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[67.160.120.253]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22fc828b491sm68470665ad.184.2025.05.12.17.06.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 May 2025 17:06:21 -0700 (PDT) From: mhkelley58@gmail.com X-Google-Original-From: mhklinux@outlook.com To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, James.Bottomley@HansenPartnership.com, martin.petersen@oracle.com Cc: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-scsi@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH net 1/5] Drivers: hv: Allow vmbus_sendpacket_mpb_desc() to create multiple ranges Date: Mon, 12 May 2025 17:06:00 -0700 Message-Id: <20250513000604.1396-2-mhklinux@outlook.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250513000604.1396-1-mhklinux@outlook.com> References: <20250513000604.1396-1-mhklinux@outlook.com> Reply-To: mhklinux@outlook.com Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Michael Kelley 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: # 6.1.x Signed-off-by: Michael Kelley --- drivers/hv/channel.c | 6 +++--- drivers/scsi/storvsc_drv.c | 1 + 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index fb8cd8469328..4ffd5eaa7817 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -1136,9 +1136,10 @@ 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, @@ -1160,7 +1161,6 @@ 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; diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 35db061ae3ec..2e6b2412d2c9 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -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;