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1030415 commits

Author SHA1 Message Date
Jeremy Kerr
60fc639816 mctp: Add sockaddr_mctp to uapi
This change introduces the user-visible MCTP header, containing the
protocol-specific addressing definitions.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 15:06:50 +01:00
Jeremy Kerr
2c8e2e9aec mctp: Add base packet definitions
Simple packet header format as defined by DMTF DSP0236.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 15:06:49 +01:00
Jeremy Kerr
8f601a1e4f mctp: Add base socket/protocol definitions
Add an empty socket implementation, plus initialisation/destruction
handlers.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 15:06:49 +01:00
Jeremy Kerr
bc49d8169a mctp: Add MCTP base
Add basic Kconfig, an initial (empty) af_mctp source object, and
{AF,PF}_MCTP definitions, and the required definitions for a new
protocol type.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 15:06:49 +01:00
David S. Miller
658e6b1612 Merge branch 'nfc-const'
Krzysztof Kozlowski says:

====================
nfc: constify, continued (part 2)

On top of:
nfc: constify pointed data
https://lore.kernel.org/lkml/20210726145224.146006-1-krzysztof.kozlowski@canonical.com/
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
2695503729 nfc: mrvl: constify static nfcmrvl_if_ops
File-scope struct nfcmrvl_if_ops is not modified so can be made const.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
fe53159fe3 nfc: mrvl: constify several pointers
Several functions do not modify pointed data so arguments and local
variables can be const for correctness and safety.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
a751449f8b nfc: microread: constify several pointers
Several functions do not modify pointed data so arguments and local
variables can be const for correctness and safety.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
3d463dd502 nfc: fdp: constify several pointers
Several functions do not modify pointed data so arguments and local
variables can be const for correctness and safety.  This allows also
making file-scope nci_core_get_config_otp_ram_version array const.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
c3e26b6dc1 nfc: fdp: use unsigned int as loop iterator
Loop iterators are simple integers, no point to optimize the size and
use u8.  It only raises the question whether the variable is used in
some other context.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
6c755b1d25 nfc: fdp: drop unneeded cast for printing firmware size in dev_dbg()
Size of firmware is a type of size_t, so print it directly instead of
casting to int.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
582fdc98ad nfc: nfcsim: constify drvdata (struct nfcsim)
nfcsim_abort_cmd() does not modify struct nfcsim, so local variable
can be a pointer to const.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
83428dbbac nfc: virtual_ncidev: constify pointer to nfc_dev
virtual_ncidev_ioctl() does not modify struct nfc_dev, so local variable
can be a pointer to const.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
ea050c5ee7 nfc: trf7970a: constify several pointers
Several functions do not modify pointed data so arguments and local
variables can be const for correctness and safety.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
9a4af01c35 nfc: port100: constify several pointers
Several functions do not modify pointed data so arguments and local
variables can be const for correctness and safety.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:03 +01:00
Krzysztof Kozlowski
894a6e1586 nfc: mei_phy: constify buffer passed to mei_nfc_send()
The buffer passed to mei_nfc_send() can be const for correctness and
safety.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:02 +01:00
Krzysztof Kozlowski
dd8987a394 nfc: constify passed nfc_dev
The struct nfc_dev is not modified by nfc_get_drvdata() and
nfc_device_name() so it can be made a const.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:28:02 +01:00
David S. Miller
8cb79af5c6 Merge branch 'skb-gro-optimize'
Paolo Abeni says:

====================
sk_buff: optimize GRO for the common case

This is a trimmed down revision of "sk_buff: optimize layout for GRO",
specifically dropping the changes to the sk_buff layout[1].

This series tries to accomplish 2 goals:
- optimize the GRO stage for the most common scenario, avoiding a bunch
  of conditional and some more code
- let owned skbs entering the GRO engine, allowing backpressure in the
  veth GRO forward path.

A new sk_buff flag (!!!) is introduced and maintained for GRO's sake.
Such field uses an existing hole, so there is no change to the sk_buff
size.

