diff options
Diffstat (limited to 'sys/net/if_vlan.c')
| -rw-r--r-- | sys/net/if_vlan.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sys/net/if_vlan.c b/sys/net/if_vlan.c index 851275227e77..759ae81be5c8 100644 --- a/sys/net/if_vlan.c +++ b/sys/net/if_vlan.c @@ -401,6 +401,26 @@ vlan_input_tag(struct ether_header *eh, struct mbuf *m, u_int16_t t) { struct ifvlan *ifv; + /* + * Fake up a header and send the packet to the physical interface's + * bpf tap if active. + */ + if (m->m_pkthdr.rcvif->if_bpf != NULL) { + struct m_hdr mh; + struct ether_vlan_header evh; + + bcopy(eh, &evh, 2*ETHER_ADDR_LEN); + evh.evl_encap_proto = htons(ETHERTYPE_VLAN); + evh.evl_tag = htons(t); + evh.evl_proto = eh->ether_type; + + /* This kludge is OK; BPF treats the "mbuf" as read-only */ + mh.mh_next = m; + mh.mh_data = (char *)&evh; + mh.mh_len = ETHER_HDR_LEN + EVL_ENCAPLEN; + bpf_mtap(m->m_pkthdr.rcvif, (struct mbuf *)&mh); + } + for (ifv = LIST_FIRST(&ifv_list); ifv != NULL; ifv = LIST_NEXT(ifv, ifv_list)) { if (m->m_pkthdr.rcvif == ifv->ifv_p |