Commit Graph

679557 Commits

Author SHA1 Message Date
Yan-Hsuan Chuang
0199103ea7 rtlwifi: btcoex: bind BT coex information with wifi driver
When initializing, gather BT information in struct btcoexist and
provide them to wifi driver.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 10:02:29 +03:00
Yan-Hsuan Chuang
7937f02d19 rtlwifi: btcoex: hook external functions for newer chips
Hook the external functions for newer ICs such as 8821a and 8192e.

Rename ex_halbtc8192e2ant_halt_notify to ex_btc8192e2ant_halt_notify.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 10:02:29 +03:00
Yan-Hsuan Chuang
60f44100ee rtlwifi: btcoex: add settings before the hardware is ready
When the hardware is turned on and in the initialization stage, the PTA
circuit is unstable. Hence we need to force some hardware settings to
make sure the PTA circuit work correctly, otherwise it may affect the
user's experience.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 10:02:28 +03:00
Yan-Hsuan Chuang
86f9ab2ef4 rtlwifi: btcoex: hook external PnP notify by chip for wifi driver
Hook the chip-specific PnP notify functions for the wifi driver to
notify btcoexistence.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 10:02:28 +03:00
Yan-Hsuan Chuang
6fbbc82adf rtlwifi: btcoex: settings before firmware is downloaded
The btcoex is sometimes unstable because there are some unexpected
behaviors before the firmware has been downloaded successfully.

Therefore we force the antenna path settings to avoid this, then let the
firmware control the btcoexistence when the firmware is ready.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 10:02:27 +03:00
Yan-Hsuan Chuang
753c953bae rtlwifi: btcoex: rename ex_halbtc*ant to ex_btc*ant
These external functions are for BT-coexistence, so remove the "hal"
prefix for consistancy.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 10:02:27 +03:00
Yan-Hsuan Chuang
d178b1321e rtlwifi: btcoex: add macros to check chip type
For some external functions that have hardware dependency, we need to
know the type of the hardware before invoking them.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 10:02:26 +03:00
Colin Ian King
bc0384eedb qtnfmac: check band before allocating cmd_skb to avoid resource leak
The current code allocates cmd_skb and then will leak this if band->band
is an illegal value. It is simpler to sanity check the band first before
allocating cmd_skb so that we don't have to free cmd_skb if an invalid
band occurs.

Detected by CoverityScan, CID#1437561 ("Resource Leak")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 10:01:36 +03:00
Colin Ian King
292c333300 mwifiex: make function mwifiex_ret_pkt_aggr_ctrl static
function mwifiex_ret_pkt_aggr_ctrl can be made static as it does not
need to be in global scope.

Cleans up sparse warning: "symbol 'mwifiex_ret_pkt_aggr_ctrl' was not
declared. Should it be static?"

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 10:00:45 +03:00
Peter S. Housel
5ea59db8a3 brcmfmac: Fix glom_skb leak in brcmf_sdiod_recv_chain
An earlier change to this function (3bdae81072) fixed a leak in the
case of an unsuccessful call to brcmf_sdiod_buffrw(). However, the
glom_skb buffer, used for emulating a scattering read, is never used
or referenced after its contents are copied into the destination
buffers, and therefore always needs to be freed by the end of the
function.

Fixes: 3bdae81072 ("brcmfmac: Fix glob_skb leak in brcmf_sdiod_recv_chain")
Fixes: a413e39a38 ("brcmfmac: fix brcmf_sdcard_recv_chain() for host without sg support")
Cc: stable@vger.kernel.org # 4.9.x-
Signed-off-by: Peter S. Housel <housel@acm.org>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 09:59:45 +03:00
Martin Michlmayr
a9507d5cfd brcmfmac: Fix grammar issue in error message
Fix grammar issue in error message about ISO3166.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 09:58:38 +03:00
Arend Van Spriel
69897f390b brcmfmac: add scheduled scan support for specified BSSIDs
Add support to handle scheduled scan request containing BSSID in
the matchsets. The firmware can send event upon finding BSSIDs and
SSIDs. To get these in one event the bit REPORT_SEPARATELY needed
to be removed from the flags in brcmf_pno_config().

Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 09:57:51 +03:00
Arend Van Spriel
42596f7614 brcmfmac: add mutex to protect pno requests
The request references kept in pno are accessed in user-space context
and in firmware event handler context. As such we need to protect it
with a lock. As both context allow sleep a mutex seems appropriate.

Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 09:57:50 +03:00
Arend Van Spriel
efc2c1fa8e brcmfmac: add support multi-scheduled scan
This change adds support for multi-scheduled scan in the driver. It
currently relies on g-scan support in firmware and will set struct
wiphy::max_sched_scan_reqs accordingly. This is limited to 16 concurrent
requests.

The firmware currently has a limit of 64 channels that can be configured
for all requests in total regardless whether there are duplicates. So if
a request uses 35 channels there are 29 channels left for another request.
When user-space does not specify any channels cfg80211 will add all
channels defined by the wiphy instance to the request, which makes
reaching the limit rather easy for dual-band devices.

Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-06-13 09:57:49 +03:00
Kalle Valo
833689044e First batch of iwlwifi driver patches 4.13
* Loads of FW API documentation improvements (for tools and htmldoc);
 * Continued work for the new A000 family;
 * Bumped the maximum supported FW API to 31;
 * Improve the differentiation between 8000, 9000 and A000 families;
 * A lot of fixes and cleanups here and there;
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Merge tag 'iwlwifi-next-for-kalle-2017-06-06' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

First batch of iwlwifi driver patches 4.13

* Loads of FW API documentation improvements (for tools and htmldoc);
* Continued work for the new A000 family;
* Bumped the maximum supported FW API to 31;
* Improve the differentiation between 8000, 9000 and A000 families;
* A lot of fixes and cleanups here and there;

kvalo: There were conflicts iwl_mvm_stop_device() and
iwl_mvm_tcool_set_cur_state(). The former was easy but latter needed more
thought. Apparently the mutex was taken too late, so I fixed so that the mutex
is taken first and then check for iwl_mvm_firmware_running().
2017-06-12 19:29:39 +03:00
David S. Miller
63a2f310d0 wireless-drivers-next patches for 4.13
The first pull request for 4.13. We have a new driver qtnfmac, but
 also rsi driver got a support for new firmware and supporting ath10k
 SDIO devices was started.
 
 Major changes:
 
 ath10k
 
 * add initial SDIO support (still work in progress)
 
 rsi
 
 * new loading for the new firmware version
 
 rtlwifi
 
 * final patches for the new btcoex support
 
 rt2x00
 
 * add device ID for Epson WN7512BEP
 
 qtnfmac
 
 * new driver for Quantenna QSR10G chipsets
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Merge tag 'wireless-drivers-next-for-davem-2017-06-12' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for 4.13

The first pull request for 4.13. We have a new driver qtnfmac, but
also rsi driver got a support for new firmware and supporting ath10k
SDIO devices was started.

Major changes:

ath10k

* add initial SDIO support (still work in progress)

rsi

* new loading for the new firmware version

rtlwifi

* final patches for the new btcoex support

rt2x00

* add device ID for Epson WN7512BEP

qtnfmac

* new driver for Quantenna QSR10G chipsets
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-12 10:14:29 -04:00
David S. Miller
073cf9e20c Merge branch 'udp-reduce-cache-pressure'
Paolo Abeni says:

====================
udp: reduce cache pressure

In the most common use case, many skb fields are not used by recvmsg(), and
the few ones actually accessed lays on cold cachelines, which leads to several
cache miss per packet.

This patch series attempts to reduce such misses with different strategies:
* caching the interesting fields in the scratched space
* avoid accessing at all uninteresting fields
* prefetching

Tested using the udp_sink program by Jesper[1] as the receiver, an h/w l4 rx
hash on the ingress nic, so that the number of ingress nic rx queues hit by the
udp traffic could be controlled via ethtool -L.

The udp_sink program was bound to the first idle cpu, to get more
stable numbers.

