removed old HC1 code since it is not expected to be used and removed NH_COMPRESSOR
This commit is contained in:
Joakim Eriksson
parent
d4dc45e096
commit
02e07607a7
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@ -172,10 +172,6 @@ void uip_log(char *msg);
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/** \name General variables
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/** \name General variables
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* @{
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* @{
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*/
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*/
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#ifdef SICSLOWPAN_NH_COMPRESSOR
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/** A pointer to the additional compressor */
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extern struct sicslowpan_nh_compressor SICSLOWPAN_NH_COMPRESSOR;
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#endif
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/**
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/**
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* A pointer to the packetbuf buffer.
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* A pointer to the packetbuf buffer.
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@ -929,11 +925,6 @@ compress_hdr_iphc(linkaddr_t *link_destaddr)
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}
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}
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#endif /*UIP_CONF_UDP*/
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#endif /*UIP_CONF_UDP*/
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#ifdef SICSLOWPAN_NH_COMPRESSOR
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/* if nothing to compress just return zero */
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hc06_ptr += SICSLOWPAN_NH_COMPRESSOR.compress(hc06_ptr, &uncomp_hdr_len);
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#endif
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/* before the packetbuf_hdr_len operation */
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/* before the packetbuf_hdr_len operation */
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PACKETBUF_IPHC_BUF[0] = iphc0;
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PACKETBUF_IPHC_BUF[0] = iphc0;
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PACKETBUF_IPHC_BUF[1] = iphc1;
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PACKETBUF_IPHC_BUF[1] = iphc1;
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@ -1168,11 +1159,6 @@ uncompress_hdr_iphc(uint8_t *buf, uint16_t ip_len)
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}
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}
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uncomp_hdr_len += UIP_UDPH_LEN;
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uncomp_hdr_len += UIP_UDPH_LEN;
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}
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}
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#ifdef SICSLOWPAN_NH_COMPRESSOR
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else {
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hc06_ptr += SICSLOWPAN_NH_COMPRESSOR.uncompress(hc06_ptr, sicslowpan_buf, &uncomp_hdr_len);
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}
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#endif
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}
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}
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packetbuf_hdr_len = hc06_ptr - packetbuf_ptr;
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packetbuf_hdr_len = hc06_ptr - packetbuf_ptr;
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@ -1199,256 +1185,6 @@ uncompress_hdr_iphc(uint8_t *buf, uint16_t ip_len)
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/** @} */
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/** @} */
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#endif /* SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_HC06 */
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#endif /* SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_HC06 */
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#if SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_HC1
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/*--------------------------------------------------------------------*/
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/** \name HC1 compression and uncompression functions
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* @{ */
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/*--------------------------------------------------------------------*/
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/**
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* \brief Compress IP/UDP header using HC1 and HC_UDP
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*
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* This function is called by the 6lowpan code to create a compressed
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* 6lowpan packet in the packetbuf buffer from a full IPv6 packet in the
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* uip_buf buffer.
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*
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*
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* If we can compress everything, we use HC1 dispatch, if not we use
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* IPv6 dispatch.\n
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* We can compress everything if:
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* - IP version is
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* - Flow label and traffic class are 0
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* - Both src and dest ip addresses are link local
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* - Both src and dest interface ID are recoverable from lower layer
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* header
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* - Next header is either ICMP, UDP or TCP
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*
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* Moreover, if next header is UDP, we try to compress it using HC_UDP.
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* This is feasible is both ports are between F0B0 and F0B0 + 15.
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*
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*
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* Resulting header structure:
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* - For ICMP, TCP, non compressed UDP\n
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* HC1 encoding = 11111010 (UDP) 11111110 (TCP) 11111100 (ICMP)\n
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* \verbatim
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* 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | LoWPAN HC1 Dsp | HC1 encoding | IPv6 Hop limit| L4 hdr + data|
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | ...
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* \endverbatim
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*
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* - For compressed UDP\n
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* HC1 encoding = 11111011, HC_UDP encoding = 11100000\n
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* \verbatim
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* 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | LoWPAN HC1 Dsp| HC1 encoding | HC_UDP encod.| IPv6 Hop limit|
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | src p.| dst p.| UDP checksum | L4 data...
