version 1.342, 2016/10/11 05:15:01 |
version 1.363, 2017/11/24 14:03:25 |
Line 95 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 95 __KERNEL_RCSID(0, "$NetBSD$"); |
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#ifdef _KERNEL_OPT |
#ifdef _KERNEL_OPT |
#include "opt_inet.h" |
#include "opt_inet.h" |
#include "opt_compat_netbsd.h" |
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#include "opt_gateway.h" |
#include "opt_gateway.h" |
#include "opt_ipsec.h" |
#include "opt_ipsec.h" |
#include "opt_mrouting.h" |
#include "opt_mrouting.h" |
#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 173 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 173 __KERNEL_RCSID(0, "$NetBSD$"); |
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#define IPMTUDISCTIMEOUT (10 * 60) /* as per RFC 1191 */ |
#define IPMTUDISCTIMEOUT (10 * 60) /* as per RFC 1191 */ |
#endif |
#endif |
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#ifdef COMPAT_50 |
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#include <compat/sys/time.h> |
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#include <compat/sys/socket.h> |
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#endif |
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/* |
/* |
* Note: DIRECTED_BROADCAST is handled this way so that previous |
* Note: DIRECTED_BROADCAST is handled this way so that previous |
* configuration using this option will Just Work. |
* configuration using this option will Just Work. |
Line 252 EVCNT_ATTACH_STATIC(ip_swcsum); |
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Line 247 EVCNT_ATTACH_STATIC(ip_swcsum); |
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#endif /* INET_CSUM_COUNTERS */ |
#endif /* INET_CSUM_COUNTERS */ |
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/* |
/* |
* We need to save the IP options in case a protocol wants to respond |
* Used to save the IP options in case a protocol wants to respond |
* to an incoming packet over the same route if the packet got here |
* to an incoming packet over the same route if the packet got here |
* using IP source routing. This allows connection establishment and |
* using IP source routing. This allows connection establishment and |
* maintenance when the remote end is on a network that is not known |
* maintenance when the remote end is on a network that is not known |
* to us. |
* to us. |
*/ |
*/ |
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struct ip_srcrt { |
static int ip_nhops = 0; |
int isr_nhops; /* number of hops */ |
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struct in_addr isr_dst; /* final destination */ |
static struct ip_srcrt { |
char isr_nop; /* one NOP to align */ |
struct in_addr dst; /* final destination */ |
char isr_hdr[IPOPT_OFFSET + 1]; /* OPTVAL, OLEN & OFFSET */ |
char nop; /* one NOP to align */ |
struct in_addr isr_routes[MAX_IPOPTLEN/sizeof(struct in_addr)]; |
char srcopt[IPOPT_OFFSET + 1]; /* OPTVAL, OLEN and OFFSET */ |
}; |
struct in_addr route[MAX_IPOPTLEN/sizeof(struct in_addr)]; |
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} ip_srcrt; |
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static int ip_drainwanted; |
static int ip_drainwanted; |
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struct sockaddr_in ipaddr = { |
static void save_rte(struct mbuf *, u_char *, struct in_addr); |
.sin_len = sizeof(ipaddr), |
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.sin_family = AF_INET, |
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}; |
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static void save_rte(u_char *, struct in_addr); |
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#ifdef MBUFTRACE |
#ifdef MBUFTRACE |
struct mowner ip_rx_mowner = MOWNER_INIT("internet", "rx"); |
struct mowner ip_rx_mowner = MOWNER_INIT("internet", "rx"); |
