Jianbo Liu [Thu, 24 Feb 2022 10:29:08 +0000 (10:29 +0000)]
flow_offload: reject offload for all drivers with invalid police parameters
As more police parameters are passed to flow_offload, driver can check
them to make sure hardware handles packets in the way indicated by tc.
The conform-exceed control should be drop/pipe or drop/ok. Besides,
for drop/ok, the police should be the last action. As hardware can't
configure peakrate/avrate/overhead, offload should not be supported if
any of them is configured.
Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jianbo Liu [Thu, 24 Feb 2022 10:29:07 +0000 (10:29 +0000)]
net: flow_offload: add tc police action parameters
The current police offload action entry is missing exceed/notexceed
actions and parameters that can be configured by tc police action.
Add the missing parameters as a pre-step for offloading police actions
to hardware.
Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 27 Feb 2022 11:06:14 +0000 (11:06 +0000)]
Merge branch 'dsa-fdb-isolation'
Vladimir Oltean says:
====================
DSA FDB isolation
There are use cases which need FDB isolation between standalone ports
and bridged ports, as well as isolation between ports of different
bridges. Most of these use cases are a result of the fact that packets
can now be partially forwarded by the software bridge, so one port might
need to send a packet to the CPU but its FDB lookup will see that it can
forward it directly to a bridge port where that packet was autonomously
learned. So the source port will attempt to shortcircuit the CPU and
forward autonomously, which it can't due to the forwarding isolation we
have in place. So we will have packet drops instead of proper operation.
Additionally, before DSA can implement IFF_UNICAST_FLT for standalone
ports, we must have control over which database we install FDB entries
corresponding to port MAC addresses in. We don't want to hinder the
operation of the bridging layer.
DSA does not have a driver API that encourages FDB isolation, so this
needs to be created. The basis for this is a new struct dsa_db which
annotates each FDB and MDB entry with the database it belongs to.
The sja1105 and felix drivers are modified to observe the dsa_db
argument, and therefore, enforce the FDB isolation.
Compared to the previous RFC patch series from August:
https://patchwork.kernel.org/project/netdevbpf/cover/
20210818120150.892647-1-vladimir.oltean@nxp.com/
what is different is that I stopped trying to make SWITCHDEV_FDB_{ADD,DEL}_TO_DEVICE
blocking, instead I'm making use of the fact that DSA waits for switchdev FDB work
items to finish before a port leaves the bridge. This is possible since:
https://patchwork.kernel.org/project/netdevbpf/patch/
20211024171757.3753288-7-vladimir.oltean@nxp.com/
Additionally, v2 is also rebased over the DSA LAG FDB work.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 25 Feb 2022 09:22:25 +0000 (11:22 +0200)]
net: mscc: ocelot: enforce FDB isolation when VLAN-unaware
Currently ocelot uses a pvid of 0 for standalone ports and ports under a
VLAN-unaware bridge, and the pvid of the bridge for ports under a
VLAN-aware bridge. Standalone ports do not perform learning, but packets
received on them are still subject to FDB lookups. So if the MAC DA that
a standalone port receives has been also learned on a VLAN-unaware
bridge port, ocelot will attempt to forward to that port, even though it
can't, so it will drop packets.
So there is a desire to avoid that, and isolate the FDBs of different
bridges from one another, and from standalone ports.
The ocelot switch library has two distinct entry points: the felix DSA
driver and the ocelot switchdev driver.
We need to code up a minimal bridge_num allocation in the ocelot
switchdev driver too, this is copied from DSA with the exception that
ocelot does not care about DSA trees, cross-chip bridging etc. So it
only looks at its own ports that are already in the same bridge.
The ocelot switchdev driver uses the bridge_num it has allocated itself,
while the felix driver uses the bridge_num allocated by DSA. They are
both stored inside ocelot_port->bridge_num by the common function
ocelot_port_bridge_join() which receives the bridge_num passed by value.
Once we have a bridge_num, we can only use it to enforce isolation
between VLAN-unaware bridges. As far as I can see, ocelot does not have
anything like a FID that further makes VLAN 100 from a port be different
to VLAN 100 from another port with regard to FDB lookup. So we simply
deny multiple VLAN-aware bridges.
For VLAN-unaware bridges, we crop the 4000-4095 VLAN region and we
allocate a VLAN for each bridge_num. This will be used as the pvid of
each port that is under that VLAN-unaware bridge, for as long as that
bridge is VLAN-unaware.
VID 0 remains only for standalone ports. It is okay if all standalone
ports use the same VID 0, since they perform no address learning, the
FDB will contain no entry in VLAN 0, so the packets will always be
flooded to the only possible destination, the CPU port.
The CPU port module doesn't need to be member of the VLANs to receive
packets, but if we use the DSA tag_8021q protocol, those packets are
part of the data plane as far as ocelot is concerned, so there it needs
to. Just ensure that the DSA tag_8021q CPU port is a member of all
reserved VLANs when it is created, and is removed when it is deleted.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 25 Feb 2022 09:22:24 +0000 (11:22 +0200)]
net: dsa: sja1105: enforce FDB isolation
For sja1105, to enforce FDB isolation simply means to turn on
Independent VLAN Learning unconditionally, and to remap VLAN-unaware FDB
and MDB entries towards the private VLAN allocated by tag_8021q for each
bridge.
Standalone ports each have their own standalone tag_8021q VLAN. No
learning happens in that VLAN due to:
- learning being disabled on standalone user ports
- learning being disabled on the CPU port (we use
assisted_learning_on_cpu_port which only installs bridge FDBs)
VLAN-aware ports learn FDB entries with the bridge VLANs.
VLAN-unaware bridge ports learn with the tag_8021q VLAN for bridging.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 25 Feb 2022 09:22:23 +0000 (11:22 +0200)]
net: dsa: pass extack to .port_bridge_join driver methods
As FDB isolation cannot be enforced between VLAN-aware bridges in lack
of hardware assistance like extra FID bits, it seems plausible that many
DSA switches cannot do it. Therefore, they need to reject configurations
with multiple VLAN-aware bridges from the two code paths that can
transition towards that state:
- joining a VLAN-aware bridge
- toggling VLAN awareness on an existing bridge
The .port_vlan_filtering method already propagates the netlink extack to
the driver, let's propagate it from .port_bridge_join too, to make sure
that the driver can use the same function for both.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 25 Feb 2022 09:22:22 +0000 (11:22 +0200)]
net: dsa: request drivers to perform FDB isolation
For DSA, to encourage drivers to perform FDB isolation simply means to
track which bridge does each FDB and MDB entry belong to. It then
becomes the driver responsibility to use something that makes the FDB
entry from one bridge not match the FDB lookup of ports from other
bridges.
The top-level functions where the bridge is determined are:
- dsa_port_fdb_{add,del}
- dsa_port_host_fdb_{add,del}
- dsa_port_mdb_{add,del}
- dsa_port_host_mdb_{add,del}
aka the pre-crosschip-notifier functions.
Changing the API to pass a reference to a bridge is not superfluous, and
looking at the passed bridge argument is not the same as having the
driver look at dsa_to_port(ds, port)->bridge from the ->port_fdb_add()
method.
DSA installs FDB and MDB entries on shared (CPU and DSA) ports as well,
and those do not have any dp->bridge information to retrieve, because
they are not in any bridge - they are merely the pipes that serve the
user ports that are in one or multiple bridges.
The struct dsa_bridge associated with each FDB/MDB entry is encapsulated
in a larger "struct dsa_db" database. Although only databases associated
to bridges are notified for now, this API will be the starting point for
implementing IFF_UNICAST_FLT in DSA. There, the idea is to install FDB
entries on the CPU port which belong to the corresponding user port's
port database. These are supposed to match only when the port is
standalone.
It is better to introduce the API in its expected final form than to
introduce it for bridges first, then to have to change drivers which may
have made one or more assumptions.
Drivers can use the provided bridge.num, but they can also use a
different numbering scheme that is more convenient.
DSA must perform refcounting on the CPU and DSA ports by also taking
into account the bridge number. So if two bridges request the same local
address, DSA must notify the driver twice, once for each bridge.
In fact, if the driver supports FDB isolation, DSA must perform
refcounting per bridge, but if the driver doesn't, DSA must refcount
host addresses across all bridges, otherwise it would be telling the
driver to delete an FDB entry for a bridge and the driver would delete
it for all bridges. So introduce a bool fdb_isolation in drivers which
would make all bridge databases passed to the cross-chip notifier have
the same number (0). This makes dsa_mac_addr_find() -> dsa_db_equal()
say that all bridge databases are the same database - which is
essentially the legacy behavior.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 25 Feb 2022 09:22:21 +0000 (11:22 +0200)]
net: dsa: tag_8021q: rename dsa_8021q_bridge_tx_fwd_offload_vid
The dsa_8021q_bridge_tx_fwd_offload_vid is no longer used just for
bridge TX forwarding offload, it is the private VLAN reserved for
VLAN-unaware bridging in a way that is compatible with FDB isolation.
So just rename it dsa_tag_8021q_bridge_vid.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 25 Feb 2022 09:22:20 +0000 (11:22 +0200)]
net: dsa: tag_8021q: merge RX and TX VLANs
In the old Shared VLAN Learning mode of operation that tag_8021q
previously used for forwarding, we needed to have distinct concepts for
an RX and a TX VLAN.
An RX VLAN could be installed on all ports that were members of a given
bridge, so that autonomous forwarding could still work, while a TX VLAN
was dedicated for precise packet steering, so it just contained the CPU
port and one egress port.
Now that tag_8021q uses Independent VLAN Learning and imprecise RX/TX
all over, those lines have been blurred and we no longer have the need
to do precise TX towards a port that is in a bridge. As for standalone
ports, it is fine to use the same VLAN ID for both RX and TX.
This patch changes the tag_8021q format by shifting the VLAN range it
reserves, and halving it. Previously, our DIR bits were encoding the
VLAN direction (RX/TX) and were set to either 1 or 2. This meant that
tag_8021q reserved 2K VLANs, or 50% of the available range.
Change the DIR bits to a hardcoded value of 3 now, which makes tag_8021q
reserve only 1K VLANs, and a different range now (the last 1K). This is
done so that we leave the old format in place in case we need to return
to it.