On a single numa node receiver:

nic rx queues           vanilla                 patched kernel      delta
1                       1850 kpps               1850 kpps           0%
2                       2370 kpps               2700 kpps           13.9%
16                      2000 kpps               2220 kpps           11%

[1] https://github.com/netoptimizer/network-testing/blob/master/src/udp_sink.c

v1 -> v2:
  - replaced secpath_reset() with skb_release_head_state()
  - changed udp_dev_scratch fields types to u{32,16} variant,
    replaced bitfield with bool

v2 -> v3:
  - no changes, tested against apachebench for performances regression
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-12 10:01:30 -04:00
Paolo Abeni
b65ac44674 udp: try to avoid 2 cache miss on dequeue
when udp_recvmsg() is executed, on x86_64 and other archs, most skb
fields are on cold cachelines.
If the skb are linear and the kernel don't need to compute the udp
csum, only a handful of skb fields are required by udp_recvmsg().
Since we already use skb->dev_scratch to cache hot data, and
there are 32 bits unused on 64 bit archs, use such field to cache
as much data as we can, and try to prefetch on dequeue the relevant
fields that are left out.

This can save up to 2 cache miss per packet.

v1 -> v2:
  - changed udp_dev_scratch fields types to u{32,16} variant,
    replaced bitfiled with bool

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-12 10:01:29 -04:00
Paolo Abeni
0a463c78d2 udp: avoid a cache miss on dequeue
Since UDP no more uses sk->destructor, we can clear completely
the skb head state before enqueuing. Amend and use
skb_release_head_state() for that.

All head states share a single cacheline, which is not
normally used/accesses on dequeue. We can avoid entirely accessing
such cacheline implementing and using in the UDP code a specialized
skb free helper which ignores the skb head state.

This saves a cacheline miss at skb deallocation time.

v1 -> v2:
  replaced secpath_reset() with skb_release_head_state()

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-12 10:01:29 -04:00
Paolo Abeni
3889a803e1 net: factor out a helper to decrement the skb refcount
The same code is replicated in 3 different places; move it to a
common helper.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-12 10:01:29 -04:00
Niklas Söderlund
78d6102256 sh_eth: add support for changing MTU
The hardware supports the MTU to be changed and the driver it self is
somewhat prepared to support this. This patch hooks up the callbacks to
be able to change the MTU from user-space.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-12 09:57:52 -04:00
Daniel Borkmann
f1c9eed7f4 bpf, arm64: take advantage of stack_depth tracking
Make use of recently implemented stack_depth tracking for arm64 JIT,
so that stack usage can be reduced heavily for programs not using
tail calls at least.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 18:18:32 -04:00
David S. Miller
66e037ca57 mlx5-updates-2017-06-11
This series provides updates to mlx5 header rewrite feature, from Or Gerlitz.
 and three more small updates From maor and eran.
 
 -------
 Or says:
 
 Packets belonging to flows which are different by matching may still need
 to go through the same header re-writes (e.g set the current routing hop
 MACs and issue TTL decrement).  To minimize the number of modify header
 IDs, we add a cache for header re-write IDs which is keyed by the binary
 chain of modify header actions.
 
 The caching is supported for both eswitch and NIC use-cases, where the
 actual conversion of the code to use caching comes in separate patches,
 one per use-case.
 
 Using a per field mask field, the TC pedit action supports modifying
 partial fields. The last patch enables offloading that.
 -------
 
 From Maor, update flow table commands layout to the latest HW spec.
 From Eran, ethtool connector type reporting updates.
 
 Thanks,
 Saeed.
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Merge tag 'mlx5-updates-2017-06-11' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2017-06-11

This series provides updates to mlx5 header rewrite feature, from Or Gerlitz.
and three more small updates From maor and eran.

-------
Or says:

Packets belonging to flows which are different by matching may still need
to go through the same header re-writes (e.g set the current routing hop
MACs and issue TTL decrement).  To minimize the number of modify header
IDs, we add a cache for header re-write IDs which is keyed by the binary
chain of modify header actions.

The caching is supported for both eswitch and NIC use-cases, where the
actual conversion of the code to use caching comes in separate patches,
one per use-case.

