From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 2C62C1B43D; Tue, 26 Mar 2019 17:50:54 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Mar 2019 09:50:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,273,1549958400"; d="scan'208";a="158573501" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.46]) ([10.237.221.46]) by fmsmga001.fm.intel.com with ESMTP; 26 Mar 2019 09:50:51 -0700 To: Chas Williams <3chas3@gmail.com>, dev@dpdk.org, olivier.matz@6wind.com Cc: Bill Hong , stable@dpdk.org, Chas Williams , Andrew Rybchenko References: <20190325150541.12087-1-3chas3@gmail.com> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; prefer-encrypt=mutual; keydata= mQINBFXZCFABEADCujshBOAaqPZpwShdkzkyGpJ15lmxiSr3jVMqOtQS/sB3FYLT0/d3+bvy qbL9YnlbPyRvZfnP3pXiKwkRoR1RJwEo2BOf6hxdzTmLRtGtwWzI9MwrUPj6n/ldiD58VAGQ +iR1I/z9UBUN/ZMksElA2D7Jgg7vZ78iKwNnd+vLBD6I61kVrZ45Vjo3r+pPOByUBXOUlxp9 GWEKKIrJ4eogqkVNSixN16VYK7xR+5OUkBYUO+sE6etSxCr7BahMPKxH+XPlZZjKrxciaWQb +dElz3Ab4Opl+ZT/bK2huX+W+NJBEBVzjTkhjSTjcyRdxvS1gwWRuXqAml/sh+KQjPV1PPHF YK5LcqLkle+OKTCa82OvUb7cr+ALxATIZXQkgmn+zFT8UzSS3aiBBohg3BtbTIWy51jNlYdy ezUZ4UxKSsFuUTPt+JjHQBvF7WKbmNGS3fCid5Iag4tWOfZoqiCNzxApkVugltxoc6rG2TyX CmI2rP0mQ0GOsGXA3+3c1MCdQFzdIn/5tLBZyKy4F54UFo35eOX8/g7OaE+xrgY/4bZjpxC1 1pd66AAtKb3aNXpHvIfkVV6NYloo52H+FUE5ZDPNCGD0/btFGPWmWRmkPybzColTy7fmPaGz cBcEEqHK4T0aY4UJmE7Ylvg255Kz7s6wGZe6IR3N0cKNv++O7QARAQABtCVGZXJydWggWWln aXQgPGZlcnJ1aC55aWdpdEBpbnRlbC5jb20+iQJVBBMBAgA/AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBNI2U4dCLsKE45mBx/kz60PfE2EfBQJbughWBQkHwjOGAAoJEPkz60Pf E2Eft84QAIbKWqhgqRfoiw/BbXbA1+qm2o4UgkCRQ0yJgt9QsnbpOmPKydHH0ixCliNz1J8e mRXCkMini1bTpnzp7spOjQGLeAFkNFz6BMq8YF2mVWbGEDE9WgnAxZdi0eLY7ZQnHbE6AxKL SXmpe9INb6z3ztseFt7mqje/W/6DWYIMnH3Yz9KzxujFWDcq8UCAvPkxVQXLTMpauhFgYeEx Nub5HbvhxTfUkapLwRQsSd/HbywzqZ3s/bbYMjj5JO3tgMiM9g9HOjv1G2f1dQjHi5YQiTZl 1eIIqQ3pTic6ROaiZqNmQFXPsoOOFfXF8nN2zg8kl/sSdoXWHhama5hbwwtl1vdaygQYlmdK H2ueiFh/UvT3WG3waNv2eZiEbHV8Rk52Xyn2w1G90lV0fYC6Ket1Xjoch7kjwbx793Kz/RfQ rmBY8/S4DTGn3oq3dMdQY+b6+7VMUeLMMh2CXYO9ErkOq+qNTD1IY+cBAkXnaDbQfz0zbste ZGWH74FAZ9nCpDOqbRTrBL42aMGhfOWEyeA1x7+hl6JZfabBWAuf4nnCXuorKHzBXTrf7u7p fXsKQClWRW77PF1VmzrtKNVSytQAmlCWApQIw20AarFipXmVdIjHmJPU611WoyxZPb4JTOxx 5cv9B+nr/RIB+v5dcStyHCCwO1be7nBDdCgd4F6kTQPLuQINBFfWTL4BEACnNA29e8TarUsB L5n6eLZHXcFvVwNLVlirWOClHXf44o2KnN3ww+eBEmKVfEFo9MSuGDNHS8Zw1NiGMYxLIUgd U6gGrVVs/VrQWL82pbMk6jCj98N+BXIri+6K1z+AImz7ax7iF1kDgRAnFWU0znWWBgM2mM8Y gDjcxfXk4sCKnvf6Gjo08Ey5zmqx7dekAKU2EEp8Q1EJY3jbymLdZWRP4AFFMTS1rGMk0/tt v71NBg1GobCcbNfn9chK/jhqxYhAJqq86RdJQkt3/9x1U1Oq0vXCt4JVVHmkxePtUiuWTTt+ aYlUAsKYZsWvncExvw77x2ArYDmaK0yfjh37wp0lY7DOJHFxoyT8tyWZlLci/VMRG2Ja33xj 0CN4C1yBg+QDeV3QFxQo42iA/ykdXPUR3ezmsND3XKvVLTC4DNb3V/EZQ7jBj64+bEK0VW4G B31VP00ApNQvSoczsIOAKdk97RNbpmPw6q10ILIB+9T1xbnFYzshzGF17oC0/GENIHATx8vZ masOZoDiOZQpeneLgnFE9JfzhLTxv6wNZcc/HLXRQVTkDsQr8ERtkAoHCf1E5+b5Yr7pfnE4 YuhET746o25S53ELUYPIs49qoJsEJL34/oexMfPGyPIlrbufiNyty5jc/1MRwUlhJlJ5IOHy