From: Ido Schimmel <idosch@mellanox.com>
Date: Tue, 14 Jul 2020 17:21:05 +0300
Subject: mlxsw: pci: Retrieve mirror reason from CQE during receive
Patch-mainline: v5.9-rc1
Git-commit: eacc86ec510b9ad64d6dddf3a9924c29d1c4f57b
References: bsc#1176774

In case the mirror reason is valid, retrieve it into the Rx information
so that it could be used during listener lookup in a later patch.

Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlxsw/core.h |    1 +
 drivers/net/ethernet/mellanox/mlxsw/pci.c  |    6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlxsw/core.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.h
@@ -176,6 +176,7 @@ struct mlxsw_rx_info {
 		u16 lag_id;
 	} u;
 	u8 lag_port_index;
+	u8 mirror_reason;
 	int trap_id;
 };
 
--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -547,9 +547,9 @@ static void mlxsw_pci_cqe_rdq_handle(str
 {
 	struct pci_dev *pdev = mlxsw_pci->pdev;
 	struct mlxsw_pci_queue_elem_info *elem_info;
+	struct mlxsw_rx_info rx_info = {};
 	char *wqe;
 	struct sk_buff *skb;
-	struct mlxsw_rx_info rx_info;
 	u16 byte_count;
 	int err;
 
@@ -582,6 +582,10 @@ static void mlxsw_pci_cqe_rdq_handle(str
 		if (mlxsw_pci->max_cqe_ver >= MLXSW_PCI_CQE_V2)
 			cookie_index = mlxsw_pci_cqe2_user_def_val_orig_pkt_len_get(cqe);
 		mlxsw_skb_cb(skb)->cookie_index = cookie_index;
+	} else if (rx_info.trap_id >= MLXSW_TRAP_ID_MIRROR_SESSION0 &&
+		   rx_info.trap_id <= MLXSW_TRAP_ID_MIRROR_SESSION7 &&
+		   mlxsw_pci->max_cqe_ver >= MLXSW_PCI_CQE_V2) {
+		rx_info.mirror_reason = mlxsw_pci_cqe2_mirror_reason_get(cqe);
 	}
 
 	byte_count = mlxsw_pci_cqe_byte_count_get(cqe);