[1] two main reasons:
- move skb->inner_ field requires some extra care, as some in kernel
  users access and the fields regardless of skb->encapsulation.
- extending secmark size clash with ct and nft uAPIs

address the all above is possible, I think, but for sure not in a single
series.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:18:51 +01:00
Paolo Abeni
d504fff0d1 veth: use skb_prepare_for_gro()
Leveraging the previous patch we can now avoid orphaning the
skb in the veth gro path, allowing correct backpressure.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:18:12 +01:00
Paolo Abeni
5e10da5385 skbuff: allow 'slow_gro' for skb carring sock reference
This change leverages the infrastructure introduced by the previous
patches to allow soft devices passing to the GRO engine owned skbs
without impacting the fast-path.

It's up to the GRO caller ensuring the slow_gro bit validity before
invoking the GRO engine. The new helper skb_prepare_for_gro() is
introduced for that goal.

On slow_gro, skbs are aggregated only with equal sk.
Additionally, skb truesize on GRO recycle and free is correctly
updated so that sk wmem is not changed by the GRO processing.

rfc-> v1:
 - fixed bad truesize on dev_gro_receive NAPI_FREE
 - use the existing state bit

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:18:12 +01:00
Paolo Abeni
9efb4b5baf net: optimize GRO for the common case.
After the previous patches, at GRO time, skb->slow_gro is
usually 0, unless the packets comes from some H/W offload
slowpath or tunnel.

We can optimize the GRO code assuming !skb->slow_gro is likely.
This remove multiple conditionals in the most common path, at the
price of an additional one when we hit the above "slow-paths".

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:18:12 +01:00
Paolo Abeni
b0999f385a sk_buff: track extension status in slow_gro
Similar to the previous one, but tracking the
active_extensions field status.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:18:11 +01:00
Paolo Abeni
8a886b142b sk_buff: track dst status in slow_gro
Similar to the previous patch, but covering the dst field:
the slow_gro flag is additionally set when a dst is attached
to the skb

RFC -> v1:
 - use the existing flag instead of adding a new one

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:18:11 +01:00
Paolo Abeni
5fc88f93ed sk_buff: introduce 'slow_gro' flags
The new flag tracks if any state field is set, so that
GRO requires 'unusual'/slow prepare steps.

Set such flag when a ct entry is attached to the skb,
and never clear it.

The new bit uses an existing hole into the sk_buff struct

RFC -> v1:
 - use a single state bit, never clear it
 - avoid moving the _nfct field

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 12:18:11 +01:00
Hu Haowen
883d71a55e Documentation: networking: add ioam6-sysctl into index
Append ioam6-sysctl to toctree in order to get rid of building warnings.

Signed-off-by: Hu Haowen <src.res@email.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 21:28:40 +01:00
Vladimir Oltean
b11f0a4c0c net: dsa: sja1105: be stateless when installing FDB entries
Currently there are issues when adding a bridge FDB entry as VLAN-aware
and deleting it as VLAN-unaware, or vice versa.

However this is an unneeded complication, since the bridge always
installs its default FDB entries in VLAN 0 to match on VLAN-unaware
ports, and in the default_pvid (VLAN 1) to match on VLAN-aware ports.
So instead of trying to outsmart the bridge, just install all entries it
gives us, and they will start matching packets when the vlan_filtering
mode changes.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:28:01 +01:00
David S. Miller
b0fdb99943 Merge branch 'switchdev-notifiers'
Vladimir Oltean says:

====================
Plug the last 2 holes in the switchdev notifiers for local FDB entries

The work for trapping local FDB entries to the CPU in switchdev/DSA
started with the "RX filtering in DSA" series:
https://patchwork.kernel.org/project/netdevbpf/cover/20210629140658.2510288-1-olteanv@gmail.com/
and was continued with further improvements such as "Fan out FDB entries
pointing towards the bridge to all switchdev member ports":
https://patchwork.kernel.org/project/netdevbpf/cover/20210719135140.278938-1-vladimir.oltean@nxp.com/
https://patchwork.kernel.org/project/netdevbpf/cover/20210720173557.999534-1-vladimir.oltean@nxp.com/

There are only 2 more issues left to be addressed (famous last words),
and these are:
- dynamically learned FDB entries towards interfaces foreign to DSA need
  to be replayed too
- adding/deleting a VLAN on a port causes the local FDB entries in that
  VLAN to be prematurely deleted

