xref: /dpdk/app/test/test_cryptodev_security_pdcp.c (revision 1cde1b9a9b4dbf31cb5e5ccdfc5da3cb079f43a2)
1 /* SPDX-License-Identifier: BSD-3-Clause
2  *
3  * Copyright (C) 2015-2016 Freescale Semiconductor,Inc.
4  * Copyright 2018-2019 NXP
5  */
6 
7 #include <time.h>
8 
9 #include <rte_common.h>
10 #include <rte_hexdump.h>
11 #include <rte_mbuf.h>
12 #include <rte_malloc.h>
13 #include <rte_memcpy.h>
14 #include <rte_pause.h>
15 #include <rte_bus_vdev.h>
16 #include <rte_byteorder.h>
17 
18 #include <rte_crypto.h>
19 #include <rte_cryptodev.h>
20 #include <rte_cryptodev_pmd.h>
21 #include <rte_security.h>
22 
23 #include <rte_lcore.h>
24 #include "test.h"
25 #include "test_cryptodev_security_pdcp_test_func.h"
26 
27 static int cplane_encap(uint32_t sn_size, uint8_t dir,
28 			enum enc_alg_off enc_alg_off,
29 			enum auth_alg_off auth_alg_off)
30 {
31 	int i = 0;
32 
33 	switch (sn_size) {
34 	case 5:
35 		i = PDCP_CPLANE_OFFSET + enc_alg_off +
36 			auth_alg_off + ((dir == 0) ?
37 				UPLINK : DOWNLINK);
38 		break;
39 	case 12:
40 		i = PDCP_CPLANE_LONG_SN_OFFSET + enc_alg_off +
41 			auth_alg_off + ((dir == 0) ?
42 				UPLINK : DOWNLINK);
43 		break;
44 	default:
45 		printf("\nInvalid SN: %u for %s\n", sn_size, __func__);
46 	}
47 
48 	return test_pdcp_proto_cplane_encap(i);
49 }
50 
51 static int
52 cplane_decap(uint32_t sn_size, uint8_t dir,
53 	     enum enc_alg_off enc_alg_off,
54 	     enum auth_alg_off auth_alg_off)
55 {
56 	int i = 0;
57 
58 	switch (sn_size) {
59 	case 5:
60 		i = PDCP_CPLANE_OFFSET + enc_alg_off +
61 			auth_alg_off + ((dir == 0) ?
62 				UPLINK : DOWNLINK);
63 		break;
64 	case 12:
65 		i = PDCP_CPLANE_LONG_SN_OFFSET + enc_alg_off +
66 			auth_alg_off + ((dir == 0) ?
67 				UPLINK : DOWNLINK);
68 		break;
69 	default:
70 		printf("\nInvalid SN: %u for %s\n", sn_size, __func__);
71 	}
72 
73 	return test_pdcp_proto_cplane_decap(i);
74 }
75 
76 static int uplane_encap_no_integrity(uint32_t sn_size, uint8_t dir,
77 		enum enc_alg_off enc_alg_off)
78 {
79 	int i = PDCP_UPLANE_OFFSET + ((dir == 0) ? UPLINK : DOWNLINK) +
80 			enc_alg_off;
81 
82 	switch (sn_size) {
83 	case 7:
84 		i += SHORT_SEQ_NUM_OFFSET;
85 		break;
86 	case 15:
87 		i += FIFTEEN_BIT_SEQ_NUM_OFFSET;
88 		break;
89 	case 12:
90 		i += LONG_SEQ_NUM_OFFSET;
91 		break;
92 	case 18:
93 		i += EIGHTEEN_BIT_SEQ_NUM_OFFSET;
94 		break;
95 	default:
96 		printf("\nInvalid SN: %u\n", sn_size);
97 	}
98 
99 	return test_pdcp_proto_uplane_encap(i);
100 }
101 
102 static int
103 uplane_decap_no_integrity(uint32_t sn_size, uint8_t dir,
104 		enum enc_alg_off enc_alg_off)
105 {
106 	int i = PDCP_UPLANE_OFFSET + ((dir == 0) ? UPLINK : DOWNLINK) +
107 			enc_alg_off;
108 
109 	switch (sn_size) {
110 	case 7:
111 		i += SHORT_SEQ_NUM_OFFSET;
112 		break;
113 	case 15:
114 		i += FIFTEEN_BIT_SEQ_NUM_OFFSET;
115 		break;
116 	case 12:
117 		i += LONG_SEQ_NUM_OFFSET;
118 		break;
119 	case 18:
120 		i += EIGHTEEN_BIT_SEQ_NUM_OFFSET;
121 		break;
122 	default:
123 		printf("\nInvalid SN: %u\n", sn_size);
124 	}
125 
126 	return test_pdcp_proto_uplane_decap(i);
127 }
128 
129 static int
130 uplane_encap_with_integrity(uint32_t sn_size, uint8_t dir,
131 		enum enc_alg_off enc_alg_off,
132 		enum auth_alg_off auth_alg_off)
133 {
134 	int i = 0;
135 
136 	switch (sn_size) {
137 	case 12:
138 		i = PDCP_UPLANE_12BIT_OFFSET + enc_alg_off +
139 			auth_alg_off + ((dir == 0) ?
140 				UPLINK : DOWNLINK);
141 		break;
142 	case 18:
143 		i = PDCP_UPLANE_18BIT_OFFSET + enc_alg_off +
144 			auth_alg_off + ((dir == 0) ?
145 				UPLINK : DOWNLINK);
146 		break;
147 	default:
148 		printf("\nInvalid SN: %u\n", sn_size);
149 	}
150 
151 	return test_pdcp_proto_uplane_encap_with_int(i);
152 }
153 
154 static int
155 uplane_decap_with_integrity(uint32_t sn_size, uint8_t dir,
156 		enum enc_alg_off enc_alg_off,
157 		enum auth_alg_off auth_alg_off)
158 {
