Commit Graph

548542 Commits

Author SHA1 Message Date
Johannes Berg
5736b7eba3 iwlwifi: remove IWL3165_UCODE_API_OK and _MIN
As the 3165 device uses the same firmware as 7265-D and currently
all 7000 series (including 3160/3165) use the same API versions
remove IWL3165_UCODE_API_OK and _MIN. We might have to put them
back if firmware support ever splits, but in that case might also
have to add a different MODULE_FIRMWARE statement.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:30 +03:00
Eyal Shapira
ed21a384bb iwlwifi: mvm: rs: fix success ratio comparison in rs_get_best_rate
success_ratio is actually 128 * SR in percentage while
IWL_MVM_RS_SR_NO_DECREASE is 85%. Fix this by using RS_PERCENT().
This bug caused the if branch to be always executed. This in turn
led to always selecting a rate, following a column switch, in which
the expected throughput would exceed the best expected current throughput.
In some scenarios where the success ratio isn't >85% such a rate
could be too aggressive leading us to avoid the new column.
This has the potential of causing sub optimal performance.

Reported-by: Moshe Harel <moshe.harel@intel.com>
Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:30 +03:00
Eyal Shapira
40ce5ed1e9 iwlwifi: mvm: rs: minor indentation fix
Indentation was off a bit. Fix it.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:29 +03:00
Eyal Shapira
dfa1325a08 iwlwifi: mvm: rs: remove overflowing debug message
This message isn't very useful and creates clutter.
Remove it.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:29 +03:00
Eyal Shapira
cc60c6e929 iwlwifi: mvm: rs: improve rate debug messages
Pretty print the rate full details to ease debugging.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:28 +03:00
Johannes Berg
ceef91c894 iwlwifi: mvm: stop using DEVICE_POWER_FLAGS_CAM_MSK
The firmware has always treated these two bits to mean that
powersave is enabled when POWER_SAVE_ENA is set and CAM is
clear; it doesn't use them in any non-combined way.

Therefore, it's pointless to send it two bits, and the API
should be cleaned up. Prepare the driver by removing the CAM
bit and using only POWER_SAVE_ENA to indicate whether PS is
enabled or not.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:28 +03:00
Liad Kaufman
5c1156efeb iwlwifi: mvm: support enabling a queue with a given ssn
When enabling a queue, the default SSN is 0.

Allow determining what that SSN should be, if required. This
can happen, for example, if a queue gets reconfigured.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:27 +03:00
Liad Kaufman
4ecafae9e5 iwlwifi: mvm: support using multiple ACs on single HW queue
"DQA" is shorthand for "dynamic queue allocation", with the
idea of allocating queues per-RA/TID on-demand rather than
using shared queues statically allocated per vif. The goal
of this is to enable future features (like GO PM) and to
improve performance measurements of TX traffic.

When RA/TID streams can't be neatly sorted into different AC
queues, DQA allows sharing queues for the same RA. This means
that DQA allows different ACs may reach the same HW queue.

Update the code to allow such queue sharing by having a mapping
between the HW queue and the mac80211 queues using it (as this
could be more than one queue).

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:27 +03:00
Johannes Berg
56882e6cab iwlwifi: transport: track number of allocated queues
As the transport will decide how many queues (and MSI-X vectors)
to allocate, add a field to indicate that to the op-mode so it
can size/allocate its own data structures appropriately.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:27 +03:00
Johannes Berg
a190430c5e iwlwifi: op-mode API: add rx_rss method
Upcoming hardware will have the ability to do L3 hashing for RSS,
directing data packets (and perhaps some associated metadata and
management notifications) to different MSI-X vectors.

In this case, it makes no sense to go through the full RX dispatch
since it's already known that only a subset of the possibilities
can come in, requiring a new receive method. In addition this must
know which queue the packet was received on.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:26 +03:00
Johannes Berg
1939089300 iwlwifi: mvm: remove PHY RX from handlers
Treat PHY RX specially, since it's actually pretty frequent,
doesn't need all the notication etc. code, and will have a
different handler in future hardware.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:26 +03:00
Assaf Krauss
5ac15be8fa iwlwifi: mvm: Improve debugfs tof robustness
Return a proper error when wrong parameters are passed to debugfs
tof_range_request.

