Commit Graph

665496 Commits

Author SHA1 Message Date
Erik Stromdahl
3e0dd820f0 ath10k: htc: made static function public
Changed ath10k_htc_notify_tx_completion and
ath10k_htc_process_trailer from static to non static.

These functions are needed by SDIO/mbox.

Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2017-05-04 15:55:11 +03:00
James Hughes
9cc4b7cb86 brcmfmac: Make skb header writable before use
The driver was making changes to the skb_header without
ensuring it was writable (i.e. uncloned).
This patch also removes some boiler plate header size
checking/adjustment code as that is also handled by the
skb_cow_header function used to make header writable.

Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-04-26 12:05:18 +03:00
James Hughes
455a1eb465 brcmfmac: Ensure pointer correctly set if skb data location changes
The incoming skb header may be resized if header space is
insufficient, which might change the data adddress in the skb.
Ensure that a cached pointer to that data is correctly set by
moving assignment to after any possible changes.

Signed-off-by: James Hughes <james.hughes@raspberrypi.org>

Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-04-26 12:04:32 +03:00
Pan Bian
9dc7efd397 rndis_wlan: add return value validation
Function create_singlethread_workqueue() will return a NULL pointer if
there is no enough memory, and its return value should be validated
before using. However, in function rndis_wlan_bind(), its return value
is not checked. This may cause NULL dereference bugs. This patch fixes
it.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-04-26 12:03:49 +03:00
Pan Bian
dc3f89c38a libertas: check return value of alloc_workqueue
Function alloc_workqueue() will return a NULL pointer if there is no
enough memory, and its return value should be validated before using.
However, in function if_spi_probe(), its return value is not checked.
This may result in a NULL dereference bug. This patch fixes the bug.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-04-26 12:03:24 +03:00
Pan Bian
5fb01e91da mt7601u: check return value of alloc_skb
Function alloc_skb() will return a NULL pointer if there is no enough
memory. However, in function mt7601u_mcu_msg_alloc(), its return value
is not validated before it is used. This patch fixes it.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Acked-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-04-26 12:01:58 +03:00
Maksim Salau
2f6ae79cb0 orinoco_usb: Fix buffer on stack
Allocate buffer on HEAP instead of STACK for a local variable
that is to be sent using usb_control_msg().

Signed-off-by: Maksim Salau <maksim.salau@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-04-26 12:01:10 +03:00
Colin Ian King
bea35f90db orinoco: fix spelling mistake: "Registerred" -> "Registered"
trivial fix to spelling mistake in dbg_dbg message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-04-26 11:59:01 +03:00
Larry Finger
46cfa2148e rtlwifi: rtl8821ae: setup 8812ae RFE according to device type
Current channel switch implementation sets 8812ae RFE reg value assuming
that device always has type 2.

Extend possible RFE types set and write corresponding reg values.

Source for new code is
http://dlcdnet.asus.com/pub/ASUS/wireless/PCE-AC51/DR_PCE_AC51_20232801152016.zip

Signed-off-by: Maxim Samoylov <max7255@gmail.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>
Cc: Pkshih <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>
2017-04-26 11:58:03 +03:00
Eric Dumazet
7acedaf5c4 net: move xdp_prog field in RX cache lines
(struct net_device, xdp_prog) field should be moved in RX cache lines,
reducing latencies when a single packet is received on idle host,
since netif_elide_gro() needs it.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 16:25:36 -04:00
Wei Yongjun
5e1fc7c5ba drivers: net: xgene-v2: Fix error return code in xge_mdio_config()
Fix to return error code -ENODEV from the no PHY found error
handling case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 13:48:06 -04:00
David S. Miller
b5cdae3291 net: Generic XDP
This provides a generic SKB based non-optimized XDP path which is used
if either the driver lacks a specific XDP implementation, or the user
requests it via a new IFLA_XDP_FLAGS value named XDP_FLAGS_SKB_MODE.

It is arguable that perhaps I should have required something like
this as part of the initial XDP feature merge.

