Commit | Line | Data |
---|---|---|
8ae0e4b4 | 1 | /* |
e7a3707f | 2 | * Copyright (c) 1982, 1986, 1988, 1990, 1993 |
1611db1e | 3 | * The Regents of the University of California. All rights reserved. |
8ae0e4b4 | 4 | * |
e5b84169 | 5 | * %sccs.include.redist.c% |
2b6b6284 | 6 | * |
1611db1e | 7 | * @(#)udp_usrreq.c 8.4 (Berkeley) %G% |
8ae0e4b4 | 8 | */ |
20666ad3 | 9 | |
5548a02f KB |
10 | #include <sys/param.h> |
11 | #include <sys/malloc.h> | |
12 | #include <sys/mbuf.h> | |
13 | #include <sys/protosw.h> | |
14 | #include <sys/socket.h> | |
15 | #include <sys/socketvar.h> | |
16 | #include <sys/errno.h> | |
17 | #include <sys/stat.h> | |
18 | ||
19 | #include <net/if.h> | |
20 | #include <net/route.h> | |
21 | ||
22 | #include <netinet/in.h> | |
23 | #include <netinet/in_systm.h> | |
24 | #include <netinet/ip.h> | |
25 | #include <netinet/in_pcb.h> | |
26 | #include <netinet/ip_var.h> | |
27 | #include <netinet/ip_icmp.h> | |
28 | #include <netinet/udp.h> | |
29 | #include <netinet/udp_var.h> | |
d52566dd | 30 | |
2b4b57cd BJ |
31 | /* |
32 | * UDP protocol implementation. | |
33 | * Per RFC 768, August, 1980. | |
34 | */ | |
c50542f3 | 35 | #ifndef COMPAT_42 |
dd8707ae | 36 | int udpcksum = 1; |
c50542f3 MK |
37 | #else |
38 | int udpcksum = 0; /* XXX */ | |
39 | #endif | |
40 | ||
5328bc49 | 41 | struct sockaddr_in udp_in = { sizeof(udp_in), AF_INET }; |
c46785cb KB |
42 | struct inpcb *udp_last_inpcb = &udb; |
43 | ||
44 | static void udp_detach __P((struct inpcb *)); | |
45 | static void udp_notify __P((struct inpcb *, int)); | |
46 | static struct mbuf *udp_saveopt __P((caddr_t, int, int)); | |
47 | ||
48 | void | |
49 | udp_init() | |
50 | { | |
51 | udb.inp_next = udb.inp_prev = &udb; | |
52 | } | |
eb44bfb2 | 53 | |
c46785cb | 54 | void |
9d91b170 MK |
55 | udp_input(m, iphlen) |
56 | register struct mbuf *m; | |
57 | int iphlen; | |
1bd53abe | 58 | { |
0dfbe263 MK |
59 | register struct ip *ip; |
60 | register struct udphdr *uh; | |
53a5409e | 61 | register struct inpcb *inp; |
5921352b | 62 | struct mbuf *opts = 0; |
e199a8a5 | 63 | int len; |
0dfbe263 | 64 | struct ip save_ip; |
eb44bfb2 | 65 | |
5921352b | 66 | udpstat.udps_ipackets++; |
9f5c260d MK |
67 | |
68 | /* | |
69 | * Strip IP options, if any; should skip this, | |
70 | * make available to user, and use on returned packets, | |
71 | * but we don't yet have a way to check the checksum | |
72 | * with options still present. | |
73 | */ | |
74 | if (iphlen > sizeof (struct ip)) { | |
0dfbe263 | 75 | ip_stripoptions(m, (struct mbuf *)0); |
9f5c260d MK |
76 | iphlen = sizeof(struct ip); |
77 | } | |
78 | ||
2b4b57cd | 79 | /* |
4aed14e3 | 80 | * Get IP and UDP header together in first mbuf. |
2b4b57cd | 81 | */ |
0dfbe263 MK |
82 | ip = mtod(m, struct ip *); |
83 | if (m->m_len < iphlen + sizeof(struct udphdr)) { | |
84 | if ((m = m_pullup(m, iphlen + sizeof(struct udphdr))) == 0) { | |
7212ba67 MK |
85 | udpstat.udps_hdrops++; |
86 | return; | |
87 | } | |
0dfbe263 | 88 | ip = mtod(m, struct ip *); |
7212ba67 | 89 | } |
