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Drivers: hv: Allow vmbus_sendpacket_mpb_desc() to create multiple ranges

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commit 380b75d3078626aadd0817de61f3143f5db6e393 upstream.

vmbus_sendpacket_mpb_desc() is currently used only by the storvsc driver
and is hardcoded to create a single GPA range. To allow it to also be
used by the netvsc driver to create multiple GPA ranges, no longer
hardcode as having a single GPA range. Allow the calling driver to
specify the rangecount in the supplied descriptor.

Update the storvsc driver to reflect this new approach.

Cc: <stable@vger.kernel.org> # 6.1.x
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Link: https://patch.msgid.link/20250513000604.1396-2-mhklinux@outlook.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Kelley
2025-05-12 17:06:00 -07:00
committed by Greg Kroah-Hartman
parent 115c789047
commit c0f3f0c88f
2 changed files with 4 additions and 3 deletions
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6
drivers/hv/channel.c
View File

@@ -1172,9 +1172,10 @@ int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
EXPORT_SYMBOL_GPL(vmbus_sendpacket_pagebuffer);
/*
* vmbus_sendpacket_multipagebuffer - Send a multi-page buffer packet
* vmbus_sendpacket_mpb_desc - Send one or more multi-page buffer packets
* using a GPADL Direct packet type.
* The buffer includes the vmbus descriptor.
* The desc argument must include space for the VMBus descriptor. The
* rangecount field must already be set.
*/
int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel,
struct vmbus_packet_mpb_array *desc,
@@ -1196,7 +1197,6 @@ int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel,
desc->length8 = (u16)(packetlen_aligned >> 3);
desc->transactionid = VMBUS_RQST_ERROR; /* will be updated in hv_ringbuffer_write() */
desc->reserved = 0;
desc->rangecount = 1;
bufferlist[0].iov_base = desc;
bufferlist[0].iov_len = desc_size;

1
drivers/scsi/storvsc_drv.c
View File

@@ -1819,6 +1819,7 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
return SCSI_MLQUEUE_DEVICE_BUSY;
}
payload->rangecount = 1;
payload->range.len = length;
payload->range.offset = offset_in_hvpg;