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RDMA/counters: Properly implement PID checks

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"Auto" configuration mode is called for visible in that PID
namespace and it ensures that all counters and QPs are coexist
in the same namespace and belong to same PID.

Fixes: 99fa331dc8 ("RDMA/counter: Add "auto" configuration mode support")
Reviewed-by: Mark Zhang <markz@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Link: https://lore.kernel.org/r/20190815083834.9245-3-leon@kernel.org
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Leon Romanovsky 2019-08-15 11:38:28 +03:00 committed by Doug Ledford
parent 948a7287b2
commit c8b32408b4
1 changed files with 3 additions and 5 deletions
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8
drivers/infiniband/core/counters.c
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@ -149,13 +149,11 @@ static bool auto_mode_match(struct ib_qp *qp, struct rdma_counter *counter,
struct auto_mode_param *param = &counter->mode.param;
bool match = true;
if (rdma_is_kernel_res(&counter->res) != rdma_is_kernel_res(&qp->res))
if (!rdma_is_visible_in_pid_ns(&qp->res))
return false;
/* Ensure that counter belong to right PID */
if (!rdma_is_kernel_res(&counter->res) &&
!rdma_is_kernel_res(&qp->res) &&
(task_pid_vnr(counter->res.task) != current->pid))
/* Ensure that counter belongs to the right PID */
if (task_pid_nr(counter->res.task) != task_pid_nr(qp->res.task))
return false;
if (auto_mask & RDMA_COUNTER_MASK_QP_TYPE)