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Mon, 30 Jun 2025 23:48:10 +0000 (GMT) Received: from localhost.localdomain (unknown [9.61.253.36]) by smtpav02.wdc07v.mail.ibm.com (Postfix) with ESMTP; Mon, 30 Jun 2025 23:48:10 +0000 (GMT) From: Mingming Cao To: netdev@vger.kernel.org Cc: bjking1@linux.ibm.com, haren@linux.ibm.com, ricklind@linux.ibm.com, mmc@linux.ibm.com Subject: [PATCH net-next 0/4] ibmvnic: Improve queue stats and subcrq indirect handling Date: Mon, 30 Jun 2025 16:48:02 -0700 Message-Id: <20250630234806.10885-1-mmc@linux.ibm.com> X-Mailer: git-send-email 2.39.3 (Apple Git-146) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: U2__FbN6l-bjNIpW45E9p7wV-9ctr_MF X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjMwMDE5NiBTYWx0ZWRfX83ZpHaPjj3Yz wqETXb0lK7nV8sCNmyHN/JRCGP9ezbKpVUCHOT8UwiirxCyvqnQKOWyvoRHG1RgIQ9iH5taFhJb e9DXztDUl960ANU8AMADQqnvrzJy9PWJ2EhZSwHfq/PPIiPUJjaI0HkkpRwXs2nr05Zh/YJypax iqAXJQC1CpTbJh/7KPkZjbjXg7GrSHruu9OVxMXJCwXmD9Z/Ja+8U7emUTVAmYmffBOw8aVXKM6 LX9MHlhKlP868AWl/Q874bOpAG/OZq07afCXVLLGBz/C7Ue/DMGVj7Qxm1v8ZIfDoJP9i4GJcgi O1Oa5JE9XSP5KW9SMv8Y6eraW1m0TpJ6T6gDCgokrYC0oTcr7yik4ewWut7bMtEYljul62rA9WE qK/UYoLOqJHjGYv2JxSuJHtAlWINoIIISYgoATAF55eatBYW3mU1zb6sv0uogjZvABd5GEYs X-Authority-Analysis: v=2.4 cv=MOlgmNZl c=1 sm=1 tr=0 ts=6863223d cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=6IFa9wvqVegA:10 a=sU9CkWjVgfER919gmKsA:9 X-Proofpoint-GUID: U2__FbN6l-bjNIpW45E9p7wV-9ctr_MF X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-06-30_06,2025-06-27_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxscore=0 adultscore=0 suspectscore=0 bulkscore=0 clxscore=1011 impostorscore=0 priorityscore=1501 mlxlogscore=507 spamscore=0 malwarescore=0 lowpriorityscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2506300196 This patch series introduces improvements and fixes for the ibmvnic driver, focusing on statistics handling and CRQ scalability: 1. Dynamically derive NUM_R instead of relying on a static macro. This allows more flexible configuration of receive queues at runtime. 2. Convert queue-level statistics to use atomic64_t to ensure correctness under concurrent updates and avoid race conditions. 3. Fix inaccurate System Attention Resource (SAR) statistics reporting by switching to ndo_get_stats64. This aligns the SAR path with the standard kernel interface for retrieving network statistics, ensuring accuracy and consistency. 4. Increase the maximum number of indirect entries per sub-CRQ to better support high-throughput configurations and future scaling needs. Mingming Cao (4): ibmvnic: Derive NUM_RX_STATS/NUM_TX_STATS dynamically ibmvnic: Use atomic64_t for queue stats ibmvnic: Use ndo_get_stats64 to fix inaccurate SAR reporting ibmvnic: Make max subcrq indirect entries tunable via module param drivers/net/ethernet/ibm/ibmvnic.c | 92 ++++++++++++++++++++---------- drivers/net/ethernet/ibm/ibmvnic.h | 29 ++++++---- 2 files changed, 80 insertions(+), 41 deletions(-) -- 2.39.3 (Apple Git-146)