Using a per field mask field, the TC pedit action supports modifying
partial fields. The last patch enables offloading that.
-------

From Maor, update flow table commands layout to the latest HW spec.
From Eran, ethtool connector type reporting updates.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-11 18:10:42 -04:00
Grygorii Strashko
6d307f6b09 net: ethernet: ti: cpdma: do not enable host error misc irq
CPSW driver does not handle this interrupt, so there are no reasons to enable
it in hardware.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 22:10:13 -04:00
Grygorii Strashko
e9523a5a32 net: ethernet: ti: cpsw: enable HWTSTAMP_FILTER_PTP_V1_L4_EVENT filter
CPSW driver supports PTP v1 messages, but for unknown reasons this filter
is not advertised. As result,
./tools/testing/selftests/networking/timestamping/timestamping utility
can't be used for testing of CPSW RX timestamping with option
SOF_TIMESTAMPING_RX_HARDWARE, because it uses
HWTSTAMP_FILTER_PTP_V1_L4_SYNC filter.

Hence, fix it by advertising HWTSTAMP_FILTER_PTP_V1_L4_XXX filters
in CPSW driver.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 22:10:13 -04:00
David S. Miller
9fd7aca2c6 Merge branch 'bpf-misc-updates'
Daniel Borkmann says:

====================
Misc BPF updates

This set contains a couple of misc updates: stack usage reduction
for perf_sample_data in tracing progs, reduction of stale data in
verifier on register state transitions that I still had in my queue
and few selftest improvements as well as bpf_set_hash() helper for
tc programs.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 19:05:47 -04:00
Daniel Borkmann
ded092cd73 bpf: add bpf_set_hash helper for tc progs
Allow for tc BPF programs to set a skb->hash, apart from clearing
and triggering a recalc that we have right now. It allows for BPF
to implement a custom hashing routine for skb_get_hash().

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 19:05:47 -04:00
Daniel Borkmann
966789fb86 bpf: remove cg_skb_func_proto and use sk_filter_func_proto directly
Since cg_skb_func_proto() doesn't do anything else than just calling
into sk_filter_func_proto(), remove it and set sk_filter_func_proto()
directly for .get_func_proto callback.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 19:05:46 -04:00
Daniel Borkmann
f735b64926 bpf, tests: set rlimit also for test_align, so it doesn't fail
When running all the tests, through 'make run_tests', I had
test_align failing due to insufficient rlimit. Set it the same
way as all other test cases from BPF selftests do, so that
test case properly loads everything.

  [...]
  Summary: 7 PASSED, 1 FAILED
  selftests: test_progs [PASS]
  /home/foo/net-next/tools/testing/selftests/bpf
  Test   0: mov ... Failed to load program.
  FAIL
  Test   1: shift ... Failed to load program.
  FAIL
  Test   2: addsub ... Failed to load program.
  FAIL
  Test   3: mul ... Failed to load program.
  FAIL
  Test   4: unknown shift ... Failed to load program.
  FAIL
  Test   5: unknown mul ... Failed to load program.
  FAIL
  Test   6: packet const offset ... Failed to load program.
  FAIL
  Test   7: packet variable offset ... Failed to load program.
  FAIL
  Results: 0 pass 8 fail
  selftests: test_align [PASS]
  [...]

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 19:05:46 -04:00
Daniel Borkmann
5ecf51fd9c bpf, tests: add a test for htab lookup + update traversal
Add a test case to track behaviour when traversing and updating the
htab map. We recently used such traversal, so it's quite useful to
keep it as an example in selftests.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 19:05:46 -04:00
Daniel Borkmann
36e24c0030 bpf: reset id on spilled regs in clear_all_pkt_pointers
Right now, we don't reset the id of spilled registers in case of
clear_all_pkt_pointers(). Given pkt_pointers are highly likely to
contain an id, do so by reusing __mark_reg_unknown_value().

