| version 1.103.2.11, 2005/12/11 10:29:25 |
version 1.104, 2003/08/07 16:33:20 |
| Line 95 __KERNEL_RCSID(0, "$NetBSD$"); |
|
| Line 95 __KERNEL_RCSID(0, "$NetBSD$"); |
|
| #include <netinet/udp.h> |
#include <netinet/udp.h> |
| #include <netinet/udp_var.h> |
#include <netinet/udp_var.h> |
| |
|
| #ifdef IPSEC_NAT_T |
|
| #include <netinet6/ipsec.h> |
|
| #include <netinet6/esp.h> |
|
| #endif |
|
| |
|
| #ifdef INET6 |
#ifdef INET6 |
| #include <netinet/ip6.h> |
#include <netinet/ip6.h> |
| #include <netinet/icmp6.h> |
#include <netinet/icmp6.h> |
| Line 120 __KERNEL_RCSID(0, "$NetBSD$"); |
|
| Line 115 __KERNEL_RCSID(0, "$NetBSD$"); |
|
| |
|
| #include <machine/stdarg.h> |
#include <machine/stdarg.h> |
| |
|
| #ifdef FAST_IPSEC |
|
| #include <netipsec/ipsec.h> |
|
| #include <netipsec/ipsec_var.h> /* XXX ipsecstat namespace */ |
|
| #ifdef INET6 |
|
| #include <netipsec/ipsec6.h> |
|
| #endif |
|
| #endif /* FAST_IPSEC*/ |
|
| |
|
| #ifdef IPSEC |
#ifdef IPSEC |
| #include <netinet6/ipsec.h> |
#include <netinet6/ipsec.h> |
| #include <netkey/key.h> |
#include <netkey/key.h> |
| Line 146 int udpcksum = 1; |
|
| Line 133 int udpcksum = 1; |
|
| #else |
#else |
| int udpcksum = 0; /* XXX */ |
int udpcksum = 0; /* XXX */ |
| #endif |
#endif |
| int udp_do_loopback_cksum = 0; |
|
| |
|
| struct inpcbtable udbtable; |
struct inpcbtable udbtable; |
| struct udpstat udpstat; |
struct udpstat udpstat; |
| |
|
| #ifdef INET |
#ifdef INET |
| #ifdef IPSEC_NAT_T |
static void udp4_sendup __P((struct mbuf *, int, struct sockaddr *, |
| static int udp4_espinudp (struct mbuf **, int, struct sockaddr *, |
struct socket *)); |
| struct socket *); |
static int udp4_realinput __P((struct sockaddr_in *, struct sockaddr_in *, |
| #endif |
struct mbuf *, int)); |
| static void udp4_sendup (struct mbuf *, int, struct sockaddr *, |
|
| struct socket *); |
|
| static int udp4_realinput (struct sockaddr_in *, struct sockaddr_in *, |
|
| struct mbuf **, int); |
|
| static int udp4_input_checksum(struct mbuf *, const struct udphdr *, int, int); |
|
| #endif |
#endif |
| #ifdef INET6 |
#ifdef INET6 |
| static void udp6_sendup (struct mbuf *, int, struct sockaddr *, |
static void udp6_sendup __P((struct mbuf *, int, struct sockaddr *, |
| struct socket *); |
struct socket *)); |
| static int udp6_realinput (int, struct sockaddr_in6 *, |
static int udp6_realinput __P((int, struct sockaddr_in6 *, |
| struct sockaddr_in6 *, struct mbuf *, int); |
struct sockaddr_in6 *, struct mbuf *, int)); |
| static int udp6_input_checksum(struct mbuf *, const struct udphdr *, int, int); |
|
| #endif |
#endif |
| #ifdef INET |
#ifdef INET |
| static void udp_notify (struct inpcb *, int); |
static void udp_notify __P((struct inpcb *, int)); |
| #endif |
#endif |
| |
|
| #ifndef UDBHASHSIZE |
#ifndef UDBHASHSIZE |
| Line 187 struct mowner udp_tx_mowner = { "udp", " |
|
| Line 167 struct mowner udp_tx_mowner = { "udp", " |
|
| #ifdef UDP_CSUM_COUNTERS |
#ifdef UDP_CSUM_COUNTERS |
| #include <sys/device.h> |
#include <sys/device.h> |
| |
|
| #if defined(INET) |
|
| struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
| NULL, "udp", "hwcsum bad"); |
NULL, "udp", "hwcsum bad"); |
| struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
| Line 197 struct evcnt udp_hwcsum_data = EVCNT_INI |
|
| Line 176 struct evcnt udp_hwcsum_data = EVCNT_INI |
|
| struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
| NULL, "udp", "swcsum"); |
NULL, "udp", "swcsum"); |
| |
|
| EVCNT_ATTACH_STATIC(udp_hwcsum_bad); |
|
| EVCNT_ATTACH_STATIC(udp_hwcsum_ok); |
|
| EVCNT_ATTACH_STATIC(udp_hwcsum_data); |
|
| EVCNT_ATTACH_STATIC(udp_swcsum); |
|
| #endif /* defined(INET) */ |
|
| |
|
| #if defined(INET6) |
|
| struct evcnt udp6_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
|
| NULL, "udp6", "hwcsum bad"); |
|
| struct evcnt udp6_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
|
| NULL, "udp6", "hwcsum ok"); |
|
| struct evcnt udp6_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
|
| NULL, "udp6", "hwcsum data"); |
|
| struct evcnt udp6_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC, |
|
| NULL, "udp6", "swcsum"); |
|
| |
|
| EVCNT_ATTACH_STATIC(udp6_hwcsum_bad); |
|