0dfbe263 | 90 | uh = (struct udphdr *)((caddr_t)ip + iphlen); |
2b4b57cd BJ |
91 | |
92 | /* | |
4aed14e3 BJ |
93 | * Make mbuf data length reflect UDP length. |
94 | * If not enough data to reflect UDP length, drop. | |
2b4b57cd | 95 | */ |
0dfbe263 MK |
96 | len = ntohs((u_short)uh->uh_ulen); |
97 | if (ip->ip_len != len) { | |
98 | if (len > ip->ip_len) { | |
2b4b57cd BJ |
99 | udpstat.udps_badlen++; |
100 | goto bad; | |
101 | } | |
0dfbe263 MK |
102 | m_adj(m, len - ip->ip_len); |
103 | /* ip->ip_len = len; */ | |
2b4b57cd | 104 | } |
dcea2497 | 105 | /* |
0dfbe263 MK |
106 | * Save a copy of the IP header in case we want restore it |
107 | * for sending an ICMP error message in response. | |
dcea2497 | 108 | */ |
0dfbe263 | 109 | save_ip = *ip; |
2b4b57cd BJ |
110 | |
111 | /* | |
4aed14e3 | 112 | * Checksum extended UDP header and data. |
2b4b57cd | 113 | */ |
0dfbe263 MK |
114 | if (udpcksum && uh->uh_sum) { |
115 | ((struct ipovly *)ip)->ih_next = 0; | |
116 | ((struct ipovly *)ip)->ih_prev = 0; | |
117 | ((struct ipovly *)ip)->ih_x1 = 0; | |
118 | ((struct ipovly *)ip)->ih_len = uh->uh_ulen; | |
119 | if (uh->uh_sum = in_cksum(m, len + sizeof (struct ip))) { | |
2b4b57cd | 120 | udpstat.udps_badsum++; |
eb44bfb2 BJ |
121 | m_freem(m); |
122 | return; | |
123 | } | |
124 | } | |
2b4b57cd | 125 | |
c63cb169 | 126 | if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) || |
09ed489e | 127 | in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) { |
d6fa15c2 KS |
128 | struct socket *last; |
129 | /* | |
130 | * Deliver a multicast or broadcast datagram to *all* sockets | |
131 | * for which the local and remote addresses and ports match | |
132 | * those of the incoming datagram. This allows more than | |
133 | * one process to receive multi/broadcasts on the same port. | |
134 | * (This really ought to be done for unicast datagrams as | |
135 | * well, but that would cause problems with existing | |
136 | * applications that open both address-specific sockets and | |
137 | * a wildcard socket listening to the same port -- they would | |
138 | * end up receiving duplicates of every unicast datagram. | |
139 | * Those applications open the multiple sockets to overcome an | |
140 | * inadequacy of the UDP socket interface, but for backwards | |
141 | * compatibility we avoid the problem here rather than | |
69d96ae2 | 142 | * fixing the interface. Maybe 4.5BSD will remedy this?) |
d6fa15c2 KS |
143 | */ |
144 | ||
145 | /* | |
146 | * Construct sockaddr format source address. | |
147 | */ | |
148 | udp_in.sin_port = uh->uh_sport; | |
149 | udp_in.sin_addr = ip->ip_src; | |
150 | m->m_len -= sizeof (struct udpiphdr); | |
151 | m->m_data += sizeof (struct udpiphdr); | |
152 | /* | |
153 | * Locate pcb(s) for datagram. | |
154 | * (Algorithm copied from raw_intr().) | |
155 | */ | |
156 | last = NULL; | |
157 | for (inp = udb.inp_next; inp != &udb; inp = inp->inp_next) { | |
158 | if (inp->inp_lport != uh->uh_dport) | |
159 | continue; | |
160 | if (inp->inp_laddr.s_addr != INADDR_ANY) { | |
