version 1.307, 2013/06/27 20:17:36 |
version 1.337.2.2, 2016/11/04 14:49:21 |
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#include <sys/cdefs.h> |
#include <sys/cdefs.h> |
__KERNEL_RCSID(0, "$NetBSD$"); |
__KERNEL_RCSID(0, "$NetBSD$"); |
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#ifdef _KERNEL_OPT |
#include "opt_inet.h" |
#include "opt_inet.h" |
#include "opt_compat_netbsd.h" |
#include "opt_compat_netbsd.h" |
#include "opt_gateway.h" |
#include "opt_gateway.h" |
#include "opt_pfil_hooks.h" |
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#include "opt_ipsec.h" |
#include "opt_ipsec.h" |
#include "opt_mrouting.h" |
#include "opt_mrouting.h" |
#include "opt_mbuftrace.h" |
#include "opt_mbuftrace.h" |
#include "opt_inet_csum.h" |
#include "opt_inet_csum.h" |
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#include "opt_net_mpsafe.h" |
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#endif |
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#include "arp.h" |
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#include <sys/param.h> |
#include <sys/param.h> |
#include <sys/systm.h> |
#include <sys/systm.h> |
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#include <sys/cpu.h> |
#include <sys/mbuf.h> |
#include <sys/mbuf.h> |
#include <sys/domain.h> |
#include <sys/domain.h> |
#include <sys/protosw.h> |
#include <sys/protosw.h> |
Line 119 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 124 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include <net/if.h> |
#include <net/if.h> |
#include <net/if_dl.h> |
#include <net/if_dl.h> |
#include <net/route.h> |
#include <net/route.h> |
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#include <net/pktqueue.h> |
#include <net/pfil.h> |
#include <net/pfil.h> |
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#include <netinet/in.h> |
#include <netinet/in.h> |
Line 211 int ip_do_randomid = 0; |
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Line 217 int ip_do_randomid = 0; |
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* to the loopback interface instead of the interface where the |
* to the loopback interface instead of the interface where the |
* packets for those addresses are received. |
* packets for those addresses are received. |
*/ |
*/ |
int ip_checkinterface = 0; |
static int ip_checkinterface __read_mostly = 0; |
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struct rttimer_queue *ip_mtudisc_timeout_q = NULL; |
struct rttimer_queue *ip_mtudisc_timeout_q = NULL; |
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u_long in_ifaddrhash; /* size of hash table - 1 */ |
pktqueue_t * ip_pktq __read_mostly; |
int in_ifaddrentries; /* total number of addrs */ |
pfil_head_t * inet_pfil_hook __read_mostly; |
struct in_ifaddrhead in_ifaddrhead; |
ipid_state_t * ip_ids __read_mostly; |
struct in_ifaddrhashhead *in_ifaddrhashtbl; |
percpu_t * ipstat_percpu __read_mostly; |
u_long in_multihash; /* size of hash table - 1 */ |
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int in_multientries; /* total number of addrs */ |
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struct in_multihashhead *in_multihashtbl; |
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struct ifqueue ipintrq; |
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ipid_state_t * ip_ids; |
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uint16_t ip_id; |
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percpu_t *ipstat_percpu; |
static struct route ipforward_rt __cacheline_aligned; |
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#ifdef PFIL_HOOKS |
uint16_t ip_id; |
struct pfil_head inet_pfil_hook; |
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#endif |
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struct pool inmulti_pool; |
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#ifdef INET_CSUM_COUNTERS |
#ifdef INET_CSUM_COUNTERS |
#include <sys/device.h> |
#include <sys/device.h> |
Line 265 EVCNT_ATTACH_STATIC(ip_swcsum); |
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Line 259 EVCNT_ATTACH_STATIC(ip_swcsum); |
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* 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. |
*/ |
*/ |
int ip_nhops = 0; |
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static int ip_nhops = 0; |
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static struct ip_srcrt { |
static struct ip_srcrt { |
struct in_addr dst; /* final destination */ |
struct in_addr dst; /* final destination */ |
char nop; /* one NOP to align */ |
char nop; /* one NOP to align */ |
Line 275 static struct ip_srcrt { |
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Line 271 static struct ip_srcrt { |
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static int ip_drainwanted; |
static int ip_drainwanted; |
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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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static void save_rte(u_char *, struct in_addr); |
static void save_rte(u_char *, struct in_addr); |
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#ifdef MBUFTRACE |
#ifdef MBUFTRACE |
Line 282 struct mowner ip_rx_mowner = MOWNER_INIT |
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Line 283 struct mowner ip_rx_mowner = MOWNER_INIT |
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struct mowner ip_tx_mowner = MOWNER_INIT("internet", "tx"); |
struct mowner ip_tx_mowner = MOWNER_INIT("internet", "tx"); |
#endif |
#endif |
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static void sysctl_net_inet_ip_setup(struct sysctllog **); |
static void ipintr(void *); |
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static void ip_input(struct mbuf *); |
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static void ip_forward(struct mbuf *, int, struct ifnet *); |
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static bool ip_dooptions(struct mbuf *); |
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static struct in_ifaddr *ip_rtaddr(struct in_addr); |
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static void sysctl_net_inet_ip_setup(struct sysctllog **); |
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static struct in_ifaddr *ip_match_our_address(struct ifnet *, struct ip *, |
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int *); |
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static struct in_ifaddr *ip_match_our_address_broadcast(struct ifnet *, |
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struct ip *); |
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#ifdef NET_MPSAFE |
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#define SOFTNET_LOCK() mutex_enter(softnet_lock) |