In terms of code, the vid_is_dsa_8021q_rxvlan and vid_is_dsa_8021q_txvlan
functions go away. Any vid_is_dsa_8021q is both a TX and an RX VLAN, and
they are no longer distinct. For example, felix which did different
things for different VLAN types, now needs to handle the RX and the TX
logic for the same VLAN.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 25 Feb 2022 09:22:19 +0000 (11:22 +0200)]
net: dsa: felix: delete workarounds present due to SVL tag_8021q bridging
The felix driver, which also has a tagging protocol implementation based
on tag_8021q, does not care about adding the RX VLAN that is pvid on one
port on the other ports that are in the same bridge with it. It simply
doesn't need that, because in its implementation, the RX VLAN that is
pvid of a port is only used to install a TCAM rule that pushes that VLAN
ID towards the CPU port.
Now that tag_8021q no longer performs Shared VLAN Learning based
forwarding, the RX VLANs are actually segregated into two types:
standalone VLANs and VLAN-unaware bridging VLANs. Since you actually
have to call dsa_tag_8021q_bridge_join() to get a bridging VLAN from
tag_8021q, and felix does not do that because it doesn't need it, it
means that it only gets standalone port VLANs from tag_8021q. Which is
perfect because this means it can drop its workarounds that avoid the
VLANs it does not need.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 25 Feb 2022 09:22:18 +0000 (11:22 +0200)]
docs: net: dsa: sja1105: document limitations of tc-flower rule VLAN awareness
After change "net: dsa: tag_8021q: replace the SVL bridging with
VLAN-unaware IVL bridging", tag_8021q enforces two different pvids on a
port, depending on whether it is standalone or in a VLAN-unaware bridge.
Up until now, there was a single pvid, represented by
dsa_tag_8021q_rx_vid(), and that was used as the VLAN for VLAN-unaware
virtual link rules, regardless of whether the port was bridged or
standalone.
To keep VLAN-unaware virtual links working, we need to follow whether
the port is in a bridge or not, and update the VLAN ID from those rules.
In fact we can't fully do that. Depending on whether the switch is
VLAN-aware or not, we can accept Virtual Link rules with just the MAC
DA, or with a MAC DA and a VID. So we already deny changes to the VLAN
awareness of the switch. But the VLAN awareness may also change as a
result of joining or leaving a bridge.
One might say we could just allow the following: a port may leave a
VLAN-unaware bridge while it has VLAN-unaware VL (tc-flower) rules, and
the driver will update those with the new tag_8021q pvid for standalone
mode, but the driver won't accept joining a bridge at all while VL rules
were installed in standalone mode. This is sort of a compromise made
because leaving a bridge is an operation that cannot be vetoed.
But this sort of setup change is not fully supported, either: as
mentioned, VLAN filtering changes can also be triggered by leaving a
bridge, therefore, the existing veto we have in place for turning VLAN
filtering off with VLAN-aware VL rules active still isn't fully
effective.
I really don't know how to deal with this in a way that produces
predictable behavior for user space. Since at the moment, keeping this
feature fully functional on constellation changes (not changing the
tag_8021q port pvid when joining a bridge) is blocking progress for the
DSA FDB isolation, I'd rather document it as a (potentially temporary)
limitation and go on without it.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 25 Feb 2022 09:22:17 +0000 (11:22 +0200)]
net: dsa: tag_8021q: add support for imprecise RX based on the VBID
The sja1105 switch can't populate the PORT field of the tag_8021q header
when sending a frame to the CPU with a non-zero VBID.
Similar to dsa_find_designated_bridge_port_by_vid() which performs
imprecise RX for VLAN-aware bridges, let's introduce a helper in
tag_8021q for performing imprecise RX based on the VLAN that it has
allocated for a VLAN-unaware bridge.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Fri, 25 Feb 2022 09:22:16 +0000 (11:22 +0200)]
net: dsa: tag_8021q: replace the SVL bridging with VLAN-unaware IVL bridging
For VLAN-unaware bridging, tag_8021q uses something perhaps a bit too
tied with the sja1105 switch: each port uses the same pvid which is also
used for standalone operation (a unique one from which the source port
and device ID can be retrieved when packets from that port are forwarded
to the CPU). Since each port has a unique pvid when performing
autonomous forwarding, the switch must be configured for Shared VLAN
Learning (SVL) such that the VLAN ID itself is ignored when performing
FDB lookups. Without SVL, packets would always be flooded, since FDB
lookup in the source port's VLAN would never find any entry.
First of all, to make tag_8021q more palatable to switches which might
not support Shared VLAN Learning, let's just use a common VLAN for all
ports that are under the same bridge.
Secondly, using Shared VLAN Learning means that FDB isolation can never
be enforced. But if all ports under the same VLAN-unaware bridge share
the same VLAN ID, it can.
The disadvantage is that the CPU port can no longer perform precise
source port identification for these packets. But at least we have a
mechanism which has proven to be adequate for that situation: imprecise
RX (dsa_find_designated_bridge_port_by_vid), which is what we use for
termination on VLAN-aware bridges.
The VLAN ID that VLAN-unaware bridges will use with tag_8021q is the
same one as we were previously using for imprecise TX (bridge TX
forwarding offload). It is already allocated, it is just a matter of
using it.
Note that because now all ports under the same bridge share the same
VLAN, the complexity of performing a tag_8021q bridge join decreases
dramatically. We no longer have to install the RX VLAN of a newly
joining port into the port membership of the existing bridge ports.
The newly joining port just becomes a member of the VLAN corresponding
to that bridge, and the other ports are already members of it from when
they joined the bridge themselves. So forwarding works properly.
This means that we can unhook dsa_tag_8021q_bridge_{join,leave} from the
cross-chip notifier level dsa_switch_bridge_{join,leave}. We can put
these calls directly into the sja1105 driver.
With this new mode of operation, a port controlled by tag_8021q can have
two pvids whereas before it could only have one. The pvid for standalone
operation is different from the pvid used for VLAN-unaware bridging.
This is done, again, so that FDB isolation can be enforced.
Let tag_8021q manage this by deleting the standalone pvid when a port
joins a bridge, and restoring it when it leaves it.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 27 Feb 2022 10:51:24 +0000 (10:51 +0000)]
Merge branch 'FFungible-ethernet-driver'
Dimitris Michailidis says:
====================
new Fungible Ethernet driver
This patch series contains a new network driver for the Ethernet
functionality of Fungible cards.
It contains two modules. The first one in patch 2 is a library module
that implements some of the device setup, queue managenent, and support
for operating an admin queue. These are placed in a separate module
because the cards provide a number of PCI functions handled by different
types of drivers and all use the same common means to interact with the
device. Each of the drivers will be relying on this library module for
them.
The remaining patches provide the Ethernet driver for the cards.
v2:
- Fix set_pauseparam, remove get_wol, remove module param (Andrew Lunn)
- Fix a register poll loop (Andrew)
- Replace constants defined with 'static const'
- make W=1 C=1 is clean
- Remove devlink FW update (Jakub)
- Remove duplicate ethtool stats covered by structured API (Jakub)
v3:
- Make TLS stats unconditional (Andrew)
- Remove inline from .c (Andrew)
- Replace some ifdef with IS_ENABLED (Andrew)
- Fix build failure on 32b arches (build robot)
- Fix build issue with make O= (Jakub)
v4:
- Fix for newer bpf_warn_invalid_xdp_action() (Jakub)
- Remove 32b dma_set_mask_and_coherent()
v5:
- Make XDP enter/exit non-disruptive to active traffic
- Remove dormant port state
- Style fixes, unused stuff removal (Jakub)
v6:
- When changing queue depth or numbers allocate the new queues
before shutting down the existing ones (Jakub)
v7:
- Convert IRQ bookeeping to use XArray.
- Changes to the numbers of Tx/Rx queues are now incremental and
do not disrupt ongoing traffic.
- Implement .ndo_eth_ioctl instead of .ndo_do_ioctl.
- Replace deprecated irq_set_affinity_hint.
- Remove TLS 1.3 support (Jakub)
- Remove hwtstamp_config.flags check (Jakub)
- Add locking in SR-IOV enable/disable. (Jakub)
v8:
- Remove dropping of <33B packets and the associated counter (Jakub)
- Report CQE size.
- Show last MAC stats when the netdev isn't running (Andrew)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Dimitris Michailidis [Fri, 25 Feb 2022 02:59:02 +0000 (18:59 -0800)]
net/fungible: Kconfig, Makefiles, and MAINTAINERS
Hook up the new driver to configuration and build.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dimitris Michailidis [Fri, 25 Feb 2022 02:59:01 +0000 (18:59 -0800)]
net/funeth: add kTLS TX control part
This provides the control pieces for kTLS Tx offload, implementinng the
offload operations.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dimitris Michailidis [Fri, 25 Feb 2022 02:59:00 +0000 (18:59 -0800)]
net/funeth: add the data path
Add the driver's data path. Tx handles skbs, XDP, and kTLS, Rx has skbs
and XDP. Also included are Rx and Tx queue creation/tear-down and
tracing.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dimitris Michailidis [Fri, 25 Feb 2022 02:58:59 +0000 (18:58 -0800)]
net/funeth: devlink support
The devlink part, which is minimal at this time giving just the driver
name.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dimitris Michailidis [Fri, 25 Feb 2022 02:58:58 +0000 (18:58 -0800)]
net/funeth: ethtool operations
Add ethtool operations, primarily related to queues and ports, as well
as device statistics.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dimitris Michailidis [Fri, 25 Feb 2022 02:58:57 +0000 (18:58 -0800)]
net/funeth: probing and netdev ops
This is the first part of the Fungible ethernet driver. It deals with
device probing, net_device creation, and netdev ops.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dimitris Michailidis [Fri, 25 Feb 2022 02:58:56 +0000 (18:58 -0800)]
net/fungible: Add service module for Fungible drivers
Fungible cards have a number of different PCI functions and thus
different drivers, all of which use a common method to initialize and
interact with the device. This commit adds a library module that
collects these common mechanisms. They mainly deal with device
initialization, setting up and destroying queues, and operating an admin
queue. A subset of the FW interface is also included here.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dimitris Michailidis [Fri, 25 Feb 2022 02:58:55 +0000 (18:58 -0800)]
PCI: Add Fungible Vendor ID to pci_ids.h
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 26 Feb 2022 12:53:59 +0000 (12:53 +0000)]
Merge branch 'ip-neigh-skb-reason'
Menglong Dong says:
====================
net: use kfree_skb_reason() for ip/neighbour
In the series "net: use kfree_skb_reason() for ip/udp packet receive",
reasons for skb drops are added to the packet receive process of IP
layer. Link:
https://lore.kernel.org/netdev/
20220205074739.543606-1-imagedong@tencent.com/
And in the first patch of this series, skb drop reasons are added to
the packet egress path of IP layer. As kfree_skb() is not used frequent,
I commit these changes at once and didn't create a patch for every
functions that involed. Following functions are handled:
__ip_queue_xmit()
ip_finish_output()
ip_mc_finish_output()
ip6_output()
ip6_finish_output()
ip6_finish_output2()
Following new drop reasons are introduced (what they mean can be seen
in the document of them):
SKB_DROP_REASON_IP_OUTNOROUTES
SKB_DROP_REASON_BPF_CGROUP_EGRESS
SKB_DROP_REASON_IPV6DISABLED
SKB_DROP_REASON_NEIGH_CREATEFAIL
In the 2th and 3th patches, kfree_skb_reason() is used in neighbour
subsystem instead of kfree_skb(). __neigh_event_send() and
arp_error_report() are involed, and following new drop reasons are
introduced:
SKB_DROP_REASON_NEIGH_FAILED
SKB_DROP_REASON_NEIGH_QUEUEFULL
SKB_DROP_REASON_NEIGH_DEAD
Changes since v2:
- fix typo in the 1th patch of 'SKB_DROP_REASON_IPV6DSIABLED' reported
by Roman
Changes since v1:
- introduce SKB_DROP_REASON_NEIGH_CREATEFAIL for some path in the 1th
patch
- introduce SKB_DROP_REASON_NEIGH_DEAD in the 2th patch
- simplify the document for the new drop reasons, as David Ahern
suggested
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Menglong Dong [Sat, 26 Feb 2022 04:18:31 +0000 (12:18 +0800)]
net: neigh: add skb drop reasons to arp_error_report()
When neighbour become invalid or destroyed, neigh_invalidate() will be
called. neigh->ops->error_report() will be called if the neighbour's
state is NUD_FAILED, and seems here is the only use of error_report().
