Differential D20080 Diff 58308 sys/netpfil/pf/if_pfsync.c

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sys/netpfil/pf/if_pfsync.c

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VNET_DEFINE_STATIC(int, pfsync_carp_adj) = CARP_MAXSKEW;		VNET_DEFINE_STATIC(int, pfsync_carp_adj) = CARP_MAXSKEW;
#define V_pfsync_carp_adj VNET(pfsync_carp_adj)		#define V_pfsync_carp_adj VNET(pfsync_carp_adj)

static void pfsync_timeout(void *);		static void pfsync_timeout(void *);
static void pfsync_push(struct pfsync_bucket *);		static void pfsync_push(struct pfsync_bucket *);
static void pfsync_push_all(struct pfsync_softc *);		static void pfsync_push_all(struct pfsync_softc *);
static void pfsyncintr(void *);		static void pfsyncintr(void *);
static int pfsync_multicast_setup(struct pfsync_softc , struct ifnet ,		static int pfsync_multicast_setup(struct pfsync_softc , struct ifnet ,
void *);		struct in_mfilter *imf);
static void pfsync_multicast_cleanup(struct pfsync_softc *);		static void pfsync_multicast_cleanup(struct pfsync_softc *);
static void pfsync_pointers_init(void);		static void pfsync_pointers_init(void);
static void pfsync_pointers_uninit(void);		static void pfsync_pointers_uninit(void);
static int pfsync_init(void);		static int pfsync_init(void);
static void pfsync_uninit(void);		static void pfsync_uninit(void);

static unsigned long pfsync_buckets;		static unsigned long pfsync_buckets;

▲ Show 20 Lines • Show All 149 Lines • ▼ Show 20 Lines	pfsync_clone_destroy(struct ifnet *ifp)
if (!(sc->sc_flags & PFSYNCF_OK) && carp_demote_adj_p)		if (!(sc->sc_flags & PFSYNCF_OK) && carp_demote_adj_p)
(*carp_demote_adj_p)(-V_pfsync_carp_adj, "pfsync destroy");		(*carp_demote_adj_p)(-V_pfsync_carp_adj, "pfsync destroy");
bpfdetach(ifp);		bpfdetach(ifp);
if_detach(ifp);		if_detach(ifp);

pfsync_drop(sc);		pfsync_drop(sc);

if_free(ifp);		if_free(ifp);
if (sc->sc_imo.imo_membership)
pfsync_multicast_cleanup(sc);		pfsync_multicast_cleanup(sc);
mtx_destroy(&sc->sc_mtx);		mtx_destroy(&sc->sc_mtx);
mtx_destroy(&sc->sc_bulk_mtx);		mtx_destroy(&sc->sc_bulk_mtx);

free(sc->sc_buckets, M_PFSYNC);		free(sc->sc_buckets, M_PFSYNC);
free(sc, M_PFSYNC);		free(sc, M_PFSYNC);

V_pfsyncif = NULL;		V_pfsyncif = NULL;
}		}
▲ Show 20 Lines • Show All 925 Lines • ▼ Show 20 Lines	case SIOCGETPFSYNC:
pfsyncr.pfsyncr_defer = (PFSYNCF_DEFER ==		pfsyncr.pfsyncr_defer = (PFSYNCF_DEFER ==
(sc->sc_flags & PFSYNCF_DEFER));		(sc->sc_flags & PFSYNCF_DEFER));
PFSYNC_UNLOCK(sc);		PFSYNC_UNLOCK(sc);
return (copyout(&pfsyncr, ifr_data_get_ptr(ifr),		return (copyout(&pfsyncr, ifr_data_get_ptr(ifr),
sizeof(pfsyncr)));		sizeof(pfsyncr)));

case SIOCSETPFSYNC:		case SIOCSETPFSYNC:
{		{
struct ip_moptions *imo = &sc->sc_imo;		struct in_mfilter *imf = NULL;
struct ifnet *sifp;		struct ifnet *sifp;
struct ip *ip;		struct ip *ip;
void *mship = NULL;

if ((error = priv_check(curthread, PRIV_NETINET_PF)) != 0)		if ((error = priv_check(curthread, PRIV_NETINET_PF)) != 0)
return (error);		return (error);
if ((error = copyin(ifr_data_get_ptr(ifr), &pfsyncr,		if ((error = copyin(ifr_data_get_ptr(ifr), &pfsyncr,
sizeof(pfsyncr))))		sizeof(pfsyncr))))
return (error);		return (error);

if (pfsyncr.pfsyncr_maxupdates > 255)		if (pfsyncr.pfsyncr_maxupdates > 255)
return (EINVAL);		return (EINVAL);

if (pfsyncr.pfsyncr_syncdev[0] == 0)		if (pfsyncr.pfsyncr_syncdev[0] == 0)
sifp = NULL;		sifp = NULL;
else if ((sifp = ifunit_ref(pfsyncr.pfsyncr_syncdev)) == NULL)		else if ((sifp = ifunit_ref(pfsyncr.pfsyncr_syncdev)) == NULL)
return (EINVAL);		return (EINVAL);

