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- Fix a bad typo (FreeBSD specific) in pfsync_bulk_update(). Instead

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of scheduling next run pfsync_bulk_update(), pfsync_bulk_fail()
  was scheduled.
  This lead to instant 100% state leak after first bulk update
  request.
- After above fix, it appeared that pfsync_bulk_update() lacks
  locking. To fix this, sc_bulk_tmo callout was converted to an
  mtx one. Eventually, all pf/pfsync callouts should be converted
  to mtx version, since it isn't possible to stop or drain a
  non-mtx callout without risk of race.
- Add comment that callout_stop() in pfsync_clone_destroy() lacks
  locking. Since pfsync0 can't be destroyed (yet), let it be here.
This commit is contained in:
Gleb Smirnoff 2011-10-23 15:08:18 +00:00
parent 35ad95774e
commit 2f2086d57e
1 changed files with 3 additions and 3 deletions
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6
sys/contrib/pf/net/if_pfsync.c
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@ -493,7 +493,7 @@ pfsync_clone_create(struct if_clone *ifc, int unit)
ifp->if_mtu = 1500; /* XXX */
#ifdef __FreeBSD__
callout_init(&sc->sc_tmo, CALLOUT_MPSAFE);
callout_init(&sc->sc_bulk_tmo, CALLOUT_MPSAFE);
callout_init_mtx(&sc->sc_bulk_tmo, &pf_task_mtx, 0);
callout_init(&sc->sc_bulkfail_tmo, CALLOUT_MPSAFE);
#else
ifp->if_hardmtu = MCLBYTES; /* XXX */
@ -540,7 +540,7 @@ pfsync_clone_destroy(struct ifnet *ifp)
#ifdef __FreeBSD__
EVENTHANDLER_DEREGISTER(ifnet_departure_event, sc->sc_detachtag);
#endif
timeout_del(&sc->sc_bulk_tmo);
timeout_del(&sc->sc_bulk_tmo); /* XXX: need PF_LOCK() before */
timeout_del(&sc->sc_tmo);
#if NCARP > 0
#ifdef notyet
@ -3061,7 +3061,7 @@ pfsync_bulk_update(void *arg)
sc->sc_bulk_next = st;
#ifdef __FreeBSD__
callout_reset(&sc->sc_bulk_tmo, 1,
pfsync_bulk_fail, sc);
pfsync_bulk_update, sc);
#else
timeout_add(&sc->sc_bulk_tmo, 1);
#endif