From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 3B61FA052B; Wed, 29 Jul 2020 17:58:40 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id EA0C1F04; Wed, 29 Jul 2020 17:58:39 +0200 (CEST) Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [67.231.154.164]) by dpdk.org (Postfix) with ESMTP id BBF513B5 for ; Wed, 29 Jul 2020 17:58:38 +0200 (CEST) Received: from mx1-us1.ppe-hosted.com (unknown [10.110.50.144]) by dispatch1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id 2FD9020097; Wed, 29 Jul 2020 15:58:38 +0000 (UTC) Received: from us4-mdac16-74.at1.mdlocal (unknown [10.110.50.192]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id 2C8C5800A4; Wed, 29 Jul 2020 15:58:38 +0000 (UTC) X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.110.50.8]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id B60FF40070; Wed, 29 Jul 2020 15:58:37 +0000 (UTC) Received: from webmail.solarflare.com (uk.solarflare.com [193.34.186.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 47AB14C0090; Wed, 29 Jul 2020 15:58:37 +0000 (UTC) Received: from [192.168.38.17] (10.17.10.39) by ukex01.SolarFlarecom.com (10.17.10.4) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 29 Jul 2020 16:58:30 +0100 To: Olivier Matz , Yuying Zhang CC: , , , "Ferruh Yigit" , References: <20200728085531.204296-1-yuying.zhang@intel.com> <20200728092907.GT5869@platinum> From: Andrew Rybchenko Autocrypt: addr=arybchenko@solarflare.com; keydata= mQINBF2681gBEACbdTxu8eLL3UX2oAelsnK9GkeaJeUYSOHPJQpV7RL/iaIskqTwBRnhjXt7 j9UEwGA+omnOmqQMpeQTb/F9Ma2dYE+Hw4/t/1KVjxr3ehFaASvwR4fWJfO4e2l/Rk4rG6Yi 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No-14.271200-8.000000-10 X-TMASE-MatchedRID: 1GZI+iG+MtfmLzc6AOD8DfHkpkyUphL9iRPU6vvejXK3xvpmHsRmxdno quRwHY3BpU3N5dEaVOP1ETEK3YMZeCItLfytRhvkfid4LSHtIAMmKH/Kj46+VQg2kgWdt3qaQmZ 9+1UBYL2VxBgyOuwMWaKT+xko6AZv6R88738ZQPU9oFMnLLzjBZY4MP/LOm93B2QWi8BF5SiKW8 BvXyLiE5kZ5mcFfUUw07N+F7q2pmLcBsi50tRUnVHmrymVJ0uQgMLeOhIhBoS8rUtbtWe8+hm2j XxDuI1jTtgU2YBJ6znUPl8UoxD/2eomz8uXi5Uv9VjtTc1fwmA6En2bnefhoJj+eLysI+/go8WM kQWv6iUD0yuKrQIMCAGLeSok4rrZC24oEZ6SpSkj80Za3RRg8D3b22Ap7u6TZs2DNJKVoNr9D/H OtVupllJqn7VADXEjbep4dJ3uxyE= X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--14.271200-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.6.1012-25570.005 X-MDID: 1596038318-kHFrwkf-uah4 Subject: Re: [dpdk-dev] [PATCH v1] net: fix TSO packet checksum incorrect X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 7/28/20 12:29 PM, Olivier Matz wrote: > Hi, > > On Tue, Jul 28, 2020 at 08:55:31AM +0000, Yuying Zhang wrote: >> The ol_flags check lacks of PKT_TX_IPV6 which causes checksum >> flag configuration error while IPv6/TCP TSO packet is sent. >> This patch fixes the issue using PKT_TX_OFFLOAD_MASK. >> >> Fixes: 520059a41aa9 ("net: check fragmented headers in non-debug as well") >> >> Signed-off-by: Yuying Zhang >> --- >> lib/librte_net/rte_net.h | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/lib/librte_net/rte_net.h b/lib/librte_net/rte_net.h >> index 1edc283a4..4b617ab4c 100644 >> --- a/lib/librte_net/rte_net.h >> +++ b/lib/librte_net/rte_net.h >> @@ -125,7 +125,7 @@ rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags) >> * Mainly it is required to avoid fragmented headers check if >> * no offloads are requested. >> */ >> - if (!(ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK))) >> + if (!(ol_flags & PKT_TX_OFFLOAD_MASK)) >> return 0; >> >> if (ol_flags & (PKT_TX_OUTER_IPV4 | PKT_TX_OUTER_IPV6)) >> -- >> 2.25.1 >> > > I think the PKT_TX_TCP_SEG flag is missing in the test above, it > should be like this: > > if (!(ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK | PKT_TX_TCP_SEG))) > > It would be more precise than having the whole list of offload flags. > > The reason is because in case of TSOv4, there is always the flag > PKT_TX_IP_CKSUM, so this test is always wrong and we continue in the > function. In case of TSOv6, there is neither PKT_TX_IP_CKSUM nor > PKT_TX_L4_TCP (which is not mandatory, the doc says that PKT_TX_TCP_SEG > implies PKT_TX_L4_TCP). I thought that PKT_TX_L4_TCP is required anyway and missed the fact that PKT_TX_TCP_SEG implies PKT_TX_L4_TCP. Thanks. > > Thanks for spotting this. Can you please submit a v2 with > PKT_TX_TCP_SEG? > > Olivier >