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If retransmit record hint fall into the cleanup window we will
free it by just walking the list. No need to duplicate the code.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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TLS code has a number of #ifdefs which make the code a little
harder to follow. Recent fixes removed the ifdef around the
TLS_HW define, so we can switch to the often used pattern
of defining tls_device functions as empty static inlines
in the header when CONFIG_TLS_DEVICE=n.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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On setsockopt path we need to hold device_offload_lock from
the moment we check netdev is up until the context is fully
ready to be added to the tls_device_list.
No need to hold it around the get_netdev_for_sock().
Change the code and remove the confusing comment.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reusing parts of error path for normal exit will make
next commit harder to read, untangle the two.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since we already have the pointer to the full original sk_proto
stored use that instead of storing all individual callback
pointers as well.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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IN_MULTICAST's primary intent is as a uapi macro.
Elsewhere in the kernel we use ipv4_is_multicast consistently.
This patch unifies linux's multicast checks to use that function
rather than this macro.
Signed-off-by: Dave Taht <dave.taht@gmail.com>
Reviewed-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Variable port_rate is being initialized with a value that is never read
and is being re-assigned a little later on. The assignment is redundant
and hence can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Shannon Nelson says:
====================
ionic: Add ionic driver
This is a patch series that adds the ionic driver, supporting the Pensando
ethernet device.
In this initial patchset we implement basic transmit and receive. Later
patchsets will add more advanced features.
Our thanks to Saeed Mahameed, David Miller, Andrew Lunn, Michal Kubecek,
Jacub Kicinski, Jiri Pirko, Yunsheng Lin, and the ever present kbuild
test robots for their comments and suggestions.
New in v7:
- stop Tx queue if no descriptor space left after a Tx
- return ETIMEDOUT if the module data can't be copied out safely
- remove unnecessary synchronize_irq() before free_irq()
- use eth_prepare_mac_addr_change() and eth_commit_mac_addr_change() helpers
- propagate error out of ionic_dl_info_get()
New in v6:
- added a new patch with devlink info tags for ASIC and general FW
- use the new devlink info tags in the driver
- fixed up TxRx cleanup on setup failure
- allow for possible 0 address from dma mapping of Tx buffers
- remove a few more unnecessary debugfs error checks
- use innocuous hardcoded strings in the identify message
- removed a couple of unused functions and definitions
- fix a leak in the error handling of port_info setup
- changed from BUILD_BUG_ON() to static_assert()
New in v5:
- code reorganized for more sane layout, with a side benefit of getting
rid of a "defined but not used" complaint after patch 5
- added "ionic_" prefix to struct definitions and fixed up remaining
reverse christmas tree formatting (I think I got them all...)
- ndo_open and ndo_stop reworked for better error recovery
- interrupt coalescing enabled at driver start
- unnecessary log messaging removed from events
- double copy added in the module prom read to assure a clean copy
- added BQL counting
- fixed a TSO unmap issue found in testing
- generalize a bit-flag wait with timeout
- added devlink into earlier code and dropped patch 19
New in v4:
- use devlink struct alloc for ionic device specific struct
- add support for devlink_port
- fixup devlink fixed vs running version usage
- use bitmap_copy() instead of memcpy() for link_ksettings
- don't bother to zero out the advertising bits before copying
in the support bits
- drop unknown xcvr types (will be expanded on later)
- flap the connection to force auto-negotiation
- use is_power_of_2() rather than open code
- simplify set/get_pauseparam use of pause->autoneg
- add a couple comments about NIC status data updated in DMA spaces
New in v3:
- use le32_to_cpu() on queue_count[] values in debugfs
- dma_free_coherent() can handle NULL pointers
- remove unused SS_TEST from ethtool handlers
- one more case of stop the tx ring if there is no room
- remove a couple of stray // comments
New in v2:
- removed debugfs error checking and cut down on debugfs use
- remove redundant bounds checking on incoming values for mtu and ethtool
- don't alloc rx_filter memory until the match type has been checked
- free the ionic struct on remove
- simplified link_up and netif_carrier_ok comparison
- put stats into ethtool -S, out of debugfs
- moved dev_cmd and dev_info dumping to ethtool -d, out of debugfs
- added devlink support
- used kernel's rss init routines rather than open code
- set the Kbuild dependant on 64BIT
- cut down on some unnecessary log messaging
- cleaned up ionic_get_link_ksettings
- cleaned up other little code bits here and there
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Interrupt coalescing, tunable copybreak value, and
tx timeout.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add code to manipulate through ethtool the RSS configuration
used by the NIC.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add in the detailed statistics for ethtool -S that the driver
keeps as it processes packets. Display of the additional
debug statistics can be enabled through the ethtool priv-flags
feature.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the netdev gets a new name from userland, pass that name
down to the NIC for internal tracking.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add both the Tx and Rx queue setup and handling. The related
stats display comes later. Instead of using the generic napi
routines used by the slow-path commands, the Tx and Rx paths
are simplified and inlined in one file in order to get better
compiler optimizations.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add in the basic ethtool callbacks for device information
