version 1.15, 1995/04/13 06:33:21 |
version 1.53.2.1, 1998/05/09 03:33:00 |
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#include <sys/domain.h> |
#include <sys/domain.h> |
#include <sys/protosw.h> |
#include <sys/protosw.h> |
#include <sys/socket.h> |
#include <sys/socket.h> |
|
#include <sys/socketvar.h> |
#include <sys/errno.h> |
#include <sys/errno.h> |
#include <sys/time.h> |
#include <sys/time.h> |
#include <sys/kernel.h> |
#include <sys/kernel.h> |
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#include <sys/proc.h> |
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|
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#include <vm/vm.h> |
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#include <sys/sysctl.h> |
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#include <net/if.h> |
#include <net/if.h> |
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#include <net/if_dl.h> |
#include <net/route.h> |
#include <net/route.h> |
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#include <net/pfil.h> |
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#include <netinet/in.h> |
#include <netinet/in.h> |
#include <netinet/in_systm.h> |
#include <netinet/in_systm.h> |
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|
#include <netinet/ip_var.h> |
#include <netinet/ip_var.h> |
#include <netinet/ip_icmp.h> |
#include <netinet/ip_icmp.h> |
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/* XXX should really put this in libkern.h */ |
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#define offsetof(type, member) ((size_t)(&((type *)0)->member)) |
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#ifndef IPFORWARDING |
#ifndef IPFORWARDING |
#ifdef GATEWAY |
#ifdef GATEWAY |
#define IPFORWARDING 1 /* forward IP packets not for us */ |
#define IPFORWARDING 1 /* forward IP packets not for us */ |
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#ifndef IPSENDREDIRECTS |
#ifndef IPSENDREDIRECTS |
#define IPSENDREDIRECTS 1 |
#define IPSENDREDIRECTS 1 |
#endif |
#endif |
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#ifndef IPFORWSRCRT |
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#define IPFORWSRCRT 1 /* forward source-routed packets */ |
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#endif |
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#ifndef IPALLOWSRCRT |
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#define IPALLOWSRCRT 1 /* allow source-routed packets */ |
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#endif |
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#ifndef IPMTUDISC |
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#define IPMTUDISC 0 |
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#endif |
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#ifndef IPMTUDISCTIMEOUT |
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#define IPMTUDISCTIMEOUT (10 * 60) /* as per RFC 1191 */ |
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#endif |
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/* |
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* Note: DIRECTED_BROADCAST is handled this way so that previous |
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* configuration using this option will Just Work. |
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*/ |
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#ifndef IPDIRECTEDBCAST |
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#ifdef DIRECTED_BROADCAST |
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#define IPDIRECTEDBCAST 1 |
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#else |
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#define IPDIRECTEDBCAST 0 |
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#endif /* DIRECTED_BROADCAST */ |
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#endif /* IPDIRECTEDBCAST */ |
int ipforwarding = IPFORWARDING; |
int ipforwarding = IPFORWARDING; |
int ipsendredirects = IPSENDREDIRECTS; |
int ipsendredirects = IPSENDREDIRECTS; |
int ip_defttl = IPDEFTTL; |
int ip_defttl = IPDEFTTL; |
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int ip_forwsrcrt = IPFORWSRCRT; |
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int ip_directedbcast = IPDIRECTEDBCAST; |
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int ip_allowsrcrt = IPALLOWSRCRT; |
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int ip_mtudisc = IPMTUDISC; |
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u_int ip_mtudisc_timeout = IPMTUDISCTIMEOUT; |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
int ipprintfs = 0; |
int ipprintfs = 0; |
#endif |
#endif |
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struct rttimer_queue *ip_mtudisc_timeout_q = NULL; |
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extern struct domain inetdomain; |
extern struct domain inetdomain; |
extern struct protosw inetsw[]; |
extern struct protosw inetsw[]; |
u_char ip_protox[IPPROTO_MAX]; |
u_char ip_protox[IPPROTO_MAX]; |
int ipqmaxlen = IFQ_MAXLEN; |
int ipqmaxlen = IFQ_MAXLEN; |
struct in_ifaddr *in_ifaddr; /* first inet address */ |
