giomba/nes-proj
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

removed old HC1 code since it is not expected to be used and removed NH_COMPRESSOR

Browse Source
This commit is contained in:
Joakim Eriksson 2015-09-18 09:25:42 +02:00
parent d4dc45e096
commit 02e07607a7
1 changed files with 0 additions and 273 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

273
core/net/ipv6/sicslowpan.c
View File

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