drbd: Rename DRBD_ADM_NEED_{CONN -> RESOURCE}
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / drbd_genl.h
CommitLineData
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1/*
2 * General overview:
3 * full generic netlink message:
4 * |nlmsghdr|genlmsghdr|<payload>
5 *
6 * payload:
7 * |optional fixed size family header|<sequence of netlink attributes>
8 *
9 * sequence of netlink attributes:
10 * I chose to have all "top level" attributes NLA_NESTED,
11 * corresponding to some real struct.
12 * So we have a sequence of |tla, len|<nested nla sequence>
13 *
14 * nested nla sequence:
15 * may be empty, or contain a sequence of netlink attributes
16 * representing the struct fields.
17 *
18 * The tag number of any field (regardless of containing struct)
19 * will be available as T_ ## field_name,
20 * so you cannot have the same field name in two differnt structs.
21 *
22 * The tag numbers themselves are per struct, though,
23 * so should always begin at 1 (not 0, that is the special "NLA_UNSPEC" type,
24 * which we won't use here).
25 * The tag numbers are used as index in the respective nla_policy array.
26 *
27 * GENL_struct(tag_name, tag_number, struct name, struct fields) - struct and policy
28 * genl_magic_struct.h
29 * generates the struct declaration,
30 * generates an entry in the tla enum,
31 * genl_magic_func.h
32 * generates an entry in the static tla policy
33 * with .type = NLA_NESTED
34 * generates the static <struct_name>_nl_policy definition,
35 * and static conversion functions
36 *
37 * genl_magic_func.h
38 *
39 * GENL_mc_group(group)
40 * genl_magic_struct.h
41 * does nothing
42 * genl_magic_func.h
43 * defines and registers the mcast group,
44 * and provides a send helper
45 *
46 * GENL_notification(op_name, op_num, mcast_group, tla list)
47 * These are notifications to userspace.
48 *
49 * genl_magic_struct.h
50 * generates an entry in the genl_ops enum,
51 * genl_magic_func.h
52 * does nothing
53 *
54 * mcast group: the name of the mcast group this notification should be
55 * expected on
56 * tla list: the list of expected top level attributes,
57 * for documentation and sanity checking.
58 *
59 * GENL_op(op_name, op_num, flags and handler, tla list) - "genl operations"
60 * These are requests from userspace.
61 *
62 * _op and _notification share the same "number space",
63 * op_nr will be assigned to "genlmsghdr->cmd"
64 *
65 * genl_magic_struct.h
66 * generates an entry in the genl_ops enum,
67 * genl_magic_func.h
68 * generates an entry in the static genl_ops array,
69 * and static register/unregister functions to
70 * genl_register_family_with_ops().
71 *
72 * flags and handler:
73 * GENL_op_init( .doit = x, .dumpit = y, .flags = something)
74 * GENL_doit(x) => .dumpit = NULL, .flags = GENL_ADMIN_PERM
75 * tla list: the list of expected top level attributes,
76 * for documentation and sanity checking.
77 */
78
79/*
80 * STRUCTS
81 */
82
83/* this is sent kernel -> userland on various error conditions, and contains
84 * informational textual info, which is supposedly human readable.
85 * The computer relevant return code is in the drbd_genlmsghdr.
86 */
87GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply,
88 /* "arbitrary" size strings, nla_policy.len = 0 */
5f935920 89 __str_field(1, DRBD_GENLA_F_MANDATORY, info_text, 0)
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90)
91
92/* Configuration requests typically need a context to operate on.