Line 286 static void ipintr(void *); |
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Line 274 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 **); |
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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 282 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 |
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#define SOFTNET_LOCK() mutex_enter(softnet_lock) |
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#define SOFTNET_UNLOCK() mutex_exit(softnet_lock) |
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#else |
#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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ipforward_rt_percpu = percpu_alloc(sizeof(struct route)); |
ipforward_rt_percpu = percpu_alloc(sizeof(struct route)); |
if (ipforward_rt_percpu == NULL) |
ip_mtudisc_timeout_q = rt_timer_queue_create(ip_mtudisc_timeout); |
panic("failed to allocate ipforward_rt_percpu"); |
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} |
} |
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static struct in_ifaddr * |
static struct in_ifaddr * |
Line 382 ip_match_our_address(struct ifnet *ifp, |
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Line 371 ip_match_our_address(struct ifnet *ifp, |
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continue; |
continue; |
if (checkif && ia->ia_ifp != ifp) |
if (checkif && ia->ia_ifp != ifp) |
continue; |
continue; |
if ((ia->ia_ifp->if_flags & IFF_UP) != 0 && |
if ((ia->ia_ifp->if_flags & IFF_UP) == 0) { |
(ia->ia4_flags & IN_IFF_DETACHED) == 0) |
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break; |
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else |
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(*downmatch)++; |
(*downmatch)++; |
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continue; |
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} |
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if (ia->ia4_flags & IN_IFF_DETACHED && |
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(ifp->if_flags & IFF_LOOPBACK) == 0) |
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continue; |
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break; |
} |
} |
} |
} |
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Line 403 ip_match_our_address_broadcast(struct if |
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Line 395 ip_match_our_address_broadcast(struct if |
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if (ifa->ifa_addr->sa_family != AF_INET) |
if (ifa->ifa_addr->sa_family != AF_INET) |
continue; |
continue; |
ia = ifatoia(ifa); |
ia = ifatoia(ifa); |
if (ia->ia4_flags & (IN_IFF_NOTREADY | IN_IFF_DETACHED)) |
if (ia->ia4_flags & IN_IFF_NOTREADY) |
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continue; |
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if (ia->ia4_flags & IN_IFF_DETACHED && |
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(ifp->if_flags & IFF_LOOPBACK) == 0) |
continue; |
continue; |
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
Line 437 ipintr(void *arg __unused) |
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Line 432 ipintr(void *arg __unused) |
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KASSERT(cpu_softintr_p()); |
KASSERT(cpu_softintr_p()); |
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mutex_enter(softnet_lock); |
SOFTNET_LOCK_UNLESS_NET_MPSAFE(); |
while ((m = pktq_dequeue(ip_pktq)) != NULL) { |
while ((m = pktq_dequeue(ip_pktq)) != NULL) { |
ip_input(m); |
ip_input(m); |
} |
} |
mutex_exit(softnet_lock); |
SOFTNET_UNLOCK_UNLESS_NET_MPSAFE(); |
} |
} |
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/* |
/* |
Line 614 ip_input(struct mbuf *m) |