| EVCNT_ATTACH_STATIC(udp6_hwcsum_ok); |
|
| EVCNT_ATTACH_STATIC(udp6_hwcsum_data); |
|
| EVCNT_ATTACH_STATIC(udp6_swcsum); |
|
| #endif /* defined(INET6) */ |
|
| |
|
| #define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ |
#define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++ |
| |
|
| #else |
#else |
| Line 228 EVCNT_ATTACH_STATIC(udp6_swcsum); |
|
| Line 185 EVCNT_ATTACH_STATIC(udp6_swcsum); |
|
| #endif /* UDP_CSUM_COUNTERS */ |
#endif /* UDP_CSUM_COUNTERS */ |
| |
|
| void |
void |
| udp_init(void) |
udp_init() |
| { |
{ |
| |
|
| |
#ifdef INET |
| in_pcbinit(&udbtable, udbhashsize, udbhashsize); |
in_pcbinit(&udbtable, udbhashsize, udbhashsize); |
| |
#endif |
| |
|
| |
#ifdef UDP_CSUM_COUNTERS |
| |
evcnt_attach_static(&udp_hwcsum_bad); |
| |
evcnt_attach_static(&udp_hwcsum_ok); |
| |
evcnt_attach_static(&udp_hwcsum_data); |
| |
evcnt_attach_static(&udp_swcsum); |
| |
#endif /* UDP_CSUM_COUNTERS */ |
| |
|
| MOWNER_ATTACH(&udp_tx_mowner); |
MOWNER_ATTACH(&udp_tx_mowner); |
| MOWNER_ATTACH(&udp_rx_mowner); |
MOWNER_ATTACH(&udp_rx_mowner); |
| MOWNER_ATTACH(&udp_mowner); |
MOWNER_ATTACH(&udp_mowner); |
| } |
} |
| |
|
| /* |
|
| * Checksum extended UDP header and data. |
|
| */ |
|
| |
|
| int |
|
| udp_input_checksum(int af, struct mbuf *m, const struct udphdr *uh, |
|
| int iphlen, int len) |
|
| { |
|
| |
|
| switch (af) { |
|
| #ifdef INET |
|
| case AF_INET: |
|
| return udp4_input_checksum(m, uh, iphlen, len); |
|
| #endif |
|
| #ifdef INET6 |
|
| case AF_INET6: |
|
| return udp6_input_checksum(m, uh, iphlen, len); |
|
| #endif |
|
| } |
|
| #ifdef DIAGNOSTIC |
|
| panic("udp_input_checksum: unknown af %d", af); |
|
| #endif |
|
| /* NOTREACHED */ |
|
| return -1; |
|
| } |
|
| |
|
| #ifdef INET |
#ifdef INET |
| |
|
| /* |
|
| * Checksum extended UDP header and data. |
|
| */ |
|
| |
|
| static int |
|
| udp4_input_checksum(struct mbuf *m, const struct udphdr *uh, |
|
| int iphlen, int len) |
|
| { |
|
| |
|
| /* |
|
| * XXX it's better to record and check if this mbuf is |
|
| * already checked. |
|
| */ |
|
| |
|
| if (uh->uh_sum == 0) |
|
| return 0; |
|
| |
|
| switch (m->m_pkthdr.csum_flags & |
|
| ((m->m_pkthdr.rcvif->if_csum_flags_rx & M_CSUM_UDPv4) | |
|
| M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { |
|
| case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD: |
|
| UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad); |
|
| goto badcsum; |
|
| |
|
| case M_CSUM_UDPv4|M_CSUM_DATA: { |
|
| u_int32_t hw_csum = m->m_pkthdr.csum_data; |
|
| |
|
| UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data); |
|
| if (m->m_pkthdr.csum_flags & M_CSUM_NO_PSEUDOHDR) { |
|
| const struct ip *ip = |
|
| mtod(m, const struct ip *); |
|
| |
|
| hw_csum = in_cksum_phdr(ip->ip_src.s_addr, |
|
| ip->ip_dst.s_addr, |
|
| htons(hw_csum + len + IPPROTO_UDP)); |
|
| } |
|
| if ((hw_csum ^ 0xffff) != 0) |
|
| goto badcsum; |
|
| break; |
|
| } |
|
| |
|
| case M_CSUM_UDPv4: |
|
| /* Checksum was okay. */ |
|
| UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok); |
|
| break; |
|
| |
|
| default: |
|
| /* |
|
| * Need to compute it ourselves. Maybe skip checksum |
|
| * on loopback interfaces. |
|
| */ |
|
| if (__predict_true(!(m->m_pkthdr.rcvif->if_flags & |
|
| IFF_LOOPBACK) || |
|
| udp_do_loopback_cksum)) { |
|
| UDP_CSUM_COUNTER_INCR(&udp_swcsum); |
|
| if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0) |
|
| goto badcsum; |
|
| } |
|
| break; |
|
| } |
|
| |
|
| return 0; |
|
| |
|
| badcsum: |
|
| udpstat.udps_badsum++; |
|
| return -1; |
|
| } |
|
| |
|
| void |
void |
| |
#if __STDC__ |
| udp_input(struct mbuf *m, ...) |
udp_input(struct mbuf *m, ...) |
| |
#else |
| |
udp_input(m, va_alist) |
| |
struct mbuf *m; |
| |
va_dcl |
| |
#endif |
| { |
{ |
| va_list ap; |
va_list ap; |
| struct sockaddr_in src, dst; |
struct sockaddr_in src, dst; |
| Line 386 udp_input(struct mbuf *m, ...) |
|
| Line 263 udp_input(struct mbuf *m, ...) |
|
| /* |
/* |
| * Checksum extended UDP header and data. |
* Checksum extended UDP header and data. |
| */ |
*/ |
| if (udp4_input_checksum(m, uh, iphlen, len)) |
if (uh->uh_sum) { |
| goto badcsum; |
switch (m->m_pkthdr.csum_flags & |
| |
