hv_netvsc: introduce netif-msg into netvsc module
1. Introduce netif-msg to netvsc to control debug logging output
and keep msg_enable in netvsc_device_context so that it is
kept persistently.
2. Only call dump_rndis_message() when NETIF_MSG_RX_ERR or above
is specified in netvsc module debug param.
In non-debug mode, in current code, dump_rndis_message() will not
dump anything but it still initialize some local variables and
process the switch logic which is unnecessary, especially in
high network throughput situation.
Signed-off-by: Simon Xiao <sixiao@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index a10b316..e55c8f4f 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -612,6 +612,15 @@
u32 count; /* counter of batched packets */
};
+/* The context of the netvsc device */
+struct net_device_context {
+ /* point back to our device context */
+ struct hv_device *device_ctx;
+ struct delayed_work dwork;
+ struct work_struct work;
+ u32 msg_enable; /* debug level */
+};
+
/* Per netvsc device */
struct netvsc_device {
struct hv_device *dev;
@@ -667,6 +676,9 @@
struct multi_send_data msd[NR_CPUS];
u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
u32 pkt_align; /* alignment bytes, e.g. 8 */
+
+ /* The net device context */
+ struct net_device_context *nd_ctx;
};
/* NdisInitialize message */