diff options
Diffstat (limited to 'sys/netinet6/nd6.c')
| -rw-r--r-- | sys/netinet6/nd6.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c index e9081c4..c9d9be0 100644 --- a/sys/netinet6/nd6.c +++ b/sys/netinet6/nd6.c @@ -72,6 +72,7 @@ __FBSDID("$FreeBSD$"); #include <netinet6/nd6.h> #include <netinet6/in6_ifattach.h> #include <netinet/icmp6.h> +#include <netinet6/send.h> #include <sys/limits.h> @@ -121,6 +122,8 @@ VNET_DEFINE(int, nd6_recalc_reachtm_interval) = ND6_RECALC_REACHTM_INTERVAL; static struct sockaddr_in6 all1_sa; +int (*send_sendso_input_hook)(struct mbuf *, struct ifnet *, int, int); + static int nd6_is_new_addr_neighbor __P((struct sockaddr_in6 *, struct ifnet *)); static void nd6_setmtu0(struct ifnet *, struct nd_ifinfo *); @@ -1758,9 +1761,12 @@ nd6_output_lle(struct ifnet *ifp, struct ifnet *origifp, struct mbuf *m0, struct mbuf **chain) { struct mbuf *m = m0; + struct m_tag *mtag; struct llentry *ln = lle; + struct ip6_hdr *ip6; int error = 0; int flags = 0; + int ip6len; #ifdef INVARIANTS if (lle != NULL) { @@ -1935,6 +1941,28 @@ nd6_output_lle(struct ifnet *ifp, struct ifnet *origifp, struct mbuf *m0, #ifdef MAC mac_netinet6_nd6_send(ifp, m); #endif + + /* + * If called from nd6_ns_output() (NS), nd6_na_output() (NA), + * icmp6_redirect_output() (REDIRECT) or from rip6_output() (RS, RA + * as handled by rtsol and rtadvd), mbufs will be tagged for SeND + * to be diverted to user space. When re-injected into the kernel, + * send_output() will directly dispatch them to the outgoing interface. + */ + if (send_sendso_input_hook != NULL) { + mtag = m_tag_find(m, PACKET_TAG_ND_OUTGOING, NULL); + if (mtag != NULL) { + ip6 = mtod(m, struct ip6_hdr *); + ip6len = sizeof(struct ip6_hdr) + ntohs(ip6->ip6_plen); + /* Use the SEND socket */ + error = send_sendso_input_hook(m, ifp, SND_OUT, + ip6len); + /* -1 == no app on SEND socket */ + if (error == 0 || error != -1) + return (error); + } + } + /* * We were passed in a pointer to an lle with the lock held * this means that we can't call if_output as we will |