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 19:05:45 -04:00
Daniel Borkmann
4a2ff55aa4 bpf: reset id on CONST_IMM transition
Whenever we set the register to the type CONST_IMM, we currently don't
reset the id to 0. id member is not used in CONST_IMM case, so don't
let it become stale, where pruning won't be able to match later on.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 19:05:45 -04:00
Daniel Borkmann
d25da6caa2 bpf: don't check spilled reg state for non-STACK_SPILLed type slots
spilled_regs[] state is only used for stack slots of type STACK_SPILL,
never for STACK_MISC. Right now, in states_equal(), even if we have
old and current stack state of type STACK_MISC, we compare spilled_regs[]
for that particular offset. Just skip these like we do everywhere else.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 19:05:45 -04:00
Daniel Borkmann
20b9d7ac48 bpf: avoid excessive stack usage for perf_sample_data
perf_sample_data consumes 386 bytes on stack, reduce excessive stack
usage and move it to per cpu buffer. It's allowed due to preemption
being disabled for tracing, xdp and tc programs, thus at all times
only one program can run on a specific CPU and programs cannot run
from interrupt. We similarly also handle bpf_pt_regs.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 19:05:45 -04:00
Fabio Estevam
41e8e40458 net: fec: Add a fec_enet_clear_ethtool_stats() stub for CONFIG_M5272
Commit 2b30842b23 ("net: fec: Clear and enable MIB counters on imx51")
introduced fec_enet_clear_ethtool_stats(), but missed to add a stub
for the CONFIG_M5272=y case, causing build failure for the
m5272c3_defconfig.

Add the missing empty stub to fix the build failure.

Fixes: Commit 2b30842b23 ("net: fec: Clear and enable MIB counters on imx51")
Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:45:22 -04:00
Chenbo Feng
89dfba3e1b Remove the redundant skb->dev initialization in ip6_fragment
After moves the skb->dev and skb->protocol initialization into
ip6_output, setting the skb->dev inside ip6_fragment is unnecessary.

Fixes: 97a7a37a7b7b("ipv6: Initial skb->dev and skb->protocol in ip6_output")
Signed-off-by: Chenbo Feng <fengc@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:25:21 -04:00
Xin Long
4abf5a653b sctp: no need to check assoc id before calling sctp_assoc_set_id
sctp_assoc_set_id does the assoc id check in the beginning when
processing dupcookie, no need to do the same check before calling
it.

v1->v2:
  fix some typo errs Marcelo pointed in changelog.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:23:31 -04:00
Xin Long
c0a4c2d1cd sctp: use read_lock_bh in sctp_eps_seq_show
This patch is to use read_lock_bh instead of local_bh_disable
and read_lock in sctp_eps_seq_show.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:22:26 -04:00
Xin Long
6dfe4b97e0 sctp: fix recursive locking warning in sctp_do_peeloff
Dmitry got the following recursive locking report while running syzkaller
fuzzer, the Call Trace:
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x2ee/0x3ef lib/dump_stack.c:52
 print_deadlock_bug kernel/locking/lockdep.c:1729 [inline]
 check_deadlock kernel/locking/lockdep.c:1773 [inline]
 validate_chain kernel/locking/lockdep.c:2251 [inline]
 __lock_acquire+0xef2/0x3430 kernel/locking/lockdep.c:3340
 lock_acquire+0x2a1/0x630 kernel/locking/lockdep.c:3755
 lock_sock_nested+0xcb/0x120 net/core/sock.c:2536
 lock_sock include/net/sock.h:1460 [inline]
 sctp_close+0xcd/0x9d0 net/sctp/socket.c:1497
 inet_release+0xed/0x1c0 net/ipv4/af_inet.c:425
 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:432
 sock_release+0x8d/0x1e0 net/socket.c:597
 __sock_create+0x38b/0x870 net/socket.c:1226
 sock_create+0x7f/0xa0 net/socket.c:1237
 sctp_do_peeloff+0x1a2/0x440 net/sctp/socket.c:4879
 sctp_getsockopt_peeloff net/sctp/socket.c:4914 [inline]
 sctp_getsockopt+0x111a/0x67e0 net/sctp/socket.c:6628
 sock_common_getsockopt+0x95/0xd0 net/core/sock.c:2690
 SYSC_getsockopt net/socket.c:1817 [inline]
 SyS_getsockopt+0x240/0x380 net/socket.c:1799
 entry_SYSCALL_64_fastpath+0x1f/0xc2

This warning is caused by the lock held by sctp_getsockopt() is on one
socket, while the other lock that sctp_close() is getting later is on
the newly created (which failed) socket during peeloff operation.

