Hi, in the kernel module for netmap we need to store some private data associated to each open netmap file descriptor.
Our current design uses devfs_set_cdevpriv() during the open() handler, but for some reason a subsequent devfs_get_cdevpriv(p) returns *p = NULL in additional threads created by the process that did the open(). The manpage devfs_set_cdevpriv() does not mention threads, and so i am a bit puzzled why the cdevpriv is only good for the original thread. In the linux version 'struct file' has a "private_data" field that we use for that purpose, and remains valid on all threads. i wonder if there is something similar we can use in FreeBSD. cheers luigi _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
