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1 | #ifndef _LINUX_DCCP_H |
2 | #define _LINUX_DCCP_H |
3 | |
4 | #include <linux/types.h> |
5 | #include <asm/byteorder.h> |
6 | |
7 | /** |
8 | * struct dccp_hdr - generic part of DCCP packet header |
9 | * |
10 | * @dccph_sport - Relevant port on the endpoint that sent this packet |
11 | * @dccph_dport - Relevant port on the other endpoint |
12 | * @dccph_doff - Data Offset from the start of the DCCP header, in 32-bit words |
13 | * @dccph_ccval - Used by the HC-Sender CCID |
14 | * @dccph_cscov - Parts of the packet that are covered by the Checksum field |
15 | * @dccph_checksum - Internet checksum, depends on dccph_cscov |
16 | * @dccph_x - 0 = 24 bit sequence number, 1 = 48 |
17 | * @dccph_type - packet type, see DCCP_PKT_ prefixed macros |
18 | * @dccph_seq - sequence number high or low order 24 bits, depends on dccph_x |
19 | */ |
20 | struct dccp_hdr { |
21 | __be16 dccph_sport, |
22 | dccph_dport; |
23 | __u8 dccph_doff; |
24 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
25 | __u8 dccph_cscov:4, |
26 | dccph_ccval:4; |
27 | #elif defined(__BIG_ENDIAN_BITFIELD) |
28 | __u8 dccph_ccval:4, |
29 | dccph_cscov:4; |
30 | #else |
31 | #error "Adjust your <asm/byteorder.h> defines" |
32 | #endif |
33 | __sum16 dccph_checksum; |
34 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
35 | __u8 dccph_x:1, |
36 | dccph_type:4, |
37 | dccph_reserved:3; |
38 | #elif defined(__BIG_ENDIAN_BITFIELD) |
39 | __u8 dccph_reserved:3, |
40 | dccph_type:4, |
41 | dccph_x:1; |
42 | #else |
43 | #error "Adjust your <asm/byteorder.h> defines" |
44 | #endif |
45 | __u8 dccph_seq2; |
46 | __be16 dccph_seq; |
47 | }; |
48 | |
49 | /** |
50 | * struct dccp_hdr_ext - the low bits of a 48 bit seq packet |
51 | * |
52 | * @dccph_seq_low - low 24 bits of a 48 bit seq packet |
53 | */ |
54 | struct dccp_hdr_ext { |
55 | __be32 dccph_seq_low; |
56 | }; |
57 | |
58 | /** |
59 | * struct dccp_hdr_request - Connection initiation request header |
60 | * |
61 | * @dccph_req_service - Service to which the client app wants to connect |
62 | */ |
63 | struct dccp_hdr_request { |
64 | __be32 dccph_req_service; |
65 | }; |
66 | /** |
67 | * struct dccp_hdr_ack_bits - acknowledgment bits common to most packets |
68 | * |
69 | * @dccph_resp_ack_nr_high - 48 bit ack number high order bits, contains GSR |
70 | * @dccph_resp_ack_nr_low - 48 bit ack number low order bits, contains GSR |
71 | */ |
72 | struct dccp_hdr_ack_bits { |
73 | __be16 dccph_reserved1; |
74 | __be16 dccph_ack_nr_high; |
75 | __be32 dccph_ack_nr_low; |
76 | }; |
77 | /** |
78 | * struct dccp_hdr_response - Connection initiation response header |
79 | * |
80 | * @dccph_resp_ack - 48 bit Acknowledgment Number Subheader (5.3) |
81 | * @dccph_resp_service - Echoes the Service Code on a received DCCP-Request |
82 | */ |
83 | struct dccp_hdr_response { |
84 | struct dccp_hdr_ack_bits dccph_resp_ack; |
85 | __be32 dccph_resp_service; |
86 | }; |
87 | |
88 | /** |
89 | * struct dccp_hdr_reset - Unconditionally shut down a connection |
90 | * |
91 | * @dccph_reset_ack - 48 bit Acknowledgment Number Subheader (5.6) |
92 | * @dccph_reset_code - one of %dccp_reset_codes |
93 | * @dccph_reset_data - the Data 1 ... Data 3 fields from 5.6 |
