diff options
| author | Saeed Mahameed <saeedm@nvidia.com> | 2025-11-07 23:04:02 -0800 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-11-11 13:17:53 +0100 |
| commit | 0e535824d0bcf7c9bb0532d902283c31c78cd6f3 (patch) | |
| tree | fc5b7d1620bc9f41c237ccc5de5a20cd8bd0d54c /include/uapi/linux/devlink.h | |
| parent | 8180c4fa5444247c3fcecc98c75d53cdb801604c (diff) | |
devlink: Introduce switchdev_inactive eswitch mode
Adds DEVLINK_ESWITCH_MODE_SWITCHDEV_INACTIVE attribute to UAPI and
documentation.
Before having traffic flow through an eswitch, a user may want to have the
ability to block traffic towards the FDB until FDB is fully programmed and
the user is ready to send traffic to it. For example: when two eswitches
are present for vports in a multi-PF setup, one eswitch may take over the
traffic from the other when the user chooses.
Before this take over, a user may want to first program the inactive
eswitch and then once ready redirect traffic to this new eswitch.
switchdev modes transition semantics:
legacy->switchdev_inactive: Create switchdev mode normally, traffic not
allowed to flow yet.
switchdev_inactive->switchdev: Enable traffic to flow.
switchdev->switchdev_inactive: Block traffic on the FDB, FDB and
representros state and content is preserved.
When eswitch is configured to this mode, traffic is ignored/dropped on
this eswitch FDB, while current configuration is kept, e.g FDB rules and
netdev representros are kept available, FDB programming is allowed.
Example:
# start inactive switchdev
devlink dev eswitch set pci/0000:08:00.1 mode switchdev_inactive
# setup TC rules, representors etc ..
# activate
devlink dev eswitch set pci/0000:08:00.1 mode switchdev
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20251108070404.1551708-2-saeed@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'include/uapi/linux/devlink.h')
| -rw-r--r-- | include/uapi/linux/devlink.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index bcad11a787a5..157f11d3fb72 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -181,6 +181,7 @@ enum devlink_sb_threshold_type { enum devlink_eswitch_mode { DEVLINK_ESWITCH_MODE_LEGACY, DEVLINK_ESWITCH_MODE_SWITCHDEV, + DEVLINK_ESWITCH_MODE_SWITCHDEV_INACTIVE, }; enum devlink_eswitch_inline_mode { |