From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B9B2FD4F05 for ; Tue, 10 Mar 2026 16:16:43 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id CFEEA410E3; Tue, 10 Mar 2026 17:14:25 +0100 (CET) Received: from mail-oi1-f181.google.com (mail-oi1-f181.google.com [209.85.167.181]) by mails.dpdk.org (Postfix) with ESMTP id 2C48C40E7C for ; Tue, 10 Mar 2026 17:14:22 +0100 (CET) Received: by mail-oi1-f181.google.com with SMTP id 5614622812f47-467161c4a1cso696983b6e.3 for ; Tue, 10 Mar 2026 09:14:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1773159260; x=1773764060; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=FvG73nzdEYqzyzq5+pgq1ZEEdPRoJ/um9UEqKgdYzss=; b=TjVUshmO/zKy34lS2aletAgtpRpiTsV4hDvYI/Au/JzHqyPzEbH7tPvHPyRKk+umLI CLzEsHb+oZ0aHKJW8PKq0/SCvBYy1Cq+N0Jf1YljAEBUD0Yac/PyGDtqTS5lcbmuWMWR A0G/gYawjIStVYGw2IXu06A2AlKtTWL1ATXbptostydsZUSZz8hy/mKWNeopOFyqYixD g5TLpKUPlJaRvJTUB4vdfX3Q3yXlQ/NdaNmiJZrszzdswMEm1rLswCa8hrfYjWhz4aPO S5juc0txRty5w1e/XxC7H4DdIGw64kNyX5AHgr2YMjD3QBOuxfy8sl0eoyyeF3rNcTC/ RY+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1773159260; x=1773764060; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=FvG73nzdEYqzyzq5+pgq1ZEEdPRoJ/um9UEqKgdYzss=; b=LRpF54iwnGJpvPYf/Mi3dpvtfHNzIK5CyhHOqQkxG4N4CR3pJqory6u/i6aMY0Z1Pt tEWAqVKUqiRc1yLVhUXmSUdC4zpecGiGviys7zqfvDfeZsi+oZdsbLQAQPHwaQxuNTTw FMMtdqrH9uXWHt3DEZS+hrRWDw1fJgo9QFtc52mfIkbshyjzFtX3ND5Bv1CZhkSKQNmY lZaFdhIvwnwEycYBseGK9MhadDT6Xe6u1cVOdlJndGOHBUyLh110YgCJDdmcC50ETmQJ YbGKTC7+5adqIhW0lhsk615pZUSeSoBXv5Q2n2E8Eq5G5sb6x1Qki0eLNDkELf9m/06h f0DA== X-Gm-Message-State: AOJu0YwFSBXx4OirGyDYOgpLCMNoM6J0JlbjyOo204c2JqBJvEtAX/UO EYilkcAgoI1oSb+voRbtFpAAMVFsUWw9ovLIwtsUBMgUNkWUzxl7RkleJ7ZYL0lv3ygo8VyeAp7 TffztOI4= X-Gm-Gg: ATEYQzx3jNrLd1zZqXQZURH9Aczc/jytLmZOodcCAxEkNNoenrcb3EWPQE48hasKTcp 4CfWDqAR62ueelAaJpA+AKwmuYhR+SXbIoN7cEr8GrMmkiyfAFDX6Q2OhAJohby+7ICf3l2IEI3 gDcAQrXf29r/D/LEqgGWA6A96/puBbwEvx0lR6IrgVGA+0dG3xFy8kBZzsWXAu1vqmWHzicgDSC Qy6dbuJ3LKbuPdNgKHCmbTbZ8Pw31Ov++z4OKIrEVr0Pkyqehbq0kHkO9sP5/axnpDHbjEQRZJC kOrCm1Xo76R5aBPx1uOHnWGX66fu3a3TI+d/DEGgTN+oCParkth13G4yCg8PEE2KGzAHTVtRfmD t3zno5KaXTyYyY3R3h+r7Rg9q+AQhYmLDqOxCLXHenvTWyRzwjB0aiUlDKMqte7a+O4bvX6M6x7 kDRi9Nin3D0g/yDQxVxHz6lrGoWptz3ICO X-Received: by 2002:a05:6808:6a96:b0:467:1cf5:7684 with SMTP id 5614622812f47-4671cf88618mr1962045b6e.6.1773159260323; Tue, 10 Mar 2026 09:14:20 -0700 (PDT) Received: from phoenix.lan ([104.202.29.139]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7d738e3f421sm7304004a34.25.2026.03.10.09.14.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Mar 2026 09:14:19 -0700 (PDT) From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger Subject: [PATCH v20 18/25] net/pcap: clarify maximum received packet Date: Tue, 10 Mar 2026 09:09:56 -0700 Message-ID: <20260310161356.194553-19-stephen@networkplumber.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260310161356.194553-1-stephen@networkplumber.org> References: <20260106182823.192350-1-stephen@networkplumber.org> <20260310161356.194553-1-stephen@networkplumber.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 The driver has constant RTE_ETH_PCAP_SNAPSHOT_LEN with is set to the largest value the pcap library will return, so that should also be the largest receive buffer. Signed-off-by: Stephen Hemminger --- drivers/net/pcap/pcap_ethdev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/pcap/pcap_ethdev.c b/drivers/net/pcap/pcap_ethdev.c index 20e4b8e6aa..2ffbce2448 100644 --- a/drivers/net/pcap/pcap_ethdev.c +++ b/drivers/net/pcap/pcap_ethdev.c @@ -884,10 +884,11 @@ eth_dev_info(struct rte_eth_dev *dev, dev_info->if_index = internals->if_index; dev_info->max_mac_addrs = 1; - dev_info->max_rx_pktlen = (uint32_t) -1; + dev_info->max_rx_pktlen = RTE_ETH_PCAP_SNAPSHOT_LEN; dev_info->max_rx_queues = dev->data->nb_rx_queues; dev_info->max_tx_queues = dev->data->nb_tx_queues; dev_info->min_rx_bufsize = 0; + dev_info->max_mtu = RTE_ETH_PCAP_SNAPSHOT_LEN - RTE_ETHER_HDR_LEN; dev_info->tx_offload_capa = RTE_ETH_TX_OFFLOAD_MULTI_SEGS | RTE_ETH_TX_OFFLOAD_VLAN_INSERT; dev_info->rx_offload_capa = RTE_ETH_RX_OFFLOAD_VLAN_STRIP | -- 2.51.0