struct in_ifaddrhead in_ifaddr; |
struct ifqueue ipintrq; |
struct ifqueue ipintrq; |
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/* |
/* |
Line 96 static struct ip_srcrt { |
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Line 138 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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#ifdef GATEWAY |
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extern int if_index; |
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u_int32_t *ip_ifmatrix; |
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#endif |
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static void save_rte __P((u_char *, struct in_addr)); |
static void save_rte __P((u_char *, struct in_addr)); |
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/* |
/* |
* IP initialization: fill in IP protocol switch table. |
* IP initialization: fill in IP protocol switch table. |
* All protocols not implemented in kernel go to raw IP protocol handler. |
* All protocols not implemented in kernel go to raw IP protocol handler. |
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if (pr->pr_domain->dom_family == PF_INET && |
if (pr->pr_domain->dom_family == PF_INET && |
pr->pr_protocol && pr->pr_protocol != IPPROTO_RAW) |
pr->pr_protocol && pr->pr_protocol != IPPROTO_RAW) |
ip_protox[pr->pr_protocol] = pr - inetsw; |
ip_protox[pr->pr_protocol] = pr - inetsw; |
ipq.next = ipq.prev = &ipq; |
LIST_INIT(&ipq); |
ip_id = time.tv_sec & 0xffff; |
ip_id = time.tv_sec & 0xffff; |
ipintrq.ifq_maxlen = ipqmaxlen; |
ipintrq.ifq_maxlen = ipqmaxlen; |
#ifdef GATEWAY |
TAILQ_INIT(&in_ifaddr); |
i = (if_index + 1) * (if_index + 1) * sizeof (u_int32_t); |
|
ip_ifmatrix = (u_int32_t *) malloc(i, M_RTABLE, M_WAITOK); |
if (ip_mtudisc != 0) |
bzero((char *)ip_ifmatrix, i); |
ip_mtudisc_timeout_q = |
#endif |
rt_timer_queue_create(ip_mtudisc_timeout); |
} |
} |
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struct sockaddr_in ipaddr = { sizeof(ipaddr), AF_INET }; |
struct sockaddr_in ipaddr = { sizeof(ipaddr), AF_INET }; |
Line 142 struct route ipforward_rt; |
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Line 180 struct route ipforward_rt; |
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void |
void |
ipintr() |
ipintr() |
{ |
{ |
register struct ip *ip; |
register struct ip *ip = NULL; |
register struct mbuf *m; |
register struct mbuf *m; |
register struct ipq *fp; |
register struct ipq *fp; |
register struct in_ifaddr *ia; |
register struct in_ifaddr *ia; |
int hlen, s; |
struct ipqent *ipqe; |
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int hlen = 0, mff, len, s; |
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#ifdef PFIL_HOOKS |
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struct packet_filter_hook *pfh; |
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struct mbuf *m0; |
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int rv; |
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#endif /* PFIL_HOOKS */ |
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next: |
next: |
/* |
/* |
|
|
* If no IP addresses have been set yet but the interfaces |
* If no IP addresses have been set yet but the interfaces |
* are receiving, can't do anything with incoming packets yet. |
* are receiving, can't do anything with incoming packets yet. |
*/ |
*/ |
if (in_ifaddr == NULL) |
if (in_ifaddr.tqh_first == 0) |
goto bad; |
goto bad; |
ipstat.ips_total++; |
ipstat.ips_total++; |
if (m->m_len < sizeof (struct ip) && |
if (m->m_len < sizeof (struct ip) && |
|
|
} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
} |
} |
if (ip->ip_sum = in_cksum(m, hlen)) { |
if ((ip->ip_sum = in_cksum(m, hlen)) != 0) { |
ipstat.ips_badsum++; |
ipstat.ips_badsum++; |
goto bad; |
goto bad; |
} |
} |
|
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* Convert fields to host representation. |
* Convert fields to host representation. |
*/ |
*/ |
NTOHS(ip->ip_len); |
NTOHS(ip->ip_len); |
if (ip->ip_len < hlen) { |
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ipstat.ips_badlen++; |
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goto bad; |
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} |
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NTOHS(ip->ip_id); |
NTOHS(ip->ip_id); |
NTOHS(ip->ip_off); |
NTOHS(ip->ip_off); |
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len = ip->ip_len; |
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/* |
/* |
* Check that the amount of data in the buffers |
* Check that the amount of data in the buffers |
|
|
* Trim mbufs if longer than we expect. |
* Trim mbufs if longer than we expect. |
* Drop packet if shorter than we expect. |
* Drop packet if shorter than we expect. |
*/ |
*/ |
if (m->m_pkthdr.len < ip->ip_len) { |
if (m->m_pkthdr.len < len) { |
ipstat.ips_tooshort++; |
ipstat.ips_tooshort++; |
goto bad; |
goto bad; |
} |
} |
if (m->m_pkthdr.len > ip->ip_len) { |
if (m->m_pkthdr.len > len) { |
if (m->m_len == m->m_pkthdr.len) { |
if (m->m_len == m->m_pkthdr.len) { |
m->m_len = ip->ip_len; |
m->m_len = len; |
m->m_pkthdr.len = ip->ip_len; |