if (sifp != NULL && (		if (sifp != NULL && (
pfsyncr.pfsyncr_syncpeer.s_addr == 0 \|\|		pfsyncr.pfsyncr_syncpeer.s_addr == 0 \|\|
pfsyncr.pfsyncr_syncpeer.s_addr ==		pfsyncr.pfsyncr_syncpeer.s_addr ==
htonl(INADDR_PFSYNC_GROUP)))		htonl(INADDR_PFSYNC_GROUP)))
mship = malloc((sizeof(struct in_multi )		imf = ip_alloc_mfilter(M_WAITOK, 0, 0);
		markjUnsubmitted Done Inline Actions Missing space after the last comma. markj: Missing space after the last comma.
IP_MIN_MEMBERSHIPS), M_PFSYNC, M_WAITOK \| M_ZERO);

PFSYNC_LOCK(sc);		PFSYNC_LOCK(sc);
if (pfsyncr.pfsyncr_syncpeer.s_addr == 0)		if (pfsyncr.pfsyncr_syncpeer.s_addr == 0)
sc->sc_sync_peer.s_addr = htonl(INADDR_PFSYNC_GROUP);		sc->sc_sync_peer.s_addr = htonl(INADDR_PFSYNC_GROUP);
else		else
sc->sc_sync_peer.s_addr =		sc->sc_sync_peer.s_addr =
pfsyncr.pfsyncr_syncpeer.s_addr;		pfsyncr.pfsyncr_syncpeer.s_addr;

sc->sc_maxupdates = pfsyncr.pfsyncr_maxupdates;		sc->sc_maxupdates = pfsyncr.pfsyncr_maxupdates;
if (pfsyncr.pfsyncr_defer) {		if (pfsyncr.pfsyncr_defer) {
sc->sc_flags \|= PFSYNCF_DEFER;		sc->sc_flags \|= PFSYNCF_DEFER;
V_pfsync_defer_ptr = pfsync_defer;		V_pfsync_defer_ptr = pfsync_defer;
} else {		} else {
sc->sc_flags &= ~PFSYNCF_DEFER;		sc->sc_flags &= ~PFSYNCF_DEFER;
V_pfsync_defer_ptr = NULL;		V_pfsync_defer_ptr = NULL;
}		}

if (sifp == NULL) {		if (sifp == NULL) {
if (sc->sc_sync_if)		if (sc->sc_sync_if)
if_rele(sc->sc_sync_if);		if_rele(sc->sc_sync_if);
sc->sc_sync_if = NULL;		sc->sc_sync_if = NULL;
if (imo->imo_membership)
pfsync_multicast_cleanup(sc);		pfsync_multicast_cleanup(sc);
PFSYNC_UNLOCK(sc);		PFSYNC_UNLOCK(sc);
break;		break;
}		}

for (c = 0; c < pfsync_buckets; c++) {		for (c = 0; c < pfsync_buckets; c++) {
PFSYNC_BUCKET_LOCK(&sc->sc_buckets[c]);		PFSYNC_BUCKET_LOCK(&sc->sc_buckets[c]);
if (sc->sc_buckets[c].b_len > PFSYNC_MINPKT &&		if (sc->sc_buckets[c].b_len > PFSYNC_MINPKT &&
(sifp->if_mtu < sc->sc_ifp->if_mtu \|\|		(sifp->if_mtu < sc->sc_ifp->if_mtu \|\|
(sc->sc_sync_if != NULL &&		(sc->sc_sync_if != NULL &&
sifp->if_mtu < sc->sc_sync_if->if_mtu) \|\|		sifp->if_mtu < sc->sc_sync_if->if_mtu) \|\|
sifp->if_mtu < MCLBYTES - sizeof(struct ip)))		sifp->if_mtu < MCLBYTES - sizeof(struct ip)))
pfsync_sendout(1, c);		pfsync_sendout(1, c);
PFSYNC_BUCKET_UNLOCK(&sc->sc_buckets[c]);		PFSYNC_BUCKET_UNLOCK(&sc->sc_buckets[c]);
}		}

if (imo->imo_membership)
pfsync_multicast_cleanup(sc);		pfsync_multicast_cleanup(sc);

if (sc->sc_sync_peer.s_addr == htonl(INADDR_PFSYNC_GROUP)) {		if (sc->sc_sync_peer.s_addr == htonl(INADDR_PFSYNC_GROUP)) {
error = pfsync_multicast_setup(sc, sifp, mship);		error = pfsync_multicast_setup(sc, sifp, imf);
if (error) {		if (error) {
if_rele(sifp);		if_rele(sifp);
free(mship, M_PFSYNC);		ip_free_mfilter(imf);
PFSYNC_UNLOCK(sc);		PFSYNC_UNLOCK(sc);
return (error);		return (error);
}		}
}		}
if (sc->sc_sync_if)		if (sc->sc_sync_if)
if_rele(sc->sc_sync_if);		if_rele(sc->sc_sync_if);
sc->sc_sync_if = sifp;		sc->sc_sync_if = sifp;