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* \endverbatim
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*
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* \param link_destaddr L2 destination address, needed to compress the
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* IP destination field
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*/
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static void
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compress_hdr_hc1(linkaddr_t *link_destaddr)
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{
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/*
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* Check if all the assumptions for full compression
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* are valid :
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*/
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if(UIP_IP_BUF->vtc != 0x60 ||
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UIP_IP_BUF->tcflow != 0 ||
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UIP_IP_BUF->flow != 0 ||
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!uip_is_addr_linklocal(&UIP_IP_BUF->srcipaddr) ||
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!uip_is_addr_mac_addr_based(&UIP_IP_BUF->srcipaddr, &uip_lladdr) ||
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!uip_is_addr_linklocal(&UIP_IP_BUF->destipaddr) ||
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!uip_is_addr_mac_addr_based(&UIP_IP_BUF->destipaddr,
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(uip_lladdr_t *)link_destaddr) ||
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(UIP_IP_BUF->proto != UIP_PROTO_ICMP6 &&
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UIP_IP_BUF->proto != UIP_PROTO_UDP &&
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UIP_IP_BUF->proto != UIP_PROTO_TCP))
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{
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/*
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* IPV6 DISPATCH
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* Something cannot be compressed, use IPV6 DISPATCH,
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* compress nothing, copy IPv6 header in packetbuf buffer
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*/
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*packetbuf_ptr = SICSLOWPAN_DISPATCH_IPV6;
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packetbuf_hdr_len += SICSLOWPAN_IPV6_HDR_LEN;
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memcpy(packetbuf_ptr + packetbuf_hdr_len, UIP_IP_BUF, UIP_IPH_LEN);
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packetbuf_hdr_len += UIP_IPH_LEN;
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uncomp_hdr_len += UIP_IPH_LEN;
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} else {
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/*
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* HC1 DISPATCH
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* maximum compresssion:
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* All fields in the IP header but Hop Limit are elided
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* If next header is UDP, we compress UDP header using HC2
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*/
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PACKETBUF_HC1_PTR[PACKETBUF_HC1_DISPATCH] = SICSLOWPAN_DISPATCH_HC1;
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uncomp_hdr_len += UIP_IPH_LEN;
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switch(UIP_IP_BUF->proto) {
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case UIP_PROTO_ICMP6:
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/* HC1 encoding and ttl */
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PACKETBUF_HC1_PTR[PACKETBUF_HC1_ENCODING] = 0xFC;
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PACKETBUF_HC1_PTR[PACKETBUF_HC1_TTL] = UIP_IP_BUF->ttl;
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packetbuf_hdr_len += SICSLOWPAN_HC1_HDR_LEN;
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break;
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#if UIP_CONF_TCP
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case UIP_PROTO_TCP:
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/* HC1 encoding and ttl */
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PACKETBUF_HC1_PTR[PACKETBUF_HC1_ENCODING] = 0xFE;
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PACKETBUF_HC1_PTR[PACKETBUF_HC1_TTL] = UIP_IP_BUF->ttl;
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packetbuf_hdr_len += SICSLOWPAN_HC1_HDR_LEN;
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break;
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#endif /* UIP_CONF_TCP */
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#if UIP_CONF_UDP
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case UIP_PROTO_UDP:
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/*
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* try to compress UDP header (we do only full compression).