m->m_pkthdr.len = len; |
} else |
} else |
m_adj(m, ip->ip_len - m->m_pkthdr.len); |
m_adj(m, len - m->m_pkthdr.len); |
} |
} |
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#ifdef PFIL_HOOKS |
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/* |
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* Run through list of hooks for input packets. |
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*/ |
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m0 = m; |
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for (pfh = pfil_hook_get(PFIL_IN); pfh; pfh = pfh->pfil_link.le_next) |
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if (pfh->pfil_func) { |
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rv = pfh->pfil_func(ip, hlen, m->m_pkthdr.rcvif, 0, &m0); |
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if (rv) |
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goto next; |
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ip = mtod(m = m0, struct ip *); |
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} |
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#endif /* PFIL_HOOKS */ |
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/* |
/* |
* Process options and, if not destined for us, |
* Process options and, if not destined for us, |
* ship it on. ip_dooptions returns 1 when an |
* ship it on. ip_dooptions returns 1 when an |
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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. |
*/ |
*/ |
for (ia = in_ifaddr; ia; ia = ia->ia_next) { |
for (ia = in_ifaddr.tqh_first; ia; ia = ia->ia_list.tqe_next) { |
#define satosin(sa) ((struct sockaddr_in *)(sa)) |
if (in_hosteq(ip->ip_dst, ia->ia_addr.sin_addr)) |
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if (IA_SIN(ia)->sin_addr.s_addr == ip->ip_dst.s_addr) |
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goto ours; |
goto ours; |
if ( |
if (((ip_directedbcast == 0) || (ip_directedbcast && |
#ifdef DIRECTED_BROADCAST |
ia->ia_ifp == m->m_pkthdr.rcvif)) && |
ia->ia_ifp == m->m_pkthdr.rcvif && |
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#endif |
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(ia->ia_ifp->if_flags & IFF_BROADCAST)) { |
(ia->ia_ifp->if_flags & IFF_BROADCAST)) { |
u_int32_t t; |
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
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in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
if (satosin(&ia->ia_broadaddr)->sin_addr.s_addr == |
/* |
ip->ip_dst.s_addr) |
* Look for all-0's host part (old broadcast addr), |
goto ours; |
* either for subnet or net. |
if (ip->ip_dst.s_addr == ia->ia_netbroadcast.s_addr) |
*/ |
goto ours; |
ip->ip_dst.s_addr == ia->ia_subnet || |
/* |
ip->ip_dst.s_addr == ia->ia_net) |
* Look for all-0's host part (old broadcast addr), |
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* either for subnet or net. |
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*/ |
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t = ntohl(ip->ip_dst.s_addr); |
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if (t == ia->ia_subnet) |
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goto ours; |
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if (t == ia->ia_net) |
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goto ours; |
goto ours; |
} |
} |
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/* |
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* An interface with IP address zero accepts |
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* all packets that arrive on that interface. |
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*/ |
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if ((ia->ia_ifp == m->m_pkthdr.rcvif) && |
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in_nullhost(ia->ia_addr.sin_addr)) |
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goto ours; |
} |
} |
if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) { |
if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
struct in_multi *inm; |
struct in_multi *inm; |
#ifdef MROUTING |
#ifdef MROUTING |
extern struct socket *ip_mrouter; |
extern struct socket *ip_mrouter; |
|
|
} |
} |
goto ours; |
goto ours; |
} |
} |
if (ip->ip_dst.s_addr == (u_int32_t)INADDR_BROADCAST) |
if (ip->ip_dst.s_addr == INADDR_BROADCAST || |
goto ours; |
in_nullhost(ip->ip_dst)) |
if (ip->ip_dst.s_addr == INADDR_ANY) |
|
goto ours; |
goto ours; |
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/* |
/* |
|
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* if the packet was previously fragmented, |
* if the packet was previously fragmented, |
* 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 &~ IP_DF) { |
if (ip->ip_off & ~(IP_DF|IP_RF)) { |
if (m->m_flags & M_EXT) { /* XXX */ |
|
if ((m = m_pullup(m, sizeof (struct ip))) == 0) { |
|
ipstat.ips_toosmall++; |
|
goto next; |
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} |
|
ip = mtod(m, struct ip *); |
|
} |
|
/* |
/* |
* Look for queue of fragments |
* Look for queue of fragments |
* of this datagram. |
* of this datagram. |
*/ |
*/ |
