Method for offloading packet segmentations and device using the same
View Patent ↗A method for offloading packet segmentations includes the steps of retrieving a packet segmentation offloading parameter in a packet and segmenting the packet into a plurality of sub-packets by taking consideration the packet segmentation offloading parameter. A device for offloading packet segmentations includes a packet parser configured to receive a packet to be transmitted, a header buffer controller configured to retrieve a header of the packet and connected to a buffer to access the header, an extractor configured to retrieve a packet segmentation offloading parameter in the packet, and a segmentation module configured to segment the packet into a plurality of sub-packets by taking consideration the header and the packet segmentation offloading parameter.
1. A method for offloading packet segmentations, the method comprising:
retrieving a packet segmentation offloading parameter in a packet; and
segmenting the packet into a plurality of sub-packets by taking consideration the packet segmentation offloading parameter,
wherein the packet segmentation offloading parameter is recited in a checksum field of the packet.
2. The method of claim 1 , wherein the packet segmentation offloading parameter is recited in an internet protocol checksum field of the packet.
3. The method of claim 1 , wherein the packet segmentation offloading parameter is recited in a transmission control protocol checksum field of the packet.
4. The method of claim 1 , further comprising a step of retrieving the packet from a memory by using a direct memory access mechanism.
5. The method of claim 1 , being applied to a network interface device of a bus master.
6. The method of claim 1 , further comprising a step of receiving the packet from a host side.
7. The method of claim 1 , being applied to the network interface device of a bus slave.
8. A device for offloading packet segmentations, the device comprising:
a packet parser configured to receive a packet to be transmitted;
a header buffer controller configured to retrieve a header of the packet, and connected to a buffer to access the header;
an extractor configured to retrieve a packet segmentation offloading parameter in the packet; and
a segmenting module configured to segment the packet into a plurality of sub-packets by taking consideration the header and the packet segmentation offloading parameter,
wherein the extractor retrieves the packet segmentation offloading parameter from a checksum field of the packet.
9. The device of claim 8 , wherein the extractor retrieves the packet segmentation offloading parameter from an internet protocol checksum field of the packet.
10. The device of claim 8 , wherein the extractor retrieves the packet segmentation offloading parameter from a transmission control protocol checksum field of the packet.
11. The device of claim 8 , being applied to a network interface device of a bus master.
12. The device of claim 8 , being applied to a network interface device of a bus slave.