Author: kp Date: Fri Nov 2 16:57:23 2018 New Revision: 340068 URL: https://svnweb.freebsd.org/changeset/base/340068
Log: pfsync: Handle syncdev going away If the syncdev is removed we no longer need to clean up the multicast entry we've got set up for that device. Pass the ifnet detach event through pf to pfsync, and remove our multicast handle, and mark us as no longer having a syncdev. Note that this callback is always installed, even if the pfsync interface is disabled (and thus it's not a per-vnet callback pointer). MFC after: 2 weeks Sponsored by: Orange Business Services Differential Revision: https://reviews.freebsd.org/D17502 Modified: head/sys/net/pfvar.h head/sys/netpfil/pf/if_pfsync.c head/sys/netpfil/pf/pf_if.c head/sys/netpfil/pf/pf_ioctl.c Modified: head/sys/net/pfvar.h ============================================================================== --- head/sys/net/pfvar.h Fri Nov 2 16:53:15 2018 (r340067) +++ head/sys/net/pfvar.h Fri Nov 2 16:57:23 2018 (r340068) @@ -824,6 +824,7 @@ typedef void pfsync_update_state_t(struct pf_state *) typedef void pfsync_delete_state_t(struct pf_state *); typedef void pfsync_clear_states_t(u_int32_t, const char *); typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); +typedef void pfsync_detach_ifnet_t(struct ifnet *); VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) @@ -837,6 +838,7 @@ VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_sta #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) +extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; void pfsync_state_export(struct pfsync_state *, struct pf_state *); Modified: head/sys/netpfil/pf/if_pfsync.c ============================================================================== --- head/sys/netpfil/pf/if_pfsync.c Fri Nov 2 16:53:15 2018 (r340067) +++ head/sys/netpfil/pf/if_pfsync.c Fri Nov 2 16:57:23 2018 (r340068) @@ -281,6 +281,7 @@ static void pfsync_bulk_status(u_int8_t); static void pfsync_bulk_update(void *); static void pfsync_bulk_fail(void *); +static void pfsync_detach_ifnet(struct ifnet *); #ifdef IPSEC static void pfsync_update_net_tdb(struct pfsync_tdb *); #endif @@ -2292,6 +2293,29 @@ pfsync_multicast_cleanup(struct pfsync_softc *sc) imo->imo_multicast_ifp = NULL; } +void +pfsync_detach_ifnet(struct ifnet *ifp) +{ + struct pfsync_softc *sc = V_pfsyncif; + + if (sc == NULL) + return; + + PFSYNC_LOCK(sc); + + if (sc->sc_sync_if == ifp) { + /* We don't need mutlicast cleanup here, because the interface + * is going away. We do need to ensure we don't try to do + * cleanup later. + */ + sc->sc_imo.imo_membership = NULL; + sc->sc_imo.imo_multicast_ifp = NULL; + sc->sc_sync_if = NULL; + } + + PFSYNC_UNLOCK(sc); +} + #ifdef INET extern struct domain inetdomain; static struct protosw in_pfsync_protosw = { @@ -2372,6 +2396,8 @@ pfsync_init() #ifdef INET int error; + pfsync_detach_ifnet_ptr = pfsync_detach_ifnet; + error = pf_proto_register(PF_INET, &in_pfsync_protosw); if (error) return (error); @@ -2388,6 +2414,7 @@ pfsync_init() static void pfsync_uninit() { + pfsync_detach_ifnet_ptr = NULL; #ifdef INET ipproto_unregister(IPPROTO_PFSYNC); Modified: head/sys/netpfil/pf/pf_if.c ============================================================================== --- head/sys/netpfil/pf/pf_if.c Fri Nov 2 16:53:15 2018 (r340067) +++ head/sys/netpfil/pf/pf_if.c Fri Nov 2 16:57:23 2018 (r340068) @@ -834,6 +834,9 @@ pfi_detach_ifnet_event(void *arg __unused, struct ifne { struct pfi_kif *kif = (struct pfi_kif *)ifp->if_pf_kif; + if (pfsync_detach_ifnet_ptr) + pfsync_detach_ifnet_ptr(ifp); + if (kif == NULL) return; @@ -841,6 +844,7 @@ pfi_detach_ifnet_event(void *arg __unused, struct ifne /* Avoid teardown race in the least expensive way. */ return; } + PF_RULES_WLOCK(); V_pfi_update++; pfi_kif_update(kif); Modified: head/sys/netpfil/pf/pf_ioctl.c ============================================================================== --- head/sys/netpfil/pf/pf_ioctl.c Fri Nov 2 16:53:15 2018 (r340067) +++ head/sys/netpfil/pf/pf_ioctl.c Fri Nov 2 16:57:23 2018 (r340068) @@ -218,6 +218,7 @@ VNET_DEFINE(pfsync_update_state_t *, pfsync_update_sta VNET_DEFINE(pfsync_delete_state_t *, pfsync_delete_state_ptr); VNET_DEFINE(pfsync_clear_states_t *, pfsync_clear_states_ptr); VNET_DEFINE(pfsync_defer_t *, pfsync_defer_ptr); +pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; /* pflog */ pflog_packet_t *pflog_packet_ptr = NULL; _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
