version 1.199, 2004/04/22 01:01:41 |
version 1.262.6.2, 2008/06/02 13:24:24 |
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* 2. Redistributions in binary form must reproduce the above copyright |
* 2. Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* documentation and/or other materials provided with the distribution. |
* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed by the NetBSD |
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* Foundation, Inc. and its contributors. |
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* 4. Neither the name of The NetBSD Foundation nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
* |
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
Line 121 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 114 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include <sys/kernel.h> |
#include <sys/kernel.h> |
#include <sys/pool.h> |
#include <sys/pool.h> |
#include <sys/sysctl.h> |
#include <sys/sysctl.h> |
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#include <sys/kauth.h> |
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#include <net/if.h> |
#include <net/if.h> |
#include <net/if_dl.h> |
#include <net/if_dl.h> |
Line 131 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 125 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include <netinet/in_systm.h> |
#include <netinet/in_systm.h> |
#include <netinet/ip.h> |
#include <netinet/ip.h> |
#include <netinet/in_pcb.h> |
#include <netinet/in_pcb.h> |
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#include <netinet/in_proto.h> |
#include <netinet/in_var.h> |
#include <netinet/in_var.h> |
#include <netinet/ip_var.h> |
#include <netinet/ip_var.h> |
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#include <netinet/ip_private.h> |
#include <netinet/ip_icmp.h> |
#include <netinet/ip_icmp.h> |
/* just for gif_ttl */ |
/* just for gif_ttl */ |
#include <netinet/in_gif.h> |
#include <netinet/in_gif.h> |
Line 146 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 142 __KERNEL_RCSID(0, "$NetBSD$"); |
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#ifdef IPSEC |
#ifdef IPSEC |
#include <netinet6/ipsec.h> |
#include <netinet6/ipsec.h> |
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#include <netinet6/ipsec_private.h> |
#include <netkey/key.h> |
#include <netkey/key.h> |
#endif |
#endif |
#ifdef FAST_IPSEC |
#ifdef FAST_IPSEC |
Line 222 struct rttimer_queue *ip_mtudisc_timeout |
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Line 219 struct rttimer_queue *ip_mtudisc_timeout |
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int ipqmaxlen = IFQ_MAXLEN; |
int ipqmaxlen = IFQ_MAXLEN; |
u_long in_ifaddrhash; /* size of hash table - 1 */ |
u_long in_ifaddrhash; /* size of hash table - 1 */ |
int in_ifaddrentries; /* total number of addrs */ |
int in_ifaddrentries; /* total number of addrs */ |
struct in_ifaddrhead in_ifaddrhead; |
struct in_ifaddrhead in_ifaddrhead; |
struct in_ifaddrhashhead *in_ifaddrhashtbl; |
struct in_ifaddrhashhead *in_ifaddrhashtbl; |
u_long in_multihash; /* size of hash table - 1 */ |
u_long in_multihash; /* size of hash table - 1 */ |
int in_multientries; /* total number of addrs */ |
int in_multientries; /* total number of addrs */ |
struct in_multihashhead *in_multihashtbl; |
struct in_multihashhead *in_multihashtbl; |
struct ifqueue ipintrq; |
struct ifqueue ipintrq; |
struct ipstat ipstat; |
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uint16_t ip_id; |
uint16_t ip_id; |
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percpu_t *ipstat_percpu; |
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#ifdef PFIL_HOOKS |
#ifdef PFIL_HOOKS |
struct pfil_head inet_pfil_hook; |
struct pfil_head inet_pfil_hook; |
#endif |
#endif |
Line 240 struct pfil_head inet_pfil_hook; |
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Line 238 struct pfil_head inet_pfil_hook; |
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* recalculate IP parameters derived from nmbclusters. |
* recalculate IP parameters derived from nmbclusters. |
*/ |
*/ |
static int ip_nmbclusters; /* copy of nmbclusters */ |
static int ip_nmbclusters; /* copy of nmbclusters */ |
static void ip_nmbclusters_changed __P((void)); /* recalc limits */ |
static void ip_nmbclusters_changed(void); /* recalc limits */ |
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#define CHECK_NMBCLUSTER_PARAMS() \ |
#define CHECK_NMBCLUSTER_PARAMS() \ |
do { \ |
do { \ |
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(((((x) & 0xF) | ((((x) >> 8) & 0xF) << 4)) ^ (y)) & IPREASS_HMASK) |
(((((x) & 0xF) | ((((x) >> 8) & 0xF) << 4)) ^ (y)) & IPREASS_HMASK) |
struct ipqhead ipq[IPREASS_NHASH]; |
struct ipqhead ipq[IPREASS_NHASH]; |
int ipq_locked; |
int ipq_locked; |
static int ip_nfragpackets; /* packets in reass queue */ |
static int ip_nfragpackets; /* packets in reass queue */ |
static int ip_nfrags; /* total fragments in reass queues */ |
static int ip_nfrags; /* total fragments in reass queues */ |
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int ip_maxfragpackets = 200; /* limit on packets. XXX sysctl */ |
int ip_maxfragpackets = 200; /* limit on packets. XXX sysctl */ |
Line 266 int ip_maxfrags; /* limit on fr |
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Line 264 int ip_maxfrags; /* limit on fr |
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/* |
/* |
* Additive-Increase/Multiplicative-Decrease (AIMD) strategy for |
* Additive-Increase/Multiplicative-Decrease (AIMD) strategy for |
* IP reassembly queue buffer managment. |
* IP reassembly queue buffer managment. |
* |
* |
* We keep a count of total IP fragments (NB: not fragmented packets!) |
* We keep a count of total IP fragments (NB: not fragmented packets!) |
* awaiting reassembly (ip_nfrags) and a limit (ip_maxfrags) on fragments. |
* awaiting reassembly (ip_nfrags) and a limit (ip_maxfrags) on fragments. |
* If ip_nfrags exceeds ip_maxfrags the limit, we drop half the |
* If ip_nfrags exceeds ip_maxfrags the limit, we drop half the |
Line 274 int ip_maxfrags; /* limit on fr |
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Line 272 int ip_maxfrags; /* limit on fr |
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* repeatedly deleting single packets under heavy fragmentation load |
* repeatedly deleting single packets under heavy fragmentation load |
* (e.g., from lossy NFS peers). |
* (e.g., from lossy NFS peers). |
*/ |
*/ |
static u_int ip_reass_ttl_decr __P((u_int ticks)); |
static u_int ip_reass_ttl_decr(u_int ticks); |
static void ip_reass_drophalf __P((void)); |
static void ip_reass_drophalf(void); |
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static __inline int ipq_lock_try __P((void)); |
static inline int ipq_lock_try(void); |
static __inline void ipq_unlock __P((void)); |
static inline void ipq_unlock(void); |
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static __inline int |
static inline int |
ipq_lock_try() |
ipq_lock_try(void) |
{ |
{ |
int s; |
int s; |
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return (1); |
return (1); |
} |
} |
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static __inline void |
static inline void |
ipq_unlock() |
ipq_unlock(void) |
{ |
{ |
int s; |
int s; |
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#define IPQ_UNLOCK() ipq_unlock() |
#define IPQ_UNLOCK() ipq_unlock() |
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struct pool inmulti_pool; |
POOL_INIT(inmulti_pool, sizeof(struct in_multi), 0, 0, 0, "inmltpl", NULL, |
struct pool ipqent_pool; |
IPL_SOFTNET); |
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POOL_INIT(ipqent_pool, sizeof(struct ipqent), 0, 0, 0, "ipqepl", NULL, |
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IPL_VM); |
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#ifdef INET_CSUM_COUNTERS |
#ifdef INET_CSUM_COUNTERS |
#include <sys/device.h> |
#include <sys/device.h> |
Line 347 struct evcnt ip_swcsum = EVCNT_INITIALIZ |
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Line 347 struct evcnt ip_swcsum = EVCNT_INITIALIZ |
