forked from luck/tmp_suning_uos_patched
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: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
commit
f03b488b2f
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@ -647,9 +647,23 @@ void vmbus_close(struct vmbus_channel *channel)
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}
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EXPORT_SYMBOL_GPL(vmbus_close);
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int vmbus_sendpacket_ctl(struct vmbus_channel *channel, void *buffer,
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u32 bufferlen, u64 requestid,
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enum vmbus_packet_type type, u32 flags)
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/**
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* vmbus_sendpacket() - Send the specified buffer on the given channel
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* @channel: Pointer to vmbus_channel structure.
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* @buffer: Pointer to the buffer you want to receive the data into.
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* @bufferlen: Maximum size of what the the buffer will hold
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* @requestid: Identifier of the request
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* @type: Type of packet that is being send e.g. negotiate, time
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* packet etc.
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*
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* Sends data in @buffer directly to hyper-v via the vmbus
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* This will send the data unparsed to hyper-v.
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*
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* Mainly used by Hyper-V drivers.
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*/
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int vmbus_sendpacket(struct vmbus_channel *channel, void *buffer,
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u32 bufferlen, u64 requestid,
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enum vmbus_packet_type type, u32 flags)
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{
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struct vmpacket_descriptor desc;
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u32 packetlen = sizeof(struct vmpacket_descriptor) + bufferlen;
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@ -676,42 +690,19 @@ int vmbus_sendpacket_ctl(struct vmbus_channel *channel, void *buffer,
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return hv_ringbuffer_write(channel, bufferlist, num_vecs);
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}
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EXPORT_SYMBOL(vmbus_sendpacket_ctl);
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/**
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* vmbus_sendpacket() - Send the specified buffer on the given channel
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* @channel: Pointer to vmbus_channel structure.
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* @buffer: Pointer to the buffer you want to receive the data into.
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* @bufferlen: Maximum size of what the the buffer will hold
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* @requestid: Identifier of the request
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* @type: Type of packet that is being send e.g. negotiate, time
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* packet etc.
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*
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* Sends data in @buffer directly to hyper-v via the vmbus
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* This will send the data unparsed to hyper-v.
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*
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* Mainly used by Hyper-V drivers.
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*/
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int vmbus_sendpacket(struct vmbus_channel *channel, void *buffer,
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u32 bufferlen, u64 requestid,
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enum vmbus_packet_type type, u32 flags)
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{
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return vmbus_sendpacket_ctl(channel, buffer, bufferlen, requestid,
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type, flags);
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}
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EXPORT_SYMBOL(vmbus_sendpacket);
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/*
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* vmbus_sendpacket_pagebuffer_ctl - Send a range of single-page buffer
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* vmbus_sendpacket_pagebuffer - Send a range of single-page buffer
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* packets using a GPADL Direct packet type. This interface allows you
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* to control notifying the host. This will be useful for sending
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* batched data. Also the sender can control the send flags
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* explicitly.
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*/
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int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel,
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struct hv_page_buffer pagebuffers[],
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u32 pagecount, void *buffer, u32 bufferlen,
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u64 requestid, u32 flags)
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int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
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struct hv_page_buffer pagebuffers[],
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u32 pagecount, void *buffer, u32 bufferlen,
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u64 requestid)
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{
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int i;
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struct vmbus_channel_packet_page_buffer desc;
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@ -736,7 +727,7 @@ int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel,
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/* Setup the descriptor */
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desc.type = VM_PKT_DATA_USING_GPA_DIRECT;
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desc.flags = flags;
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desc.flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED;
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desc.dataoffset8 = descsize >> 3; /* in 8-bytes granularity */
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desc.length8 = (u16)(packetlen_aligned >> 3);
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desc.transactionid = requestid;
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@ -757,24 +748,6 @@ int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel,
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return hv_ringbuffer_write(channel, bufferlist, 3);
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}
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EXPORT_SYMBOL_GPL(vmbus_sendpacket_pagebuffer_ctl);
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/*
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* vmbus_sendpacket_pagebuffer - Send a range of single-page buffer
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* packets using a GPADL Direct packet type.
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*/
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int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
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struct hv_page_buffer pagebuffers[],
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u32 pagecount, void *buffer, u32 bufferlen,
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u64 requestid)
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{
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u32 flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED;
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return vmbus_sendpacket_pagebuffer_ctl(channel, pagebuffers, pagecount,
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buffer, bufferlen,
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requestid, flags);
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}
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EXPORT_SYMBOL_GPL(vmbus_sendpacket_pagebuffer);
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/*
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@ -814,62 +787,6 @@ int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel,
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}
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EXPORT_SYMBOL_GPL(vmbus_sendpacket_mpb_desc);
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/*
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* vmbus_sendpacket_multipagebuffer - Send a multi-page buffer packet
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* using a GPADL Direct packet type.
