version 1.319.4.9, 2017/02/05 13:40:59 |
version 1.376.2.1, 2018/04/16 02:00:08 |
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* SUCH DAMAGE. |
* SUCH DAMAGE. |
*/ |
*/ |
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/*- |
/* |
* Copyright (c) 1998 The NetBSD Foundation, Inc. |
* Copyright (c) 1998 The NetBSD Foundation, Inc. |
* All rights reserved. |
* All rights reserved. |
* |
* |
Line 95 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 95 __KERNEL_RCSID(0, "$NetBSD$"); |
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#ifdef _KERNEL_OPT |
#ifdef _KERNEL_OPT |
#include "opt_inet.h" |
#include "opt_inet.h" |
#include "opt_compat_netbsd.h" |
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#include "opt_gateway.h" |
#include "opt_gateway.h" |
#include "opt_ipsec.h" |
#include "opt_ipsec.h" |
#include "opt_mrouting.h" |
#include "opt_mrouting.h" |
Line 154 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 153 __KERNEL_RCSID(0, "$NetBSD$"); |
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#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 */ |
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#endif /* IPFORWARDING */ |
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#ifndef IPSENDREDIRECTS |
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#define IPSENDREDIRECTS 1 |
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#endif |
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#ifndef IPFORWSRCRT |
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#define IPFORWSRCRT 1 /* forward source-routed packets */ |
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#endif |
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#ifndef IPALLOWSRCRT |
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#define IPALLOWSRCRT 1 /* allow source-routed packets */ |
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#endif |
#endif |
#ifndef IPMTUDISC |
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#define IPMTUDISC 1 |
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#endif |
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#ifndef IPMTUDISCTIMEOUT |
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#define IPMTUDISCTIMEOUT (10 * 60) /* as per RFC 1191 */ |
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#endif |
#endif |
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#ifdef COMPAT_50 |
#define IPMTUDISCTIMEOUT (10 * 60) /* as per RFC 1191 */ |
#include <compat/sys/time.h> |
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#include <compat/sys/socket.h> |
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#endif |
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/* |
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* Note: DIRECTED_BROADCAST is handled this way so that previous |
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* configuration using this option will Just Work. |
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*/ |
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#ifndef IPDIRECTEDBCAST |
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#ifdef DIRECTED_BROADCAST |
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#define IPDIRECTEDBCAST 1 |
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#else |
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#define IPDIRECTEDBCAST 0 |
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#endif /* DIRECTED_BROADCAST */ |
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#endif /* IPDIRECTEDBCAST */ |
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int ipforwarding = IPFORWARDING; |
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int ipsendredirects = IPSENDREDIRECTS; |
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int ip_defttl = IPDEFTTL; |
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int ip_forwsrcrt = IPFORWSRCRT; |
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int ip_directedbcast = IPDIRECTEDBCAST; |
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int ip_allowsrcrt = IPALLOWSRCRT; |
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int ip_mtudisc = IPMTUDISC; |
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int ip_mtudisc_timeout = IPMTUDISCTIMEOUT; |
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#ifdef DIAGNOSTIC |
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int ipprintfs = 0; |
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#endif |
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int ip_do_randomid = 0; |
int ipforwarding = IPFORWARDING; |
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int ipsendredirects = 1; |
