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  1. 10 Apr, 2024 4 commits
  3. 09 Apr, 2024 24 commits
  5. 08 Apr, 2024 12 commits
    • Heiner Kallweit's avatar
      r8169: add support for RTL8168M · 39f59c72
      Heiner Kallweit authored 
      A user reported an unknown chip version. According to the r8168 vendor
driver it's called RTL8168M, but handling is identical to RTL8168H.
So let's simply treat it as RTL8168H.
Tested-by: default avatarЕвгений <octobergun@gmail.com>
Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      39f59c72
    • David S. Miller's avatar
      Merge branch 'devlink-io-eqs' · 358961f5
      David S. Miller authored 
      Parav Pandit says:

====================
devlink: Add port function attribute for IO EQs

Currently, PCI SFs and VFs use IO event queues to deliver netdev per
channel events. The number of netdev channels is a function of IO
event queues. In the second scenario of an RDMA device, the
completion vectors are also a function of IO event queues. Currently, an
administrator on the hypervisor has no means to provision the number
of IO event queues for the SF device or the VF device. Device/firmware
determines some arbitrary value for these IO event queues. Due to this,
the SF netdev channels are unpredictable, and consequently, the
performance is too.

This short series introduces a new port function attribute: max_io_eqs.
The goal is to provide administrators at the hypervisor level with the
ability to provision the maximum number of IO event queues for a
function. This gives the control to the administrator to provision
right number of IO event queues and have predictable performance.

Examples of when an administrator provisions (set) maximum number of
IO event queues when using switchdev mode:

  $ devlink port show pci/0000:06:00.0/1
      pci/0000:06:00.0/1: type eth netdev enp6s0pf0vf0 flavour pcivf pfnum 0 vfnum 0
          function:
          hw_addr 00:00:00:00:00:00 roce enable max_io_eqs 10

  $ devlink port function set pci/0000:06:00.0/1 max_io_eqs 20

  $ devlink port show pci/0000:06:00.0/1
      pci/0000:06:00.0/1: type eth netdev enp6s0pf0vf0 flavour pcivf pfnum 0 vfnum 0
          function:
          hw_addr 00:00:00:00:00:00 roce enable max_io_eqs 20

This sets the corresponding maximum IO event queues of the function
before it is enumerated. Thus, when the VF/SF driver reads the
capability from the device, it sees the value provisioned by the
hypervisor. The driver is then able to configure the number of channels
for the net device, as well as the number of completion vectors
for the RDMA device. The device/firmware also honors the provisioned
value, hence any VF/SF driver attempting to create IO EQs
beyond provisioned value results in an error.

With above setting now, the administrator is able to achieve the 2x
performance on SFs with 20 channels. In second example when SF was
provisioned for a container with 2 cpus, the administrator provisioned only
2 IO event queues, thereby saving device resources.

With the above settings now in place, the administrator achieved 2x
performance with the SF device with 20 channels. In the second example,
when the SF was provisioned for a container with 2 CPUs, the administrator
provisioned only 2 IO event queues, thereby saving device resources.

changelog:
v2->v3:
- limited to 80 chars per line in devlink
- fixed comments from Jakub in mlx5 driver to fix missing mutex unlock
  on error path
v1->v2:
- limited comment to 80 chars per line in header file
- fixed set function variables for reverse christmas tree
- fixed comments from Kalesh
- fixed missing kfree in get call
- returning error code for get cmd failure
- fixed error msg copy paste error in set on cmd failure
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      358961f5
    • Parav Pandit's avatar
      mlx5/core: Support max_io_eqs for a function · 93197c7c
      Parav Pandit authored 
      Implement get and set for the maximum IO event queues for SF and VF.
This enables administrator on the hypervisor to control the maximum
IO event queues which are typically used to derive the maximum and
default number of net device channels or rdma device completion vectors.
Reviewed-by: default avatarShay Drory <shayd@nvidia.com>
Signed-off-by: default avatarParav Pandit <parav@nvidia.com>
Reviewed-by: default avatarJiri Pirko <jiri@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      93197c7c
    • Parav Pandit's avatar
      devlink: Support setting max_io_eqs · 5af3e387
      Parav Pandit authored 
      Many devices send event notifications for the IO queues,
such as tx and rx queues, through event queues.

