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Index: sys/netinet/udp_usrreq.c
===================================================================
--- sys/netinet/udp_usrreq.c
+++ sys/netinet/udp_usrreq.c
@@ -162,7 +162,7 @@
#ifdef INET
static void udp_detach(struct socket *so);
static int udp_output(struct inpcb *, struct mbuf *, struct sockaddr *,
- struct mbuf *, struct thread *);
+ struct mbuf *, struct thread *, int);
#endif
static void
@@ -1084,7 +1084,7 @@
#ifdef INET
static int
udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
- struct mbuf *control, struct thread *td)
+ struct mbuf *control, struct thread *td, int flags)
{
struct udpiphdr *ui;
int len = m->m_pkthdr.len;
@@ -1148,6 +1148,60 @@
error = EINVAL;
break;
}
+#ifdef INET6
+ if ((flags & PRUS_IPV6) != 0 &&
+ cm->cmsg_level == IPPROTO_IPV6 &&
+ (cm->cmsg_type == IPV6_2292PKTINFO ||
+ cm->cmsg_type == IPV6_PKTINFO)) {
+ struct ifnet *ifp = NULL;
+ struct in6_pktinfo *pktinfo;
+
+ if (cm->cmsg_len !=
+ CMSG_LEN(sizeof(struct in6_pktinfo))) {
+ error = EINVAL;
+ goto err;
+ }
+
+ pktinfo = (struct in6_pktinfo *)CMSG_DATA(cm);
+ if (!IN6_IS_ADDR_V4MAPPED(&pktinfo->ipi6_addr) ||
+ !IN6_IS_ADDR_UNSPECIFIED(&pktinfo->ipi6_addr))
+ {
+ error = EINVAL;
+ goto err;
+ }
+ /* Validate the interface index if specified. */
+ if (pktinfo->ipi6_ifindex > V_if_index) {
+ error = ENXIO;
+ goto err;
+ }
+ if (pktinfo->ipi6_ifindex) {
+ ifp = ifnet_byindex(pktinfo->ipi6_ifindex);
+ if (ifp == NULL) {
+ error = ENXIO;
+ goto err;
+ }
+ }
+ if (ifp != NULL &&
+ !IN6_IS_ADDR_UNSPECIFIED(&pktinfo->ipi6_addr)) {
+ struct in_addr ia;
+
+ ia.s_addr =
+ pktinfo->ipi6_addr.s6_addr32[3];
+ if (in_ifhasaddr(ifp, ia) == 0) {
+ error = EADDRNOTAVAIL;
+ goto err;
+ }
+ }
+ bzero(&src, sizeof(src));
+ src.sin_family = AF_INET;
+ src.sin_len = sizeof(src);
+ src.sin_port = inp->inp_lport;
+ src.sin_addr.s_addr =
+ pktinfo->ipi6_addr.s6_addr32[3];
+ continue;
+ }
+#endif
+
if (cm->cmsg_level != IPPROTO_IP)
continue;
@@ -1203,6 +1257,9 @@
error = ENOPROTOOPT;
break;
}
+#ifdef INET6
+err:
+#endif
if (error)
break;
}
@@ -1695,7 +1752,7 @@
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp_send: inp == NULL"));
- return (udp_output(inp, m, addr, control, td));
+ return (udp_output(inp, m, addr, control, td, flags));
}
#endif /* INET */
Index: sys/netinet6/udp6_usrreq.c
===================================================================
--- sys/netinet6/udp6_usrreq.c
+++ sys/netinet6/udp6_usrreq.c
@@ -784,7 +784,7 @@
in6_sin6_2_sin_in_sock((struct sockaddr *)sin6);
pru = inetsw[ip_protox[nxt]].pr_usrreqs;
/* addr will just be freed in sendit(). */
- return ((*pru->pru_send)(so, flags_arg, m,
+ return ((*pru->pru_send)(so, flags_arg | PRUS_IPV6, m,
(struct sockaddr *)sin6, control, td));
}
} else
Index: sys/sys/protosw.h
===================================================================
--- sys/sys/protosw.h
+++ sys/sys/protosw.h
@@ -210,6 +210,7 @@
#define PRUS_EOF 0x2
#define PRUS_MORETOCOME 0x4
#define PRUS_NOTREADY 0x8
+#define PRUS_IPV6 0x10
int (*pru_ready)(struct socket *so, struct mbuf *m, int count);
int (*pru_sense)(struct socket *so, struct stat *sb);
int (*pru_shutdown)(struct socket *so);

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