.. promise I'm done for now.

(God, it'd be nice to use git, or some web ui that lets me batch
review and commit things like this.)


-a


On 15 March 2015 at 14:32, Adrian Chadd <adr...@freebsd.org> wrote:
> Author: adrian
> Date: Sun Mar 15 21:32:11 2015
> New Revision: 280120
> URL: https://svnweb.freebsd.org/changeset/base/280120
>
> Log:
>   Add a new taskqueue (device specific, not net80211 ic->tq); use it for
>   device restart.
>
>   (Committers note - once scan overhaul and a few other things have been
>   fixed in net80211 to not block things in the taskqueue, this can disappear
>   and the device specific taskqueues in other drivers can also go away.)
>
>   PR:           kern/197143
>   Submitted by: Andriy Voskoboinyk <s3er...@gmail.com>
>
> Modified:
>   head/sys/dev/wpi/if_wpi.c
>   head/sys/dev/wpi/if_wpivar.h
>
> Modified: head/sys/dev/wpi/if_wpi.c
> ==============================================================================
> --- head/sys/dev/wpi/if_wpi.c   Sun Mar 15 21:30:20 2015        (r280119)
> +++ head/sys/dev/wpi/if_wpi.c   Sun Mar 15 21:32:11 2015        (r280120)
> @@ -532,6 +532,14 @@ wpi_attach(device_t dev)
>         TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc);
>         TASK_INIT(&sc->sc_start_task, 0, wpi_start_task, sc);
>
> +       sc->sc_tq = taskqueue_create("wpi_taskq", M_WAITOK,
> +           taskqueue_thread_enqueue, &sc->sc_tq);
> +       error = taskqueue_start_threads(&sc->sc_tq, 1, 0, "wpi_taskq");
> +       if (error != 0) {
> +               device_printf(dev, "can't start threads, error %d\n", error);
> +               goto fail;
> +       }
> +
>         wpi_sysctlattach(sc);
>
>         /*
> @@ -688,6 +696,9 @@ wpi_detach(device_t dev)
>
>                 wpi_stop(sc);
>
> +               taskqueue_drain_all(sc->sc_tq);
> +               taskqueue_free(sc->sc_tq);
> +
>                 callout_drain(&sc->watchdog_rfkill);
>                 callout_drain(&sc->tx_timeout);
>                 callout_drain(&sc->scan_timeout);
> @@ -2387,8 +2398,6 @@ wpi_intr(void *arg)
>         WPI_WRITE(sc, WPI_FH_INT, r2);
>
>         if (r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR)) {
> -               struct ieee80211com *ic = ifp->if_l2com;
> -
>                 device_printf(sc->sc_dev, "fatal firmware error\n");
>  #ifdef WPI_DEBUG
>                 wpi_debug_registers(sc);
> @@ -2397,7 +2406,7 @@ wpi_intr(void *arg)
>                 DPRINTF(sc, WPI_DEBUG_HW,
>                     "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" :
>                     "(Hardware Error)");
> -               ieee80211_runtask(ic, &sc->sc_reinittask);
> +               taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask);
>                 goto end;
>         }
>
> @@ -2950,10 +2959,9 @@ wpi_scan_timeout(void *arg)
>  {
>         struct wpi_softc *sc = arg;
>         struct ifnet *ifp = sc->sc_ifp;
> -       struct ieee80211com *ic = ifp->if_l2com;
>
>         if_printf(ifp, "scan timeout\n");
> -       ieee80211_runtask(ic, &sc->sc_reinittask);
> +       taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask);
>  }
>
>  static void
> @@ -2961,11 +2969,10 @@ wpi_tx_timeout(void *arg)
>  {
>         struct wpi_softc *sc = arg;
>         struct ifnet *ifp = sc->sc_ifp;
> -       struct ieee80211com *ic = ifp->if_l2com;
>
>         if_printf(ifp, "device timeout\n");
>         if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
> -       ieee80211_runtask(ic, &sc->sc_reinittask);
> +       taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask);
>  }
>
>  static int
>
> Modified: head/sys/dev/wpi/if_wpivar.h
> ==============================================================================
> --- head/sys/dev/wpi/if_wpivar.h        Sun Mar 15 21:30:20 2015        
> (r280119)
> +++ head/sys/dev/wpi/if_wpivar.h        Sun Mar 15 21:32:11 2015        
> (r280120)
> @@ -228,6 +228,9 @@ struct wpi_softc {
>         struct task             sc_radioon_task;
>         struct task             sc_start_task;
>
> +       /* Taskqueue */
> +       struct taskqueue        *sc_tq;
> +
>         /* Eeprom info. */
>         uint8_t                 cap;
>         uint16_t                rev;
>
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