159 	int i = 0;
160 
161 	switch (sn_size) {
162 	case 12:
163 		i = PDCP_UPLANE_12BIT_OFFSET + enc_alg_off +
164 			auth_alg_off + ((dir == 0) ?
165 				UPLINK : DOWNLINK);
166 		break;
167 	case 18:
168 		i = PDCP_UPLANE_18BIT_OFFSET + enc_alg_off +
169 			auth_alg_off + ((dir == 0) ?
170 				UPLINK : DOWNLINK);
171 		break;
172 	default:
173 		printf("\nInvalid SN: %u\n", sn_size);
174 	}
175 
176 	return test_pdcp_proto_uplane_decap_with_int(i);
177 }
178 
179 #define TEST_PDCP_COUNT(func) do {			\
180 	if (func == TEST_SUCCESS)  {			\
181 		printf("\t%d)", n++);			\
182 		printf(#func"-PASS\n");			\
183 		i++;					\
184 	} else {					\
185 		printf("\t%d)", n++);			\
186 		printf("+++++ FAILED:" #func"\n");	\
187 	}						\
188 } while (0)
189 
190 int
191 test_PDCP_PROTO_cplane_encap_all(void)
192 {
193 	int i = 0, n = 0;
194 
195 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, NULL_ENC, NULL_AUTH));
196 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, NULL_ENC, NULL_AUTH));
197 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, NULL_ENC, SNOW_AUTH));
198 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, NULL_ENC, SNOW_AUTH));
199 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, NULL_ENC, AES_AUTH));
200 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, NULL_ENC, AES_AUTH));
201 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, NULL_ENC, ZUC_AUTH));
202 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, NULL_ENC, ZUC_AUTH));
203 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, SNOW_ENC, NULL_AUTH));
204 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, SNOW_ENC, NULL_AUTH));
205 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, SNOW_ENC, SNOW_AUTH));
206 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, SNOW_ENC, SNOW_AUTH));
207 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, SNOW_ENC, AES_AUTH));
208 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, SNOW_ENC, AES_AUTH));
209 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, SNOW_ENC, ZUC_AUTH));
210 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, SNOW_ENC, ZUC_AUTH));
211 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, AES_ENC, NULL_AUTH));
212 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, AES_ENC, NULL_AUTH));
213 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, AES_ENC, SNOW_AUTH));
214 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, AES_ENC, SNOW_AUTH));
215 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, AES_ENC, AES_AUTH));
216 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, AES_ENC, AES_AUTH));
217 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, AES_ENC, ZUC_AUTH));
218 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, AES_ENC, ZUC_AUTH));
219 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, ZUC_ENC, NULL_AUTH));
220 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, ZUC_ENC, NULL_AUTH));
221 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, ZUC_ENC, SNOW_AUTH));
222 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, ZUC_ENC, SNOW_AUTH));
223 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, ZUC_ENC, AES_AUTH));
224 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, ZUC_ENC, AES_AUTH));
225 	TEST_PDCP_COUNT(cplane_encap(5, UPLINK, ZUC_ENC, ZUC_AUTH));
226 	TEST_PDCP_COUNT(cplane_encap(5, DOWNLINK, ZUC_ENC, ZUC_AUTH));
227 
228 	/* For 12-bit SN */
229 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, NULL_ENC, NULL_AUTH));
230 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, NULL_ENC, NULL_AUTH));
231 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, NULL_ENC, SNOW_AUTH));
232 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, NULL_ENC, SNOW_AUTH));
233 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, NULL_ENC, AES_AUTH));
