| /linux-6.15/drivers/firmware/efi/libstub/ |
| D | random.c | 53 * efi_random_get_seed() - provide random seed as configuration table
70 struct linux_efi_random_seed *prev_seed, *seed = NULL; in efi_random_get_seed() local
88 * Check whether a seed was provided by a prior boot stage. In that in efi_random_get_seed()
91 * Note that we should read the seed size with caution, in case the in efi_random_get_seed()
102 * allocation will survive a kexec reboot (although we refresh the seed in efi_random_get_seed()
106 struct_size(seed, bits, seed_size), in efi_random_get_seed()
107 (void **)&seed); in efi_random_get_seed()
109 efi_warn("Failed to allocate memory for RNG seed.\n"); in efi_random_get_seed()
115 EFI_RANDOM_SEED_SIZE, seed->bits); in efi_random_get_seed()
123 EFI_RANDOM_SEED_SIZE, seed->bits); in efi_random_get_seed()
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| D | zboot.c | 66 u32 seed = U32_MAX; in efi_zboot_entry() local
69 // Setting the random seed to 0x0 is the same as in efi_zboot_entry()
71 seed = 0; in efi_zboot_entry()
75 status = efi_get_random_bytes(sizeof(seed), (u8 *)&seed); in efi_zboot_entry()
87 seed, EFI_LOADER_CODE, 0, EFI_ALLOC_LIMIT); in efi_zboot_entry()
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| /linux-6.15/include/crypto/ |
| D | rng.h | 26 * @seed: Seed or reseed the random number generator. With the
29 * random number generator requires a seed for setting
30 * up a new state, the seed must be provided by the
32 * size of the seed is defined with @seedsize .
35 * @seedsize: The seed size required for a random number generator
37 * random number generators does not require a seed
40 * the seed size is set to zero.
47 int (*seed)(struct crypto_rng *tfm, const u8 *seed, unsigned int slen); member
169 * @seed: seed input data
170 * @slen: length of the seed input data
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| /linux-6.15/include/linux/ |
| D | prandom.h | 36 * prandom_seed_state - set seed for prandom_u32_state().
37 * @state: pointer to state structure to receive the seed.
38 * @seed: arbitrary 64-bit value to use as a seed.
40 static inline void prandom_seed_state(struct rnd_state *state, u64 seed) in prandom_seed_state() argument
42 u32 i = ((seed >> 32) ^ (seed << 10) ^ seed) & 0xffffffffUL; in prandom_seed_state()
51 static inline u32 next_pseudo_random32(u32 seed) in next_pseudo_random32() argument
53 return seed * 1664525 + 1013904223; in next_pseudo_random32()
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| D | xxhash.h | 85 * xxh32() - calculate the 32-bit hash of the input with a given seed.
89 * @seed: The seed can be used to alter the result predictably.
95 uint32_t xxh32(const void *input, size_t length, uint32_t seed);
98 * xxh64() - calculate the 64-bit hash of the input with a given seed.
102 * @seed: The seed can be used to alter the result predictably.
108 uint64_t xxh64(const void *input, size_t length, uint64_t seed);
111 * xxhash() - calculate wordsize hash of the input with a given seed
114 * @seed: The seed can be used to alter the result predictably.
124 uint64_t seed) in xxhash() argument
127 return xxh64(input, length, seed); in xxhash()
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| /linux-6.15/tools/testing/selftests/bpf/prog_tests/ |
| D | test_csum_diff.c | 13 unsigned short seed; member
27 .seed = 0,
38 .seed = 0x1234,
49 .seed = 0x1234,
126 .seed = 0xffff,
141 .seed = 0,
152 .seed = 0x1234,
163 .seed = 0x1234,
240 .seed = 0xffff,
257 .seed = 0,
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| /linux-6.15/drivers/crypto/allwinner/sun8i-ss/ |
| D | sun8i-ss-prng.c | 19 int sun8i_ss_prng_seed(struct crypto_rng *tfm, const u8 *seed, in sun8i_ss_prng_seed() argument
24 if (ctx->seed && ctx->slen != slen) { in sun8i_ss_prng_seed()
25 kfree_sensitive(ctx->seed); in sun8i_ss_prng_seed()
27 ctx->seed = NULL; in sun8i_ss_prng_seed()
29 if (!ctx->seed) in sun8i_ss_prng_seed()
30 ctx->seed = kmalloc(slen, GFP_KERNEL); in sun8i_ss_prng_seed()
31 if (!ctx->seed) in sun8i_ss_prng_seed()
34 memcpy(ctx->seed, seed, slen); in sun8i_ss_prng_seed()