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#define INET_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ |
#define INET_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ |
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EVCNT_ATTACH_STATIC(ip_hwcsum_bad); |
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EVCNT_ATTACH_STATIC(ip_hwcsum_ok); |
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EVCNT_ATTACH_STATIC(ip_swcsum); |
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#else |
#else |
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#define INET_CSUM_COUNTER_INCR(ev) /* nothing */ |
#define INET_CSUM_COUNTER_INCR(ev) /* nothing */ |
Line 368 static struct ip_srcrt { |
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Line 372 static struct ip_srcrt { |
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struct in_addr route[MAX_IPOPTLEN/sizeof(struct in_addr)]; |
struct in_addr route[MAX_IPOPTLEN/sizeof(struct in_addr)]; |
} ip_srcrt; |
} ip_srcrt; |
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static void save_rte __P((u_char *, struct in_addr)); |
static void save_rte(u_char *, struct in_addr); |
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#ifdef MBUFTRACE |
#ifdef MBUFTRACE |
struct mowner ip_rx_mowner = { "internet", "rx" }; |
struct mowner ip_rx_mowner = MOWNER_INIT("internet", "rx"); |
struct mowner ip_tx_mowner = { "internet", "tx" }; |
struct mowner ip_tx_mowner = MOWNER_INIT("internet", "tx"); |
#endif |
#endif |
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/* |
/* |
Line 390 ip_nmbclusters_changed(void) |
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Line 394 ip_nmbclusters_changed(void) |
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* All protocols not implemented in kernel go to raw IP protocol handler. |
* All protocols not implemented in kernel go to raw IP protocol handler. |
*/ |
*/ |
void |
void |
ip_init() |
ip_init(void) |
{ |
{ |
const struct protosw *pr; |
const struct protosw *pr; |
int i; |
int i; |
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pool_init(&inmulti_pool, sizeof(struct in_multi), 0, 0, 0, "inmltpl", |
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NULL); |
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pool_init(&ipqent_pool, sizeof(struct ipqent), 0, 0, 0, "ipqepl", |
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NULL); |
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pr = pffindproto(PF_INET, IPPROTO_RAW, SOCK_RAW); |
pr = pffindproto(PF_INET, IPPROTO_RAW, SOCK_RAW); |
if (pr == 0) |
if (pr == 0) |
panic("ip_init"); |
panic("ip_init"); |
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for (i = 0; i < IPREASS_NHASH; i++) |
for (i = 0; i < IPREASS_NHASH; i++) |
LIST_INIT(&ipq[i]); |
LIST_INIT(&ipq[i]); |
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ip_id = time.tv_sec & 0xfffff; |
ip_initid(); |
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ip_id = time_second & 0xfffff; |
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ipintrq.ifq_maxlen = ipqmaxlen; |
ipintrq.ifq_maxlen = ipqmaxlen; |
ip_nmbclusters_changed(); |
ip_nmbclusters_changed(); |
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TAILQ_INIT(&in_ifaddrhead); |
TAILQ_INIT(&in_ifaddrhead); |
in_ifaddrhashtbl = hashinit(IN_IFADDR_HASH_SIZE, HASH_LIST, M_IFADDR, |
in_ifaddrhashtbl = hashinit(IN_IFADDR_HASH_SIZE, HASH_LIST, true, |
M_WAITOK, &in_ifaddrhash); |
&in_ifaddrhash); |
in_multihashtbl = hashinit(IN_IFADDR_HASH_SIZE, HASH_LIST, M_IPMADDR, |
in_multihashtbl = hashinit(IN_IFADDR_HASH_SIZE, HASH_LIST, true, |
M_WAITOK, &in_multihash); |
&in_multihash); |
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(); |
ipflow_init(ip_hashsize); |
#endif |
#endif |
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#ifdef PFIL_HOOKS |
#ifdef PFIL_HOOKS |
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"error %d\n", i); |
"error %d\n", i); |
#endif /* PFIL_HOOKS */ |
#endif /* PFIL_HOOKS */ |
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#ifdef INET_CSUM_COUNTERS |
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evcnt_attach_static(&ip_hwcsum_bad); |
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evcnt_attach_static(&ip_hwcsum_ok); |
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evcnt_attach_static(&ip_swcsum); |
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#endif /* INET_CSUM_COUNTERS */ |
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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 /* MBUFTRACE */ |
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ipstat_percpu = percpu_alloc(sizeof(uint64_t) * IP_NSTATS); |
} |
} |
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struct sockaddr_in ipaddr = { sizeof(ipaddr), AF_INET }; |
struct sockaddr_in ipaddr = { |
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.sin_len = sizeof(ipaddr), |
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.sin_family = AF_INET, |
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}; |
struct route ipforward_rt; |
struct route ipforward_rt; |
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/* |
/* |
* IP software interrupt routine |
* IP software interrupt routine |
*/ |
*/ |
void |
void |
ipintr() |
ipintr(void) |
{ |
{ |
int s; |
int s; |
struct mbuf *m; |
struct mbuf *m; |
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while (1) { |
mutex_enter(softnet_lock); |
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KERNEL_LOCK(1, NULL); |
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while (!IF_IS_EMPTY(&ipintrq)) { |
s = splnet(); |
s = splnet(); |
IF_DEQUEUE(&ipintrq, m); |
IF_DEQUEUE(&ipintrq, m); |
splx(s); |
splx(s); |
if (m == 0) |
if (m == NULL) |
return; |
break; |
MCLAIM(m, &ip_rx_mowner); |
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ip_input(m); |
ip_input(m); |
} |
} |
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KERNEL_UNLOCK_ONE(NULL); |
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mutex_exit(softnet_lock); |
} |
} |
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/* |
/* |
Line 490 ip_input(struct mbuf *m) |
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Line 492 ip_input(struct mbuf *m) |
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int downmatch; |
int downmatch; |
int checkif; |
int checkif; |
int srcrt = 0; |
int srcrt = 0; |
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int s; |
u_int hash; |
u_int hash; |
#ifdef FAST_IPSEC |
#ifdef FAST_IPSEC |
struct m_tag *mtag; |
struct m_tag *mtag; |
struct tdb_ident *tdbi; |
struct tdb_ident *tdbi; |
struct secpolicy *sp; |
struct secpolicy *sp; |
int s, error; |
int error; |
#endif /* FAST_IPSEC */ |
#endif /* FAST_IPSEC */ |
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MCLAIM(m, &ip_rx_mowner); |
MCLAIM(m, &ip_rx_mowner); |
Line 510 ip_input(struct mbuf *m) |
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Line 513 ip_input(struct mbuf *m) |
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*/ |
*/ |
if (TAILQ_FIRST(&in_ifaddrhead) == 0) |
if (TAILQ_FIRST(&in_ifaddrhead) == 0) |
goto bad; |
goto bad; |
ipstat.ips_total++; |
IP_STATINC(IP_STAT_TOTAL); |
/* |
/* |
* 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 |
* it. Otherwise, if it is aligned, make sure the entire |
* it. Otherwise, if it is aligned, make sure the entire |
* base IP header is in the first mbuf of the chain. |
* base IP header is in the first mbuf of the chain. |
*/ |
*/ |
if (IP_HDR_ALIGNED_P(mtod(m, caddr_t)) == 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 */ |
ipstat.ips_toosmall++; |
IP_STATINC(IP_STAT_TOOSMALL); |
return; |
return; |
} |
} |
} 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) { |
ipstat.ips_toosmall++; |
IP_STATINC(IP_STAT_TOOSMALL); |
return; |
return; |
} |
} |
} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
if (ip->ip_v != IPVERSION) { |
if (ip->ip_v != IPVERSION) { |
ipstat.ips_badvers++; |
IP_STATINC(IP_STAT_BADVERS); |
goto bad; |
goto bad; |
} |
} |
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 */ |
