xref: /openbmc/u-boot/test/dm/eth.c (revision 8993056f)
1 /*
2  * Copyright (c) 2015 National Instruments
3  *
4  * (C) Copyright 2015
5  * Joe Hershberger <joe.hershberger@ni.com>
6  *
7  * SPDX-License-Identifier:	GPL-2.0
8  */
9 
10 #include <common.h>
11 #include <dm.h>
12 #include <fdtdec.h>
13 #include <malloc.h>
14 #include <net.h>
15 #include <dm/test.h>
16 #include <dm/device-internal.h>
17 #include <dm/uclass-internal.h>
18 #include <asm/eth.h>
19 #include <test/ut.h>
20 
21 DECLARE_GLOBAL_DATA_PTR;
22 
23 #define DM_TEST_ETH_NUM		4
24 
25 static int dm_test_eth(struct unit_test_state *uts)
26 {
27 	net_ping_ip = string_to_ip("1.1.2.2");
28 
29 	env_set("ethact", "eth@10002000");
30 	ut_assertok(net_loop(PING));
31 	ut_asserteq_str("eth@10002000", env_get("ethact"));
32 
33 	env_set("ethact", "eth@10003000");
34 	ut_assertok(net_loop(PING));
35 	ut_asserteq_str("eth@10003000", env_get("ethact"));
36 
37 	env_set("ethact", "eth@10004000");
38 	ut_assertok(net_loop(PING));
39 	ut_asserteq_str("eth@10004000", env_get("ethact"));
40 
41 	return 0;
42 }
43 DM_TEST(dm_test_eth, DM_TESTF_SCAN_FDT);
44 
45 static int dm_test_eth_alias(struct unit_test_state *uts)
46 {
47 	net_ping_ip = string_to_ip("1.1.2.2");
48 	env_set("ethact", "eth0");
49 	ut_assertok(net_loop(PING));
50 	ut_asserteq_str("eth@10002000", env_get("ethact"));
51 
52 	env_set("ethact", "eth1");
53 	ut_assertok(net_loop(PING));
54 	ut_asserteq_str("eth@10004000", env_get("ethact"));
55 
56 	/* Expected to fail since eth2 is not defined in the device tree */
57 	env_set("ethact", "eth2");
58 	ut_assertok(net_loop(PING));
59 	ut_asserteq_str("eth@10002000", env_get("ethact"));
60 
61 	env_set("ethact", "eth5");
62 	ut_assertok(net_loop(PING));
63 	ut_asserteq_str("eth@10003000", env_get("ethact"));
64 
65 	return 0;
66 }
67 DM_TEST(dm_test_eth_alias, DM_TESTF_SCAN_FDT);
68 
69 static int dm_test_eth_prime(struct unit_test_state *uts)
70 {
71 	net_ping_ip = string_to_ip("1.1.2.2");
72 
73 	/* Expected to be "eth@10003000" because of ethprime variable */
74 	env_set("ethact", NULL);
75 	env_set("ethprime", "eth5");
76 	ut_assertok(net_loop(PING));
77 	ut_asserteq_str("eth@10003000", env_get("ethact"));
78 
79 	/* Expected to be "eth@10002000" because it is first */
80 	env_set("ethact", NULL);
81 	env_set("ethprime", NULL);
82 	ut_assertok(net_loop(PING));
83 	ut_asserteq_str("eth@10002000", env_get("ethact"));
84 
85 	return 0;
86 }
87 DM_TEST(dm_test_eth_prime, DM_TESTF_SCAN_FDT);
88 
89 /**
90  * This test case is trying to test the following scenario:
91  *	- All ethernet devices are not probed
92  *	- "ethaddr" for all ethernet devices are not set
93  *	- "ethact" is set to a valid ethernet device name
94  *
95  * With Sandbox default test configuration, all ethernet devices are
96  * probed after power-up, so we have to manually create such scenario:
97  *	- Remove all ethernet devices
98  *	- Remove all "ethaddr" environment variables
99  *	- Set "ethact" to the first ethernet device
100  *
101  * Do a ping test to see if anything goes wrong.
102  */
103 static int dm_test_eth_act(struct unit_test_state *uts)
104 {
105 	struct udevice *dev[DM_TEST_ETH_NUM];
106 	const char *ethname[DM_TEST_ETH_NUM] = {"eth@10002000", "eth@10003000",
107 						"sbe5", "eth@10004000"};
108 	const char *addrname[DM_TEST_ETH_NUM] = {"ethaddr", "eth5addr",
109 						 "eth3addr", "eth1addr"};
110 	char ethaddr[DM_TEST_ETH_NUM][18];
111 	int i;
112 
113 	memset(ethaddr, '\0', sizeof(ethaddr));
114 	net_ping_ip = string_to_ip("1.1.2.2");
115 
116 	/* Prepare the test scenario */
117 	for (i = 0; i < DM_TEST_ETH_NUM; i++) {
118 		ut_assertok(uclass_find_device_by_name(UCLASS_ETH,
119 						       ethname[i], &dev[i]));
120 		ut_assertok(device_remove(dev[i], DM_REMOVE_NORMAL));
121 
122 		/* Invalidate MAC address */
123 		strncpy(ethaddr[i], env_get(addrname[i]), 17);
124 		/* Must disable access protection for ethaddr before clearing */
125 		env_set(".flags", addrname[i]);
126 		env_set(addrname[i], NULL);
127 	}
128 
129 	/* Set ethact to "eth@10002000" */
130 	env_set("ethact", ethname[0]);
131 
132 	/* Segment fault might happen if something is wrong */
133 	ut_asserteq(-ENODEV, net_loop(PING));
134 
135 	for (i = 0; i < DM_TEST_ETH_NUM; i++) {
136 		/* Restore the env */
137 		env_set(".flags", addrname[i]);
138 		env_set(addrname[i], ethaddr[i]);
139 
140 		/* Probe the device again */
141 		ut_assertok(device_probe(dev[i]));
142 	}
143 	env_set(".flags", NULL);
144 	env_set("ethact", NULL);
145 
146 	return 0;
147 }
148 DM_TEST(dm_test_eth_act, DM_TESTF_SCAN_FDT);
149 
150 /* The asserts include a return on fail; cleanup in the caller */
151 static int _dm_test_eth_rotate1(struct unit_test_state *uts)
152 {
153 	/* Make sure that the default is to rotate to the next interface */
154 	env_set("ethact", "eth@10004000");
155 	ut_assertok(net_loop(PING));
156 	ut_asserteq_str("eth@10002000", env_get("ethact"));
157 
158 	/* If ethrotate is no, then we should fail on a bad MAC */
159 	env_set("ethact", "eth@10004000");
160 	env_set("ethrotate", "no");
161 	ut_asserteq(-EINVAL, net_loop(PING));
162 	ut_asserteq_str("eth@10004000", env_get("ethact"));
163 
164 	return 0;
165 }
166 
167 static int _dm_test_eth_rotate2(struct unit_test_state *uts)
168 {
169 	/* Make sure we can skip invalid devices */
170 	env_set("ethact", "eth@10004000");
171 	ut_assertok(net_loop(PING));
172 	ut_asserteq_str("eth@10004000", env_get("ethact"));
173 
174 	/* Make sure we can handle device name which is not eth# */
175 	env_set("ethact", "sbe5");
176 	ut_assertok(net_loop(PING));
177 	ut_asserteq_str("sbe5", env_get("ethact"));
178 
179 	return 0;
180 }
181 
182 static int dm_test_eth_rotate(struct unit_test_state *uts)
183 {
184 	char ethaddr[18];
185 	int retval;
186 
187 	/* Set target IP to mock ping */
188 	net_ping_ip = string_to_ip("1.1.2.2");
189 
190 	/* Invalidate eth1's MAC address */
191 	memset(ethaddr, '\0', sizeof(ethaddr));
192 	strncpy(ethaddr, env_get("eth1addr"), 17);
193 	/* Must disable access protection for eth1addr before clearing */
194 	env_set(".flags", "eth1addr");
195 	env_set("eth1addr", NULL);
196 
197 	retval = _dm_test_eth_rotate1(uts);
198 
199 	/* Restore the env */
200 	env_set("eth1addr", ethaddr);
201 	env_set("ethrotate", NULL);
202 
203 	if (!retval) {
204 		/* Invalidate eth0's MAC address */
205 		strncpy(ethaddr, env_get("ethaddr"), 17);
206 		/* Must disable access protection for ethaddr before clearing */
207 		env_set(".flags", "ethaddr");
208 		env_set("ethaddr", NULL);
209 
210 		retval = _dm_test_eth_rotate2(uts);
211 
212 		/* Restore the env */
213 		env_set("ethaddr", ethaddr);
214 	}
215 	/* Restore the env */
216 	env_set(".flags", NULL);
217 
218 	return retval;
219 }
220 DM_TEST(dm_test_eth_rotate, DM_TESTF_SCAN_FDT);
221 
222 /* The asserts include a return on fail; cleanup in the caller */
223 static int _dm_test_net_retry(struct unit_test_state *uts)
224 {
225 	/*
226 	 * eth1 is disabled and netretry is yes, so the ping should succeed and
227 	 * the active device should be eth0
228 	 */
229 	sandbox_eth_disable_response(1, true);
230 	env_set("ethact", "eth@10004000");
231 	env_set("netretry", "yes");
232 	sandbox_eth_skip_timeout();
233 	ut_assertok(net_loop(PING));
234 	ut_asserteq_str("eth@10002000", env_get("ethact"));
235 
236 	/*
237 	 * eth1 is disabled and netretry is no, so the ping should fail and the
238 	 * active device should be eth1
239 	 */
240 	env_set("ethact", "eth@10004000");
241 	env_set("netretry", "no");
242 	sandbox_eth_skip_timeout();
243 	ut_asserteq(-ETIMEDOUT, net_loop(PING));
244 	ut_asserteq_str("eth@10004000", env_get("ethact"));
245 
246 	return 0;
247 }
248 
249 static int dm_test_net_retry(struct unit_test_state *uts)
250 {
251 	int retval;
252 
253 	net_ping_ip = string_to_ip("1.1.2.2");
254 
255 	retval = _dm_test_net_retry(uts);
256 
257 	/* Restore the env */
258 	env_set("netretry", NULL);
259 	sandbox_eth_disable_response(1, false);
260 
261 	return retval;
262 }
263 DM_TEST(dm_test_net_retry, DM_TESTF_SCAN_FDT);
264