This patch is to avoid this warning by use lock_sock with subclass
SINGLE_DEPTH_NESTING as Wang Cong and Marcelo's suggestion.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Suggested-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Suggested-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:22:25 -04:00
Rosen, Rami
664f46a290 net/packet: remove unneeded declaraion of tpacket_snd().
This patch removes unneeded forward declaration of tpacket_snd()
in net/packet/af_packet.c.

Signed-off-by: Rami Rosen <rami.rosen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:15:25 -04:00
Chenbo Feng
384abed1fe bpf: Remove duplicate tcp_filter hook in ipv6
There are two tcp_filter hooks in tcp_ipv6 ingress path currently.
One is at tcp_v6_rcv and another is in tcp_v6_do_rcv. It seems the
tcp_filter() call inside tcp_v6_do_rcv is redundent and some packet
will be filtered twice in this situation. This will cause trouble
when using eBPF filters to account traffic data.

Signed-off-by: Chenbo Feng <fengc@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:08:02 -04:00
Nicolas Dichtel
cd99c37763 bonding: warn user when 802.3ad speed is unknown
Goal is to advertise the user when ethtool speeds and 802.3ad speeds are
desynchronized.
When this case happens, the kernel needs to be patched.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 16:06:49 -04:00
Nicolas Dichtel
10d486a30c netns: fix error code when the nsid is already used
When the user tries to assign a specific nsid, idr_alloc() is called with
the range [nsid, nsid+1]. If this nsid is already used, idr_alloc() returns
ENOSPC (No space left on device). In our case, it's better to return
EEXIST to make it clear that the nsid is not available.

CC: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 15:58:50 -04:00
Nicolas Dichtel
4a7f7bc600 netns: define extack error msg for nsis cmds
It helps the user to identify errors.

CC: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-10 15:58:50 -04:00
Ganesh Goudar
d041784915 cxgb4: fix memory leak in init_one()
Free up mbox_log allocated for PF0 to PF3.

Fixes: 7829451c69 ("cxgb4: Add control net_device for configuring PCIe VF")
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-09 15:52:50 -04:00
Arnd Bergmann
2f3ca449a4 qed: add qed_int_sb_init() stub function
When CONFIG_QED_SRIOV is disabled, we get a build error:

drivers/net/ethernet/qlogic/qed/qed_int.c: In function 'qed_int_sb_init':
drivers/net/ethernet/qlogic/qed/qed_int.c:1499:4: error: implicit declaration of function 'qed_vf_set_sb_info'; did you mean 'qed_mcp_get_resc_info'? [-Werror=implicit-function-declaration]

All the other declarations have a 'static inline' stub as an alternative
here, so this adds one more for qed_int_sb_init.

Fixes: 50a207147f ("qed: Hold a single array for SBs")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-09 15:51:45 -04:00
David S. Miller
c156d2890a Merge branch 'qed-Light-L2-updates'
Yuval Mintz says:

====================
qed*: Light L2 updates

This series does a major overhaul of the LL2 logic in qed.
The single biggest change done here is in #5 where we're changing
the API qed provides for LL2 [both internally in case of storage and
externally in case of RoCE] to become callback-based to allow cleaner
scalability in preperation to the future iWARP submission which would
aadd additional flavors of LL2. It's also the only patch in series
to modify !qed logic [qedr].

Patches prior to that mostly deal with refactoring LL2 code,
encapsulating varaious parameters into structure and re-ordering
of LL2 code. The latter patches add some small missing bits of LL2
ffunctionality.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-09 15:49:03 -04:00
Mintz, Yuval
fef1c3f7ac qed: collect GSI port statistics
The LL2 statistics already have place holders for these, but haven't
populated them so far.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-09 15:49:03 -04:00
Mintz, Yuval
54f19f07ac qed: Call rx_release_cb() when flushing LL2
Driver to inform the connection owner that the its buffers are being
released as part of a flush.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-09 15:49:02 -04:00
Mintz, Yuval
d2201a2159 qed: No need for LL2 frags indication
This is a legacy leftover; There's no current flow where 'frags_mapped'
would be set.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-09 15:49:02 -04:00