1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright IBM Corp. 2007
4 * Author(s): Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9#include <linux/module.h>
10#include <asm/cio.h>
11#include "qeth_core_mpc.h"
12
13const unsigned char IDX_ACTIVATE_READ[] = {
14 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
15 0x19, 0x01, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00,
16 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc1,
17 0xd3, 0xd3, 0xd6, 0xd3, 0xc5, 0x40, 0x00, 0x00,
18 0x00, 0x00
19};
20
21const unsigned char IDX_ACTIVATE_WRITE[] = {
22 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
23 0x15, 0x01, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00,
24 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc1,
25 0xd3, 0xd3, 0xd6, 0xd3, 0xc5, 0x40, 0x00, 0x00,
26 0x00, 0x00
27};
28
29const unsigned char CM_ENABLE[] = {
30 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
31 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x63,
32 0x10, 0x00, 0x00, 0x01,
33 0x00, 0x00, 0x00, 0x00,
34 0x81, 0x7e, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
35 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x23,
36 0x00, 0x00, 0x23, 0x05, 0x00, 0x00, 0x00, 0x00,
37 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
38 0x01, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, 0x40,
39 0x00, 0x0c, 0x41, 0x02, 0x00, 0x17, 0x00, 0x00,
40 0x00, 0x00, 0x00, 0x00,
41 0x00, 0x0b, 0x04, 0x01,
42 0x7e, 0x04, 0x05, 0x00, 0x01, 0x01, 0x0f,
43 0x00,
44 0x0c, 0x04, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff,
45 0xff, 0xff, 0xff
46};
47
48const unsigned char CM_SETUP[] = {
49 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
50 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x64,
51 0x10, 0x00, 0x00, 0x01,
52 0x00, 0x00, 0x00, 0x00,
53 0x81, 0x7e, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
54 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x24,
55 0x00, 0x00, 0x24, 0x05, 0x00, 0x00, 0x00, 0x00,
56 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
57 0x01, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00, 0x40,
58 0x00, 0x0c, 0x41, 0x04, 0x00, 0x18, 0x00, 0x00,
59 0x00, 0x00, 0x00, 0x00,
60 0x00, 0x09, 0x04, 0x04,
61 0x05, 0x00, 0x01, 0x01, 0x11,
62 0x00, 0x09, 0x04,
63 0x05, 0x05, 0x00, 0x00, 0x00, 0x00,
64 0x00, 0x06,
65 0x04, 0x06, 0xc8, 0x00
66};
67
68const unsigned char ULP_ENABLE[] = {
69 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
70 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x6b,
71 0x10, 0x00, 0x00, 0x01,
72 0x00, 0x00, 0x00, 0x00,
73 0x41, 0x7e, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
74 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x2b,
75 0x00, 0x00, 0x2b, 0x05, 0x20, 0x01, 0x00, 0x00,
76 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
77 0x01, 0x00, 0x00, 0x2b, 0x00, 0x00, 0x00, 0x40,
78 0x00, 0x0c, 0x41, 0x02, 0x00, 0x1f, 0x00, 0x00,
79 0x00, 0x00, 0x00, 0x00,
80 0x00, 0x0b, 0x04, 0x01,
81 0x03, 0x04, 0x05, 0x00, 0x01, 0x01, 0x12,
