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 18F31D46BEF for ; Wed, 28 Jan 2026 19:02:01 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id AD2B7406B8; Wed, 28 Jan 2026 20:01:49 +0100 (CET) Received: from mail-wr1-f47.google.com (mail-wr1-f47.google.com [209.85.221.47]) by mails.dpdk.org (Postfix) with ESMTP id 4D4EC40673 for ; Wed, 28 Jan 2026 20:01:41 +0100 (CET) Received: by mail-wr1-f47.google.com with SMTP id ffacd0b85a97d-432d2670932so180940f8f.2 for ; Wed, 28 Jan 2026 11:01:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1769626901; x=1770231701; 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=MDDS0HkuzOzBl/TXkSHWbLnO+E/BHqYirw0R2QAbNmY=; b=zNl67wCO3o3N+h3aRoDjGtbGCh20Z4AQvcVosliNpmRsutBryfIwrVPEY8SqlWcVl9 wGbfkU8uZQ0sTSwhKRMe91Ephn7oQFi5eiOycK1bkEqV6IDqDIsMUQpWsSaUeUDFVrXt KVd4u3RYbmxFRxVr+IF67dQV7dz9jCMN17Yan2SS7Dta2OJSEDJHXzBEGKX6+l7vYHZ0 j+gBY9aAl/zE7imAazfU+XquoTTtwQsji9a0BjpuZLPIrulPcuK8/6mKTQyNM29oo9Dy PdUQKc3uHvau+Vhfz8nPzXhey3hUDp3GyLNCRwKh5S/BJLMjF0IFwwhpno1zYu1f++xd avKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769626901; x=1770231701; 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=MDDS0HkuzOzBl/TXkSHWbLnO+E/BHqYirw0R2QAbNmY=; b=xDC9HQoHZReqVVV5UJ3M0hqruSOmW4QNHoXmSPCrKCMcklhLhJQMYIHzx9keFF2ZcU VasFm2x6SvsMW+7kwfx3xDDQu2FBiQbPTWjwCeU/dXdcbkOzMaA3TajbsYcR64EuHBZB dPtiZVnt48y73EhjvJPu3dYiIO66bpq5lgTJ/CuhI7OHH6EpgvMCKX5ACPv8aAXE8Y4u +TjCOvFJXor4Di1lscwSmryCL8zo3lnoXR+RWKfxq0Z8JWS/KwIi5qOJbZ6InZ9Fipbx rBSXainYIOGSMfzd2aB3Yb1OEFOThQlYUyOHjIjNXTEw4XKyVW+4iLpOiSfDogZNrizN eEWw== X-Gm-Message-State: AOJu0YwBOE3iJ1B5Vu5oA88IYxJJc2PbEEk33ZV7GYhBvPvHkpyVUO/U f3EPYYhcCcb+xp1OZAhYbjB9LKya6GLHb0Nf8Z8xeBJAERvsDk78uh1HEqs/c3EFrzn6zpvkMam uE/RN X-Gm-Gg: AZuq6aJ3goruB5hTxHPzwA/5Ng6t9ygf++zzpL7PGv5x8lLwGZhYZ+eImf89uo2Ywrh KLZcYCFkKaaJFoxHZm0G2NsctS60rj4P5cIiuJKDUUbMB+SD9uiy6WSjBCQl7LM1laAA0i+Nepo K9gzurDM4mXldAa0djFfPZSV5yHp/dzWUfAQBh4IIPxbRWUeEnBHG1wFCroeAejRFxlL7Y/fTj1 G7XvqDRj34/rJUyaad+snemFpq73XNBr/eHjAs8ZC3oV+BROsvlL8fyk6rXvEgYHK3IF4ckQszy QfOKlJeiwcgjNIeFTrrPbLbZzs0NuUKonzMl4NYShMKfA0zVIhfn7qIE6rVApA+yw3AoEijrrV8 U4bNryBTk0zjnfLm1347naOzcZE6Y+G/5LXE0wzNHxsF62iI4jXfFe5qu9mle5ex3n4gDte8RtF CeAH1hdVM9w4rrU8GuqDL35BbmG/fQu8QNmP7bZ2QIx2RpKST6HA== X-Received: by 2002:a05:6000:18a4:b0:435:a9ad:d20f with SMTP id ffacd0b85a97d-435dd030475mr9549030f8f.19.1769626900803; Wed, 28 Jan 2026 11:01:40 -0800 (PST) Received: from phoenix.lan (204-195-96-226.wavecable.com. [204.195.96.226]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-435e10e483asm8673333f8f.3.2026.01.28.11.01.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jan 2026 11:01:40 -0800 (PST) From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger , stable@dpdk.org, Tetsuya Mukawa , Bernard Iremonger Subject: [PATCH v8 4/5] net/null: add check for pool vs packet size Date: Wed, 28 Jan 2026 11:00:12 -0800 Message-ID: <20260128190127.465743-5-stephen@networkplumber.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260128190127.465743-1-stephen@networkplumber.org> References: <20260104222523.329760-1-stephen@networkplumber.org> <20260128190127.465743-1-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 mbuf pool passed when setting up queue must have space in the mbuf to hold the requested packet size; otherwise the code in eth_null_copy_rx() would generate invalid mbuf. Fixes: c743e50c475f ("null: new poll mode driver") Cc: stable@dpdk.org Signed-off-by: Stephen Hemminger --- drivers/net/null/rte_eth_null.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/null/rte_eth_null.c b/drivers/net/null/rte_eth_null.c index 4496c093a7..4b4d996686 100644 --- a/drivers/net/null/rte_eth_null.c +++ b/drivers/net/null/rte_eth_null.c @@ -241,6 +241,9 @@ eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id, packet_size = internals->packet_size; + if (rte_pktmbuf_data_room_size(mb_pool) < packet_size) + return -ENOSPC; + internals->rx_null_queues[rx_queue_id].mb_pool = mb_pool; dev->data->rx_queues[rx_queue_id] = &internals->rx_null_queues[rx_queue_id]; -- 2.51.0