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Commit a9f2e2d6 authored by KY Srinivasan's avatar KY Srinivasan Committed by David S. Miller
Browse files

hv_netvsc: Eliminate page_buf from struct hv_netvsc_packet 



Eliminate page_buf from struct hv_netvsc_packet.

Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2a04ae8a

drivers/net/hyperv/hyperv_net.h

+2 −2
Original line number Diff line number Diff line
@@ -149,7 +149,6 @@ struct hv_netvsc_packet { 




	u64 send_completion_tid;

	struct hv_page_buffer *page_buf;

};



struct netvsc_device_info {
@@ -187,7 +186,8 @@ int netvsc_device_add(struct hv_device *device, void *additional_info); 
int netvsc_device_remove(struct hv_device *device);

int netvsc_send(struct hv_device *device,

		struct hv_netvsc_packet *packet,

		struct rndis_message *rndis_msg);

		struct rndis_message *rndis_msg,

		struct hv_page_buffer **page_buffer);

void netvsc_linkstatus_callback(struct hv_device *device_obj,

				struct rndis_message *resp);

void netvsc_xmit_completion(void *context);

drivers/net/hyperv/netvsc.c

+14 −11
Original line number Diff line number Diff line
@@ -702,7 +702,8 @@ static u32 netvsc_copy_to_send_buf(struct netvsc_device *net_device, 
				   unsigned int section_index,

				   u32 pend_size,

				   struct hv_netvsc_packet *packet,

				   struct rndis_message *rndis_msg)

				   struct rndis_message *rndis_msg,

				   struct hv_page_buffer **pb)

{

	char *start = net_device->send_buf;

	char *dest = start + (section_index * net_device->send_section_size)
@@ -723,9 +724,9 @@ static u32 netvsc_copy_to_send_buf(struct netvsc_device *net_device, 
	}



	for (i = 0; i < page_count; i++) {

		char *src = phys_to_virt(packet->page_buf[i].pfn << PAGE_SHIFT);

		u32 offset = packet->page_buf[i].offset;

		u32 len = packet->page_buf[i].len;

		char *src = phys_to_virt((*pb)[i].pfn << PAGE_SHIFT);

		u32 offset = (*pb)[i].offset;

		u32 len = (*pb)[i].len;



		memcpy(dest, (src + offset), len);

		msg_size += len;
@@ -742,7 +743,8 @@ static u32 netvsc_copy_to_send_buf(struct netvsc_device *net_device, 


static inline int netvsc_send_pkt(

	struct hv_netvsc_packet *packet,

	struct netvsc_device *net_device)

	struct netvsc_device *net_device,

	struct hv_page_buffer **pb)

{

	struct nvsp_message nvmsg;

	u16 q_idx = packet->q_idx;
@@ -789,8 +791,8 @@ static inline int netvsc_send_pkt( 
		packet->xmit_more = false;



	if (packet->page_buf_cnt) {

		pgbuf = packet->cp_partial ? packet->page_buf +

			packet->rmsg_pgcnt : packet->page_buf;

		pgbuf = packet->cp_partial ? (*pb) +

			packet->rmsg_pgcnt : (*pb);

		ret = vmbus_sendpacket_pagebuffer_ctl(out_channel,

						      pgbuf,

						      packet->page_buf_cnt,
@@ -838,7 +840,8 @@ static inline int netvsc_send_pkt( 


int netvsc_send(struct hv_device *device,

		struct hv_netvsc_packet *packet,

		struct rndis_message *rndis_msg)

		struct rndis_message *rndis_msg,

		struct hv_page_buffer **pb)

{

	struct netvsc_device *net_device;

	int ret = 0, m_ret = 0;
@@ -891,7 +894,7 @@ int netvsc_send(struct hv_device *device, 
	if (section_index != NETVSC_INVALID_INDEX) {

		netvsc_copy_to_send_buf(net_device,

					section_index, msd_len,

					packet, rndis_msg);

					packet, rndis_msg, pb);



		packet->send_buf_index = section_index;
@@ -922,7 +925,7 @@ int netvsc_send(struct hv_device *device, 
	}



	if (msd_send) {

		m_ret = netvsc_send_pkt(msd_send, net_device);

		m_ret = netvsc_send_pkt(msd_send, net_device, pb);



		if (m_ret != 0) {

			netvsc_free_send_slot(net_device,
@@ -932,7 +935,7 @@ int netvsc_send(struct hv_device *device, 
	}



	if (cur_send)

		ret = netvsc_send_pkt(cur_send, net_device);