I believe this is critical for two reasons:

1) Accessibility.  More people can play with XDP with less
   dependencies.  Yes I know we have XDP support in virtio_net, but
   that just creates another depedency for learning how to use this
   facility.

   I wrote this to make life easier for the XDP newbies.

2) As a model for what the expected semantics are.  If there is a pure
   generic core implementation, it serves as a semantic example for
   driver folks adding XDP support.

One thing I have not tried to address here is the issue of
XDP_PACKET_HEADROOM, thanks to Daniel for spotting that.  It seems
incredibly expensive to do a skb_cow(skb, XDP_PACKET_HEADROOM) or
whatever even if the XDP program doesn't try to push headers at all.
I think we really need the verifier to somehow propagate whether
certain XDP helpers are used or not.

v5:
 - Handle both negative and positive offset after running prog
 - Fix mac length in XDP_TX case (Alexei)
 - Use rcu_dereference_protected() in free_netdev (kbuild test robot)

v4:
 - Fix MAC header adjustmnet before calling prog (David Ahern)
 - Disable LRO when generic XDP is installed (Michael Chan)
 - Bypass qdisc et al. on XDP_TX and record the event (Alexei)
 - Do not perform generic XDP on reinjected packets (DaveM)

v3:
 - Make sure XDP program sees packet at MAC header, push back MAC
   header if we do XDP_TX.  (Alexei)
 - Elide GRO when generic XDP is in use.  (Alexei)
 - Add XDP_FLAG_SKB_MODE flag which the user can use to request generic
   XDP even if the driver has an XDP implementation.  (Alexei)
 - Report whether SKB mode is in use in rtnl_xdp_fill() via XDP_FLAGS
   attribute.  (Daniel)

v2:
 - Add some "fall through" comments in switch statements based
   upon feedback from Andrew Lunn
 - Use RCU for generic xdp_prog, thanks to Johannes Berg.

Tested-by: Andy Gospodarek <andy@greyhouse.net>
Tested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 13:33:49 -04:00
Wei Yongjun
2f7878c06e qed: fix invalid use of sizeof in qed_alloc_qm_data()
sizeof() when applied to a pointer typed expression gives the
size of the pointer, not that of the pointed data.

Fixes: b5a9ee7cf3 ("qed: Revise QM configuration")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:59:36 -04:00
Teng Qin
8fe4592438 bpf: map_get_next_key to return first key on NULL
When iterating through a map, we need to find a key that does not exist
in the map so map_get_next_key will give us the first key of the map.
This often requires a lot of guessing in production systems.

This patch makes map_get_next_key return the first key when the key
pointer in the parameter is NULL.

Signed-off-by: Teng Qin <qinteng@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:57:45 -04:00
Mike Maloney
472ecf084a selftests/net: Fix broken test case in psock_fanout
The error return falue form sock_fanout_open is -1, not zero.  One test
case was checking for 0 instead of -1.

Tested: Built and tested in clean client.
Signed-off-by: Mike Maloney <maloney@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:56:17 -04:00
Ivan Khoronzhuk
799dbe3e1c net: ethernet: ti: netcp_core: remove unused compl queue mapping
This code is unused and probably was unintentionally left while
moving completion queue mapping in submit function.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:54:47 -04:00
David S. Miller
c1a9f80e04 Merge branch 'qed-vf-tunnel'
Manish Chopra says:

====================
qed/qede: VF tunnelling support

With this series VFs can run vxlan/geneve/gre tunnels over it.
Please consider applying this series to "net-next"
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:49:33 -04:00
Chopra, Manish
eaf3c0c6b4 qed - VF tunnelling support [VXLAN/GENEVE/GRE]
This patch adds hardware channel APIs support between
VF and PF for tunnelling configuration for the VFs.
According to that configuration VFs can run VXLAN/GENEVE/GRE
tunnels over it with tunnel features offloaded.

Using these APIs VF can also request for UDP ports configuration
to the PF, although PF and it's child VFs share the same port.