161 | if (inp->inp_laddr.s_addr != | |
162 | ip->ip_dst.s_addr) | |
163 | continue; | |
164 | } | |
165 | if (inp->inp_faddr.s_addr != INADDR_ANY) { | |
166 | if (inp->inp_faddr.s_addr != | |
167 | ip->ip_src.s_addr || | |
168 | inp->inp_fport != uh->uh_sport) | |
169 | continue; | |
170 | } | |
171 | ||
172 | if (last != NULL) { | |
173 | struct mbuf *n; | |
174 | ||
175 | if ((n = m_copy(m, 0, M_COPYALL)) != NULL) { | |
176 | if (sbappendaddr(&last->so_rcv, | |
177 | (struct sockaddr *)&udp_in, | |
69d96ae2 | 178 | n, (struct mbuf *)0) == 0) { |
d6fa15c2 | 179 | m_freem(n); |
69d96ae2 AC |
180 | udpstat.udps_fullsock++; |
181 | } else | |
d6fa15c2 KS |
182 | sorwakeup(last); |
183 | } | |
184 | } | |
185 | last = inp->inp_socket; | |
186 | /* | |
d2cc32a6 MK |
187 | * Don't look for additional matches if this one does |
188 | * not have either the SO_REUSEPORT or SO_REUSEADDR | |
189 | * socket options set. This heuristic avoids searching | |
190 | * through all pcbs in the common case of a non-shared | |
191 | * port. It * assumes that an application will never | |
192 | * clear these options after setting them. | |
d6fa15c2 | 193 | */ |
d2cc32a6 | 194 | if ((last->so_options&(SO_REUSEPORT|SO_REUSEADDR) == 0)) |
d6fa15c2 KS |
195 | break; |
196 | } | |
197 | ||
198 | if (last == NULL) { | |
199 | /* | |
200 | * No matching pcb found; discard datagram. | |
201 | * (No need to send an ICMP Port Unreachable | |
202 | * for a broadcast or multicast datgram.) | |
203 | */ | |
69d96ae2 | 204 | udpstat.udps_noportbcast++; |
d6fa15c2 KS |
205 | goto bad; |
206 | } | |
207 | if (sbappendaddr(&last->so_rcv, (struct sockaddr *)&udp_in, | |
69d96ae2 AC |
208 | m, (struct mbuf *)0) == 0) { |
209 | udpstat.udps_fullsock++; | |
d6fa15c2 | 210 | goto bad; |
69d96ae2 | 211 | } |
d6fa15c2 KS |
212 | sorwakeup(last); |
213 | return; | |
214 | } | |
2b4b57cd | 215 | /* |
e199a8a5 | 216 | * Locate pcb for datagram. |
2b4b57cd | 217 | */ |
5921352b MK |
218 | inp = udp_last_inpcb; |
219 | if (inp->inp_lport != uh->uh_dport || | |
220 | inp->inp_fport != uh->uh_sport || | |
221 | inp->inp_faddr.s_addr != ip->ip_src.s_addr || | |
222 | inp->inp_laddr.s_addr != ip->ip_dst.s_addr) { | |
223 | inp = in_pcblookup(&udb, ip->ip_src, uh->uh_sport, | |
224 | ip->ip_dst, uh->uh_dport, INPLOOKUP_WILDCARD); | |
225 | if (inp) | |
226 | udp_last_inpcb = inp; | |
227 | udpstat.udpps_pcbcachemiss++; | |
228 | } | |
72e4f44e | 229 | if (inp == 0) { |
0dfbe263 | 230 | udpstat.udps_noport++; |
5927fb26 KM |
231 | if (m->m_flags & (M_BCAST | M_MCAST)) { |
232 | udpstat.udps_noportbcast++; | |
233 | goto bad; | |
234 | } | |
0dfbe263 | 235 | *ip = save_ip; |
9f5c260d | 236 | ip->ip_len += iphlen; |
d99f1c28 | 237 | icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0); |
72e4f44e SL |
238 | return; |
239 | } | |
2b4b57cd BJ |
240 | |
241 | /* | |
242 | * Construct sockaddr format source address. | |
243 | * Stuff source address and datagram in user buffer. | |
244 | */ | |
0dfbe263 MK |
245 | udp_in.sin_port = uh->uh_sport; |
