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ofdm_mac: add parameter to strip MAC header from incoming MPDUs

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This commit is contained in:
Andre Puschmann
2015-04-08 09:27:40 +02:00
parent 3df4fd3d31
commit 28cbfd8c9c
3 changed files with 38 additions and 6 deletions
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lib/ofdm_mac.cc
+19 -4
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@@ -38,11 +38,12 @@ class ofdm_mac_impl : public ofdm_mac {
public:
ofdm_mac_impl(std::vector<uint8_t> src_mac, std::vector<uint8_t> dst_mac, std::vector<uint8_t> bss_mac) :
ofdm_mac_impl(std::vector<uint8_t> src_mac, std::vector<uint8_t> dst_mac, std::vector<uint8_t> bss_mac, bool strip_header) :
block("ofdm_mac",
gr::io_signature::make(0, 0, 0),
gr::io_signature::make(0, 0, 0)),
d_seq_nr(0) {
d_seq_nr(0),
d_strip_header(strip_header) {
message_port_register_out(pmt::mp("phy out"));
message_port_register_out(pmt::mp("app out"));
@@ -65,6 +66,19 @@ ofdm_mac_impl(std::vector<uint8_t> src_mac, std::vector<uint8_t> dst_mac, std::v
}
void phy_in (pmt::pmt_t msg) {
if (d_strip_header) {
// this must be a pair
if (!pmt::is_blob(pmt::cdr(msg)))
throw std::runtime_error("PMT must be blob");
// strip MAC header and only leave PHY blob
pmt::pmt_t blob(pmt::cdr(msg));
const char *mpdu = reinterpret_cast<const char *>(pmt::blob_data(blob));
pmt::pmt_t msdu = pmt::make_blob(mpdu + 24, pmt::blob_length(blob) - 24);
// update original msg, note that the fcs is still there
pmt::set_cdr(msg, msdu);
}
message_port_pub(pmt::mp("app out"), msg);
}
@@ -161,10 +175,11 @@ private:
uint8_t d_src_mac[6];
uint8_t d_dst_mac[6];
uint8_t d_bss_mac[6];
bool d_strip_header;
};
ofdm_mac::sptr
ofdm_mac::make(std::vector<uint8_t> src_mac, std::vector<uint8_t> dst_mac, std::vector<uint8_t> bss_mac) {
return gnuradio::get_initial_sptr(new ofdm_mac_impl(src_mac, dst_mac, bss_mac));
ofdm_mac::make(std::vector<uint8_t> src_mac, std::vector<uint8_t> dst_mac, std::vector<uint8_t> bss_mac, bool strip_header) {
return gnuradio::get_initial_sptr(new ofdm_mac_impl(src_mac, dst_mac, bss_mac, strip_header));
}