93 * Possible keys are device minor (fits in the drbd_genlmsghdr),
94 * the replication link (aka connection) name,
95 * and/or the replication group (aka resource) name,
96 * and the volume id within the resource. */
97GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context,
5f935920 98 __u32_field(1, DRBD_GENLA_F_MANDATORY, ctx_volume)
7c3063cc 99 __str_field(2, DRBD_GENLA_F_MANDATORY, ctx_resource_name, 128)
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100)
101
102GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf,
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103 __str_field(1, DRBD_F_REQUIRED | DRBD_F_INVARIANT, backing_dev, 128)
104 __str_field(2, DRBD_F_REQUIRED | DRBD_F_INVARIANT, meta_dev, 128)
105 __s32_field(3, DRBD_F_REQUIRED | DRBD_F_INVARIANT, meta_dev_idx)
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106
107 /* use the resize command to try and change the disk_size */
5f935920 108 __u64_field(4, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, disk_size)
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109 /* we could change the max_bio_bvecs,
110 * but it won't propagate through the stack */
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111 __u32_field(5, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, max_bio_bvecs)
112
113 __u32_field_def(6, DRBD_GENLA_F_MANDATORY, on_io_error, DRBD_ON_IO_ERROR_DEF)
114 __u32_field_def(7, DRBD_GENLA_F_MANDATORY, fencing, DRBD_FENCING_DEF)
115
116 __u32_field_def(8, DRBD_GENLA_F_MANDATORY, resync_rate, DRBD_RESYNC_RATE_DEF)
117 __s32_field_def(9, DRBD_GENLA_F_MANDATORY, resync_after, DRBD_MINOR_NUMBER_DEF)
118 __u32_field_def(10, DRBD_GENLA_F_MANDATORY, al_extents, DRBD_AL_EXTENTS_DEF)
119 __u32_field_def(11, DRBD_GENLA_F_MANDATORY, c_plan_ahead, DRBD_C_PLAN_AHEAD_DEF)
120 __u32_field_def(12, DRBD_GENLA_F_MANDATORY, c_delay_target, DRBD_C_DELAY_TARGET_DEF)
121 __u32_field_def(13, DRBD_GENLA_F_MANDATORY, c_fill_target, DRBD_C_FILL_TARGET_DEF)
122 __u32_field_def(14, DRBD_GENLA_F_MANDATORY, c_max_rate, DRBD_C_MAX_RATE_DEF)
123 __u32_field_def(15, DRBD_GENLA_F_MANDATORY, c_min_rate, DRBD_C_MIN_RATE_DEF)
124
125 __flg_field_def(16, DRBD_GENLA_F_MANDATORY, disk_barrier, DRBD_DISK_BARRIER_DEF)
126 __flg_field_def(17, DRBD_GENLA_F_MANDATORY, disk_flushes, DRBD_DISK_FLUSHES_DEF)
127 __flg_field_def(18, DRBD_GENLA_F_MANDATORY, disk_drain, DRBD_DISK_DRAIN_DEF)
128 __flg_field_def(19, DRBD_GENLA_F_MANDATORY, md_flushes, DRBD_MD_FLUSHES_DEF)
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129)
130
f399002e 131GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts,
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132 __str_field_def(1, DRBD_GENLA_F_MANDATORY, cpu_mask, 32)
133 __u32_field_def(2, DRBD_GENLA_F_MANDATORY, on_no_data, DRBD_ON_NO_DATA_DEF)
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134)
135
136GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf,
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137 __bin_field(1, DRBD_F_REQUIRED | DRBD_F_INVARIANT, my_addr, 128)
138 __bin_field(2, DRBD_F_REQUIRED | DRBD_F_INVARIANT, peer_addr, 128)
139 __str_field_def(3, DRBD_GENLA_F_MANDATORY | DRBD_F_SENSITIVE,
ec2c35ac 140 shared_secret, SHARED_SECRET_MAX)
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141 __str_field_def(4, DRBD_GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX)
