version 1.328, 2016/01/21 15:41:30 |
version 1.333, 2016/07/04 08:10:50 |
Line 284 struct mowner ip_tx_mowner = MOWNER_INIT |
|
Line 284 struct mowner ip_tx_mowner = MOWNER_INIT |
|
|
|
static void ipintr(void *); |
static void ipintr(void *); |
static void ip_input(struct mbuf *); |
static void ip_input(struct mbuf *); |
static void ip_forward(struct mbuf *, int); |
static void ip_forward(struct mbuf *, int, struct ifnet *); |
static bool ip_dooptions(struct mbuf *); |
static bool ip_dooptions(struct mbuf *); |
static struct in_ifaddr *ip_rtaddr(struct in_addr); |
static struct in_ifaddr *ip_rtaddr(struct in_addr); |
static void sysctl_net_inet_ip_setup(struct sysctllog **); |
static void sysctl_net_inet_ip_setup(struct sysctllog **); |
|
|
|
static struct in_ifaddr *ip_match_our_address(struct ifnet *, struct ip *, |
|
int *); |
|
static struct in_ifaddr *ip_match_our_address_broadcast(struct ifnet *, |
|
struct ip *); |
|
|
/* XXX: Not yet enabled. */ |
/* XXX: Not yet enabled. */ |
#define SOFTNET_LOCK() KASSERT(mutex_owned(softnet_lock)) |
#define SOFTNET_LOCK() KASSERT(mutex_owned(softnet_lock)) |
#define SOFTNET_UNLOCK() KASSERT(mutex_owned(softnet_lock)) |
#define SOFTNET_UNLOCK() KASSERT(mutex_owned(softnet_lock)) |
|
|
ipstat_percpu = percpu_alloc(sizeof(uint64_t) * IP_NSTATS); |
ipstat_percpu = percpu_alloc(sizeof(uint64_t) * IP_NSTATS); |
} |
} |
|
|
|
static struct in_ifaddr * |
|
ip_match_our_address(struct ifnet *ifp, struct ip *ip, int *downmatch) |
|
{ |
|
struct in_ifaddr *ia = NULL; |
|
int checkif; |
|
|
|
/* |
|
* Enable a consistency check between the destination address |
|
* and the arrival interface for a unicast packet (the RFC 1122 |
|
* strong ES model) if IP forwarding is disabled and the packet |
|
* is not locally generated. |
|
* |
|
* XXX - Checking also should be disabled if the destination |
|
* address is ipnat'ed to a different interface. |
|
* |
|
* XXX - Checking is incompatible with IP aliases added |
|
* to the loopback interface instead of the interface where |
|
* the packets are received. |
|
* |
|
* XXX - We need to add a per ifaddr flag for this so that |
|
* we get finer grain control. |
|
*/ |
|
checkif = ip_checkinterface && (ipforwarding == 0) && |
|
(ifp->if_flags & IFF_LOOPBACK) == 0; |
|
|
|
LIST_FOREACH(ia, &IN_IFADDR_HASH(ip->ip_dst.s_addr), ia_hash) { |
|
if (in_hosteq(ia->ia_addr.sin_addr, ip->ip_dst)) { |
|
if (ia->ia4_flags & IN_IFF_NOTREADY) |
|
continue; |
|
if (checkif && ia->ia_ifp != ifp) |
|
continue; |
|
if ((ia->ia_ifp->if_flags & IFF_UP) != 0) |
|
break; |
|
else |
|
downmatch++; |
|
} |
|
} |
|
|
|
return ia; |
|
} |
|
|
|
static struct in_ifaddr * |
|
ip_match_our_address_broadcast(struct ifnet *ifp, struct ip *ip) |
|
{ |
|
struct in_ifaddr *ia = NULL; |
|
struct ifaddr *ifa; |
|
|
|
IFADDR_FOREACH(ifa, ifp) { |
|
if (ifa->ifa_addr->sa_family != AF_INET) |
|
continue; |
|
ia = ifatoia(ifa); |
|
if (ia->ia4_flags & IN_IFF_NOTREADY) |
|
continue; |
|
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
|
in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
|
/* |
|
* Look for all-0's host part (old broadcast addr), |
|
* either for subnet or net. |
|
*/ |
|
ip->ip_dst.s_addr == ia->ia_subnet || |
