version 1.347.2.1, 2017/04/21 16:54:06 |
version 1.349, 2017/02/07 02:38:08 |
Line 253 EVCNT_ATTACH_STATIC(ip_swcsum); |
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Line 253 EVCNT_ATTACH_STATIC(ip_swcsum); |
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#endif /* INET_CSUM_COUNTERS */ |
#endif /* INET_CSUM_COUNTERS */ |
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/* |
/* |
* Used to save the IP options in case a protocol wants to respond |
* We need to save the IP options in case a protocol wants to respond |
* to an incoming packet over the same route if the packet got here |
* to an incoming packet over the same route if the packet got here |
* using IP source routing. This allows connection establishment and |
* using IP source routing. This allows connection establishment and |
* maintenance when the remote end is on a network that is not known |
* maintenance when the remote end is on a network that is not known |
* to us. |
* to us. |
*/ |
*/ |
struct ip_srcrt { |
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int isr_nhops; /* number of hops */ |
static int ip_nhops = 0; |
struct in_addr isr_dst; /* final destination */ |
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char isr_nop; /* one NOP to align */ |
static struct ip_srcrt { |
char isr_hdr[IPOPT_OFFSET + 1]; /* OPTVAL, OLEN & OFFSET */ |
struct in_addr dst; /* final destination */ |
struct in_addr isr_routes[MAX_IPOPTLEN/sizeof(struct in_addr)]; |
char nop; /* one NOP to align */ |
}; |
char srcopt[IPOPT_OFFSET + 1]; /* OPTVAL, OLEN and OFFSET */ |
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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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static void save_rte(struct mbuf *, u_char *, struct in_addr); |
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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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"); |
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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) |
if (ipforward_rt_percpu == NULL) |
panic("failed to allocate ipforward_rt_percpu"); |
panic("failed to allocate ipforward_rt_percpu"); |
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ip_mtudisc_timeout_q = rt_timer_queue_create(ip_mtudisc_timeout); |
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} |
} |
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static struct in_ifaddr * |
static struct in_ifaddr * |
Line 662 ip_input(struct mbuf *m) |
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Line 667 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). |
*/ |
*/ |
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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; |
m = NULL; |
goto out; |
goto out; |
Line 942 ip_dooptions(struct mbuf *m) |
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Line 948 ip_dooptions(struct mbuf *m) |
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case IPOPT_LSRR: |
case IPOPT_LSRR: |
case IPOPT_SSRR: { |
case IPOPT_SSRR: { |
struct psref psref; |
struct psref psref; |
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 984 ip_dooptions(struct mbuf *m) |
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Line 985 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(m, cp, ip->ip_src); |
save_rte(cp, ip->ip_src); |
break; |
break; |
} |
} |
/* |
/* |
Line 1021 ip_dooptions(struct mbuf *m) |
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Line 1022 ip_dooptions(struct mbuf *m) |
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case IPOPT_RR: { |
case IPOPT_RR: { |
struct psref psref; |
struct psref psref; |
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 (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 1092 ip_dooptions(struct mbuf *m) |
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Line 1088 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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}; |
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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 1123 ip_dooptions(struct mbuf *m) |
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Line 1115 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), |
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.sin_family = AF_INET, |
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}; |
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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 1146 ip_dooptions(struct mbuf *m) |
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Line 1133 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; |
} |
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default: |
default: |
/* XXX can't take &ipt->ipt_flg */ |
/* XXX can't take &ipt->ipt_flg */ |
Line 1223 ip_rtaddr(struct in_addr dst, struct psr |
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Line 1209 ip_rtaddr(struct in_addr dst, struct psr |
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* 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(struct mbuf *m, u_char *option, struct in_addr dst) |
save_rte(u_char *option, struct in_addr dst) |
{ |
{ |
struct ip_srcrt *isr; |
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struct m_tag *mtag; |
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unsigned olen; |
unsigned olen; |
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olen = option[IPOPT_OLEN]; |
olen = option[IPOPT_OLEN]; |
