will skip it when the new mechanism takes in place. In case
nothing exists in the pair link's transmq, the link synching will just
start and stop shortly on the peer side.

The patch is backward compatible.

Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Tested-by: Hoang Le <hoang.h.le@dektech.com.au>
Signed-off-by: Tuong Lien <tuong.t.lien@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 21:16:02 -08:00
David S. Miller
3924f72a3a Merge branch 'lwtunnel-add-ip-and-ip6-options-setting-and-dumping'
Xin Long says:

====================
lwtunnel: add ip and ip6 options setting and dumping

With this patchset, users can configure options by ip route encap
for geneve, vxlan and ersapn lwtunnel, like:

  # ip r a 1.1.1.0/24 encap ip id 1 geneve class 0 type 0 \
    data "1212121234567890" dst 10.1.0.2 dev geneve1

  # ip r a 1.1.1.0/24 encap ip id 1 vxlan gbp 456 \
    dst 10.1.0.2 dev erspan1

  # ip r a 1.1.1.0/24 encap ip id 1 erspan ver 1 idx 123 \
    dst 10.1.0.2 dev erspan1

iproute side patch is attached on the reply of this mail.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 21:14:22 -08:00
Xin Long
b0a21810bd lwtunnel: add options setting and dumping for erspan
Based on the code framework built on the last patch, to
support setting and dumping for vxlan, we only need to
add ip_tun_parse_opts_erspan() for .build_state and
ip_tun_fill_encap_opts_erspan() for .fill_encap and
if (tun_flags & TUNNEL_ERSPAN_OPT) for .get_encap_size.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 21:14:22 -08:00
Xin Long
edf31cbb15 lwtunnel: add options setting and dumping for vxlan
Based on the code framework built on the last patch, to
support setting and dumping for vxlan, we only need to
add ip_tun_parse_opts_vxlan() for .build_state and
ip_tun_fill_encap_opts_vxlan() for .fill_encap and
if (tun_flags & TUNNEL_VXLAN_OPT) for .get_encap_size.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 21:14:21 -08:00
Xin Long
4ece477870 lwtunnel: add options setting and dumping for geneve
To add options setting and dumping, .build_state(), .fill_encap() and
.get_encap_size() in ip_tun_lwt_ops needs to be extended:

ip_tun_build_state():
  ip_tun_parse_opts():
    ip_tun_parse_opts_geneve()

ip_tun_fill_encap_info():
  ip_tun_fill_encap_opts():
    ip_tun_fill_encap_opts_geneve()

ip_tun_encap_nlsize()
   ip_tun_opts_nlsize():
     if (tun_flags & TUNNEL_GENEVE_OPT)

ip_tun_parse_opts(), ip_tun_fill_encap_opts() and ip_tun_opts_nlsize()
processes LWTUNNEL_IP_OPTS.

ip_tun_parse_opts_geneve(), ip_tun_fill_encap_opts_geneve() and
if (tun_flags & TUNNEL_GENEVE_OPT) processes LWTUNNEL_IP_OPTS_GENEVE.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 21:14:21 -08:00
Xin Long
0eb8eb2f96 lwtunnel: add options process for cmp_encap
When comparing two tun_info, dst_cache member should have been skipped,
as dst_cache is a per cpu pointer and they are always different values
even in two tun_info with the same keys.

So this patch is to skip dst_cache member and compare the key, mode and
options_len only. For the future opts setting support, also to compare
options.

Fixes: 2d79849903 ("lwtunnel: ip tunnel: fix multiple routes with different encap")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 21:14:21 -08:00
Xin Long
f52f11ec8a lwtunnel: add options process for arp request
Without options copied to the dst tun_info in iptunnel_metadata_reply()
called by arp_process for handling arp_request, the generated arp_reply
packet may be dropped or sent out with wrong options for some tunnels
like erspan and vxlan, and the traffic will break.

Fixes: 63d008a4e9 ("ipv4: send arp replies to the correct tunnel")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 21:14:21 -08:00
Alex Deucher
2c409ba81b drm/radeon: fix si_enable_smc_cac() failed issue
Need to set the dte flag on this asic.

Port the fix from amdgpu:
5cb818b861 ("drm/amd/amdgpu: fix si_enable_smc_cac() failed issue")

Reviewed-by: Yong Zhao <yong.zhao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2019-11-06 22:06:23 -05:00
Alex Deucher
77a3160221 drm/amdgpu/renoir: move gfxoff handling into gfx9 module
To properly handle the option parsing ordering.

