X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/78f0dde7c972f65de116912d48fb09d0a296a53e..1fb50928ce27360c1c987312774f686b23c69b51:/extract.h?ds=sidebyside diff --git a/extract.h b/extract.h index 4dfbaae3..23623c28 100644 --- a/extract.h +++ b/extract.h @@ -36,7 +36,7 @@ * MIPS or Alpha, which has instructions that can help when doing * unaligned loads. * - * Declare packed structures containing a u_int16_t and a u_int32_t, + * Declare packed structures containing a uint16_t and a uint32_t, * cast the pointer to point to one of those, and fetch through it; * the GCC manual doesn't appear to explicitly say that * __attribute__((packed)) causes the compiler to generate unaligned-safe @@ -63,9 +63,9 @@ * line is aligned, e.g. * * #pragma unalign 1 - * typedef u_int16_t unaligned_u_int16_t; + * typedef uint16_t unaligned_uint16_t; * - * to define unaligned_u_int16_t as a 16-bit unaligned data type. + * to define unaligned_uint16_t as a 16-bit unaligned data type. * This could be presumably used, in sufficiently recent versions of * the compiler, with macros similar to those below. This would be * useful only if that compiler could generate better code for PA-RISC @@ -81,30 +81,30 @@ * accesses for *specific* items? */ typedef struct { - u_int16_t val; -} __attribute__((packed)) unaligned_u_int16_t; + uint16_t val; +} __attribute__((packed)) unaligned_uint16_t; typedef struct { - u_int32_t val; -} __attribute__((packed)) unaligned_u_int32_t; + uint32_t val; +} __attribute__((packed)) unaligned_uint32_t; -static inline u_int16_t +static inline uint16_t EXTRACT_16BITS(const void *p) { - return ((u_int16_t)ntohs(((const unaligned_u_int16_t *)(p))->val)); + return ((uint16_t)ntohs(((const unaligned_uint16_t *)(p))->val)); } -static inline u_int32_t +static inline uint32_t EXTRACT_32BITS(const void *p) { - return ((u_int32_t)ntohl(((const unaligned_u_int32_t *)(p))->val)); + return ((uint32_t)ntohl(((const unaligned_uint32_t *)(p))->val)); } -static inline u_int64_t +static inline uint64_t EXTRACT_64BITS(const void *p) { - return ((u_int64_t)(((u_int64_t)ntohl(((const unaligned_u_int32_t *)(p) + 0)->val)) << 32 | \ - ((u_int64_t)ntohl(((const unaligned_u_int32_t *)(p) + 1)->val)) << 0)); + return ((uint64_t)(((uint64_t)ntohl(((const unaligned_uint32_t *)(p) + 0)->val)) << 32 | + ((uint64_t)ntohl(((const unaligned_uint32_t *)(p) + 1)->val)) << 0)); } #else /* have to do it a byte at a time */ @@ -116,54 +116,78 @@ EXTRACT_64BITS(const void *p) * assemble them. */ #define EXTRACT_16BITS(p) \ - ((u_int16_t)((u_int16_t)*((const u_int8_t *)(p) + 0) << 8 | \ - (u_int16_t)*((const u_int8_t *)(p) + 1))) + ((uint16_t)(((uint16_t)(*((const uint8_t *)(p) + 0)) << 8) | \ + ((uint16_t)(*((const uint8_t *)(p) + 1)) << 0))) #define EXTRACT_32BITS(p) \ - ((u_int32_t)((u_int32_t)*((const u_int8_t *)(p) + 0) << 24 | \ - (u_int32_t)*((const u_int8_t *)(p) + 1) << 16 | \ - (u_int32_t)*((const u_int8_t *)(p) + 2) << 8 | \ - (u_int32_t)*((const u_int8_t *)(p) + 3))) + ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 24) | \ + ((uint32_t)(*((const uint8_t *)(p) + 1)) << 16) | \ + ((uint32_t)(*((const uint8_t *)(p) + 2)) << 8) | \ + ((uint32_t)(*((const uint8_t *)(p) + 3)) << 0))) #define EXTRACT_64BITS(p) \ - ((u_int64_t)((u_int64_t)*((const u_int8_t *)(p) + 0) << 56 | \ - (u_int64_t)*((const u_int8_t *)(p) + 1) << 48 | \ - (u_int64_t)*((const u_int8_t *)(p) + 2) << 40 | \ - (u_int64_t)*((const u_int8_t *)(p) + 3) << 32 | \ - (u_int64_t)*((const u_int8_t *)(p) + 4) << 24 | \ - (u_int64_t)*((const u_int8_t *)(p) + 5) << 16 | \ - (u_int64_t)*((const u_int8_t *)(p) + 6) << 8 | \ - (u_int64_t)*((const u_int8_t *)(p) + 7))) + ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 56) | \ + ((uint64_t)(*((const uint8_t *)(p) + 1)) << 48) | \ + ((uint64_t)(*((const uint8_t *)(p) + 2)) << 40) | \ + ((uint64_t)(*((const uint8_t *)(p) + 3)) << 32) | \ + ((uint64_t)(*((const uint8_t *)(p) + 4)) << 24) | \ + ((uint64_t)(*((const uint8_t *)(p) + 5)) << 16) | \ + ((uint64_t)(*((const uint8_t *)(p) + 6)) << 8) | \ + ((uint64_t)(*((const uint8_t *)(p) + 7)) << 0))) #endif /* must special-case unaligned accesses */ #else /* LBL_ALIGN */ /* * The processor natively handles unaligned loads, so we can just * cast the pointer and fetch through it. */ -static inline u_int16_t +static inline uint16_t EXTRACT_16BITS(const void *p) { - return ((u_int16_t)ntohs(*(const u_int16_t *)(p))); + return ((uint16_t)ntohs(*(const uint16_t *)(p))); } -static inline u_int32_t +static inline uint32_t EXTRACT_32BITS(const void *p) { - return ((u_int32_t)ntohl(*(const u_int32_t *)(p))); + return ((uint32_t)ntohl(*(const uint32_t *)(p))); } -static inline u_int64_t +static inline uint64_t EXTRACT_64BITS(const void *p) { - return ((u_int64_t)(((u_int64_t)ntohl(*((const u_int32_t *)(p) + 0))) << 32 | \ - ((u_int64_t)ntohl(*((const u_int32_t *)(p) + 1))) << 0)); + return ((uint64_t)(((uint64_t)ntohl(*((const uint32_t *)(p) + 0))) << 32 | + ((uint64_t)ntohl(*((const uint32_t *)(p) + 1))) << 0)); } #endif /* LBL_ALIGN */ #define EXTRACT_24BITS(p) \ - ((u_int32_t)((u_int32_t)*((const u_int8_t *)(p) + 0) << 16 | \ - (u_int32_t)*((const u_int8_t *)(p) + 1) << 8 | \ - (u_int32_t)*((const u_int8_t *)(p) + 2))) + ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 0)) << 16) | \ + ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \ + ((uint32_t)(*((const uint8_t *)(p) + 2)) << 0))) + +#define EXTRACT_40BITS(p) \ + ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 32) | \ + ((uint64_t)(*((const uint8_t *)(p) + 1)) << 24) | \ + ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \ + ((uint64_t)(*((const uint8_t *)(p) + 3)) << 8) | \ + ((uint64_t)(*((const uint8_t *)(p) + 4)) << 0))) + +#define EXTRACT_48BITS(p) \ + ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 40) | \ + ((uint64_t)(*((const uint8_t *)(p) + 1)) << 32) | \ + ((uint64_t)(*((const uint8_t *)(p) + 2)) << 24) | \ + ((uint64_t)(*((const uint8_t *)(p) + 3)) << 16) | \ + ((uint64_t)(*((const uint8_t *)(p) + 4)) << 8) | \ + ((uint64_t)(*((const uint8_t *)(p) + 5)) << 0))) + +#define EXTRACT_56BITS(p) \ + ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 0)) << 48) | \ + ((uint64_t)(*((const uint8_t *)(p) + 1)) << 40) | \ + ((uint64_t)(*((const uint8_t *)(p) + 2)) << 32) | \ + ((uint64_t)(*((const uint8_t *)(p) + 