142 __str_field_def(5, DRBD_GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX)
143 __str_field_def(6, DRBD_GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX)
144 __str_field_def(7, DRBD_GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX)
145 __u32_field_def(8, DRBD_GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF)
146 __u32_field_def(9, DRBD_GENLA_F_MANDATORY, connect_int, DRBD_CONNECT_INT_DEF)
147 __u32_field_def(10, DRBD_GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF)
148 __u32_field_def(11, DRBD_GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF)
149 __u32_field_def(12, DRBD_GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF)
150 __u32_field_def(13, DRBD_GENLA_F_MANDATORY, sndbuf_size, DRBD_SNDBUF_SIZE_DEF)
151 __u32_field_def(14, DRBD_GENLA_F_MANDATORY, rcvbuf_size, DRBD_RCVBUF_SIZE_DEF)
152 __u32_field_def(15, DRBD_GENLA_F_MANDATORY, ko_count, DRBD_KO_COUNT_DEF)
153 __u32_field_def(16, DRBD_GENLA_F_MANDATORY, max_buffers, DRBD_MAX_BUFFERS_DEF)
154 __u32_field_def(17, DRBD_GENLA_F_MANDATORY, max_epoch_size, DRBD_MAX_EPOCH_SIZE_DEF)
155 __u32_field_def(18, DRBD_GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF)
156 __u32_field_def(19, DRBD_GENLA_F_MANDATORY, after_sb_0p, DRBD_AFTER_SB_0P_DEF)
157 __u32_field_def(20, DRBD_GENLA_F_MANDATORY, after_sb_1p, DRBD_AFTER_SB_1P_DEF)
158 __u32_field_def(21, DRBD_GENLA_F_MANDATORY, after_sb_2p, DRBD_AFTER_SB_2P_DEF)
159 __u32_field_def(22, DRBD_GENLA_F_MANDATORY, rr_conflict, DRBD_RR_CONFLICT_DEF)
160 __u32_field_def(23, DRBD_GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF)
161 __u32_field_def(24, DRBD_GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF)
162 __u32_field_def(25, DRBD_GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF)
163 __flg_field_def(26, DRBD_GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF)
164 __flg_field(27, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, discard_my_data)
165 __flg_field_def(28, DRBD_GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF)
166 __flg_field_def(29, DRBD_GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF)
167 __flg_field(30, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, dry_run)
168 __flg_field_def(31, DRBD_GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF)
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169)
170
171GENL_struct(DRBD_NLA_SET_ROLE_PARMS, 6, set_role_parms,
5f935920 172 __flg_field(1, DRBD_GENLA_F_MANDATORY, assume_uptodate)
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173)
174
175GENL_struct(DRBD_NLA_RESIZE_PARMS, 7, resize_parms,
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176 __u64_field(1, DRBD_GENLA_F_MANDATORY, resize_size)
177 __flg_field(2, DRBD_GENLA_F_MANDATORY, resize_force)
178 __flg_field(3, DRBD_GENLA_F_MANDATORY, no_resync)
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179)
180
181GENL_struct(DRBD_NLA_STATE_INFO, 8, state_info,
182 /* the reason of the broadcast,
183 * if this is an event triggered broadcast. */
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184 __u32_field(1, DRBD_GENLA_F_MANDATORY, sib_reason)
185 __u32_field(2, DRBD_F_REQUIRED, current_state)
186 __u64_field(3, DRBD_GENLA_F_MANDATORY, capacity)
187 __u64_field(4, DRBD_GENLA_F_MANDATORY, ed_uuid)
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188
189 /* These are for broadcast from after state change work.
