t/gr-ieee802-11
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ofdm_mac: add parameter to strip MAC header from incoming MPDUs

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files
grc/ieee802_11_ofdm_mac.xml
+17 -1
View File
@@ -5,7 +5,7 @@
<key>ieee802_11_ofdm_mac</key> <key>ieee802_11_ofdm_mac</key>
<category>IEEE802.11</category> <category>IEEE802.11</category>
<import>import ieee802_11</import> <import>import ieee802_11</import>
<make>ieee802_11.ofdm_mac($src_mac, $dst_mac, $bss_mac)</make> <make>ieee802_11.ofdm_mac($src_mac, $dst_mac, $bss_mac, $strip_header)</make>
<param> <param>
<name>SRC MAC</name> <name>SRC MAC</name>
@@ -28,6 +28,22 @@
<type>int_vector</type> <type>int_vector</type>
</param> </param>
<param>
<name>Strip header</name>
<key>strip_header</key>
<value>False</value>
<type>bool</type>
<option>
<name>Yes</name>
<key>True</key>
</option>
<option>
<name>No</name>
<key>False</key>
</option>
</param>
<check>len($src_mac) == 6</check> <check>len($src_mac) == 6</check>
<check>len($dst_mac) == 6</check> <check>len($dst_mac) == 6</check>
<check>len($bss_mac) == 6</check> <check>len($bss_mac) == 6</check>
include/ieee802-11/ofdm_mac.h
+2 -1
View File
@@ -30,7 +30,8 @@ public:
typedef boost::shared_ptr<ofdm_mac> sptr; typedef boost::shared_ptr<ofdm_mac> sptr;
static sptr make(std::vector<uint8_t> src_mac, static sptr make(std::vector<uint8_t> src_mac,
std::vector<uint8_t> dst_mac, std::vector<uint8_t> dst_mac,
std::vector<uint8_t> bss_mac); std::vector<uint8_t> bss_mac,
bool strip_header);
}; };
} // namespace ieee802_11 } // namespace ieee802_11
lib/ofdm_mac.cc
+19 -4
View File
@@ -38,11 +38,12 @@ class ofdm_mac_impl : public ofdm_mac {
public: 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", block("ofdm_mac",
gr::io_signature::make(0, 0, 0), gr::io_signature::make(0, 0, 0),
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("phy out"));
message_port_register_out(pmt::mp("app 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) { 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); message_port_pub(pmt::mp("app out"), msg);
} }
@@ -161,10 +175,11 @@ private:
uint8_t d_src_mac[6]; uint8_t d_src_mac[6];
uint8_t d_dst_mac[6]; uint8_t d_dst_mac[6];
uint8_t d_bss_mac[6]; uint8_t d_bss_mac[6];
bool d_strip_header;
}; };
ofdm_mac::sptr ofdm_mac::sptr
ofdm_mac::make(std::vector<uint8_t> src_mac, std::vector<uint8_t> dst_mac, std::vector<uint8_t> 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)); return gnuradio::get_initial_sptr(new ofdm_mac_impl(src_mac, dst_mac, bss_mac, strip_header));
} }