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b4d72c08 EC |
1 | /* |
2 | * Copyright IBM Corp. 2013 | |
3 | * Author(s): Eugene Crosser <eugene.crosser@ru.ibm.com> | |
4 | */ | |
5 | ||
6 | #include <linux/slab.h> | |
7 | #include <asm/ebcdic.h> | |
511c2445 | 8 | #include "qeth_core.h" |
b4d72c08 EC |
9 | #include "qeth_l2.h" |
10 | ||
11 | #define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \ | |
12 | struct device_attribute dev_attr_##_id = __ATTR(_name, _mode, _show, _store) | |
13 | ||
b4d72c08 EC |
14 | static ssize_t qeth_bridge_port_role_state_show(struct device *dev, |
15 | struct device_attribute *attr, char *buf, | |
16 | int show_state) | |
17 | { | |
18 | struct qeth_card *card = dev_get_drvdata(dev); | |
19 | enum qeth_sbp_states state = QETH_SBP_STATE_INACTIVE; | |
20 | int rc = 0; | |
21 | char *word; | |
22 | ||
23 | if (!card) | |
24 | return -EINVAL; | |
25 | ||
b4d72c08 EC |
26 | if (qeth_card_hw_is_reachable(card) && |
27 | card->options.sbp.supported_funcs) | |
28 | rc = qeth_bridgeport_query_ports(card, | |
29 | &card->options.sbp.role, &state); | |
30 | if (!rc) { | |
31 | if (show_state) | |
32 | switch (state) { | |
33 | case QETH_SBP_STATE_INACTIVE: | |
34 | word = "inactive"; break; | |
35 | case QETH_SBP_STATE_STANDBY: | |
36 | word = "standby"; break; | |
37 | case QETH_SBP_STATE_ACTIVE: | |
38 | word = "active"; break; | |
39 | default: | |
40 | rc = -EIO; | |
41 | } | |
42 | else | |
43 | switch (card->options.sbp.role) { | |
44 | case QETH_SBP_ROLE_NONE: | |
45 | word = "none"; break; | |
46 | case QETH_SBP_ROLE_PRIMARY: | |
47 | word = "primary"; break; | |
48 | case QETH_SBP_ROLE_SECONDARY: | |
49 | word = "secondary"; break; | |
50 | default: | |
51 | rc = -EIO; | |
52 | } | |
53 | if (rc) | |
54 | QETH_CARD_TEXT_(card, 2, "SBP%02x:%02x", | |
55 | card->options.sbp.role, state); | |
56 | else | |
57 | rc = sprintf(buf, "%s\n", word); | |
58 | } | |
59 | ||
b4d72c08 EC |
60 | return rc; |
61 | } | |
62 | ||
63 | static ssize_t qeth_bridge_port_role_show(struct device *dev, | |
64 | struct device_attribute *attr, char *buf) | |
65 | { | |
66 | return qeth_bridge_port_role_state_show(dev, attr, buf, 0); | |
67 | } | |
68 | ||
69 | static ssize_t qeth_bridge_port_role_store(struct device *dev, | |
70 | struct device_attribute *attr, const char *buf, size_t count) | |
71 | { | |
72 | struct qeth_card *card = dev_get_drvdata(dev); | |
73 | int rc = 0; | |
74 | enum qeth_sbp_roles role; | |
75 | ||
76 | if (!card) | |
77 | return -EINVAL; | |
78 | if (sysfs_streq(buf, "primary")) | |
79 | role = QETH_SBP_ROLE_PRIMARY; | |
80 | else if (sysfs_streq(buf, "secondary")) | |
81 | role = QETH_SBP_ROLE_SECONDARY; | |
82 | else if (sysfs_streq(buf, "none")) | |
83 | role = QETH_SBP_ROLE_NONE; | |
84 | else | |
85 | return -EINVAL; | |
86 | ||
87 | mutex_lock(&card->conf_mutex); | |
88 | ||
ff1d9291 EC |
89 | if (card->options.sbp.reflect_promisc) /* Forbid direct manipulation */ |
90 | rc = -EPERM; | |
91 | else if (qeth_card_hw_is_reachable(card)) { | |
b4d72c08 EC |
