Differential D8877 Diff 23176 sys/netinet6/udp6_usrreq.c

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sys/netinet6/udp6_usrreq.c

Show First 20 Lines • Show All 198 Lines • ▼ Show 20 Lines	udp6_input(struct mbuf *mp, int offp, int proto)
struct udphdr *uh;		struct udphdr *uh;
struct inpcb *inp;		struct inpcb *inp;
struct inpcbinfo *pcbinfo;		struct inpcbinfo *pcbinfo;
struct udpcb *up;		struct udpcb *up;
int off = *offp;		int off = *offp;
int cscov_partial;		int cscov_partial;
int plen, ulen;		int plen, ulen;
struct sockaddr_in6 fromsa;		struct sockaddr_in6 fromsa;
struct m_tag *fwd_tag;		struct sockaddr_in6 next_hop6;
uint16_t uh_sum;		uint16_t uh_sum;
uint8_t nxt;		uint8_t nxt;

ifp = m->m_pkthdr.rcvif;		ifp = m->m_pkthdr.rcvif;
ip6 = mtod(m, struct ip6_hdr *);		ip6 = mtod(m, struct ip6_hdr *);

#ifndef PULLDOWN_TEST		#ifndef PULLDOWN_TEST
IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE);		IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE);
▲ Show 20 Lines • Show All 192 Lines • ▼ Show 20 Lines	#endif
inp_lost:		inp_lost:
return (IPPROTO_DONE);		return (IPPROTO_DONE);
}		}
/*		/*
* Locate pcb for datagram.		* Locate pcb for datagram.
*/		*/

/*		/*
* Grab info from PACKET_TAG_IPFORWARD tag prepended to the chain.		* Grab info from IP forward tag prepended to the chain.
*/		*/
if ((m->m_flags & M_IP6_NEXTHOP) &&		if (IP6_HAS_NEXTHOP(m) && !ip6_get_fwdtag(m, &next_hop6, NULL)) {
(fwd_tag = m_tag_find(m, PACKET_TAG_IPFORWARD, NULL)) != NULL) {
struct sockaddr_in6 *next_hop6;

next_hop6 = (struct sockaddr_in6 *)(fwd_tag + 1);

/*		/*
* Transparently forwarded. Pretend to be the destination.		* Transparently forwarded. Pretend to be the destination.
* Already got one like this?		* Already got one like this?
*/		*/
inp = in6_pcblookup_mbuf(pcbinfo, &ip6->ip6_src,		inp = in6_pcblookup_mbuf(pcbinfo, &ip6->ip6_src,
uh->uh_sport, &ip6->ip6_dst, uh->uh_dport,		uh->uh_sport, &ip6->ip6_dst, uh->uh_dport,
INPLOOKUP_RLOCKPCB, m->m_pkthdr.rcvif, m);		INPLOOKUP_RLOCKPCB, m->m_pkthdr.rcvif, m);
if (!inp) {		if (!inp) {
/*		/*
* It's new. Try to find the ambushing socket.		* It's new. Try to find the ambushing socket.
* Because we've rewritten the destination address,		* Because we've rewritten the destination address,
* any hardware-generated hash is ignored.		* any hardware-generated hash is ignored.
*/		*/
inp = in6_pcblookup(pcbinfo, &ip6->ip6_src,		inp = in6_pcblookup(pcbinfo, &ip6->ip6_src,
uh->uh_sport, &next_hop6->sin6_addr,		uh->uh_sport, &next_hop6.sin6_addr,
next_hop6->sin6_port ? htons(next_hop6->sin6_port) :		next_hop6.sin6_port ? htons(next_hop6.sin6_port) :
uh->uh_dport, INPLOOKUP_WILDCARD \|		uh->uh_dport, INPLOOKUP_WILDCARD \|
INPLOOKUP_RLOCKPCB, m->m_pkthdr.rcvif);		INPLOOKUP_RLOCKPCB, m->m_pkthdr.rcvif);
}		}
/* Remove the tag from the packet. We don't need it anymore. */		/* Remove the tag from the packet. We don't need it anymore. */
m_tag_delete(m, fwd_tag);		ip6_flush_fwdtag(m);
m->m_flags &= ~M_IP6_NEXTHOP;
} else		} else
inp = in6_pcblookup_mbuf(pcbinfo, &ip6->ip6_src,		inp = in6_pcblookup_mbuf(pcbinfo, &ip6->ip6_src,
uh->uh_sport, &ip6->ip6_dst, uh->uh_dport,		uh->uh_sport, &ip6->ip6_dst, uh->uh_dport,
INPLOOKUP_WILDCARD \| INPLOOKUP_RLOCKPCB,		INPLOOKUP_WILDCARD \| INPLOOKUP_RLOCKPCB,
m->m_pkthdr.rcvif, m);		m->m_pkthdr.rcvif, m);
if (inp == NULL) {		if (inp == NULL) {
if (udp_log_in_vain) {		if (udp_log_in_vain) {
char ip6bufs[INET6_ADDRSTRLEN];		char ip6bufs[INET6_ADDRSTRLEN];
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