246 | udp_in.sin_addr = ip->ip_src; | |
5921352b MK |
247 | if (inp->inp_flags & INP_CONTROLOPTS) { |
248 | struct mbuf **mp = &opts; | |
5921352b MK |
249 | |
250 | if (inp->inp_flags & INP_RECVDSTADDR) { | |
251 | *mp = udp_saveopt((caddr_t) &ip->ip_dst, | |
252 | sizeof(struct in_addr), IP_RECVDSTADDR); | |
253 | if (*mp) | |
254 | mp = &(*mp)->m_next; | |
255 | } | |
256 | #ifdef notyet | |
257 | /* options were tossed above */ | |
258 | if (inp->inp_flags & INP_RECVOPTS) { | |
259 | *mp = udp_saveopt((caddr_t) opts_deleted_above, | |
260 | sizeof(struct in_addr), IP_RECVOPTS); | |
261 | if (*mp) | |
262 | mp = &(*mp)->m_next; | |
263 | } | |
264 | /* ip_srcroute doesn't do what we want here, need to fix */ | |
265 | if (inp->inp_flags & INP_RECVRETOPTS) { | |
266 | *mp = udp_saveopt((caddr_t) ip_srcroute(), | |
267 | sizeof(struct in_addr), IP_RECVRETOPTS); | |
268 | if (*mp) | |
269 | mp = &(*mp)->m_next; | |
270 | } | |
271 | #endif | |
272 | } | |
0dfbe263 MK |
273 | iphlen += sizeof(struct udphdr); |
274 | m->m_len -= iphlen; | |
275 | m->m_pkthdr.len -= iphlen; | |
276 | m->m_data += iphlen; | |
ab85b059 | 277 | if (sbappendaddr(&inp->inp_socket->so_rcv, (struct sockaddr *)&udp_in, |
5921352b MK |
278 | m, opts) == 0) { |
279 | udpstat.udps_fullsock++; | |
2b4b57cd | 280 | goto bad; |
5921352b | 281 | } |
4e60622a | 282 | sorwakeup(inp->inp_socket); |
53a5409e | 283 | return; |
2b4b57cd | 284 | bad: |
53a5409e | 285 | m_freem(m); |
5921352b MK |
286 | if (opts) |
287 | m_freem(opts); | |
288 | } | |
289 | ||
290 | /* | |
291 | * Create a "control" mbuf containing the specified data | |
292 | * with the specified type for presentation with a datagram. | |
293 | */ | |
294 | struct mbuf * | |
295 | udp_saveopt(p, size, type) | |
296 | caddr_t p; | |
297 | register int size; | |
298 | int type; | |
299 | { | |
300 | register struct cmsghdr *cp; | |
301 | struct mbuf *m; | |
302 | ||
303 | if ((m = m_get(M_DONTWAIT, MT_CONTROL)) == NULL) | |
304 | return ((struct mbuf *) NULL); | |
305 | cp = (struct cmsghdr *) mtod(m, struct cmsghdr *); | |
0924b337 | 306 | bcopy(p, CMSG_DATA(cp), size); |
5921352b MK |
307 | size += sizeof(*cp); |
308 | m->m_len = size; | |
309 | cp->cmsg_len = size; | |
310 | cp->cmsg_level = IPPROTO_IP; | |
311 | cp->cmsg_type = type; | |
312 | return (m); | |
1bd53abe BJ |
313 | } |
314 | ||
41715710 MK |
315 | /* |
316 | * Notify a udp user of an asynchronous error; | |
317 | * just wake up so that he can collect error status. | |
318 | */ | |
c46785cb | 319 | static void |
5921352b | 320 | udp_notify(inp, errno) |
41715710 | 321 | register struct inpcb *inp; |
64f72726 | 322 | int errno; |
41715710 | 323 | { |
5921352b | 324 | inp->inp_socket->so_error = errno; |
41715710 MK |
325 | sorwakeup(inp->inp_socket); |
326 | sowwakeup(inp->inp_socket); | |
327 | } | |
328 | ||
c46785cb | 329 | void |
0dfbe263 | 330 | udp_ctlinput(cmd, sa, ip) |
39674d5f | 331 | int cmd; |
dcea2497 | 332 | struct sockaddr *sa; |
0dfbe263 | 333 | register struct ip *ip; |
