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-rw-r--r--host/lib/usrp/usrp2/fw_common.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/host/lib/usrp/usrp2/fw_common.h b/host/lib/usrp/usrp2/fw_common.h
index 75f5b1779..242d268ec 100644
--- a/host/lib/usrp/usrp2/fw_common.h
+++ b/host/lib/usrp/usrp2/fw_common.h
@@ -32,9 +32,13 @@ extern "C" {
#define _SINS_
#endif
+// define limits on bytes per udp packet
+#define USRP2_MTU_BYTES 1500
+#define USRP2_UDP_BYTES ((USRP2_MTU_BYTES) - (2 + 14 + 20 + 8)) //size of headers (pad, eth, ip, udp)
+
//defines the protocol version in this shared header
//increment this value when the protocol is changed
-#define USRP2_PROTO_VERSION 3
+#define USRP2_PROTO_VERSION 4
//used to differentiate control packets over data port
#define USRP2_INVALID_VRT_HEADER 0
@@ -102,7 +106,7 @@ typedef struct{
struct {
_SINS_ uint8_t addr;
_SINS_ uint8_t bytes;
- _SINS_ uint8_t data[sizeof(_SINS_ uint32_t)];
+ _SINS_ uint8_t data[20];
} i2c_args;
struct {
_SINS_ uint32_t addr;