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*/
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int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel,
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struct hv_multipage_buffer *multi_pagebuffer,
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void *buffer, u32 bufferlen, u64 requestid)
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{
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struct vmbus_channel_packet_multipage_buffer desc;
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u32 descsize;
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u32 packetlen;
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u32 packetlen_aligned;
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struct kvec bufferlist[3];
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u64 aligned_data = 0;
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u32 pfncount = NUM_PAGES_SPANNED(multi_pagebuffer->offset,
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multi_pagebuffer->len);
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if (pfncount > MAX_MULTIPAGE_BUFFER_COUNT)
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return -EINVAL;
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/*
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* Adjust the size down since vmbus_channel_packet_multipage_buffer is
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* the largest size we support
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*/
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descsize = sizeof(struct vmbus_channel_packet_multipage_buffer) -
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((MAX_MULTIPAGE_BUFFER_COUNT - pfncount) *
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sizeof(u64));
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packetlen = descsize + bufferlen;
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packetlen_aligned = ALIGN(packetlen, sizeof(u64));
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/* Setup the descriptor */
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desc.type = VM_PKT_DATA_USING_GPA_DIRECT;
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desc.flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED;
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desc.dataoffset8 = descsize >> 3; /* in 8-bytes granularity */
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desc.length8 = (u16)(packetlen_aligned >> 3);
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desc.transactionid = requestid;
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desc.rangecount = 1;
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desc.range.len = multi_pagebuffer->len;
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desc.range.offset = multi_pagebuffer->offset;
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memcpy(desc.range.pfn_array, multi_pagebuffer->pfn_array,
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pfncount * sizeof(u64));
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bufferlist[0].iov_base = &desc;
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bufferlist[0].iov_len = descsize;
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bufferlist[1].iov_base = buffer;
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bufferlist[1].iov_len = bufferlen;
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bufferlist[2].iov_base = &aligned_data;
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bufferlist[2].iov_len = (packetlen_aligned - packetlen);
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return hv_ringbuffer_write(channel, bufferlist, 3);
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}
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EXPORT_SYMBOL_GPL(vmbus_sendpacket_multipagebuffer);
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/**
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* vmbus_recvpacket() - Retrieve the user packet on the specified channel
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* @channel: Pointer to vmbus_channel structure.
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@ -775,18 +775,15 @@ static inline int netvsc_send_pkt(
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if (packet->cp_partial)
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pb += packet->rmsg_pgcnt;
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ret = vmbus_sendpacket_pagebuffer_ctl(out_channel,
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pb, packet->page_buf_cnt,
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&nvmsg,
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sizeof(struct nvsp_message),
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req_id,
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VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
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ret = vmbus_sendpacket_pagebuffer(out_channel,
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pb, packet->page_buf_cnt,
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&nvmsg, sizeof(nvmsg),
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req_id);
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} else {
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ret = vmbus_sendpacket_ctl(out_channel, &nvmsg,
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sizeof(struct nvsp_message),
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req_id,
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VM_PKT_DATA_INBAND,
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VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
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ret = vmbus_sendpacket(out_channel,
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&nvmsg, sizeof(nvmsg),
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req_id, VM_PKT_DATA_INBAND,
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VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
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}
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if (ret == 0) {
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@ -1030,13 +1030,6 @@ extern int vmbus_sendpacket(struct vmbus_channel *channel,
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enum vmbus_packet_type type,
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u32 flags);
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extern int vmbus_sendpacket_ctl(struct vmbus_channel *channel,
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void *buffer,
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u32 bufferLen,
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u64 requestid,
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enum vmbus_packet_type type,
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u32 flags);
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extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
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struct hv_page_buffer pagebuffers[],
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u32 pagecount,
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@ -1044,20 +1037,6 @@ extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
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u32 bufferlen,
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u64 requestid);
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extern int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel,
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struct hv_page_buffer pagebuffers[],
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u32 pagecount,
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void *buffer,
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u32 bufferlen,
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u64 requestid,
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u32 flags);
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extern int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel,
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struct hv_multipage_buffer *mpb,
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void *buffer,
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u32 bufferlen,
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u64 requestid);
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extern int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel,
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struct vmbus_packet_mpb_array *mpb,
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u32 desc_size,
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