version 1.357, 2017/07/06 17:12:34 |
version 1.376.2.1, 2018/04/16 02:00:08 |
|
|
* SUCH DAMAGE. |
* SUCH DAMAGE. |
*/ |
*/ |
|
|
/*- |
/* |
* Copyright (c) 1998 The NetBSD Foundation, Inc. |
* Copyright (c) 1998 The NetBSD Foundation, Inc. |
* All rights reserved. |
* All rights reserved. |
* |
* |
Line 153 __KERNEL_RCSID(0, "$NetBSD$"); |
|
Line 153 __KERNEL_RCSID(0, "$NetBSD$"); |
|
#ifndef IPFORWARDING |
#ifndef IPFORWARDING |
#ifdef GATEWAY |
#ifdef GATEWAY |
#define IPFORWARDING 1 /* forward IP packets not for us */ |
#define IPFORWARDING 1 /* forward IP packets not for us */ |
#else /* GATEWAY */ |
#else |
#define IPFORWARDING 0 /* don't forward IP packets not for us */ |
#define IPFORWARDING 0 /* don't forward IP packets not for us */ |
#endif /* GATEWAY */ |
|
#endif /* IPFORWARDING */ |
|
#ifndef IPSENDREDIRECTS |
|
#define IPSENDREDIRECTS 1 |
|
#endif |
|
#ifndef IPFORWSRCRT |
|
#define IPFORWSRCRT 1 /* forward source-routed packets */ |
|
#endif |
#endif |
#ifndef IPALLOWSRCRT |
|
#define IPALLOWSRCRT 1 /* allow source-routed packets */ |
|
#endif |
|
#ifndef IPMTUDISC |
|
#define IPMTUDISC 1 |
|
#endif |
|
#ifndef IPMTUDISCTIMEOUT |
|
#define IPMTUDISCTIMEOUT (10 * 60) /* as per RFC 1191 */ |
|
#endif |
#endif |
|
|
/* |
#define IPMTUDISCTIMEOUT (10 * 60) /* as per RFC 1191 */ |
* Note: DIRECTED_BROADCAST is handled this way so that previous |
|
* configuration using this option will Just Work. |
|
*/ |
|
#ifndef IPDIRECTEDBCAST |
|
#ifdef DIRECTED_BROADCAST |
|
#define IPDIRECTEDBCAST 1 |
|
#else |
|
#define IPDIRECTEDBCAST 0 |
|
#endif /* DIRECTED_BROADCAST */ |
|
#endif /* IPDIRECTEDBCAST */ |
|
int ipforwarding = IPFORWARDING; |
|
int ipsendredirects = IPSENDREDIRECTS; |
|
int ip_defttl = IPDEFTTL; |
|
int ip_forwsrcrt = IPFORWSRCRT; |
|
int ip_directedbcast = IPDIRECTEDBCAST; |
|
int ip_allowsrcrt = IPALLOWSRCRT; |
|
int ip_mtudisc = IPMTUDISC; |
|
int ip_mtudisc_timeout = IPMTUDISCTIMEOUT; |
|
#ifdef DIAGNOSTIC |
|
int ipprintfs = 0; |
|
#endif |
|
|
|
int ip_do_randomid = 0; |
int ipforwarding = IPFORWARDING; |
|
int ipsendredirects = 1; |
|
int ip_defttl = IPDEFTTL; |
|
int ip_forwsrcrt = 0; |
|
int ip_directedbcast = 0; |
|
int ip_allowsrcrt = 0; |
|
int ip_mtudisc = 1; |
|
int ip_mtudisc_timeout = IPMTUDISCTIMEOUT; |
|
int ip_do_randomid = 0; |
|
|
/* |
/* |
* XXX - Setting ip_checkinterface mostly implements the receive side of |
* XXX - Setting ip_checkinterface mostly implements the receive side of |
|
|
#ifdef MBUFTRACE |
#ifdef MBUFTRACE |
MOWNER_ATTACH(&ip_tx_mowner); |
MOWNER_ATTACH(&ip_tx_mowner); |
MOWNER_ATTACH(&ip_rx_mowner); |
MOWNER_ATTACH(&ip_rx_mowner); |
#endif /* MBUFTRACE */ |
#endif |
|
|
ipstat_percpu = percpu_alloc(sizeof(uint64_t) * IP_NSTATS); |
ipstat_percpu = percpu_alloc(sizeof(uint64_t) * IP_NSTATS); |
ipforward_rt_percpu = percpu_alloc(sizeof(struct route)); |
ipforward_rt_percpu = percpu_alloc(sizeof(struct route)); |
Line 371 ip_match_our_address(struct ifnet *ifp, |
|
Line 343 ip_match_our_address(struct ifnet *ifp, |