|
ip->ip_dst.s_addr == ia->ia_net) |
|
goto matched; |
|
/* |
|
* An interface with IP address zero accepts |
|
* all packets that arrive on that interface. |
|
*/ |
|
if (in_nullhost(ia->ia_addr.sin_addr)) |
|
goto matched; |
|
} |
|
ia = NULL; |
|
|
|
matched: |
|
return ia; |
|
} |
|
|
/* |
/* |
* IP software interrupt routine. |
* IP software interrupt routine. |
*/ |
*/ |
Line 368 ip_input(struct mbuf *m) |
|
Line 448 ip_input(struct mbuf *m) |
|
{ |
{ |
struct ip *ip = NULL; |
struct ip *ip = NULL; |
struct in_ifaddr *ia; |
struct in_ifaddr *ia; |
struct ifaddr *ifa; |
|
int hlen = 0, len; |
int hlen = 0, len; |
int downmatch; |
int downmatch; |
int checkif; |
|
int srcrt = 0; |
int srcrt = 0; |
ifnet_t *ifp; |
ifnet_t *ifp; |
|
struct psref psref; |
|
|
KASSERTMSG(cpu_softintr_p(), "ip_input: not in the software " |
KASSERTMSG(cpu_softintr_p(), "ip_input: not in the software " |
"interrupt handler; synchronization assumptions violated"); |
"interrupt handler; synchronization assumptions violated"); |
|
|
MCLAIM(m, &ip_rx_mowner); |
MCLAIM(m, &ip_rx_mowner); |
KASSERT((m->m_flags & M_PKTHDR) != 0); |
KASSERT((m->m_flags & M_PKTHDR) != 0); |
ifp = m->m_pkthdr.rcvif; |
|
|
ifp = m_get_rcvif_psref(m, &psref); |
|
if (__predict_false(ifp == NULL)) |
|
goto out; |
|
|
/* |
/* |
* If no IP addresses have been set yet but the interfaces |
* If no IP addresses have been set yet but the interfaces |
Line 388 ip_input(struct mbuf *m) |
|
Line 470 ip_input(struct mbuf *m) |
|
* Note: we pre-check without locks held. |
* Note: we pre-check without locks held. |
*/ |
*/ |
if (!TAILQ_FIRST(&in_ifaddrhead)) { |
if (!TAILQ_FIRST(&in_ifaddrhead)) { |
goto bad; |
goto out; |
} |
} |
IP_STATINC(IP_STAT_TOTAL); |
IP_STATINC(IP_STAT_TOTAL); |
|
|
Line 403 ip_input(struct mbuf *m) |
|
Line 485 ip_input(struct mbuf *m) |
|
(max_linkhdr + 3) & ~3)) == NULL) { |
(max_linkhdr + 3) & ~3)) == NULL) { |
/* XXXJRT new stat, please */ |
/* XXXJRT new stat, please */ |
IP_STATINC(IP_STAT_TOOSMALL); |
IP_STATINC(IP_STAT_TOOSMALL); |
return; |
goto out; |
} |
} |
} else if (__predict_false(m->m_len < sizeof (struct ip))) { |
} else if (__predict_false(m->m_len < sizeof (struct ip))) { |
if ((m = m_pullup(m, sizeof (struct ip))) == NULL) { |
if ((m = m_pullup(m, sizeof (struct ip))) == NULL) { |
IP_STATINC(IP_STAT_TOOSMALL); |
IP_STATINC(IP_STAT_TOOSMALL); |
return; |
goto out; |
} |
} |
} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
if (ip->ip_v != IPVERSION) { |
if (ip->ip_v != IPVERSION) { |
IP_STATINC(IP_STAT_BADVERS); |
IP_STATINC(IP_STAT_BADVERS); |
goto bad; |
goto out; |
} |
} |
hlen = ip->ip_hl << 2; |
hlen = ip->ip_hl << 2; |
if (hlen < sizeof(struct ip)) { /* minimum header length */ |
if (hlen < sizeof(struct ip)) { /* minimum header length */ |
IP_STATINC(IP_STAT_BADHLEN); |
IP_STATINC(IP_STAT_BADHLEN); |
goto bad; |
goto out; |
} |
} |
if (hlen > m->m_len) { |
if (hlen > m->m_len) { |
if ((m = m_pullup(m, hlen)) == NULL) { |
if ((m = m_pullup(m, hlen)) == NULL) { |
IP_STATINC(IP_STAT_BADHLEN); |
IP_STATINC(IP_STAT_BADHLEN); |
return; |
goto out; |
} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
} |
} |
Line 435 ip_input(struct mbuf *m) |
|
