Merge branch 'hv_netvsc-cleanups'

Stephen Hemminger says:

====================
Hyper-V network driver cleanups.

The only new functionality is minor extensions to ethtool.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/hyperv/hyperv_net.h

@@ -84,8 +84,6 @@ struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */
 #define NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2   40
 
 #define ITAB_NUM 128
-#define HASH_KEYLEN NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2
-extern u8 netvsc_hash_key[];
 
 struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */
 	struct ndis_obj_header hdr;
@@ -175,7 +173,7 @@ struct rndis_device {
 struct rndis_message;
 struct netvsc_device;
 int netvsc_device_add(struct hv_device *device, void *additional_info);
-int netvsc_device_remove(struct hv_device *device);
+void netvsc_device_remove(struct hv_device *device);
 int netvsc_send(struct hv_device *device,
 		struct hv_netvsc_packet *packet,
 		struct rndis_message *rndis_msg,
@@ -654,6 +652,14 @@ struct netvsc_stats {
 	struct u64_stats_sync syncp;
 };
 
+struct netvsc_ethtool_stats {
+	unsigned long tx_scattered;
+	unsigned long tx_no_memory;
+	unsigned long tx_no_space;
+	unsigned long tx_too_big;
+	unsigned long tx_busy;
+};
+
 struct netvsc_reconfig {
 	struct list_head list;
 	u32 event;
@@ -683,6 +689,7 @@ struct net_device_context {
 	/* Ethtool settings */
 	u8 duplex;
 	u32 speed;
+	struct netvsc_ethtool_stats eth_stats;
 
 	/* the device is going away */
 	bool start_remove;

drivers/net/hyperv/rndis_filter.c

@@ -663,13 +663,14 @@ rndis_filter_set_offload_params(struct net_device *ndev,
 	return ret;
 }
 
-u8 netvsc_hash_key[HASH_KEYLEN] = {
+static const u8 netvsc_hash_key[] = {
 	0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2,
 	0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0,
 	0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4,
 	0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c,
 	0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa
 };
+#define HASH_KEYLEN ARRAY_SIZE(netvsc_hash_key)
 
 static int rndis_filter_set_rss_param(struct rndis_device *rdev, int num_queue)
 {
@@ -720,7 +721,6 @@ static int rndis_filter_set_rss_param(struct rndis_device *rdev, int num_queue)
 	for (i = 0; i < HASH_KEYLEN; i++)
 		keyp[i] = netvsc_hash_key[i];
 
-
 	ret = rndis_filter_send_request(rdev, request);
 	if (ret != 0)
 		goto cleanup;
@@ -738,7 +738,6 @@ static int rndis_filter_set_rss_param(struct rndis_device *rdev, int num_queue)
 	return ret;
 }
 
-
 static int rndis_filter_query_device_link_status(struct rndis_device *dev)
 {
 	u32 size = sizeof(u32);
@@ -814,7 +813,6 @@ int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter)
 	return ret;
 }
 
-
 static int rndis_filter_init_device(struct rndis_device *dev)
 {
 	struct rndis_request *request;
@@ -902,7 +900,6 @@ static void rndis_filter_halt_device(struct rndis_device *dev)
 
 	if (request)
 		put_rndis_request(dev, request);
-	return;
 }
 
 static int rndis_filter_open_device(struct rndis_device *dev)
@@ -1054,7 +1051,6 @@ int rndis_filter_device_add(struct hv_device *dev,
 	offloads.udp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;
 	offloads.lso_v2_ipv4 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED;
 
-
 	ret = rndis_filter_set_offload_params(net, &offloads);
 	if (ret)
 		goto err_dev_remv;
@@ -1180,7 +1176,6 @@ void rndis_filter_device_remove(struct hv_device *dev)
 	netvsc_device_remove(dev);
 }
 
-
 int rndis_filter_open(struct netvsc_device *nvdev)
 {
 	if (!nvdev)

include/linux/hyperv.h

@@ -1114,6 +1114,13 @@ int __must_check __vmbus_driver_register(struct hv_driver *hv_driver,
 					 const char *mod_name);
 void vmbus_driver_unregister(struct hv_driver *hv_driver);
 
+static inline const char *vmbus_dev_name(const struct hv_device *device_obj)
+{
+	const struct kobject *kobj = &device_obj->device.kobj;
+
+	return kobj->name;
+}
+
 void vmbus_hvsock_device_unregister(struct vmbus_channel *channel);
 
 int vmbus_allocate_mmio(struct resource **new, struct hv_device *device_obj,
@@ -1422,88 +1429,4 @@ static inline  bool hv_need_to_signal_on_read(struct hv_ring_buffer_info *rbi)
 	return false;
 }
 
-/*
- * An API to support in-place processing of incoming VMBUS packets.
- */
-#define VMBUS_PKT_TRAILER	8
-
-static inline struct vmpacket_descriptor *
-get_next_pkt_raw(struct vmbus_channel *channel)
-{
-	struct hv_ring_buffer_info *ring_info = &channel->inbound;
-	u32 read_loc = ring_info->priv_read_index;
-	void *ring_buffer = hv_get_ring_buffer(ring_info);
-	struct vmpacket_descriptor *cur_desc;
-	u32 packetlen;
-	u32 dsize = ring_info->ring_datasize;
-	u32 delta = read_loc - ring_info->ring_buffer->read_index;
-	u32 bytes_avail_toread = (hv_get_bytes_to_read(ring_info) - delta);
-
-	if (bytes_avail_toread < sizeof(struct vmpacket_descriptor))
-		return NULL;
-
-	if ((read_loc + sizeof(*cur_desc)) > dsize)
-		return NULL;
-
-	cur_desc = ring_buffer + read_loc;
-	packetlen = cur_desc->len8 << 3;
-
-	/*
-	 * If the packet under consideration is wrapping around,
-	 * return failure.
-	 */
-	if ((read_loc + packetlen + VMBUS_PKT_TRAILER) > (dsize - 1))
-		return NULL;
-
-	return cur_desc;
-}
-
-/*
- * A helper function to step through packets "in-place"
- * This API is to be called after each successful call
- * get_next_pkt_raw().
- */
-static inline void put_pkt_raw(struct vmbus_channel *channel,
-				struct vmpacket_descriptor *desc)
-{
-	struct hv_ring_buffer_info *ring_info = &channel->inbound;
-	u32 read_loc = ring_info->priv_read_index;
-	u32 packetlen = desc->len8 << 3;
-	u32 dsize = ring_info->ring_datasize;
-
-	if ((read_loc + packetlen + VMBUS_PKT_TRAILER) > dsize)
-		BUG();
-	/*
-	 * Include the packet trailer.
-	 */
-	ring_info->priv_read_index += packetlen + VMBUS_PKT_TRAILER;
-}
-
-/*
- * This call commits the read index and potentially signals the host.
- * Here is the pattern for using the "in-place" consumption APIs:
- *
- * while (get_next_pkt_raw() {
- *	process the packet "in-place";
- *	put_pkt_raw();
- * }
- * if (packets processed in place)
- *	commit_rd_index();
- */
-static inline void commit_rd_index(struct vmbus_channel *channel)
-{
-	struct hv_ring_buffer_info *ring_info = &channel->inbound;
-	/*
-	 * Make sure all reads are done before we update the read index since
-	 * the writer may start writing to the read area once the read index
-	 * is updated.
-	 */
-	virt_rmb();
-	ring_info->ring_buffer->read_index = ring_info->priv_read_index;
-
-	if (hv_need_to_signal_on_read(ring_info))
-		vmbus_set_event(channel);
-}
-
-
 #endif /* _HYPERV_H */