|
continue; |
continue; |
if (checkif && ia->ia_ifp != ifp) |
if (checkif && ia->ia_ifp != ifp) |
continue; |
continue; |
if ((ia->ia_ifp->if_flags & IFF_UP) != 0 && |
if ((ia->ia_ifp->if_flags & IFF_UP) == 0) { |
(ia->ia4_flags & IN_IFF_DETACHED) == 0) |
|
break; |
|
else |
|
(*downmatch)++; |
(*downmatch)++; |
|
continue; |
|
} |
|
if (ia->ia4_flags & IN_IFF_DETACHED && |
|
(ifp->if_flags & IFF_LOOPBACK) == 0) |
|
continue; |
|
break; |
} |
} |
} |
} |
|
|
Line 392 ip_match_our_address_broadcast(struct if |
|
Line 367 ip_match_our_address_broadcast(struct if |
|
if (ifa->ifa_addr->sa_family != AF_INET) |
if (ifa->ifa_addr->sa_family != AF_INET) |
continue; |
continue; |
ia = ifatoia(ifa); |
ia = ifatoia(ifa); |
if (ia->ia4_flags & (IN_IFF_NOTREADY | IN_IFF_DETACHED)) |
if (ia->ia4_flags & IN_IFF_NOTREADY) |
|
continue; |
|
if (ia->ia4_flags & IN_IFF_DETACHED && |
|
(ifp->if_flags & IFF_LOOPBACK) == 0) |
continue; |
continue; |
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
Line 426 ipintr(void *arg __unused) |
|
Line 404 ipintr(void *arg __unused) |
|
|
|
KASSERT(cpu_softintr_p()); |
KASSERT(cpu_softintr_p()); |
|
|
#ifndef NET_MPSAFE |
SOFTNET_KERNEL_LOCK_UNLESS_NET_MPSAFE(); |
mutex_enter(softnet_lock); |
|
#endif |
|
while ((m = pktq_dequeue(ip_pktq)) != NULL) { |
while ((m = pktq_dequeue(ip_pktq)) != NULL) { |
ip_input(m); |
ip_input(m); |
} |
} |
#ifndef NET_MPSAFE |
SOFTNET_KERNEL_UNLOCK_UNLESS_NET_MPSAFE(); |
mutex_exit(softnet_lock); |
|
#endif |
|
} |
} |
|
|
/* |
/* |
Line 480 ip_input(struct mbuf *m) |
|
Line 454 ip_input(struct mbuf *m) |
|
*/ |
*/ |
if (IP_HDR_ALIGNED_P(mtod(m, void *)) == 0) { |
if (IP_HDR_ALIGNED_P(mtod(m, void *)) == 0) { |
if ((m = m_copyup(m, sizeof(struct ip), |
if ((m = m_copyup(m, sizeof(struct ip), |
(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); |
goto out; |
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); |
goto out; |
goto out; |
} |
} |
Line 528 ip_input(struct mbuf *m) |
|
Line 502 ip_input(struct mbuf *m) |
|
} |
} |
|
|
switch (m->m_pkthdr.csum_flags & |
switch (m->m_pkthdr.csum_flags & |
((ifp->if_csum_flags_rx & M_CSUM_IPv4) | |
((ifp->if_csum_flags_rx & M_CSUM_IPv4) | 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); |
IP_STATINC(IP_STAT_BADSUM); |
IP_STATINC(IP_STAT_BADSUM); |
Line 568 ip_input(struct mbuf *m) |
|
Line 541 ip_input(struct mbuf *m) |
|
} |
} |
|
|
/* |
/* |
* Check that the amount of data in the buffers |
* Check that the amount of data in the buffers is at least as much |
* is as at least much as the IP header would have us expect. |
* as the IP header would have us expect. Trim mbufs if longer than |
* Trim mbufs if longer than we expect. |
* we expect. Drop packet if shorter than we expect. |
* Drop packet if shorter than we expect. |
|
*/ |
*/ |
if (m->m_pkthdr.len < len) { |
if (m->m_pkthdr.len < len) { |
IP_STATINC(IP_STAT_TOOSHORT); |
IP_STATINC(IP_STAT_TOOSHORT); |
Line 597 ip_input(struct mbuf *m) |
|
Line 569 ip_input(struct mbuf *m) |
|
