Higher-layer-processing data in time-sensitive data blocks at a physical-layer-interface device
Examples of the present disclosure relate generally to implementing higher-layer processing on time-sensitive data blocks at a physical-layer-interface device. Some examples include logic to perform operations, the operations including providing data blocks to a physical-layer-interface device. The operations may also include adding dummy data into one or more time-sensitive data blocks of the data blocks being provided to the physical-layer-interface device. A size of the dummy data corresponding to a size of higher-layer-processing data. Other example operations may include removing higher-layer-processing data from a first ingressing data block. The other operations may also include removing a portion of the first ingressing data block and adding the portion to a subsequent ingressing data block. A size of the portion corresponding to the size of integrity-detection data. The other operations may also include removing the integrity-detection data from an ingressing data block. Related methods, systems, and devices are also disclosed.
1 . An apparatus comprising:
a circuit configured to provide data blocks to a physical-layer interface device, wherein the physical layer device includes logic configured to perform higher-layer processing on received data blocks, wherein the higher-layer processing includes operations associated with Open Systems Interconnection (OSI) layer 2 or higher and comprises adding higher-layer-processing data to the data blocks; and
a logic circuit configured to:
add dummy data into one or more time-sensitive data blocks of the data blocks, a size of the dummy data corresponding to a size of higher-layer-processing data such that the addition of the higher-layer-processing data at the physical-layer interface device does not disrupt timing of the one or more time-sensitive data blocks according to a time-sensitive networking (TSN) protocol; and
provide the data blocks, including the one or more time-sensitive data blocks, to the physical-layer interface device.
2 . The apparatus of claim 1 , wherein the higher-layer-processing data is related to one or more of: Media Access Control security, Internet Protocol security, a cryptographic process, and encapsulation.
3 . The apparatus of claim 1 , wherein time sensitivity of the data blocks is related to Time-Sensitive Networking.
4 . The apparatus of claim 1 , wherein the data blocks comprise one or more of Ethernet frames and Ethernet frame fragments.
5 . The apparatus of claim 1 , wherein:
the higher-layer-processing data comprises a security tag and integrity-detection data; the size of the security tag is a first number of bytes;
the size of the integrity-detection data is a second number of bytes; and
the size of the dummy data is a sum of the first number of bytes and the second number of bytes.
6 . The apparatus of claim 1 , comprising: the physical-layer-interface device including the logic configured to perform higher-layer processing on the received data blocks.
7 . A method comprising:
providing data blocks to a physical-layer-interface device, wherein the physical-layer interface includes logic configured to perform higher-layer processing on received data blocks, wherein the higher-layer processing includes operations associated with Open Systems Interconnection (OSI) layer 2 or higher and comprises adding higher-layer-processing data to the data blocks; and
adding dummy data into one or more time-sensitive data blocks of the data blocks being provided to the physical-layer-interface device, a size of the dummy data corresponding to a size of higher-layer-processing data such that the addition of the higher-layer-processing data at the physical-layer-interface device does not disrupt timing of the one or more time-sensitive data blocks according to a time-sensitive networking (TSN) protocol.
8 . The method of claim 7 , comprising egressing the data blocks at the physical-layer-interface device.
9 . The method of claim 7 , comprising while providing the data blocks to the physical-layer-interface device, waiting to provide each of one or more time-sensitive data blocks by a predetermined duration.
10 . The method of claim 9 , wherein:
the higher-layer-processing data comprises a security tag;
the size of the higher-layer-processing data is a first number of bytes; and the size of the dummy data is the first number of bytes.
11 . The method of claim 9 , wherein:
a size of integrity-detection data is a first number of bytes; and
the predetermined duration corresponds to a transmission time related to the first number of bytes.
12 . An apparatus, comprising: a physical-layer interface device, the physical-layer interface device configured to:
receive data blocks;
remove higher-layer-processing data from a first ingressing data block of the received data blocks, wherein the higher-layer processing of the higher-layer processing data includes operations associated with Open Systems Interconnection (OSI) layer 2 or higher and comprises removing higher-layer-processing data from the data blocks, wherein the higher-layer processing data removed from the first ingressing data block includes integrity-detection data;
remove a portion of the first ingressing data block; and
add the portion of the first ingressing data block to a subsequent ingressing data block, a size of the portion corresponding to a size of integrity-detection data such that the removal of the higher-layer-processing data at the physical-layer interface device does not render the ingressing data blocks too short according to a time-sensitive networking (TSN) protocol.
13 . The apparatus of claim 12 , wherein the higher-layer-processing data comprises data related to one or more of: Media Access Control security, Internet Protocol security, a cryptographic process, and encapsulation.
14 . The apparatus of claim 12 , wherein the received data blocks are time sensitive, time sensitivity of the received data blocks related to Time-Sensitive Networking.
15 . The apparatus of claim 12 , wherein the data blocks comprise Ethernet frame fragments.
16 . The apparatus of claim 12 , wherein the higher-layer-processing data comprises a security tag.
17 . The apparatus of claim 12 , wherein:
the size of the integrity-detection data is a first number of bytes; and the size of the portion is the first number of bytes.
18 . A method, comprising:
receiving data blocks;
removing higher-layer-processing data from a first ingressing data block of the received data blocks, wherein the higher-layer processing of the higher-layer processing data includes operations associated with Open Systems Interconnection (OSI) layer 2 or higher and comprises removing higher-layer-processing data from the data blocks, wherein removing the higher-layer processing data from the first ingressing data block includes removing integrity-detection data from the first ingressing data block; and
removing a portion of the first ingressing data block; and
adding the portion to a subsequent ingressing data block, a size of the portion corresponding to a size of integrity-detection data such that the removal of the higher-layer-processing data at a physical-layer interface device does not render the ingressing data blocks too short according to a time-sensitive networking (TSN) protocol.
19 . The method of claim 18 , wherein removing the integrity-detection data from the ingressing data block comprises removing the integrity-detection data from the subsequent ingressing data block.
20 . The method of claim 18 , comprising: removing from each of a number of ingressing data blocks a corresponding portion and adding a respective corresponding portion to an immediately-subsequent ingressing data block of the number of ingressing data blocks, a size of the corresponding portions corresponding to the size of the integrity-detection data.
21 . The method of claim 18 , comprising while receiving the data blocks, inserting dummy data into the first ingressing data block, a size of the dummy data corresponding to a sum of a size of the higher-layer-processing data and a size of the integrity-detection data.
22 . The apparatus of claim 1 , wherein the higher-layer processing includes operations associated with Open Systems Interconnection (OSI) layer 2 or higher.
23 . The method of claim 7 , wherein the higher-layer processing includes operations associated with Open Systems Interconnection (OSI) layer 2 or higher.