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Line 609 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 647 ip_input(struct mbuf *m) |
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Line 641 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 659 ip_input(struct mbuf *m) |
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Line 654 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 758 ip_input(struct mbuf *m) |
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Line 754 ip_input(struct mbuf *m) |
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return; |
return; |
} |
} |
#ifdef IPSEC |
#ifdef IPSEC |
/* Perform IPsec, if any. */ |
/* Check the security policy (SP) for the packet */ |
if (ipsec_used) { |
if (ipsec_used) { |
SOFTNET_LOCK(); |
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if (ipsec4_input(m, IP_FORWARDING | |
if (ipsec4_input(m, IP_FORWARDING | |
(ip_directedbcast ? IP_ALLOWBROADCAST : 0)) != 0) { |
(ip_directedbcast ? IP_ALLOWBROADCAST : 0)) != 0) { |
SOFTNET_UNLOCK(); |
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goto out; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
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} |
} |
#endif |
#endif |
ip_forward(m, srcrt, ifp); |
ip_forward(m, srcrt, ifp); |
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*/ |
*/ |
if (ipsec_used && |
if (ipsec_used && |
(inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0) { |
(inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0) { |
SOFTNET_LOCK(); |
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if (ipsec4_input(m, 0) != 0) { |
if (ipsec4_input(m, 0) != 0) { |
SOFTNET_UNLOCK(); |
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goto out; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
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} |
} |
#endif |
#endif |
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const int off = hlen, nh = ip->ip_p; |
const int off = hlen, nh = ip->ip_p; |
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SOFTNET_LOCK(); |
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(*inetsw[ip_protox[nh]].pr_input)(m, off, nh); |
(*inetsw[ip_protox[nh]].pr_input)(m, off, nh); |
SOFTNET_UNLOCK(); |
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return; |
return; |
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out: |
out: |
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ip_slowtimo(void) |
ip_slowtimo(void) |
{ |
{ |
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mutex_enter(softnet_lock); |
SOFTNET_KERNEL_LOCK_UNLESS_NET_MPSAFE(); |
KERNEL_LOCK(1, NULL); |
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ip_reass_slowtimo(); |
ip_reass_slowtimo(); |
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KERNEL_UNLOCK_ONE(NULL); |
SOFTNET_KERNEL_UNLOCK_UNLESS_NET_MPSAFE(); |
mutex_exit(softnet_lock); |
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} |
} |
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/* |
/* |
Line 894 ip_dooptions(struct mbuf *m) |
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Line 880 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; |
struct ifaddr *ifa; |
struct ifaddr *ifa = NULL; |
int s; |
int s; |
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dst = ip->ip_dst; |
dst = ip->ip_dst; |
Line 932 ip_dooptions(struct mbuf *m) |
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Line 918 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 970 ip_dooptions(struct mbuf *m) |
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Line 962 ip_dooptions(struct mbuf *m) |
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/* |
/* |
* End of source route. Should be for us. |
* End of source route. Should be for us. |
*/ |
*/ |
save_rte(cp, ip->ip_src); |
save_rte(m, cp, ip->ip_src); |
break; |
break; |
} |
} |
/* |
/* |