for (fp = ipq.next; fp != &ipq; fp = fp->next) |
for (fp = ipq.lh_first; fp != NULL; fp = fp->ipq_q.le_next) |
if (ip->ip_id == fp->ipq_id && |
if (ip->ip_id == fp->ipq_id && |
ip->ip_src.s_addr == fp->ipq_src.s_addr && |
in_hosteq(ip->ip_src, fp->ipq_src) && |
ip->ip_dst.s_addr == fp->ipq_dst.s_addr && |
in_hosteq(ip->ip_dst, fp->ipq_dst) && |
ip->ip_p == fp->ipq_p) |
ip->ip_p == fp->ipq_p) |
goto found; |
goto found; |
fp = 0; |
fp = 0; |
|
|
|
|
/* |
/* |
* Adjust ip_len to not reflect header, |
* Adjust ip_len to not reflect header, |
* set ip_mff if more fragments are expected, |
* set ipqe_mff if more fragments are expected, |
* convert offset of this to bytes. |
* convert offset of this to bytes. |
*/ |
*/ |
ip->ip_len -= hlen; |
ip->ip_len -= hlen; |
((struct ipasfrag *)ip)->ipf_mff &= ~1; |
mff = (ip->ip_off & IP_MF) != 0; |
if (ip->ip_off & IP_MF) |
if (mff) { |
((struct ipasfrag *)ip)->ipf_mff |= 1; |
/* |
|
* Make sure that fragments have a data length |
|
* that's a non-zero multiple of 8 bytes. |
|
*/ |
|
if (ip->ip_len == 0 || (ip->ip_len & 0x7) != 0) { |
|
ipstat.ips_badfrags++; |
|
goto bad; |
|
} |
|
} |
ip->ip_off <<= 3; |
ip->ip_off <<= 3; |
|
|
/* |
/* |
|
|
* or if this is not the first fragment, |
* or if this is not the first fragment, |
* attempt reassembly; if it succeeds, proceed. |
* attempt reassembly; if it succeeds, proceed. |
*/ |
*/ |
if (((struct ipasfrag *)ip)->ipf_mff & 1 || ip->ip_off) { |
if (mff || ip->ip_off) { |
ipstat.ips_fragments++; |
ipstat.ips_fragments++; |
ip = ip_reass((struct ipasfrag *)ip, fp); |
MALLOC(ipqe, struct ipqent *, sizeof (struct ipqent), |
if (ip == 0) |
M_IPQ, M_NOWAIT); |
|
if (ipqe == NULL) { |
|
ipstat.ips_rcvmemdrop++; |
|
goto bad; |
|
} |
|
ipqe->ipqe_mff = mff; |
|
ipqe->ipqe_m = m; |
|
ipqe->ipqe_ip = ip; |
|
m = ip_reass(ipqe, fp); |
|
if (m == 0) |
goto next; |
goto next; |
ipstat.ips_reassembled++; |
ipstat.ips_reassembled++; |
m = dtom(ip); |
ip = mtod(m, struct ip *); |
} else |
} else |
if (fp) |
if (fp) |
ip_freef(fp); |
ip_freef(fp); |
|
|
* reassembly of this datagram already exists, then it |
* reassembly of this datagram already exists, then it |
* is given as fp; otherwise have to make a chain. |
* is given as fp; otherwise have to make a chain. |
*/ |
*/ |
struct ip * |
struct mbuf * |
ip_reass(ip, fp) |
ip_reass(ipqe, fp) |
register struct ipasfrag *ip; |
register struct ipqent *ipqe; |
register struct ipq *fp; |
register struct ipq *fp; |
{ |
{ |
register struct mbuf *m = dtom(ip); |
register struct mbuf *m = ipqe->ipqe_m; |
register struct ipasfrag *q; |
register struct ipqent *nq, *p, *q; |
|
struct ip *ip; |
struct mbuf *t; |
struct mbuf *t; |
int hlen = ip->ip_hl << 2; |
int hlen = ipqe->ipqe_ip->ip_hl << 2; |
int i, next; |
int i, next; |
|
|
/* |
/* |
Line 434 ip_reass(ip, fp) |
|
Line 495 ip_reass(ip, fp) |
|
* If first fragment to arrive, create a reassembly queue. |
* If first fragment to arrive, create a reassembly queue. |
*/ |
*/ |
if (fp == 0) { |
if (fp == 0) { |
if ((t = m_get(M_DONTWAIT, MT_FTABLE)) == NULL) |
MALLOC(fp, struct ipq *, sizeof (struct ipq), |
|
M_FTABLE, M_NOWAIT); |
|
if (fp == NULL) |
goto dropfrag; |
goto dropfrag; |
fp = mtod(t, struct ipq *); |
LIST_INSERT_HEAD(&ipq, fp, ipq_q); |
insque(fp, &ipq); |
|
fp->ipq_ttl = IPFRAGTTL; |
fp->ipq_ttl = IPFRAGTTL; |
fp->ipq_p = ip->ip_p; |
fp->ipq_p = ipqe->ipqe_ip->ip_p; |
fp->ipq_id = ip->ip_id; |
fp->ipq_id = ipqe->ipqe_ip->ip_id; |
fp->ipq_next = fp->ipq_prev = (struct ipasfrag *)fp; |
LIST_INIT(&fp->ipq_fragq); |
fp->ipq_src = ((struct ip *)ip)->ip_src; |
fp->ipq_src = ipqe->ipqe_ip->ip_src; |
fp->ipq_dst = ((struct ip *)ip)->ip_dst; |
fp->ipq_dst = ipqe->ipqe_ip->ip_dst; |
q = (struct ipasfrag *)fp; |
p = NULL; |
goto insert; |
goto insert; |
} |
} |
|
|
/* |
/* |
* Find a segment which begins after this one does. |
* Find a segment which begins after this one does. |
*/ |
*/ |
for (q = fp->ipq_next; q != (struct ipasfrag *)fp; q = q->ipf_next) |
for (p = NULL, q = fp->ipq_fragq.lh_first; q != NULL; |
if (q->ip_off > ip->ip_off) |
p = q, q = q->ipqe_q.le_next) |
|
if (q->ipqe_ip->ip_off > ipqe->ipqe_ip->ip_off) |
break; |
break; |
|
|
/* |
/* |
Line 460 ip_reass(ip, fp) |
|
Line 523 ip_reass(ip, fp) |
|
* our data already. If so, drop the data from the incoming |
* our data already. If so, drop the data from the incoming |
* segment. If it provides all of our data, drop us. |
* segment. If it provides all of our data, drop us. |
*/ |
*/ |
if (q->ipf_prev != (struct ipasfrag *)fp) { |
if (p != NULL) { |
i = q->ipf_prev->ip_off + q->ipf_prev->ip_len - ip->ip_off; |
i = p->ipqe_ip->ip_off + p->ipqe_ip->ip_len - |
|
ipqe->ipqe_ip->ip_off; |
if (i > 0) { |
if (i > 0) { |
if (i >= ip->ip_len) |
if (i >= ipqe->ipqe_ip->ip_len) |
goto dropfrag; |
goto dropfrag; |
m_adj(dtom(ip), i); |
m_adj(ipqe->ipqe_m, i); |
ip->ip_off += i; |
ipqe->ipqe_ip->ip_off += i; |
ip->ip_len -= i; |
ipqe->ipqe_ip->ip_len -= i; |
} |
} |
} |
} |
|
|
Line 475 ip_reass(ip, fp) |
|
Line 539 ip_reass(ip, fp) |
|
* While we overlap succeeding segments trim them or, |
* While we overlap succeeding segments trim them or, |