So we can tell that the reason of skb drops in arp_error_report() is
SKB_DROP_REASON_NEIGH_FAILED.
Replace kfree_skb() used in arp_error_report() with kfree_skb_reason().
Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Menglong Dong [Sat, 26 Feb 2022 04:18:30 +0000 (12:18 +0800)]
net: neigh: use kfree_skb_reason() for __neigh_event_send()
Replace kfree_skb() used in __neigh_event_send() with
kfree_skb_reason(). Following drop reasons are added:
SKB_DROP_REASON_NEIGH_FAILED
SKB_DROP_REASON_NEIGH_QUEUEFULL
SKB_DROP_REASON_NEIGH_DEAD
The first two reasons above should be the hot path that skb drops
in neighbour subsystem.
Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Menglong Dong [Sat, 26 Feb 2022 04:18:29 +0000 (12:18 +0800)]
net: ip: add skb drop reasons for ip egress path
Replace kfree_skb() which is used in the packet egress path of IP layer
with kfree_skb_reason(). Functions that are involved include:
__ip_queue_xmit()
ip_finish_output()
ip_mc_finish_output()
ip6_output()
ip6_finish_output()
ip6_finish_output2()
Following new drop reasons are introduced:
SKB_DROP_REASON_IP_OUTNOROUTES
SKB_DROP_REASON_BPF_CGROUP_EGRESS
SKB_DROP_REASON_IPV6DISABLED
SKB_DROP_REASON_NEIGH_CREATEFAIL
Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 26 Feb 2022 12:44:29 +0000 (12:44 +0000)]
Merge branch 'dsa-ocelot-phylink-updates'
Russell King says:
====================
net: dsa: ocelot: phylink updates
This series updates the Ocelot DSA driver for some of the recent
phylink changes. Specifically, we fill in the supported_interfaces
fields, convert to mac_select_pcs and mark the driver as non-legacy.
We do not convert to phylink_generic_validate() as Ocelot has
special support for its rate adapting PCS which makes the generic
validate method unsuitable for this driver.
The three changes mentioned above are implemented in their own
separate patches with one additional cleanup:
1) Populate the supported_interfaces bitmap
2) Remove the now unnecessary interface checks in the validate methods
3) Convert from phylink_set_pcs() to .mac_select_pcs.
4) Mark the driver as non-legacy
Thanks.
RFC -> non-RFC: add reviewed-by/tested-by's, update patch 1 to set the
supported_interfaces bitmap in felix.c rather than the sub-drivers as
requested by Vladimir.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King (Oracle) [Fri, 25 Feb 2022 16:19:41 +0000 (16:19 +0000)]
net: dsa: ocelot: mark as non-legacy
The ocelot DSA driver does not make use of the speed, duplex, pause or
advertisement in its phylink_mac_config() implementation, so it can be
marked as a non-legacy driver.
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King (Oracle) [Fri, 25 Feb 2022 16:19:36 +0000 (16:19 +0000)]
net: dsa: ocelot: convert to mac_select_pcs()
Convert the PCS selection to use mac_select_pcs, which allows the PCS
to perform any validation it needs, and removes the need to set the PCS
in the mac_config() callback, delving into the higher DSA levels to do
so.
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King (Oracle) [Fri, 25 Feb 2022 16:19:30 +0000 (16:19 +0000)]
net: dsa: ocelot: remove interface checks
When the supported interfaces bitmap is populated, phylink will itself
check that the interface mode is present in this bitmap. Drivers no
longer need to perform this check themselves. Remove these checks.
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King (Oracle) [Fri, 25 Feb 2022 16:19:25 +0000 (16:19 +0000)]
net: dsa: ocelot: populate supported_interfaces
Populate the supported interfaces bitmap for the Ocelot DSA switches.
Since all sub-drivers only support a single interface mode, defined by
ocelot_port->phy_mode, we can handle this in the main driver code
without reference to the sub-driver.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Sat, 26 Feb 2022 06:23:36 +0000 (22:23 -0800)]
Merge branch 'small-fixes-for-mctp'
Matt Johnston says:
====================
Small fixes for MCTP
This series has 3 fixes for MCTP.
====================
Link: https://lore.kernel.org/r/20220225053938.643605-1-matt@codeconstruct.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Matt Johnston [Fri, 25 Feb 2022 05:39:38 +0000 (13:39 +0800)]
mctp i2c: Fix hard head TX bounds length check
We should be testing the length before fitting into the u8 byte_count.
This is just a sanity check, the MCTP stack should have limited to MTU
which is checked, and we check consistency later in mctp_i2c_xmit().
Found by Smatch
mctp_i2c_header_create() warn: impossible condition
'(hdr->byte_count > 255) => (0-255 > 255)'
Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Matt Johnston [Fri, 25 Feb 2022 05:39:37 +0000 (13:39 +0800)]
mctp i2c: Fix potential use-after-free
The skb is handed off to netif_rx() which may free it.
Found by Smatch.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Matt Johnston [Fri, 25 Feb 2022 05:39:36 +0000 (13:39 +0800)]
mctp: Avoid warning if unregister notifies twice
Previously if an unregister notify handler ran twice (waiting for
netdev to be released) it would print a warning in mctp_unregister()
every subsequent time the unregister notify occured.
Instead we only need to worry about the case where a mctp_ptr is
set on an unknown device type.
Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Wong Vee Khee [Fri, 25 Feb 2022 02:33:25 +0000 (10:33 +0800)]
stmmac: intel: Enable 2.5Gbps for Intel AlderLake-S
Intel AlderLake-S platform is capable of running on 2.5GBps link speed.
This patch enables 2.5Gbps link speed on AlderLake-S platform.
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Link: https://lore.kernel.org/r/20220225023325.474242-1-vee.khee.wong@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Colin Ian King [Thu, 24 Feb 2022 22:05:57 +0000 (22:05 +0000)]
net: dsa: qca8k: return with -EINVAL on invalid port
Currently an invalid port throws a WARN_ON warning however invalid
uninitialized values in reg and cpu_port_index are being used later
on. Fix this by returning -EINVAL for an invalid port value.
Addresses clang-scan warnings:
drivers/net/dsa/qca8k.c:1981:3: warning: 2nd function call argument is an
uninitialized value [core.CallAndMessage]
drivers/net/dsa/qca8k.c:1999:9: warning: 2nd function call argument is an
uninitialized value [core.CallAndMessage]
Fixes:
7544b3ff745b ("net: dsa: qca8k: move pcs configuration")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220224220557.147075-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
David S. Miller [Fri, 25 Feb 2022 12:47:20 +0000 (12:47 +0000)]
Merge branch 'sja1105-phylink-updates'
Russell King says:
====================
net: dsa: sja1105: phylink updates
This series updates the phylink implementation in sja1105 to use the
supported_interfaces bitmap, convert to the mac_select_pcs() interface,
mark as non-legacy, and get rid of the validation method.
As a final step, enable switching between SGMII and 2500BASE-X as it
is a feature that Vladimir desires.
Specifically, the patches in this series:
1. Populates the supported_interfaces bitmap.
2. As a result of the supported_interfaces bitmap being populated,
sja1105 no longer needs to check the interface mode as phylink
will do this.
3. Switch away from using phylink_set_pcs(), using the mac_select_pcs()
method instead.
4. Mark the driver as not-legacy
5. Fill in mac_capabilities using _exactly_ the same conditions as is
currently used to decide which link modes to support, and convert
to use phylink_generic_validate()
6. Add brand new support to permit switching between SGMII and
2500BASE-X modes of operation as per Vladimir's single patch that
performs steps 1, 2, 5 and 6 in one go.
There are some additional changes in Vladimir's single patch that I
have not included:
* validation of priv->phy_mode[] in sja1105_phylink_get_caps(). The
driver has already validated the phy_mode for each port in
sja1105_init_mii_settings(), and a failure here will prevent the
driver reaching sja1105_phylink_get_caps().
* Changing the decisions on which mac_capabilities to set. Vladimir's
patch always sets MAC_10FD | MAC_100FD | MAC_1000FD despite the
current code clearly making the 1G speed conditional on the
xmii_mode for the port. The change in decision making may be
visible when in PHY_INTERFACE_MODE_INTERNAL mode, for which
the phylink_generic_validate() will pass through all the MAC
capabilities as ethtool link modes.
Hence, if we have PHY_INTERFACE_MODE_INTERNAL but supports_rgmii[]
or supports_sgmii[] is non-zero, currently we do not get 1G speeds.