Enable a privileged owner, such as a hypervisor PF, to set the number
of IO event queues for the VF and SF during the provisioning stage.

example:
Get maximum IO event queues of the VF device::

  $ devlink port show pci/0000:06:00.0/2
  pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0 vfnum 1
      function:
          hw_addr 00:00:00:00:00:00 ipsec_packet disabled max_io_eqs 10

Set maximum IO event queues of the VF device::

  $ devlink port function set pci/0000:06:00.0/2 max_io_eqs 32

  $ devlink port show pci/0000:06:00.0/2
  pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0 vfnum 1
      function:
          hw_addr 00:00:00:00:00:00 ipsec_packet disabled max_io_eqs 32
Reviewed-by: default avatarJiri Pirko <jiri@nvidia.com>
Reviewed-by: default avatarShay Drory <shayd@nvidia.com>
Signed-off-by: default avatarParav Pandit <parav@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5af3e387
    • Eric Dumazet's avatar
      net: display more skb fields in skb_dump() · 4308811b
      Eric Dumazet authored 
      Print these additional fields in skb_dump() to ease debugging.

- mac_len
- csum_start (in v2, at Willem suggestion)
- csum_offset (in v2, at Willem suggestion)
- priority
- mark
- alloc_cpu
- vlan_all
- encapsulation
- inner_protocol
- inner_mac_header
- inner_network_header
- inner_transport_header
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Reviewed-by: default avatarWillem de Bruijn <willemb@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4308811b
    • David S. Miller's avatar
      Merge branch 'phy-cleanup-EEE' · 7812da81
      David S. Miller authored 
      Andrew Lunn says:

====================
net: Clean up some EEE code

Previous patches have reworked the API between phylib and MAC drivers
with respect to EEE, pushing most of the work into phylib. These two
patches rework two drivers to make use of the new API, and fix their
EEE implementation, so that EEE is configured in the MAC based on what
is actually negotiated during autoneg.

Compile tested only.
====================
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7812da81
    • Andrew Lunn's avatar
      net: lan743x: Fixup EEE · ef460a89
      Andrew Lunn authored 
      The enabling/disabling of EEE in the MAC should happen as a result of
auto negotiation. So move the enable/disable into
lan743x_phy_link_status_change() which gets called by phylib when
there is a change in link status.

lan743x_ethtool_set_eee() now just programs the hardware with the LTI
timer value, and passed everything else to phylib, so it can correctly
setup the PHY.

lan743x_ethtool_get_eee() relies on phylib doing most of the work, the
MAC driver just adds the LTI timer value.
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Reviewed-by: default avatarOleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ef460a89
    • Andrew Lunn's avatar
      net: usb: lan78xx: Fixup EEE · a00bbd15
      Andrew Lunn authored 
      The enabling/disabling of EEE in the MAC should happen as a result of
auto negotiation. So move the enable/disable into
lan783xx_phy_link_status_change() which gets called by phylib when
there is a change in link status.

lan78xx_set_eee() now just programs the hardware with the LPI
timer value, and passed everything else to phylib, so it can correctly
setup the PHY.

lan743x_get_eee() relies on phylib doing most of the work, the
MAC driver just adds the LPI timer value.

