bsd/netinet/cpu_in_cksum.c

87  * of the inner loop. After each iteration of the inner loop, a partial
97 	uint32_t sum, partial;
140 		partial = 0;
145 			partial = *data << 8;
147 			partial = *data;
155 			partial += *(uint16_t *)(void *)data;
156 			partial += *(uint16_t *)(void *)(data + 2);
157 			partial += *(uint16_t *)(void *)(data + 4);
158 			partial += *(uint16_t *)(void *)(data + 6);
159 			partial += *(uint16_t *)(void *)(data + 8);
160 			partial += *(uint16_t *)(void *)(data + 10);
161 			partial += *(uint16_t *)(void *)(data + 12);
162 			partial += *(uint16_t *)(void *)(data + 14);
163 			partial += *(uint16_t *)(void *)(data + 16);
164 			partial += *(uint16_t *)(void *)(data + 18);
165 			partial += *(uint16_t *)(void *)(data + 20);
166 			partial += *(uint16_t *)(void *)(data + 22);
167 			partial += *(uint16_t *)(void *)(data + 24);
168 			partial += *(uint16_t *)(void *)(data + 26);
169 			partial += *(uint16_t *)(void *)(data + 28);
170 			partial += *(uint16_t *)(void *)(data + 30);
173 			if (PREDICT_FALSE(partial & 0xc0000000)) {
175 					partial = (partial << 8) +
176 					    (partial >> 24);
177 				sum += (partial >> 16);
178 				sum += (partial & 0xffff);
179 				partial = 0;
183 			partial += *(uint16_t *)(void *)data;
184 			partial += *(uint16_t *)(void *)(data + 2);
185 			partial += *(uint16_t *)(void *)(data + 4);
186 			partial += *(uint16_t *)(void *)(data + 6);
187 			partial += *(uint16_t *)(void *)(data + 8);
188 			partial += *(uint16_t *)(void *)(data + 10);
189 			partial += *(uint16_t *)(void *)(data + 12);
190 			partial += *(uint16_t *)(void *)(data + 14);
199 			partial += *(uint16_t *)(void *)data;
200 			partial += *(uint16_t *)(void *)(data + 2);
201 			partial += *(uint16_t *)(void *)(data + 4);
202 			partial += *(uint16_t *)(void *)(data + 6);
206 			partial += *(uint16_t *)(void *)data;
207 			partial += *(uint16_t *)(void *)(data + 2);
211 			partial += *(uint16_t *)(void *)data;
216 			partial += *data;
218 			partial += *data << 8;
224 			partial = (partial << 8) + (partial >> 24);
225 		sum += (partial >> 16) + (partial & 0xffff);
243 	uint64_t sum, partial;
286 		partial = 0;
291 			partial = *data << 8;
293 			partial = *data;
302 			partial += *(uint16_t *)(void *)data;
309 			partial += *(uint32_t *)(void *)data;
310 			partial += *(uint32_t *)(void *)(data + 4);
311 			partial += *(uint32_t *)(void *)(data + 8);
312 			partial += *(uint32_t *)(void *)(data + 12);
313 			partial += *(uint32_t *)(void *)(data + 16);
314 			partial += *(uint32_t *)(void *)(data + 20);
315 			partial += *(uint32_t *)(void *)(data + 24);
316 			partial += *(uint32_t *)(void *)(data + 28);
317 			partial += *(uint32_t *)(void *)(data + 32);
318 			partial += *(uint32_t *)(void *)(data + 36);
319 			partial += *(uint32_t *)(void *)(data + 40);
320 			partial += *(uint32_t *)(void *)(data + 44);
321 			partial += *(uint32_t *)(void *)(data + 48);
322 			partial += *(uint32_t *)(void *)(data + 52);
323 			partial += *(uint32_t *)(void *)(data + 56);
324 			partial += *(uint32_t *)(void *)(data + 60);
327 			if (PREDICT_FALSE(partial & (3ULL << 62))) {
329 					partial = (partial << 8) +
330 					    (partial >> 56);
331 				sum += (partial >> 32);
332 				sum += (partial & 0xffffffff);
333 				partial = 0;
341 			partial += *(uint32_t *)(void *)data;
342 			partial += *(uint32_t *)(void *)(data + 4);
343 			partial += *(uint32_t *)(void *)(data + 8);
344 			partial += *(uint32_t *)(void *)(data + 12);
345 			partial += *(uint32_t *)(void *)(data + 16);
346 			partial += *(uint32_t *)(void *)(data + 20);
347 			partial += *(uint32_t *)(void *)(data + 24);
348 			partial += *(uint32_t *)(void *)(data + 28);
352 			partial += *(uint32_t *)(void *)data;
353 			partial += *(uint32_t *)(void *)(data + 4);
354 			partial += *(uint32_t *)(void *)(data + 8);
355 			partial += *(uint32_t *)(void *)(data + 12);
359 			partial += *(uint32_t *)(void *)data;
360 			partial += *(uint32_t *)(void *)(data + 4);
364 			partial += *(uint32_t *)(void *)data;
368 			partial += *(uint16_t *)(void *)data;
374 			partial += *data;
376 			partial += *data << 8;
382 			partial = (partial << 8) + (partial >> 56);
383 		sum += (partial >> 32) + (partial & 0xffffffff);