94 | */ |
95 | struct dccp_hdr_reset { |
96 | struct dccp_hdr_ack_bits dccph_reset_ack; |
97 | __u8 dccph_reset_code, |
98 | dccph_reset_data[3]; |
99 | }; |
100 | |
101 | enum dccp_pkt_type { |
102 | DCCP_PKT_REQUEST = 0, |
103 | DCCP_PKT_RESPONSE, |
104 | DCCP_PKT_DATA, |
105 | DCCP_PKT_ACK, |
106 | DCCP_PKT_DATAACK, |
107 | DCCP_PKT_CLOSEREQ, |
108 | DCCP_PKT_CLOSE, |
109 | DCCP_PKT_RESET, |
110 | DCCP_PKT_SYNC, |
111 | DCCP_PKT_SYNCACK, |
112 | DCCP_PKT_INVALID, |
113 | }; |
114 | |
115 | #define DCCP_NR_PKT_TYPES DCCP_PKT_INVALID |
116 | |
117 | static inline unsigned int dccp_packet_hdr_len(const __u8 type) |
118 | { |
119 | if (type == DCCP_PKT_DATA) |
120 | return 0; |
121 | if (type == DCCP_PKT_DATAACK || |
122 | type == DCCP_PKT_ACK || |
123 | type == DCCP_PKT_SYNC || |
124 | type == DCCP_PKT_SYNCACK || |
125 | type == DCCP_PKT_CLOSE || |
126 | type == DCCP_PKT_CLOSEREQ) |
127 | return sizeof(struct dccp_hdr_ack_bits); |
128 | if (type == DCCP_PKT_REQUEST) |
129 | return sizeof(struct dccp_hdr_request); |
130 | if (type == DCCP_PKT_RESPONSE) |
131 | return sizeof(struct dccp_hdr_response); |
132 | return sizeof(struct dccp_hdr_reset); |
133 | } |
134 | enum dccp_reset_codes { |
135 | DCCP_RESET_CODE_UNSPECIFIED = 0, |
136 | DCCP_RESET_CODE_CLOSED, |
137 | DCCP_RESET_CODE_ABORTED, |
138 | DCCP_RESET_CODE_NO_CONNECTION, |
139 | DCCP_RESET_CODE_PACKET_ERROR, |
140 | DCCP_RESET_CODE_OPTION_ERROR, |
141 | DCCP_RESET_CODE_MANDATORY_ERROR, |
142 | DCCP_RESET_CODE_CONNECTION_REFUSED, |
143 | DCCP_RESET_CODE_BAD_SERVICE_CODE, |
144 | DCCP_RESET_CODE_TOO_BUSY, |
145 | DCCP_RESET_CODE_BAD_INIT_COOKIE, |
146 | DCCP_RESET_CODE_AGGRESSION_PENALTY, |
147 | |
148 | DCCP_MAX_RESET_CODES /* Leave at the end! */ |
149 | }; |
150 | |
151 | /* DCCP options */ |
152 | enum { |
153 | DCCPO_PADDING = 0, |
154 | DCCPO_MANDATORY = 1, |
155 | DCCPO_MIN_RESERVED = 3, |
156 | DCCPO_MAX_RESERVED = 31, |
157 | DCCPO_CHANGE_L = 32, |
158 | DCCPO_CONFIRM_L = 33, |
159 | DCCPO_CHANGE_R = 34, |
160 | DCCPO_CONFIRM_R = 35, |
161 | DCCPO_NDP_COUNT = 37, |
162 | DCCPO_ACK_VECTOR_0 = 38, |
163 | DCCPO_ACK_VECTOR_1 = 39, |
164 | DCCPO_TIMESTAMP = 41, |
165 | DCCPO_TIMESTAMP_ECHO = 42, |
166 | DCCPO_ELAPSED_TIME = 43, |
167 | DCCPO_MAX = 45, |
168 | DCCPO_MIN_CCID_SPECIFIC = 128, |
169 | DCCPO_MAX_CCID_SPECIFIC = 255, |
170 | }; |
171 | /* maximum size of a single TLV-encoded DCCP option (sans type/len bytes) */ |
172 | #define DCCP_SINGLE_OPT_MAXLEN 253 |
173 | |
174 | /* DCCP CCIDS */ |
175 | enum { |
176 | DCCPC_CCID2 = 2, |
177 | DCCPC_CCID3 = 3, |
178 | }; |
179 | |
180 | /* DCCP features (RFC 4340 section 6.4) */ |
181 | enum dccp_feature_numbers { |
182 | DCCPF_RESERVED = 0, |
183 | DCCPF_CCID = 1, |
184 | DCCPF_SHORT_SEQNOS = 2, |
185 | DCCPF_SEQUENCE_WINDOW = 3, |
186 | DCCPF_ECN_INCAPABLE = 4, |
187 | DCCPF_ACK_RATIO = 5, |
188 | DCCPF_SEND_ACK_VECTOR = 6, |
189 | DCCPF_SEND_NDP_COUNT = 7, |
190 | DCCPF_MIN_CSUM_COVER = 8, |
191 | DCCPF_DATA_CHECKSUM = 9, |
192 | /* 10-127 reserved */ |
193 | DCCPF_MIN_CCID_SPECIFIC = 128, |
194 | DCCPF_SEND_LEV_RATE = 192, /* RFC 4342, sec. 8.4 */ |
195 | DCCPF_MAX_CCID_SPECIFIC = 255, |
196 | }; |
197 | |
198 | /* DCCP socket options */ |
