linux.git/Documentation/networking/device_drivers, branch v6.5

Merge tag 'net-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2023-07-05T22:44:45+00:00

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bluetooth, bpf and wireguard.

  Current release - regressions:

   - nvme-tcp: fix comma-related oops after sendpage changes

  Current release - new code bugs:

   - ptp: make max_phase_adjustment sysfs device attribute invisible
     when not supported

  Previous releases - regressions:

   - sctp: fix potential deadlock on &net->sctp.addr_wq_lock

   - mptcp:
      - ensure subflow is unhashed before cleaning the backlog
      - do not rely on implicit state check in mptcp_listen()

  Previous releases - always broken:

   - net: fix net_dev_start_xmit trace event vs skb_transport_offset()

   - Bluetooth:
      - fix use-bdaddr-property quirk
      - L2CAP: fix multiple UaFs
      - ISO: use hci_sync for setting CIG parameters
      - hci_event: fix Set CIG Parameters error status handling
      - hci_event: fix parsing of CIS Established Event
      - MGMT: fix marking SCAN_RSP as not connectable

   - wireguard: queuing: use saner cpu selection wrapping

   - sched: act_ipt: various bug fixes for iptables <> TC interactions

   - sched: act_pedit: add size check for TCA_PEDIT_PARMS_EX

   - dsa: fixes for receiving PTP packets with 8021q and sja1105 tagging

   - eth: sfc: fix null-deref in devlink port without MAE access

   - eth: ibmvnic: do not reset dql stats on NON_FATAL err

  Misc:

   - xsk: honor SO_BINDTODEVICE on bind"

* tag 'net-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (70 commits)
  nfp: clean mc addresses in application firmware when closing port
  selftests: mptcp: pm_nl_ctl: fix 32-bit support
  selftests: mptcp: depend on SYN_COOKIES
  selftests: mptcp: userspace_pm: report errors with 'remove' tests
  selftests: mptcp: userspace_pm: use correct server port
  selftests: mptcp: sockopt: return error if wrong mark
  selftests: mptcp: sockopt: use 'iptables-legacy' if available
  selftests: mptcp: connect: fail if nft supposed to work
  mptcp: do not rely on implicit state check in mptcp_listen()
  mptcp: ensure subflow is unhashed before cleaning the backlog
  s390/qeth: Fix vipa deletion
  octeontx-af: fix hardware timestamp configuration
  net: dsa: sja1105: always enable the send_meta options
  net: dsa: tag_sja1105: fix MAC DA patching from meta frames
  net: Replace strlcpy with strscpy
  pptp: Fix fib lookup calls.
  mlxsw: spectrum_router: Fix an IS_ERR() vs NULL check
  net/sched: act_pedit: Add size check for TCA_PEDIT_PARMS_EX
  xsk: Honor SO_BINDTODEVICE on bind
  ptp: Make max_phase_adjustment sysfs device attribute invisible when not supported
  ...

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2023-07-03T22:38:26+00:00

Pull virtio updates from Michael Tsirkin:

 - resume support in vdpa/solidrun

 - structure size optimizations in virtio_pci

 - new pds_vdpa driver

 - immediate initialization mechanism for vdpa/ifcvf

 - interrupt bypass for vdpa/mlx5

 - multiple worker support for vhost

 - viirtio net in Intel F2000X-PL support for vdpa/ifcvf

 - fixes, cleanups all over the place

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (48 commits)
  vhost: Make parameter name match of vhost_get_vq_desc()
  vduse: fix NULL pointer dereference
  vhost: Allow worker switching while work is queueing
  vhost_scsi: add support for worker ioctls
  vhost: allow userspace to create workers
  vhost: replace single worker pointer with xarray
  vhost: add helper to parse userspace vring state/file
  vhost: remove vhost_work_queue
  vhost_scsi: flush IO vqs then send TMF rsp
  vhost_scsi: convert to vhost_vq_work_queue
  vhost_scsi: make SCSI cmd completion per vq
  vhost_sock: convert to vhost_vq_work_queue
  vhost: convert poll work to be vq based
  vhost: take worker or vq for flushing
  vhost: take worker or vq instead of dev for queueing
  vhost, vhost_net: add helper to check if vq has work
  vhost: add vhost_worker pointer to vhost_virtqueue
  vhost: dynamically allocate vhost_worker
  vhost: create worker at end of vhost_dev_set_owner
  virtio_bt: call scheduler when we free unused buffs
  ...

docs: networking: Update codeaurora references for rmnet

2023-07-01T12:17:56+00:00

source.codeaurora.org is no longer accessible and so the reference link
in the documentation is not useful. Use iproute2 instead as it has a
rmnet module for configuration.

Fixes: ceed73a2cf4a ("drivers: net: ethernet: qualcomm: rmnet: Initial implementation")
Signed-off-by: Sean Tranchetti 
Signed-off-by: Subash Abhinov Kasiviswanathan 
Reviewed-by: Simon Horman 
Signed-off-by: David S. Miller

pds_vdpa: pds_vdps.rst and Kconfig

2023-06-27T14:47:09+00:00

Add the documentation and Kconfig entry for pds_vdpa driver.

