On 11/26/24 11:36 PM, Zhu Yanjun wrote: > 在 2024/11/26 7:59, Boshi Yu 写道: >> Currently, the erdma driver supports both the iWARP and RoCEv2 protocols. >> The erdma driver reads the ERDMA_REGS_DEV_PROTO_REG register to identify >> the protocol used by the erdma device. Since each protocol requires >> different ib_device_ops, we introduce the erdma_device_ops_iwarp and >> erdma_device_ops_rocev2 for iWARP and RoCEv2 protocols, respectively. >> > Hi, Boshi > > From alomost all of the RDMA users, it seems that RoCEv2 protocol is required while very few users request iWARP protocol in their production hosts. But in the erdma HW/FW, this iWARP protocol is supported. Is this iWARP protocol for some special use cases in the Ali-Cloud environment? > Hi, Yanjun, iWarp & TCP have some good features, such as Tail Loss Probe(TLP), selective ACK and out-of-order DDP, so that can get better performance in large-scale lossy network. The current usage scenarios include HPC industrial simulation, redis, PolarDB and big data in public cloud environment. Thanks, Cheng Xu > I am just curious about this, not to be against this patch series. If this is related with the Ali-Cloud security, you can ignore this. > > Thanks, > Zhu Yanjun >