Reviewed-by: Yong Zhao <yong.zhao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-06 22:06:23 -05:00
changzhu
440a7a54e7 drm/amdgpu: add warning for GRBM 1-cycle delay issue in gfx9
It needs to add warning to update firmware in gfx9
in case that firmware is too old to have function to
realize dummy read in cp firmware.

Signed-off-by: changzhu <Changfeng.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-06 22:06:23 -05:00
changzhu
589b64a7e3 drm/amdgpu: add dummy read by engines for some GCVM status registers in gfx10
The GRBM register interface is now capable of bursting 1 cycle per
register wr->wr, wr->rd much faster than previous muticycle per
transaction done interface.  This has caused a problem where
status registers requiring HW to update have a 1 cycle delay, due
to the register update having to go through GRBM.

For cp ucode, it has realized dummy read in cp firmware.It covers
the use of WAIT_REG_MEM operation 1 case only.So it needs to call
gfx_v10_0_wait_reg_mem in gfx10. Besides it also needs to add warning to
update firmware in case firmware is too old to have function to realize
dummy read in cp firmware.

For sdma ucode, it hasn't realized dummy read in sdma firmware. sdma is
moved to gfxhub in gfx10. So it needs to add dummy read in driver
between amdgpu_ring_emit_wreg and amdgpu_ring_emit_reg_wait for sdma_v5_0.

Signed-off-by: changzhu <Changfeng.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-06 22:06:23 -05:00
Evan Quan
6a299d7aaa drm/amdgpu: register gpu instance before fan boost feature enablment
Otherwise, the feature enablement will be skipped due to wrong count.

Fixes: beff74bc6e ("drm/amdgpu: fix a race in GPU reset with IB test (v2)")
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-06 22:06:23 -05:00
Kevin Wang
38264de0dc drm/amd/swSMU: fix smu workload bit map error
fix workload bit (WORKLOAD_PPLIB_COMPUTE_BIT) map error
on vega20 and navi asic.

fix commit:
drm/amd/powerplay: add function get_workload_type_map for swsmu

Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-11-06 22:06:23 -05:00
Ursula Braun
98f3375505 net/smc: fix ethernet interface refcounting
If a pnet table entry is to be added mentioning a valid ethernet
interface, but an invalid infiniband or ISM device, the dev_put()
operation for the ethernet interface is called twice, resulting
in a negative refcount for the ethernet interface, which disables
removal of such a network interface.

This patch removes one of the dev_put() calls.

Fixes: 890a2cb4a9 ("net/smc: rework pnet table")
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 17:44:32 -08:00
Hoang Le
426071f1f3 tipc: reduce sensitive to retransmit failures
With huge cluster (e.g >200nodes), the amount of that flow:
gap -> retransmit packet -> acked will take time in case of STATE_MSG
dropped/delayed because a lot of traffic. This lead to 1.5 sec tolerance
value criteria made link easy failure around 2nd, 3rd of failed
retransmission attempts.

Instead of re-introduced criteria of 99 faled retransmissions to fix the
issue, we increase failure detection timer to ten times tolerance value.

Fixes: 77cf8edbc0 ("tipc: simplify stale link failure criteria")
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Jon
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 17:37:43 -08:00
Hoang Le
6708ef7792 tipc: update cluster capabilities if node deleted
There are two improvements when re-calculate cluster capabilities:

- When deleting a specific down node, need to re-calculate.
- In tipc_node_cleanup(), do not need to re-calculate if node
is still existing in cluster.

Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Jon
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 17:37:43 -08:00
Francesco Ruggeri
3c28d99fc6 selftest: net: add some traceroute tests
Added the following traceroute tests.

IPV6:
Verify that in this scenario

       ------------------------ N2
        |                    |
      ------              ------  N3  ----
      | R1 |              | R2 |------|H2|
      ------              ------      ----
        |                    |
       ------------------------ N1
                 |
                ----
                |H1|
                ----

where H1's default route goes through R1 and R1's default route goes
through R2 over N2, traceroute6 from H1 to H2 reports R2's address
on N2 and not N1.