Signed-off-by: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:49:32 -04:00
Chopra, Manish
97379f15c2 qed/qede: Add UDP ports in bulletin board
This patch adds support for UDP ports in bulletin board
to notify UDP ports change to the VFs

Signed-off-by: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:49:31 -04:00
Chopra, Manish
327a2b750c qede: Configure UDP ports in local context.
This patch configures UDP ports locally instead of
configuring them in deferred context which would be
helpful in synchronizing UDP ports configuration for VFs
which will be enabled in further patches.

Signed-off-by: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:49:31 -04:00
Chopra, Manish
369bfd4ec7 qede: Disable tunnel offloads for non offloaded UDP ports
This patch disables tunnel offloads via ndo_features_check()
if given UDP port is not offloaded to hardware. This in turn
allows to run multiple tunnel interfaces using different UDP ports.

Signed-off-by: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:49:31 -04:00
Chopra, Manish
19489c7f0d qed/qede: Enable tunnel offloads based on hw configuration
This patch enables tunnel feature offloads based on hw configuration
at initialization time instead of enabling them always.

Signed-off-by: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:49:31 -04:00
Chopra, Manish
1996843012 qed: refactor tunnelling - API/Structs
This patch changes the tunnel APIs to use per tunnel
info instead of using bitmasks for all tunnels and also
uses single struct to hold the data to prepare multiple
variant of tunnel configuration ramrods to be sent to the hardware.

Signed-off-by: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:49:30 -04:00
David S. Miller
36784277c5 Merge branch 'l2tpeth-info'
Guillaume Nault says:

====================
l2tp: add informations about l2tpeth interfaces in /sys

Patch #1 lets userspace retrieve the naming scheme of an l2tpeth
interface, using /sys/class/net/<iface>/name_assign_type.

Patch #2 adds the DEVTYPE field in /sys/class/net/<iface>/uevent so
that userspace can reliably know if a device is an l2tpeth interface.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:41:57 -04:00
Guillaume Nault
a485c2b877 l2tp: define "l2tpeth" device type
Export type of l2tpeth interfaces to userspace
(/sys/class/net/<iface>/uevent).

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Acked-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:41:56 -04:00
Guillaume Nault
c39855febc l2tp: set name_assign_type for devices created by l2tp_eth.c
Export naming scheme used when creating l2tpeth interfaces
(/sys/class/net/<iface>/name_assign_type). This let userspace know if
the device's name has been generated automatically or defined manually.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Acked-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:41:56 -04:00
Jamal Hadi Salim
e0ee84ded7 net sched actions: Complete the JUMPX opcode
per discussion at netconf/netdev:
When we have an action that is capable of branching (example a policer),
we can achieve a continuation of the action graph by programming a
"continue" where we find an exact replica of the same filter rule with a lower
priority and the remainder of the action graph. When you have 100s of thousands
of filters which require such a feature it gets very inefficient to do two
lookups.

This patch completes a leftover feature of action codes. Its time has come.

Example below where a user labels packets with a different skbmark on ingress
of a port depending on whether they have/not exceeded the configured rate.
This mark is then used to make further decisions on some egress port.

 #rate control, very low so we can easily see the effect
sudo $TC actions add action police rate 1kbit burst 90k \
conform-exceed pipe/jump 2 index 10
 # skbedit index 11 will be used if the user conforms
sudo $TC actions add action skbedit mark 11 ok index 11
 # skbedit index 12 will be used if the user does not conform
sudo $TC actions add action skbedit mark 12 ok index 12

 #lets bind the user ..
sudo $TC filter add dev $ETH parent ffff: protocol ip prio 8 u32 \
match ip dst 127.0.0.8/32 flowid 1:10 \
action police index 10 \
action skbedit index 11 \
action skbedit index 12

