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Fri, 26 Jan 2024 06:26:53 -0800 (PST) Received: from cloudflare.com ([2a09:bac5:5064:2dc::49:1a2]) by smtp.gmail.com with ESMTPSA id cw6-20020a170907160600b00a2d5e914392sm682812ejd.110.2024.01.26.06.26.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Jan 2024 06:26:52 -0800 (PST) References: <20240124185403.1104141-1-john.fastabend@gmail.com> <20240124185403.1104141-3-john.fastabend@gmail.com> <87zfwse0ln.fsf@cloudflare.com> User-agent: mu4e 1.6.10; emacs 28.3 From: Jakub Sitnicki To: John Fastabend Cc: bpf@vger.kernel.org, netdev@vger.kernel.org, andrii@kernel.org Subject: Re: [PATCH bpf-next v2 2/4] bpf: sockmap, add a sendmsg test so we can check that path Date: Fri, 26 Jan 2024 15:24:53 +0100 In-reply-to: <87zfwse0ln.fsf@cloudflare.com> Message-ID: <87sf2kdvbo.fsf@cloudflare.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Fri, Jan 26, 2024 at 01:17 PM +01, Jakub Sitnicki wrote: > On Wed, Jan 24, 2024 at 10:54 AM -08, John Fastabend wrote: [...] >> @@ -92,6 +136,15 @@ static void test_sockmap_pop(void) >> /* Pop from end */ >> pop_simple_send(&opts, POP_END, 5); >> >> + /* Empty pop from start of sendmsg */ >> + pop_complex_send(&opts, 0, 0); >> + /* Pop from start of sendmsg */ >> + pop_complex_send(&opts, 0, 10); >> + /* Pop from middle of sendmsg */ >> + pop_complex_send(&opts, 100, 10); >> + /* Pop from end of sendmsg */ >> + pop_complex_send(&opts, 394, 10); > > Isn't the start offset here past the end? 15*26=390? Plus terminating null bytes. Nevermind. I can't count.