52 kfree_sensitive(ctx->seed); in sun8i_ss_prng_exit()
53 ctx->seed = NULL; in sun8i_ss_prng_exit()
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| /linux-6.15/drivers/crypto/allwinner/sun8i-ce/ |
| D | sun8i-ce-prng.c | 29 kfree_sensitive(ctx->seed); in sun8i_ce_prng_exit()
30 ctx->seed = NULL; in sun8i_ce_prng_exit()
34 int sun8i_ce_prng_seed(struct crypto_rng *tfm, const u8 *seed, in sun8i_ce_prng_seed() argument
39 if (ctx->seed && ctx->slen != slen) { in sun8i_ce_prng_seed()
40 kfree_sensitive(ctx->seed); in sun8i_ce_prng_seed()
42 ctx->seed = NULL; in sun8i_ce_prng_seed()
44 if (!ctx->seed) in sun8i_ce_prng_seed()
45 ctx->seed = kmalloc(slen, GFP_KERNEL | GFP_DMA); in sun8i_ce_prng_seed()
46 if (!ctx->seed) in sun8i_ce_prng_seed()
49 memcpy(ctx->seed, seed, slen); in sun8i_ce_prng_seed()
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| /linux-6.15/scripts/basic/ |
| D | Makefile | 7 # randstruct: the seed is needed before building the gcc-plugin or
9 gen-randstruct-seed := $(srctree)/scripts/gen-randstruct-seed.sh
12 $(CONFIG_SHELL) $(gen-randstruct-seed) \
14 $(obj)/randstruct.seed: $(gen-randstruct-seed) FORCE
16 always-$(CONFIG_RANDSTRUCT) += randstruct.seed
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| /linux-6.15/lib/ |
| D | xxhash.c | 94 static uint32_t xxh32_round(uint32_t seed, const uint32_t input) in xxh32_round() argument
96 seed += input * PRIME32_2; in xxh32_round()
97 seed = xxh_rotl32(seed, 13); in xxh32_round()
98 seed *= PRIME32_1; in xxh32_round()
99 return seed; in xxh32_round()
102 uint32_t xxh32(const void *input, const size_t len, const uint32_t seed) in xxh32() argument
110 uint32_t v1 = seed + PRIME32_1 + PRIME32_2; in xxh32()
111 uint32_t v2 = seed + PRIME32_2; in xxh32()
112 uint32_t v3 = seed + 0; in xxh32()
113 uint32_t v4 = seed - PRIME32_1; in xxh32()
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| /linux-6.15/arch/arm64/kernel/pi/ |
| D | kaslr_early.c | 25 static char const seed_str[] __initconst = "kaslr-seed"; in get_kaslr_seed()
44 u64 seed, range; in kaslr_early_init() local
49 seed = get_kaslr_seed(fdt, chosen); in kaslr_early_init()
50 if (!seed) { in kaslr_early_init()
52 !__arm64_rndr((unsigned long *)&seed)) in kaslr_early_init()
56 memstart_offset_seed = seed & U16_MAX; in kaslr_early_init()
60 * kernel image offset from the seed. Let's place the kernel in the in kaslr_early_init()
65 return range / 2 + (((__uint128_t)range * seed) >> 64); in kaslr_early_init()
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| /linux-6.15/drivers/crypto/ |
| D | exynos-rng.c | 40 /* Five seed and output registers, each 4 bytes */
52 * backtracking of the original seed.
54 * Time for next re-seed in ms.
98 const u8 *seed, unsigned int slen) in exynos_rng_set_seed() argument
103 /* Round seed length because loop iterates over full register size */ in exynos_rng_set_seed()
112 val = seed[i] << 24; in exynos_rng_set_seed()
113 val |= seed[i + 1] << 16; in exynos_rng_set_seed()
114 val |= seed[i + 2] << 8; in exynos_rng_set_seed()
115 val |= seed[i + 3] << 0; in exynos_rng_set_seed()
122 dev_warn(rng->dev, "Seed setting not finished\n"); in exynos_rng_set_seed()
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| /linux-6.15/arch/x86/tools/ |
| D | insn_sanity.c | 33 static unsigned int seed; /* Random seed */ variable
42 fprintf(stderr, "Usage: %s [-y|-n|-v] [-s seed[,no]] [-m max] [-i input]\n", prog); in usage()
46 fprintf(stderr, "\t-s Give a random seed (and iteration number)\n"); in usage()
100 /* Give a seed and iteration number */ in dump_stream()
101 fprintf(fp, " $ %s -s 0x%x,%lu\n", prog, seed, nr_iter); in dump_stream()
113 if (read(fd, &seed, sizeof(seed)) != sizeof(seed)) in init_random_seed()
185 seed = (unsigned int)strtoul(optarg, &tmp, 0); in parse_args()
191 usage("Failed to parse seed"); in parse_args()
209 usage("Don't use input file (-i) with random seed (-s)"); in parse_args()
211 /* Initialize random seed */ in parse_args()
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| /linux-6.15/tools/include/linux/ |
| D | prandom.h | 20 * prandom_seed_state - set seed for prandom_u32_state().