		ret = netvsc_send_pkt(cur_send, net_device, pb);



	if (ret != 0 && section_index != NETVSC_INVALID_INDEX)

		netvsc_free_send_slot(net_device, section_index);

drivers/net/hyperv/netvsc_drv.c

+6 −5
Original line number Diff line number Diff line
@@ -324,9 +324,10 @@ static u32 fill_pg_buf(struct page *page, u32 offset, u32 len, 
}



static u32 init_page_array(void *hdr, u32 len, struct sk_buff *skb,

			   struct hv_netvsc_packet *packet)

			   struct hv_netvsc_packet *packet,

			   struct hv_page_buffer **page_buf)

{

	struct hv_page_buffer *pb = packet->page_buf;

	struct hv_page_buffer *pb = *page_buf;

	u32 slots_used = 0;

	char *data = skb->data;

	int frags = skb_shinfo(skb)->nr_frags;
@@ -437,6 +438,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) 
	u32 hash;

	u32 skb_length;

	struct hv_page_buffer page_buf[MAX_PAGE_BUFFER_COUNT];

	struct hv_page_buffer *pb = page_buf;

	struct netvsc_stats *tx_stats = this_cpu_ptr(net_device_ctx->tx_stats);



	/* We will atmost need two pages to describe the rndis
@@ -483,7 +485,6 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) 
	packet->xmit_more = skb->xmit_more;



	packet->vlan_tci = skb->vlan_tci;

	packet->page_buf = page_buf;



	packet->q_idx = skb_get_queue_mapping(skb);
@@ -622,9 +623,9 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) 
	rndis_msg->msg_len += rndis_msg_size;

	packet->total_data_buflen = rndis_msg->msg_len;

	packet->page_buf_cnt = init_page_array(rndis_msg, rndis_msg_size,

					       skb, packet);

					       skb, packet, &pb);



	ret = netvsc_send(net_device_ctx->device_ctx, packet, rndis_msg);

	ret = netvsc_send(net_device_ctx->device_ctx, packet, rndis_msg, &pb);



drop:

	if (ret == 0) {

drivers/net/hyperv/rndis_filter.c

+13 −13
Original line number Diff line number Diff line
@@ -210,6 +210,7 @@ static int rndis_filter_send_request(struct rndis_device *dev, 
	int ret;

	struct hv_netvsc_packet *packet;

	struct hv_page_buffer page_buf[2];

	struct hv_page_buffer *pb = page_buf;



	/* Setup the packet to send it */

	packet = &req->pkt;
@@ -217,30 +218,29 @@ static int rndis_filter_send_request(struct rndis_device *dev, 
	packet->is_data_pkt = false;

	packet->total_data_buflen = req->request_msg.msg_len;

	packet->page_buf_cnt = 1;

	packet->page_buf = page_buf;



	packet->page_buf[0].pfn = virt_to_phys(&req->request_msg) >>

	pb[0].pfn = virt_to_phys(&req->request_msg) >>

					PAGE_SHIFT;

	packet->page_buf[0].len = req->request_msg.msg_len;

	packet->page_buf[0].offset =

	pb[0].len = req->request_msg.msg_len;

	pb[0].offset =

		(unsigned long)&req->request_msg & (PAGE_SIZE - 1);



	/* Add one page_buf when request_msg crossing page boundary */

	if (packet->page_buf[0].offset + packet->page_buf[0].len > PAGE_SIZE) {

	if (pb[0].offset + pb[0].len > PAGE_SIZE) {

		packet->page_buf_cnt++;

		packet->page_buf[0].len = PAGE_SIZE -

			packet->page_buf[0].offset;

		packet->page_buf[1].pfn = virt_to_phys((void *)&req->request_msg

			+ packet->page_buf[0].len) >> PAGE_SHIFT;

		packet->page_buf[1].offset = 0;

		packet->page_buf[1].len = req->request_msg.msg_len -

			packet->page_buf[0].len;

		pb[0].len = PAGE_SIZE -

			pb[0].offset;

		pb[1].pfn = virt_to_phys((void *)&req->request_msg

			+ pb[0].len) >> PAGE_SHIFT;

		pb[1].offset = 0;

		pb[1].len = req->request_msg.msg_len -

			pb[0].len;

	}



	packet->completion_func = 0;

	packet->xmit_more = false;



	ret = netvsc_send(dev->net_dev->dev, packet, NULL);

	ret = netvsc_send(dev->net_dev->dev, packet, NULL, &pb);

	return ret;

}