This patch series addresses both, and patch 2 depends on 1 to work properly.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:26:05 +01:00
Vladimir Oltean
52e4bec155 net: bridge: switchdev: treat local FDBs the same as entries towards the bridge
Currently the following script:

1. ip link add br0 type bridge vlan_filtering 1 && ip link set br0 up
2. ip link set swp2 up && ip link set swp2 master br0
3. ip link set swp3 up && ip link set swp3 master br0
4. ip link set swp4 up && ip link set swp4 master br0
5. bridge vlan del dev swp2 vid 1
6. bridge vlan del dev swp3 vid 1
7. ip link set swp4 nomaster
8. ip link set swp3 nomaster

produces the following output:

[  641.010738] sja1105 spi0.1: port 2 failed to delete 00:1f:7b:63:02:48 vid 1 from fdb: -2

[ swp2, swp3 and br0 all have the same MAC address, the one listed above ]

In short, this happens because the number of FDB entry additions
notified to switchdev is unbalanced with the number of deletions.

At step 1, the bridge has a random MAC address. At step 2, the
br_fdb_replay of swp2 receives this initial MAC address. Then the bridge
inherits the MAC address of swp2 via br_fdb_change_mac_address(), and it
notifies switchdev (only swp2 at this point) of the deletion of the
random MAC address and the addition of 00:1f:7b:63:02:48 as a local FDB
entry with fdb->dst == swp2, in VLANs 0 and the default_pvid (1).

During step 7:

del_nbp
-> br_fdb_delete_by_port(br, p, vid=0, do_all=1);
   -> fdb_delete_local(br, p, f);

br_fdb_delete_by_port() deletes all entries towards the ports,
regardless of vid, because do_all is 1.

fdb_delete_local() has logic to migrate local FDB entries deleted from
one port to another port which shares the same MAC address and is in the
same VLAN, or to the bridge device itself. This migration happens
without notifying switchdev of the deletion on the old port and the
addition on the new one, just fdb->dst is changed and the added_by_user
flag is cleared.

In the example above, the del_nbp(swp4) causes the
"addr 00:1f:7b:63:02:48 vid 1" local FDB entry with fdb->dst == swp4
that existed up until then to be migrated directly towards the bridge
(fdb->dst == NULL). This is because it cannot be migrated to any of the
other ports (swp2 and swp3 are not in VLAN 1).

After the migration to br0 takes place, swp4 requests a deletion replay
of all FDB entries. Since the "addr 00:1f:7b:63:02:48 vid 1" entry now
point towards the bridge, a deletion of it is replayed. There was just
a prior addition of this address, so the switchdev driver deletes this
entry.

Then, the del_nbp(swp3) at step 8 triggers another br_fdb_replay, and
switchdev is notified again to delete "addr 00:1f:7b:63:02:48 vid 1".
But it can't because it no longer has it, so it returns -ENOENT.

There are other possibilities to trigger this issue, but this is by far
the simplest to explain.

To fix this, we must avoid the situation where the addition of an FDB
entry is notified to switchdev as a local entry on a port, and the
deletion is notified on the bridge itself.

Considering that the 2 types of FDB entries are completely equivalent
and we cannot have the same MAC address as a local entry on 2 bridge
ports, or on a bridge port and pointing towards the bridge at the same
time, it makes sense to hide away from switchdev completely the fact
that a local FDB entry is associated with a given bridge port at all.
Just say that it points towards the bridge, it should make no difference
whatsoever to the switchdev driver and should even lead to a simpler
overall implementation, will less cases to handle.

This also avoids any modification at all to the core bridge driver, just
what is reported to switchdev changes. With the local/permanent entries
on bridge ports being already reported to user space, it is hard to
believe that the bridge behavior can change in any backwards-incompatible
way such as making all local FDB entries point towards the bridge.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:25:50 +01:00
Vladimir Oltean
b4454bc6a0 net: bridge: switchdev: replay the entire FDB for each port
Currently when a switchdev port joins a bridge, we replay all FDB
entries pointing towards that port or towards the bridge.

However, this is insufficient in certain situations:

(a) DSA, through its assisted_learning_on_cpu_port logic, snoops
    dynamically learned FDB entries on foreign interfaces.
    These are FDB entries that are pointing neither towards the newly
    joined switchdev port, nor towards the bridge. So these addresses
    would be missed when joining a bridge where a foreign interface has
    already learned some addresses, and they would also linger on if the
    DSA port leaves the bridge before the foreign interface forgets them.
    None of this happens if we replay the entire FDB when the port joins.

