version 1.337, 2016/07/08 06:15:33 |
version 1.337.2.5, 2017/04/26 02:53:29 |
Line 101 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 101 __KERNEL_RCSID(0, "$NetBSD$"); |
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#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" |
#endif |
#endif |
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#include "arp.h" |
#include "arp.h" |
Line 252 EVCNT_ATTACH_STATIC(ip_swcsum); |
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Line 253 EVCNT_ATTACH_STATIC(ip_swcsum); |
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#endif /* INET_CSUM_COUNTERS */ |
#endif /* INET_CSUM_COUNTERS */ |
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/* |
/* |
* We need to save the IP options in case a protocol wants to respond |
* Used to save the IP options in case a protocol wants to respond |
* to an incoming packet over the same route if the packet got here |
* to an incoming packet over the same route if the packet got here |
* using IP source routing. This allows connection establishment and |
* using IP source routing. This allows connection establishment and |
* maintenance when the remote end is on a network that is not known |
* maintenance when the remote end is on a network that is not known |
* to us. |
* to us. |
*/ |
*/ |
|
struct ip_srcrt { |
static int ip_nhops = 0; |
int isr_nhops; /* number of hops */ |
|
struct in_addr isr_dst; /* final destination */ |
static struct ip_srcrt { |
char isr_nop; /* one NOP to align */ |
struct in_addr dst; /* final destination */ |
char isr_hdr[IPOPT_OFFSET + 1]; /* OPTVAL, OLEN & OFFSET */ |
char nop; /* one NOP to align */ |
struct in_addr isr_routes[MAX_IPOPTLEN/sizeof(struct in_addr)]; |
char srcopt[IPOPT_OFFSET + 1]; /* OPTVAL, OLEN and OFFSET */ |
}; |
struct in_addr route[MAX_IPOPTLEN/sizeof(struct in_addr)]; |
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} ip_srcrt; |
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static int ip_drainwanted; |
static int ip_drainwanted; |
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struct sockaddr_in ipaddr = { |
static void save_rte(struct mbuf *, u_char *, struct in_addr); |
.sin_len = sizeof(ipaddr), |
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.sin_family = AF_INET, |
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}; |
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|
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static void save_rte(u_char *, struct in_addr); |
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#ifdef MBUFTRACE |
#ifdef MBUFTRACE |
struct mowner ip_rx_mowner = MOWNER_INIT("internet", "rx"); |
struct mowner ip_rx_mowner = MOWNER_INIT("internet", "rx"); |
Line 286 static void ipintr(void *); |
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Line 280 static void ipintr(void *); |
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static void ip_input(struct mbuf *); |
static void ip_input(struct mbuf *); |
static void ip_forward(struct mbuf *, int, struct ifnet *); |
static void ip_forward(struct mbuf *, int, struct ifnet *); |
static bool ip_dooptions(struct mbuf *); |
static bool ip_dooptions(struct mbuf *); |
static struct in_ifaddr *ip_rtaddr(struct in_addr); |
static struct in_ifaddr *ip_rtaddr(struct in_addr, struct psref *); |
static void sysctl_net_inet_ip_setup(struct sysctllog **); |
static void sysctl_net_inet_ip_setup(struct sysctllog **); |
|
|
static struct in_ifaddr *ip_match_our_address(struct ifnet *, struct ip *, |
static struct in_ifaddr *ip_match_our_address(struct ifnet *, struct ip *, |
Line 294 static struct in_ifaddr *ip_match_our_ad |
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Line 288 static struct in_ifaddr *ip_match_our_ad |
