diff options
Diffstat (limited to 'sys/net/bpf.c')
| -rw-r--r-- | sys/net/bpf.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sys/net/bpf.c b/sys/net/bpf.c index c282dcf..c06312e 100644 --- a/sys/net/bpf.c +++ b/sys/net/bpf.c @@ -1227,6 +1227,50 @@ bpf_mtap(bp, m) } /* + * Incoming linkage from device drivers, when packet is in + * an mbuf chain and to be prepended by a contiguous header. + */ +void +bpf_mtap2(bp, data, dlen, m) + struct bpf_if *bp; + void *data; + u_int dlen; + struct mbuf *m; +{ + struct mbuf mb; + struct bpf_d *d; + u_int pktlen, slen; + + pktlen = m_length(m, NULL); + /* + * Craft on-stack mbuf suitable for passing to bpf_filter. + * Note that we cut corners here; we only setup what's + * absolutely needed--this mbuf should never go anywhere else. + */ + mb.m_next = m; + mb.m_data = data; + mb.m_len = dlen; + pktlen += dlen; + + BPFIF_LOCK(bp); + for (d = bp->bif_dlist; d != 0; d = d->bd_next) { + if (!d->bd_seesent && (m->m_pkthdr.rcvif == NULL)) + continue; + BPFD_LOCK(d); + ++d->bd_rcount; + slen = bpf_filter(d->bd_filter, (u_char *)&mb, pktlen, 0); + if (slen != 0) +#ifdef MAC + if (mac_check_bpfdesc_receive(d, bp->bif_ifp) == 0) +#endif + catchpacket(d, (u_char *)&mb, pktlen, slen, + bpf_mcopy); + BPFD_UNLOCK(d); + } + BPFIF_UNLOCK(bp); +} + +/* * Move the packet data from interface memory (pkt) into the * store buffer. Return 1 if it's time to wakeup a listener (buffer full), * otherwise 0. "copy" is the routine called to do the actual data @@ -1580,6 +1624,15 @@ bpf_mtap(bp, m) } void +bpf_mtap2(bp, d, l, m) + struct bpf_if *bp; + const void *d; + u_int l; + struct mbuf *m; +{ +} + +void bpfattach(ifp, dlt, hdrlen) struct ifnet *ifp; u_int dlt, hdrlen; |