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#define SOFTNET_UNLOCK() mutex_exit(softnet_lock) |
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#else |
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#define SOFTNET_LOCK() KASSERT(mutex_owned(softnet_lock)) |
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#define SOFTNET_UNLOCK() KASSERT(mutex_owned(softnet_lock)) |
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#endif |
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/* |
/* |
* IP initialization: fill in IP protocol switch table. |
* IP initialization: fill in IP protocol switch table. |
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ip_init(void) |
ip_init(void) |
{ |
{ |
const struct protosw *pr; |
const struct protosw *pr; |
int i; |
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in_init(); |
sysctl_net_inet_ip_setup(NULL); |
sysctl_net_inet_ip_setup(NULL); |
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pool_init(&inmulti_pool, sizeof(struct in_multi), 0, 0, 0, "inmltpl", |
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NULL, IPL_SOFTNET); |
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pr = pffindproto(PF_INET, IPPROTO_RAW, SOCK_RAW); |
pr = pffindproto(PF_INET, IPPROTO_RAW, SOCK_RAW); |
if (pr == 0) |
KASSERT(pr != NULL); |
panic("ip_init"); |
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for (i = 0; i < IPPROTO_MAX; i++) |
ip_pktq = pktq_create(IFQ_MAXLEN, ipintr, NULL); |
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KASSERT(ip_pktq != NULL); |
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for (u_int i = 0; i < IPPROTO_MAX; i++) { |
ip_protox[i] = pr - inetsw; |
ip_protox[i] = pr - inetsw; |
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} |
for (pr = inetdomain.dom_protosw; |
for (pr = inetdomain.dom_protosw; |
pr < inetdomain.dom_protoswNPROTOSW; pr++) |
pr < inetdomain.dom_protoswNPROTOSW; pr++) |
if (pr->pr_domain->dom_family == PF_INET && |
if (pr->pr_domain->dom_family == PF_INET && |
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ip_reass_init(); |
ip_reass_init(); |
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ip_ids = ip_id_init(); |
ip_ids = ip_id_init(); |
ip_id = time_second & 0xfffff; |
ip_id = time_uptime & 0xfffff; |
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ipintrq.ifq_maxlen = IFQ_MAXLEN; |
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TAILQ_INIT(&in_ifaddrhead); |
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in_ifaddrhashtbl = hashinit(IN_IFADDR_HASH_SIZE, HASH_LIST, true, |
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&in_ifaddrhash); |
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in_multihashtbl = hashinit(IN_IFADDR_HASH_SIZE, HASH_LIST, true, |
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&in_multihash); |
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ip_mtudisc_timeout_q = rt_timer_queue_create(ip_mtudisc_timeout); |
ip_mtudisc_timeout_q = rt_timer_queue_create(ip_mtudisc_timeout); |
#ifdef GATEWAY |
#ifdef GATEWAY |
ipflow_init(ip_hashsize); |
ipflow_init(); |
#endif |
#endif |
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#ifdef PFIL_HOOKS |
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/* Register our Packet Filter hook. */ |
/* Register our Packet Filter hook. */ |
inet_pfil_hook.ph_type = PFIL_TYPE_AF; |
inet_pfil_hook = pfil_head_create(PFIL_TYPE_AF, (void *)AF_INET); |
inet_pfil_hook.ph_af = AF_INET; |
KASSERT(inet_pfil_hook != NULL); |
i = pfil_head_register(&inet_pfil_hook); |
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if (i != 0) |
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printf("ip_init: WARNING: unable to register pfil hook, " |
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"error %d\n", i); |
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#endif /* PFIL_HOOKS */ |
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#ifdef MBUFTRACE |
#ifdef MBUFTRACE |
MOWNER_ATTACH(&ip_tx_mowner); |
MOWNER_ATTACH(&ip_tx_mowner); |
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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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struct sockaddr_in ipaddr = { |
static struct in_ifaddr * |
.sin_len = sizeof(ipaddr), |
ip_match_our_address(struct ifnet *ifp, struct ip *ip, int *downmatch) |
.sin_family = AF_INET, |
{ |
}; |
struct in_ifaddr *ia = NULL; |
struct route ipforward_rt; |
int checkif; |
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/* |
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* Enable a consistency check between the destination address |
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* and the arrival interface for a unicast packet (the RFC 1122 |
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* strong ES model) if IP forwarding is disabled and the packet |
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* is not locally generated. |
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* |
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* XXX - Checking also should be disabled if the destination |
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* address is ipnat'ed to a different interface. |
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* |
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* XXX - Checking is incompatible with IP aliases added |
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* to the loopback interface instead of the interface where |
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* the packets are received. |
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* |
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* XXX - We need to add a per ifaddr flag for this so that |
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* we get finer grain control. |
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*/ |
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checkif = ip_checkinterface && (ipforwarding == 0) && |
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(ifp->if_flags & IFF_LOOPBACK) == 0; |
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IN_ADDRHASH_READER_FOREACH(ia, ip->ip_dst.s_addr) { |
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if (in_hosteq(ia->ia_addr.sin_addr, ip->ip_dst)) { |
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if (ia->ia4_flags & IN_IFF_NOTREADY) |
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continue; |
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if (checkif && ia->ia_ifp != ifp) |
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continue; |
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if ((ia->ia_ifp->if_flags & IFF_UP) != 0) |
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break; |
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else |
