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 F07CEA0514; Wed, 15 Jan 2020 14:31:37 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 173E51BFED; Wed, 15 Jan 2020 14:31:37 +0100 (CET) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 8F6461BFE8 for ; Wed, 15 Jan 2020 14:31:35 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Jan 2020 05:31:34 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,322,1574150400"; d="scan'208";a="219279540" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.35]) ([10.237.221.35]) by fmsmga007.fm.intel.com with ESMTP; 15 Jan 2020 05:31:32 -0800 To: Ori Kam , Wenzhuo Lu , Jingjing Wu , Bernard Iremonger , John McNamara , Marko Kovacevic Cc: dev@dpdk.org, viacheslavo@mellanox.com, matan@mellanox.com References: <1578907777-194921-1-git-send-email-orika@mellanox.com> <1578907777-194921-2-git-send-email-orika@mellanox.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH 1/2] app/testpmd: add dynamic flag support 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 1/13/2020 9:29 AM, Ori Kam wrote: > DPDK now supports registration of dynamic flags (dynf) to the mbuf. > dynf can be given any name, and can be used with a supporting PMD or > supporting application. > > Due to the generic concept of the dynf, it is impossible and meaningless, > to define register set/get function for each flag. > This commit introduce a generic way to register and set/clear such flags. > > The basic syntax: > port config dynf +1 to command > > The first step the new flag is registered. Regardless if the action is > set or clear. > There is no way to unregister the flag, after registring it. > > The second step, if the action is set then we set the requested flag. > If this is the first flag that is enabled we also register a call back > for the Tx. In this call back we set the flag. > If the action is clear the requested flag is cleared, and if there > are no more flags that are set, the call back is removed. > > The reason that the set is only applied in Tx is that in case of Rx > it is assumed that the value comes from the PMD. > > If log is enabled the name of the flag, and value will be printed > in the packet info. > In order for the log to work correcly the registration of the flag > must be done before setting verbose. > > Signed-off-by: Ori Kam > Acked-by: Viacheslav Ovsiienko <...> > +++ b/app/test-pmd/cmdline.c > @@ -40,6 +40,7 @@ > #include > #include > #include > +#include > > #include > #include > @@ -70,6 +71,8 @@ > #include "cmdline_tm.h" > #include "bpf_cmd.h" > > +char dynf_names[64][RTE_MBUF_DYN_NAMESIZE]; > + I don't think 'cmdline.c' is good place for this global variable, can you please move it to 'testpmd.c' among other global variables and can you please add some comment as others do in that same file. <...> > +static void > +cmd_config_dynf_specific_parsed(void *parsed_result, > + __attribute__((unused)) struct cmdline *cl, > + __attribute__((unused)) void *data) > +{ > + struct cmd_config_tx_dynf_specific_result *res = parsed_result; > + struct rte_mbuf_dynflag desc_flag; > + int flag; > + uint64_t old_port_flags; > + > + if (port_id_is_invalid(res->port_id, ENABLED_WARN)) > + return; > + flag = rte_mbuf_dynflag_lookup(res->name, NULL); > + if (flag <= 0) { > + strcpy(desc_flag.name, res->name); > + desc_flag.flags = 0; > + flag = rte_mbuf_dynflag_register(&desc_flag); > + if (flag < 0) { > + printf("Can't register flag"); "\n" is missing, which prevents the io buffer to be flushed and the log displayed (at least for a long time). <...> > @@ -193,6 +200,9 @@ struct rte_port { > /**< metadata value to insert in Tx packets. */ > uint32_t tx_metadata; > const struct rte_eth_rxtx_callback *tx_set_md_cb[RTE_MAX_QUEUES_PER_PORT+1]; > + /**< dynamic flags. */ > + uint64_t dynf; Everywhe in this patch, variables/descriptions referred as 'dynf' or "dynamic flags", I think it would be better to prefix 'mbuf' to it, in case in the fure we throw more dynamic stuff, just "dynamic flags" missing context. Yes, it will make variable names longer but I think it will be more clear. Not sure on the testpmd command though, no strong optinion but there I think context is clear enough to continue with 'dynf' ("port config dynf set|clear"). <...>