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Improve error handling in the old initiator, preventing panic on attempt

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to load iscsi_initiator.ko when iscsi.ko is already loaded.

Approved by:	re (glebius)
Sponsored by:	FreeBSD Foundation
This commit is contained in:
Edward Tomasz Napierala 2013-09-24 17:01:29 +00:00
parent 58f1be5525
commit d403a6c330
1 changed files with 14 additions and 9 deletions
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23
sys/dev/iscsi_initiator/iscsi.c
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@ -706,7 +706,7 @@ free_pdus(struct isc_softc *sc)
}
}
static void
static int
iscsi_start(void)
{
debug_called(8);
@ -715,8 +715,6 @@ iscsi_start(void)
TUNABLE_INT_FETCH("net.iscsi_initiator.max_pdus", &max_pdus);
isc = malloc(sizeof(struct isc_softc), M_ISCSI, M_ZERO|M_WAITOK);
isc->dev = make_dev(&iscsi_cdevsw, max_sessions, UID_ROOT, GID_WHEEL, 0600, "iscsi");
isc->dev->si_drv1 = isc;
mtx_init(&isc->isc_mtx, "iscsi-isc", NULL, MTX_DEF);
TAILQ_INIT(&isc->isc_sess);
@ -726,10 +724,6 @@ iscsi_start(void)
isc->pdu_zone = uma_zcreate("pdu", sizeof(pduq_t),
NULL, NULL, NULL, NULL,
0, 0);
if(isc->pdu_zone == NULL) {
xdebug("iscsi_initiator: uma_zcreate failed");
// XXX: should fail...
}
uma_zone_set_max(isc->pdu_zone, max_pdus);
isc->unit = new_unrhdr(0, max_sessions-1, NULL);
sx_init(&isc->unit_sx, "iscsi sx");
@ -782,7 +776,16 @@ iscsi_start(void)
mtx_init(&iscsi_dbg_mtx, "iscsi_dbg", NULL, MTX_DEF);
#endif
isc->dev = make_dev_credf(MAKEDEV_CHECKNAME, &iscsi_cdevsw, max_sessions,
NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi");
if (isc->dev == NULL) {
xdebug("iscsi_initiator: make_dev_credf failed");
return (EEXIST);
}
isc->dev->si_drv1 = isc;
printf("iscsi: version %s\n", iscsi_driver_version);
return (0);
}
/*
@ -830,11 +833,13 @@ iscsi_stop(void)
static int
iscsi_modevent(module_t mod, int what, void *arg)
{
int error = 0;
debug_called(8);
switch(what) {
case MOD_LOAD:
iscsi_start();
error = iscsi_start();
break;
case MOD_QUIESCE:
@ -854,7 +859,7 @@ iscsi_modevent(module_t mod, int what, void *arg)
default:
break;
}
return 0;
return (error);
}
moduledata_t iscsi_mod = {