version 1.328, 2016/01/21 15:41:30 |
version 1.331, 2016/06/30 06:48:58 |
Line 284 struct mowner ip_tx_mowner = MOWNER_INIT |
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Line 284 struct mowner ip_tx_mowner = MOWNER_INIT |
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static void ipintr(void *); |
static void ipintr(void *); |
static void ip_input(struct mbuf *); |
static void ip_input(struct mbuf *); |
static void ip_forward(struct mbuf *, int); |
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); |
static void sysctl_net_inet_ip_setup(struct sysctllog **); |
static void sysctl_net_inet_ip_setup(struct sysctllog **); |
Line 374 ip_input(struct mbuf *m) |
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Line 374 ip_input(struct mbuf *m) |
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int checkif; |
int checkif; |
int srcrt = 0; |
int srcrt = 0; |
ifnet_t *ifp; |
ifnet_t *ifp; |
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struct psref psref; |
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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"); |
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MCLAIM(m, &ip_rx_mowner); |
MCLAIM(m, &ip_rx_mowner); |
KASSERT((m->m_flags & M_PKTHDR) != 0); |
KASSERT((m->m_flags & M_PKTHDR) != 0); |
ifp = m->m_pkthdr.rcvif; |
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ifp = m_get_rcvif_psref(m, &psref); |
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if (__predict_false(ifp == NULL)) |
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goto bad; |
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/* |
/* |
* If no IP addresses have been set yet but the interfaces |
* If no IP addresses have been set yet but the interfaces |
Line 403 ip_input(struct mbuf *m) |
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Line 407 ip_input(struct mbuf *m) |
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(max_linkhdr + 3) & ~3)) == NULL) { |
(max_linkhdr + 3) & ~3)) == NULL) { |
/* XXXJRT new stat, please */ |
/* XXXJRT new stat, please */ |
IP_STATINC(IP_STAT_TOOSMALL); |
IP_STATINC(IP_STAT_TOOSMALL); |
return; |
goto out; |
} |
} |
} else if (__predict_false(m->m_len < sizeof (struct ip))) { |
} else if (__predict_false(m->m_len < sizeof (struct ip))) { |
if ((m = m_pullup(m, sizeof (struct ip))) == NULL) { |
if ((m = m_pullup(m, sizeof (struct ip))) == NULL) { |
IP_STATINC(IP_STAT_TOOSMALL); |
IP_STATINC(IP_STAT_TOOSMALL); |
return; |
goto out; |
} |
} |
} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
Line 424 ip_input(struct mbuf *m) |
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Line 428 ip_input(struct mbuf *m) |
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if (hlen > m->m_len) { |
if (hlen > m->m_len) { |
if ((m = m_pullup(m, hlen)) == NULL) { |
if ((m = m_pullup(m, hlen)) == NULL) { |
IP_STATINC(IP_STAT_BADHLEN); |
IP_STATINC(IP_STAT_BADHLEN); |
return; |
goto out; |
} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
} |
} |
Line 528 ip_input(struct mbuf *m) |
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Line 532 ip_input(struct mbuf *m) |
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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(); |
SOFTNET_UNLOCK(); |
if (freed || m == NULL) { |
if (freed || m == NULL) { |
return; |
goto out; |
} |
} |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
hlen = ip->ip_hl << 2; |
hlen = ip->ip_hl << 2; |
Line 557 ip_input(struct mbuf *m) |
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Line 561 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(); |
return; |
goto out; |
} |
} |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
} |
} |
Line 571 ip_input(struct mbuf *m) |
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Line 575 ip_input(struct mbuf *m) |
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*/ |
*/ |
ip_nhops = 0; /* for source routed packets */ |
ip_nhops = 0; /* for source routed packets */ |
if (hlen > sizeof (struct ip) && ip_dooptions(m)) |
if (hlen > sizeof (struct ip) && ip_dooptions(m)) |
return; |
goto out; |
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/* |
/* |
* Enable a consistency check between the destination address |
* Enable a consistency check between the destination address |
Line 659 ip_input(struct mbuf *m) |
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Line 663 ip_input(struct mbuf *m) |
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if (ip_mforward(m, ifp) != 0) { |
if (ip_mforward(m, ifp) != 0) { |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
