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6loWPAN: Fix breakage in IPv6 dispatch caused by fixes to HC1 dispatch; Move some standard definitions from internal header file to include/nuttx/net/sixlowpan.h. Update a README.
This commit is contained in:
Gregory Nutt
@@ -63,6 +63,83 @@
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* Pre-processor Definitions
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****************************************************************************/
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/* Frame format definitions *************************************************/
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/* Fragment header.
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*
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* The fragment header is used when the payload is too large to fit in a
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* single IEEE 802.15.4 frame. The fragment header contains three fields:
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* Datagram size, datagram tag and datagram offset.
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*
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* 1. Datagram size describes the total (un-fragmented) payload.
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* 2. Datagram tag identifies the set of fragments and is used to match
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* fragments of the same payload.
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* 3. Datagram offset identifies the fragment’s offset within the un-
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* fragmented payload.
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*
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* The fragment header length is 4 bytes for the first header and 5
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* bytes for all subsequent headers.
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*/
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#define RIME_FRAG_DISPATCH_SIZE 0 /* 16 bit */
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#define RIME_FRAG_TAG 2 /* 16 bit */
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#define RIME_FRAG_OFFSET 4 /* 8 bit */
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/* Define the Rime buffer as a byte array */
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#define RIME_HC1_DISPATCH 0 /* 8 bit */
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#define RIME_HC1_ENCODING 1 /* 8 bit */
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#define RIME_HC1_TTL 2 /* 8 bit */
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#define RIME_HC1_HC_UDP_DISPATCH 0 /* 8 bit */
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#define RIME_HC1_HC_UDP_HC1_ENCODING 1 /* 8 bit */
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#define RIME_HC1_HC_UDP_UDP_ENCODING 2 /* 8 bit */
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#define RIME_HC1_HC_UDP_TTL 3 /* 8 bit */
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#define RIME_HC1_HC_UDP_PORTS 4 /* 8 bit */
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#define RIME_HC1_HC_UDP_CHKSUM 5 /* 16 bit */
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/* These are some definitions of element values used in the FCF. See the
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* IEEE802.15.4 spec for details.
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*/
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#define FRAME802154_FRAMETYPE_SHIFT (0) /* Bits 0-2: Frame type */
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#define FRAME802154_FRAMETYPE_MASK (7 << FRAME802154_FRAMETYPE_SHIFT)
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#define FRAME802154_SECENABLED_SHIFT (3) /* Bit 3: Security enabled */
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#define FRAME802154_FRAMEPENDING_SHIFT (4) /* Bit 4: Frame pending */
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#define FRAME802154_ACKREQUEST_SHIFT (5) /* Bit 5: ACK request */
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#define FRAME802154_PANIDCOMP_SHIFT (6) /* Bit 6: PANID compression */
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/* Bits 7-9: Reserved */
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#define FRAME802154_DSTADDR_SHIFT (2) /* Bits 10-11: Dest address mode */
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#define FRAME802154_DSTADDR_MASK (3 << FRAME802154_DSTADDR_SHIFT)
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#define FRAME802154_VERSION_SHIFT (4) /* Bit 12-13: Frame version */
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#define FRAME802154_VERSION_MASK (3 << FRAME802154_VERSION_SHIFT)
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#define FRAME802154_SRCADDR_SHIFT (6) /* Bits 14-15: Source address mode */
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#define FRAME802154_SRCADDR_MASK (3 << FRAME802154_SRCADDR_SHIFT)
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/* Unshifted values for use in struct frame802154_fcf_s */
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#define FRAME802154_BEACONFRAME (0)
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#define FRAME802154_DATAFRAME (1)
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#define FRAME802154_ACKFRAME (2)
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#define FRAME802154_CMDFRAME (3)
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#define FRAME802154_BEACONREQ (7)
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#define FRAME802154_IEEERESERVED (0)
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#define FRAME802154_NOADDR (0) /* Only valid for ACK or Beacon frames */
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#define FRAME802154_SHORTADDRMODE (2)
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#define FRAME802154_LONGADDRMODE (3)
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#define FRAME802154_NOBEACONS 0x0f
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#define FRAME802154_BROADCASTADDR 0xffff
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#define FRAME802154_BROADCASTPANDID 0xffff
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#define FRAME802154_IEEE802154_2003 (0)
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#define FRAME802154_IEEE802154_2006 (1)
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#define FRAME802154_SECURITY_LEVEL_NONE (0)
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#define FRAME802154_SECURITY_LEVEL_128 (3)
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/* Min and Max compressible UDP ports - HC06 */
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#define SIXLOWPAN_UDP_4_BIT_PORT_MIN 0xf0b0
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@@ -171,9 +248,71 @@
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#define SIXLOWPAN_MAC_STDFRAME 127
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/* Frame buffer helper macros.
