This is a note to let you know that I've just added the patch titled
ixgbevf: stop attempting IPSEC offload on Mailbox API 1.5
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ixgbevf-stop-attempting-ipsec-offload-on-mailbox-api.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3787ca4fbcf8be380614dd28bf45c942219b1841
Author: Jacob Keller <jacob.e.keller@xxxxxxxxx>
Date: Fri Nov 1 16:05:42 2024 -0700
ixgbevf: stop attempting IPSEC offload on Mailbox API 1.5
[ Upstream commit d0725312adf5a803de8f621bd1b12ba7a6464a29 ]
Commit 339f28964147 ("ixgbevf: Add support for new mailbox communication
between PF and VF") added support for v1.5 of the PF to VF mailbox
communication API. This commit mistakenly enabled IPSEC offload for API
v1.5.
No implementation of the v1.5 API has support for IPSEC offload. This
offload is only supported by the Linux PF as mailbox API v1.4. In fact, the
v1.5 API is not implemented in any Linux PF.
Attempting to enable IPSEC offload on a PF which supports v1.5 API will not
work. Only the Linux upstream ixgbe and ixgbevf support IPSEC offload, and
only as part of the v1.4 API.
Fix the ixgbevf Linux driver to stop attempting IPSEC offload when
the mailbox API does not support it.
The existing API design choice makes it difficult to support future API
versions, as other non-Linux hosts do not implement IPSEC offload. If we
add support for v1.5 to the Linux PF, then we lose support for IPSEC
offload.
A full solution likely requires a new mailbox API with a proper negotiation
to check that IPSEC is actually supported by the host.
Fixes: 339f28964147 ("ixgbevf: Add support for new mailbox communication between PF and VF")
Signed-off-by: Jacob Keller <jacob.e.keller@xxxxxxxxx>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@xxxxxxxxx>
Tested-by: Rafal Romanowski <rafal.romanowski@xxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/intel/ixgbevf/ipsec.c b/drivers/net/ethernet/intel/ixgbevf/ipsec.c
index 9984ebc62d787..74c121d7abc90 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ipsec.c
@@ -623,7 +623,6 @@ void ixgbevf_init_ipsec_offload(struct ixgbevf_adapter *adapter)
switch (adapter->hw.api_version) {
case ixgbe_mbox_api_14:
- case ixgbe_mbox_api_15:
break;
default:
return;