((m->m_pkthdr.rcvif->if_csum_flags_rx & M_CSUM_UDPv4) | |
| |
M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { |
| |
case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD: |
| |
UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad); |
| |
goto badcsum; |
| |
|
| |
case M_CSUM_UDPv4|M_CSUM_DATA: |
| |
UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data); |
| |
if ((m->m_pkthdr.csum_data ^ 0xffff) != 0) |
| |
goto badcsum; |
| |
break; |
| |
|
| |
case M_CSUM_UDPv4: |
| |
/* Checksum was okay. */ |
| |
UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok); |
| |
break; |
| |
|
| |
default: |
| |
/* Need to compute it ourselves. */ |
| |
UDP_CSUM_COUNTER_INCR(&udp_swcsum); |
| |
if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0) |
| |
goto badcsum; |
| |
break; |
| |
} |
| |
} |
| |
|
| /* construct source and dst sockaddrs. */ |
/* construct source and dst sockaddrs. */ |
| bzero(&src, sizeof(src)); |
bzero(&src, sizeof(src)); |
| Line 401 udp_input(struct mbuf *m, ...) |
|
| Line 303 udp_input(struct mbuf *m, ...) |
|
| bcopy(&ip->ip_dst, &dst.sin_addr, sizeof(dst.sin_addr)); |
bcopy(&ip->ip_dst, &dst.sin_addr, sizeof(dst.sin_addr)); |
| dst.sin_port = uh->uh_dport; |
dst.sin_port = uh->uh_dport; |
| |
|
| if ((n = udp4_realinput(&src, &dst, &m, iphlen)) == -1) { |
n = udp4_realinput(&src, &dst, m, iphlen); |
| udpstat.udps_hdrops++; |
|
| return; |
|
| } |
|
| #ifdef INET6 |
#ifdef INET6 |
| if (IN_MULTICAST(ip->ip_dst.s_addr) || n == 0) { |
if (IN_MULTICAST(ip->ip_dst.s_addr) || n == 0) { |
| struct sockaddr_in6 src6, dst6; |
struct sockaddr_in6 src6, dst6; |
|
|
| |
|
| badcsum: |
badcsum: |
| m_freem(m); |
m_freem(m); |
| |
udpstat.udps_badsum++; |
| } |
} |
| #endif |
#endif |
| |
|
| #ifdef INET6 |
#ifdef INET6 |
| static int |
|
| udp6_input_checksum(struct mbuf *m, const struct udphdr *uh, int off, int len) |
|
| { |
|
| |
|
| /* |
|
| * XXX it's better to record and check if this mbuf is |
|
| * already checked. |
|
| */ |
|
| |
|
| if (__predict_false((m->m_flags & M_LOOP) && !udp_do_loopback_cksum)) { |
|
| goto good; |
|
| } |
|
| if (uh->uh_sum == 0) { |
|
| udp6stat.udp6s_nosum++; |
|
| goto bad; |
|
| } |
|
| |
|
| switch (m->m_pkthdr.csum_flags & |
|
| ((m->m_pkthdr.rcvif->if_csum_flags_rx & M_CSUM_UDPv6) | |
|
| M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { |
|
| case M_CSUM_UDPv6|M_CSUM_TCP_UDP_BAD: |
|
| UDP_CSUM_COUNTER_INCR(&udp6_hwcsum_bad); |
|
| udp6stat.udp6s_badsum++; |
|
| goto bad; |
|
| |
|
| #if 0 /* notyet */ |
|
| case M_CSUM_UDPv6|M_CSUM_DATA: |
|
| #endif |
|
| |
|
| case M_CSUM_UDPv6: |
|
| /* Checksum was okay. */ |
|
| UDP_CSUM_COUNTER_INCR(&udp6_hwcsum_ok); |
|
| break; |
|
| |
|
| default: |
|
| /* |
|
| * Need to compute it ourselves. Maybe skip checksum |
|
| * on loopback interfaces. |
|
| */ |
|
| UDP_CSUM_COUNTER_INCR(&udp6_swcsum); |
|
| if (in6_cksum(m, IPPROTO_UDP, off, len) != 0) { |
|
| udp6stat.udp6s_badsum++; |
|
| goto bad; |
|
| } |
|
| } |
|
| |
|
| good: |
|
| return 0; |
|
| bad: |
|
| return -1; |
|
| } |
|
| |
|
| int |
int |
| udp6_input(struct mbuf **mp, int *offp, int proto) |
udp6_input(mp, offp, proto) |
| |
struct mbuf **mp; |
| |
int *offp, proto; |
| { |
{ |
| struct mbuf *m = *mp; |
struct mbuf *m = *mp; |
| int off = *offp; |
int off = *offp; |
| Line 567 udp6_input(struct mbuf **mp, int *offp, |
|
| Line 417 udp6_input(struct mbuf **mp, int *offp, |
|
| } |
} |
| |
|
| /* |
/* |
| * Checksum extended UDP header and data. Maybe skip checksum |
* Checksum extended UDP header and data. |
| * on loopback interfaces. |
|
| */ |
*/ |
| if (udp6_input_checksum(m, uh, off, ulen)) |
if (uh->uh_sum == 0) |
| |
udp6stat.udp6s_nosum++; |
| |
else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) { |
| |
udp6stat.udp6s_badsum++; |
| goto bad; |
goto bad; |
| |
} |
| |
|
| /* |
/* |
| * Construct source and dst sockaddrs. |
* Construct source and dst sockaddrs. |
|
|
| |
|
| #ifdef INET |
#ifdef INET |
| static void |
static void |
| udp4_sendup(struct mbuf *m, int off /* offset of data portion */, |
udp4_sendup(m, off, src, so) |
| struct sockaddr *src, struct socket *so) |
struct mbuf *m; |
| |
int off; /* offset of data portion */ |
| |
struct sockaddr *src; |
