qlcnic: add driver debug support

Add debug print in driver, can be tuned by ethtool msg level
callback.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h
index 87cd1a7ef9ca..68687e24aae2 100644
--- a/drivers/net/qlcnic/qlcnic.h
+++ b/drivers/net/qlcnic/qlcnic.h
@@ -961,6 +961,7 @@ struct qlcnic_adapter {
         u8 reset_ack_timeo;
         u8 dev_init_timeo;
         u8 rsrd1;
+        u16 msg_enable;
 
         u8 mac_addr[ETH_ALEN];
 
@@ -1135,4 +1136,11 @@ static inline u32 qlcnic_tx_avail(struct qlcnic_host_tx_ring *tx_ring)
 
 extern const struct ethtool_ops qlcnic_ethtool_ops;
 
+#define QLCDB(adapter, lvl, _fmt, _args...) do {        \
+        if (NETIF_MSG_##lvl & adapter->msg_enable)      \
+                printk(KERN_INFO "%s: %s: " _fmt,       \
+                         dev_name(&adapter->pdev->dev), \
+                        __func__, ##_args);             \
+        } while (0)
+
 #endif                          /* __QLCNIC_H_ */