199 | #define DCCP_SOCKOPT_PACKET_SIZE 1 /* XXX deprecated, without effect */ |
200 | #define DCCP_SOCKOPT_SERVICE 2 |
201 | #define DCCP_SOCKOPT_CHANGE_L 3 |
202 | #define DCCP_SOCKOPT_CHANGE_R 4 |
203 | #define DCCP_SOCKOPT_GET_CUR_MPS 5 |
204 | #define DCCP_SOCKOPT_SERVER_TIMEWAIT 6 |
205 | #define DCCP_SOCKOPT_SEND_CSCOV 10 |
206 | #define DCCP_SOCKOPT_RECV_CSCOV 11 |
207 | #define DCCP_SOCKOPT_AVAILABLE_CCIDS 12 |
208 | #define DCCP_SOCKOPT_CCID 13 |
209 | #define DCCP_SOCKOPT_TX_CCID 14 |
210 | #define DCCP_SOCKOPT_RX_CCID 15 |
211 | #define DCCP_SOCKOPT_CCID_RX_INFO 128 |
212 | #define DCCP_SOCKOPT_CCID_TX_INFO 192 |
213 | |
214 | /* maximum number of services provided on the same listening port */ |
215 | #define DCCP_SERVICE_LIST_MAX_LEN 32 |
216 | |
217 | #ifdef __KERNEL__ |
218 | |
219 | #include <linux/in.h> |
220 | #include <linux/ktime.h> |
221 | #include <linux/list.h> |
222 | #include <linux/uio.h> |
223 | #include <linux/workqueue.h> |
224 | |
225 | #include <net/inet_connection_sock.h> |
226 | #include <net/inet_sock.h> |
227 | #include <net/inet_timewait_sock.h> |
228 | #include <net/tcp_states.h> |
229 | |
230 | enum dccp_state { |
231 | DCCP_OPEN = TCP_ESTABLISHED, |
232 | DCCP_REQUESTING = TCP_SYN_SENT, |
233 | DCCP_LISTEN = TCP_LISTEN, |
234 | DCCP_RESPOND = TCP_SYN_RECV, |
235 | /* |
236 | * States involved in closing a DCCP connection: |
237 | * 1) ACTIVE_CLOSEREQ is entered by a server sending a CloseReq. |
238 | * |
239 | * 2) CLOSING can have three different meanings (RFC 4340, 8.3): |
240 | * a. Client has performed active-close, has sent a Close to the server |
241 | * from state OPEN or PARTOPEN, and is waiting for the final Reset |
242 | * (in this case, SOCK_DONE == 1). |
243 | * b. Client is asked to perform passive-close, by receiving a CloseReq |
244 | * in (PART)OPEN state. It sends a Close and waits for final Reset |
245 | * (in this case, SOCK_DONE == 0). |
246 | * c. Server performs an active-close as in (a), keeps TIMEWAIT state. |
247 | * |
248 | * 3) The following intermediate states are employed to give passively |
249 | * closing nodes a chance to process their unread data: |
250 | * - PASSIVE_CLOSE (from OPEN => CLOSED) and |
251 | * - PASSIVE_CLOSEREQ (from (PART)OPEN to CLOSING; case (b) above). |
252 | */ |
253 | DCCP_ACTIVE_CLOSEREQ = TCP_FIN_WAIT1, |
254 | DCCP_PASSIVE_CLOSE = TCP_CLOSE_WAIT, /* any node receiving a Close */ |
255 | DCCP_CLOSING = TCP_CLOSING, |
256 | DCCP_TIME_WAIT = TCP_TIME_WAIT, |
257 | DCCP_CLOSED = TCP_CLOSE, |
258 | DCCP_PARTOPEN = TCP_MAX_STATES, |
259 | DCCP_PASSIVE_CLOSEREQ, /* clients receiving CloseReq */ |
260 | DCCP_MAX_STATES |
261 | }; |
262 | |
263 | #define DCCP_STATE_MASK 0x1f |
264 | |
265 | enum { |
266 | DCCPF_OPEN = TCPF_ESTABLISHED, |
267 | DCCPF_REQUESTING = TCPF_SYN_SENT, |
268 | DCCPF_LISTEN = TCPF_LISTEN, |
269 | DCCPF_RESPOND = TCPF_SYN_RECV, |
270 | DCCPF_ACTIVE_CLOSEREQ = TCPF_FIN_WAIT1, |
271 | DCCPF_CLOSING = TCPF_CLOSING, |
272 | DCCPF_TIME_WAIT = TCPF_TIME_WAIT, |
273 | DCCPF_CLOSED = TCPF_CLOSE, |
274 | DCCPF_PARTOPEN = (1 << DCCP_PARTOPEN), |
275 | }; |
276 | |
277 | static inline struct dccp_hdr *dccp_hdr(const struct sk_buff *skb) |
278 | { |
279 | return (struct dccp_hdr *)skb_transport_header(skb); |