| |
struct socket *so; |
| { |
{ |
| struct mbuf *opts = NULL; |
struct mbuf *opts = NULL; |
| struct mbuf *n; |
struct mbuf *n; |
| Line 630 udp4_sendup(struct mbuf *m, int off /* o |
|
| Line 486 udp4_sendup(struct mbuf *m, int off /* o |
|
| return; |
return; |
| } |
} |
| |
|
| #if defined(IPSEC) || defined(FAST_IPSEC) |
#ifdef IPSEC |
| /* check AH/ESP integrity. */ |
/* check AH/ESP integrity. */ |
| if (so != NULL && ipsec4_in_reject_so(m, so)) { |
if (so != NULL && ipsec4_in_reject_so(m, so)) { |
| ipsecstat.in_polvio++; |
ipsecstat.in_polvio++; |
| if ((n = m_copy(m, 0, M_COPYALL)) != NULL) |
|
| icmp_error(n, ICMP_UNREACH, ICMP_UNREACH_ADMIN_PROHIBIT, |
|
| 0, 0); |
|
| return; |
return; |
| } |
} |
| #endif /*IPSEC*/ |
#endif /*IPSEC*/ |
| Line 654 udp4_sendup(struct mbuf *m, int off /* o |
|
| Line 507 udp4_sendup(struct mbuf *m, int off /* o |
|
| m_freem(n); |
m_freem(n); |
| if (opts) |
if (opts) |
| m_freem(opts); |
m_freem(opts); |
| so->so_rcv.sb_overflowed++; |
|
| udpstat.udps_fullsock++; |
udpstat.udps_fullsock++; |
| } else |
} else |
| sorwakeup(so); |
sorwakeup(so); |
| Line 664 udp4_sendup(struct mbuf *m, int off /* o |
|
| Line 516 udp4_sendup(struct mbuf *m, int off /* o |
|
| |
|
| #ifdef INET6 |
#ifdef INET6 |
| static void |
static void |
| udp6_sendup(struct mbuf *m, int off /* offset of data portion */, |
udp6_sendup(m, off, src, so) |
| struct sockaddr *src, struct socket *so) |
struct mbuf *m; |
| |
int off; /* offset of data portion */ |
| |
struct sockaddr *src; |
| |
struct socket *so; |
| { |
{ |
| struct mbuf *opts = NULL; |
struct mbuf *opts = NULL; |
| struct mbuf *n; |
struct mbuf *n; |
| Line 677 udp6_sendup(struct mbuf *m, int off /* o |
|
| Line 532 udp6_sendup(struct mbuf *m, int off /* o |
|
| return; |
return; |
| in6p = sotoin6pcb(so); |
in6p = sotoin6pcb(so); |
| |
|
| #if defined(IPSEC) || defined(FAST_IPSEC) |
#ifdef IPSEC |
| /* check AH/ESP integrity. */ |
/* check AH/ESP integrity. */ |
| if (so != NULL && ipsec6_in_reject_so(m, so)) { |
if (so != NULL && ipsec6_in_reject_so(m, so)) { |
| ipsec6stat.in_polvio++; |
ipsec6stat.in_polvio++; |
| if ((n = m_copy(m, 0, M_COPYALL)) != NULL) |
|
| icmp6_error(n, ICMP6_DST_UNREACH, |
|
| ICMP6_DST_UNREACH_ADMIN, 0); |
|
| return; |
return; |
| } |
} |
| #endif /*IPSEC*/ |
#endif /*IPSEC*/ |
| Line 700 udp6_sendup(struct mbuf *m, int off /* o |
|
| Line 552 udp6_sendup(struct mbuf *m, int off /* o |
|
| m_freem(n); |
m_freem(n); |
| if (opts) |
if (opts) |
| m_freem(opts); |
m_freem(opts); |
| so->so_rcv.sb_overflowed++; |
|
| udp6stat.udp6s_fullsock++; |
udp6stat.udp6s_fullsock++; |
| } else |
} else |
| sorwakeup(so); |
sorwakeup(so); |
| Line 710 udp6_sendup(struct mbuf *m, int off /* o |
|
| Line 561 udp6_sendup(struct mbuf *m, int off /* o |
|
| |
|
| #ifdef INET |
#ifdef INET |
| static int |
static int |
| udp4_realinput(struct sockaddr_in *src, struct sockaddr_in *dst, |
udp4_realinput(src, dst, m, off) |
| struct mbuf **mp, int off /* offset of udphdr */) |
struct sockaddr_in *src; |
| |
struct sockaddr_in *dst; |
| |
struct mbuf *m; |
| |
int off; /* offset of udphdr */ |
| { |
{ |
| u_int16_t *sport, *dport; |
u_int16_t *sport, *dport; |
| int rcvcnt; |
int rcvcnt; |
| struct in_addr *src4, *dst4; |
struct in_addr *src4, *dst4; |
| struct inpcb_hdr *inph; |
|
| struct inpcb *inp; |
struct inpcb *inp; |
| struct mbuf *m = *mp; |
|
| |
|
| rcvcnt = 0; |
rcvcnt = 0; |
| off += sizeof(struct udphdr); /* now, offset of payload */ |
off += sizeof(struct udphdr); /* now, offset of payload */ |
| Line 756 udp4_realinput(struct sockaddr_in *src, |
|
| Line 608 udp4_realinput(struct sockaddr_in *src, |
|
| /* |
/* |
| * Locate pcb(s) for datagram. |
* Locate pcb(s) for datagram. |
| */ |
*/ |
| CIRCLEQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) { |
CIRCLEQ_FOREACH(inp, &udbtable.inpt_queue, inp_queue) { |
| inp = (struct inpcb *)inph; |
|
| if (inp->inp_af != AF_INET) |
|
| continue; |
|
| |
|
| if (inp->inp_lport != *dport) |
if (inp->inp_lport != *dport) |
| continue; |
continue; |
| if (!in_nullhost(inp->inp_laddr)) { |
if (!in_nullhost(inp->inp_laddr)) { |
| Line 801 udp4_realinput(struct sockaddr_in *src, |
|