Line 978 ip_dooptions(struct mbuf *m) |
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Line 970 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)); |
s = pserialize_read_enter(); |
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if (opt == IPOPT_SSRR) { |
if (opt == IPOPT_SSRR) { |
ifa = ifa_ifwithladdr(sintosa(&ipaddr)); |
ifa = ifa_ifwithladdr_psref(sintosa(&ipaddr), |
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&psref); |
if (ifa != NULL) |
if (ifa != NULL) |
ia = ifatoia(ifa); |
ia = ifatoia(ifa); |
else |
else |
ia = NULL; |
ia = NULL; |
} else { |
} else { |
ia = ip_rtaddr(ipaddr.sin_addr); |
ia = ip_rtaddr(ipaddr.sin_addr, &psref); |
} |
} |
if (ia == NULL) { |
if (ia == NULL) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_SRCFAIL; |
code = ICMP_UNREACH_SRCFAIL; |
pserialize_read_exit(s); |
|
goto bad; |
goto bad; |
} |
} |
ip->ip_dst = ipaddr.sin_addr; |
ip->ip_dst = ipaddr.sin_addr; |
bcopy((void *)&ia->ia_addr.sin_addr, |
bcopy((void *)&ia->ia_addr.sin_addr, |
(void *)(cp + off), sizeof(struct in_addr)); |
(void *)(cp + off), sizeof(struct in_addr)); |
pserialize_read_exit(s); |
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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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: |
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if (optlen < IPOPT_OFFSET + sizeof(*cp)) { |
if (optlen < IPOPT_OFFSET + sizeof(*cp)) { |
code = &cp[IPOPT_OLEN] - (u_char *)ip; |
code = &cp[IPOPT_OLEN] - (u_char *)ip; |
goto bad; |
goto bad; |
Line 1026 ip_dooptions(struct mbuf *m) |
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Line 1024 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). |
*/ |
*/ |
s = pserialize_read_enter(); |
ifa = ifa_ifwithaddr_psref(sintosa(&ipaddr), &psref); |
ifa = ifa_ifwithaddr(sintosa(&ipaddr)); |
|
if (ifa == NULL) { |
if (ifa == NULL) { |
ia = ip_rtaddr(ipaddr.sin_addr); |
ia = ip_rtaddr(ipaddr.sin_addr, &psref); |
if (ia == NULL) { |
if (ia == NULL) { |
pserialize_read_exit(s); |
|
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_HOST; |
code = ICMP_UNREACH_HOST; |
goto bad; |
goto bad; |
Line 1041 ip_dooptions(struct mbuf *m) |
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Line 1037 ip_dooptions(struct mbuf *m) |
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} |
} |
bcopy((void *)&ia->ia_addr.sin_addr, |
bcopy((void *)&ia->ia_addr.sin_addr, |
(void *)(cp + off), sizeof(struct in_addr)); |
(void *)(cp + off), sizeof(struct in_addr)); |
pserialize_read_exit(s); |
ia4_release(ia, &psref); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
break; |
break; |
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} |
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case IPOPT_TS: |
case IPOPT_TS: |
code = cp - (u_char *)ip; |
code = cp - (u_char *)ip; |
Line 1073 ip_dooptions(struct mbuf *m) |
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Line 1070 ip_dooptions(struct mbuf *m) |
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case IPOPT_TS_TSANDADDR: { |
case IPOPT_TS_TSANDADDR: { |
struct ifnet *rcvif; |
struct ifnet *rcvif; |
int _s, _ss; |
int _s, _ss; |
|
struct sockaddr_in ipaddr = { |
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.sin_len = sizeof(ipaddr), |
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.sin_family = AF_INET, |
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}; |
|
|
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 1083 ip_dooptions(struct mbuf *m) |
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Line 1084 ip_dooptions(struct mbuf *m) |
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ipaddr.sin_addr = dst; |
ipaddr.sin_addr = dst; |
_ss = pserialize_read_enter(); |
_ss = pserialize_read_enter(); |
rcvif = m_get_rcvif(m, &_s); |
rcvif = m_get_rcvif(m, &_s); |
ifa = ifaof_ifpforaddr(sintosa(&ipaddr), rcvif); |