▲ Show 20 Lines • Show All 893 Lines • ▼ Show 20 Lines	for (; m != NULL; m = n) {
else		else
V_pfsyncstats.pfsyncs_oerrors++;		V_pfsyncstats.pfsyncs_oerrors++;
}		}
}		}
CURVNET_RESTORE();		CURVNET_RESTORE();
}		}

static int		static int
pfsync_multicast_setup(struct pfsync_softc sc, struct ifnet ifp, void *mship)		pfsync_multicast_setup(struct pfsync_softc sc, struct ifnet ifp, struct in_mfilter *imf)
		markjUnsubmitted Done Inline Actions This line is too long. markj: This line is too long.
		hselaskyAuthorUnsubmitted Done Inline Actions Fixed. hselasky: Fixed.
{		{
struct ip_moptions *imo = &sc->sc_imo;		struct ip_moptions *imo = &sc->sc_imo;
int error;		int error;

if (!(ifp->if_flags & IFF_MULTICAST))		if (!(ifp->if_flags & IFF_MULTICAST))
return (EADDRNOTAVAIL);		return (EADDRNOTAVAIL);

imo->imo_membership = (struct in_multi **)mship;
imo->imo_max_memberships = IP_MIN_MEMBERSHIPS;
imo->imo_multicast_vif = -1;		imo->imo_multicast_vif = -1;

if ((error = in_joingroup(ifp, &sc->sc_sync_peer, NULL,		if ((error = in_joingroup(ifp, &sc->sc_sync_peer, NULL,
&imo->imo_membership[0])) != 0) {		&imf->imf_inm)) != 0)
imo->imo_membership = NULL;
return (error);		return (error);
}
imo->imo_num_memberships++;		ip_init_mfilter(&imo->imo_head);
		ip_insert_mfilter(&imo->imo_head, imf);
imo->imo_multicast_ifp = ifp;		imo->imo_multicast_ifp = ifp;
imo->imo_multicast_ttl = PFSYNC_DFLTTL;		imo->imo_multicast_ttl = PFSYNC_DFLTTL;
imo->imo_multicast_loop = 0;		imo->imo_multicast_loop = 0;

return (0);		return (0);
}		}

static void		static void
pfsync_multicast_cleanup(struct pfsync_softc *sc)		pfsync_multicast_cleanup(struct pfsync_softc *sc)
{		{
struct ip_moptions *imo = &sc->sc_imo;		struct ip_moptions *imo = &sc->sc_imo;
		struct in_mfilter *imf;

in_leavegroup(imo->imo_membership[0], NULL);		while ((imf = ip_first_mfilter(&imo->imo_head)) != NULL) {
		markjUnsubmitted Done Inline Actions We should probably assert that imo_head is empty following the removal? markj: We should probably assert that imo_head is empty following the removal?
		hselaskyAuthorUnsubmitted Done Inline Actions We might just loop here. I'll fix in next patch revision. hselasky: We might just loop here. I'll fix in next patch revision.
free(imo->imo_membership, M_PFSYNC);		ip_remove_mfilter(&imo->imo_head, imf);
imo->imo_membership = NULL;		in_leavegroup(imf->imf_inm, NULL);
		ip_free_mfilter(imf);
		}
imo->imo_multicast_ifp = NULL;		imo->imo_multicast_ifp = NULL;
}		}

void		void
pfsync_detach_ifnet(struct ifnet *ifp)		pfsync_detach_ifnet(struct ifnet *ifp)
{		{
struct pfsync_softc *sc = V_pfsyncif;		struct pfsync_softc *sc = V_pfsyncif;

if (sc == NULL)		if (sc == NULL)
return;		return;

PFSYNC_LOCK(sc);		PFSYNC_LOCK(sc);

if (sc->sc_sync_if == ifp) {		if (sc->sc_sync_if == ifp) {
/* We don't need mutlicast cleanup here, because the interface		/* We don't need mutlicast cleanup here, because the interface
* is going away. We do need to ensure we don't try to do		* is going away. We do need to ensure we don't try to do
* cleanup later.		* cleanup later.
*/		*/
sc->sc_imo.imo_membership = NULL;		ip_init_mfilter(&sc->sc_imo.imo_head);
		markjUnsubmitted Done Inline Actions We should wrap this in a helper routine. markj: We should wrap this in a helper routine.
		hselaskyAuthorUnsubmitted Done Inline Actions Will be fixed in next patch version. hselasky: Will be fixed in next patch version.
sc->sc_imo.imo_multicast_ifp = NULL;		sc->sc_imo.imo_multicast_ifp = NULL;
sc->sc_sync_if = NULL;		sc->sc_sync_if = NULL;
}		}

PFSYNC_UNLOCK(sc);		PFSYNC_UNLOCK(sc);
}		}

#ifdef INET		#ifdef INET
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