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static struct in_ifaddr *ip_match_our_address_broadcast(struct ifnet *, |
static struct in_ifaddr *ip_match_our_address_broadcast(struct ifnet *, |
struct ip *); |
struct ip *); |
|
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/* XXX: Not yet enabled. */ |
#ifdef NET_MPSAFE |
|
#define SOFTNET_LOCK() mutex_enter(softnet_lock) |
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#define SOFTNET_UNLOCK() mutex_exit(softnet_lock) |
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#else |
#define SOFTNET_LOCK() KASSERT(mutex_owned(softnet_lock)) |
#define SOFTNET_LOCK() KASSERT(mutex_owned(softnet_lock)) |
#define SOFTNET_UNLOCK() KASSERT(mutex_owned(softnet_lock)) |
#define SOFTNET_UNLOCK() KASSERT(mutex_owned(softnet_lock)) |
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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_ids = ip_id_init(); |
ip_ids = ip_id_init(); |
ip_id = time_uptime & 0xfffff; |
ip_id = time_uptime & 0xfffff; |
|
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ip_mtudisc_timeout_q = rt_timer_queue_create(ip_mtudisc_timeout); |
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#ifdef GATEWAY |
#ifdef GATEWAY |
ipflow_init(); |
ipflow_init(); |
#endif |
#endif |
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#endif /* MBUFTRACE */ |
#endif /* MBUFTRACE */ |
|
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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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|
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ipforward_rt_percpu = percpu_alloc(sizeof(struct route)); |
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if (ipforward_rt_percpu == NULL) |
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panic("failed to allocate ipforward_rt_percpu"); |
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ip_mtudisc_timeout_q = rt_timer_queue_create(ip_mtudisc_timeout); |
} |
} |
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static struct in_ifaddr * |
static struct in_ifaddr * |
Line 381 ip_match_our_address(struct ifnet *ifp, |
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Line 384 ip_match_our_address(struct ifnet *ifp, |
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if ((ia->ia_ifp->if_flags & IFF_UP) != 0) |
if ((ia->ia_ifp->if_flags & IFF_UP) != 0) |
break; |
break; |
else |
else |
downmatch++; |
(*downmatch)++; |
} |
} |
} |
} |
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Line 432 ipintr(void *arg __unused) |
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Line 435 ipintr(void *arg __unused) |
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KASSERT(cpu_softintr_p()); |
KASSERT(cpu_softintr_p()); |
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#ifndef NET_MPSAFE |
mutex_enter(softnet_lock); |
mutex_enter(softnet_lock); |
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#endif |
while ((m = pktq_dequeue(ip_pktq)) != NULL) { |
while ((m = pktq_dequeue(ip_pktq)) != NULL) { |
ip_input(m); |
ip_input(m); |
} |
} |
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#ifndef NET_MPSAFE |
mutex_exit(softnet_lock); |
mutex_exit(softnet_lock); |
|
#endif |
} |
} |
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/* |
/* |
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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; |
int hlen = 0, len; |
int hlen = 0, len; |
int downmatch; |
int downmatch; |
int srcrt = 0; |
int srcrt = 0; |
ifnet_t *ifp; |
ifnet_t *ifp; |
struct psref psref; |
struct psref psref; |
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int s; |
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KASSERTMSG(cpu_softintr_p(), "ip_input: not in the software " |
