diff options
Diffstat (limited to 'freebsd/sys/contrib/pf/net/if_pfsync.c')
| -rw-r--r-- | freebsd/sys/contrib/pf/net/if_pfsync.c | 3492 |
1 files changed, 0 insertions, 3492 deletions
diff --git a/freebsd/sys/contrib/pf/net/if_pfsync.c b/freebsd/sys/contrib/pf/net/if_pfsync.c deleted file mode 100644 index 39d4be68..00000000 --- a/freebsd/sys/contrib/pf/net/if_pfsync.c +++ /dev/null @@ -1,3492 +0,0 @@ -#include <machine/rtems-bsd-kernel-space.h> - -/* $OpenBSD: if_pfsync.c,v 1.110 2009/02/24 05:39:19 dlg Exp $ */ - -/* - * Copyright (c) 2002 Michael Shalayeff - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * Copyright (c) 2009 David Gwynne <dlg@openbsd.org> - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -/* - * Revisions picked from OpenBSD after revision 1.110 import: - * 1.118, 1.124, 1.148, 1.149, 1.151, 1.171 - fixes to bulk updates - * 1.120, 1.175 - use monotonic time_uptime - * 1.122 - reduce number of updates for non-TCP sessions - * 1.128 - cleanups - * 1.146 - bzero() mbuf before sparsely filling it with data - * 1.170 - SIOCSIFMTU checks - */ - -#ifdef __FreeBSD__ -#include <rtems/bsd/local/opt_inet.h> -#include <rtems/bsd/local/opt_inet6.h> -#include <rtems/bsd/local/opt_pf.h> - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#define NBPFILTER 1 - -#ifdef DEV_CARP -#define NCARP DEV_CARP -#else -#define NCARP 0 -#endif -#endif /* __FreeBSD__ */ - -#include <rtems/bsd/sys/param.h> -#include <sys/kernel.h> -#ifdef __FreeBSD__ -#include <sys/bus.h> -#include <sys/interrupt.h> -#include <sys/priv.h> -#endif -#include <sys/proc.h> -#include <sys/systm.h> -#include <sys/time.h> -#include <sys/mbuf.h> -#include <sys/socket.h> -#ifdef __FreeBSD__ -#include <sys/endian.h> -#include <sys/malloc.h> -#include <sys/module.h> -#include <sys/sockio.h> -#include <sys/taskqueue.h> -#include <rtems/bsd/sys/lock.h> -#include <sys/mutex.h> -#include <sys/protosw.h> -#else -#include <sys/ioctl.h> -#include <sys/timeout.h> -#endif -#include <sys/sysctl.h> -#ifndef __FreeBSD__ -#include <sys/pool.h> -#endif - -#include <net/if.h> -#ifdef __FreeBSD__ -#include <net/if_clone.h> -#endif -#include <net/if_types.h> -#include <net/route.h> -#include <net/bpf.h> -#include <net/netisr.h> -#ifdef __FreeBSD__ -#include <net/vnet.h> -#endif - -#include <netinet/in.h> -#include <netinet/if_ether.h> -#include <netinet/tcp.h> -#include <netinet/tcp_seq.h> - -#ifdef INET -#include <netinet/in_systm.h> -#include <netinet/in_var.h> -#include <netinet/ip.h> -#include <netinet/ip_var.h> -#endif - -#ifdef INET6 -#include <netinet6/nd6.h> -#endif /* INET6 */ - -#ifndef __FreeBSD__ -#include "carp.h" -#endif -#if NCARP > 0 -#include <netinet/ip_carp.h> -#endif - -#include <net/pfvar.h> -#include <net/if_pfsync.h> - -#ifndef __FreeBSD__ -#include "bpfilter.h" -#include "pfsync.h" -#endif - -#define PFSYNC_MINPKT ( \ - sizeof(struct ip) + \ - sizeof(struct pfsync_header) + \ - sizeof(struct pfsync_subheader) + \ - sizeof(struct pfsync_eof)) - -struct pfsync_pkt { - struct ip *ip; - struct in_addr src; - u_int8_t flags; -}; - -int pfsync_input_hmac(struct mbuf *, int); - -int pfsync_upd_tcp(struct pf_state *, struct pfsync_state_peer *, - struct pfsync_state_peer *); - -int pfsync_in_clr(struct pfsync_pkt *, struct mbuf *, int, int); -int pfsync_in_ins(struct pfsync_pkt *, struct mbuf *, int, int); -int pfsync_in_iack(struct pfsync_pkt *, struct mbuf *, int, int); -int pfsync_in_upd(struct pfsync_pkt *, struct mbuf *, int, int); -int pfsync_in_upd_c(struct pfsync_pkt *, struct mbuf *, int, int); -int pfsync_in_ureq(struct pfsync_pkt *, struct mbuf *, int, int); -int pfsync_in_del(struct pfsync_pkt *, struct mbuf *, int, int); -int pfsync_in_del_c(struct pfsync_pkt *, struct mbuf *, int, int); -int pfsync_in_bus(struct pfsync_pkt *, struct mbuf *, int, int); -int pfsync_in_tdb(struct pfsync_pkt *, struct mbuf *, int, int); -int pfsync_in_eof(struct pfsync_pkt *, struct mbuf *, int, int); - -int pfsync_in_error(struct pfsync_pkt *, struct mbuf *, int, int); - -int (*pfsync_acts[])(struct pfsync_pkt *, struct mbuf *, int, int) = { - pfsync_in_clr, /* PFSYNC_ACT_CLR */ - pfsync_in_ins, /* PFSYNC_ACT_INS */ - pfsync_in_iack, /* PFSYNC_ACT_INS_ACK */ - pfsync_in_upd, /* PFSYNC_ACT_UPD */ - pfsync_in_upd_c, /* PFSYNC_ACT_UPD_C */ - pfsync_in_ureq, /* PFSYNC_ACT_UPD_REQ */ - pfsync_in_del, /* PFSYNC_ACT_DEL */ - pfsync_in_del_c, /* PFSYNC_ACT_DEL_C */ - pfsync_in_error, /* PFSYNC_ACT_INS_F */ - pfsync_in_error, /* PFSYNC_ACT_DEL_F */ - pfsync_in_bus, /* PFSYNC_ACT_BUS */ - pfsync_in_tdb, /* PFSYNC_ACT_TDB */ - pfsync_in_eof /* PFSYNC_ACT_EOF */ -}; - -struct pfsync_q { - int (*write)(struct pf_state *, struct mbuf *, int); - size_t len; - u_int8_t action; -}; - -/* we have one of these for every PFSYNC_S_ */ -int pfsync_out_state(struct pf_state *, struct mbuf *, int); -int pfsync_out_iack(struct pf_state *, struct mbuf *, int); -int pfsync_out_upd_c(struct pf_state *, struct mbuf *, int); -int pfsync_out_del(struct pf_state *, struct mbuf *, int); - -struct pfsync_q pfsync_qs[] = { - { pfsync_out_state, sizeof(struct pfsync_state), PFSYNC_ACT_INS }, - { pfsync_out_iack, sizeof(struct pfsync_ins_ack), PFSYNC_ACT_INS_ACK }, - { pfsync_out_state, sizeof(struct pfsync_state), PFSYNC_ACT_UPD }, - { pfsync_out_upd_c, sizeof(struct pfsync_upd_c), PFSYNC_ACT_UPD_C }, - { pfsync_out_del, sizeof(struct pfsync_del_c), PFSYNC_ACT_DEL_C } -}; - -void pfsync_q_ins(struct pf_state *, int); -void pfsync_q_del(struct pf_state *); - -struct pfsync_upd_req_item { - TAILQ_ENTRY(pfsync_upd_req_item) ur_entry; - struct pfsync_upd_req ur_msg; -}; -TAILQ_HEAD(pfsync_upd_reqs, pfsync_upd_req_item); - -struct pfsync_deferral { - TAILQ_ENTRY(pfsync_deferral) pd_entry; - struct pf_state *pd_st; - struct mbuf *pd_m; -#ifdef __FreeBSD__ - struct callout pd_tmo; -#else - struct timeout pd_tmo; -#endif -}; -TAILQ_HEAD(pfsync_deferrals, pfsync_deferral); - -#define PFSYNC_PLSIZE MAX(sizeof(struct pfsync_upd_req_item), \ - sizeof(struct pfsync_deferral)) - -#ifdef notyet -int pfsync_out_tdb(struct tdb *, struct mbuf *, int); -#endif - -struct pfsync_softc { -#ifdef __FreeBSD__ - struct ifnet *sc_ifp; -#else - struct ifnet sc_if; -#endif - struct ifnet *sc_sync_if; - -#ifdef __FreeBSD__ - uma_zone_t sc_pool; -#else - struct pool sc_pool; -#endif - - struct ip_moptions sc_imo; - - struct in_addr sc_sync_peer; - u_int8_t sc_maxupdates; -#ifdef __FreeBSD__ - int pfsync_sync_ok; -#endif - - struct ip sc_template; - - struct pf_state_queue sc_qs[PFSYNC_S_COUNT]; - size_t sc_len; - - struct pfsync_upd_reqs sc_upd_req_list; - - struct pfsync_deferrals sc_deferrals; - u_int sc_deferred; - - void *sc_plus; - size_t sc_pluslen; - - u_int32_t sc_ureq_sent; - int sc_bulk_tries; -#ifdef __FreeBSD__ - struct callout sc_bulkfail_tmo; -#else - struct timeout sc_bulkfail_tmo; -#endif - - u_int32_t sc_ureq_received; - struct pf_state *sc_bulk_next; - struct pf_state *sc_bulk_last; -#ifdef __FreeBSD__ - struct callout sc_bulk_tmo; -#else - struct timeout sc_bulk_tmo; -#endif - - TAILQ_HEAD(, tdb) sc_tdb_q; - -#ifdef __FreeBSD__ - struct callout sc_tmo; -#else - struct timeout sc_tmo; -#endif -}; - -#ifdef __FreeBSD__ -static MALLOC_DEFINE(M_PFSYNC, "pfsync", "pfsync data"); -static VNET_DEFINE(struct pfsync_softc *, pfsyncif) = NULL; -#define V_pfsyncif VNET(pfsyncif) -static VNET_DEFINE(void *, pfsync_swi_cookie) = NULL; -#define V_pfsync_swi_cookie VNET(pfsync_swi_cookie) -static VNET_DEFINE(struct pfsyncstats, pfsyncstats); -#define V_pfsyncstats VNET(pfsyncstats) - -static void pfsyncintr(void *); -static int pfsync_multicast_setup(struct pfsync_softc *); -static void pfsync_multicast_cleanup(struct pfsync_softc *); -static int pfsync_init(void); -static void pfsync_uninit(void); -static void pfsync_sendout1(int); - -#define schednetisr(NETISR_PFSYNC) swi_sched(V_pfsync_swi_cookie, 0) - -SYSCTL_NODE(_net, OID_AUTO, pfsync, CTLFLAG_RW, 0, "PFSYNC"); -SYSCTL_VNET_STRUCT(_net_pfsync, OID_AUTO, stats, CTLFLAG_RW, - &VNET_NAME(pfsyncstats), pfsyncstats, - "PFSYNC statistics (struct pfsyncstats, net/if_pfsync.h)"); -#else -struct pfsync_softc *pfsyncif = NULL; -struct pfsyncstats pfsyncstats; -#define V_pfsyncstats pfsyncstats -#endif - -void pfsyncattach(int); -#ifdef __FreeBSD__ -int pfsync_clone_create(struct if_clone *, int, caddr_t); -void pfsync_clone_destroy(struct ifnet *); -#else -int pfsync_clone_create(struct if_clone *, int); -int pfsync_clone_destroy(struct ifnet *); -#endif -int pfsync_alloc_scrub_memory(struct pfsync_state_peer *, - struct pf_state_peer *); -void pfsync_update_net_tdb(struct pfsync_tdb *); -int pfsyncoutput(struct ifnet *, struct mbuf *, struct sockaddr *, -#ifdef __FreeBSD__ - struct route *); -#else - struct rtentry *); -#endif -int pfsyncioctl(struct ifnet *, u_long, caddr_t); -void pfsyncstart(struct ifnet *); - -struct mbuf *pfsync_if_dequeue(struct ifnet *); - -void pfsync_deferred(struct pf_state *, int); -void pfsync_undefer(struct pfsync_deferral *, int); -void pfsync_defer_tmo(void *); - -void pfsync_request_update(u_int32_t, u_int64_t); -void pfsync_update_state_req(struct pf_state *); - -void pfsync_drop(struct pfsync_softc *); -void pfsync_sendout(void); -void pfsync_send_plus(void *, size_t); -void pfsync_timeout(void *); -void pfsync_tdb_timeout(void *); - -void pfsync_bulk_start(void); -void pfsync_bulk_status(u_int8_t); -void pfsync_bulk_update(void *); -void pfsync_bulk_fail(void *); - -#ifdef __FreeBSD__ -/* XXX: ugly */ -#define betoh64 (unsigned long long)be64toh -#define timeout_del callout_stop -#endif - -#define PFSYNC_MAX_BULKTRIES 12 -#ifndef __FreeBSD__ -int pfsync_sync_ok; -#endif - -#ifdef __FreeBSD__ -VNET_DEFINE(struct ifc_simple_data, pfsync_cloner_data); -VNET_DEFINE(struct if_clone, pfsync_cloner); -#define V_pfsync_cloner_data VNET(pfsync_cloner_data) -#define V_pfsync_cloner VNET(pfsync_cloner) -IFC_SIMPLE_DECLARE(pfsync, 1); -#else -struct if_clone pfsync_cloner = - IF_CLONE_INITIALIZER("pfsync", pfsync_clone_create, pfsync_clone_destroy); -#endif - -void -pfsyncattach(int npfsync) -{ - if_clone_attach(&pfsync_cloner); -} -int -#ifdef __FreeBSD__ -pfsync_clone_create(struct if_clone *ifc, int unit, caddr_t param) -#else -pfsync_clone_create(struct if_clone *ifc, int unit) -#endif -{ - struct pfsync_softc *sc; - struct ifnet *ifp; - int q; - - if (unit != 0) - return (EINVAL); - -#ifdef __FreeBSD__ - sc = malloc(sizeof(struct pfsync_softc), M_PFSYNC, M_WAITOK | M_ZERO); - sc->pfsync_sync_ok = 1; -#else - pfsync_sync_ok = 1; - sc = malloc(sizeof(*pfsyncif), M_DEVBUF, M_NOWAIT | M_ZERO); -#endif - - for (q = 0; q < PFSYNC_S_COUNT; q++) - TAILQ_INIT(&sc->sc_qs[q]); - -#ifdef __FreeBSD__ - sc->sc_pool = uma_zcreate("pfsync", PFSYNC_PLSIZE, NULL, NULL, NULL, - NULL, UMA_ALIGN_PTR, 0); -#else - pool_init(&sc->sc_pool, PFSYNC_PLSIZE, 0, 0, 0, "pfsync", NULL); -#endif - TAILQ_INIT(&sc->sc_upd_req_list); - TAILQ_INIT(&sc->sc_deferrals); - sc->sc_deferred = 0; - - TAILQ_INIT(&sc->sc_tdb_q); - - sc->sc_len = PFSYNC_MINPKT; - sc->sc_maxupdates = 128; - -#ifndef __FreeBSD__ - sc->sc_imo.imo_membership = (struct in_multi **)malloc( - (sizeof(struct in_multi *) * IP_MIN_MEMBERSHIPS), M_IPMOPTS, - M_WAITOK | M_ZERO); - sc->sc_imo.imo_max_memberships = IP_MIN_MEMBERSHIPS; -#endif - -#ifdef __FreeBSD__ - ifp = sc->sc_ifp = if_alloc(IFT_PFSYNC); - if (ifp == NULL) { - uma_zdestroy(sc->sc_pool); - free(sc, M_PFSYNC); - return (ENOSPC); - } - if_initname(ifp, ifc->ifc_name, unit); -#else - ifp = &sc->sc_if; - snprintf(ifp->if_xname, sizeof ifp->if_xname, "pfsync%d", unit); -#endif - ifp->if_softc = sc; - ifp->if_ioctl = pfsyncioctl; - ifp->if_output = pfsyncoutput; - ifp->if_start = pfsyncstart; - ifp->if_type = IFT_PFSYNC; - ifp->if_snd.ifq_maxlen = ifqmaxlen; - ifp->if_hdrlen = sizeof(struct pfsync_header); - ifp->if_mtu = ETHERMTU; -#ifdef __FreeBSD__ - callout_init(&sc->sc_tmo, CALLOUT_MPSAFE); - callout_init_mtx(&sc->sc_bulk_tmo, &pf_task_mtx, 0); - callout_init(&sc->sc_bulkfail_tmo, CALLOUT_MPSAFE); -#else - timeout_set(&sc->sc_tmo, pfsync_timeout, sc); - timeout_set(&sc->sc_bulk_tmo, pfsync_bulk_update, sc); - timeout_set(&sc->sc_bulkfail_tmo, pfsync_bulk_fail, sc); -#endif - - if_attach(ifp); -#ifndef __FreeBSD__ - if_alloc_sadl(ifp); -#endif - -#if NCARP > 0 - if_addgroup(ifp, "carp"); -#endif - -#if NBPFILTER > 0 -#ifdef __FreeBSD__ - bpfattach(ifp, DLT_PFSYNC, PFSYNC_HDRLEN); -#else - bpfattach(&sc->sc_if.if_bpf, ifp, DLT_PFSYNC, PFSYNC_HDRLEN); -#endif -#endif - -#ifdef __FreeBSD__ - V_pfsyncif = sc; -#else - pfsyncif = sc; -#endif - - return (0); -} - -#ifdef __FreeBSD__ -void -#else -int -#endif -pfsync_clone_destroy(struct ifnet *ifp) -{ - struct pfsync_softc *sc = ifp->if_softc; - -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - timeout_del(&sc->sc_bulkfail_tmo); - timeout_del(&sc->sc_bulk_tmo); - timeout_del(&sc->sc_tmo); -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif -#if NCARP > 0 -#ifdef notyet -#ifdef __FreeBSD__ - if (!sc->pfsync_sync_ok) -#else - if (!pfsync_sync_ok) -#endif - carp_group_demote_adj(&sc->sc_if, -1); -#endif -#endif -#if NBPFILTER > 0 - bpfdetach(ifp); -#endif - if_detach(ifp); - - pfsync_drop(sc); - - while (sc->sc_deferred > 0) - pfsync_undefer(TAILQ_FIRST(&sc->sc_deferrals), 0); - -#ifdef __FreeBSD__ - UMA_DESTROY(sc->sc_pool); -#else - pool_destroy(&sc->sc_pool); -#endif -#ifdef __FreeBSD__ - if_free(ifp); - if (sc->sc_imo.imo_membership) - pfsync_multicast_cleanup(sc); - free(sc, M_PFSYNC); -#else - free(sc->sc_imo.imo_membership, M_IPMOPTS); - free(sc, M_DEVBUF); -#endif - -#ifdef __FreeBSD__ - V_pfsyncif = NULL; -#else - pfsyncif = NULL; -#endif - -#ifndef __FreeBSD__ - return (0); -#endif -} - -struct mbuf * -pfsync_if_dequeue(struct ifnet *ifp) -{ - struct mbuf *m; -#ifndef __FreeBSD__ - int s; -#endif - -#ifdef __FreeBSD__ - IF_LOCK(&ifp->if_snd); - _IF_DROP(&ifp->if_snd); - _IF_DEQUEUE(&ifp->if_snd, m); - IF_UNLOCK(&ifp->if_snd); -#else - s = splnet(); - IF_DEQUEUE(&ifp->if_snd, m); - splx(s); -#endif - - return (m); -} - -/* - * Start output on the pfsync interface. - */ -void -pfsyncstart(struct ifnet *ifp) -{ - struct mbuf *m; - - while ((m = pfsync_if_dequeue(ifp)) != NULL) { -#ifndef __FreeBSD__ - IF_DROP(&ifp->if_snd); -#endif - m_freem(m); - } -} - -int -pfsync_alloc_scrub_memory(struct pfsync_state_peer *s, - struct pf_state_peer *d) -{ - if (s->scrub.scrub_flag && d->scrub == NULL) { -#ifdef __FreeBSD__ - d->scrub = pool_get(&V_pf_state_scrub_pl, PR_NOWAIT | PR_ZERO); -#else - d->scrub = pool_get(&pf_state_scrub_pl, PR_NOWAIT | PR_ZERO); -#endif - if (d->scrub == NULL) - return (ENOMEM); - } - - return (0); -} - -#ifndef __FreeBSD__ -void -pfsync_state_export(struct pfsync_state *sp, struct pf_state *st) -{ - bzero(sp, sizeof(struct pfsync_state)); - - /* copy from state key */ - sp->key[PF_SK_WIRE].addr[0] = st->key[PF_SK_WIRE]->addr[0]; - sp->key[PF_SK_WIRE].addr[1] = st->key[PF_SK_WIRE]->addr[1]; - sp->key[PF_SK_WIRE].port[0] = st->key[PF_SK_WIRE]->port[0]; - sp->key[PF_SK_WIRE].port[1] = st->key[PF_SK_WIRE]->port[1]; - sp->key[PF_SK_STACK].addr[0] = st->key[PF_SK_STACK]->addr[0]; - sp->key[PF_SK_STACK].addr[1] = st->key[PF_SK_STACK]->addr[1]; - sp->key[PF_SK_STACK].port[0] = st->key[PF_SK_STACK]->port[0]; - sp->key[PF_SK_STACK].port[1] = st->key[PF_SK_STACK]->port[1]; - sp->proto = st->key[PF_SK_WIRE]->proto; - sp->af = st->key[PF_SK_WIRE]->af; - - /* copy from state */ - strlcpy(sp->ifname, st->kif->pfik_name, sizeof(sp->ifname)); - bcopy(&st->rt_addr, &sp->rt_addr, sizeof(sp->rt_addr)); - sp->creation = htonl(time_uptime - st->creation); - sp->expire = pf_state_expires(st); - if (sp->expire <= time_second) - sp->expire = htonl(0); - else - sp->expire = htonl(sp->expire - time_second); - - sp->direction = st->direction; - sp->log = st->log; - sp->timeout = st->timeout; - sp->state_flags = st->state_flags; - if (st->src_node) - sp->sync_flags |= PFSYNC_FLAG_SRCNODE; - if (st->nat_src_node) - sp->sync_flags |= PFSYNC_FLAG_NATSRCNODE; - - bcopy(&st->id, &sp->id, sizeof(sp->id)); - sp->creatorid = st->creatorid; - pf_state_peer_hton(&st->src, &sp->src); - pf_state_peer_hton(&st->dst, &sp->dst); - - if (st->rule.ptr == NULL) - sp->rule = htonl(-1); - else - sp->rule = htonl(st->rule.ptr->nr); - if (st->anchor.ptr == NULL) - sp->anchor = htonl(-1); - else - sp->anchor = htonl(st->anchor.ptr->nr); - if (st->nat_rule.ptr == NULL) - sp->nat_rule = htonl(-1); - else - sp->nat_rule = htonl(st->nat_rule.ptr->nr); - - pf_state_counter_hton(st->packets[0], sp->packets[0]); - pf_state_counter_hton(st->packets[1], sp->packets[1]); - pf_state_counter_hton(st->bytes[0], sp->bytes[0]); - pf_state_counter_hton(st->bytes[1], sp->bytes[1]); - -} -#endif - -int -pfsync_state_import(struct pfsync_state *sp, u_int8_t flags) -{ - struct pf_state *st = NULL; - struct pf_state_key *skw = NULL, *sks = NULL; - struct pf_rule *r = NULL; - struct pfi_kif *kif; - int pool_flags; - int error; - -#ifdef __FreeBSD__ - PF_LOCK_ASSERT(); - - if (sp->creatorid == 0 && V_pf_status.debug >= PF_DEBUG_MISC) { -#else - if (sp->creatorid == 0 && pf_status.debug >= PF_DEBUG_MISC) { -#endif - printf("pfsync_state_import: invalid creator id:" - " %08x\n", ntohl(sp->creatorid)); - return (EINVAL); - } - - if ((kif = pfi_kif_get(sp->ifname)) == NULL) { -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) -#else - if (pf_status.debug >= PF_DEBUG_MISC) -#endif - printf("pfsync_state_import: " - "unknown interface: %s\n", sp->ifname); - if (flags & PFSYNC_SI_IOCTL) - return (EINVAL); - return (0); /* skip this state */ - } - - /* - * If the ruleset checksums match or the state is coming from the ioctl, - * it's safe to associate the state with the rule of that number. - */ - if (sp->rule != htonl(-1) && sp->anchor == htonl(-1) && - (flags & (PFSYNC_SI_IOCTL | PFSYNC_SI_CKSUM)) && ntohl(sp->rule) < - pf_main_ruleset.rules[PF_RULESET_FILTER].active.rcount) - r = pf_main_ruleset.rules[ - PF_RULESET_FILTER].active.ptr_array[ntohl(sp->rule)]; - else -#ifdef __FreeBSD__ - r = &V_pf_default_rule; -#else - r = &pf_default_rule; -#endif - - if ((r->max_states && r->states_cur >= r->max_states)) - goto cleanup; - -#ifdef __FreeBSD__ - if (flags & PFSYNC_SI_IOCTL) - pool_flags = PR_WAITOK | PR_ZERO; - else - pool_flags = PR_NOWAIT | PR_ZERO; - - if ((st = pool_get(&V_pf_state_pl, pool_flags)) == NULL) - goto cleanup; -#else - if (flags & PFSYNC_SI_IOCTL) - pool_flags = PR_WAITOK | PR_LIMITFAIL | PR_ZERO; - else - pool_flags = PR_LIMITFAIL | PR_ZERO; - - if ((st = pool_get(&pf_state_pl, pool_flags)) == NULL) - goto cleanup; -#endif - - if ((skw = pf_alloc_state_key(pool_flags)) == NULL) - goto cleanup; - - if (PF_ANEQ(&sp->key[PF_SK_WIRE].addr[0], - &sp->key[PF_SK_STACK].addr[0], sp->af) || - PF_ANEQ(&sp->key[PF_SK_WIRE].addr[1], - &sp->key[PF_SK_STACK].addr[1], sp->af) || - sp->key[PF_SK_WIRE].port[0] != sp->key[PF_SK_STACK].port[0] || - sp->key[PF_SK_WIRE].port[1] != sp->key[PF_SK_STACK].port[1]) { - if ((sks = pf_alloc_state_key(pool_flags)) == NULL) - goto cleanup; - } else - sks = skw; - - /* allocate memory for scrub info */ - if (pfsync_alloc_scrub_memory(&sp->src, &st->src) || - pfsync_alloc_scrub_memory(&sp->dst, &st->dst)) - goto cleanup; - - /* copy to state key(s) */ - skw->addr[0] = sp->key[PF_SK_WIRE].addr[0]; - skw->addr[1] = sp->key[PF_SK_WIRE].addr[1]; - skw->port[0] = sp->key[PF_SK_WIRE].port[0]; - skw->port[1] = sp->key[PF_SK_WIRE].port[1]; - skw->proto = sp->proto; - skw->af = sp->af; - if (sks != skw) { - sks->addr[0] = sp->key[PF_SK_STACK].addr[0]; - sks->addr[1] = sp->key[PF_SK_STACK].addr[1]; - sks->port[0] = sp->key[PF_SK_STACK].port[0]; - sks->port[1] = sp->key[PF_SK_STACK].port[1]; - sks->proto = sp->proto; - sks->af = sp->af; - } - - /* copy to state */ - bcopy(&sp->rt_addr, &st->rt_addr, sizeof(st->rt_addr)); - st->creation = time_uptime - ntohl(sp->creation); - st->expire = time_second; - if (sp->expire) { - /* XXX No adaptive scaling. */ - st->expire -= r->timeout[sp->timeout] - ntohl(sp->expire); - } - - st->expire = ntohl(sp->expire) + time_second; - st->direction = sp->direction; - st->log = sp->log; - st->timeout = sp->timeout; - st->state_flags = sp->state_flags; - - bcopy(sp->id, &st->id, sizeof(st->id)); - st->creatorid = sp->creatorid; - pf_state_peer_ntoh(&sp->src, &st->src); - pf_state_peer_ntoh(&sp->dst, &st->dst); - - st->rule.ptr = r; - st->nat_rule.ptr = NULL; - st->anchor.ptr = NULL; - st->rt_kif = NULL; - - st->pfsync_time = time_uptime; - st->sync_state = PFSYNC_S_NONE; - - /* XXX when we have nat_rule/anchors, use STATE_INC_COUNTERS */ - r->states_cur++; - r->states_tot++; - - if (!ISSET(flags, PFSYNC_SI_IOCTL)) - SET(st->state_flags, PFSTATE_NOSYNC); - - if ((error = pf_state_insert(kif, skw, sks, st)) != 0) { - /* XXX when we have nat_rule/anchors, use STATE_DEC_COUNTERS */ - r->states_cur--; - goto cleanup_state; - } - - if (!ISSET(flags, PFSYNC_SI_IOCTL)) { - CLR(st->state_flags, PFSTATE_NOSYNC); - if (ISSET(st->state_flags, PFSTATE_ACK)) { - pfsync_q_ins(st, PFSYNC_S_IACK); - schednetisr(NETISR_PFSYNC); - } - } - CLR(st->state_flags, PFSTATE_ACK); - - return (0); - -cleanup: - error = ENOMEM; - if (skw == sks) - sks = NULL; -#ifdef __FreeBSD__ - if (skw != NULL) - pool_put(&V_pf_state_key_pl, skw); - if (sks != NULL) - pool_put(&V_pf_state_key_pl, sks); -#else - if (skw != NULL) - pool_put(&pf_state_key_pl, skw); - if (sks != NULL) - pool_put(&pf_state_key_pl, sks); -#endif - -cleanup_state: /* pf_state_insert frees the state keys */ - if (st) { -#ifdef __FreeBSD__ - if (st->dst.scrub) - pool_put(&V_pf_state_scrub_pl, st->dst.scrub); - if (st->src.scrub) - pool_put(&V_pf_state_scrub_pl, st->src.scrub); - pool_put(&V_pf_state_pl, st); -#else - if (st->dst.scrub) - pool_put(&pf_state_scrub_pl, st->dst.scrub); - if (st->src.scrub) - pool_put(&pf_state_scrub_pl, st->src.scrub); - pool_put(&pf_state_pl, st); -#endif - } - return (error); -} - -void -#ifdef __FreeBSD__ -pfsync_input(struct mbuf *m, __unused int off) -#else -pfsync_input(struct mbuf *m, ...) -#endif -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - struct pfsync_pkt pkt; - struct ip *ip = mtod(m, struct ip *); - struct pfsync_header *ph; - struct pfsync_subheader subh; - - int offset; - int rv; - - V_pfsyncstats.pfsyncs_ipackets++; - - /* verify that we have a sync interface configured */ -#ifdef __FreeBSD__ - if (!sc || !sc->sc_sync_if || !V_pf_status.running) -#else - if (!sc || !sc->sc_sync_if || !pf_status.running) -#endif - goto done; - - /* verify that the packet came in on the right interface */ - if (sc->sc_sync_if != m->m_pkthdr.rcvif) { - V_pfsyncstats.pfsyncs_badif++; - goto done; - } - -#ifdef __FreeBSD__ - sc->sc_ifp->if_ipackets++; - sc->sc_ifp->if_ibytes += m->m_pkthdr.len; -#else - sc->sc_if.if_ipackets++; - sc->sc_if.if_ibytes += m->m_pkthdr.len; -#endif - /* verify that the IP TTL is 255. */ - if (ip->ip_ttl != PFSYNC_DFLTTL) { - V_pfsyncstats.pfsyncs_badttl++; - goto done; - } - - offset = ip->ip_hl << 2; - if (m->m_pkthdr.len < offset + sizeof(*ph)) { - V_pfsyncstats.pfsyncs_hdrops++; - goto done; - } - - if (offset + sizeof(*ph) > m->m_len) { - if (m_pullup(m, offset + sizeof(*ph)) == NULL) { - V_pfsyncstats.pfsyncs_hdrops++; - return; - } - ip = mtod(m, struct ip *); - } - ph = (struct pfsync_header *)((char *)ip + offset); - - /* verify the version */ - if (ph->version != PFSYNC_VERSION) { - V_pfsyncstats.pfsyncs_badver++; - goto done; - } - -#if 0 - if (pfsync_input_hmac(m, offset) != 0) { - /* XXX stats */ - goto done; - } -#endif - - /* Cheaper to grab this now than having to mess with mbufs later */ - pkt.ip = ip; - pkt.src = ip->ip_src; - pkt.flags = 0; - -#ifdef __FreeBSD__ - if (!bcmp(&ph->pfcksum, &V_pf_status.pf_chksum, PF_MD5_DIGEST_LENGTH)) -#else - if (!bcmp(&ph->pfcksum, &pf_status.pf_chksum, PF_MD5_DIGEST_LENGTH)) -#endif - pkt.flags |= PFSYNC_SI_CKSUM; - - offset += sizeof(*ph); - for (;;) { - m_copydata(m, offset, sizeof(subh), (caddr_t)&subh); - offset += sizeof(subh); - - if (subh.action >= PFSYNC_ACT_MAX) { - V_pfsyncstats.pfsyncs_badact++; - goto done; - } - - rv = (*pfsync_acts[subh.action])(&pkt, m, offset, - ntohs(subh.count)); - if (rv == -1) - return; - - offset += rv; - } - -done: - m_freem(m); -} - -int -pfsync_in_clr(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - struct pfsync_clr *clr; - struct mbuf *mp; - int len = sizeof(*clr) * count; - int i, offp; - - struct pf_state *st, *nexts; - struct pf_state_key *sk, *nextsk; - struct pf_state_item *si; - u_int32_t creatorid; - int s; - - mp = m_pulldown(m, offset, len, &offp); - if (mp == NULL) { - V_pfsyncstats.pfsyncs_badlen++; - return (-1); - } - clr = (struct pfsync_clr *)(mp->m_data + offp); - - s = splsoftnet(); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - for (i = 0; i < count; i++) { - creatorid = clr[i].creatorid; - - if (clr[i].ifname[0] == '\0') { -#ifdef __FreeBSD__ - for (st = RB_MIN(pf_state_tree_id, &V_tree_id); - st; st = nexts) { - nexts = RB_NEXT(pf_state_tree_id, &V_tree_id, st); -#else - for (st = RB_MIN(pf_state_tree_id, &tree_id); - st; st = nexts) { - nexts = RB_NEXT(pf_state_tree_id, &tree_id, st); -#endif - if (st->creatorid == creatorid) { - SET(st->state_flags, PFSTATE_NOSYNC); - pf_unlink_state(st); - } - } - } else { - if (pfi_kif_get(clr[i].ifname) == NULL) - continue; - - /* XXX correct? */ -#ifdef __FreeBSD__ - for (sk = RB_MIN(pf_state_tree, &V_pf_statetbl); -#else - for (sk = RB_MIN(pf_state_tree, &pf_statetbl); -#endif - sk; sk = nextsk) { - nextsk = RB_NEXT(pf_state_tree, -#ifdef __FreeBSD__ - &V_pf_statetbl, sk); -#else - &pf_statetbl, sk); -#endif - TAILQ_FOREACH(si, &sk->states, entry) { - if (si->s->creatorid == creatorid) { - SET(si->s->state_flags, - PFSTATE_NOSYNC); - pf_unlink_state(si->s); - } - } - } - } - } -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); - - return (len); -} - -int -pfsync_in_ins(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - struct mbuf *mp; - struct pfsync_state *sa, *sp; - int len = sizeof(*sp) * count; - int i, offp; - - int s; - - mp = m_pulldown(m, offset, len, &offp); - if (mp == NULL) { - V_pfsyncstats.pfsyncs_badlen++; - return (-1); - } - sa = (struct pfsync_state *)(mp->m_data + offp); - - s = splsoftnet(); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - for (i = 0; i < count; i++) { - sp = &sa[i]; - - /* check for invalid values */ - if (sp->timeout >= PFTM_MAX || - sp->src.state > PF_TCPS_PROXY_DST || - sp->dst.state > PF_TCPS_PROXY_DST || - sp->direction > PF_OUT || - (sp->af != AF_INET && sp->af != AF_INET6)) { -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) { -#else - if (pf_status.debug >= PF_DEBUG_MISC) { -#endif - printf("pfsync_input: PFSYNC5_ACT_INS: " - "invalid value\n"); - } - V_pfsyncstats.pfsyncs_badval++; - continue; - } - - if (pfsync_state_import(sp, pkt->flags) == ENOMEM) { - /* drop out, but process the rest of the actions */ - break; - } - } -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); - - return (len); -} - -int -pfsync_in_iack(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - struct pfsync_ins_ack *ia, *iaa; - struct pf_state_cmp id_key; - struct pf_state *st; - - struct mbuf *mp; - int len = count * sizeof(*ia); - int offp, i; - int s; - - mp = m_pulldown(m, offset, len, &offp); - if (mp == NULL) { - V_pfsyncstats.pfsyncs_badlen++; - return (-1); - } - iaa = (struct pfsync_ins_ack *)(mp->m_data + offp); - - s = splsoftnet(); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - for (i = 0; i < count; i++) { - ia = &iaa[i]; - - bcopy(&ia->id, &id_key.id, sizeof(id_key.id)); - id_key.creatorid = ia->creatorid; - - st = pf_find_state_byid(&id_key); - if (st == NULL) - continue; - - if (ISSET(st->state_flags, PFSTATE_ACK)) - pfsync_deferred(st, 0); - } -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); - /* - * XXX this is not yet implemented, but we know the size of the - * message so we can skip it. - */ - - return (count * sizeof(struct pfsync_ins_ack)); -} - -int -pfsync_upd_tcp(struct pf_state *st, struct pfsync_state_peer *src, - struct pfsync_state_peer *dst) -{ - int sfail = 0; - - /* - * The state should never go backwards except - * for syn-proxy states. Neither should the - * sequence window slide backwards. - */ - if (st->src.state > src->state && - (st->src.state < PF_TCPS_PROXY_SRC || - src->state >= PF_TCPS_PROXY_SRC)) - sfail = 1; - else if (SEQ_GT(st->src.seqlo, ntohl(src->seqlo))) - sfail = 3; - else if (st->dst.state > dst->state) { - /* There might still be useful - * information about the src state here, - * so import that part of the update, - * then "fail" so we send the updated - * state back to the peer who is missing - * our what we know. */ - pf_state_peer_ntoh(src, &st->src); - /* XXX do anything with timeouts? */ - sfail = 7; - } else if (st->dst.state >= TCPS_SYN_SENT && - SEQ_GT(st->dst.seqlo, ntohl(dst->seqlo))) - sfail = 4; - - return (sfail); -} - -int -pfsync_in_upd(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - struct pfsync_state *sa, *sp; - struct pf_state_cmp id_key; - struct pf_state_key *sk; - struct pf_state *st; - int sfail; - - struct mbuf *mp; - int len = count * sizeof(*sp); - int offp, i; - int s; - - mp = m_pulldown(m, offset, len, &offp); - if (mp == NULL) { - V_pfsyncstats.pfsyncs_badlen++; - return (-1); - } - sa = (struct pfsync_state *)(mp->m_data + offp); - - s = splsoftnet(); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - for (i = 0; i < count; i++) { - sp = &sa[i]; - - /* check for invalid values */ - if (sp->timeout >= PFTM_MAX || - sp->src.state > PF_TCPS_PROXY_DST || - sp->dst.state > PF_TCPS_PROXY_DST) { -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) { -#else - if (pf_status.debug >= PF_DEBUG_MISC) { -#endif - printf("pfsync_input: PFSYNC_ACT_UPD: " - "invalid value\n"); - } - V_pfsyncstats.pfsyncs_badval++; - continue; - } - - bcopy(sp->id, &id_key.id, sizeof(id_key.id)); - id_key.creatorid = sp->creatorid; - - st = pf_find_state_byid(&id_key); - if (st == NULL) { - /* insert the update */ - if (pfsync_state_import(sp, 0)) - V_pfsyncstats.pfsyncs_badstate++; - continue; - } - - if (ISSET(st->state_flags, PFSTATE_ACK)) - pfsync_deferred(st, 1); - - sk = st->key[PF_SK_WIRE]; /* XXX right one? */ - sfail = 0; - if (sk->proto == IPPROTO_TCP) - sfail = pfsync_upd_tcp(st, &sp->src, &sp->dst); - else { - /* - * Non-TCP protocol state machine always go - * forwards - */ - if (st->src.state > sp->src.state) - sfail = 5; - else if (st->dst.state > sp->dst.state) - sfail = 6; - } - - if (sfail) { -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) { -#else - if (pf_status.debug >= PF_DEBUG_MISC) { -#endif - printf("pfsync: %s stale update (%d)" - " id: %016llx creatorid: %08x\n", - (sfail < 7 ? "ignoring" : "partial"), - sfail, betoh64(st->id), - ntohl(st->creatorid)); - } - V_pfsyncstats.pfsyncs_stale++; - - pfsync_update_state(st); - schednetisr(NETISR_PFSYNC); - continue; - } - pfsync_alloc_scrub_memory(&sp->dst, &st->dst); - pf_state_peer_ntoh(&sp->src, &st->src); - pf_state_peer_ntoh(&sp->dst, &st->dst); - st->expire = ntohl(sp->expire) + time_second; - st->timeout = sp->timeout; - st->pfsync_time = time_uptime; - } -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); - - return (len); -} - -int -pfsync_in_upd_c(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - struct pfsync_upd_c *ua, *up; - struct pf_state_key *sk; - struct pf_state_cmp id_key; - struct pf_state *st; - - int len = count * sizeof(*up); - int sfail; - - struct mbuf *mp; - int offp, i; - int s; - - mp = m_pulldown(m, offset, len, &offp); - if (mp == NULL) { - V_pfsyncstats.pfsyncs_badlen++; - return (-1); - } - ua = (struct pfsync_upd_c *)(mp->m_data + offp); - - s = splsoftnet(); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - for (i = 0; i < count; i++) { - up = &ua[i]; - - /* check for invalid values */ - if (up->timeout >= PFTM_MAX || - up->src.state > PF_TCPS_PROXY_DST || - up->dst.state > PF_TCPS_PROXY_DST) { -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) { -#else - if (pf_status.debug >= PF_DEBUG_MISC) { -#endif - printf("pfsync_input: " - "PFSYNC_ACT_UPD_C: " - "invalid value\n"); - } - V_pfsyncstats.pfsyncs_badval++; - continue; - } - - bcopy(&up->id, &id_key.id, sizeof(id_key.id)); - id_key.creatorid = up->creatorid; - - st = pf_find_state_byid(&id_key); - if (st == NULL) { - /* We don't have this state. Ask for it. */ - pfsync_request_update(id_key.creatorid, id_key.id); - continue; - } - - if (ISSET(st->state_flags, PFSTATE_ACK)) - pfsync_deferred(st, 1); - - sk = st->key[PF_SK_WIRE]; /* XXX right one? */ - sfail = 0; - if (sk->proto == IPPROTO_TCP) - sfail = pfsync_upd_tcp(st, &up->src, &up->dst); - else { - /* - * Non-TCP protocol state machine always go forwards - */ - if (st->src.state > up->src.state) - sfail = 5; - else if (st->dst.state > up->dst.state) - sfail = 6; - } - - if (sfail) { -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) { -#else - if (pf_status.debug >= PF_DEBUG_MISC) { -#endif - printf("pfsync: ignoring stale update " - "(%d) id: %016llx " - "creatorid: %08x\n", sfail, - betoh64(st->id), - ntohl(st->creatorid)); - } - V_pfsyncstats.pfsyncs_stale++; - - pfsync_update_state(st); - schednetisr(NETISR_PFSYNC); - continue; - } - pfsync_alloc_scrub_memory(&up->dst, &st->dst); - pf_state_peer_ntoh(&up->src, &st->src); - pf_state_peer_ntoh(&up->dst, &st->dst); - st->expire = ntohl(up->expire) + time_second; - st->timeout = up->timeout; - st->pfsync_time = time_uptime; - } -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); - - return (len); -} - -int -pfsync_in_ureq(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - struct pfsync_upd_req *ur, *ura; - struct mbuf *mp; - int len = count * sizeof(*ur); - int i, offp; - - struct pf_state_cmp id_key; - struct pf_state *st; - - mp = m_pulldown(m, offset, len, &offp); - if (mp == NULL) { - V_pfsyncstats.pfsyncs_badlen++; - return (-1); - } - ura = (struct pfsync_upd_req *)(mp->m_data + offp); - -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - for (i = 0; i < count; i++) { - ur = &ura[i]; - - bcopy(&ur->id, &id_key.id, sizeof(id_key.id)); - id_key.creatorid = ur->creatorid; - - if (id_key.id == 0 && id_key.creatorid == 0) - pfsync_bulk_start(); - else { - st = pf_find_state_byid(&id_key); - if (st == NULL) { - V_pfsyncstats.pfsyncs_badstate++; - continue; - } - if (ISSET(st->state_flags, PFSTATE_NOSYNC)) - continue; - - pfsync_update_state_req(st); - } - } -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - - return (len); -} - -int -pfsync_in_del(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - struct mbuf *mp; - struct pfsync_state *sa, *sp; - struct pf_state_cmp id_key; - struct pf_state *st; - int len = count * sizeof(*sp); - int offp, i; - int s; - - mp = m_pulldown(m, offset, len, &offp); - if (mp == NULL) { - V_pfsyncstats.pfsyncs_badlen++; - return (-1); - } - sa = (struct pfsync_state *)(mp->m_data + offp); - - s = splsoftnet(); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - for (i = 0; i < count; i++) { - sp = &sa[i]; - - bcopy(sp->id, &id_key.id, sizeof(id_key.id)); - id_key.creatorid = sp->creatorid; - - st = pf_find_state_byid(&id_key); - if (st == NULL) { - V_pfsyncstats.pfsyncs_badstate++; - continue; - } - SET(st->state_flags, PFSTATE_NOSYNC); - pf_unlink_state(st); - } -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); - - return (len); -} - -int -pfsync_in_del_c(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - struct mbuf *mp; - struct pfsync_del_c *sa, *sp; - struct pf_state_cmp id_key; - struct pf_state *st; - int len = count * sizeof(*sp); - int offp, i; - int s; - - mp = m_pulldown(m, offset, len, &offp); - if (mp == NULL) { - V_pfsyncstats.pfsyncs_badlen++; - return (-1); - } - sa = (struct pfsync_del_c *)(mp->m_data + offp); - - s = splsoftnet(); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - for (i = 0; i < count; i++) { - sp = &sa[i]; - - bcopy(&sp->id, &id_key.id, sizeof(id_key.id)); - id_key.creatorid = sp->creatorid; - - st = pf_find_state_byid(&id_key); - if (st == NULL) { - V_pfsyncstats.pfsyncs_badstate++; - continue; - } - - SET(st->state_flags, PFSTATE_NOSYNC); - pf_unlink_state(st); - } -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); - - return (len); -} - -int -pfsync_in_bus(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - struct pfsync_bus *bus; - struct mbuf *mp; - int len = count * sizeof(*bus); - int offp; - - /* If we're not waiting for a bulk update, who cares. */ - if (sc->sc_ureq_sent == 0) - return (len); - - mp = m_pulldown(m, offset, len, &offp); - if (mp == NULL) { - V_pfsyncstats.pfsyncs_badlen++; - return (-1); - } - bus = (struct pfsync_bus *)(mp->m_data + offp); - - switch (bus->status) { - case PFSYNC_BUS_START: -#ifdef __FreeBSD__ - callout_reset(&sc->sc_bulkfail_tmo, 4 * hz + - V_pf_pool_limits[PF_LIMIT_STATES].limit / - ((sc->sc_ifp->if_mtu - PFSYNC_MINPKT) / - sizeof(struct pfsync_state)), - pfsync_bulk_fail, V_pfsyncif); -#else - timeout_add(&sc->sc_bulkfail_tmo, 4 * hz + - pf_pool_limits[PF_LIMIT_STATES].limit / - ((sc->sc_if.if_mtu - PFSYNC_MINPKT) / - sizeof(struct pfsync_state))); -#endif -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) -#else - if (pf_status.debug >= PF_DEBUG_MISC) -#endif - printf("pfsync: received bulk update start\n"); - break; - - case PFSYNC_BUS_END: - if (time_uptime - ntohl(bus->endtime) >= - sc->sc_ureq_sent) { - /* that's it, we're happy */ - sc->sc_ureq_sent = 0; - sc->sc_bulk_tries = 0; - timeout_del(&sc->sc_bulkfail_tmo); -#if NCARP > 0 -#ifdef notyet -#ifdef __FreeBSD__ - if (!sc->pfsync_sync_ok) -#else - if (!pfsync_sync_ok) -#endif - carp_group_demote_adj(&sc->sc_if, -1); -#endif -#endif -#ifdef __FreeBSD__ - sc->pfsync_sync_ok = 1; -#else - pfsync_sync_ok = 1; -#endif -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) -#else - if (pf_status.debug >= PF_DEBUG_MISC) -#endif - printf("pfsync: received valid " - "bulk update end\n"); - } else { -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) -#else - if (pf_status.debug >= PF_DEBUG_MISC) -#endif - printf("pfsync: received invalid " - "bulk update end: bad timestamp\n"); - } - break; - } - - return (len); -} - -int -pfsync_in_tdb(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - int len = count * sizeof(struct pfsync_tdb); - -#if defined(IPSEC) - struct pfsync_tdb *tp; - struct mbuf *mp; - int offp; - int i; - int s; - - mp = m_pulldown(m, offset, len, &offp); - if (mp == NULL) { - V_pfsyncstats.pfsyncs_badlen++; - return (-1); - } - tp = (struct pfsync_tdb *)(mp->m_data + offp); - - s = splsoftnet(); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - for (i = 0; i < count; i++) - pfsync_update_net_tdb(&tp[i]); -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); -#endif - - return (len); -} - -#if defined(IPSEC) -/* Update an in-kernel tdb. Silently fail if no tdb is found. */ -void -pfsync_update_net_tdb(struct pfsync_tdb *pt) -{ - struct tdb *tdb; - int s; - - /* check for invalid values */ - if (ntohl(pt->spi) <= SPI_RESERVED_MAX || - (pt->dst.sa.sa_family != AF_INET && - pt->dst.sa.sa_family != AF_INET6)) - goto bad; - - s = spltdb(); - tdb = gettdb(pt->spi, &pt->dst, pt->sproto); - if (tdb) { - pt->rpl = ntohl(pt->rpl); - pt->cur_bytes = betoh64(pt->cur_bytes); - - /* Neither replay nor byte counter should ever decrease. */ - if (pt->rpl < tdb->tdb_rpl || - pt->cur_bytes < tdb->tdb_cur_bytes) { - splx(s); - goto bad; - } - - tdb->tdb_rpl = pt->rpl; - tdb->tdb_cur_bytes = pt->cur_bytes; - } - splx(s); - return; - -bad: -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) -#else - if (pf_status.debug >= PF_DEBUG_MISC) -#endif - printf("pfsync_insert: PFSYNC_ACT_TDB_UPD: " - "invalid value\n"); - V_pfsyncstats.pfsyncs_badstate++; - return; -} -#endif - - -int -pfsync_in_eof(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - /* check if we are at the right place in the packet */ - if (offset != m->m_pkthdr.len - sizeof(struct pfsync_eof)) - V_pfsyncstats.pfsyncs_badact++; - - /* we're done. free and let the caller return */ - m_freem(m); - return (-1); -} - -int -pfsync_in_error(struct pfsync_pkt *pkt, struct mbuf *m, int offset, int count) -{ - V_pfsyncstats.pfsyncs_badact++; - - m_freem(m); - return (-1); -} - -int -pfsyncoutput(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst, -#ifdef __FreeBSD__ - struct route *rt) -#else - struct rtentry *rt) -#endif -{ - m_freem(m); - return (0); -} - -/* ARGSUSED */ -int -pfsyncioctl(struct ifnet *ifp, u_long cmd, caddr_t data) -{ -#ifndef __FreeBSD__ - struct proc *p = curproc; -#endif - struct pfsync_softc *sc = ifp->if_softc; - struct ifreq *ifr = (struct ifreq *)data; - struct ip_moptions *imo = &sc->sc_imo; - struct pfsyncreq pfsyncr; - struct ifnet *sifp; - struct ip *ip; - int s, error; - - switch (cmd) { -#if 0 - case SIOCSIFADDR: - case SIOCAIFADDR: - case SIOCSIFDSTADDR: -#endif - case SIOCSIFFLAGS: -#ifdef __FreeBSD__ - if (ifp->if_flags & IFF_UP) - ifp->if_drv_flags |= IFF_DRV_RUNNING; - else - ifp->if_drv_flags &= ~IFF_DRV_RUNNING; -#else - if (ifp->if_flags & IFF_UP) - ifp->if_flags |= IFF_RUNNING; - else - ifp->if_flags &= ~IFF_RUNNING; -#endif - break; - case SIOCSIFMTU: - if (!sc->sc_sync_if || - ifr->ifr_mtu <= PFSYNC_MINPKT || - ifr->ifr_mtu > sc->sc_sync_if->if_mtu) - return (EINVAL); - if (ifr->ifr_mtu < ifp->if_mtu) { - s = splnet(); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - pfsync_sendout(); -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); - } - ifp->if_mtu = ifr->ifr_mtu; - break; - case SIOCGETPFSYNC: - bzero(&pfsyncr, sizeof(pfsyncr)); - if (sc->sc_sync_if) { - strlcpy(pfsyncr.pfsyncr_syncdev, - sc->sc_sync_if->if_xname, IFNAMSIZ); - } - pfsyncr.pfsyncr_syncpeer = sc->sc_sync_peer; - pfsyncr.pfsyncr_maxupdates = sc->sc_maxupdates; - return (copyout(&pfsyncr, ifr->ifr_data, sizeof(pfsyncr))); - - case SIOCSETPFSYNC: -#ifdef __FreeBSD__ - if ((error = priv_check(curthread, PRIV_NETINET_PF)) != 0) -#else - if ((error = suser(p, p->p_acflag)) != 0) -#endif - return (error); - if ((error = copyin(ifr->ifr_data, &pfsyncr, sizeof(pfsyncr)))) - return (error); - -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - if (pfsyncr.pfsyncr_syncpeer.s_addr == 0) -#ifdef __FreeBSD__ - sc->sc_sync_peer.s_addr = htonl(INADDR_PFSYNC_GROUP); -#else - sc->sc_sync_peer.s_addr = INADDR_PFSYNC_GROUP; -#endif - else - sc->sc_sync_peer.s_addr = - pfsyncr.pfsyncr_syncpeer.s_addr; - - if (pfsyncr.pfsyncr_maxupdates > 255) -#ifdef __FreeBSD__ - { - PF_UNLOCK(); -#endif - return (EINVAL); -#ifdef __FreeBSD__ - } -#endif - sc->sc_maxupdates = pfsyncr.pfsyncr_maxupdates; - - if (pfsyncr.pfsyncr_syncdev[0] == 0) { - sc->sc_sync_if = NULL; -#ifdef __FreeBSD__ - PF_UNLOCK(); - if (imo->imo_membership) - pfsync_multicast_cleanup(sc); -#else - if (imo->imo_num_memberships > 0) { - in_delmulti(imo->imo_membership[ - --imo->imo_num_memberships]); - imo->imo_multicast_ifp = NULL; - } -#endif - break; - } - -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - if ((sifp = ifunit(pfsyncr.pfsyncr_syncdev)) == NULL) - return (EINVAL); - -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - s = splnet(); -#ifdef __FreeBSD__ - if (sifp->if_mtu < sc->sc_ifp->if_mtu || -#else - if (sifp->if_mtu < sc->sc_if.if_mtu || -#endif - (sc->sc_sync_if != NULL && - sifp->if_mtu < sc->sc_sync_if->if_mtu) || - sifp->if_mtu < MCLBYTES - sizeof(struct ip)) - pfsync_sendout(); - sc->sc_sync_if = sifp; - -#ifdef __FreeBSD__ - if (imo->imo_membership) { - PF_UNLOCK(); - pfsync_multicast_cleanup(sc); - PF_LOCK(); - } -#else - if (imo->imo_num_memberships > 0) { - in_delmulti(imo->imo_membership[--imo->imo_num_memberships]); - imo->imo_multicast_ifp = NULL; - } -#endif - -#ifdef __FreeBSD__ - if (sc->sc_sync_if && - sc->sc_sync_peer.s_addr == htonl(INADDR_PFSYNC_GROUP)) { - PF_UNLOCK(); - error = pfsync_multicast_setup(sc); - if (error) - return (error); - PF_LOCK(); - } -#else - if (sc->sc_sync_if && - sc->sc_sync_peer.s_addr == INADDR_PFSYNC_GROUP) { - struct in_addr addr; - - if (!(sc->sc_sync_if->if_flags & IFF_MULTICAST)) { - sc->sc_sync_if = NULL; - splx(s); - return (EADDRNOTAVAIL); - } - - addr.s_addr = INADDR_PFSYNC_GROUP; - - if ((imo->imo_membership[0] = - in_addmulti(&addr, sc->sc_sync_if)) == NULL) { - sc->sc_sync_if = NULL; - splx(s); - return (ENOBUFS); - } - imo->imo_num_memberships++; - imo->imo_multicast_ifp = sc->sc_sync_if; - imo->imo_multicast_ttl = PFSYNC_DFLTTL; - imo->imo_multicast_loop = 0; - } -#endif /* !__FreeBSD__ */ - - ip = &sc->sc_template; - bzero(ip, sizeof(*ip)); - ip->ip_v = IPVERSION; - ip->ip_hl = sizeof(sc->sc_template) >> 2; - ip->ip_tos = IPTOS_LOWDELAY; - /* len and id are set later */ -#ifdef __FreeBSD__ - ip->ip_off = IP_DF; -#else - ip->ip_off = htons(IP_DF); -#endif - ip->ip_ttl = PFSYNC_DFLTTL; - ip->ip_p = IPPROTO_PFSYNC; - ip->ip_src.s_addr = INADDR_ANY; - ip->ip_dst.s_addr = sc->sc_sync_peer.s_addr; - - if (sc->sc_sync_if) { - /* Request a full state table update. */ - sc->sc_ureq_sent = time_uptime; -#if NCARP > 0 -#ifdef notyet -#ifdef __FreeBSD__ - if (sc->pfsync_sync_ok) -#else - if (pfsync_sync_ok) -#endif - carp_group_demote_adj(&sc->sc_if, 1); -#endif -#endif -#ifdef __FreeBSD__ - sc->pfsync_sync_ok = 0; -#else - pfsync_sync_ok = 0; -#endif -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) -#else - if (pf_status.debug >= PF_DEBUG_MISC) -#endif - printf("pfsync: requesting bulk update\n"); -#ifdef __FreeBSD__ - callout_reset(&sc->sc_bulkfail_tmo, 5 * hz, - pfsync_bulk_fail, V_pfsyncif); -#else - timeout_add_sec(&sc->sc_bulkfail_tmo, 5); -#endif - pfsync_request_update(0, 0); - } -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); - - break; - - default: - return (ENOTTY); - } - - return (0); -} - -int -pfsync_out_state(struct pf_state *st, struct mbuf *m, int offset) -{ - struct pfsync_state *sp = (struct pfsync_state *)(m->m_data + offset); - - pfsync_state_export(sp, st); - - return (sizeof(*sp)); -} - -int -pfsync_out_iack(struct pf_state *st, struct mbuf *m, int offset) -{ - struct pfsync_ins_ack *iack = - (struct pfsync_ins_ack *)(m->m_data + offset); - - iack->id = st->id; - iack->creatorid = st->creatorid; - - return (sizeof(*iack)); -} - -int -pfsync_out_upd_c(struct pf_state *st, struct mbuf *m, int offset) -{ - struct pfsync_upd_c *up = (struct pfsync_upd_c *)(m->m_data + offset); - - bzero(up, sizeof(*up)); - up->id = st->id; - pf_state_peer_hton(&st->src, &up->src); - pf_state_peer_hton(&st->dst, &up->dst); - up->creatorid = st->creatorid; - - up->expire = pf_state_expires(st); - if (up->expire <= time_second) - up->expire = htonl(0); - else - up->expire = htonl(up->expire - time_second); - up->timeout = st->timeout; - - return (sizeof(*up)); -} - -int -pfsync_out_del(struct pf_state *st, struct mbuf *m, int offset) -{ - struct pfsync_del_c *dp = (struct pfsync_del_c *)(m->m_data + offset); - - dp->id = st->id; - dp->creatorid = st->creatorid; - - SET(st->state_flags, PFSTATE_NOSYNC); - - return (sizeof(*dp)); -} - -void -pfsync_drop(struct pfsync_softc *sc) -{ - struct pf_state *st; - struct pfsync_upd_req_item *ur; -#ifdef notyet - struct tdb *t; -#endif - int q; - - for (q = 0; q < PFSYNC_S_COUNT; q++) { - if (TAILQ_EMPTY(&sc->sc_qs[q])) - continue; - - TAILQ_FOREACH(st, &sc->sc_qs[q], sync_list) { -#ifdef PFSYNC_DEBUG -#ifdef __FreeBSD__ - KASSERT(st->sync_state == q, - ("%s: st->sync_state == q", - __FUNCTION__)); -#else - KASSERT(st->sync_state == q); -#endif -#endif - st->sync_state = PFSYNC_S_NONE; - } - TAILQ_INIT(&sc->sc_qs[q]); - } - - while ((ur = TAILQ_FIRST(&sc->sc_upd_req_list)) != NULL) { - TAILQ_REMOVE(&sc->sc_upd_req_list, ur, ur_entry); - pool_put(&sc->sc_pool, ur); - } - - sc->sc_plus = NULL; - -#ifdef notyet - if (!TAILQ_EMPTY(&sc->sc_tdb_q)) { - TAILQ_FOREACH(t, &sc->sc_tdb_q, tdb_sync_entry) - CLR(t->tdb_flags, TDBF_PFSYNC); - - TAILQ_INIT(&sc->sc_tdb_q); - } -#endif - - sc->sc_len = PFSYNC_MINPKT; -} - -#ifdef __FreeBSD__ -void pfsync_sendout() -{ - pfsync_sendout1(1); -} - -static void -pfsync_sendout1(int schedswi) -{ - struct pfsync_softc *sc = V_pfsyncif; -#else -void -pfsync_sendout(void) -{ - struct pfsync_softc *sc = pfsyncif; -#endif -#if NBPFILTER > 0 -#ifdef __FreeBSD__ - struct ifnet *ifp = sc->sc_ifp; -#else - struct ifnet *ifp = &sc->sc_if; -#endif -#endif - struct mbuf *m; - struct ip *ip; - struct pfsync_header *ph; - struct pfsync_subheader *subh; - struct pf_state *st; - struct pfsync_upd_req_item *ur; -#ifdef notyet - struct tdb *t; -#endif -#ifdef __FreeBSD__ - size_t pktlen; -#endif - int offset; - int q, count = 0; - -#ifdef __FreeBSD__ - PF_LOCK_ASSERT(); -#else - splassert(IPL_NET); -#endif - - if (sc == NULL || sc->sc_len == PFSYNC_MINPKT) - return; - -#if NBPFILTER > 0 - if (ifp->if_bpf == NULL && sc->sc_sync_if == NULL) { -#else - if (sc->sc_sync_if == NULL) { -#endif - pfsync_drop(sc); - return; - } - - MGETHDR(m, M_DONTWAIT, MT_DATA); - if (m == NULL) { -#ifdef __FreeBSD__ - sc->sc_ifp->if_oerrors++; -#else - sc->sc_if.if_oerrors++; -#endif - V_pfsyncstats.pfsyncs_onomem++; - pfsync_drop(sc); - return; - } - -#ifdef __FreeBSD__ - pktlen = max_linkhdr + sc->sc_len; - if (pktlen > MHLEN) { - /* Find the right pool to allocate from. */ - /* XXX: This is ugly. */ - m_cljget(m, M_DONTWAIT, pktlen <= MCLBYTES ? MCLBYTES : -#if MJUMPAGESIZE != MCLBYTES - pktlen <= MJUMPAGESIZE ? MJUMPAGESIZE : -#endif - pktlen <= MJUM9BYTES ? MJUM9BYTES : MJUM16BYTES); -#else - if (max_linkhdr + sc->sc_len > MHLEN) { - MCLGETI(m, M_DONTWAIT, NULL, max_linkhdr + sc->sc_len); -#endif - if (!ISSET(m->m_flags, M_EXT)) { - m_free(m); -#ifdef __FreeBSD__ - sc->sc_ifp->if_oerrors++; -#else - sc->sc_if.if_oerrors++; -#endif - V_pfsyncstats.pfsyncs_onomem++; - pfsync_drop(sc); - return; - } - } - m->m_data += max_linkhdr; - m->m_len = m->m_pkthdr.len = sc->sc_len; - - /* build the ip header */ - ip = (struct ip *)m->m_data; - bcopy(&sc->sc_template, ip, sizeof(*ip)); - offset = sizeof(*ip); - -#ifdef __FreeBSD__ - ip->ip_len = m->m_pkthdr.len; -#else - ip->ip_len = htons(m->m_pkthdr.len); -#endif - ip->ip_id = htons(ip_randomid()); - - /* build the pfsync header */ - ph = (struct pfsync_header *)(m->m_data + offset); - bzero(ph, sizeof(*ph)); - offset += sizeof(*ph); - - ph->version = PFSYNC_VERSION; - ph->len = htons(sc->sc_len - sizeof(*ip)); -#ifdef __FreeBSD__ - bcopy(V_pf_status.pf_chksum, ph->pfcksum, PF_MD5_DIGEST_LENGTH); -#else - bcopy(pf_status.pf_chksum, ph->pfcksum, PF_MD5_DIGEST_LENGTH); -#endif - - /* walk the queues */ - for (q = 0; q < PFSYNC_S_COUNT; q++) { - if (TAILQ_EMPTY(&sc->sc_qs[q])) - continue; - - subh = (struct pfsync_subheader *)(m->m_data + offset); - offset += sizeof(*subh); - - count = 0; - TAILQ_FOREACH(st, &sc->sc_qs[q], sync_list) { -#ifdef PFSYNC_DEBUG -#ifdef __FreeBSD__ - KASSERT(st->sync_state == q, - ("%s: st->sync_state == q", - __FUNCTION__)); -#else - KASSERT(st->sync_state == q); -#endif -#endif - - offset += pfsync_qs[q].write(st, m, offset); - st->sync_state = PFSYNC_S_NONE; - count++; - } - TAILQ_INIT(&sc->sc_qs[q]); - - bzero(subh, sizeof(*subh)); - subh->action = pfsync_qs[q].action; - subh->count = htons(count); - } - - if (!TAILQ_EMPTY(&sc->sc_upd_req_list)) { - subh = (struct pfsync_subheader *)(m->m_data + offset); - offset += sizeof(*subh); - - count = 0; - while ((ur = TAILQ_FIRST(&sc->sc_upd_req_list)) != NULL) { - TAILQ_REMOVE(&sc->sc_upd_req_list, ur, ur_entry); - - bcopy(&ur->ur_msg, m->m_data + offset, - sizeof(ur->ur_msg)); - offset += sizeof(ur->ur_msg); - - pool_put(&sc->sc_pool, ur); - - count++; - } - - bzero(subh, sizeof(*subh)); - subh->action = PFSYNC_ACT_UPD_REQ; - subh->count = htons(count); - } - - /* has someone built a custom region for us to add? */ - if (sc->sc_plus != NULL) { - bcopy(sc->sc_plus, m->m_data + offset, sc->sc_pluslen); - offset += sc->sc_pluslen; - - sc->sc_plus = NULL; - } - -#ifdef notyet - if (!TAILQ_EMPTY(&sc->sc_tdb_q)) { - subh = (struct pfsync_subheader *)(m->m_data + offset); - offset += sizeof(*subh); - - count = 0; - TAILQ_FOREACH(t, &sc->sc_tdb_q, tdb_sync_entry) { - offset += pfsync_out_tdb(t, m, offset); - CLR(t->tdb_flags, TDBF_PFSYNC); - - count++; - } - TAILQ_INIT(&sc->sc_tdb_q); - - bzero(subh, sizeof(*subh)); - subh->action = PFSYNC_ACT_TDB; - subh->count = htons(count); - } -#endif - - subh = (struct pfsync_subheader *)(m->m_data + offset); - offset += sizeof(*subh); - - bzero(subh, sizeof(*subh)); - subh->action = PFSYNC_ACT_EOF; - subh->count = htons(1); - - /* XXX write checksum in EOF here */ - - /* we're done, let's put it on the wire */ -#if NBPFILTER > 0 - if (ifp->if_bpf) { - m->m_data += sizeof(*ip); - m->m_len = m->m_pkthdr.len = sc->sc_len - sizeof(*ip); -#ifdef __FreeBSD__ - BPF_MTAP(ifp, m); -#else - bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_OUT); -#endif - m->m_data -= sizeof(*ip); - m->m_len = m->m_pkthdr.len = sc->sc_len; - } - - if (sc->sc_sync_if == NULL) { - sc->sc_len = PFSYNC_MINPKT; - m_freem(m); - return; - } -#endif - -#ifdef __FreeBSD__ - sc->sc_ifp->if_opackets++; - sc->sc_ifp->if_obytes += m->m_pkthdr.len; - sc->sc_len = PFSYNC_MINPKT; - - if (!_IF_QFULL(&sc->sc_ifp->if_snd)) - _IF_ENQUEUE(&sc->sc_ifp->if_snd, m); - else { - m_freem(m); - sc->sc_ifp->if_snd.ifq_drops++; - } - if (schedswi) - swi_sched(V_pfsync_swi_cookie, 0); -#else - sc->sc_if.if_opackets++; - sc->sc_if.if_obytes += m->m_pkthdr.len; - - if (ip_output(m, NULL, NULL, IP_RAWOUTPUT, &sc->sc_imo, NULL) == 0) - pfsyncstats.pfsyncs_opackets++; - else - pfsyncstats.pfsyncs_oerrors++; - - /* start again */ - sc->sc_len = PFSYNC_MINPKT; -#endif -} - -void -pfsync_insert_state(struct pf_state *st) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - -#ifdef __FreeBSD__ - PF_LOCK_ASSERT(); -#else - splassert(IPL_SOFTNET); -#endif - - if (ISSET(st->rule.ptr->rule_flag, PFRULE_NOSYNC) || - st->key[PF_SK_WIRE]->proto == IPPROTO_PFSYNC) { - SET(st->state_flags, PFSTATE_NOSYNC); - return; - } - - if (sc == NULL || ISSET(st->state_flags, PFSTATE_NOSYNC)) - return; - -#ifdef PFSYNC_DEBUG -#ifdef __FreeBSD__ - KASSERT(st->sync_state == PFSYNC_S_NONE, - ("%s: st->sync_state == PFSYNC_S_NONE", __FUNCTION__)); -#else - KASSERT(st->sync_state == PFSYNC_S_NONE); -#endif -#endif - - if (sc->sc_len == PFSYNC_MINPKT) -#ifdef __FreeBSD__ - callout_reset(&sc->sc_tmo, 1 * hz, pfsync_timeout, - V_pfsyncif); -#else - timeout_add_sec(&sc->sc_tmo, 1); -#endif - - pfsync_q_ins(st, PFSYNC_S_INS); - - if (ISSET(st->state_flags, PFSTATE_ACK)) - schednetisr(NETISR_PFSYNC); - else - st->sync_updates = 0; -} - -int defer = 10; - -int -pfsync_defer(struct pf_state *st, struct mbuf *m) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - struct pfsync_deferral *pd; - -#ifdef __FreeBSD__ - PF_LOCK_ASSERT(); -#else - splassert(IPL_SOFTNET); -#endif - - if (sc->sc_deferred >= 128) - pfsync_undefer(TAILQ_FIRST(&sc->sc_deferrals), 0); - - pd = pool_get(&sc->sc_pool, M_NOWAIT); - if (pd == NULL) - return (0); - sc->sc_deferred++; - -#ifdef __FreeBSD__ - m->m_flags |= M_SKIP_FIREWALL; -#else - m->m_pkthdr.pf.flags |= PF_TAG_GENERATED; -#endif - SET(st->state_flags, PFSTATE_ACK); - - pd->pd_st = st; - pd->pd_m = m; - - TAILQ_INSERT_TAIL(&sc->sc_deferrals, pd, pd_entry); -#ifdef __FreeBSD__ - callout_init(&pd->pd_tmo, CALLOUT_MPSAFE); - callout_reset(&pd->pd_tmo, defer, pfsync_defer_tmo, - pd); -#else - timeout_set(&pd->pd_tmo, pfsync_defer_tmo, pd); - timeout_add(&pd->pd_tmo, defer); -#endif - - return (1); -} - -void -pfsync_undefer(struct pfsync_deferral *pd, int drop) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - int s; - -#ifdef __FreeBSD__ - PF_LOCK_ASSERT(); -#else - splassert(IPL_SOFTNET); -#endif - - TAILQ_REMOVE(&sc->sc_deferrals, pd, pd_entry); - sc->sc_deferred--; - - CLR(pd->pd_st->state_flags, PFSTATE_ACK); - timeout_del(&pd->pd_tmo); /* bah */ - if (drop) - m_freem(pd->pd_m); - else { - s = splnet(); -#ifdef __FreeBSD__ - /* XXX: use pf_defered?! */ - PF_UNLOCK(); -#endif - ip_output(pd->pd_m, (void *)NULL, (void *)NULL, 0, - (void *)NULL, (void *)NULL); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - splx(s); - } - - pool_put(&sc->sc_pool, pd); -} - -void -pfsync_defer_tmo(void *arg) -{ -#if defined(__FreeBSD__) && defined(VIMAGE) - struct pfsync_deferral *pd = arg; -#endif - int s; - - s = splsoftnet(); -#ifdef __FreeBSD__ - CURVNET_SET(pd->pd_m->m_pkthdr.rcvif->if_vnet); /* XXX */ - PF_LOCK(); -#endif - pfsync_undefer(arg, 0); -#ifdef __FreeBSD__ - PF_UNLOCK(); - CURVNET_RESTORE(); -#endif - splx(s); -} - -void -pfsync_deferred(struct pf_state *st, int drop) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - struct