3)) << 24) | \ + ((uint64_t)(*((const uint8_t *)(p) + 4)) << 16) | \ + ((uint64_t)(*((const uint8_t *)(p) + 5)) << 8) | \ + ((uint64_t)(*((const uint8_t *)(p) + 6)) << 0))) /* * Macros to extract possibly-unaligned little-endian integral values. @@ -171,23 +195,50 @@ EXTRACT_64BITS(const void *p) */ #define EXTRACT_LE_8BITS(p) (*(p)) #define EXTRACT_LE_16BITS(p) \ - ((u_int16_t)((u_int16_t)*((const u_int8_t *)(p) + 1) << 8 | \ - (u_int16_t)*((const u_int8_t *)(p) + 0))) + ((uint16_t)(((uint16_t)(*((const uint8_t *)(p) + 1)) << 8) | \ + ((uint16_t)(*((const uint8_t *)(p) + 0)) << 0))) #define EXTRACT_LE_32BITS(p) \ - ((u_int32_t)((u_int32_t)*((const u_int8_t *)(p) + 3) << 24 | \ - (u_int32_t)*((const u_int8_t *)(p) + 2) << 16 | \ - (u_int32_t)*((const u_int8_t *)(p) + 1) << 8 | \ - (u_int32_t)*((const u_int8_t *)(p) + 0))) + ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 3)) << 24) | \ + ((uint32_t)(*((const uint8_t *)(p) + 2)) << 16) | \ + ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \ + ((uint32_t)(*((const uint8_t *)(p) + 0)) << 0))) #define EXTRACT_LE_24BITS(p) \ - ((u_int32_t)((u_int32_t)*((const u_int8_t *)(p) + 2) << 16 | \ - (u_int32_t)*((const u_int8_t *)(p) + 1) << 8 | \ - (u_int32_t)*((const u_int8_t *)(p) + 0))) + ((uint32_t)(((uint32_t)(*((const uint8_t *)(p) + 2)) << 16) | \ + ((uint32_t)(*((const uint8_t *)(p) + 1)) << 8) | \ + ((uint32_t)(*((const uint8_t *)(p) + 0)) << 0))) #define EXTRACT_LE_64BITS(p) \ - ((u_int64_t)((u_int64_t)*((const u_int8_t *)(p) + 7) << 56 | \ - (u_int64_t)*((const u_int8_t *)(p) + 6) << 48 | \ - (u_int64_t)*((const u_int8_t *)(p) + 5) << 40 | \ - (u_int64_t)*((const u_int8_t *)(p) + 4) << 32 | \ - (u_int64_t)*((const u_int8_t *)(p) + 3) << 24 | \ - (u_int64_t)*((const u_int8_t *)(p) + 2) << 16 | \ - (u_int64_t)*((const u_int8_t *)(p) + 1) << 8 | \ - (u_int64_t)*((const u_int8_t *)(p) + 0))) + ((uint64_t)(((uint64_t)(*((const uint8_t *)(p) + 7)) << 56) | \ + ((uint64_t)(*((const uint8_t *)(p) + 6)) << 48) | \ + ((uint64_t)(*((const uint8_t *)(p) + 5)) << 40) | \ + ((uint64_t)(*((const uint8_t *)(p) + 4)) << 32) | \ + ((uint64_t)(*((const uint8_t *)(p) + 3)) << 24) | \ + ((uint64_t)(*((const uint8_t *)(p) + 2)) << 16) | \ + ((uint64_t)(*((const uint8_t *)(p) + 1)) << 8) | \ + ((uint64_t)(*((const uint8_t *)(p) + 0)) << 0))) + +/* + * Macros to check the presence of the values in question. + */ +#define ND_TTEST_8BITS(p) ND_TTEST2(*(p), 1) +#define ND_TCHECK_8BITS(p) ND_TCHECK2(*(p), 1) + +#define ND_TTEST_16BITS(p) ND_TTEST2(*(p), 2) +#define ND_TCHECK_16BITS(p) ND_TCHECK2(*(p), 2) + +#define ND_TTEST_24BITS(p) ND_TTEST2(*(p), 3) +#define ND_TCHECK_24BITS(p) ND_TCHECK2(*(p), 3) + +#define ND_TTEST_32BITS(p) ND_TTEST2(*(p), 4) +#define ND_TCHECK_32BITS(p) ND_TCHECK2(*(p), 4) + +#define ND_TTEST_40BITS(p) ND_TTEST2(*(p), 5) +#define ND_TCHECK_40BITS(p) ND_TCHECK2(*(p), 5) + +#define ND_TTEST_48BITS(p) ND_TTEST2(*(p), 6) +#define ND_TCHECK_48BITS(p) ND_TCHECK2(*(p), 6) + +#define ND_TTEST_56BITS(p) ND_TTEST2(*(p), 7) +#define ND_TCHECK_56BITS(p) ND_TCHECK2(*(p), 7) + +#define ND_TTEST_64BITS(p) ND_TTEST2(*(p), 8) +#define ND_TCHECK_64BITS(p) ND_TCHECK2(*(p), 8)