(b) There is a desire to treat local FDB entries on a port (i.e. the
    port's termination MAC address) identically to FDB entries pointing
    towards the bridge itself. More details on the reason behind this in
    the next patch. The point is that this cannot be done given the
    current structure of br_fdb_replay() in this situation:
      ip link set swp0 master br0  # br0 inherits its MAC address from swp0
      ip link set swp1 master br0
    What is desirable is that when swp1 joins the bridge, br_fdb_replay()
    also notifies swp1 of br0's MAC address, but this won't in fact
    happen because the MAC address of br0 does not have fdb->dst == NULL
    (it doesn't point towards the bridge), but it has fdb->dst == swp0.
    So our current logic makes it impossible for that address to be
    replayed. But if we dump the entire FDB instead of just the entries
    with fdb->dst == swp1 and fdb->dst == NULL, then the inherited MAC
    address of br0 will be replayed too, which is what we need.

A natural question arises: say there is an FDB entry to be replayed,
like a MAC address dynamically learned on a foreign interface that
belongs to a bridge where no switchdev port has joined yet. If 10
switchdev ports belonging to the same driver join this bridge, one by
one, won't every port get notified 10 times of the foreign FDB entry,
amounting to a total of 100 notifications for this FDB entry in the
switchdev driver?

Well, yes, but this is where the "void *ctx" argument for br_fdb_replay
is useful: every port of the switchdev driver is notified whenever any
other port requests an FDB replay, but because the replay was initiated
by a different port, its context is different from the initiating port's
context, so it ignores those replays.

So the foreign FDB entry will be installed only 10 times, once per port.
This is done so that the following 4 code paths are always well balanced:
(a) addition of foreign FDB entry is replayed when port joins bridge
(b) deletion of foreign FDB entry is replayed when port leaves bridge
(c) addition of foreign FDB entry is notified to all ports currently in bridge
(c) deletion of foreign FDB entry is notified to all ports currently in bridge

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:25:50 +01:00
David S. Miller
1159da6410 Merge branch 'bnxt_en-ptp'
Michael Chan says:

====================
bnxt_en: PTP enhancements

This series adds two PTP enhancements.  This first one is to register
the PHC during probe time and keep it registered whether it is in
ifup or ifdown state.  It will get unregistered and possibly
reregistered if the firmware PTP capability changes after firmware
reset.  The second one is to add the 1PPS (one pulse per second)
feature to support input/output of the 1PPS signal.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:23:45 +01:00
Pavan Chebbi
abf90ac2c2 bnxt_en: Log if an invalid signal detected on TSIO pin
FW can report to driver via ASYNC event if it encountered an
invalid signal on any TSIO PIN. Driver will log this event
for the user to take corrective action.

Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Arvind Susarla <arvind.susarla@broadcom.com>
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:23:33 +01:00
Pavan Chebbi
099fdeda65 bnxt_en: Event handler for PPS events
Once the PPS pins are configured, the FW can report
PPS values using ASYNC event. This patch adds the
ASYNC event handler and subsequent reporting of the
events to kernel.

Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:23:33 +01:00
Pavan Chebbi
9e518f2580 bnxt_en: 1PPS functions to configure TSIO pins
Application will send ioctls to set/clear PPS pin functions
based on user input. This patch implements the driver
callbacks that will configure the TSIO pins using firmware
commands. After firmware reset, the TSIO pins will be reconfigured
again.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:23:33 +01:00
Pavan Chebbi
caf3eedbcd bnxt_en: 1PPS support for 5750X family chips
1PPS (One Pulse Per Second) is a signal generated either
by the NIC PHC or an external timing source.
Integrating the support to configure and use 1PPS using
the TSIO pins along with PTP timestamps will add Grand
Master capability to the 5750X family chipsets.

This patch initializes the driver data structures and
registers the 1PPS with kernel, based on the TSIO pins'
capability in the hardware. This will create a /dev/ppsX
device which applications can use to receive PPS events.