234 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, NULL_ENC, AES_AUTH));
235 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, NULL_ENC, ZUC_AUTH));
236 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, NULL_ENC, ZUC_AUTH));
237 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, SNOW_ENC, NULL_AUTH));
238 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, SNOW_ENC, NULL_AUTH));
239 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, SNOW_ENC, SNOW_AUTH));
240 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, SNOW_ENC, SNOW_AUTH));
241 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, SNOW_ENC, AES_AUTH));
242 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, SNOW_ENC, AES_AUTH));
243 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, SNOW_ENC, ZUC_AUTH));
244 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, SNOW_ENC, ZUC_AUTH));
245 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, AES_ENC, NULL_AUTH));
246 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, AES_ENC, NULL_AUTH));
247 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, AES_ENC, SNOW_AUTH));
248 
249 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, AES_ENC, SNOW_AUTH));
250 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, AES_ENC, AES_AUTH));
251 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, AES_ENC, AES_AUTH));
252 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, AES_ENC, ZUC_AUTH));
253 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, AES_ENC, ZUC_AUTH));
254 
255 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, ZUC_ENC, NULL_AUTH));
256 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, ZUC_ENC, NULL_AUTH));
257 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, ZUC_ENC, SNOW_AUTH));
258 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, ZUC_ENC, SNOW_AUTH));
259 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, ZUC_ENC, AES_AUTH));
260 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, ZUC_ENC, AES_AUTH));
261 	TEST_PDCP_COUNT(cplane_encap(12, UPLINK, ZUC_ENC, ZUC_AUTH));
262 	TEST_PDCP_COUNT(cplane_encap(12, DOWNLINK, ZUC_ENC, ZUC_AUTH));
263 
264 	if (n - i)
265 		printf("## %s: %d passed out of %d\n", __func__, i, n);
266 
267 	return n - i;
268 };
269 
270 int
271 test_PDCP_PROTO_cplane_decap_all(void)
272 {
273 	int i = 0, n = 0;
274 
275 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, NULL_ENC, NULL_AUTH));
276 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, NULL_ENC, NULL_AUTH));
277 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, NULL_ENC, SNOW_AUTH));
278 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, NULL_ENC, SNOW_AUTH));
279 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, NULL_ENC, AES_AUTH));
280 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, NULL_ENC, AES_AUTH));
281 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, NULL_ENC, ZUC_AUTH));
282 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, NULL_ENC, ZUC_AUTH));
283 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, SNOW_ENC, NULL_AUTH));
284 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, SNOW_ENC, NULL_AUTH));
285 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, SNOW_ENC, SNOW_AUTH));
286 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, SNOW_ENC, SNOW_AUTH));
287 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, SNOW_ENC, AES_AUTH));
288 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, SNOW_ENC, AES_AUTH));
289 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, SNOW_ENC, ZUC_AUTH));
290 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, SNOW_ENC, ZUC_AUTH));
291 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, AES_ENC, NULL_AUTH));
292 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, AES_ENC, NULL_AUTH));
293 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, AES_ENC, SNOW_AUTH));
