On Mon, Jun 19, 2017 at 12:03:44PM +0800, Tiwei Bie wrote: > On Sun, Jun 18, 2017 at 03:21:07PM +0800, Jiayu Hu wrote: > > Generic Receive Offload (GRO) is a widely used SW-based offloading > > technique to reduce per-packet processing overhead. It gains > > performance by reassembling small packets into large ones. This > > patchset is to support GRO in DPDK. To support GRO, this patch > > implements a GRO API framework. > > > > To enable more flexibility to applications, DPDK GRO is implemented as > > a user library. Applications explicitly use the GRO library to merge > > small packets into large ones. DPDK GRO provides two reassembly modes. > > One is called lightweigth mode, the other is called heavyweight mode. > > If applications want merge packets in a simple way, they can use > > lightweigth mode. If applications need more fine-grained controls, > > they can choose heavyweigth mode. > > > > rte_gro_reassemble_burst is the main reassembly API which is used in > > lightweigth mode and processes N packets at a time. For applications, > > performing GRO in lightweigth mode is simple. They just need to invoke > > rte_gro_reassemble_burst. Applications can get GROed packets as soon as > > rte_gro_reassemble_burst returns. > > > > rte_gro_reassemble is the main reassembly API which is used in > > lightweigth mode and processes one packet at a time. For applications, > > Should be heavyweight here?
Sorry for typo error. It should be 'heavyweight' here. > > > performing GRO in heavyweigth mode is relatively complicated. Before > > performing GRO, applications need to create a GRO table by > > rte_gro_tbl_create. Then they can use rte_gro_reassemble to process > > packets one by one. The processed packets are in the GRO table. If > > applications want to get them, applications need to manually flush > > them by flush APIs. > > > > Few typos: > > s/lightweigth/lightweight/g > s/heavyweigth/heavyweight/g > > Besides, it's a bit confusing. Based on your comments in below mail: > > http://dpdk.org/ml/archives/dev/2017-June/068113.html > > The rte_gro_reassemble_burst() is used in heavyweight mode. But it > is inconsistent with the description in above commit message. I am so sorry for these typo errors. rte_gro_reassemble_burst is used in lightweight mode and rte_gro_reassemble is used in heavyweight mode. Thanks, Jiayu > > Best regards, > Tiwei Bie