| Line 649 udp4_realinput(struct sockaddr_in *src, |
|
| return rcvcnt; |
return rcvcnt; |
| } |
} |
| |
|
| #ifdef IPSEC_NAT_T |
|
| /* Handle ESP over UDP */ |
|
| if (inp->inp_flags & INP_ESPINUDP_ALL) { |
|
| struct sockaddr *sa = (struct sockaddr *)src; |
|
| |
|
| switch(udp4_espinudp(mp, off, sa, inp->inp_socket)) { |
|
| case -1: /* Error, m was freeed */ |
|
| rcvcnt = -1; |
|
| goto bad; |
|
| break; |
|
| |
|
| case 1: /* ESP over UDP */ |
|
| rcvcnt++; |
|
| goto bad; |
|
| break; |
|
| |
|
| case 0: /* plain UDP */ |
|
| default: /* Unexpected */ |
|
| /* |
|
| * Normal UDP processing will take place |
|
| * m may have changed. |
|
| */ |
|
| m = *mp; |
|
| break; |
|
| } |
|
| } |
|
| #endif |
|
| |
|
| udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket); |
udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket); |
| rcvcnt++; |
rcvcnt++; |
| } |
} |
|
|
| |
|
| #ifdef INET6 |
#ifdef INET6 |
| static int |
static int |
| udp6_realinput(int af, struct sockaddr_in6 *src, struct sockaddr_in6 *dst, |
udp6_realinput(af, src, dst, m, off) |
| struct mbuf *m, int off) |
int af; /* af on packet */ |
| |
struct sockaddr_in6 *src; |
| |
struct sockaddr_in6 *dst; |
| |
struct mbuf *m; |
| |
int off; /* offset of udphdr */ |
| { |
{ |
| u_int16_t sport, dport; |
u_int16_t sport, dport; |
| int rcvcnt; |
int rcvcnt; |
| struct in6_addr src6, dst6; |
struct in6_addr src6, dst6; |
| const struct in_addr *dst4; |
const struct in_addr *dst4; |
| struct inpcb_hdr *inph; |
|
| struct in6pcb *in6p; |
struct in6pcb *in6p; |
| |
|
| rcvcnt = 0; |
rcvcnt = 0; |
| Line 889 udp6_realinput(int af, struct sockaddr_i |
|
| Line 712 udp6_realinput(int af, struct sockaddr_i |
|
| /* |
/* |
| * Locate pcb(s) for datagram. |
* Locate pcb(s) for datagram. |
| */ |
*/ |
| CIRCLEQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) { |
for (in6p = udb6.in6p_next; in6p != &udb6; |
| in6p = (struct in6pcb *)inph; |
in6p = in6p->in6p_next) { |
| if (in6p->in6p_af != AF_INET6) |
|
| continue; |
|
| |
|
| if (in6p->in6p_lport != dport) |
if (in6p->in6p_lport != dport) |
| continue; |
continue; |
| if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) { |
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) { |
| Line 934 udp6_realinput(int af, struct sockaddr_i |
|
| Line 754 udp6_realinput(int af, struct sockaddr_i |
|
| /* |
/* |
| * Locate pcb for datagram. |
* Locate pcb for datagram. |
| */ |
*/ |
| in6p = in6_pcblookup_connect(&udbtable, &src6, sport, |
in6p = in6_pcblookup_connect(&udb6, &src6, sport, |
| &dst6, dport, 0); |
&dst6, dport, 0); |
| if (in6p == 0) { |
if (in6p == 0) { |
| ++udpstat.udps_pcbhashmiss; |
++udpstat.udps_pcbhashmiss; |
| in6p = in6_pcblookup_bind(&udbtable, &dst6, dport, 0); |
in6p = in6_pcblookup_bind(&udb6, &dst6, dport, 0); |
| if (in6p == 0) |
if (in6p == 0) |
| return rcvcnt; |
return rcvcnt; |
| } |
} |
|
|
| * just wake up so that he can collect error status. |
* just wake up so that he can collect error status. |
| */ |
*/ |
| static void |
static void |
| udp_notify(struct inpcb *inp, int errno) |
udp_notify(inp, errno) |
| |
struct inpcb *inp; |
| |
int errno; |
| { |
{ |
| |
|
| inp->inp_socket->so_error = errno; |
inp->inp_socket->so_error = errno; |
| sorwakeup(inp->inp_socket); |
sorwakeup(inp->inp_socket); |
| sowwakeup(inp->inp_socket); |
sowwakeup(inp->inp_socket); |
| } |
} |
| |
|
| void * |
void * |
| udp_ctlinput(int cmd, struct sockaddr *sa, void *v) |
udp_ctlinput(cmd, sa, v) |
| |
int cmd; |
| |
struct sockaddr *sa; |
| |
void *v; |
| { |
{ |
| struct ip *ip = v; |
struct ip *ip = v; |
| struct udphdr *uh; |
struct udphdr *uh; |
| void (*notify)(struct inpcb *, int) = udp_notify; |
void (*notify) __P((struct inpcb *, int)) = udp_notify; |
| int errno; |
int errno; |
| |
|
| if (sa->sa_family != AF_INET |
if (sa->sa_family != AF_INET |
| Line 998 udp_ctlinput(int cmd, struct sockaddr *s |
|
| Line 824 udp_ctlinput(int cmd, struct sockaddr *s |
|
| } |
} |
| |
|
| int |
int |
| udp_ctloutput(op, so, level, optname, mp) |
#if __STDC__ |
| int op; |
udp_output(struct mbuf *m, ...) |
| struct socket *so; |
#else |
| int level, optname; |
udp_output(m, va_alist) |
| struct mbuf **mp; |
|
| { |
|
| int s; |
|
