version 1.103.2.6, 2005/01/17 19:32:54 |
version 1.124, 2004/09/03 18:14:09 |
Line 141 int udpcksum = 1; |
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Line 141 int udpcksum = 1; |
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#else |
#else |
int udpcksum = 0; /* XXX */ |
int udpcksum = 0; /* XXX */ |
#endif |
#endif |
int udp_do_loopback_cksum = 0; |
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struct inpcbtable udbtable; |
struct inpcbtable udbtable; |
struct udpstat udpstat; |
struct udpstat udpstat; |
Line 151 static void udp4_sendup (struct mbuf *, |
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Line 150 static void udp4_sendup (struct mbuf *, |
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struct socket *); |
struct socket *); |
static int udp4_realinput (struct sockaddr_in *, struct sockaddr_in *, |
static int udp4_realinput (struct sockaddr_in *, struct sockaddr_in *, |
struct mbuf *, int); |
struct mbuf *, int); |
static int udp4_input_checksum(struct mbuf *, const struct udphdr *, int, int); |
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#endif |
#endif |
#ifdef INET6 |
#ifdef INET6 |
static void udp6_sendup (struct mbuf *, int, struct sockaddr *, |
static void udp6_sendup (struct mbuf *, int, struct sockaddr *, |
struct socket *); |
struct socket *); |
static int udp6_realinput (int, struct sockaddr_in6 *, |
static int udp6_realinput (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); |
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#endif |
#endif |
#ifdef INET |
#ifdef INET |
static void udp_notify (struct inpcb *, int); |
static void udp_notify (struct inpcb *, int); |
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MOWNER_ATTACH(&udp_mowner); |
MOWNER_ATTACH(&udp_mowner); |
} |
} |
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/* |
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* Checksum extended UDP header and data. |
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*/ |
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int |
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udp_input_checksum(int af, struct mbuf *m, const struct udphdr *uh, |
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int iphlen, int len) |
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{ |
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switch (af) { |
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#ifdef INET |
#ifdef INET |
case AF_INET: |
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return udp4_input_checksum(m, uh, iphlen, len); |
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#endif |
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#ifdef INET6 |
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case AF_INET6: |
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return udp6_input_checksum(m, uh, iphlen, len); |
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#endif |
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} |
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#ifdef DIAGNOSTIC |
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panic("udp_input_checksum: unknown af %d", af); |
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#endif |
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/* NOTREACHED */ |
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return -1; |
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} |
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#ifdef INET |
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/* |
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* Checksum extended UDP header and data. |
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*/ |
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static int |
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udp4_input_checksum(struct mbuf *m, const struct udphdr *uh, |
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int iphlen, int len) |
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{ |
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/* |
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* XXX it's better to record and check if this mbuf is |
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* already checked. |
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*/ |
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if (uh->uh_sum == 0) |
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return 0; |
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switch (m->m_pkthdr.csum_flags & |
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((m->m_pkthdr.rcvif->if_csum_flags_rx & M_CSUM_UDPv4) | |
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M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { |
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case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD: |
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UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad); |
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goto badcsum; |
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case M_CSUM_UDPv4|M_CSUM_DATA: { |
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u_int32_t hw_csum = m->m_pkthdr.csum_data; |
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UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data); |
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if (m->m_pkthdr.csum_flags & M_CSUM_NO_PSEUDOHDR) { |
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const struct ip *ip = |
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mtod(m, const struct ip *); |
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hw_csum = in_cksum_phdr(ip->ip_src.s_addr, |
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ip->ip_dst.s_addr, |
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htons(hw_csum + len + IPPROTO_UDP)); |
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} |
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if ((hw_csum ^ 0xffff) != 0) |
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goto badcsum; |
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break; |
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} |
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case M_CSUM_UDPv4: |
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/* Checksum was okay. */ |
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UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok); |
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break; |
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default: |
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/* |
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* Need to compute it ourselves. Maybe skip checksum |
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* on loopback interfaces. |
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*/ |
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if (__predict_true(!(m->m_pkthdr.rcvif->if_flags & |
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IFF_LOOPBACK) || |
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udp_do_loopback_cksum)) { |
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UDP_CSUM_COUNTER_INCR(&udp_swcsum); |
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if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0) |
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goto badcsum; |
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} |
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break; |
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} |
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return 0; |
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badcsum: |
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udpstat.udps_badsum++; |
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return -1; |
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} |
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void |
void |
udp_input(struct mbuf *m, ...) |
udp_input(struct mbuf *m, ...) |
{ |
{ |
Line 359 udp_input(struct mbuf *m, ...) |
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Line 261 udp_input(struct mbuf *m, ...) |
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/* |
/* |
* 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 & |
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((m->m_pkthdr.rcvif->if_csum_flags_rx & M_CSUM_UDPv4) | |
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M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) { |
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case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD: |
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UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad); |
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goto badcsum; |
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case M_CSUM_UDPv4|M_CSUM_DATA: { |
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u_int32_t hw_csum = m->m_pkthdr.csum_data; |
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UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data); |
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if (m->m_pkthdr.csum_flags & M_CSUM_NO_PSEUDOHDR) |
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hw_csum = in_cksum_phdr(ip->ip_src.s_addr, |