82 0x00,
83 0x14, 0x04, 0x0a, 0x00, 0x20, 0x00, 0x00, 0xff,
84 0xff, 0x00, 0x08, 0xc8, 0xe8, 0xc4, 0xf1, 0xc7,
85 0xf1, 0x00, 0x00
86};
87
88const unsigned char ULP_SETUP[] = {
89 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
90 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x6c,
91 0x10, 0x00, 0x00, 0x01,
92 0x00, 0x00, 0x00, 0x00,
93 0x41, 0x7e, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02,
94 0x00, 0x00, 0x00, 0x01, 0x00, 0x24, 0x00, 0x2c,
95 0x00, 0x00, 0x2c, 0x05, 0x20, 0x01, 0x00, 0x00,
96 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
97 0x01, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00, 0x40,
98 0x00, 0x0c, 0x41, 0x04, 0x00, 0x20, 0x00, 0x00,
99 0x00, 0x00, 0x00, 0x00,
100 0x00, 0x09, 0x04, 0x04,
101 0x05, 0x00, 0x01, 0x01, 0x14,
102 0x00, 0x09, 0x04,
103 0x05, 0x05, 0x30, 0x01, 0x00, 0x00,
104 0x00, 0x06,
105 0x04, 0x06, 0x40, 0x00,
106 0x00, 0x08, 0x04, 0x0b,
107 0x00, 0x00, 0x00, 0x00
108};
109
110const unsigned char DM_ACT[] = {
111 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05,
112 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x55,
113 0x10, 0x00, 0x00, 0x01,
114 0x00, 0x00, 0x00, 0x00,
115 0x41, 0x7e, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03,
116 0x00, 0x00, 0x00, 0x02, 0x00, 0x24, 0x00, 0x15,
117 0x00, 0x00, 0x2c, 0x05, 0x20, 0x01, 0x00, 0x00,
118 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
119 0x01, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00, 0x40,
120 0x00, 0x0c, 0x43, 0x60, 0x00, 0x09, 0x00, 0x00,
121 0x00, 0x00, 0x00, 0x00,
122 0x00, 0x09, 0x04, 0x04,
123 0x05, 0x40, 0x01, 0x01, 0x00
124};
125
126const unsigned char IPA_PDU_HEADER[] = {
127 0x00, 0xe0, 0x00, 0x00, 0x77, 0x77, 0x77, 0x77,
128 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00,
129 0x10, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
130 0xc1, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
131 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00,
132 0x00, 0x00, 0x00, 0x05, 0x77, 0x77, 0x77, 0x77,
133 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
134 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40,
135};
136
137struct ipa_rc_msg {
138 enum qeth_ipa_return_codes rc;
139 const char *msg;
140};
141
142static const struct ipa_rc_msg qeth_ipa_rc_def_msg[] = {
143 {IPA_RC_SUCCESS, "success"},
144 {IPA_RC_NOTSUPP, "Command not supported"},
145 {IPA_RC_UNSUPPORTED_COMMAND, "Command not supported"},
146 {IPA_RC_DUP_IPV6_REMOTE, "ipv6 address already registered remote"},
147 {IPA_RC_DUP_IPV6_HOME, "ipv6 address already registered"},
148 {IPA_RC_UNREGISTERED_ADDR, "Address not registered"},
149 {IPA_RC_ID_NOT_FOUND, "Identifier not found"},
150 {IPA_RC_LAN_FRAME_MISMATCH, "LAN and frame mismatch"},
151 {IPA_RC_L2_UNSUPPORTED_CMD, "Unsupported layer 2 command"},
152 {IPA_RC_L2_ADDR_TABLE_FULL, "Layer2 address table full"},
153 {IPA_RC_L2_MAC_NOT_AUTH_BY_ADP, "L2 mac not authorized by adapter"},
154 {IPA_RC_DATA_MISMATCH, "Data field mismatch (v4/v6 mixed)"},