39674d5f | 334 | { |
0dfbe263 MK |
335 | register struct udphdr *uh; |
336 | extern struct in_addr zeroin_addr; | |
39674d5f | 337 | extern u_char inetctlerrmap[]; |
39674d5f | 338 | |
69d96ae2 AC |
339 | if (!PRC_IS_REDIRECT(cmd) && |
340 | ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0)) | |
dcea2497 | 341 | return; |
0dfbe263 MK |
342 | if (ip) { |
343 | uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2)); | |
344 | in_pcbnotify(&udb, sa, uh->uh_dport, ip->ip_src, uh->uh_sport, | |
345 | cmd, udp_notify); | |
346 | } else | |
347 | in_pcbnotify(&udb, sa, 0, zeroin_addr, 0, cmd, udp_notify); | |
39674d5f SL |
348 | } |
349 | ||
c46785cb | 350 | int |
a942fe02 | 351 | udp_output(inp, m, addr, control) |
d55475b1 | 352 | register struct inpcb *inp; |
2b4b57cd | 353 | register struct mbuf *m; |
a942fe02 | 354 | struct mbuf *addr, *control; |
9d91b170 | 355 | { |
2b4b57cd | 356 | register struct udpiphdr *ui; |
9d91b170 | 357 | register int len = m->m_pkthdr.len; |
a942fe02 MK |
358 | struct in_addr laddr; |
359 | int s, error = 0; | |
2b4b57cd | 360 | |
a942fe02 MK |
361 | if (control) |
362 | m_freem(control); /* XXX */ | |
363 | ||
364 | if (addr) { | |
365 | laddr = inp->inp_laddr; | |
366 | if (inp->inp_faddr.s_addr != INADDR_ANY) { | |
367 | error = EISCONN; | |
368 | goto release; | |
369 | } | |
370 | /* | |
371 | * Must block input while temporarily connected. | |
372 | */ | |
373 | s = splnet(); | |
374 | error = in_pcbconnect(inp, addr); | |
375 | if (error) { | |
376 | splx(s); | |
377 | goto release; | |
378 | } | |
379 | } else { | |
380 | if (inp->inp_faddr.s_addr == INADDR_ANY) { | |
381 | error = ENOTCONN; | |
382 | goto release; | |
383 | } | |
384 | } | |
2b4b57cd BJ |
385 | /* |
386 | * Calculate data length and get a mbuf | |
4aed14e3 | 387 | * for UDP and IP headers. |
2b4b57cd | 388 | */ |
b2a072f3 KM |
389 | M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT); |
390 | if (m == 0) { | |
391 | error = ENOBUFS; | |
392 | goto release; | |
393 | } | |
2b4b57cd BJ |
394 | |
395 | /* | |
4aed14e3 | 396 | * Fill in mbuf with extended UDP header |
2b4b57cd BJ |
397 | * and addresses and length put into network format. |
398 | */ | |
2b4b57cd BJ |
399 | ui = mtod(m, struct udpiphdr *); |
400 | ui->ui_next = ui->ui_prev = 0; | |
401 | ui->ui_x1 = 0; | |
402 | ui->ui_pr = IPPROTO_UDP; | |
ee847abd | 403 | ui->ui_len = htons((u_short)len + sizeof (struct udphdr)); |
4e60622a BJ |
404 | ui->ui_src = inp->inp_laddr; |
405 | ui->ui_dst = inp->inp_faddr; | |
406 | ui->ui_sport = inp->inp_lport; | |
407 | ui->ui_dport = inp->inp_fport; | |
ee847abd | 408 | ui->ui_ulen = ui->ui_len; |
2b4b57cd BJ |
409 | |
410 | /* | |
411 | * Stuff checksum and output datagram. | |
412 | */ | |
413 | ui->ui_sum = 0; | |
dd8707ae MK |
414 | if (udpcksum) { |
415 | if ((ui->ui_sum = in_cksum(m, sizeof (struct udpiphdr) + len)) == 0) | |
890024da | 416 | ui->ui_sum = 0xffff; |
ee09448f | 417 | } |
4e60622a | 418 | ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len; |
5921352b MK |
