I think there may be more than just changing the MAC. The Mellanox documentation talks about unbinding and re-binding the VF. The odd thing is that the MAC for the VF under the parent adapter is '0', but the adapter itself has a MAC address. You had a good idea, but I think we are still missing something. I do think that changing the MAC is the right thing to get the GUID changed according to the Mellanox documentation. 4: rs81p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 link/ether 24:8a:07:1e:7c:60 brd ff:ff:ff:ff:ff:ff vf 0 MAC 12:34:56:78:9a:bc, spoof checking off, link-state auto vf 1 MAC 00:00:00:00:00:00, spoof checking off, link-state auto 8: rs81p1v1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether e6:17:5f:85:45:e6 brd ff:ff:ff:ff:ff:ff 17: rs81p1v0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 link/ether ee:af:9f:66:2b:0c brd ff:ff:ff:ff:ff:ff # ibv_devices device node GUID ------ ---------------- mlx5_0 248a0703001e7c60 mlx5_2 0000000000000000 mlx5_4 0000000000000000 ---------------- Robert LeBlanc PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 On Wed, May 31, 2017 at 2:28 AM, Majd Dibbiny <majd@xxxxxxxxxxxx> wrote: > >> On May 30, 2017, at 8:55 PM, Robert LeBlanc <robert@xxxxxxxxxxxxx> wrote: >> >> One problem we found with rping is that when the GUID is '0', it >> fails. However, all of the VFs that are created are created with a '0' >> GUID. How do I generate a GUID that will not conflict for the VFs? > Hi Robert, > > IIRC, once you set a MAC address for a VF, the node guid will be derived automatically for it. Also, it can be controlled using iptool. > > >> Once I have a generated GUID, how do I set it on a VF using the inbox >> drivers? I can't find a /sys entry that will allow me to write it and >> the one mentioned in the Mellanox OFED doesn't exist. >> >> I'll need to find a way to script this as part of my udev rules that >> adds the VFs. >> >> Thank you, >> ---------------- >> Robert LeBlanc >> PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-rdma" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