Signed-off-by: Shannon Nelson 
Acked-by: Jason Wang 
Message-Id: <20230519215632.12343-12-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin

net/mlx5: Fix SFs kernel documentation error

2023-06-23T19:27:32+00:00

Indent SFs probe code example in order to fix the below error:

Documentation/networking/device_drivers/ethernet/mellanox/mlx5/switchdev.rst:57: ERROR: Unexpected indentation.
Documentation/networking/device_drivers/ethernet/mellanox/mlx5/switchdev.rst:61: ERROR: Unexpected indentation.

Fixes: e71383fb9cd1 ("net/mlx5: Light probe local SFs")
Signed-off-by: Shay Drory 
Reviewed-by: Rahul Rameshbabu 
Signed-off-by: Saeed Mahameed 
Reviewed-by: Moshe Shemesh 
Reviewed-by: Automatic Verification 
Reviewed-by: Gal Pressman

net: ena: Fix rst format issues in readme

2023-06-22T05:43:13+00:00

This patch fixes a warning in the ena documentation
file identified by the kernel automatic tools.
The patch also adds a missing newline between
sections.

Signed-off-by: David Arinzon 
Reported-by: kernel test robot 
Closes: https://lore.kernel.org/oe-kbuild-all/202306171804.U7E92zoE-lkp@intel.com/
Reviewed-by: Simon Horman 
Link: https://lore.kernel.org/r/20230620133544.32584-1-darinzon@amazon.com
Signed-off-by: Jakub Kicinski

net/mlx5e: Add local loopback counter to vport stats

2023-06-16T19:02:08+00:00

Add counter for number of unicast, multicast and broadcast packets/
octets that were loopback.

Signed-off-by: Or Har-Toov 
Reviewed-by: Avihai Horon 
Reviewed-by: Leon Romanovsky 
Signed-off-by: Saeed Mahameed

net: ena: Add dynamic recycling mechanism for rx buffers

2023-06-16T05:45:47+00:00

The current implementation allocates page-sized rx buffers.
As traffic may consist of different types and sizes of packets,
in various cases, buffers are not fully used.

This change (Dynamic RX Buffers - DRB) uses part of the allocated rx
page needed for the incoming packet, and returns the rest of the
unused page to be used again as an rx buffer for future packets.
A threshold of 2K for unused space has been set in order to declare
whether the remainder of the page can be reused again as an rx buffer.

As a page may be reused, dma_sync_single_for_cpu() is added in order
to sync the memory to the CPU side after it was owned by the HW.
In addition, when the rx page can no longer be reused, it is being
unmapped using dma_page_unmap(), which implicitly syncs and then
unmaps the entire page. In case the kernel still handles the skbs
pointing to the previous buffers from that rx page, it may access
garbage pointers, caused by the implicit sync overwriting them.
The implicit dma sync is removed by replacing dma_page_unmap() with
dma_unmap_page_attrs() with DMA_ATTR_SKIP_CPU_SYNC flag.

The functionality is disabled for XDP traffic to avoid handling
several descriptors per packet.

Signed-off-by: Arthur Kiyanovski 
Signed-off-by: Shay Agroskin 
Signed-off-by: David Arinzon 
Link: https://lore.kernel.org/r/20230612121448.28829-1-darinzon@amazon.com
Signed-off-by: Jakub Kicinski

net/mlx5: Light probe local SFs

2023-06-10T01:40:53+00:00

In case user wants to configure the SFs, for example: to use only vdpa
functionality, he needs to fully probe a SF, configure what he wants,
and afterward reload the SF.

In order to save the time of the reload, local SFs will probe without
any auxiliary sub-device, so that the SFs can be configured prior to
its full probe.

The defaults of the enable_* devlink params of these SFs are set to
false.

Usage example:
Create SF:
$ devlink port add pci/0000:08:00.0 flavour pcisf pfnum 0 sfnum 11
$ devlink port function set pci/0000:08:00.0/32768 \
               hw_addr 00:00:00:00:00:11 state active

Enable ETH auxiliary device:
$ devlink dev param set auxiliary/mlx5_core.sf.1 \
              name enable_eth value true cmode driverinit

Now, in order to fully probe the SF, use devlink reload:
$ devlink dev reload auxiliary/mlx5_core.sf.1

At this point the user have SF devlink instance with auxiliary device
for the Ethernet functionality only.

Signed-off-by: Shay Drory 
Reviewed-by: Moshe Shemesh 
Signed-off-by: Saeed Mahameed

net/mlx5e: Expose catastrophic steering error counters

2023-06-07T21:00:43+00:00

Add generated_pkt_steering_fail and handled_pkt_steering_fail to devlink
heatlth reporter.
generated_pkt_steering_fail indicates the number of packets dropped due to
illegal steering operation within the vport steering domain.
handled_pkt_steering_fail indicates the number of packets dropped due to
illegal steering operation, originated by the vport.

Also, update devlink reporter functionality documentation with the newly
exposed counters.

Signed-off-by: Lama Kayal 
Reviewed-by: Rahul Rameshbabu 
Signed-off-by: Saeed Mahameed