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SoftRoCE / rxe-dev

Development Repository for RXE
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ibv_devinfo doesnt show link layer info #46

Open thamizh1990 opened 8 years ago

thamizh1990 commented 8 years ago

root@gl8:/home/gl8/Desktop/nvme_softroce/librxe-dev# ibv_devinfo hca_id: rxe0 transport: InfiniBand (0) fw_ver: 0.0.0 node_guid: 428d:5cff:fe35:bb12 sys_image_guid: 0000:0000:0000:0000 vendor_id: 0x0000 vendor_part_id: 0 hw_ver: 0x0 phys_port_cnt: 1 port: 1 state: PORT_ACTIVE (4) max_mtu: 4096 (5) active_mtu: 1024 (3) sm_lid: 0 port_lid: 0 port_lmc: 0x00

psebexen commented 8 years ago

Are there any additional symptoms related to the rxe0 device, or is this issue only about the ibv_devinfo output? Running ibv_devinfo -v should print more information or you can manually inspect the rxe0 device in /sys/class/infiniband/rxe0.

thamizh1990 commented 8 years ago

thanks for the solution, i have found the link_layer info in /sys/class/infiniband/rxe0 , i need some clearance , actually my environment setup is " two pc connected with ethernet cable" , can i able to test this SoftRoCE , or i need any other special fabrics interface

psebexen commented 8 years ago

Yes; your environment sounds sufficient. If the computers can send and receive normal IP traffic over Ethernet, they should be able to run the SoftRoCE driver. There are a number of user space packages, as listed in the wiki, that are helpful for using and configuring the connection, but the basic functionality is provided by code in the kernel source tree. If you are interested in how this works, I recommend looking at the end of the file drivers/infiniband/hw/rxe/rxe_net.c in this repository as a starting point - a UDP socket is created and some of the net device settings are configured there at initialization time.