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(*downmatch)++; |
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} |
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} |
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return ia; |
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} |
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static struct in_ifaddr * |
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ip_match_our_address_broadcast(struct ifnet *ifp, struct ip *ip) |
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{ |
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struct in_ifaddr *ia = NULL; |
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struct ifaddr *ifa; |
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IFADDR_READER_FOREACH(ifa, ifp) { |
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if (ifa->ifa_addr->sa_family != AF_INET) |
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continue; |
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ia = ifatoia(ifa); |
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if (ia->ia4_flags & IN_IFF_NOTREADY) |
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continue; |
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if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
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in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
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/* |
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* Look for all-0's host part (old broadcast addr), |
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* either for subnet or net. |
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*/ |
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ip->ip_dst.s_addr == ia->ia_subnet || |
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ip->ip_dst.s_addr == ia->ia_net) |
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goto matched; |
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/* |
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* An interface with IP address zero accepts |
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* all packets that arrive on that interface. |
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*/ |
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if (in_nullhost(ia->ia_addr.sin_addr)) |
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goto matched; |
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} |
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ia = NULL; |
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matched: |
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return ia; |
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} |
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/* |
/* |
* IP software interrupt routine |
* IP software interrupt routine. |
*/ |
*/ |
void |
static void |
ipintr(void) |
ipintr(void *arg __unused) |
{ |
{ |
int s; |
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struct mbuf *m; |
struct mbuf *m; |
struct ifqueue lcl_intrq; |
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memset(&lcl_intrq, 0, sizeof(lcl_intrq)); |
KASSERT(cpu_softintr_p()); |
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#ifndef NET_MPSAFE |
mutex_enter(softnet_lock); |
mutex_enter(softnet_lock); |
KERNEL_LOCK(1, NULL); |
#endif |
if (!IF_IS_EMPTY(&ipintrq)) { |
while ((m = pktq_dequeue(ip_pktq)) != NULL) { |
s = splnet(); |
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/* Take existing queue onto stack */ |
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lcl_intrq = ipintrq; |
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/* Zero out global queue, preserving maxlen and drops */ |
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ipintrq.ifq_head = NULL; |
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ipintrq.ifq_tail = NULL; |
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ipintrq.ifq_len = 0; |
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ipintrq.ifq_maxlen = lcl_intrq.ifq_maxlen; |
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ipintrq.ifq_drops = lcl_intrq.ifq_drops; |
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splx(s); |
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} |
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KERNEL_UNLOCK_ONE(NULL); |
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while (!IF_IS_EMPTY(&lcl_intrq)) { |
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IF_DEQUEUE(&lcl_intrq, m); |
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if (m == NULL) |
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break; |
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ip_input(m); |
ip_input(m); |
} |
} |
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#ifndef NET_MPSAFE |
mutex_exit(softnet_lock); |
mutex_exit(softnet_lock); |
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#endif |
} |
} |
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/* |
/* |
* Ip input routine. Checksum and byte swap header. If fragmented |
* IP input routine. Checksum and byte swap header. If fragmented |
* try to reassemble. Process options. Pass to next level. |
* try to reassemble. Process options. Pass to next level. |
*/ |
*/ |
void |
static void |
ip_input(struct mbuf *m) |
ip_input(struct mbuf *m) |
{ |
{ |
struct ip *ip = NULL; |
struct ip *ip = NULL; |
struct in_ifaddr *ia; |
struct in_ifaddr *ia = NULL; |
struct ifaddr *ifa; |
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int hlen = 0, len; |
int hlen = 0, len; |
int downmatch; |
int downmatch; |
int checkif; |
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int srcrt = 0; |
int srcrt = 0; |
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ifnet_t *ifp; |
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struct psref psref; |
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int s; |
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KASSERTMSG(cpu_softintr_p(), "ip_input: not in the software " |
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"interrupt handler; synchronization assumptions violated"); |
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MCLAIM(m, &ip_rx_mowner); |
MCLAIM(m, &ip_rx_mowner); |
KASSERT((m->m_flags & M_PKTHDR) != 0); |
KASSERT((m->m_flags & M_PKTHDR) != 0); |
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ifp = m_get_rcvif_psref(m, &psref); |
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if (__predict_false(ifp == NULL)) |
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goto out; |
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/* |
/* |
* If no IP addresses have been set yet but the interfaces |
* If no IP addresses have been set yet but the interfaces |