280 | } |
281 | |
282 | static inline struct dccp_hdr *dccp_zeroed_hdr(struct sk_buff *skb, int headlen) |
283 | { |
284 | skb_push(skb, headlen); |
285 | skb_reset_transport_header(skb); |
286 | return memset(skb_transport_header(skb), 0, headlen); |
287 | } |
288 | |
289 | static inline struct dccp_hdr_ext *dccp_hdrx(const struct dccp_hdr *dh) |
290 | { |
291 | return (struct dccp_hdr_ext *)((unsigned char *)dh + sizeof(*dh)); |
292 | } |
293 | |
294 | static inline unsigned int __dccp_basic_hdr_len(const struct dccp_hdr *dh) |
295 | { |
296 | return sizeof(*dh) + (dh->dccph_x ? sizeof(struct dccp_hdr_ext) : 0); |
297 | } |
298 | |
299 | static inline unsigned int dccp_basic_hdr_len(const struct sk_buff *skb) |
300 | { |
301 | const struct dccp_hdr *dh = dccp_hdr(skb); |
302 | return __dccp_basic_hdr_len(dh); |
303 | } |
304 | |
305 | static inline __u64 dccp_hdr_seq(const struct dccp_hdr *dh) |
306 | { |
307 | __u64 seq_nr = ntohs(dh->dccph_seq); |
308 | |
309 | if (dh->dccph_x != 0) |
310 | seq_nr = (seq_nr << 32) + ntohl(dccp_hdrx(dh)->dccph_seq_low); |
311 | else |
312 | seq_nr += (u32)dh->dccph_seq2 << 16; |
313 | |
314 | return seq_nr; |
315 | } |
316 | |
317 | static inline struct dccp_hdr_request *dccp_hdr_request(struct sk_buff *skb) |
318 | { |
319 | return (struct dccp_hdr_request *)(skb_transport_header(skb) + |
320 | dccp_basic_hdr_len(skb)); |
321 | } |
322 | |
323 | static inline struct dccp_hdr_ack_bits *dccp_hdr_ack_bits(const struct sk_buff *skb) |
324 | { |
325 | return (struct dccp_hdr_ack_bits *)(skb_transport_header(skb) + |
326 | dccp_basic_hdr_len(skb)); |
327 | } |
328 | |
329 | static inline u64 dccp_hdr_ack_seq(const struct sk_buff *skb) |
330 | { |
331 | const struct dccp_hdr_ack_bits *dhack = dccp_hdr_ack_bits(skb); |
332 | return ((u64)ntohs(dhack->dccph_ack_nr_high) << 32) + ntohl(dhack->dccph_ack_nr_low); |
333 | } |
334 | |
335 | static inline struct dccp_hdr_response *dccp_hdr_response(struct sk_buff *skb) |
336 | { |
337 | return (struct dccp_hdr_response *)(skb_transport_header(skb) + |
338 | dccp_basic_hdr_len(skb)); |
339 | } |
340 | |
341 | static inline struct dccp_hdr_reset *dccp_hdr_reset(struct sk_buff *skb) |
342 | { |
343 | return (struct dccp_hdr_reset *)(skb_transport_header(skb) + |
344 | dccp_basic_hdr_len(skb)); |
345 | } |
346 | |
347 | static inline unsigned int __dccp_hdr_len(const struct dccp_hdr *dh) |
348 | { |
349 | return __dccp_basic_hdr_len(dh) + |
350 | dccp_packet_hdr_len(dh->dccph_type); |
351 | } |
352 | |
353 | static inline unsigned int dccp_hdr_len(const struct sk_buff *skb) |
354 | { |
355 | return __dccp_hdr_len(dccp_hdr(skb)); |
356 | } |
357 | |
358 | /** |
359 | * struct dccp_request_sock - represent DCCP-specific connection request |
360 | * @dreq_inet_rsk: structure inherited from |
361 | * @dreq_iss: initial sequence number sent on the Response (RFC 4340, 7.1) |
362 | * @dreq_isr: initial sequence number received on the Request |
363 | * @dreq_service: service code present on the Request (there is just one) |
364 | * @dreq_featneg: feature negotiation options for this connection |
365 | * The following two fields are analogous to the ones in dccp_sock: |
366 | * @dreq_timestamp_echo: last received timestamp to echo (13.1) |
