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-rw-r--r--sys/netinet/if_ether.c31
-rw-r--r--sys/netinet/in.c11
-rw-r--r--sys/netinet/in_var.h2
-rw-r--r--sys/netinet/ip_carp.c107
-rw-r--r--sys/netinet/ip_divert.c15
-rw-r--r--sys/netinet/ip_fastfwd.c129
-rw-r--r--sys/netinet/ip_fw.h22
-rw-r--r--sys/netinet/ip_input.c32
-rw-r--r--sys/netinet/ip_ipsec.c151
-rw-r--r--sys/netinet/ip_ipsec.h4
-rw-r--r--sys/netinet/ip_output.c38
-rw-r--r--sys/netinet/sctp_input.c2
-rw-r--r--sys/netinet/tcp_input.c2
-rw-r--r--sys/netinet/udp_usrreq.c4
14 files changed, 197 insertions, 353 deletions
diff --git a/sys/netinet/if_ether.c b/sys/netinet/if_ether.c
index 78d2f43..3a9d262 100644
--- a/sys/netinet/if_ether.c
+++ b/sys/netinet/if_ether.c
@@ -80,6 +80,8 @@ SYSCTL_DECL(_net_link_ether);
static SYSCTL_NODE(_net_link_ether, PF_INET, inet, CTLFLAG_RW, 0, "");
static SYSCTL_NODE(_net_link_ether, PF_ARP, arp, CTLFLAG_RW, 0, "");
+static VNET_DEFINE(int, arp_carp_mac) = 0; /* default to disabled */
+
/* timer values */
static VNET_DEFINE(int, arpt_keep) = (20*60); /* once resolved, good for 20
* minutes */
@@ -98,12 +100,16 @@ VNET_PCPUSTAT_SYSUNINIT(arpstat);
static VNET_DEFINE(int, arp_maxhold) = 1;
+#define V_arp_carp_mac VNET(arp_carp_mac)
#define V_arpt_keep VNET(arpt_keep)
#define V_arpt_down VNET(arpt_down)
#define V_arp_maxtries VNET(arp_maxtries)
#define V_arp_proxyall VNET(arp_proxyall)
#define V_arp_maxhold VNET(arp_maxhold)
+SYSCTL_VNET_INT(_net_link_ether_inet, OID_AUTO, carp_mac, CTLFLAG_RW,
+ &VNET_NAME(arp_carp_mac), 0,
+ "Send CARP mac with replies to CARP ips");
SYSCTL_VNET_INT(_net_link_ether_inet, OID_AUTO, max_age, CTLFLAG_RW,
&VNET_NAME(arpt_keep), 0,
"ARP entry lifetime in seconds");
@@ -909,6 +915,29 @@ reply:
/* default behaviour; never reply by broadcast. */
m->m_flags &= ~(M_BCAST|M_MCAST);
}
+#ifdef DEV_CARP
+ if (V_arp_carp_mac && carp_match) {
+ struct ether_header *eh = (struct ether_header *) sa.sa_data;
+ short type = htons(ETHERTYPE_ARP);
+
+ ah->ar_hrd = htons(ARPHRD_ETHER);
+
+ (void)memcpy(&eh->ether_type, &type,
+ sizeof(eh->ether_type));
+ (void)memcpy(eh->ether_dhost, ar_tha(ah),
+ sizeof (eh->ether_dhost));
+ (void)memcpy(eh->ether_shost, enaddr,
+ sizeof(eh->ether_shost));
+
+ sa.sa_family = pseudo_AF_HDRCMPLT;
+ sa.sa_len = sizeof(sa);
+ } else {
+#endif
+ sa.sa_family = AF_ARP;
+ sa.sa_len = 2;
+#ifdef DEV_CARP
+ }
+#endif
(void)memcpy(ar_tpa(ah), ar_spa(ah), ah->ar_pln);
(void)memcpy(ar_spa(ah), &itaddr, ah->ar_pln);
ah->ar_op = htons(ARPOP_REPLY);
@@ -916,8 +945,6 @@ reply:
m->m_len = sizeof(*ah) + (2 * ah->ar_pln) + (2 * ah->ar_hln);
m->m_pkthdr.len = m->m_len;
m->m_pkthdr.rcvif = NULL;
- sa.sa_family = AF_ARP;
- sa.sa_len = 2;
m_clrprotoflags(m); /* Avoid confusing lower layers. */
(*ifp->if_output)(ifp, m, &sa, NULL);
ARPSTAT_INC(txreplies);
diff --git a/sys/netinet/in.c b/sys/netinet/in.c
index b61b4b6..fde54be 100644
--- a/sys/netinet/in.c
+++ b/sys/netinet/in.c
@@ -315,6 +315,7 @@ in_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp,
* Security checks before we get involved in any work.