Line 517 ip_input(struct mbuf *m) |
|
*/ |
*/ |
if (IN_MULTICAST(ip->ip_src.s_addr)) { |
if (IN_MULTICAST(ip->ip_src.s_addr)) { |
IP_STATINC(IP_STAT_BADADDR); |
IP_STATINC(IP_STAT_BADADDR); |
goto bad; |
goto out; |
} |
} |
|
|
/* 127/8 must not appear on wire - RFC1122 */ |
/* 127/8 must not appear on wire - RFC1122 */ |
Line 443 ip_input(struct mbuf *m) |
|
Line 525 ip_input(struct mbuf *m) |
|
(ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) { |
(ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) { |
if ((ifp->if_flags & IFF_LOOPBACK) == 0) { |
if ((ifp->if_flags & IFF_LOOPBACK) == 0) { |
IP_STATINC(IP_STAT_BADADDR); |
IP_STATINC(IP_STAT_BADADDR); |
goto bad; |
goto out; |
} |
} |
} |
} |
|
|
Line 452 ip_input(struct mbuf *m) |
|
Line 534 ip_input(struct mbuf *m) |
|
M_CSUM_IPv4_BAD)) { |
M_CSUM_IPv4_BAD)) { |
case M_CSUM_IPv4|M_CSUM_IPv4_BAD: |
case M_CSUM_IPv4|M_CSUM_IPv4_BAD: |
INET_CSUM_COUNTER_INCR(&ip_hwcsum_bad); |
INET_CSUM_COUNTER_INCR(&ip_hwcsum_bad); |
goto badcsum; |
IP_STATINC(IP_STAT_BADSUM); |
|
goto out; |
|
|
case M_CSUM_IPv4: |
case M_CSUM_IPv4: |
/* Checksum was okay. */ |
/* Checksum was okay. */ |
Line 467 ip_input(struct mbuf *m) |
|
Line 550 ip_input(struct mbuf *m) |
|
if (__predict_true(!(ifp->if_flags & IFF_LOOPBACK) || |
if (__predict_true(!(ifp->if_flags & IFF_LOOPBACK) || |
ip_do_loopback_cksum)) { |
ip_do_loopback_cksum)) { |
INET_CSUM_COUNTER_INCR(&ip_swcsum); |
INET_CSUM_COUNTER_INCR(&ip_swcsum); |
if (in_cksum(m, hlen) != 0) |
if (in_cksum(m, hlen) != 0) { |
goto badcsum; |
IP_STATINC(IP_STAT_BADSUM); |
|
goto out; |
|
} |
} |
} |
break; |
break; |
} |
} |
Line 481 ip_input(struct mbuf *m) |
|
Line 566 ip_input(struct mbuf *m) |
|
*/ |
*/ |
if (len < hlen) { |
if (len < hlen) { |
IP_STATINC(IP_STAT_BADLEN); |
IP_STATINC(IP_STAT_BADLEN); |
goto bad; |
goto out; |
} |
} |
|
|
/* |
/* |
Line 492 ip_input(struct mbuf *m) |
|
Line 577 ip_input(struct mbuf *m) |
|
*/ |
*/ |
if (m->m_pkthdr.len < len) { |
if (m->m_pkthdr.len < len) { |
IP_STATINC(IP_STAT_TOOSHORT); |
IP_STATINC(IP_STAT_TOOSHORT); |
goto bad; |
goto out; |
} |
} |
if (m->m_pkthdr.len > len) { |
if (m->m_pkthdr.len > len) { |
if (m->m_len == m->m_pkthdr.len) { |
if (m->m_len == m->m_pkthdr.len) { |
Line 528 ip_input(struct mbuf *m) |
|
Line 613 ip_input(struct mbuf *m) |
|
freed = pfil_run_hooks(inet_pfil_hook, &m, ifp, PFIL_IN) != 0; |
freed = pfil_run_hooks(inet_pfil_hook, &m, ifp, PFIL_IN) != 0; |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
if (freed || m == NULL) { |
if (freed || m == NULL) { |
return; |
goto out; |
} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
hlen = ip->ip_hl << 2; |
hlen = ip->ip_hl << 2; |
Line 557 ip_input(struct mbuf *m) |
|
Line 642 ip_input(struct mbuf *m) |
|
if ((*altq_input)(m, AF_INET) == 0) { |
if ((*altq_input)(m, AF_INET) == 0) { |
/* Packet dropped by traffic conditioner. */ |
/* Packet dropped by traffic conditioner. */ |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
return; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
} |
} |
Line 571 ip_input(struct mbuf *m) |
|
Line 656 ip_input(struct mbuf *m) |
|
*/ |
*/ |
ip_nhops = 0; /* for source routed packets */ |