* not fast-forwarded, they must clear the M_CANFASTFWD flag. |
* not fast-forwarded, they must clear the M_CANFASTFWD flag. |
* Note that filters must _never_ set this flag, as another filter |
* Note that filters must _never_ set this flag, as another filter |
* in the list may have previously cleared it. |
* in the list may have previously cleared it. |
|
* |
|
* Don't call hooks if the packet has already been processed by |
|
* IPsec (encapsulated, tunnel mode). |
*/ |
*/ |
#if defined(IPSEC) |
#if defined(IPSEC) |
if (!ipsec_used || !ipsec_indone(m)) |
if (!ipsec_used || !ipsec_indone(m)) |
Line 620 ip_input(struct mbuf *m) |
|
Line 595 ip_input(struct mbuf *m) |
|
* from generating ICMP redirects for packets that have |
* from generating ICMP redirects for packets that have |
* been redirected by a hook back out on to the same LAN that |
* been redirected by a hook back out on to the same LAN that |
* they came from and is not an indication that the packet |
* they came from and is not an indication that the packet |
* is being inffluenced by source routing options. This |
* is being influenced by source routing options. This |
* allows things like |
* allows things like |
* "rdr tlp0 0/0 port 80 -> 1.1.1.200 3128 tcp" |
* "rdr tlp0 0/0 port 80 -> 1.1.1.200 3128 tcp" |
* where tlp0 is both on the 1.1.1.0/24 network and is the |
* where tlp0 is both on the 1.1.1.0/24 network and is the |
Line 652 ip_input(struct mbuf *m) |
|
Line 627 ip_input(struct mbuf *m) |
|
* error was detected (causing an icmp message |
* error was detected (causing an icmp message |
* to be sent and the original packet to be freed). |
* to be sent and the original packet to be freed). |
*/ |
*/ |
if (hlen > sizeof (struct ip) && ip_dooptions(m)) { |
if (hlen > sizeof(struct ip) && ip_dooptions(m)) { |
m = NULL; |
m = NULL; |
goto out; |
goto out; |
} |
} |
Line 752 ip_input(struct mbuf *m) |
|
Line 727 ip_input(struct mbuf *m) |
|
return; |
return; |
} |
} |
#ifdef IPSEC |
#ifdef IPSEC |
/* Perform IPsec, if any. */ |
/* Check the security policy (SP) for the packet */ |
if (ipsec_used) { |
if (ipsec_used) { |
SOFTNET_LOCK(); |
if (ipsec4_input(m, IP_FORWARDING) != 0) { |
if (ipsec4_input(m, IP_FORWARDING | |
|
(ip_directedbcast ? IP_ALLOWBROADCAST : 0)) != 0) { |
|
SOFTNET_UNLOCK(); |
|
goto out; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
|
} |
} |
#endif |
#endif |
ip_forward(m, srcrt, ifp); |
ip_forward(m, srcrt, ifp); |
|
|
} |
} |
/* |
/* |
* Reassembly is done, we have the final packet. |
* Reassembly is done, we have the final packet. |
* Updated cached data in local variable(s). |
* Update cached data in local variable(s). |
*/ |
*/ |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
hlen = ip->ip_hl << 2; |
hlen = ip->ip_hl << 2; |
} |
} |
|
|
|
M_VERIFY_PACKET(m); |
|
|
#ifdef IPSEC |
#ifdef IPSEC |
/* |
/* |
* Enforce IPsec policy checking if we are seeing last header. |
* Enforce IPsec policy checking if we are seeing last header. |
|
|
*/ |
*/ |
if (ipsec_used && |
