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 4702CA00C4; Thu, 31 Oct 2019 15:58:22 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 6D7751C2A9; Thu, 31 Oct 2019 15:58:21 +0100 (CET) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id CA5451C2A4 for ; Thu, 31 Oct 2019 15:58:19 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 31 Oct 2019 07:58:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,252,1569308400"; d="scan'208";a="375268952" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.9]) ([10.237.221.9]) by orsmga005.jf.intel.com with ESMTP; 31 Oct 2019 07:58:15 -0700 To: "Wang, Haiyue" , Jerin Jacob Cc: Thomas Monjalon , dpdk-dev , "Ye, Xiaolong" , "Kinsella, Ray" , "Iremonger, Bernard" , "Sun, Chenmin" , Andrew Rybchenko , Slava Ovsiienko , Stephen Hemminger , David Marchand , Jerin Jacob References: <20191015075133.38560-1-haiyue.wang@intel.com> <1811898.7XjjD7ZjLQ@xps> <12001140.UMXFOKstgs@xps> From: Ferruh Yigit Openpgp: preference=signencrypt 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 v4 1/4] ethdev: add the API for getting burst mode information 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 10/31/2019 11:16 AM, Wang, Haiyue wrote: >> -----Original Message----- >> From: Jerin Jacob >> Sent: Thursday, October 31, 2019 18:46 >> To: Wang, Haiyue >> Cc: Yigit, Ferruh ; Thomas Monjalon ; dpdk-dev >> ; Ye, Xiaolong ; Kinsella, Ray ; >> Iremonger, Bernard ; Sun, Chenmin ; Andrew >> Rybchenko ; Slava Ovsiienko ; Stephen Hemminger >> ; David Marchand ; Jerin Jacob >> >> Subject: Re: [dpdk-dev] [PATCH v4 1/4] ethdev: add the API for getting burst mode information >> >>>> 'rte_eth_burst_mode_option_name()' can get "struct rte_eth_burst_mode" as >>>> parameter and convert the 'options' to string and combine into single string as >>>> a helper function to the applications. >>>> >>> >>> Change: >>> const char * >>> rte_eth_burst_mode_option_name(uint64_t option) >>> >>> to: >>> int >>> rte_eth_burst_mode_option_name(struct rte_eth_burst_mode *mode, char *str) ? >> >> >> Since we are not ready to _remove_ flags in public API and rc2 time is >> ticking, probably the following the change >> would be enough. IMO, This API can be used only for logging purpose, I >> don't want to spend too >> many cycles on this discussion. I am leaving the decision to ethdev >> maintainers to accommodate >> the specifics of adding a string-based alternate options scheme. >> > > Thanks, Jerin. > >> >> [master][dpdk.org] $ git diff >> diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h >> index c36c1b631..2f9d2c0a7 100644 >> --- a/lib/librte_ethdev/rte_ethdev.h >> +++ b/lib/librte_ethdev/rte_ethdev.h >> @@ -1272,8 +1272,11 @@ enum rte_eth_burst_mode_option { >> * Ethernet device RX/TX queue packet burst mode information structure. >> * Used to retrieve information about packet burst mode setting. >> */ >> +#define RTE_ETH_BURST_MODE_ALT_OPT_SIZE 128 Should we make it bigger to prevent ABI break just because of this later? Like 512 or bigger? >> + >> struct rte_eth_burst_mode { >> uint64_t options; >> + char alternate_options[RTE_ETH_BURST_MODE_ALT_OPT_SIZE]; >> }; > > +1 > +1 It is not as flexible as getting the size from the PMD but much simpler, both for the user and PMD. And what about dropping the 'rte_eth_burst_mode_option_name()', if 'rte_eth_tx_burst_mode_get()' converts the 'options' to text ('alternate_options') as Jerin suggested, we can drop it. So only difference from what Jerin suggested will be keeping 'uint64_t options' public for known/limited standardized options, which is currently only for vectorization information.