pfsync_deferral *pd; - - TAILQ_FOREACH(pd, &sc->sc_deferrals, pd_entry) { - if (pd->pd_st == st) { - pfsync_undefer(pd, drop); - return; - } - } - - panic("pfsync_send_deferred: unable to find deferred state"); -} - -u_int pfsync_upds = 0; - -void -pfsync_update_state(struct pf_state *st) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - int sync = 0; - -#ifdef __FreeBSD__ - PF_LOCK_ASSERT(); -#else - splassert(IPL_SOFTNET); -#endif - - if (sc == NULL) - return; - - if (ISSET(st->state_flags, PFSTATE_ACK)) - pfsync_deferred(st, 0); - if (ISSET(st->state_flags, PFSTATE_NOSYNC)) { - if (st->sync_state != PFSYNC_S_NONE) - pfsync_q_del(st); - return; - } - - if (sc->sc_len == PFSYNC_MINPKT) -#ifdef __FreeBSD__ - callout_reset(&sc->sc_tmo, 1 * hz, pfsync_timeout, - V_pfsyncif); -#else - timeout_add_sec(&sc->sc_tmo, 1); -#endif - - switch (st->sync_state) { - case PFSYNC_S_UPD_C: - case PFSYNC_S_UPD: - case PFSYNC_S_INS: - /* we're already handling it */ - - if (st->key[PF_SK_WIRE]->proto == IPPROTO_TCP) { - st->sync_updates++; - if (st->sync_updates >= sc->sc_maxupdates) - sync = 1; - } - break; - - case PFSYNC_S_IACK: - pfsync_q_del(st); - case PFSYNC_S_NONE: - pfsync_q_ins(st, PFSYNC_S_UPD_C); - st->sync_updates = 0; - break; - - default: - panic("pfsync_update_state: unexpected sync state %d", - st->sync_state); - } - - if (sync || (time_uptime - st->pfsync_time) < 2) { - pfsync_upds++; - schednetisr(NETISR_PFSYNC); - } -} - -void -pfsync_request_update(u_int32_t creatorid, u_int64_t id) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - struct pfsync_upd_req_item *item; - size_t nlen = sizeof(struct pfsync_upd_req); - int s; - - PF_LOCK_ASSERT(); - - /* - * this code does nothing to prevent multiple update requests for the - * same state being generated. - */ - - item = pool_get(&sc->sc_pool, PR_NOWAIT); - if (item == NULL) { - /* XXX stats */ - return; - } - - item->ur_msg.id = id; - item->ur_msg.creatorid = creatorid; - - if (TAILQ_EMPTY(&sc->sc_upd_req_list)) - nlen += sizeof(struct pfsync_subheader); - -#ifdef __FreeBSD__ - if (sc->sc_len + nlen > sc->sc_ifp->if_mtu) { -#else - if (sc->sc_len + nlen > sc->sc_if.if_mtu) { -#endif - s = splnet(); - pfsync_sendout(); - splx(s); - - nlen = sizeof(struct pfsync_subheader) + - sizeof(struct pfsync_upd_req); - } - - TAILQ_INSERT_TAIL(&sc->sc_upd_req_list, item, ur_entry); - sc->sc_len += nlen; - - schednetisr(NETISR_PFSYNC); -} - -void -pfsync_update_state_req(struct pf_state *st) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - - PF_LOCK_ASSERT(); - - if (sc == NULL) - panic("pfsync_update_state_req: nonexistant instance"); - - if (ISSET(st->state_flags, PFSTATE_NOSYNC)) { - if (st->sync_state != PFSYNC_S_NONE) - pfsync_q_del(st); - return; - } - - switch (st->sync_state) { - case PFSYNC_S_UPD_C: - case PFSYNC_S_IACK: - pfsync_q_del(st); - case PFSYNC_S_NONE: - pfsync_q_ins(st, PFSYNC_S_UPD); - schednetisr(NETISR_PFSYNC); - return; - - case PFSYNC_S_INS: - case PFSYNC_S_UPD: - case PFSYNC_S_DEL: - /* we're already handling it */ - return; - - default: - panic("pfsync_update_state_req: unexpected sync state %d", - st->sync_state); - } -} - -void -pfsync_delete_state(struct pf_state *st) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - -#ifdef __FreeBSD__ - PF_LOCK_ASSERT(); -#else - splassert(IPL_SOFTNET); -#endif - - if (sc == NULL) - return; - - if (ISSET(st->state_flags, PFSTATE_ACK)) - pfsync_deferred(st, 1); - if (ISSET(st->state_flags, PFSTATE_NOSYNC)) { - if (st->sync_state != PFSYNC_S_NONE) - pfsync_q_del(st); - return; - } - - if (sc->sc_len == PFSYNC_MINPKT) -#ifdef __FreeBSD__ - callout_reset(&sc->sc_tmo, 1 * hz, pfsync_timeout, - V_pfsyncif); -#else - timeout_add_sec(&sc->sc_tmo, 1); -#endif - - switch (st->sync_state) { - case PFSYNC_S_INS: - /* we never got to tell the world so just forget about it */ - pfsync_q_del(st); - return; - - case PFSYNC_S_UPD_C: - case PFSYNC_S_UPD: - case PFSYNC_S_IACK: - pfsync_q_del(st); - /* FALLTHROUGH to putting it on the del list */ - - case PFSYNC_S_NONE: - pfsync_q_ins(st, PFSYNC_S_DEL); - return; - - default: - panic("pfsync_delete_state: unexpected sync state %d", - st->sync_state); - } -} - -void -pfsync_clear_states(u_int32_t creatorid, const char *ifname) -{ - struct { - struct pfsync_subheader subh; - struct pfsync_clr clr; - } __packed r; - -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - -#ifdef __FreeBSD__ - PF_LOCK_ASSERT(); -#else - splassert(IPL_SOFTNET); -#endif - - if (sc == NULL) - return; - - bzero(&r, sizeof(r)); - - r.subh.action = PFSYNC_ACT_CLR; - r.subh.count = htons(1); - - strlcpy(r.clr.ifname, ifname, sizeof(r.clr.ifname)); - r.clr.creatorid = creatorid; - - pfsync_send_plus(&r, sizeof(r)); -} - -void -pfsync_q_ins(struct pf_state *st, int q) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - size_t nlen = pfsync_qs[q].len; - int s; - - PF_LOCK_ASSERT(); - -#ifdef __FreeBSD__ - KASSERT(st->sync_state == PFSYNC_S_NONE, - ("%s: st->sync_state == PFSYNC_S_NONE", __FUNCTION__)); -#else - KASSERT(st->sync_state == PFSYNC_S_NONE); -#endif - -#if 1 || defined(PFSYNC_DEBUG) - if (sc->sc_len < PFSYNC_MINPKT) -#ifdef __FreeBSD__ - panic("pfsync pkt len is too low %zu", sc->sc_len); -#else - panic("pfsync pkt len is too low %d", sc->sc_len); -#endif -#endif - if (TAILQ_EMPTY(&sc->sc_qs[q])) - nlen += sizeof(struct pfsync_subheader); - -#ifdef __FreeBSD__ - if (sc->sc_len + nlen > sc->sc_ifp->if_mtu) { -#else - if (sc->sc_len + nlen > sc->sc_if.if_mtu) { -#endif - s = splnet(); - pfsync_sendout(); - splx(s); - - nlen = sizeof(struct pfsync_subheader) + pfsync_qs[q].len; - } - - sc->sc_len += nlen; - TAILQ_INSERT_TAIL(&sc->sc_qs[q], st, sync_list); - st->sync_state = q; -} - -void -pfsync_q_del(struct pf_state *st) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - int q = st->sync_state; - -#ifdef __FreeBSD__ - KASSERT(st->sync_state != PFSYNC_S_NONE, - ("%s: st->sync_state != PFSYNC_S_NONE", __FUNCTION__)); -#else - KASSERT(st->sync_state != PFSYNC_S_NONE); -#endif - - sc->sc_len -= pfsync_qs[q].len; - TAILQ_REMOVE(&sc->sc_qs[q], st, sync_list); - st->sync_state = PFSYNC_S_NONE; - - if (TAILQ_EMPTY(&sc->sc_qs[q])) - sc->sc_len -= sizeof(struct pfsync_subheader); -} - -#ifdef notyet -void -pfsync_update_tdb(struct tdb *t, int output) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - size_t nlen = sizeof(struct pfsync_tdb); - int s; - - if (sc == NULL) - return; - - if (!ISSET(t->tdb_flags, TDBF_PFSYNC)) { - if (TAILQ_EMPTY(&sc->sc_tdb_q)) - nlen += sizeof(struct pfsync_subheader); - - if (sc->sc_len + nlen > sc->sc_if.if_mtu) { - s = splnet(); - PF_LOCK(); - pfsync_sendout(); - PF_UNLOCK(); - splx(s); - - nlen = sizeof(struct pfsync_subheader) + - sizeof(struct pfsync_tdb); - } - - sc->sc_len += nlen; - TAILQ_INSERT_TAIL(&sc->sc_tdb_q, t, tdb_sync_entry); - SET(t->tdb_flags, TDBF_PFSYNC); - t->tdb_updates = 0; - } else { - if (++t->tdb_updates >= sc->sc_maxupdates) - schednetisr(NETISR_PFSYNC); - } - - if (output) - SET(t->tdb_flags, TDBF_PFSYNC_RPL); - else - CLR(t->tdb_flags, TDBF_PFSYNC_RPL); -} - -void -pfsync_delete_tdb(struct tdb *t) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - - if (sc == NULL || !ISSET(t->tdb_flags, TDBF_PFSYNC)) - return; - - sc->sc_len -= sizeof(struct pfsync_tdb); - TAILQ_REMOVE(&sc->sc_tdb_q, t, tdb_sync_entry); - CLR(t->tdb_flags, TDBF_PFSYNC); - - if (TAILQ_EMPTY(&sc->sc_tdb_q)) - sc->sc_len -= sizeof(struct pfsync_subheader); -} - -int -pfsync_out_tdb(struct tdb *t, struct mbuf *m, int offset) -{ - struct pfsync_tdb *ut = (struct pfsync_tdb *)(m->m_data + offset); - - bzero(ut, sizeof(*ut)); - ut->spi = t->tdb_spi; - bcopy(&t->tdb_dst, &ut->dst, sizeof(ut->dst)); - /* - * When a failover happens, the master's rpl is probably above - * what we see here (we may be up to a second late), so - * increase it a bit for outbound tdbs to manage most such - * situations. - * - * For now, just add an offset that is likely to be larger - * than the number of packets we can see in one second. The RFC - * just says the next packet must have a higher seq value. - * - * XXX What is a good algorithm for this? We could use - * a rate-determined increase, but to know it, we would have - * to extend struct tdb. - * XXX pt->rpl can wrap over MAXINT, but if so the real tdb - * will soon be replaced anyway. For now, just don't handle - * this edge case. - */ -#define RPL_INCR 16384 - ut->rpl = htonl(t->tdb_rpl + (ISSET(t->tdb_flags, TDBF_PFSYNC_RPL) ? - RPL_INCR : 0)); - ut->cur_bytes = htobe64(t->tdb_cur_bytes); - ut->sproto = t->tdb_sproto; - - return (sizeof(*ut)); -} -#endif - -void -pfsync_bulk_start(void) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) -#else - if (pf_status.debug >= PF_DEBUG_MISC) -#endif - printf("pfsync: received bulk update request\n"); - -#ifdef __FreeBSD__ - PF_LOCK_ASSERT(); - if (TAILQ_EMPTY(&V_state_list)) -#else - if (TAILQ_EMPTY(&state_list)) -#endif - pfsync_bulk_status(PFSYNC_BUS_END); - else { - sc->sc_ureq_received = time_uptime; - if (sc->sc_bulk_next == NULL) -#ifdef __FreeBSD__ - sc->sc_bulk_next = TAILQ_FIRST(&V_state_list); -#else - sc->sc_bulk_next = TAILQ_FIRST(&state_list); -#endif - sc->sc_bulk_last = sc->sc_bulk_next; - - pfsync_bulk_status(PFSYNC_BUS_START); - callout_reset(&sc->sc_bulk_tmo, 1, pfsync_bulk_update, sc); - } -} - -void -pfsync_bulk_update(void *arg) -{ - struct pfsync_softc *sc = arg; - struct pf_state *st = sc->sc_bulk_next; - int