 #run a ping -f and see what happens..
 #
jhs@foobar:~$ sudo $TC -s filter ls dev $ETH parent ffff: protocol ip
filter pref 8 u32
filter pref 8 u32 fh 800: ht divisor 1
filter pref 8 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:10  (rule hit 2800 success 1005)
  match 7f000008/ffffffff at 16 (success 1005 )
	action order 1:  police 0xa rate 1Kbit burst 23440b mtu 2Kb action pipe/jump 2 overhead 0b
	ref 2 bind 1 installed 207 sec used 122 sec
	Action statistics:
	Sent 84420 bytes 1005 pkt (dropped 0, overlimits 721 requeues 0)
	backlog 0b 0p requeues 0

	action order 2:  skbedit mark 11 pass
	 index 11 ref 2 bind 1 installed 204 sec used 122 sec
 	Action statistics:
	Sent 60564 bytes 721 pkt (dropped 0, overlimits 0 requeues 0)
	backlog 0b 0p requeues 0

	action order 3:  skbedit mark 12 pass
	 index 12 ref 2 bind 1 installed 201 sec used 122 sec
 	Action statistics:
	Sent 23856 bytes 284 pkt (dropped 0, overlimits 0 requeues 0)
	backlog 0b 0p requeues 0

Not bad, about 28% non-conforming packets..

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 11:30:06 -04:00
David S. Miller
45a6f3bca6 linux-can-next-for-4.12-20170425
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Merge tag 'linux-can-next-for-4.12-20170425' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2017-04-25

this is a pull request of 21 patches for net-next/master.

There are 4 patches by Stephane Grosjean for the PEAK PCAN-PCIe FD
CAN-FD boards. The next 7 patches are by Mario Huettel, which add
support for M_CAN IP version >= v3.1.x to the m_can driver. A patch by
Remigiusz Kołłątaj adds support for the Microchip CAN BUS Analyzer. 8
patches by Oliver Hartkopp complete the initial CAN network namespace
support. Wei Yongjun's patch for the ti_hecc driver fixes the return
value check in the probe function.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 10:52:47 -04:00
Florian Westphal
3133822f5a ipvlan: use pernet operations and restrict l3s hooks to master netns
commit 4fbae7d83c ("ipvlan: Introduce l3s mode") added
registration of netfilter hooks via nf_register_hooks().

This API provides the illusion of 'global' netfilter hooks by placing the
hooks in all current and future network namespaces.

In case of ipvlan the hook appears to be only needed in the namespace
that contains the ipvlan master device (i.e., usually init_net), so
placing them in all namespaces is not needed.

This switches ipvlan driver to pernet operations, and then only registers
hooks in namespaces where a ipvlan master device is set to l3s mode.

Extra care has to be taken when the master device is moved to another
namespace, as we might have to 'move' the netfilter hooks too.

This is done by storing the namespace the ipvlan port was created in.
On REGISTER event, do (un)register operations in the old/new namespaces.

This will also allow removal of the nf_register_hooks() in a future patch.

Cc: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-25 10:43:22 -04:00
Wei Yongjun
b655f0e96d can: ti_hecc: fix return value check in ti_hecc_probe()
In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: dabf54dd1c ("can: ti_hecc: Convert TI HECC driver to DT only driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 10:03:40 +02:00
Oliver Hartkopp
5e64ebc1c2 can: enable module auto loading for virtual CAN interfaces
Autoload the vcan module when a vcan instance is to be created by
'ip link add type vcan'

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:04:31 +02:00
Oliver Hartkopp
a8f820a380 can: add Virtual CAN Tunnel driver (vxcan)
Similar to the virtual ethernet driver veth, vxcan implements a
local CAN traffic tunnel between two virtual CAN network devices.
See Kconfig entry for details.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:04:30 +02:00
Oliver Hartkopp
1ef83310b8 can: network namespace support for CAN gateway
The CAN gateway was not implemented as per-net in the initial network
namespace support by Mario Kicherer (8e8cda6d73).
This patch enables the CAN gateway to be used in different namespaces.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:04:30 +02:00
Oliver Hartkopp
384317ef41 can: network namespace support for CAN_BCM protocol
The CAN_BCM protocol and its procfs entries were not implemented as per-net
in the initial network namespace support by Mario Kicherer (8e8cda6d73).
This patch adds the missing per-net functionality for the CAN BCM.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:04:29 +02:00
Oliver Hartkopp
cb5635a367 can: complete initial namespace support
The statistics and its proc output was not implemented as per-net in the
initial network namespace support by Mario Kicherer (8e8cda6d73).
This patch adds the missing per-net statistics for the CAN subsystem.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:04:29 +02:00
Oliver Hartkopp
f2e72f43e7 can: remove obsolete definitions
can_rx_alldev_list is a per-net data structure now. Remove it's definition
here and can_rx_dev_list too.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:04:28 +02:00
Oliver Hartkopp
48452c169d can: remove obsolete pernet_operations definitions
The namespace support for the CAN subsystem does not need any additional
memory. So when ".size = 0" there's no extra memory allocated by the system.
And therefore ".id" is obsolete too.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:04:28 +02:00
Oliver Hartkopp
a7bbd28f04 can: fix memory leak in initial namespace support
The can_rx_alldev_list is a per-net data structure now and allocated in
can_pernet_init(). Make sure the memory is free'd in can_pernet_exit() too.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:04:27 +02:00
Remigiusz Kołłątaj
51f3baad7d can: mcba_usb: Add support for Microchip CAN BUS Analyzer
SocketCAN driver for Microchip CAN BUS Analyzer
(http://www.microchip.com/development-tools/)