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int ip_defttl = IPDEFTTL; |
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int ip_forwsrcrt = 0; |
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int ip_directedbcast = 0; |
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int ip_allowsrcrt = 0; |
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int ip_mtudisc = 1; |
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int ip_mtudisc_timeout = IPMTUDISCTIMEOUT; |
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int ip_do_randomid = 0; |
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/* |
/* |
* XXX - Setting ip_checkinterface mostly implements the receive side of |
* XXX - Setting ip_checkinterface mostly implements the receive side of |
Line 253 EVCNT_ATTACH_STATIC(ip_swcsum); |
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Line 219 EVCNT_ATTACH_STATIC(ip_swcsum); |
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#endif /* INET_CSUM_COUNTERS */ |
#endif /* INET_CSUM_COUNTERS */ |
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/* |
/* |
* We need to save the IP options in case a protocol wants to respond |
* Used to save the IP options in case a protocol wants to respond |
* to an incoming packet over the same route if the packet got here |
* to an incoming packet over the same route if the packet got here |
* using IP source routing. This allows connection establishment and |
* using IP source routing. This allows connection establishment and |
* maintenance when the remote end is on a network that is not known |
* maintenance when the remote end is on a network that is not known |
* to us. |
* to us. |
*/ |
*/ |
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struct ip_srcrt { |
static int ip_nhops = 0; |
int isr_nhops; /* number of hops */ |
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struct in_addr isr_dst; /* final destination */ |
static struct ip_srcrt { |
char isr_nop; /* one NOP to align */ |
struct in_addr dst; /* final destination */ |
char isr_hdr[IPOPT_OFFSET + 1]; /* OPTVAL, OLEN & OFFSET */ |
char nop; /* one NOP to align */ |
struct in_addr isr_routes[MAX_IPOPTLEN/sizeof(struct in_addr)]; |
char srcopt[IPOPT_OFFSET + 1]; /* OPTVAL, OLEN and OFFSET */ |
}; |
struct in_addr route[MAX_IPOPTLEN/sizeof(struct in_addr)]; |
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} ip_srcrt; |
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static int ip_drainwanted; |
static int ip_drainwanted; |
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struct sockaddr_in ipaddr = { |
static void save_rte(struct mbuf *, u_char *, struct in_addr); |
.sin_len = sizeof(ipaddr), |
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.sin_family = AF_INET, |
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}; |
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static void save_rte(u_char *, struct in_addr); |
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#ifdef MBUFTRACE |
#ifdef MBUFTRACE |
struct mowner ip_rx_mowner = MOWNER_INIT("internet", "rx"); |
struct mowner ip_rx_mowner = MOWNER_INIT("internet", "rx"); |
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#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 |
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ipstat_percpu = percpu_alloc(sizeof(uint64_t) * IP_NSTATS); |
ipstat_percpu = percpu_alloc(sizeof(uint64_t) * IP_NSTATS); |
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ipforward_rt_percpu = percpu_alloc(sizeof(struct route)); |
ipforward_rt_percpu = percpu_alloc(sizeof(struct route)); |
if (ipforward_rt_percpu == NULL) |
ip_mtudisc_timeout_q = rt_timer_queue_create(ip_mtudisc_timeout); |
panic("failed to allocate ipforward_rt_percpu"); |
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} |
} |
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static struct in_ifaddr * |
static struct in_ifaddr * |
Line 386 ip_match_our_address(struct ifnet *ifp, |
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Line 343 ip_match_our_address(struct ifnet *ifp, |
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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) |
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break; |
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else |
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(*downmatch)++; |
(*downmatch)++; |
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continue; |
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} |
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if (ia->ia4_flags & IN_IFF_DETACHED && |
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(ifp->if_flags & IFF_LOOPBACK) == 0) |