155 {IPA_RC_INVALID_MTU_SIZE, "Invalid MTU size"},
156 {IPA_RC_INVALID_LANTYPE, "Invalid LAN type"},
157 {IPA_RC_INVALID_LANNUM, "Invalid LAN num"},
158 {IPA_RC_LAN_PORT_STATE_ERROR, "LAN port state error"},
159 {IPA_RC_SETIP_NO_STARTLAN, "Setip no startlan received"},
160 {IPA_RC_SETIP_ALREADY_RECEIVED, "Setip already received"},
161 {IPA_RC_SETIP_INVALID_VERSION, "SETIP invalid IP version"},
162 {IPA_RC_UNSUPPORTED_SUBCMD, "Unsupported assist subcommand"},
163 {IPA_RC_ARP_ASSIST_NO_ENABLE, "Only partial success, no enable"},
164 {IPA_RC_INVALID_IP_VERSION2, "Invalid IP version"},
165 /* default for qeth_get_ipa_msg(): */
166 {IPA_RC_FFFF, "Unknown Error"}
167};
168
169static const struct ipa_rc_msg qeth_ipa_rc_adp_parms_msg[] = {
170 {IPA_RC_IP_TABLE_FULL, "Add Addr IP Table Full - ipv6"}
171};
172
173static const struct ipa_rc_msg qeth_ipa_rc_diag_ass_msg[] = {
174 {IPA_RC_INVALID_FORMAT, "invalid format or length"}
175};
176
177static const struct ipa_rc_msg qeth_ipa_rc_addr_msg[] = {
178 {IPA_RC_UNKNOWN_ERROR, "IPA command failed - reason unknown"},
179 {IPA_RC_NO_ID_AVAILABLE, "No identifiers available"},
180 {IPA_RC_INVALID_IP_VERSION, "IP version incorrect"}
181};
182
183static const struct ipa_rc_msg qeth_ipa_rc_vnicc_msg[] = {
184 {IPA_RC_VNICC_OOSEQ, "Command issued out of sequence"},
185 {IPA_RC_VNICC_VNICBP, "VNIC is BridgePort"}
186};
187
188static const struct ipa_rc_msg qeth_ipa_rc_sbp_iqd_msg[] = {
189 {IPA_RC_SBP_IQD_NOT_CONFIGURED, "Not configured for bridgeport"},
190 {IPA_RC_SBP_IQD_OS_MISMATCH, "OS mismatch"},
191 {IPA_RC_SBP_IQD_ANO_DEV_PRIMARY, "Primary bridgeport exists already"},
192 {IPA_RC_SBP_IQD_CURRENT_SECOND, "Bridgeport is currently secondary"},
193 {IPA_RC_SBP_IQD_LIMIT_SECOND, "Limit of secondary bridgeports reached"},
194 {IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN, "Not authorized by zManager"},
195 {IPA_RC_SBP_IQD_CURRENT_PRIMARY, "Bridgeport is currently primary"},
196 {IPA_RC_SBP_IQD_NO_QDIO_QUEUES, "QDIO queues not established"}
197};
198
199static const struct ipa_rc_msg qeth_ipa_rc_sbp_osa_msg[] = {
200 {IPA_RC_SBP_OSA_NOT_CONFIGURED, "Not configured for bridgeport"},
201 {IPA_RC_SBP_OSA_OS_MISMATCH, "OS mismatch"},
202 {IPA_RC_SBP_OSA_ANO_DEV_PRIMARY, "Primary bridgeport exists already"},
203 {IPA_RC_SBP_OSA_CURRENT_SECOND, "Bridgeport is currently secondary"},
204 {IPA_RC_SBP_OSA_LIMIT_SECOND, "Limit of secondary bridgeports reached"},
205 {IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN, "Not authorized by zManager"},
206 {IPA_RC_SBP_OSA_CURRENT_PRIMARY, "Bridgeport is currently primary"},
207 {IPA_RC_SBP_OSA_NO_QDIO_QUEUES, "QDIO queues not established"}
208};
209
210static const struct ipa_rc_msg qeth_ipa_rc_mac_msg[] = {
211 {IPA_RC_L2_DUP_MAC, "Duplicate MAC address"},
212 {IPA_RC_L2_DUP_LAYER3_MAC, "Duplicate with layer 3 MAC"},
213 {IPA_RC_L2_GMAC_NOT_FOUND, "GMAC not found"},
214 {IPA_RC_L2_MAC_NOT_AUTH_BY_HYP, "L2 mac not authorized by hypervisor"},
215 {IPA_RC_L2_MAC_NOT_FOUND, "L2 mac address not found"}
