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Fri, 11 Sep 2026 02:12:09 +0000 (GMT) Received: from [9.61.103.123] (unknown [9.61.103.123]) by smtpav03.dal12v.mail.ibm.com (Postfix) with ESMTP; Fri, 11 Sep 2026 02:12:08 +0000 (GMT) Message-ID: Date: Thu, 10 Sep 2026 19:12:08 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 0/9] scsi: ibmvfc: make ibmvfc support FPIN messages To: james.bottomley@hansenpartnership.com, martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, brking@linux.ibm.com, davemarq@linux.ibm.com References: <20260909-ibmvfc-fpin-support-v8-0-b27183b055af@linux.ibm.com> Content-Language: en-US From: Tyrel Datwyler In-Reply-To: <20260909-ibmvfc-fpin-support-v8-0-b27183b055af@linux.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=SpUFe/O0 c=1 sm=1 tr=0 ts=6aa3637c cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VnNF1IyMAAAA:8 a=fT4Tv0FmYl8aopXRZhsA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-ORIG-GUID: cuHROuYj0CYtdKccNUi4tGUzsAM_WD9M X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTExMDAyNCBTYWx0ZWRfX3q0XKphhTqh8 XMx4Kwxp43+OARQ2T8LBEPiR3vKWOSW4zn8WFwhfSbmuuYiW2S11n1RUyCaxMqhoPUM4g8G+j3X S9B2Pbb/xr/oxLzNaiYw7ze9QUwZ66cCupAX9mf+CoB8ID7GVy9QaLWYkq7QJr990xP6K9qlOa/ jAmy2pRxkBYXHFWjvNK3ULD7emGqi18jQo2Ygo8r1AjlaaFej0RefDmcXdxMWxqpRob0doMzX3w nHL3ohDEQZCQ84fGtG5sY2fJ3FeBLdgesA8wMUgPQoYa9mQrInvxs9KfIXAM7F2h+alAKdtnQ0g OqsJFIoykEnzX/Ml0K9Yob7ZKjLeeOjTiACnk8CBE1qORHD6XtcFYfakG2XQ7ReUjP3GwQBIoSq dbMSwvcj204Ue1nxbIvadYTe2jFByTPA51n1hnZTrzl/DPNa4AKQvbDJGIT6EpzgBmNRJ1VB98+ qx6lkw3jFA7Cv9/Tfrw== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTExMDAyNCBTYWx0ZWRfXzO4FHaDdA79Z lKBFOeXTQIRcGNjfrof2k+1jazcBrvOO3tjqO4ssHPbaSjZrstfmP4yIFoT4D4FHW7DjvhNmuUH FyD6QM1X1YWpeA5AZPv0Dyd+xpQKWMI= X-Proofpoint-GUID: cuHROuYj0CYtdKccNUi4tGUzsAM_WD9M X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-11_01,2026-09-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 lowpriorityscore=0 suspectscore=0 spamscore=0 clxscore=1015 phishscore=0 malwarescore=0 impostorscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609110024 On 9/10/26 7:08 PM, Tyrel Datwyler wrote: > From: Dave Marquardt > > This patch series adds FPIN (fabric performance impact notification) > support to the ibmvfc (IBM Virtual Fibre Channel) driver. This comes > in three flavors: > > - basic, to recognize existing FPIN messages from the virtual I/O > server (VIOS) (patch 1) > - full, supporting additional FPIN information and using its own > asynchronous sub-queue and interrupt (patches 3-8) > - extended, supporting FC-LS-5 (patch 9) > > Full and extended FPIN support requires a new asynchronous sub-queue > with its own interrupt. The asynchronous sub-queue support requires > ibmvfc to also support a new IBMVFC_NOOP command, which the driver > recognizes and ignores (patch 2). > > The asynchronous sub-queue work is split across four patches: patch 3 > defines the necessary data structures, patch 5 adds the interrupt and > drain routines for the queue, patch 6 extends channel registration and > deregistration to accommodate the new queue, and patch 7 fixes IRQ > cleanup on registration failure. Patch 8 wires everything together, > registering the async sub-queue during channel initialization and > advertising support to VIOS during NPIV login. > > All three modes convert an incoming FPIN message from VIOS to an FC > extended link service message, in some cases using default values for > information not provided by the VIOS FPIN message but expected in the > FC ELS message. This FC ELS message is passed to fc_host_rcv_fpin for > updating statistics and sending the information upstream by netlink > multicast, where it may be read by listeners including the DM > multipath daemon "multipathd." > > Signed-off-by: Dave Marquardt > Signed-off-by: Tyrel Datwyler > --- Well it looks like I botched the cover letter and message-id here on the v9 respin. Doh! I'll resend. -Tyrel