i = 0; - int s; - - PF_LOCK_ASSERT(); - - s = splsoftnet(); -#ifdef __FreeBSD__ - CURVNET_SET(sc->sc_ifp->if_vnet); -#endif - for (;;) { - if (st->sync_state == PFSYNC_S_NONE && - st->timeout < PFTM_MAX && - st->pfsync_time <= sc->sc_ureq_received) { - pfsync_update_state_req(st); - i++; - } - - st = TAILQ_NEXT(st, entry_list); - if (st == NULL) -#ifdef __FreeBSD__ - st = TAILQ_FIRST(&V_state_list); -#else - st = TAILQ_FIRST(&state_list); -#endif - - if (st == sc->sc_bulk_last) { - /* we're done */ - sc->sc_bulk_next = NULL; - sc->sc_bulk_last = NULL; - pfsync_bulk_status(PFSYNC_BUS_END); - break; - } - -#ifdef __FreeBSD__ - if (i > 1 && (sc->sc_ifp->if_mtu - sc->sc_len) < -#else - if (i > 1 && (sc->sc_if.if_mtu - sc->sc_len) < -#endif - sizeof(struct pfsync_state)) { - /* we've filled a packet */ - sc->sc_bulk_next = st; -#ifdef __FreeBSD__ - callout_reset(&sc->sc_bulk_tmo, 1, - pfsync_bulk_update, sc); -#else - timeout_add(&sc->sc_bulk_tmo, 1); -#endif - break; - } - } - -#ifdef __FreeBSD__ - CURVNET_RESTORE(); -#endif - splx(s); -} - -void -pfsync_bulk_status(u_int8_t status) -{ - struct { - struct pfsync_subheader subh; - struct pfsync_bus bus; - } __packed r; - -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - - PF_LOCK_ASSERT(); - - bzero(&r, sizeof(r)); - - r.subh.action = PFSYNC_ACT_BUS; - r.subh.count = htons(1); - -#ifdef __FreeBSD__ - r.bus.creatorid = V_pf_status.hostid; -#else - r.bus.creatorid = pf_status.hostid; -#endif - r.bus.endtime = htonl(time_uptime - sc->sc_ureq_received); - r.bus.status = status; - - pfsync_send_plus(&r, sizeof(r)); -} - -void -pfsync_bulk_fail(void *arg) -{ - struct pfsync_softc *sc = arg; - -#ifdef __FreeBSD__ - CURVNET_SET(sc->sc_ifp->if_vnet); -#endif - - if (sc->sc_bulk_tries++ < PFSYNC_MAX_BULKTRIES) { - /* Try again */ -#ifdef __FreeBSD__ - callout_reset(&sc->sc_bulkfail_tmo, 5 * hz, - pfsync_bulk_fail, V_pfsyncif); -#else - timeout_add_sec(&sc->sc_bulkfail_tmo, 5); -#endif - PF_LOCK(); - pfsync_request_update(0, 0); - PF_UNLOCK(); - } else { - /* Pretend like the transfer was ok */ - sc->sc_ureq_sent = 0; - sc->sc_bulk_tries = 0; -#if NCARP > 0 -#ifdef notyet -#ifdef __FreeBSD__ - if (!sc->pfsync_sync_ok) -#else - if (!pfsync_sync_ok) -#endif - carp_group_demote_adj(&sc->sc_if, -1); -#endif -#endif -#ifdef __FreeBSD__ - sc->pfsync_sync_ok = 1; -#else - pfsync_sync_ok = 1; -#endif -#ifdef __FreeBSD__ - if (V_pf_status.debug >= PF_DEBUG_MISC) -#else - if (pf_status.debug >= PF_DEBUG_MISC) -#endif - printf("pfsync: failed to receive bulk update\n"); - } - -#ifdef __FreeBSD__ - CURVNET_RESTORE(); -#endif -} - -void -pfsync_send_plus(void *plus, size_t pluslen) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - int s; - - PF_LOCK_ASSERT(); - -#ifdef __FreeBSD__ - if (sc->sc_len + pluslen > sc->sc_ifp->if_mtu) { -#else - if (sc->sc_len + pluslen > sc->sc_if.if_mtu) { -#endif - s = splnet(); - pfsync_sendout(); - splx(s); - } - - sc->sc_plus = plus; - sc->sc_len += (sc->sc_pluslen = pluslen); - - s = splnet(); - pfsync_sendout(); - splx(s); -} - -int -pfsync_up(void) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - -#ifdef __FreeBSD__ - if (sc == NULL || !ISSET(sc->sc_ifp->if_flags, IFF_DRV_RUNNING)) -#else - if (sc == NULL || !ISSET(sc->sc_if.if_flags, IFF_RUNNING)) -#endif - return (0); - - return (1); -} - -int -pfsync_state_in_use(struct pf_state *st) -{ -#ifdef __FreeBSD__ - struct pfsync_softc *sc = V_pfsyncif; -#else - struct pfsync_softc *sc = pfsyncif; -#endif - - if (sc == NULL) - return (0); - - if (st->sync_state != PFSYNC_S_NONE || - st == sc->sc_bulk_next || - st == sc->sc_bulk_last) - return (1); - - return (0); -} - -u_int pfsync_ints; -u_int pfsync_tmos; - -void -pfsync_timeout(void *arg) -{ -#if defined(__FreeBSD__) && defined(VIMAGE) - struct pfsync_softc *sc = arg; -#endif - int s; - -#ifdef __FreeBSD__ - CURVNET_SET(sc->sc_ifp->if_vnet); -#endif - - pfsync_tmos++; - - s = splnet(); -#ifdef __FreeBSD__ - PF_LOCK(); -#endif - pfsync_sendout(); -#ifdef __FreeBSD__ - PF_UNLOCK(); -#endif - splx(s); - -#ifdef __FreeBSD__ - CURVNET_RESTORE(); -#endif -} - -/* this is a softnet/netisr handler */ -void -#ifdef __FreeBSD__ -pfsyncintr(void *arg) -{ - struct pfsync_softc *sc = arg; - struct mbuf *m, *n; - - CURVNET_SET(sc->sc_ifp->if_vnet); - pfsync_ints++; - - PF_LOCK(); - if (sc->sc_len > PFSYNC_MINPKT) - pfsync_sendout1(0); - _IF_DEQUEUE_ALL(&sc->sc_ifp->if_snd, m); - PF_UNLOCK(); - - for (; m != NULL; m = n) { - - n = m->m_nextpkt; - m->m_nextpkt = NULL; - if (ip_output(m, NULL, NULL, IP_RAWOUTPUT, &sc->sc_imo, NULL) - == 0) - V_pfsyncstats.pfsyncs_opackets++; - else - V_pfsyncstats.pfsyncs_oerrors++; - } - CURVNET_RESTORE(); -} -#else -pfsyncintr(void) -{ - int s; - - pfsync_ints++; - - s = splnet(); - pfsync_sendout(); - splx(s); -} -#endif - -int -pfsync_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp, - size_t newlen) -{ - -#ifdef notyet - /* All sysctl names at this level are terminal. */ - if (namelen != 1) - return (ENOTDIR); - - switch (name[0]) { - case PFSYNCCTL_STATS: - if (newp != NULL) - return (EPERM); - return (sysctl_struct(oldp, oldlenp, newp, newlen, - &V_pfsyncstats, sizeof(V_pfsyncstats))); - } -#endif - return (ENOPROTOOPT); -} - -#ifdef __FreeBSD__ -static int -pfsync_multicast_setup(struct pfsync_softc *sc) -{ - struct ip_moptions *imo = &sc->sc_imo; - int error; - - if (!(sc->sc_sync_if->if_flags & IFF_MULTICAST)) { - sc->sc_sync_if = NULL; - return (EADDRNOTAVAIL); - } - - imo->imo_membership = (struct in_multi **)malloc( - (sizeof(struct in_multi *) * IP_MIN_MEMBERSHIPS), M_PFSYNC, - M_WAITOK | M_ZERO); - imo->imo_max_memberships = IP_MIN_MEMBERSHIPS; - imo->imo_multicast_vif = -1; - - if ((error = in_joingroup(sc->sc_sync_if, &sc->sc_sync_peer, NULL, - &imo->imo_membership[0])) != 0) { - free(imo->imo_membership, M_PFSYNC); - return (error); - } - imo->imo_num_memberships++; - imo->imo_multicast_ifp = sc->sc_sync_if; - imo->imo_multicast_ttl = PFSYNC_DFLTTL; - imo->imo_multicast_loop = 0; - - return (0); -} - -static void -pfsync_multicast_cleanup(struct pfsync_softc *sc) -{ - struct ip_moptions *imo = &sc->sc_imo; - - in_leavegroup(imo->imo_membership[0], NULL); - free(imo->imo_membership, M_PFSYNC); - imo->imo_membership = NULL; - imo->imo_multicast_ifp = NULL; -} - -#ifdef INET -extern struct domain inetdomain; -static struct protosw in_pfsync_protosw = { - .pr_type = SOCK_RAW, - .pr_domain = &inetdomain, - .pr_protocol = IPPROTO_PFSYNC, - .pr_flags = PR_ATOMIC|PR_ADDR, - .pr_input = pfsync_input, - .pr_output = (pr_output_t *)rip_output, - .pr_ctloutput = rip_ctloutput, - .pr_usrreqs = &rip_usrreqs -}; -#endif - -static int -pfsync_init() -{ - VNET_ITERATOR_DECL(vnet_iter); - int error = 0; - - VNET_LIST_RLOCK(); - VNET_FOREACH(vnet_iter) { - CURVNET_SET(vnet_iter); - V_pfsync_cloner = pfsync_cloner; - V_pfsync_cloner_data = pfsync_cloner_data; - V_pfsync_cloner.ifc_data = &V_pfsync_cloner_data; - if_clone_attach(&V_pfsync_cloner); - error = swi_add(NULL, "pfsync", pfsyncintr, V_pfsyncif, - SWI_NET, INTR_MPSAFE, &V_pfsync_swi_cookie); - CURVNET_RESTORE(); - if (error) - goto fail_locked; - } - VNET_LIST_RUNLOCK(); -#ifdef INET - error = pf_proto_register(PF_INET, &in_pfsync_protosw); - if (error) - goto fail; - error = ipproto_register(IPPROTO_PFSYNC); - if (error) { - pf_proto_unregister(PF_INET, IPPROTO_PFSYNC, SOCK_RAW); - goto fail; - } -#endif - PF_LOCK(); - pfsync_state_import_ptr = pfsync_state_import; - pfsync_up_ptr = pfsync_up; - pfsync_insert_state_ptr = pfsync_insert_state; - pfsync_update_state_ptr = pfsync_update_state; - pfsync_delete_state_ptr = pfsync_delete_state; - pfsync_clear_states_ptr = pfsync_clear_states; - pfsync_state_in_use_ptr = pfsync_state_in_use; - pfsync_defer_ptr = pfsync_defer; - PF_UNLOCK(); - - return (0); - -fail: - VNET_LIST_RLOCK(); -fail_locked: - VNET_FOREACH(vnet_iter) { - CURVNET_SET(vnet_iter); - if (V_pfsync_swi_cookie) { - swi_remove(V_pfsync_swi_cookie); - if_clone_detach(&V_pfsync_cloner); - } - CURVNET_RESTORE(); - } - VNET_LIST_RUNLOCK(); - - return (error); -} - -static void -pfsync_uninit() -{ - VNET_ITERATOR_DECL(vnet_iter); - - PF_LOCK(); - pfsync_state_import_ptr = NULL; - pfsync_up_ptr = NULL; - pfsync_insert_state_ptr = NULL; - pfsync_update_state_ptr = NULL; - pfsync_delete_state_ptr = NULL; - pfsync_clear_states_ptr = NULL; - pfsync_state_in_use_ptr = NULL; - pfsync_defer_ptr = NULL; - PF_UNLOCK(); - - ipproto_unregister(IPPROTO_PFSYNC); - pf_proto_unregister(PF_INET, IPPROTO_PFSYNC, SOCK_RAW); - VNET_LIST_RLOCK(); - VNET_FOREACH(vnet_iter) { - CURVNET_SET(vnet_iter); - swi_remove(V_pfsync_swi_cookie); - if_clone_detach(&V_pfsync_cloner); - CURVNET_RESTORE(); - } - VNET_LIST_RUNLOCK(); -} - -static int -pfsync_modevent(module_t mod, int type, void *data) -{ - int error = 0; - - switch (type) { - case MOD_LOAD: - error = pfsync_init(); - break; - case MOD_QUIESCE: - /* - * Module should not be unloaded due to race conditions. - */ - error = EPERM; - break; - case MOD_UNLOAD: - pfsync_uninit(); - break; - default: - error = EINVAL; - break; - } - - return (error); -} - -static moduledata_t pfsync_mod = { - "pfsync", - pfsync_modevent, - 0 -}; - -#define PFSYNC_MODVER 1 - -DECLARE_MODULE(pfsync, pfsync_mod, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY); -MODULE_VERSION(pfsync, PFSYNC_MODVER); -MODULE_DEPEND(pfsync, pf, PF_MODVER, PF_MODVER, PF_MODVER); -#endif /* __FreeBSD__ */ |