172 static void sip_round(struct siphash *H, const int rounds) {  in sip_round()  argument
176 		H->v0 += H->v1;  in sip_round()
177 		H->v1 = SIP_ROTL(H->v1, 13);  in sip_round()
178 		H->v1 ^= H->v0;  in sip_round()
179 		H->v0 = SIP_ROTL(H->v0, 32);  in sip_round()
181 		H->v2 += H->v3;  in sip_round()
182 		H->v3 = SIP_ROTL(H->v3, 16);  in sip_round()
183 		H->v3 ^= H->v2;  in sip_round()
185 		H->v0 += H->v3;  in sip_round()
186 		H->v3 = SIP_ROTL(H->v3, 21);  in sip_round()
187 		H->v3 ^= H->v0;  in sip_round()
189 		H->v2 += H->v1;  in sip_round()
190 		H->v1 = SIP_ROTL(H->v1, 17);  in sip_round()
191 		H->v1 ^= H->v2;  in sip_round()
192 		H->v2 = SIP_ROTL(H->v2, 32);  in sip_round()
197 static struct siphash *sip24_init(struct siphash *H,  in sip24_init()  argument
199 	H->v0 = _SIP_ULL(0x736f6d65U, 0x70736575U) ^ key->k[0];  in sip24_init()
200 	H->v1 = _SIP_ULL(0x646f7261U, 0x6e646f6dU) ^ key->k[1];  in sip24_init()
201 	H->v2 = _SIP_ULL(0x6c796765U, 0x6e657261U) ^ key->k[0];  in sip24_init()
202 	H->v3 = _SIP_ULL(0x74656462U, 0x79746573U) ^ key->k[1];  in sip24_init()
204 	H->p = H->buf;  in sip24_init()
205 	H->c = 0;  in sip24_init()
207 	return H;  in sip24_init()
213 static struct siphash *sip24_update(struct siphash *H, const void *src,  in sip24_update()  argument
219 		while (p < pe && H->p < sip_endof(H->buf))  in sip24_update()
220 			*H->p++ = *p++;  in sip24_update()
222 		if (H->p < sip_endof(H->buf))  in sip24_update()
225 		m = SIP_U8TO64_LE(H->buf);  in sip24_update()
226 		H->v3 ^= m;  in sip24_update()
227 		sip_round(H, 2);  in sip24_update()
228 		H->v0 ^= m;  in sip24_update()
230 		H->p = H->buf;  in sip24_update()
231 		H->c += 8;  in sip24_update()
234 	return H;  in sip24_update()
238 static uint64_t sip24_final(struct siphash *H) {  in sip24_final()  argument
239 	const char left = (char)(H->p - H->buf);  in sip24_final()
240 	uint64_t b = (H->c + left) << 56;  in sip24_final()
243 	case 7: b |= (uint64_t)H->buf[6] << 48;  in sip24_final()
245 	case 6: b |= (uint64_t)H->buf[5] << 40;  in sip24_final()
247 	case 5: b |= (uint64_t)H->buf[4] << 32;  in sip24_final()
249 	case 4: b |= (uint64_t)H->buf[3] << 24;  in sip24_final()
251 	case 3: b |= (uint64_t)H->buf[2] << 16;  in sip24_final()
253 	case 2: b |= (uint64_t)H->buf[1] << 8;  in sip24_final()
255 	case 1: b |= (uint64_t)H->buf[0] << 0;  in sip24_final()
260 	H->v3 ^= b;  in sip24_final()
261 	sip_round(H, 2);  in sip24_final()
262 	H->v0 ^= b;  in sip24_final()
263 	H->v2 ^= 0xff;  in sip24_final()
264 	sip_round(H, 4);  in sip24_final()
266 	return H->v0 ^ H->v1 ^ H->v2  ^ H->v3;  in sip24_final()