On Mon, Dec 21, 2015 at 08:20:29AM -0600, Christoph Lameter wrote:
> V2->V3: Add check for NOIETF mode and create special table
> for that case.
>
> Check if the extended counters are available and if so
> create the proper extended and additional counters.
>
> Reviewed-by: Hal Rosenstock <h...@mellanox.com>
> Signed-off-by: Christoph Lameter <c...@linux.com>
> ---
> drivers/infiniband/core/sysfs.c | 104
> +++++++++++++++++++++++++++++++++++++++-
> include/rdma/ib_pma.h | 1 +
> 2 files changed, 104 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
> index 34dcc23..b179fca 100644
> --- a/drivers/infiniband/core/sysfs.c
> +++ b/drivers/infiniband/core/sysfs.c
> @@ -320,6 +320,13 @@ struct port_table_attribute port_pma_attr_##_name = {
> \
> .attr_id = IB_PMA_PORT_COUNTERS , \
> }
>
> +#define PORT_PMA_ATTR_EXT(_name, _width, _offset) \
> +struct port_table_attribute port_pma_attr_ext_##_name = { \
> + .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
> + .index = (_offset) | ((_width) << 16), \
> + .attr_id = IB_PMA_PORT_COUNTERS_EXT , \
> +}
> +
> /*
> * Get a Perfmgmt MAD block of data.
> * Returns error code or the number of bytes retrieved.
> @@ -400,6 +407,11 @@ static ssize_t show_pma_counter(struct ib_port *p,
> struct port_attribute *attr,
> ret = sprintf(buf, "%u\n",
> be32_to_cpup((__be32 *)data));
> break;
> + case 64:
> + ret = sprintf(buf, "%llu\n",
> + be64_to_cpup((__be64 *)data));
> + break;
> +
> default:
> ret = 0;
> }
> @@ -424,6 +436,18 @@ static PORT_PMA_ATTR(port_rcv_data ,
> 13, 32, 224);
> static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
> static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
>
> +/*
> + * Counters added by extended set
> + */
> +static PORT_PMA_ATTR_EXT(port_xmit_data , 64, 64);
> +static PORT_PMA_ATTR_EXT(port_rcv_data , 64, 128);
> +static PORT_PMA_ATTR_EXT(port_xmit_packets , 64, 192);
> +static PORT_PMA_ATTR_EXT(port_rcv_packets , 64, 256);
> +static PORT_PMA_ATTR_EXT(unicast_xmit_packets , 64, 320);
> +static PORT_PMA_ATTR_EXT(unicast_rcv_packets , 64, 384);
> +static PORT_PMA_ATTR_EXT(multicast_xmit_packets , 64, 448);
> +static PORT_PMA_ATTR_EXT(multicast_rcv_packets , 64, 512);
> +
> static struct attribute *pma_attrs[] = {
> &port_pma_attr_symbol_error.attr.attr,
> &port_pma_attr_link_error_recovery.attr.attr,
> @@ -444,11 +468,65 @@ static struct attribute *pma_attrs[] = {
> NULL
> };
>
> +static struct attribute *pma_attrs_ext[] = {
> + &port_pma_attr_symbol_error.attr.attr,
> + &port_pma_attr_link_error_recovery.attr.attr,
> + &port_pma_attr_link_downed.attr.attr,
> + &port_pma_attr_port_rcv_errors.attr.attr,
> + &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
> + &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
> + &port_pma_attr_port_xmit_discards.attr.attr,
> + &port_pma_attr_port_xmit_constraint_errors.attr.attr,
> + &port_pma_attr_port_rcv_constraint_errors.attr.attr,
> + &port_pma_attr_local_link_integrity_errors.attr.attr,
> + &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
> + &port_pma_attr_VL15_dropped.attr.attr,
> + &port_pma_attr_ext_port_xmit_data.attr.attr,
> + &port_pma_attr_ext_port_rcv_data.attr.attr,
> + &port_pma_attr_ext_port_xmit_packets.attr.attr,
> + &port_pma_attr_ext_port_rcv_packets.attr.attr,
