netvsc: optimize receive path
Do manual optimizations of receive path:
- remove checks for impossible conditions (but keep checks
for bad data from host)
- pass argument down, rather than having callee recompute what
is already known
- remove indirection about receive buffer datalength
- remove dependence on VLAN_TAG_PRESENCE
- use _hot/_cold and likely/unlikely
Signed-off-by: Stephen Hemminger <sthemmin@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 fb73caa..4b91e37 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -119,6 +119,7 @@ struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */
/* Fwd declaration */
struct ndis_tcp_ip_checksum_info;
+struct ndis_pkt_8021q_info;
/*
* Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
@@ -186,12 +187,11 @@ int netvsc_send(struct hv_device *device,
struct sk_buff *skb);
void netvsc_linkstatus_callback(struct hv_device *device_obj,
struct rndis_message *resp);
-int netvsc_recv_callback(struct hv_device *device_obj,
- struct hv_netvsc_packet *packet,
- void **data,
- struct ndis_tcp_ip_checksum_info *csum_info,
- struct vmbus_channel *channel,
- u16 vlan_tci);
+int netvsc_recv_callback(struct net_device *net,
+ struct vmbus_channel *channel,
+ void *data, u32 len,
+ const struct ndis_tcp_ip_checksum_info *csum_info,
+ const struct ndis_pkt_8021q_info *vlan);
void netvsc_channel_cb(void *context);
int rndis_filter_open(struct netvsc_device *nvdev);
int rndis_filter_close(struct netvsc_device *nvdev);
@@ -200,10 +200,11 @@ int rndis_filter_device_add(struct hv_device *dev,
void rndis_filter_device_remove(struct hv_device *dev);
int rndis_filter_set_rss_param(struct rndis_device *rdev,
const u8 *key, int num_queue);
-int rndis_filter_receive(struct hv_device *dev,
- struct hv_netvsc_packet *pkt,
- void **data,
- struct vmbus_channel *channel);
+int rndis_filter_receive(struct net_device *ndev,
+ struct netvsc_device *net_dev,
+ struct hv_device *dev,
+ struct vmbus_channel *channel,
+ void *data, u32 buflen);
int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter);
int rndis_filter_set_device_mac(struct net_device *ndev, char *mac);