419 | ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */ |
420 | ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ | |
0dfbe263 | 421 | udpstat.udps_opackets++; |
a942fe02 | 422 | error = ip_output(m, inp->inp_options, &inp->inp_route, |
69d96ae2 AC |
423 | inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST), |
424 | inp->inp_moptions); | |
a942fe02 MK |
425 | |
426 | if (addr) { | |
427 | in_pcbdisconnect(inp); | |
428 | inp->inp_laddr = laddr; | |
429 | splx(s); | |
430 | } | |
431 | return (error); | |
432 | ||
433 | release: | |
434 | m_freem(m); | |
435 | return (error); | |
1bd53abe BJ |
436 | } |
437 | ||
c9209cff KM |
438 | u_long udp_sendspace = 9216; /* really max datagram size */ |
439 | u_long udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in)); | |
440 | /* 40 1K datagrams */ | |
1d14d351 | 441 | |
a8d3bf7f | 442 | /*ARGSUSED*/ |
c46785cb | 443 | int |
a942fe02 | 444 | udp_usrreq(so, req, m, addr, control) |
53a5409e | 445 | struct socket *so; |
1bd53abe | 446 | int req; |
a942fe02 | 447 | struct mbuf *m, *addr, *control; |
1bd53abe | 448 | { |
53a5409e | 449 | struct inpcb *inp = sotoinpcb(so); |
8a2f82db | 450 | int error = 0; |
5921352b | 451 | int s; |
1bd53abe | 452 | |
1d14d351 | 453 | if (req == PRU_CONTROL) |
a942fe02 | 454 | return (in_control(so, (int)m, (caddr_t)addr, |
0dfbe263 | 455 | (struct ifnet *)control)); |
a3fa431a SL |
456 | if (inp == NULL && req != PRU_ATTACH) { |
457 | error = EINVAL; | |
458 | goto release; | |
459 | } | |
5921352b | 460 | /* |
a44aeee3 MK |
461 | * Note: need to block udp_input while changing |
462 | * the udp pcb queue and/or pcb addresses. | |
5921352b | 463 | */ |
1bd53abe BJ |
464 | switch (req) { |
465 | ||
466 | case PRU_ATTACH: | |
a3fa431a SL |
467 | if (inp != NULL) { |
468 | error = EINVAL; | |
469 | break; | |
470 | } | |
5921352b | 471 | s = splnet(); |
8075bb0e | 472 | error = in_pcballoc(so, &udb); |
5921352b | 473 | splx(s); |
8075bb0e BJ |
474 | if (error) |
475 | break; | |
1d14d351 | 476 | error = soreserve(so, udp_sendspace, udp_recvspace); |
8075bb0e BJ |
477 | if (error) |
478 | break; | |
0321539c | 479 | ((struct inpcb *) so->so_pcb)->inp_ip.ip_ttl = ip_defttl; |
53a5409e | 480 | break; |
1bd53abe BJ |
481 | |
482 | case PRU_DETACH: | |
a44aeee3 | 483 | udp_detach(inp); |
53a5409e | 484 | break; |
1bd53abe | 485 | |
8075bb0e | 486 | case PRU_BIND: |
a44aeee3 | 487 | s = splnet(); |
a942fe02 | 488 | error = in_pcbbind(inp, addr); |
a44aeee3 | 489 | splx(s); |
8075bb0e BJ |
490 | break; |
491 | ||
492 | case PRU_LISTEN: | |
493 | error = EOPNOTSUPP; | |
494 | break; | |
495 | ||
1bd53abe | 496 | case PRU_CONNECT: |
a3fa431a SL |
497 | if (inp->inp_faddr.s_addr != INADDR_ANY) { |
498 | error = EISCONN; | |
499 | break; | |
500 | } | |
a44aeee3 | 501 | s = splnet(); |
a942fe02 | 502 | error = in_pcbconnect(inp, addr); |
a44aeee3 | 503 | splx(s); |
8a2f82db SL |
504 | if (error == 0) |
505 | soisconnected(so); | |
1bd53abe BJ |
506 | break; |
507 | ||
4945768c SL |
508 | case PRU_CONNECT2: |