ip_nhops = 0; /* for source routed packets */ |
if (hlen > sizeof (struct ip) && ip_dooptions(m)) |
if (hlen > sizeof (struct ip) && ip_dooptions(m)) |
return; |
goto out; |
|
|
/* |
|
* Enable a consistency check between the destination address |
|
* and the arrival interface for a unicast packet (the RFC 1122 |
|
* strong ES model) if IP forwarding is disabled and the packet |
|
* is not locally generated. |
|
* |
|
* XXX - Checking also should be disabled if the destination |
|
* address is ipnat'ed to a different interface. |
|
* |
|
* XXX - Checking is incompatible with IP aliases added |
|
* to the loopback interface instead of the interface where |
|
* the packets are received. |
|
* |
|
* XXX - We need to add a per ifaddr flag for this so that |
|
* we get finer grain control. |
|
*/ |
|
checkif = ip_checkinterface && (ipforwarding == 0) && |
|
(ifp->if_flags & IFF_LOOPBACK) == 0; |
|
|
|
/* |
/* |
* Check our list of addresses, to see if the packet is for us. |
* Check our list of addresses, to see if the packet is for us. |
Line 600 ip_input(struct mbuf *m) |
|
Line 666 ip_input(struct mbuf *m) |
|
* or IN_IFF_NOTREADY addresses as not mine. |
* or IN_IFF_NOTREADY addresses as not mine. |
*/ |
*/ |
downmatch = 0; |
downmatch = 0; |
LIST_FOREACH(ia, &IN_IFADDR_HASH(ip->ip_dst.s_addr), ia_hash) { |
ia = ip_match_our_address(ifp, ip, &downmatch); |
if (in_hosteq(ia->ia_addr.sin_addr, ip->ip_dst)) { |
|
if (ia->ia4_flags & IN_IFF_NOTREADY) |
|
continue; |
|
if (checkif && ia->ia_ifp != ifp) |
|
continue; |
|
if ((ia->ia_ifp->if_flags & IFF_UP) != 0) |
|
break; |
|
else |
|
downmatch++; |
|
} |
|
} |
|
if (ia != NULL) |
if (ia != NULL) |
goto ours; |
goto ours; |
|
|
if (ifp->if_flags & IFF_BROADCAST) { |
if (ifp->if_flags & IFF_BROADCAST) { |
IFADDR_FOREACH(ifa, ifp) { |
ia = ip_match_our_address_broadcast(ifp, ip); |
if (ifa->ifa_addr->sa_family != AF_INET) |
if (ia != NULL) |
continue; |
goto ours; |
ia = ifatoia(ifa); |
|
if (ia->ia4_flags & IN_IFF_NOTREADY) |
|
continue; |
|
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
|
in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
|
/* |
|
* Look for all-0's host part (old broadcast addr), |
|
* either for subnet or net. |
|
*/ |
|
ip->ip_dst.s_addr == ia->ia_subnet || |
|
ip->ip_dst.s_addr == ia->ia_net) |
|
goto ours; |
|
/* |
|
* An interface with IP address zero accepts |
|
* all packets that arrive on that interface. |
|
*/ |
|
if (in_nullhost(ia->ia_addr.sin_addr)) |
|
goto ours; |
|
} |
|
} |
} |
|
|
if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
#ifdef MROUTING |
#ifdef MROUTING |
extern struct socket *ip_mrouter; |
extern struct socket *ip_mrouter; |
Line 659 ip_input(struct mbuf *m) |
|
Line 697 ip_input(struct mbuf *m) |
|
if (ip_mforward(m, ifp) != 0) { |
if (ip_mforward(m, ifp) != 0) { |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
goto out; |
return; |
|
} |
} |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
|
|
Line 681 ip_input(struct mbuf *m) |
|
Line 718 ip_input(struct mbuf *m) |
|
*/ |
*/ |
if (!in_multi_group(ip->ip_dst, ifp, 0)) { |
if (!in_multi_group(ip->ip_dst, ifp, 0)) { |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
goto out; |
return; |
|
} |
} |
goto ours; |
