netxen: refactor transmit code
o move tx stuff into nx_host_tx_ring structure, this will
help managing multiple tx rings in future.
o sanitize some variable names
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
index 1165f53..2aa658d 100644
--- a/drivers/net/netxen/netxen_nic.h
+++ b/drivers/net/netxen/netxen_nic.h
@@ -74,10 +74,10 @@
(sizeof(struct netxen_rx_buffer) * rds_ring->num_desc)
#define STATUS_DESC_RINGSIZE(sds_ring) \
(sizeof(struct status_desc) * (sds_ring)->num_desc)
-#define TX_BUFF_RINGSIZE(adapter) \
- (sizeof(struct netxen_cmd_buffer) * adapter->num_txd)
-#define TX_DESC_RINGSIZE(adapter) \
- (sizeof(struct cmd_desc_type0) * adapter->num_txd)
+#define TX_BUFF_RINGSIZE(tx_ring) \
+ (sizeof(struct netxen_cmd_buffer) * tx_ring->num_desc)
+#define TX_DESC_RINGSIZE(tx_ring) \
+ (sizeof(struct cmd_desc_type0) * tx_ring->num_desc)
#define find_diff_among(a,b,range) ((a)<(b)?((b)-(a)):((b)+(range)-(a)))
@@ -639,7 +639,7 @@
*/
struct netxen_skb_frag {
u64 dma;
- ulong length;
+ u64 length;
};
#define _netxen_set_bits(config_word, start, bits, val) {\
@@ -704,9 +704,6 @@
u8 linkup;
u16 port_type;
u16 board_type;
- /* Address of cmd ring in Phantom */
- struct cmd_desc_type0 *cmd_desc_head;
- dma_addr_t cmd_desc_phys_addr;
};
#define MINIMUM_ETHERNET_FRAME_SIZE 64 /* With FCS */
@@ -752,14 +749,25 @@
struct napi_struct napi;
struct list_head free_list[NUM_RCV_DESC_RINGS];
- u16 clean_tx;
- u16 post_rxd;
int irq;
dma_addr_t phys_addr;
char name[IFNAMSIZ+4];
};
+struct nx_host_tx_ring {
+ u32 producer;
+ __le32 *hw_consumer;
+ u32 sw_consumer;
+ u32 crb_cmd_producer;
+ u32 crb_cmd_consumer;
+ u32 num_desc;
+
+ struct netxen_cmd_buffer *cmd_buf_arr;
+ struct cmd_desc_type0 *desc_head;
+ dma_addr_t phys_addr;
+};
+
/*
* Receive context. There is one such structure per instance of the
* receive processing. Any state information that is relevant to
@@ -1152,11 +1160,6 @@
rwlock_t adapter_lock;
spinlock_t tx_clean_lock;
- u32 cmd_producer;
- u32 last_cmd_consumer;
- u32 crb_addr_cmd_producer;
- u32 crb_addr_cmd_consumer;
- __le32 *cmd_consumer;
u32 num_txd;
u32 num_rxd;
@@ -1191,13 +1194,8 @@
struct netxen_adapter_stats stats;
- struct netxen_cmd_buffer *cmd_buf_arr; /* Command buffers for xmit */
-
- /*
- * Receive instances. These can be either one per port,
- * or one per peg, etc.
- */
struct netxen_recv_context recv_ctx;
+ struct nx_host_tx_ring tx_ring;
/* Context interface shared between card and host */
struct netxen_ring_ctx *ctx_desc;
@@ -1409,7 +1407,7 @@
struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev);
void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
- uint32_t crb_producer);
+ struct nx_host_tx_ring *tx_ring, uint32_t crb_producer);
/*
* NetXen Board information