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continue; |
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break; |
} |
} |
} |
} |
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Line 407 ip_match_our_address_broadcast(struct if |
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Line 367 ip_match_our_address_broadcast(struct if |
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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) |
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continue; |
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if (ia->ia4_flags & IN_IFF_DETACHED && |
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(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 441 ipintr(void *arg __unused) |
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Line 404 ipintr(void *arg __unused) |
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KASSERT(cpu_softintr_p()); |
KASSERT(cpu_softintr_p()); |
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#ifndef NET_MPSAFE |
SOFTNET_KERNEL_LOCK_UNLESS_NET_MPSAFE(); |
mutex_enter(softnet_lock); |
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#endif |
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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); |
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#endif |
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} |
} |
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/* |
/* |
Line 495 ip_input(struct mbuf *m) |
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Line 454 ip_input(struct mbuf *m) |
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*/ |
*/ |
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 543 ip_input(struct mbuf *m) |
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Line 502 ip_input(struct mbuf *m) |
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} |
} |
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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)) { |
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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 583 ip_input(struct mbuf *m) |
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Line 541 ip_input(struct mbuf *m) |
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} |
} |
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/* |
/* |
* 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 612 ip_input(struct mbuf *m) |
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Line 569 ip_input(struct mbuf *m) |
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* 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. |
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* |
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* Don't call hooks if the packet has already been processed by |
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* IPsec (encapsulated, tunnel mode). |
*/ |
*/ |
#if defined(IPSEC) |
#if defined(IPSEC) |
if (!ipsec_used || !ipsec_indone(m)) |
if (!ipsec_used || !ipsec_indone(m)) |
Line 635 ip_input(struct mbuf *m) |
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Line 595 ip_input(struct mbuf *m) |
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* 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 667 ip_input(struct mbuf *m) |
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Line 627 ip_input(struct mbuf *m) |
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* 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). |
*/ |
*/ |
ip_nhops = 0; /* for source routed packets */ |
if (hlen > sizeof(struct ip) && ip_dooptions(m)) { |
if (hlen > sizeof (struct ip) && ip_dooptions(m)) { |
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m = NULL; |
m = NULL; |
goto out; |
goto out; |
} |
} |
Line 768 ip_input(struct mbuf *m) |
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Line 727 ip_input(struct mbuf *m) |
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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 | |
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(ip_directedbcast ? IP_ALLOWBROADCAST : 0)) != 0) { |
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SOFTNET_UNLOCK(); |
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goto out; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
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} |
} |
#endif |
#endif |
ip_forward(m, srcrt, ifp); |
ip_forward(m, srcrt, ifp); |
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} |
} |
/* |
/* |
* 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; |
} |
} |
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M_VERIFY_PACKET(m); |
