3 * Copyright 2005,2007,2008 Free Software Foundation, Inc.
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 #ifndef INCLUDED_USRP2_PKTFILTER_H
20 #define INCLUDED_USRP2_PKTFILTER_H
27 * \brief Compile programs for the Berkeley Packet Filter
32 unsigned d_len; // # of instructions
33 struct sock_filter *d_inst; // the instructions
39 * \brief Return a filter that harvests packets with the specified ethertype.
40 * \param ethertype the ethertype we're looking for.
42 static pktfilter *make_ethertype (unsigned short ethertype);
45 * \brief Return a filter that harvests inbound packets with the specified ethertype.
46 * \param ethertype the ethertype we're looking for
47 * \param our_mac our MAC address so we can avoid pkts we sent
49 static pktfilter *make_ethertype_inbound (unsigned short ethertype,
50 const unsigned char *our_mac);
53 * \brief Return a filter that harvests inbound packets with the specified ethertype
54 * and source MAC address
55 * \param ethertype the ethertype we're looking for
56 * \param usrp_mac the source MAC address
58 static pktfilter *make_ethertype_inbound_target (unsigned short ethertype,
59 const unsigned char *usrp_mac);
64 #endif /* INCLUDED_USRP2_PKTFILTER_H */