Later patches will define functions to configure and use
the pins.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:23:33 +01:00
Michael Chan
30e96f487f bnxt_en: Do not read the PTP PHC during chip reset
During error recovery or hot firmware upgrade, the chip may be under
reset and the PHC register read cycles may cause completion timeouts.
Check that the chip is not under reset condition before proceeding
to read the PHC by checking the flag BNXT_STATE_IN_FW_RESET.  We also
need to take the ptp_lock before we set this flag to prevent race
conditions.

We need this logic because the PHC now will stay registered after
bnxt_close().

Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:23:33 +01:00
Michael Chan
a521c8a01d bnxt_en: Move bnxt_ptp_init() from bnxt_open() back to bnxt_init_one()
It was pointed out by Richard Cochran that registering the PHC during
probe is better than during ifup, so move bnxt_ptp_init() back to
bnxt_init_one().  In order to work correctly after firmware reset which
may result in PTP config. changes, we modify bnxt_ptp_init() to return
if the PHC has been registered earlier.  If PTP is no longer supported
by the new firmware, we will unregister the PHC and clean up.

This partially reverts:

d7859afb68 ("bnxt_en: Move bnxt_ptp_init() to bnxt_open()")

Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 20:23:33 +01:00
David S. Miller
63caca1e3e Merge branch 'fec-next'
Joakim Zhang says:

====================
net: fec: add support for i.MX8MQ and i.MX8QM

This patch set adds supports for i.MX8MQ and i.MX8QM, both of them extend new features.

ChangeLogs:
V1->V2:
	* rebase on schema binding, and update dts compatible string.
	* use generic ethernet controller property for MAC internal RGMII clock delay
	  rx-internal-delay-ps and tx-internal-delay-ps
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 13:39:03 +01:00
Joakim Zhang
987e1b96d0 arm64: dts: imx8qxp: add "fsl,imx8qm-fec" compatible string for FEC
Add "fsl,imx8qm-fec" compatible string for FEC to support new feature
(RGMII delayed clock).

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 13:38:53 +01:00
Joakim Zhang
a758dee8ac arm64: dts: imx8m: add "fsl,imx8mq-fec" compatible string for FEC
Add "fsl,imx8mq-fec" compatible string for FEC to support new feature
(IEEE 802.3az EEE standard).

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 13:38:53 +01:00
Fugang Duan
fc539459e9 net: fec: add MAC internal delayed clock feature support
i.MX8QM ENET IP version support timing specification that MAC
integrate clock delay in RGMII mode, the delayed TXC/RXC as an
alternative option to work well with various PHYs.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 13:38:53 +01:00
Fugang Duan
b82f8c3f14 net: fec: add eee mode tx lpi support
The i.MX8MQ ENET version support IEEE802.3az eee mode, add
eee mode tx lpi enable to support ethtool interface.

usage:
1. set sleep and wake timer to 5ms:
ethtool --set-eee eth0 eee on tx-lpi on tx-timer 5000
2. check the eee mode:
~# ethtool --show-eee eth0
EEE Settings for eth0:
        EEE status: enabled - active
        Tx LPI: 5000 (us)
        Supported EEE link modes:  100baseT/Full
                                   1000baseT/Full
        Advertised EEE link modes:  100baseT/Full
                                    1000baseT/Full
        Link partner advertised EEE link modes:  100baseT/Full

Note: For realtime case and IEEE1588 ptp case, it should disable
EEE mode.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 13:38:53 +01:00
Fugang Duan
947240ebcc net: fec: add imx8mq and imx8qm new versions support
The ENET of imx8mq and imx8qm are basically the same as imx6sx,
but they have new features support based on imx6sx, like:
- imx8mq: supports IEEE 802.3az EEE standard.
- imx8qm: supports RGMII mode delayed clock.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 13:38:53 +01:00
Joakim Zhang
df11b8073e dt-bindings: net: fsl,fec: add RGMII internal clock delay
Add RGMII internal clock delay for FEC controller.

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 13:38:53 +01:00
Joakim Zhang
5d88694703 dt-bindings: net: fsl,fec: update compatible items
Add more compatible items for i.MX8/8M platforms.

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 13:38:53 +01:00
Peilin Ye
68f9884837 tc-testing: Add control-plane selftest for skbmod SKBMOD_F_ECN option
Recently we added a new option, SKBMOD_F_ECN, to tc-skbmod(8).  Add a
control-plane selftest for it.

