From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 7584F471D9; Sat, 10 Jan 2026 18:21:39 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id BA3BB4028E; Sat, 10 Jan 2026 18:21:38 +0100 (CET) Received: from mail-wm1-f46.google.com (mail-wm1-f46.google.com [209.85.128.46]) by mails.dpdk.org (Postfix) with ESMTP id 30BF240144 for ; Sat, 10 Jan 2026 18:21:38 +0100 (CET) Received: by mail-wm1-f46.google.com with SMTP id 5b1f17b1804b1-47775fb6cb4so28658295e9.0 for ; Sat, 10 Jan 2026 09:21:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1768065698; x=1768670498; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=+Rx9/4wriuhJZRK4l1Gy/quMnTcsZlxVGF/0cviX3Jo=; b=eDKvpJREqxUpQIKd2odOQ74rnfB+hxuVUEydU2vjBntxfdL7ybqpZBBuJRTZfkkQge A1zNxiq2ABaAIERZd1lL0AiUKpkR8XrxBXMdv8A/dAsDPE/CTwa3tI7JuUY3AyReG0F5 syiW9+76lL/0fpqH93sMIvLAWqaKKyKN+VWB6/Gr/5Qz49i+QrhQlY+FhGtk6QF3kDye B3B1zf3P47j+HtMifokta93vQk8JwlK81ibZ1aMyBSV0azntodVj84amDWgLbXYqAV88 EwptbF5YCuTxFXXT0jj58W0X3q18l5wGCSzoFSW3CSC8mxAs6AwUVnDmW/VsS4ZUNrZM C/OQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768065698; x=1768670498; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=+Rx9/4wriuhJZRK4l1Gy/quMnTcsZlxVGF/0cviX3Jo=; b=siLsAXarThfulpaIZbss/MqDqaKdmVbWdGZqZ9NE+L+d6YHckSDACGqfRS2S3fiZFZ g1uEB7B1l/KkFjDzI0wgVD37FxVm6rCCkeuaovjwx7wpYr6V+V/GaNBeuolHtEXt0Ltc vDu359H/XJbtTrgaOSqNeHQdnIPTKbPyWi/itg5O6hOlic4+3Iabb0DuUNl5+/BVq/q3 6IB62PfDNlUynGsWGY2aNxndzmR02jZb9jzZ0JcNzh2wFNGV4sJlax7brdiMBU+v4/cS 8s1iIkBy8Xcn4tLkziuyE2ZXJ6qDuX/MPmqGTxjrV217/4Xek44L4175w0H3PpoVUX3C +I4A== X-Gm-Message-State: AOJu0YyiWMx6TgOrBz5XnLPRcUDMROvnU3Fo/25gCWiBgKXLbS6bvOJE Z+zTzZLzG4Ty9NGeH9UqmWcf2FTqKBiz8QHQvV8601zO0ht81nyF3wo0YhQiZgyCgd0= X-Gm-Gg: AY/fxX756epZcNgVkHZWuFf3BbEWLbB+0u7ZXaCeGFJwj3UPqonXnzcBf65cZtvbKeC 2ONYgQrVwEosMQ9xkBIfRDDbyVGLkLchIcyNrGOft7rteqa3t/jfN9rb8d56kJfTIYVluhCFp1E eEUDLfVRbOQzUpp1azGHFxw74jPVFGRc0kyq/IASUSGQYROScGuZs6InsElyEqGz9LruFnnUYj+ 8cT3CL/Ro3hv1weQ74IMTWNcRzhTx/K1V35Y2F9om8t2jTPmKiTK/ynkzEBjJHmLCJeFEvQtQlz Y2CXiWkjXa2JBv0fEQ97dWJutzUl3vOexOMjKuoVIBNKkQJXhhTFRsrP632iC97odgBKZB8oTGW AFLFw5ioFeQuyZIoQBhf329X1RD2VKM3M4moKq1byExyvs+YMW1cqSdoxJV+WqIhZI8kae8aC+N EohpwRADHGWuUpEO+FDO/xzE6QYHd5K2r2ekuvrV1FgVinDYlAHUC2n/JDLWTC18A= X-Google-Smtp-Source: AGHT+IHGO99kO0zGCOhvoCylkXyOB3yu/1DEp1Sd2+3PXbl8QJoBc75rHRb0UYY6dekLtHKQiEYk9w== X-Received: by 2002:a05:600c:3b28:b0:477:8a2a:123e with SMTP id 5b1f17b1804b1-47d84b41bbfmr151613005e9.33.1768065697439; Sat, 10 Jan 2026 09:21:37 -0800 (PST) Received: from phoenix.local (204-195-96-226.wavecable.com. [204.195.96.226]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-432bd5df939sm28409288f8f.21.2026.01.10.09.21.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 10 Jan 2026 09:21:37 -0800 (PST) Date: Sat, 10 Jan 2026 09:21:32 -0800 From: Stephen Hemminger To: Morten =?UTF-8?B?QnLDuHJ1cA==?= Cc: Subject: Re: [PATCH v3 2/3] test: allow larger packet sizes Message-ID: <20260110092132.729f93b8@phoenix.local> In-Reply-To: <98CBD80474FA8B44BF855DF32C47DC35F6563A@smartserver.smartshare.dk> References: <20260104222523.329760-1-stephen@networkplumber.org> <20260108204449.176087-1-stephen@networkplumber.org> <20260108204449.176087-3-stephen@networkplumber.org> <98CBD80474FA8B44BF855DF32C47DC35F6563A@smartserver.smartshare.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On Fri, 9 Jan 2026 16:00:00 +0100 Morten Br=C3=B8rup wrote: > > generate_packet_burst(struct rte_mempool *mp, struct rte_mbuf > > **pkts_burst, > > struct rte_ether_hdr *eth_hdr, uint8_t vlan_enabled, > > void *ip_hdr, uint8_t ipv4, struct rte_udp_hdr *udp_hdr, > > - int nb_pkt_per_burst, uint8_t pkt_len, uint8_t > > nb_pkt_segs); > > + int nb_pkt_per_burst, uint16_t pkt_len, uint8_t > > nb_pkt_segs); =20 >=20 > The pkt_len field in rte_mbuf is uint32_t. > You could upgrade the packet length here to uint32_t too, instead of upgr= ading to only uint16_t. This code is generating UDP packets, and the maximum size allowed with UDP = is UINT16_MAX. IP packet length is also limited to 16 bits. But you comment did motivate fixing to allow more packet segments.