diff options
| -rw-r--r-- | lib/src/common.h | 30 | ||||
| -rw-r--r-- | lib/src/compat.h | 33 | ||||
| -rw-r--r-- | lib/src/header.h | 28 | ||||
| -rw-r--r-- | lib/src/mapme.c | 32 | ||||
| -rw-r--r-- | lib/src/mapme.h | 29 | ||||
| -rw-r--r-- | lib/src/protocol/ah.h | 11 | ||||
| -rw-r--r-- | lib/src/protocol/icmp.h | 18 | ||||
| -rw-r--r-- | lib/src/protocol/icmprd.h | 29 | ||||
| -rw-r--r-- | lib/src/protocol/ipv4.h | 14 | ||||
| -rw-r--r-- | lib/src/protocol/ipv6.h | 15 | ||||
| -rw-r--r-- | lib/src/protocol/tcp.h | 9 | ||||
| -rw-r--r-- | lib/src/protocol/udp.h | 7 |
12 files changed, 198 insertions, 57 deletions
diff --git a/lib/src/common.h b/lib/src/common.h index e67762301..1d4b1e6bf 100644 --- a/lib/src/common.h +++ b/lib/src/common.h @@ -80,7 +80,7 @@ typedef uint8_t u8; #define __ORDER_BIG_ENDIAN__ 0x44434241UL #define __BYTE_ORDER__ ('ABCD') - /* Windows compatibility headers*/ + /* Windows compatibility headers */ #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <winsock2.h> @@ -95,14 +95,22 @@ typedef uint8_t u8; #define IOVEC #define UIO_MAXIOV 16 #define IOV_MAX UIO_MAXIOV -struct iovec { - void* iov_base; - size_t iov_len; +struct iovec +{ + void *iov_base; + size_t iov_len; }; #endif - #endif +/* + * Portable attribute packed. + */ +#ifndef _WIN32 +#define PACKED( __Declaration__ ) __Declaration__ __attribute__((__packed__)) +#else +#define PACKED( __Declaration__ ) __pragma( pack(push, 1) ) __Declaration__ __pragma( pack(pop) ) +#endif /* @@ -120,6 +128,7 @@ struct iovec { #ifndef _WIN32 #include <netinet/in.h> #endif + typedef union { u32 as_u32; @@ -265,6 +274,17 @@ csum (const void *addr, size_t size, u16 init) */ #define HICN_IP_VERSION(packet) ((hicn_header_t *)packet)->v4.ip.version +/* + * ntohll / htonll allows byte swapping for 64 bits integers + */ +#ifndef htonll +#define htonll(x) ((1==htonl(1)) ? (x) : ((uint64_t)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32)) +#endif + +#ifndef ntohll +#define ntohll(x) ((1==ntohl(1)) ? (x) : ((uint64_t)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32)) +#endif + #endif /* HICN_COMMON_H */ /* diff --git a/lib/src/compat.h b/lib/src/compat.h index 52dd41f1e..e174414a4 100644 --- a/lib/src/compat.h +++ b/lib/src/compat.h @@ -58,12 +58,6 @@ typedef enum } hicn_format_t; /** - * Maximum Size of the hICN header (the effective size will depend on the - * underlying IP version) - */ -#define HICN_HDR_LEN sizeof(hicn_header_t) - -/** * Minimum required header length to determine the type and length of a supposed * hICN packet. * This should be equal to the maximum value over all possible hICN packet @@ -283,8 +277,9 @@ int hicn_packet_set_signature_size (hicn_format_t format, * @param [in] signature_timestamp - Signature timestamp to set * @return hICN error code */ -int hicn_packet_set_signature_timestamp (hicn_format_t format, hicn_header_t * h, - uint64_t signature_timestamp); +int hicn_packet_set_signature_timestamp (hicn_format_t format, + hicn_header_t * h, + uint64_t signature_timestamp); /** * @brief Sets the signature size @@ -293,8 +288,9 @@ int hicn_packet_set_signature_timestamp (hicn_format_t format, hicn_header_t * h * @param [out] signature_timestamp - Retrieved signature timestamp * @return hICN error code */ -int hicn_packet_get_signature_timestamp (hicn_format_t format, const hicn_header_t * h, - uint64_t *signature_timestamp); +int hicn_packet_get_signature_timestamp (hicn_format_t format, + const hicn_header_t * h, + uint64_t * signature_timestamp); /** * @brief Sets the signature size @@ -303,8 +299,9 @@ int hicn_packet_get_signature_timestamp (hicn_format_t format, const hicn_header * @param [in] validation_algorithm - Validation algorithm to set * @return hICN error code */ -int hicn_packet_set_validation_algorithm (hicn_format_t format, hicn_header_t * h, - uint8_t validation_algorithm); +int hicn_packet_set_validation_algorithm (hicn_format_t format, + hicn_header_t * h, + uint8_t validation_algorithm); /** * @brief Sets the signature size @@ -313,8 +310,9 @@ int hicn_packet_set_validation_algorithm (hicn_format_t format, hicn_header_t * * @param [out] validation_algorithm - Retrieved validation algorithm * @return hICN error code */ -int hicn_packet_get_validation_algorithm (hicn_format_t format, const hicn_header_t * h, - uint8_t * validation_algorithm); +int hicn_packet_get_validation_algorithm (hicn_format_t format, + const hicn_header_t * h, + uint8_t * validation_algorithm); /** * @brief Sets the signature size @@ -324,7 +322,7 @@ int hicn_packet_get_validation_algorithm (hicn_format_t format, const hicn_heade * @return hICN error code */ int hicn_packet_set_key_id (hicn_format_t format, hicn_header_t * h, - uint8_t *key_id); + uint8_t * key_id); /** * @brief Sets the signature size @@ -334,7 +332,7 @@ int hicn_packet_set_key_id (hicn_format_t format, hicn_header_t * h, * @return hICN error code */ int hicn_packet_get_key_id (hicn_format_t format, hicn_header_t * h, - uint8_t ** key_id, uint8_t *key_id_length); + uint8_t ** key_id, uint8_t * key_id_length); /** * @brief Retrieves the packet hop limit @@ -387,7 +385,8 @@ int hicn_packet_set_src_port (hicn_header_t * packet, u16 src_port); int hicn_packet_get_src_port (const hicn_header_t * packet, u16 * src_port); int hicn_packet_set_dst_port (hicn_header_t * packet, u16 dst_port); int hicn_packet_get_dst_port (const hicn_header_t * packet, u16 * dst_port); -int hicn_packet_get_signature(hicn_format_t format, hicn_header_t * packet, uint8_t ** sign_buf); +int hicn_packet_get_signature (hicn_format_t format, hicn_header_t * packet, + uint8_t ** sign_buf); /* Interest */ int hicn_interest_get_name (hicn_format_t format, diff --git a/lib/src/header.h b/lib/src/header.h index 3864064f2..b21fe5c84 100644 --- a/lib/src/header.h +++ b/lib/src/header.h @@ -16,15 +16,20 @@ /** * @file header.h * @brief hICN header data structures. - * details. + * + * NOTE: These structures are used as convenient facade for accessing + * the encapsulated headers. They are not written taking compiler padding + * into account, then a sizeof() on these struct could not give the expected + * result. For accessing the size of the hicn headers use the macros at the end of + * this