On 3/9/2018 9:10 PM, Ophir Munk wrote: > This RFC suggests TAP TSO (TSP segmentation offload) implementation in SW. > It uses dpdk library rte_gso which is also used by testpmd. > Dpdk rte_gso library segments large TCP payloads (e.g. 64K bytes) > into smaller MTU size buffers. > By supporting TSO offload capability in software a TAP device can be used > as a failsafe sub device and be paired with another PCI device which > supports TSO capability in HW. > > This RFC includes 2 commits: > 1. Calculation of IP/TCP/UDP checksums for multi segments packets. > Previously checksum offload was skipped if the number of packet segments > was greater than 1. > This commit removes this limitation. It is required before supporting TAP TSO > since the generated small TCP packets may be composed by themselves by more > than > one segment. > 2. Core TAP TSO implementation: calling rte_gso_segment() segments > large TCP packets. > To be added: creation of a small private mbuf pool in TAP required by > librte_gso. > The number of buffers will be 64 - each of 128 bytes length. > > Ophir Munk (2): > net/tap: calculate checksum for multi segs packets > net/tap: implement TAP TSO
This is an RFC, and V1 not sent for the patch, is this still valid for this release or should we push into next one?