KASSERTMSG(cpu_softintr_p(), "ip_input: not in the software " |
"interrupt handler; synchronization assumptions violated"); |
"interrupt handler; synchronization assumptions violated"); |
Line 608 ip_input(struct mbuf *m) |
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Line 616 ip_input(struct mbuf *m) |
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struct in_addr odst = ip->ip_dst; |
struct in_addr odst = ip->ip_dst; |
bool freed; |
bool freed; |
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SOFTNET_LOCK(); |
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freed = pfil_run_hooks(inet_pfil_hook, &m, ifp, PFIL_IN) != 0; |
freed = pfil_run_hooks(inet_pfil_hook, &m, ifp, PFIL_IN) != 0; |
SOFTNET_UNLOCK(); |
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if (freed || m == NULL) { |
if (freed || m == NULL) { |
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m = NULL; |
goto out; |
goto out; |
} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
Line 641 ip_input(struct mbuf *m) |
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Line 648 ip_input(struct mbuf *m) |
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if ((*altq_input)(m, AF_INET) == 0) { |
if ((*altq_input)(m, AF_INET) == 0) { |
/* Packet dropped by traffic conditioner. */ |
/* Packet dropped by traffic conditioner. */ |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
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m = NULL; |
goto out; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
Line 653 ip_input(struct mbuf *m) |
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Line 661 ip_input(struct mbuf *m) |
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* error was detected (causing an icmp message |
* error was detected (causing an icmp message |
* to be sent and the original packet to be freed). |
* to be sent and the original packet to be freed). |
*/ |
*/ |
ip_nhops = 0; /* for source routed packets */ |
if (hlen > sizeof (struct ip) && ip_dooptions(m)) { |
if (hlen > sizeof (struct ip) && ip_dooptions(m)) |
m = NULL; |
goto out; |
goto out; |
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} |
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/* |
/* |
* Check our list of addresses, to see if the packet is for us. |
* Check our list of addresses, to see if the packet is for us. |
Line 665 ip_input(struct mbuf *m) |
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Line 674 ip_input(struct mbuf *m) |
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* or IN_IFF_NOTREADY addresses as not mine. |
* or IN_IFF_NOTREADY addresses as not mine. |
*/ |
*/ |
downmatch = 0; |
downmatch = 0; |
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s = pserialize_read_enter(); |
ia = ip_match_our_address(ifp, ip, &downmatch); |
ia = ip_match_our_address(ifp, ip, &downmatch); |
if (ia != NULL) |
if (ia != NULL) { |
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pserialize_read_exit(s); |
goto ours; |
goto ours; |
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} |
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if (ifp->if_flags & IFF_BROADCAST) { |
if (ifp->if_flags & IFF_BROADCAST) { |
ia = ip_match_our_address_broadcast(ifp, ip); |
ia = ip_match_our_address_broadcast(ifp, ip); |
if (ia != NULL) |
if (ia != NULL) { |
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pserialize_read_exit(s); |
goto ours; |
goto ours; |
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} |
} |
} |
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pserialize_read_exit(s); |
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if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
#ifdef MROUTING |
#ifdef MROUTING |
|