goto bad; |
return; |
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} |
} |
SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
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Line 681 ip_input(struct mbuf *m) |
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Line 684 ip_input(struct mbuf *m) |
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*/ |
*/ |
if (!in_multi_group(ip->ip_dst, ifp, 0)) { |
if (!in_multi_group(ip->ip_dst, ifp, 0)) { |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
goto bad; |
return; |
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} |
} |
goto ours; |
goto ours; |
} |
} |
Line 694 ip_input(struct mbuf *m) |
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Line 696 ip_input(struct mbuf *m) |
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* Not for us; forward if possible and desirable. |
* Not for us; forward if possible and desirable. |
*/ |
*/ |
if (ipforwarding == 0) { |
if (ipforwarding == 0) { |
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m_put_rcvif_psref(ifp, &psref); |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
m_freem(m); |
m_freem(m); |
} else { |
} else { |
Line 704 ip_input(struct mbuf *m) |
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Line 707 ip_input(struct mbuf *m) |
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* forwarding loop till TTL goes to 0. |
* forwarding loop till TTL goes to 0. |
*/ |
*/ |
if (downmatch) { |
if (downmatch) { |
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m_put_rcvif_psref(ifp, &psref); |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_HOST, 0, 0); |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_HOST, 0, 0); |
IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
return; |
return; |
Line 720 ip_input(struct mbuf *m) |
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Line 724 ip_input(struct mbuf *m) |
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SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
} |
} |
#endif |
#endif |
ip_forward(m, srcrt); |
ip_forward(m, srcrt, ifp); |
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m_put_rcvif_psref(ifp, &psref); |
} |
} |
return; |
return; |
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ours: |
ours: |
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m_put_rcvif_psref(ifp, &psref); |
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ifp = NULL; |
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/* |
/* |
* If offset or IP_MF are set, must reassemble. |
* If offset or IP_MF are set, must reassemble. |
*/ |
*/ |
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SOFTNET_UNLOCK(); |
SOFTNET_UNLOCK(); |
return; |
return; |
bad: |
bad: |
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m_put_rcvif_psref(ifp, &psref); |
m_freem(m); |
m_freem(m); |
return; |
return; |
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badcsum: |
badcsum: |
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m_put_rcvif_psref(ifp, &psref); |
IP_STATINC(IP_STAT_BADSUM); |
IP_STATINC(IP_STAT_BADSUM); |
m_freem(m); |
m_freem(m); |
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return; |
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out: |
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m_put_rcvif_psref(ifp, &psref); |
} |
} |
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/* |
/* |
Line 988 ip_dooptions(struct mbuf *m) |
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Line 1001 ip_dooptions(struct mbuf *m) |
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case IPOPT_TS_TSONLY: |
case IPOPT_TS_TSONLY: |
break; |
break; |
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case IPOPT_TS_TSANDADDR: |
case IPOPT_TS_TSANDADDR: { |
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struct ifnet *rcvif; |
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int s; |
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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 996 ip_dooptions(struct mbuf *m) |
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Line 1012 ip_dooptions(struct mbuf *m) |
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goto bad; |
goto bad; |
} |
} |
ipaddr.sin_addr = dst; |
ipaddr.sin_addr = dst; |
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rcvif = m_get_rcvif(m, &s); |
ia = ifatoia(ifaof_ifpforaddr(sintosa(&ipaddr), |
ia = ifatoia(ifaof_ifpforaddr(sintosa(&ipaddr), |
m->m_pkthdr.rcvif)); |
rcvif)); |