| int error = 0; |
|
| struct mbuf *m; |
struct mbuf *m; |
| struct inpcb *inp; |
va_dcl |
| int family; |
|
| |
|
| family = so->so_proto->pr_domain->dom_family; |
|
| |
|
| s = splsoftnet(); |
|
| switch (family) { |
|
| #ifdef INET |
|
| case PF_INET: |
|
| if (level != IPPROTO_UDP) { |
|
| error = ip_ctloutput(op, so, level, optname, mp); |
|
| goto end; |
|
| } |
|
| break; |
|
| #endif |
|
| #ifdef INET6 |
|
| case PF_INET6: |
|
| if (level != IPPROTO_UDP) { |
|
| error = ip6_ctloutput(op, so, level, optname, mp); |
|
| goto end; |
|
| } |
|
| break; |
|
| #endif |
|
| default: |
|
| error = EAFNOSUPPORT; |
|
| goto end; |
|
| break; |
|
| } |
|
| |
|
| |
|
| switch (op) { |
|
| case PRCO_SETOPT: |
|
| m = *mp; |
|
| inp = sotoinpcb(so); |
|
| |
|
| switch (optname) { |
|
| case UDP_ENCAP: |
|
| if (m == NULL || m->m_len < sizeof (int)) { |
|
| error = EINVAL; |
|
| goto end; |
|
| } |
|
| |
|
| switch(*mtod(m, int *)) { |
|
| #ifdef IPSEC_NAT_T |
|
| case 0: |
|
| inp->inp_flags &= ~INP_ESPINUDP_ALL; |
|
| break; |
|
| |
|
| case UDP_ENCAP_ESPINUDP: |
|
| inp->inp_flags &= ~INP_ESPINUDP_ALL; |
|
| inp->inp_flags |= INP_ESPINUDP; |
|
| break; |
|
| |
|
| case UDP_ENCAP_ESPINUDP_NON_IKE: |
|
| inp->inp_flags &= ~INP_ESPINUDP_ALL; |
|
| inp->inp_flags |= INP_ESPINUDP_NON_IKE; |
|
| break; |
|
| #endif |
#endif |
| default: |
|
| error = EINVAL; |
|
| goto end; |
|
| break; |
|
| } |
|
| break; |
|
| |
|
| default: |
|
| error = ENOPROTOOPT; |
|
| goto end; |
|
| break; |
|
| } |
|
| break; |
|
| |
|
| default: |
|
| error = EINVAL; |
|
| goto end; |
|
| break; |
|
| } |
|
| |
|
| end: |
|
| splx(s); |
|
| return error; |
|
| } |
|
| |
|
| |
|
| int |
|
| udp_output(struct mbuf *m, ...) |
|
| { |
{ |
| struct inpcb *inp; |
struct inpcb *inp; |
| struct udpiphdr *ui; |
struct udpiphdr *ui; |
| struct route *ro; |
|
| int len = m->m_pkthdr.len; |
int len = m->m_pkthdr.len; |
| int error = 0; |
int error = 0; |
| va_list ap; |
va_list ap; |
| Line 1137 udp_output(struct mbuf *m, ...) |
|
| Line 874 udp_output(struct mbuf *m, ...) |
|
| ui->ui_dport = inp->inp_fport; |
ui->ui_dport = inp->inp_fport; |
| ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr)); |
ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr)); |
| |
|
| ro = &inp->inp_route; |
|
| |
|
| /* |
/* |
| * Set up checksum and output datagram. |
* Set up checksum and output datagram. |
| */ |
*/ |
| Line 1159 udp_output(struct mbuf *m, ...) |
|
| Line 894 udp_output(struct mbuf *m, ...) |
|
| ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ |
((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ |
| udpstat.udps_opackets++; |
udpstat.udps_opackets++; |
| |
|
| return (ip_output(m, inp->inp_options, ro, |
#ifdef IPSEC |
| |
if (ipsec_setsocket(m, inp->inp_socket) != 0) { |
| |
error = ENOBUFS; |
| |
goto release; |
| |
} |
| |
#endif /*IPSEC*/ |
| |
|
| |
return (ip_output(m, inp->inp_options, &inp->inp_route, |
| inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST), |
inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST), |
| inp->inp_moptions, inp->inp_socket)); |
inp->inp_moptions)); |
| |
|
| release: |
release: |
| m_freem(m); |
m_freem(m); |
| Line 1174 int udp_recvspace = 40 * (1024 + sizeof( |
|
| Line 916 int udp_recvspace = 40 * (1024 + sizeof( |
|
| |
|
| /*ARGSUSED*/ |
/*ARGSUSED*/ |
| int |
int |
| udp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam, |
udp_usrreq(so, req, m, nam, control, p) |
| struct mbuf *control, struct lwp *l) |
struct socket *so; |
| |
int req; |
| |
struct mbuf *m, *nam, *control; |
| |
struct proc *p; |
| { |
{ |
| struct inpcb *inp; |
struct inpcb *inp; |
| struct proc *p; |
|
| int s; |
int s; |
| int error = 0; |
int error = 0; |
| |
|
| p = l ? l->l_proc : NULL; |
|
| if (req == PRU_CONTROL) |
if (req == PRU_CONTROL) |
| return (in_control(so, (long)m, (caddr_t)nam, |
return (in_control(so, (long)m, (caddr_t)nam, |
| (struct ifnet *)control, p)); |
(struct ifnet *)control, p)); |
| Line 1246 udp_usrreq(struct socket *so, int req, s |
|
| Line 989 udp_usrreq(struct socket *so, int req, s |
|
| break; |
break; |
| |
|
| case PRU_CONNECT: |
case PRU_CONNECT: |
| error = in_pcbconnect(inp, nam, p); |