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* Switch out to protocol's input routine. |
* Switch out to protocol's input routine. |
*/ |
*/ |
#if IFA_STATS |
#if IFA_STATS |
if (ia && ip) |
if (ia && ip) { |
ia->ia_ifa.ifa_data.ifad_inbytes += ntohs(ip->ip_len); |
struct in_ifaddr *_ia; |
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/* |
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* Keep a reference from ip_match_our_address with psref |
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* is expensive, so explore ia here again. |
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*/ |
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s = pserialize_read_enter(); |
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_ia = in_get_ia(ip->ip_dst); |
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_ia->ia_ifa.ifa_data.ifad_inbytes += ntohs(ip->ip_len); |
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pserialize_read_exit(s); |
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} |
#endif |
#endif |
IP_STATINC(IP_STAT_DELIVERED); |
IP_STATINC(IP_STAT_DELIVERED); |
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ip_slowtimo(void) |
ip_slowtimo(void) |
{ |
{ |
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#ifndef NET_MPSAFE |
mutex_enter(softnet_lock); |
mutex_enter(softnet_lock); |
KERNEL_LOCK(1, NULL); |
KERNEL_LOCK(1, NULL); |
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#endif |
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ip_reass_slowtimo(); |
ip_reass_slowtimo(); |
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#ifndef NET_MPSAFE |
KERNEL_UNLOCK_ONE(NULL); |
KERNEL_UNLOCK_ONE(NULL); |
mutex_exit(softnet_lock); |
mutex_exit(softnet_lock); |
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#endif |
} |
} |
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/* |
/* |
Line 873 ip_dooptions(struct mbuf *m) |
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Line 901 ip_dooptions(struct mbuf *m) |
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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; |
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struct ifaddr *ifa = NULL; |
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int s; |
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dst = ip->ip_dst; |
dst = ip->ip_dst; |
cp = (u_char *)(ip + 1); |
cp = (u_char *)(ip + 1); |
Line 909 ip_dooptions(struct mbuf *m) |
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Line 939 ip_dooptions(struct mbuf *m) |
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* address is on directly accessible net. |
* address is on directly accessible net. |
*/ |
*/ |
case IPOPT_LSRR: |
case IPOPT_LSRR: |
case IPOPT_SSRR: |
case IPOPT_SSRR: { |
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struct psref psref; |
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struct sockaddr_in ipaddr = { |
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.sin_len = sizeof(ipaddr), |
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.sin_family = AF_INET, |
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}; |
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if (ip_allowsrcrt == 0) { |
if (ip_allowsrcrt == 0) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_NET_PROHIB; |
code = ICMP_UNREACH_NET_PROHIB; |
Line 924 ip_dooptions(struct mbuf *m) |
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Line 960 ip_dooptions(struct mbuf *m) |
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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(); |
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ifa = ifa_ifwithaddr(sintosa(&ipaddr)); |
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if (ifa == NULL) { |