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:25 +03:00
Gregory Greenman
9ef2b8befb iwlwifi: mvm: ToF - fill bssid of responder configuration
The command needs to have the AP interfaces BSSID (which corresponds
to its address).

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:25 +03:00
Assaf Krauss
3e0fa50575 iwlwifi: mvm: Fix tof debugfs formats (dec vs. hex)
Make some input formats more natural, e.g. bandwidth and periods
are more natural in decimal than in hexadecimal.

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2015-10-05 14:33:24 +03:00
kbuild test robot
9886ce2b9d net: encx24j600_exit() can be static
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 04:02:43 -07:00
Jon Ringle
04fbfce7a2 net: Microchip encx24j600 driver
This ethernet driver supports the Micorchip enc424j600/626j600 Ethernet
controller over a SPI bus interface. This driver makes use of the regmap API to
optimize access to registers by caching registers where possible.

Datasheet:
http://ww1.microchip.com/downloads/en/DeviceDoc/39935b.pdf

Signed-off-by: Jon Ringle <jringle@gridpoint.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 04:02:41 -07:00
Jon Ringle
7741c373cf regmap: Allow installing custom reg_update_bits function
This commit allows installing a custom reg_update_bits function for cases where
the hardware provides a mechanism to set or clear register bits without a
read/modify/write cycle. Such is the case with the Microchip ENCX24J600.

Signed-off-by: Jon Ringle <jringle@gridpoint.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 04:02:40 -07:00
Govindarajulu Varadarajan
937317c7c1 enic: do hang reset only in case of tx timeout
The current code invokes hang reset in case of error interrupt. We should
hang reset only in case of tx timeout. This because of the way hang reset
is implemented in firmware. Hang reset takes more firmware resources than
soft reset. Adaptor does not generate error interrupt in case of tx
timeout.

Hang reset only in case of tx timeout, in .ndo_tx_timeout. Do soft reset
otherwise. Introduce deferred work, enic_tx_hang_reset, to do hang reset.

Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:51:35 -07:00
Govindarajulu Varadarajan
cc809237e1 enic: handle spurious error interrupt
Some of the enic adaptors are know to generate spurious interrupts. When
error interrupt is generated, driver just resets the device. This patch
resets the device only when an error is occurred.

Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:51:33 -07:00
David S. Miller
2905f5bb1c Merge branch 'cxgb4-next'
Hariprasad Shenai says:

====================
cxgb4: Trivial fixes for cxgb4

Fixes the following issues
Don't read non existent T4/T5/T6 adapter registers for ethtool dump.
For T4, dont read mailbox control registers. Adds new devlog faility and
report correct link speed for unsupported ones.

This patch series has been created against net-next tree and includes
patches on cxgb4 driver.

We have included all the maintainers of respective drivers. Kindly review
the change and let us know in case of any review comments.
====================

Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:48:45 -07:00
Hariprasad Shenai
85412255ef cxgb4: Report correct link speed for unsupported ones
When we get garbage from the firmware with weird Port Speeds,
etc. we should emit a warning regarding unsupported speeds rather than
use the bogus default of "10Mbps" which isn't even an option in the
firmware Port Information message

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:48:41 -07:00
Hariprasad Shenai
da4976e17b cxgb4: Adds a new Device Log Facility FW_DEVLOG_FACILITY_CF
The firmware team added a new Device Log Facility FW_DEVLOG_FACILITY_CF,
but the driver has been decoding Device Log messages with that Facility as
"(NULL)", fixing it.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:48:41 -07:00
Hariprasad Shenai
b3695540ba cxgb4: For T4, don't read the Firmware Mailbox Control register
T4 doesn't have the Shadow copy of the register which we can read without
side effect. So don't read mbox control register for T4 adapter

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:48:40 -07:00
Hariprasad Shenai
8119c01800 cxgb4 : Update T4/T5/T6 register ranges
Update T4/T5/T6 adapter register ranges so that it doesn't read non
existent registers when dumped using ethtool

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:48:39 -07:00
David S. Miller
40e106801e Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/net-next
Eric W. Biederman says:

====================
net: Pass net through ip fragmention

This is the next installment of my work to pass struct net through the
output path so the code does not need to guess how to figure out which
network namespace it is in, and ultimately routes can have output
devices in another network namespace.