* are receiving, can't do anything with incoming packets yet. |
* are receiving, can't do anything with incoming packets yet. |
|
* Note: we pre-check without locks held. |
*/ |
*/ |
if (TAILQ_FIRST(&in_ifaddrhead) == 0) |
if (IN_ADDRLIST_READER_EMPTY()) |
goto bad; |
goto out; |
IP_STATINC(IP_STAT_TOTAL); |
IP_STATINC(IP_STAT_TOTAL); |
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/* |
/* |
* If the IP header is not aligned, slurp it up into a new |
* If the IP header is not aligned, slurp it up into a new |
* mbuf with space for link headers, in the event we forward |
* mbuf with space for link headers, in the event we forward |
Line 426 ip_input(struct mbuf *m) |
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Line 494 ip_input(struct mbuf *m) |
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(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 458 ip_input(struct mbuf *m) |
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Line 526 ip_input(struct mbuf *m) |
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*/ |
*/ |
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; |
} |
} |
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/* 127/8 must not appear on wire - RFC1122 */ |
/* 127/8 must not appear on wire - RFC1122 */ |
if ((ntohl(ip->ip_dst.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET || |
if ((ntohl(ip->ip_dst.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET || |
(ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) { |
(ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) { |
if ((m->m_pkthdr.rcvif->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; |
} |
} |
} |
} |
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switch (m->m_pkthdr.csum_flags & |
switch (m->m_pkthdr.csum_flags & |
((m->m_pkthdr.rcvif->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); |
goto badcsum; |
IP_STATINC(IP_STAT_BADSUM); |
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goto out; |
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case M_CSUM_IPv4: |
case M_CSUM_IPv4: |
/* Checksum was okay. */ |
/* Checksum was okay. */ |
Line 487 ip_input(struct mbuf *m) |
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Line 556 ip_input(struct mbuf *m) |
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* Must compute it ourselves. Maybe skip checksum on |
* Must compute it ourselves. Maybe skip checksum on |
* loopback interfaces. |
* loopback interfaces. |
*/ |
*/ |
if (__predict_true(!(m->m_pkthdr.rcvif->if_flags & |
if (__predict_true(!(ifp->if_flags & IFF_LOOPBACK) || |
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); |
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goto out; |
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} |
} |
} |
break; |
break; |
} |
} |
Line 504 ip_input(struct mbuf *m) |
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Line 575 ip_input(struct mbuf *m) |
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*/ |
*/ |
if (len < hlen) { |
if (len < hlen) { |
IP_STATINC(IP_STAT_BADLEN); |
IP_STATINC(IP_STAT_BADLEN); |
goto bad; |
goto out; |
} |
} |
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/* |
/* |
Line 515 ip_input(struct mbuf *m) |
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Line 586 ip_input(struct mbuf *m) |
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*/ |
*/ |
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 531 ip_input(struct mbuf *m) |
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Line 602 ip_input(struct mbuf *m) |
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*/ |
*/ |
m->m_flags |= M_CANFASTFWD; |
m->m_flags |= M_CANFASTFWD; |
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#ifdef PFIL_HOOKS |
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/* |
/* |
* Run through list of hooks for input packets. If there are any |
* Run through list of hooks for input packets. If there are any |
* filters which require that additional packets in the flow are |
* filters which require that additional packets in the flow are |
Line 539 ip_input(struct mbuf *m) |
|
Line 609 ip_input(struct mbuf *m) |
|
* 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. |
*/ |
*/ |
/* |
|
* let ipfilter look at packet on the wire, |
|
* not the decapsulated packet. |
|
*/ |
|
#if defined(IPSEC) |
#if defined(IPSEC) |
if (!ipsec_indone(m)) |
if (!ipsec_used || !ipsec_indone(m)) |
#else |
#else |
if (1) |
if (1) |
#endif |
#endif |
{ |
{ |
struct in_addr odst; |
struct in_addr odst = ip->ip_dst; |
|
bool freed; |
|
|
odst = ip->ip_dst; |
freed = pfil_run_hooks(inet_pfil_hook, &m, ifp, PFIL_IN) != 0; |
if (pfil_run_hooks(&inet_pfil_hook, &m, m->m_pkthdr.rcvif, |
if (freed || m == NULL) { |
PFIL_IN) != 0) |
m = NULL; |
return; |
goto out; |
if (m == NULL) |
} |
return; |
|
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
hlen = ip->ip_hl << 2; |
hlen = ip->ip_hl << 2; |
|
|
/* |
/* |
* XXX The setting of "srcrt" here is to prevent ip_forward() |
* XXX The setting of "srcrt" here is to prevent ip_forward() |
* from generating ICMP redirects for packets that have |
* from generating ICMP redirects for packets that have |
Line 575 ip_input(struct mbuf *m) |
|
Line 642 ip_input(struct mbuf *m) |
|
*/ |
*/ |
srcrt = (odst.s_addr != ip->ip_dst.s_addr); |
srcrt = (odst.s_addr != ip->ip_dst.s_addr); |
} |
} |
#endif /* PFIL_HOOKS */ |
|
|
|
#ifdef ALTQ |
#ifdef ALTQ |
/* XXX Temporary until ALTQ is changed to use a pfil hook */ |
/* XXX Temporary until ALTQ is changed to use a pfil hook */ |
if (altq_input != NULL && (*altq_input)(m, AF_INET) == 0) { |
if (altq_input) { |
/* packet dropped by traffic conditioner */ |
SOFTNET_LOCK(); |
return; |
if ((*altq_input)(m, AF_INET) == 0) { |
|
/* Packet dropped by traffic conditioner. */ |
|
SOFTNET_UNLOCK(); |
|
m = NULL; |
|
goto out; |
|
} |
|
SOFTNET_UNLOCK(); |
} |
} |
#endif |
#endif |
|
|
Line 592 ip_input(struct mbuf *m) |
|
Line 664 ip_input(struct mbuf *m) |
|
* 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 */ |
ip_nhops = 0; /* for source routed packets */ |
if (hlen > sizeof (struct ip) && ip_dooptions(m)) |
if (hlen > sizeof (struct ip) && ip_dooptions(m)) { |
return; |
m = NULL; |
|
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) && |
|
(m->m_pkthdr.rcvif != NULL) && |
|
((m->m_pkthdr.rcvif->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. |
* |
* |
* Traditional 4.4BSD did not consult IFF_UP at all. |
* Traditional 4.4BSD did not consult IFF_UP at all. |
* The behavior here is to treat addresses on !IFF_UP interface |
* The behavior here is to treat addresses on !IFF_UP interface |
* 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) { |
s = pserialize_read_enter(); |
if (in_hosteq(ia->ia_addr.sin_addr, ip->ip_dst)) { |
ia = ip_match_our_address(ifp, ip, &downmatch); |
if (checkif && ia->ia_ifp != m->m_pkthdr.rcvif) |
