diff options
Diffstat (limited to 'tools/lib/bpf/libbpf.c')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index f92083f51bdb..dd3b2f57082d 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -35,7 +35,6 @@ #include <linux/perf_event.h> #include <linux/bpf_perf_event.h> #include <linux/ring_buffer.h> -#include <linux/unaligned.h> #include <sys/epoll.h> #include <sys/ioctl.h> #include <sys/mman.h> @@ -51,7 +50,6 @@ #include "libbpf.h" #include "bpf.h" #include "btf.h" -#include "str_error.h" #include "libbpf_internal.h" #include "hashmap.h" #include "bpf_gen_internal.h" @@ -319,8 +317,6 @@ static void pr_perm_msg(int err) buf); } -#define STRERR_BUFSIZE 128 - /* Copied from tools/perf/util/util.h */ #ifndef zfree # define zfree(ptr) ({ free(*ptr); *ptr = NULL; }) @@ -14285,100 +14281,3 @@ void bpf_object__destroy_skeleton(struct bpf_object_skeleton *s) free(s->progs); free(s); } - -static inline __u32 ror32(__u32 v, int bits) -{ - return (v >> bits) | (v << (32 - bits)); -} - -#define SHA256_BLOCK_LENGTH 64 -#define Ch(x, y, z) (((x) & (y)) ^ (~(x) & (z))) -#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z))) -#define Sigma_0(x) (ror32((x), 2) ^ ror32((x), 13) ^ ror32((x), 22)) -#define Sigma_1(x) (ror32((x), 6) ^ ror32((x), 11) ^ ror32((x), 25)) -#define sigma_0(x) (ror32((x), 7) ^ ror32((x), 18) ^ ((x) >> 3)) -#define sigma_1(x) (ror32((x), 17) ^ ror32((x), 19) ^ ((x) >> 10)) - -static const __u32 sha256_K[64] = { - 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, - 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, - 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786, - 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, - 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, - 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, - 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b, - 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, - 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, - 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, - 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2, -}; - -#define SHA256_ROUND(i, a, b, c, d, e, f, g, h) \ - { \ - __u32 tmp = h + Sigma_1(e) + Ch(e, f, g) + sha256_K[i] + w[i]; \ - d += tmp; \ - h = tmp + Sigma_0(a) + Maj(a, b, c); \ - } - -static void sha256_blocks(__u32 state[8], const __u8 *data, size_t nblocks) -{ - while (nblocks--) { - __u32 a = state[0]; - __u32 b = state[1]; - __u32 c = state[2]; - __u32 d = state[3]; - __u32 e = state[4]; - __u32 f = state[5]; - __u32 g = state[6]; - __u32 h = state[7]; - __u32 w[64]; - int i; - - for (i = 0; i < 16; i++) - w[i] = get_unaligned_be32(&data[4 * i]); - for (; i < ARRAY_SIZE(w); i++) - w[i] = sigma_1(w[i - 2]) + w[i - 7] + - sigma_0(w[i - 15]) + w[i - 16]; - for (i = 0; i < ARRAY_SIZE(w); i += 8) { - SHA256_ROUND(i + 0, a, b, c, d, e, f, g, h); - SHA256_ROUND(i + 1, h, a, b, c, d, e, f, g); - SHA256_ROUND(i + 2, g, h, a, b, c, d, e, f); - SHA256_ROUND(i + 3, f, g, h, a, b, c, d, e); - SHA256_ROUND(i + 4, e, f, g, h, a, b, c, d); - SHA256_ROUND(i + 5, d, e, f, g, h, a, b, c); - SHA256_ROUND(i + 6, c, d, e, f, g, h, a, b); - SHA256_ROUND(i + 7, b, c, d, e, f, g, h, a); - } - state[0] += a; - state[1] += b; - state[2] += c; - state[3] += d; - state[4] += e; - state[5] += f; - state[6] += g; - state[7] += h; - data += SHA256_BLOCK_LENGTH; - } -} - -void libbpf_sha256(const void *data, size_t len, __u8 out[SHA256_DIGEST_LENGTH]) -{ - __u32 state[8] = { 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, - 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 }; - const __be64 bitcount = cpu_to_be64((__u64)len * 8); - __u8 final_data[2 * SHA256_BLOCK_LENGTH] = { 0 }; - size_t final_len = len % SHA256_BLOCK_LENGTH; - int i; - - sha256_blocks(state, data, len / SHA256_BLOCK_LENGTH); - - memcpy(final_data, data + len - final_len, final_len); - final_data[final_len] = 0x80; - final_len = round_up(final_len + 9, SHA256_BLOCK_LENGTH); - memcpy(&final_data[final_len - 8], &bitcount, 8); - - sha256_blocks(state, final_data, final_len / SHA256_BLOCK_LENGTH); - - for (i = 0; i < ARRAY_SIZE(state); i++) - put_unaligned_be32(state[i], &out[4 * i]); -} |