Call phy_support_eee() to indicate the MAC does actually support EEE.
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Reviewed-by: default avatarOleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a00bbd15
    • Jason Xing's avatar
      mptcp: add reset reason options in some places · 382c6001
      Jason Xing authored 
      The reason codes are handled in two ways nowadays (quoting Mat Martineau):
1. Sending in the MPTCP option on RST packets when there is no subflow
context available (these use subflow_add_reset_reason() and directly call
a TCP-level send_reset function)
2. The "normal" way via subflow->reset_reason. This will propagate to both
the outgoing reset packet and to a local path manager process via netlink
in mptcp_event_sub_closed()

RFC 8684 defines the skb reset reason behaviour which is not required
even though in some places:

    A host sends a TCP RST in order to close a subflow or reject
    an attempt to open a subflow (MP_JOIN). In order to let the
    receiving host know why a subflow is being closed or rejected,
    the TCP RST packet MAY include the MP_TCPRST option (Figure 15).
    The host MAY use this information to decide, for example, whether
    it tries to re-establish the subflow immediately, later, or never.

Since the commit dc87efdb ("mptcp: add mptcp reset option support")
introduced this feature about three years ago, we can fully use it.
There remains some places where we could insert reason into skb as
we can see in this patch.

Many thanks to Mat and Paolo for help:)
Signed-off-by: default avatarJason Xing <kernelxing@tencent.com>
Acked-by: default avatarPaolo Abeni <pabeni@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      382c6001
    • Guillaume Nault's avatar
      ipv4: Set scope explicitly in ip_route_output(). · ec20b283
      Guillaume Nault authored 
      Add a "scope" parameter to ip_route_output() so that callers don't have
to override the tos parameter with the RTO_ONLINK flag if they want a
local scope.

This will allow converting flowi4_tos to dscp_t in the future, thus
allowing static analysers to flag invalid interactions between
"tos" (the DSCP bits) and ECN.

Only three users ask for local scope (bonding, arp and atm). The others
continue to use RT_SCOPE_UNIVERSE. While there, add a comment to warn
users about the limitations of ip_route_output().
Signed-off-by: default avatarGuillaume Nault <gnault@redhat.com>
Acked-by: Leon Romanovsky <leonro@nvidia.com> # infiniband
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ec20b283
    • Venkat Venkatsubra's avatar
      ipvlan: handle NETDEV_DOWN event · 22978397
      Venkat Venkatsubra authored 
      In case of stacked devices, to help propagate the down
link state from the parent/root device (to this leaf device),
handle NETDEV_DOWN event like it is done now for NETDEV_UP.

In the below example, ens5 is the host interface which is the
parent of the ipvlan interface eth0 in the container.

Host:

[root@gkn-podman-x64 ~]# ip link set ens5 down
[root@gkn-podman-x64 ~]# ip -d link show dev ens5
3: ens5: <BROADCAST,MULTICAST> mtu 9000 qdisc mq state DOWN
      ...
[root@gkn-podman-x64 ~]#

Container:

[root@testnode-ol8 /]# ip -d link show dev eth0
2: eth0@if3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 state UNKNOWN
        ...
    ipvlan mode l2 bridge
        ...
[root@testnode-ol8 /]#

eth0's state continues to show up as UP even though ens5 is now DOWN.

For macvlan the handling of NETDEV_DOWN event was added in
commit 80fd2d6c ("macvlan: Change status when lower device goes down").
Reported-by: default avatarGia-Khanh Nguyen <gia-khanh.nguyen@oracle.com>
Signed-off-by: default avatarVenkat Venkatsubra <venkat.x.venkatsubra@oracle.com>
Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      22978397
    • Eric Dumazet's avatar
      af_packet: avoid a false positive warning in packet_setsockopt() · 86d43e2b
      Eric Dumazet authored 
      Although the code is correct, the following line

	copy_from_sockptr(&req_u.req, optval, len));

triggers this warning :

memcpy: detected field-spanning write (size 28) of single field "dst" at include/linux/sockptr.h:49 (size 16)

Refactor the code to be more explicit.
Reported-by: default avatarsyzbot <syzkaller@googlegroups.com>
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarWillem de Bruijn <willemb@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      86d43e2b
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