netlink: fix NETLINK_RECV_NO_ENOBUFS in netlink_set_err()
[linux-2.6.git] / include / linux / dcbnl.h
1 /*
2  * Copyright (c) 2008, Intel Corporation.
3  *
4  * This program is free software; you can redistribute it and/or modify it
5  * under the terms and conditions of the GNU General Public License,
6  * version 2, as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope it will be useful, but WITHOUT
9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
11  * more details.
12  *
13  * You should have received a copy of the GNU General Public License along with
14  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
15  * Place - Suite 330, Boston, MA 02111-1307 USA.
16  *
17  * Author: Lucy Liu <lucy.liu@intel.com>
18  */
19
20 #ifndef __LINUX_DCBNL_H__
21 #define __LINUX_DCBNL_H__
22
23 #include <linux/types.h>
24
25 #define DCB_PROTO_VERSION 1
26
27 struct dcbmsg {
28         __u8               dcb_family;
29         __u8               cmd;
30         __u16              dcb_pad;
31 };
32
33 /**
34  * enum dcbnl_commands - supported DCB commands
35  *
36  * @DCB_CMD_UNDEFINED: unspecified command to catch errors
37  * @DCB_CMD_GSTATE: request the state of DCB in the device
38  * @DCB_CMD_SSTATE: set the state of DCB in the device
39  * @DCB_CMD_PGTX_GCFG: request the priority group configuration for Tx
40  * @DCB_CMD_PGTX_SCFG: set the priority group configuration for Tx
41  * @DCB_CMD_PGRX_GCFG: request the priority group configuration for Rx
42  * @DCB_CMD_PGRX_SCFG: set the priority group configuration for Rx
43  * @DCB_CMD_PFC_GCFG: request the priority flow control configuration
44  * @DCB_CMD_PFC_SCFG: set the priority flow control configuration
45  * @DCB_CMD_SET_ALL: apply all changes to the underlying device
46  * @DCB_CMD_GPERM_HWADDR: get the permanent MAC address of the underlying
47  *                        device.  Only useful when using bonding.
48  * @DCB_CMD_GCAP: request the DCB capabilities of the device
49  * @DCB_CMD_GNUMTCS: get the number of traffic classes currently supported
50  * @DCB_CMD_SNUMTCS: set the number of traffic classes
51  * @DCB_CMD_GBCN: set backward congestion notification configuration
52  * @DCB_CMD_SBCN: get backward congestion notification configration.
53  * @DCB_CMD_GAPP: get application protocol configuration
54  * @DCB_CMD_SAPP: set application protocol configuration
55  */
56 enum dcbnl_commands {
57         DCB_CMD_UNDEFINED,
58
59         DCB_CMD_GSTATE,
60         DCB_CMD_SSTATE,
61
62         DCB_CMD_PGTX_GCFG,
63         DCB_CMD_PGTX_SCFG,
64         DCB_CMD_PGRX_GCFG,
65         DCB_CMD_PGRX_SCFG,
66
67         DCB_CMD_PFC_GCFG,
68         DCB_CMD_PFC_SCFG,
69
70         DCB_CMD_SET_ALL,
71
72         DCB_CMD_GPERM_HWADDR,
73
74         DCB_CMD_GCAP,
75
76         DCB_CMD_GNUMTCS,
77         DCB_CMD_SNUMTCS,
78
79         DCB_CMD_PFC_GSTATE,
80         DCB_CMD_PFC_SSTATE,
81
82         DCB_CMD_BCN_GCFG,
83         DCB_CMD_BCN_SCFG,
84
85         DCB_CMD_GAPP,
86         DCB_CMD_SAPP,
87
88         __DCB_CMD_ENUM_MAX,