> + &port_pma_attr_ext_unicast_rcv_packets.attr.attr,
> + &port_pma_attr_ext_unicast_xmit_packets.attr.attr,
> + &port_pma_attr_ext_multicast_rcv_packets.attr.attr,
> + &port_pma_attr_ext_multicast_xmit_packets.attr.attr,
> + NULL
> +};
> +
> +static struct attribute *pma_attrs_noietf[] = {
> + &port_pma_attr_symbol_error.attr.attr,
> + &port_pma_attr_link_error_recovery.attr.attr,
> + &port_pma_attr_link_downed.attr.attr,
> + &port_pma_attr_port_rcv_errors.attr.attr,
> + &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
> + &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
> + &port_pma_attr_port_xmit_discards.attr.attr,
> + &port_pma_attr_port_xmit_constraint_errors.attr.attr,
> + &port_pma_attr_port_rcv_constraint_errors.attr.attr,
> + &port_pma_attr_local_link_integrity_errors.attr.attr,
> + &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
> + &port_pma_attr_VL15_dropped.attr.attr,
> + &port_pma_attr_ext_port_xmit_data.attr.attr,
> + &port_pma_attr_ext_port_rcv_data.attr.attr,
> + &port_pma_attr_ext_port_xmit_packets.attr.attr,
> + &port_pma_attr_ext_port_rcv_packets.attr.attr,
> + NULL
> +};
> +
> static struct attribute_group pma_group = {
> .name = "counters",
> .attrs = pma_attrs
> };
>
> +static struct attribute_group pma_group_ext = {
> + .name = "counters",
> + .attrs = pma_attrs_ext
> +};
> +
> +static struct attribute_group pma_group_noietf = {
> + .name = "counters",
> + .attrs = pma_attrs_noietf
> +};
> +
> static void ib_port_release(struct kobject *kobj)
> {
> struct ib_port *p = container_of(kobj, struct ib_port, kobj);
> @@ -521,6 +599,30 @@ err:
> return NULL;
> }
>
> +/*
> + * Figure out which counter table to use depending on
> + * the device capabilities.
> + */
> +static struct attribute_group *get_counter_table(struct ib_device *dev)
> +{
> + struct ib_class_port_info cpi;
> +
> + if (get_perf_mad(dev, 0, IB_PMA_CLASS_PORT_INFO,
> + &cpi, 40, sizeof(cpi)) >= 0) {
> +
> + if (cpi.capability_mask && IB_PMA_CLASS_CAP_EXT_WIDTH)
> + /* We have extended counters */
> + return &pma_group_ext;
> +
> + if (cpi.capability_mask && IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF)
> + /* But not the IETF ones */
> + return &pma_group_noietf;
> + }
> +
> + /* Fall back to normal counters */
> + return &pma_group;
> +}
> +
> static int add_port(struct ib_device *device, int port_num,
> int (*port_callback)(struct ib_device *,
> u8, struct kobject *))
> @@ -549,7 +651,7 @@ static int add_port(struct ib_device *device, int
> port_num,
> return ret;
> }
>
> - ret = sysfs_create_group(&p->kobj, &pma_group);
> + ret = sysfs_create_group(&p->kobj, get_counter_table(device));
Don't we need to change all the sysfs_remove_groups to use get_counter_table as
well?
Ira
> if (ret)
> goto err_put;
>
> diff --git a/include/rdma/ib_pma.h b/include/rdma/ib_pma.h
> index a5889f1..2f8a65c 100644
> --- a/include/rdma/ib_pma.h
> +++ b/include/rdma/ib_pma.h
> @@ -42,6 +42,7 @@
> */
> #define IB_PMA_CLASS_CAP_ALLPORTSELECT cpu_to_be16(1 << 8)
> #define IB_PMA_CLASS_CAP_EXT_WIDTH cpu_to_be16(1 << 9)
> +#define IB_PMA_CLASS_CAP_EXT_WIDTH_NOIETF cpu_to_be16(1 << 10)
> #define IB_PMA_CLASS_CAP_XMIT_WAIT cpu_to_be16(1 << 12)
>
> #define IB_PMA_CLASS_PORT_INFO cpu_to_be16(0x0001)
> --
> 2.5.0
>
>
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