92 | rc = qeth_bridgeport_setrole(card, role); |
93 | if (!rc) | |
94 | card->options.sbp.role = role; | |
95 | } else | |
96 | card->options.sbp.role = role; | |
97 | ||
98 | mutex_unlock(&card->conf_mutex); | |
99 | ||
100 | return rc ? rc : count; | |
101 | } | |
102 | ||
103 | static DEVICE_ATTR(bridge_role, 0644, qeth_bridge_port_role_show, | |
104 | qeth_bridge_port_role_store); | |
105 | ||
106 | static ssize_t qeth_bridge_port_state_show(struct device *dev, | |
107 | struct device_attribute *attr, char *buf) | |
108 | { | |
109 | return qeth_bridge_port_role_state_show(dev, attr, buf, 1); | |
110 | } | |
111 | ||
248046ba | 112 | static DEVICE_ATTR(bridge_state, 0444, qeth_bridge_port_state_show, |
b4d72c08 EC |
113 | NULL); |
114 | ||
9f48b9db EC |
115 | static ssize_t qeth_bridgeport_hostnotification_show(struct device *dev, |
116 | struct device_attribute *attr, char *buf) | |
117 | { | |
118 | struct qeth_card *card = dev_get_drvdata(dev); | |
119 | int enabled; | |
120 | ||
121 | if (!card) | |
122 | return -EINVAL; | |
123 | ||
9f48b9db EC |
124 | enabled = card->options.sbp.hostnotification; |
125 | ||
9f48b9db EC |
126 | return sprintf(buf, "%d\n", enabled); |
127 | } | |
128 | ||
129 | static ssize_t qeth_bridgeport_hostnotification_store(struct device *dev, | |
130 | struct device_attribute *attr, const char *buf, size_t count) | |
131 | { | |
132 | struct qeth_card *card = dev_get_drvdata(dev); | |
133 | int rc = 0; | |
134 | int enable; | |
135 | ||
136 | if (!card) | |
137 | return -EINVAL; | |
138 | ||
139 | if (sysfs_streq(buf, "0")) | |
140 | enable = 0; | |
141 | else if (sysfs_streq(buf, "1")) | |
142 | enable = 1; | |
143 | else | |
144 | return -EINVAL; | |
145 | ||
146 | mutex_lock(&card->conf_mutex); | |
147 | ||
148 | if (qeth_card_hw_is_reachable(card)) { | |
149 | rc = qeth_bridgeport_an_set(card, enable); | |
150 | if (!rc) | |
151 | card->options.sbp.hostnotification = enable; | |
152 | } else | |
153 | card->options.sbp.hostnotification = enable; | |
154 | ||
155 | mutex_unlock(&card->conf_mutex); | |
156 | ||
157 | return rc ? rc : count; | |
158 | } | |
159 | ||
160 | static DEVICE_ATTR(bridge_hostnotify, 0644, | |
161 | qeth_bridgeport_hostnotification_show, | |
162 | qeth_bridgeport_hostnotification_store); | |
163 | ||
0db587b0 EC |
164 | static ssize_t qeth_bridgeport_reflect_show(struct device *dev, |
165 | struct device_attribute *attr, char *buf) | |
166 | { | |
167 | struct qeth_card *card = dev_get_drvdata(dev); | |
168 | char *state; | |
169 | ||
170 | if (!card) | |
171 | return -EINVAL; | |
172 | ||
173 | if (card->options.sbp.reflect_promisc) { | |
174 | if (card->options.sbp.reflect_promisc_primary) | |
175 | state = "primary"; | |
176 | else | |
177 | state = "secondary"; | |
178 | } else | |
179 | state = "none"; | |
180 | ||
181 | return sprintf(buf, "%s\n", state); | |
182 | } | |
183 | ||
184 | static ssize_t qeth_bridgeport_reflect_store(struct device *dev, | |
185 | struct device_attribute *attr, const char *buf, size_t count) | |
186 | { | |
187 | struct qeth_card *card = dev_get_drvdata(dev); | |
188 | int enable, primary; | |
ff1d9291 | 189 | int rc = 0; |
0db587b0 EC |
190 | |
191 | if (!card) | |
192 | return -EINVAL; | |
193 | ||
194 | if (sysfs_streq(buf, "none")) { | |
195 | enable = 0; | |
196 | primary = 0; | |
197 | } else if (sysfs_streq(buf, "primary")) { | |
198 | enable = 1; | |
199 | primary = 1; | |
200 | } else if (sysfs_streq(buf, "secondary")) { | |
201 | enable = 1; | |
202 | primary = 0; | |
203 | } else | |
204 | return -EINVAL; | |
205 | ||
206 | mutex_lock(&card->conf_mutex); | |
207 | ||
ff1d9291 EC |
208 | if (card->options.sbp.role != QETH_SBP_ROLE_NONE) |
209 | rc = -EPERM; | |
210 | else { | |
211 | card->options.sbp.reflect_promisc = enable; | |
212 | card->options.sbp.reflect_promisc_primary = primary; | |
213 | rc = 0; | |
214 | } | |
0db587b0 EC |
215 | |
216 | mutex_unlock(&card->conf_mutex); | |
217 | ||
ff1d9291 | 218 | return rc ? rc : count; |
0db587b0 EC |
219 | } |
220 | ||
221 | static DEVICE_ATTR(bridge_reflect_promisc, 0644, | |
222 | qeth_bridgeport_reflect_show, | |
223 | qeth_bridgeport_reflect_store); | |
224 | ||
b4d72c08 EC |
225 | static struct attribute *qeth_l2_bridgeport_attrs[] = { |
226 | &dev_attr_bridge_role.attr, | |
227 | &dev_attr_bridge_state.attr, | |
9f48b9db | 228 | &dev_attr_bridge_hostnotify.attr, |
0db587b0 | 229 | &dev_attr_bridge_reflect_promisc.attr, |
b4d72c08 EC |
230 | NULL, |
231 | }; | |
232 | ||
233 | static struct attribute_group qeth_l2_bridgeport_attr_group = { | |
234 | .attrs = qeth_l2_bridgeport_attrs, | |
235 | }; | |
236 | ||
237 | int qeth_l2_create_device_attributes(struct device *dev) | |
238 | { | |
239 | return sysfs_create_group(&dev->kobj, &qeth_l2_bridgeport_attr_group); | |
240 | } | |
241 | ||
242 | void qeth_l2_remove_device_attributes(struct device *dev) | |
243 | { | |
244 | sysfs_remove_group(&dev->kobj, &qeth_l2_bridgeport_attr_group); | |
245 | } | |
246 | ||
247 | /** | |
248 | * qeth_l2_setup_bridgeport_attrs() - set/restore attrs when turning online. | |
249 | * @card: qeth_card structure pointer | |
250 | * | |
251 | * Note: this function is called with conf_mutex held by the caller | |
252 | */ | |
253 | void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card) | |
254 | { | |
9f48b9db EC |
255 | int rc; |
256 | ||
b4d72c08 EC |
257 | if (!card) |
258 | return; | |
259 | if (!card->options.sbp.supported_funcs) | |
260 | return; | |
261 | if (card->options.sbp.role != QETH_SBP_ROLE_NONE) { | |
262 | /* Conditional to avoid spurious error messages */ | |
263 | qeth_bridgeport_setrole(card, card->options.sbp.role); | |
264 | /* Let the callback function refresh the stored role value. */ | |
265 | qeth_bridgeport_query_ports(card, | |
266 | &card->options.sbp.role, NULL); | |
267 | } | |
9f48b9db EC |
268 | if (card->options.sbp.hostnotification) { |
269 | rc = qeth_bridgeport_an_set(card, 1); | |
270 | if (rc) | |
271 | card->options.sbp.hostnotification = 0; | |
272 | } else | |
273 | qeth_bridgeport_an_set(card, 0); | |
b4d72c08 | 274 | } |