Get rid of the buffer allocation in the receive path for normal packets.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
/* Holds rndis device info */
void *extension;
/* Holds rndis device info */
void *extension;
+ /* The recive buffer for this device */
+ unsigned char cb_buffer[NETVSC_PACKET_SIZE];
};
/* NdisInitialize message */
};
/* NdisInitialize message */
struct netvsc_device *net_device;
u32 bytes_recvd;
u64 request_id;
struct netvsc_device *net_device;
u32 bytes_recvd;
u64 request_id;
struct vmpacket_descriptor *desc;
unsigned char *buffer;
int bufferlen = NETVSC_PACKET_SIZE;
struct net_device *ndev;
struct vmpacket_descriptor *desc;
unsigned char *buffer;
int bufferlen = NETVSC_PACKET_SIZE;
struct net_device *ndev;
- packet = kzalloc(NETVSC_PACKET_SIZE * sizeof(unsigned char),
- GFP_ATOMIC);
- if (!packet)
- return;
- buffer = packet;
-
net_device = get_inbound_net_device(device);
if (!net_device)
net_device = get_inbound_net_device(device);
if (!net_device)
+ buffer = net_device->cb_buffer;
do {
ret = vmbus_recvpacket_raw(device->channel, buffer, bufferlen,
do {
ret = vmbus_recvpacket_raw(device->channel, buffer, bufferlen,
- /* reset */
- if (bufferlen > NETVSC_PACKET_SIZE) {
- kfree(buffer);
- buffer = packet;
- bufferlen = NETVSC_PACKET_SIZE;
- }
- /* reset */
- if (bufferlen > NETVSC_PACKET_SIZE) {
- kfree(buffer);
- buffer = packet;
- bufferlen = NETVSC_PACKET_SIZE;
- }
-
+ /*
+ * We are done for this pass.
+ */
} else if (ret == -ENOBUFS) {
} else if (ret == -ENOBUFS) {
+ if (bufferlen > NETVSC_PACKET_SIZE)
+ kfree(buffer);
/* Handle large packet */
buffer = kmalloc(bytes_recvd, GFP_ATOMIC);
if (buffer == NULL) {
/* Handle large packet */
buffer = kmalloc(bytes_recvd, GFP_ATOMIC);
if (buffer == NULL) {
+ if (bufferlen > NETVSC_PACKET_SIZE)
+ kfree(buffer);