ZUa+6CLR7GdImusFkPJUJwARAQABiQI8BBgBAgAmAhsMFiEE0jZTh0IuwoTjmYHH+TPrQ98T YR8FAlu6CHAFCQXE7zIACgkQ+TPrQ98TYR9nXxAAqNBgkYNyGuWUuy0GwDQCbu3iiMyH1+D7 llafPcK4NYy1Z4AYuVwC9nmLaoj+ozdqS3ncRo57ncRsKEJC46nDJJZYZ5LSJVn63Y3NBF86 lxQAgjj2oyZEwaLKtKbAFsXL43jv1pUGgSvWwYtDwHITXXFQto9rZEuUDRFSx4sg9OR+Q6/6 LY+nQQ3OdHlBkflzYMPcWgDcvcTAO6yasLEUf7UcYoSWTyMYjLB4QuNlXzTswzGVMssJF/vo V8lD1eqqaSUWG3STF6GVLQOr1NLvN5+kUBiEStHFxBpgSCvYY9sNV8FS6N24CAWMBl+10W+D 2h1yiiP5dOdPcBDYKsgqDD91/sP0WdyMJkwdQJtD49f9f+lYloxHnSAxMleOpyscg1pldw+i mPaUY1bmIknLhhkqfMmjywQOXpac5LRMibAAYkcB8v7y3kwELnt8mhqqZy6LUsqcWygNbH/W K3GGt5tRpeIXeJ25x8gg5EBQ0Jnvp/IbBYQfPLtXH0Myq2QuAhk/1q2yEIbVjS+7iowEZNyE 56K63WBJxsJPB2mvmLgn98GqB4G6GufP1ndS0XDti/2K0o8rep9xoY/JDGi0n0L0tk9BHyoP Y7kaEpu7UyY3nVdRLe5H1/MnFG8hdJ97WqnPS0buYZlrbTV0nRFL/NI2VABl18vEEXvNQiO+ vM8= Message-ID: <23cc0c89-0333-3300-6acb-e69d8d56c811@intel.com> Date: Tue, 26 Mar 2019 16:50:50 +0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190325150541.12087-1-3chas3@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH] net: fix Tx VLAN flag for offload emulation 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: , X-List-Received-Date: Tue, 26 Mar 2019 16:50:55 -0000 On 3/25/2019 3:05 PM, Chas Williams wrote: > From: Bill Hong > > A PMD might use rte_vlan_insert to implement Tx VLAN offload. Typically > the PMD will insert the VLAN header in the transmit path and then attempt > to send the packets. If this fails, the packets are returned to > the application which may attempt to send these packets again. If the > PKT_TX_VLAN flag is not cleared, the transmit path may attempt to insert > the VLAN header again. > > Fixes: 47aa48b969f8 ("net: fix stripped VLAN flag for offload emulation"); > Cc: stable@dpdk.org > > Signed-off-by: Bill Hong > Signed-off-by: Chas Williams > --- > lib/librte_net/rte_ether.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/lib/librte_net/rte_ether.h b/lib/librte_net/rte_ether.h > index c2c5e249f..e0d831113 100644 > --- a/lib/librte_net/rte_ether.h > +++ b/lib/librte_net/rte_ether.h > @@ -408,7 +408,7 @@ static inline int rte_vlan_insert(struct rte_mbuf **m) > vh = (struct vlan_hdr *) (nh + 1); > vh->vlan_tci = rte_cpu_to_be_16((*m)->vlan_tci); > > - (*m)->ol_flags &= ~PKT_RX_VLAN_STRIPPED; > + (*m)->ol_flags &= ~(PKT_RX_VLAN_STRIPPED | PKT_TX_VLAN); Hi Chas, Looks reasonable, AFAIK, PKT_TX_VLAN flag means 'mbuf->vlan_tci' has valid value and a request from application to driver to insert VLAN information. After successful insertion flag can be removed. But in mbuf header, flags documented as: PKT_TX_VLAN: TX packet is a 802.1q VLAN packet. PKT_TX_QINQ: TX packet with double VLAN inserted. Hi Oliver, Is above comments correct, or I am missing something J Also here cleaning 'PKT_RX_VLAN_STRIPPED' looks like to say 'vlan' information is not stripped but in the packet data, but 'RX' in this context can be confusing, should we have a