diff options
| author |   dlg <dlg@openbsd.org> | 2020-06-21 05:17:15 +0000 |
|---|---|---|
| committer | dlg <dlg@openbsd.org> | 2020-06-21 05:17:15 +0000 |
| commit | 63a788dae37771312ea8081c21a6a4bf68bd1bbb (patch) | |
| tree | 4ef21b23f58d168d98003ae209843e35e8141954 /sys/netinet/udp_usrreq.c | |
| parent | The onboard interfaces on T7/S7 machines don't provide a valid MAC address (diff) | |
| download | wireguard-openbsd-63a788dae37771312ea8081c21a6a4bf68bd1bbb.tar.xz wireguard-openbsd-63a788dae37771312ea8081c21a6a4bf68bd1bbb.zip | |
if an inp_upcall is set, let it look at and maybe steal the udp packet.
i wrote the original version of this, but it was tweaked by Matt
Dunwoodie and Jason A. Donenfeld for use with wireguard.
Diffstat (limited to '')
| -rw-r--r-- | sys/netinet/udp_usrreq.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c index a2cc53a92f8..ee65e5f8d1c 100644 --- a/sys/netinet/udp_usrreq.c +++ b/sys/netinet/udp_usrreq.c @@ -1,4 +1,4 @@ -/* $OpenBSD: udp_usrreq.c,v 1.257 2019/12/06 14:43:14 tobhe Exp $ */ +/* $OpenBSD: udp_usrreq.c,v 1.258 2020/06/21 05:17:15 dlg Exp $ */ /* $NetBSD: udp_usrreq.c,v 1.28 1996/03/16 23:54:03 christos Exp $ */ /* @@ -583,12 +583,20 @@ bad: void udp_sbappend(struct inpcb *inp, struct mbuf *m, struct ip *ip, - struct ip6_hdr *ip6, int iphlen, struct udphdr *uh, + struct ip6_hdr *ip6, int hlen, struct udphdr *uh, struct sockaddr *srcaddr, u_int32_t ipsecflowinfo) { struct socket *so = inp->inp_socket; struct mbuf *opts = NULL; + hlen += sizeof(*uh); + + if (inp->inp_upcall != NULL) { + m = (*inp->inp_upcall)(inp->inp_upcall_arg, m, ip, ip6, uh, hlen); + if (m == NULL) + return; + } + #ifdef INET6 if (ip6 && (inp->inp_flags & IN6P_CONTROLOPTS || so->so_options & SO_TIMESTAMP)) @@ -625,7 +633,7 @@ udp_sbappend(struct inpcb *inp, struct mbuf *m, struct ip *ip, sizeof(u_int32_t), IP_IPSECFLOWINFO, IPPROTO_IP); } #endif - m_adj(m, iphlen + sizeof(struct udphdr)); + m_adj(m, hlen); if (sbappendaddr(so, &so->so_rcv, srcaddr, m, opts) == 0) { udpstat_inc(udps_fullsock); m_freem(m); |