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#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(); |
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if (ipsec4_input(m, 0) != 0) { |
if (ipsec4_input(m, 0) != 0) { |
SOFTNET_UNLOCK(); |
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goto out; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
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} |
} |
#endif |
#endif |
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|
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* 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 |
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|
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const int off = hlen, nh = ip->ip_p; |
const int off = hlen, nh = ip->ip_p; |
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SOFTNET_LOCK(); |
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(*inetsw[ip_protox[nh]].pr_input)(m, off, nh); |
(*inetsw[ip_protox[nh]].pr_input)(m, off, nh); |
SOFTNET_UNLOCK(); |
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return; |
return; |
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out: |
out: |
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ip_slowtimo(void) |
ip_slowtimo(void) |
{ |
{ |
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#ifndef NET_MPSAFE |
SOFTNET_KERNEL_LOCK_UNLESS_NET_MPSAFE(); |
mutex_enter(softnet_lock); |
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KERNEL_LOCK(1, NULL); |
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#endif |
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ip_reass_slowtimo(); |
ip_reass_slowtimo(); |
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#ifndef NET_MPSAFE |
SOFTNET_KERNEL_UNLOCK_UNLESS_NET_MPSAFE(); |
KERNEL_UNLOCK_ONE(NULL); |
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mutex_exit(softnet_lock); |
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#endif |
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} |
} |
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/* |
/* |
Line 906 ip_dooptions(struct mbuf *m) |
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Line 852 ip_dooptions(struct mbuf *m) |
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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; |
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int srr_present, rr_present, ts_present; |
struct in_addr dst; |
struct in_addr dst; |
n_time ntime; |
n_time ntime; |
struct ifaddr *ifa; |
struct ifaddr *ifa = NULL; |
int s; |
int s; |
|
|
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srr_present = 0; |
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rr_present = 0; |
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ts_present = 0; |
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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 948 ip_dooptions(struct mbuf *m) |
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Line 899 ip_dooptions(struct mbuf *m) |
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case IPOPT_LSRR: |
case IPOPT_LSRR: |
case IPOPT_SSRR: { |
case IPOPT_SSRR: { |
struct psref psref; |
struct psref psref; |
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struct sockaddr_in ipaddr = { |
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.sin_len = sizeof(ipaddr), |
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.sin_family = AF_INET, |
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}; |
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if (ip_allowsrcrt == 0) { |
if (ip_allowsrcrt == 0) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_NET_PROHIB; |
code = ICMP_UNREACH_NET_PROHIB; |
goto bad; |
goto bad; |
} |
} |
|
if (srr_present++) { |
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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 985 ip_dooptions(struct mbuf *m) |
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Line 945 ip_dooptions(struct mbuf *m) |
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/* |
/* |
* End of source route. Should be for us. |
* End of source route. Should be for us. |
*/ |
*/ |
save_rte(cp, ip->ip_src); |
save_rte(m, cp, ip->ip_src); |
break; |
break; |
} |
} |
/* |
/* |
Line 1009 ip_dooptions(struct mbuf *m) |
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Line 969 ip_dooptions(struct mbuf *m) |
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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 1022 ip_dooptions(struct mbuf *m) |
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Line 982 ip_dooptions(struct mbuf *m) |
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|
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case IPOPT_RR: { |