Changes in v4:
- possible memory leak fixed in mcba_usb_write_bulk_callback
- LED support added
- failure handling in mcba_usb_probe improved
- C99 initializers for structs on stack

Changes in v3:
- improved/simplified CAN ID conversion
- functions for transmission of skb and cmd separated
- fixed/improved netif_stop_queue handling
- style/cosmetic corrections

Changes in v2:
- Termination handling reimplemented to fit new netlink API
(IFLA_CAN_TERMINATION)
- Bitrate handling reimplemented to fit new netlink API
(IFLA_CAN_BITRATE)
- CAN ID conversion refactored (changed from macro to inline functions)
- CAN DLC handling using get_can_dlc()
- Endianness handling for can_speed introduced
- Debugging removed
- Redundant error prints removed
- Style/cosmetic corrections (i.e. macro names, redefs, inits etc.)

Signed-off-by: Remigiusz Kołłątaj <remigiusz.kollataj@mobica.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:49 +02:00
Mario Huettel
10c1c3975a can: m_can: Enable TX FIFO Handling for M_CAN IP version >= v3.1.x
* Added defines for TX Event FIFO Element
* Adapted ndo_start_xmit function.
  For versions >= v3.1.x it uses the TX FIFO to optimize the data
  throughput. It stores the echo skb at the same index as in the
  M_CAN's TX FIFO. The frame's message marker is set to this index.
  This message marker is received in the TX Event FIFO after
  the message was successfully transmitted. It is used to echo the
  correct echo skb back to the network stack.
* Added m_can_echo_tx_event function. It reads all received
  message markers in the TX Event FIFO and loops back the
  corresponding echo skbs.
* ISR checks for new TX Event Entry interrupt for version >= 3.1.x.

Signed-off-by: Mario Huettel <mario.huettel@gmx.net>
Reviewed-by: Oliver Hartkopp <socketcan@hartkopp.net>
Tested-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:48 +02:00
Mario Huettel
428479e471 can: m_can: Configuration for TX and TX event FIFOs
* TX/TX Event FIFO sizes are configured for version >= v3.1.x

Signed-off-by: Mario Huettel <mario.huettel@gmx.net>
Tested-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:48 +02:00
Mario Huettel
b03cfc5bb0 can: m_can: Enable M_CAN version dependent initialization
This patch adapts the initialization of the M_CAN. So it can be used
with all versions >= 3.0.x.

Changes:
* Added version element to m_can_priv structure to hold M_CAN version.
* Renamed bittiming structs for version 3.0.x
* Added new bittiming structs for version >= 3.1.x
* Function alloc_m_can_dev takes 2 new arguments. The TX FIFO size and the
  base address of the module.
* Chip configuration for CAN_CTRLMODE_LOOPBACK is changed: Enabled
  CCCR_MON bit. In combination with TEST_LBCK it activates the internal
  loopback mode. Leaving CCCR_MON '0' results in external loopback mode.
* Clocks are temporarily enabled by platform_propbe function in order to
  allow read access to the Core Release register and the Control Register.
  Registers are used to detect M_CAN version and optional Non-ISO Feature.

