#define XGBE_TX_MAX_BUF_SIZE (0x3fff & ~(64 - 1))
+/* Descriptors required for maximum contigous TSO/GSO packet */
+#define XGBE_TX_MAX_SPLIT ((GSO_MAX_SIZE / XGBE_TX_MAX_BUF_SIZE) + 1)
+
+/* Maximum possible descriptors needed for an SKB:
+ * - Maximum number of SKB frags
+ * - Maximum descriptors for contiguous TSO/GSO packet
+ * - Possible context descriptor
+ * - Possible TSO header descriptor
+ */
+#define XGBE_TX_MAX_DESCS (MAX_SKB_FRAGS + XGBE_TX_MAX_SPLIT + 2)
+
#define XGBE_RX_MIN_BUF_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
#define XGBE_RX_BUF_ALIGN 64
#define XGBE_SKB_ALLOC_SIZE 256
#define XGBE_MAX_DMA_CHANNELS 16
#define XGBE_MAX_QUEUES 16
+#define XGBE_DMA_STOP_TIMEOUT 5
/* DMA cache settings - Outer sharable, write-back, write-allocate */
#define XGBE_DMA_OS_AXDOMAIN 0x2
struct xgbe_prv_data;
struct xgbe_packet_data {
+ struct sk_buff *skb;
+
unsigned int attributes;
unsigned int errors;
u32 rss_hash;
enum pkt_hash_types rss_hash_type;
+
+ unsigned int tx_packets;
+ unsigned int tx_bytes;
};
/* Common Rx and Tx descriptor mapping */
struct xgbe_ring_desc {
- u32 desc0;
- u32 desc1;
- u32 desc2;
- u32 desc3;
+ __le32 desc0;
+ __le32 desc1;
+ __le32 desc2;
+ __le32 desc3;
};
/* Page allocation related values */
unsigned int dma_len;
};
+/* Tx-related ring data */
+struct xgbe_tx_ring_data {
+ unsigned int packets; /* BQL packet count */
+ unsigned int bytes; /* BQL byte count */
+};
+
+/* Rx-related ring data */
+struct xgbe_rx_ring_data {
+ struct xgbe_buffer_data hdr; /* Header locations */
+ struct xgbe_buffer_data buf; /* Payload locations */
+
+ unsigned short hdr_len; /* Length of received header */
+ unsigned short len; /* Length of received packet */
+};
+
/* Structure used to hold information related to the descriptor
* and the packet associated with the descriptor (always use
* use the XGBE_GET_DESC_DATA macro to access this data from the ring)
struct sk_buff *skb; /* Virtual address of SKB */
dma_addr_t skb_dma; /* DMA address of SKB data */
unsigned int skb_dma_len; /* Length of SKB DMA area */
- unsigned int tso_header; /* TSO header indicator */
-
- struct xgbe_buffer_data rx_hdr; /* Header locations */
- struct xgbe_buffer_data rx_buf; /* Payload locations */
- unsigned short hdr_len; /* Length of received header */
- unsigned short len; /* Length of received Rx packet */
+ struct xgbe_tx_ring_data tx; /* Tx-related data */
+ struct xgbe_rx_ring_data rx; /* Rx-related data */
unsigned int interrupt; /* Interrupt indicator */
union {
struct {
unsigned int queue_stopped;
+ unsigned int xmit_more;
unsigned short cur_mss;
unsigned short cur_vlan_ctag;
} tx;
/* Per channel interrupt irq number */
int dma_irq;
+ char dma_irq_name[IFNAMSIZ + 32];
/* Netdev related settings */
struct napi_struct napi;
void (*tx_desc_reset)(struct xgbe_ring_data *);
int (*is_last_desc)(struct xgbe_ring_desc *);
int (*is_context_desc)(struct xgbe_ring_desc *);
+ void (*tx_start_xmit)(struct xgbe_channel *, struct xgbe_ring *);
/* For FLOW ctrl */
int (*config_tx_flow_control)(struct xgbe_prv_data *);
/* For Receive Side Scaling */
int (*enable_rss)(struct xgbe_prv_data *);
int (*disable_rss)(struct xgbe_prv_data *);
+ int (*set_rss_hash_key)(struct xgbe_prv_data *, const u8 *);
+ int (*set_rss_lookup_table)(struct xgbe_prv_data *, const u32 *);
};
struct xgbe_desc_if {