294 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, AES_ENC, SNOW_AUTH));
295 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, AES_ENC, AES_AUTH));
296 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, AES_ENC, AES_AUTH));
297 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, AES_ENC, ZUC_AUTH));
298 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, AES_ENC, ZUC_AUTH));
299 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, ZUC_ENC, NULL_AUTH));
300 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, ZUC_ENC, NULL_AUTH));
301 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, ZUC_ENC, SNOW_AUTH));
302 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, ZUC_ENC, SNOW_AUTH));
303 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, ZUC_ENC, AES_AUTH));
304 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, ZUC_ENC, AES_AUTH));
305 	TEST_PDCP_COUNT(cplane_decap(5, UPLINK, ZUC_ENC, ZUC_AUTH));
306 	TEST_PDCP_COUNT(cplane_decap(5, DOWNLINK, ZUC_ENC, ZUC_AUTH));
307 
308 	/* C-plane 12-bit */
309 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, NULL_ENC, NULL_AUTH));
310 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, NULL_ENC, NULL_AUTH));
311 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, NULL_ENC, SNOW_AUTH));
312 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, NULL_ENC, SNOW_AUTH));
313 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, NULL_ENC, AES_AUTH));
314 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, NULL_ENC, AES_AUTH));
315 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, NULL_ENC, ZUC_AUTH));
316 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, NULL_ENC, ZUC_AUTH));
317 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, SNOW_ENC, NULL_AUTH));
318 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, SNOW_ENC, NULL_AUTH));
319 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, SNOW_ENC, SNOW_AUTH));
320 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, SNOW_ENC, SNOW_AUTH));
321 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, SNOW_ENC, AES_AUTH));
322 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, SNOW_ENC, AES_AUTH));
323 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, SNOW_ENC, ZUC_AUTH));
324 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, SNOW_ENC, ZUC_AUTH));
325 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, AES_ENC, NULL_AUTH));
326 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, AES_ENC, NULL_AUTH));
327 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, AES_ENC, SNOW_AUTH));
328 
329 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, AES_ENC, SNOW_AUTH));
330 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, AES_ENC, AES_AUTH));
331 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, AES_ENC, AES_AUTH));
332 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, AES_ENC, ZUC_AUTH));
333 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, AES_ENC, ZUC_AUTH));
334 
335 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, ZUC_ENC, NULL_AUTH));
336 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, ZUC_ENC, NULL_AUTH));
337 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, ZUC_ENC, SNOW_AUTH));
338 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, ZUC_ENC, SNOW_AUTH));
339 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, ZUC_ENC, AES_AUTH));
340 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, ZUC_ENC, AES_AUTH));
341 	TEST_PDCP_COUNT(cplane_decap(12, UPLINK, ZUC_ENC, ZUC_AUTH));
342 	TEST_PDCP_COUNT(cplane_decap(12, DOWNLINK, ZUC_ENC, ZUC_AUTH));
343 
344 	if (n - i)
345 		printf("## %s: %d passed out of %d\n", __func__, i, n);
346 
347 	return n - i;
348 };
349 
350 int
351 test_PDCP_PROTO_uplane_encap_all(void)
352 {
353 	int i = 0, n = 0;
354 
355 	TEST_PDCP_COUNT(uplane_encap_no_integrity(12, UPLINK, NULL_ENC));
