diff options
| author |   mpi <mpi@openbsd.org> | 2017-10-25 09:24:09 +0000 |
|---|---|---|
| committer | mpi <mpi@openbsd.org> | 2017-10-25 09:24:09 +0000 |
| commit | 17d55011419f793414a5f455202e4d90d67f957a (patch) | |
| tree | 29ae21bbf8e9a3139b604d305d619b747cf571b4 /sys/net/if_vxlan.c | |
| parent | tweak the uri text, specifically removing some markup to make it a (diff) | |
| download | wireguard-openbsd-17d55011419f793414a5f455202e4d90d67f957a.tar.xz wireguard-openbsd-17d55011419f793414a5f455202e4d90d67f957a.zip | |
Remove Multicast and Broadcast flags from the encapsulated packet in
vxlan(4) like it is done by other tunnelling pseudo-interfaces.
While here sync the comment between multiple interfaces.
Bug report and original diff from Pierre LALET.
Diffstat (limited to 'sys/net/if_vxlan.c')
| -rw-r--r-- | sys/net/if_vxlan.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/sys/net/if_vxlan.c b/sys/net/if_vxlan.c index c2d296f1681..190b2b880d3 100644 --- a/sys/net/if_vxlan.c +++ b/sys/net/if_vxlan.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_vxlan.c,v 1.62 2017/08/11 21:24:19 mpi Exp $ */ +/* $OpenBSD: if_vxlan.c,v 1.63 2017/10/25 09:24:09 mpi Exp $ */ /* * Copyright (c) 2013 Reyk Floeter <reyk@openbsd.org> @@ -665,7 +665,7 @@ vxlan_lookup(struct mbuf *m, struct udphdr *uh, int iphlen, } #endif - m->m_flags &= ~(M_MCAST|M_BCAST); + m->m_flags &= ~(M_BCAST|M_MCAST); #if NPF > 0 pf_pkt_addr_changed(m); @@ -702,6 +702,12 @@ vxlan_encap4(struct ifnet *ifp, struct mbuf *m, struct vxlan_softc *sc = (struct vxlan_softc *)ifp->if_softc; struct ip *ip; + /* + * Remove multicast and broadcast flags or encapsulated packet + * ends up as multicast or broadcast packet. + */ + m->m_flags &= ~(M_BCAST|M_MCAST); + M_PREPEND(m, sizeof(*ip), M_DONTWAIT); if (m == NULL) return (NULL); @@ -735,6 +741,12 @@ vxlan_encap6(struct ifnet *ifp, struct mbuf *m, struct ip6_hdr *ip6; struct in6_addr *in6a; + /* + * Remove multicast and broadcast flags or encapsulated packet + * ends up as multicast or broadcast packet. + */ + m->m_flags &= ~(M_BCAST|M_MCAST); + M_PREPEND(m, sizeof(struct ip6_hdr), M_DONTWAIT); if (m == NULL) return (NULL); |