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 B264BA04AE; Mon, 4 May 2020 17:54:24 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 21BE11D16B; Mon, 4 May 2020 17:54:24 +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 894411D168 for ; Mon, 4 May 2020 17:54:22 +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 EC5BA200D3; Mon, 4 May 2020 15:54:21 +0000 (UTC) Received: from us4-mdac16-19.at1.mdlocal (unknown [10.110.49.201]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id EE756800A3; Mon, 4 May 2020 15:54:21 +0000 (UTC) X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.110.50.12]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 67B65100076; Mon, 4 May 2020 15:54:21 +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 F3CAE4007B; Mon, 4 May 2020 15:54:20 +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 15.0.1395.4; Mon, 4 May 2020 16:54:15 +0100 To: Ivan Dyukov , Thomas Monjalon , , , , References: <4816966.qqrk5fENW1@thomas> <20200427095737.11082-1-i.dyukov@samsung.com> <20200427095737.11082-6-i.dyukov@samsung.com> <33f1d60f-2c31-5449-7e52-80951065ee9b@solarflare.com> <313dfabf-1e6c-b0a2-cde4-b19d0d4dbc84@samsung.com> From: Andrew Rybchenko Autocrypt: addr=arybchenko@solarflare.com; keydata= mQINBF2681gBEACbdTxu8eLL3UX2oAelsnK9GkeaJeUYSOHPJQpV7RL/iaIskqTwBRnhjXt7 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ukex01.SolarFlarecom.com (10.17.10.4) X-TM-AS-Product-Ver: SMEX-12.5.0.1300-8.5.1020-25394.003 X-TM-AS-Result: No-14.487300-8.000000-10 X-TMASE-MatchedRID: hls5oAVArl8eimh1YYHcKPZvT2zYoYOwC/ExpXrHizw7FE26mju9O1Me 5Blkpry7rdoLblq9S5pCJ8ZYRqTb4+fJixReoUHwLIRqQbCuh+6fJAVpWAwzYPo+OyIeksFJUgC 7uHFSrDJsmZC6qolIzTucUwEurQSLw+5bPEwCXuiCr5xa2StlIS+w46aA6jWZUjwRJy6Lq0MmSk SBaVwPgfgZrwoNuiyMJkB8cahV/fm/Gb0damHTm9B/IoRhBzVHNV9S7O+u3KZ+SLLtNOiBhsCFO gbeAbERuLA+OAWN1y639+x7XcbqseVHGbcDbAq6gxsfzkNRlfKx5amWK2anSPoLR4+zsDTtyMdy HKes7lvOXYkWNrdgvvk15TGsqjotLDMsUB4nJmJ5TYBjYfptlw== X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--14.487300-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.5.1020-25394.003 X-MDID: 1588607661-T3qYOsivKxL2 Subject: Re: [dpdk-dev] [PATCH v1 5/6] doc: update sample app with unknown speed 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 5/4/20 6:46 PM, Ivan Dyukov wrote: > 03.05.2020 16:57, Andrew Rybchenko пишет: >> On 5/2/20 10:35 PM, Ivan Dyukov wrote: >>> 01.05.2020 16:28, Andrew Rybchenko пишет: >>>> On 4/27/20 12:57 PM, Ivan Dyukov wrote: >>>>> Signed-off-by: Ivan Dyukov >>>>> --- >>>>>   doc/guides/sample_app_ug/link_status_intr.rst | 3 ++- >>>>>   1 file changed, 2 insertions(+), 1 deletion(-) >>>>> >>>>> diff --git a/doc/guides/sample_app_ug/link_status_intr.rst >>>>> b/doc/guides/sample_app_ug/link_status_intr.rst >>>>> index 5283be8b7..6ebc707b7 100644 >>>>> --- a/doc/guides/sample_app_ug/link_status_intr.rst >>>>> +++ b/doc/guides/sample_app_ug/link_status_intr.rst >>>>> @@ -177,7 +177,8 @@ An example callback function that has been >>>>> written as indicated below. >>>>>               printf("Failed to get port %d link status: %s\n\n", >>>>>                      port_id, rte_strerror(-ret)); >>>>>           } else if (link.link_status) { >>>>> -            printf("Port %d Link Up - speed %u Mbps - %s\n\n", >>>>> port_id, (unsigned)link.link_speed, >>>>> +            printf("Port %d Link Up - speed %u%s - %s\n\n", port_id, >>>>> (unsigned)link.link_speed, >>>>> +                  (link.link_speed == UINT32_MAX) ? ("(UNKNOWN)") : >>>>> (" Mbps"), >>>>>                     (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? >>>>> ("full-duplex") : ("half-duplex")); >>>>>           } else >>>>>               printf("Port %d Link Down\n\n", port_id); >>>>> >>>> I think that 0 looks nicer than UINT32_MAX when printed as integer >>>> keeping in mind that it is unknown. >>>> >>> zero will mislead developers about real value of the link_speed. >>> therefore we should print real value of the speed or print nothing. e.g. >>> >>>    if (link.link_speed == UINT32_MAX) >>> >>>         printf("Port %d Link Up - speed UNKNOWN - %s\n\n", port_id, >>>                    (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? >>> ("full-duplex") : ("half-duplex")); >>>    else >>> >>>         printf("Port %d Link Up - speed %u Mbps - %s\n\n", port_id, >>> link.link_speed, >>> >>>                     (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? >>> ("full-duplex") : ("half-duplex")); >> I'm not sure about 0 to be misleading, but it could be. >> Above definitely will look better in stdout. >> The only problem is code duplication in many-many places. >> May be add simple function in ethdev to do it and use it in >> all examples? > Also we can introduce new printf specifier using > register_printf_specifier function or even rewrite %u which will print > UNKNOWN in case of > UINT32_MAX. True, but it is too libc-specific as far as I know. >> Please, wait more feedback before doing it. >> >>