ipstat.ips_badhlen++; |
IP_STATINC(IP_STAT_BADHLEN); |
goto bad; |
goto bad; |
} |
} |
if (hlen > m->m_len) { |
if (hlen > m->m_len) { |
if ((m = m_pullup(m, hlen)) == 0) { |
if ((m = m_pullup(m, hlen)) == 0) { |
ipstat.ips_badhlen++; |
IP_STATINC(IP_STAT_BADHLEN); |
return; |
return; |
} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
Line 553 ip_input(struct mbuf *m) |
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Line 556 ip_input(struct mbuf *m) |
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* not allowed. |
* not allowed. |
*/ |
*/ |
if (IN_MULTICAST(ip->ip_src.s_addr)) { |
if (IN_MULTICAST(ip->ip_src.s_addr)) { |
ipstat.ips_badaddr++; |
IP_STATINC(IP_STAT_BADADDR); |
goto bad; |
goto bad; |
} |
} |
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Line 561 ip_input(struct mbuf *m) |
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Line 564 ip_input(struct mbuf *m) |
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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 ((m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) == 0) { |
ipstat.ips_badaddr++; |
IP_STATINC(IP_STAT_BADADDR); |
goto bad; |
goto bad; |
} |
} |
} |
} |
Line 579 ip_input(struct mbuf *m) |
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Line 582 ip_input(struct mbuf *m) |
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break; |
break; |
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default: |
default: |
/* Must compute it ourselves. */ |
/* |
INET_CSUM_COUNTER_INCR(&ip_swcsum); |
* Must compute it ourselves. Maybe skip checksum on |
if (in_cksum(m, hlen) != 0) |
* loopback interfaces. |
goto bad; |
*/ |
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if (__predict_true(!(m->m_pkthdr.rcvif->if_flags & |
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IFF_LOOPBACK) || ip_do_loopback_cksum)) { |
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INET_CSUM_COUNTER_INCR(&ip_swcsum); |
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if (in_cksum(m, hlen) != 0) |
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goto badcsum; |
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} |
break; |
break; |
} |
} |
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Line 593 ip_input(struct mbuf *m) |
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Line 602 ip_input(struct mbuf *m) |
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* Check for additional length bogosity |
* Check for additional length bogosity |
*/ |
*/ |
if (len < hlen) { |
if (len < hlen) { |
ipstat.ips_badlen++; |
IP_STATINC(IP_STAT_BADLEN); |
goto bad; |
goto bad; |
} |
} |
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Line 604 ip_input(struct mbuf *m) |
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Line 613 ip_input(struct mbuf *m) |
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* 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) { |
ipstat.ips_tooshort++; |
IP_STATINC(IP_STAT_TOOSHORT); |
goto bad; |
goto bad; |
} |
} |
if (m->m_pkthdr.len > len) { |
if (m->m_pkthdr.len > len) { |
Line 656 ip_input(struct mbuf *m) |
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Line 665 ip_input(struct mbuf *m) |
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return; |
return; |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
hlen = ip->ip_hl << 2; |
hlen = ip->ip_hl << 2; |
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/* |
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* XXX The setting of "srcrt" here is to prevent ip_forward() |
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* from generating ICMP redirects for packets that have |
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* been redirected by a hook back out on to the same LAN that |
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* they came from and is not an indication that the packet |
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* is being inffluenced by source routing options. This |
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* allows things like |
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* "rdr tlp0 0/0 port 80 -> 1.1.1.200 3128 tcp" |
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* where tlp0 is both on the 1.1.1.0/24 network and is the |
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* default route for hosts on 1.1.1.0/24. Of course this |
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* also requires a "map tlp0 ..." to complete the story. |
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* One might argue whether or not this kind of network config. |
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* should be supported in this manner... |
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*/ |
srcrt = (odst.s_addr != ip->ip_dst.s_addr); |
srcrt = (odst.s_addr != ip->ip_dst.s_addr); |
} |
} |
#endif /* PFIL_HOOKS */ |
#endif /* PFIL_HOOKS */ |
Line 718 ip_input(struct mbuf *m) |
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Line 741 ip_input(struct mbuf *m) |
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} |
} |
if (ia != NULL) |
if (ia != NULL) |
goto ours; |
goto ours; |
if (m->m_pkthdr.rcvif->if_flags & IFF_BROADCAST) { |
if (m->m_pkthdr.rcvif && m->m_pkthdr.rcvif->if_flags & IFF_BROADCAST) { |
TAILQ_FOREACH(ifa, &m->m_pkthdr.rcvif->if_addrlist, ifa_list) { |
IFADDR_FOREACH(ifa, m->m_pkthdr.rcvif) { |
if (ifa->ifa_addr->sa_family != AF_INET) |
if (ifa->ifa_addr->sa_family != AF_INET) |
continue; |
continue; |
ia = ifatoia(ifa); |
ia = ifatoia(ifa); |
Line 745 ip_input(struct mbuf *m) |
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Line 768 ip_input(struct mbuf *m) |
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#ifdef MROUTING |
#ifdef MROUTING |
extern struct socket *ip_mrouter; |
extern struct socket *ip_mrouter; |
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|
if (M_READONLY(m)) { |
|
if ((m = m_pullup(m, hlen)) == 0) { |
|
ipstat.ips_toosmall++; |
|
return; |
|
} |
|
ip = mtod(m, struct ip *); |
|
} |
|
|
|
if (ip_mrouter) { |
if (ip_mrouter) { |
/* |
/* |
* If we are acting as a multicast router, all |
* If we are acting as a multicast router, all |
Line 767 ip_input(struct mbuf *m) |
|
Line 782 ip_input(struct mbuf *m) |
|
* ip_output().) |
* ip_output().) |
*/ |
*/ |
if (ip_mforward(m, m->m_pkthdr.rcvif) != 0) { |
if (ip_mforward(m, m->m_pkthdr.rcvif) != 0) { |
ipstat.ips_cantforward++; |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
m_freem(m); |
return; |
return; |
} |
} |
Line 779 ip_input(struct mbuf *m) |
|
Line 794 ip_input(struct mbuf *m) |
|
*/ |
*/ |
if (ip->ip_p == IPPROTO_IGMP) |
if (ip->ip_p == IPPROTO_IGMP) |
goto ours; |
goto ours; |
ipstat.ips_forward++; |
IP_STATINC(IP_STAT_CANTFORWARD); |
} |
} |
#endif |
#endif |
/* |
/* |
Line 788 ip_input(struct mbuf *m) |
|
Line 803 ip_input(struct mbuf *m) |
|
*/ |
*/ |
IN_LOOKUP_MULTI(ip->ip_dst, m->m_pkthdr.rcvif, inm); |
IN_LOOKUP_MULTI(ip->ip_dst, m->m_pkthdr.rcvif, inm); |
if (inm == NULL) { |
if (inm == NULL) { |
ipstat.ips_cantforward++; |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
m_freem(m); |
return; |
return; |
} |
} |
Line 802 ip_input(struct mbuf *m) |
|
Line 817 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) { |
ipstat.ips_cantforward++; |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
m_freem(m); |
} else { |
} else { |
/* |
/* |
Line 813 ip_input(struct mbuf *m) |
|
Line 828 ip_input(struct mbuf *m) |
|
*/ |
*/ |
if (downmatch) { |
if (downmatch) { |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_HOST, 0, 0); |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_HOST, 0, 0); |
ipstat.ips_cantforward++; |
IP_STATINC(IP_STAT_CANTFORWARD); |
return; |
return; |
} |
} |
#ifdef IPSEC |
#ifdef IPSEC |
if (ipsec4_in_reject(m, NULL)) { |
if (ipsec4_in_reject(m, NULL)) { |
ipsecstat.in_polvio++; |
IPSEC_STATINC(IPSEC_STAT_IN_POLVIO); |
goto bad; |
goto bad; |
} |
} |
#endif |
#endif |
Line 830 ip_input(struct mbuf *m) |
|
Line 845 ip_input(struct mbuf *m) |
|
sp = ipsec_getpolicy(tdbi, IPSEC_DIR_INBOUND); |