Depends on kernel patch "net/sched: act_skbmod: Add SKBMOD_F_ECN option
support", as well as iproute2 patch "tc/skbmod: Introduce SKBMOD_F_ECN
option".

Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 13:19:32 +01:00
Peilin Ye
56af5e749f net/sched: act_skbmod: Add SKBMOD_F_ECN option support
Currently, when doing rate limiting using the tc-police(8) action, the
easiest way is to simply drop the packets which exceed or conform the
configured bandwidth limit.  Add a new option to tc-skbmod(8), so that
users may use the ECN [1] extension to explicitly inform the receiver
about the congestion instead of dropping packets "on the floor".

The 2 least significant bits of the Traffic Class field in IPv4 and IPv6
headers are used to represent different ECN states [2]:

	0b00: "Non ECN-Capable Transport", Non-ECT
	0b10: "ECN Capable Transport", ECT(0)
	0b01: "ECN Capable Transport", ECT(1)
	0b11: "Congestion Encountered", CE

As an example:

	$ tc filter add dev eth0 parent 1: protocol ip prio 10 \
		matchall action skbmod ecn

Doing the above marks all ECT(0) and ECT(1) packets as CE.  It does NOT
affect Non-ECT or non-IP packets.  In the tc-police scenario mentioned
above, users may pipe a tc-police action and a tc-skbmod "ecn" action
together to achieve ECN-based rate limiting.

For TCP connections, upon receiving a CE packet, the receiver will respond
with an ECE packet, asking the sender to reduce their congestion window.
However ECN also works with other L4 protocols e.g. DCCP and SCTP [2], and
our implementation does not touch or care about L4 headers.

The updated tc-skbmod SYNOPSIS looks like the following:

	tc ... action skbmod { set SETTABLE | swap SWAPPABLE | ecn } ...

Only one of "set", "swap" or "ecn" shall be used in a single tc-skbmod
command.  Trying to use more than one of them at a time is considered
undefined behavior; pipe multiple tc-skbmod commands together instead.
"set" and "swap" only affect Ethernet packets, while "ecn" only affects
IPv{4,6} packets.

It is also worth mentioning that, in theory, the same effect could be
achieved by piping a "police" action and a "bpf" action using the
bpf_skb_ecn_set_ce() helper, but this requires eBPF programming from the
user, thus impractical.

Depends on patch "net/sched: act_skbmod: Skip non-Ethernet packets".

[1] https://datatracker.ietf.org/doc/html/rfc3168
[2] https://en.wikipedia.org/wiki/Explicit_Congestion_Notification

Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 13:19:31 +01:00
Yang Yingliang
d80f6d6665 nfp: flower-ct: fix error return code in nfp_fl_ct_add_offload()
If nfp_tunnel_add_ipv6_off() fails, it should return error code
in nfp_fl_ct_add_offload().

Fixes: 5a2b930416 ("nfp: flower-ct: compile match sections of flow_payload")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 12:56:30 +01:00
David S. Miller
3bdc70669e Merge branch 'devlink-register'
Leon Romanovsky says:

====================
Remove duplicated devlink registration check

Changelog:
v1:
 * Added two new patches that remove registration field from mlx5 and ti drivers.
v0: https://lore.kernel.org/lkml/ed7bbb1e4c51dd58e6035a058e93d16f883b09ce.1627215829.git.leonro@nvidia.com

--------------------------------------------------------------------

Both registered flag and devlink pointer are set at the same time
and indicate the same thing - devlink/devlink_port are ready. Instead
of checking ->registered use devlink pointer as an indication.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 10:23:59 +01:00
Leon Romanovsky
d7907a2b1a devlink: Remove duplicated registration check
Both registered flag and devlink pointer are set at the same time
and indicate the same thing - devlink/devlink_port are ready. Instead
of checking ->registered use devlink pointer as an indication.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 10:23:45 +01:00
Leon Romanovsky
35f6986743 net/mlx5: Don't rely on always true registered field
Devlink is an integral part of mlx5 driver and all flows ensure that
devlink_*_register() will success. That makes the ->registered check
an obsolete.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-28 10:23:45 +01:00