doc/doxygen-3.3.0/pktfilter_8h_source.html

00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2005,2007,2008 Free Software Foundation, Inc.
00004  *
00005  * This program is free software: you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License as published by
00007  * the Free Software Foundation, either version 3 of the License, or
00008  * (at your option) any later version.
00009  *
00010  * This program is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  * GNU General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU General Public License
00016  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
00017  */
00018
00019 #ifndef INCLUDED_USRP2_PKTFILTER_H
00020 #define INCLUDED_USRP2_PKTFILTER_H
00021
00022 struct sock_filter;
00023
00024 namespace usrp2 {
00025
00026   /*
00027    * \brief Compile programs for the Berkeley Packet Filter
00028    */
00029   class pktfilter {
00030   public:
00031
00032     unsigned             d_len;         // # of instructions
00033     struct sock_filter  *d_inst;        // the instructions
00034
00035     pktfilter ();
00036     ~pktfilter ();
00037
00038     /*!
00039      * \brief Return a filter that harvests packets with the specified ethertype.
00040      * \param ethertype the ethertype we're looking for.
00041      */
00042     static pktfilter *make_ethertype (unsigned short ethertype);
00043
00044     /*!
00045      * \brief Return a filter that harvests inbound packets with the specified ethertype.
00046      * \param ethertype the ethertype we're looking for
00047      * \param our_mac   our MAC address so we can avoid pkts we sent
00048      */
00049     static pktfilter *make_ethertype_inbound (unsigned short ethertype,
00050                                               const unsigned char *our_mac);
00051
00052     /*!
00053      * \brief Return a filter that harvests inbound packets with the specified ethertype
00054      *        and source MAC address
00055      * \param ethertype the ethertype we're looking for
00056      * \param usrp_mac  the source MAC address
00057      */
00058     static pktfilter *make_ethertype_inbound_target (unsigned short ethertype,
00059                                                      const unsigned char *usrp_mac);
00060   };
00061
00062 } // namespace usrp2
00063
00064 #endif /* INCLUDED_USRP2_PKTFILTER_H */