and control.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add code to handle the link status event, and wire up the
basic netdev hardware stats.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the Rx filtering and rx_mode NDO callbacks. Also add
the deferred work thread handling needed to manage the filter
requests outside of the netif_addr_lock spinlock.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Set up the infrastructure for managing Rx filters. We can't ask the
hardware for what filters it has, so we keep a local list of filters
that we've pushed into the HW.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Set up the initial NDO structure and callbacks for netdev
to use, and register the netdev. This will allow us to do
a few basic operations on the device, but no traffic yet.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The AdminQ is fine for sending messages and requests to the NIC,
but we also need to have events published from the NIC to the
driver. The NotifyQ handles this for us, using the same interrupt
as AdminQ.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add AdminQ specific message requests and completion handling.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Most of the NIC configuration happens through the AdminQ message
queue. NAPI is used for basic interrupt handling and message
queue management. These routines are set up to be shared among
different types of queues when used in slow-path handling.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ionic interrupt model is based on interrupt control blocks
accessed through the PCI BAR. Doorbell registers are used by
the driver to signal to the NIC that requests are waiting on
the message queues. Interrupts are used by the NIC to signal
to the driver that answers are waiting on the completion queues.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The LIF is the Logical Interface, which represents the external
connections. The NIC can multiplex many LIFs to a single port,
but in most setups, LIF0 is the primary control for the port.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The port management commands apply to the physical port
associated with the PCI device, which might be shared among
several logical interfaces.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ionic device has a small set of PCI registers, including a
device control and data space, and a large set of message
commands.
Also adds new DEVLINK_INFO_VERSION_GENERIC tags for
ASIC_ID, ASIC_REV, and FW.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds a basic driver framework for the Pensando IONIC
network device. There is no functionality right now other than
the ability to load and unload.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current tag set is still rather small and needs a couple
more tags to help with ASIC identification and to have a
more generic FW version.
Cc: Jiri Pirko <jiri@resnulli.us>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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René van Dorst says:
====================
net: dsa: mt7530: Convert to PHYLINK and add support for port 5
1. net: dsa: mt7530: Convert to PHYLINK API
This patch converts mt7530 to PHYLINK API.
2. dt-bindings: net: dsa: mt7530: Add support for port 5
3. net: dsa: mt7530: Add support for port 5
These 2 patches adding support for port 5 of the switch.
v2->v3:
* Removed 'status = "okay"' lines in patch #2
* Change a port 5 setup message in a debug message in patch #3
* Added ack-by and tested-by tags
v1->v2:
* Mostly phylink improvements after review.
rfc -> v1:
* Mostly phylink improvements after review.
* Drop phy isolation patches. Adds no value for now.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adding support for port 5.
Port 5 can muxed/interface to:
- internal 5th GMAC of the switch; can be used as 2nd CPU port or as
extra port with an external phy for a 6th ethernet port.
- internal PHY of port 0 or 4; Used in most applications so that port 0
or 4 is the WAN port and interfaces with the 2nd GMAC of the SOC.
Signed-off-by: René van Dorst <opensource@vdorst.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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MT7530 port 5 has many modes/configurations.
Update the documentation how to use port 5.
Signed-off-by: René van Dorst <opensource@vdorst.com>
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert mt7530 to PHYLINK API
Signed-off-by: René van Dorst <opensource@vdorst.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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First, for AUTONEG_DISABLE, we only need to modify MII_BMCR.
Second, add advertising parameter for rtl8152_set_speed(). Add
RTL_ADVERTISED_xxx for advertising parameter of rtl8152_set_speed().
Then, the advertising settings from ethtool could be saved.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ioana Radulescu says:
====================
dpaa2-eth: Add new statistics counters
Recent firmware versions offer access to more DPNI statistics
counters. Add the relevant ones to ethtool interface stats.
Also we can now make use of a new counter for in flight egress frames
to avoid sleeping an arbitrary amount of time in the ndo_stop routine.
v2: in patch 2/3, treat separately the error case for unsupported
statistics pages
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Starting with firmware version MC10.18.0, a new counter for in flight
Tx frames is offered. Use it when bringing down the interface to
determine when all pending Tx frames have been processed by hardware
instead of sleeping a fixed amount of time.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Recent firmware versions expose more DPNI counters.
Export relevant ones via ethtool -S.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As we prepare to read more pages from the DPNI stat counters,
reorganize the code a bit to make it easier to extend.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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SAE J1939 is the vehicle bus recommended practice used for communication
and diagnostics among vehicle components. Originating in the car and
heavy-duty truck industry in the United States, it is now widely used in
other parts of the world.
