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Fri, 11 Apr 2025 10:54:48 -0700 (PDT) From: Jakub Sitnicki To: Jiayuan Chen , Michal Luczaj Cc: Andrii Nakryiko , Eduard Zingerman , Mykola Lysenko , Alexei Starovoitov , Daniel Borkmann , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Shuah Khan , Jonathan Corbet , bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Subject: Re: [PATCH bpf-next v2 5/9] selftests/bpf: Add selftest for sockmap/hashmap redirection In-Reply-To: (Jiayuan Chen's message of "Fri, 11 Apr 2025 21:09:53 +0800") References: <20250411-selftests-sockmap-redir-v2-0-5f9b018d6704@rbox.co> <20250411-selftests-sockmap-redir-v2-5-5f9b018d6704@rbox.co> Date: Fri, 11 Apr 2025 19:54:47 +0200 Message-ID: <87a58mh9co.fsf@cloudflare.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Fri, Apr 11, 2025 at 09:09 PM +08, Jiayuan Chen wrote: > On Fri, Apr 11, 2025 at 01:32:41PM +0200, Michal Luczaj wrote: >> Test redirection logic. All supported and unsupported redirect combinations >> are tested for success and failure respectively. >> >> BPF_MAP_TYPE_SOCKMAP >> BPF_MAP_TYPE_SOCKHASH >> x >> sk_msg-to-egress >> sk_msg-to-ingress >> sk_skb-to-egress >> sk_skb-to-ingress > > Could we also add test cases for SK_PASS (and even SK_DROP)? > Previously, we encountered deadlocks and incorrect sequence issues when > the program returned SK_PASS, so explicit testing for these cases would > be helpful. > > If implemented, this test would fully exercise all code paths and > demonstrate a complete example that covers every aspect of > sockmap's packet steering and connection management capabilities. This could easily be a follow up in my mind. [...]