*/
switch (cmd) {
+ case SIOCORDERIFADDR:
case SIOCAIFADDR:
if (td != NULL) {
error = priv_check(td, PRIV_NET_ADDIFADDR);
@@ -374,6 +375,7 @@ in_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp,
error = 0;
switch (cmd) {
+ case SIOCORDERIFADDR:
case SIOCAIFADDR:
case SIOCDIFADDR:
if (ifra->ifra_addr.sin_family == AF_INET) {
@@ -399,10 +401,17 @@ in_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp,
goto out;
}
}
- if (cmd == SIOCDIFADDR && ia == NULL) {
+ if ((cmd == SIOCDIFADDR || cmd == SIOCORDERIFADDR) && ia == NULL) {
error = EADDRNOTAVAIL;
goto out;
}
+ if (cmd == SIOCORDERIFADDR && ia != NULL) {
+ IF_ADDR_WLOCK(ifp);
+ TAILQ_REMOVE(&ifp->if_addrhead, &ia->ia_ifa, ifa_link);
+ TAILQ_INSERT_AFTER(&ifp->if_addrhead, TAILQ_FIRST(&ifp->if_addrhead), &ia->ia_ifa, ifa_link);
+ IF_ADDR_WUNLOCK(ifp);
+ goto out;
+ }
if (ia == NULL) {
ia = (struct in_ifaddr *)
malloc(sizeof *ia, M_IFADDR, M_NOWAIT |
diff --git a/sys/netinet/in_var.h b/sys/netinet/in_var.h
index 8657dbb..511ba26 100644
--- a/sys/netinet/in_var.h
+++ b/sys/netinet/in_var.h
@@ -452,7 +452,7 @@ int in_scrubprefix(struct in_ifaddr *, u_int);
void ip_input(struct mbuf *);
int in_ifadown(struct ifaddr *ifa, int);
void in_ifscrub(struct ifnet *, struct in_ifaddr *, u_int);
-struct mbuf *ip_fastforward(struct mbuf *);
+struct mbuf *ip_tryforward(struct mbuf *);
void *in_domifattach(struct ifnet *);
void in_domifdetach(struct ifnet *, void *);
diff --git a/sys/netinet/ip_carp.c b/sys/netinet/ip_carp.c
index c5fea16..f85a322 100644
--- a/sys/netinet/ip_carp.c
+++ b/sys/netinet/ip_carp.c
@@ -115,7 +115,6 @@ struct carp_softc {
int sc_sendad_success;
#define CARP_SENDAD_MIN_SUCCESS 3
- int sc_init_counter;
uint64_t sc_counter;
/* authentication */
@@ -143,7 +142,7 @@ struct carp_if {
struct ip6_moptions cif_im6o;
#endif
struct ifnet *cif_ifp;
- struct mtx cif_mtx;
+ struct rwlock cif_mtx;
};
#define CARP_INET 0
@@ -247,18 +246,19 @@ SYSCTL_VNET_PCPUSTAT(_net_inet_carp, OID_AUTO, stats, struct carpstats,
#define CARP_LOCK_ASSERT(sc) mtx_assert(&(sc)->sc_mtx, MA_OWNED)
#define CARP_LOCK(sc) mtx_lock(&(sc)->sc_mtx)
#define CARP_UNLOCK(sc) mtx_unlock(&(sc)->sc_mtx)
-#define CIF_LOCK_INIT(cif) mtx_init(&(cif)->cif_mtx, "carp_if", \
- NULL, MTX_DEF)
-#define CIF_LOCK_DESTROY(cif) mtx_destroy(&(cif)->cif_mtx)
-#define CIF_LOCK_ASSERT(cif) mtx_assert(&(cif)->cif_mtx, MA_OWNED)
-#define CIF_LOCK(cif) mtx_lock(&(cif)->cif_mtx)
-#define CIF_UNLOCK(cif) mtx_unlock(&(cif)->cif_mtx)
+#define CIF_LOCK_INIT(cif) rw_init(&(cif)->cif_mtx, "carp_if")
+#define CIF_LOCK_DESTROY(cif) rw_destroy(&(cif)->cif_mtx)
+#define CIF_LOCK_ASSERT(cif) rw_assert(&(cif)->cif_mtx, MA_OWNED)
+#define CIF_RLOCK(cif) rw_rlock(&(cif)->cif_mtx)
+#define CIF_RUNLOCK(cif) rw_runlock(&(cif)->cif_mtx)
+#define CIF_WLOCK(cif) rw_wlock(&(cif)->cif_mtx)
+#define CIF_WUNLOCK(cif) rw_wunlock(&(cif)->cif_mtx)
#define CIF_FREE(cif) do { \
CIF_LOCK_ASSERT(cif); \
if (TAILQ_EMPTY(&(cif)->cif_vrs)) \
carp_free_if(cif); \
else \
- CIF_UNLOCK(cif); \
+ CIF_WUNLOCK(cif); \
} while (0)
#define CARP_LOG(...) do { \
@@ -579,7 +579,6 @@ carp_input_c(struct mbuf *m, struct carp_header *ch, sa_family_t af)
struct ifnet *ifp = m->m_pkthdr.rcvif;
struct ifaddr *ifa;
struct carp_softc *sc;
- uint64_t tmp_counter;
struct timeval sc_tv, ch_tv;
/* verify that the VHID is valid on the receiving interface */
@@ -619,14 +618,20 @@ carp_input_c(struct mbuf *m, struct carp_header *ch, sa_family_t af)
goto out;
}
- tmp_counter = ntohl(ch->carp_counter[0]);
- tmp_counter = tmp_counter<<32;
- tmp_counter += ntohl(ch->carp_counter[1]);
-
- /* XXX Replay protection goes here */
-
- sc->sc_init_counter = 0;
- sc->sc_counter = tmp_counter;
+ if (!bcmp(&sc->sc_counter, ch->carp_counter,
+ sizeof(ch->carp_counter))) {
+ /* Do not log duplicates from non simplex interfaces */
+ if (sc->sc_carpdev->if_flags & IFF_SIMPLEX) {
+ CARPSTATS_INC(carps_badauth);
+ ifp->if_ierrors++;
+ CARP_UNLOCK(sc);
+ CARP_LOG("%s, replay or network loop detected.\n",
+ ifp->if_xname);
+ } else
+ CARP_UNLOCK(sc);
+ m_freem(m);
+ return;
+ }
sc_tv.tv_sec = sc->sc_advbase;
sc_tv.tv_usec = DEMOTE_ADVSKEW(sc) * 1000000 / 256;
@@ -700,13 +705,12 @@ carp_prepare_ad(struct mbuf *m, struct carp_softc *sc, struct carp_header *ch)
{
struct m_tag *mtag;
- if (sc->sc_init_counter) {
+ if (!sc->sc_counter) {
/* this could also be seconds since unix epoch */
sc->sc_counter = arc4random();
sc->sc_counter = sc->sc_counter << 32;
sc->sc_counter += arc4random();
- } else
- sc->sc_counter++;
+ }
ch->carp_counter[0] = htonl((sc->sc_counter>>32)&0xffffffff);
ch->carp_counter[1] = htonl(sc->sc_counter&0xffffffff);
@@ -772,7 +776,8 @@ carp_send_ad_error(struct carp_softc *sc, int error)
char msg[sizeof(fmt) + IFNAMSIZ];
sprintf(msg, fmt, error, sc->sc_carpdev->if_xname);
