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added random init of sequence number

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This commit is contained in:
nifi 2010-03-01 13:17:01 +00:00
parent feb6aa0ed2
commit 0c084b8c68
1 changed files with 12 additions and 5 deletions
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17
core/net/mac/framer-802154.c
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@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: framer-802154.c,v 1.3 2010/02/18 21:00:28 adamdunkels Exp $
* $Id: framer-802154.c,v 1.4 2010/03/01 13:17:01 nifi Exp $
*/
/**
@ -40,6 +40,7 @@
#include "net/mac/framer-802154.h"
#include "net/mac/frame802154.h"
#include "net/rime/packetbuf.h"
#include "lib/random.h"
#include <string.h>
#define DEBUG 0
@ -54,6 +55,7 @@
#endif
static uint8_t mac_dsn;
static uint8_t initialized = 0;
const static uint16_t mac_dst_pan_id = IEEE802154_PANID;
const static uint16_t mac_src_pan_id = IEEE802154_PANID;
@ -79,6 +81,11 @@ create(void)
/* init to zeros */
memset(&params, 0, sizeof(params));
if(!initialized) {
initialized = 1;
mac_dsn = random_rand() & 0xff;
}
/* Build the FCF. */
params.fcf.frame_type = FRAME802154_DATAFRAME;
params.fcf.security_enabled = 0;
@ -132,13 +139,13 @@ create(void)
if(packetbuf_hdralloc(len)) {
frame802154_create(&params, packetbuf_hdrptr(), len);
PRINTF("P6MAC-UT: %2X", params.fcf.frame_type);
PRINTF("15.4-OUT: %2X", params.fcf.frame_type);
PRINTADDR(params.dest_addr.u8);
PRINTF("%u %u (%u)\n", len, packetbuf_datalen(), packetbuf_totlen());
return len;
} else {
PRINTF("P6MAC-UT: too large header: %u\n", len);
PRINTF("15.4-OUT: too large header: %u\n", len);
return 0;
}
}
@ -155,7 +162,7 @@ parse(void)
if(frame.dest_pid != mac_src_pan_id &&
frame.dest_pid != FRAME802154_BROADCASTPANDID) {
/* Packet to another PAN */
PRINTF("P6MAC: for another pan %u\n", frame.dest_pid);
PRINTF("15.4: for another pan %u\n", frame.dest_pid);
return 0;
}
if(!is_broadcast_addr(frame.fcf.dest_addr_mode, frame.dest_addr)) {
@ -166,7 +173,7 @@ parse(void)
packetbuf_set_attr(PACKETBUF_ATTR_RELIABLE, frame.fcf.ack_required);
packetbuf_set_attr(PACKETBUF_ATTR_PACKET_ID, frame.seq);
PRINTF("P6MAC-IN: %2X", frame.fcf.frame_type);
PRINTF("15.4-IN: %2X", frame.fcf.frame_type);
PRINTADDR(packetbuf_addr(PACKETBUF_ADDR_SENDER));
PRINTADDR(packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
PRINTF("%u (%u)\n", packetbuf_datalen(), len);