error = in_pcbconnect(inp, nam); |
| if (error) |
if (error) |
| break; |
break; |
| soisconnected(so); |
soisconnected(so); |
| Line 1261 udp_usrreq(struct socket *so, int req, s |
|
| Line 1004 udp_usrreq(struct socket *so, int req, s |
|
| so->so_state &= ~SS_ISCONNECTED; /* XXX */ |
so->so_state &= ~SS_ISCONNECTED; /* XXX */ |
| in_pcbdisconnect(inp); |
in_pcbdisconnect(inp); |
| inp->inp_laddr = zeroin_addr; /* XXX */ |
inp->inp_laddr = zeroin_addr; /* XXX */ |
| |
if (inp->inp_ia != NULL) { |
| |
LIST_REMOVE(inp, inp_ialink); |
| |
IFAFREE(&inp->inp_ia->ia_ifa); |
| |
inp->inp_ia = NULL; |
| |
} |
| in_pcbstate(inp, INP_BOUND); /* XXX */ |
in_pcbstate(inp, INP_BOUND); /* XXX */ |
| break; |
break; |
| |
|
| Line 1288 udp_usrreq(struct socket *so, int req, s |
|
| Line 1036 udp_usrreq(struct socket *so, int req, s |
|
| error = EISCONN; |
error = EISCONN; |
| goto die; |
goto die; |
| } |
} |
| error = in_pcbconnect(inp, nam, p); |
error = in_pcbconnect(inp, nam); |
| if (error) |
if (error) |
| goto die; |
goto die; |
| } else { |
} else { |
| Line 1305 udp_usrreq(struct socket *so, int req, s |
|
| Line 1053 udp_usrreq(struct socket *so, int req, s |
|
| in_pcbstate(inp, INP_BOUND); /* XXX */ |
in_pcbstate(inp, INP_BOUND); /* XXX */ |
| } |
} |
| die: |
die: |
| |
if (inp->inp_ia != NULL && in_nullhost(inp->inp_laddr)) { |
| |
LIST_REMOVE(inp, inp_ialink); |
| |
IFAFREE(&inp->inp_ia->ia_ifa); |
| |
inp->inp_ia = NULL; |
| |
} |
| if (m) |
if (m) |
| m_freem(m); |
m_freem(m); |
| } |
} |
|
|
| /* |
/* |
| * Sysctl for udp variables. |
* Sysctl for udp variables. |
| */ |
*/ |
| SYSCTL_SETUP(sysctl_net_inet_udp_setup, "sysctl net.inet.udp subtree setup") |
int |
| { |
udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen) |
| |
int *name; |
| sysctl_createv(clog, 0, NULL, NULL, |
u_int namelen; |
| CTLFLAG_PERMANENT, |
void *oldp; |
| CTLTYPE_NODE, "net", NULL, |
size_t *oldlenp; |
| NULL, 0, NULL, 0, |
void *newp; |
| CTL_NET, CTL_EOL); |
size_t newlen; |
| sysctl_createv(clog, 0, NULL, NULL, |
|
| CTLFLAG_PERMANENT, |
|
| CTLTYPE_NODE, "inet", NULL, |
|
| NULL, 0, NULL, 0, |
|
| CTL_NET, PF_INET, CTL_EOL); |
|
| sysctl_createv(clog, 0, NULL, NULL, |
|
| CTLFLAG_PERMANENT, |
|
| CTLTYPE_NODE, "udp", |
|
| SYSCTL_DESCR("UDPv4 related settings"), |
|
| NULL, 0, NULL, 0, |
|
| CTL_NET, PF_INET, IPPROTO_UDP, CTL_EOL); |
|
| |
|
| sysctl_createv(clog, 0, NULL, NULL, |
|
| CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
| CTLTYPE_INT, "checksum", |
|
| SYSCTL_DESCR("Compute UDP checksums"), |
|
| NULL, 0, &udpcksum, 0, |
|
| CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_CHECKSUM, |
|
| CTL_EOL); |
|
| sysctl_createv(clog, 0, NULL, NULL, |
|
| CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
| CTLTYPE_INT, "sendspace", |
|
| SYSCTL_DESCR("Default UDP send buffer size"), |
|
| NULL, 0, &udp_sendspace, 0, |
|
| CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_SENDSPACE, |
|
| CTL_EOL); |
|
| sysctl_createv(clog, 0, NULL, NULL, |
|
| CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
| CTLTYPE_INT, "recvspace", |
|
| SYSCTL_DESCR("Default UDP receive buffer size"), |
|
| NULL, 0, &udp_recvspace, 0, |
|
| CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE, |
|
| CTL_EOL); |
|
| sysctl_createv(clog, 0, NULL, NULL, |
|
| CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
| CTLTYPE_INT, "do_loopback_cksum", |
|
| SYSCTL_DESCR("Perform UDP checksum on loopback"), |
|
| NULL, 0, &udp_do_loopback_cksum, 0, |
|
| CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_LOOPBACKCKSUM, |
|
| CTL_EOL); |
|
| sysctl_createv(clog, 0, NULL, NULL, |
|
| CTLFLAG_PERMANENT, |
|
| CTLTYPE_STRUCT, "pcblist", |
|
| SYSCTL_DESCR("UDP protocol control block list"), |
|
| sysctl_inpcblist, 0, &udbtable, 0, |
|
| CTL_NET, PF_INET, IPPROTO_UDP, CTL_CREATE, |
|
| CTL_EOL); |
|
| sysctl_createv(clog, 0, NULL, NULL, |
|
| CTLFLAG_PERMANENT, |
|
| CTLTYPE_STRUCT, "stats", |
|
| SYSCTL_DESCR("UDP statistics"), |
|
| NULL, 0, &udpstat, sizeof(udpstat), |
|
| CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_STATS, |
|
| CTL_EOL); |
|
| } |
|
| #endif |
|
| |
|
| #if (defined INET && defined IPSEC_NAT_T) |
|
| /* |
|
| * Returns: |
|
