Commit | Line | Data |
---|---|---|
8ae0e4b4 | 1 | /* |
5921352b | 2 | * Copyright (c) 1982, 1986, 1988, 1990 Regents of the University of California. |
2b6b6284 | 3 | * All rights reserved. |
8ae0e4b4 | 4 | * |
e5b84169 | 5 | * %sccs.include.redist.c% |
2b6b6284 | 6 | * |
c63cb169 | 7 | * @(#)udp_usrreq.c 7.28 (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 | |
5921352b MK |
31 | struct inpcb *udp_last_inpcb = &udb; |
32 | ||
2b4b57cd BJ |
33 | /* |
34 | * UDP protocol implementation. | |
35 | * Per RFC 768, August, 1980. | |
36 | */ | |
d52566dd BJ |
37 | udp_init() |
38 | { | |
eb44bfb2 | 39 | udb.inp_next = udb.inp_prev = &udb; |
d52566dd | 40 | } |
1bd53abe | 41 | |
c50542f3 | 42 | #ifndef COMPAT_42 |
dd8707ae | 43 | int udpcksum = 1; |
c50542f3 MK |
44 | #else |
45 | int udpcksum = 0; /* XXX */ | |
46 | #endif | |
0eda4f11 | 47 | int udp_ttl = UDP_TTL; |
c50542f3 | 48 | |
5328bc49 | 49 | struct sockaddr_in udp_in = { sizeof(udp_in), AF_INET }; |
eb44bfb2 | 50 | |
9d91b170 MK |
51 | udp_input(m, iphlen) |
52 | register struct mbuf *m; | |
53 | int iphlen; | |
1bd53abe | 54 | { |
0dfbe263 MK |
55 | register struct ip *ip; |
56 | register struct udphdr *uh; | |
53a5409e | 57 | register struct inpcb *inp; |
5921352b | 58 | struct mbuf *opts = 0; |
e199a8a5 | 59 | int len; |
0dfbe263 | 60 | struct ip save_ip; |
eb44bfb2 | 61 | |
5921352b | 62 | udpstat.udps_ipackets++; |
9f5c260d MK |
63 | |
64 | /* | |
65 | * Strip IP options, if any; should skip this, | |
66 | * make available to user, and use on returned packets, | |
67 | * but we don't yet have a way to check the checksum | |
68 | * with options still present. | |
69 | */ | |
70 | if (iphlen > sizeof (struct ip)) { | |
0dfbe263 | 71 | ip_stripoptions(m, (struct mbuf *)0); |
9f5c260d MK |
72 | iphlen = sizeof(struct ip); |
73 | } | |
74 | ||
2b4b57cd | 75 | /* |
4aed14e3 | 76 | * Get IP and UDP header together in first mbuf. |
2b4b57cd | 77 | */ |
0dfbe263 MK |
78 | ip = mtod(m, struct ip *); |
79 | if (m->m_len < iphlen + sizeof(struct udphdr)) { | |
80 | if ((m = m_pullup(m, iphlen + sizeof(struct udphdr))) == 0) { | |
7212ba67 MK |
81 | udpstat.udps_hdrops++; |
82 | return; | |
83 | } | |
0dfbe263 | 84 | ip = mtod(m, struct ip *); |
7212ba67 | 85 | } |
0dfbe263 | 86 | uh = (struct udphdr *)((caddr_t)ip + iphlen); |
2b4b57cd BJ |
87 | |
88 | /* | |
4aed14e3 BJ |
89 | * Make mbuf data length reflect UDP length. |
90 | * If not enough data to reflect UDP length, drop. | |
2b4b57cd | 91 | */ |
0dfbe263 MK |
92 | len = ntohs((u_short)uh->uh_ulen); |
93 | if (ip->ip_len != len) { | |
94 | if (len > ip->ip_len) { | |
2b4b57cd BJ |
95 | udpstat.udps_badlen++; |
96 | goto bad; | |
97 | } | |
0dfbe263 MK |
98 | m_adj(m, len - ip->ip_len); |
99 | /* ip->ip_len = len; */ | |
2b4b57cd | 100 | } |