case IPOPT_RR: { |
struct psref psref; |
struct psref psref; |
|
struct sockaddr_in ipaddr = { |
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.sin_len = sizeof(ipaddr), |
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.sin_family = AF_INET, |
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}; |
|
|
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if (rr_present++) { |
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code = &cp[IPOPT_OPTVAL] - (u_char *)ip; |
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goto bad; |
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} |
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 1036 ip_dooptions(struct mbuf *m) |
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Line 1005 ip_dooptions(struct mbuf *m) |
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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 1053 ip_dooptions(struct mbuf *m) |
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Line 1022 ip_dooptions(struct mbuf *m) |
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} 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 1063 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 1071 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 1088 ip_dooptions(struct mbuf *m) |
|
Line 1061 ip_dooptions(struct mbuf *m) |
|
case IPOPT_TS_TSANDADDR: { |
case IPOPT_TS_TSANDADDR: { |
struct ifnet *rcvif; |
struct ifnet *rcvif; |
int _s, _ss; |
int _s, _ss; |
|
struct sockaddr_in ipaddr = { |
|
.sin_len = sizeof(ipaddr), |
|
.sin_family = AF_INET, |
|
}; |
|
|
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) { |
Line 1098 ip_dooptions(struct mbuf *m) |
|
Line 1075 ip_dooptions(struct mbuf *m) |
|
ipaddr.sin_addr = dst; |
ipaddr.sin_addr = dst; |
_ss = pserialize_read_enter(); |
_ss = pserialize_read_enter(); |
rcvif = m_get_rcvif(m, &_s); |
rcvif = m_get_rcvif(m, &_s); |
ifa = ifaof_ifpforaddr(sintosa(&ipaddr), rcvif); |
if (__predict_true(rcvif != NULL)) { |
|
ifa = ifaof_ifpforaddr(sintosa(&ipaddr), |
|
rcvif); |
|
} |
m_put_rcvif(rcvif, &_s); |
m_put_rcvif(rcvif, &_s); |
if (ifa == NULL) { |
if (ifa == NULL) { |
pserialize_read_exit(_ss); |
pserialize_read_exit(_ss); |
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; |
} |
} |
|
|
case IPOPT_TS_PRESPEC: |
case IPOPT_TS_PRESPEC: { |
|
struct sockaddr_in ipaddr = { |
|
.sin_len = sizeof(ipaddr), |
|
.sin_family = AF_INET, |
|
}; |
|
|
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 1130 ip_dooptions(struct mbuf *m) |
|
Line 1115 ip_dooptions(struct mbuf *m) |
|
pserialize_read_exit(s); |
pserialize_read_exit(s); |
ipt->ipt_ptr += sizeof(struct in_addr); |
ipt->ipt_ptr += sizeof(struct in_addr); |
break; |
break; |
|
} |
|
|
default: |
default: |
/* XXX can't take &ipt->ipt_flg */ |
/* XXX can't take &ipt->ipt_flg */ |
Line 1206 ip_rtaddr(struct in_addr dst, struct psr |
|
Line 1192 ip_rtaddr(struct in_addr dst, struct psr |
|
* up later by ip_srcroute if the receiver is interested. |
* up later by ip_srcroute if the receiver is interested. |
*/ |
*/ |
static void |
static void |
save_rte(u_char *option, struct in_addr dst) |
save_rte(struct mbuf *m, u_char *option, struct in_addr dst) |
{ |
{ |
|
struct ip_srcrt *isr; |
|
struct m_tag *mtag; |
unsigned olen; |
unsigned olen; |
|
|
olen = option[IPOPT_OLEN]; |
olen = option[IPOPT_OLEN]; |
if (olen > sizeof(ip_srcrt) - (1 + sizeof(dst))) |
if (olen > sizeof(isr->isr_hdr) + sizeof(isr->isr_routes)) |
return; |
return; |
memcpy((void *)ip_srcrt.srcopt, (void *)option, olen); |
|
ip_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr); |
mtag = m_tag_get(PACKET_TAG_SRCROUTE, sizeof(*isr), M_NOWAIT); |
ip_srcrt.dst = dst; |
if (mtag == NULL) |
|
return; |
|
isr = (struct ip_srcrt *)(mtag + 1); |
|
|
|
memcpy(isr->isr_hdr, option, olen); |
|
isr->isr_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr); |
|
isr->isr_dst = dst; |
|
m_tag_prepend(m, mtag); |
} |
} |
|
|
/* |
/* |
Line 1224 save_rte(u_char *option, struct in_addr |
|
Line 1219 save_rte(u_char *option, struct in_addr |
|
* The first hop is placed before the options, will be removed later. |
* The first hop is placed before the options, will be removed later. |
*/ |
*/ |
struct mbuf * |
struct mbuf * |
ip_srcroute(void) |
ip_srcroute(struct mbuf *m0) |
{ |
{ |
struct in_addr *p, *q; |
struct in_addr *p, *q; |
struct mbuf *m; |
struct mbuf *m; |
|
struct ip_srcrt *isr; |
|
struct m_tag *mtag; |
|
|
if (ip_nhops == 0) |
mtag = m_tag_find(m0, PACKET_TAG_SRCROUTE, NULL); |
|
if (mtag == NULL) |
return NULL; |
return NULL; |
|
isr = (struct ip_srcrt *)(mtag + 1); |
|
|
|
if (isr->isr_nhops == 0) |
|
return NULL; |
|
|
m = m_get(M_DONTWAIT, MT_SOOPTS); |