356 	TEST_PDCP_COUNT(uplane_encap_no_integrity(12, DOWNLINK, NULL_ENC));
357 	TEST_PDCP_COUNT(uplane_encap_no_integrity(7, UPLINK, NULL_ENC));
358 	TEST_PDCP_COUNT(uplane_encap_no_integrity(7, DOWNLINK, NULL_ENC));
359 	TEST_PDCP_COUNT(uplane_encap_no_integrity(15, UPLINK, NULL_ENC));
360 	TEST_PDCP_COUNT(uplane_encap_no_integrity(15, DOWNLINK, NULL_ENC));
361 	TEST_PDCP_COUNT(uplane_encap_no_integrity(18, UPLINK, NULL_ENC));
362 	TEST_PDCP_COUNT(uplane_encap_no_integrity(18, DOWNLINK, NULL_ENC));
363 
364 	TEST_PDCP_COUNT(uplane_encap_no_integrity(12, UPLINK, SNOW_ENC));
365 	TEST_PDCP_COUNT(uplane_encap_no_integrity(12, DOWNLINK, SNOW_ENC));
366 	TEST_PDCP_COUNT(uplane_encap_no_integrity(7, UPLINK, SNOW_ENC));
367 	TEST_PDCP_COUNT(uplane_encap_no_integrity(7, DOWNLINK, SNOW_ENC));
368 	TEST_PDCP_COUNT(uplane_encap_no_integrity(15, UPLINK, SNOW_ENC));
369 	TEST_PDCP_COUNT(uplane_encap_no_integrity(15, DOWNLINK, SNOW_ENC));
370 	TEST_PDCP_COUNT(uplane_encap_no_integrity(18, UPLINK, SNOW_ENC));
371 	TEST_PDCP_COUNT(uplane_encap_no_integrity(18, DOWNLINK, SNOW_ENC));
372 
373 	TEST_PDCP_COUNT(uplane_encap_no_integrity(12, UPLINK, AES_ENC));
374 	TEST_PDCP_COUNT(uplane_encap_no_integrity(12, DOWNLINK, AES_ENC));
375 	TEST_PDCP_COUNT(uplane_encap_no_integrity(7, UPLINK, AES_ENC));
376 	TEST_PDCP_COUNT(uplane_encap_no_integrity(7, DOWNLINK, AES_ENC));
377 	TEST_PDCP_COUNT(uplane_encap_no_integrity(15, UPLINK, AES_ENC));
378 	TEST_PDCP_COUNT(uplane_encap_no_integrity(15, DOWNLINK, AES_ENC));
379 	TEST_PDCP_COUNT(uplane_encap_no_integrity(18, UPLINK, AES_ENC));
380 	TEST_PDCP_COUNT(uplane_encap_no_integrity(18, DOWNLINK, AES_ENC));
381 
382 	TEST_PDCP_COUNT(uplane_encap_no_integrity(12, UPLINK, ZUC_ENC));
383 	TEST_PDCP_COUNT(uplane_encap_no_integrity(12, DOWNLINK, ZUC_ENC));
384 	TEST_PDCP_COUNT(uplane_encap_no_integrity(7, UPLINK, ZUC_ENC));
385 	TEST_PDCP_COUNT(uplane_encap_no_integrity(7, DOWNLINK, ZUC_ENC));
386 	TEST_PDCP_COUNT(uplane_encap_no_integrity(15, UPLINK, ZUC_ENC));
387 	TEST_PDCP_COUNT(uplane_encap_no_integrity(15, DOWNLINK, ZUC_ENC));
388 	TEST_PDCP_COUNT(uplane_encap_no_integrity(18, UPLINK, ZUC_ENC));
389 	TEST_PDCP_COUNT(uplane_encap_no_integrity(18, DOWNLINK, ZUC_ENC));
390 
391 	/* For 12-bit SN with integrity */
392 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, NULL_ENC, NULL_AUTH));
393 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, NULL_ENC, NULL_AUTH));
394 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, NULL_ENC, SNOW_AUTH));
395 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, NULL_ENC, SNOW_AUTH));
396 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, NULL_ENC, AES_AUTH));
397 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, NULL_ENC, AES_AUTH));
398 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, NULL_ENC, ZUC_AUTH));
399 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, NULL_ENC, ZUC_AUTH));
400 
401 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, SNOW_ENC, NULL_AUTH));
402 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, SNOW_ENC, NULL_AUTH));
403 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, SNOW_ENC, SNOW_AUTH));
404 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, SNOW_ENC, SNOW_AUTH));
405 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, SNOW_ENC, AES_AUTH));
406 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, SNOW_ENC, AES_AUTH));
407 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, SNOW_ENC, ZUC_AUTH));
408 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, SNOW_ENC, ZUC_AUTH));
409 
410 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, AES_ENC, NULL_AUTH));
411 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, AES_ENC, NULL_AUTH));
412 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, AES_ENC, SNOW_AUTH));