* if they are completely covered, dequeue them. |
* if they are completely covered, dequeue them. |
*/ |
*/ |
while (q != (struct ipasfrag *)fp && ip->ip_off + ip->ip_len > q->ip_off) { |
for (; q != NULL && ipqe->ipqe_ip->ip_off + ipqe->ipqe_ip->ip_len > |
i = (ip->ip_off + ip->ip_len) - q->ip_off; |
q->ipqe_ip->ip_off; q = nq) { |
if (i < q->ip_len) { |
i = (ipqe->ipqe_ip->ip_off + ipqe->ipqe_ip->ip_len) - |
q->ip_len -= i; |
q->ipqe_ip->ip_off; |
q->ip_off += i; |
if (i < q->ipqe_ip->ip_len) { |
m_adj(dtom(q), i); |
q->ipqe_ip->ip_len -= i; |
|
q->ipqe_ip->ip_off += i; |
|
m_adj(q->ipqe_m, i); |
break; |
break; |
} |
} |
q = q->ipf_next; |
nq = q->ipqe_q.le_next; |
m_freem(dtom(q->ipf_prev)); |
m_freem(q->ipqe_m); |
ip_deq(q->ipf_prev); |
LIST_REMOVE(q, ipqe_q); |
|
FREE(q, M_IPQ); |
} |
} |
|
|
insert: |
insert: |
|
|
* Stick new segment in its place; |
* Stick new segment in its place; |
* check for complete reassembly. |
* check for complete reassembly. |
*/ |
*/ |
ip_enq(ip, q->ipf_prev); |
if (p == NULL) { |
|
LIST_INSERT_HEAD(&fp->ipq_fragq, ipqe, ipqe_q); |
|
} else { |
|
LIST_INSERT_AFTER(p, ipqe, ipqe_q); |
|
} |
next = 0; |
next = 0; |
for (q = fp->ipq_next; q != (struct ipasfrag *)fp; q = q->ipf_next) { |
for (p = NULL, q = fp->ipq_fragq.lh_first; q != NULL; |
if (q->ip_off != next) |
p = q, q = q->ipqe_q.le_next) { |
|
if (q->ipqe_ip->ip_off != next) |
return (0); |
return (0); |
next += q->ip_len; |
next += q->ipqe_ip->ip_len; |
} |
} |
if (q->ipf_prev->ipf_mff & 1) |
if (p->ipqe_mff) |
return (0); |
return (0); |
|
|
/* |
/* |
* Reassembly is complete; concatenate fragments. |
* Reassembly is complete. Check for a bogus message size and |
|
* concatenate fragments. |
*/ |
*/ |
q = fp->ipq_next; |
q = fp->ipq_fragq.lh_first; |
m = dtom(q); |
ip = q->ipqe_ip; |
|
if ((next + (ip->ip_hl << 2)) > IP_MAXPACKET) { |
|
ipstat.ips_toolong++; |
|
ip_freef(fp); |
|
return (0); |
|
} |
|
m = q->ipqe_m; |
t = m->m_next; |
t = m->m_next; |
m->m_next = 0; |
m->m_next = 0; |
m_cat(m, t); |
m_cat(m, t); |
q = q->ipf_next; |
nq = q->ipqe_q.le_next; |
while (q != (struct ipasfrag *)fp) { |
FREE(q, M_IPQ); |
t = dtom(q); |
for (q = nq; q != NULL; q = nq) { |
q = q->ipf_next; |
t = q->ipqe_m; |
|
nq = q->ipqe_q.le_next; |
|
FREE(q, M_IPQ); |
m_cat(m, t); |
m_cat(m, t); |
} |
} |
|
|
|
|
* dequeue and discard fragment reassembly header. |
* dequeue and discard fragment reassembly header. |
* Make header visible. |
* Make header visible. |
*/ |
*/ |
ip = fp->ipq_next; |
|
ip->ip_len = next; |
ip->ip_len = next; |
ip->ipf_mff &= ~1; |
ip->ip_src = fp->ipq_src; |
((struct ip *)ip)->ip_src = fp->ipq_src; |
ip->ip_dst = fp->ipq_dst; |
((struct ip *)ip)->ip_dst = fp->ipq_dst; |
LIST_REMOVE(fp, ipq_q); |
remque(fp); |
FREE(fp, M_FTABLE); |
(void) m_free(dtom(fp)); |
|
m = dtom(ip); |
|
m->m_len += (ip->ip_hl << 2); |
m->m_len += (ip->ip_hl << 2); |
m->m_data -= (ip->ip_hl << 2); |
m->m_data -= (ip->ip_hl << 2); |
/* some debugging cruft by sklower, below, will go away soon */ |
/* some debugging cruft by sklower, below, will go away soon */ |
if (m->m_flags & M_PKTHDR) { /* XXX this should be done elsewhere */ |
if (m->m_flags & M_PKTHDR) { /* XXX this should be done elsewhere */ |
register int plen = 0; |
register int plen = 0; |
for (t = m; m; m = m->m_next) |
for (t = m; t; t = t->m_next) |
plen += m->m_len; |
plen += t->m_len; |
t->m_pkthdr.len = plen; |
m->m_pkthdr.len = plen; |
} |
} |
return ((struct ip *)ip); |
return (m); |
|
|
dropfrag: |
dropfrag: |
ipstat.ips_fragdropped++; |
ipstat.ips_fragdropped++; |
m_freem(m); |
m_freem(m); |
|
FREE(ipqe, M_IPQ); |
return (0); |
return (0); |
} |
} |
|
|
|
|
ip_freef(fp) |
ip_freef(fp) |
struct ipq *fp; |
struct ipq *fp; |
{ |
{ |
register struct ipasfrag *q, *p; |
register struct ipqent *q, *p; |
|
|
for (q = fp->ipq_next; q != (struct ipasfrag *)fp; q = p) { |
for (q = fp->ipq_fragq.lh_first; q != NULL; q = p) { |
p = q->ipf_next; |
p = q->ipqe_q.le_next; |
ip_deq(q); |
m_freem(q->ipqe_m); |
m_freem(dtom(q)); |
LIST_REMOVE(q, ipqe_q); |
|
FREE(q, M_IPQ); |
} |
} |
remque(fp); |
LIST_REMOVE(fp, ipq_q); |
(void) m_free(dtom(fp)); |
FREE(fp, M_FTABLE); |
} |
|
|
|
/* |
|
* Put an ip fragment on a reassembly chain. |
|
* Like insque, but pointers in middle of structure. |
|
*/ |
|
void |
|
ip_enq(p, prev) |
|
register struct ipasfrag *p, *prev; |
|
{ |
|
|
|
p->ipf_prev = prev; |
|
p->ipf_next = prev->ipf_next; |
|
prev->ipf_next->ipf_prev = p; |
|
prev->ipf_next = p; |
|
} |
|
|
|
/* |
|
* To ip_enq as remque is to insque. |
|
*/ |
|
void |
|
ip_deq(p) |
|
register struct ipasfrag *p; |
|
{ |
|
|
|
p->ipf_prev->ipf_next = p->ipf_next; |
|
p->ipf_next->ipf_prev = p->ipf_prev; |
|
} |
} |
|
|
/* |
/* |
|
|
void |
void |
ip_slowtimo() |
ip_slowtimo() |
{ |
{ |
register struct ipq *fp; |
register struct ipq *fp, *nfp; |
int s = splnet(); |
int s = splsoftnet(); |
|
|
fp = ipq.next; |
for (fp = ipq.lh_first; fp != NULL; fp = nfp) { |
if (fp == 0) { |
nfp = fp->ipq_q.le_next; |
splx(s); |
if (--fp->ipq_ttl == 0) { |
return; |
|
} |
|
while (fp != &ipq) { |
|
--fp->ipq_ttl; |
|
fp = fp->next; |
|
if (fp->prev->ipq_ttl == 0) { |
|
ipstat.ips_fragtimeout++; |