dcea2497 | 101 | /* |
0dfbe263 MK |
102 | * Save a copy of the IP header in case we want restore it |
103 | * for sending an ICMP error message in response. | |
dcea2497 | 104 | */ |
0dfbe263 | 105 | save_ip = *ip; |
2b4b57cd BJ |
106 | |
107 | /* | |
4aed14e3 | 108 | * Checksum extended UDP header and data. |
2b4b57cd | 109 | */ |
0dfbe263 MK |
110 | if (udpcksum && uh->uh_sum) { |
111 | ((struct ipovly *)ip)->ih_next = 0; | |
112 | ((struct ipovly *)ip)->ih_prev = 0; | |
113 | ((struct ipovly *)ip)->ih_x1 = 0; | |
114 | ((struct ipovly *)ip)->ih_len = uh->uh_ulen; | |
115 | if (uh->uh_sum = in_cksum(m, len + sizeof (struct ip))) { | |
2b4b57cd | 116 | udpstat.udps_badsum++; |
eb44bfb2 BJ |
117 | m_freem(m); |
118 | return; | |
119 | } | |
120 | } | |
2b4b57cd | 121 | |
c63cb169 | 122 | if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) || |
d6fa15c2 KS |
123 | in_broadcast(ip->ip_dst)) { |
124 | struct socket *last; | |
125 | /* | |
126 | * Deliver a multicast or broadcast datagram to *all* sockets | |
127 | * for which the local and remote addresses and ports match | |
128 | * those of the incoming datagram. This allows more than | |
129 | * one process to receive multi/broadcasts on the same port. | |
130 | * (This really ought to be done for unicast datagrams as | |
131 | * well, but that would cause problems with existing | |
132 | * applications that open both address-specific sockets and | |
133 | * a wildcard socket listening to the same port -- they would | |
134 | * end up receiving duplicates of every unicast datagram. | |
135 | * Those applications open the multiple sockets to overcome an | |
136 | * inadequacy of the UDP socket interface, but for backwards | |
137 | * compatibility we avoid the problem here rather than | |
69d96ae2 | 138 | * fixing the interface. Maybe 4.5BSD will remedy this?) |
d6fa15c2 KS |
139 | */ |
140 | ||
141 | /* | |
142 | * Construct sockaddr format source address. | |
143 | */ | |
144 | udp_in.sin_port = uh->uh_sport; | |
145 | udp_in.sin_addr = ip->ip_src; | |
146 | m->m_len -= sizeof (struct udpiphdr); | |
147 | m->m_data += sizeof (struct udpiphdr); | |
148 | /* | |
149 | * Locate pcb(s) for datagram. | |
150 | * (Algorithm copied from raw_intr().) | |
151 | */ | |
152 | last = NULL; | |
153 | for (inp = udb.inp_next; inp != &udb; inp = inp->inp_next) { | |
154 | if (inp->inp_lport != uh->uh_dport) | |
155 | continue; | |
156 | if (inp->inp_laddr.s_addr != INADDR_ANY) { | |
157 | if (inp->inp_laddr.s_addr != | |
158 | ip->ip_dst.s_addr) | |
159 | continue; | |
160 | } | |
161 | if (inp->inp_faddr.s_addr != INADDR_ANY) { | |
162 | if (inp->inp_faddr.s_addr != | |
163 | ip->ip_src.s_addr || | |
164 | inp->inp_fport != uh->uh_sport) | |
165 | continue; | |
166 | } | |
167 | ||