89         DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
90 };
91
92 /**
93  * enum dcbnl_attrs - DCB top-level netlink attributes
94  *
95  * @DCB_ATTR_UNDEFINED: unspecified attribute to catch errors
96  * @DCB_ATTR_IFNAME: interface name of the underlying device (NLA_STRING)
97  * @DCB_ATTR_STATE: enable state of DCB in the device (NLA_U8)
98  * @DCB_ATTR_PFC_STATE: enable state of PFC in the device (NLA_U8)
99  * @DCB_ATTR_PFC_CFG: priority flow control configuration (NLA_NESTED)
100  * @DCB_ATTR_NUM_TC: number of traffic classes supported in the device (NLA_U8)
101  * @DCB_ATTR_PG_CFG: priority group configuration (NLA_NESTED)
102  * @DCB_ATTR_SET_ALL: bool to commit changes to hardware or not (NLA_U8)
103  * @DCB_ATTR_PERM_HWADDR: MAC address of the physical device (NLA_NESTED)
104  * @DCB_ATTR_CAP: DCB capabilities of the device (NLA_NESTED)
105  * @DCB_ATTR_NUMTCS: number of traffic classes supported (NLA_NESTED)
106  * @DCB_ATTR_BCN: backward congestion notification configuration (NLA_NESTED)
107  */
108 enum dcbnl_attrs {
109         DCB_ATTR_UNDEFINED,
110
111         DCB_ATTR_IFNAME,
112         DCB_ATTR_STATE,
113         DCB_ATTR_PFC_STATE,
114         DCB_ATTR_PFC_CFG,
115         DCB_ATTR_NUM_TC,
116         DCB_ATTR_PG_CFG,
117         DCB_ATTR_SET_ALL,
118         DCB_ATTR_PERM_HWADDR,
119         DCB_ATTR_CAP,
120         DCB_ATTR_NUMTCS,
121         DCB_ATTR_BCN,
122         DCB_ATTR_APP,
123
124         __DCB_ATTR_ENUM_MAX,
125         DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
126 };
127
128 /**
129  * enum dcbnl_pfc_attrs - DCB Priority Flow Control user priority nested attrs
130  *
131  * @DCB_PFC_UP_ATTR_UNDEFINED: unspecified attribute to catch errors
132  * @DCB_PFC_UP_ATTR_0: Priority Flow Control value for User Priority 0 (NLA_U8)
133  * @DCB_PFC_UP_ATTR_1: Priority Flow Control value for User Priority 1 (NLA_U8)
134  * @DCB_PFC_UP_ATTR_2: Priority Flow Control value for User Priority 2 (NLA_U8)
135  * @DCB_PFC_UP_ATTR_3: Priority Flow Control value for User Priority 3 (NLA_U8)
136  * @DCB_PFC_UP_ATTR_4: Priority Flow Control value for User Priority 4 (NLA_U8)
137  * @DCB_PFC_UP_ATTR_5: Priority Flow Control value for User Priority 5 (NLA_U8)
138  * @DCB_PFC_UP_ATTR_6: Priority Flow Control value for User Priority 6 (NLA_U8)
139  * @DCB_PFC_UP_ATTR_7: Priority Flow Control value for User Priority 7 (NLA_U8)
140  * @DCB_PFC_UP_ATTR_MAX: highest attribute number currently defined
141  * @DCB_PFC_UP_ATTR_ALL: apply to all priority flow control attrs (NLA_FLAG)
142  *
143  */
144 enum dcbnl_pfc_up_attrs {
145         DCB_PFC_UP_ATTR_UNDEFINED,
146
147         DCB_PFC_UP_ATTR_0,
148         DCB_PFC_UP_ATTR_1,
149         DCB_PFC_UP_ATTR_2,
150         DCB_PFC_UP_ATTR_3,
151         DCB_PFC_UP_ATTR_4,
152         DCB_PFC_UP_ATTR_5,
153         DCB_PFC_UP_ATTR_6,
154         DCB_PFC_UP_ATTR_7,
155         DCB_PFC_UP_ATTR_ALL,
156
157         __DCB_PFC_UP_ATTR_ENUM_MAX,
158         DCB_PFC_UP_ATTR_MAX = __DCB_PFC_UP_ATTR_ENUM_MAX - 1,
159 };
160
161 /**
162  * enum dcbnl_pg_attrs - DCB Priority Group attributes
163  *
164  * @DCB_PG_ATTR_UNDEFINED: unspecified attribute to catch errors
165  * @DCB_PG_ATTR_TC_0: Priority Group Traffic Class 0 configuration (NLA_NESTED)
166  * @DCB_PG_ATTR_TC_1: Priority Group Traffic Class 1 configuration (NLA_NESTED)
167  * @DCB_PG_ATTR_TC_2: Priority Group Traffic Class 2 configuration (NLA_NESTED)
168  * @DCB_PG_ATTR_TC_3: Priority Group Traffic Class 3 configuration (NLA_NESTED)
169  * @DCB_PG_ATTR_TC_4: Priority Group Traffic Class 4 configuration (NLA_NESTED)
170  * @DCB_PG_ATTR_TC_5: Priority Group Traffic Class 5 configuration (NLA_NESTED)
171  * @DCB_PG_ATTR_TC_6: Priority Group Traffic Class 6 configuration (NLA_NESTED)
172  * @DCB_PG_ATTR_TC_7: Priority Group Traffic Class 7 configuration (NLA_NESTED)
173  * @DCB_PG_ATTR_TC_MAX: highest attribute number currently defined
174  * @DCB_PG_ATTR_TC_ALL: apply to all traffic classes (NLA_NESTED)
175  * @DCB_PG_ATTR_BW_ID_0: Percent of link bandwidth for Priority Group 0 (NLA_U8)
176  * @DCB_PG_ATTR_BW_ID_1: Percent of link bandwidth for Priority Group 1 (NLA_U8)
177  * @DCB_PG_ATTR_BW_ID_2: Percent of link bandwidth for Priority Group 2 (NLA_U8)
178  * @DCB_PG_ATTR_BW_ID_3: Percent of link bandwidth for Priority Group 3 (NLA_U8)
179  * @DCB_PG_ATTR_BW_ID_4: Percent of link bandwidth for Priority Group 4 (NLA_U8)
180  * @DCB_PG_ATTR_BW_ID_5: Percent of link bandwidth for Priority Group 5 (NLA_U8)
181  * @DCB_PG_ATTR_BW_ID_6: Percent of link bandwidth for Priority Group 6 (NLA_U8)
182  * @DCB_PG_ATTR_BW_ID_7: Percent of link bandwidth for Priority Group 7 (NLA_U8)
183  * @DCB_PG_ATTR_BW_ID_MAX: highest attribute number currently defined
184  * @DCB_PG_ATTR_BW_ID_ALL: apply to all priority groups (NLA_FLAG)
185  *
186  */
187 enum dcbnl_pg_attrs {
188         DCB_PG_ATTR_UNDEFINED,
189
190         DCB_PG_ATTR_TC_0,
191         DCB_PG_ATTR_TC_1,
192         DCB_PG_ATTR_TC_2,
193         DCB_PG_ATTR_TC_3,
194         DCB_PG_ATTR_TC_4,
195         DCB_PG_ATTR_TC_5,
196         DCB_PG_ATTR_TC_6,
197         DCB_PG_ATTR_TC_7,
198         DCB_PG_ATTR_TC_MAX,
199         DCB_PG_ATTR_TC_ALL,
200
201         DCB_PG_ATTR_BW_ID_0,
202         DCB_PG_ATTR_BW_ID_1,
203         DCB_PG_ATTR_BW_ID_2,
204         DCB_PG_ATTR_BW_ID_3,
205         DCB_PG_ATTR_BW_ID_4,
206         DCB_PG_ATTR_BW_ID_5,
207         DCB_PG_ATTR_BW_ID_6,
208         DCB_PG_ATTR_BW_ID_7,
209         DCB_PG_ATTR_BW_ID_MAX,
210         DCB_PG_ATTR_BW_ID_ALL,
211
212         __DCB_PG_ATTR_ENUM_MAX,
213         DCB_PG_ATTR_MAX = __DCB_PG_ATTR_ENUM_MAX - 1,
214 };
215
216 /**
217  * enum dcbnl_tc_attrs - DCB Traffic Class attributes
218  *
219  * @DCB_TC_ATTR_PARAM_UNDEFINED: unspecified attribute to catch errors
220  * @DCB_TC_ATTR_PARAM_PGID: (NLA_U8) Priority group the traffic class belongs to
221  *                          Valid values are:  0-7
222  * @DCB_TC_ATTR_PARAM_UP_MAPPING: (NLA_U8) Traffic class to user priority map
223  *                                Some devices may not support changing the
224  *                                user priority map of a TC.
225  * @DCB_TC_ATTR_PARAM_STRICT_PRIO: (NLA_U8) Strict priority setting
226  *                                 0 - none
227  *                                 1 - group strict
228  *                                 2 - link strict
229  * @DCB_TC_ATTR_PARAM_BW_PCT: optional - (NLA_U8) If supported by the device and
230  *                            not configured to use link strict priority,
231  *                            this is the percentage of bandwidth of the
232  *                            priority group this traffic class belongs to
233  * @DCB_TC_ATTR_PARAM_ALL: (NLA_FLAG) all traffic class parameters
234  *
235  */
236 enum dcbnl_tc_attrs {
237         DCB_TC_ATTR_PARAM_UNDEFINED,
238
239         DCB_TC_ATTR_PARAM_PGID,
240         DCB_TC_ATTR_PARAM_UP_MAPPING,
241         DCB_TC_ATTR_PARAM_STRICT_PRIO,
242         DCB_TC_ATTR_PARAM_BW_PCT,
243         DCB_TC_ATTR_PARAM_ALL,
244
245         __DCB_TC_ATTR_PARAM_ENUM_MAX,
246         DCB_TC_ATTR_PARAM_MAX = __DCB_TC_ATTR_PARAM_ENUM_MAX - 1,
247 };
248
249 /**
250  * enum dcbnl_cap_attrs - DCB Capability attributes
251  *
252  * @DCB_CAP_ATTR_UNDEFINED: unspecified attribute to catch errors
253  * @DCB_CAP_ATTR_ALL: (NLA_FLAG) all capability parameters
254  * @DCB_CAP_ATTR_PG: (NLA_U8) device supports Priority Groups
255  * @DCB_CAP_ATTR_PFC: (NLA_U8) device supports Priority Flow Control
256  * @DCB_CAP_ATTR_UP2TC: (NLA_U8) device supports user priority to
257  *                               traffic class mapping
258  * @DCB_CAP_ATTR_PG_TCS: (NLA_U8) bitmap where each bit represents a
259  *                                number of traffic classes the device
260  *                                can be configured to use for Priority Groups
261  * @DCB_CAP_ATTR_PFC_TCS: (NLA_U8) bitmap where each bit represents a
262  *                                 number of traffic classes the device can be
263  *                                 configured to use for Priority Flow Control
264  * @DCB_CAP_ATTR_GSP: (NLA_U8) device supports group strict priority
265  * @DCB_CAP_ATTR_BCN: (NLA_U8) device supports Backwards Congestion
266  *                             Notification
267  */
268 enum dcbnl_cap_attrs {
269         DCB_CAP_ATTR_UNDEFINED,
270         DCB_CAP_ATTR_ALL,
271         DCB_CAP_ATTR_PG,
272         DCB_CAP_ATTR_PFC,
273         DCB_CAP_ATTR_UP2TC,
274         DCB_CAP_ATTR_PG_TCS,
275         DCB_CAP_ATTR_PFC_TCS,
276         DCB_CAP_ATTR_GSP,
277         DCB_CAP_ATTR_BCN,
278
279         __DCB_CAP_ATTR_ENUM_MAX,
280         DCB_CAP_ATTR_MAX = __DCB_CAP_ATTR_ENUM_MAX - 1,
281 };
282
283 /**
284  * enum dcbnl_numtcs_attrs - number of traffic classes
285  *
286  * @DCB_NUMTCS_ATTR_UNDEFINED: unspecified attribute to catch errors
287  * @DCB_NUMTCS_ATTR_ALL: (NLA_FLAG) all traffic class attributes
288  * @DCB_NUMTCS_ATTR_PG: (NLA_U8) number of traffic classes used for
289  *                               priority groups
290  * @DCB_NUMTCS_ATTR_PFC: (NLA_U8) number of traffic classes which can
291  *                                support priority flow control
292  */
293 enum dcbnl_numtcs_attrs {
294         DCB_NUMTCS_ATTR_UNDEFINED,
295         DCB_NUMTCS_ATTR_ALL,
296         DCB_NUMTCS_ATTR_PG,
297         DCB_NUMTCS_ATTR_PFC,
298
299         __DCB_NUMTCS_ATTR_ENUM_MAX,
300         DCB_NUMTCS_ATTR_MAX = __DCB_NUMTCS_ATTR_ENUM_MAX - 1,
301 };
302
303 enum dcbnl_bcn_attrs{
304         DCB_BCN_ATTR_UNDEFINED = 0,
305
306         DCB_BCN_ATTR_RP_0,
307         DCB_BCN_ATTR_RP_1,
308         DCB_BCN_ATTR_RP_2,
309         DCB_BCN_ATTR_RP_3,
310         DCB_BCN_ATTR_RP_4,
311         DCB_BCN_ATTR_RP_5,
312         DCB_BCN_ATTR_RP_6,
313         DCB_BCN_ATTR_RP_7,
314         DCB_BCN_ATTR_RP_ALL,
315
316         DCB_BCN_ATTR_BCNA_0,
317         DCB_BCN_ATTR_BCNA_1,
318         DCB_BCN_ATTR_ALPHA,
319         DCB_BCN_ATTR_BETA,
320         DCB_BCN_ATTR_GD,
321         DCB_BCN_ATTR_GI,
322         DCB_BCN_ATTR_TMAX,
323         DCB_BCN_ATTR_TD,
324         DCB_BCN_ATTR_RMIN,
325         DCB_BCN_ATTR_W,
326         DCB_BCN_ATTR_RD,
327         DCB_BCN_ATTR_RU,
328         DCB_BCN_ATTR_WRTT,
329         DCB_BCN_ATTR_RI,
330         DCB_BCN_ATTR_C,
331         DCB_BCN_ATTR_ALL,
332
333         __DCB_BCN_ATTR_ENUM_MAX,
334         DCB_BCN_ATTR_MAX = __DCB_BCN_ATTR_ENUM_MAX - 1,
335 };
336
337 /**
338  * enum dcb_general_attr_values - general DCB attribute values
339  *
340  * @DCB_ATTR_UNDEFINED: value used to indicate an attribute is not supported
341  *
342  */
343 enum dcb_general_attr_values {
344         DCB_ATTR_VALUE_UNDEFINED = 0xff
345 };
346
347 #define DCB_APP_IDTYPE_ETHTYPE  0x00
348 #define DCB_APP_IDTYPE_PORTNUM  0x01
349 enum dcbnl_app_attrs {
350         DCB_APP_ATTR_UNDEFINED,
351
352         DCB_APP_ATTR_IDTYPE,
353         DCB_APP_ATTR_ID,
354         DCB_APP_ATTR_PRIORITY,
355
356         __DCB_APP_ATTR_ENUM_MAX,
357         DCB_APP_ATTR_MAX = __DCB_APP_ATTR_ENUM_MAX - 1,
358 };
359
360 #endif /* __LINUX_DCBNL_H__ */