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/* Address compressibility test macros **************************************/
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/* Check whether we can compress the IID in address 'a' to 16 bits. This is
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* used for unicast addresses only, and is true if the address is on the
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* format <PREFIX>::0000:00ff:fe00:XXXX
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*
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* The IEEE802.15.4 MAC driver structures includes a list of IOB
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* NOTE: we currently assume 64-bits prefixes
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*/
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/* Check whether we can compress the IID in address 'a' to 16 bits. This is
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* used for unicast addresses only, and is true if the address is on the
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* format <PREFIX>::0000:00ff:fe00:XXXX.
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*
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* NOTE: we currently assume 64-bits prefixes. Big-endian, network order is
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* assumed.
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*/
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#define SIXLOWPAN_IS_IID_16BIT_COMPRESSABLE(a) \
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((((a)[4]) == 0x0000) && (((a)[5]) == HTONS(0x00ff)) && \
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(((a)[6]) == 0xfe00))
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/* Check whether the 9-bit group-id of the compressed multicast address is
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* known. It is true if the 9-bit group is the all nodes or all routers
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* group. Parameter 'a' is typed uint8_t *
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*/
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#define SIXLOWPAN_IS_MCASTADDR_DECOMPRESSABLE(a) \
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(((*a & 0x01) == 0) && \
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((*(a + 1) == 0x01) || (*(a + 1) == 0x02)))
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/* Check whether the 112-bit group-id of the multicast address is mappable
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* to a 9-bit group-id. It is true if the group is the all nodes or all
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* routers group:
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*
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* XXXX:0000:0000:0000:0000:0000:0000:0001 All nodes address
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* XXXX:0000:0000:0000:0000:0000:0000:0002 All routers address
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*/
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#define SIXLOWPAN_IS_MCASTADDR_COMPRESSABLE(a) \
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((a)[1] == 0 && (a)[2] == 0 && (a)[3] == 0 && \
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(a)[4] == 0 && (a)[5] == 0 && (a)[6] == 0 && \
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((a)[7] == HTONS(0x0001) || (a)[7] == HTONS(0x0002)))
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/* FFXX:0000:0000:0000:0000:00XX:XXXX:XXXX */
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#define SIXLOWPAN_IS_MCASTADDR_COMPRESSABLE48(a) \
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((a)[1] == 0 && (a)[2] == 0 && (a)[3] == 0 && \
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(a)[4] == 0 && (((a)[5] & HTONS(0xff00)) == 0))
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/* FFXX:0000:0000:0000:0000:0000:00XX:XXXX */
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#define SIXLOWPAN_IS_MCASTADDR_COMPRESSABLE32(a) \
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((a)[1] == 0 && (a)[2] == 0 && (a)[3] == 0 && \
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(a)[4] == 0 && (a)[5] == 0 && ((a)[6] & HTONS(0xff00)) == 0)
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/* FF02:0000:0000:0000:0000:0000:0000:00XX */
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#define SIXLOWPAN_IS_MCASTADDR_COMPRESSABLE8(a) \
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((((a)[0] & HTONS(0x00ff)) == HTONS(0x0002)) && \
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(a)[1] == 0 && (a)[2] == 0 && (a)[3] == 0 && \
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(a)[4] == 0 && (a)[5] == 0 && (a)[6] == 0 && \
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(((a)[7] & HTONS(0xff00)) == 0x0000))
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/* Frame buffer helper macros ***********************************************/
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/* The IEEE802.15.4 MAC driver structures includes a list of IOB
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* structures, i_framelist, containing frames to be sent by the driver or
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* that were received by the driver. The IOB structure is defined in
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* include/nuttx/net/iob.h. The length of data in the IOB is provided by
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