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lowpan6: fixed compiler warning when casting u16_t to u8_t

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goldsimon 2016-02-23 11:28:54 +01:00
parent e4457335b8
commit a5ac41c203
1 changed files with 9 additions and 2 deletions
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11
src/netif/lowpan6.c
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@ -453,6 +453,12 @@ lowpan6_frag(struct netif *netif, struct pbuf *p, const struct ieee_802154_addr
/* Calculate remaining packet length */
remaining_len = p->tot_len;
if (remaining_len > 0x7FF) {
/* datagram_size must fit into 11 bit */
pbuf_free(p_frag);
return ERR_VAL;
}
/* Fragment, or 1 packet? */
if (remaining_len > (127 - ieee_header_len - lowpan6_header_len - 3)) { /* 127 - header - 1 byte dispatch - 2 bytes CRC */
/* We must move the 6LowPAN header to make room for the FRAG header. */
@ -496,11 +502,12 @@ lowpan6_frag(struct netif *netif, struct pbuf *p, const struct ieee_802154_addr
buffer[ieee_header_len] |= 0x20; /* Change FRAG1 to FRAGN */
buffer[ieee_header_len + 4] = datagram_offset >> 3; /* datagram offset in FRAGN header */
buffer[ieee_header_len + 4] = (u8_t)(datagram_offset >> 3); /* datagram offset in FRAGN header (datagram_offset is max. 11 bit) */
frag_len = (127 - ieee_header_len - 5 - 2) & 0xf8;
if (frag_len > remaining_len)
if (frag_len > remaining_len) {
frag_len = remaining_len;
}
pbuf_copy_partial(p, buffer + ieee_header_len + 5, frag_len, p->tot_len - remaining_len);
remaining_len -= frag_len;