FAILED: patch "[PATCH] macsec: Enable devices to advertise whether they update" failed to apply to 6.6-stable tree

FAILED: patch "[PATCH] macsec: Enable devices to advertise whether they update" failed to apply to 6.6-stable tree

[gregkh]

The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x 475747a19316b08e856c666a20503e73d7ed67ed
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2024042909-drab-untapped-78a4@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..

Possible dependencies:

475747a19316 ("macsec: Enable devices to advertise whether they update sk_buff md_dst during offloads")
a73d8779d61a ("net: macsec: introduce mdo_insert_tx_tag")
eb97b9bd38f9 ("net: macsec: documentation for macsec_context and macsec_ops")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 475747a19316b08e856c666a20503e73d7ed67ed Mon Sep 17 00:00:00 2001
From: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Date: Tue, 23 Apr 2024 11:13:02 -0700
Subject: [PATCH] macsec: Enable devices to advertise whether they update
 sk_buff md_dst during offloads

Cannot know whether a Rx skb missing md_dst is intended for MACsec or not
without knowing whether the device is able to update this field during an
offload. Assume that an offload to a MACsec device cannot support updating
md_dst by default. Capable devices can advertise that they do indicate that
an skb is related to a MACsec offloaded packet using the md_dst.

Cc: Sabrina Dubroca <sd@queasysnail.net>
Cc: stable@vger.kernel.org
Fixes: 860ead89b851 ("net/macsec: Add MACsec skb_metadata_dst Rx Data path support")
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: Benjamin Poirier <bpoirier@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://lore.kernel.org/r/20240423181319.115860-2-rrameshbabu@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/net/macsec.h b/include/net/macsec.h
index dbd22180cc5c..de216cbc6b05 100644
--- a/include/net/macsec.h
+++ b/include/net/macsec.h
@@ -321,6 +321,7 @@ struct macsec_context {
  *	for the TX tag
  * @needed_tailroom: number of bytes reserved at the end of the sk_buff for the
  *	TX tag
+ * @rx_uses_md_dst: whether MACsec device offload supports sk_buff md_dst
  */
 struct macsec_ops {
 	/* Device wide */
@@ -352,6 +353,7 @@ struct macsec_ops {
 				 struct sk_buff *skb);
 	unsigned int needed_headroom;
 	unsigned int needed_tailroom;
+	bool rx_uses_md_dst;
 };
 
 void macsec_pn_wrapped(struct macsec_secy *secy, struct macsec_tx_sa *tx_sa);