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-rw-r--r--net/6lowpan/iphc.c88
-rw-r--r--net/6lowpan/nhc_udp.c22
-rw-r--r--net/ieee802154/6lowpan/tx.c3
3 files changed, 112 insertions, 1 deletions
diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c
index afe36aab04ca..fcf583fe6791 100644
--- a/net/6lowpan/iphc.c
+++ b/net/6lowpan/iphc.c
@@ -58,6 +58,94 @@
#include "nhc.h"
+/* Values of fields within the IPHC encoding first byte
+ * (C stands for compressed and I for inline)
+ */
+#define LOWPAN_IPHC_TF 0x18
+
+#define LOWPAN_IPHC_FL_C 0x10
+#define LOWPAN_IPHC_TC_C 0x08
+#define LOWPAN_IPHC_NH_C 0x04
+#define LOWPAN_IPHC_TTL_1 0x01
+#define LOWPAN_IPHC_TTL_64 0x02
+#define LOWPAN_IPHC_TTL_255 0x03
+#define LOWPAN_IPHC_TTL_I 0x00
+
+/* Values of fields within the IPHC encoding second byte */
+#define LOWPAN_IPHC_CID 0x80
+
+#define LOWPAN_IPHC_ADDR_00 0x00
+#define LOWPAN_IPHC_ADDR_01 0x01
+#define LOWPAN_IPHC_ADDR_02 0x02
+#define LOWPAN_IPHC_ADDR_03 0x03
+
+#define LOWPAN_IPHC_SAC 0x40
+#define LOWPAN_IPHC_SAM 0x30
+
+#define LOWPAN_IPHC_SAM_BIT 4
+
+#define LOWPAN_IPHC_M 0x08
+#define LOWPAN_IPHC_DAC 0x04
+#define LOWPAN_IPHC_DAM_00 0x00
+#define LOWPAN_IPHC_DAM_01 0x01
+#define LOWPAN_IPHC_DAM_10 0x02
+#define LOWPAN_IPHC_DAM_11 0x03
+
+#define LOWPAN_IPHC_DAM_BIT 0
+
+/* ipv6 address based on mac
+ * second bit-flip (Universe/Local) is done according RFC2464
+ */
+#define is_addr_mac_addr_based(a, m) \
+ ((((a)->s6_addr[8]) == (((m)[0]) ^ 0x02)) && \
+ (((a)->s6_addr[9]) == (m)[1]) && \
+ (((a)->s6_addr[10]) == (m)[2]) && \
+ (((a)->s6_addr[11]) == (m)[3]) && \
+ (((a)->s6_addr[12]) == (m)[4]) && \
+ (((a)->s6_addr[13]) == (m)[5]) && \
+ (((a)->s6_addr[14]) == (m)[6]) && \
+ (((a)->s6_addr[15]) == (m)[7]))
+
+/* check whether we can compress the IID to 16 bits,
+ * it's possible for unicast addresses with first 49 bits are zero only.
+ */
+#define lowpan_is_iid_16_bit_compressable(a) \
+ ((((a)->s6_addr16[4]) == 0) && \
+ (((a)->s6_addr[10]) == 0) && \
+ (((a)->s6_addr[11]) == 0xff) && \
+ (((a)->s6_addr[12]) == 0xfe) && \
+ (((a)->s6_addr[13]) == 0))
+
+/* check whether the 112-bit gid of the multicast address is mappable to: */
+
+/* 48 bits, FFXX::00XX:XXXX:XXXX */
+#define lowpan_is_mcast_addr_compressable48(a) \
+ ((((a)->s6_addr16[1]) == 0) && \
+ (((a)->s6_addr16[2]) == 0) && \
+ (((a)->s6_addr16[3]) == 0) && \
+ (((a)->s6_addr16[4]) == 0) && \
+ (((a)->s6_addr[10]) == 0))
+
+/* 32 bits, FFXX::00XX:XXXX */
+#define lowpan_is_mcast_addr_compressable32(a) \
+ ((((a)->s6_addr16[1]) == 0) && \
+ (((a)->s6_addr16[2]) == 0) && \
+ (((a)->s6_addr16[3]) == 0) && \
+ (((a)->s6_addr16[4]) == 0) && \
+ (((a)->s6_addr16[5]) == 0) && \
+ (((a)->s6_addr[12]) == 0))
+
+/* 8 bits, FF02::00XX */
+#define lowpan_is_mcast_addr_compressable8(a) \
+ ((((a)->s6_addr[1]) == 2) && \
+ (((a)->s6_addr16[1]) == 0) && \
+ (((a)->s6_addr16[2]) == 0) && \
+ (((a)->s6_addr16[3]) == 0) && \
+ (((a)->s6_addr16[4]) == 0) && \
+ (((a)->s6_addr16[5]) == 0) && \
+ (((a)->s6_addr16[6]) == 0) && \
+ (((a)->s6_addr[14]) == 0))
+
static inline void iphc_uncompress_eui64_lladdr(struct in6_addr *ipaddr,
const void *lladdr)
{
diff --git a/net/6lowpan/nhc_udp.c b/net/6lowpan/nhc_udp.c
index 72d0b57eb6e5..69537a2eaab1 100644
--- a/net/6lowpan/nhc_udp.c
+++ b/net/6lowpan/nhc_udp.c
@@ -17,7 +17,27 @@
#include "nhc.h"
-#define LOWPAN_NHC_UDP_IDLEN 1
+#define LOWPAN_NHC_UDP_MASK 0xF8
+#define LOWPAN_NHC_UDP_ID 0xF0
+#define LOWPAN_NHC_UDP_IDLEN 1
+
+#define LOWPAN_NHC_UDP_4BIT_PORT 0xF0B0
+#define LOWPAN_NHC_UDP_4BIT_MASK 0xFFF0
+#define LOWPAN_NHC_UDP_8BIT_PORT 0xF000
+#define LOWPAN_NHC_UDP_8BIT_MASK 0xFF00
+
+/* values for port compression, _with checksum_ ie bit 5 set to 0 */
+
+/* all inline */
+#define LOWPAN_NHC_UDP_CS_P_00 0xF0
+/* source 16bit inline, dest = 0xF0 + 8 bit inline */
+#define LOWPAN_NHC_UDP_CS_P_01 0xF1
+/* source = 0xF0 + 8bit inline, dest = 16 bit inline */
+#define LOWPAN_NHC_UDP_CS_P_10 0xF2
+/* source & dest = 0xF0B + 4bit inline */
+#define LOWPAN_NHC_UDP_CS_P_11 0xF3
+/* checksum elided */
+#define LOWPAN_NHC_UDP_CS_C 0x04
static int udp_uncompress(struct sk_buff *skb, size_t needed)
{
diff --git a/net/ieee802154/6lowpan/tx.c b/net/ieee802154/6lowpan/tx.c
index 2a5b2c2b922b..f6594a87d6fc 100644
--- a/net/ieee802154/6lowpan/tx.c
+++ b/net/ieee802154/6lowpan/tx.c
@@ -14,6 +14,9 @@
#include "6lowpan_i.h"
+#define LOWPAN_FRAG1_HEAD_SIZE 0x4
+#define LOWPAN_FRAGN_HEAD_SIZE 0x5
+
/* don't save pan id, it's intra pan */
struct lowpan_addr {
u8 mode;