168 | if (last != NULL) { | |
169 | struct mbuf *n; | |
170 | ||
171 | if ((n = m_copy(m, 0, M_COPYALL)) != NULL) { | |
172 | if (sbappendaddr(&last->so_rcv, | |
173 | (struct sockaddr *)&udp_in, | |
69d96ae2 | 174 | n, (struct mbuf *)0) == 0) { |
d6fa15c2 | 175 | m_freem(n); |
69d96ae2 AC |
176 | udpstat.udps_fullsock++; |
177 | } else | |
d6fa15c2 KS |
178 | sorwakeup(last); |
179 | } | |
180 | } | |
181 | last = inp->inp_socket; | |
182 | /* | |
183 | * Don't look for additional matches if this one | |
f1242a73 | 184 | * does not have the SO_REUSEPORT socket option set. |
d6fa15c2 KS |
185 | * This heuristic avoids searching through all pcbs |
186 | * in the common case of a non-shared port. It | |
187 | * assumes that an application will never clear | |
f1242a73 | 188 | * the SO_REUSEPORT option after setting it. |
d6fa15c2 | 189 | */ |
f1242a73 | 190 | if ((last->so_options & SO_REUSEPORT) == 0) |
d6fa15c2 KS |
191 | break; |
192 | } | |
193 | ||
194 | if (last == NULL) { | |
195 | /* | |
196 | * No matching pcb found; discard datagram. | |
197 | * (No need to send an ICMP Port Unreachable | |
198 | * for a broadcast or multicast datgram.) | |
199 | */ | |
69d96ae2 | 200 | udpstat.udps_noportbcast++; |
d6fa15c2 KS |
201 | goto bad; |
202 | } | |
203 | if (sbappendaddr(&last->so_rcv, (struct sockaddr *)&udp_in, | |
69d96ae2 AC |
204 | m, (struct mbuf *)0) == 0) { |
205 | udpstat.udps_fullsock++; | |
d6fa15c2 | 206 | goto bad; |
69d96ae2 | 207 | } |
d6fa15c2 KS |
208 | sorwakeup(last); |
209 | return; | |
210 | } | |
2b4b57cd | 211 | /* |
e199a8a5 | 212 | * Locate pcb for datagram. |
2b4b57cd | 213 | */ |
5921352b MK |
214 | inp = udp_last_inpcb; |
215 | if (inp->inp_lport != uh->uh_dport || | |
216 | inp->inp_fport != uh->uh_sport || | |
217 | inp->inp_faddr.s_addr != ip->ip_src.s_addr || | |
218 | inp->inp_laddr.s_addr != ip->ip_dst.s_addr) { | |
219 | inp = in_pcblookup(&udb, ip->ip_src, uh->uh_sport, | |
220 | ip->ip_dst, uh->uh_dport, INPLOOKUP_WILDCARD); | |
221 | if (inp) | |
222 | udp_last_inpcb = inp; | |
223 | udpstat.udpps_pcbcachemiss++; | |
224 | } | |
72e4f44e | 225 | if (inp == 0) { |
0dfbe263 | 226 | udpstat.udps_noport++; |
0dfbe263 | 227 | *ip = save_ip; |
9f5c260d | 228 | ip->ip_len += iphlen; |
9d91b170 | 229 | icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT); |
72e4f44e SL |
230 | return; |
231 | } | |
2b4b57cd BJ |
232 | |
233 | /* | |
234 | * Construct sockaddr format source address. | |
235 | * Stuff source address and datagram in user buffer. | |
236 | */ | |
0dfbe263 MK |
237 | udp_in.sin_port = uh->uh_sport; |
238 | udp_in.sin_addr = ip->ip_src; | |
5921352b MK |
239 | if (inp->inp_flags & INP_CONTROLOPTS) { |
240 | struct mbuf **mp = &opts; | |
241 | struct mbuf *udp_saveopt(); | |
242 | ||