- carp_demote_adj(V_carp_senderr_adj, msg);
+ if (V_carp_senderr_adj > 0)
+ carp_demote_adj(V_carp_senderr_adj, msg);
}
sc->sc_sendad_success = 0;
} else {
@@ -782,7 +787,8 @@ carp_send_ad_error(struct carp_softc *sc, int error)
char msg[sizeof(fmt) + IFNAMSIZ];
sprintf(msg, fmt, sc->sc_carpdev->if_xname);
- carp_demote_adj(-V_carp_senderr_adj, msg);
+ if (V_carp_senderr_adj > 0)
+ carp_demote_adj(-V_carp_senderr_adj, msg);
sc->sc_sendad_errors = 0;
} else
sc->sc_sendad_errors = 0;
@@ -1117,18 +1123,17 @@ carp_forus(struct ifnet *ifp, u_char *dhost)
if (ena[0] || ena[1] || ena[2] != 0x5e || ena[3] || ena[4] != 1)
return (0);
- CIF_LOCK(ifp->if_carp);
+ CIF_RLOCK(ifp->if_carp);
IFNET_FOREACH_CARP(ifp, sc) {
- CARP_LOCK(sc);
- if (sc->sc_state == MASTER && !bcmp(dhost, LLADDR(&sc->sc_addr),
- ETHER_ADDR_LEN)) {
- CARP_UNLOCK(sc);
- CIF_UNLOCK(ifp->if_carp);
+ //CARP_LOCK(sc);
+ if (sc->sc_state == MASTER && ena[5] == sc->sc_vhid) {
+ //CARP_UNLOCK(sc);
+ CIF_RUNLOCK(ifp->if_carp);
return (1);
}
- CARP_UNLOCK(sc);
+ //CARP_UNLOCK(sc);
}
- CIF_UNLOCK(ifp->if_carp);
+ CIF_RUNLOCK(ifp->if_carp);
return (0);
}
@@ -1485,9 +1490,9 @@ carp_alloc(struct ifnet *ifp)
sc = malloc(sizeof(*sc), M_CARP, M_WAITOK|M_ZERO);
+ sc->sc_counter = 0;
sc->sc_advbase = CARP_DFLTINTV;
sc->sc_vhid = -1; /* required setting */
- sc->sc_init_counter = 1;
sc->sc_state = INIT;
sc->sc_ifasiz = sizeof(struct ifaddr *);
@@ -1503,9 +1508,9 @@ carp_alloc(struct ifnet *ifp)
#endif
callout_init_mtx(&sc->sc_ad_tmo, &sc->sc_mtx, CALLOUT_RETURNUNLOCKED);
- CIF_LOCK(cif);
+ CIF_WLOCK(cif);
TAILQ_INSERT_TAIL(&cif->cif_vrs, sc, sc_list);
- CIF_UNLOCK(cif);
+ CIF_WUNLOCK(cif);
mtx_lock(&carp_mtx);
LIST_INSERT_HEAD(&carp_list, sc, sc_next);
@@ -1669,11 +1674,11 @@ carp_ioctl(struct ifreq *ifr, u_long cmd, struct thread *td)
}
if (ifp->if_carp) {
- CIF_LOCK(ifp->if_carp);
+ CIF_RLOCK(ifp->if_carp);
IFNET_FOREACH_CARP(ifp, sc)
if (sc->sc_vhid == carpr.carpr_vhid)
break;
- CIF_UNLOCK(ifp->if_carp);
+ CIF_RUNLOCK(ifp->if_carp);
}
if (sc == NULL) {
sc = carp_alloc(ifp);
@@ -1747,11 +1752,11 @@ carp_ioctl(struct ifreq *ifr, u_long cmd, struct thread *td)
priveleged = (priv_check(td, PRIV_NETINET_CARP) == 0);
if (carpr.carpr_vhid != 0) {
- CIF_LOCK(ifp->if_carp);
+ CIF_RLOCK(ifp->if_carp);
IFNET_FOREACH_CARP(ifp, sc)
if (sc->sc_vhid == carpr.carpr_vhid)
break;
- CIF_UNLOCK(ifp->if_carp);
+ CIF_RUNLOCK(ifp->if_carp);
if (sc == NULL) {
error = ENOENT;
break;
@@ -1762,12 +1767,12 @@ carp_ioctl(struct ifreq *ifr, u_long cmd, struct thread *td)
int i, count;
count = 0;
- CIF_LOCK(ifp->if_carp);
+ CIF_RLOCK(ifp->if_carp);
IFNET_FOREACH_CARP(ifp, sc)
count++;
if (count > carpr.carpr_count) {
- CIF_UNLOCK(ifp->if_carp);
+ CIF_RUNLOCK(ifp->if_carp);
error = EMSGSIZE;
break;
}
@@ -1779,12 +1784,12 @@ carp_ioctl(struct ifreq *ifr, u_long cmd, struct thread *td)
error = copyout(&carpr, ifr->ifr_data +
(i * sizeof(carpr)), sizeof(carpr));
if (error) {
- CIF_UNLOCK(ifp->if_carp);
+ CIF_RUNLOCK(ifp->if_carp);
break;
}
i++;
}
- CIF_UNLOCK(ifp->if_carp);
+ CIF_RUNLOCK(ifp->if_carp);
}
break;
}
@@ -1833,12 +1838,12 @@ carp_attach(struct ifaddr *ifa, int vhid)
return (EPROTOTYPE);
}
- CIF_LOCK(cif);
+ CIF_WLOCK(cif);
IFNET_FOREACH_CARP(ifp, sc)
if (sc->sc_vhid == vhid)
break;
if (sc == NULL) {
- CIF_UNLOCK(cif);
+ CIF_WUNLOCK(cif);
return (ENOENT);
}
@@ -1846,7 +1851,7 @@ carp_attach(struct ifaddr *ifa, int vhid)
if (ifa->ifa_carp->sc_vhid != vhid)
carp_detach_locked(ifa);
else {
- CIF_UNLOCK(cif);
+ CIF_WUNLOCK(cif);
return (0);
}
}
@@ -1891,7 +1896,7 @@ carp_attach(struct ifaddr *ifa, int vhid)
carp_sc_state(sc);
CARP_UNLOCK(sc);
- CIF_UNLOCK(cif);
+ CIF_WUNLOCK(cif);
return (0);
}
@@ -1902,7 +1907,7 @@ carp_detach(struct ifaddr *ifa)
struct ifnet *ifp = ifa->ifa_ifp;
struct carp_if *cif = ifp->if_carp;
- CIF_LOCK(cif);
+ CIF_WLOCK(cif);
carp_detach_locked(ifa);
CIF_FREE(cif);
}
@@ -1984,13 +1989,13 @@ carp_linkstate(struct ifnet *ifp)
{
struct carp_softc *sc;
- CIF_LOCK(ifp->if_carp);
+ CIF_RLOCK(ifp->if_carp);
IFNET_FOREACH_CARP(ifp, sc) {
CARP_LOCK(sc);
carp_sc_state(sc);
CARP_UNLOCK(sc);
}
- CIF_UNLOCK(ifp->if_carp);
+ CIF_RUNLOCK(ifp->if_carp);
}
static void
@@ -2025,9 +2030,11 @@ carp_sc_state(struct carp_softc *sc)
static void
carp_demote_adj(int adj, char *reason)
{
+ if (adj == 0)
+ return;
atomic_add_int(&V_carp_demotion, adj);
CARP_LOG("demoted by %d to %d (%s)\n", adj, V_carp_demotion, reason);
- taskqueue_enqueue(taskqueue_swi, &carp_sendall_task);
+ taskqueue_enqueue(taskqueue_thread, &carp_sendall_task);
}
static int
diff --git a/sys/netinet/ip_divert.c b/sys/netinet/ip_divert.c
index e698035..b74d60d 100644
--- a/sys/netinet/ip_divert.c
+++ b/sys/netinet/ip_divert.c
@@ -267,8 +267,7 @@ divert_packet(struct mbuf *m, int incoming)
* this iface name will come along for the ride.