509 | error = EOPNOTSUPP; | |
510 | break; | |
511 | ||
2b4b57cd | 512 | case PRU_ACCEPT: |
a3fa431a SL |
513 | error = EOPNOTSUPP; |
514 | break; | |
2b4b57cd | 515 | |
53a5409e | 516 | case PRU_DISCONNECT: |
a3fa431a SL |
517 | if (inp->inp_faddr.s_addr == INADDR_ANY) { |
518 | error = ENOTCONN; | |
519 | break; | |
520 | } | |
a44aeee3 | 521 | s = splnet(); |
405c9168 | 522 | in_pcbdisconnect(inp); |
0dfbe263 | 523 | inp->inp_laddr.s_addr = INADDR_ANY; |
a44aeee3 | 524 | splx(s); |
f96a0781 | 525 | so->so_state &= ~SS_ISCONNECTED; /* XXX */ |
1bd53abe BJ |
526 | break; |
527 | ||
cdad2eb1 BJ |
528 | case PRU_SHUTDOWN: |
529 | socantsendmore(so); | |
530 | break; | |
531 | ||
a942fe02 | 532 | case PRU_SEND: |
5921352b | 533 | return (udp_output(inp, m, addr, control)); |
1bd53abe BJ |
534 | |
535 | case PRU_ABORT: | |
53a5409e | 536 | soisdisconnected(so); |
a44aeee3 | 537 | udp_detach(inp); |
1bd53abe BJ |
538 | break; |
539 | ||
126472ab | 540 | case PRU_SOCKADDR: |
a942fe02 | 541 | in_setsockaddr(inp, addr); |
126472ab SL |
542 | break; |
543 | ||
a7343092 | 544 | case PRU_PEERADDR: |
a942fe02 | 545 | in_setpeeraddr(inp, addr); |
a7343092 SL |
546 | break; |
547 | ||
74040e68 MK |
548 | case PRU_SENSE: |
549 | /* | |
550 | * stat: don't bother with a blocksize. | |
551 | */ | |
552 | return (0); | |
553 | ||
11d2a668 SL |
554 | case PRU_SENDOOB: |
555 | case PRU_FASTTIMO: | |
556 | case PRU_SLOWTIMO: | |
557 | case PRU_PROTORCV: | |
558 | case PRU_PROTOSEND: | |
559 | error = EOPNOTSUPP; | |
560 | break; | |
4945768c | 561 | |
5f55b8b5 MK |
562 | case PRU_RCVD: |
563 | case PRU_RCVOOB: | |
564 | return (EOPNOTSUPP); /* do not free mbuf's */ | |
565 | ||
4945768c SL |
566 | default: |
567 | panic("udp_usrreq"); | |
d52566dd | 568 | } |
5921352b | 569 | |
a3fa431a | 570 | release: |
a942fe02 MK |
571 | if (control) { |
572 | printf("udp control data unexpectedly retained\n"); | |
573 | m_freem(control); | |
574 | } | |
575 | if (m) | |
a3fa431a | 576 | m_freem(m); |
8a2f82db | 577 | return (error); |
d52566dd | 578 | } |
a44aeee3 | 579 | |
c46785cb | 580 | static void |
a44aeee3 MK |
581 | udp_detach(inp) |
582 | struct inpcb *inp; | |
583 | { | |
584 | int s = splnet(); | |
585 | ||
586 | if (inp == udp_last_inpcb) | |
587 | udp_last_inpcb = &udb; | |
588 | in_pcbdetach(inp); | |
589 | splx(s); | |
590 | } | |
5082da2b KM |
591 | |
592 | /* | |
593 | * Sysctl for udp variables. | |
594 | */ | |
595 | udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen) | |
596 | int *name; | |
597 | u_int namelen; | |
598 | void *oldp; | |
599 | size_t *oldlenp; | |
600 | void *newp; | |
601 | size_t newlen; | |
602 | { | |
67e8af50 | 603 | /* All sysctl names at this level are terminal. */ |
5082da2b KM |
604 | if (namelen != 1) |
605 | return (ENOTDIR); | |
606 | ||
607 | switch (name[0]) { | |
608 | case UDPCTL_CHECKSUM: | |
609 | return (sysctl_int(oldp, oldlenp, newp, newlen, &udpcksum)); | |
610 | default: | |
611 | return (ENOPROTOOPT); | |
612 | } | |
613 | /* NOTREACHED */ | |
614 | } |