This round focuses on passing net through ip fragmentation which we seem
to call from about everywhere.  That is the main ip output paths, the
bridge netfilter code, and openvswitch.  This has to happend at once
accross the tree as function pointers are involved.

First some prep work is done, then ipv4 and ipv6 are converted and then
temporary helper functions are removed.
====================

Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:39:31 -07:00
David S. Miller
7e2832f17f Merge branch 'rds-perf'
Sowmini Varadhan says:

====================
RDS: RDS-TCP perf enhancements

A 3-part patchset that (a) improves current RDS-TCP perf
by 2X-3X and (b) refactors earlier robustness code for
better observability/scaling.

Patch 1 is an enhancment of earlier robustness fixes
that had used separate sockets for client and server endpoints to
resolve race conditions. It is possible to have an equivalent
solution that does not use 2 sockets. The benefit of a
single socket solution is that it results in more predictable
and observable behavior for the underlying TCP pipe of an
RDS connection

Patches 2 and 3 are simple, straightforward perf bug fixes
that align the RDS TCP socket with other parts of the kernel stack.

v2: fix kbuild-test-robot warnings, comments from  Sergei Shtylov
    and Santosh Shilimkar.
====================

Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:35:29 -07:00
Sowmini Varadhan
76b29ef120 RDS-TCP: Set up MSG_MORE and MSG_SENDPAGE_NOTLAST as appropriate in rds_tcp_xmit
For the same reasons as commit 2f53384424 ("tcp: allow splice() to
build full TSO packets") and commit 35f9c09fe9 ("tcp: tcp_sendpages()
should call tcp_push() once"), rds_tcp_xmit may have multiple pages to
send, so use the MSG_MORE and MSG_SENDPAGE_NOTLAST as hints to
tcp_sendpage()

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:34:53 -07:00
Sowmini Varadhan
1edd6a14d2 RDS-TCP: Do not bloat sndbuf/rcvbuf in rds_tcp_tune
Using the value of RDS_TCP_DEFAULT_BUFSIZE (128K)
clobbers efficient use of TSO because it inflates the size_goal
that is computed in tcp_sendmsg/tcp_sendpage and skews packet
latency, and the default values for these parameters actually
results in significantly better performance.

In request-response tests using rds-stress with a packet size of
100K with 16 threads (test parameters -q 100000 -a 256 -t16 -d16)
between a single pair of IP addresses achieves a throughput of
6-8 Gbps. Without this patch, throughput maxes at 2-3 Gbps under
equivalent conditions on these platforms.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:34:53 -07:00
Sowmini Varadhan
3b20fc3897 RDS: Use a single TCP socket for both send and receive.
Commit f711a6ae06 ("net/rds: RDS-TCP: Always create a new rds_sock
for an incoming connection.") modified rds-tcp so that an incoming SYN
would ignore an existing "client" TCP connection which had the local
port set to the transient port.  The motivation for ignoring the existing
"client" connection in f711a6ae was to avoid race conditions and an
endless duel of reconnect attempts triggered by a restart/abort of one
of the nodes in the TCP connection.

However, having separate sockets for active and passive sides
is avoidable, and the simpler model of a single TCP socket for
both send and receives of all RDS connections associated with
that tcp socket makes for easier observability. We avoid the race
conditions from f711a6ae by attempting reconnects in rds_conn_shutdown
if, and only if, the (new) c_outgoing bit is set for RDS_TRANS_TCP.
The c_outgoing bit is initialized in __rds_conn_create().

