2 * Copyright (c) 2008, 2009 Nicira Networks.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 /* Returns the hash of the 'n' 32-bit words at 'p', starting from 'basis'.
21 * 'p' must be properly aligned. */
23 hash_words(const uint32_t *p, size_t n, uint32_t basis)
27 a = b = c = 0xdeadbeef + (((uint32_t) n) << 2) + basis;
55 /* Returns the hash of the 'n' bytes at 'p', starting from 'basis'. */
57 hash_bytes(const void *p_, size_t n, uint32_t basis)
59 const uint8_t *p = p_;
63 a = b = c = 0xdeadbeef + n + basis;
65 while (n >= sizeof tmp) {
66 memcpy(tmp, p, sizeof tmp);
76 tmp[0] = tmp[1] = tmp[2] = 0;