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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 937 ip_dooptions(struct mbuf *m) |
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Line 976 ip_dooptions(struct mbuf *m) |
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*/ |
*/ |
break; |
break; |
} |
} |
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pserialize_read_exit(s); |
|
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off--; /* 0 origin */ |
off--; /* 0 origin */ |
if ((off + sizeof(struct in_addr)) > optlen) { |
if ((off + sizeof(struct in_addr)) > optlen) { |
/* |
/* |
* End of source route. Should be for us. |
* End of source route. Should be for us. |
*/ |
*/ |
save_rte(cp, ip->ip_src); |
save_rte(m, cp, ip->ip_src); |
break; |
break; |
} |
} |
/* |
/* |
Line 950 ip_dooptions(struct mbuf *m) |
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Line 991 ip_dooptions(struct mbuf *m) |
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*/ |
*/ |
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) |
if (opt == IPOPT_SSRR) { |
ia = ifatoia(ifa_ifwithladdr(sintosa(&ipaddr))); |
ifa = ifa_ifwithladdr_psref(sintosa(&ipaddr), |
else |
&psref); |
ia = ip_rtaddr(ipaddr.sin_addr); |
if (ifa != NULL) |
if (ia == 0) { |
ia = ifatoia(ifa); |
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else |
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ia = NULL; |
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} else { |
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ia = ip_rtaddr(ipaddr.sin_addr, &psref); |
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} |
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if (ia == NULL) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_SRCFAIL; |
code = ICMP_UNREACH_SRCFAIL; |
goto bad; |
goto bad; |
Line 962 ip_dooptions(struct mbuf *m) |
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Line 1009 ip_dooptions(struct mbuf *m) |
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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)); |
|
ia4_release(ia, &psref); |
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 |
*/ |
*/ |
forward = !IN_MULTICAST(ip->ip_dst.s_addr); |
forward = !IN_MULTICAST(ip->ip_dst.s_addr); |
break; |
break; |
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} |
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|
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case IPOPT_RR: { |
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struct psref psref; |
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struct sockaddr_in ipaddr = { |
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.sin_len = sizeof(ipaddr), |
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.sin_family = AF_INET, |
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}; |
|
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case IPOPT_RR: |
|
if (optlen < IPOPT_OFFSET + sizeof(*cp)) { |
if (optlen < IPOPT_OFFSET + sizeof(*cp)) { |
code = &cp[IPOPT_OLEN] - (u_char *)ip; |
code = &cp[IPOPT_OLEN] - (u_char *)ip; |
goto bad; |
goto bad; |
Line 990 ip_dooptions(struct mbuf *m) |
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Line 1045 ip_dooptions(struct mbuf *m) |
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* 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)))) |
ifa = ifa_ifwithaddr_psref(sintosa(&ipaddr), &psref); |
== NULL && |
if (ifa == NULL) { |
(ia = ip_rtaddr(ipaddr.sin_addr)) == NULL) { |
ia = ip_rtaddr(ipaddr.sin_addr, &psref); |
type = ICMP_UNREACH; |
if (ia == NULL) { |
code = ICMP_UNREACH_HOST; |
type = ICMP_UNREACH; |
goto bad; |
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)); |
|