A side-effect of re-using the client rds_connection for an incoming
SYN is the potential of encountering duelling SYNs, i.e., we
have an outgoing RDS_CONN_CONNECTING socket when we get the incoming
SYN. The logic to arbitrate this criss-crossing SYN exchange in
rds_tcp_accept_one() has been modified to emulate the BGP state
machine: the smaller IP address should back off from the connection attempt.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:34:51 -07:00
David S. Miller
393159e917 Merge branch 'xgbe-next'
Tom Lendacky says:

====================
amd-xgbe: AMD XGBE driver updates 2015-09-30

The following patches are included in this driver update series:

- Remove unneeded semi-colon
- Follow the DT/ACPI precedence used by the device_ APIs
- Add ethtool support for getting and setting the msglevel
- Add ethtool support error and debug messages
- Simplify the hardware FIFO assignment calculations
- Add receive buffer unavailable statistic
- Use the device workqueue instead of the system workqueue
- Remove the use of a link state bit

This patch series is based on net-next.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:23:40 -07:00
Lendacky, Thomas
50789845cf amd-xgbe: Remove the XGBE_LINK state bit
The XGBE_LINK bit is used just to determine whether to call the
netif_carrier_on/off functions. Rather than define and use this bit,
just call the functions. The netif_carrier_ok function can be used in
place of checking the XGBE_LINK bit in the future.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:23:27 -07:00
Lendacky, Thomas
afb43e8a0a amd-xgbe: Use device workqueue instead of system workqueue
The driver creates, flushes and destroys a device workqueue but queues
work to the system workqueue. Switch from using the system workqueue to
the device workqueue.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:23:26 -07:00
Lendacky, Thomas
72c9ac4e1f amd-xgbe: Add receive buffer unavailable statistic
Add a statistic that tracks how many times an interrupt is generated for
a receive buffer not being available to the hardware which prevents the
hardware from being able to DMA the received data.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:23:26 -07:00
Lendacky, Thomas
9c439e4b73 amd-xgbe: Simplify calculation and setting of queue fifos
The calculation of the Tx and Rx fifo sizes can be calculated rather
than hardcoded in a switch statement. Additionally, the per-queue fifo
sizes can be calculated rather than hardcoded using if/else if statements
that can possibly underutilize the available fifo area.

Change the code to calculate the fifo sizes and the per-queue fifo sizes
to simplify the code and make best use of the available fifo.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:23:25 -07:00
Lendacky, Thomas
e5dd8b8110 amd-xgbe: Add ethtool error and debug messages
Add error and dynamic debug messages to various ethtool functions in
the driver while also removing the DBGPR debug print calls. Also, change
the message level for some error messages from alert to err.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:23:25 -07:00
Lendacky, Thomas
349fb2d700 amd-xgbe: Add ethtool support for setting the msglevel
Provide the ethtool functions to support getting and setting the
msglevel for the driver.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:23:23 -07:00
Lendacky, Thomas
47f2e6c275 amd-xgbe: Use proper DT / ACPI precedence checking
Device tree presence takes precedence over ACPI in the device_* APIs.
The amd-xgbe driver should follow the same precedence. Update the check
on whether to use DT / ACPI to follow this.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:23:22 -07:00
Lendacky, Thomas
3947d78a54 amd-xgbe: Remove an unneeded semicolon on a switch statement
Remove an unneeded semicolon at the end of a switch statement block.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:23:22 -07:00
Eric Dumazet
ac8cfc7bb8 tcp: restore fastopen operations
I accidentally cleared fastopenq.max_qlen in reqsk_queue_alloc()
while max_qlen can be set before listen() is called,
using TCP_FASTOPEN socket option for example.

Fixes: 0536fcc039 ("tcp: prepare fastopen code for upcoming listener changes")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:19:06 -07:00
David S. Miller
77946de51b Merge branch 'net-y2038'
Arnd Bergmann says:

====================
net: assorted y2038 changes

This is a set of changes for network drivers and core code to
get rid of the use of time_t and derived data structures.

I have a longer set of patches that enables me to build kernels
with the time_t definition removed completely as a help to find
y2038 overflow issues. This is the subset for networking that
contains all code that has a reasonable way of fixing at the
moment and that is either commonly used (in one of the defconfigs)
or that blocks building a whole subsystem.