243 | if (inp->inp_flags & INP_RECVDSTADDR) { | |
244 | *mp = udp_saveopt((caddr_t) &ip->ip_dst, | |
245 | sizeof(struct in_addr), IP_RECVDSTADDR); | |
246 | if (*mp) | |
247 | mp = &(*mp)->m_next; | |
248 | } | |
249 | #ifdef notyet | |
250 | /* options were tossed above */ | |
251 | if (inp->inp_flags & INP_RECVOPTS) { | |
252 | *mp = udp_saveopt((caddr_t) opts_deleted_above, | |
253 | sizeof(struct in_addr), IP_RECVOPTS); | |
254 | if (*mp) | |
255 | mp = &(*mp)->m_next; | |
256 | } | |
257 | /* ip_srcroute doesn't do what we want here, need to fix */ | |
258 | if (inp->inp_flags & INP_RECVRETOPTS) { | |
259 | *mp = udp_saveopt((caddr_t) ip_srcroute(), | |
260 | sizeof(struct in_addr), IP_RECVRETOPTS); | |
261 | if (*mp) | |
262 | mp = &(*mp)->m_next; | |
263 | } | |
264 | #endif | |
265 | } | |
0dfbe263 MK |
266 | iphlen += sizeof(struct udphdr); |
267 | m->m_len -= iphlen; | |
268 | m->m_pkthdr.len -= iphlen; | |
269 | m->m_data += iphlen; | |
ab85b059 | 270 | if (sbappendaddr(&inp->inp_socket->so_rcv, (struct sockaddr *)&udp_in, |
5921352b MK |
271 | m, opts) == 0) { |
272 | udpstat.udps_fullsock++; | |
2b4b57cd | 273 | goto bad; |
5921352b | 274 | } |
4e60622a | 275 | sorwakeup(inp->inp_socket); |
53a5409e | 276 | return; |
2b4b57cd | 277 | bad: |
53a5409e | 278 | m_freem(m); |
5921352b MK |
279 | if (opts) |
280 | m_freem(opts); | |
281 | } | |
282 | ||
283 | /* | |
284 | * Create a "control" mbuf containing the specified data | |
285 | * with the specified type for presentation with a datagram. | |
286 | */ | |
287 | struct mbuf * | |
288 | udp_saveopt(p, size, type) | |
289 | caddr_t p; | |
290 | register int size; | |
291 | int type; | |
292 | { | |
293 | register struct cmsghdr *cp; | |
294 | struct mbuf *m; | |
295 | ||
296 | if ((m = m_get(M_DONTWAIT, MT_CONTROL)) == NULL) | |
297 | return ((struct mbuf *) NULL); | |
298 | cp = (struct cmsghdr *) mtod(m, struct cmsghdr *); | |
ce0c688b | 299 | bcopy(p, (caddr_t)(cp + 1), size); |
5921352b MK |
300 | size += sizeof(*cp); |
301 | m->m_len = size; | |
302 | cp->cmsg_len = size; | |
303 | cp->cmsg_level = IPPROTO_IP; | |
304 | cp->cmsg_type = type; | |
305 | return (m); | |
1bd53abe BJ |
306 | } |
307 | ||
41715710 MK |
308 | /* |
309 | * Notify a udp user of an asynchronous error; | |
310 | * just wake up so that he can collect error status. | |
311 | */ | |
5921352b | 312 | udp_notify(inp, errno) |
41715710 | 313 | register struct inpcb *inp; |
64f72726 | 314 | int errno; |
41715710 | 315 | { |
5921352b | 316 | inp->inp_socket->so_error = errno; |
41715710 MK |
317 | sorwakeup(inp->inp_socket); |
318 | sowwakeup(inp->inp_socket); | |
319 | } | |
320 | ||
0dfbe263 | 321 | udp_ctlinput(cmd, sa, ip) |
39674d5f | 322 | int cmd; |
dcea2497 | 323 | struct sockaddr *sa; |
0dfbe263 | 324 | register struct ip *ip; |
