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alx: extend data structures for multi queue support 

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.regnery@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tobias Regnery 2016-11-15 12:43:09 +01:00 committed by David S. Miller
parent 8c2a4c8efb
commit bccffcf715
1 changed files with 31 additions and 0 deletions
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31
drivers/net/ethernet/atheros/alx/alx.h
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@ -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;