if (olen > sizeof(isr->isr_hdr) + sizeof(isr->isr_routes)) |
if (olen > sizeof(ip_srcrt) - (1 + sizeof(dst))) |
return; |
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mtag = m_tag_get(PACKET_TAG_SRCROUTE, sizeof(*isr), M_NOWAIT); |
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if (mtag == NULL) |
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return; |
return; |
isr = (struct ip_srcrt *)(mtag + 1); |
memcpy((void *)ip_srcrt.srcopt, (void *)option, olen); |
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ip_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr); |
memcpy(isr->isr_hdr, option, olen); |
ip_srcrt.dst = dst; |
isr->isr_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr); |
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isr->isr_dst = dst; |
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m_tag_prepend(m, mtag); |
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} |
} |
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/* |
/* |
Line 1250 save_rte(struct mbuf *m, u_char *option, |
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Line 1227 save_rte(struct mbuf *m, u_char *option, |
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* 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(struct mbuf *m0) |
ip_srcroute(void) |
{ |
{ |
struct in_addr *p, *q; |
struct in_addr *p, *q; |
struct mbuf *m; |
struct mbuf *m; |
struct ip_srcrt *isr; |
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struct m_tag *mtag; |
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mtag = m_tag_find(m0, PACKET_TAG_SRCROUTE, NULL); |
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if (mtag == NULL) |
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return NULL; |
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isr = (struct ip_srcrt *)(mtag + 1); |
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if (isr->isr_nhops == 0) |
if (ip_nhops == 0) |
return NULL; |
return NULL; |
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m = m_get(M_DONTWAIT, MT_SOOPTS); |
m = m_get(M_DONTWAIT, MT_SOOPTS); |
if (m == NULL) |
if (m == 0) |
return NULL; |
return NULL; |
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MCLAIM(m, &inetdomain.dom_mowner); |
MCLAIM(m, &inetdomain.dom_mowner); |
#define OPTSIZ (sizeof(isr->isr_nop) + sizeof(isr->isr_hdr)) |
#define OPTSIZ (sizeof(ip_srcrt.nop) + sizeof(ip_srcrt.srcopt)) |
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/* length is (nhops+1)*sizeof(addr) + sizeof(nop + header) */ |
/* length is (nhops+1)*sizeof(addr) + sizeof(nop + srcrt header) */ |
m->m_len = (isr->isr_nhops + 1) * sizeof(struct in_addr) + OPTSIZ; |
m->m_len = ip_nhops * sizeof(struct in_addr) + sizeof(struct in_addr) + |
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OPTSIZ; |
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/* |
/* |
* First save first hop for return route |
* First save first hop for return route |
*/ |
*/ |
p = &(isr->isr_routes[isr->isr_nhops - 1]); |
p = &ip_srcrt.route[ip_nhops - 1]; |
*(mtod(m, struct in_addr *)) = *p--; |
*(mtod(m, struct in_addr *)) = *p--; |
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/* |
/* |
* Copy option fields and padding (nop) to mbuf. |
* Copy option fields and padding (nop) to mbuf. |
*/ |
*/ |
isr->isr_nop = IPOPT_NOP; |
ip_srcrt.nop = IPOPT_NOP; |
isr->isr_hdr[IPOPT_OFFSET] = IPOPT_MINOFF; |
ip_srcrt.srcopt[IPOPT_OFFSET] = IPOPT_MINOFF; |
memmove(mtod(m, char *) + sizeof(struct in_addr), &isr->isr_nop, |
memmove(mtod(m, char *) + sizeof(struct in_addr), &ip_srcrt.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 1295 ip_srcroute(struct mbuf *m0) |
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Line 1265 ip_srcroute(struct mbuf *m0) |
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* 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 >= isr->isr_routes) { |
while (p >= ip_srcrt.route) { |
*q++ = *p--; |
*q++ = *p--; |
} |
} |
/* |
/* |
* Last hop goes to final destination. |
* Last hop goes to final destination. |
*/ |
*/ |
*q = isr->isr_dst; |
*q = ip_srcrt.dst; |
m_tag_delete(m0, mtag); |
return (m); |
return m; |
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} |
} |
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const int inetctlerrmap[PRC_NCMDS] = { |
const int inetctlerrmap[PRC_NCMDS] = { |
Line 1632 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
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Line 1601 sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS |
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int error, tmp; |
int error, tmp; |
struct sysctlnode node; |
struct sysctlnode node; |
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icmp_mtudisc_lock(); |
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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) |
goto out; |
return (error); |
if (tmp < 0) { |
if (tmp < 0) |
error = EINVAL; |
return (EINVAL); |
goto out; |
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} |
/* XXX NOMPSAFE still need softnet_lock */ |
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mutex_enter(softnet_lock); |
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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; |
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out: |
mutex_exit(softnet_lock); |
icmp_mtudisc_unlock(); |
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return error; |
return (0); |
} |
} |
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static int |
static int |