goto ours; |
} |
} |
Line 694 ip_input(struct mbuf *m) |
|
Line 730 ip_input(struct mbuf *m) |
|
* Not for us; forward if possible and desirable. |
* Not for us; forward if possible and desirable. |
*/ |
*/ |
if (ipforwarding == 0) { |
if (ipforwarding == 0) { |
|
m_put_rcvif_psref(ifp, &psref); |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
m_freem(m); |
} else { |
} else { |
Line 704 ip_input(struct mbuf *m) |
|
Line 741 ip_input(struct mbuf *m) |
|
* forwarding loop till TTL goes to 0. |
* forwarding loop till TTL goes to 0. |
*/ |
*/ |
if (downmatch) { |
if (downmatch) { |
|
m_put_rcvif_psref(ifp, &psref); |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_HOST, 0, 0); |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_HOST, 0, 0); |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
return; |
return; |
Line 715 ip_input(struct mbuf *m) |
|
Line 753 ip_input(struct mbuf *m) |
|
if (ipsec4_input(m, IP_FORWARDING | |
if (ipsec4_input(m, IP_FORWARDING | |
(ip_directedbcast ? IP_ALLOWBROADCAST : 0)) != 0) { |
(ip_directedbcast ? IP_ALLOWBROADCAST : 0)) != 0) { |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
goto bad; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
} |
} |
#endif |
#endif |
ip_forward(m, srcrt); |
ip_forward(m, srcrt, ifp); |
|
m_put_rcvif_psref(ifp, &psref); |
} |
} |
return; |
return; |
|
|
ours: |
ours: |
|
m_put_rcvif_psref(ifp, &psref); |
|
ifp = NULL; |
|
|
/* |
/* |
* If offset or IP_MF are set, must reassemble. |
* If offset or IP_MF are set, must reassemble. |
*/ |
*/ |
|
|
*/ |
*/ |
if (ip_reass_packet(&m, ip) != 0) { |
if (ip_reass_packet(&m, ip) != 0) { |
/* Failed; invalid fragment(s) or packet. */ |
/* Failed; invalid fragment(s) or packet. */ |
goto bad; |
goto out; |
} |
} |
if (m == NULL) { |
if (m == NULL) { |
/* More fragments should come; silently return. */ |
/* More fragments should come; silently return. */ |
return; |
goto out; |
} |
} |
/* |
/* |
* Reassembly is done, we have the final packet. |
* Reassembly is done, we have the final packet. |
|
|
SOFTNET_LOCK(); |
SOFTNET_LOCK(); |
if (ipsec4_input(m, 0) != 0) { |
if (ipsec4_input(m, 0) != 0) { |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
goto bad; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
} |
} |
|
|
(*inetsw[ip_protox[nh]].pr_input)(m, off, nh); |
(*inetsw[ip_protox[nh]].pr_input)(m, off, nh); |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
return; |
return; |
bad: |
|
m_freem(m); |
|
return; |
|
|
|
badcsum: |
out: |
IP_STATINC(IP_STAT_BADSUM); |
m_put_rcvif_psref(ifp, &psref); |
m_freem(m); |
if (m != NULL) |
|
m_freem(m); |
} |
} |
|
|
/* |
/* |
Line 988 ip_dooptions(struct mbuf *m) |
|
Line 1028 ip_dooptions(struct mbuf *m) |
|
case IPOPT_TS_TSONLY: |
case IPOPT_TS_TSONLY: |
break; |
break; |
|
|
case IPOPT_TS_TSANDADDR: |
case IPOPT_TS_TSANDADDR: { |
|
struct ifnet *rcvif; |
|
int s; |
|
|
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
sizeof(struct in_addr) > ipt->ipt_len) { |
sizeof(struct in_addr) > ipt->ipt_len) { |
code = (u_char *)&ipt->ipt_ptr - |
code = (u_char *)&ipt->ipt_ptr - |
Line 996 ip_dooptions(struct mbuf *m) |
|
Line 1039 ip_dooptions(struct mbuf *m) |
|
goto bad; |