216};
217
218static const struct ipa_rc_msg qeth_ipa_rc_ip_msg[] = {
219 {IPA_RC_DUPLICATE_IP_ADDRESS, "Address already registered"},
220 {IPA_RC_IP_ADDR_TABLE_FULL, "IP address table full"},
221 {IPA_RC_IP_ADDR_ALREADY_USED, "IP address already in use on LAN"},
222 {IPA_RC_MC_ADDR_NOT_FOUND, "Multicast address not found"}
223};
224
225static const struct ipa_rc_msg qeth_ipa_rc_lan_msg[] = {
226 {IPA_RC_LAN_OFFLINE, "STRTLAN_LAN_DISABLED - LAN offline"},
227 {IPA_RC_VEPA_TO_VEB_TRANSITION, "Adj. switch disabled port mode RR"},
228};
229
230static const struct ipa_rc_msg qeth_ipa_rc_vlan_msg[] = {
231 {IPA_RC_L2_INVALID_VLAN_ID, "L2 invalid vlan id"},
232 {IPA_RC_L2_DUP_VLAN_ID, "L2 duplicate vlan id"},
233 {IPA_RC_L2_VLAN_ID_NOT_FOUND, "L2 vlan id not found"}
234};
235
236static const struct ipa_rc_msg qeth_ipa_rc_rtg_msg[] = {
237 {IPA_RC_PRIMARY_ALREADY_DEFINED, "Primary already defined"},
238 {IPA_RC_SECOND_ALREADY_DEFINED, "Secondary already defined"},
239 {IPA_RC_INVALID_SETRTG_INDICATOR, "Invalid SETRTG indicator"},
240 {IPA_RC_MC_ADDR_ALREADY_DEFINED, "Multicast address already defined"}
241};
242
243struct ipa_cmd_rc_map {
244 enum qeth_ipa_cmds cmd;
245 const struct ipa_rc_msg *msg_arr;
246 const size_t arr_len;
247};
248
249static const struct ipa_cmd_rc_map qeth_ipa_cmd_rc_map[] = {
250 {
251 .cmd = IPA_CMD_SETADAPTERPARMS,
252 .msg_arr = qeth_ipa_rc_adp_parms_msg,
253 .arr_len = ARRAY_SIZE(qeth_ipa_rc_adp_parms_msg)
254 },
255 {
256 .cmd = IPA_CMD_SET_DIAG_ASS,
257 .msg_arr = qeth_ipa_rc_diag_ass_msg,
258 .arr_len = ARRAY_SIZE(qeth_ipa_rc_diag_ass_msg)
259 },
260 {
261 .cmd = IPA_CMD_CREATE_ADDR,
262 .msg_arr = qeth_ipa_rc_addr_msg,
263 .arr_len = ARRAY_SIZE(qeth_ipa_rc_addr_msg)
264 },
265 {
266 .cmd = IPA_CMD_DESTROY_ADDR,
267 .msg_arr = qeth_ipa_rc_addr_msg,
268 .arr_len = ARRAY_SIZE(qeth_ipa_rc_addr_msg)
269 },
270 {
271 .cmd = IPA_CMD_VNICC,
272 .msg_arr = qeth_ipa_rc_vnicc_msg,
273 .arr_len = ARRAY_SIZE(qeth_ipa_rc_vnicc_msg)
274 },
275 {
276 .cmd = IPA_CMD_SETBRIDGEPORT_IQD,
277 .msg_arr = qeth_ipa_rc_sbp_iqd_msg,
278 .arr_len = ARRAY_SIZE(qeth_ipa_rc_sbp_iqd_msg)
279 },
280 {
281 .cmd = IPA_CMD_SETBRIDGEPORT_OSA,
282 .msg_arr = qeth_ipa_rc_sbp_osa_msg,
283 .arr_len = ARRAY_SIZE(qeth_ipa_rc_sbp_osa_msg)
284 },
285 {
286 .cmd = IPA_CMD_SETVMAC,
287 .msg_arr = qeth_ipa_rc_mac_msg,
288 .arr_len = ARRAY_SIZE(qeth_ipa_rc_mac_msg)
289 },
290 {
291 .cmd = IPA_CMD_DELVMAC,
292 .msg_arr = qeth_ipa_rc_mac_msg,
293 .arr_len = ARRAY_SIZE(qeth_ipa_rc_mac_msg)
294 },
295 {
296 .cmd = IPA_CMD_SETGMAC,
297 .msg_arr = qeth_ipa_rc_mac_msg,
298 .arr_len = ARRAY_SIZE(qeth_ipa_rc_mac_msg)
299 },
300 {
301 .cmd = IPA_CMD_DELGMAC,
302 .msg_arr = qeth_ipa_rc_mac_msg,
303 .arr_len = ARRAY_SIZE(qeth_ipa_rc_mac_msg)
304 },
305 {
306 .cmd = IPA_CMD_SETIP,
307 .msg_arr = qeth_ipa_rc_ip_msg,
308 .arr_len = ARRAY_SIZE(qeth_ipa_rc_ip_msg)
309 },
310 {
311 .cmd = IPA_CMD_SETIPM,
312 .msg_arr = qeth_ipa_rc_ip_msg,
313 .arr_len = ARRAY_SIZE(qeth_ipa_rc_ip_msg)
