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Allow the 6lowpan code to handle packets larger than 256 bytes

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This commit is contained in:
Adam Dunkels 2013-11-16 14:44:14 +01:00
parent bec721d313
commit f26e35cffa
1 changed files with 9 additions and 7 deletions
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16
core/net/sicslowpan.c
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@ -200,7 +200,7 @@ static uint8_t rime_hdr_len;
* headers (can be the IP payload if the IP header only is compressed * headers (can be the IP payload if the IP header only is compressed
* or the UDP payload if the UDP header is also compressed) * or the UDP payload if the UDP header is also compressed)
*/ */
static uint8_t rime_payload_len; static int rime_payload_len;
/** /**
* uncomp_hdr_len is the length of the headers before compression (if HC2 * uncomp_hdr_len is the length of the headers before compression (if HC2
@ -999,9 +999,10 @@ uncompress_hdr_hc06(uint16_t ip_len)
/* IP length field. */ /* IP length field. */
if(ip_len == 0) { if(ip_len == 0) {
int len = packetbuf_datalen() - rime_hdr_len + uncomp_hdr_len - UIP_IPH_LEN;
/* This is not a fragmented packet */ /* This is not a fragmented packet */
SICSLOWPAN_IP_BUF->len[0] = 0; SICSLOWPAN_IP_BUF->len[0] = len >> 8;
SICSLOWPAN_IP_BUF->len[1] = packetbuf_datalen() - rime_hdr_len + uncomp_hdr_len - UIP_IPH_LEN; SICSLOWPAN_IP_BUF->len[1] = len & 0x00FF;
} else { } else {
/* This is a 1st fragment */ /* This is a 1st fragment */
SICSLOWPAN_IP_BUF->len[0] = (ip_len - UIP_IPH_LEN) >> 8; SICSLOWPAN_IP_BUF->len[0] = (ip_len - UIP_IPH_LEN) >> 8;
@ -1246,9 +1247,10 @@ uncompress_hdr_hc1(uint16_t ip_len)
/* IP length field. */ /* IP length field. */
if(ip_len == 0) { if(ip_len == 0) {
int len = packetbuf_datalen() - rime_hdr_len + uncomp_hdr_len - UIP_IPH_LEN;
/* This is not a fragmented packet */ /* This is not a fragmented packet */
SICSLOWPAN_IP_BUF->len[0] = 0; SICSLOWPAN_IP_BUF->len[0] = len >> 8;
SICSLOWPAN_IP_BUF->len[1] = packetbuf_datalen() - rime_hdr_len + uncomp_hdr_len - UIP_IPH_LEN; SICSLOWPAN_IP_BUF->len[1] = len & 0x00FF;
} else { } else {
/* This is a 1st fragment */ /* This is a 1st fragment */
SICSLOWPAN_IP_BUF->len[0] = (ip_len - UIP_IPH_LEN) >> 8; SICSLOWPAN_IP_BUF->len[0] = (ip_len - UIP_IPH_LEN) >> 8;
@ -1480,7 +1482,7 @@ output(uip_lladdr_t *localdest)
/* Copy payload and send */ /* Copy payload and send */
rime_hdr_len += SICSLOWPAN_FRAG1_HDR_LEN; rime_hdr_len += SICSLOWPAN_FRAG1_HDR_LEN;
rime_payload_len = (MAC_MAX_PAYLOAD - framer_hdrlen - rime_hdr_len) & 0xf8; rime_payload_len = (MAC_MAX_PAYLOAD - framer_hdrlen - rime_hdr_len) & 0xfffffff8;
PRINTFO("(len %d, tag %d)\n", rime_payload_len, my_tag); PRINTFO("(len %d, tag %d)\n", rime_payload_len, my_tag);
memcpy(rime_ptr + rime_hdr_len, memcpy(rime_ptr + rime_hdr_len,
(uint8_t *)UIP_IP_BUF + uncomp_hdr_len, rime_payload_len); (uint8_t *)UIP_IP_BUF + uncomp_hdr_len, rime_payload_len);
@ -1516,7 +1518,7 @@ output(uip_lladdr_t *localdest)
/* uip_htons((SICSLOWPAN_DISPATCH_FRAGN << 8) | uip_len); */ /* uip_htons((SICSLOWPAN_DISPATCH_FRAGN << 8) | uip_len); */
SET16(RIME_FRAG_PTR, RIME_FRAG_DISPATCH_SIZE, SET16(RIME_FRAG_PTR, RIME_FRAG_DISPATCH_SIZE,
((SICSLOWPAN_DISPATCH_FRAGN << 8) | uip_len)); ((SICSLOWPAN_DISPATCH_FRAGN << 8) | uip_len));
rime_payload_len = (MAC_MAX_PAYLOAD - framer_hdrlen - rime_hdr_len) & 0xf8; rime_payload_len = (MAC_MAX_PAYLOAD - framer_hdrlen - rime_hdr_len) & 0xfffffff8;
while(processed_ip_out_len < uip_len) { while(processed_ip_out_len < uip_len) {
PRINTFO("sicslowpan output: fragment "); PRINTFO("sicslowpan output: fragment ");
RIME_FRAG_PTR[RIME_FRAG_OFFSET] = processed_ip_out_len >> 3; RIME_FRAG_PTR[RIME_FRAG_OFFSET] = processed_ip_out_len >> 3;