if (ia != NULL) { |
continue; |
pserialize_read_exit(s); |
if ((ia->ia_ifp->if_flags & IFF_UP) != 0) |
|
break; |
|
else |
|
downmatch++; |
|
} |
|
} |
|
if (ia != NULL) |
|
goto ours; |
goto ours; |
if (m->m_pkthdr.rcvif && m->m_pkthdr.rcvif->if_flags & IFF_BROADCAST) { |
} |
IFADDR_FOREACH(ifa, m->m_pkthdr.rcvif) { |
|
if (ifa->ifa_addr->sa_family != AF_INET) |
if (ifp->if_flags & IFF_BROADCAST) { |
continue; |
ia = ip_match_our_address_broadcast(ifp, ip); |
ia = ifatoia(ifa); |
if (ia != NULL) { |
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
pserialize_read_exit(s); |
in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
goto ours; |
/* |
|
* 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; |
|
} |
} |
} |
} |
|
pserialize_read_exit(s); |
|
|
if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
struct in_multi *inm; |
|
#ifdef MROUTING |
#ifdef MROUTING |
extern struct socket *ip_mrouter; |
extern struct socket *ip_mrouter; |
|
|
Line 675 ip_input(struct mbuf *m) |
|
Line 710 ip_input(struct mbuf *m) |
|
* as expected when ip_mforward() is called from |
* as expected when ip_mforward() is called from |
* ip_output().) |
* ip_output().) |
*/ |
*/ |
if (ip_mforward(m, m->m_pkthdr.rcvif) != 0) { |
SOFTNET_LOCK(); |
|
if (ip_mforward(m, ifp) != 0) { |
|
SOFTNET_UNLOCK(); |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
goto out; |
return; |
|
} |
} |
|
SOFTNET_UNLOCK(); |
|
|
/* |
/* |
* The process-level routing demon needs to receive |
* The process-level routing demon needs to receive |
* all multicast IGMP packets, whether or not this |
* all multicast IGMP packets, whether or not this |
* host belongs to their destination groups. |
* host belongs to their destination groups. |
*/ |
*/ |
if (ip->ip_p == IPPROTO_IGMP) |
if (ip->ip_p == IPPROTO_IGMP) { |
goto ours; |
goto ours; |
|
} |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
} |
} |
#endif |
#endif |
Line 695 ip_input(struct mbuf *m) |
|
Line 733 ip_input(struct mbuf *m) |
|
* See if we belong to the destination multicast group on the |
* See if we belong to the destination multicast group on the |
* arrival interface. |
* arrival interface. |
*/ |
*/ |
IN_LOOKUP_MULTI(ip->ip_dst, m->m_pkthdr.rcvif, inm); |
if (!in_multi_group(ip->ip_dst, ifp, 0)) { |
if (inm == NULL) { |
|
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
goto out; |
return; |
|
} |
} |
goto ours; |
goto ours; |
} |
} |
Line 711 ip_input(struct mbuf *m) |
|
Line 747 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 721 ip_input(struct mbuf *m) |
|
Line 758 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; |
} |
} |
#ifdef IPSEC |
#ifdef IPSEC |
/* Perform IPsec, if any. */ |
/* Perform IPsec, if any. */ |
if (ipsec4_input(m, IP_FORWARDING | (ip_directedbcast ? |
if (ipsec_used) { |
IP_ALLOWBROADCAST : 0)) != 0) { |
SOFTNET_LOCK(); |
goto bad; |
if (ipsec4_input(m, IP_FORWARDING | |
|
(ip_directedbcast ? IP_ALLOWBROADCAST : 0)) != 0) { |
|
SOFTNET_UNLOCK(); |
|
goto out; |
|
} |
|
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. |
|
|
* Note that we do not visit this with protocols with PCB layer |
* Note that we do not visit this with protocols with PCB layer |
* code - like UDP/TCP/raw IP. |
* code - like UDP/TCP/raw IP. |
*/ |
*/ |
if ((inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0) { |
if (ipsec_used && |
|
(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) { |
goto bad; |
SOFTNET_UNLOCK(); |
|
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 && ip) { |
ia->ia_ifa.ifa_data.ifad_inbytes += ntohs(ip->ip_len); |
struct in_ifaddr *_ia; |
|
/* |
|
* Keep a reference from ip_match_our_address with psref |
|
* is expensive, so explore ia here again. |
|
*/ |
|
s = pserialize_read_enter(); |
|
_ia = in_get_ia(ip->ip_dst); |
|
_ia->ia_ifa.ifa_data.ifad_inbytes += ntohs(ip->ip_len); |
|
pserialize_read_exit(s); |
|
} |
#endif |
#endif |
IP_STATINC(IP_STAT_DELIVERED); |
IP_STATINC(IP_STAT_DELIVERED); |
{ |
|
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); |
return; |
SOFTNET_UNLOCK(); |
} |
|
bad: |
|
m_freem(m); |
|
return; |
return; |
|
|
badcsum: |
out: |
IP_STATINC(IP_STAT_BADSUM); |
m_put_rcvif_psref(ifp, &psref); |
m_freem(m); |
if (m != NULL) |
|
m_freem(m); |
} |
} |
|
|
/* |
/* |
|
|
} |
} |
|
|
/* |
/* |
* Do option processing on a datagram, |
* ip_dooptions: perform option processing on a datagram, possibly discarding |
* possibly discarding it if bad options are encountered, |
* it if bad options are encountered, or forwarding it if source-routed. |
* or forwarding it if source-routed. |
* |
* Returns 1 if packet has been forwarded/freed, |
* => Returns true if packet has been forwarded/freed. |
* 0 if the packet should be processed further. |
* => Returns false if the packet should be processed further. |
*/ |
*/ |
int |
static bool |
ip_dooptions(struct mbuf *m) |
ip_dooptions(struct mbuf *m) |
{ |
{ |
struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
Line 841 ip_dooptions(struct mbuf *m) |
|
Line 900 ip_dooptions(struct mbuf *m) |
|
int opt, optlen, cnt, off, code, type = ICMP_PARAMPROB, forward = 0; |
int opt, optlen, cnt, off, code, type = ICMP_PARAMPROB, forward = 0; |
struct in_addr dst; |
struct in_addr dst; |
n_time ntime; |
n_time ntime; |
|
struct ifaddr *ifa; |
|
int s; |
|
|
dst = ip->ip_dst; |
dst = ip->ip_dst; |
cp = (u_char *)(ip + 1); |
cp = (u_char *)(ip + 1); |
Line 892 ip_dooptions(struct mbuf *m) |
|
Line 953 ip_dooptions(struct mbuf *m) |
|
goto bad; |
goto bad; |
} |
} |
ipaddr.sin_addr = ip->ip_dst; |
ipaddr.sin_addr = ip->ip_dst; |
ia = ifatoia(ifa_ifwithaddr(sintosa(&ipaddr))); |
|
if (ia == 0) { |
s = pserialize_read_enter(); |
|
ifa = ifa_ifwithaddr(sintosa(&ipaddr)); |
|
if (ifa == NULL) { |
|
pserialize_read_exit(s); |
if (opt == IPOPT_SSRR) { |
if (opt == IPOPT_SSRR) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_SRCFAIL; |
code = ICMP_UNREACH_SRCFAIL; |
Line 905 ip_dooptions(struct mbuf *m) |
|
Line 969 ip_dooptions(struct mbuf *m) |
|
*/ |
*/ |
break; |
break; |
} |
} |
|
pserialize_read_exit(s); |
|
|
off--; /* 0 origin */ |
off--; /* 0 origin */ |
if ((off + sizeof(struct in_addr)) > optlen) { |
if ((off + sizeof(struct in_addr)) > optlen) { |
/* |
/* |
Line 918 ip_dooptions(struct mbuf *m) |
|
Line 984 ip_dooptions(struct mbuf *m) |
|
*/ |
*/ |
memcpy((void *)&ipaddr.sin_addr, (void *)(cp + off), |
memcpy((void *)&ipaddr.sin_addr, (void *)(cp + off), |
sizeof(ipaddr.sin_addr)); |
sizeof(ipaddr.sin_addr)); |
if (opt == IPOPT_SSRR) |
s = pserialize_read_enter(); |
ia = ifatoia(ifa_ifwithladdr(sintosa(&ipaddr))); |
if (opt == IPOPT_SSRR) { |
else |
ifa = ifa_ifwithladdr(sintosa(&ipaddr)); |
|
if (ifa != NULL) |
|
ia = ifatoia(ifa); |
|
else |
|
ia = NULL; |
|
} else { |
ia = ip_rtaddr(ipaddr.sin_addr); |
ia = ip_rtaddr(ipaddr.sin_addr); |