Most of the patches in this series should be noncontroversial,
but the last two that I marked [RFC] are a bit tricky and
need input from people that are more familiar with the code than
I am. All 12 patches are independent of one another and can
be applied in any order, so feel free to pick all that look
good.

Patches that are not included here are:

 - disabling less common device drivers that I don't have a fix
   for yet, this includes
	drivers/net/ethernet/brocade/bna/bfa_ioc.c
	drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c
	drivers/net/ethernet/tile/tilegx.c
	drivers/net/hamradio/baycom_ser_fdx.c
	drivers/net/wireless/ath/ath10k/core.h
	drivers/net/wireless/ath/ath9k/
	drivers/net/wireless/ath/ath9k/
	drivers/net/wireless/atmel.c
	drivers/net/wireless/prism54/isl_38xx.c
	drivers/net/wireless/rt2x00/rt2x00debug.c
	drivers/net/wireless/rtlwifi/
	drivers/net/wireless/ti/wlcore/
	drivers/staging/ozwpan/
	net/atm/mpoa_caches.c
	net/atm/mpoa_proc.c
	net/dccp/probe.c
	net/ipv4/tcp_probe.c
	net/netfilter/nfnetlink_queue_core.c
	net/netfilter/nfnetlink_queue_core.c
	net/netfilter/xt_time.c
	net/openvswitch/flow.c
	net/sctp/probe.c
	net/sunrpc/auth_gss/
	net/sunrpc/svcauth_unix.c
	net/vmw_vsock/af_vsock.c
   We'll get there eventually, or we an add a dependency to ensure
   they are not built on 32-bit kernels that need to survive
   beyond 2038. Most of these should be really easy to fix.

 - recvmmsg/sendmmsg system calls: patches have been sent out
   as part of the syscall series, need a little more work and
   review

 - SIOCGSTAMP/SIOCGSTAMPNS/ ioctl calls: tricky, need to discuss
   with some folks at kernel summit

 - SO_RCVTIMEO/SO_SNDTIMEO/SO_TIMESTAMP/SO_TIMESTAMPNS socket
   opt: similar and related to the ioctl

 - mmapped packet socket: need to create v4 of the API, nontrivial

 - pktgen: sends 32-bit timestamps over network, need to find out
   if using unsigned stamps is good enough

 - af_rxpc: similar to pktgen, uses 32-bit times for deadlines

 - ppp ioctl: patch is being worked on, nontrivial but doable
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:49 -07:00
Arnd Bergmann
3ef0a25bf9 net: sctp: avoid incorrect time_t use
We want to avoid using time_t in the kernel because of the y2038
overflow problem. The use in sctp is not for storing seconds at
all, but instead uses microseconds and is passed as 32-bit
on all machines.

This patch changes the type to u32, which better fits the use.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: linux-sctp@vger.kernel.org
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:48 -07:00
Arnd Bergmann
3dd7669f1f ipv6: use ktime_t for internal timestamps
The ipv6 mip6 implementation is one of only a few users of the
skb_get_timestamp() function in the kernel, which is both unsafe
on 32-bit architectures because of the 2038 overflow, and slightly
less efficient than the skb_get_ktime() based approach.

This converts the function call and the mip6_report_rate_limiter
structure that stores the time stamp, eliminating all uses of
timeval in the ipv6 code.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:47 -07:00
Arnd Bergmann
f6389ecbc5 nfnetlink: use y2038 safe timestamp
The __build_packet_message function fills a nfulnl_msg_packet_timestamp
structure that uses 64-bit seconds and is therefore y2038 safe, but
it uses an intermediate 'struct timespec' which is not.

This trivially changes the code to use 'struct timespec64' instead,
to correct the result on 32-bit architectures.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Cc: netfilter-devel@vger.kernel.org
Cc: coreteam@netfilter.org
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:47 -07:00
Arnd Bergmann
70ba07b675 atm: remove 'struct zatm_t_hist'
The zatm_t_hist structure is not used anywhere in the kernel, but is
exported to user space. As we are trying to eliminate uses of time_t
in the kernel for y2038 compatibility, the current definition triggers
checking tools because it contains 'struct timeval'.