IPV4:
Verify that traceroute from H1 to H2 shows 1.0.1.1 in this scenario

                   1.0.3.1/24
---- 1.0.1.3/24    1.0.1.1/24 ---- 1.0.2.1/24    1.0.2.4/24 ----
|H1|--------------------------|R1|--------------------------|H2|
----            N1            ----            N2            ----

where net.ipv4.icmp_errors_use_inbound_ifaddr is set on R1 and
1.0.3.1/24 and 1.0.1.1/24 are respectively R1's primary and secondary
address on N1.

v2: fixed some typos, and have bridge in R1 instead of R2 in IPV6 test.

Signed-off-by: Francesco Ruggeri <fruggeri@arista.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 17:35:49 -08:00
David S. Miller
9990a79d8f Merge branch 'net-tls-add-a-TX-lock'
Jakub Kicinski says:

====================
net/tls: add a TX lock

Some time ago Pooja and Mallesham started reporting crashes with
an async accelerator. After trying to poke the existing logic into
shape I came to the conclusion that it can't be trusted, and to
preserve our sanity we should just add a lock around the TX side.

First patch removes the sk_write_pending checks from the write
space callbacks. Those don't seem to have a logical justification.

Patch 2 adds the TX lock and patch 3 associated test (which should
hang with current net).

Mallesham reports that even with these fixes applied the async
accelerator workload still occasionally hangs waiting for socket
memory. I suspect that's strictly related to the way async crypto
is integrated in TLS, so I think we should get these into net or
net-next and move from there.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 17:33:32 -08:00
Jakub Kicinski
41098af59d selftests/tls: add test for concurrent recv and send
Add a test which spawns 16 threads and performs concurrent
send and recv calls on the same socket.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 17:33:32 -08:00
Jakub Kicinski
79ffe6087e net/tls: add a TX lock
TLS TX needs to release and re-acquire the socket lock if send buffer
fills up.

TLS SW TX path currently depends on only allowing one thread to enter
the function by the abuse of sk_write_pending. If another writer is
already waiting for memory no new ones are allowed in.

This has two problems:
 - writers don't wake other threads up when they leave the kernel;
   meaning that this scheme works for single extra thread (second
   application thread or delayed work) because memory becoming
   available will send a wake up request, but as Mallesham and
   Pooja report with larger number of threads it leads to threads
   being put to sleep indefinitely;
 - the delayed work does not get _scheduled_ but it may _run_ when
   other writers are present leading to crashes as writers don't
   expect state to change under their feet (same records get pushed
   and freed multiple times); it's hard to reliably bail from the
   work, however, because the mere presence of a writer does not
   guarantee that the writer will push pending records before exiting.

Ensuring wakeups always happen will make the code basically open
code a mutex. Just use a mutex.

The TLS HW TX path does not have any locking (not even the
sk_write_pending hack), yet it uses a per-socket sg_tx_data
array to push records.

Fixes: a42055e8d2 ("net/tls: Add support for async encryption of records for performance")
Reported-by: Mallesham  Jatharakonda <mallesh537@gmail.com>
Reported-by: Pooja Trivedi <poojatrivedi@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 17:33:32 -08:00
Jakub Kicinski
02b1fa07bb net/tls: don't pay attention to sk_write_pending when pushing partial records
sk_write_pending being not zero does not guarantee that partial
record will be pushed. If the thread waiting for memory times out
the pending record may get stuck.

In case of tls_device there is no path where parial record is
set and writer present in the first place. Partial record is
set only in tls_push_sg() and tls_push_sg() will return an
error immediately. All tls_device callers of tls_push_sg()
will return (and not wait for memory) if it failed.

Fixes: a42055e8d2 ("net/tls: Add support for async encryption of records for performance")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 17:33:32 -08:00
Anirudh Venkataramanan
039c60c597 ice: Fix return value when SR-IOV is not supported
When the device is not capable of supporting SR-IOV -ENODEV is being
returned; -EOPNOTSUPP is more appropriate.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Brett Creeley
ff010eca05 ice: Rename VF function ice_vc_dis_vf to match its behavior
ice_vc_dis_vf() tells iavf that it's going to perform a reset
and then performs a software reset. This is misleading based on
the function name because the VF does not get disabled. So fix
this by changing the name to ice_vc_reset_vf().

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Krzysztof Kazimierczak
133f4883f9 ice: Get rid of ice_cleanup_header
ice_cleanup_hdrs() has been stripped of most of its content, it only serves
as a wrapper for eth_skb_pad(). We can get rid of it altogether and
simplify the codebase.

