[PATCH net-next 2/9] alx: extend data structures for multi queue support

[Tobias Regnery]

Extend the driver data structures to be able to handle multiple queues.

Based on the downstream driver at github.com/qca/alx

Signed-off-by: Tobias Regnery <tobias.regn...@gmail.com>
---
 drivers/net/ethernet/atheros/alx/alx.h | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/drivers/net/ethernet/atheros/alx/alx.h 
b/drivers/net/ethernet/atheros/alx/alx.h
index 6cac919272ea..0859053525de 100644
--- a/drivers/net/ethernet/atheros/alx/alx.h
+++ b/drivers/net/ethernet/atheros/alx/alx.h
@@ -50,6 +50,10 @@ struct alx_buffer {
 };
 
 struct alx_rx_queue {
+       struct net_device *netdev;
+       struct device *dev;
+       struct alx_napi *np;
+
        struct alx_rrd *rrd;
        dma_addr_t rrd_dma;
 
@@ -58,16 +62,26 @@ struct alx_rx_queue {
 
        struct alx_buffer *bufs;
 
+       u16 count;
        u16 write_idx, read_idx;
        u16 rrd_read_idx;
+       u16 queue_idx;
 };
 #define ALX_RX_ALLOC_THRESH    32
 
 struct alx_tx_queue {
+       struct net_device *netdev;
+       struct device *dev;
+
        struct alx_txd *tpd;
        dma_addr_t tpd_dma;
+
        struct alx_buffer *bufs;
+
+       u16 count;
        u16 write_idx, read_idx;
+       u16 queue_idx;
+       u16 p_reg, c_reg;
 };
 
 #define ALX_DEFAULT_TX_WORK 128
@@ -76,6 +90,18 @@ enum alx_device_quirks {
        ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG = BIT(0),
 };
 
+struct alx_napi {
+       struct napi_struct      napi;
+       struct alx_priv         *alx;
+       struct alx_rx_queue     *rxq;
+       struct alx_tx_queue     *txq;
+       int                     vec_idx;
+       u32                     vec_mask;
+       char                    irq_lbl[IFNAMSIZ + 8];
+};
+
+#define ALX_MAX_NAPIS 8
+
 #define ALX_FLAG_USING_MSIX    BIT(0)
 #define ALX_FLAG_USING_MSI     BIT(1)
 
@@ -96,6 +122,11 @@ struct alx_priv {
                unsigned int size;
        } descmem;
 
+       struct alx_napi *qnapi[ALX_MAX_NAPIS];
+       int num_txq;
+       int num_rxq;
+       int num_napi;
+
        /* protect int_mask updates */
        spinlock_t irq_lock;
        u32 int_mask;
-- 
2.7.4