Roland Dreier wrote:
I don't have any file like that in my system either. Not sure where
it might be coming from for you.
However, I do have /sys/class/infiniband_verbs/uverbs1/ibdev (which
should be present everywhere), and that has "cxgb3_0" in it, which you
could use to get to /sys/class/infiniband/cxgb3_0/<whatever>.
libibverbs does set up ibv_device.ibdev_path with that path, but it
happens too late for your library initialization function
unfortunately. So you can either wait until someone tries to create a
context and fail/warn then about firmware version, or you can
duplicate the libibverbs code to come up with that ibdev_path.
- R.
How does this look?
/*
* Verify that the firmware major number matches. Major number
* mismatches are fatal. Minor number mismatches are tolerated.
*/
if (ibv_read_sysfs_file(uverbs_sys_path, "ibdev",
ibdev, sizeof ibdev) < 0)
return NULL;
memset(devstr, 0, sizeof devstr);
snprintf(devstr, sizeof devstr, "%s/class/infiniband/%s",
ibv_get_sysfs_path(), ibdev);
if (ibv_read_sysfs_file(devstr, "fw_ver", value, sizeof value) < 0)
return NULL;
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