sp = ipsec_getpolicy(tdbi, IPSEC_DIR_INBOUND); |
} else { |
} else { |
sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND, |
sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND, |
IP_FORWARDING, &error); |
IP_FORWARDING, &error); |
} |
} |
if (sp == NULL) { /* NB: can happen if error */ |
if (sp == NULL) { /* NB: can happen if error */ |
splx(s); |
splx(s); |
Line 846 ip_input(struct mbuf *m) |
|
Line 861 ip_input(struct mbuf *m) |
|
KEY_FREESP(&sp); |
KEY_FREESP(&sp); |
splx(s); |
splx(s); |
if (error) { |
if (error) { |
ipstat.ips_cantforward++; |
IP_STATINC(IP_STAT_CANTFORWARD); |
goto bad; |
goto bad; |
} |
} |
|
|
|
|
* but it's not worth the time; just let them time out.) |
* but it's not worth the time; just let them time out.) |
*/ |
*/ |
if (ip->ip_off & ~htons(IP_DF|IP_RF)) { |
if (ip->ip_off & ~htons(IP_DF|IP_RF)) { |
if (M_READONLY(m)) { |
uint16_t off; |
if ((m = m_pullup(m, hlen)) == NULL) { |
/* |
ipstat.ips_toosmall++; |
* Prevent TCP blind data attacks by not allowing non-initial |
goto bad; |
* fragments to start at less than 68 bytes (minimal fragment |
} |
* size) and making sure the first fragment is at least 68 |
ip = mtod(m, struct ip *); |
* bytes. |
|
*/ |
|
off = (ntohs(ip->ip_off) & IP_OFFMASK) << 3; |
|
if ((off > 0 ? off + hlen : len) < IP_MINFRAGSIZE - 1) { |
|
IP_STATINC(IP_STAT_BADFRAGS); |
|
goto bad; |
} |
} |
|
|
/* |
/* |
* Look for queue of fragments |
* Look for queue of fragments |
* of this datagram. |
* of this datagram. |
*/ |
*/ |
IPQ_LOCK(); |
IPQ_LOCK(); |
hash = IPREASS_HASH(ip->ip_src.s_addr, ip->ip_id); |
hash = IPREASS_HASH(ip->ip_src.s_addr, ip->ip_id); |
/* XXX LIST_FOREACH(fp, &ipq[hash], ipq_q) */ |
LIST_FOREACH(fp, &ipq[hash], ipq_q) { |
for (fp = LIST_FIRST(&ipq[hash]); fp != NULL; |
|
fp = LIST_NEXT(fp, ipq_q)) { |
|
if (ip->ip_id == fp->ipq_id && |
if (ip->ip_id == fp->ipq_id && |
in_hosteq(ip->ip_src, fp->ipq_src) && |
in_hosteq(ip->ip_src, fp->ipq_src) && |
in_hosteq(ip->ip_dst, fp->ipq_dst) && |
in_hosteq(ip->ip_dst, fp->ipq_dst) && |
ip->ip_p == fp->ipq_p) |
ip->ip_p == fp->ipq_p) { |
|
/* |
|
* Make sure the TOS is matches previous |
|
* fragments. |
|
*/ |
|
if (ip->ip_tos != fp->ipq_tos) { |
|
IP_STATINC(IP_STAT_BADFRAGS); |
|
goto bad; |
|
} |
goto found; |
goto found; |
|
} |
} |
} |
fp = 0; |
fp = 0; |
found: |
found: |
|
|
*/ |
*/ |
if (ntohs(ip->ip_len) == 0 || |
if (ntohs(ip->ip_len) == 0 || |
(ntohs(ip->ip_len) & 0x7) != 0) { |
(ntohs(ip->ip_len) & 0x7) != 0) { |
ipstat.ips_badfrags++; |
IP_STATINC(IP_STAT_BADFRAGS); |
IPQ_UNLOCK(); |
IPQ_UNLOCK(); |
goto bad; |
goto bad; |
} |
} |
|
|
* attempt reassembly; if it succeeds, proceed. |
* attempt reassembly; if it succeeds, proceed. |
*/ |
*/ |
if (mff || ip->ip_off != htons(0)) { |
if (mff || ip->ip_off != htons(0)) { |
ipstat.ips_fragments++; |
IP_STATINC(IP_STAT_FRAGMENTS); |
|
s = splvm(); |
ipqe = pool_get(&ipqent_pool, PR_NOWAIT); |
ipqe = pool_get(&ipqent_pool, PR_NOWAIT); |
|
splx(s); |
if (ipqe == NULL) { |
if (ipqe == NULL) { |
ipstat.ips_rcvmemdrop++; |
IP_STATINC(IP_STAT_RCVMEMDROP); |
IPQ_UNLOCK(); |
IPQ_UNLOCK(); |
goto bad; |
goto bad; |
} |
} |
|
|
IPQ_UNLOCK(); |
IPQ_UNLOCK(); |
return; |
return; |
} |
} |
ipstat.ips_reassembled++; |
IP_STATINC(IP_STAT_REASSEMBLED); |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
hlen = ip->ip_hl << 2; |
hlen = ip->ip_hl << 2; |
ip->ip_len = htons(ntohs(ip->ip_len) + hlen); |
ip->ip_len = htons(ntohs(ip->ip_len) + hlen); |
|
|
*/ |
*/ |
if ((inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0 && |
if ((inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0 && |
ipsec4_in_reject(m, NULL)) { |
ipsec4_in_reject(m, NULL)) { |
ipsecstat.in_polvio++; |
IPSEC_STATINC(IPSEC_STAT_IN_POLVIO); |
goto bad; |
goto bad; |
} |
} |
#endif |
#endif |
#if FAST_IPSEC |
#ifdef FAST_IPSEC |
/* |
/* |
* enforce IPsec policy checking if we are seeing last header. |
* enforce IPsec policy checking if we are seeing last header. |
* note that we do not visit this with protocols with pcb layer |
* note that we do not visit this with protocols with pcb layer |
|
|
* done. If so, then just pass it along. This tag gets |
* done. If so, then just pass it along. This tag gets |
* set during AH, ESP, etc. input handling, before the |
* set during AH, ESP, etc. input handling, before the |
* packet is returned to the ip input queue for delivery. |
* packet is returned to the ip input queue for delivery. |
*/ |
*/ |
mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_DONE, NULL); |
mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_DONE, NULL); |
s = splsoftnet(); |
s = splsoftnet(); |
if (mtag != NULL) { |
if (mtag != NULL) { |
|
|
sp = ipsec_getpolicy(tdbi, IPSEC_DIR_INBOUND); |
sp = ipsec_getpolicy(tdbi, IPSEC_DIR_INBOUND); |
} else { |
} else { |
sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND, |
sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND, |
IP_FORWARDING, &error); |
IP_FORWARDING, &error); |
} |
} |
if (sp != NULL) { |
if (sp != NULL) { |
/* |
/* |
|
|
/* XXX error stat??? */ |
/* XXX error stat??? */ |
error = EINVAL; |
error = EINVAL; |
DPRINTF(("ip_input: no SP, packet discarded\n"));/*XXX*/ |
DPRINTF(("ip_input: no SP, packet discarded\n"));/*XXX*/ |
goto bad; |
|
} |
} |
splx(s); |
splx(s); |
if (error) |
if (error) |
Line 1022 DPRINTF(("ip_input: no SP, packet discar |
|
Line 1048 DPRINTF(("ip_input: no SP, packet discar |
|
if (ia && ip) |
if (ia && ip) |
ia->ia_ifa.ifa_data.ifad_inbytes += ntohs(ip->ip_len); |
ia->ia_ifa.ifa_data.ifad_inbytes += ntohs(ip->ip_len); |
#endif |
#endif |
ipstat.ips_delivered++; |
IP_STATINC(IP_STAT_DELIVERED); |
{ |
{ |
int off = hlen, nh = ip->ip_p; |
int off = hlen, nh = ip->ip_p; |
|
|
|
|
return; |
return; |
|
|
badcsum: |
badcsum: |
ipstat.ips_badsum++; |
IP_STATINC(IP_STAT_BADSUM); |
m_freem(m); |
m_freem(m); |
} |
} |
|
|
|
|
* is given as fp; otherwise have to make a chain. |
* is given as fp; otherwise have to make a chain. |
*/ |
*/ |
struct mbuf * |
struct mbuf * |
ip_reass(ipqe, fp, ipqhead) |
ip_reass(struct ipqent *ipqe, struct ipq *fp, struct ipqhead *ipqhead) |
struct ipqent *ipqe; |
|
struct ipq *fp; |
|
struct ipqhead *ipqhead; |
|
{ |
{ |
struct mbuf *m = ipqe->ipqe_m; |
struct mbuf *m = ipqe->ipqe_m; |
struct ipqent *nq, *p, *q; |
struct ipqent *nq, *p, *q; |
struct ip *ip; |
struct ip *ip; |
struct mbuf *t; |
struct mbuf *t; |
int hlen = ipqe->ipqe_ip->ip_hl << 2; |
int hlen = ipqe->ipqe_ip->ip_hl << 2; |
int i, next; |
int i, next, s; |
|
|
IPQ_LOCK_CHECK(); |
IPQ_LOCK_CHECK(); |
|
|
Line 1079 ip_reass(ipqe, fp, ipqhead) |
|
Line 1102 ip_reass(ipqe, fp, ipqhead) |
|
* We are about to add a fragment; increment frag count. |
* We are about to add a fragment; increment frag count. |
*/ |
*/ |
ip_nfrags++; |
ip_nfrags++; |
|
|
/* |
/* |
* If first fragment to arrive, create a reassembly queue. |
* If first fragment to arrive, create a reassembly queue. |
*/ |
*/ |
Line 1104 ip_reass(ipqe, fp, ipqhead) |
|
Line 1127 ip_reass(ipqe, fp, ipqhead) |
|
fp->ipq_ttl = IPFRAGTTL; |
fp->ipq_ttl = IPFRAGTTL; |
fp->ipq_p = ipqe->ipqe_ip->ip_p; |
fp->ipq_p = ipqe->ipqe_ip->ip_p; |
fp->ipq_id = ipqe->ipqe_ip->ip_id; |
fp->ipq_id = ipqe->ipqe_ip->ip_id; |
|
fp->ipq_tos = ipqe->ipqe_ip->ip_tos; |
TAILQ_INIT(&fp->ipq_fragq); |
TAILQ_INIT(&fp->ipq_fragq); |
fp->ipq_src = ipqe->ipqe_ip->ip_src; |
fp->ipq_src = ipqe->ipqe_ip->ip_src; |
fp->ipq_dst = ipqe->ipqe_ip->ip_dst; |
fp->ipq_dst = ipqe->ipqe_ip->ip_dst; |
Line 1160 ip_reass(ipqe, fp, ipqhead) |
|
Line 1184 ip_reass(ipqe, fp, ipqhead) |
|
nq = TAILQ_NEXT(q, ipqe_q); |
nq = TAILQ_NEXT(q, ipqe_q); |
m_freem(q->ipqe_m); |
m_freem(q->ipqe_m); |
TAILQ_REMOVE(&fp->ipq_fragq, q, ipqe_q); |
TAILQ_REMOVE(&fp->ipq_fragq, q, ipqe_q); |
|
s = splvm(); |
pool_put(&ipqent_pool, q); |
pool_put(&ipqent_pool, q); |
|
splx(s); |
fp->ipq_nfrags--; |
fp->ipq_nfrags--; |
ip_nfrags--; |
ip_nfrags--; |
} |
} |
|
|
q = TAILQ_FIRST(&fp->ipq_fragq); |
q = TAILQ_FIRST(&fp->ipq_fragq); |
ip = q->ipqe_ip; |
ip = q->ipqe_ip; |
if ((next + (ip->ip_hl << 2)) > IP_MAXPACKET) { |
if ((next + (ip->ip_hl << 2)) > IP_MAXPACKET) { |