| * 1 if the packet was processed |
|
| * 0 if normal UDP processing should take place |
|
| * -1 if an error occurent and m was freed |
|
| */ |
|
| static int |
|
| udp4_espinudp(mp, off, src, so) |
|
| struct mbuf **mp; |
|
| int off; |
|
| struct sockaddr *src; |
|
| struct socket *so; |
|
| { |
{ |
| size_t len; |
/* All sysctl names at this level are terminal. */ |
| caddr_t data; |
if (namelen != 1) |
| struct inpcb *inp; |
return (ENOTDIR); |
| size_t skip = 0; |
|
| size_t minlen; |
switch (name[0]) { |
| size_t iphdrlen; |
case UDPCTL_CHECKSUM: |
| struct ip *ip; |
return (sysctl_int(oldp, oldlenp, newp, newlen, &udpcksum)); |
| struct mbuf *n; |
case UDPCTL_SENDSPACE: |
| struct m_tag *tag; |
return (sysctl_int(oldp, oldlenp, newp, newlen, |
| struct udphdr *udphdr; |
&udp_sendspace)); |
| u_int16_t sport, dport; |
case UDPCTL_RECVSPACE: |
| struct mbuf *m = *mp; |
return (sysctl_int(oldp, oldlenp, newp, newlen, |
| |
&udp_recvspace)); |
| /* |
default: |
| * Collapse the mbuf chain if the first mbuf is too short |
return (ENOPROTOOPT); |
| * The longest case is: UDP + non ESP marker + ESP |
|
| */ |
|
| minlen = off + sizeof(u_int64_t) + sizeof(struct esp); |
|
| if (minlen > m->m_pkthdr.len) |
|
| minlen = m->m_pkthdr.len; |
|
| |
|
| if (m->m_len < minlen) { |
|
| if ((*mp = m_pullup(m, minlen)) == NULL) { |
|
| printf("udp4_espinudp: m_pullup failed\n"); |
|
| return -1; |
|
| } |
|
| m = *mp; |
|
| } |
|
| |
|
| len = m->m_len - off; |
|
| data = mtod(m, caddr_t) + off; |
|
| inp = sotoinpcb(so); |
|
| |
|
| /* Ignore keepalive packets */ |
|
| if ((len == 1) && (data[0] == '\xff')) { |
|
| return 1; |
|
| } |
|
| |
|
| /* |
|
| * Check that the payload is long enough to hold |
|
| * an ESP header and compute the length of encapsulation |
|
| * header to remove |
|
| */ |
|
| if (inp->inp_flags & INP_ESPINUDP) { |
|
| u_int32_t *st = (u_int32_t *)data; |
|
| |
|
| if ((len <= sizeof(struct esp)) || (*st == 0)) |
|
| return 0; /* Normal UDP processing */ |
|
| |
|
| skip = sizeof(struct udphdr); |
|
| } |
|
| |
|
| if (inp->inp_flags & INP_ESPINUDP_NON_IKE) { |
|
| u_int32_t *st = (u_int32_t *)data; |
|
| |
|
| if ((len <= sizeof(u_int64_t) + sizeof(struct esp)) |
|
| || ((st[0] | st[1]) != 0)) |
|
| return 0; /* Normal UDP processing */ |
|
| |
|
| skip = sizeof(struct udphdr) + sizeof(u_int64_t); |
|
| } |
|
| |
|
| /* |
|
| * Get the UDP ports. They are handled in network |
|
| * order everywhere in IPSEC_NAT_T code. |
|
| */ |
|
| udphdr = (struct udphdr *)(data - skip); |
|
| sport = udphdr->uh_sport; |
|
| dport = udphdr->uh_dport; |
|
| |
|
| /* |
|
| * Remove the UDP header (and possibly the non ESP marker) |
|
| * IP header lendth is iphdrlen |
|
| * Before: |
|
| * <--- off ---> |
|
| * +----+------+-----+ |
|
| * | IP | UDP | ESP | |
|
| * +----+------+-----+ |
|
| * <-skip-> |
|
| * After: |
|
| * +----+-----+ |
|
| * | IP | ESP | |
|
| * +----+-----+ |
|
| * <-skip-> |
|
| */ |
|
| iphdrlen = off - sizeof(struct udphdr); |
|
| memmove(mtod(m, caddr_t) + skip, mtod(m, caddr_t), iphdrlen); |
|
| m_adj(m, skip); |
|
| |
|
| ip = mtod(m, struct ip *); |
|
| ip->ip_len = htons(ntohs(ip->ip_len) - skip); |
|
| ip->ip_p = IPPROTO_ESP; |
|
| |
|
| /* |
|
| * Copy the mbuf to avoid multiple free, as both |
|
| * esp4_input (which we call) and udp_input (which |
|
| * called us) free the mbuf. |
|
| */ |
|
| if ((n = m_dup(m, 0, M_COPYALL, M_DONTWAIT)) == NULL) { |
|
| printf("udp4_espinudp: m_dup failed\n"); |
|
| return 0; |
|
| } |
} |
| |
/* NOTREACHED */ |
| /* |
|
| * Add a PACKET_TAG_IPSEC_NAT_T_PORT tag to remember |
|
| * the source UDP port. This is required if we want |
|
| * to select the right SPD for multiple hosts behind |
|
| * same NAT |
|
| */ |
|
| if ((tag = m_tag_get(PACKET_TAG_IPSEC_NAT_T_PORTS, |
|
| sizeof(sport) + sizeof(dport), M_DONTWAIT)) == NULL) { |
|
| printf("udp4_espinudp: m_tag_get failed\n"); |
|
| m_freem(n); |
|
| return 0; |
|
| } |
|
| ((u_int16_t *)(tag + 1))[0] = sport; |
|
| ((u_int16_t *)(tag + 1))[1] = dport; |
|
| m_tag_prepend(n, tag); |
|
| |
|
| esp4_input(n, iphdrlen); |
|
| |
|
| /* We handled it, it shoudln't be handled by UDP */ |
|
| return 1; |
|
| } |
} |
| #endif |
#endif |