Drivers: hv: vmbus: Remove vmbus_sendpacket_pagebuffer()

With the netvsc driver changed to use vmbus_sendpacket_mpb_desc()
instead of vmbus_sendpacket_pagebuffer(), the latter has no remaining
callers. Remove it.

Cc: <stable@vger.kernel.org> # 6.1.x
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Link: https://patch.msgid.link/20250513000604.1396-6-mhklinux@outlook.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index 4ffd5eaa781725394cd43a7643999e5dda35ba30..35f26fa1ffe76e8a3fb4d64eb563c520d0da4d98 100644 (file)
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -1076,65 +1076,6 @@ int vmbus_sendpacket(struct vmbus_channel *channel, void *buffer,
 }
 EXPORT_SYMBOL(vmbus_sendpacket);
 
-/*
- * 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(struct vmbus_channel *channel,
-                               struct hv_page_buffer pagebuffers[],
-                               u32 pagecount, void *buffer, u32 bufferlen,
-                               u64 requestid)
-{
-       int i;
-       struct vmbus_channel_packet_page_buffer desc;
-       u32 descsize;
-       u32 packetlen;
-       u32 packetlen_aligned;
-       struct kvec bufferlist[3];
-       u64 aligned_data = 0;
-
-       if (pagecount > MAX_PAGE_BUFFER_COUNT)
-               return -EINVAL;
-
-       /*
-        * Adjust the size down since vmbus_channel_packet_page_buffer is the
-        * largest size we support
-        */
-       descsize = sizeof(struct vmbus_channel_packet_page_buffer) -
-                         ((MAX_PAGE_BUFFER_COUNT - pagecount) *
-                         sizeof(struct hv_page_buffer));
-       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 = VMBUS_RQST_ERROR; /* will be updated in hv_ringbuffer_write() */
-       desc.reserved = 0;
-       desc.rangecount = pagecount;
-
-       for (i = 0; i < pagecount; i++) {
-               desc.range[i].len = pagebuffers[i].len;
-               desc.range[i].offset = pagebuffers[i].offset;
-               desc.range[i].pfn        = pagebuffers[i].pfn;
-       }
-
-       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, requestid, NULL);
-}
-EXPORT_SYMBOL_GPL(vmbus_sendpacket_pagebuffer);
-
 /*
  * vmbus_sendpacket_mpb_desc - Send one or more multi-page buffer packets
  * using a GPADL Direct packet type.

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 675959fb97ba9df5cb27c9792c263068f08848e0..ea806cef4a0d68342fead67dce75f36d35571268 100644 (file)
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1161,13 +1161,6 @@ extern int vmbus_sendpacket(struct vmbus_channel *channel,
                                  enum vmbus_packet_type type,
                                  u32 flags);
 
-extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
-                                           struct hv_page_buffer pagebuffers[],
-                                           u32 pagecount,
-                                           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,