On Mon, Dec 28, 2015 at 04:53:18PM -0500, Hal Rosenstock wrote:
>
> Port number is not part of ClassPortInfo attribute but is
> still needed as a parameter when invoking process_mad.
>
> To properly handle this attribute, port_num is added as a
> parameter to get_counter_table and get_perf_mad was changed
> not to store port_num in the attribute itself when it's
> querying the ClassPortInfo attribute.
>
> This handles issue pointed out by Matan Barak <mat...@dev.mellanox.co.il>
>
> Signed-off-by: Hal Rosenstock <h...@mellanox.com>
Reviewed-by: Ira Weiny <ira.we...@intel.com>
> Acked-by: Matan Barak <mat...@mellanox.com>
> ---
> diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
> index 539040f..2daf832 100644
> --- a/drivers/infiniband/core/sysfs.c
> +++ b/drivers/infiniband/core/sysfs.c
> @@ -438,7 +438,8 @@ static int get_perf_mad(struct ib_device *dev, int
> port_num, int attr,
> in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
> in_mad->mad_hdr.attr_id = attr;
>
> - in_mad->data[41] = port_num; /* PortSelect field */
> + if (attr != IB_PMA_CLASS_PORT_INFO)
> + in_mad->data[41] = port_num; /* PortSelect field */
>
> if ((dev->process_mad(dev, IB_MAD_IGNORE_MKEY,
> port_num, NULL, NULL,
> @@ -714,11 +715,12 @@ err:
> * Figure out which counter table to use depending on
> * the device capabilities.
> */
> -static struct attribute_group *get_counter_table(struct ib_device *dev)
> +static struct attribute_group *get_counter_table(struct ib_device *dev,
> + int port_num)
> {
> struct ib_class_port_info cpi;
>
> - if (get_perf_mad(dev, 0, IB_PMA_CLASS_PORT_INFO,
> + if (get_perf_mad(dev, port_num, IB_PMA_CLASS_PORT_INFO,
> &cpi, 40, sizeof(cpi)) >= 0) {
>
> if (cpi.capability_mask && IB_PMA_CLASS_CAP_EXT_WIDTH)
> @@ -776,7 +778,7 @@ static int add_port(struct ib_device *device, int
> port_num,
> goto err_put;
> }
>
> - p->pma_table = get_counter_table(device);
> + p->pma_table = get_counter_table(device, port_num);
> ret = sysfs_create_group(&p->kobj, p->pma_table);
> if (ret)
> goto err_put_gid_attrs;
--
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