39674d5f | 325 | { |
0dfbe263 MK |
326 | register struct udphdr *uh; |
327 | extern struct in_addr zeroin_addr; | |
39674d5f | 328 | extern u_char inetctlerrmap[]; |
39674d5f | 329 | |
69d96ae2 AC |
330 | if (!PRC_IS_REDIRECT(cmd) && |
331 | ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0)) | |
dcea2497 | 332 | return; |
0dfbe263 MK |
333 | if (ip) { |
334 | uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2)); | |
335 | in_pcbnotify(&udb, sa, uh->uh_dport, ip->ip_src, uh->uh_sport, | |
336 | cmd, udp_notify); | |
337 | } else | |
338 | in_pcbnotify(&udb, sa, 0, zeroin_addr, 0, cmd, udp_notify); | |
39674d5f SL |
339 | } |
340 | ||
a942fe02 | 341 | udp_output(inp, m, addr, control) |
d55475b1 | 342 | register struct inpcb *inp; |
2b4b57cd | 343 | register struct mbuf *m; |
a942fe02 | 344 | struct mbuf *addr, *control; |
9d91b170 | 345 | { |
2b4b57cd | 346 | register struct udpiphdr *ui; |
9d91b170 | 347 | register int len = m->m_pkthdr.len; |
a942fe02 MK |
348 | struct in_addr laddr; |
349 | int s, error = 0; | |
2b4b57cd | 350 | |
a942fe02 MK |
351 | if (control) |
352 | m_freem(control); /* XXX */ | |
353 | ||
354 | if (addr) { | |
355 | laddr = inp->inp_laddr; | |
356 | if (inp->inp_faddr.s_addr != INADDR_ANY) { | |
357 | error = EISCONN; | |
358 | goto release; | |
359 | } | |
360 | /* | |
361 | * Must block input while temporarily connected. | |
362 | */ | |
363 | s = splnet(); | |
364 | error = in_pcbconnect(inp, addr); | |
365 | if (error) { | |
366 | splx(s); | |
367 | goto release; | |
368 | } | |
369 | } else { | |
370 | if (inp->inp_faddr.s_addr == INADDR_ANY) { | |
371 | error = ENOTCONN; | |
372 | goto release; | |
373 | } | |
374 | } | |
2b4b57cd BJ |
375 | /* |
376 | * Calculate data length and get a mbuf | |
4aed14e3 | 377 | * for UDP and IP headers. |
2b4b57cd | 378 | */ |
b2a072f3 KM |
379 | M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT); |
380 | if (m == 0) { | |
381 | error = ENOBUFS; | |
382 | goto release; | |
383 | } | |
2b4b57cd BJ |
384 | |
385 | /* | |
4aed14e3 | 386 | * Fill in mbuf with extended UDP header |
2b4b57cd BJ |
387 | * and addresses and length put into network format. |
388 | */ | |
2b4b57cd BJ |
389 | ui = mtod(m, struct udpiphdr *); |
390 | ui->ui_next = ui->ui_prev = 0; | |
391 | ui->ui_x1 = 0; | |
392 | ui->ui_pr = IPPROTO_UDP; | |
ee847abd | 393 | ui->ui_len = htons((u_short)len + sizeof (struct udphdr)); |
4e60622a BJ |
394 | ui->ui_src = inp->inp_laddr; |
395 | ui->ui_dst = inp->inp_faddr; | |
396 | ui->ui_sport = inp->inp_lport; | |
397 | ui->ui_dport = inp->inp_fport; | |
ee847abd | 398 | ui->ui_ulen = ui->ui_len; |
2b4b57cd BJ |
399 | |
400 | /* | |
401 | * Stuff checksum and output datagram. | |
402 | */ | |
403 | ui->ui_sum = 0; | |
dd8707ae MK |