if (ipsec_used && |
(inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0) { |
(inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0) { |
SOFTNET_LOCK(); |
|
if (ipsec4_input(m, 0) != 0) { |
if (ipsec4_input(m, 0) != 0) { |
SOFTNET_UNLOCK(); |
|
goto out; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
|
} |
} |
#endif |
#endif |
|
|
|
|
* Switch out to protocol's input routine. |
* Switch out to protocol's input routine. |
*/ |
*/ |
#if IFA_STATS |
#if IFA_STATS |
if (ia && ip) { |
if (ia) { |
struct in_ifaddr *_ia; |
struct in_ifaddr *_ia; |
/* |
/* |
* Keep a reference from ip_match_our_address with psref |
* Keep a reference from ip_match_our_address with psref |
|
|
|
|
const int off = hlen, nh = ip->ip_p; |
const int off = hlen, nh = ip->ip_p; |
|
|
SOFTNET_LOCK(); |
|
(*inetsw[ip_protox[nh]].pr_input)(m, off, nh); |
(*inetsw[ip_protox[nh]].pr_input)(m, off, nh); |
SOFTNET_UNLOCK(); |
|
return; |
return; |
|
|
out: |
out: |
|
|
ip_slowtimo(void) |
ip_slowtimo(void) |
{ |
{ |
|
|
#ifndef NET_MPSAFE |
SOFTNET_KERNEL_LOCK_UNLESS_NET_MPSAFE(); |
mutex_enter(softnet_lock); |
|
KERNEL_LOCK(1, NULL); |
|
#endif |
|
|
|
ip_reass_slowtimo(); |
ip_reass_slowtimo(); |
|
|
#ifndef NET_MPSAFE |
SOFTNET_KERNEL_UNLOCK_UNLESS_NET_MPSAFE(); |
KERNEL_UNLOCK_ONE(NULL); |
|
mutex_exit(softnet_lock); |
|
#endif |
|
} |
} |
|
|
/* |
/* |
Line 890 ip_dooptions(struct mbuf *m) |
|
Line 852 ip_dooptions(struct mbuf *m) |
|
struct ip_timestamp *ipt; |
struct ip_timestamp *ipt; |
struct in_ifaddr *ia; |
struct in_ifaddr *ia; |
int opt, optlen, cnt, off, code, type = ICMP_PARAMPROB, forward = 0; |
int opt, optlen, cnt, off, code, type = ICMP_PARAMPROB, forward = 0; |
|
int srr_present, rr_present, ts_present; |
struct in_addr dst; |
struct in_addr dst; |
n_time ntime; |
n_time ntime; |
struct ifaddr *ifa = NULL; |
struct ifaddr *ifa = NULL; |
int s; |
int s; |
|
|
|
srr_present = 0; |
|
rr_present = 0; |
|
ts_present = 0; |
|
|
dst = ip->ip_dst; |
dst = ip->ip_dst; |
cp = (u_char *)(ip + 1); |
cp = (u_char *)(ip + 1); |
cnt = (ip->ip_hl << 2) - sizeof (struct ip); |
cnt = (ip->ip_hl << 2) - sizeof(struct ip); |
for (; cnt > 0; cnt -= optlen, cp += optlen) { |
for (; cnt > 0; cnt -= optlen, cp += optlen) { |
opt = cp[IPOPT_OPTVAL]; |
opt = cp[IPOPT_OPTVAL]; |
if (opt == IPOPT_EOL) |
if (opt == IPOPT_EOL) |
Line 942 ip_dooptions(struct mbuf *m) |
|
Line 909 ip_dooptions(struct mbuf *m) |
|
code = ICMP_UNREACH_NET_PROHIB; |
code = ICMP_UNREACH_NET_PROHIB; |
goto bad; |
goto bad; |
} |
} |
|
if (srr_present++) { |
|
code = &cp[IPOPT_OPTVAL] - (u_char *)ip; |
|
goto bad; |
|
} |
if (optlen < IPOPT_OFFSET + sizeof(*cp)) { |
if (optlen < IPOPT_OFFSET + sizeof(*cp)) { |
code = &cp[IPOPT_OLEN] - (u_char *)ip; |
code = &cp[IPOPT_OLEN] - (u_char *)ip; |
goto bad; |
goto bad; |
Line 998 ip_dooptions(struct mbuf *m) |
|
Line 969 ip_dooptions(struct mbuf *m) |
|
goto bad; |
goto bad; |
} |
} |
ip->ip_dst = ipaddr.sin_addr; |
ip->ip_dst = ipaddr.sin_addr; |
bcopy((void *)&ia->ia_addr.sin_addr, |