ipstat.ips_fragtimeout++; |
ip_freef(fp->prev); |
ip_freef(fp); |
} |
} |
} |
} |
splx(s); |
splx(s); |
|
|
ip_drain() |
ip_drain() |
{ |
{ |
|
|
while (ipq.next != &ipq) { |
while (ipq.lh_first != NULL) { |
ipstat.ips_fragdropped++; |
ipstat.ips_fragdropped++; |
ip_freef(ipq.next); |
ip_freef(ipq.lh_first); |
} |
} |
} |
} |
|
|
|
|
*/ |
*/ |
case IPOPT_LSRR: |
case IPOPT_LSRR: |
case IPOPT_SSRR: |
case IPOPT_SSRR: |
|
if (ip_allowsrcrt == 0) { |
|
type = ICMP_UNREACH; |
|
code = ICMP_UNREACH_NET_PROHIB; |
|
goto bad; |
|
} |
if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) { |
if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) { |
code = &cp[IPOPT_OFFSET] - (u_char *)ip; |
code = &cp[IPOPT_OFFSET] - (u_char *)ip; |
goto bad; |
goto bad; |
} |
} |
ipaddr.sin_addr = ip->ip_dst; |
ipaddr.sin_addr = ip->ip_dst; |
ia = (struct in_ifaddr *) |
ia = ifatoia(ifa_ifwithaddr(sintosa(&ipaddr))); |
ifa_ifwithaddr((struct sockaddr *)&ipaddr); |
|
if (ia == 0) { |
if (ia == 0) { |
if (opt == IPOPT_SSRR) { |
if (opt == IPOPT_SSRR) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
|
|
if (opt == IPOPT_SSRR) { |
if (opt == IPOPT_SSRR) { |
#define INA struct in_ifaddr * |
#define INA struct in_ifaddr * |
#define SA struct sockaddr * |
#define SA struct sockaddr * |
if ((ia = (INA)ifa_ifwithdstaddr((SA)&ipaddr)) == 0) |
ia = (INA)ifa_ifwithladdr((SA)&ipaddr); |
ia = (INA)ifa_ifwithnet((SA)&ipaddr); |
|
} else |
} else |
ia = ip_rtaddr(ipaddr.sin_addr); |
ia = ip_rtaddr(ipaddr.sin_addr); |
if (ia == 0) { |
if (ia == 0) { |
|
|
goto bad; |
goto bad; |
} |
} |
ip->ip_dst = ipaddr.sin_addr; |
ip->ip_dst = ipaddr.sin_addr; |
bcopy((caddr_t)&(IA_SIN(ia)->sin_addr), |
bcopy((caddr_t)&ia->ia_addr.sin_addr, |
(caddr_t)(cp + off), sizeof(struct in_addr)); |
(caddr_t)(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 |
*/ |
*/ |
forward = !IN_MULTICAST(ntohl(ip->ip_dst.s_addr)); |
forward = !IN_MULTICAST(ip->ip_dst.s_addr); |
break; |
break; |
|
|
case IPOPT_RR: |
case IPOPT_RR: |
|
|
code = ICMP_UNREACH_HOST; |
code = ICMP_UNREACH_HOST; |
goto bad; |
goto bad; |
} |
} |
bcopy((caddr_t)&(IA_SIN(ia)->sin_addr), |
bcopy((caddr_t)&ia->ia_addr.sin_addr, |
(caddr_t)(cp + off), sizeof(struct in_addr)); |
(caddr_t)(cp + off), sizeof(struct in_addr)); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
cp[IPOPT_OFFSET] += sizeof(struct in_addr); |
break; |
break; |
|
|
m->m_pkthdr.rcvif); |
m->m_pkthdr.rcvif); |
if (ia == 0) |
if (ia == 0) |
continue; |
continue; |
bcopy((caddr_t)&IA_SIN(ia)->sin_addr, |
bcopy((caddr_t)&ia->ia_addr.sin_addr, |
(caddr_t)sin, sizeof(struct in_addr)); |
(caddr_t)sin, sizeof(struct in_addr)); |
ipt->ipt_ptr += sizeof(struct in_addr); |
ipt->ipt_ptr += sizeof(struct in_addr); |
break; |
break; |
|
|
} |
} |
} |
} |
if (forward) { |
if (forward) { |
|
if (ip_forwsrcrt == 0) { |
|
type = ICMP_UNREACH; |
|
code = ICMP_UNREACH_SRCFAIL; |
|
goto bad; |
|
} |
ip_forward(m, 1); |
ip_forward(m, 1); |
return (1); |
return (1); |
} |
} |
|
|
{ |
{ |
register struct sockaddr_in *sin; |
register struct sockaddr_in *sin; |
|
|
sin = (struct sockaddr_in *) &ipforward_rt.ro_dst; |
sin = satosin(&ipforward_rt.ro_dst); |
|
|
if (ipforward_rt.ro_rt == 0 || dst.s_addr != sin->sin_addr.s_addr) { |
if (ipforward_rt.ro_rt == 0 || !in_hosteq(dst, sin->sin_addr)) { |
if (ipforward_rt.ro_rt) { |
if (ipforward_rt.ro_rt) { |
RTFREE(ipforward_rt.ro_rt); |
RTFREE(ipforward_rt.ro_rt); |
ipforward_rt.ro_rt = 0; |
ipforward_rt.ro_rt = 0; |
|
|
} |
} |
if (ipforward_rt.ro_rt == 0) |
if (ipforward_rt.ro_rt == 0) |
return ((struct in_ifaddr *)0); |
return ((struct in_ifaddr *)0); |
return ((struct in_ifaddr *) ipforward_rt.ro_rt->rt_ifa); |
return (ifatoia(ipforward_rt.ro_rt->rt_ifa)); |
} |
} |
|
|
/* |
/* |
|
|
*(mtod(m, struct in_addr *)) = *p--; |
*(mtod(m, struct in_addr *)) = *p--; |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (ipprintfs) |
if (ipprintfs) |
printf(" hops %lx", ntohl(mtod(m, struct in_addr *)->s_addr)); |
printf(" hops %x", ntohl(mtod(m, struct in_addr *)->s_addr)); |
#endif |
#endif |
|
|
/* |
/* |
|
|
while (p >= ip_srcrt.route) { |
while (p >= ip_srcrt.route) { |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (ipprintfs) |
if (ipprintfs) |
printf(" %lx", ntohl(q->s_addr)); |
printf(" %x", ntohl(q->s_addr)); |
#endif |
#endif |
*q++ = *p--; |
*q++ = *p--; |
} |
} |
|
|
*q = ip_srcrt.dst; |
*q = ip_srcrt.dst; |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (ipprintfs) |
if (ipprintfs) |
printf(" %lx\n", ntohl(q->s_addr)); |
printf(" %x\n", ntohl(q->s_addr)); |
#endif |
#endif |
return (m); |
return (m); |
} |
} |
Line 977 ip_stripoptions(m, mopt) |
|
Line 1032 ip_stripoptions(m, mopt) |
|
ip->ip_hl = sizeof(struct ip) >> 2; |
ip->ip_hl = sizeof(struct ip) >> 2; |
} |
} |
|
|
u_char inetctlerrmap[PRC_NCMDS] = { |
int inetctlerrmap[PRC_NCMDS] = { |
0, 0, 0, 0, |
0, 0, 0, 0, |
0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH, |
0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH, |
EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED, |
EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED, |
Line 1008 ip_forward(m, srcrt) |
|
