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[2a10:fc81:a806:d6a9::1]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-477a96aed1esm5444245e9.0.2025.11.17.16.19.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Nov 2025 16:19:43 -0800 (PST) Date: Tue, 18 Nov 2025 01:19:42 +0100 From: Stefano Brivio To: Yumei Huang Subject: Re: [PATCH v8 4/6] tcp: Resend SYN for inbound connections Message-ID: <20251118011942.623bf281@elisabeth> In-Reply-To: <20251110093137.87705-5-yuhuang@redhat.com> References: <20251110093137.87705-1-yuhuang@redhat.com> <20251110093137.87705-5-yuhuang@redhat.com> Organization: Red Hat X-Mailer: Claws Mail 4.2.0 (GTK 3.24.49; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: xRX-57Sx8f5paJmUeVwTRzxNSM1G1PeF4ZFYYXzp2uQ_1763425185 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Message-ID-Hash: 7UPP7E35SGOZ7GQV7QYIF2JEJ7JQ7U35 X-Message-ID-Hash: 7UPP7E35SGOZ7GQV7QYIF2JEJ7JQ7U35 X-MailFrom: sbrivio@redhat.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: passt-dev@passt.top, david@gibson.dropbear.id.au X-Mailman-Version: 3.3.8 Precedence: list List-Id: Development discussion and patches for passt Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On Mon, 10 Nov 2025 17:31:35 +0800 Yumei Huang wrote: > +/** > + * tcp_get_rto_params() - Get host kernel RTO parameters > + * @c: Execution context > + */ > +void tcp_get_rto_params(struct ctx *c) > +{ > + intmax_t v; > + > + v = read_file_integer(SYN_RETRIES, SYN_RETRIES_DEFAULT); > + c->tcp.syn_retries = MIN(v, MAX_SYNCNT); > + > + v = read_file_integer(SYN_LINEAR_TIMEOUTS, SYN_LINEAR_TIMEOUTS_DEFAULT); > + c->tcp.syn_linear_timeouts = MIN(v, MAX_SYNCNT); > + > + debug("Read sysctl values syn_retries: %"PRIu8 > + ", syn_linear_timeouts: %"PRIu8, > + c->tcp.syn_retries, > + c->tcp.syn_linear_timeouts); See my comment to 2/6: this should be "Using sysctl values ..." instead. -- Stefano