* (see div_output for the other half of this.)
*/
- strlcpy(divsrc.sin_zero, m->m_pkthdr.rcvif->if_xname,
- sizeof(divsrc.sin_zero));
+ *((u_short *)divsrc.sin_zero) = m->m_pkthdr.rcvif->if_index;
}
/* Put packet on socket queue, if any */
@@ -342,7 +341,7 @@ div_output(struct socket *so, struct mbuf *m, struct sockaddr_in *sin,
/* Loopback avoidance and state recovery */
if (sin) {
- int i;
+ u_short idx;
/* set the starting point. We provide a non-zero slot,
* but a non_matching chain_id to skip that info and use
@@ -350,7 +349,7 @@ div_output(struct socket *so, struct mbuf *m, struct sockaddr_in *sin,
*/
dt->slot = 1; /* dummy, chain_id is invalid */
dt->chain_id = 0;
- dt->rulenum = sin->sin_port+1; /* host format ? */
+ dt->rulenum = sin->sin_port; /* host format ? */
dt->rule_id = 0;
/*
* Find receive interface with the given name, stuffed
@@ -358,10 +357,9 @@ div_output(struct socket *so, struct mbuf *m, struct sockaddr_in *sin,
* The name is user supplied data so don't trust its size
* or that it is zero terminated.
*/
- for (i = 0; i < sizeof(sin->sin_zero) && sin->sin_zero[i]; i++)
- ;
- if ( i > 0 && i < sizeof(sin->sin_zero))
- m->m_pkthdr.rcvif = ifunit(sin->sin_zero);
+ idx = *((u_short *)sin->sin_zero);
+ if ( idx > 0 )
+ m->m_pkthdr.rcvif = ifnet_byindex(idx);
}
/* Reinject packet into the system as incoming or outgoing */
@@ -832,5 +830,4 @@ static moduledata_t ipdivertmod = {
};
DECLARE_MODULE(ipdivert, ipdivertmod, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY);
-MODULE_DEPEND(ipdivert, ipfw, 2, 2, 2);
MODULE_VERSION(ipdivert, 1);
diff --git a/sys/netinet/ip_fastfwd.c b/sys/netinet/ip_fastfwd.c
index 0772cf0..9c3ea66 100644
--- a/sys/netinet/ip_fastfwd.c
+++ b/sys/netinet/ip_fastfwd.c
@@ -109,12 +109,6 @@ __FBSDID("$FreeBSD$");
#include <machine/in_cksum.h>
-static VNET_DEFINE(int, ipfastforward_active);
-#define V_ipfastforward_active VNET(ipfastforward_active)
-
-SYSCTL_VNET_INT(_net_inet_ip, OID_AUTO, fastforwarding, CTLFLAG_RW,
- &VNET_NAME(ipfastforward_active), 0, "Enable fast IP forwarding");
-
static struct sockaddr_in *
ip_findroute(struct route *ro, struct in_addr dest, struct mbuf *m)
{
@@ -159,7 +153,7 @@ ip_findroute(struct route *ro, struct in_addr dest, struct mbuf *m)
* to ip_input for full processing.
*/
struct mbuf *
-ip_fastforward(struct mbuf *m)
+ip_tryforward(struct mbuf *m)
{
struct ip *ip;
struct mbuf *m0 = NULL;
@@ -167,119 +161,20 @@ ip_fastforward(struct mbuf *m)
struct sockaddr_in *dst = NULL;
struct ifnet *ifp;
struct in_addr odest, dest;
- uint16_t sum, ip_len, ip_off;
+ uint16_t ip_len, ip_off;
int error = 0;
- int hlen, mtu;
+ int mtu;
struct m_tag *fwd_tag = NULL;
/*
* Are we active and forwarding packets?
*/
- if (!V_ipfastforward_active || !V_ipforwarding)
- return m;
M_ASSERTVALID(m);
M_ASSERTPKTHDR(m);
bzero(&ro, sizeof(ro));
- /*
- * Step 1: check for packet drop conditions (and sanity checks)
- */
-
- /*
- * Is entire packet big enough?
- */
- if (m->m_pkthdr.len < sizeof(struct ip)) {
- IPSTAT_INC(ips_tooshort);
- goto drop;
- }
-
- /*
- * Is first mbuf large enough for ip header and is header present?
- */
- if (m->m_len < sizeof (struct ip) &&
- (m = m_pullup(m, sizeof (struct ip))) == NULL) {
- IPSTAT_INC(ips_toosmall);
- return NULL; /* mbuf already free'd */
- }
-
- ip = mtod(m, struct ip *);
-
- /*
- * Is it IPv4?
- */
- if (ip->ip_v != IPVERSION) {
- IPSTAT_INC(ips_badvers);
- goto drop;
- }
-
- /*
- * Is IP header length correct and is it in first mbuf?