Initialization of M_CAN for version >= 3.1.x:
* TX FIFO of M_CAN is used to transmit frames. The driver does not need to
  stop the tx queue after each frame sent.
* Initialization of TX Event FIFO is added.
* NON-ISO is fixed for all M_CAN versions < 3.2.x. Version 3.2.x _can_ have
  the NISO (Non-ISO) bit which can switch the mode of the M_CAN to Non-ISO
  mode. This bit does not have to be writeable. Therefore it is checked.
  If it is writable Non-ISO support is added to the controllers supported
  CAN modes.

New Functions:
* Function to check the Core Release version. The read value determines the
  behaviour of the driver.
* Function to check if the NISO bit for version >= 3.2.x is implemented.

Signed-off-by: Mario Huettel <mario.huettel@gmx.net>
Reviewed-by: Oliver Hartkopp <socketcan@hartkopp.net>
Tested-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:47 +02:00
Mario Huettel
5e1bd15a37 can: m_can: Updated register defines to newest version
* Updated register defines to newest M_CAN version (v3.2.1).
* Changed defines in the whole code.

Signed-off-by: Mario Huettel <mario.huettel@gmx.net>
Reviewed-by: Oliver Hartkopp <socketcan@hartkopp.net>
Tested-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:47 +02:00
Mario Huettel
ee8c3f6f75 can: m_can: Removed virtual address from print
The virtual address of the device was printed. I removed it because it
leaks internal information.

Signed-off-by: Mario Huettel <mario.huettel@gmx.net>
Tested-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:46 +02:00
Mario Huettel
8f265895df can: m_can: Removed initialization of FIFO water marks
FIFO water marks disabled because the driver doesn't handle water mark
events.

Signed-off-by: Mario Huettel <mario.huettel@gmx.net>
Reviewed-by: Oliver Hartkopp <socketcan@hartkopp.net>
Tested-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:46 +02:00
Mario Huettel
52973810b5 can: m_can: Disabled Interrupt Line 1
* Disabled interrupt line 1. The driver didn't use it.

Signed-off-by: Mario Huettel <mario.huettel@gmx.net>
Tested-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:45 +02:00
Stephane Grosjean
8ac8321e4a can: peak: add support for PEAK PCAN-PCIe FD CAN-FD boards
This patch adds the support of the PCAN-PCI Express FD boards made
by PEAK-System, for computers using the PCI Express slot.

The PCAN-PCI Express FD has one or two CAN FD channels, depending
on the model. A galvanic isolation of the CAN ports protects
the electronics of the card and the respective computer against
disturbances of up to 500 Volts. The PCAN-PCI Express FD can be operated
with ambient temperatures in a range of -40 to +85 °C.

Such boards run an extented version of the CAN-FD IP running into USB
CAN-FD interfaces from PEAK-System, so this patch adds several new commands
and their corresponding data types to the PEAK CAN-FD common definitions
header file too.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:45 +02:00
Stephane Grosjean
c3df7c5755 can: peak: move header file to new can common subdir
The CAN-FD IP from PEAK-System runs into several kinds of PC CAN-FD
interfaces. Up to now, only the USB CAN-FD adapters were supported by
the Kernel. In order to prepare the adding of some new non-USB CAN-FD
interfaces, this patch moves - and rename - the IP definitions file
from its private (usb) sub-directory into a - newly created - CAN specific
one.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:44 +02:00
Stephane Grosjean
113ab88b2b can: peak: fix usage of const qualifier in pointers args
Fixes the usage of the const qualifier in the memory pointer arguments
of the declared inline functions. By changing the line containing "const",
this patch also changes the name of the arg into a more usual one.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:44 +02:00
Stephane Grosjean
81c5e13d90 can: peak: fix usage of usb specific data type
This patch fixes the wrong usage of a specific USB data type into a common
header file. This common header file is intended to define the common data
types and values that define access to the PEAK-System CAN-FD IP, whatever
the PC interface is.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-04-25 09:00:43 +02:00