[PATCH net-next 12/13] mlxsw: pci: Retrieve mirror reason from CQE during receive

[Ido Schimmel]

From: Ido Schimmel <ido...@mellanox.com>

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 <j...@mellanox.com>
Signed-off-by: Petr Machata <pe...@mellanox.com>
Signed-off-by: Ido Schimmel <ido...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/core.h | 1 +
 drivers/net/ethernet/mellanox/mlxsw/pci.c  | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h 
b/drivers/net/ethernet/mellanox/mlxsw/core.h
index 7d6b0a232789..c736b8673791 100644
--- 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;
 };
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c 
b/drivers/net/ethernet/mellanox/mlxsw/pci.c
index c04ec1a92826..1c64b03ff48e 100644
--- 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(struct mlxsw_pci 
*mlxsw_pci,
 {
        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(struct mlxsw_pci 
*mlxsw_pci,
                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);
-- 
2.26.2