/** @file @brief 6lowpan private header This is not to be included by the application. */ /* * Copyright (c) 2016 Intel Corporation * * SPDX-License-Identifier: Apache-2.0 */ #include /* 6lopan dispatches */ #define NET_6LO_DISPATCH_IPV6 0x41 /* 01000001 */ #define NET_6LO_DISPATCH_BROADCAST 0x50 /* 01010000 */ #define NET_6LO_DISPATCH_IPHC 0x60 /* 01100000 */ #define NET_6LO_DISPATCH_MESH 0x80 /* 10xxxxxx */ #define NET_6LO_DISPATCH_FRAG1 0xC0 /* 11000xxx */ #define NET_6LO_DISPATCH_FRAGN 0xE0 /* 11100xxx */ #define NET_6LO_DISPATCH_IPHC_MASK 0xE0 /** * TF (Traffic class and Flow label) * 00: ECN + DSCP + 4-bit Pad + Flow Label (4 bytes) * 01: ECN + 2-bit Pad + Flow Label (3 bytes), DSCP is elided. * 10: ECN + DSCP (1 byte), Flow Label is elided. * 11: Traffic Class and Flow Label are elided. */ #define NET_6LO_IPHC_TF_POS 11 #define NET_6LO_IPHC_TF_MASK (0x03 << NET_6LO_IPHC_TF_POS) #define NET_6LO_IPHC_TF_00 (0x00 << NET_6LO_IPHC_TF_POS) #define NET_6LO_IPHC_TF_01 (0x01 << NET_6LO_IPHC_TF_POS) #define NET_6LO_IPHC_TF_10 (0x02 << NET_6LO_IPHC_TF_POS) #define NET_6LO_IPHC_TF_11 (0x03 << NET_6LO_IPHC_TF_POS) /* NH (next header) */ #define NET_6LO_IPHC_NH_POS 10 #define NET_6LO_IPHC_NH_MASK (0x01 << NET_6LO_IPHC_NH_POS) #define NET_6LO_IPHC_NH_0 (0x00 << NET_6LO_IPHC_NH_POS) #define NET_6LO_IPHC_NH_1 (0x01 << NET_6LO_IPHC_NH_POS) /* HLIM (Hop Limit) */ #define NET_6LO_IPHC_HLIM_POS 8 #define NET_6LO_IPHC_HLIM_MASK (0x03 << NET_6LO_IPHC_HLIM_POS) #define NET_6LO_IPHC_HLIM (0x00 << NET_6LO_IPHC_HLIM_POS) /* 00 */ #define NET_6LO_IPHC_HLIM1 (0x01 << NET_6LO_IPHC_HLIM_POS) /* 01 */ #define NET_6LO_IPHC_HLIM64 (0x02 << NET_6LO_IPHC_HLIM_POS) /* 10 */ #define NET_6LO_IPHC_HLIM255 (0x03 << NET_6LO_IPHC_HLIM_POS) /* 11 */ /* CID (Context Identifier Extension) */ #define NET_6LO_IPHC_CID_POS 7 #define NET_6LO_IPHC_CID_MASK (0x01 << NET_6LO_IPHC_CID_POS) #define NET_6LO_IPHC_CID_0 (0x00 << NET_6LO_IPHC_CID_POS) #define NET_6LO_IPHC_CID_1 (0x01 << NET_6LO_IPHC_CID_POS) /* SAC (Source Address Compression) */ #define NET_6LO_IPHC_SAC_POS 6 #define NET_6LO_IPHC_SAC_MASK (0x01 << NET_6LO_IPHC_SAC_POS) #define NET_6LO_IPHC_SAC_0 (0x00 << NET_6LO_IPHC_SAC_POS) #define NET_6LO_IPHC_SAC_1 (0x01 << NET_6LO_IPHC_SAC_POS) /* SAM (Source Address Mode) */ #define NET_6LO_IPHC_SAM_POS 4 #define NET_6LO_IPHC_SAM_MASK (0x03 << NET_6LO_IPHC_SAM_POS) #define NET_6LO_IPHC_SAM_00 (0x00 << NET_6LO_IPHC_SAM_POS) #define NET_6LO_IPHC_SAM_01 (0x01 << NET_6LO_IPHC_SAM_POS) #define NET_6LO_IPHC_SAM_10 (0x02 << NET_6LO_IPHC_SAM_POS) #define NET_6LO_IPHC_SAM_11 (0x03 << NET_6LO_IPHC_SAM_POS) #define NET_6LO_IPHC_SA_MASK (NET_6LO_IPHC_SAC_MASK | \ NET_6LO_IPHC_SAM_MASK) /* M (Multicast compression) */ #define NET_6LO_IPHC_M_POS 3 #define NET_6LO_IPHC_M_MASK (0x01 << NET_6LO_IPHC_M_POS) #define NET_6LO_IPHC_M_0 (0x00 << NET_6LO_IPHC_M_POS) #define NET_6LO_IPHC_M_1 (0x01 << NET_6LO_IPHC_M_POS) /* DAC (Destination Address Compression) */ #define NET_6LO_IPHC_DAC_POS 2 #define NET_6LO_IPHC_DAC_MASK (0x01 << NET_6LO_IPHC_DAC_POS) #define NET_6LO_IPHC_DAC_0 (0x00 << NET_6LO_IPHC_DAC_POS) #define NET_6LO_IPHC_DAC_1 (0x01 << NET_6LO_IPHC_DAC_POS) /* DAM (Destination Address Mode) */ #define NET_6LO_IPHC_DAM_POS 0 #define NET_6LO_IPHC_DAM_MASK (0x03 << NET_6LO_IPHC_DAM_POS) #define NET_6LO_IPHC_DAM_00 (0x00 << NET_6LO_IPHC_DAM_POS) #define NET_6LO_IPHC_DAM_01 (0x01 << NET_6LO_IPHC_DAM_POS) #define NET_6LO_IPHC_DAM_10 (0x02 << NET_6LO_IPHC_DAM_POS) #define NET_6LO_IPHC_DAM_11 (0x03 << NET_6LO_IPHC_DAM_POS) #define NET_6LO_IPHC_DA_MASK (NET_6LO_IPHC_DAC_MASK | \ NET_6LO_IPHC_DAM_MASK | \ NET_6LO_IPHC_M_MASK) /* Next Header UDP */ #define NET_6LO_NHC_UDP_BARE 0xF0 #define NET_6LO_NHC_UDP_CHKSUM_0 0x00 #define NET_6LO_NHC_UDP_CHKSUM_1 0x08 #define NET_6LO_NHC_UDP_PORT_MASK 0x03 #define NET_6LO_NHC_UDP_PORT_00 0x00 #define NET_6LO_NHC_UDP_PORT_01 0x01 #define NET_6LO_NHC_UDP_PORT_10 0x02 #define NET_6LO_NHC_UDP_PORT_11 0x03 #define NET_6LO_NHC_UDP_CHECKSUM 0x04 #define NET_6LO_NHC_UDP_8_BIT_PORT 0xF0 #define NET_6LO_NHC_UDP_4_BIT_PORT 0xF0B #define NET_6LO_FRAG1_HDR_LEN 4 #define NET_6LO_FRAGN_HDR_LEN 5 #define NET_6LO_FRAG_DATAGRAM_SIZE_LEN 2 #define NET_6LO_FRAG_DATAGRAM_OFFSET_LEN 2 /* Timeout when getting net_buf in RX path. In RX, we must not wait forever as * that can cause the stack to deadlock. This can happen if RX side is flooding * incoming data and we cannot get process the packet in 6lo side. */ #define NET_6LO_RX_PKT_TIMEOUT K_MSEC(100) /* in ms */