Robert Watson wrote: > This e-mail is just to remind device driver authors of something that I hope > they were already aware of: as FreeBSD has been shipping with a network stack > largely capable of running without Giant since the 5.x series, we will no > longer be accepting new network device drivers that require Giant > compatibility to function. This is true both for UP and SMP systems. > > Non-MPSAFE network device driver compatibility adds significant overhead to > the operation of the network stack, and non-MPSAFE network device drivers pay > a very high overhead to operate in the current environment. The > compatibility code also complicates calling components which do not hold > Giant, especially with regard to management ioctls. > > We have also discussed requiring that all network device drivers in the > system for 7.0 be able to operate MPSAFE. This runs into some issues due to > non-MPSAFEty of some key device driver subsystems, including Firewire, USB, > and the TTY subsystem. Poul-Henning is in the process of working on MPSAFE > tty support, and I hope that people will step up to the plate to work on the > remaining subsystems in the near future. That way we will be able to remove > the compatibility code, and continue cleanup and optimization work. > > Thanks, > > Robert N M Watson
Looks like there are no developers right now who could rewrite USB stack to be MPSAFE. So all USB-Ethernet are broken. I gald if I mistake. -- Dixi. Sem. _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "[EMAIL PROTECTED]"