if (__predict_true(rcvif != NULL)) { |
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ifa = ifaof_ifpforaddr(sintosa(&ipaddr), |
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rcvif); |
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} |
m_put_rcvif(rcvif, &_s); |
m_put_rcvif(rcvif, &_s); |
if (ifa == NULL) { |
if (ifa == NULL) { |
pserialize_read_exit(_ss); |
pserialize_read_exit(_ss); |
Line 1097 ip_dooptions(struct mbuf *m) |
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Line 1101 ip_dooptions(struct mbuf *m) |
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break; |
break; |
} |
} |
|
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case IPOPT_TS_PRESPEC: |
case IPOPT_TS_PRESPEC: { |
|
struct sockaddr_in ipaddr = { |
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.sin_len = sizeof(ipaddr), |
|
.sin_family = AF_INET, |
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}; |
|
|
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 1115 ip_dooptions(struct mbuf *m) |
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Line 1124 ip_dooptions(struct mbuf *m) |
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pserialize_read_exit(s); |
pserialize_read_exit(s); |
ipt->ipt_ptr += sizeof(struct in_addr); |
ipt->ipt_ptr += sizeof(struct in_addr); |
break; |
break; |
|
} |
|
|
default: |
default: |
/* XXX can't take &ipt->ipt_flg */ |
/* XXX can't take &ipt->ipt_flg */ |
|
|
* 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 1172 ip_rtaddr(struct in_addr dst) |
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Line 1182 ip_rtaddr(struct in_addr dst) |
|
|
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sockaddr_in_init(&u.dst4, &dst, 0); |
sockaddr_in_init(&u.dst4, &dst, 0); |
|
|
SOFTNET_LOCK(); |
|
ro = percpu_getref(ipforward_rt_percpu); |
ro = percpu_getref(ipforward_rt_percpu); |
rt = rtcache_lookup(ro, &u.dst); |
rt = rtcache_lookup(ro, &u.dst); |
percpu_putref(ipforward_rt_percpu); |
if (rt == NULL) { |
SOFTNET_UNLOCK(); |
percpu_putref(ipforward_rt_percpu); |
if (rt == NULL) |
|
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 1188 ip_rtaddr(struct in_addr dst) |
|
Line 1201 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; |
|
|
|
mtag = m_tag_get(PACKET_TAG_SRCROUTE, sizeof(*isr), M_NOWAIT); |
|
if (mtag == NULL) |
return; |
return; |
memcpy((void *)ip_srcrt.srcopt, (void *)option, olen); |
isr = (struct ip_srcrt *)(mtag + 1); |
ip_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr); |
|
ip_srcrt.dst = dst; |
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 1206 save_rte(u_char *option, struct in_addr |
|
Line 1228 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 1244 ip_srcroute(void) |
|
Line 1273 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 1330 ip_forward(struct mbuf *m, int srcrt, st |
|
Line 1360 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); |
|
|
ro = percpu_getref(ipforward_rt_percpu); |
ro = percpu_getref(ipforward_rt_percpu); |
if ((rt = rtcache_lookup(ro, &u.dst)) == NULL) { |
rt = rtcache_lookup(ro, &u.dst); |
|
if (rt == NULL) { |
percpu_putref(ipforward_rt_percpu); |
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 1386 ip_forward(struct mbuf *m, int srcrt, st |
|
Line 1413 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, ro, |
error = ip_output(m, NULL, ro, |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
Line 1415 ip_forward(struct mbuf *m, int srcrt, st |
|
Line 1443 ip_forward(struct mbuf *m, int srcrt, st |
|
} |
} |
|
|
percpu_putref(ipforward_rt_percpu); |
percpu_putref(ipforward_rt_percpu); |
SOFTNET_UNLOCK(); |
|
return; |
return; |
|
|
redirect: |
redirect: |
error: |
error: |
if (mcopy == NULL) { |
if (mcopy == NULL) { |
percpu_putref(ipforward_rt_percpu); |
percpu_putref(ipforward_rt_percpu); |
SOFTNET_UNLOCK(); |
