diff options
Diffstat (limited to 'lib/includes/hicn')
| -rw-r--r-- | lib/includes/hicn/base.h | 192 | ||||
| -rw-r--r-- | lib/includes/hicn/packet.h | 55 |
2 files changed, 84 insertions, 163 deletions
diff --git a/lib/includes/hicn/base.h b/lib/includes/hicn/base.h index 50961354b..2c80d42e6 100644 --- a/lib/includes/hicn/base.h +++ b/lib/includes/hicn/base.h @@ -65,59 +65,33 @@ typedef u32 hicn_lifetime_t; * [IPPROTO_ICMPRD, IPPROTO_AH, IPPROTO_ICMP, IPPROTO_IPV6] */ -#define HICN_FORMAT_LEN 4 +typedef uint32_t hicn_packet_format_t; -typedef union -{ - /** protocol layers representation */ - struct - { -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - u8 l1; /**< First layer */ - u8 l2; /**< Second layer */ - u8 l3; /**< Third layer */ - u8 l4; /**< Fourth layer */ -#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ - u8 l4; /**< Fourth layer */ - u8 l3; /**< Third layer */ - u8 l2; /**< Second layer */ - u8 l1; /**< First layer */ -#elif _WIN32 /* Windows is assumed little-endian */ - u8 l1; - u8 l2; - u8 l3; - u8 l4; -#else -#error "Unsupported endianness" -#endif - }; - /** u32 representation */ - u32 as_u32; - u8 as_u8[HICN_FORMAT_LEN]; -} hicn_packet_format_t; - -/* Common protocol layers */ /* Common protocol layers */ -#ifndef _WIN32 #define HICN_PACKET_FORMAT(x, y, z, t) \ - (hicn_packet_format_t) \ - { \ + (uint32_t) (((x) << 24) + ((y) << 16) + ((z) << 8) + (t)) + +#define HICN_PACKET_FORMAT_SIZE 4 + +// i = 0..3 +#define HICN_PACKET_FORMAT_GET(format, i) \ + (i < 0 || i > 3) ? IPPROTO_NONE : ((format >> ((3 - (i)) << 3)) & 0xFF) + +#define HICN_PACKET_FORMAT_SET(format, i, val) \ + format = ((val << ((3 - i) << 3)) | \ + (format & (0xFFFFFFFF ^ (0xFF << ((3 - i) << 3))))) + +#define HICN_PACKET_FORMAT_ENUMERATE(FORMAT, POS, PROTOCOL, BODY) \ + for (unsigned POS = 0; POS <= HICN_PACKET_FORMAT_SIZE - 1; POS++) \ { \ - .l1 = x, .l2 = y, .l3 = z, .l4 = t \ - } \ - } -#else -inline const hicn_packet_format_t -HICN_PACKET_FORMAT (int x, int y, int z, int t) -{ - hicn_packet_format_t format; - format.l1 = x; - format.l2 = y; - format.l3 = z; - format.l4 = t; - return format; -} -#endif + uint8_t PROTOCOL = HICN_PACKET_FORMAT_GET (FORMAT, POS); \ + BODY; \ + } + +#define HICN_PACKET_FORMAT_L1(format) HICN_PACKET_FORMAT_L ((format), 0) +#define HICN_PACKET_FORMAT_L2(format) HICN_PACKET_FORMAT_L ((format), 1) +#define HICN_PACKET_FORMAT_L3(format) HICN_PACKET_FORMAT_L ((format), 2) +#define HICN_PACKET_FORMAT_L4(format) HICN_PACKET_FORMAT_L ((format), 3) extern const char *const _protocol_str[]; @@ -132,37 +106,36 @@ int hicn_packet_format_snprintf (char *s, size_t size, #define constexpr const #endif -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV4_TCP = - HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_TCP, IPPROTO_NONE, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV4_ICMP = - HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_ICMP, IPPROTO_NONE, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV6_TCP = - HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_TCP, IPPROTO_NONE, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV6_ICMP = - HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_ICMPV6, IPPROTO_NONE, - IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_NEW = - HICN_PACKET_FORMAT (IPPROTO_ENCAP, IPPROTO_NONE, IPPROTO_NONE, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV4_UDP = - HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_UDP, IPPROTO_ENCAP, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV6_UDP = - HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_UDP, IPPROTO_ENCAP, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV4_TCP_AH = - HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_TCP, IPPROTO_AH, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV4_ICMP_AH = - HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_ICMP, IPPROTO_AH, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV6_TCP_AH = - HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_TCP, IPPROTO_AH, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV6_ICMP_AH = - HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_ICMPV6, IPPROTO_AH, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_NEW_AH = - HICN_PACKET_FORMAT (IPPROTO_ENCAP, IPPROTO_AH, IPPROTO_NONE, IPPROTO_NONE); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV6_UDP_AH = - HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_UDP, IPPROTO_ENCAP, IPPROTO_AH); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_IPV4_UDP_AH = - HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_UDP, IPPROTO_ENCAP, IPPROTO_AH); -static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_NONE = - HICN_PACKET_FORMAT (IPPROTO_NONE, IPPROTO_NONE, IPPROTO_NONE, IPPROTO_NONE); +#define HICN_PACKET_FORMAT_IPV4_TCP \ + HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_TCP, IPPROTO_NONE, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_IPV4_ICMP \ + HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_ICMP, IPPROTO_NONE, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_IPV6_TCP \ + HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_TCP, IPPROTO_NONE, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_IPV6_ICMP \ + HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_ICMPV6, IPPROTO_NONE, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_NEW \ + HICN_PACKET_FORMAT (IPPROTO_ENCAP, IPPROTO_NONE, IPPROTO_NONE, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_IPV4_UDP \ + HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_UDP, IPPROTO_ENCAP, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_IPV6_UDP \ + HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_UDP, IPPROTO_ENCAP, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_IPV4_TCP_AH \ + HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_TCP, IPPROTO_AH, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_IPV4_ICMP_AH \ + HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_ICMP, IPPROTO_AH, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_IPV6_TCP_AH \ + HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_TCP, IPPROTO_AH, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_IPV6_ICMP_AH \ + HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_ICMPV6, IPPROTO_AH, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_NEW_AH \ + HICN_PACKET_FORMAT (IPPROTO_ENCAP, IPPROTO_AH, IPPROTO_NONE, IPPROTO_NONE) +#define HICN_PACKET_FORMAT_IPV6_UDP_AH \ + HICN_PACKET_FORMAT (IPPROTO_IPV6, IPPROTO_UDP, IPPROTO_ENCAP, IPPROTO_AH) +#define HICN_PACKET_FORMAT_IPV4_UDP_AH \ + HICN_PACKET_FORMAT (IPPROTO_IP, IPPROTO_UDP, IPPROTO_ENCAP, IPPROTO_AH) +#define HICN_PACKET_FORMAT_NONE \ + HICN_PACKET_FORMAT (IPPROTO_NONE, IPPROTO_NONE, IPPROTO_NONE, IPPROTO_NONE) /** * @brief Return the hICN format with an additional AH header @@ -172,21 +145,21 @@ static constexpr hicn_packet_format_t HICN_PACKET_FORMAT_NONE = static inline hicn_packet_format_t hicn_get_ah_format (hicn_packet_format_t format) { - hicn_packet_format_t ret = format; - for (unsigned i = 0; i < HICN_FORMAT_LEN; i++) - { - switch (ret.as_u8[i]) + HICN_PACKET_FORMAT_ENUMERATE (format, i, protocol, { + switch (protocol) + { { case IPPROTO_AH: - return ret; + return format; case IPPROTO_NONE: - ret.as_u8[i] = IPPROTO_AH; - return ret; + HICN_PACKET_FORMAT_SET (format, i, IPPROTO_AH); + return format; default: break; } - } - return ret; + } + }); + return format; } /* @@ -196,27 +169,22 @@ hicn_get_ah_format (hicn_packet_format_t format) */ #define HICN_HDRLEN_MAX 72 -/** - * @brief Check if type is none. - * @return 1 if none, 0 otherwise - */ -static inline int -hicn_type_is_none (hicn_packet_format_t format) -{ - return (format.l1 == IPPROTO_NONE) && (format.l2 == IPPROTO_NONE) && - (format.l3 == IPPROTO_NONE) && (format.l4 == IPPROTO_NONE); -} +#define HICN_PACKET_FORMAT_IS_NONE(format) \ + ((HICN_PACKET_FORMAT_GET (format, 0) == IPPROTO_NONE) && \ + (HICN_PACKET_FORMAT_GET (format, 1) == IPPROTO_NONE) && \ + (HICN_PACKET_FORMAT_GET (format, 2) == IPPROTO_NONE) && \ + (HICN_PACKET_FORMAT_GET (format, 3) == IPPROTO_NONE)) + +#define HICN_PACKET_FORMAT_IS_AH(format) \ + ((HICN_PACKET_FORMAT_GET (format, 0) == IPPROTO_AH) || \ + (HICN_PACKET_FORMAT_GET (format, 1) == IPPROTO_AH) || \ + (HICN_PACKET_FORMAT_GET (format, 2) == IPPROTO_AH) || \ + (HICN_PACKET_FORMAT_GET (format, 3) == IPPROTO_AH)) -#define _is_ipv4(format) (format.l1 == IPPROTO_IP) -#define _is_ipv6(format) (format.l1 == IPPROTO_IPV6) -#define _is_tcp(format) (format.l2 == IPPROTO_TCP) -#define _is_udp(format) (format.l2 == IPPROTO_UDP) -#define _is_icmp(format) \ - ((format.l2 == IPPROTO_ICMP) || (format.l2 == IPPROTO_ICMPV6)) -#define _is_cmpr(format) ((format & HFO_CMPR) >> 5) -#define _is_ah(format) \ - ((format.l1 == IPPROTO_AH) || (format.l2 == IPPROTO_AH) || \ - (format.l3 == IPPROTO_AH)) +#define HICN_PACKET_FORMAT_IS_IPV4(format) \ + (HICN_PACKET_FORMAT_GET (format, 0) == IPPROTO_IP) +#define HICN_PACKET_FORMAT_IS_IPV6(format) \ + (HICN_PACKET_FORMAT_GET (format, 0) == IPPROTO_IPV6) /* * @brief hICN packet types @@ -276,9 +244,9 @@ typedef u8 hicn_path_label_t; /** * @brief Path label computations * - * Path label is computed by accumulating the identifiers of successive output - * faces as a Data packet is traveling from its producer back to the consumer - * originating the Interest. + * Path label is computed by accumulating the identifiers of successive + * output faces as a Data packet is traveling from its producer back to the + * consumer originating the Interest. * * NOTE: this computation is not (yet) part of the hICN specification. */ diff --git a/lib/includes/hicn/packet.h b/lib/includes/hicn/packet.h index 85f76d21b..c4a0dd80e 100644 --- a/lib/includes/hicn/packet.h +++ b/lib/includes/hicn/packet.h @@ -233,6 +233,10 @@ void hicn_packet_set_format (hicn_packet_buffer_t *pkbuf, hicn_packet_format_t format); hicn_packet_type_t hicn_packet_get_type (const hicn_packet_buffer_t *pkbuf); + +void hicn_packet_initialize_type (hicn_packet_buffer_t *pkbuf, + hicn_packet_type_t type); + void hicn_packet_set_type (hicn_packet_buffer_t *pkbuf, hicn_packet_type_t type); @@ -644,57 +648,6 @@ int hicn_packet_compute_header_checksum (const hicn_packet_buffer_t *pkbuf, int hicn_packet_check_integrity_no_payload (const hicn_packet_buffer_t *pkbuf, u16 init_sum); -/** - * @brief Returns the packet TTL - * @param [in] pkbuf - hICN packet buffer - * @param [out] hops - Pointer to the variable receiving the TTL value - * @return hICN error code - */ -int hicn_packet_get_ttl (const hicn_packet_buffer_t *pkbuf, u8 *hops); - -/** - * @brief Returns the packet source port - * @param [in] pkbuf - hICN packet buffer - * @param [in, out] pos - Current position in the sequence of headers while - * @param [out] hops - The TTL value to set - * @return hICN error code - */ -int hicn_packet_set_ttl (const hicn_packet_buffer_t *pkbuf, u8 hops); - -/** - * @brief Returns the packet source port - * @param [in] pkbuf - hICN packet buffer - * @param [out] port - Pointer to the variable that will receive the port - * number - * @return hICN error code - */ -int hicn_packet_get_src_port (const hicn_packet_buffer_t *pkbuf, u16 *port); - -/** - * @brief Sets the packet source port - * @param [in] pkbuf - hICN packet buffer - * @param [out] port - The port number to set - * @return hICN error code - */ -int hicn_packet_set_src_port (const hicn_packet_buffer_t *pkbuf, u16 port); - -/** - * @brief Returns the packet source port - * @param [in] pkbuf - hICN packet buffer - * @param [out] port - Pointer to the variable that will receive the port - * number - * @return hICN error code - */ -int hicn_packet_get_dst_port (const hicn_packet_buffer_t *pkbuf, u16 *port); - -/** - * @brief Sets the packet source port - * @param [in] pkbuf - hICN packet buffer - * @param [out] port - The port number to set - * @return hICN error code - */ -int hicn_packet_set_dst_port (const hicn_packet_buffer_t *pkbuf, u16 port); - int hicn_interest_rewrite (const hicn_packet_buffer_t *pkbuf, const hicn_ip_address_t *addr_new, hicn_ip_address_t *addr_old); |