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b=cUQjlZJn9wYuwSQAt3+Kl76d+KCNuOM9rD6fhBJm+oa7ZrMfaBPS7O4otKmzzOvZxssB1oKRrs4H/HPOaRHhELO7w2IxNVLBjuZJ6txGnOLwUTicbfiEJx4mCGJy9H/KUHKcJOw+Yvvbc4c/6WQm0Cv9kUyujHU/JUcSEqTbS8E= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from CH2PR12MB4294.namprd12.prod.outlook.com (2603:10b6:610:a9::11) by IA1PR12MB7734.namprd12.prod.outlook.com (2603:10b6:208:422::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7159.21; Thu, 11 Jan 2024 14:21:29 +0000 Received: from CH2PR12MB4294.namprd12.prod.outlook.com ([fe80::815a:45e6:cf5e:479f]) by CH2PR12MB4294.namprd12.prod.outlook.com ([fe80::815a:45e6:cf5e:479f%4]) with mapi id 15.20.7181.018; Thu, 11 Jan 2024 14:21:29 +0000 Message-ID: <8a667d69-8543-4dd0-bc90-9929b670a261@amd.com> Date: Thu, 11 Jan 2024 14:21:23 +0000 User-Agent: Mozilla Thunderbird Subject: Re: [v7 1/1] net/af_xdp: fix multi interface support for K8s Content-Language: en-US To: Maryam Tahhan , stephen@networkplumber.org, lihuisong@huawei.com, fengchengwen@huawei.com, liuyonglong@huawei.com, david.marchand@redhat.com Cc: dev@dpdk.org, Ciara Loftus , Shibin Koikkara Reeny , Kevin Traynor , Luca Boccassi References: <20231222110441.2507650-1-mtahhan@redhat.com> <6cd6ab2d-56ab-4afe-b0cd-05ab6b017469@amd.com> <89fd40d1-cc91-4390-9bc6-c60f24129ebb@redhat.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@amd.com; 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I took this as an improvement, >> more than a fix. > > This was overlooked by me apologies. It's been a while since I've > contributed to DPDK and I must've missed this detail in the contribution > guide. >> As far as I understand existing code (that use 'use_cni' dev_arg) >> supports only single netdev, this patch adds support for multiple netdevs. > > The use_cni implementation will no longer work with the AF_XDP DP as the > use_cni was originally implemented as it has hard coded what's now an > incorrect path for the UDS. > >> So what do you think keep LTS with 'use_cni' dev_arg, is there a >> requirement to update LTS release? >> If so, can it be an option to keep 'use_cni' for backward compatibility >> but add only add 'uds_path' and remove 'use_cni' in next LTS? > > > Yeah we can go back to the version of the patch that had the 'use_cni' > flag that was used in combination with the path argument. We can add > better documentation re the "use_cni" misnomer... What we can then do is > if no path argument is set by the user assume their intent and and > generate the path internally in the AF_XDP PMD (which was suggested by > Shibin at some stage). That way there should be no surprises to the End > User. > Ack, this keeps backward compatibility, BUT if 'use_cni' is already broken in v23.11 (that is what I understand from your above comment), means there is no user of it in LTS, and we can be more pragmatic and replace the dev_args, by backporting this patch, assuming LTS maintainer is also OK with it. > Long term I would like to keep a (renamed) path argument (in case the > path does ever change from the AF_XDP DP POV) and use it also in > combination with another (maybe boolean) param for passing pinned bpf > maps rather than another separate path. > > WDYT? Would this work for the LTS release? > >