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IB/core: Refactor rate_show to use ib_port_attr_to_rate()

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Update sysfs rate_show() to rely on ib_port_attr_to_speed_info() for
converting IB port speed and width attributes to data rate and speed
string.

Signed-off-by: Or Har-Toov <ohartoov@nvidia.com>
Reviewed-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Or Har-Toov 2025-12-18 17:58:40 +02:00 committed by Leon Romanovsky
parent 2941abac6d
commit d4adeff26c
1 changed files with 8 additions and 48 deletions
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56
drivers/infiniband/core/sysfs.c
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@ -292,62 +292,22 @@ static ssize_t cap_mask_show(struct ib_device *ibdev, u32 port_num,
static ssize_t rate_show(struct ib_device *ibdev, u32 port_num,
struct ib_port_attribute *unused, char *buf)
{
struct ib_port_speed_info speed_info;
struct ib_port_attr attr;
char *speed = "";
int rate; /* in deci-Gb/sec */
ssize_t ret;
ret = ib_query_port(ibdev, port_num, &attr);
if (ret)
return ret;
switch (attr.active_speed) {
case IB_SPEED_DDR:
speed = " DDR";
rate = 50;
break;
case IB_SPEED_QDR:
speed = " QDR";
rate = 100;
break;
case IB_SPEED_FDR10:
speed = " FDR10";
rate = 100;
break;
case IB_SPEED_FDR:
speed = " FDR";
rate = 140;
break;
case IB_SPEED_EDR:
speed = " EDR";
rate = 250;
break;
case IB_SPEED_HDR:
speed = " HDR";
rate = 500;
break;
case IB_SPEED_NDR:
speed = " NDR";
rate = 1000;
break;
case IB_SPEED_XDR:
speed = " XDR";
rate = 2000;
break;
case IB_SPEED_SDR:
default: /* default to SDR for invalid rates */
speed = " SDR";
rate = 25;
break;
}
ret = ib_port_attr_to_speed_info(&attr, &speed_info);
if (ret)
return ret;
rate *= ib_width_enum_to_int(attr.active_width);
if (rate < 0)
return -EINVAL;
return sysfs_emit(buf, "%d%s Gb/sec (%dX%s)\n", rate / 10,
rate % 10 ? ".5" : "",
ib_width_enum_to_int(attr.active_width), speed);
return sysfs_emit(buf, "%d%s Gb/sec (%dX%s)\n", speed_info.rate / 10,
speed_info.rate % 10 ? ".5" : "",
ib_width_enum_to_int(attr.active_width),
speed_info.str);
}
static const char *phys_state_to_str(enum ib_port_phys_state phys_state)