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if_cx is currently disconnected from the build due to a dependence on

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the old TTY implementation; however, take a cut at stripping its
optional Giant-protected code paths enabled using debug.cx.mpsafenet,
which will no longer work once IFF_NEEDSGIANT is removed.
This commit is contained in:
Robert Watson 2009-02-19 00:06:01 +00:00
parent 1faa4dcb71
commit 8a520db77d
1 changed files with 10 additions and 32 deletions
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42
sys/dev/cx/if_cx.c
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@ -83,24 +83,9 @@ __FBSDID("$FreeBSD$");
#define CX_LOCK_NAME "cxX"
static int cx_mpsafenet = 1;
TUNABLE_INT("debug.cx.mpsafenet", &cx_mpsafenet);
SYSCTL_NODE(_debug, OID_AUTO, cx, CTLFLAG_RD, 0, "Cronyx Sigma Adapters");
SYSCTL_INT(_debug_cx, OID_AUTO, mpsafenet, CTLFLAG_RD, &cx_mpsafenet, 0,
"Enable/disable MPSAFE network support for Cronyx Sigma Adapters");
#define CX_LOCK(_bd) do { \
if (cx_mpsafenet) \
mtx_lock (&(_bd)->cx_mtx); \
} while (0)
#define CX_UNLOCK(_bd) do { \
if (cx_mpsafenet) \
mtx_unlock (&(_bd)->cx_mtx); \
} while (0)
#define CX_LOCK_ASSERT(_bd) do { \
if (cx_mpsafenet) \
mtx_assert (&(_bd)->cx_mtx, MA_OWNED); \
} while (0)
#define CX_LOCK(_bd) mtx_lock (&(_bd)->cx_mtx)
#define CX_UNLOCK(_bd) mtx_unlock (&(_bd)->cx_mtx)
#define CX_LOCK_ASSERT(_bd) mtx_assert (&(_bd)->cx_mtx, MA_OWNED)
typedef struct _async_q {
int beg;
@ -239,7 +224,7 @@ static struct cdevsw cx_cdevsw = {
.d_close = cx_close,
.d_ioctl = cx_ioctl,
.d_name = "cx",
.d_flags = D_TTY | D_NEEDGIANT,
.d_flags = D_TTY,
};
static int MY_SOFT_INTR;
@ -776,10 +761,10 @@ static int cx_attach (device_t dev)
return ENXIO;
}
b->sys = bd;
callout_init (&led_timo[b->num], cx_mpsafenet ? CALLOUT_MPSAFE : 0);
callout_init (&led_timo[b->num], CALLOUT_MPSAFE);
s = splhigh ();
if (bus_setup_intr (dev, bd->irq_res,
INTR_TYPE_NET|(cx_mpsafenet?INTR_MPSAFE:0),
INTR_TYPE_NET|INTR_MPSAFE,
NULL, cx_intr, bd, &bd->intrhand)) {
printf ("cx%d: Can't setup irq %ld\n", unit, irq);
bd->board = 0;
@ -849,8 +834,7 @@ static int cx_attach (device_t dev)
d->hi_queue.ifq_maxlen = IFQ_MAXLEN;
mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF);
mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF);
callout_init (&d->timeout_handle,
cx_mpsafenet ? CALLOUT_MPSAFE : 0);
callout_init (&d->timeout_handle, CALLOUT_MPSAFE);
#else /*NETGRAPH*/
d->ifp = if_alloc(IFT_PPP);
if (d->ifp == NULL) {
@ -865,8 +849,6 @@ static int cx_attach (device_t dev)
if_initname (d->ifp, "cx", b->num * NCHAN + c->num);
d->ifp->if_mtu = PP_MTU;
d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
if (!cx_mpsafenet)
d->ifp->if_flags |= IFF_NEEDSGIANT;
d->ifp->if_ioctl = cx_sioctl;
d->ifp->if_start = cx_ifstart;
d->ifp->if_watchdog = cx_ifwatchdog;
@ -901,8 +883,7 @@ static int cx_attach (device_t dev)
ttycreate(d->tty, TS_CALLOUT, "x%r%r", b->num, c->num);
d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num);
d->devt->si_drv1 = d;
callout_init (&d->dcd_timeout_handle,
cx_mpsafenet ? CALLOUT_MPSAFE : 0);
callout_init (&d->dcd_timeout_handle, CALLOUT_MPSAFE);
}
splx (s);
@ -2538,9 +2519,6 @@ static int cx_modevent (module_t mod, int type, void *unused)
{
static int load_count = 0;
if (cx_mpsafenet)
cx_cdevsw.d_flags &= ~D_NEEDGIANT;
switch (type) {
case MOD_LOAD:
#ifdef NETGRAPH
@ -2549,11 +2527,11 @@ static int cx_modevent (module_t mod, int type, void *unused)
#endif
++load_count;
callout_init (&timeout_handle, cx_mpsafenet?CALLOUT_MPSAFE:0);
callout_init (&timeout_handle, CALLOUT_MPSAFE);
callout_reset (&timeout_handle, hz*5, cx_timeout, 0);
/* Software interrupt. */
swi_add(&tty_intr_event, "cx", cx_softintr, NULL, SWI_TTY,
(cx_mpsafenet?INTR_MPSAFE:0), &cx_fast_ih);
INTR_MPSAFE, &cx_fast_ih);
break;
case MOD_UNLOAD:
if (load_count == 1) {