ia4_release(ia, &psref); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
break; |
break; |
|
} |
|
|
case IPOPT_TS: |
case IPOPT_TS: |
code = cp - (u_char *)ip; |
code = cp - (u_char *)ip; |
Line 1029 ip_dooptions(struct mbuf *m) |
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Line 1090 ip_dooptions(struct mbuf *m) |
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|
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case IPOPT_TS_TSANDADDR: { |
case IPOPT_TS_TSANDADDR: { |
struct ifnet *rcvif; |
struct ifnet *rcvif; |
int s; |
int _s, _ss; |
|
struct sockaddr_in ipaddr = { |
|
.sin_len = sizeof(ipaddr), |
|
.sin_family = AF_INET, |
|
}; |
|
|
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
sizeof(struct in_addr) > ipt->ipt_len) { |
sizeof(struct in_addr) > ipt->ipt_len) { |
Line 1038 ip_dooptions(struct mbuf *m) |
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Line 1103 ip_dooptions(struct mbuf *m) |
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goto bad; |
goto bad; |
} |
} |
ipaddr.sin_addr = dst; |
ipaddr.sin_addr = dst; |
rcvif = m_get_rcvif(m, &s); |
_ss = pserialize_read_enter(); |
ia = ifatoia(ifaof_ifpforaddr(sintosa(&ipaddr), |
rcvif = m_get_rcvif(m, &_s); |
rcvif)); |
if (__predict_true(rcvif != NULL)) { |
m_put_rcvif(rcvif, &s); |
ifa = ifaof_ifpforaddr(sintosa(&ipaddr), |
if (ia == 0) |
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: { |
|
struct sockaddr_in ipaddr = { |
|
.sin_len = sizeof(ipaddr), |
|
.sin_family = AF_INET, |
|
}; |
|
|
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
sizeof(struct in_addr) > ipt->ipt_len) { |
sizeof(struct in_addr) > ipt->ipt_len) { |
code = (u_char *)&ipt->ipt_ptr - |
code = (u_char *)&ipt->ipt_ptr - |
Line 1059 ip_dooptions(struct mbuf *m) |
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Line 1136 ip_dooptions(struct mbuf *m) |
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} |
} |
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; |
|
} |
|
|
default: |
default: |
/* XXX can't take &ipt->ipt_flg */ |
/* XXX can't take &ipt->ipt_flg */ |
Line 1080 ip_dooptions(struct mbuf *m) |
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Line 1162 ip_dooptions(struct mbuf *m) |
|
} |
} |
if (forward) { |
if (forward) { |
struct ifnet *rcvif; |
struct ifnet *rcvif; |
struct psref psref; |
struct psref _psref; |
|
|
if (ip_forwsrcrt == 0) { |
if (ip_forwsrcrt == 0) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
Line 1088 ip_dooptions(struct mbuf *m) |
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Line 1170 ip_dooptions(struct mbuf *m) |
|
goto bad; |
goto bad; |
} |
} |
|
|
rcvif = m_get_rcvif_psref(m, &psref); |
rcvif = m_get_rcvif_psref(m, &_psref); |
if (__predict_false(rcvif == NULL)) { |
if (__predict_false(rcvif == NULL)) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_HOST; |
code = ICMP_UNREACH_HOST; |
goto bad; |
goto bad; |
} |
} |
ip_forward(m, 1, rcvif); |
ip_forward(m, 1, rcvif); |
m_put_rcvif_psref(rcvif, &psref); |
m_put_rcvif_psref(rcvif, &_psref); |
return true; |
return true; |
} |
} |
return false; |
return false; |
|
|
* return internet address info of interface to be used to get there. |
* return internet address info of interface to be used to get there. |
*/ |
*/ |
static struct in_ifaddr * |
static struct in_ifaddr * |
ip_rtaddr(struct in_addr dst) |
ip_rtaddr(struct in_addr dst, struct psref *psref) |
{ |
{ |
struct rtentry *rt; |
struct rtentry *rt; |
union { |
union { |
Line 1120 ip_rtaddr(struct in_addr dst) |
|
Line 1202 ip_rtaddr(struct in_addr dst) |
|
|
|
sockaddr_in_init(&u.dst4, &dst, 0); |
sockaddr_in_init(&u.dst4, &dst, 0); |
|
|
SOFTNET_LOCK(); |
ro = percpu_getref(ipforward_rt_percpu); |
rt = rtcache_lookup(&ipforward_rt, &u.dst); |
rt = rtcache_lookup(ro, &u.dst); |