413 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, AES_ENC, SNOW_AUTH));
414 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, AES_ENC, AES_AUTH));
415 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, AES_ENC, AES_AUTH));
416 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, AES_ENC, ZUC_AUTH));
417 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, AES_ENC, ZUC_AUTH));
418 
419 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, ZUC_ENC, NULL_AUTH));
420 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, ZUC_ENC, NULL_AUTH));
421 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, ZUC_ENC, SNOW_AUTH));
422 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, ZUC_ENC, SNOW_AUTH));
423 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, ZUC_ENC, AES_AUTH));
424 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, ZUC_ENC, AES_AUTH));
425 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, UPLINK, ZUC_ENC, ZUC_AUTH));
426 	TEST_PDCP_COUNT(uplane_encap_with_integrity(12, DOWNLINK, ZUC_ENC, ZUC_AUTH));
427 
428 	/* For 18-bit SN with integrity */
429 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, NULL_ENC, NULL_AUTH));
430 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, NULL_ENC, NULL_AUTH));
431 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, NULL_ENC, SNOW_AUTH));
432 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, NULL_ENC, SNOW_AUTH));
433 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, NULL_ENC, AES_AUTH));
434 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, NULL_ENC, AES_AUTH));
435 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, NULL_ENC, ZUC_AUTH));
436 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, NULL_ENC, ZUC_AUTH));
437 
438 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, SNOW_ENC, NULL_AUTH));
439 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, SNOW_ENC, NULL_AUTH));
440 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, SNOW_ENC, SNOW_AUTH));
441 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, SNOW_ENC, SNOW_AUTH));
442 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, SNOW_ENC, AES_AUTH));
443 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, SNOW_ENC, AES_AUTH));
444 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, SNOW_ENC, ZUC_AUTH));
445 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, SNOW_ENC, ZUC_AUTH));
446 
447 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, AES_ENC, NULL_AUTH));
448 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, AES_ENC, NULL_AUTH));
449 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, AES_ENC, SNOW_AUTH));
450 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, AES_ENC, SNOW_AUTH));
451 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, AES_ENC, AES_AUTH));
452 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, AES_ENC, AES_AUTH));
453 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, AES_ENC, ZUC_AUTH));
454 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, AES_ENC, ZUC_AUTH));
455 
456 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, ZUC_ENC, NULL_AUTH));
457 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, ZUC_ENC, NULL_AUTH));
458 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, ZUC_ENC, SNOW_AUTH));
459 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, ZUC_ENC, SNOW_AUTH));
460 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, ZUC_ENC, AES_AUTH));
461 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, ZUC_ENC, AES_AUTH));
462 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, UPLINK, ZUC_ENC, ZUC_AUTH));
463 	TEST_PDCP_COUNT(uplane_encap_with_integrity(18, DOWNLINK, ZUC_ENC, ZUC_AUTH));
464 
465 	if (n - i)
466 		printf("## %s: %d passed out of %d\n", __func__, i, n);
467 
468 	return n - i;
469 };
470 
471 int
472 test_PDCP_PROTO_uplane_decap_all(void)
473 {
