----- Original Message ----- > On Mon, Aug 5, 2013 at 8:19 PM, Adrian Chadd <adrian_at_freebsd.org> wrote: > > > No, brian said two things: > > > > * the flag, protected by the core lock > > * per-queue flags > > > > i see no mentions on per-queue flags on his email. > This is the relevant part > Right, I just use the IFF_DRV_RUNNING flag. I think Adrian meant 'per-queue locks' here? > ------------ > > What I've done in my drivers is: > * Lock the core mutex > * Clear IFF_DRV_RUNNING > * Lock/unlock each queue's lock > > The various Rx/Tx queue functions check for IFF_DRV_RUNNING after > (re)acquiring their queue lock. See at vtnet_stop_rendezvous() at > [1] for an example. > > [1] > http://svnweb.freebsd.org/base/user/bryanv/vtnetmq/sys/dev/virtio/network/if_vtnet.c?revision=252451&view=markup > > ----------------- > > > > > > > > > > -adrian > > > > > > -- > -----------------------------------------+------------------------------- > Prof. Luigi RIZZO, rizzo_at_iet.unipi.it . Dip. di Ing. dell'Informazione > http://www.iet.unipi.it/~luigi/ . Universita` di Pisa > TEL +39-050-2211611 . via Diotisalvi 2 > Mobile +39-338-6809875 . 56122 PISA (Italy) > -----------------------------------------+------------------------------- >Received on Mon Aug 05 2013 - 19:01:54 UTC
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