if (ia == 0) { |
} |
|
if (ia == NULL) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_SRCFAIL; |
code = ICMP_UNREACH_SRCFAIL; |
|
pserialize_read_exit(s); |
goto bad; |
goto bad; |
} |
} |
ip->ip_dst = ipaddr.sin_addr; |
ip->ip_dst = ipaddr.sin_addr; |
bcopy((void *)&ia->ia_addr.sin_addr, |
bcopy((void *)&ia->ia_addr.sin_addr, |
(void *)(cp + off), sizeof(struct in_addr)); |
(void *)(cp + off), sizeof(struct in_addr)); |
|
pserialize_read_exit(s); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
/* |
/* |
* Let ip_intr's mcast routing check handle mcast pkts |
* Let ip_intr's mcast routing check handle mcast pkts |
Line 958 ip_dooptions(struct mbuf *m) |
|
Line 1032 ip_dooptions(struct mbuf *m) |
|
* locate outgoing interface; if we're the destination, |
* locate outgoing interface; if we're the destination, |
* use the incoming interface (should be same). |
* use the incoming interface (should be same). |
*/ |
*/ |
if ((ia = ifatoia(ifa_ifwithaddr(sintosa(&ipaddr)))) |
s = pserialize_read_enter(); |
== NULL && |
ifa = ifa_ifwithaddr(sintosa(&ipaddr)); |
(ia = ip_rtaddr(ipaddr.sin_addr)) == NULL) { |
if (ifa == NULL) { |
type = ICMP_UNREACH; |
ia = ip_rtaddr(ipaddr.sin_addr); |
code = ICMP_UNREACH_HOST; |
if (ia == NULL) { |
goto bad; |
pserialize_read_exit(s); |
|
type = ICMP_UNREACH; |
|
code = ICMP_UNREACH_HOST; |
|
goto bad; |
|
} |
|
} else { |
|
ia = ifatoia(ifa); |
} |
} |
bcopy((void *)&ia->ia_addr.sin_addr, |
bcopy((void *)&ia->ia_addr.sin_addr, |
(void *)(cp + off), sizeof(struct in_addr)); |
(void *)(cp + off), sizeof(struct in_addr)); |
|
pserialize_read_exit(s); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
break; |
break; |
|
|
Line 995 ip_dooptions(struct mbuf *m) |
|
Line 1076 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, _ss; |
|
|
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 1003 ip_dooptions(struct mbuf *m) |
|
Line 1087 ip_dooptions(struct mbuf *m) |
|
goto bad; |
goto bad; |
} |
} |
ipaddr.sin_addr = dst; |
ipaddr.sin_addr = dst; |
ia = ifatoia(ifaof_ifpforaddr(sintosa(&ipaddr), |
_ss = pserialize_read_enter(); |
m->m_pkthdr.rcvif)); |
rcvif = m_get_rcvif(m, &_s); |
if (ia == 0) |
ifa = ifaof_ifpforaddr(sintosa(&ipaddr), rcvif); |
continue; |
m_put_rcvif(rcvif, &_s); |
|
if (ifa == NULL) { |
|
pserialize_read_exit(_ss); |
|
break; |
|
} |
|
ia = ifatoia(ifa); |
bcopy(&ia->ia_addr.sin_addr, |
bcopy(&ia->ia_addr.sin_addr, |
cp0, sizeof(struct in_addr)); |
cp0, sizeof(struct in_addr)); |
|
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: |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
Line 1021 ip_dooptions(struct mbuf *m) |
|
Line 1112 ip_dooptions(struct mbuf *m) |
|
} |
} |
memcpy(&ipaddr.sin_addr, cp0, |
memcpy(&ipaddr.sin_addr, cp0, |
sizeof(struct in_addr)); |
sizeof(struct in_addr)); |
if (ifatoia(ifa_ifwithaddr(sintosa(&ipaddr))) |
s = pserialize_read_enter(); |
== NULL) |
ifa = ifa_ifwithaddr(sintosa(&ipaddr)); |
|
if (ifa == NULL) { |
|
pserialize_read_exit(s); |
continue; |
continue; |
|
} |
|
pserialize_read_exit(s); |
ipt->ipt_ptr += sizeof(struct in_addr); |
ipt->ipt_ptr += sizeof(struct in_addr); |
break; |
break; |
|
|
Line 1041 ip_dooptions(struct mbuf *m) |
|
Line 1136 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); |
|
return (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 (0); |
return false; |
bad: |
bad: |
icmp_error(m, type, code, 0, 0); |
icmp_error(m, type, code, 0, 0); |
IP_STATINC(IP_STAT_BADOPTIONS); |
IP_STATINC(IP_STAT_BADOPTIONS); |
return (1); |
return true; |
} |
} |
|
|
/* |
/* |
* Given address of next destination (final or next hop), |
* ip_rtaddr: given address of next destination (final or next hop), |
* return internet address info of interface to be used to get there. |
* return internet address info of interface to be used to get there. |
*/ |
*/ |
struct in_ifaddr * |
static struct in_ifaddr * |
ip_rtaddr(struct in_addr dst) |
ip_rtaddr(struct in_addr dst) |
{ |
{ |
struct rtentry *rt; |
struct rtentry *rt; |
Line 1071 ip_rtaddr(struct in_addr dst) |
|
Line 1177 ip_rtaddr(struct in_addr dst) |
|
|
|
sockaddr_in_init(&u.dst4, &dst, 0); |
sockaddr_in_init(&u.dst4, &dst, 0); |
|
|
if ((rt = rtcache_lookup(&ipforward_rt, &u.dst)) == NULL) |
SOFTNET_LOCK(); |
|
rt = rtcache_lookup(&ipforward_rt, &u.dst); |
|
SOFTNET_UNLOCK(); |
|
if (rt == NULL) |
return NULL; |
return NULL; |
|
|
return ifatoia(rt->rt_ifa); |
return ifatoia(rt->rt_ifa); |
} |
} |
|
|
/* |
/* |
* Save incoming source route for use in replies, |
* save_rte: save incoming source route for use in replies, to be picked |
* to be picked up later by ip_srcroute if the receiver is interested. |
* up later by ip_srcroute if the receiver is interested. |
*/ |
*/ |
void |
static void |
save_rte(u_char *option, struct in_addr dst) |
save_rte(u_char *option, struct in_addr dst) |
{ |
{ |
unsigned olen; |
unsigned olen; |
|
|
olen = option[IPOPT_OLEN]; |
olen = option[IPOPT_OLEN]; |
#ifdef DIAGNOSTIC |
|
if (ipprintfs) |
|
printf("save_rte: olen %d\n", olen); |
|
#endif /* 0 */ |
|
if (olen > sizeof(ip_srcrt) - (1 + sizeof(dst))) |
if (olen > sizeof(ip_srcrt) - (1 + sizeof(dst))) |
return; |
return; |
memcpy((void *)ip_srcrt.srcopt, (void *)option, olen); |
memcpy((void *)ip_srcrt.srcopt, (void *)option, olen); |
Line 1121 ip_srcroute(void) |
|
Line 1226 ip_srcroute(void) |
|
/* length is (nhops+1)*sizeof(addr) + sizeof(nop + srcrt header) */ |
/* length is (nhops+1)*sizeof(addr) + sizeof(nop + srcrt header) */ |
m->m_len = ip_nhops * sizeof(struct in_addr) + sizeof(struct in_addr) + |
m->m_len = ip_nhops * sizeof(struct in_addr) + sizeof(struct in_addr) + |
OPTSIZ; |
OPTSIZ; |
#ifdef DIAGNOSTIC |
|
if (ipprintfs) |
|
printf("ip_srcroute: nhops %d mlen %d", ip_nhops, m->m_len); |
|
#endif |
|
|
|
/* |
/* |
* First save first hop for return route |
* First save first hop for return route |
*/ |
*/ |
p = &ip_srcrt.route[ip_nhops - 1]; |
p = &ip_srcrt.route[ip_nhops - 1]; |
*(mtod(m, struct in_addr *)) = *p--; |
*(mtod(m, struct in_addr *)) = *p--; |
#ifdef DIAGNOSTIC |
|
if (ipprintfs) |
|
printf(" hops %x", ntohl(mtod(m, struct in_addr *)->s_addr)); |
|
#endif |
|
|
|
/* |
/* |
* Copy option fields and padding (nop) to mbuf. |
* Copy option fields and padding (nop) to mbuf. |
Line 1151 ip_srcroute(void) |
|
Line 1248 ip_srcroute(void) |
|
* reversing the path (pointers are now aligned). |
* reversing the path (pointers are now aligned). |
*/ |
*/ |
while (p >= ip_srcrt.route) { |
while (p >= ip_srcrt.route) { |
#ifdef DIAGNOSTIC |
|
if (ipprintfs) |
|
printf(" %x", ntohl(q->s_addr)); |
|
#endif |
|
*q++ = *p--; |
*q++ = *p--; |
} |
} |
/* |
/* |
* Last hop goes to final destination. |
* Last hop goes to final destination. |
*/ |
*/ |
*q = ip_srcrt.dst; |
*q = ip_srcrt.dst; |
#ifdef DIAGNOSTIC |
|
if (ipprintfs) |
|
printf(" %x\n", ntohl(q->s_addr)); |
|
#endif |
|
return (m); |
return (m); |
} |
} |
|
|
Line 1209 ip_drainstub(void) |
|
Line 1298 ip_drainstub(void) |
|
* The srcrt parameter indicates whether the packet is being forwarded |
* The srcrt parameter indicates whether the packet is being forwarded |
* via a source route. |
* via a source route. |
*/ |
*/ |
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 1221 ip_forward(struct mbuf *m, int srcrt) |
|
Line 1310 ip_forward(struct mbuf *m, int srcrt) |
|
struct sockaddr dst; |
struct sockaddr dst; |
struct sockaddr_in dst4; |
struct sockaddr_in dst4; |
} u; |
} u; |
|
uint64_t *ips; |
|
|
|
KASSERTMSG(cpu_softintr_p(), "ip_forward: not in the software " |
|
"interrupt handler; synchronization assumptions violated"); |
|
|
/* |
/* |
* We are now in the output path. |
* We are now in the output path. |
Line 1233 ip_forward(struct mbuf *m, int srcrt) |
|
Line 1326 ip_forward(struct mbuf *m, int srcrt) |
|
m->m_pkthdr.csum_flags = 0; |
m->m_pkthdr.csum_flags = 0; |
|
|
dest = 0; |
dest = 0; |
#ifdef DIAGNOSTIC |
|
if (ipprintfs) { |
|
printf("forward: src %s ", inet_ntoa(ip->ip_src)); |
|
printf("dst %s ttl %x\n", inet_ntoa(ip->ip_dst), ip->ip_ttl); |
|
} |
|
#endif |
|
if (m->m_flags & (M_BCAST|M_MCAST) || in_canforward(ip->ip_dst) == 0) { |
if (m->m_flags & (M_BCAST|M_MCAST) || in_canforward(ip->ip_dst) == 0) { |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
m_freem(m); |
return; |
return; |
} |
} |
|
|
if (ip->ip_ttl <= IPTTLDEC) { |
if (ip->ip_ttl <= IPTTLDEC) { |
icmp_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, dest, 0); |
icmp_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, dest, 0); |
return; |
return; |
} |
} |
|
|
sockaddr_in_init(&u.dst4, &ip->ip_dst, 0); |
sockaddr_in_init(&u.dst4, &ip->ip_dst, 0); |
|
|
if ((rt = rtcache_lookup(&ipforward_rt, &u.dst)) == NULL) { |
if ((rt = rtcache_lookup(&ipforward_rt, &u.dst)) == NULL) { |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, dest, 0); |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, dest, 0); |
return; |
return; |
Line 1274 ip_forward(struct mbuf *m, int srcrt) |
|
Line 1363 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 1291 ip_forward(struct mbuf *m, int srcrt) |
|
Line 1380 ip_forward(struct mbuf *m, int srcrt) |
|
*/ |
*/ |
type = ICMP_REDIRECT; |
type = ICMP_REDIRECT; |
code = ICMP_REDIRECT_HOST; |
code = ICMP_REDIRECT_HOST; |
#ifdef DIAGNOSTIC |
|
if (ipprintfs) |
|
printf("redirect (%d) to %x\n", code, |
|
(u_int32_t)dest); |
|
#endif |
|
} |
} |
} |
} |
|
|
Line 1303 ip_forward(struct mbuf *m, int srcrt) |
|
Line 1387 ip_forward(struct mbuf *m, int srcrt) |
|
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
NULL, NULL); |
NULL, NULL); |
|
|
if (error) |
if (error) { |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
else { |
goto error; |
uint64_t *ips = IP_STAT_GETREF(); |
} |
ips[IP_STAT_FORWARD]++; |
|
if (type) { |
ips = IP_STAT_GETREF(); |
ips[IP_STAT_REDIRECTSENT]++; |
ips[IP_STAT_FORWARD]++; |
IP_STAT_PUTREF(); |
|
} else { |
if (type) { |
IP_STAT_PUTREF(); |
ips[IP_STAT_REDIRECTSENT]++; |
if (mcopy) { |
IP_STAT_PUTREF(); |
|
goto redirect; |
|
} |
|
|
|
IP_STAT_PUTREF(); |
|
if (mcopy) { |
#ifdef GATEWAY |
#ifdef GATEWAY |
if (mcopy->m_flags & M_CANFASTFWD) |
if (mcopy->m_flags & M_CANFASTFWD) |
ipflow_create(&ipforward_rt, mcopy); |
ipflow_create(&ipforward_rt, mcopy); |
#endif |
#endif |
m_freem(mcopy); |
m_freem(mcopy); |
} |
|
return; |
|
} |
|
} |
} |
if (mcopy == NULL) |
|
|
percpu_putref(ipforward_rt_percpu); |
|
return; |
|
|
|
redirect: |
|
error: |
|
if (mcopy == NULL) { |
|
percpu_putref(ipforward_rt_percpu); |
return; |
return; |
|
} |
|
|
switch (error) { |
switch (error) { |
|
|
Line 1348 ip_forward(struct mbuf *m, int srcrt) |
|
Line 1442 ip_forward(struct mbuf *m, int srcrt) |
|
if ((rt = rtcache_validate(&ipforward_rt)) != NULL) |
if ((rt = rtcache_validate(&ipforward_rt)) != NULL) |
destmtu = rt->rt_ifp->if_mtu; |
destmtu = rt->rt_ifp->if_mtu; |
#ifdef IPSEC |
#ifdef IPSEC |
(void)ipsec4_forward(mcopy, &destmtu); |
if (ipsec_used) |
|
(void)ipsec4_forward(mcopy, &destmtu); |
#endif |
#endif |
IP_STATINC(IP_STAT_CANTFRAG); |
IP_STATINC(IP_STAT_CANTFRAG); |
break; |
break; |
|
|
case ENOBUFS: |
case ENOBUFS: |
#if 1 |
|
/* |
/* |
* a router should not generate ICMP_SOURCEQUENCH as |
* Do not generate ICMP_SOURCEQUENCH as required in RFC 1812, |
* required in RFC1812 Requirements for IP Version 4 Routers. |
* Requirements for IP Version 4 Routers. Source quench can |
* source quench could be a big problem under DoS attacks, |
* big problem under DoS attacks or if the underlying |
* or if the underlying interface is rate-limited. |
* interface is rate-limited. |
*/ |
*/ |
if (mcopy) |
if (mcopy) |
m_freem(mcopy); |
m_freem(mcopy); |
|
percpu_putref(ipforward_rt_percpu); |
return; |
return; |
#else |
|
type = ICMP_SOURCEQUENCH; |
|
code = 0; |
|
break; |
|
#endif |
|
} |
} |
icmp_error(mcopy, type, code, dest, destmtu); |
icmp_error(mcopy, type, code, dest, destmtu); |
|
percpu_putref(ipforward_rt_percpu); |
} |
} |
|
|
void |
void |
ip_savecontrol(struct inpcb *inp, struct mbuf **mp, struct ip *ip, |
ip_savecontrol(struct inpcb *inp, struct mbuf **mp, struct ip *ip, |
struct mbuf *m) |
struct mbuf *m) |
{ |
{ |
|
struct socket *so = inp->inp_socket; |
|
ifnet_t *ifp; |
|
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 (inp->inp_socket->so_options & SO_TIMESTAMP |
if (so->so_options & SO_TIMESTAMP |
#ifdef SO_OTIMESTAMP |
#ifdef SO_OTIMESTAMP |
|| inp->inp_socket->so_options & SO_OTIMESTAMP |
|| so->so_options & SO_OTIMESTAMP |
#endif |
#endif |
) { |
) { |
struct timeval tv; |
struct timeval tv; |
|
|
microtime(&tv); |
microtime(&tv); |
#ifdef SO_OTIMESTAMP |
#ifdef SO_OTIMESTAMP |
if (inp->inp_socket->so_options & SO_OTIMESTAMP) { |
if (so->so_options & SO_OTIMESTAMP) { |
struct timeval50 tv50; |
struct timeval50 tv50; |
timeval_to_timeval50(&tv, &tv50); |
timeval_to_timeval50(&tv, &tv50); |
*mp = sbcreatecontrol((void *) &tv50, sizeof(tv50), |
*mp = sbcreatecontrol((void *) &tv50, sizeof(tv50), |
Line 1399 ip_savecontrol(struct inpcb *inp, struct |
|
Line 1498 ip_savecontrol(struct inpcb *inp, struct |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
if (inp->inp_flags & INP_RECVDSTADDR) { |
if (inpflags & INP_RECVDSTADDR) { |
*mp = sbcreatecontrol((void *) &ip->ip_dst, |
*mp = sbcreatecontrol((void *) &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 (inp->inp_flags & INP_RECVPKTINFO) { |
if (inpflags & INP_RECVPKTINFO) { |
struct in_pktinfo ipi; |
struct in_pktinfo ipi; |
ipi.ipi_addr = ip->ip_src; |
ipi.ipi_addr = ip->ip_src; |
ipi.ipi_ifindex = m->m_pkthdr.rcvif->if_index; |
ipi.ipi_ifindex = ifp->if_index; |
*mp = sbcreatecontrol((void *) &ipi, |
*mp = sbcreatecontrol((void *) &ipi, |
sizeof(ipi), IP_RECVPKTINFO, IPPROTO_IP); |