404 | if (udpcksum) { |
405 | if ((ui->ui_sum = in_cksum(m, sizeof (struct udpiphdr) + len)) == 0) | |
890024da | 406 | ui->ui_sum = 0xffff; |
ee09448f | 407 | } |
4e60622a | 408 | ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len; |
5921352b MK |
409 | ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */ |
410 | ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */ | |
0dfbe263 | 411 | udpstat.udps_opackets++; |
a942fe02 | 412 | error = ip_output(m, inp->inp_options, &inp->inp_route, |
69d96ae2 AC |
413 | inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST), |
414 | inp->inp_moptions); | |
a942fe02 MK |
415 | |
416 | if (addr) { | |
417 | in_pcbdisconnect(inp); | |
418 | inp->inp_laddr = laddr; | |
419 | splx(s); | |
420 | } | |
421 | return (error); | |
422 | ||
423 | release: | |
424 | m_freem(m); | |
425 | return (error); | |
1bd53abe BJ |
426 | } |
427 | ||
c9209cff KM |
428 | u_long udp_sendspace = 9216; /* really max datagram size */ |
429 | u_long udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in)); | |
430 | /* 40 1K datagrams */ | |
1d14d351 | 431 | |
a8d3bf7f | 432 | /*ARGSUSED*/ |
a942fe02 | 433 | udp_usrreq(so, req, m, addr, control) |
53a5409e | 434 | struct socket *so; |
1bd53abe | 435 | int req; |
a942fe02 | 436 | struct mbuf *m, *addr, *control; |
1bd53abe | 437 | { |
53a5409e | 438 | struct inpcb *inp = sotoinpcb(so); |
8a2f82db | 439 | int error = 0; |
5921352b | 440 | int s; |
1bd53abe | 441 | |
1d14d351 | 442 | if (req == PRU_CONTROL) |
a942fe02 | 443 | return (in_control(so, (int)m, (caddr_t)addr, |
0dfbe263 | 444 | (struct ifnet *)control)); |
a3fa431a SL |
445 | if (inp == NULL && req != PRU_ATTACH) { |
446 | error = EINVAL; | |
447 | goto release; | |
448 | } | |
5921352b | 449 | /* |
a44aeee3 MK |
450 | * Note: need to block udp_input while changing |
451 | * the udp pcb queue and/or pcb addresses. | |
5921352b | 452 | */ |
1bd53abe BJ |
453 | switch (req) { |
454 | ||
455 | case PRU_ATTACH: | |
a3fa431a SL |
456 | if (inp != NULL) { |
457 | error = EINVAL; | |
458 | break; | |
459 | } | |
5921352b | 460 | s = splnet(); |
8075bb0e | 461 | error = in_pcballoc(so, &udb); |
5921352b | 462 | splx(s); |
8075bb0e BJ |
463 | if (error) |
464 | break; | |
1d14d351 | 465 | error = soreserve(so, udp_sendspace, udp_recvspace); |
8075bb0e BJ |
466 | if (error) |
467 | break; | |
5921352b | 468 | ((struct inpcb *) so->so_pcb)->inp_ip.ip_ttl = udp_ttl; |
53a5409e | 469 | break; |
1bd53abe BJ |
470 | |
471 | case PRU_DETACH: | |
a44aeee3 | 472 | udp_detach(inp); |
53a5409e | 473 | break; |
1bd53abe | 474 | |
8075bb0e | 475 | case PRU_BIND: |
a44aeee3 | 476 | s = splnet(); |
a942fe02 | 477 | error = in_pcbbind(inp, addr); |
a44aeee3 | 478 | splx(s); |
8075bb0e BJ |
479 | break; |
480 | ||
481 | case PRU_LISTEN: | |