367 | * @dreq_timestamp_echo: the time of receiving the last @dreq_timestamp_echo |
368 | */ |
369 | struct dccp_request_sock { |
370 | struct inet_request_sock dreq_inet_rsk; |
371 | __u64 dreq_iss; |
372 | __u64 dreq_isr; |
373 | __be32 dreq_service; |
374 | struct list_head dreq_featneg; |
375 | __u32 dreq_timestamp_echo; |
376 | __u32 dreq_timestamp_time; |
377 | }; |
378 | |
379 | static inline struct dccp_request_sock *dccp_rsk(const struct request_sock *req) |
380 | { |
381 | return (struct dccp_request_sock *)req; |
382 | } |
383 | |
384 | extern struct inet_timewait_death_row dccp_death_row; |
385 | |
386 | extern int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq, |
387 | struct sk_buff *skb); |
388 | |
389 | struct dccp_options_received { |
390 | u64 dccpor_ndp:48; |
391 | u32 dccpor_timestamp; |
392 | u32 dccpor_timestamp_echo; |
393 | u32 dccpor_elapsed_time; |
394 | }; |
395 | |
396 | struct ccid; |
397 | |
398 | enum dccp_role { |
399 | DCCP_ROLE_UNDEFINED, |
400 | DCCP_ROLE_LISTEN, |
401 | DCCP_ROLE_CLIENT, |
402 | DCCP_ROLE_SERVER, |
403 | }; |
404 | |
405 | struct dccp_service_list { |
406 | __u32 dccpsl_nr; |
407 | __be32 dccpsl_list[0]; |
408 | }; |
409 | |
410 | #define DCCP_SERVICE_INVALID_VALUE htonl((__u32)-1) |
411 | #define DCCP_SERVICE_CODE_IS_ABSENT 0 |
412 | |
413 | static inline int dccp_list_has_service(const struct dccp_service_list *sl, |
414 | const __be32 service) |
415 | { |
416 | if (likely(sl != NULL)) { |
417 | u32 i = sl->dccpsl_nr; |
418 | while (i--) |
419 | if (sl->dccpsl_list[i] == service) |
420 | return 1; |
421 | } |
422 | return 0; |
423 | } |
424 | |
425 | struct dccp_ackvec; |
426 | |
427 | /** |
428 | * struct dccp_sock - DCCP socket state |
429 | * |
430 | * @dccps_swl - sequence number window low |
431 | * @dccps_swh - sequence number window high |
432 | * @dccps_awl - acknowledgement number window low |
433 | * @dccps_awh - acknowledgement number window high |
434 | * @dccps_iss - initial sequence number sent |
435 | * @dccps_isr - initial sequence number received |
436 | * @dccps_osr - first OPEN sequence number received |
437 | * @dccps_gss - greatest sequence number sent |
438 | * @dccps_gsr - greatest valid sequence number received |
439 | * @dccps_gar - greatest valid ack number received on a non-Sync; initialized to %dccps_iss |
440 | * @dccps_service - first (passive sock) or unique (active sock) service code |
441 | * @dccps_service_list - second .. last service code on passive socket |
442 | * @dccps_timestamp_echo - latest timestamp received on a TIMESTAMP option |
443 | * @dccps_timestamp_time - time of receiving latest @dccps_timestamp_echo |
444 | * @dccps_l_ack_ratio - feature-local Ack Ratio |
445 | * @dccps_r_ack_ratio - feature-remote Ack Ratio |
446 | * @dccps_l_seq_win - local Sequence Window (influences ack number validity) |
447 | * @dccps_r_seq_win - remote Sequence Window (influences seq number validity) |
448 | * @dccps_pcslen - sender partial checksum coverage (via sockopt) |
449 | * @dccps_pcrlen - receiver partial checksum coverage (via sockopt) |
450 | * @dccps_send_ndp_count - local Send NDP Count feature (7.7.2) |
451 | * @dccps_ndp_count - number of Non Data Packets since last data packet |
