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Wythe" Cc: kuba@kernel.org, davem@davemloft.net, netdev@vger.kernel.org, linux-s390@vger.kernel.org, linux-rdma@vger.kernel.org References: <20f504f961e1a803f85d64229ad84260434203bd.1644323503.git.alibuda@linux.alibaba.com> <74e9c7fb-073c-cd62-c42a-e57c18de3404@linux.ibm.com> <9ba496e1-daf1-57d2-318e-bfcd4f57755c@linux.alibaba.com> From: Karsten Graul Organization: IBM Deutschland Research & Development GmbH In-Reply-To: <9ba496e1-daf1-57d2-318e-bfcd4f57755c@linux.alibaba.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: CLFbqcOMpMq3T5cGntM_iugrjV4weN3e X-Proofpoint-GUID: hJ9hffZ76Lw4ZhrXFghoxnLXobQ9ayCe X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-02-09_04,2022-02-07_02,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 malwarescore=0 spamscore=0 mlxlogscore=842 clxscore=1015 phishscore=0 mlxscore=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2202090051 Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org On 09/02/2022 07:41, D. Wythe wrote: > > Some of our servers have different service types on different ports. > A global switch cannot control different service ports individually in this case。In fact, it has nothing to do with using netlink or not. Socket options is the first solution comes to my mind in that case，I don't know if there is any other better way。 > I try to understand why you think it is needed to handle different service types differently. As you wrote > After some trial and thought, I found that the scope of netlink control is too large please explain what you found out. I don't doubt about netlink or socket option here, its all about why a global switch for this behavior isn't good enough.