memcpy(cp + off, &ia->ia_addr.sin_addr, |
(void *)(cp + off), sizeof(struct in_addr)); |
sizeof(struct in_addr)); |
ia4_release(ia, &psref); |
ia4_release(ia, &psref); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
/* |
/* |
Line 1016 ip_dooptions(struct mbuf *m) |
|
Line 987 ip_dooptions(struct mbuf *m) |
|
.sin_family = AF_INET, |
.sin_family = AF_INET, |
}; |
}; |
|
|
|
if (rr_present++) { |
|
code = &cp[IPOPT_OPTVAL] - (u_char *)ip; |
|
goto bad; |
|
} |
if (optlen < IPOPT_OFFSET + sizeof(*cp)) { |
if (optlen < IPOPT_OFFSET + sizeof(*cp)) { |
code = &cp[IPOPT_OLEN] - (u_char *)ip; |
code = &cp[IPOPT_OLEN] - (u_char *)ip; |
goto bad; |
goto bad; |
Line 1030 ip_dooptions(struct mbuf *m) |
|
Line 1005 ip_dooptions(struct mbuf *m) |
|
off--; /* 0 origin */ |
off--; /* 0 origin */ |
if ((off + sizeof(struct in_addr)) > optlen) |
if ((off + sizeof(struct in_addr)) > optlen) |
break; |
break; |
memcpy((void *)&ipaddr.sin_addr, (void *)(&ip->ip_dst), |
memcpy((void *)&ipaddr.sin_addr, (void *)&ip->ip_dst, |
sizeof(ipaddr.sin_addr)); |
sizeof(ipaddr.sin_addr)); |
/* |
/* |
* locate outgoing interface; if we're the destination, |
* locate outgoing interface; if we're the destination, |
Line 1047 ip_dooptions(struct mbuf *m) |
|
Line 1022 ip_dooptions(struct mbuf *m) |
|
} else { |
} else { |
ia = ifatoia(ifa); |
ia = ifatoia(ifa); |
} |
} |
bcopy((void *)&ia->ia_addr.sin_addr, |
memcpy(cp + off, &ia->ia_addr.sin_addr, |
(void *)(cp + off), sizeof(struct in_addr)); |
sizeof(struct in_addr)); |
ia4_release(ia, &psref); |
ia4_release(ia, &psref); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
break; |
break; |
Line 1057 ip_dooptions(struct mbuf *m) |
|
Line 1032 ip_dooptions(struct mbuf *m) |
|
case IPOPT_TS: |
case IPOPT_TS: |
code = cp - (u_char *)ip; |
code = cp - (u_char *)ip; |
ipt = (struct ip_timestamp *)cp; |
ipt = (struct ip_timestamp *)cp; |
|
if (ts_present++) { |
|
code = &cp[IPOPT_OPTVAL] - (u_char *)ip; |
|
goto bad; |
|
} |
if (ipt->ipt_len < 4 || ipt->ipt_len > 40) { |
if (ipt->ipt_len < 4 || ipt->ipt_len > 40) { |
code = (u_char *)&ipt->ipt_len - (u_char *)ip; |
code = (u_char *)&ipt->ipt_len - (u_char *)ip; |
goto bad; |
goto bad; |
Line 1065 ip_dooptions(struct mbuf *m) |
|
Line 1044 ip_dooptions(struct mbuf *m) |
|
code = (u_char *)&ipt->ipt_ptr - (u_char *)ip; |
code = (u_char *)&ipt->ipt_ptr - (u_char *)ip; |
goto bad; |
goto bad; |
} |
} |
if (ipt->ipt_ptr > ipt->ipt_len - sizeof (int32_t)) { |
if (ipt->ipt_ptr > ipt->ipt_len - sizeof(int32_t)) { |
if (++ipt->ipt_oflw == 0) { |
if (++ipt->ipt_oflw == 0) { |
code = (u_char *)&ipt->ipt_ptr - |
code = (u_char *)&ipt->ipt_ptr - |
(u_char *)ip; |
(u_char *)ip; |
Line 1106 ip_dooptions(struct mbuf *m) |
|
Line 1085 ip_dooptions(struct mbuf *m) |
|
break; |
break; |
} |
} |
ia = ifatoia(ifa); |
ia = ifatoia(ifa); |
bcopy(&ia->ia_addr.sin_addr, |
memcpy(cp0, &ia->ia_addr.sin_addr, |
cp0, sizeof(struct in_addr)); |
sizeof(struct in_addr)); |
pserialize_read_exit(_ss); |
pserialize_read_exit(_ss); |
