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Fri, 27 Nov 2020 17:47:56 +0000 (GMT) Received: from oc6034535106.ibm.com (unknown [9.163.79.105]) by b03ledav006.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 27 Nov 2020 17:47:55 +0000 (GMT) Subject: Re: [PATCH 06/13] ibmvfc: add handlers to drain and complete Sub-CRQ responses To: Tyrel Datwyler , james.bottomley@hansenpartnership.com References: <20201126014824.123831-1-tyreld@linux.ibm.com> <20201126014824.123831-7-tyreld@linux.ibm.com> From: Brian King Message-ID: Date: Fri, 27 Nov 2020 11:47:55 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.3.1 MIME-Version: 1.0 In-Reply-To: <20201126014824.123831-7-tyreld@linux.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-11-27_10:2020-11-26, 2020-11-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 lowpriorityscore=0 adultscore=0 spamscore=0 impostorscore=0 malwarescore=0 suspectscore=2 mlxscore=0 phishscore=0 priorityscore=1501 clxscore=1015 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011270099 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: brking@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, linux-scsi@vger.kernel.org, martin.petersen@oracle.com, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 11/25/20 7:48 PM, Tyrel Datwyler wrote: > The logic for iterating over the Sub-CRQ responses is similiar to that > of the primary CRQ. Add the necessary handlers for processing those > responses. > > Signed-off-by: Tyrel Datwyler > --- > drivers/scsi/ibmvscsi/ibmvfc.c | 72 ++++++++++++++++++++++++++++++++++ > 1 file changed, 72 insertions(+) > > diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c > index 6eaedda4917a..a8730522920e 100644 > --- a/drivers/scsi/ibmvscsi/ibmvfc.c > +++ b/drivers/scsi/ibmvscsi/ibmvfc.c > @@ -3371,6 +3371,78 @@ static int ibmvfc_toggle_scrq_irq(struct ibmvfc_sub_queue *scrq, int enable) > return rc; > } > > +static void ibmvfc_handle_scrq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost) > +{ > + struct ibmvfc_event *evt = (struct ibmvfc_event *)be64_to_cpu(crq->ioba); > + > + switch (crq->valid) { > + case IBMVFC_CRQ_CMD_RSP: > + break; > + default: > + dev_err(vhost->dev, "Got and invalid message type 0x%02x\n", crq->valid); Is this correct? Can't we get transport events here as well? > + return; > + } > + > + /* The only kind of payload CRQs we should get are responses to > + * things we send. Make sure this response is to something we > + * actually sent > + */ > + if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) { > + dev_err(vhost->dev, "Returned correlation_token 0x%08llx is invalid!\n", > + crq->ioba); > + return; > + } > + > + if (unlikely(atomic_read(&evt->free))) { > + dev_err(vhost->dev, "Received duplicate correlation_token 0x%08llx!\n", > + crq->ioba); > + return; > + } > + > + del_timer(&evt->timer); > + list_del(&evt->queue); > + ibmvfc_trc_end(evt); > + evt->done(evt); > +} > + -- Brian King Power Linux I/O IBM Linux Technology Center