https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285306
Bug ID: 285306
Summary: RDMA/libibverbs: active_speed value from ibv_devinfo
shows as invalid speed for 400G
Product: Base System
Version: 15.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Connected the 400G cable to Broadcom's Thor2 controllers and ibv_devinfo shows
the active speed as "invalid speed (128)" as shown below,
# ibv_devinfo -d bnxt_re2 -vv
hca_id: bnxt_re2
transport: InfiniBand (0)
fw_ver: 234.0.67.0
...
active_width: 4X (2)
active_speed: invalid speed (128)
phys_state: LINK_UP (5)
in file /usr/src/contrib/ofed/libibverbs/examples/devinfo.c
static const char *speed_str(uint8_t speed)
{
switch (speed) {
case 1: return "2.5 Gbps";
case 2: return "5.0 Gbps";
case 4: /* fall through */
case 8: return "10.0 Gbps";
case 16: return "14.0 Gbps";
case 32: return "25.0 Gbps";
case 64: return "50.0 Gbps";
default: return "invalid speed";
}
}
There is no case statement for speed value 128 ("IB_SPEED_NDR") and hence
active _speed shown as "invalid speed". Please update the devinfo.c to support
400G speed modules.
Thanks,
Sreekanth
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