From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id 4440F58FA; Wed, 14 Nov 2018 11:21:49 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Nov 2018 02:21:48 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,232,1539673200"; d="scan'208";a="96197245" Received: from irsmsx109.ger.corp.intel.com ([163.33.3.23]) by FMSMGA003.fm.intel.com with ESMTP; 14 Nov 2018 02:21:47 -0800 Received: from irsmsx155.ger.corp.intel.com (163.33.192.3) by IRSMSX109.ger.corp.intel.com (163.33.3.23) with Microsoft SMTP Server (TLS) id 14.3.408.0; Wed, 14 Nov 2018 10:21:10 +0000 Received: from irsmsx104.ger.corp.intel.com ([169.254.5.131]) by irsmsx155.ger.corp.intel.com ([169.254.14.44]) with mapi id 14.03.0415.000; Wed, 14 Nov 2018 10:21:09 +0000 From: "Lipiec, Herakliusz" To: "Wang, Dong1" , "Ananyev, Konstantin" , "dev@dpdk.org" CC: "thomas@monjalon.net" , "Burakov, Anatoly" , "stable@dpdk.org" Thread-Topic: [PATCH v2] example/ipv4_multicast: fix app hanging when using clone Thread-Index: AQHUe0b5QQRqlhfIIUyHwngG/euTEKVOjMiAgABuTICAABKHAIAAAbQg Date: Wed, 14 Nov 2018 10:21:09 +0000 Message-ID: References: <20181112204650.7175-1-herakliusz.lipiec@intel.com> <20181113114929.9269-1-herakliusz.lipiec@intel.com> <3E2E5017C928014B90FD7864A64F0B5514F74985@SHSMSX103.ccr.corp.intel.com> <2601191342CEEE43887BDE71AB977258010CEB7388@IRSMSX106.ger.corp.intel.com> <3E2E5017C928014B90FD7864A64F0B5514F74E83@SHSMSX103.ccr.corp.intel.com> In-Reply-To: <3E2E5017C928014B90FD7864A64F0B5514F74E83@SHSMSX103.ccr.corp.intel.com> Accept-Language: en-IE, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.0.400.15 dlp-reaction: no-action x-ctpclassification: CTP_NT x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiZjJlN2RhY2MtY2RiYi00MzljLWI2ZjItZjgwZThkZWZmMTY3IiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoiN2dPMkZmd1FaUStHd1pIQ1F6V3JrS3hvUFFBajdVOGtkcTBZdW51aUNlNEk0Tnc1ZTRmdWQ0emF6ZmpTcTFTcCJ9 x-originating-ip: [163.33.239.181] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [dpdk-dev] [PATCH v2] example/ipv4_multicast: fix app hanging when using clone 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: , X-List-Received-Date: Wed, 14 Nov 2018 10:21:50 -0000 Hi Dong, I think that if a developer is to manipulate ol_flags, then its onto that d= eveloper to take care of copying ol_flags . Regards Herakliusz > -----Original Message----- > From: Wang, Dong1 > Sent: Wednesday, November 14, 2018 10:09 AM > To: Ananyev, Konstantin ; Lipiec, Heraklius= z > ; dev@dpdk.org > Cc: thomas@monjalon.net; Burakov, Anatoly ; > stable@dpdk.org > Subject: RE: [PATCH v2] example/ipv4_multicast: fix app hanging when usin= g > clone >=20 > Hi Konstantin, >=20 > In this example, no flags be set by user, so no need to copy flags from o= riginal > mbuf. > I'm thinking about some DPDK developers may create their own application > based on this example, they add some flags before packet be cloned. >=20 > Regards, > Dong >=20 > -----Original Message----- > From: Ananyev, Konstantin > Sent: Wednesday, November 14, 2018 17:03 > To: Wang, Dong1 ; Lipiec, Herakliusz > ; dev@dpdk.org > Cc: thomas@monjalon.net; Burakov, Anatoly ; > stable@dpdk.org > Subject: RE: [PATCH v2] example/ipv4_multicast: fix app hanging when usin= g > clone >=20 > Hi Dong, >=20 > > Hi Herakliusz, > > > > Since pkt->ol_flags might set some other bits except > > IND_ATTACHED_MBUF, how about set its value to original pkt->ol_flag >=20 > It could be done, but not sure what is the point? > Which flags you think we need to copy from cloned mbuf (segment #2) to > new header? > Konstantin >=20 > > > > Regards, > > Dong > > > > -----Original Message----- > > From: Lipiec, Herakliusz > > Sent: Tuesday, November 13, 2018 19:49 > > To: dev@dpdk.org > > Cc: Ananyev, Konstantin ; Wang, Dong1 > > ; thomas@monjalon.net; Burakov, Anatoly > > ; Lipiec, Herakliusz > > ; stable@dpdk.org > > Subject: [PATCH v2] example/ipv4_multicast: fix app hanging when using > > clone > > > > The ipv4_multicast sample application was dropping packets when using > > mbuf clone. When creating an L2 header and copying metadata from the > > source packet, the ol_flags were also copied along with all the other > metadata. Because the cloned packet had IND_ATTACHED_MBUF flag set in > its ol_flags, this caused the packets to never be freed when using > rte_pktmbuf_free. > > Since copying ol_flags from the cloned packet is not necessary in the f= irst > place, just don't do it. > > > > Fixes: af75078fece3 ("first public release") > > CC: stable@dpdk.org > > > > Reported-by: Wang Dong > > Signed-off-by: Herakliusz Lipiec > > --- > > doc/guides/sample_app_ug/ipv4_multicast.rst | 1 - > > examples/ipv4_multicast/main.c | 2 -- > > 2 files changed, 3 deletions(-) > > > > diff --git a/doc/guides/sample_app_ug/ipv4_multicast.rst > > b/doc/guides/sample_app_ug/ipv4_multicast.rst > > index ce1474ec7..f6efa7f6f 100644 > > --- a/doc/guides/sample_app_ug/ipv4_multicast.rst > > +++ b/doc/guides/sample_app_ug/ipv4_multicast.rst > > @@ -319,7 +319,6 @@ It is the mcast_out_pkt() function that performs th= e > packet duplication (either > > hdr->pkt.in_port =3D pkt->pkt.in_port; > > hdr->pkt.vlan_macip =3D pkt->pkt.vlan_macip; > > hdr->pkt.hash =3D pkt->pkt.hash; > > - hdr->ol_flags =3D pkt->ol_flags; > > rte_mbuf_sanity_check(hdr, RTE_MBUF_PKT, 1); > > > > return hdr; > > diff --git a/examples/ipv4_multicast/main.c > > b/examples/ipv4_multicast/main.c index 4073a4907..428ca4694 100644 > > --- a/examples/ipv4_multicast/main.c > > +++ b/examples/ipv4_multicast/main.c > > @@ -266,8 +266,6 @@ mcast_out_pkt(struct rte_mbuf *pkt, int > use_clone) > > hdr->tx_offload =3D pkt->tx_offload; > > hdr->hash =3D pkt->hash; > > > > - hdr->ol_flags =3D pkt->ol_flags; > > - > > __rte_mbuf_sanity_check(hdr, 1); > > return hdr; > > } > > -- > > 2.17.1