237     uint8_t    *ip6HeaderBytes = reinterpret_cast<uint8_t *>(&ip6Header);  in Compress()  local
261     dscp = ((ip6HeaderBytes[0] << 2) & 0x3c) | (ip6HeaderBytes[1] >> 6);  in Compress()
262     ecn  = (ip6HeaderBytes[1] << 2) & 0xc0;  in Compress()
265 … if (((ip6HeaderBytes[1] & 0x0f) == 0) && ((ip6HeaderBytes[2]) == 0) && ((ip6HeaderBytes[3]) == 0))  in Compress()
285         SuccessOrExit(error = aFrameBuilder.AppendUint8(ecn | (ip6HeaderBytes[1] & 0x0f)));  in Compress()
286         SuccessOrExit(error = aFrameBuilder.AppendBytes(ip6HeaderBytes + 2, 2));  in Compress()
292         SuccessOrExit(error = aFrameBuilder.AppendUint8(ip6HeaderBytes[1] & 0x0f));  in Compress()
293         SuccessOrExit(error = aFrameBuilder.AppendBytes(ip6HeaderBytes + 2, 2));  in Compress()
628         uint8_t *ip6HeaderBytes = reinterpret_cast<uint8_t *>(&aIp6Header);  in DecompressBaseHeader()  local
632         ip6HeaderBytes[1] |= (aFrameData.GetBytes()[0] & 0xc0) >> 2;  in DecompressBaseHeader()
637             ip6HeaderBytes[0] |= (byte >> 2) & 0x0f;  in DecompressBaseHeader()
638             ip6HeaderBytes[1] |= (byte << 6) & 0xc0;  in DecompressBaseHeader()
644             ip6HeaderBytes[1] |= aFrameData.GetBytes()[0] & 0x0f;  in DecompressBaseHeader()
645             ip6HeaderBytes[2] |= aFrameData.GetBytes()[1];  in DecompressBaseHeader()
646             ip6HeaderBytes[3] |= aFrameData.GetBytes()[2];  in DecompressBaseHeader()