474 	int i = 0, n = 0;
475 
476 	TEST_PDCP_COUNT(uplane_decap_no_integrity(12, UPLINK, NULL_ENC));
477 	TEST_PDCP_COUNT(uplane_decap_no_integrity(12, DOWNLINK, NULL_ENC));
478 	TEST_PDCP_COUNT(uplane_decap_no_integrity(7, UPLINK, NULL_ENC));
479 	TEST_PDCP_COUNT(uplane_decap_no_integrity(7, DOWNLINK, NULL_ENC));
480 	TEST_PDCP_COUNT(uplane_decap_no_integrity(15, UPLINK, NULL_ENC));
481 	TEST_PDCP_COUNT(uplane_decap_no_integrity(15, DOWNLINK, NULL_ENC));
482 	TEST_PDCP_COUNT(uplane_decap_no_integrity(18, UPLINK, NULL_ENC));
483 	TEST_PDCP_COUNT(uplane_decap_no_integrity(18, DOWNLINK, NULL_ENC));
484 
485 	TEST_PDCP_COUNT(uplane_decap_no_integrity(12, UPLINK, SNOW_ENC));
486 	TEST_PDCP_COUNT(uplane_decap_no_integrity(12, DOWNLINK, SNOW_ENC));
487 	TEST_PDCP_COUNT(uplane_decap_no_integrity(7, UPLINK, SNOW_ENC));
488 	TEST_PDCP_COUNT(uplane_decap_no_integrity(7, DOWNLINK, SNOW_ENC));
489 	TEST_PDCP_COUNT(uplane_decap_no_integrity(15, UPLINK, SNOW_ENC));
490 	TEST_PDCP_COUNT(uplane_decap_no_integrity(15, DOWNLINK, SNOW_ENC));
491 	TEST_PDCP_COUNT(uplane_decap_no_integrity(18, UPLINK, SNOW_ENC));
492 	TEST_PDCP_COUNT(uplane_decap_no_integrity(18, DOWNLINK, SNOW_ENC));
493 
494 	TEST_PDCP_COUNT(uplane_decap_no_integrity(12, UPLINK, AES_ENC));
495 	TEST_PDCP_COUNT(uplane_decap_no_integrity(12, DOWNLINK, AES_ENC));
496 	TEST_PDCP_COUNT(uplane_decap_no_integrity(7, UPLINK, AES_ENC));
497 	TEST_PDCP_COUNT(uplane_decap_no_integrity(7, DOWNLINK, AES_ENC));
498 	TEST_PDCP_COUNT(uplane_decap_no_integrity(15, UPLINK, AES_ENC));
499 	TEST_PDCP_COUNT(uplane_decap_no_integrity(15, DOWNLINK, AES_ENC));
500 	TEST_PDCP_COUNT(uplane_decap_no_integrity(18, UPLINK, AES_ENC));
501 	TEST_PDCP_COUNT(uplane_decap_no_integrity(18, DOWNLINK, AES_ENC));
502 
503 	TEST_PDCP_COUNT(uplane_decap_no_integrity(12, UPLINK, ZUC_ENC));
504 	TEST_PDCP_COUNT(uplane_decap_no_integrity(12, DOWNLINK, ZUC_ENC));
505 	TEST_PDCP_COUNT(uplane_decap_no_integrity(7, UPLINK, ZUC_ENC));
506 	TEST_PDCP_COUNT(uplane_decap_no_integrity(7, DOWNLINK, ZUC_ENC));
507 	TEST_PDCP_COUNT(uplane_decap_no_integrity(15, UPLINK, ZUC_ENC));
508 	TEST_PDCP_COUNT(uplane_decap_no_integrity(15, DOWNLINK, ZUC_ENC));
509 	TEST_PDCP_COUNT(uplane_decap_no_integrity(18, UPLINK, ZUC_ENC));
510 	TEST_PDCP_COUNT(uplane_decap_no_integrity(18, DOWNLINK, ZUC_ENC));
511 
512 	/* u-plane 12-bit with integrity */
513 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, NULL_ENC, NULL_AUTH));
514 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, NULL_ENC, NULL_AUTH));
515 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, NULL_ENC, SNOW_AUTH));
516 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, NULL_ENC, SNOW_AUTH));
517 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, NULL_ENC, AES_AUTH));
518 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, NULL_ENC, AES_AUTH));
519 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, NULL_ENC, ZUC_AUTH));
520 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, NULL_ENC, ZUC_AUTH));
521 
522 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, SNOW_ENC, NULL_AUTH));
523 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, SNOW_ENC, NULL_AUTH));
524 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, SNOW_ENC, SNOW_AUTH));
525 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, SNOW_ENC, SNOW_AUTH));
526 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, SNOW_ENC, AES_AUTH));
527 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, SNOW_ENC, AES_AUTH));
528 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, SNOW_ENC, ZUC_AUTH));
529 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, SNOW_ENC, ZUC_AUTH));
530 
531 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, AES_ENC, NULL_AUTH));
532 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, AES_ENC, NULL_AUTH));
533 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, AES_ENC, SNOW_AUTH));