file. */ + #ifndef HICN_HEADER_H #define HICN_HEADER_H #include "common.h" #include "protocol.h" - typedef struct { _ipv6_header_t ip; @@ -94,6 +99,25 @@ typedef union hicn_protocol_t protocol; } hicn_header_t; + +#define HICN_V6_TCP_HDRLEN (IPV6_HDRLEN + TCP_HDRLEN) +#define HICN_V6_ICMP_HDRLEN (IPV6_HDRLEN + ICMP_HDRLEN) +#define HICN_V6_WLDR_HDRLEN (IPV6_HDRLEN + ICMPWLDR_HDRLEN) + +#define HICN_V6_TCP_AH_HDRLEN (HICN_V6_TCP_HDRLEN + AH_HDRLEN) +#define HICN_V6_ICMP_AH_HDRLEN (HICN_V6_ICMP_HDRLEN + AH_HDRLEN) + + +#define HICN_V4_TCP_HDRLEN (IPV4_HDRLEN + TCP_HDRLEN) +#define HICN_V4_ICMP_HDRLEN (IPV4_HDRLEN + ICMP_HDRLEN) +#define HICN_V4_WLDR_HDRLEN (IPV4_HDRLEN + ICMPWLDR_HDRLEN) + +#define HICN_V4_TCP_AH_HDRLEN (HICN_V4_TCP_HDRLEN + AH_HDRLEN) +#define HICN_V4_ICMP_AH_HDRLEN (HICN_V4_ICMP_HDRLEN + AH_HDRLEN) + + + + #endif /* HICN_HEADER_H */ /* diff --git a/lib/src/mapme.c b/lib/src/mapme.c index 746336205..ccd384b21 100644 --- a/lib/src/mapme.c +++ b/lib/src/mapme.c @@ -44,14 +44,10 @@ hicn_mapme_v4_create_packet (u8 * buf, const hicn_prefix_t * prefix, .saddr.as_u32 = 0, .daddr = prefix->name.ip4, }, - .icmp = { - .type = ((params->type == UPDATE) || (params->type == NOTIFICATION)) - ? HICN_MAPME_ICMP_TYPE_IPV4 - : HICN_MAPME_ICMP_TYPE_ACK_IPV4, + .icmp_rd = { + .type = ((params->type == UPDATE) || (params->type == NOTIFICATION)) ? HICN_MAPME_ICMP_TYPE_IPV4 : HICN_MAPME_ICMP_TYPE_ACK_IPV4, .code = HICN_MAPME_ICMP_CODE, .csum = 0, - }, - .icmp_rd = { .ip = prefix->name.ip4, }, .seq = htonl(params->seq), @@ -80,14 +76,10 @@ hicn_mapme_v6_create_packet (u8 * buf, const hicn_prefix_t * prefix, .nxt = IPPROTO_ICMPV6, .hlim = HICN_MAPME_TTL, }, - .icmp = { - .type = ((params->type == UPDATE) || (params->type == NOTIFICATION)) - ? HICN_MAPME_ICMP_TYPE_IPV6 - : HICN_MAPME_ICMP_TYPE_ACK_IPV6, + .icmp_rd = { + .type = ((params->type == UPDATE) || (params->type == NOTIFICATION)) ? HICN_MAPME_ICMP_TYPE_IPV6 : HICN_MAPME_ICMP_TYPE_ACK_IPV6, .code = HICN_MAPME_ICMP_CODE, .csum = 0, - }, - .icmp_rd = { .res = 0, .tgt = prefix->name.ip6, .dst = prefix->name.ip6, @@ -120,8 +112,8 @@ hicn_mapme_v4_create_ack (u8 * buf, const mapme_params_t * params) mh->ip.daddr = mh->ip.saddr; mh->ip.saddr = tmp; mh->ip.ttl = HICN_MAPME_TTL; - mh->icmp.type = HICN_MAPME_ICMP_TYPE_ACK_IPV4; - mh->icmp.csum = 0; + mh->icmp_rd.type = HICN_MAPME_ICMP_TYPE_ACK_IPV4; + mh->icmp_rd.csum = 0; return HICN_MAPME_V4_HDRLEN; } @@ -136,8 +128,8 @@ hicn_mapme_v6_create_ack (u8 * buf, const mapme_params_t * params) mh->ip.daddr = mh->ip.saddr; mh->ip.saddr = tmp; mh->ip.hlim = HICN_MAPME_TTL; - mh->icmp.type = HICN_MAPME_ICMP_TYPE_ACK_IPV6; - mh->icmp.csum = 0; + mh->icmp_rd.type = HICN_MAPME_ICMP_TYPE_ACK_IPV6; + mh->icmp_rd.csum = 0; return HICN_MAPME_V6_HDRLEN; } @@ -161,14 +153,14 @@ hicn_mapme_v4_parse_packet (const u8 * packet, hicn_prefix_t * prefix, /* *INDENT-OFF* */ *prefix = (hicn_prefix_t) { .name = { - .ip4 = HICN_MAPME_TYPE_IS_IU (mh->icmp.type) ? mh->ip.daddr : mh->ip.saddr, + .ip4 = HICN_MAPME_TYPE_IS_IU (mh->icmp_rd.type) ? mh->ip.daddr : mh->ip.saddr, }, .len = mh->len, }; *params = (mapme_params_t) { .protocol = IPPROTO_IP, - .type = (mh->icmp.type == HICN_MAPME_ICMP_TYPE_IPV4) ? UPDATE : UPDATE_ACK, + .type = (mh->icmp_rd.type == HICN_MAPME_ICMP_TYPE_IPV4) ? UPDATE : UPDATE_ACK, .seq = ntohl (mh->seq), }; /* *INDENT-ON* */ @@ -185,14 +177,14 @@ hicn_mapme_v6_parse_packet (const u8 * packet, hicn_prefix_t * prefix, /* *INDENT-OFF* */ *prefix = (hicn_prefix_t) { .name = { - .ip6 = HICN_MAPME_TYPE_IS_IU (mh->icmp.type) ? mh->ip.daddr : mh->ip.saddr, + .ip6 = HICN_MAPME_TYPE_IS_IU (mh->icmp_rd.type) ? mh->ip.daddr : mh->ip.saddr, }, .len = mh->len, }; *params = (mapme_params_t) { .protocol = IPPROTO_IPV6, - .type = (mh->icmp.type == HICN_MAPME_ICMP_TYPE_IPV6) ? UPDATE : UPDATE_ACK, + .type = (mh->icmp_rd.type == HICN_MAPME_ICMP_TYPE_IPV6) ? UPDATE : UPDATE_ACK, .seq = ntohl (mh->seq), }; /* *INDENT-ON* */ diff --git a/lib/src/mapme.h b/lib/src/mapme.h index 00c7ca798..8fae44530 100644 --- a/lib/src/mapme.h +++ b/lib/src/mapme.h @@ -47,10 +47,10 @@ typedef struct /** @brief Default MAP-Me configuration */ static const hicn_mapme_conf_t hicn_mapme_conf = { - ATTR_INIT(enabled, false), - ATTR_INIT(timescale, 0), - ATTR_INIT(retx, 50), - ATTR_INIT(discovery, true), + ATTR_INIT (enabled, false), + ATTR_INIT (timescale, 0), + ATTR_INIT (retx, 50), + ATTR_INIT (discovery, true), }; /** @brief MAP-Me update sequence number */ @@ -106,22 +106,30 @@ int hicn_mapme_parse_packet (const u8 * packet, hicn_prefix_t * prefix, /* Default TTL */ #define HICN_MAPME_TTL 255 // typical for redirect (ref?) +/* + * The length of the MAPME4 header struct must be 120 bytes. + */ +#define EXPECTED_MAPME_V4_HDRLEN 120 + /** @brief MAP-Me packet header for IPv4 */ -typedef struct __attribute__ ((packed)) +typedef struct { _ipv4_header_t ip; - _icmp_header_t icmp; _icmprd4_header_t icmp_rd; seq_t seq; u8 len; u8 _pad[3]; } hicn_mapme_v4_header_t; +/* + * The length of the MAPME4 header struct must be bytes. + */ +#define EXPECTED_MAPME_V6_HDRLEN 88 + /** @brief MAP-Me packet header for IPv6 */ -typedef struct __attribute__ ((packed)) +typedef struct { _ipv6_header_t ip; - _icmp_header_t icmp; _icmprd_header_t icmp_rd; seq_t seq; u8 len; @@ -138,6 +146,11 @@ typedef union #define HICN_MAPME_V4_HDRLEN sizeof(hicn_mapme_v4_header_t) #define HICN_MAPME_V6_HDRLEN sizeof(hicn_mapme_v6_header_t) +static_assert (EXPECTED_MAPME_V4_HDRLEN == HICN_MAPME_V4_HDRLEN, + "Size of MAPME_V4 struct does not match its expected size."); +static_assert (EXPECTED_MAPME_V6_HDRLEN == HICN_MAPME_V6_HDRLEN, + "Size of MAPME_V6 struct does not match its expected size."); + #endif /* HICN_MAPME_H */ /* diff --git a/lib/src/protocol/ah.h b/lib/src/protocol/ah.h index f8a05bf38..a59a5051a 100644 --- a/lib/src/protocol/ah.h +++ b/lib/src/protocol/ah.h @@ -20,12 +20,19 @@ #ifndef HICN_PROTOCOL_AH_H #define HICN_PROTOCOL_AH_H +#include "../common.h" + /* * The TCP PSH flag is set to indicate TCP payload in fact contains a AH header * with signature information for the packet */ #define AH_FLAG 0x10 +/* + * The length of the AH struct must be 44 bytes. + */ +#define EXPECTED_AH_HDRLEN 44 + typedef struct { u8 nh; // (to match with reserved in IPSEC AH) @@ -49,6 +56,8 @@ typedef struct }; // Unix timestamp indicating when the signature has been calculated u8 timestamp_as_u8[8]; + u16 timestamp_as_u16[4]; + u32 timestamp_as_u32[2]; }; // ICV would follow u8 keyId[32]; // Hash of the pub key @@ -57,6 +66,8 @@ typedef struct } _ah_header_t; #define AH_HDRLEN sizeof(_ah_header_t) +static_assert (EXPECTED_AH_HDRLEN == AH_HDRLEN, + "Size of AH Struct does not match its expected size."); #endif /* HICN_PROTOCOL_AH_H */ diff --git a/lib/src/protocol/icmp.h b/lib/src/protocol/icmp.h index 5a84995b6..36954bb6d 100644 --- a/lib/src/protocol/icmp.h +++ b/lib/src/protocol/icmp.h @@ -22,6 +22,11 @@ #include "../common.h" +/* + * The length of the ICMP header struct must be 4 bytes. + */ +#define EXPECTED_ICMP_HDRLEN 4 + typedef struct { u8 type; @@ -29,6 +34,15 @@ typedef struct u16 csum; } _icmp_header_t; +#define ICMP_HDRLEN sizeof(_icmp_header_t) +static_assert (EXPECTED_ICMP_HDRLEN == ICMP_HDRLEN, + "Size of ICMP struct does not match its expected size."); + +/* + * The length of the ICMPWLDR header struct must be 4 bytes. + */ +#define EXPECTED_ICMPWLDR_HDRLEN 8 + typedef struct { u8 type; @@ -55,7 +69,9 @@ typedef struct }; } _icmp_wldr_header_t; -#define ICMP_HDRLEN sizeof(_icmp_header_t) +#define ICMPWLDR_HDRLEN sizeof(_icmp_wldr_header_t) +static_assert (EXPECTED_ICMPWLDR_HDRLEN == ICMPWLDR_HDRLEN, + "Size of ICMPWLDR struct does not match its expected size."); #endif /* HICN_PROTOCOL_ICMP_H */ diff --git a/lib/src/protocol/icmprd.h b/lib/src/protocol/icmprd.h index c2f27d673..aa1fa01ae 100644 --- a/lib/src/protocol/icmprd.h +++ b/lib/src/protocol/icmprd.h @@ -21,21 +21,46 @@ #define HICN_PROTOCOL_ICMPRD_H #include "../common.h" +#include "ipv4.h" -typedef struct __attribute__ ((__packed__)) +/* + * The length of the ICMPRD4 header struct must be 92 bytes. + */ +#define EXPECTED_ICMPRD4_HDRLEN 92 + +typedef struct { + u8 type; + u8 code; + u16 csum; ip4_address_t ip; _ipv4_header_t iph; u8 data[64]; } _icmprd4_header_t; -typedef struct __attribute__ ((__packed__)) +#define ICMPRD4_HDRLEN sizeof(_icmprd4_header_t) +static_assert (EXPECTED_ICMPRD4_HDRLEN == ICMPRD4_HDRLEN, + "Size of ICMPWLDR struct does not match its expected size."); + +/* + * The length of the ICMPRD header struct must be 40 bytes. + */ +#define EXPECTED_ICMPRD_HDRLEN 40 + +typedef struct { + u8 type; + u8 code; + u16 csum; u32 res; ip6_address_t tgt; ip6_address_t dst; } _icmprd_header_t; +#define ICMPRD_HDRLEN sizeof(_icmprd_header_t) +static_assert (EXPECTED_ICMPRD_HDRLEN == ICMPRD_HDRLEN, + "Size of ICMPWLDR struct does not match its expected size."); + #endif /* HICN_PROTOCOL_ICMPRD_H */ /* diff --git a/lib/src/protocol/ipv4.h b/lib/src/protocol/ipv4.h index c57485b6c..8a5b6683b 100644 --- a/lib/src/protocol/ipv4.h +++ b/lib/src/protocol/ipv4.h @@ -22,6 +22,11 @@ /* Headers were adapted from linux' definitions in netinet/ip.h */ +/* + * The length of the IPV4 header struct must be 20 bytes. + */ +#define EXPECTED_IPV4_HDRLEN 20 + typedef struct { union @@ -55,6 +60,13 @@ typedef struct #define ipv4_header_bytes(ipv4_header) (sizeof(u32) * (ipv4_header->version_ihl & 0xf)) #define IPV4_HDRLEN sizeof(_ipv4_header_t) +static_assert (EXPECTED_IPV4_HDRLEN == IPV4_HDRLEN, + "Size of IPV4 struct does not match its expected size."); + +/* + * The length of the IPV4 pseudo header struct must be 12 bytes. + */ +#define EXPECTED_IPV4_PSHDRLEN 12 typedef struct { @@ -66,6 +78,8 @@ typedef struct } ipv4_pseudo_header_t; #define IPV4_PSHDRLEN sizeof(ipv4_pseudo_header_t) +static_assert (EXPECTED_IPV4_PSHDRLEN == IPV4_PSHDRLEN, + "Size of IPV4_PSHDR struct does not match its expected size."); /* Default field values */ #define IPV4_DEFAULT_VERSION 4 diff --git a/lib/src/protocol/ipv6.h b/lib/src/protocol/ipv6.h index 28a1aa47f..5a83abcae 100644 --- a/lib/src/protocol/ipv6.h +++ b/lib/src/protocol/ipv6.h @@ -18,6 +18,11 @@ #include "../common.h" +/* + * The length of the IPV6 header struct must be 40 bytes. + */ +#define EXPECTED_IPV6_HDRLEN 40 + typedef struct { union @@ -35,8 +40,14 @@ typedef struct ip6_address_t daddr; /* destination address */ } _ipv6_header_t; - #define IPV6_HDRLEN sizeof(_ipv6_header_t) +static_assert (EXPECTED_IPV6_HDRLEN == IPV6_HDRLEN, + "Size of IPV6 struct does not match its expected size."); + +/* + * The length of the IPV6 pseudo header struct must be 40 bytes. + */ +#define EXPECTED_IPV6_PSHDRLEN 40 typedef struct { @@ -49,6 +60,8 @@ typedef struct } ipv6_pseudo_header_t; #define IPV6_PSHDRLEN sizeof(ipv6_pseudo_header_t) +static_assert (EXPECTED_IPV6_PSHDRLEN == IPV6_PSHDRLEN, + "Size of IPV6_PSHDR struct does not match its expected size."); /* Default field values */ #define IPV6_DEFAULT_VERSION 6 diff --git a/lib/src/protocol/tcp.h b/lib/src/protocol/tcp.h index 68f4bf8f9..3a15a93b3 100644 --- a/lib/src/protocol/tcp.h +++ b/lib/src/protocol/tcp.h @@ -21,11 +21,16 @@ #include "../name.h" /* + * The length of the TCP header struct must be 20 bytes. + */ +#define EXPECTED_TCP_HDRLEN 20 + +/* * NOTE: bitfields are problematic for portability reasons. There are provided * here for reference and documentation purposes, we might just provide a macro * to disable and use it instead of __BYTE_ORDER__. */ -typedef struct __attribute__ ((packed)) +typedef struct { u16 sport; u16 dport; @@ -120,6 +125,8 @@ typedef struct __attribute__ ((packed)) } _tcp_header_t; #define TCP_HDRLEN sizeof(_tcp_header_t) +static_assert (EXPECTED_TCP_HDRLEN == TCP_HDRLEN, + "Size of TCP struct does not match its expected size."); #ifndef HICN_VPP_PLUGIN diff --git a/lib/src/protocol/udp.h b/lib/src/protocol/udp.h index 58cd65095..75d1ea98c 100644 --- a/lib/src/protocol/udp.h +++ b/lib/src/protocol/udp.h @@ -16,6 +16,11 @@ #ifndef HICN_PROTOCOL_UDP_H #define HICN_PROTOCOL_UDP_H +/* + * The length of the UDP header struct must be 8 bytes. + */ +#define EXPECTED_UDP_HDRLEN 8 + typedef struct { u16 src_port; @@ -25,6 +30,8 @@ typedef struct } _udp_header_t; #define UDP_HDRLEN sizeof(_udp_header_t) +static_assert (EXPECTED_UDP_HDRLEN == UDP_HDRLEN, + "Size of UDP struct does not match its expected size."); #endif /* HICN_PROTOCOL_UDP_H */ |