RDMA/counter: Prevent QP counter binding if counters unsupported
In case of rdma_counter_init() fails, counter allocation and QP bind should not be allowed. Fixes:413d334750
("RDMA/counter: Add set/clear per-port auto mode support") Fixes:1bd8e0a9d0
("RDMA/counter: Allow manual mode configuration support") Signed-off-by: Mark Zhang <markz@mellanox.com> Reviewed-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Link: https://lore.kernel.org/r/20190807101819.7581-1-leon@kernel.org Signed-off-by: Doug Ledford <dledford@redhat.com>
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@ -38,6 +38,9 @@ int rdma_counter_set_auto_mode(struct ib_device *dev, u8 port,
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int ret;
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port_counter = &dev->port_data[port].port_counter;
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if (!port_counter->hstats)
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return -EOPNOTSUPP;
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mutex_lock(&port_counter->lock);
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if (on) {
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ret = __counter_set_mode(&port_counter->mode,
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@ -509,6 +512,9 @@ int rdma_counter_bind_qpn_alloc(struct ib_device *dev, u8 port,
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if (!rdma_is_port_valid(dev, port))
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return -EINVAL;
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if (!dev->port_data[port].port_counter.hstats)
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return -EOPNOTSUPP;
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qp = rdma_counter_get_qp(dev, qp_num);
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if (!qp)
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return -ENOENT;
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