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* This is feasible if both src and dest ports are between
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* SICSLOWPAN_UDP_PORT_MIN and SICSLOWPAN_UDP_PORT_MIN + 15
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*/
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PRINTF("local/remote port %u/%u\n",UIP_UDP_BUF->srcport,UIP_UDP_BUF->destport);
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if(UIP_HTONS(UIP_UDP_BUF->srcport) >= SICSLOWPAN_UDP_PORT_MIN &&
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UIP_HTONS(UIP_UDP_BUF->srcport) < SICSLOWPAN_UDP_PORT_MAX &&
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UIP_HTONS(UIP_UDP_BUF->destport) >= SICSLOWPAN_UDP_PORT_MIN &&
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UIP_HTONS(UIP_UDP_BUF->destport) < SICSLOWPAN_UDP_PORT_MAX) {
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/* HC1 encoding */
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PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_HC1_ENCODING] = 0xFB;
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/* HC_UDP encoding, ttl, src and dest ports, checksum */
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PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_UDP_ENCODING] = 0xE0;
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PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_TTL] = UIP_IP_BUF->ttl;
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PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_PORTS] =
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(uint8_t)((UIP_HTONS(UIP_UDP_BUF->srcport) -
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SICSLOWPAN_UDP_PORT_MIN) << 4) +
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(uint8_t)((UIP_HTONS(UIP_UDP_BUF->destport) - SICSLOWPAN_UDP_PORT_MIN));
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memcpy(&PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_CHKSUM], &UIP_UDP_BUF->udpchksum, 2);
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packetbuf_hdr_len += SICSLOWPAN_HC1_HC_UDP_HDR_LEN;
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uncomp_hdr_len += UIP_UDPH_LEN;
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} else {
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/* HC1 encoding and ttl */
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PACKETBUF_HC1_PTR[PACKETBUF_HC1_ENCODING] = 0xFA;
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PACKETBUF_HC1_PTR[PACKETBUF_HC1_TTL] = UIP_IP_BUF->ttl;
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packetbuf_hdr_len += SICSLOWPAN_HC1_HDR_LEN;
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}
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break;
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#endif /*UIP_CONF_UDP*/
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}
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}
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return;
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}
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/*--------------------------------------------------------------------*/
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/**
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* \brief Uncompress HC1 (and HC_UDP) headers and put them in
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* sicslowpan_buf
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*
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* This function is called by the input function when the dispatch is
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* HC1.
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* We %process the packet in the packetbuf buffer, uncompress the header
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* fields, and copy the result in the sicslowpan buffer.
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* At the end of the decompression, packetbuf_hdr_len and uncompressed_hdr_len
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* are set to the appropriate values
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*
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* \param ip_len Equal to 0 if the packet is not a fragment (IP length
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* is then inferred from the L2 length), non 0 if the packet is a 1st
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* fragment.
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*/
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static void
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uncompress_hdr_hc1(uint16_t ip_len)
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{
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/* version, traffic class, flow label */
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SICSLOWPAN_IP_BUF->vtc = 0x60;
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SICSLOWPAN_IP_BUF->tcflow = 0;
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SICSLOWPAN_IP_BUF->flow = 0;
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/* src and dest ip addresses */
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uip_ip6addr(&SICSLOWPAN_IP_BUF->srcipaddr, 0xfe80, 0, 0, 0, 0, 0, 0, 0);
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uip_ds6_set_addr_iid(&SICSLOWPAN_IP_BUF->srcipaddr,
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(uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_SENDER));
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uip_ip6addr(&SICSLOWPAN_IP_BUF->destipaddr, 0xfe80, 0, 0, 0, 0, 0, 0, 0);
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uip_ds6_set_addr_iid(&SICSLOWPAN_IP_BUF->destipaddr,
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(uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
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uncomp_hdr_len += UIP_IPH_LEN;
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/* Next header field */
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switch(PACKETBUF_HC1_PTR[PACKETBUF_HC1_ENCODING] & 0x06) {
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case SICSLOWPAN_HC1_NH_ICMP6:
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SICSLOWPAN_IP_BUF->proto = UIP_PROTO_ICMP6;
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SICSLOWPAN_IP_BUF->ttl = PACKETBUF_HC1_PTR[PACKETBUF_HC1_TTL];
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packetbuf_hdr_len += SICSLOWPAN_HC1_HDR_LEN;
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break;
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#if UIP_CONF_TCP
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case SICSLOWPAN_HC1_NH_TCP:
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SICSLOWPAN_IP_BUF->proto = UIP_PROTO_TCP;
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SICSLOWPAN_IP_BUF->ttl = PACKETBUF_HC1_PTR[PACKETBUF_HC1_TTL];
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packetbuf_hdr_len += SICSLOWPAN_HC1_HDR_LEN;
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break;