J1939, ISO 11783 and NMEA 2000 all share the same high level protocol.
SAE J1939 can be considered the replacement for the older SAE J1708 and
SAE J1587 specifications.
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Elenita Hinds <ecathinds@gmail.com>
Signed-off-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Maxime Jayat <maxime.jayat@mobile-devices.fr>
Signed-off-by: Robin van der Gracht <robin@protonic.nl>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch prepares struct sockaddr_can for SAE J1939.
Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch is a preparation for SAE J1939 and adds CAN_J1939
socket type.
Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The size of this structure will be increased with J1939 support. To stay
binary compatible, the CAN_REQUIRED_SIZE macro is introduced for
existing CAN protocols.
Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This commit replaces my company's email address with a stable private
address.
Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The can_rx_unregister() can be called from NAPI (soft IRQ) context, at least
by j1939 stack. This leads to potential dead lock with &net->can.rcvlists_lock
called from can_rx_register:
===============================================================================
WARNING: inconsistent lock state
4.19.0-20181029-1-g3e67f95ba0d3 #3 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
testj1939/224 [HC0[0]:SC1[1]:HE1:SE0] takes:
1ad0fda3 (&(&net->can.rcvlists_lock)->rlock){+.?.}, at: can_rx_unregister+0x4c/0x1ac
{SOFTIRQ-ON-W} state was registered at:
lock_acquire+0xd0/0x1f4
_raw_spin_lock+0x30/0x40
can_rx_register+0x5c/0x14c
j1939_netdev_start+0xdc/0x1f8
j1939_sk_bind+0x18c/0x1c8
__sys_bind+0x70/0xb0
sys_bind+0x10/0x14
ret_fast_syscall+0x0/0x28
0xbedc9b64
irq event stamp: 2440
hardirqs last enabled at (2440): [<c01302c0>] __local_bh_enable_ip+0xac/0x184
hardirqs last disabled at (2439): [<c0130274>] __local_bh_enable_ip+0x60/0x184
softirqs last enabled at (2412): [<c08b0bf4>] release_sock+0x84/0xa4
softirqs last disabled at (2415): [<c013055c>] irq_exit+0x100/0x1b0
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(&net->can.rcvlists_lock)->rlock);
<Interrupt>
lock(&(&net->can.rcvlists_lock)->rlock);
*** DEADLOCK ***
2 locks held by testj1939/224:
#0: 168eb13b (rcu_read_lock){....}, at: netif_receive_skb_internal+0x3c/0x350
#1: 168eb13b (rcu_read_lock){....}, at: can_receive+0x88/0x1c0
===============================================================================
To avoid this situation, we should use spin_lock_bh() instead of spin_lock().
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Since using the "struct can_ml_priv" for the per device "struct
dev_rcv_lists" the call can_dev_rcv_lists_find() cannot fail anymore.
This patch simplifies af_can by removing the NULL pointer checks from
the dev_rcv_lists returned by can_dev_rcv_lists_find().
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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can_dev_rcv_lists
This patch removes the old method of allocating the per device protocol
specific memory via a netdevice_notifier. This had the drawback, that
the allocation can fail, leading to a lot of null pointer checks in the
code. This also makes the live cycle management of this memory quite
complicated.
This patch switches from the allocating the struct can_dev_rcv_lists in
a NETDEV_REGISTER call to using the dev->ml_priv, which is allocated by
the driver since the previous patch.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch introduces the CAN midlayer private structure ("struct
can_ml_priv") which should be used to hold protocol specific per device
data structures. For now it's only member is "struct can_dev_rcv_lists".
The CAN midlayer private is allocated via alloc_netdev()'s private and
assigned to "struct net_device::ml_priv" during device creation. This is
done transparently for CAN drivers using alloc_candev(). The slcan, vcan
and vxcan drivers which are not using alloc_candev() have been adopted
manually. The memory layout of the netdev_priv allocated via
alloc_candev() will looke like this:
+-------------------------+
| driver's priv |
+-------------------------+
| struct can_ml_priv |
+-------------------------+
| array of struct sk_buff |
+-------------------------+
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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registered CAN devices
The networking core takes care and unregisters every network device in
a namespace before calling the can_pernet_exit() hook. This patch
removes the unneeded cleanup.
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Suggested-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch replaces an open coded max by the proper kernel define max().
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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sensible name
This patch gives the variables holding the CAN receiver and the receiver
list a better name by renaming them from "r to "rcv" and "rl" to
"recv_list".
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch add the commonly used prefix "can_" to the find_dev_rcv_lists()
function and moves the "find" to the end, as the function returns a struct
can_dev_rcv_list. This improves the overall readability of the code.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch add the commonly used prefix "can_" to the find_rcv_list()
function and add the "find" to the end, as the function returns a struct
rcv_list. This improves the overall readability of the code.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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