21 * @state: pointer to state structure to receive the seed.
22 * @seed: arbitrary 64-bit value to use as a seed.
24 static inline void prandom_seed_state(struct rnd_state *state, u64 seed) in prandom_seed_state() argument
26 u32 i = ((seed >> 32) ^ (seed << 10) ^ seed) & 0xffffffffUL; in prandom_seed_state()
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| /linux-6.15/drivers/char/hw_random/ |
| D | hisi-rng.c | 27 MODULE_PARM_DESC(seed_sel, "Auto reload seed. 0, use LFSR(default); 1, use ring oscillator.");
38 u32 seed; in hisi_rng_init() local
40 /* get a random number as initial seed */ in hisi_rng_init()
41 get_random_bytes(&seed, sizeof(seed)); in hisi_rng_init()
43 writel_relaxed(seed, hrng->base + RNG_SEED); in hisi_rng_init()
46 * The seed is reload periodically, there are two choice in hisi_rng_init()
47 * of seeds, default seed using the value from LFSR, or in hisi_rng_init()
48 * will use seed generated by ring oscillator. in hisi_rng_init()
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| /linux-6.15/kernel/trace/ |
| D | trace_benchmark.c | 43 u64 seed; in trace_do_benchmark() local
115 * as our seed to find the std. in trace_do_benchmark()
123 seed = avg; in trace_do_benchmark()
125 last_seed = seed; in trace_do_benchmark()
126 seed = stddev; in trace_do_benchmark()
129 seed = div64_u64(seed, last_seed); in trace_do_benchmark()
130 seed += last_seed; in trace_do_benchmark()
131 do_div(seed, 2); in trace_do_benchmark()
132 } while (i++ < 10 && last_seed != seed); in trace_do_benchmark()
134 std = seed; in trace_do_benchmark()
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| /linux-6.15/drivers/crypto/allwinner/sun4i-ss/ |
| D | sun4i-ss-prng.c | 4 int sun4i_ss_prng_seed(struct crypto_rng *tfm, const u8 *seed, in sun4i_ss_prng_seed() argument
11 memcpy(algt->ss->seed, seed, slen); in sun4i_ss_prng_seed()
46 /* write the seed */ in sun4i_ss_prng_generate()
48 writel(ss->seed[i], ss->base + SS_KEY0 + i * 4); in sun4i_ss_prng_generate()
56 /* Update the seed */ in sun4i_ss_prng_generate()
59 ss->seed[i] = v; in sun4i_ss_prng_generate()
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| /linux-6.15/block/ |
| D | t10-pi.c | 18 sector_t seed; member
54 pi->ref_tag = cpu_to_be32(lower_32_bits(iter->seed)); in t10_pi_generate()
60 iter->seed++; in t10_pi_generate()
79 lower_32_bits(iter->seed)) { in t10_pi_verify()
83 iter->seed, be32_to_cpu(pi->ref_tag)); in t10_pi_verify()
101 (unsigned long long)iter->seed, in t10_pi_verify()
109 iter->seed++; in t10_pi_verify()
232 put_unaligned_be48(iter->seed, pi->ref_tag); in ext_pi_crc64_generate()
238 iter->seed++; in ext_pi_crc64_generate()
257 u64 ref, seed; in ext_pi_crc64_verify() local
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| /linux-6.15/lib/tests/ |
| D | test_hash.c | 24 /* 32-bit XORSHIFT generator. Seed must not be zero. */
26 xorshift(u32 seed) in xorshift() argument
28 seed ^= seed << 13; in xorshift()
29 seed ^= seed >> 17; in xorshift()
30 seed ^= seed << 5; in xorshift()
31 return seed; in xorshift()
46 static void fill_buf(char *buf, size_t len, u32 seed) in fill_buf() argument
51 seed = xorshift(seed); in fill_buf()
52 buf[i] = mod255(seed); in fill_buf()
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| /linux-6.15/drivers/firmware/efi/ |
| D | efi.c | 728 struct linux_efi_random_seed *seed; in efi_config_parse_tables() local
731 seed = early_memremap(efi_rng_seed, sizeof(*seed)); in efi_config_parse_tables()
732 if (seed != NULL) { in efi_config_parse_tables()
733 size = min_t(u32, seed->size, SZ_1K); // sanity check in efi_config_parse_tables()
734 early_memunmap(seed, sizeof(*seed)); in efi_config_parse_tables()
