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Fri, 9 Apr 2021 10:56:12 +0000 From: Akhil Goyal To: Olivier Matz , Tejasree Kondoj , Konstantin Ananyev CC: Radu Nicolau , Anoob Joseph , Ankur Dwivedi , Jerin Jacob Kollanukkaran , "dev@dpdk.org" Thread-Topic: [EXT] Re: [dpdk-dev] [PATCH v3 2/4] mbuf: add packet type for UDP-ESP tunnel packets Thread-Index: AQHXLEwiwVQqHlDsoUKbtlFLy2Bd7aqqdt6AgAGKr8A= Date: Fri, 9 Apr 2021 10:56:12 +0000 Message-ID: References: <20210408081720.23314-1-ktejasree@marvell.com> <20210408081720.23314-3-ktejasree@marvell.com> <20210408111007.GT1650@platinum> In-Reply-To: <20210408111007.GT1650@platinum> Accept-Language: en-US Content-Language: en-US X-Mentions: konstantin.ananyev@intel.com X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: 6wind.com; dkim=none (message not signed) header.d=none;6wind.com; dmarc=none action=none header.from=marvell.com; x-originating-ip: [182.69.47.6] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 8bb3eada-715e-4a53-648a-08d8fb461740 x-ms-traffictypediagnostic: CO6PR18MB3971: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:10000; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: marvell.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MW2PR18MB2284.namprd18.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8bb3eada-715e-4a53-648a-08d8fb461740 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2021 10:56:12.7634 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: PoBuDypF7p2XpjZ3P9aOOOWh87qQb9VgVX6a/v0pYjpoiHc/sj/Mox/yyGltb3Y0ZOztJ33up5UuuXDQWzP6OQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO6PR18MB3971 X-Proofpoint-GUID: m7RnvbZ0mqUgA40i4kiNolvwJ8h80XRY X-Proofpoint-ORIG-GUID: m7RnvbZ0mqUgA40i4kiNolvwJ8h80XRY X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-04-09_05:2021-04-09, 2021-04-09 signatures=0 Subject: Re: [dpdk-dev] [EXT] Re: [PATCH v3 2/4] mbuf: add packet type for UDP-ESP tunnel packets X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 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" Hi Olivier, > On Thu, Apr 08, 2021 at 01:47:18PM +0530, Tejasree Kondoj wrote: > > Adding new mbuf packet type for UDP encapsulated > > ESP packets. > > > > Signed-off-by: Tejasree Kondoj > > --- > > doc/guides/rel_notes/release_21_05.rst | 5 +++++ > > lib/librte_mbuf/rte_mbuf_ptype.h | 21 +++++++++++++++++++++ > > 2 files changed, 26 insertions(+) > > > > diff --git a/doc/guides/rel_notes/release_21_05.rst > b/doc/guides/rel_notes/release_21_05.rst > > index 5565c7637c..c9e9e2ec22 100644 > > --- a/doc/guides/rel_notes/release_21_05.rst > > +++ b/doc/guides/rel_notes/release_21_05.rst > > @@ -55,6 +55,11 @@ New Features > > Also, make sure to start the actual text at the margin. > > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D > > > > +* **Added new packet type for UDP-ESP packets in mbuf.** > > + > > + Added new packet type ``RTE_PTYPE_TUNNEL_ESP_IN_UDP`` which can > be > > + used to identify UDP encapsulated ESP packets. > > + > > * **Enhanced ethdev representor syntax.** > > > > * Introduced representor type of VF, SF and PF. > > diff --git a/lib/librte_mbuf/rte_mbuf_ptype.h > b/lib/librte_mbuf/rte_mbuf_ptype.h > > index 17a2dd3576..bf92ce0c1a 100644 > > --- a/lib/librte_mbuf/rte_mbuf_ptype.h > > +++ b/lib/librte_mbuf/rte_mbuf_ptype.h > > @@ -491,6 +491,27 @@ extern "C" { > > * | 'destination port'=3D6635> > > */ > > #define RTE_PTYPE_TUNNEL_MPLS_IN_UDP 0x0000d000 > > +/** > > + * ESP-in-UDP tunneling packet type (RFC 3948). > > + * > > + * Packet format: > > + * <'ether type'=3D0x0800 > > + * | 'version'=3D4, 'protocol'=3D17 > > + * | 'destination port'=3D4500> > > + * or, > > + * <'ether type'=3D0x86DD > > + * | 'version'=3D6, 'next header'=3D17 > > + * | 'destination port'=3D4500> > > + * or, > > + * <'ether type'=3D0x0800 > > + * | 'version'=3D4, 'protocol'=3D17 > > + * | 'source port'=3D4500> > > + * or, > > + * <'ether type'=3D0x86DD > > + * | 'version'=3D6, 'next header'=3D17 > > + * | 'source port'=3D4500> > > + */ > > +#define RTE_PTYPE_TUNNEL_ESP_IN_UDP 0x0000e000 > > /** > > * Mask of tunneling packet types. > > */ >=20 > We arrive at the end of the values in packet type tunnel types, > and there is another pending patch that needs another tunnel type. >=20 > As there is already a RTE_PTYPE_TUNNEL_ESP, what would you think about > trying to reuse it, and differentiate IP/ESP from IP/UDP/ESP by using > the L4 layer type (unknown vs udp)? Or maybe add RTE_PTYPE_L4_NONE. >=20 > It is sensible, because it can be considered as an API change for > current users of RTE_PTYPE_TUNNEL_ESP. I don't really know how this > type is used by applications. It is OK to use combination of these two but with an assumption that a normal - IP-UDP packet when encrypted will be an IP-ESP packet And L4 types are reset from the mbuf->packet_type by the driver. @Konstantin Ananyev: Are you OK with this assumption? And, if we choose this path, then also we may need a macro in this file, So that application doesn't have to combine that explicitly for a standard = use case. #define RTE_PTYPE_TUNNEL_ESP_IN_UDP RTE_PTYPE_TUNNEL_ESP | RTE_PTYPE_= L4_UDP Will this be fine? >=20 > I think it is time to start thinking about how the packet_type > mbuf API can evolve to solve this issue. >=20 > By the way, the update of *rte_get_ptype_tunnel_name() is missing.