ipt->ipt_ptr += sizeof(struct in_addr); |
ipt->ipt_ptr += sizeof(struct in_addr); |
break; |
break; |
|
|
/* |
/* |
* Do not generate ICMP_SOURCEQUENCH as required in RFC 1812, |
* Do not generate ICMP_SOURCEQUENCH as required in RFC 1812, |
* Requirements for IP Version 4 Routers. Source quench can |
* Requirements for IP Version 4 Routers. Source quench can |
* big problem under DoS attacks or if the underlying |
* be a big problem under DoS attacks or if the underlying |
* interface is rate-limited. |
* interface is rate-limited. |
*/ |
*/ |
if (mcopy) |
if (mcopy) |
Line 1515 ip_savecontrol(struct inpcb *inp, struct |
|
Line 1494 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; |
|
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 (SOOPT_TIMESTAMP(so->so_options)) |
if (SOOPT_TIMESTAMP(so->so_options)) |
mp = sbsavetimestamp(so->so_options, m, mp); |
mp = sbsavetimestamp(so->so_options, m, mp); |
Line 1532 ip_savecontrol(struct inpcb *inp, struct |
|
Line 1505 ip_savecontrol(struct inpcb *inp, struct |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
if (inpflags & INP_RECVPKTINFO) { |
|
struct in_pktinfo ipi; |
if (inpflags & INP_RECVTTL) { |
ipi.ipi_addr = ip->ip_src; |
*mp = sbcreatecontrol(&ip->ip_ttl, |
ipi.ipi_ifindex = ifp->if_index; |
sizeof(uint8_t), IP_RECVTTL, IPPROTO_IP); |
*mp = sbcreatecontrol(&ipi, |
|
sizeof(ipi), IP_RECVPKTINFO, IPPROTO_IP); |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
if (inpflags & INP_PKTINFO) { |
|
|
struct psref psref; |
|
ifnet_t *ifp = m_get_rcvif_psref(m, &psref); |
|
if (__predict_false(ifp == NULL)) { |
|
#ifdef DIAGNOSTIC |
|
printf("%s: missing receive interface\n", __func__); |
|
#endif |
|
return; /* XXX should report error? */ |
|
} |
|
|
|
if (inpflags & INP_RECVPKTINFO) { |
struct in_pktinfo ipi; |
struct in_pktinfo ipi; |
ipi.ipi_addr = ip->ip_dst; |
ipi.ipi_addr = ip->ip_dst; |
ipi.ipi_ifindex = ifp->if_index; |
ipi.ipi_ifindex = ifp->if_index; |
Line 1559 ip_savecontrol(struct inpcb *inp, struct |
|
Line 1540 ip_savecontrol(struct inpcb *inp, struct |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
if (inpflags & INP_RECVTTL) { |
|
*mp = sbcreatecontrol(&ip->ip_ttl, |
|
sizeof(uint8_t), IP_RECVTTL, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
m_put_rcvif_psref(ifp, &psref); |
m_put_rcvif_psref(ifp, &psref); |
} |
} |
|
|
Line 1669 sysctl_net_inet_ip_setup(struct sysctllo |
|
Line 1644 sysctl_net_inet_ip_setup(struct sysctllo |
|
NULL, 0, &ip_defttl, 0, |
NULL, 0, &ip_defttl, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_DEFTTL, CTL_EOL); |
IPCTL_DEFTTL, CTL_EOL); |
#ifdef IPCTL_DEFMTU |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT /* |CTLFLAG_READWRITE? */, |
|
CTLTYPE_INT, "mtu", |
|
SYSCTL_DESCR("Default MTA for an INET route"), |
|
NULL, 0, &ip_mtu, 0, |
|
CTL_NET, PF_INET, IPPROTO_IP, |
|
IPCTL_DEFMTU, CTL_EOL); |
|
#endif /* IPCTL_DEFMTU */ |
|
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "forwsrcrt", |
CTLTYPE_INT, "forwsrcrt", |