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ip->ip_dst.s_addr, |
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htons(hw_csum + len + IPPROTO_UDP)); |
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if ((hw_csum ^ 0xffff) != 0) |
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goto badcsum; |
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break; |
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} |
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case M_CSUM_UDPv4: |
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/* Checksum was okay. */ |
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UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok); |
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break; |
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default: |
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/* Need to compute it ourselves. */ |
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UDP_CSUM_COUNTER_INCR(&udp_swcsum); |
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if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0) |
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goto badcsum; |
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break; |
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} |
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} |
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/* construct source and dst sockaddrs. */ |
/* construct source and dst sockaddrs. */ |
bzero(&src, sizeof(src)); |
bzero(&src, sizeof(src)); |
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badcsum: |
badcsum: |
m_freem(m); |
m_freem(m); |
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udpstat.udps_badsum++; |
} |
} |
#endif |
#endif |
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#ifdef INET6 |
#ifdef INET6 |
static int |
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udp6_input_checksum(struct mbuf *m, const struct udphdr *uh, int off, int len) |
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{ |
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if (__predict_false((m->m_flags & M_LOOP) && !udp_do_loopback_cksum)) { |
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goto good; |
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} |
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if (uh->uh_sum == 0) { |
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udp6stat.udp6s_nosum++; |
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goto bad; |
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} |
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if (in6_cksum(m, IPPROTO_UDP, off, len) != 0) { |
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udp6stat.udp6s_badsum++; |
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goto bad; |
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} |
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good: |
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return 0; |
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bad: |
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return -1; |
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} |
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int |
int |
udp6_input(struct mbuf **mp, int *offp, int proto) |
udp6_input(struct mbuf **mp, int *offp, int proto) |
{ |
{ |
Line 507 udp6_input(struct mbuf **mp, int *offp, |
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Line 419 udp6_input(struct mbuf **mp, int *offp, |
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} |
} |
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/* |
/* |
* Checksum extended UDP header and data. Maybe skip checksum |
* Checksum extended UDP header and data. |
* on loopback interfaces. |
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*/ |
*/ |
if (udp6_input_checksum(m, uh, off, ulen)) |
if (uh->uh_sum == 0) { |
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udp6stat.udp6s_nosum++; |
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goto bad; |
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} |
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if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) { |
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udp6stat.udp6s_badsum++; |
goto bad; |
goto bad; |
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} |
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/* |
/* |
* Construct source and dst sockaddrs. |
* Construct source and dst sockaddrs. |
Line 913 udp_output(struct mbuf *m, ...) |
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Line 830 udp_output(struct mbuf *m, ...) |
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{ |
{ |
struct inpcb *inp; |
struct inpcb *inp; |
struct udpiphdr *ui; |
struct udpiphdr *ui; |
struct route *ro; |
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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 954 udp_output(struct mbuf *m, ...) |
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Line 870 udp_output(struct mbuf *m, ...) |
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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)); |
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ro = &inp->inp_route; |
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/* |
/* |
* Set up checksum and output datagram. |
* Set up checksum and output datagram. |
*/ |
*/ |
Line 963 udp_output(struct mbuf *m, ...) |
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Line 877 udp_output(struct mbuf *m, ...) |
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/* |
/* |
* XXX Cache pseudo-header checksum part for |
* XXX Cache pseudo-header checksum part for |
* XXX "connected" UDP sockets. |
* XXX "connected" UDP sockets. |
* Maybe skip checksums on loopback interfaces. |
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*/ |
*/ |
ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr, |
ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr, |
ui->ui_dst.s_addr, htons((u_int16_t)len + |
ui->ui_dst.s_addr, htons((u_int16_t)len + |
sizeof(struct udphdr) + IPPROTO_UDP)); |
sizeof(struct udphdr) + IPPROTO_UDP)); |
if (__predict_true(ro->ro_rt == NULL || |
m->m_pkthdr.csum_flags = M_CSUM_UDPv4; |
!(ro->ro_rt->rt_ifp->if_flags & |
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IFF_LOOPBACK) || |
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udp_do_loopback_cksum)) |
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m->m_pkthdr.csum_flags = M_CSUM_UDPv4; |
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else |
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m->m_pkthdr.csum_flags = 0; |
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m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); |
m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); |
} else |
} else |
ui->ui_sum = 0; |
ui->ui_sum = 0; |
Line 983 udp_output(struct mbuf *m, ...) |
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Line 890 udp_output(struct mbuf *m, ...) |
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((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++; |
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return (ip_output(m, inp->inp_options, ro, |
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, inp->inp_socket)); |
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Line 999 int udp_recvspace = 40 * (1024 + sizeof( |
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Line 906 int udp_recvspace = 40 * (1024 + sizeof( |
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/*ARGSUSED*/ |
/*ARGSUSED*/ |
int |
int |
udp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam, |
udp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam, |
struct mbuf *control, struct lwp *l) |
struct mbuf *control, struct proc *p) |
{ |
{ |
struct inpcb *inp; |
struct inpcb *inp; |
struct proc *p; |
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int s; |
int s; |
int error = 0; |
int error = 0; |
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p = l ? l->l_proc : NULL; |
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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 1212 SYSCTL_SETUP(sysctl_net_inet_udp_setup, |
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Line 1117 SYSCTL_SETUP(sysctl_net_inet_udp_setup, |
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NULL, 0, &udp_recvspace, 0, |
NULL, 0, &udp_recvspace, 0, |
CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE, |
CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE, |
CTL_EOL); |
CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
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CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
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CTLTYPE_INT, "do_loopback_cksum", |
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SYSCTL_DESCR("Perform UDP checksum on loopback"), |
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NULL, 0, &udp_do_loopback_cksum, 0, |
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CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_LOOPBACKCKSUM, |
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CTL_EOL); |
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} |
} |
#endif |
#endif |