ipstat.ips_toolong++; |
IP_STATINC(IP_STAT_TOOLONG); |
ip_freef(fp); |
ip_freef(fp); |
return (0); |
return (0); |
} |
} |
|
|
m->m_next = 0; |
m->m_next = 0; |
m_cat(m, t); |
m_cat(m, t); |
nq = TAILQ_NEXT(q, ipqe_q); |
nq = TAILQ_NEXT(q, ipqe_q); |
|
s = splvm(); |
pool_put(&ipqent_pool, q); |
pool_put(&ipqent_pool, q); |
|
splx(s); |
for (q = nq; q != NULL; q = nq) { |
for (q = nq; q != NULL; q = nq) { |
t = q->ipqe_m; |
t = q->ipqe_m; |
nq = TAILQ_NEXT(q, ipqe_q); |
nq = TAILQ_NEXT(q, ipqe_q); |
|
s = splvm(); |
pool_put(&ipqent_pool, q); |
pool_put(&ipqent_pool, q); |
|
splx(s); |
m_cat(m, t); |
m_cat(m, t); |
} |
} |
ip_nfrags -= fp->ipq_nfrags; |
ip_nfrags -= fp->ipq_nfrags; |
|
|
for (t = m; t; t = t->m_next) |
for (t = m; t; t = t->m_next) |
plen += t->m_len; |
plen += t->m_len; |
m->m_pkthdr.len = plen; |
m->m_pkthdr.len = plen; |
|
m->m_pkthdr.csum_flags = 0; |
} |
} |
return (m); |
return (m); |
|
|
|
|
if (fp != 0) |
if (fp != 0) |
fp->ipq_nfrags--; |
fp->ipq_nfrags--; |
ip_nfrags--; |
ip_nfrags--; |
ipstat.ips_fragdropped++; |
IP_STATINC(IP_STAT_FRAGDROPPED); |
m_freem(m); |
m_freem(m); |
|
s = splvm(); |
pool_put(&ipqent_pool, ipqe); |
pool_put(&ipqent_pool, ipqe); |
|
splx(s); |
return (0); |
return (0); |
} |
} |
|
|
|
|
* associated datagrams. |
* associated datagrams. |
*/ |
*/ |
void |
void |
ip_freef(fp) |
ip_freef(struct ipq *fp) |
struct ipq *fp; |
|
{ |
{ |
struct ipqent *q, *p; |
struct ipqent *q, *p; |
u_int nfrags = 0; |
u_int nfrags = 0; |
|
int s; |
|
|
IPQ_LOCK_CHECK(); |
IPQ_LOCK_CHECK(); |
|
|
|
|
m_freem(q->ipqe_m); |
m_freem(q->ipqe_m); |
nfrags++; |
nfrags++; |
TAILQ_REMOVE(&fp->ipq_fragq, q, ipqe_q); |
TAILQ_REMOVE(&fp->ipq_fragq, q, ipqe_q); |
|
s = splvm(); |
pool_put(&ipqent_pool, q); |
pool_put(&ipqent_pool, q); |
|
splx(s); |
} |
} |
|
|
if (nfrags != fp->ipq_nfrags) |
if (nfrags != fp->ipq_nfrags) |
Line 1290 ip_reass_ttl_decr(u_int ticks) |
|
Line 1325 ip_reass_ttl_decr(u_int ticks) |
|
u_int nfrags, median, dropfraction, keepfraction; |
u_int nfrags, median, dropfraction, keepfraction; |
struct ipq *fp, *nfp; |
struct ipq *fp, *nfp; |
int i; |
int i; |
|
|
nfrags = 0; |
nfrags = 0; |
memset(fragttl_histo, 0, sizeof fragttl_histo); |
memset(fragttl_histo, 0, sizeof fragttl_histo); |
|
|
for (i = 0; i < IPREASS_NHASH; i++) { |
for (i = 0; i < IPREASS_NHASH; i++) { |
for (fp = LIST_FIRST(&ipq[i]); fp != NULL; fp = nfp) { |
for (fp = LIST_FIRST(&ipq[i]); fp != NULL; fp = nfp) { |
fp->ipq_ttl = ((fp->ipq_ttl <= ticks) ? |
fp->ipq_ttl = ((fp->ipq_ttl <= ticks) ? |
0 : fp->ipq_ttl - ticks); |
0 : fp->ipq_ttl - ticks); |
nfp = LIST_NEXT(fp, ipq_q); |
nfp = LIST_NEXT(fp, ipq_q); |
if (fp->ipq_ttl == 0) { |
if (fp->ipq_ttl == 0) { |
ipstat.ips_fragtimeout++; |
IP_STATINC(IP_STAT_FRAGTIMEOUT); |
ip_freef(fp); |
ip_freef(fp); |
} else { |
} else { |
nfrags += fp->ipq_nfrags; |
nfrags += fp->ipq_nfrags; |
Line 1346 ip_reass_drophalf(void) |
|
Line 1381 ip_reass_drophalf(void) |
|
* queue, discard it. |
* queue, discard it. |
*/ |
*/ |
void |
void |
ip_slowtimo() |
ip_slowtimo(void) |
{ |
{ |
static u_int dropscanidx = 0; |
static u_int dropscanidx = 0; |
u_int i; |
u_int i; |
u_int median_ttl; |
u_int median_ttl; |
int s = splsoftnet(); |
|
|
mutex_enter(softnet_lock); |
|
KERNEL_LOCK(1, NULL); |
|
|
IPQ_LOCK(); |
IPQ_LOCK(); |
|
|
|
|
dropscanidx = i; |
dropscanidx = i; |
} |
} |
IPQ_UNLOCK(); |
IPQ_UNLOCK(); |
#ifdef GATEWAY |
|
ipflow_slowtimo(); |
KERNEL_UNLOCK_ONE(NULL); |
#endif |
mutex_exit(softnet_lock); |
splx(s); |
|
} |
} |
|
|
/* |
/* |
* Drain off all datagram fragments. |
* Drain off all datagram fragments. Don't acquire softnet_lock as |
|
* can be called from hardware interrupt context. |
*/ |
*/ |
void |
void |
ip_drain() |
ip_drain(void) |
{ |
{ |
|
|
|
KERNEL_LOCK(1, NULL); |
|
|
/* |
/* |
* We may be called from a device's interrupt context. If |
* We may be called from a device's interrupt context. If |
* the ipq is already busy, just bail out now. |
* the ipq is already busy, just bail out now. |
*/ |
*/ |
if (ipq_lock_try() == 0) |
if (ipq_lock_try() != 0) { |
return; |
/* |
|
* Drop half the total fragments now. If more mbufs are |
/* |
* needed, we will be called again soon. |
* Drop half the total fragments now. If more mbufs are needed, |
*/ |
* we will be called again soon. |
ip_reass_drophalf(); |
*/ |
IPQ_UNLOCK(); |
ip_reass_drophalf(); |
} |
|
|
IPQ_UNLOCK(); |
KERNEL_UNLOCK_ONE(NULL); |
} |
} |
|
|
/* |
/* |
|
|
* 0 if the packet should be processed further. |
* 0 if the packet should be processed further. |
*/ |
*/ |
int |
int |
ip_dooptions(m) |
ip_dooptions(struct mbuf *m) |
struct mbuf *m; |
|
{ |
{ |
struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
u_char *cp, *cp0; |
u_char *cp, *cp0; |
Line 1515 ip_dooptions(m) |
|
Line 1553 ip_dooptions(m) |
|
/* |
/* |
* locate outgoing interface |
* locate outgoing interface |
*/ |
*/ |
bcopy((caddr_t)(cp + off), (caddr_t)&ipaddr.sin_addr, |
bcopy((void *)(cp + off), (void *)&ipaddr.sin_addr, |
sizeof(ipaddr.sin_addr)); |
sizeof(ipaddr.sin_addr)); |
if (opt == IPOPT_SSRR) |
if (opt == IPOPT_SSRR) |
ia = ifatoia(ifa_ifwithladdr(sintosa(&ipaddr))); |
ia = ifatoia(ifa_ifwithladdr(sintosa(&ipaddr))); |
Line 1527 ip_dooptions(m) |
|
Line 1565 ip_dooptions(m) |
|
goto bad; |
goto bad; |
} |
} |
ip->ip_dst = ipaddr.sin_addr; |
ip->ip_dst = ipaddr.sin_addr; |
bcopy((caddr_t)&ia->ia_addr.sin_addr, |
bcopy((void *)&ia->ia_addr.sin_addr, |
(caddr_t)(cp + off), sizeof(struct in_addr)); |
(void *)(cp + off), sizeof(struct in_addr)); |
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 1551 ip_dooptions(m) |
|
Line 1589 ip_dooptions(m) |
|
off--; /* 0 origin */ |
off--; /* 0 origin */ |
if ((off + sizeof(struct in_addr)) > optlen) |
if ((off + sizeof(struct in_addr)) > optlen) |
break; |
break; |
bcopy((caddr_t)(&ip->ip_dst), (caddr_t)&ipaddr.sin_addr, |
bcopy((void *)(&ip->ip_dst), (void *)&ipaddr.sin_addr, |
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 1564 ip_dooptions(m) |
|
Line 1602 ip_dooptions(m) |
|
code = ICMP_UNREACH_HOST; |
code = ICMP_UNREACH_HOST; |
goto bad; |
goto bad; |
} |
} |
bcopy((caddr_t)&ia->ia_addr.sin_addr, |
bcopy((void *)&ia->ia_addr.sin_addr, |
(caddr_t)(cp + off), sizeof(struct in_addr)); |
(void *)(cp + off), sizeof(struct in_addr)); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
break; |
break; |
|
|
Line 1634 ip_dooptions(m) |
|
Line 1672 ip_dooptions(m) |
|
} |
} |
ntime = iptime(); |
ntime = iptime(); |
cp0 = (u_char *) &ntime; /* XXX grumble, GCC... */ |
cp0 = (u_char *) &ntime; /* XXX grumble, GCC... */ |
bcopy(cp0, (caddr_t)cp + ipt->ipt_ptr - 1, |
memmove((char *)cp + ipt->ipt_ptr - 1, cp0, |
sizeof(n_time)); |
sizeof(n_time)); |
ipt->ipt_ptr += sizeof(n_time); |
ipt->ipt_ptr += sizeof(n_time); |
} |
} |
Line 1651 ip_dooptions(m) |
|
Line 1689 ip_dooptions(m) |
|
return (0); |
return (0); |
bad: |
bad: |
icmp_error(m, type, code, 0, 0); |
icmp_error(m, type, code, 0, 0); |
ipstat.ips_badoptions++; |
IP_STATINC(IP_STAT_BADOPTIONS); |
return (1); |
return (1); |
} |
} |
|
|
|
|
* 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 * |
struct in_ifaddr * |
ip_rtaddr(dst) |
ip_rtaddr(struct in_addr dst) |
struct in_addr dst; |
|
{ |
{ |
struct sockaddr_in *sin; |
struct rtentry *rt; |
|
union { |
|
struct sockaddr dst; |
|
struct sockaddr_in dst4; |
|
} u; |
|
|
sin = satosin(&ipforward_rt.ro_dst); |
sockaddr_in_init(&u.dst4, &dst, 0); |
|
|
if (ipforward_rt.ro_rt == 0 || !in_hosteq(dst, sin->sin_addr)) { |
if ((rt = rtcache_lookup(&ipforward_rt, &u.dst)) == NULL) |
if (ipforward_rt.ro_rt) { |
return NULL; |
RTFREE(ipforward_rt.ro_rt); |
|
ipforward_rt.ro_rt = 0; |
|
} |
|
sin->sin_family = AF_INET; |
|
sin->sin_len = sizeof(*sin); |
|
sin->sin_addr = dst; |
|
|
|
rtalloc(&ipforward_rt); |
return ifatoia(rt->rt_ifa); |
} |
|
if (ipforward_rt.ro_rt == 0) |
|
return ((struct in_ifaddr *)0); |
|
return (ifatoia(ipforward_rt.ro_rt->rt_ifa)); |
|
} |
} |
|
|
/* |
/* |
|
|
* to be picked up later by ip_srcroute if the receiver is interested. |
* to be picked up later by ip_srcroute if the receiver is interested. |