As pointed out by Chas Williams, the only user of this structure was
the ZATM_GETHIST ioctl command that has been removed a long time ago,
and we can remove the structure as well without breaking any user
space.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Chas Williams <3chas3@gmail.com>
Cc: linux-atm-general@lists.sourceforge.net
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:46 -07:00
Arnd Bergmann
84b00607ae mac80211: use ktime_get_seconds
The mac80211 code uses ktime_get_ts to measure the connected time.
As this uses monotonic time, it is y2038 safe on 32-bit systems,
but we still want to deprecate the use of 'timespec' because most
other users are broken.

This changes the code to use ktime_get_seconds() instead, which
avoids the timespec structure and is slightly more efficient.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:45 -07:00
Arnd Bergmann
52f4f91893 mwifiex: avoid gettimeofday in ba_threshold setting
mwifiex_get_random_ba_threshold() uses a complex homegrown implementation
to generate a pseudo-random number from the current time as returned
from do_gettimeofday().

This currently requires two 32-bit divisions plus a couple of other
computations that are eventually discarded as only eight bits of
the microsecond portion are used at all.

We could replace this with a call to get_random_bytes(), but that
might drain the entropy pool too fast if this is called for each
packet.

Instead, this patch converts it to use ktime_get_ns(), which is a
bit faster than do_gettimeofday(), and then uses a similar algorithm
as before, but in a way that takes both the nanosecond and second
portion into account for slightly-more-but-still-not-very-random
pseudorandom number.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Amitkumar Karwar <akarwar@marvell.com>
Cc: Nishant Sarmukadam <nishants@marvell.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:44 -07:00
Arnd Bergmann
e253fb74d6 mwifiex: use ktime_get_real for timestamping
The mwifiex_11n_aggregate_pkt() function creates a ktime_t from
a timeval returned by do_gettimeofday, which is slow and causes
an overflow in 2038 on 32-bit architectures.

This solves both problems by using the appropriate ktime_get_real()
function.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Amitkumar Karwar <akarwar@marvell.com>
Cc: Nishant Sarmukadam <nishants@marvell.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:43 -07:00
Arnd Bergmann
40c9b0796d net: igb: avoid using timespec
We want to deprecate the use of 'struct timespec' on 32-bit
architectures, as it is will overflow in 2038. The igb
driver uses it to read the current time, and can simply
be changed to use ktime_get_real_ts64() instead.

Because of hardware limitations, there is still an overflow
in year 2106, which we cannot really avoid, but this documents
the overflow.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: intel-wired-lan@lists.osuosl.org
Reviewed-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:42 -07:00
Arnd Bergmann
0a6241551d net: stmmac: avoid using timespec
We want to deprecate the use of 'struct timespec' on 32-bit
architectures, as it is will overflow in 2038. The stmmac
driver uses it to read the current time, and can simply
be changed to use ktime_get_real_ts64() instead.

Because of hardware limitations, there is still an overflow
in year 2106, which we cannot really avoid, but this documents
the overflow.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:41 -07:00
Arnd Bergmann
be7ccdc36b net: fec: avoid timespec use
The fec_ptp_enable_pps uses an open-coded implementation of ns_to_timespec,
which will be removed eventually as it is not y2038-safe on 32-bit
architectures. Two more instances of the same code in this file were
already converted to use the safe ns_to_timespec64 in commit 6630514fce
("ptp: fec: use helpers for converting ns to timespec"), this changes
the last one as well.

The seconds portion here is actually unused and we could just remove the
timespec variable, but using ns_to_timespec64 can still be better as the
implementation can be hand-optimized in the future.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Fugang Duan <b38611@freescale.com>
Cc: Luwei Zhou <b45643@freescale.com>
Cc: Frank Li <Frank.Li@freescale.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-05 03:16:39 -07:00