- */
- hlen = ip->ip_hl << 2;
- if (hlen < sizeof(struct ip)) { /* minimum header length */
- IPSTAT_INC(ips_badhlen);
- goto drop;
- }
- if (hlen > m->m_len) {
- if ((m = m_pullup(m, hlen)) == NULL) {
- IPSTAT_INC(ips_badhlen);
- return NULL; /* mbuf already free'd */
- }
- ip = mtod(m, struct ip *);
- }
-
- /*
- * Checksum correct?
- */
- if (m->m_pkthdr.csum_flags & CSUM_IP_CHECKED)
- sum = !(m->m_pkthdr.csum_flags & CSUM_IP_VALID);
- else {
- if (hlen == sizeof(struct ip))
- sum = in_cksum_hdr(ip);
- else
- sum = in_cksum(m, hlen);
- }
- if (sum) {
- IPSTAT_INC(ips_badsum);
- goto drop;
- }
-
- /*
- * Remember that we have checked the IP header and found it valid.
- */
- m->m_pkthdr.csum_flags |= (CSUM_IP_CHECKED | CSUM_IP_VALID);
-
- ip_len = ntohs(ip->ip_len);
-
- /*
- * Is IP length longer than packet we have got?
- */
- if (m->m_pkthdr.len < ip_len) {
- IPSTAT_INC(ips_tooshort);
- goto drop;
- }
-
- /*
- * Is packet longer than IP header tells us? If yes, truncate packet.
- */
- if (m->m_pkthdr.len > ip_len) {
- if (m->m_len == m->m_pkthdr.len) {
- m->m_len = ip_len;
- m->m_pkthdr.len = ip_len;
- } else
- m_adj(m, ip_len - m->m_pkthdr.len);
- }
-
- /*
- * Is packet from or to 127/8?
- */
- if ((ntohl(ip->ip_dst.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET ||
- (ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) {
- IPSTAT_INC(ips_badaddr);
- goto drop;
- }
#ifdef ALTQ
/*
@@ -290,12 +185,10 @@ ip_fastforward(struct mbuf *m)
#endif
/*
- * Step 2: fallback conditions to normal ip_input path processing
- */
-
- /*
* Only IP packets without options
*/
+ ip = mtod(m, struct ip *);
+
if (ip->ip_hl != (sizeof(struct ip) >> 2)) {
if (V_ip_doopts == 1)
return m;
@@ -496,18 +389,6 @@ passout:
goto consumed;
}
-#ifndef ALTQ
- /*
- * Check if there is enough space in the interface queue
- */
- if ((ifp->if_snd.ifq_len + ip_len / ifp->if_mtu + 1) >=
- ifp->if_snd.ifq_maxlen) {
- IPSTAT_INC(ips_odropped);
- /* would send source quench here but that is depreciated */
- goto drop;
- }
-#endif
-
/*
* Check if media link state of interface is not down
*/
diff --git a/sys/netinet/ip_fw.h b/sys/netinet/ip_fw.h
index dae8cc0..188057d 100644
--- a/sys/netinet/ip_fw.h
+++ b/sys/netinet/ip_fw.h
@@ -65,7 +65,8 @@
/* IP_FW3 header/opcodes */
typedef struct _ip_fw3_opheader {
uint16_t opcode; /* Operation opcode */
- uint16_t reserved[3]; /* Align to 64-bit boundary */
+ uint16_t ctxid;
+ uint16_t reserved[2]; /* Align to 64-bit boundary */
} ip_fw3_opheader;
@@ -74,6 +75,14 @@ typedef struct _ip_fw3_opheader {
#define IP_FW_TABLE_XDEL 87 /* delete entry */
#define IP_FW_TABLE_XGETSIZE 88 /* get table size */
#define IP_FW_TABLE_XLIST 89 /* list table contents */
+#define IP_FW_TABLE_XLISTENTRY 90 /* list one table entry contents */
+#define IP_FW_TABLE_XZEROENTRY 91 /* zero one table entry stats */
+#define IP_FW_CTX_GET 92
+#define IP_FW_CTX_ADD 93
+#define IP_FW_CTX_DEL 94
+#define IP_FW_CTX_SET 95
+#define IP_FW_CTX_ADDMEMBER 96
+#define IP_FW_CTX_DELMEMBER 97
/*
* The kernel representation of ipfw rules is made of a list of
@@ -600,11 +609,16 @@ struct _ipfw_dyn_rule {
#define IPFW_TABLE_CIDR 1 /* Table for holding IPv4/IPv6 prefixes */
#define IPFW_TABLE_INTERFACE 2 /* Table for holding interface names */
-#define IPFW_TABLE_MAXTYPE 2 /* Maximum valid number */
+#define IPFW_TABLE_MIX 3 /* Table for holding IPv4/mac entries */
+#define IPFW_TABLE_MAC 4 /* Table for holding mac entries */
+#define IPFW_TABLE_MAXTYPE 5 /* Maximum valid number */
typedef struct _ipfw_table_entry {
in_addr_t addr; /* network address */
u_int32_t value; /* value */
+ uint64_t mac_addr;
+ uint64_t bytes;
+ uint64_t packets;
u_int16_t tbl; /* table number */
u_int8_t masklen; /* mask length */
} ipfw_table_entry;
@@ -616,6 +630,10 @@ typedef struct _ipfw_table_xentry {
uint16_t tbl; /* table number */
uint16_t flags; /* record flags */
uint32_t value; /* value */
+ uint32_t timestamp;
+ uint64_t mac_addr;
+ uint64_t bytes;
+ uint64_t packets;
union {
/* Longest field needs to be aligned by 4-byte boundary */
struct in6_addr addr6; /* IPv6 address */
diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c
index 2dc080f..5b2e544 100644
--- a/sys/netinet/ip_input.c
+++ b/sys/netinet/ip_input.c
@@ -77,6 +77,8 @@ __FBSDID("$FreeBSD$");
#include <netinet/ip_carp.h>
#ifdef IPSEC
#include <netinet/ip_ipsec.h>
+#include <netipsec/ipsec.h>
+#include <netipsec/key.h>
#endif /* IPSEC */
#include <sys/socketvar.h>
@@ -297,6 +299,9 @@ ip_init(void)
if ((i = pfil_head_register(&V_inet_pfil_hook)) != 0)
printf("%s: WARNING: unable to register pfil hook, "
"error %d\n", __func__, i);
+ else
+ pfil_head_export_sysctl(&V_inet_pfil_hook,
+ SYSCTL_STATIC_CHILDREN(_net_inet_ip));
/* Skip initialization of globals for non-default instances. */
if (!IS_DEFAULT_VNET(curvnet))
@@ -464,12 +469,23 @@ tooshort:
} else
m_adj(m, ip_len - m->m_pkthdr.len);
}
+
+ /* Try to forward the packet, but if we fail continue */
#ifdef IPSEC
+ /* For now we do not handle IPSEC in tryforward. */
+ if (!key_havesp(IPSEC_DIR_INBOUND) && !key_havesp(IPSEC_DIR_OUTBOUND) &&
+ (V_ipforwarding == 1))
+ if (ip_tryforward(m) == NULL)
+ return;
/*
* Bypass packet filtering for packets previously handled by IPsec.