With Vladimir's additional change, we will get 1G speeds.
While it is not clear whether that can happen, I feel changing the
decision making should be a separate patch.
* The decision for MAC_2500FD is made differently -
sja1105_init_mii_settings() allows PHY_INTERFACE_MODE_2500BASEX
when supports_2500basex[] is non-zero, and is not based on any other
condition such as supports_sgmii[] or supports_rgmii[]. Vladimir's
patch makes it additionally conditional on those supports_.gmii[]
settings, which is a functional change that should be made in a
separate patch - and if desired, then sja1105_init_mii_settings()
should also be updated at the same time.
Consequently, I believe that my previous objections to Vladimir's
single patch approach are well founded and justified, even through
Vladimir is the maintainer of this driver. I have no objection to
the additional changes, I just don't think they should all be wrapped
up into a single patch that converts the way validation is done _and_
also makes a bunch of other functional changes.
RFC->non-RFC: added Vladimir's Reviewed-by's, fixed the typo in the
commit message of patch 6, and removed the phrase at the end of a
comment as requested.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King (Oracle) [Fri, 25 Feb 2022 11:56:28 +0000 (11:56 +0000)]
net: dsa: sja1105: support switching between SGMII and 2500BASE-X
Vladimir Oltean suggests that sja1105 can support switching between
SGMII and 2500BASE-X modes. Augment sja1105_phylink_get_caps() to
fill in both interface modes if they can be supported.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King (Oracle) [Fri, 25 Feb 2022 11:56:23 +0000 (11:56 +0000)]
net: dsa: sja1105: convert to phylink_generic_validate()
Populate the MAC capabilities for the SJA1105 DSA switch using the same
decision making which sja1105_phylink_validate() uses. Remove the now
obsolete sja1105_phylink_validate() implementation to allow DSA to use
phylink_generic_validate() for this switch driver.
As noted by Vladimir, this fixes an inconsequential bug which allowed
gigabit and lower interface modes to be indicated when operating in
2500base-X mode.
Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King (Oracle) [Fri, 25 Feb 2022 11:56:17 +0000 (11:56 +0000)]
net: dsa: sja1105: mark as non-legacy
The sja1105 DSA driver does not have a phylink_mac_config() method
implementation, it is safe to mark this as a non-legacy driver.
Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King (Oracle) [Fri, 25 Feb 2022 11:56:12 +0000 (11:56 +0000)]
net: dsa: sja1105: use .mac_select_pcs() interface
Convert the PCS selection to use mac_select_pcs, which allows the PCS
to perform any validation it needs, and removes the need to set the PCS
in the mac_config() callback, delving into the higher DSA levels to do
so.
Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King (Oracle) [Fri, 25 Feb 2022 11:56:07 +0000 (11:56 +0000)]
net: dsa: sja1105: remove interface checks
When the supported interfaces bitmap is populated, phylink will itself
check that the interface mode is present in this bitmap. Drivers no
longer need to perform this check themselves. Remove these checks.
Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King (Oracle) [Fri, 25 Feb 2022 11:56:02 +0000 (11:56 +0000)]
net: dsa: sja1105: populate supported_interfaces
Populate the supported interfaces bitmap for the SJA1105 DSA switch.
This switch only supports a static model of configuration, so we
restrict the interface modes to the configured setting.
Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Vladimir Oltean <vladimir. │
Signed-off-by: David S. Miller <davem@davemloft.net>
Toms Atteka [Thu, 24 Feb 2022 00:54:09 +0000 (16:54 -0800)]
net: openvswitch: IPv6: Add IPv6 extension header support
This change adds a new OpenFlow field OFPXMT_OFB_IPV6_EXTHDR and
packets can be filtered using ipv6_ext flag.
Signed-off-by: Toms Atteka <cpp.code.lv@gmail.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Fri, 25 Feb 2022 05:51:10 +0000 (21:51 -0800)]
Merge branch 'nfp-flow-independent-tc-action-hardware-offload'
Simon Horman says:
====================
nfp: flow-independent tc action hardware offload
Baowen Zheng says:
Allow nfp NIC to offload tc actions independent of flows.
The motivation for this work is to offload tc actions independent of flows
for nfp NIC. We allow nfp driver to provide hardware offload of OVS
metering feature - which calls for policers that may be used by multiple
flows and whose lifecycle is independent of any flows that use them.
When nfp driver tries to offload a flow table using the independent action,
the driver will search if the action is already offloaded to the hardware.
If not, the flow table offload will fail.
When the nfp NIC successes to offload an action, the user can check
in_hw_count when dumping the tc action.
Tc cli command to offload and dump an action:
# tc actions add action police rate 100mbit burst 10000k index 200 skip_sw
# tc -s -d actions list action police
total acts 1
action order 0: police 0xc8 rate 100Mbit burst 10000Kb mtu 2Kb action reclassify
overhead 0b linklayer ethernet
ref 1 bind 0 installed 142 sec used 0 sec
Action statistics:
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
skip_sw in_hw in_hw_count 1
used_hw_stats delayed
====================
Link: https://lore.kernel.org/r/20220223162302.97609-1-simon.horman@corigine.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Baowen Zheng [Wed, 23 Feb 2022 16:23:02 +0000 (17:23 +0100)]
nfp: add NFP_FL_FEATS_QOS_METER to host features to enable meter offload
Add NFP_FL_FEATS_QOS_METER to host features to enable meter
offload in driver.
Before adding this feature, we will not offload any police action
since we will check the host features before offloading any police
action.
Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Baowen Zheng [Wed, 23 Feb 2022 16:23:01 +0000 (17:23 +0100)]
nfp: add support to offload police action from flower table
Offload flow table if the action is already offloaded to hardware when
flow table uses this action.
Change meter id to type of u32 to support all the action index.
Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Baowen Zheng [Wed, 23 Feb 2022 16:23:00 +0000 (17:23 +0100)]
nfp: add process to get action stats from hardware
Add a process to update action stats from hardware.
This stats data will be updated to tc action when dumping actions
or filters.
Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Baowen Zheng [Wed, 23 Feb 2022 16:22:59 +0000 (17:22 +0100)]
nfp: add hash table to store meter table
Add a hash table to store meter table.
This meter table will also be used by flower action.
Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Baowen Zheng [Wed, 23 Feb 2022 16:22:58 +0000 (17:22 +0100)]
nfp: add support to offload tc action to hardware
Add process to offload tc action to hardware.
Currently we only support to offload police action.
Add meter capability to check if firmware supports
meter offload.
Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Baowen Zheng [Wed, 23 Feb 2022 16:22:57 +0000 (17:22 +0100)]
nfp: refactor policer config to support ingress/egress meter
Add an policer API to support ingress/egress meter.
Change ingress police to compatible with the new API.
Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Dmitry Safonov [Wed, 23 Feb 2022 17:57:40 +0000 (17:57 +0000)]
net/tcp: Merge TCP-MD5 inbound callbacks
The functions do essentially the same work to verify TCP-MD5 sign.
Code can be merged into one family-independent function in order to
reduce copy'n'paste and generated code.
Later with TCP-AO option added, this will allow to create one function
that's responsible for segment verification, that will have all the
different checks for MD5/AO/non-signed packets, which in turn will help
to see checks for all corner-cases in one function, rather than spread
around different families and functions.
Cc: Eric Dumazet <edumazet@google.com>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20220223175740.452397-1-dima@arista.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Fri, 25 Feb 2022 05:31:46 +0000 (21:31 -0800)]
Merge branch 'fdb-entries-on-dsa-lag-interfaces'
Vladimir Oltean says:
====================
FDB entries on DSA LAG interfaces
This work permits having static and local FDB entries on LAG interfaces
that are offloaded by DSA ports. New API needs to be introduced in
drivers. To maintain consistency with the bridging offload code, I've
taken the liberty to reorganize the data structures added by Tobias in
the DSA core a little bit.
Tested on NXP LS1028A (felix switch). Would appreciate feedback/testing
on other platforms too. Testing procedure was the one described here:
https://patchwork.kernel.org/project/netdevbpf/cover/
20210205130240.4072854-1-vladimir.oltean@nxp.com/
with this script:
ip link del bond0
ip link add bond0 type bond mode 802.3ad
ip link set swp1 down && ip link set swp1 master bond0 && ip link set swp1 up
ip link set swp2 down && ip link set swp2 master bond0 && ip link set swp2 up
ip link del br0
ip link add br0 type bridge && ip link set br0 up
ip link set br0 arp off
ip link set bond0 master br0 && ip link set bond0 up
ip link set swp0 master br0 && ip link set swp0 up
ip link set dev bond0 type bridge_slave flood off learning off
bridge fdb add dev bond0 <mac address of other eno0> master static
I'm noticing a problem in 'bridge fdb dump' with the 'self' entries, and
I didn't solve this. On Ocelot, an entry learned on a LAG is reported as
being on the first member port of it (so instead of saying 'self bond0',
it says 'self swp1'). This is better than not seeing the entry at all,
but when DSA queries for the FDBs on a port via ds->ops->port_fdb_dump,
it never queries for FDBs on a LAG. Not clear what we should do there,
we aren't in control of the ->ndo_fdb_dump of the bonding/team drivers.
Alternatively, we could just consider the 'self' entries reported via
ndo_fdb_dump as "better than nothing", and concentrate on the 'master'
entries that are in sync with the bridge when packets are flooded to
software.
====================
Link: https://lore.kernel.org/r/20220223140054.3379617-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:54 +0000 (16:00 +0200)]
net: dsa: felix: support FDB entries on offloaded LAG interfaces
This adds the logic in the Felix DSA driver and Ocelot switch library.
For Ocelot switches, the DEST_IDX that is the output of the MAC table
lookup is a logical port (equal to physical port, if no LAG is used, or
a dynamically allocated number otherwise). The allocation we have in
place for LAG IDs is different from DSA's, so we can't use that:
- DSA allocates a continuous range of LAG IDs starting from 1
- Ocelot appears to require that physical ports and LAG IDs are in the
same space of [0, num_phys_ports), and additionally, ports that aren't
in a LAG must have physical port id == logical port id
The implication is that an FDB entry towards a LAG might need to be
deleted and reinstalled when the LAG ID changes.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:53 +0000 (16:00 +0200)]
net: dsa: support FDB events on offloaded LAG interfaces
This change introduces support for installing static FDB entries towards
a bridge port that is a LAG of multiple DSA switch ports, as well as
support for filtering towards the CPU local FDB entries emitted for LAG
interfaces that are bridge ports.
Conceptually, host addresses on LAG ports are identical to what we do
for plain bridge ports. Whereas FDB entries _towards_ a LAG can't simply
be replicated towards all member ports like we do for multicast, or VLAN.
Instead we need new driver API. Hardware usually considers a LAG to be a
"logical port", and sets the entire LAG as the forwarding destination.
The physical egress port selection within the LAG is made by hashing
policy, as usual.
To represent the logical port corresponding to the LAG, we pass by value
a copy of the dsa_lag structure to all switches in the tree that have at
least one port in that LAG.
To illustrate why a refcounted list of FDB entries is needed in struct
dsa_lag, it is enough to say that:
- a LAG may be a bridge port and may therefore receive FDB events even
while it isn't yet offloaded by any DSA interface
- DSA interfaces may be removed from a LAG while that is a bridge port;
we don't want FDB entries lingering around, but we don't want to
remove entries that are still in use, either
For all the cases below to work, the idea is to always keep an FDB entry
on a LAG with a reference count equal to the DSA member ports. So:
- if a port joins a LAG, it requests the bridge to replay the FDB, and
the FDB entries get created, or their refcount gets bumped by one
- if a port leaves a LAG, the FDB replay deletes or decrements refcount
by one
- if an FDB is installed towards a LAG with ports already present, that
entry is created (if it doesn't exist) and its refcount is bumped by
the amount of ports already present in the LAG
echo "Adding FDB entry to bond with existing ports"
ip link del bond0
ip link add bond0 type bond mode 802.3ad
ip link set swp1 down && ip link set swp1 master bond0 && ip link set swp1 up
ip link set swp2 down && ip link set swp2 master bond0 && ip link set swp2 up
ip link del br0
ip link add br0 type bridge
ip link set bond0 master br0
bridge fdb add dev bond0 00:01:02:03:04:05 master static
ip link del br0
ip link del bond0
echo "Adding FDB entry to empty bond"
ip link del bond0
ip link add bond0 type bond mode 802.3ad
ip link del br0
ip link add br0 type bridge
ip link set bond0 master br0
bridge fdb add dev bond0 00:01:02:03:04:05 master static
ip link set swp1 down && ip link set swp1 master bond0 && ip link set swp1 up
ip link set swp2 down && ip link set swp2 master bond0 && ip link set swp2 up
ip link del br0
ip link del bond0
echo "Adding FDB entry to empty bond, then removing ports one by one"
ip link del bond0
ip link add bond0 type bond mode 802.3ad
ip link del br0
ip link add br0 type bridge
ip link set bond0 master br0
bridge fdb add dev bond0 00:01:02:03:04:05 master static
ip link set swp1 down && ip link set swp1 master bond0 && ip link set swp1 up
ip link set swp2 down && ip link set swp2 master bond0 && ip link set swp2 up
ip link set swp1 nomaster
ip link set swp2 nomaster
ip link del br0
ip link del bond0
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:52 +0000 (16:00 +0200)]
net: dsa: call SWITCHDEV_FDB_OFFLOADED for the orig_dev
When switchdev_handle_fdb_event_to_device() replicates a FDB event
emitted for the bridge or for a LAG port and DSA offloads that, we
should notify back to switchdev that the FDB entry on the original
device is what was offloaded, not on the DSA slave devices that the
event is replicated on.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:51 +0000 (16:00 +0200)]
net: dsa: remove "ds" and "port" from struct dsa_switchdev_event_work
By construction, the struct net_device *dev passed to
dsa_slave_switchdev_event_work() via struct dsa_switchdev_event_work
is always a DSA slave device.
Therefore, it is redundant to pass struct dsa_switch and int port
information in the deferred work structure. This can be retrieved at all
times from the provided struct net_device via dsa_slave_to_port().
For the same reason, we can drop the dsa_is_user_port() check in
dsa_fdb_offload_notify().
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:50 +0000 (16:00 +0200)]
net: switchdev: remove lag_mod_cb from switchdev_handle_fdb_event_to_device
When the switchdev_handle_fdb_event_to_device() event replication helper
was created, my original thought was that FDB events on LAG interfaces
should most likely be special-cased, not just replicated towards all
switchdev ports beneath that LAG. So this replication helper currently
does not recurse through switchdev lower interfaces of LAG bridge ports,
but rather calls the lag_mod_cb() if that was provided.
No switchdev driver uses this helper for FDB events on LAG interfaces
yet, so that was an assumption which was yet to be tested. It is
certainly usable for that purpose, as my RFC series shows:
https://patchwork.kernel.org/project/netdevbpf/cover/
20220210125201.2859463-1-vladimir.oltean@nxp.com/
however this approach is slightly convoluted because:
- the switchdev driver gets a "dev" that isn't its own net device, but
rather the LAG net device. It must call switchdev_lower_dev_find(dev)
in order to get a handle of any of its own net devices (the ones that
pass check_cb).
- in order for FDB entries on LAG ports to be correctly refcounted per
the number of switchdev ports beneath that LAG, we haven't escaped the
need to iterate through the LAG's lower interfaces. Except that is now
the responsibility of the switchdev driver, because the replication
helper just stopped half-way.
So, even though yes, FDB events on LAG bridge ports must be
special-cased, in the end it's simpler to let switchdev_handle_fdb_*
just iterate through the LAG port's switchdev lowers, and let the
switchdev driver figure out that those physical ports are under a LAG.
The switchdev_handle_fdb_event_to_device() helper takes a
"foreign_dev_check" callback so it can figure out whether @dev can
autonomously forward to @foreign_dev. DSA fills this method properly:
if the LAG is offloaded by another port in the same tree as @dev, then
it isn't foreign. If it is a software LAG, it is foreign - forwarding
happens in software.
Whether an interface is foreign or not decides whether the replication
helper will go through the LAG's switchdev lowers or not. Since the
lan966x doesn't properly fill this out, FDB events on software LAG
uppers will get called. By changing lan966x_foreign_dev_check(), we can
suppress them.
Whereas DSA will now start receiving FDB events for its offloaded LAG
uppers, so we need to return -EOPNOTSUPP, since we currently don't do
the right thing for them.
Cc: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:49 +0000 (16:00 +0200)]
net: dsa: create a dsa_lag structure
The main purpose of this change is to create a data structure for a LAG
as seen by DSA. This is similar to what we have for bridging - we pass a
copy of this structure by value to ->port_lag_join and ->port_lag_leave.
For now we keep the lag_dev, id and a reference count in it. Future
patches will add a list of FDB entries for the LAG (these also need to
be refcounted to work properly).
The LAG structure is created using dsa_port_lag_create() and destroyed
using dsa_port_lag_destroy(), just like we have for bridging.
Because now, the dsa_lag itself is refcounted, we can simplify
dsa_lag_map() and dsa_lag_unmap(). These functions need to keep a LAG in
the dst->lags array only as long as at least one port uses it. The
refcounting logic inside those functions can be removed now - they are
called only when we should perform the operation.
dsa_lag_dev() is renamed to dsa_lag_by_id() and now returns the dsa_lag
structure instead of the lag_dev net_device.
dsa_lag_foreach_port() now takes the dsa_lag structure as argument.
dst->lags holds an array of dsa_lag structures.
dsa_lag_map() now also saves the dsa_lag->id value, so that linear
walking of dst->lags in drivers using dsa_lag_id() is no longer
necessary. They can just look at lag.id.
dsa_port_lag_id_get() is a helper, similar to dsa_port_bridge_num_get(),
which can be used by drivers to get the LAG ID assigned by DSA to a
given port.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:48 +0000 (16:00 +0200)]
net: dsa: mv88e6xxx: use dsa_switch_for_each_port in mv88e6xxx_lag_sync_masks
Make the intent of the code more clear by using the dedicated helper for
iterating over the ports of a switch.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:47 +0000 (16:00 +0200)]
net: dsa: make LAG IDs one-based
The DSA LAG API will be changed to become more similar with the bridge
data structures, where struct dsa_bridge holds an unsigned int num,
which is generated by DSA and is one-based. We have a similar thing
going with the DSA LAG, except that isn't stored anywhere, it is
calculated dynamically by dsa_lag_id() by iterating through dst->lags.
The idea of encoding an invalid (or not requested) LAG ID as zero for
the purpose of simplifying checks in drivers means that the LAG IDs
passed by DSA to drivers need to be one-based too. So back-and-forth
conversion is needed when indexing the dst->lags array, as well as in
drivers which assume a zero-based index.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:46 +0000 (16:00 +0200)]
net: dsa: qca8k: rename references to "lag" as "lag_dev"
In preparation of converting struct net_device *dp->lag_dev into a
struct dsa_lag *dp->lag, we need to rename, for consistency purposes,
all occurrences of the "lag" variable in qca8k to "lag_dev".
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:45 +0000 (16:00 +0200)]
net: dsa: mv88e6xxx: rename references to "lag" as "lag_dev"
In preparation of converting struct net_device *dp->lag_dev into a
struct dsa_lag *dp->lag, we need to rename, for consistency purposes,
all occurrences of the "lag" variable in mv88e6xxx to "lag_dev".
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 23 Feb 2022 14:00:44 +0000 (16:00 +0200)]
net: dsa: rename references to "lag" as "lag_dev"
In preparation of converting struct net_device *dp->lag_dev into a
struct dsa_lag *dp->lag, we need to rename, for consistency purposes,
all occurrences of the "lag" variable in the DSA core to "lag_dev".
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Oleksij Rempel [Wed, 23 Feb 2022 11:06:33 +0000 (12:06 +0100)]
net: asix: remove code duplicates in asix_mdio_read/write and asix_mdio_read/write_nopm
This functions are mostly same except of one hard coded "in_pm" variable.
So, rework them to reduce maintenance overhead.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20220223110633.3006551-1-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Yang Yingliang [Wed, 23 Feb 2022 08:49:54 +0000 (16:49 +0800)]
net: marvell: prestera: Fix return value check in prestera_kern_fib_cache_find()
rhashtable_lookup_fast() returns NULL pointer not ERR_PTR(), so
it can return fib_node directly in prestera_kern_fib_cache_find().
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220223084954.1771075-2-yangyingliang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Yang Yingliang [Wed, 23 Feb 2022 08:49:53 +0000 (16:49 +0800)]
net: marvell: prestera: Fix return value check in prestera_fib_node_find()
rhashtable_lookup_fast() returns NULL pointer not ERR_PTR(), so
it can return fib_node directly in prestera_fib_node_find().
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220223084954.1771075-1-yangyingliang@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Casper Andersson [Wed, 23 Feb 2022 08:27:00 +0000 (09:27 +0100)]
net: sparx5: Support offloading of bridge port flooding flags
Though the SparX-5i can control IPv4/6 multicasts separately from non-IP
multicasts, these are all muxed onto the bridge's BR_MCAST_FLOOD flag.
Signed-off-by: Casper Andersson <casper.casan@gmail.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Link: https://lore.kernel.org/r/20220223082700.qrot7lepwqcdnyzw@wse-c0155
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Fri, 25 Feb 2022 01:54:25 +0000 (17:54 -0800)]
Merge git://git./linux/kernel/git/netdev/net
tools/testing/selftests/net/mptcp/mptcp_join.sh
34aa6e3bccd8 ("selftests: mptcp: add ip mptcp wrappers")
857898eb4b28 ("selftests: mptcp: add missing join check")
6ef84b1517e0 ("selftests: mptcp: more robust signal race test")
https://lore.kernel.org/all/
20220221131842.468893-1-broonie@kernel.org/
drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.h
drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/ct.c
fb7e76ea3f3b6 ("net/mlx5e: TC, Skip redundant ct clear actions")
c63741b426e11 ("net/mlx5e: Fix MPLSoUDP encap to use MPLS action information")
09bf97923224f ("net/mlx5e: TC, Move pedit_headers_action to parse_attr")
84ba8062e383 ("net/mlx5e: Test CT and SAMPLE on flow attr")
efe6f961cd2e ("net/mlx5e: CT, Don't set flow flag CT for ct clear flow")
3b49a7edec1d ("net/mlx5e: TC, Reject rules with multiple CT actions")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linus Torvalds [Thu, 24 Feb 2022 21:19:57 +0000 (13:19 -0800)]
Merge tag 'pci-v5.17-fixes-5' of git://git./linux/kernel/git/helgaas/pci
Pull pci fixes from Bjorn Helgaas:
- Fix a merge error that broke PCI device enumeration on mvebu
platforms, including Turris Omnia (Armada 385) (Pali Rohár)
- Avoid using ATS on all AMD Navi10 and Navi14 GPUs because some
VBIOSes don't account for "harvested" (disabled) parts of the chip
when initializing caches (Alex Deucher)
* tag 'pci-v5.17-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Mark all AMD Navi10 and Navi14 GPU ATS as broken
PCI: mvebu: Fix device enumeration regression
Linus Torvalds [Thu, 24 Feb 2022 20:45:32 +0000 (12:45 -0800)]
Merge tag 'net-5.17-rc6' of git://git./linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from bpf and netfilter.
Current release - regressions:
- bpf: fix crash due to out of bounds access into reg2btf_ids
- mvpp2: always set port pcs ops, avoid null-deref
- eth: marvell: fix driver load from initrd
- eth: intel: revert "Fix reset bw limit when DCB enabled with 1 TC"
Current release - new code bugs:
- mptcp: fix race in overlapping signal events
Previous releases - regressions:
- xen-netback: revert hotplug-status changes causing devices to not
be configured
- dsa:
- avoid call to __dev_set_promiscuity() while rtnl_mutex isn't
held
- fix panic when removing unoffloaded port from bridge
- dsa: microchip: fix bridging with more than two member ports
Previous releases - always broken:
- bpf:
- fix crash due to incorrect copy_map_value when both spin lock
and timer are present in a single value
- fix a bpf_timer initialization issue with clang
- do not try bpf_msg_push_data with len 0
- add schedule points in batch ops
- nf_tables:
- unregister flowtable hooks on netns exit
- correct flow offload action array size
- fix a couple of memory leaks
- vsock: don't check owner in vhost_vsock_stop() while releasing
- gso: do not skip outer ip header in case of ipip and net_failover
- smc: use a mutex for locking "struct smc_pnettable"
- openvswitch: fix setting ipv6 fields causing hw csum failure
- mptcp: fix race in incoming ADD_ADDR option processing
- sysfs: add check for netdevice being present to speed_show
- sched: act_ct: fix flow table lookup after ct clear or switching
zones
- eth: intel: fixes for SR-IOV forwarding offloads
- eth: broadcom: fixes for selftests and error recovery
- eth: mellanox: flow steering and SR-IOV forwarding fixes
Misc:
- make __pskb_pull_tail() & pskb_carve_frag_list() drop_monitor
friends not report freed skbs as drops
- force inlining of checksum functions in net/checksum.h"
* tag 'net-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (85 commits)
net: mv643xx_eth: process retval from of_get_mac_address
ping: remove pr_err from ping_lookup
Revert "i40e: Fix reset bw limit when DCB enabled with 1 TC"
openvswitch: Fix setting ipv6 fields causing hw csum failure
ipv6: prevent a possible race condition with lifetimes
net/smc: Use a mutex for locking "struct smc_pnettable"
bnx2x: fix driver load from initrd
Revert "xen-netback: Check for hotplug-status existence before watching"
Revert "xen-netback: remove 'hotplug-status' once it has served its purpose"
net/mlx5e: Fix VF min/max rate parameters interchange mistake
net/mlx5e: Add missing increment of count
net/mlx5e: MPLSoUDP decap, fix check for unsupported matches
net/mlx5e: Fix MPLSoUDP encap to use MPLS action information
net/mlx5e: Add feature check for set fec counters
net/mlx5e: TC, Skip redundant ct clear actions
net/mlx5e: TC, Reject rules with forward and drop actions
net/mlx5e: TC, Reject rules with drop and modify hdr action
net/mlx5e: kTLS, Use CHECKSUM_UNNECESSARY for device-offloaded packets
net/mlx5e: Fix wrong return value on ioctl EEPROM query failure
net/mlx5: Fix possible deadlock on rule deletion
...
Jakub Kicinski [Thu, 24 Feb 2022 19:48:03 +0000 (11:48 -0800)]
Merge branch '10GbE' of git://git./linux/kernel/git/tnguy/next-queue
Nguyen, Anthony L says:
====================
10GbE Intel Wired LAN Driver Updates 2022-02-23
Yang Li fixes incorrect indenting as reported by smatch for ixgbevf.
Piotr removes non-inclusive language from ixgbe driver.
* '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
ixgbe: Remove non-inclusive language
ixgbevf: clean up some inconsistent indenting
====================
Link: https://lore.kernel.org/r/20220223185424.2129067-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linus Torvalds [Thu, 24 Feb 2022 19:15:10 +0000 (11:15 -0800)]
Merge tag 'block-5.17-2022-02-24' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request:
- send H2CData PDUs based on MAXH2CDATA (Varun Prakash)
- fix passthrough to namespaces with unsupported features (Christoph
Hellwig)
- Clear iocb->private at poll completion (Stefano)
* tag 'block-5.17-2022-02-24' of git://git.kernel.dk/linux-block:
nvme-tcp: send H2CData PDUs based on MAXH2CDATA
nvme: also mark passthrough-only namespaces ready in nvme_update_ns_info
nvme: don't return an error from nvme_configure_metadata
block: clear iocb->private in blkdev_bio_end_io_async()
Linus Torvalds [Thu, 24 Feb 2022 19:08:15 +0000 (11:08 -0800)]
Merge tag 'io_uring-5.17-2022-02-23' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
- Add a conditional schedule point in io_add_buffers() (Eric)
- Fix for a quiesce speedup merged in this release (Dylan)
- Don't convert to jiffies for event timeout waiting, it's way too
coarse when we accept a timespec as input (me)
* tag 'io_uring-5.17-2022-02-23' of git://git.kernel.dk/linux-block:
io_uring: disallow modification of rsrc_data during quiesce
io_uring: don't convert to jiffies for waiting on timeouts
io_uring: add a schedule point in io_add_buffers()
Linus Torvalds [Thu, 24 Feb 2022 18:42:20 +0000 (10:42 -0800)]
Merge tag 'platform-drivers-x86-v5.17-4' of git://git./linux/kernel/git/pdx86/platform-drivers-x86
Pull more x86 platform driver fixes from Hans de Goede:
"Two more fixes:
- Fix suspend/resume regression on AMD Cezanne APUs in >= 5.16
- Fix Microsoft Surface 3 battery readings"
* tag 'platform-drivers-x86-v5.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
surface: surface3_power: Fix battery readings on batteries without a serial number
platform/x86: amd-pmc: Set QOS during suspend on CZN w/ timer wakeup
Mauri Sandberg [Wed, 23 Feb 2022 14:23:37 +0000 (16:23 +0200)]
net: mv643xx_eth: process retval from of_get_mac_address
Obtaining a MAC address may be deferred in cases when the MAC is stored
in an NVMEM block, for example, and it may not be ready upon the first
retrieval attempt and return EPROBE_DEFER.
It is also possible that a port that does not rely on NVMEM has been
already created when getting the defer request. Thus, also the resources
allocated previously must be freed when doing a roll-back.
Fixes:
76723bca2802 ("net: mv643xx_eth: add DT parsing support")
Signed-off-by: Mauri Sandberg <maukka@ext.kapsi.fi>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220223142337.41757-1-maukka@ext.kapsi.fi
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Xin Long [Thu, 24 Feb 2022 03:41:08 +0000 (22:41 -0500)]
ping: remove pr_err from ping_lookup
As Jakub noticed, prints should be avoided on the datapath.
Also, as packets would never come to the else branch in
ping_lookup(), remove pr_err() from ping_lookup().
Fixes:
35a79e64de29 ("ping: fix the dif and sdif check in ping_lookup")
Reported-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/1ef3f2fcd31bd681a193b1fcf235eee1603819bd.1645674068.git.lucien.xin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Mateusz Palczewski [Wed, 23 Feb 2022 17:53:47 +0000 (09:53 -0800)]
Revert "i40e: Fix reset bw limit when DCB enabled with 1 TC"
Revert of a patch that instead of fixing a AQ error when trying
to reset BW limit introduced several regressions related to
creation and managing TC. Currently there are errors when creating
a TC on both PF and VF.
