diff options
| author | brooks <brooks@FreeBSD.org> | 2002-02-26 02:19:33 +0000 |
|---|---|---|
| committer | brooks <brooks@FreeBSD.org> | 2002-02-26 02:19:33 +0000 |
| commit | 15d7d34bd9f9f046360391c8a3fa0a68f546dd81 (patch) | |
| tree | 221b52bd402617ce92a14cadf0084df56951ad8d /sys/net | |
| parent | ecdaec0ea7a59257dfbdd719d35276bc28ed4a45 (diff) | |
| download | FreeBSD-src-15d7d34bd9f9f046360391c8a3fa0a68f546dd81.zip FreeBSD-src-15d7d34bd9f9f046360391c8a3fa0a68f546dd81.tar.gz | |
When using hardware decoding, reconstruct the wire form of the ethernet
header and push it up any attached bpf devices on the parent interface.
This makes hardware vlan decoding more like the normal software path.
Tested by: cjtt@employees.org
MFC after: 2 weeks
Diffstat (limited to 'sys/net')
| -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 8512752..759ae81 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 |