SOFTNET_UNLOCK(); |
if (rt == NULL) { |
if (rt == NULL) |
percpu_putref(ipforward_rt_percpu); |
return NULL; |
return NULL; |
|
} |
|
|
|
ia4_acquire(ifatoia(rt->rt_ifa), psref); |
|
rtcache_unref(rt, ro); |
|
percpu_putref(ipforward_rt_percpu); |
|
|
return ifatoia(rt->rt_ifa); |
return ifatoia(rt->rt_ifa); |
} |
} |
Line 1134 ip_rtaddr(struct in_addr dst) |
|
Line 1221 ip_rtaddr(struct in_addr dst) |
|
* up later by ip_srcroute if the receiver is interested. |
* up later by ip_srcroute if the receiver is interested. |
*/ |
*/ |
static void |
static void |
save_rte(u_char *option, struct in_addr dst) |
save_rte(struct mbuf *m, u_char *option, struct in_addr dst) |
{ |
{ |
|
struct ip_srcrt *isr; |
|
struct m_tag *mtag; |
unsigned olen; |
unsigned olen; |
|
|
olen = option[IPOPT_OLEN]; |
olen = option[IPOPT_OLEN]; |
if (olen > sizeof(ip_srcrt) - (1 + sizeof(dst))) |
if (olen > sizeof(isr->isr_hdr) + sizeof(isr->isr_routes)) |
return; |
return; |
memcpy((void *)ip_srcrt.srcopt, (void *)option, olen); |
|
ip_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr); |
mtag = m_tag_get(PACKET_TAG_SRCROUTE, sizeof(*isr), M_NOWAIT); |
ip_srcrt.dst = dst; |
if (mtag == NULL) |
|
return; |
|
isr = (struct ip_srcrt *)(mtag + 1); |
|
|
|
memcpy(isr->isr_hdr, option, olen); |
|
isr->isr_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr); |
|
isr->isr_dst = dst; |
|
m_tag_prepend(m, mtag); |
} |
} |
|
|
/* |
/* |
Line 1152 save_rte(u_char *option, struct in_addr |
|
Line 1248 save_rte(u_char *option, struct in_addr |
|
* The first hop is placed before the options, will be removed later. |
* The first hop is placed before the options, will be removed later. |
*/ |
*/ |
struct mbuf * |
struct mbuf * |
ip_srcroute(void) |
ip_srcroute(struct mbuf *m0) |
{ |
{ |
struct in_addr *p, *q; |
struct in_addr *p, *q; |
struct mbuf *m; |
struct mbuf *m; |
|
struct ip_srcrt *isr; |
|
struct m_tag *mtag; |
|
|
|
mtag = m_tag_find(m0, PACKET_TAG_SRCROUTE, NULL); |
|
if (mtag == NULL) |
|
return NULL; |
|
isr = (struct ip_srcrt *)(mtag + 1); |
|
|
if (ip_nhops == 0) |
if (isr->isr_nhops == 0) |
return NULL; |
return NULL; |
|
|
m = m_get(M_DONTWAIT, MT_SOOPTS); |
m = m_get(M_DONTWAIT, MT_SOOPTS); |
if (m == 0) |
if (m == NULL) |
return NULL; |
return NULL; |
|
|
MCLAIM(m, &inetdomain.dom_mowner); |
MCLAIM(m, &inetdomain.dom_mowner); |
#define OPTSIZ (sizeof(ip_srcrt.nop) + sizeof(ip_srcrt.srcopt)) |
#define OPTSIZ (sizeof(isr->isr_nop) + sizeof(isr->isr_hdr)) |
|
|
/* length is (nhops+1)*sizeof(addr) + sizeof(nop + srcrt header) */ |
/* length is (nhops+1)*sizeof(addr) + sizeof(nop + header) */ |
m->m_len = ip_nhops * sizeof(struct in_addr) + sizeof(struct in_addr) + |
m->m_len = (isr->isr_nhops + 1) * sizeof(struct in_addr) + OPTSIZ; |
OPTSIZ; |
|
|
|
/* |
/* |
* First save first hop for return route |
* First save first hop for return route |
*/ |
*/ |
p = &ip_srcrt.route[ip_nhops - 1]; |
p = &(isr->isr_routes[isr->isr_nhops - 1]); |
*(mtod(m, struct in_addr *)) = *p--; |
*(mtod(m, struct in_addr *)) = *p--; |
|
|
/* |
/* |
* Copy option fields and padding (nop) to mbuf. |
* Copy option fields and padding (nop) to mbuf. |
*/ |
*/ |
ip_srcrt.nop = IPOPT_NOP; |
isr->isr_nop = IPOPT_NOP; |
ip_srcrt.srcopt[IPOPT_OFFSET] = IPOPT_MINOFF; |
isr->isr_hdr[IPOPT_OFFSET] = IPOPT_MINOFF; |
memmove(mtod(m, char *) + sizeof(struct in_addr), &ip_srcrt.nop, |
memmove(mtod(m, char *) + sizeof(struct in_addr), &isr->isr_nop, |
OPTSIZ); |
OPTSIZ); |
q = (struct in_addr *)(mtod(m, char *) + |
q = (struct in_addr *)(mtod(m, char *) + |
sizeof(struct in_addr) + OPTSIZ); |
sizeof(struct in_addr) + OPTSIZ); |
Line 1190 ip_srcroute(void) |
|
Line 1293 ip_srcroute(void) |
|
* Record return path as an IP source route, |