*/
if (ip_ipsec_filtertunnel(m))
goto passin;
+#else
+ if (V_ipforwarding == 1)
+ if (ip_tryforward(m) == NULL)
+ return;
#endif /* IPSEC */
/*
@@ -499,8 +515,7 @@ tooshort:
goto ours;
}
if (m->m_flags & M_IP_NEXTHOP) {
- dchg = (m_tag_find(m, PACKET_TAG_IPFORWARD, NULL) != NULL);
- if (dchg != 0) {
+ if (m_tag_find(m, PACKET_TAG_IPFORWARD, NULL) != NULL) {
/*
* Directly ship the packet on. This allows
* forwarding packets originally destined to us
@@ -674,10 +689,6 @@ passin:
IPSTAT_INC(ips_cantforward);
m_freem(m);
} else {
-#ifdef IPSEC
- if (ip_ipsec_fwd(m))
- goto bad;
-#endif /* IPSEC */
ip_forward(m, dchg);
}
return;
@@ -722,7 +733,7 @@ ours:
* note that we do not visit this with protocols with pcb layer
* code - like udp/tcp/raw ip.
*/
- if (ip_ipsec_input(m))
+ if (ip_ipsec_input(m, ip->ip_p) != 0)
goto bad;
#endif /* IPSEC */
@@ -1355,6 +1366,13 @@ ip_forward(struct mbuf *m, int srcrt)
m_freem(m);
return;
}
+#ifdef IPSEC
+ if (ip_ipsec_fwd(m) != 0) {
+ IPSTAT_INC(ips_cantforward);
+ m_freem(m);
+ return;
+ }
+#endif /* IPSEC */
#ifdef IPSTEALTH
if (!V_ipstealth) {
#endif
diff --git a/sys/netinet/ip_ipsec.c b/sys/netinet/ip_ipsec.c
index 133fa7c..2e43e43 100644
--- a/sys/netinet/ip_ipsec.c
+++ b/sys/netinet/ip_ipsec.c
@@ -61,15 +61,12 @@ __FBSDID("$FreeBSD$");
#include <machine/in_cksum.h>
-#ifdef IPSEC
#include <netipsec/ipsec.h>
#include <netipsec/xform.h>
#include <netipsec/key.h>
-#endif /*IPSEC*/
extern struct protosw inetsw[];
-#ifdef IPSEC
#ifdef IPSEC_FILTERTUNNEL
static VNET_DEFINE(int, ip4_ipsec_filtertunnel) = 1;
#else
@@ -81,7 +78,6 @@ SYSCTL_DECL(_net_inet_ipsec);
SYSCTL_VNET_INT(_net_inet_ipsec, OID_AUTO, filtertunnel,
CTLFLAG_RW, &VNET_NAME(ip4_ipsec_filtertunnel), 0,
"If set filter packets from an IPsec tunnel.");
-#endif /* IPSEC */
/*
* Check if we have to jump over firewall processing for this packet.
@@ -91,7 +87,6 @@ SYSCTL_VNET_INT(_net_inet_ipsec, OID_AUTO, filtertunnel,
int
ip_ipsec_filtertunnel(struct mbuf *m)
{
-#ifdef IPSEC
/*
* Bypass packet filtering for packets previously handled by IPsec.
@@ -99,50 +94,20 @@ ip_ipsec_filtertunnel(struct mbuf *m)
if (!V_ip4_ipsec_filtertunnel &&
m_tag_find(m, PACKET_TAG_IPSEC_IN_DONE, NULL) != NULL)
return 1;
-#endif
return 0;
}
/*
* Check if this packet has an active SA and needs to be dropped instead
* of forwarded.
- * Called from ip_input().
+ * Called from ip_forward().
* 1 = drop packet, 0 = forward packet.
*/
int
ip_ipsec_fwd(struct mbuf *m)
{
-#ifdef IPSEC
- struct m_tag *mtag;
- struct tdb_ident *tdbi;
- struct secpolicy *sp;
- int error;
-
- mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_DONE, NULL);
- if (mtag != NULL) {
- tdbi = (struct tdb_ident *)(mtag + 1);
- sp = ipsec_getpolicy(tdbi, IPSEC_DIR_INBOUND);
- } else {
- sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND,
- IP_FORWARDING, &error);
- }
- if (sp == NULL) { /* NB: can happen if error */
- /*XXX error stat???*/
- DPRINTF(("ip_input: no SP for forwarding\n")); /*XXX*/
- return 1;
- }
- /*
- * Check security policy against packet attributes.
- */
- error = ipsec_in_reject(sp, m);
- KEY_FREESP(&sp);
- if (error) {
- IPSTAT_INC(ips_cantforward);
- return 1;
- }
-#endif /* IPSEC */
- return 0;
+ return (ipsec4_in_reject(m, NULL));
}
/*
@@ -153,51 +118,16 @@ ip_ipsec_fwd(struct mbuf *m)
* 1 = drop packet, 0 = continue processing packet.
*/
int
-ip_ipsec_input(struct mbuf *m)
+ip_ipsec_input(struct mbuf *m, int nxt)
{
-#ifdef IPSEC
- struct ip *ip = mtod(m, struct ip *);
- struct m_tag *mtag;
- struct tdb_ident *tdbi;
- struct secpolicy *sp;
- int error;
/*
* enforce IPsec policy checking if we are seeing last header.
* note that we do not visit this with protocols with pcb layer
* code - like udp/tcp/raw ip.
*/
- if ((inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0) {
- /*
- * Check if the packet has already had IPsec processing
- * done. If so, then just pass it along. This tag gets
- * set during AH, ESP, etc. input handling, before the
- * packet is returned to the ip input queue for delivery.
- */
- mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_DONE, NULL);
- if (mtag != NULL) {
- tdbi = (struct tdb_ident *)(mtag + 1);
- sp = ipsec_getpolicy(tdbi, IPSEC_DIR_INBOUND);
- } else {
- sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND,
- IP_FORWARDING, &error);
- }
- if (sp != NULL) {
- /*
- * Check security policy against packet attributes.
- */
- error = ipsec_in_reject(sp, m);
- KEY_FREESP(&sp);
- } else {
- /* XXX error stat??? */
- error = EINVAL;
- DPRINTF(("ip_input: no SP, packet discarded\n"));/*XXX*/
- return 1;
- }
- if (error)
- return 1;
- }
-#endif /* IPSEC */
- return 0;
+ if ((inetsw[ip_protox[nxt]].pr_flags & PR_LASTHDR) != 0)
+ return (ipsec4_in_reject(m, NULL));
+ return (0);
}
/*
@@ -224,12 +154,9 @@ ip_ipsec_mtu(struct mbuf *m, int mtu)
* -1 = packet was reinjected and stop processing packet
*/
int
-ip_ipsec_output(struct mbuf **m, struct inpcb *inp, int *flags, int *error)
+ip_ipsec_output(struct mbuf **m, struct inpcb *inp, int *error)
{
-#ifdef IPSEC
- struct secpolicy *sp = NULL;
- struct tdb_ident *tdbi;
- struct m_tag *mtag;
+ struct secpolicy *sp;
if (!key_havesp(IPSEC_DIR_OUTBOUND))
return 0;
@@ -243,17 +170,11 @@ ip_ipsec_output(struct mbuf **m, struct inpcb *inp, int *flags, int *error)
* AH, ESP, etc. processing), there will be a tag to bypass
* the lookup and related policy checking.
*/
- mtag = m_tag_find(*m, PACKET_TAG_IPSEC_PENDING_TDB, NULL);
- if (mtag != NULL) {
- tdbi = (struct tdb_ident *)(mtag + 1);
- sp = ipsec_getpolicy(tdbi, IPSEC_DIR_OUTBOUND);
- if (sp == NULL)
- *error = -EINVAL; /* force silent drop */
- m_tag_delete(*m, mtag);
- } else {
- sp = ipsec4_checkpolicy(*m, IPSEC_DIR_OUTBOUND, *flags,
- error, inp);
+ if (m_tag_find(*m, PACKET_TAG_IPSEC_OUT_DONE, NULL) != NULL) {
+ *error = 0;
+ return (0);
}
+ sp = ipsec4_checkpolicy(*m, IPSEC_DIR_OUTBOUND, error, inp);
/*
* There are four return cases:
* sp != NULL apply IPsec policy
@@ -262,40 +183,6 @@ ip_ipsec_output(struct mbuf **m, struct inpcb *inp, int *flags, int *error)
* sp == NULL, error != 0 discard packet, report error
*/
if (sp != NULL) {
- /* Loop detection, check if ipsec processing already done */
- KASSERT(sp->req != NULL, ("ip_output: no ipsec request"));
- for (mtag = m_tag_first(*m); mtag != NULL;
- mtag = m_tag_next(*m, mtag)) {
- if (mtag->m_tag_cookie != MTAG_ABI_COMPAT)
- continue;
- if (mtag->m_tag_id != PACKET_TAG_IPSEC_OUT_DONE &&
- mtag->m_tag_id != PACKET_TAG_IPSEC_OUT_CRYPTO_NEEDED)
- continue;
- /*
- * Check if policy has an SA associated with it.
- * This can happen when an SP has yet to acquire
- * an SA; e.g. on first reference. If it occurs,
- * then we let ipsec4_process_packet do its thing.
- */
- if (sp->req->sav == NULL)
- break;
- tdbi = (struct tdb_ident *)(mtag + 1);
- if (tdbi->spi == sp->req->sav->spi &&
- tdbi->proto == sp->req->sav->sah->saidx.proto &&
- bcmp(&tdbi->dst, &sp->req->sav->sah->saidx.dst,
- sizeof (union sockaddr_union)) == 0) {
- /*
- * No IPsec processing is needed, free
- * reference to SP.
- *
- * NB: null pointer to avoid free at
- * done: below.
- */
- KEY_FREESP(&sp), sp = NULL;
- goto done;
- }
- }
-
/*
* Do delayed checksums now because we send before
* this is done in the normal processing path.
@@ -314,7 +201,10 @@ ip_ipsec_output(struct mbuf **m, struct inpcb *inp, int *flags, int *error)
#endif
/* NB: callee frees mbuf */
- *error = ipsec4_process_packet(*m, sp->req, *flags, 0);
+ *error = ipsec4_process_packet(*m, sp->req);
+ /* Release SP if an error occured */
+ if (*error != 0)
+ KEY_FREESP(&sp);
if (*error == EJUSTRETURN) {
/*
* We had a SP with a level of 'use' and no SA. We
@@ -346,22 +236,17 @@ ip_ipsec_output(struct mbuf **m, struct inpcb *inp, int *flags, int *error)
if (*error == -EINVAL)
*error = 0;
goto bad;
- } else {
- /* No IPsec processing for this packet. */
}
+ /* No IPsec processing for this packet. */
}
done:
if (sp != NULL)
KEY_FREESP(&sp);
return 0;
reinjected:
- if (sp != NULL)
- KEY_FREESP(&sp);
- return -1;
+ return (-1);
bad:
if (sp != NULL)
KEY_FREESP(&sp);
return 1;
-#endif /* IPSEC */
- return 0;
}
diff --git a/sys/netinet/ip_ipsec.h b/sys/netinet/ip_ipsec.h
index 2870c11..f499b74 100644
--- a/sys/netinet/ip_ipsec.h
+++ b/sys/netinet/ip_ipsec.h
@@ -34,7 +34,7 @@
int ip_ipsec_filtertunnel(struct mbuf *);
int ip_ipsec_fwd(struct mbuf *);
-int ip_ipsec_input(struct mbuf *);
+int ip_ipsec_input(struct mbuf *, int);
int ip_ipsec_mtu(struct mbuf *, int);
-int ip_ipsec_output(struct mbuf **, struct inpcb *, int *, int *);
+int ip_ipsec_output(struct mbuf **, struct inpcb *, int *);
#endif
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c
index 954785d..0aee48d 100644
--- a/sys/netinet/ip_output.c
+++ b/sys/netinet/ip_output.c
@@ -123,7 +123,7 @@ ip_output(struct mbuf *m, struct mbuf *opt, struct route *ro, int flags,
struct ifnet *ifp = NULL; /* keep compiler happy */
struct mbuf *m0;
int hlen = sizeof (struct ip);
- int mtu;
+ int mtu = 0;
int n; /* scratchpad */
int error = 0;
struct sockaddr_in *dst;
@@ -136,9 +136,8 @@ ip_output(struct mbuf *m, struct mbuf *opt, struct route *ro, int flags,
struct in_addr odst;
struct m_tag *fwd_tag = NULL;
int have_ia_ref;
-#ifdef IPSEC
- int no_route_but_check_spd = 0;
-#endif
+ int no_route_but_check = 0;
+
M_ASSERTPKTHDR(m);
if (inp != NULL) {
@@ -292,10 +291,11 @@ again:
* There is no route for this packet, but it is
* possible that a matching SPD entry exists.
*/
- no_route_but_check_spd = 1;
mtu = 0; /* Silence GCC warning. */
- goto sendit;
#endif
+ no_route_but_check = 1;
+ goto sendit;
+
IPSTAT_INC(ips_noroute);
error = EHOSTUNREACH;
goto bad;
@@ -482,7 +482,7 @@ again:
sendit:
#ifdef IPSEC
- switch(ip_ipsec_output(&m, inp, &flags, &error)) {
+ switch(ip_ipsec_output(&m, inp, &error)) {
case 1:
goto bad;
case -1:
@@ -491,28 +491,34 @@ sendit:
default:
break; /* Continue with packet processing. */
}
- /*
- * Check if there was a route for this packet; return error if not.
- */
- if (no_route_but_check_spd) {
- IPSTAT_INC(ips_noroute);
- error = EHOSTUNREACH;
- goto bad;
- }
/* Update variables that are affected by ipsec4_output(). */
ip = mtod(m, struct ip *);
hlen = ip->ip_hl << 2;
#endif /* IPSEC */
/* Jump over all PFIL processing if hooks are not active. */
- if (!PFIL_HOOKED(&V_inet_pfil_hook))
+ if (!PFIL_HOOKED(&V_inet_pfil_hook)) {
+ if (no_route_but_check) {
+ IPSTAT_INC(ips_noroute);
+ error = EHOSTUNREACH;
+ goto bad;
+ }
goto passout;
+ }
+
+ if (ifp == NULL)
+ ifp = V_loif;
/* Run through list of hooks for output packets. */
odst.s_addr = ip->ip_dst.s_addr;
error = pfil_run_hooks(&V_inet_pfil_hook, &m, ifp, PFIL_OUT, inp);
if (error != 0 || m == NULL)
goto done;
+ if (no_route_but_check) {
+ IPSTAT_INC(ips_noroute);
+ error = EHOSTUNREACH;
+ goto bad;
+ }
ip = mtod(m, struct ip *);
diff --git a/sys/netinet/sctp_input.c b/sys/netinet/sctp_input.c
index 675848a..3b50590 100644
--- a/sys/netinet/sctp_input.c
+++ b/sys/netinet/sctp_input.c
@@ -5766,7 +5766,6 @@ sctp_common_input_processing(struct mbuf **mm, int iphlen, int offset, int lengt
#ifdef INET
case AF_INET:
if (ipsec4_in_reject(m, &inp->ip_inp.inp)) {
- IPSECSTAT_INC(ips_in_polvio);
SCTP_STAT_INCR(sctps_hdrops);
goto out;
}
@@ -5775,7 +5774,6 @@ sctp_common_input_processing(struct mbuf **mm, int iphlen, int offset, int lengt
#ifdef INET6
case AF_INET6:
if (ipsec6_in_reject(m, &inp->ip_inp.inp)) {
- IPSEC6STAT_INC(ips_in_polvio);
SCTP_STAT_INCR(sctps_hdrops);
goto out;
}
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c
index 32133ae..114802e 100644
--- a/sys/netinet/tcp_input.c
+++ b/sys/netinet/tcp_input.c
@@ -889,12 +889,10 @@ findpcb:
#ifdef IPSEC
#ifdef INET6
if (isipv6 && ipsec6_in_reject(m, inp)) {
- IPSEC6STAT_INC(ips_in_polvio);
goto dropunlock;
} else
#endif /* INET6 */
if (ipsec4_in_reject(m, inp) != 0) {
- IPSECSTAT_INC(ips_in_polvio);
goto dropunlock;
}
#endif /* IPSEC */
diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
index 79a2166..46bebf6 100644
--- a/sys/netinet/udp_usrreq.c
+++ b/sys/netinet/udp_usrreq.c
@@ -314,7 +314,6 @@ udp_append(struct inpcb *inp, struct ip *ip, struct mbuf *n, int off,
/* Check AH/ESP integrity. */
if (ipsec4_in_reject(n, inp)) {
m_freem(n);
- IPSECSTAT_INC(ips_in_polvio);
return;
}
#ifdef IPSEC_NAT_T
@@ -1561,7 +1560,8 @@ udp4_espdecap(struct inpcb *inp, struct mbuf *m, int off)
if (m->m_pkthdr.csum_flags & CSUM_DATA_VALID)
m->m_pkthdr.csum_flags &= ~(CSUM_DATA_VALID|CSUM_PSEUDO_HDR);
- (void) ipsec4_common_input(m, iphlen, ip->ip_p);
+ (void) ipsec_common_input(m, iphlen, offsetof(struct ip, ip_p),
+ AF_INET, ip->ip_p);
return (NULL); /* NB: consumed, bypass processing. */
}
#endif /* defined(IPSEC) && defined(IPSEC_NAT_T) */
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