sizeof(ipi), IP_RECVPKTINFO, IPPROTO_IP); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
if (inp->inp_flags & INP_PKTINFO) { |
if (inpflags & INP_PKTINFO) { |
struct in_pktinfo ipi; |
struct in_pktinfo ipi; |
ipi.ipi_addr = ip->ip_dst; |
ipi.ipi_addr = ip->ip_dst; |
ipi.ipi_ifindex = m->m_pkthdr.rcvif->if_index; |
ipi.ipi_ifindex = ifp->if_index; |
*mp = sbcreatecontrol((void *) &ipi, |
*mp = sbcreatecontrol((void *) &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; |
} |
} |
#ifdef notyet |
if (inpflags & INP_RECVIF) { |
/* |
|
* XXX |
|
* Moving these out of udp_input() made them even more broken |
|
* than they already were. |
|
* - fenner@parc.xerox.com |
|
*/ |
|
/* options were tossed already */ |
|
if (inp->inp_flags & INP_RECVOPTS) { |
|
*mp = sbcreatecontrol((void *) opts_deleted_above, |
|
sizeof(struct in_addr), IP_RECVOPTS, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
/* ip_srcroute doesn't do what we want here, need to fix */ |
|
if (inp->inp_flags & INP_RECVRETOPTS) { |
|
*mp = sbcreatecontrol((void *) ip_srcroute(), |
|
sizeof(struct in_addr), IP_RECVRETOPTS, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
#endif |
|
if (inp->inp_flags & INP_RECVIF) { |
|
struct sockaddr_dl sdl; |
struct sockaddr_dl sdl; |
|
|
sockaddr_dl_init(&sdl, sizeof(sdl), |
sockaddr_dl_init(&sdl, sizeof(sdl), ifp->if_index, 0, NULL, 0, |
(m->m_pkthdr.rcvif != NULL) |
NULL, 0); |
? m->m_pkthdr.rcvif->if_index |
|
: 0, |
|
0, NULL, 0, NULL, 0); |
|
*mp = sbcreatecontrol(&sdl, sdl.sdl_len, IP_RECVIF, IPPROTO_IP); |
*mp = sbcreatecontrol(&sdl, sdl.sdl_len, IP_RECVIF, IPPROTO_IP); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
if (inp->inp_flags & INP_RECVTTL) { |
if (inpflags & INP_RECVTTL) { |
*mp = sbcreatecontrol((void *) &ip->ip_ttl, |
*mp = sbcreatecontrol((void *) &ip->ip_ttl, |
sizeof(uint8_t), IP_RECVTTL, IPPROTO_IP); |
sizeof(uint8_t), IP_RECVTTL, IPPROTO_IP); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
|
m_put_rcvif_psref(ifp, &psref); |
} |
} |
|
|
/* |
/* |
Line 1520 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
|
Line 1595 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
|
return (0); |
return (0); |
} |
} |
|
|
#ifdef GATEWAY |
|
/* |
|
* sysctl helper routine for net.inet.ip.maxflows. |
|
*/ |
|
static int |
|
sysctl_net_inet_ip_maxflows(SYSCTLFN_ARGS) |
|
{ |
|
int error; |
|
|
|
error = sysctl_lookup(SYSCTLFN_CALL(rnode)); |
|
if (error || newp == NULL) |
|
return (error); |
|
|
|
mutex_enter(softnet_lock); |
|
KERNEL_LOCK(1, NULL); |
|
|
|
ipflow_prune(); |
|
|
|
KERNEL_UNLOCK_ONE(NULL); |
|
mutex_exit(softnet_lock); |
|
|
|
return (0); |
|
} |
|
|
|
static int |
|
sysctl_net_inet_ip_hashsize(SYSCTLFN_ARGS) |
|
{ |
|
int error, tmp; |
|
struct sysctlnode node; |
|
|
|
node = *rnode; |
|
tmp = ip_hashsize; |
|
node.sysctl_data = &tmp; |
|
error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
|
if (error || newp == NULL) |
|
return (error); |
|
|
|
if ((tmp & (tmp - 1)) == 0 && tmp != 0) { |
|
/* |
|
* Can only fail due to malloc() |
|
*/ |
|
mutex_enter(softnet_lock); |
|
KERNEL_LOCK(1, NULL); |
|
|
|
error = ipflow_invalidate_all(tmp); |
|
|
|
KERNEL_UNLOCK_ONE(NULL); |
|
mutex_exit(softnet_lock); |
|
|
|
} else { |
|
/* |
|
* EINVAL if not a power of 2 |
|
*/ |
|
error = EINVAL; |
|
} |
|
|
|
return error; |
|
} |
|
#endif /* GATEWAY */ |
|
|
|
static int |
static int |
sysctl_net_inet_ip_stats(SYSCTLFN_ARGS) |
sysctl_net_inet_ip_stats(SYSCTLFN_ARGS) |
{ |
{ |
Line 1590 sysctl_net_inet_ip_stats(SYSCTLFN_ARGS) |
|
Line 1605 sysctl_net_inet_ip_stats(SYSCTLFN_ARGS) |
|
static void |
static void |
sysctl_net_inet_ip_setup(struct sysctllog **clog) |
sysctl_net_inet_ip_setup(struct sysctllog **clog) |
{ |
{ |
extern int subnetsarelocal, hostzeroisbroadcast; |
|
|
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_NODE, "net", NULL, |
|
NULL, 0, NULL, 0, |
|
CTL_NET, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT, |
CTLFLAG_PERMANENT, |
CTLTYPE_NODE, "inet", |
CTLTYPE_NODE, "inet", |
Line 1662 sysctl_net_inet_ip_setup(struct sysctllo |
|
Line 1670 sysctl_net_inet_ip_setup(struct sysctllo |
|
NULL, 0, &ip_allowsrcrt, 0, |
NULL, 0, &ip_allowsrcrt, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_ALLOWSRCRT, CTL_EOL); |
IPCTL_ALLOWSRCRT, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "subnetsarelocal", |
|
SYSCTL_DESCR("Whether logical subnets are considered " |
|
"local"), |
|
NULL, 0, &subnetsarelocal, 0, |
|
CTL_NET, PF_INET, IPPROTO_IP, |
|
IPCTL_SUBNETSARELOCAL, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "mtudisc", |
CTLTYPE_INT, "mtudisc", |
Line 1698 sysctl_net_inet_ip_setup(struct sysctllo |
|
Line 1699 sysctl_net_inet_ip_setup(struct sysctllo |
|
sysctl_net_inet_ip_pmtudto, 0, (void *)&ip_mtudisc_timeout, 0, |
sysctl_net_inet_ip_pmtudto, 0, (void *)&ip_mtudisc_timeout, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_MTUDISCTIMEOUT, CTL_EOL); |
IPCTL_MTUDISCTIMEOUT, CTL_EOL); |
#ifdef GATEWAY |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "maxflows", |
|
SYSCTL_DESCR("Number of flows for fast forwarding"), |
|
sysctl_net_inet_ip_maxflows, 0, &ip_maxflows, 0, |
|
CTL_NET, PF_INET, IPPROTO_IP, |
|
IPCTL_MAXFLOWS, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "hashsize", |
|
SYSCTL_DESCR("Size of hash table for fast forwarding (IPv4)"), |
|
sysctl_net_inet_ip_hashsize, 0, &ip_hashsize, 0, |
|
CTL_NET, PF_INET, IPPROTO_IP, |
|
CTL_CREATE, CTL_EOL); |
|
#endif /* GATEWAY */ |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "hostzerobroadcast", |
|
SYSCTL_DESCR("All zeroes address is broadcast address"), |
|
NULL, 0, &hostzeroisbroadcast, 0, |
|
CTL_NET, PF_INET, IPPROTO_IP, |
|
IPCTL_HOSTZEROBROADCAST, CTL_EOL); |
|
#if NGIF > 0 |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "gifttl", |
|
SYSCTL_DESCR("Default TTL for a gif tunnel datagram"), |
|
NULL, 0, &ip_gif_ttl, 0, |
|
CTL_NET, PF_INET, IPPROTO_IP, |
|
IPCTL_GIF_TTL, CTL_EOL); |
|
#endif /* NGIF */ |
|
#ifndef IPNOPRIVPORTS |
#ifndef IPNOPRIVPORTS |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
Line 1786 sysctl_net_inet_ip_setup(struct sysctllo |
|
Line 1755 sysctl_net_inet_ip_setup(struct sysctllo |
|
sysctl_net_inet_ip_stats, 0, NULL, 0, |
sysctl_net_inet_ip_stats, 0, NULL, 0, |
CTL_NET, PF_INET, IPPROTO_IP, IPCTL_STATS, |
CTL_NET, PF_INET, IPPROTO_IP, IPCTL_STATS, |
CTL_EOL); |
CTL_EOL); |
|
#if NARP |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "dad_count", |
|
SYSCTL_DESCR("Number of Duplicate Address Detection " |
|
"probes to send"), |
|
NULL, 0, &ip_dad_count, 0, |
|
CTL_NET, PF_INET, IPPROTO_IP, |
|
IPCTL_DAD_COUNT, CTL_EOL); |
|
#endif |
|
|
/* anonportalgo RFC6056 subtree */ |
/* anonportalgo RFC6056 subtree */ |
const struct sysctlnode *portalgo_node; |
const struct sysctlnode *portalgo_node; |