[PATCH rdma-next 4/4] nvme-rdma: add more error details when a QP moves to an error state

[Sagi Grimberg]

> From: Israel Rukshin <israelr at nvidia.com>
> 
> Add debug prints for fatal QP events that are helpful for finding the
> root cause of the errors. The ib_get_qp_err_syndrome is called at
> a work queue since the QP event callback is running on an
> interrupt context that can't sleep.
> 
> Signed-off-by: Israel Rukshin <israelr at nvidia.com>
> Reviewed-by: Max Gurtovoy <mgurtovoy at nvidia.com>
> Reviewed-by: Leon Romanovsky <leonro at nvidia.com>

What makes nvme-rdma special here? Why do you get this in
nvme-rdma and not srp/iser/nfs-rdma/rds/smc/ipoib etc?

This entire code needs to move to the rdma core instead
of being leaked to ulps.