*/ |
*/ |
void |
void |
save_rte(option, dst) |
save_rte(u_char *option, struct in_addr dst) |
u_char *option; |
|
struct in_addr dst; |
|
{ |
{ |
unsigned olen; |
unsigned olen; |
|
|
Line 1701 save_rte(option, dst) |
|
Line 1730 save_rte(option, dst) |
|
#endif /* 0 */ |
#endif /* 0 */ |
if (olen > sizeof(ip_srcrt) - (1 + sizeof(dst))) |
if (olen > sizeof(ip_srcrt) - (1 + sizeof(dst))) |
return; |
return; |
bcopy((caddr_t)option, (caddr_t)ip_srcrt.srcopt, olen); |
bcopy((void *)option, (void *)ip_srcrt.srcopt, olen); |
ip_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr); |
ip_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr); |
ip_srcrt.dst = dst; |
ip_srcrt.dst = dst; |
} |
} |
Line 1712 save_rte(option, dst) |
|
Line 1741 save_rte(option, dst) |
|
* 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() |
ip_srcroute(void) |
{ |
{ |
struct in_addr *p, *q; |
struct in_addr *p, *q; |
struct mbuf *m; |
struct mbuf *m; |
|
|
if (ip_nhops == 0) |
if (ip_nhops == 0) |
return ((struct mbuf *)0); |
return NULL; |
m = m_get(M_DONTWAIT, MT_SOOPTS); |
m = m_get(M_DONTWAIT, MT_SOOPTS); |
if (m == 0) |
if (m == 0) |
return ((struct mbuf *)0); |
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(ip_srcrt.nop) + sizeof(ip_srcrt.srcopt)) |
|
|
*/ |
*/ |
ip_srcrt.nop = IPOPT_NOP; |
ip_srcrt.nop = IPOPT_NOP; |
ip_srcrt.srcopt[IPOPT_OFFSET] = IPOPT_MINOFF; |
ip_srcrt.srcopt[IPOPT_OFFSET] = IPOPT_MINOFF; |
bcopy((caddr_t)&ip_srcrt.nop, |
memmove(mtod(m, char *) + sizeof(struct in_addr), &ip_srcrt.nop, |
mtod(m, caddr_t) + sizeof(struct in_addr), OPTSIZ); |
OPTSIZ); |
q = (struct in_addr *)(mtod(m, caddr_t) + |
q = (struct in_addr *)(mtod(m, char *) + |
sizeof(struct in_addr) + OPTSIZ); |
sizeof(struct in_addr) + OPTSIZ); |
#undef OPTSIZ |
#undef OPTSIZ |
/* |
/* |
|
|
return (m); |
return (m); |
} |
} |
|
|
/* |
|
* Strip out IP options, at higher |
|
* level protocol in the kernel. |
|
* Second argument is buffer to which options |
|
* will be moved, and return value is their length. |
|
* XXX should be deleted; last arg currently ignored. |
|
*/ |
|
void |
|
ip_stripoptions(m, mopt) |
|
struct mbuf *m; |
|
struct mbuf *mopt; |
|
{ |
|
int i; |
|
struct ip *ip = mtod(m, struct ip *); |
|
caddr_t opts; |
|
int olen; |
|
|
|
olen = (ip->ip_hl << 2) - sizeof (struct ip); |
|
opts = (caddr_t)(ip + 1); |
|
i = m->m_len - (sizeof (struct ip) + olen); |
|
bcopy(opts + olen, opts, (unsigned)i); |
|
m->m_len -= olen; |
|
if (m->m_flags & M_PKTHDR) |
|
m->m_pkthdr.len -= olen; |
|
ip->ip_len = htons(ntohs(ip->ip_len) - olen); |
|
ip->ip_hl = sizeof (struct ip) >> 2; |
|
} |
|
|
|
const int inetctlerrmap[PRC_NCMDS] = { |
const int inetctlerrmap[PRC_NCMDS] = { |
0, 0, 0, 0, |
[PRC_MSGSIZE] = EMSGSIZE, |
0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH, |
[PRC_HOSTDEAD] = EHOSTDOWN, |
EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED, |
[PRC_HOSTUNREACH] = EHOSTUNREACH, |
EMSGSIZE, EHOSTUNREACH, 0, 0, |
[PRC_UNREACH_NET] = EHOSTUNREACH, |
0, 0, 0, 0, |
[PRC_UNREACH_HOST] = EHOSTUNREACH, |
ENOPROTOOPT |
[PRC_UNREACH_PROTOCOL] = ECONNREFUSED, |
|
[PRC_UNREACH_PORT] = ECONNREFUSED, |
|
[PRC_UNREACH_SRCFAIL] = EHOSTUNREACH, |
|
[PRC_PARAMPROB] = ENOPROTOOPT, |
}; |
}; |
|
|
/* |
/* |
Line 1828 const int inetctlerrmap[PRC_NCMDS] = { |
|
Line 1832 const int inetctlerrmap[PRC_NCMDS] = { |
|
* via a source route. |
* via a source route. |
*/ |
*/ |
void |
void |
ip_forward(m, srcrt) |
ip_forward(struct mbuf *m, int srcrt) |
struct mbuf *m; |
|
int srcrt; |
|
{ |
{ |
struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
struct sockaddr_in *sin; |
|
struct rtentry *rt; |
struct rtentry *rt; |
int error, type = 0, code = 0; |
int error, type = 0, code = 0, destmtu = 0; |
struct mbuf *mcopy; |
struct mbuf *mcopy; |
n_long dest; |
n_long dest; |
struct ifnet *destifp; |
union { |
#if defined(IPSEC) || defined(FAST_IPSEC) |
struct sockaddr dst; |
struct ifnet dummyifp; |
struct sockaddr_in dst4; |
#endif |
} u; |
|
|
/* |
/* |
* We are now in the output path. |
* We are now in the output path. |
Line 1855 ip_forward(m, srcrt) |
|
Line 1856 ip_forward(m, srcrt) |
|
|
|
dest = 0; |
dest = 0; |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (ipprintfs) |
if (ipprintfs) { |
printf("forward: src %2.2x dst %2.2x ttl %x\n", |
printf("forward: src %s ", inet_ntoa(ip->ip_src)); |
ntohl(ip->ip_src.s_addr), |
printf("dst %s ttl %x\n", inet_ntoa(ip->ip_dst), ip->ip_ttl); |
ntohl(ip->ip_dst.s_addr), ip->ip_ttl); |
} |
#endif |
#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) { |
ipstat.ips_cantforward++; |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
m_freem(m); |
return; |
return; |
} |
} |
Line 1869 ip_forward(m, srcrt) |
|
Line 1870 ip_forward(m, srcrt) |
|
icmp_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, dest, 0); |
icmp_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, dest, 0); |
return; |
return; |
} |
} |
ip->ip_ttl -= IPTTLDEC; |
|
|
|
sin = satosin(&ipforward_rt.ro_dst); |
sockaddr_in_init(&u.dst4, &ip->ip_dst, 0); |
if ((rt = ipforward_rt.ro_rt) == 0 || |
if ((rt = rtcache_lookup(&ipforward_rt, &u.dst)) == NULL) { |
!in_hosteq(ip->ip_dst, sin->sin_addr)) { |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, dest, 0); |
if (ipforward_rt.ro_rt) { |
return; |
RTFREE(ipforward_rt.ro_rt); |
|
ipforward_rt.ro_rt = 0; |
|
} |
|
sin->sin_family = AF_INET; |
|
sin->sin_len = sizeof(struct sockaddr_in); |
|
sin->sin_addr = ip->ip_dst; |
|
|
|
rtalloc(&ipforward_rt); |
|
if (ipforward_rt.ro_rt == 0) { |
|
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_HOST, dest, 0); |
|
return; |
|
} |
|
rt = ipforward_rt.ro_rt; |
|
} |
} |
|
|
/* |
/* |
Line 1899 ip_forward(m, srcrt) |
|
Line 1886 ip_forward(m, srcrt) |
|
if (mcopy) |
if (mcopy) |
mcopy = m_pullup(mcopy, ip->ip_hl << 2); |
mcopy = m_pullup(mcopy, ip->ip_hl << 2); |
|
|
|
ip->ip_ttl -= IPTTLDEC; |
|
|
/* |
/* |
* If forwarding packet using same interface that it came in on, |
* If forwarding packet using same interface that it came in on, |
* perhaps should send a redirect to sender to shortcut a hop. |
* perhaps should send a redirect to sender to shortcut a hop. |
Line 1909 ip_forward(m, srcrt) |
|
Line 1898 ip_forward(m, srcrt) |
|
*/ |
*/ |
if (rt->rt_ifp == m->m_pkthdr.rcvif && |
if (rt->rt_ifp == m->m_pkthdr.rcvif && |
(rt->rt_flags & (RTF_DYNAMIC|RTF_MODIFIED)) == 0 && |
(rt->rt_flags & (RTF_DYNAMIC|RTF_MODIFIED)) == 0 && |
!in_nullhost(satosin(rt_key(rt))->sin_addr) && |
!in_nullhost(satocsin(rt_getkey(rt))->sin_addr) && |
ipsendredirects && !srcrt) { |
ipsendredirects && !srcrt) { |
if (rt->rt_ifa && |
if (rt->rt_ifa && |
(ip->ip_src.s_addr & ifatoia(rt->rt_ifa)->ia_subnetmask) == |
(ip->ip_src.s_addr & ifatoia(rt->rt_ifa)->ia_subnetmask) == |
Line 1932 ip_forward(m, srcrt) |
|
Line 1921 ip_forward(m, srcrt) |
|
} |
} |
} |
} |
|
|
error = ip_output(m, (struct mbuf *)0, &ipforward_rt, |
error = ip_output(m, NULL, &ipforward_rt, |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
(struct ip_moptions *)NULL, (struct socket *)NULL); |
(struct ip_moptions *)NULL, (struct socket *)NULL); |
|
|
if (error) |
if (error) |
ipstat.ips_cantforward++; |
IP_STATINC(IP_STAT_CANTFORWARD); |
else { |
else { |
ipstat.ips_forward++; |
uint64_t *ips = IP_STAT_GETREF(); |
if (type) |
ips[IP_STAT_FORWARD]++; |
ipstat.ips_redirectsent++; |
if (type) { |
else { |
ips[IP_STAT_REDIRECTSENT]++; |
|
IP_STAT_PUTREF(); |
|
} else { |
|
IP_STAT_PUTREF(); |
if (mcopy) { |
if (mcopy) { |
#ifdef GATEWAY |
#ifdef GATEWAY |
if (mcopy->m_flags & M_CANFASTFWD) |
if (mcopy->m_flags & M_CANFASTFWD) |
Line 1955 ip_forward(m, srcrt) |
|
Line 1947 ip_forward(m, srcrt) |
|
} |
} |
if (mcopy == NULL) |
if (mcopy == NULL) |
return; |
return; |
destifp = NULL; |
|
|
|
switch (error) { |
switch (error) { |
|
|
Line 1975 ip_forward(m, srcrt) |
|
Line 1966 ip_forward(m, srcrt) |
|
case EMSGSIZE: |
case EMSGSIZE: |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_NEEDFRAG; |
code = ICMP_UNREACH_NEEDFRAG; |
#if !defined(IPSEC) && !defined(FAST_IPSEC) |
|
if (ipforward_rt.ro_rt) |
if ((rt = rtcache_validate(&ipforward_rt)) != NULL) { |
destifp = ipforward_rt.ro_rt->rt_ifp; |
|
#else |
#if defined(IPSEC) || defined(FAST_IPSEC) |
/* |
/* |
* If the packet is routed over IPsec tunnel, tell the |
* If the packet is routed over IPsec tunnel, tell the |
* originator the tunnel MTU. |
* originator the tunnel MTU. |
* tunnel MTU = if MTU - sizeof(IP) - ESP/AH hdrsiz |
* tunnel MTU = if MTU - sizeof(IP) - ESP/AH hdrsiz |
* XXX quickhack!!! |
* XXX quickhack!!! |
*/ |
*/ |
if (ipforward_rt.ro_rt) { |
|
struct secpolicy *sp; |
struct secpolicy *sp; |
int ipsecerror; |
int ipsecerror; |
size_t ipsechdr; |
size_t ipsechdr; |
Line 1994 ip_forward(m, srcrt) |
|
Line 1985 ip_forward(m, srcrt) |
|
sp = ipsec4_getpolicybyaddr(mcopy, |
sp = ipsec4_getpolicybyaddr(mcopy, |
IPSEC_DIR_OUTBOUND, IP_FORWARDING, |
IPSEC_DIR_OUTBOUND, IP_FORWARDING, |
&ipsecerror); |
&ipsecerror); |
|
#endif |
|
|
if (sp == NULL) |
destmtu = rt->rt_ifp->if_mtu; |
destifp = ipforward_rt.ro_rt->rt_ifp; |
#if defined(IPSEC) || defined(FAST_IPSEC) |
else { |
if (sp != NULL) { |
/* count IPsec header size */ |
/* count IPsec header size */ |
ipsechdr = ipsec4_hdrsiz(mcopy, |
ipsechdr = ipsec4_hdrsiz(mcopy, |
IPSEC_DIR_OUTBOUND, NULL); |
IPSEC_DIR_OUTBOUND, NULL); |
Line 2005 ip_forward(m, srcrt) |
|
Line 1997 ip_forward(m, srcrt) |
|
/* |
/* |
* find the correct route for outer IPv4 |
* find the correct route for outer IPv4 |
* header, compute tunnel MTU. |
* header, compute tunnel MTU. |
* |
|
* XXX BUG ALERT |
|
* The "dummyifp" code relies upon the fact |
|
* that icmp_error() touches only ifp->if_mtu. |
|
*/ |
*/ |
/*XXX*/ |
|
destifp = NULL; |
|
if (sp->req != NULL |
if (sp->req != NULL |
&& sp->req->sav != NULL |
&& sp->req->sav != NULL |
&& sp->req->sav->sah != NULL) { |
&& sp->req->sav->sah != NULL) { |
ro = &sp->req->sav->sah->sa_route; |
ro = &sp->req->sav->sah->sa_route; |
if (ro->ro_rt && ro->ro_rt->rt_ifp) { |
if (rt && rt->rt_ifp) { |
dummyifp.if_mtu = |
destmtu = |
ro->ro_rt->rt_rmx.rmx_mtu ? |
rt->rt_rmx.rmx_mtu ? |
ro->ro_rt->rt_rmx.rmx_mtu : |
rt->rt_rmx.rmx_mtu : |
ro->ro_rt->rt_ifp->if_mtu; |
rt->rt_ifp->if_mtu; |
dummyifp.if_mtu -= ipsechdr; |
destmtu -= ipsechdr; |
destifp = &dummyifp; |
|
} |
} |
} |
} |
|
|
Line 2032 ip_forward(m, srcrt) |
|
Line 2018 ip_forward(m, srcrt) |
|
KEY_FREESP(&sp); |
KEY_FREESP(&sp); |
#endif |
#endif |
} |
} |
|
#endif /*defined(IPSEC) || defined(FAST_IPSEC)*/ |
} |
} |
#endif /*IPSEC*/ |
IP_STATINC(IP_STAT_CANTFRAG); |
ipstat.ips_cantfrag++; |
|
break; |
break; |
|
|
case ENOBUFS: |
case ENOBUFS: |
Line 2054 ip_forward(m, srcrt) |
|
Line 2040 ip_forward(m, srcrt) |
|
break; |
break; |
#endif |
#endif |
} |
} |
icmp_error(mcopy, type, code, dest, destifp); |
icmp_error(mcopy, type, code, dest, destmtu); |
} |
} |
|
|
void |
void |
ip_savecontrol(inp, mp, ip, m) |
ip_savecontrol(struct inpcb *inp, struct mbuf **mp, struct ip *ip, |
struct inpcb *inp; |
struct mbuf *m) |
struct mbuf **mp; |
|
struct ip *ip; |
|
struct mbuf *m; |
|
{ |
{ |
|
|
if (inp->inp_socket->so_options & SO_TIMESTAMP) { |
if (inp->inp_socket->so_options & SO_TIMESTAMP) { |
struct timeval tv; |
struct timeval tv; |
|
|
microtime(&tv); |
microtime(&tv); |
*mp = sbcreatecontrol((caddr_t) &tv, sizeof(tv), |
*mp = sbcreatecontrol((void *) &tv, sizeof(tv), |
SCM_TIMESTAMP, SOL_SOCKET); |
SCM_TIMESTAMP, SOL_SOCKET); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
if (inp->inp_flags & INP_RECVDSTADDR) { |
if (inp->inp_flags & INP_RECVDSTADDR) { |
*mp = sbcreatecontrol((caddr_t) &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; |
Line 2089 ip_savecontrol(inp, mp, ip, m) |
|
Line 2072 ip_savecontrol(inp, mp, ip, m) |
|
*/ |
*/ |
/* options were tossed already */ |
/* options were tossed already */ |
if (inp->inp_flags & INP_RECVOPTS) { |
if (inp->inp_flags & INP_RECVOPTS) { |
*mp = sbcreatecontrol((caddr_t) opts_deleted_above, |
*mp = sbcreatecontrol((void *) opts_deleted_above, |
sizeof(struct in_addr), IP_RECVOPTS, IPPROTO_IP); |
sizeof(struct in_addr), IP_RECVOPTS, IPPROTO_IP); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
/* ip_srcroute doesn't do what we want here, need to fix */ |
/* ip_srcroute doesn't do what we want here, need to fix */ |
if (inp->inp_flags & INP_RECVRETOPTS) { |
if (inp->inp_flags & INP_RECVRETOPTS) { |
*mp = sbcreatecontrol((caddr_t) ip_srcroute(), |
*mp = sbcreatecontrol((void *) ip_srcroute(), |
sizeof(struct in_addr), IP_RECVRETOPTS, IPPROTO_IP); |
sizeof(struct in_addr), IP_RECVRETOPTS, IPPROTO_IP); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
Line 2105 ip_savecontrol(inp, mp, ip, m) |
|
Line 2088 ip_savecontrol(inp, mp, ip, m) |
|
if (inp->inp_flags & INP_RECVIF) { |
if (inp->inp_flags & INP_RECVIF) { |
struct sockaddr_dl sdl; |
struct sockaddr_dl sdl; |
|
|
sdl.sdl_len = offsetof(struct sockaddr_dl, sdl_data[0]); |
sockaddr_dl_init(&sdl, sizeof(sdl), |
sdl.sdl_family = AF_LINK; |
(m->m_pkthdr.rcvif != NULL) |
sdl.sdl_index = m->m_pkthdr.rcvif ? |
? m->m_pkthdr.rcvif->if_index |
m->m_pkthdr.rcvif->if_index : 0; |
: 0, |
sdl.sdl_nlen = sdl.sdl_alen = sdl.sdl_slen = 0; |
0, NULL, 0, NULL, 0); |
*mp = sbcreatecontrol((caddr_t) &sdl, sdl.sdl_len, |
*mp = sbcreatecontrol(&sdl, sdl.sdl_len, IP_RECVIF, IPPROTO_IP); |
IP_RECVIF, IPPROTO_IP); |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
} |
} |
|
|
/* |
/* |
|
* sysctl helper routine for net.inet.ip.forwsrcrt. |
|
*/ |
|
static int |
|
sysctl_net_inet_ip_forwsrcrt(SYSCTLFN_ARGS) |
|
{ |
|
int error, tmp; |
|
struct sysctlnode node; |
|
|
|
node = *rnode; |
|
tmp = ip_forwsrcrt; |
|
node.sysctl_data = &tmp; |
|
error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
|
if (error || newp == NULL) |
|
return (error); |
|
|
|
if (kauth_authorize_network(l->l_cred, KAUTH_NETWORK_FORWSRCRT, |
|
0, NULL, NULL, NULL)) |
|
return (EPERM); |
|
|
|
ip_forwsrcrt = tmp; |
|
|
|
return (0); |
|
} |
|
|
|
/* |
* sysctl helper routine for net.inet.ip.mtudisctimeout. checks the |
* sysctl helper routine for net.inet.ip.mtudisctimeout. checks the |
* range of the new value and tweaks timers if it changes. |
* range of the new value and tweaks timers if it changes. |
*/ |
*/ |
Line 2144 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
|
Line 2151 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
|
|
|
#ifdef GATEWAY |
#ifdef GATEWAY |
/* |
/* |
* sysctl helper routine for net.inet.ip.maxflows. apparently if |
* sysctl helper routine for net.inet.ip.maxflows. |
* maxflows is even looked up, we "reap flows". |
|
*/ |
*/ |
static int |
static int |
sysctl_net_inet_ip_maxflows(SYSCTLFN_ARGS) |
sysctl_net_inet_ip_maxflows(SYSCTLFN_ARGS) |
Line 2153 sysctl_net_inet_ip_maxflows(SYSCTLFN_ARG |
|
Line 2159 sysctl_net_inet_ip_maxflows(SYSCTLFN_ARG |
|
int s; |
int s; |
|
|
s = sysctl_lookup(SYSCTLFN_CALL(rnode)); |
s = sysctl_lookup(SYSCTLFN_CALL(rnode)); |
if (s) |
if (s || newp == NULL) |
return (s); |
return (s); |
|
|
s = splsoftnet(); |
s = splsoftnet(); |
ipflow_reap(0); |
ipflow_prune(); |
splx(s); |
splx(s); |
|
|
return (0); |
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() |
|
*/ |
|
if (ipflow_invalidate_all(tmp)) |
|
return ENOMEM; |
|
} else { |
|
/* |
|
* EINVAL if not a power of 2 |
|
*/ |
|
return EINVAL; |
|
} |
|
|
|
return (0); |
|
} |
#endif /* GATEWAY */ |
#endif /* GATEWAY */ |
|
|
|
static int |
|
sysctl_net_inet_ip_stats(SYSCTLFN_ARGS) |
|
{ |
|
|
|
return (NETSTAT_SYSCTL(ipstat_percpu, IP_NSTATS)); |
|
} |
|
|
SYSCTL_SETUP(sysctl_net_inet_ip_setup, "sysctl net.inet.ip subtree setup") |
SYSCTL_SETUP(sysctl_net_inet_ip_setup, "sysctl net.inet.ip subtree setup") |
{ |
{ |
Line 2176 SYSCTL_SETUP(sysctl_net_inet_ip_setup, " |
|
Line 2217 SYSCTL_SETUP(sysctl_net_inet_ip_setup, " |
|
CTL_NET, CTL_EOL); |
CTL_NET, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT, |
CTLFLAG_PERMANENT, |
CTLTYPE_NODE, "inet", NULL, |
CTLTYPE_NODE, "inet", |
|
SYSCTL_DESCR("PF_INET related settings"), |
NULL, 0, NULL, 0, |
NULL, 0, NULL, 0, |
CTL_NET, PF_INET, CTL_EOL); |
CTL_NET, PF_INET, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT, |
CTLFLAG_PERMANENT, |
CTLTYPE_NODE, "ip", NULL, |