|
return; |
return; |
} |
} |
|
|
|
|
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_NEEDFRAG; |
code = ICMP_UNREACH_NEEDFRAG; |
|
|
if ((rt = rtcache_validate(ro)) != 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); |
percpu_putref(ipforward_rt_percpu); |
percpu_putref(ipforward_rt_percpu); |
SOFTNET_UNLOCK(); |
|
return; |
return; |
} |
} |
icmp_error(mcopy, type, code, dest, destmtu); |
icmp_error(mcopy, type, code, dest, destmtu); |
percpu_putref(ipforward_rt_percpu); |
percpu_putref(ipforward_rt_percpu); |
SOFTNET_UNLOCK(); |
|
} |
} |
|
|
void |
void |
Line 1477 ip_savecontrol(struct inpcb *inp, struct |
|
Line 1503 ip_savecontrol(struct inpcb *inp, struct |
|
struct mbuf *m) |
struct mbuf *m) |
{ |
{ |
struct socket *so = inp->inp_socket; |
struct socket *so = inp->inp_socket; |
ifnet_t *ifp; |
|
int inpflags = inp->inp_flags; |
int inpflags = inp->inp_flags; |
struct psref psref; |
|
|
|
ifp = m_get_rcvif_psref(m, &psref); |
if (SOOPT_TIMESTAMP(so->so_options)) |
if (__predict_false(ifp == NULL)) |
mp = sbsavetimestamp(so->so_options, m, mp); |
return; /* XXX should report error? */ |
|
|
|
if (so->so_options & SO_TIMESTAMP |
if (inpflags & INP_RECVDSTADDR) { |
#ifdef SO_OTIMESTAMP |
*mp = sbcreatecontrol(&ip->ip_dst, |
|| so->so_options & SO_OTIMESTAMP |
sizeof(struct in_addr), IP_RECVDSTADDR, IPPROTO_IP); |
#endif |
|
) { |
|
struct timeval tv; |
|
|
|
microtime(&tv); |
|
#ifdef SO_OTIMESTAMP |
|
if (so->so_options & SO_OTIMESTAMP) { |
|
struct timeval50 tv50; |
|
timeval_to_timeval50(&tv, &tv50); |
|
*mp = sbcreatecontrol((void *) &tv50, sizeof(tv50), |
|
SCM_OTIMESTAMP, SOL_SOCKET); |
|
} else |
|
#endif |
|
*mp = sbcreatecontrol((void *) &tv, sizeof(tv), |
|
SCM_TIMESTAMP, SOL_SOCKET); |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
if (inpflags & INP_RECVDSTADDR) { |
|
*mp = sbcreatecontrol((void *) &ip->ip_dst, |
if (inpflags & INP_RECVTTL) { |
sizeof(struct in_addr), IP_RECVDSTADDR, IPPROTO_IP); |
*mp = sbcreatecontrol(&ip->ip_ttl, |
|
sizeof(uint8_t), IP_RECVTTL, IPPROTO_IP); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
|
|
|
struct psref psref; |
|
ifnet_t *ifp = m_get_rcvif_psref(m, &psref); |
|
if (__predict_false(ifp == NULL)) { |
|
#ifdef DIAGNOSTIC |
|
printf("%s: missing receive interface\n", __func__); |
|
#endif |
|
return; /* XXX should report error? */ |
|
} |
|
|
if (inpflags & INP_RECVPKTINFO) { |
if (inpflags & INP_RECVPKTINFO) { |
struct in_pktinfo ipi; |
struct in_pktinfo ipi; |
ipi.ipi_addr = ip->ip_src; |
ipi.ipi_addr = ip->ip_src; |
ipi.ipi_ifindex = ifp->if_index; |
ipi.ipi_ifindex = ifp->if_index; |
*mp = sbcreatecontrol((void *) &ipi, |
*mp = sbcreatecontrol(&ipi, |
sizeof(ipi), IP_RECVPKTINFO, IPPROTO_IP); |
sizeof(ipi), IP_RECVPKTINFO, IPPROTO_IP); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
Line 1525 ip_savecontrol(struct inpcb *inp, struct |
|
Line 1544 ip_savecontrol(struct inpcb *inp, struct |
|
struct in_pktinfo ipi; |
struct in_pktinfo ipi; |
ipi.ipi_addr = ip->ip_dst; |
ipi.ipi_addr = ip->ip_dst; |
ipi.ipi_ifindex = ifp->if_index; |
ipi.ipi_ifindex = ifp->if_index; |
*mp = sbcreatecontrol((void *) &ipi, |
*mp = sbcreatecontrol(&ipi, |
sizeof(ipi), IP_PKTINFO, IPPROTO_IP); |
sizeof(ipi), IP_PKTINFO, IPPROTO_IP); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
Line 1539 ip_savecontrol(struct inpcb *inp, struct |
|
Line 1558 ip_savecontrol(struct inpcb *inp, struct |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
if (inpflags & INP_RECVTTL) { |
|
*mp = sbcreatecontrol((void *) &ip->ip_ttl, |
|
sizeof(uint8_t), IP_RECVTTL, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
m_put_rcvif_psref(ifp, &psref); |
m_put_rcvif_psref(ifp, &psref); |
} |
} |
|
|
Line 1584 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
|
Line 1597 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 |