> Since Tetsuo's patch already got merged, now this is the missing part
> for local port reservation.
>
> Cc: Roland Dreier<rdreier@xxxxxxxxx>
> Cc: Tetsuo Handa<penguin-kernel@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: WANG Cong<amwang@xxxxxxxxxx>
>
> ---
> diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
> index b930b81..7b89bab 100644
> --- a/drivers/infiniband/core/cma.c
> +++ b/drivers/infiniband/core/cma.c
> @@ -1978,6 +1978,7 @@ static int cma_alloc_any_port(struct idr *ps, struct rdma_id_private *id_priv)
> rover = net_random() % remaining + low;
> retry:
> if (last_used_port != rover&&
> + !inet_is_reserved_local_port(rover)&&
> !idr_find(ps, (unsigned short) rover)) {
> int ret = cma_alloc_port(ps, id_priv, rover);
> /*
Should this inet_is_reserved_local_port() test apply to all the "port
spaces" that this code is handling? I honestly am ignorant of the
intended semantics of the new local_reserved_ports stuff, hence my question.