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 EBC14A317C for ; Thu, 17 Oct 2019 18:05:00 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id C85481EA0D; Thu, 17 Oct 2019 18:04:59 +0200 (CEST) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id A13B11E9B8 for ; Thu, 17 Oct 2019 18:04:58 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Oct 2019 09:04:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,308,1566889200"; d="scan'208";a="199411752" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.10]) ([10.237.221.10]) by orsmga003.jf.intel.com with ESMTP; 17 Oct 2019 09:04:54 -0700 To: "Jakub Grajciar -X (jgrajcia - PANTHEON TECHNOLOGIES at Cisco)" , "dev@dpdk.org" Cc: Stephen Hemminger References: <20190709082254.12698-1-jgrajcia@cisco.com> <20190822081833.11203-1-jgrajcia@cisco.com> <0a3d8d8a-c66b-4015-3c63-6b14ee350651@intel.com> <519478de-25d7-729a-9ece-b1612b86e0ed@intel.com> 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 v5] net/memif: zero-copy slave 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 10/17/2019 12:52 PM, Jakub Grajciar -X (jgrajcia - PANTHEON TECHNOLOGIES at Cisco) wrote: > >> Hi Jakub, >> >> Just to double check if anyone is looking into the bind() error issue which is >> since following commit, I am waiting for more input on it. >> >> Commit b923866c6974 ("net/memif: allow for full key size in socket name") >> Cc: stephen@networkplumber.org > > Definitely an issue, I must have messed something up while applying the patch for testing, as it's not working for me either. I looked into bind() and it seems that the size has upper limit. Are you able to revert the patch? +1 to logically revert the patch, but actually I think it is easier to do an incremental patch on top of current head to fix the issue. The patch replaces hard-coded 'key_len' to a macro which is good to keep, also number of lines needs to be changed for fix looks less than number of lines will be changed by revert J > > As for the issue that patch addresses, there is an incorrect information in the docs that 'socket' parameter length is 256b. It should be 108b as that is the limitation on Linux. I don't know the doc but code has it as 256b [1] and the issue patch addresses looks like a valid issue. If you are OK to limit the 'key_len' to 108 [2], the fix is really easy. [1] http://lxr.dpdk.org/dpdk/v19.08/source/drivers/net/memif/memif_socket.h#L84 [2] If I remember correctly the suggested length was 99 for portability, it seems different OS has this value different and 99 is the smallest ...