m = m_get(M_DONTWAIT, MT_SOOPTS); |
if (m == 0) |
if (m == NULL) |
return NULL; |
return NULL; |
|
|
MCLAIM(m, &inetdomain.dom_mowner); |
MCLAIM(m, &inetdomain.dom_mowner); |
#define OPTSIZ (sizeof(ip_srcrt.nop) + sizeof(ip_srcrt.srcopt)) |
#define OPTSIZ (sizeof(isr->isr_nop) + sizeof(isr->isr_hdr)) |
|
|
/* length is (nhops+1)*sizeof(addr) + sizeof(nop + srcrt header) */ |
/* length is (nhops+1)*sizeof(addr) + sizeof(nop + header) */ |
m->m_len = ip_nhops * sizeof(struct in_addr) + sizeof(struct in_addr) + |
m->m_len = (isr->isr_nhops + 1) * sizeof(struct in_addr) + OPTSIZ; |
OPTSIZ; |
|
|
|
/* |
/* |
* First save first hop for return route |
* First save first hop for return route |
*/ |
*/ |
p = &ip_srcrt.route[ip_nhops - 1]; |
p = &(isr->isr_routes[isr->isr_nhops - 1]); |
*(mtod(m, struct in_addr *)) = *p--; |
*(mtod(m, struct in_addr *)) = *p--; |
|
|
/* |
/* |
* Copy option fields and padding (nop) to mbuf. |
* Copy option fields and padding (nop) to mbuf. |
*/ |
*/ |
ip_srcrt.nop = IPOPT_NOP; |
isr->isr_nop = IPOPT_NOP; |
ip_srcrt.srcopt[IPOPT_OFFSET] = IPOPT_MINOFF; |
isr->isr_hdr[IPOPT_OFFSET] = IPOPT_MINOFF; |
memmove(mtod(m, char *) + sizeof(struct in_addr), &ip_srcrt.nop, |
memmove(mtod(m, char *) + sizeof(struct in_addr), &isr->isr_nop, |
OPTSIZ); |
OPTSIZ); |
q = (struct in_addr *)(mtod(m, char *) + |
q = (struct in_addr *)(mtod(m, char *) + |
sizeof(struct in_addr) + OPTSIZ); |
sizeof(struct in_addr) + OPTSIZ); |
Line 1262 ip_srcroute(void) |
|
Line 1264 ip_srcroute(void) |
|
* Record return path as an IP source route, |
* Record return path as an IP source route, |
* reversing the path (pointers are now aligned). |
* reversing the path (pointers are now aligned). |
*/ |
*/ |
while (p >= ip_srcrt.route) { |
while (p >= isr->isr_routes) { |
*q++ = *p--; |
*q++ = *p--; |
} |
} |
/* |
/* |
* Last hop goes to final destination. |
* Last hop goes to final destination. |
*/ |
*/ |
*q = ip_srcrt.dst; |
*q = isr->isr_dst; |
return (m); |
m_tag_delete(m0, mtag); |
|
return m; |
} |
} |
|
|
const int inetctlerrmap[PRC_NCMDS] = { |
const int inetctlerrmap[PRC_NCMDS] = { |
|
|
/* |
/* |
* 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 1491 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 (so->so_options & SO_TIMESTAMP |
if (SOOPT_TIMESTAMP(so->so_options)) |
#ifdef SO_OTIMESTAMP |
mp = sbsavetimestamp(so->so_options, m, mp); |
|| so->so_options & SO_OTIMESTAMP |
|
#endif |
|
) { |
|
struct timeval tv; |
|
|
|
microtime(&tv); |
|
#ifdef SO_OTIMESTAMP |
|
if (so->so_options & SO_OTIMESTAMP) { |
|
struct timeval50 tv50; |
|
timeval_to_timeval50(&tv, &tv50); |
|
*mp = sbcreatecontrol((void *) &tv50, sizeof(tv50), |
|
SCM_OTIMESTAMP, SOL_SOCKET); |
|
} else |
|
#endif |
|
*mp = sbcreatecontrol((void *) &tv, sizeof(tv), |
|
SCM_TIMESTAMP, SOL_SOCKET); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
if (inpflags & INP_RECVDSTADDR) { |
if (inpflags & INP_RECVDSTADDR) { |
*mp = sbcreatecontrol((void *) &ip->ip_dst, |
*mp = sbcreatecontrol(&ip->ip_dst, |
sizeof(struct in_addr), IP_RECVDSTADDR, IPPROTO_IP); |
sizeof(struct in_addr), IP_RECVDSTADDR, IPPROTO_IP); |
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((void *) &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; |
*mp = sbcreatecontrol((void *) &ipi, |
*mp = sbcreatecontrol(&ipi, |
sizeof(ipi), IP_PKTINFO, IPPROTO_IP); |
sizeof(ipi), IP_PKTINFO, IPPROTO_IP); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
Line 1553 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((void *) &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 1598 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
|
Line 1579 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
|
int error, tmp; |
int error, tmp; |
struct sysctlnode node; |
struct sysctlnode node; |
|
|
|
icmp_mtudisc_lock(); |
|
|
node = *rnode; |
node = *rnode; |
tmp = ip_mtudisc_timeout; |
tmp = ip_mtudisc_timeout; |
node.sysctl_data = &tmp; |
node.sysctl_data = &tmp; |
error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
if (error || newp == NULL) |
if (error || newp == NULL) |
return (error); |
goto out; |
if (tmp < 0) |
if (tmp < 0) { |
return (EINVAL); |
error = EINVAL; |
|
goto out; |
/* XXX NOMPSAFE still need softnet_lock */ |
} |
mutex_enter(softnet_lock); |
|
|
|
ip_mtudisc_timeout = tmp; |
ip_mtudisc_timeout = tmp; |
rt_timer_queue_change(ip_mtudisc_timeout_q, ip_mtudisc_timeout); |
rt_timer_queue_change(ip_mtudisc_timeout_q, ip_mtudisc_timeout); |
|
error = 0; |
mutex_exit(softnet_lock); |
out: |
|
icmp_mtudisc_unlock(); |
return (0); |
return error; |
} |
} |
|
|
static int |
static int |
Line 1662 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", |