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Wed, 08 Jul 2026 10:49:41 -0700 (PDT) X-Received: by 2002:a05:622a:5592:b0:51b:ef2c:7bf0 with SMTP id d75a77b69052e-51c8b4095fdmr37755241cf.35.1783532981529; Wed, 08 Jul 2026 10:49:41 -0700 (PDT) Received: from [10.243.141.238] ([212.136.9.4]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c15ada04d04sm359763166b.47.2026.07.08.10.49.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 08 Jul 2026 10:49:40 -0700 (PDT) Message-ID: Date: Wed, 8 Jul 2026 18:49:39 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Youssef Samir Subject: Re: [PATCH v3 4/5] net: qrtr: ns: Limit the total number of nodes To: Manivannan Sadhasivam , Manivannan Sadhasivam , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman Cc: linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, jeff.hugo@oss.qualcomm.com References: <20260409-qrtr-fix-v3-0-00a8a5ff2b51@oss.qualcomm.com> <20260409-qrtr-fix-v3-4-00a8a5ff2b51@oss.qualcomm.com> Content-Language: en-US In-Reply-To: <20260409-qrtr-fix-v3-4-00a8a5ff2b51@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA4MDE3NCBTYWx0ZWRfX1qTEYVacCP6J Vr+sa7lJR0641qSO7yr8pY/YOMnUBqcHxZnTFOnjj0IkDS7AWZIivPqoEJyr1pRWeOZtL4ZBT2y iGMXW26L+JU+o1OJxwQlF8dssf7QZ7dIyxEYcnJKv35sd5zznxy6lGLYs7EjogF4TuLsqv831YH si/ntTc5Rd0oEql1PcdgBs3FFRTeW6inBDP6ZebMEJ+yaigWfdhDetHxsOw/9ePOPfh8IQK7Rg1 a6CddyGkIespPxku/JQDg0qyegEuuelVM2e6Ihiw+mo1XtE2zQsnZEanAP14EtYg5EM5h52VGDt uHpb385A7h4G/YZ5tpC2FPNA+5qj7b3jZHJp4n4LPjAKDmAvc9PieaJ/0Elci0S+Fw1WPw25AkX k1HbpdDBHVy4B3v2/GOBpNVXoSC84iwiX0h7mb4nMwgYl3OZnpx8zjP7LEW9FmBNaWsG7GQ7TR5 1W/ilLUuJ/aBIBUsysQ== X-Proofpoint-GUID: PIx_FmDw_fkSziiy4OkX6VbZExRz-1Jg X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA4MDE3NCBTYWx0ZWRfX4DvGsHt1ikVW ZpFza4i5CD0ZrxEUNuQuQcB60m5sm3W9ATzqp4LRkbfKZWr/eh+8eIbREI46o84cTtL35u2M/rn cRWGwOgj8No8c5QucgX+sIWtqSTnlfI= X-Proofpoint-ORIG-GUID: PIx_FmDw_fkSziiy4OkX6VbZExRz-1Jg X-Authority-Analysis: v=2.4 cv=Wf88rUhX c=1 sm=1 tr=0 ts=6a4e8db6 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=dNlqnMcrdpbb+gQrTujlOQ==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=iDFCKaCMZfxtLc4CjNwA:9 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-08_03,2026-07-08_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 clxscore=1015 bulkscore=0 impostorscore=0 malwarescore=0 spamscore=0 priorityscore=1501 adultscore=0 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607080174 On 4/9/2026 6:34 PM, Manivannan Sadhasivam wrote: > Currently, the nameserver doesn't limit the number of nodes it handles. > This can be an attack vector if a malicious client starts registering > random nodes, leading to memory exhaustion. > > Hence, limit the maximum number of nodes to 64. Note that, limit of 64 is > chosen based on the current platform requirements. If requirement changes > in the future, this limit can be increased. Hi Mani, There are AI200 setups that can reach 384 nodes (192 * (AI200PF + AI200VF)). I'm not sure about limiting the number of nodes, but if there's a use-case that led to enforcing that limit, could we increase it to something like 512? Thanks, Youssef