190 * prev_state and new_state are from the moment the state change took
191 * place, new_state is not neccessarily the same as current_state,
192 * there may have been more state changes since. Which will be
193 * broadcasted soon, in their respective after state change work. */
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194 __u32_field(5, DRBD_GENLA_F_MANDATORY, prev_state)
195 __u32_field(6, DRBD_GENLA_F_MANDATORY, new_state)
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196
197 /* if we have a local disk: */
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198 __bin_field(7, DRBD_GENLA_F_MANDATORY, uuids, (UI_SIZE*sizeof(__u64)))
199 __u32_field(8, DRBD_GENLA_F_MANDATORY, disk_flags)
200 __u64_field(9, DRBD_GENLA_F_MANDATORY, bits_total)
201 __u64_field(10, DRBD_GENLA_F_MANDATORY, bits_oos)
ec2c35ac 202 /* and in case resync or online verify is active */
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203 __u64_field(11, DRBD_GENLA_F_MANDATORY, bits_rs_total)
204 __u64_field(12, DRBD_GENLA_F_MANDATORY, bits_rs_failed)
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205
206 /* for pre and post notifications of helper execution */
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207 __str_field(13, DRBD_GENLA_F_MANDATORY, helper, 32)
208 __u32_field(14, DRBD_GENLA_F_MANDATORY, helper_exit_code)
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209)
210
211GENL_struct(DRBD_NLA_START_OV_PARMS, 9, start_ov_parms,
5f935920 212 __u64_field(1, DRBD_GENLA_F_MANDATORY, ov_start_sector)
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213)
214
215GENL_struct(DRBD_NLA_NEW_C_UUID_PARMS, 10, new_c_uuid_parms,
5f935920 216 __flg_field(1, DRBD_GENLA_F_MANDATORY, clear_bm)
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217)
218
219GENL_struct(DRBD_NLA_TIMEOUT_PARMS, 11, timeout_parms,
5f935920 220 __u32_field(1, DRBD_F_REQUIRED, timeout_type)
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221)
222
223GENL_struct(DRBD_NLA_DISCONNECT_PARMS, 12, disconnect_parms,
5f935920 224 __flg_field(1, DRBD_GENLA_F_MANDATORY, force_disconnect)
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225)
226
227/*
228 * Notifications and commands (genlmsghdr->cmd)
229 */
230GENL_mc_group(events)
231
232 /* kernel -> userspace announcement of changes */
233GENL_notification(
234 DRBD_EVENT, 1, events,
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235 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)
236 GENL_tla_expected(DRBD_NLA_STATE_INFO, DRBD_F_REQUIRED)
237 GENL_tla_expected(DRBD_NLA_NET_CONF, DRBD_GENLA_F_MANDATORY)
238 GENL_tla_expected(DRBD_NLA_DISK_CONF, DRBD_GENLA_F_MANDATORY)
239 GENL_tla_expected(DRBD_NLA_SYNCER_CONF, DRBD_GENLA_F_MANDATORY)
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240)
241
242 /* query kernel for specific or all info */
243GENL_op(
244 DRBD_ADM_GET_STATUS, 2,
245 GENL_op_init(
246 .doit = drbd_adm_get_status,
247 .dumpit = drbd_adm_get_status_all,
248 /* anyone may ask for the status,
249 * it is broadcasted anyways */
250 ),
251 /* To select the object .doit.
252 * Or a subset of objects in .dumpit. */
5f935920 253 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_GENLA_F_MANDATORY)
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254)
255
ec2c35ac 256 /* add DRBD minor devices as volumes to resources */
789c1b62 257GENL_op(DRBD_ADM_NEW_MINOR, 5, GENL_doit(drbd_adm_add_minor),
5f935920 258 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 259GENL_op(DRBD_ADM_DEL_MINOR, 6, GENL_doit(drbd_adm_delete_minor),
5f935920 260 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 261
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262 /* add or delete resources */
263GENL_op(DRBD_ADM_NEW_RESOURCE, 7, GENL_doit(drbd_adm_new_resource),
5f935920 264 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
789c1b62 265GENL_op(DRBD_ADM_DEL_RESOURCE, 8, GENL_doit(drbd_adm_del_resource),
5f935920 266 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 267
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268GENL_op(DRBD_ADM_RESOURCE_OPTS, 9,
269 GENL_doit(drbd_adm_resource_opts),
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270 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)
271 GENL_tla_expected(DRBD_NLA_RESOURCE_OPTS, DRBD_GENLA_F_MANDATORY)
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272)
273
274GENL_op(
275 DRBD_ADM_CONNECT, 10,
276 GENL_doit(drbd_adm_connect),