Error log:
[17428.783095] i40e 0000:3b:00.1: AQ command Config VSI BW allocation per TC failed = 14
[17428.783107] i40e 0000:3b:00.1: Failed configuring TC map 0 for VSI 391
[17428.783254] i40e 0000:3b:00.1: AQ command Config VSI BW allocation per TC failed = 14
[17428.783259] i40e 0000:3b:00.1: Unable to configure TC map 0 for VSI 391
This reverts commit
3d2504663c41104b4359a15f35670cfa82de1bbf.
Fixes:
3d2504663c41 (i40e: Fix reset bw limit when DCB enabled with 1 TC)
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20220223175347.1690692-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Paul Blakey [Wed, 23 Feb 2022 16:34:16 +0000 (18:34 +0200)]
openvswitch: Fix setting ipv6 fields causing hw csum failure
Ipv6 ttl, label and tos fields are modified without first
pulling/pushing the ipv6 header, which would have updated
the hw csum (if available). This might cause csum validation
when sending the packet to the stack, as can be seen in
the trace below.
Fix this by updating skb->csum if available.
Trace resulted by ipv6 ttl dec and then sending packet
to conntrack [actions: set(ipv6(hlimit=63)),ct(zone=99)]:
[295241.900063] s_pf0vf2: hw csum failure
[295241.923191] Call Trace:
[295241.925728] <IRQ>
[295241.927836] dump_stack+0x5c/0x80
[295241.931240] __skb_checksum_complete+0xac/0xc0
[295241.935778] nf_conntrack_tcp_packet+0x398/0xba0 [nf_conntrack]
[295241.953030] nf_conntrack_in+0x498/0x5e0 [nf_conntrack]
[295241.958344] __ovs_ct_lookup+0xac/0x860 [openvswitch]
[295241.968532] ovs_ct_execute+0x4a7/0x7c0 [openvswitch]
[295241.979167] do_execute_actions+0x54a/0xaa0 [openvswitch]
[295242.001482] ovs_execute_actions+0x48/0x100 [openvswitch]
[295242.006966] ovs_dp_process_packet+0x96/0x1d0 [openvswitch]
[295242.012626] ovs_vport_receive+0x6c/0xc0 [openvswitch]
[295242.028763] netdev_frame_hook+0xc0/0x180 [openvswitch]
[295242.034074] __netif_receive_skb_core+0x2ca/0xcb0
[295242.047498] netif_receive_skb_internal+0x3e/0xc0
[295242.052291] napi_gro_receive+0xba/0xe0
[295242.056231] mlx5e_handle_rx_cqe_mpwrq_rep+0x12b/0x250 [mlx5_core]
[295242.062513] mlx5e_poll_rx_cq+0xa0f/0xa30 [mlx5_core]
[295242.067669] mlx5e_napi_poll+0xe1/0x6b0 [mlx5_core]
[295242.077958] net_rx_action+0x149/0x3b0
[295242.086762] __do_softirq+0xd7/0x2d6
[295242.090427] irq_exit+0xf7/0x100
[295242.093748] do_IRQ+0x7f/0xd0
[295242.096806] common_interrupt+0xf/0xf
[295242.100559] </IRQ>
[295242.102750] RIP: 0033:0x7f9022e88cbd
[295242.125246] RSP: 002b:
00007f9022282b20 EFLAGS:
00000246 ORIG_RAX:
ffffffffffffffda
[295242.132900] RAX:
0000000000000005 RBX:
0000000000000010 RCX:
0000000000000000
[295242.140120] RDX:
00007f9022282ba8 RSI:
00007f9022282a30 RDI:
00007f9014005c30
[295242.147337] RBP:
00007f9014014d60 R08:
0000000000000020 R09:
00007f90254a8340
[295242.154557] R10:
00007f9022282a28 R11:
0000000000000246 R12:
0000000000000000
[295242.161775] R13:
00007f902308c000 R14:
000000000000002b R15:
00007f9022b71f40
Fixes:
3fdbd1ce11e5 ("openvswitch: add ipv6 'set' action")
Signed-off-by: Paul Blakey <paulb@nvidia.com>
Link: https://lore.kernel.org/r/20220223163416.24096-1-paulb@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Niels Dossche [Wed, 23 Feb 2022 13:19:56 +0000 (14:19 +0100)]
ipv6: prevent a possible race condition with lifetimes
valid_lft, prefered_lft and tstamp are always accessed under the lock
"lock" in other places. Reading these without taking the lock may result
in inconsistencies regarding the calculation of the valid and preferred
variables since decisions are taken on these fields for those variables.
Signed-off-by: Niels Dossche <dossche.niels@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Niels Dossche <niels.dossche@ugent.be>
Link: https://lore.kernel.org/r/20220223131954.6570-1-niels.dossche@ugent.be
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fabio M. De Francesco [Wed, 23 Feb 2022 10:02:52 +0000 (11:02 +0100)]
net/smc: Use a mutex for locking "struct smc_pnettable"
smc_pnetid_by_table_ib() uses read_lock() and then it calls smc_pnet_apply_ib()
which, in turn, calls mutex_lock(&smc_ib_devices.mutex).
read_lock() disables preemption. Therefore, the code acquires a mutex while in
atomic context and it leads to a SAC bug.
Fix this bug by replacing the rwlock with a mutex.
Reported-and-tested-by: syzbot+4f322a6d84e991c38775@syzkaller.appspotmail.com
Fixes:
64e28b52c7a6 ("net/smc: add pnet table namespace support")
Confirmed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Acked-by: Karsten Graul <kgraul@linux.ibm.com>
Link: https://lore.kernel.org/r/20220223100252.22562-1-fmdefrancesco@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Manish Chopra [Wed, 23 Feb 2022 08:57:20 +0000 (00:57 -0800)]
bnx2x: fix driver load from initrd
Commit
b7a49f73059f ("bnx2x: Utilize firmware 7.13.21.0") added
new firmware support in the driver with maintaining older firmware
compatibility. However, older firmware was not added in MODULE_FIRMWARE()
which caused missing firmware files in initrd image leading to driver load
failure from initrd. This patch adds MODULE_FIRMWARE() for older firmware
version to have firmware files included in initrd.
Fixes:
b7a49f73059f ("bnx2x: Utilize firmware 7.13.21.0")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215627
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Alok Prasad <palok@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Link: https://lore.kernel.org/r/20220223085720.12021-1-manishc@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Marek Marczykowski-Górecki [Tue, 22 Feb 2022 00:18:17 +0000 (01:18 +0100)]
Revert "xen-netback: Check for hotplug-status existence before watching"
This reverts commit
2afeec08ab5c86ae21952151f726bfe184f6b23d.
The reasoning in the commit was wrong - the code expected to setup the
watch even if 'hotplug-status' didn't exist. In fact, it relied on the
watch being fired the first time - to check if maybe 'hotplug-status' is
already set to 'connected'. Not registering a watch for non-existing
path (which is the case if hotplug script hasn't been executed yet),
made the backend not waiting for the hotplug script to execute. This in
turns, made the netfront think the interface is fully operational, while
in fact it was not (the vif interface on xen-netback side might not be
configured yet).
This was a workaround for 'hotplug-status' erroneously being removed.
But since that is reverted now, the workaround is not necessary either.
More discussion at
https://lore.kernel.org/xen-devel/
afedd7cb-a291-e773-8b0d-
4db9b291fa98@ipxe.org/T/#u
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Michael Brown <mbrown@fensystems.co.uk>
Link: https://lore.kernel.org/r/20220222001817.2264967-2-marmarek@invisiblethingslab.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Marek Marczykowski-Górecki [Tue, 22 Feb 2022 00:18:16 +0000 (01:18 +0100)]
Revert "xen-netback: remove 'hotplug-status' once it has served its purpose"
This reverts commit
1f2565780e9b7218cf92c7630130e82dcc0fe9c2.
The 'hotplug-status' node should not be removed as long as the vif
device remains configured. Otherwise the xen-netback would wait for
re-running the network script even if it was already called (in case of
the frontent re-connecting). But also, it _should_ be removed when the
vif device is destroyed (for example when unbinding the driver) -
otherwise hotplug script would not configure the device whenever it
re-appear.
Moving removal of the 'hotplug-status' node was a workaround for nothing
calling network script after xen-netback module is reloaded. But when
vif interface is re-created (on xen-netback unbind/bind for example),
the script should be called, regardless of who does that - currently
this case is not handled by the toolstack, and requires manual
script call. Keeping hotplug-status=connected to skip the call is wrong
and leads to not configured interface.
More discussion at
https://lore.kernel.org/xen-devel/
afedd7cb-a291-e773-8b0d-
4db9b291fa98@ipxe.org/T/#u
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Link: https://lore.kernel.org/r/20220222001817.2264967-1-marmarek@invisiblethingslab.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jens Axboe [Thu, 24 Feb 2022 14:02:15 +0000 (07:02 -0700)]
Merge tag 'nvme-5.17-2022-02-24' of git://git.infradead.org/nvme into block-5.17
Pull NVMe fixes from Christoph:
"nvme fixes for Linux 5.17
- send H2CData PDUs based on MAXH2CDATA (Varun Prakash)
- fix passthrough to namespaces with unsupported features (me)"
* tag 'nvme-5.17-2022-02-24' of git://git.infradead.org/nvme:
nvme-tcp: send H2CData PDUs based on MAXH2CDATA
nvme: also mark passthrough-only namespaces ready in nvme_update_ns_info
nvme: don't return an error from nvme_configure_metadata
Hans de Goede [Thu, 24 Feb 2022 10:18:48 +0000 (11:18 +0100)]
surface: surface3_power: Fix battery readings on batteries without a serial number
The battery on the 2nd hand Surface 3 which I recently bought appears to
not have a serial number programmed in. This results in any I2C reads from
the registers containing the serial number failing with an I2C NACK.
This was causing mshw0011_bix() to fail causing the battery readings to
not work at all.
Ignore EREMOTEIO (I2C NACK) errors when retrieving the serial number and
continue with an empty serial number to fix this.
Fixes:
b1f81b496b0d ("platform/x86: surface3_power: MSHW0011 rev-eng implementation")
BugLink: https://github.com/linux-surface/linux-surface/issues/608
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220224101848.7219-1-hdegoede@redhat.com
Mario Limonciello [Wed, 23 Feb 2022 17:52:37 +0000 (11:52 -0600)]
platform/x86: amd-pmc: Set QOS during suspend on CZN w/ timer wakeup
commit
59348401ebed ("platform/x86: amd-pmc: Add special handling for
timer based S0i3 wakeup") adds support for using another platform timer
in lieu of the RTC which doesn't work properly on some systems. This path
was validated and worked well before submission. During the 5.16-rc1 merge
window other patches were merged that caused this to stop working properly.
When this feature was used with 5.16-rc1 or later some OEM laptops with the
matching firmware requirements from that commit would shutdown instead of
program a timer based wakeup.
This was bisected to commit
8d89835b0467 ("PM: suspend: Do not pause
cpuidle in the suspend-to-idle path"). This wasn't supposed to cause any
negative impacts and also tested well on both Intel and ARM platforms.
However this changed the semantics of when CPUs are allowed to be in the
deepest state. For the AMD systems in question it appears this causes a
firmware crash for timer based wakeup.
It's hypothesized to be caused by the `amd-pmc` driver sending `OS_HINT`
and all the CPUs going into a deep state while the timer is still being
programmed. It's likely a firmware bug, but to avoid it don't allow setting
CPUs into the deepest state while using CZN timer wakeup path.
If later it's discovered that this also occurs from "regular" suspends
without a timer as well or on other silicon, this may be later expanded to
run in the suspend path for more scenarios.
Cc: stable@vger.kernel.org # 5.16+
Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/linux-acpi/BL1PR12MB51570F5BD05980A0DCA1F3F4E23A9@BL1PR12MB5157.namprd12.prod.outlook.com/T/#mee35f39c41a04b624700ab2621c795367f19c90e
Fixes:
8d89835b0467 ("PM: suspend: Do not pause cpuidle in the suspend-to-idle path")
Fixes:
23f62d7ab25b ("PM: sleep: Pause cpuidle later and resume it earlier during system transitions")
Fixes:
59348401ebed ("platform/x86: amd-pmc: Add special handling for timer based S0i3 wakeup"
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220223175237.6209-1-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
David S. Miller [Thu, 24 Feb 2022 10:43:28 +0000 (10:43 +0000)]
Merge tag 'linux-can-next-for-5.18-
20220224' of git://git./linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
this is a pull request of 36 patches for net-next/master.
The first 5 patches are by me and update various CAN DT bindings.
Eric Dumazet's patch for the CAN GW replaces a costly
synchronize_rcu() by a call_rcu().
The next 2 patches by me enhance the CAN bit rate handling, the bit
rate checking is simplified and the arguments and local variables of
functions are marked as const.
A patch by me for the kvaser_usb driver removes a redundant variable.
The next patch by me lets the c_can driver use the default ethtool
drvinfo.
Minghao Chi's patch for the softing driver removes a redundant
variable.
Srinivas Neeli contributes an enhancement for the xilinx_can NAPI poll
function.
Vincent Mailhol's patch for the etas_es58x driver converts to
BITS_PER_TYPE() from of manual calculation.
The next 23 patches target the mcp251xfd driver and are by me. The
first 15 patches, add support for the internal PLL, which includes
simplifying runtime PM handling, better chip detection and error
handling after wakeup, and the PLL handling. The last 8 patches
prepare the driver to support multiple RX-FIFOs and runtime
configurable RX/TX rings. The actual runtime ring configuration via
ethtool will be added in a later patch series.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Marc Kleine-Budde [Mon, 11 Oct 2021 20:37:34 +0000 (22:37 +0200)]
can: mcp251xfd: mcp251xfd_priv: introduce macros specifying the number of supported TEF/RX/TX rings
This patch introduces macros to define the number of supported TEF, RX
and TX rings. As well as some assertions as sanity checks.
Link: https://lore.kernel.org/all/20220217103826.2299157-9-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Sun, 10 Oct 2021 19:39:59 +0000 (21:39 +0200)]
can: mcp251xfd: prepare for multiple RX-FIFOs
This patch prepares the driver to use more than one RX-FIFO. Having a
bigger RX buffer is beneficial in high load situations, where the
system temporarily cannot keep up reading CAN frames from the chip.
Using a bigger RX buffer also allows to implement RX IRQ coalescing,
which will be added in a later patch series.
If using more than 1 RX-FIFO the driver has to figure out, which FIFOs
have RX'ed CAN frames pending. This is indicated by a set bit in the
RXIF register, which is positioned directly after the interrupt status
register INT. If more than 1 RX-FIFO is used, the driver reads both
registers in 1 transfer.
The mcp251xfd_handle_rxif() function iterates over all RX rings and
reads out the RX'ed CAN frames for for all pending FIFOs. To keep the
logic for the 1 RX-FIFO only case in mcp251xfd_handle_rxif() simple,
the driver marks that FIFO pending in mcp251xfd_ring_init().
The chip has a dedicated RX interrupt line to signal pending RX'ed
frames. If connected to an input GPIO and the driver will skip the
initial read of the interrupt status register (INT) and directly read
the pending RX'ed frames if the line is active. The driver assumes the
1st RX-FIFO pending (a read of the RXIF register would re-introduce
the skipped initial read of the INT register). Any other pending
RX-FIFO will be served in the main interrupt handler.
Link: https://lore.kernel.org/all/20220217103826.2299157-8-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Wed, 4 Aug 2021 11:26:34 +0000 (13:26 +0200)]
can: mcp251xfd: ring: update FIFO setup debug info
The recent change of the order of the TX and RX FIFOs is not reflected
in the debug info of the FIFO setup. This patch adjust the order and
additionally prints the base address of each FIFO.
Since the mcp251xfd_ring_init() may fail due to wrongly configured
FIFOs, printing of the FIFO setup is moved there. In case of an error
it would not be printed in mcp251xfd_ring_init().
Link: https://lore.kernel.org/all/20220217103826.2299157-7-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 3 Aug 2021 14:32:01 +0000 (16:32 +0200)]
can: mcp251xfd: ring: mcp251xfd_ring_init(): checked RAM usage of ring setup
With this patch the usage of the on-chip RAM is checked. In the
current driver the FIFO setup is fixed and always fits into the RAM.
With an upcoming patch series the ring and FIFO setup will be more
dynamic. Although using more RAM than available should not happen, but
add this safety check, just in case.
Link: https://lore.kernel.org/all/20220217103826.2299157-6-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 3 Aug 2021 14:33:48 +0000 (16:33 +0200)]
can: mcp251xfd: ring: change order of TX and RX FIFOs
This patch actually changes the order of the TX and RX FIFOs.
This gives the opportunity to minimize the number of SPI transfers in
the IRQ handler. The read of the IRQ status register and RX FIFO
status registers can be combined into single SPI transfer. If the RX
ring uses FIFO 1, the overall length of the transfer is smaller than
in the original layout, where the RX FIFO comes after the TX FIFO.
Link: https://lore.kernel.org/all/20220217103826.2299157-5-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 3 Aug 2021 14:32:01 +0000 (16:32 +0200)]
can: mcp251xfd: ring: prepare to change order of TX and RX FIFOs
This patch improves the initialization of the TX and RX rings. The
initialization functions are now called with pointers to the next free
address (in the on chip RAM) and next free hardware FIFO. The rings
are initialized using these values and the pointers are modified to
point to the next free elements.
This means the order of the mcp251xfd_ring_init_*() functions
specifies the order of the rings in the hardware FIFO. This makes it
possible to change the order of the TX and RX FIFOs, which is done in
the next patch.
This gives the opportunity to minimize the number of SPI transfers in
the IRQ handler. The read of the IRQ status register and RX FIFO
status registers can be combined into single SPI transfer. If the RX
ring uses FIFO 1, the overall length of the transfer is smaller than
in the original layout, where the RX FIFO comes after the TX FIFO.
Link: https://lore.kernel.org/all/20220217103826.2299157-4-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 3 Aug 2021 14:17:57 +0000 (16:17 +0200)]
can: mcp251xfd: mcp251xfd_ring_init(): split ring_init into separate functions
This patch splits the initialization of the TEF, TX and RX FIFO in the
mcp251xfd_ring_init() function into separate functions. This is a
preparation patch to move the RX FIFO in front of the TX FIFO.
Link: https://lore.kernel.org/all/20220217103826.2299157-3-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Fri, 21 May 2021 17:51:32 +0000 (19:51 +0200)]
can: mcp251xfd: introduce struct mcp251xfd_tx_ring::nr and ::fifo_nr and make use of it
This patch removes the hard coded assumption that the TX ring uses
hardware FIFO 1. This allows the hardware FIFO 1 to be used for RX and
the next free FIFO for TX.
This gives the opportunity to minimize the number of SPI transfers in
the IRQ handler. The read of the IRQ status register and RX FIFO
status registers can be combined into single SPI transfer. If the RX
ring uses FIFO 1, the overall length of the transfer is smaller than
in the original layout, where the RX FIFO comes after the TX FIFO.
Link: https://lore.kernel.org/all/20220217103826.2299157-2-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Fri, 16 Oct 2020 20:36:39 +0000 (22:36 +0200)]
can: mcp251xfd: add support for internal PLL
The PLL is enabled if the configured clock is less than or equal to 10 times
the max clock frequency.
The device will operate with two different SPI speeds. A slow speed determined
by the clock without the PLL enabled, and a fast speed derived from the
frequency with the PLL enabled.
Link: https://lore.kernel.org/all/20220207131047.282110-16-mkl@pengutronix.de
Link: https://lore.kernel.org/all/20201015124401.2766-3-mas@csselectronics.com
Co-developed-by: Magnus Aagaard Sørensen <mas@csselectronics.com>
Signed-off-by: Magnus Aagaard Sørensen <mas@csselectronics.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Mon, 19 Oct 2020 07:59:28 +0000 (09:59 +0200)]
can: mcp251xfd: mcp251xfd_register(): prepare to activate PLL after softreset
If the PLL is needed it must be switched on after chip reset. This
patch adds the required call to mcp251xfd_register().
Link: https://lore.kernel.org/all/20220207131047.282110-15-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Mon, 19 Oct 2020 07:59:28 +0000 (09:59 +0200)]
can: mcp251xfd: mcp251xfd_chip_clock_init(): prepare for PLL support, wait for OSC ready
This patch prepares the mcp251xfd_chip_clock_init() function for PLL
support.
If the PLL is needed is must be switched on after chip reset. This
should be done in the mcp251xfd_chip_clock_init() function. Prepare
this function to wait for the OSC and PLL to be ready.
Link: https://lore.kernel.org/all/20220207131047.282110-14-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
projects / platform / kernel / linux-rpi.git / log