736 pr_err("Could not map UEFI random seed!\n"); in efi_config_parse_tables()
739 seed = early_memremap(efi_rng_seed, in efi_config_parse_tables()
740 sizeof(*seed) + size); in efi_config_parse_tables()
741 if (seed != NULL) { in efi_config_parse_tables()
742 add_bootloader_randomness(seed->bits, size); in efi_config_parse_tables()
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| /linux-6.15/arch/powerpc/mm/nohash/ |
| D | kaslr_booke.c | 85 prop = fdt_getprop_w(fdt, node, "kaslr-seed", &len); in get_kaslr_seed()
288 u64 seed; in kaslr_choose_location() local
297 seed = get_tb() << 32; in kaslr_choose_location()
298 seed ^= get_tb(); in kaslr_choose_location()
299 random = rotate_xor(random, &seed, sizeof(seed)); in kaslr_choose_location()
302 * Retrieve (and wipe) the seed from the FDT in kaslr_choose_location()
304 seed = get_kaslr_seed(dt_ptr); in kaslr_choose_location()
305 if (seed) in kaslr_choose_location()
306 random = rotate_xor(random, &seed, sizeof(seed)); in kaslr_choose_location()
308 pr_warn("KASLR: No safe seed for randomizing the kernel base.\n"); in kaslr_choose_location()
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| /linux-6.15/crypto/ |
| D | ansi_cprng.c | 33 * V is our seed vector
359 * This is the cprng_registered reset method the seed value is
362 * as being present by testing the length of the seed
365 const u8 *seed, unsigned int slen) in cprng_reset() argument
368 const u8 *key = seed + DEFAULT_BLK_SZ; in cprng_reset()
377 reset_prng_context(prng, key, DEFAULT_PRNG_KSZ, seed, dt); in cprng_reset()
395 const u8 *seed, unsigned int slen) in fips_cprng_reset() argument
398 const u8 *key = seed + DEFAULT_BLK_SZ; in fips_cprng_reset()
406 /* fips strictly requires seed != key */ in fips_cprng_reset()
407 if (!memcmp(seed, key, DEFAULT_PRNG_KSZ)) in fips_cprng_reset()
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| D | xxhash_generic.c | 13 u64 seed; member
25 if (keylen != sizeof(tctx->seed)) in xxhash64_setkey()
27 tctx->seed = get_unaligned_le64(key); in xxhash64_setkey()
36 xxh64_reset(&dctx->xxhstate, tctx->seed); in xxhash64_init()
65 put_unaligned_le64(xxh64(data, length, tctx->seed), out); in xxhash64_digest()
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| /linux-6.15/tools/testing/selftests/net/forwarding/ |
| D | router_mpath_seed.sh | 181 check_err $? "mpath seed written as $seed_w, but read as $seed_r"
184 log_test "mpath seed set/get"
223 local seed=$1; shift
226 sysctl -qw net.ipv4.fib_multipath_hash_seed=$seed
251 log_test "mpath seed $what"
271 local seed=$1; shift
276 check_err $? "seed $seed: active NH moved from $act_0 to $act_1 after seed change"
291 # Initial active NH before touching the seed at all.
307 log_test "mpath seed stability $what"
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| /linux-6.15/fs/nilfs2/ |
| D | segbuf.c | 176 nilfs_segbuf_fill_in_segsum_crc(struct nilfs_segment_buffer *segbuf, u32 seed) in nilfs_segbuf_fill_in_segsum_crc() argument
188 crc = crc32_le(seed, in nilfs_segbuf_fill_in_segsum_crc()
204 u32 seed) in nilfs_segbuf_fill_in_data_crc() argument
213 crc = crc32_le(seed, in nilfs_segbuf_fill_in_data_crc()
235 u32 seed) in nilfs_segbuf_fill_in_super_root_crc() argument
244 crc = crc32_le(seed, in nilfs_segbuf_fill_in_super_root_crc()
320 * @seed: checksum seed value
322 void nilfs_add_checksums_on_logs(struct list_head *logs, u32 seed) in nilfs_add_checksums_on_logs() argument
328 nilfs_segbuf_fill_in_super_root_crc(segbuf, seed); in nilfs_add_checksums_on_logs()
329 nilfs_segbuf_fill_in_segsum_crc(segbuf, seed); in nilfs_add_checksums_on_logs()
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