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Fix dereferencing of type-punned pointer

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Fixes #897
This commit is contained in:
Martin Lenders 2014-03-24 14:34:55 +00:00
parent c0846fde22
commit d9fdbca9de
1 changed files with 6 additions and 5 deletions
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11
sys/net/network_layer/sixlowpan/mac.c
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@ -54,12 +54,13 @@ msg_t msg_q[RADIO_RCV_BUF_SIZE];
uint8_t lowpan_mac_buf[PAYLOAD_SIZE];
static uint8_t macdsn;
static inline void mac_short_to_eui64(net_if_eui64_t *eui64,
uint16_t short_addr)
static inline void mac_frame_short_to_eui64(net_if_eui64_t *eui64,
uint8_t *frame_short)
{
eui64->uint32[0] = HTONL(0x000000ff);
eui64->uint16[2] = HTONS(0xfe00);
eui64->uint16[3] = LETONS(short_addr);
eui64->uint8[6] = frame_short[1];
eui64->uint8[7] = frame_short[0];
}
void recv_ieee802154_frame(void)
@ -129,7 +130,7 @@ void recv_ieee802154_frame(void)
#endif
if (frame.fcf.src_addr_m == IEEE_802154_SHORT_ADDR_M) {
mac_short_to_eui64(&src, *((uint16_t *)frame.src_addr));
mac_frame_short_to_eui64(&src, frame.src_addr);
}
else if (frame.fcf.src_addr_m == IEEE_802154_LONG_ADDR_M) {
memcpy(&src, frame.src_addr, 8);
@ -140,7 +141,7 @@ void recv_ieee802154_frame(void)
}
if (frame.fcf.dest_addr_m == IEEE_802154_SHORT_ADDR_M) {
mac_short_to_eui64(&dst, *((uint16_t *)frame.dest_addr));
mac_frame_short_to_eui64(&dst, frame.dest_addr);
}
else if (frame.fcf.dest_addr_m == IEEE_802154_LONG_ADDR_M) {
memcpy(&dst, frame.dest_addr, 8);