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Commit f03b488b authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'vmbus-sendpacket-cleanups' 



Stephen Hemminger says:

====================
vmbus sendpacket cleanups

These patches remove and consolidate vmbus_sendpacket functions.

They should go through the net-next tree since these API's
were only used by the netvsc driver.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 774c4673 5dd0fb9b

drivers/hv/channel.c

+23 −106
Original line number Diff line number Diff line
@@ -647,7 +647,21 @@ void vmbus_close(struct vmbus_channel *channel) 
}

EXPORT_SYMBOL_GPL(vmbus_close);



int vmbus_sendpacket_ctl(struct vmbus_channel *channel, void *buffer,

/**

 * vmbus_sendpacket() - Send the specified buffer on the given channel

 * @channel: Pointer to vmbus_channel structure.

 * @buffer: Pointer to the buffer you want to receive the data into.

 * @bufferlen: Maximum size of what the the buffer will hold

 * @requestid: Identifier of the request

 * @type: Type of packet that is being send e.g. negotiate, time

 * packet etc.

 *

 * Sends data in @buffer directly to hyper-v via the vmbus

 * This will send the data unparsed to hyper-v.

 *

 * Mainly used by Hyper-V drivers.

 */

int vmbus_sendpacket(struct vmbus_channel *channel, void *buffer,

			   u32 bufferlen, u64 requestid,

			   enum vmbus_packet_type type, u32 flags)

{
@@ -676,42 +690,19 @@ int vmbus_sendpacket_ctl(struct vmbus_channel *channel, void *buffer, 


	return hv_ringbuffer_write(channel, bufferlist, num_vecs);

}

EXPORT_SYMBOL(vmbus_sendpacket_ctl);



/**

 * vmbus_sendpacket() - Send the specified buffer on the given channel

 * @channel: Pointer to vmbus_channel structure.

 * @buffer: Pointer to the buffer you want to receive the data into.

 * @bufferlen: Maximum size of what the the buffer will hold

 * @requestid: Identifier of the request

 * @type: Type of packet that is being send e.g. negotiate, time

 * packet etc.

 *

 * Sends data in @buffer directly to hyper-v via the vmbus

 * This will send the data unparsed to hyper-v.

 *

 * Mainly used by Hyper-V drivers.

 */

int vmbus_sendpacket(struct vmbus_channel *channel, void *buffer,

			   u32 bufferlen, u64 requestid,

			   enum vmbus_packet_type type, u32 flags)

{

	return vmbus_sendpacket_ctl(channel, buffer, bufferlen, requestid,

				    type, flags);

}

EXPORT_SYMBOL(vmbus_sendpacket);



/*

 * vmbus_sendpacket_pagebuffer_ctl - Send a range of single-page buffer

 * vmbus_sendpacket_pagebuffer - Send a range of single-page buffer

 * packets using a GPADL Direct packet type. This interface allows you

 * to control notifying the host. This will be useful for sending

 * batched data. Also the sender can control the send flags

 * explicitly.

 */

int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel,

int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,

				struct hv_page_buffer pagebuffers[],

				u32 pagecount, void *buffer, u32 bufferlen,

				    u64 requestid, u32 flags)

				u64 requestid)

{

	int i;

	struct vmbus_channel_packet_page_buffer desc;
@@ -736,7 +727,7 @@ int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel, 


	/* Setup the descriptor */

	desc.type = VM_PKT_DATA_USING_GPA_DIRECT;

	desc.flags = flags;

	desc.flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED;

	desc.dataoffset8 = descsize >> 3; /* in 8-bytes granularity */

	desc.length8 = (u16)(packetlen_aligned >> 3);

	desc.transactionid = requestid;
@@ -757,24 +748,6 @@ int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel, 


	return hv_ringbuffer_write(channel, bufferlist, 3);

}

EXPORT_SYMBOL_GPL(vmbus_sendpacket_pagebuffer_ctl);



/*

 * vmbus_sendpacket_pagebuffer - Send a range of single-page buffer

 * packets using a GPADL Direct packet type.

 */

int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,

				     struct hv_page_buffer pagebuffers[],

				     u32 pagecount, void *buffer, u32 bufferlen,

				     u64 requestid)

{

	u32 flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED;



	return vmbus_sendpacket_pagebuffer_ctl(channel, pagebuffers, pagecount,

					       buffer, bufferlen,

					       requestid, flags);



}

EXPORT_SYMBOL_GPL(vmbus_sendpacket_pagebuffer);



/*
@@ -814,62 +787,6 @@ int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel, 
}

EXPORT_SYMBOL_GPL(vmbus_sendpacket_mpb_desc);



/*

 * vmbus_sendpacket_multipagebuffer - Send a multi-page buffer packet

 * using a GPADL Direct packet type.

