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  1. 23 Oct, 2023 24 commits
  3. 19 Oct, 2023 13 commits
  5. 18 Oct, 2023 3 commits
    • Jakub Kicinski's avatar
      Merge tag 'mlx5-updates-2023-10-10' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux · ee2a35fe
      Jakub Kicinski authored 
      Saeed Mahameed says:

====================
mlx5-updates-2023-10-10

1) Adham Faris, Increase max supported channels number to 256

2) Leon Romanovsky, Allow IPsec soft/hard limits in bytes

3) Shay Drory, Replace global mlx5_intf_lock with
   HCA devcom component lock

4) Wei Zhang, Optimize SF creation flow

During SF creation, HCA state gets changed from INVALID to
IN_USE step by step. Accordingly, FW sends vhca event to
driver to inform about this state change asynchronously.
Each vhca event is critical because all related SW/FW
operations are triggered by it.

Currently there is only a single mlx5 general event handler
which not only handles vhca event but many other events.
This incurs huge bottleneck because all events are forced
to be handled in serial manner.

Moreover, all SFs share same table_lock which inevitably
impacts each other when they are created in parallel.

This series will solve this issue by:

1. A dedicated vhca event handler is introduced to eliminate
   the mutual impact with other mlx5 events.
2. Max FW threads work queues are employed in the vhca event
   handler to fully utilize FW capability.
3. Redesign SF active work logic to completely remove
   table_lock.

With above optimization, SF creation time is reduced by 25%,
i.e. from 80s to 60s when creating 100 SFs.

Patches summary:

Patch 1 - implement dedicated vhca event handler with max FW
          cmd threads of work queues.
Patch 2 - remove table_lock by redesigning SF active work
          logic.

* tag 'mlx5-updates-2023-10-10' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
  net/mlx5e: Allow IPsec soft/hard limits in bytes
  net/mlx5e: Increase max supported channels number to 256
  net/mlx5e: Preparations for supporting larger number of channels
  net/mlx5e: Refactor mlx5e_rss_init() and mlx5e_rss_free() API's
  net/mlx5e: Refactor mlx5e_rss_set_rxfh() and mlx5e_rss_get_rxfh()
  net/mlx5e: Refactor rx_res_init() and rx_res_free() APIs
  net/mlx5e: Use PTR_ERR_OR_ZERO() to simplify code
  net/mlx5: Use PTR_ERR_OR_ZERO() to simplify code
  net/mlx5: fix config name in Kconfig parameter documentation
  net/mlx5: Remove unused declaration
  net/mlx5: Replace global mlx5_intf_lock with HCA devcom component lock
  net/mlx5: Refactor LAG peer device lookout bus logic to mlx5 devcom
  net/mlx5: Avoid false positive lockdep warning by adding lock_class_key
  net/mlx5: Redesign SF active work to remove table_lock
  net/mlx5: Parallelize vhca event handling
====================

Link: https://lore.kernel.org/r/20231014171908.290428-1-saeed@kernel.orgSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      ee2a35fe
    • Justin Stitt's avatar
      hamradio: replace deprecated strncpy with strscpy_pad · d4b14c1d
      Justin Stitt authored 
      strncpy() is deprecated for use on NUL-terminated destination strings
[1] and as such we should prefer more robust and less ambiguous string
interfaces.

We expect both hi.data.modename and hi.data.drivername to be
NUL-terminated based on its usage with sprintf:
|       sprintf(hi.data.modename, "%sclk,%smodem,fclk=%d,bps=%d%s",
|               bc->cfg.intclk ? "int" : "ext",
|               bc->cfg.extmodem ? "ext" : "int", bc->cfg.fclk, bc->cfg.bps,
|               bc->cfg.loopback ? ",loopback" : "");

Note that this data is copied out to userspace with:
|       if (copy_to_user(data, &hi, sizeof(hi)))
... however, the data was also copied FROM the user here:
|       if (copy_from_user(&hi, data, sizeof(hi)))

Considering the above, a suitable replacement is strscpy_pad() as it
guarantees NUL-termination on the destination buffer while also
NUL-padding (which is good+wanted behavior when copying data to
userspace).

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
Link: https://github.com/KSPP/linux/issues/90Signed-off-by: default avatarJustin Stitt <justinstitt@google.com>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20231016-strncpy-drivers-net-hamradio-baycom_epp-c-v2-1-39f72a72de30@google.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      d4b14c1d
    • Jakub Kicinski's avatar
      docs: netlink: clean up after deprecating version · 5294df64
      Jakub Kicinski authored 
      Jiri moved version to legacy specs in commit 0f07415e ("netlink:
specs: don't allow version to be specified for genetlink").
Update the documentation.
Reviewed-by: default avatarJiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20231016214540.1822392-1-kuba@kernel.orgSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      5294df64
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