Patch "octeontx2-pf: mcs: Match macsec ethertype along with DMAC" has been added to the 6.1-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    octeontx2-pf: mcs: Match macsec ethertype along with DMAC

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:
     octeontx2-pf-mcs-match-macsec-ethertype-along-with-d.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 00fd410700acd24cbc0d8b72dc83ca8dda581547
Author: Subbaraya Sundeep <sbhatta@xxxxxxxxxxx>
Date:   Wed Apr 26 11:55:25 2023 +0530

    octeontx2-pf: mcs: Match macsec ethertype along with DMAC
    
    [ Upstream commit 57d00d4364f314485092667d2a48718985515deb ]
    
    On CN10KB silicon a single hardware macsec block is
    present and offloads macsec operations for all the
    ethernet LMACs. TCAM match with macsec ethertype 0x88e5
    alone at RX side is not sufficient to distinguish all the
    macsec interfaces created on top of netdevs. Hence append
    the DMAC of the macsec interface too. Otherwise the first
    created macsec interface only receives all the macsec traffic.
    
    Fixes: c54ffc73601c ("octeontx2-pf: mcs: Introduce MACSEC hardware offloading")
    Signed-off-by: Subbaraya Sundeep <sbhatta@xxxxxxxxxxx>
    Signed-off-by: Sunil Goutham <sgoutham@xxxxxxxxxxx>
    Signed-off-by: Geetha sowjanya <gakula@xxxxxxxxxxx>
    Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxx>
    Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k_macsec.c b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k_macsec.c
index 9ec5f38d38a84..f699209978fef 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k_macsec.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k_macsec.c
@@ -9,6 +9,7 @@
 #include <net/macsec.h>
 #include "otx2_common.h"
 
+#define MCS_TCAM0_MAC_DA_MASK		GENMASK_ULL(47, 0)
 #define MCS_TCAM0_MAC_SA_MASK		GENMASK_ULL(63, 48)
 #define MCS_TCAM1_MAC_SA_MASK		GENMASK_ULL(31, 0)
 #define MCS_TCAM1_ETYPE_MASK		GENMASK_ULL(47, 32)
@@ -237,8 +238,10 @@ static int cn10k_mcs_write_rx_flowid(struct otx2_nic *pfvf,
 				     struct cn10k_mcs_rxsc *rxsc, u8 hw_secy_id)
 {
 	struct macsec_rx_sc *sw_rx_sc = rxsc->sw_rxsc;
+	struct macsec_secy *secy = rxsc->sw_secy;
 	struct mcs_flowid_entry_write_req *req;
 	struct mbox *mbox = &pfvf->mbox;
+	u64 mac_da;
 	int ret;
 
 	mutex_lock(&mbox->lock);
@@ -249,11 +252,16 @@ static int cn10k_mcs_write_rx_flowid(struct otx2_nic *pfvf,
 		goto fail;
 	}
 
+	mac_da = ether_addr_to_u64(secy->netdev->dev_addr);
+
+	req->data[0] = FIELD_PREP(MCS_TCAM0_MAC_DA_MASK, mac_da);
+	req->mask[0] = ~0ULL;
+	req->mask[0] = ~MCS_TCAM0_MAC_DA_MASK;
+
 	req->data[1] = FIELD_PREP(MCS_TCAM1_ETYPE_MASK, ETH_P_MACSEC);
 	req->mask[1] = ~0ULL;
 	req->mask[1] &= ~MCS_TCAM1_ETYPE_MASK;
 
-	req->mask[0] = ~0ULL;
 	req->mask[2] = ~0ULL;
 	req->mask[3] = ~0ULL;