 */

int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel,

				struct hv_multipage_buffer *multi_pagebuffer,

				void *buffer, u32 bufferlen, u64 requestid)

{

	struct vmbus_channel_packet_multipage_buffer desc;

	u32 descsize;

	u32 packetlen;

	u32 packetlen_aligned;

	struct kvec bufferlist[3];

	u64 aligned_data = 0;

	u32 pfncount = NUM_PAGES_SPANNED(multi_pagebuffer->offset,

					 multi_pagebuffer->len);



	if (pfncount > MAX_MULTIPAGE_BUFFER_COUNT)

		return -EINVAL;



	/*

	 * Adjust the size down since vmbus_channel_packet_multipage_buffer is

	 * the largest size we support

	 */

	descsize = sizeof(struct vmbus_channel_packet_multipage_buffer) -

			  ((MAX_MULTIPAGE_BUFFER_COUNT - pfncount) *

			  sizeof(u64));

	packetlen = descsize + bufferlen;

	packetlen_aligned = ALIGN(packetlen, sizeof(u64));





	/* Setup the descriptor */

	desc.type = VM_PKT_DATA_USING_GPA_DIRECT;

	desc.flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED;

	desc.dataoffset8 = descsize >> 3; /* in 8-bytes granularity */

	desc.length8 = (u16)(packetlen_aligned >> 3);

	desc.transactionid = requestid;

	desc.rangecount = 1;



	desc.range.len = multi_pagebuffer->len;

	desc.range.offset = multi_pagebuffer->offset;



	memcpy(desc.range.pfn_array, multi_pagebuffer->pfn_array,

	       pfncount * sizeof(u64));



	bufferlist[0].iov_base = &desc;

	bufferlist[0].iov_len = descsize;

	bufferlist[1].iov_base = buffer;

	bufferlist[1].iov_len = bufferlen;

	bufferlist[2].iov_base = &aligned_data;

	bufferlist[2].iov_len = (packetlen_aligned - packetlen);



	return hv_ringbuffer_write(channel, bufferlist, 3);

}

EXPORT_SYMBOL_GPL(vmbus_sendpacket_multipagebuffer);



/**

 * vmbus_recvpacket() - Retrieve the user packet on the specified channel

 * @channel: Pointer to vmbus_channel structure.

drivers/net/hyperv/netvsc.c

+8 −11
Original line number Diff line number Diff line
@@ -775,17 +775,14 @@ static inline int netvsc_send_pkt( 
		if (packet->cp_partial)

			pb += packet->rmsg_pgcnt;



		ret = vmbus_sendpacket_pagebuffer_ctl(out_channel,

		ret = vmbus_sendpacket_pagebuffer(out_channel,

						  pb, packet->page_buf_cnt,

						      &nvmsg,

						      sizeof(struct nvsp_message),

						      req_id,

						      VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);

						  &nvmsg, sizeof(nvmsg),

						  req_id);

	} else {

		ret = vmbus_sendpacket_ctl(out_channel, &nvmsg,

					   sizeof(struct nvsp_message),

					   req_id,

					   VM_PKT_DATA_INBAND,

		ret = vmbus_sendpacket(out_channel,

				       &nvmsg, sizeof(nvmsg),

				       req_id, VM_PKT_DATA_INBAND,

				       VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);

	}

include/linux/hyperv.h

+0 −21
Original line number Diff line number Diff line
@@ -1030,13 +1030,6 @@ extern int vmbus_sendpacket(struct vmbus_channel *channel, 
				  enum vmbus_packet_type type,

				  u32 flags);



extern int vmbus_sendpacket_ctl(struct vmbus_channel *channel,

				  void *buffer,

				  u32 bufferLen,

				  u64 requestid,

				  enum vmbus_packet_type type,

				  u32 flags);



extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,

					    struct hv_page_buffer pagebuffers[],

					    u32 pagecount,
@@ -1044,20 +1037,6 @@ extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel, 
					    u32 bufferlen,

					    u64 requestid);



extern int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel,

					   struct hv_page_buffer pagebuffers[],

					   u32 pagecount,

					   void *buffer,

					   u32 bufferlen,

					   u64 requestid,

					   u32 flags);



extern int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel,

					struct hv_multipage_buffer *mpb,

					void *buffer,

					u32 bufferlen,

					u64 requestid);



extern int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel,

				     struct vmbus_packet_mpb_array *mpb,

				     u32 desc_size,