Line 1063 ip_forward(m, srcrt) |
|
register struct ip *ip = mtod(m, struct ip *); |
register struct ip *ip = mtod(m, struct ip *); |
register struct sockaddr_in *sin; |
register struct sockaddr_in *sin; |
register struct rtentry *rt; |
register struct rtentry *rt; |
int error, type = 0, code; |
int error, type = 0, code = 0; |
struct mbuf *mcopy; |
struct mbuf *mcopy; |
n_long dest; |
n_long dest; |
struct ifnet *destifp; |
struct ifnet *destifp; |
Line 1016 ip_forward(m, srcrt) |
|
Line 1071 ip_forward(m, srcrt) |
|
dest = 0; |
dest = 0; |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (ipprintfs) |
if (ipprintfs) |
printf("forward: src %x dst %x ttl %x\n", ip->ip_src, |
printf("forward: src %x dst %x ttl %x\n", |
ip->ip_dst, ip->ip_ttl); |
ip->ip_src.s_addr, ip->ip_dst.s_addr, ip->ip_ttl); |
#endif |
#endif |
if (m->m_flags & M_BCAST || in_canforward(ip->ip_dst) == 0) { |
if (m->m_flags & M_BCAST || in_canforward(ip->ip_dst) == 0) { |
ipstat.ips_cantforward++; |
ipstat.ips_cantforward++; |
Line 1031 ip_forward(m, srcrt) |
|
Line 1086 ip_forward(m, srcrt) |
|
} |
} |
ip->ip_ttl -= IPTTLDEC; |
ip->ip_ttl -= IPTTLDEC; |
|
|
sin = (struct sockaddr_in *)&ipforward_rt.ro_dst; |
sin = satosin(&ipforward_rt.ro_dst); |
if ((rt = ipforward_rt.ro_rt) == 0 || |
if ((rt = ipforward_rt.ro_rt) == 0 || |
ip->ip_dst.s_addr != sin->sin_addr.s_addr) { |
!in_hosteq(ip->ip_dst, sin->sin_addr)) { |
if (ipforward_rt.ro_rt) { |
if (ipforward_rt.ro_rt) { |
RTFREE(ipforward_rt.ro_rt); |
RTFREE(ipforward_rt.ro_rt); |
ipforward_rt.ro_rt = 0; |
ipforward_rt.ro_rt = 0; |
} |
} |
sin->sin_family = AF_INET; |
sin->sin_family = AF_INET; |
sin->sin_len = sizeof(*sin); |
sin->sin_len = sizeof(struct sockaddr_in); |
sin->sin_addr = ip->ip_dst; |
sin->sin_addr = ip->ip_dst; |
|
|
rtalloc(&ipforward_rt); |
rtalloc(&ipforward_rt); |
Line 1051 ip_forward(m, srcrt) |
|
Line 1106 ip_forward(m, srcrt) |
|
} |
} |
|
|
/* |
/* |
* Save at most 64 bytes of the packet in case |
* Save at most 68 bytes of the packet in case |
* we need to generate an ICMP message to the src. |
* we need to generate an ICMP message to the src. |
*/ |
*/ |
mcopy = m_copy(m, 0, imin((int)ip->ip_len, 64)); |
mcopy = m_copy(m, 0, imin((int)ip->ip_len, 68)); |
|
|
#ifdef GATEWAY |
|
ip_ifmatrix[rt->rt_ifp->if_index + |
|
if_index * m->m_pkthdr.rcvif->if_index]++; |
|
#endif |
|
/* |
/* |
* 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 1068 ip_forward(m, srcrt) |
|
Line 1119 ip_forward(m, srcrt) |
|
* Also, don't send redirect if forwarding using a default route |
* Also, don't send redirect if forwarding using a default route |
* or a route modified by a redirect. |
* or a route modified by a redirect. |
*/ |
*/ |
#define satosin(sa) ((struct sockaddr_in *)(sa)) |
|
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 && |
satosin(rt_key(rt))->sin_addr.s_addr != 0 && |
!in_nullhost(satosin(rt_key(rt))->sin_addr) && |
ipsendredirects && !srcrt) { |
ipsendredirects && !srcrt) { |
#define RTA(rt) ((struct in_ifaddr *)(rt->rt_ifa)) |
if (rt->rt_ifa && |
u_int32_t src = ntohl(ip->ip_src.s_addr); |
(ip->ip_src.s_addr & ifatoia(rt->rt_ifa)->ia_subnetmask) == |
|
ifatoia(rt->rt_ifa)->ia_subnet) { |
if (RTA(rt) && |
|
(src & RTA(rt)->ia_subnetmask) == RTA(rt)->ia_subnet) { |
|
if (rt->rt_flags & RTF_GATEWAY) |
if (rt->rt_flags & RTF_GATEWAY) |
dest = satosin(rt->rt_gateway)->sin_addr.s_addr; |
dest = satosin(rt->rt_gateway)->sin_addr.s_addr; |
else |
else |
Line 1087 ip_forward(m, srcrt) |
|
Line 1135 ip_forward(m, srcrt) |
|
code = ICMP_REDIRECT_HOST; |
code = ICMP_REDIRECT_HOST; |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (ipprintfs) |
if (ipprintfs) |
printf("redirect (%d) to %lx\n", code, (u_int32_t)dest); |
printf("redirect (%d) to %x\n", code, (u_int32_t)dest); |
#endif |
#endif |
} |
} |
} |
} |
|
|
error = ip_output(m, (struct mbuf *)0, &ipforward_rt, IP_FORWARDING |
error = ip_output(m, (struct mbuf *)0, &ipforward_rt, |
#ifdef DIRECTED_BROADCAST |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), 0); |
| IP_ALLOWBROADCAST |
|
#endif |
|
, 0); |
|
if (error) |
if (error) |
ipstat.ips_cantforward++; |
ipstat.ips_cantforward++; |
else { |
else { |
Line 1144 ip_forward(m, srcrt) |
|
Line 1189 ip_forward(m, srcrt) |
|
icmp_error(mcopy, type, code, dest, destifp); |
icmp_error(mcopy, type, code, dest, destifp); |
} |
} |
|
|
|
void |
|
ip_savecontrol(inp, mp, ip, m) |
|
register struct inpcb *inp; |
|
register struct mbuf **mp; |
|
register struct ip *ip; |
|
register struct mbuf *m; |
|
{ |
|
|
|
if (inp->inp_socket->so_options & SO_TIMESTAMP) { |
|
struct timeval tv; |
|
|
|
microtime(&tv); |
|
*mp = sbcreatecontrol((caddr_t) &tv, sizeof(tv), |
|
SCM_TIMESTAMP, SOL_SOCKET); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
if (inp->inp_flags & INP_RECVDSTADDR) { |
|
*mp = sbcreatecontrol((caddr_t) &ip->ip_dst, |
|
sizeof(struct in_addr), IP_RECVDSTADDR, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
#ifdef notyet |
|
/* |
|
* XXX |
|
* Moving these out of udp_input() made them even more broken |
|
* than they already were. |
|
* - fenner@parc.xerox.com |
|
*/ |
|
/* options were tossed already */ |
|