534 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, AES_ENC, SNOW_AUTH));
535 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, AES_ENC, AES_AUTH));
536 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, AES_ENC, AES_AUTH));
537 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, AES_ENC, ZUC_AUTH));
538 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, AES_ENC, ZUC_AUTH));
539 
540 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, ZUC_ENC, NULL_AUTH));
541 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, ZUC_ENC, NULL_AUTH));
542 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, ZUC_ENC, SNOW_AUTH));
543 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, ZUC_ENC, SNOW_AUTH));
544 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, ZUC_ENC, AES_AUTH));
545 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, ZUC_ENC, AES_AUTH));
546 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, UPLINK, ZUC_ENC, ZUC_AUTH));
547 	TEST_PDCP_COUNT(uplane_decap_with_integrity(12, DOWNLINK, ZUC_ENC, ZUC_AUTH));
548 
549 	/* u-plane 18-bit with integrity */
550 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, NULL_ENC, NULL_AUTH));
551 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, NULL_ENC, NULL_AUTH));
552 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, NULL_ENC, SNOW_AUTH));
553 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, NULL_ENC, SNOW_AUTH));
554 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, NULL_ENC, AES_AUTH));
555 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, NULL_ENC, AES_AUTH));
556 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, NULL_ENC, ZUC_AUTH));
557 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, NULL_ENC, ZUC_AUTH));
558 
559 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, SNOW_ENC, NULL_AUTH));
560 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, SNOW_ENC, NULL_AUTH));
561 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, SNOW_ENC, SNOW_AUTH));
562 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, SNOW_ENC, SNOW_AUTH));
563 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, SNOW_ENC, AES_AUTH));
564 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, SNOW_ENC, AES_AUTH));
565 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, SNOW_ENC, ZUC_AUTH));
566 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, SNOW_ENC, ZUC_AUTH));
567 
568 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, AES_ENC, NULL_AUTH));
569 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, AES_ENC, NULL_AUTH));
570 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, AES_ENC, SNOW_AUTH));
571 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, AES_ENC, SNOW_AUTH));
572 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, AES_ENC, AES_AUTH));
573 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, AES_ENC, AES_AUTH));
574 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, AES_ENC, ZUC_AUTH));
575 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, AES_ENC, ZUC_AUTH));
576 
577 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, ZUC_ENC, NULL_AUTH));
578 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, ZUC_ENC, NULL_AUTH));
579 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, ZUC_ENC, SNOW_AUTH));
580 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, ZUC_ENC, SNOW_AUTH));
581 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, ZUC_ENC, AES_AUTH));
582 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, ZUC_ENC, AES_AUTH));
583 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, UPLINK, ZUC_ENC, ZUC_AUTH));
584 	TEST_PDCP_COUNT(uplane_decap_with_integrity(18, DOWNLINK, ZUC_ENC, ZUC_AUTH));
585 
586 	if (n - i)
587 		printf("## %s: %d passed out of %d\n", __func__, i, n);
588 
589 	return n - i;
590 };
591