diff options
| author | Roland Dreier <roland@purestorage.com> | 2012-02-27 09:15:08 -0800 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2012-02-27 09:15:08 -0800 |
| commit | e9319b0cb00d4d68792fdae37e81e316cb632cb9 (patch) | |
| tree | 9947cf3123745e0cab9c587566a00a14e949459f /drivers/infiniband/core/sysfs.c | |
| parent | 6b21d18ed50c7d145220b0724ea7f2613abf0f95 (diff) | |
| download | lwn-e9319b0cb00d4d68792fdae37e81e316cb632cb9.tar.gz lwn-e9319b0cb00d4d68792fdae37e81e316cb632cb9.zip | |
IB/core: Fix SDR rates in sysfs
Commit 71eeba16 ("IB: Add new InfiniBand link speeds") introduced a bug
where eg the rate for IB 4X SDR links iss displayed as "8.5 Gb/sec"
instead of "10 Gb/sec" as it used to be. Fix that.
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/core/sysfs.c')
| -rw-r--r-- | drivers/infiniband/core/sysfs.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index c61bca30fd2d..a860b6ddbb61 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -179,33 +179,37 @@ static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, { struct ib_port_attr attr; char *speed = ""; - int rate; + int rate = -1; /* in deci-Gb/sec */ ssize_t ret; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; - rate = (25 * attr.active_speed) / 10; - switch (attr.active_speed) { + case 1: + /* SDR */ + rate = 25; + break; case 2: speed = " DDR"; + rate = 50; break; case 4: speed = " QDR"; + rate = 100; break; case 8: speed = " FDR10"; - rate = 10; + rate = 100; break; case 16: speed = " FDR"; - rate = 14; + rate = 140; break; case 32: speed = " EDR"; - rate = 25; + rate = 250; break; } @@ -214,7 +218,7 @@ static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, return -EINVAL; return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", - rate, (attr.active_speed == 1) ? ".5" : "", + rate / 10, rate % 10 ? ".5" : "", ib_width_enum_to_int(attr.active_width), speed); } |