if (inp->inp_flags & INP_RECVOPTS) { |
|
*mp = sbcreatecontrol((caddr_t) opts_deleted_above, |
|
sizeof(struct in_addr), IP_RECVOPTS, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
/* ip_srcroute doesn't do what we want here, need to fix */ |
|
if (inp->inp_flags & INP_RECVRETOPTS) { |
|
*mp = sbcreatecontrol((caddr_t) ip_srcroute(), |
|
sizeof(struct in_addr), IP_RECVRETOPTS, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
#endif |
|
if (inp->inp_flags & INP_RECVIF) { |
|
struct sockaddr_dl sdl; |
|
|
|
sdl.sdl_len = offsetof(struct sockaddr_dl, sdl_data[0]); |
|
sdl.sdl_family = AF_LINK; |
|
sdl.sdl_index = m->m_pkthdr.rcvif ? |
|
m->m_pkthdr.rcvif->if_index : 0; |
|
sdl.sdl_nlen = sdl.sdl_alen = sdl.sdl_slen = 0; |
|
*mp = sbcreatecontrol((caddr_t) &sdl, sdl.sdl_len, |
|
IP_RECVIF, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
} |
|
|
int |
int |
ip_sysctl(name, namelen, oldp, oldlenp, newp, newlen) |
ip_sysctl(name, namelen, oldp, oldlenp, newp, newlen) |
int *name; |
int *name; |
Line 1153 ip_sysctl(name, namelen, oldp, oldlenp, |
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Line 1258 ip_sysctl(name, namelen, oldp, oldlenp, |
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void *newp; |
void *newp; |
size_t newlen; |
size_t newlen; |
{ |
{ |
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extern int subnetsarelocal; |
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int error; |
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/* All sysctl names at this level are terminal. */ |
/* All sysctl names at this level are terminal. */ |
if (namelen != 1) |
if (namelen != 1) |
return (ENOTDIR); |
return (ENOTDIR); |
Line 1169 ip_sysctl(name, namelen, oldp, oldlenp, |
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Line 1277 ip_sysctl(name, namelen, oldp, oldlenp, |
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case IPCTL_DEFMTU: |
case IPCTL_DEFMTU: |
return (sysctl_int(oldp, oldlenp, newp, newlen, &ip_mtu)); |
return (sysctl_int(oldp, oldlenp, newp, newlen, &ip_mtu)); |
#endif |
#endif |
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case IPCTL_FORWSRCRT: |
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/* Don't allow this to change in a secure environment. */ |
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if (securelevel > 0) |
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return (sysctl_rdint(oldp, oldlenp, newp, |
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ip_forwsrcrt)); |
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else |
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return (sysctl_int(oldp, oldlenp, newp, newlen, |
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&ip_forwsrcrt)); |
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case IPCTL_DIRECTEDBCAST: |
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return (sysctl_int(oldp, oldlenp, newp, newlen, |
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&ip_directedbcast)); |
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case IPCTL_ALLOWSRCRT: |
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return (sysctl_int(oldp, oldlenp, newp, newlen, |
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&ip_allowsrcrt)); |
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case IPCTL_SUBNETSARELOCAL: |
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return (sysctl_int(oldp, oldlenp, newp, newlen, |
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&subnetsarelocal)); |
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case IPCTL_MTUDISC: |
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error = sysctl_int(oldp, oldlenp, newp, newlen, |
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&ip_mtudisc); |
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if (ip_mtudisc != 0 && ip_mtudisc_timeout_q == NULL) { |
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ip_mtudisc_timeout_q = |
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rt_timer_queue_create(ip_mtudisc_timeout); |
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} else if (ip_mtudisc == 0 && ip_mtudisc_timeout_q != NULL) { |
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rt_timer_queue_destroy(ip_mtudisc_timeout_q, TRUE); |
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ip_mtudisc_timeout_q = NULL; |
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} |
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return error; |
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case IPCTL_MTUDISCTIMEOUT: |
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error = sysctl_int(oldp, oldlenp, newp, newlen, |
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&ip_mtudisc_timeout); |
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if (ip_mtudisc_timeout_q != NULL) |
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rt_timer_queue_change(ip_mtudisc_timeout_q, |
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ip_mtudisc_timeout); |
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return (error); |
default: |
default: |
return (EOPNOTSUPP); |
return (EOPNOTSUPP); |
} |
} |