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277 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)
278 GENL_tla_expected(DRBD_NLA_NET_CONF, DRBD_F_REQUIRED)
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279)
280
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281GENL_op(
282 DRBD_ADM_CHG_NET_OPTS, 29,
283 GENL_doit(drbd_adm_net_opts),
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284 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)
285 GENL_tla_expected(DRBD_NLA_NET_CONF, DRBD_F_REQUIRED)
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286)
287
ec2c35ac 288GENL_op(DRBD_ADM_DISCONNECT, 11, GENL_doit(drbd_adm_disconnect),
5f935920 289 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 290
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291GENL_op(DRBD_ADM_ATTACH, 12,
292 GENL_doit(drbd_adm_attach),
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293 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)
294 GENL_tla_expected(DRBD_NLA_DISK_CONF, DRBD_F_REQUIRED)
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295)
296
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297GENL_op(DRBD_ADM_CHG_DISK_OPTS, 28,
298 GENL_doit(drbd_adm_disk_opts),
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299 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)
300 GENL_tla_expected(DRBD_NLA_DISK_OPTS, DRBD_F_REQUIRED)
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301)
302
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303GENL_op(
304 DRBD_ADM_RESIZE, 13,
305 GENL_doit(drbd_adm_resize),
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306 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)
307 GENL_tla_expected(DRBD_NLA_RESIZE_PARMS, DRBD_GENLA_F_MANDATORY)
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308)
309
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310GENL_op(
311 DRBD_ADM_PRIMARY, 14,
312 GENL_doit(drbd_adm_set_role),
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313 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)
314 GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, DRBD_F_REQUIRED)
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315)
316
317GENL_op(
318 DRBD_ADM_SECONDARY, 15,
319 GENL_doit(drbd_adm_set_role),
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AG
320 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)
321 GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, DRBD_F_REQUIRED)
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322)
323
324GENL_op(
325 DRBD_ADM_NEW_C_UUID, 16,
326 GENL_doit(drbd_adm_new_c_uuid),
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AG
327 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)
328 GENL_tla_expected(DRBD_NLA_NEW_C_UUID_PARMS, DRBD_GENLA_F_MANDATORY)
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329)
330
331GENL_op(
332 DRBD_ADM_START_OV, 17,
333 GENL_doit(drbd_adm_start_ov),
5f935920 334 GENL_tla_expected(DRBD_NLA_START_OV_PARMS, DRBD_GENLA_F_MANDATORY)
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335)
336
337GENL_op(DRBD_ADM_DETACH, 18, GENL_doit(drbd_adm_detach),
5f935920 338 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 339GENL_op(DRBD_ADM_INVALIDATE, 19, GENL_doit(drbd_adm_invalidate),
5f935920 340 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 341GENL_op(DRBD_ADM_INVAL_PEER, 20, GENL_doit(drbd_adm_invalidate_peer),
5f935920 342 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 343GENL_op(DRBD_ADM_PAUSE_SYNC, 21, GENL_doit(drbd_adm_pause_sync),
5f935920 344 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 345GENL_op(DRBD_ADM_RESUME_SYNC, 22, GENL_doit(drbd_adm_resume_sync),
5f935920 346 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 347GENL_op(DRBD_ADM_SUSPEND_IO, 23, GENL_doit(drbd_adm_suspend_io),
5f935920 348 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 349GENL_op(DRBD_ADM_RESUME_IO, 24, GENL_doit(drbd_adm_resume_io),
5f935920 350 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 351GENL_op(DRBD_ADM_OUTDATE, 25, GENL_doit(drbd_adm_outdate),
5f935920 352 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
ec2c35ac 353GENL_op(DRBD_ADM_GET_TIMEOUT_TYPE, 26, GENL_doit(drbd_adm_get_timeout_type),
5f935920 354 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))
85f75dd7 355GENL_op(DRBD_ADM_DOWN, 27, GENL_doit(drbd_adm_down),
5f935920 356 GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED))