1 | #ifndef LLC_PDU_H |
2 | #define LLC_PDU_H |
3 | /* |
4 | * Copyright (c) 1997 by Procom Technology,Inc. |
5 | * 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
6 | * |
7 | * This program can be redistributed or modified under the terms of the |
8 | * GNU General Public License as published by the Free Software Foundation. |
9 | * This program is distributed without any warranty or implied warranty |
10 | * of merchantability or fitness for a particular purpose. |
11 | * |
12 | * See the GNU General Public License for more details. |
13 | */ |
14 | |
15 | #include <linux/if_ether.h> |
16 | |
17 | /* Lengths of frame formats */ |
18 | #define LLC_PDU_LEN_I 4 /* header and 2 control bytes */ |
19 | #define LLC_PDU_LEN_S 4 |
20 | #define LLC_PDU_LEN_U 3 /* header and 1 control byte */ |
21 | /* header and 1 control byte and XID info */ |
22 | #define LLC_PDU_LEN_U_XID (LLC_PDU_LEN_U + sizeof(struct llc_xid_info)) |
23 | /* Known SAP addresses */ |
24 | #define LLC_GLOBAL_SAP 0xFF |
25 | #define LLC_NULL_SAP 0x00 /* not network-layer visible */ |
26 | #define LLC_MGMT_INDIV 0x02 /* station LLC mgmt indiv addr */ |
27 | #define LLC_MGMT_GRP 0x03 /* station LLC mgmt group addr */ |
28 | #define LLC_RDE_SAP 0xA6 /* route ... */ |
29 | |
30 | /* SAP field bit masks */ |
31 | #define LLC_ISO_RESERVED_SAP 0x02 |
32 | #define LLC_SAP_GROUP_DSAP 0x01 |
33 | #define LLC_SAP_RESP_SSAP 0x01 |
34 | |
35 | /* Group/individual DSAP indicator is DSAP field */ |
36 | #define LLC_PDU_GROUP_DSAP_MASK 0x01 |
37 | #define LLC_PDU_IS_GROUP_DSAP(pdu) \ |
38 | ((pdu->dsap & LLC_PDU_GROUP_DSAP_MASK) ? 0 : 1) |
39 | #define LLC_PDU_IS_INDIV_DSAP(pdu) \ |
40 | (!(pdu->dsap & LLC_PDU_GROUP_DSAP_MASK) ? 0 : 1) |
41 | |
42 | /* Command/response PDU indicator in SSAP field */ |
43 | #define LLC_PDU_CMD_RSP_MASK 0x01 |
44 | #define LLC_PDU_CMD 0 |
45 | #define LLC_PDU_RSP 1 |
46 | #define LLC_PDU_IS_CMD(pdu) ((pdu->ssap & LLC_PDU_RSP) ? 0 : 1) |
47 | #define LLC_PDU_IS_RSP(pdu) ((pdu->ssap & LLC_PDU_RSP) ? 1 : 0) |
48 | |
49 | /* Get PDU type from 2 lowest-order bits of control field first byte */ |
50 | #define LLC_PDU_TYPE_I_MASK 0x01 /* 16-bit control field */ |
51 | #define LLC_PDU_TYPE_S_MASK 0x03 |
52 | #define LLC_PDU_TYPE_U_MASK 0x03 /* 8-bit control field */ |
53 | #define LLC_PDU_TYPE_MASK 0x03 |
54 | |
55 | #define LLC_PDU_TYPE_I 0 /* first bit */ |
56 | #define LLC_PDU_TYPE_S 1 /* first two bits */ |
57 | #define LLC_PDU_TYPE_U 3 /* first two bits */ |
58 | #define LLC_PDU_TYPE_U_XID 4 /* private type for detecting XID commands */ |
59 | |
60 | #define LLC_PDU_TYPE_IS_I(pdu) \ |
61 | ((!(pdu->ctrl_1 & LLC_PDU_TYPE_I_MASK)) ? 1 : 0) |
62 | |
63 | #define LLC_PDU_TYPE_IS_U(pdu) \ |
64 | (((pdu->ctrl_1 & LLC_PDU_TYPE_U_MASK) == LLC_PDU_TYPE_U) ? 1 : 0) |
65 | |
66 | #define LLC_PDU_TYPE_IS_S(pdu) \ |
67 | (((pdu->ctrl_1 & LLC_PDU_TYPE_S_MASK) == LLC_PDU_TYPE_S) ? 1 : 0) |
68 | |
69 | /* U-format PDU control field masks */ |
70 | #define LLC_U_PF_BIT_MASK 0x10 /* P/F bit mask */ |
71 | #define LLC_U_PF_IS_1(pdu) ((pdu->ctrl_1 & LLC_U_PF_BIT_MASK) ? 1 : 0) |
72 | #define LLC_U_PF_IS_0(pdu) ((!(pdu->ctrl_1 & LLC_U_PF_BIT_MASK)) ? 1 : 0) |
73 | |
74 | #define LLC_U_PDU_CMD_MASK 0xEC /* cmd/rsp mask */ |
75 | #define LLC_U_PDU_CMD(pdu) (pdu->ctrl_1 & LLC_U_PDU_CMD_MASK) |
76 | #define LLC_U_PDU_RSP(pdu) (pdu->ctrl_1 & LLC_U_PDU_CMD_MASK) |
77 | |
78 | #define LLC_1_PDU_CMD_UI 0x00 /* Type 1 cmds/rsps */ |
79 | #define LLC_1_PDU_CMD_XID 0xAC |
80 | #define LLC_1_PDU_CMD_TEST 0xE0 |
81 | |
82 | #define LLC_2_PDU_CMD_SABME 0x6C /* Type 2 cmds/rsps */ |
83 | #define LLC_2_PDU_CMD_DISC 0x40 |
84 | #define LLC_2_PDU_RSP_UA 0x60 |
85 | #define LLC_2_PDU_RSP_DM 0x0C |
86 | #define LLC_2_PDU_RSP_FRMR 0x84 |
87 | |
88 | /* Type 1 operations */ |
89 | |
90 | /* XID information field bit masks */ |
91 | |
92 | /* LLC format identifier (byte 1) */ |
93 | #define LLC_XID_FMT_ID 0x81 /* first byte must be this */ |
94 | |
95 | /* LLC types/classes identifier (byte 2) */ |
96 | #define LLC_XID_CLASS_ZEROS_MASK 0xE0 /* these must be zeros */ |
97 | #define LLC_XID_CLASS_MASK 0x1F /* AND with byte to get below */ |
98 | |
99 | #define LLC_XID_NULL_CLASS_1 0x01 /* if NULL LSAP...use these */ |
100 | #define LLC_XID_NULL_CLASS_2 0x03 |
101 | #define LLC_XID_NULL_CLASS_3 0x05 |
102 | #define LLC_XID_NULL_CLASS_4 0x07 |
103 | |
104 | #define LLC_XID_NNULL_TYPE_1 0x01 /* if non-NULL LSAP...use these */ |
105 | #define LLC_XID_NNULL_TYPE_2 0x02 |
106 | #define LLC_XID_NNULL_TYPE_3 0x04 |
107 | #define LLC_XID_NNULL_TYPE_1_2 0x03 |
108 | #define LLC_XID_NNULL_TYPE_1_3 0x05 |
109 | #define LLC_XID_NNULL_TYPE_2_3 0x06 |
110 | #define LLC_XID_NNULL_ALL 0x07 |
111 | |
112 | /* Sender Receive Window (byte 3) */ |
113 | #define LLC_XID_RW_MASK 0xFE /* AND with value to get below */ |
114 | |
115 | #define LLC_XID_MIN_RW 0x02 /* lowest-order bit always zero */ |
116 | |
117 | /* Type 2 operations */ |
118 | |
119 | #define LLC_2_SEQ_NBR_MODULO ((u8) 128) |
120 | |
121 | /* I-PDU masks ('ctrl' is I-PDU control word) */ |
122 | #define LLC_I_GET_NS(pdu) (u8)((pdu->ctrl_1 & 0xFE) >> 1) |
123 | #define LLC_I_GET_NR(pdu) (u8)((pdu->ctrl_2 & 0xFE) >> 1) |
124 | |
125 | #define LLC_I_PF_BIT_MASK 0x01 |
126 | |
127 | #define LLC_I_PF_IS_0(pdu) ((!(pdu->ctrl_2 & LLC_I_PF_BIT_MASK)) ? 1 : 0) |
128 | #define LLC_I_PF_IS_1(pdu) ((pdu->ctrl_2 & LLC_I_PF_BIT_MASK) ? 1 : 0) |
129 | |
130 | /* S-PDU supervisory commands and responses */ |
131 | |
132 | #define LLC_S_PDU_CMD_MASK 0x0C |
133 | #define LLC_S_PDU_CMD(pdu) (pdu->ctrl_1 & LLC_S_PDU_CMD_MASK) |
134 | #define LLC_S_PDU_RSP(pdu) (pdu->ctrl_1 & LLC_S_PDU_CMD_MASK) |
135 | |
136 | #define LLC_2_PDU_CMD_RR 0x00 /* rx ready cmd */ |
137 | #define LLC_2_PDU_RSP_RR 0x00 /* rx ready rsp */ |
138 | #define LLC_2_PDU_CMD_REJ 0x08 /* reject PDU cmd */ |
139 | #define LLC_2_PDU_RSP_REJ 0x08 /* reject PDU rsp */ |
140 | #define LLC_2_PDU_CMD_RNR 0x04 /* rx not ready cmd */ |
141 | #define LLC_2_PDU_RSP_RNR 0x04 /* rx not ready rsp */ |
142 | |
143 | #define LLC_S_PF_BIT_MASK 0x01 |
144 | #define LLC_S_PF_IS_0(pdu) ((!(pdu->ctrl_2 & LLC_S_PF_BIT_MASK)) ? 1 : 0) |
145 | #define LLC_S_PF_IS_1(pdu) ((pdu->ctrl_2 & LLC_S_PF_BIT_MASK) ? 1 : 0) |
146 | |
147 | #define PDU_SUPV_GET_Nr(pdu) ((pdu->ctrl_2 & 0xFE) >> 1) |
148 | #define PDU_GET_NEXT_Vr(sn) (((sn) + 1) & ~LLC_2_SEQ_NBR_MODULO) |
149 | |
150 | /* FRMR information field macros */ |
151 | |
152 | #define FRMR_INFO_LENGTH 5 /* 5 bytes of information */ |
153 | |
154 | /* |
155 | * info is pointer to FRMR info field structure; 'rej_ctrl' is byte pointer |
156 | * (if U-PDU) or word pointer to rejected PDU control field |
157 | */ |
158 | #define FRMR_INFO_SET_REJ_CNTRL(info,rej_ctrl) \ |
159 | info->rej_pdu_ctrl = ((*((u8 *) rej_ctrl) & \ |
160 | LLC_PDU_TYPE_U) != LLC_PDU_TYPE_U ? \ |
161 | (u16)*((u16 *) rej_ctrl) : \ |
162 | (((u16) *((u8 *) rej_ctrl)) & 0x00FF)) |
163 | |
164 | /* |
165 | * Info is pointer to FRMR info field structure; 'vs' is a byte containing |
166 | * send state variable value in low-order 7 bits (insure the lowest-order |
167 | * bit remains zero (0)) |
168 | */ |
169 | #define FRMR_INFO_SET_Vs(info,vs) (info->curr_ssv = (((u8) vs) << 1)) |
170 | #define FRMR_INFO_SET_Vr(info,vr) (info->curr_rsv = (((u8) vr) << 1)) |
171 | |
172 | /* |
173 | * Info is pointer to FRMR info field structure; 'cr' is a byte containing |
174 | * the C/R bit value in the low-order bit |
175 | */ |
176 | #define FRMR_INFO_SET_C_R_BIT(info, cr) (info->curr_rsv |= (((u8) cr) & 0x01)) |
177 | |
178 | /* |
179 | * In the remaining five macros, 'info' is pointer to FRMR info field |
180 | * structure; 'ind' is a byte containing the bit value to set in the |
181 | * lowest-order bit) |
182 | */ |
183 | #define FRMR_INFO_SET_INVALID_PDU_CTRL_IND(info, ind) \ |
184 | (info->ind_bits = ((info->ind_bits & 0xFE) | (((u8) ind) & 0x01))) |
185 | |
186 | #define FRMR_INFO_SET_INVALID_PDU_INFO_IND(info, ind) \ |
187 | (info->ind_bits = ( (info->ind_bits & 0xFD) | (((u8) ind) & 0x02))) |
188 | |
189 | #define FRMR_INFO_SET_PDU_INFO_2LONG_IND(info, ind) \ |
190 | (info->ind_bits = ( (info->ind_bits & 0xFB) | (((u8) ind) & 0x04))) |
191 | |
192 | #define FRMR_INFO_SET_PDU_INVALID_Nr_IND(info, ind) \ |
193 | (info->ind_bits = ( (info->ind_bits & 0xF7) | (((u8) ind) & 0x08))) |
194 | |
195 | #define FRMR_INFO_SET_PDU_INVALID_Ns_IND(info, ind) \ |
196 | (info->ind_bits = ( (info->ind_bits & 0xEF) | (((u8) ind) & 0x10))) |
197 | |
198 | /* Sequence-numbered PDU format (4 bytes in length) */ |
199 | struct llc_pdu_sn { |
200 | u8 dsap; |
201 | u8 ssap; |
202 | u8 ctrl_1; |
203 | u8 ctrl_2; |
204 | } __packed; |
205 | |
206 | static inline struct llc_pdu_sn *llc_pdu_sn_hdr(struct sk_buff *skb) |
207 | { |
208 | return (struct llc_pdu_sn *)skb_network_header(skb); |
209 | } |
210 | |
211 | /* Un-numbered PDU format (3 bytes in length) */ |
212 | struct llc_pdu_un { |
213 | u8 dsap; |
214 | u8 ssap; |
215 | u8 ctrl_1; |
216 | } __packed; |
217 | |
218 | static inline struct llc_pdu_un *llc_pdu_un_hdr(struct sk_buff *skb) |
219 | { |
220 | return (struct llc_pdu_un *)skb_network_header(skb); |
221 | } |
222 | |
223 | /** |
224 | * llc_pdu_header_init - initializes pdu header |
225 | * @skb: input skb that header must be set into it. |
226 | * @type: type of PDU (U, I or S). |
227 | * @ssap: source sap. |
228 | * @dsap: destination sap. |
229 | * @cr: command/response bit (0 or 1). |
230 | * |
231 | * This function sets DSAP, SSAP and command/Response bit in LLC header. |
232 | */ |
233 | static inline void (struct sk_buff *skb, u8 type, |
234 | u8 ssap, u8 dsap, u8 cr) |
235 | { |
236 | int hlen = 4; /* default value for I and S types */ |
237 | struct llc_pdu_un *pdu; |
238 | |
239 | switch (type) { |
240 | case LLC_PDU_TYPE_U: |
241 | hlen = 3; |
242 | break; |
243 | case LLC_PDU_TYPE_U_XID: |
244 | hlen = 6; |
245 | break; |
246 | } |
247 | |
248 | skb_push(skb, len: hlen); |
249 | skb_reset_network_header(skb); |
250 | pdu = llc_pdu_un_hdr(skb); |
251 | pdu->dsap = dsap; |
252 | pdu->ssap = ssap; |
253 | pdu->ssap |= cr; |
254 | } |
255 | |
256 | /** |
257 | * llc_pdu_decode_sa - extracs source address (MAC) of input frame |
258 | * @skb: input skb that source address must be extracted from it. |
259 | * @sa: pointer to source address (6 byte array). |
260 | * |
261 | * This function extracts source address(MAC) of input frame. |
262 | */ |
263 | static inline void llc_pdu_decode_sa(struct sk_buff *skb, u8 *sa) |
264 | { |
265 | if (skb->protocol == htons(ETH_P_802_2)) |
266 | memcpy(sa, eth_hdr(skb)->h_source, ETH_ALEN); |
267 | } |
268 | |
269 | /** |
270 | * llc_pdu_decode_da - extracts dest address of input frame |
271 | * @skb: input skb that destination address must be extracted from it |
272 | * @da: pointer to destination address (6 byte array). |
273 | * |
274 | * This function extracts destination address(MAC) of input frame. |
275 | */ |
276 | static inline void llc_pdu_decode_da(struct sk_buff *skb, u8 *da) |
277 | { |
278 | if (skb->protocol == htons(ETH_P_802_2)) |
279 | memcpy(da, eth_hdr(skb)->h_dest, ETH_ALEN); |
280 | } |
281 | |
282 | /** |
283 | * llc_pdu_decode_ssap - extracts source SAP of input frame |
284 | * @skb: input skb that source SAP must be extracted from it. |
285 | * @ssap: source SAP (output argument). |
286 | * |
287 | * This function extracts source SAP of input frame. Right bit of SSAP is |
288 | * command/response bit. |
289 | */ |
290 | static inline void llc_pdu_decode_ssap(struct sk_buff *skb, u8 *ssap) |
291 | { |
292 | *ssap = llc_pdu_un_hdr(skb)->ssap & 0xFE; |
293 | } |
294 | |
295 | /** |
296 | * llc_pdu_decode_dsap - extracts dest SAP of input frame |
297 | * @skb: input skb that destination SAP must be extracted from it. |
298 | * @dsap: destination SAP (output argument). |
299 | * |
300 | * This function extracts destination SAP of input frame. right bit of |
301 | * DSAP designates individual/group SAP. |
302 | */ |
303 | static inline void llc_pdu_decode_dsap(struct sk_buff *skb, u8 *dsap) |
304 | { |
305 | *dsap = llc_pdu_un_hdr(skb)->dsap & 0xFE; |
306 | } |
307 | |
308 | /** |
309 | * llc_pdu_init_as_ui_cmd - sets LLC header as UI PDU |
310 | * @skb: input skb that header must be set into it. |
311 | * |
312 | * This function sets third byte of LLC header as a UI PDU. |
313 | */ |
314 | static inline void llc_pdu_init_as_ui_cmd(struct sk_buff *skb) |
315 | { |
316 | struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); |
317 | |
318 | pdu->ctrl_1 = LLC_PDU_TYPE_U; |
319 | pdu->ctrl_1 |= LLC_1_PDU_CMD_UI; |
320 | } |
321 | |
322 | /** |
323 | * llc_pdu_init_as_test_cmd - sets PDU as TEST |
324 | * @skb: Address of the skb to build |
325 | * |
326 | * Sets a PDU as TEST |
327 | */ |
328 | static inline void llc_pdu_init_as_test_cmd(struct sk_buff *skb) |
329 | { |
330 | struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); |
331 | |
332 | pdu->ctrl_1 = LLC_PDU_TYPE_U; |
333 | pdu->ctrl_1 |= LLC_1_PDU_CMD_TEST; |
334 | pdu->ctrl_1 |= LLC_U_PF_BIT_MASK; |
335 | } |
336 | |
337 | /** |
338 | * llc_pdu_init_as_test_rsp - build TEST response PDU |
339 | * @skb: Address of the skb to build |
340 | * @ev_skb: The received TEST command PDU frame |
341 | * |
342 | * Builds a pdu frame as a TEST response. |
343 | */ |
344 | static inline void llc_pdu_init_as_test_rsp(struct sk_buff *skb, |
345 | struct sk_buff *ev_skb) |
346 | { |
347 | struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); |
348 | |
349 | pdu->ctrl_1 = LLC_PDU_TYPE_U; |
350 | pdu->ctrl_1 |= LLC_1_PDU_CMD_TEST; |
351 | pdu->ctrl_1 |= LLC_U_PF_BIT_MASK; |
352 | if (ev_skb->protocol == htons(ETH_P_802_2)) { |
353 | struct llc_pdu_un *ev_pdu = llc_pdu_un_hdr(skb: ev_skb); |
354 | int dsize; |
355 | |
356 | dsize = ntohs(eth_hdr(ev_skb)->h_proto) - 3; |
357 | memcpy(((u8 *)pdu) + 3, ((u8 *)ev_pdu) + 3, dsize); |
358 | skb_put(skb, len: dsize); |
359 | } |
360 | } |
361 | |
362 | /* LLC Type 1 XID command/response information fields format */ |
363 | struct llc_xid_info { |
364 | u8 fmt_id; /* always 0x81 for LLC */ |
365 | u8 type; /* different if NULL/non-NULL LSAP */ |
366 | u8 rw; /* sender receive window */ |
367 | } __packed; |
368 | |
369 | /** |
370 | * llc_pdu_init_as_xid_cmd - sets bytes 3, 4 & 5 of LLC header as XID |
371 | * @skb: input skb that header must be set into it. |
372 | * @svcs_supported: The class of the LLC (I or II) |
373 | * @rx_window: The size of the receive window of the LLC |
374 | * |
375 | * This function sets third,fourth,fifth and sixth bytes of LLC header as |
376 | * a XID PDU. |
377 | */ |
378 | static inline void llc_pdu_init_as_xid_cmd(struct sk_buff *skb, |
379 | u8 svcs_supported, u8 rx_window) |
380 | { |
381 | struct llc_xid_info *xid_info; |
382 | struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); |
383 | |
384 | pdu->ctrl_1 = LLC_PDU_TYPE_U; |
385 | pdu->ctrl_1 |= LLC_1_PDU_CMD_XID; |
386 | pdu->ctrl_1 |= LLC_U_PF_BIT_MASK; |
387 | xid_info = (struct llc_xid_info *)(((u8 *)&pdu->ctrl_1) + 1); |
388 | xid_info->fmt_id = LLC_XID_FMT_ID; /* 0x81 */ |
389 | xid_info->type = svcs_supported; |
390 | xid_info->rw = rx_window << 1; /* size of receive window */ |
391 | |
392 | /* no need to push/put since llc_pdu_header_init() has already |
393 | * pushed 3 + 3 bytes |
394 | */ |
395 | } |
396 | |
397 | /** |
398 | * llc_pdu_init_as_xid_rsp - builds XID response PDU |
399 | * @skb: Address of the skb to build |
400 | * @svcs_supported: The class of the LLC (I or II) |
401 | * @rx_window: The size of the receive window of the LLC |
402 | * |
403 | * Builds a pdu frame as an XID response. |
404 | */ |
405 | static inline void llc_pdu_init_as_xid_rsp(struct sk_buff *skb, |
406 | u8 svcs_supported, u8 rx_window) |
407 | { |
408 | struct llc_xid_info *xid_info; |
409 | struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); |
410 | |
411 | pdu->ctrl_1 = LLC_PDU_TYPE_U; |
412 | pdu->ctrl_1 |= LLC_1_PDU_CMD_XID; |
413 | pdu->ctrl_1 |= LLC_U_PF_BIT_MASK; |
414 | |
415 | xid_info = (struct llc_xid_info *)(((u8 *)&pdu->ctrl_1) + 1); |
416 | xid_info->fmt_id = LLC_XID_FMT_ID; |
417 | xid_info->type = svcs_supported; |
418 | xid_info->rw = rx_window << 1; |
419 | skb_put(skb, len: sizeof(struct llc_xid_info)); |
420 | } |
421 | |
422 | /* LLC Type 2 FRMR response information field format */ |
423 | struct llc_frmr_info { |
424 | u16 rej_pdu_ctrl; /* bits 1-8 if U-PDU */ |
425 | u8 curr_ssv; /* current send state variable val */ |
426 | u8 curr_rsv; /* current receive state variable */ |
427 | u8 ind_bits; /* indicator bits set with macro */ |
428 | } __packed; |
429 | |
430 | void llc_pdu_set_cmd_rsp(struct sk_buff *skb, u8 type); |
431 | void llc_pdu_set_pf_bit(struct sk_buff *skb, u8 bit_value); |
432 | void llc_pdu_decode_pf_bit(struct sk_buff *skb, u8 *pf_bit); |
433 | void llc_pdu_init_as_disc_cmd(struct sk_buff *skb, u8 p_bit); |
434 | void llc_pdu_init_as_i_cmd(struct sk_buff *skb, u8 p_bit, u8 ns, u8 nr); |
435 | void llc_pdu_init_as_rej_cmd(struct sk_buff *skb, u8 p_bit, u8 nr); |
436 | void llc_pdu_init_as_rnr_cmd(struct sk_buff *skb, u8 p_bit, u8 nr); |
437 | void llc_pdu_init_as_rr_cmd(struct sk_buff *skb, u8 p_bit, u8 nr); |
438 | void llc_pdu_init_as_sabme_cmd(struct sk_buff *skb, u8 p_bit); |
439 | void llc_pdu_init_as_dm_rsp(struct sk_buff *skb, u8 f_bit); |
440 | void llc_pdu_init_as_frmr_rsp(struct sk_buff *skb, struct llc_pdu_sn *prev_pdu, |
441 | u8 f_bit, u8 vs, u8 vr, u8 vzyxw); |
442 | void llc_pdu_init_as_rr_rsp(struct sk_buff *skb, u8 f_bit, u8 nr); |
443 | void llc_pdu_init_as_rej_rsp(struct sk_buff *skb, u8 f_bit, u8 nr); |
444 | void llc_pdu_init_as_rnr_rsp(struct sk_buff *skb, u8 f_bit, u8 nr); |
445 | void llc_pdu_init_as_ua_rsp(struct sk_buff *skb, u8 f_bit); |
446 | #endif /* LLC_PDU_H */ |
447 | |