314 },
315 {
316 .cmd = IPA_CMD_DELIPM,
317 .msg_arr = qeth_ipa_rc_ip_msg,
318 .arr_len = ARRAY_SIZE(qeth_ipa_rc_ip_msg)
319 },
320 {
321 .cmd = IPA_CMD_STARTLAN,
322 .msg_arr = qeth_ipa_rc_lan_msg,
323 .arr_len = ARRAY_SIZE(qeth_ipa_rc_lan_msg)
324 },
325 {
326 .cmd = IPA_CMD_STOPLAN,
327 .msg_arr = qeth_ipa_rc_lan_msg,
328 .arr_len = ARRAY_SIZE(qeth_ipa_rc_lan_msg)
329 },
330 {
331 .cmd = IPA_CMD_SETVLAN,
332 .msg_arr = qeth_ipa_rc_vlan_msg,
333 .arr_len = ARRAY_SIZE(qeth_ipa_rc_vlan_msg)
334 },
335 {
336 .cmd = IPA_CMD_DELVLAN,
337 .msg_arr = qeth_ipa_rc_vlan_msg,
338 .arr_len = ARRAY_SIZE(qeth_ipa_rc_vlan_msg)
339 },
340 {
341 .cmd = IPA_CMD_SETRTG,
342 .msg_arr = qeth_ipa_rc_rtg_msg,
343 .arr_len = ARRAY_SIZE(qeth_ipa_rc_rtg_msg)
344 }
345};
346
347const char *qeth_get_ipa_msg(enum qeth_ipa_cmds cmd,
348 enum qeth_ipa_return_codes rc)
349{
350 int x;
351 const struct ipa_rc_msg *msg_arr = NULL;
352 size_t arr_len = 0;
353
354 for (x = 0; x < ARRAY_SIZE(qeth_ipa_cmd_rc_map); x++) {
355 if (qeth_ipa_cmd_rc_map[x].cmd == cmd) {
356 msg_arr = qeth_ipa_cmd_rc_map[x].msg_arr;
357 arr_len = qeth_ipa_cmd_rc_map[x].arr_len;
358 break;
359 }
360 }
361
362 for (x = 0; x < arr_len; x++) {
363 if (msg_arr[x].rc == rc)
364 return msg_arr[x].msg;
365 }
366
367 for (x = 0; x < ARRAY_SIZE(qeth_ipa_rc_def_msg) - 1; x++) {
368 if (qeth_ipa_rc_def_msg[x].rc == rc)
369 return qeth_ipa_rc_def_msg[x].msg;
370 }
371 return qeth_ipa_rc_def_msg[x].msg;
372}
373
374struct ipa_cmd_names {
375 enum qeth_ipa_cmds cmd;
376 const char *name;
377};
378
379static const struct ipa_cmd_names qeth_ipa_cmd_names[] = {
380 {IPA_CMD_STARTLAN, "startlan"},
381 {IPA_CMD_STOPLAN, "stoplan"},
382 {IPA_CMD_SETVMAC, "setvmac"},
383 {IPA_CMD_DELVMAC, "delvmac"},
384 {IPA_CMD_SETGMAC, "setgmac"},
385 {IPA_CMD_DELGMAC, "delgmac"},
386 {IPA_CMD_SETVLAN, "setvlan"},
387 {IPA_CMD_DELVLAN, "delvlan"},
388 {IPA_CMD_VNICC, "vnic_characteristics"},
389 {IPA_CMD_SETBRIDGEPORT_OSA, "set_bridge_port(osa)"},
390 {IPA_CMD_SETIP, "setip"},
391 {IPA_CMD_QIPASSIST, "qipassist"},
392 {IPA_CMD_SETASSPARMS, "setassparms"},
393 {IPA_CMD_SETIPM, "setipm"},
394 {IPA_CMD_DELIPM, "delipm"},
395 {IPA_CMD_SETRTG, "setrtg"},
396 {IPA_CMD_DELIP, "delip"},
397 {IPA_CMD_SETADAPTERPARMS, "setadapterparms"},
398 {IPA_CMD_SET_DIAG_ASS, "set_diag_ass"},
399 {IPA_CMD_SETBRIDGEPORT_IQD, "set_bridge_port(hs)"},
400 {IPA_CMD_CREATE_ADDR, "create_addr"},
401 {IPA_CMD_DESTROY_ADDR, "destroy_addr"},
402 {IPA_CMD_REGISTER_LOCAL_ADDR, "register_local_addr"},
403 {IPA_CMD_UNREGISTER_LOCAL_ADDR, "unregister_local_addr"},
404 {IPA_CMD_ADDRESS_CHANGE_NOTIF, "address_change_notification"},
405 {IPA_CMD_UNKNOWN, "unknown"},
406};
407
408const char *qeth_get_ipa_cmd_name(enum qeth_ipa_cmds cmd)
409{
410 int x;
411
412 for (x = 0; x < ARRAY_SIZE(qeth_ipa_cmd_names) - 1; x++)
413 if (qeth_ipa_cmd_names[x].cmd == cmd)
414 return qeth_ipa_cmd_names[x].name;
415 return qeth_ipa_cmd_names[x].name;
416}
417

source code of linux/drivers/s390/net/qeth_core_mpc.c