CTLTYPE_NODE, "ip", |
|
SYSCTL_DESCR("IPv4 related settings"), |
NULL, 0, NULL, 0, |
NULL, 0, NULL, 0, |
CTL_NET, PF_INET, IPPROTO_IP, CTL_EOL); |
CTL_NET, PF_INET, IPPROTO_IP, CTL_EOL); |
|
|
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "forwarding", NULL, |
CTLTYPE_INT, "forwarding", |
|
SYSCTL_DESCR("Enable forwarding of INET datagrams"), |
NULL, 0, &ipforwarding, 0, |
NULL, 0, &ipforwarding, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_FORWARDING, CTL_EOL); |
IPCTL_FORWARDING, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "redirect", NULL, |
CTLTYPE_INT, "redirect", |
|
SYSCTL_DESCR("Enable sending of ICMP redirect messages"), |
NULL, 0, &ipsendredirects, 0, |
NULL, 0, &ipsendredirects, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_SENDREDIRECTS, CTL_EOL); |
IPCTL_SENDREDIRECTS, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "ttl", NULL, |
CTLTYPE_INT, "ttl", |
|
SYSCTL_DESCR("Default TTL for an INET datagram"), |
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 |
#ifdef IPCTL_DEFMTU |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT /* |CTLFLAG_READWRITE? */, |
CTLFLAG_PERMANENT /* |CTLFLAG_READWRITE? */, |
CTLTYPE_INT, "mtu", NULL, |
CTLTYPE_INT, "mtu", |
|
SYSCTL_DESCR("Default MTA for an INET route"), |
NULL, 0, &ip_mtu, 0, |
NULL, 0, &ip_mtu, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_DEFMTU, CTL_EOL); |
IPCTL_DEFMTU, CTL_EOL); |
#endif /* IPCTL_DEFMTU */ |
#endif /* IPCTL_DEFMTU */ |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READONLY1, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "forwsrcrt", NULL, |
CTLTYPE_INT, "forwsrcrt", |
NULL, 0, &ip_forwsrcrt, 0, |
SYSCTL_DESCR("Enable forwarding of source-routed " |
|
"datagrams"), |
|
sysctl_net_inet_ip_forwsrcrt, 0, &ip_forwsrcrt, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_FORWSRCRT, CTL_EOL); |
IPCTL_FORWSRCRT, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "directed-broadcast", NULL, |
CTLTYPE_INT, "directed-broadcast", |
|
SYSCTL_DESCR("Enable forwarding of broadcast datagrams"), |
NULL, 0, &ip_directedbcast, 0, |
NULL, 0, &ip_directedbcast, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_DIRECTEDBCAST, CTL_EOL); |
IPCTL_DIRECTEDBCAST, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "allowsrcrt", NULL, |
CTLTYPE_INT, "allowsrcrt", |
|
SYSCTL_DESCR("Accept source-routed datagrams"), |
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, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "subnetsarelocal", NULL, |
CTLTYPE_INT, "subnetsarelocal", |
|
SYSCTL_DESCR("Whether logical subnets are considered " |
|
"local"), |
NULL, 0, &subnetsarelocal, 0, |
NULL, 0, &subnetsarelocal, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_SUBNETSARELOCAL, CTL_EOL); |
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", NULL, |
CTLTYPE_INT, "mtudisc", |
|
SYSCTL_DESCR("Use RFC1191 Path MTU Discovery"), |
NULL, 0, &ip_mtudisc, 0, |
NULL, 0, &ip_mtudisc, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_MTUDISC, CTL_EOL); |
IPCTL_MTUDISC, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "anonportmin", NULL, |
CTLTYPE_INT, "anonportmin", |
|
SYSCTL_DESCR("Lowest ephemeral port number to assign"), |
sysctl_net_inet_ip_ports, 0, &anonportmin, 0, |
sysctl_net_inet_ip_ports, 0, &anonportmin, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_ANONPORTMIN, CTL_EOL); |
IPCTL_ANONPORTMIN, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "anonportmax", NULL, |
CTLTYPE_INT, "anonportmax", |
|
SYSCTL_DESCR("Highest ephemeral port number to assign"), |
sysctl_net_inet_ip_ports, 0, &anonportmax, 0, |
sysctl_net_inet_ip_ports, 0, &anonportmax, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_ANONPORTMAX, CTL_EOL); |
IPCTL_ANONPORTMAX, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "mtudisctimeout", NULL, |
CTLTYPE_INT, "mtudisctimeout", |
|
SYSCTL_DESCR("Lifetime of a Path MTU Discovered route"), |
sysctl_net_inet_ip_pmtudto, 0, &ip_mtudisc_timeout, 0, |
sysctl_net_inet_ip_pmtudto, 0, &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 |
#ifdef GATEWAY |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "maxflows", NULL, |
CTLTYPE_INT, "maxflows", |
|
SYSCTL_DESCR("Number of flows for fast forwarding"), |
sysctl_net_inet_ip_maxflows, 0, &ip_maxflows, 0, |
sysctl_net_inet_ip_maxflows, 0, &ip_maxflows, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_MAXFLOWS, CTL_EOL); |
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 */ |
#endif /* GATEWAY */ |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "hostzerobroadcast", NULL, |
CTLTYPE_INT, "hostzerobroadcast", |
|
SYSCTL_DESCR("All zeroes address is broadcast address"), |
NULL, 0, &hostzeroisbroadcast, 0, |
NULL, 0, &hostzeroisbroadcast, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_HOSTZEROBROADCAST, CTL_EOL); |
IPCTL_HOSTZEROBROADCAST, CTL_EOL); |
#if NGIF > 0 |
#if NGIF > 0 |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "gifttl", NULL, |
CTLTYPE_INT, "gifttl", |
|
SYSCTL_DESCR("Default TTL for a gif tunnel datagram"), |
NULL, 0, &ip_gif_ttl, 0, |
NULL, 0, &ip_gif_ttl, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_GIF_TTL, CTL_EOL); |
IPCTL_GIF_TTL, CTL_EOL); |
Line 2284 SYSCTL_SETUP(sysctl_net_inet_ip_setup, " |
|
Line 2351 SYSCTL_SETUP(sysctl_net_inet_ip_setup, " |
|
#ifndef IPNOPRIVPORTS |
#ifndef IPNOPRIVPORTS |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "lowportmin", NULL, |
CTLTYPE_INT, "lowportmin", |
|
SYSCTL_DESCR("Lowest privileged ephemeral port number " |
|
"to assign"), |
sysctl_net_inet_ip_ports, 0, &lowportmin, 0, |
sysctl_net_inet_ip_ports, 0, &lowportmin, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_LOWPORTMIN, CTL_EOL); |
IPCTL_LOWPORTMIN, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "lowportmax", NULL, |
CTLTYPE_INT, "lowportmax", |
|
SYSCTL_DESCR("Highest privileged ephemeral port number " |
|
"to assign"), |
sysctl_net_inet_ip_ports, 0, &lowportmax, 0, |
sysctl_net_inet_ip_ports, 0, &lowportmax, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_LOWPORTMAX, CTL_EOL); |
IPCTL_LOWPORTMAX, CTL_EOL); |
#endif /* IPNOPRIVPORTS */ |
#endif /* IPNOPRIVPORTS */ |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "maxfragpackets", NULL, |
CTLTYPE_INT, "maxfragpackets", |
|
SYSCTL_DESCR("Maximum number of fragments to retain for " |
|
"possible reassembly"), |
NULL, 0, &ip_maxfragpackets, 0, |
NULL, 0, &ip_maxfragpackets, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_MAXFRAGPACKETS, CTL_EOL); |
IPCTL_MAXFRAGPACKETS, CTL_EOL); |
#if NGRE > 0 |
#if NGRE > 0 |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "grettl", NULL, |
CTLTYPE_INT, "grettl", |
|
SYSCTL_DESCR("Default TTL for a gre tunnel datagram"), |
NULL, 0, &ip_gre_ttl, 0, |
NULL, 0, &ip_gre_ttl, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_GRE_TTL, CTL_EOL); |
IPCTL_GRE_TTL, CTL_EOL); |
#endif /* NGRE */ |
#endif /* NGRE */ |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "checkinterface", NULL, |
CTLTYPE_INT, "checkinterface", |
|
SYSCTL_DESCR("Enable receive side of Strong ES model " |
|
"from RFC1122"), |
NULL, 0, &ip_checkinterface, 0, |
NULL, 0, &ip_checkinterface, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_CHECKINTERFACE, CTL_EOL); |
IPCTL_CHECKINTERFACE, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "random_id", NULL, |
CTLTYPE_INT, "random_id", |
|
SYSCTL_DESCR("Assign random ip_id values"), |
NULL, 0, &ip_do_randomid, 0, |
NULL, 0, &ip_do_randomid, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_RANDOMID, CTL_EOL); |
IPCTL_RANDOMID, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "do_loopback_cksum", |
|
SYSCTL_DESCR("Perform IP checksum on loopback"), |
|
NULL, 0, &ip_do_loopback_cksum, 0, |
|
CTL_NET, PF_INET, IPPROTO_IP, |
|
IPCTL_LOOPBACKCKSUM, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_STRUCT, "stats", |
|
SYSCTL_DESCR("IP statistics"), |
|
sysctl_net_inet_ip_stats, 0, NULL, 0, |
|
CTL_NET, PF_INET, IPPROTO_IP, IPCTL_STATS, |
|
CTL_EOL); |
|
} |
|
|
|
void |
|
ip_statinc(u_int stat) |
|
{ |
|
|
|
KASSERT(stat < IP_NSTATS); |
|
IP_STATINC(stat); |
} |
} |