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m_put_rcvif(rcvif, &s); |
if (ia == 0) |
if (ia == 0) |
continue; |
continue; |
bcopy(&ia->ia_addr.sin_addr, |
bcopy(&ia->ia_addr.sin_addr, |
cp0, sizeof(struct in_addr)); |
cp0, sizeof(struct in_addr)); |
ipt->ipt_ptr += sizeof(struct in_addr); |
ipt->ipt_ptr += sizeof(struct in_addr); |
break; |
break; |
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} |
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case IPOPT_TS_PRESPEC: |
case IPOPT_TS_PRESPEC: |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
if (ipt->ipt_ptr - 1 + sizeof(n_time) + |
Line 1034 ip_dooptions(struct mbuf *m) |
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Line 1053 ip_dooptions(struct mbuf *m) |
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} |
} |
} |
} |
if (forward) { |
if (forward) { |
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struct ifnet *rcvif; |
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struct psref psref; |
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if (ip_forwsrcrt == 0) { |
if (ip_forwsrcrt == 0) { |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_SRCFAIL; |
code = ICMP_UNREACH_SRCFAIL; |
goto bad; |
goto bad; |
} |
} |
ip_forward(m, 1); |
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rcvif = m_get_rcvif_psref(m, &psref); |
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if (__predict_false(rcvif == NULL)) { |
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type = ICMP_UNREACH; |
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code = ICMP_UNREACH_HOST; |
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goto bad; |
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} |
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ip_forward(m, 1, rcvif); |
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m_put_rcvif_psref(rcvif, &psref); |
return true; |
return true; |
} |
} |
return false; |
return false; |
Line 1186 ip_drainstub(void) |
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Line 1216 ip_drainstub(void) |
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* via a source route. |
* via a source route. |
*/ |
*/ |
static void |
static void |
ip_forward(struct mbuf *m, int srcrt) |
ip_forward(struct mbuf *m, int srcrt, struct ifnet *rcvif) |
{ |
{ |
struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
struct rtentry *rt; |
struct rtentry *rt; |
Line 1254 ip_forward(struct mbuf *m, int srcrt) |
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Line 1284 ip_forward(struct mbuf *m, int srcrt) |
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* Also, don't send redirect if forwarding using a default route |
* Also, don't send redirect if forwarding using a default route |
* or a route modified by a redirect. |
* or a route modified by a redirect. |
*/ |
*/ |
if (rt->rt_ifp == m->m_pkthdr.rcvif && |
if (rt->rt_ifp == rcvif && |
(rt->rt_flags & (RTF_DYNAMIC|RTF_MODIFIED)) == 0 && |
(rt->rt_flags & (RTF_DYNAMIC|RTF_MODIFIED)) == 0 && |
!in_nullhost(satocsin(rt_getkey(rt))->sin_addr) && |
!in_nullhost(satocsin(rt_getkey(rt))->sin_addr) && |
ipsendredirects && !srcrt) { |
ipsendredirects && !srcrt) { |
Line 1360 ip_savecontrol(struct inpcb *inp, struct |
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Line 1390 ip_savecontrol(struct inpcb *inp, struct |
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struct mbuf *m) |
struct mbuf *m) |
{ |
{ |
struct socket *so = inp->inp_socket; |
struct socket *so = inp->inp_socket; |
ifnet_t *ifp = m->m_pkthdr.rcvif; |
ifnet_t *ifp; |
int inpflags = inp->inp_flags; |
int inpflags = inp->inp_flags; |
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struct psref psref; |
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ifp = m_get_rcvif_psref(m, &psref); |
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if (__predict_false(ifp == NULL)) |
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return; /* XXX should report error? */ |
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if (so->so_options & SO_TIMESTAMP |
if (so->so_options & SO_TIMESTAMP |
#ifdef SO_OTIMESTAMP |
#ifdef SO_OTIMESTAMP |
Line 1423 ip_savecontrol(struct inpcb *inp, struct |
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Line 1458 ip_savecontrol(struct inpcb *inp, struct |
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if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
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m_put_rcvif_psref(ifp, &psref); |
} |
} |
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/* |
/* |