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#endif/* UIP_CONF_TCP */
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#if UIP_CONF_UDP
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case SICSLOWPAN_HC1_NH_UDP:
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SICSLOWPAN_IP_BUF->proto = UIP_PROTO_UDP;
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if(PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_HC1_ENCODING] & 0x01) {
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/* UDP header is compressed with HC_UDP */
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if(PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_UDP_ENCODING] !=
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SICSLOWPAN_HC_UDP_ALL_C) {
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PRINTF("sicslowpan (uncompress_hdr), packet not supported");
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return;
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}
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/* IP TTL */
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SICSLOWPAN_IP_BUF->ttl = PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_TTL];
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/* UDP ports, len, checksum */
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SICSLOWPAN_UDP_BUF->srcport =
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UIP_HTONS(SICSLOWPAN_UDP_PORT_MIN +
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(PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_PORTS] >> 4));
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SICSLOWPAN_UDP_BUF->destport =
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UIP_HTONS(SICSLOWPAN_UDP_PORT_MIN +
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(PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_PORTS] & 0x0F));
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memcpy(&SICSLOWPAN_UDP_BUF->udpchksum, &PACKETBUF_HC1_HC_UDP_PTR[PACKETBUF_HC1_HC_UDP_CHKSUM], 2);
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uncomp_hdr_len += UIP_UDPH_LEN;
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packetbuf_hdr_len += SICSLOWPAN_HC1_HC_UDP_HDR_LEN;
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} else {
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packetbuf_hdr_len += SICSLOWPAN_HC1_HDR_LEN;
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}
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break;
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#endif/* UIP_CONF_UDP */
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default:
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/* this shouldn't happen, drop */
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return;
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}
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/* IP length field. */
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if(ip_len == 0) {
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int len = packetbuf_datalen() - packetbuf_hdr_len + uncomp_hdr_len - UIP_IPH_LEN;
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/* This is not a fragmented packet */
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SICSLOWPAN_IP_BUF->len[0] = len >> 8;
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SICSLOWPAN_IP_BUF->len[1] = len & 0x00FF;
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} else {
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/* This is a 1st fragment */
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SICSLOWPAN_IP_BUF->len[0] = (ip_len - UIP_IPH_LEN) >> 8;
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SICSLOWPAN_IP_BUF->len[1] = (ip_len - UIP_IPH_LEN) & 0x00FF;
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}
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/* length field in UDP header */
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if(SICSLOWPAN_IP_BUF->proto == UIP_PROTO_UDP) {
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memcpy(&SICSLOWPAN_UDP_BUF->udplen, &SICSLOWPAN_IP_BUF->len[0], 2);
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}
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return;
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}
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/** @} */
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#endif /* SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_HC1 */
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/*--------------------------------------------------------------------*/
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/*--------------------------------------------------------------------*/
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/** \name IPv6 dispatch "compression" function
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/** \name IPv6 dispatch "compression" function
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* @{ */
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* @{ */
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@ -1595,9 +1331,6 @@ output(const uip_lladdr_t *localdest)
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if(uip_len >= COMPRESSION_THRESHOLD) {
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if(uip_len >= COMPRESSION_THRESHOLD) {
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/* Try to compress the headers */
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/* Try to compress the headers */
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#if SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_HC1
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compress_hdr_hc1(&dest);
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#endif /* SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_HC1 */
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#if SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_IPV6
|
#if SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_IPV6
|
||||||
compress_hdr_ipv6(&dest);
|
compress_hdr_ipv6(&dest);
|
||||||
#endif /* SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_IPV6 */
|
#endif /* SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_IPV6 */
|
||||||
|
|
@ -1880,12 +1613,6 @@ input(void)
|
||||||
} else
|
} else
|
||||||
#endif /* SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_HC06 */
|
#endif /* SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_HC06 */
|
||||||
switch(PACKETBUF_HC1_PTR[PACKETBUF_HC1_DISPATCH]) {
|
switch(PACKETBUF_HC1_PTR[PACKETBUF_HC1_DISPATCH]) {
|
||||||
#if SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_HC1
|
|
||||||
case SICSLOWPAN_DISPATCH_HC1:
|
|
||||||
PRINTFI("sicslowpan input: HC1\n");
|
|
||||||
uncompress_hdr_hc1(frag_size);
|
|
||||||
break;
|
|
||||||
#endif /* SICSLOWPAN_COMPRESSION == SICSLOWPAN_COMPRESSION_HC1 */
|
|
||||||
case SICSLOWPAN_DISPATCH_IPV6:
|
case SICSLOWPAN_DISPATCH_IPV6:
|
||||||
PRINTFI("sicslowpan input: IPV6\n");
|
PRINTFI("sicslowpan input: IPV6\n");
|
||||||
packetbuf_hdr_len += SICSLOWPAN_IPV6_HDR_LEN;
|
packetbuf_hdr_len += SICSLOWPAN_IPV6_HDR_LEN;
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue