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-rw-r--r--host/lib/usrp/usrp2/usrp2_iface.cpp13
1 files changed, 7 insertions, 6 deletions
diff --git a/host/lib/usrp/usrp2/usrp2_iface.cpp b/host/lib/usrp/usrp2/usrp2_iface.cpp
index e43b9678e..e12c84d45 100644
--- a/host/lib/usrp/usrp2/usrp2_iface.cpp
+++ b/host/lib/usrp/usrp2/usrp2_iface.cpp
@@ -146,18 +146,19 @@ public:
_ctrl_transport->send(boost::asio::buffer(&out_copy, sizeof(usrp2_ctrl_data_t)));
//loop until we get the packet or timeout
+ boost::uint8_t usrp2_ctrl_data_in_mem[1500]; //allocate MTU bytes for recv
+ usrp2_ctrl_data_t *ctrl_data_in = reinterpret_cast<usrp2_ctrl_data_t *>(usrp2_ctrl_data_in_mem);
while(true){
- usrp2_ctrl_data_t in_data;
- size_t len = _ctrl_transport->recv(boost::asio::buffer(&in_data, sizeof(in_data)));
- if(len >= sizeof(boost::uint32_t) and ntohl(in_data.proto_ver) != USRP2_PROTO_VERSION){
+ size_t len = _ctrl_transport->recv(boost::asio::buffer(usrp2_ctrl_data_in_mem));
+ if(len >= sizeof(boost::uint32_t) and ntohl(ctrl_data_in->proto_ver) != USRP2_PROTO_VERSION){
throw std::runtime_error(str(
boost::format("Expected protocol version %d, but got %d\n"
"The firmware build does not match the host code build."
- ) % int(USRP2_PROTO_VERSION) % ntohl(in_data.proto_ver)
+ ) % int(USRP2_PROTO_VERSION) % ntohl(ctrl_data_in->proto_ver)
));
}
- if (len >= sizeof(usrp2_ctrl_data_t) and ntohl(in_data.seq) == _ctrl_seq_num){
- return in_data;
+ if (len >= sizeof(usrp2_ctrl_data_t) and ntohl(ctrl_data_in->seq) == _ctrl_seq_num){
+ return *ctrl_data_in;
}
if (len == 0) break; //timeout
//didnt get seq or bad packet, continue looking...