482 | error = EOPNOTSUPP; | |
483 | break; | |
484 | ||
1bd53abe | 485 | case PRU_CONNECT: |
a3fa431a SL |
486 | if (inp->inp_faddr.s_addr != INADDR_ANY) { |
487 | error = EISCONN; | |
488 | break; | |
489 | } | |
a44aeee3 | 490 | s = splnet(); |
a942fe02 | 491 | error = in_pcbconnect(inp, addr); |
a44aeee3 | 492 | splx(s); |
8a2f82db SL |
493 | if (error == 0) |
494 | soisconnected(so); | |
1bd53abe BJ |
495 | break; |
496 | ||
4945768c SL |
497 | case PRU_CONNECT2: |
498 | error = EOPNOTSUPP; | |
499 | break; | |
500 | ||
2b4b57cd | 501 | case PRU_ACCEPT: |
a3fa431a SL |
502 | error = EOPNOTSUPP; |
503 | break; | |
2b4b57cd | 504 | |
53a5409e | 505 | case PRU_DISCONNECT: |
a3fa431a SL |
506 | if (inp->inp_faddr.s_addr == INADDR_ANY) { |
507 | error = ENOTCONN; | |
508 | break; | |
509 | } | |
a44aeee3 | 510 | s = splnet(); |
405c9168 | 511 | in_pcbdisconnect(inp); |
0dfbe263 | 512 | inp->inp_laddr.s_addr = INADDR_ANY; |
a44aeee3 | 513 | splx(s); |
f96a0781 | 514 | so->so_state &= ~SS_ISCONNECTED; /* XXX */ |
1bd53abe BJ |
515 | break; |
516 | ||
cdad2eb1 BJ |
517 | case PRU_SHUTDOWN: |
518 | socantsendmore(so); | |
519 | break; | |
520 | ||
a942fe02 | 521 | case PRU_SEND: |
5921352b | 522 | return (udp_output(inp, m, addr, control)); |
1bd53abe BJ |
523 | |
524 | case PRU_ABORT: | |
53a5409e | 525 | soisdisconnected(so); |
a44aeee3 | 526 | udp_detach(inp); |
1bd53abe BJ |
527 | break; |
528 | ||
126472ab | 529 | case PRU_SOCKADDR: |
a942fe02 | 530 | in_setsockaddr(inp, addr); |
126472ab SL |
531 | break; |
532 | ||
a7343092 | 533 | case PRU_PEERADDR: |
a942fe02 | 534 | in_setpeeraddr(inp, addr); |
a7343092 SL |
535 | break; |
536 | ||
74040e68 MK |
537 | case PRU_SENSE: |
538 | /* | |
539 | * stat: don't bother with a blocksize. | |
540 | */ | |
541 | return (0); | |
542 | ||
11d2a668 SL |
543 | case PRU_SENDOOB: |
544 | case PRU_FASTTIMO: | |
545 | case PRU_SLOWTIMO: | |
546 | case PRU_PROTORCV: | |
547 | case PRU_PROTOSEND: | |
548 | error = EOPNOTSUPP; | |
549 | break; | |
4945768c | 550 | |
5f55b8b5 MK |
551 | case PRU_RCVD: |
552 | case PRU_RCVOOB: | |
553 | return (EOPNOTSUPP); /* do not free mbuf's */ | |
554 | ||
4945768c SL |
555 | default: |
556 | panic("udp_usrreq"); | |
d52566dd | 557 | } |
5921352b | 558 | |
a3fa431a | 559 | release: |
a942fe02 MK |
560 | if (control) { |
561 | printf("udp control data unexpectedly retained\n"); | |
562 | m_freem(control); | |
563 | } | |
564 | if (m) | |
a3fa431a | 565 | m_freem(m); |
8a2f82db | 566 | return (error); |
d52566dd | 567 | } |
a44aeee3 MK |
568 | |
569 | udp_detach(inp) | |
570 | struct inpcb *inp; | |
571 | { | |
572 | int s = splnet(); | |
573 | ||
574 | if (inp == udp_last_inpcb) | |
575 | udp_last_inpcb = &udb; | |
576 | in_pcbdetach(inp); | |
577 | splx(s); | |
578 | } |