more generic 'PKT_VLAN_STRIPPED' ? From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by dpdk.space (Postfix) with ESMTP id C0A8FA05D3 for ; Tue, 26 Mar 2019 17:50:56 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id BF78B1B449; Tue, 26 Mar 2019 17:50:55 +0100 (CET) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 2C62C1B43D; Tue, 26 Mar 2019 17:50:54 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Mar 2019 09:50:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,273,1549958400"; d="scan'208";a="158573501" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.46]) ([10.237.221.46]) by fmsmga001.fm.intel.com with ESMTP; 26 Mar 2019 09:50:51 -0700 To: Chas Williams <3chas3@gmail.com>, dev@dpdk.org, olivier.matz@6wind.com Cc: Bill Hong , stable@dpdk.org, Chas Williams , Andrew Rybchenko References: <20190325150541.12087-1-3chas3@gmail.com> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190325150541.12087-1-3chas3@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH] net: fix Tx VLAN flag for offload emulation 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" Message-ID: <20190326165050.a6h2J2IIDWEW6PFLOE2KjL0uWH9AkWvUXDBjOedUWBI@z> On 3/25/2019 3:05 PM, Chas Williams wrote: > From: Bill Hong > > A PMD might use rte_vlan_insert to implement Tx VLAN offload. Typically > the PMD will insert the VLAN header in the transmit path and then attempt > to send the packets. If this fails, the packets are returned to > the application which may attempt to send these packets again. If the > PKT_TX_VLAN flag is not cleared, the transmit path may attempt to insert > the VLAN header again. > > Fixes: 47aa48b969f8 ("net: fix stripped VLAN flag for offload emulation"); > Cc: stable@dpdk.org > > Signed-off-by: Bill Hong > Signed-off-by: Chas Williams > --- > lib/librte_net/rte_ether.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/lib/librte_net/rte_ether.h b/lib/librte_net/rte_ether.h > index c2c5e249f..e0d831113 100644 > --- a/lib/librte_net/rte_ether.h > +++ b/lib/librte_net/rte_ether.h > @@ -408,7 +408,7 @@ static inline int rte_vlan_insert(struct rte_mbuf **m) > vh = (struct vlan_hdr *) (nh + 1); > vh->vlan_tci = rte_cpu_to_be_16((*m)->vlan_tci); > > - (*m)->ol_flags &= ~PKT_RX_VLAN_STRIPPED; > + (*m)->ol_flags &= ~(PKT_RX_VLAN_STRIPPED | PKT_TX_VLAN); Hi Chas, Looks reasonable, AFAIK, PKT_TX_VLAN flag means 'mbuf->vlan_tci' has valid value and a request from application to driver to insert VLAN information. After successful insertion flag can be removed. But in mbuf header, flags documented as: PKT_TX_VLAN: TX packet is a 802.1q VLAN packet. PKT_TX_QINQ: TX packet with double VLAN inserted. Hi Oliver, Is above comments correct, or I am missing something J Also here cleaning 'PKT_RX_VLAN_STRIPPED' looks like to say 'vlan' information is not stripped but in the packet data, but 'RX' in this context can be confusing, should we have a more generic 'PKT_VLAN_STRIPPED' ?