1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 1982, 1986, 1990, 1993
3 * The Regents of the University of California.
4 * Copyright(c) 2010-2014 Intel Corporation.
5 * Copyright(c) 2014 6WIND S.A.
9 #ifndef _RTE_IP_COMPAT_H_
10 #define _RTE_IP_COMPAT_H_
19 #include <netinet/in.h>
21 #include <rte_byteorder.h>
32 uint8_t version_ihl; /**< version and header length */
33 uint8_t type_of_service; /**< type of service */
34 uint16_t total_length; /**< length of packet */
35 uint16_t packet_id; /**< packet ID */
36 uint16_t fragment_offset; /**< fragmentation offset */
37 uint8_t time_to_live; /**< time to live */
38 uint8_t next_proto_id; /**< protocol ID */
39 uint16_t hdr_checksum; /**< header checksum */
40 uint32_t src_addr; /**< source address */
41 uint32_t dst_addr; /**< destination address */
42 } __attribute__((__packed__));
44 /** Create IPv4 address */
45 #define IPv4(a,b,c,d) ((uint32_t)(((a) & 0xff) << 24) | \
46 (((b) & 0xff) << 16) | \
47 (((c) & 0xff) << 8) | \
50 /** Maximal IPv4 packet length (including a header) */
51 #define IPV4_MAX_PKT_LEN 65535
53 /** Internet header length mask for version_ihl field */
54 #define IPV4_HDR_IHL_MASK (0x0f)
56 * Internet header length field multiplier (IHL field specifies overall header
57 * length in number of 4-byte words)
59 #define IPV4_IHL_MULTIPLIER (4)
61 /* Fragment Offset * Flags. */
62 #define IPV4_HDR_DF_SHIFT 14
63 #define IPV4_HDR_MF_SHIFT 13
64 #define IPV4_HDR_FO_SHIFT 3
66 #define IPV4_HDR_DF_FLAG (1 << IPV4_HDR_DF_SHIFT)
67 #define IPV4_HDR_MF_FLAG (1 << IPV4_HDR_MF_SHIFT)
69 #define IPV4_HDR_OFFSET_MASK ((1 << IPV4_HDR_MF_SHIFT) - 1)
71 #define IPV4_HDR_OFFSET_UNITS 8
76 #define IPV4_ANY ((uint32_t)0x00000000) /**< 0.0.0.0 */
77 #define IPV4_LOOPBACK ((uint32_t)0x7f000001) /**< 127.0.0.1 */
78 #define IPV4_BROADCAST ((uint32_t)0xe0000000) /**< 224.0.0.0 */
79 #define IPV4_ALLHOSTS_GROUP ((uint32_t)0xe0000001) /**< 224.0.0.1 */
80 #define IPV4_ALLRTRS_GROUP ((uint32_t)0xe0000002) /**< 224.0.0.2 */
81 #define IPV4_MAX_LOCAL_GROUP ((uint32_t)0xe00000ff) /**< 224.0.0.255 */
84 * IPv4 Multicast-related macros
86 #define IPV4_MIN_MCAST IPv4(224, 0, 0, 0) /**< Minimal IPv4-multicast address */
87 #define IPV4_MAX_MCAST IPv4(239, 255, 255, 255) /**< Maximum IPv4 multicast address */
89 #define IS_IPV4_MCAST(x) \
90 ((x) >= IPV4_MIN_MCAST && (x) <= IPV4_MAX_MCAST) /**< check if IPv4 address is multicast */
96 uint32_t vtc_flow; /**< IP version, traffic class & flow label. */
97 uint16_t payload_len; /**< IP packet length - includes sizeof(ip_header). */
98 uint8_t proto; /**< Protocol, next header. */
99 uint8_t hop_limits; /**< Hop limits. */
100 uint8_t src_addr[16]; /**< IP address of source host. */
101 uint8_t dst_addr[16]; /**< IP address of destination host(s). */
102 } __attribute__((__packed__));
104 /* IPv6 vtc_flow: IPv / TC / flow_label */
105 #define IPV6_HDR_FL_SHIFT 0
106 #define IPV6_HDR_TC_SHIFT 20
107 #define IPV6_HDR_FL_MASK ((1u << IPV6_HDR_TC_SHIFT) - 1)
108 #define IPV6_HDR_TC_MASK (0xf << IPV6_HDR_TC_SHIFT)
114 #endif /* _RTE_IP_COMPAT_H_ */