> Steps: > mkdir /sys/kernel/config/rdma_cm/mlx5_0 > cat /sys/kernel/config/rdma_cm/mlx5_0/ports/1/default_roce_mode > #Above command tells whether default is RoCEv1 or v2. > > echo "RoCE v2" > > /sys/kernel/config/rdma_cm/mlx5_0/ports/1/default_roce_mode > > Above command will force to pick RoCEv2 GIDs by default when using > RDMACM based applications (if HCA supports it). Thanks, this worked, the step I was missing was that I have to do the mkdir command first. Looks like we're defaulting to v1. root@purley02:/home/rsa# mkdir /sys/kernel/config/rdma_cm/mlx5_0 root@purley02:/home/rsa# cat /sys/kernel/config/rdma_cm/mlx5_0/ports/1/default_roce_mode IB/RoCE v1 > RoCEv2 was made default in below patch. > > commit 3c7f67d1880db4bda8eed12ca603c92b5434390e > Author: Doug Ledford <dledford@xxxxxxxxxx> > Date: Fri Jul 28 13:47:24 2017 -0400 This is good to know! The patch looks to be from July 28 and we're running a kernel from August 6th so I guess we just missed picking up that change. I'll try loading a newer kernel and see if the default changes, and if not we can try the recommended steps to force it. root@purley02:/home/rsa# uname -a Linux purley02 4.12.5-041205-generic #201708061334 SMP Sun Aug 6 17:35:26 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux Thanks very much for the help. -- 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