Signed-off-by: Krzysztof Kazimierczak <krzysztof.kazimierczak@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Paul Greenwalt
e18ff11818 ice: print PCI link speed and width
Print message to inform user of PCI link speed and width.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Paul Greenwalt
5878589dc3 ice: print unsupported module message
Print message to inform user if unsupported module is inserted, and
extend the topology / configuration detection.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Mitch Williams
395594563b ice: write register with correct offset
The VF_MBX_ARQLEN register array is per-PF, not global, so we should not
use the absolute VF ID as an index. Instead, use the per-PF VF ID.

This fixes an issue with VFs on PFs other than 0 not seeing reset.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Michal Swiatkowski
eb0ee8abfe ice: Check for null pointer dereference when setting rings
Without this check rebuild vsi can lead to kernel panic.

Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Michal Swiatkowski
4e56802e0e ice: save PCI state in probe
Save state to correct recovery memory and I/O BARs address
after PCI bus reset. Without this after reset kernel can't
read device registers.

Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Dave Ertman
b2883dfe1f ice: Adjust DCB INIT for SW mode
Adjust ice_init_dcb to set the is_sw_lldp boolean
in the case where the FW has been detected to be
in an untenable state such that the driver
should forcibly make sure it is off.

This will ensure that the FW is in a known state.

Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Bruce Allan
c6012ac1c3 ice: fix driver unload flow
As part of the driver unload flow, a PF reset is issued which may still
cause an interrupt to be generated by the device.  Do not clear the
interrupt scheme until the reset is complete and there are no pending
transactions otherwise a hardware error may occur.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Paul Greenwalt
cfbf13674b ice: handle DCBx non-contiguous TC request
If DCBx request non-contiguous TCs, then the driver will configure default
traffic class (TC0). This is done to prevent Tx hang since the driver
currently does not support non-contiguous TC.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Md Fahad Iqbal Polash
031f214752 ice: Update Boot Configuration Section read of NVM
The Boot Configuration Section Block has been moved to the Preserved Field
Area (PFA) of NVM. Update the NVM reads that involves Boot Configuration
Section.

Signed-off-by: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
Scott W Taylor
a012dca9f7 ice: add ethtool -m support for reading i2c eeprom modules
Implement ethtool -m support to read eeprom data from SFP/QSFP modules.

Signed-off-by: Scott W Taylor <scott.w.taylor@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-11-06 16:41:45 -08:00
David S. Miller
3edcc56801 Merge branch 'net-various-KCSAN-inspired-fixes'
Eric Dumazet says:

====================
net: various KCSAN inspired fixes

This is a series of minor fixes, mostly dealing with
lockless accesses to socket 'sk_ack_backlog', 'sk_max_ack_backlog'
ane neighbour 'confirmed' fields.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 16:14:48 -08:00
Eric Dumazet
099ecf59f0 net: annotate lockless accesses to sk->sk_max_ack_backlog
sk->sk_max_ack_backlog can be read without any lock being held
at least in TCP/DCCP cases.

We need to use READ_ONCE()/WRITE_ONCE() to avoid load/store tearing
and/or potential KCSAN warnings.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 16:14:48 -08:00
Eric Dumazet
288efe8606 net: annotate lockless accesses to sk->sk_ack_backlog
sk->sk_ack_backlog can be read without any lock being held.
We need to use READ_ONCE()/WRITE_ONCE() to avoid load/store tearing
and/or potential KCSAN warnings.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 16:14:48 -08:00
Eric Dumazet
7976a11b30 net: use helpers to change sk_ack_backlog
Writers are holding a lock, but many readers do not.

Following patch will add appropriate barriers in
sk_acceptq_removed() and sk_acceptq_added().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 16:14:48 -08:00
Eric Dumazet
25c7a6d1f9 net: avoid potential false sharing in neighbor related code
There are common instances of the following construct :

	if (n->confirmed != now)
		n->confirmed = now;

A C compiler could legally remove the conditional.

Use READ_ONCE()/WRITE_ONCE() to avoid this problem.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 16:14:48 -08:00
Eric Dumazet
3828a93f5c inet_diag: use jiffies_delta_to_msecs()
Use jiffies_delta_to_msecs() to avoid reporting 'infinite'
timeouts and to cleanup code.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 16:14:48 -08:00
Eric Dumazet
9d027e3a83 net: neigh: use long type to store jiffies delta
A difference of two unsigned long needs long storage.