452 | * @dccps_mss_cache - current value of MSS (path MTU minus header sizes) |
453 | * @dccps_rate_last - timestamp for rate-limiting DCCP-Sync (RFC 4340, 7.5.4) |
454 | * @dccps_featneg - tracks feature-negotiation state (mostly during handshake) |
455 | * @dccps_hc_rx_ackvec - rx half connection ack vector |
456 | * @dccps_hc_rx_ccid - CCID used for the receiver (or receiving half-connection) |
457 | * @dccps_hc_tx_ccid - CCID used for the sender (or sending half-connection) |
458 | * @dccps_options_received - parsed set of retrieved options |
459 | * @dccps_role - role of this sock, one of %dccp_role |
460 | * @dccps_hc_rx_insert_options - receiver wants to add options when acking |
461 | * @dccps_hc_tx_insert_options - sender wants to add options when sending |
462 | * @dccps_server_timewait - server holds timewait state on close (RFC 4340, 8.3) |
463 | * @dccps_xmit_timer - timer for when CCID is not ready to send |
464 | * @dccps_syn_rtt - RTT sample from Request/Response exchange (in usecs) |
465 | */ |
466 | struct dccp_sock { |
467 | /* inet_connection_sock has to be the first member of dccp_sock */ |
468 | struct inet_connection_sock dccps_inet_connection; |
469 | #define dccps_syn_rtt dccps_inet_connection.icsk_ack.lrcvtime |
470 | __u64 dccps_swl; |
471 | __u64 dccps_swh; |
472 | __u64 dccps_awl; |
473 | __u64 dccps_awh; |
474 | __u64 dccps_iss; |
475 | __u64 dccps_isr; |
476 | __u64 dccps_osr; |
477 | __u64 dccps_gss; |
478 | __u64 dccps_gsr; |
479 | __u64 dccps_gar; |
480 | __be32 dccps_service; |
481 | __u32 dccps_mss_cache; |
482 | struct dccp_service_list *dccps_service_list; |
483 | __u32 dccps_timestamp_echo; |
484 | __u32 dccps_timestamp_time; |
485 | __u16 dccps_l_ack_ratio; |
486 | __u16 dccps_r_ack_ratio; |
487 | __u64 dccps_l_seq_win:48; |
488 | __u64 dccps_r_seq_win:48; |
489 | __u8 dccps_pcslen:4; |
490 | __u8 dccps_pcrlen:4; |
491 | __u8 dccps_send_ndp_count:1; |
492 | __u64 dccps_ndp_count:48; |
493 | unsigned long dccps_rate_last; |
494 | struct list_head dccps_featneg; |
495 | struct dccp_ackvec *dccps_hc_rx_ackvec; |
496 | struct ccid *dccps_hc_rx_ccid; |
497 | struct ccid *dccps_hc_tx_ccid; |
498 | struct dccp_options_received dccps_options_received; |
499 | enum dccp_role dccps_role:2; |
500 | __u8 dccps_hc_rx_insert_options:1; |
501 | __u8 dccps_hc_tx_insert_options:1; |
502 | __u8 dccps_server_timewait:1; |
503 | struct timer_list dccps_xmit_timer; |
504 | }; |
505 | |
506 | static inline struct dccp_sock *dccp_sk(const struct sock *sk) |
507 | { |
508 | return (struct dccp_sock *)sk; |
509 | } |
510 | |
511 | static inline const char *dccp_role(const struct sock *sk) |
512 | { |
513 | switch (dccp_sk(sk)->dccps_role) { |
514 | case DCCP_ROLE_UNDEFINED: return "undefined"; |
515 | case DCCP_ROLE_LISTEN: return "listen"; |
516 | case DCCP_ROLE_SERVER: return "server"; |
517 | case DCCP_ROLE_CLIENT: return "client"; |
518 | } |
519 | return NULL; |
520 | } |
521 | |
522 | #endif /* __KERNEL__ */ |
523 | |
524 | #endif /* _LINUX_DCCP_H */ |
525 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
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jz47xx
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master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9