goto bad; |
} |
} |
ipaddr.sin_addr = dst; |
ipaddr.sin_addr = dst; |
|
rcvif = m_get_rcvif(m, &s); |
ia = ifatoia(ifaof_ifpforaddr(sintosa(&ipaddr), |
ia = ifatoia(ifaof_ifpforaddr(sintosa(&ipaddr), |
m->m_pkthdr.rcvif)); |
rcvif)); |
|
m_put_rcvif(rcvif, &s); |
if (ia == 0) |
if (ia == 0) |
continue; |
continue; |
bcopy(&ia->ia_addr.sin_addr, |
bcopy(&ia->ia_addr.sin_addr, |
cp0, sizeof(struct in_addr)); |
cp0, sizeof(struct in_addr)); |
ipt->ipt_ptr += sizeof(struct in_addr); |
ipt->ipt_ptr += sizeof(struct in_addr); |
break; |
break; |
|
} |
|
|
case IPOPT_TS_PRESPEC: |
case IPOPT_TS_PRESPEC: |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
Line 1034 ip_dooptions(struct mbuf *m) |
|
Line 1080 ip_dooptions(struct mbuf *m) |
|
} |
} |
} |
} |
if (forward) { |
if (forward) { |
|
struct ifnet *rcvif; |
|
struct psref psref; |
|
|
if (ip_forwsrcrt == 0) { |
if (ip_forwsrcrt == 0) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_SRCFAIL; |
code = ICMP_UNREACH_SRCFAIL; |
goto bad; |
goto bad; |
} |
} |
ip_forward(m, 1); |
|
|
rcvif = m_get_rcvif_psref(m, &psref); |
|
if (__predict_false(rcvif == NULL)) { |
|
type = ICMP_UNREACH; |
|
code = ICMP_UNREACH_HOST; |
|
goto bad; |
|
} |
|
ip_forward(m, 1, rcvif); |
|
m_put_rcvif_psref(rcvif, &psref); |
return true; |
return true; |
} |
} |
return false; |
return false; |
Line 1186 ip_drainstub(void) |
|
Line 1243 ip_drainstub(void) |
|
* via a source route. |
* via a source route. |
*/ |
*/ |
static void |
static void |
ip_forward(struct mbuf *m, int srcrt) |
ip_forward(struct mbuf *m, int srcrt, struct ifnet *rcvif) |
{ |
{ |
struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
struct rtentry *rt; |
struct rtentry *rt; |
Line 1254 ip_forward(struct mbuf *m, int srcrt) |
|
Line 1311 ip_forward(struct mbuf *m, int srcrt) |
|
* Also, don't send redirect if forwarding using a default route |
* Also, don't send redirect if forwarding using a default route |
* or a route modified by a redirect. |
* or a route modified by a redirect. |
*/ |
*/ |
if (rt->rt_ifp == m->m_pkthdr.rcvif && |
if (rt->rt_ifp == rcvif && |
(rt->rt_flags & (RTF_DYNAMIC|RTF_MODIFIED)) == 0 && |
(rt->rt_flags & (RTF_DYNAMIC|RTF_MODIFIED)) == 0 && |
!in_nullhost(satocsin(rt_getkey(rt))->sin_addr) && |
!in_nullhost(satocsin(rt_getkey(rt))->sin_addr) && |
ipsendredirects && !srcrt) { |
ipsendredirects && !srcrt) { |
Line 1360 ip_savecontrol(struct inpcb *inp, struct |
|
Line 1417 ip_savecontrol(struct inpcb *inp, struct |
|
struct mbuf *m) |
struct mbuf *m) |
{ |
{ |
struct socket *so = inp->inp_socket; |
struct socket *so = inp->inp_socket; |
ifnet_t *ifp = m->m_pkthdr.rcvif; |
ifnet_t *ifp; |
int inpflags = inp->inp_flags; |
int inpflags = inp->inp_flags; |
|
struct psref psref; |
|
|
|
ifp = m_get_rcvif_psref(m, &psref); |
|
if (__predict_false(ifp == NULL)) |
|
return; /* XXX should report error? */ |
|
|
if (so->so_options & SO_TIMESTAMP |
if (so->so_options & SO_TIMESTAMP |
#ifdef SO_OTIMESTAMP |
#ifdef SO_OTIMESTAMP |
Line 1423 ip_savecontrol(struct inpcb *inp, struct |
|
Line 1485 ip_savecontrol(struct inpcb *inp, struct |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
|
m_put_rcvif_psref(ifp, &psref); |
} |
} |
|
|
/* |
/* |