* Record return path as an IP source route, |
* reversing the path (pointers are now aligned). |
* reversing the path (pointers are now aligned). |
*/ |
*/ |
while (p >= ip_srcrt.route) { |
while (p >= isr->isr_routes) { |
*q++ = *p--; |
*q++ = *p--; |
} |
} |
/* |
/* |
* Last hop goes to final destination. |
* Last hop goes to final destination. |
*/ |
*/ |
*q = ip_srcrt.dst; |
*q = isr->isr_dst; |
return (m); |
m_tag_delete(m0, mtag); |
|
return m; |
} |
} |
|
|
const int inetctlerrmap[PRC_NCMDS] = { |
const int inetctlerrmap[PRC_NCMDS] = { |
Line 1275 ip_forward(struct mbuf *m, int srcrt, st |
|
Line 1379 ip_forward(struct mbuf *m, int srcrt, st |
|
return; |
return; |
} |
} |
|
|
SOFTNET_LOCK(); |
|
|
|
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); |
SOFTNET_UNLOCK(); |
|
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) { |
ro = percpu_getref(ipforward_rt_percpu); |
|
rt = rtcache_lookup(ro, &u.dst); |
|
if (rt == NULL) { |
|
percpu_putref(ipforward_rt_percpu); |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, dest, 0); |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, dest, 0); |
SOFTNET_UNLOCK(); |
|
return; |
return; |
} |
} |
|
|
Line 1329 ip_forward(struct mbuf *m, int srcrt, st |
|
Line 1432 ip_forward(struct mbuf *m, int srcrt, st |
|
code = ICMP_REDIRECT_HOST; |
code = ICMP_REDIRECT_HOST; |
} |
} |
} |
} |
|
rtcache_unref(rt, ro); |
|
|
error = ip_output(m, NULL, &ipforward_rt, |
error = ip_output(m, NULL, &ipforward_rt, |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
Line 1357 ip_forward(struct mbuf *m, int srcrt, st |
|
Line 1461 ip_forward(struct mbuf *m, int srcrt, st |
|
m_freem(mcopy); |
m_freem(mcopy); |
} |
} |
|
|
SOFTNET_UNLOCK(); |
percpu_putref(ipforward_rt_percpu); |
return; |
return; |
|
|
redirect: |
redirect: |
error: |
error: |
if (mcopy == NULL) { |
if (mcopy == NULL) { |
SOFTNET_UNLOCK(); |
percpu_putref(ipforward_rt_percpu); |
return; |
return; |
} |
} |
|
|
|
|
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_NEEDFRAG; |
code = ICMP_UNREACH_NEEDFRAG; |
|
|
if ((rt = rtcache_validate(&ipforward_rt)) != NULL) |
if ((rt = rtcache_validate(ro)) != NULL) { |
destmtu = rt->rt_ifp->if_mtu; |
destmtu = rt->rt_ifp->if_mtu; |
|
rtcache_unref(rt, ro); |
|
} |
#ifdef IPSEC |
#ifdef IPSEC |
if (ipsec_used) |
if (ipsec_used) |
(void)ipsec4_forward(mcopy, &destmtu); |
(void)ipsec4_forward(mcopy, &destmtu); |
|
|
*/ |
*/ |
if (mcopy) |
if (mcopy) |
m_freem(mcopy); |
m_freem(mcopy); |
SOFTNET_UNLOCK(); |
percpu_putref(ipforward_rt_percpu); |
return; |
return; |
} |
} |
icmp_error(mcopy, type, code, dest, destmtu); |
icmp_error(mcopy, type, code, dest, destmtu); |
SOFTNET_UNLOCK(); |
percpu_putref(ipforward_rt_percpu); |
} |
} |
|
|
void |
void |
Line 1523 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
|
Line 1629 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
|
int error, tmp; |
int error, tmp; |
struct sysctlnode node; |
struct sysctlnode node; |
|
|
|
icmp_mtudisc_lock(); |
|
|
node = *rnode; |
node = *rnode; |
tmp = ip_mtudisc_timeout; |
tmp = ip_mtudisc_timeout; |
node.sysctl_data = &tmp; |
node.sysctl_data = &tmp; |
error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
if (error || newp == NULL) |
if (error || newp == NULL) |
return (error); |
goto out; |
if (tmp < 0) |
if (tmp < 0) { |
return (EINVAL); |
error = EINVAL; |
|
goto out; |
mutex_enter(softnet_lock); |
} |
|
|
ip_mtudisc_timeout = tmp; |
ip_mtudisc_timeout = tmp; |
rt_timer_queue_change(ip_mtudisc_timeout_q, ip_mtudisc_timeout); |
rt_timer_queue_change(ip_mtudisc_timeout_q, ip_mtudisc_timeout); |
|
error = 0; |
mutex_exit(softnet_lock); |
out: |
|
icmp_mtudisc_unlock(); |
return (0); |
return error; |
} |
} |
|
|
static int |
static int |