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From: Vamsi Krishna Attunuru Sent: Tuesday, February 14, 2023 2:22 PM To: orika@nvidia.com; dev@dpdk.org Subject: DPDK rte flow raw encap & decap actions Hi Ori Kam & dpdk dev team, For the below rte flow action types, the description sounds a bit confusing= to me. Description says the data must start with ETH header up to the tunn= el item. But the next following statement(that describes MPLSoGRE example) = mentions data just holds layer 2 header. Same is described for raw_decap ac= tion also. Could you please elaborate on what exactly data must hold and th= e expected actual packet's header(before/after the action) for the example = (MPLSoGRE) mentioned or for any other tunnel encap/decap types. /** * @warning * @b EXPERIMENTAL: this structure may change without prior notice * * RTE_FLOW_ACTION_TYPE_RAW_ENCAP * * Raw tunnel end-point encapsulation data definition. * * The data holds the headers definitions to be applied on the packet. * The data must start with ETH header up to the tunnel item header itself. * When used right after RAW_DECAP (for decapsulating L3 tunnel type for * example MPLSoGRE) the data will just hold layer 2 header. * * The preserve parameter holds which bits in the packet the PMD is not allo= wed * to change, this parameter can also be NULL and then the PMD is allowed * to update any field. * * size holds the number of bytes in @p data and @p preserve. */ struct rte_flow_action_raw_encap { uint8_t *data; /**< Encapsulation data. */ uint8_t *preserve; /**< Bit-mask of @p data to preserve on output. = */ size_t size; /**< Size of @p data and @p preserve. */ }; /** * @warning * @b EXPERIMENTAL: this structure may change without prior notice * * RTE_FLOW_ACTION_TYPE_RAW_DECAP * * Raw tunnel end-point decapsulation data definition. * * The data holds the headers definitions to be removed from the packet. * The data must start with ETH header up to the tunnel item header itself. * When used right before RAW_DECAP (for encapsulating L3 tunnel type for * example MPLSoGRE) the data will just hold layer 2 header. * * size holds the number of bytes in @p data. */ struct rte_flow_action_raw_decap { uint8_t *data; /**< Encapsulation data. */ size_t size; /**< Size of @p data and @p preserve. */ }; Regards Vamsi --_000_MWHPR18MB09422917327F58B02070304DA6A39MWHPR18MB0942namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

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From: Vamsi Krishna Attunuru
Sent: Tuesday, February 14, 2023 2:22 PM
To: orika@nvidia.com; dev@dpdk.org
Subject: DPDK rte flow raw encap & decap actions

 

Hi Ori Kam & dpdk dev team,

 

For the below rte flow action types, the description= sounds a bit confusing to me. Description says the data must start with ET= H header up to the tunnel item. But the next following statement(that descr= ibes MPLSoGRE example) mentions data just holds layer 2 header. Same is described for raw_decap action also. Co= uld you please elaborate on what exactly data must hold and the expected ac= tual packet’s header(before/after the action) for the example (MPLSoG= RE) mentioned or for any other tunnel encap/decap types.

 

/**

* @warning

* @b EXPERIMENTAL: this structure may change without= prior notice

*

* RTE_FLOW_ACTION_TYPE_RAW_ENCAP

*

* Raw tunnel end-point encapsulation data definition= .

*

* The data holds the headers definitions to be appli= ed on the packet.

* The data must start with ETH header up to the tunn= el item header itself.

* When used right after RAW_DECAP (for decapsulating= L3 tunnel type for

* example MPLSoGRE) the data will just hold layer 2 = header.

*

* The preserve parameter holds which bits in the pac= ket the PMD is not allowed

* to change, this parameter can also be NULL and the= n the PMD is allowed

* to update any field.

*

* size holds the number of bytes in @p data and @p p= reserve.

*/

struct rte_flow_action_raw_encap {

        uint8_t *= data; /**< Encapsulation data. */

        uint8_t *= preserve; /**< Bit-mask of @p data to preserve on output. */<= /p>

        size_t si= ze; /**< Size of @p data and @p preserve. */

};

 

/**

* @warning

* @b EXPERIMENTAL: this structure may change without= prior notice

*

* RTE_FLOW_ACTION_TYPE_RAW_DECAP

*

* Raw tunnel end-point decapsulation data definition= .

*

* The data holds the headers definitions to be remov= ed from the packet.

* The data must start with ETH header up to the tunn= el item header itself.

* When used right before RAW_DECAP (for encapsulatin= g L3 tunnel type for

* example MPLSoGRE) the data will just hold layer 2 = header.

*

* size holds the number of bytes in @p data.

*/

struct rte_flow_action_raw_decap {

        uint8_t *= data; /**< Encapsulation data. */

        size_t si= ze; /**< Size of @p data and @p preserve. */

};

 

Regards

Vamsi

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