Fixes: c7fb64db00 ("[NETLINK]: Neighbour table configuration and statistics via rtnetlink")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 16:14:48 -08:00
Tejun Heo
b0814361a2 blkcg: make blkcg_print_stat() print stats only for online blkgs
blkcg_print_stat() iterates blkgs under RCU and doesn't test whether
the blkg is online.  This can call into pd_stat_fn() on a pd which is
still being initialized leading to an oops.

The heaviest operation - recursively summing up rwstat counters - is
already done while holding the queue_lock.  Expand queue_lock to cover
the other operations and skip the blkg if it isn't online yet.  The
online state is protected by both blkcg and queue locks, so this
guarantees that only online blkgs are processed.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Roman Gushchin <guro@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Fixes: 903d23f0a3 ("blk-cgroup: allow controllers to output their own stats")
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-06 17:08:38 -07:00
Rob Herring
105401b659 drm/shmem: Add docbook comments for drm_gem_shmem_object madvise fields
Add missing docbook comments to madvise fields in struct
drm_gem_shmem_object which fixes these warnings:

include/drm/drm_gem_shmem_helper.h:87: warning: Function parameter or member 'madv' not described in 'drm_gem_shmem_object'
include/drm/drm_gem_shmem_helper.h:87: warning: Function parameter or member 'madv_list' not described in 'drm_gem_shmem_object'

Fixes: 17acb9f35e ("drm/shmem: Add madvise state and purge helpers")
Reported-by: Sean Paul <sean@poorly.run>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101153754.22803-1-robh@kernel.org
2019-11-06 17:57:42 -06:00
Vladimir Oltean
17fdd7638c net: mscc: ocelot: fix __ocelot_rmw_ix prototype
The "read-modify-write register index" function is declared with a
confusing prototype: the "mask" and "reg" arguments are swapped.

Fortunately, this does not affect callers so far. Both arguments are
u32, and the wrapper macros (ocelot_rmw_ix etc) have the arguments in
the correct order (the one from ocelot_io.c).

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 15:34:12 -08:00
David S. Miller
9f8f35076c Merge branch 'Bonding-fixes-for-Ocelot-switch'
Vladimir Oltean says:

====================
Bonding fixes for Ocelot switch

This series fixes 2 issues with bonding in a system that integrates the
ocelot driver, but the ports that are bonded do not actually belong to
ocelot.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 15:16:17 -08:00
Claudiu Manoil
3b3eed8eec net: mscc: ocelot: fix NULL pointer on LAG slave removal
lag_upper_info may be NULL on slave removal.

Fixes: dc96ee3730 ("net: mscc: ocelot: add bonding support")
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 15:16:17 -08:00
Claudiu Manoil
7afb3e575e net: mscc: ocelot: don't handle netdev events for other netdevs
The check that the event is actually for this device should be moved
from the "port" handler to the net device handler.

Otherwise the port handler will deny bonding configuration for other
net devices in the same system (like enetc in the LS1028A) that don't
have the lag_upper_info->tx_type restriction that ocelot has.

Fixes: dc96ee3730 ("net: mscc: ocelot: add bonding support")
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-06 15:16:17 -08:00
Dmytro Linkin
950d3af70e net/mlx5e: Use correct enum to determine uplink port
For vlan push action, if eswitch flow source capability is enabled, flow
source value compared with MLX5_VPORT_UPLINK enum, to determine uplink
port. This lead to syndrome in dmesg if try to add vlan push action.
For example:
 $ tc filter add dev vxlan0 ingress protocol ip prio 1 flower \
       enc_dst_port 4789 \
       action tunnel_key unset pipe \
       action vlan push id 20 pipe \
       action mirred egress redirect dev ens1f0_0
 $ dmesg
 ...
 [ 2456.883693] mlx5_core 0000:82:00.0: mlx5_cmd_check:756:(pid 5273): SET_FLOW_TABLE_ENTRY(0x936) op_mod(0x0) failed, status bad parameter(0x3), syndrome (0xa9c090)
Use the correct enum value MLX5_FLOW_CONTEXT_FLOW_SOURCE_UPLINK.

Fixes: bb204dcf39fe ("net/mlx5e: Determine source port properly for vlan push action")
Signed-off-by: Dmytro Linkin <dmitrolin@mellanox.com>
Reviewed-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-11-06 14:03:55 -08:00