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 1643AA04C7; Tue, 15 Sep 2020 10:45:32 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id EE4271BF83; Tue, 15 Sep 2020 10:45:31 +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 B539DDE0 for ; Tue, 15 Sep 2020 10:45:30 +0200 (CEST) Received: from mx1-us1.ppe-hosted.com (unknown [10.110.50.150]) by dispatch1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id 2B4BC20079; Tue, 15 Sep 2020 08:45:30 +0000 (UTC) Received: from us4-mdac16-3.at1.mdlocal (unknown [10.110.49.149]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id 29474800A3; Tue, 15 Sep 2020 08:45:30 +0000 (UTC) X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.110.49.32]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id BAC7D10004F; Tue, 15 Sep 2020 08:45:29 +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 513A4280063; Tue, 15 Sep 2020 08:45:29 +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; Tue, 15 Sep 2020 09:45:21 +0100 To: Gregory Etelson , CC: , , , "Gregory Etelson" , Ori Kam , "Thomas Monjalon" , Ferruh Yigit References: <20200625160348.26220-1-getelson@mellanox.com> <20200908201552.14423-1-getelson@nvidia.com> <20200908201552.14423-2-getelson@nvidia.com> From: Andrew Rybchenko Autocrypt: addr=arybchenko@solarflare.com; keydata= mQINBF2681gBEACbdTxu8eLL3UX2oAelsnK9GkeaJeUYSOHPJQpV7RL/iaIskqTwBRnhjXt7 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(10.17.10.4) X-TM-AS-Product-Ver: SMEX-12.5.0.1300-8.6.1012-25666.003 X-TM-AS-Result: No-14.264600-8.000000-10 X-TMASE-MatchedRID: y/2oPz6gbvjmLzc6AOD8DfHkpkyUphL9UKUfvbK5EWjiYlKox3ryNNvf z3SysnT1gnymeup0XW91v6vATKP45aeOtM+NJ84fOM7ns3UgBY3OoAXTAVKONSLT+St7cam6nSW EuKxy4hNiYDbhbzwJRs1o0zUMtl3EQVM4DsIX1BFwju9EALAXQoHLFWR93TgkB2QWi8BF5SiArq oIZrVn1+EoVRBj1QxgowpUDhPRXn1x7aMIXm/UAxlJRfzNw8afiFhr30/WaYwN+F513KGyq0o2p GnQ14ILRISKgOVdJO/jkXPpiQO8yVxxDx5qbkR9OX/V8P8ail1ZDL1gLmoa/PoA9r2LThYYKrau Xd3MZDUR9pRL+vGxmEPceTPZj8j7TAkjgiEACRGWDLw3IPy3RAyY2jBG2HIW X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--14.264600-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.6.1012-25666.003 X-MDID: 1600159530-2r7VS5aQkIU1 Subject: Re: [dpdk-dev] [PATCH v2 1/4] ethdev: allow negative values in flow rule types 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 9/8/20 11:15 PM, Gregory Etelson wrote: > From: Gregory Etelson > > RTE flow items & actions use positive values in item & action type. > Negative values are reserved for PMD private types. PMD > items & actions usually are not exposed to application and are not > used to create RTE flows. > > The patch allows applications with access to PMD flow > items & actions ability to integrate RTE and PMD items & actions > and use them to create flow rule. > > RTE flow library functions cannot work with PMD private items and > actions (elements) because RTE flow has no API to query PMD flow > object size. In the patch, PMD flow elements use object pointer. > RTE flow library functions handle PMD element object size as > size of a pointer. PMD handles its objects internally. > > Signed-off-by: Gregory Etelson > Acked-by: Ori Kam > --- > v2: > * Update commit log > --- > lib/librte_ethdev/rte_flow.c | 30 ++++++++++++++++++++++++------ > 1 file changed, 24 insertions(+), 6 deletions(-) > > diff --git a/lib/librte_ethdev/rte_flow.c b/lib/librte_ethdev/rte_flow.c > index f8fdd68fe9..9905426bc9 100644 > --- a/lib/librte_ethdev/rte_flow.c > +++ b/lib/librte_ethdev/rte_flow.c > @@ -564,7 +564,12 @@ rte_flow_conv_item_spec(void *buf, const size_t size, > } > break; > default: > - off = rte_flow_desc_item[item->type].size; > + /** > + * allow PMD private flow item > + */ > + off = (uint32_t)item->type <= INT_MAX ? It looks inconsistent to cast to uint32_t and compare vs INT_MAX. It should be either cast to 'unsigned int' or compare vs INT32_MAX. I think cast to 'unsigned int' is better for 'enum' values. But may be it should be 'int' and < 0 in fact to match the description that negative values are vendor-specific. > + rte_flow_desc_item[item->type].size : > + sizeof(void *); > rte_memcpy(buf, data, (size > off ? off : size)); > break; > } > @@ -667,7 +672,12 @@ rte_flow_conv_action_conf(void *buf, const size_t size, > } > break; > default: > - off = rte_flow_desc_action[action->type].size; > + /** > + * allow PMD private flow action > + */ > + off = (uint32_t)action->type <= INT_MAX ? Same > + rte_flow_desc_action[action->type].size : > + sizeof(void *); > rte_memcpy(buf, action->conf, (size > off ? off : size)); > break; > } > @@ -709,8 +719,12 @@ rte_flow_conv_pattern(struct rte_flow_item *dst, > unsigned int i; > > for (i = 0, off = 0; !num || i != num; ++i, ++src, ++dst) { > - if ((size_t)src->type >= RTE_DIM(rte_flow_desc_item) || > - !rte_flow_desc_item[src->type].name) > + /** > + * allow PMD private flow item > + */ > + if (((uint32_t)src->type <= INT_MAX) && Same > + ((size_t)src->type >= RTE_DIM(rte_flow_desc_item) || > + !rte_flow_desc_item[src->type].name)) > return rte_flow_error_set > (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, src, > "cannot convert unknown item type"); > @@ -798,8 +812,12 @@ rte_flow_conv_actions(struct rte_flow_action *dst, > unsigned int i; > > for (i = 0, off = 0; !num || i != num; ++i, ++src, ++dst) { > - if ((size_t)src->type >= RTE_DIM(rte_flow_desc_action) || > - !rte_flow_desc_action[src->type].name) > + /** > + * allow PMD private flow action > + */ > + if (((uint32_t)src->type <= INT_MAX) && Same > + ((size_t)src->type >= RTE_DIM(rte_flow_desc_action) || > + !rte_flow_desc_action[src->type].name)) > return rte_flow_error_set > (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, > src, "cannot convert unknown action type"); >