Commit | Line | Data |
---|---|---|
cb1c44c2 | 1 | /* |
1810611d | 2 | * Copyright (c) 1980, 1986 Regents of the University of California. |
5b519e94 | 3 | * All rights reserved. |
cb1c44c2 | 4 | * |
5b519e94 KB |
5 | * Redistribution and use in source and binary forms are permitted |
6 | * provided that this notice is preserved and that due credit is given | |
7 | * to the University of California at Berkeley. The name of the University | |
8 | * may not be used to endorse or promote products derived from this | |
9 | * software without specific prior written permission. This software | |
10 | * is provided ``as is'' without express or implied warranty. | |
11 | * | |
12 | * @(#)raw_usrreq.c 7.3 (Berkeley) %G% | |
cb1c44c2 | 13 | */ |
8df9431e | 14 | |
a0369dcf JB |
15 | #include "param.h" |
16 | #include "mbuf.h" | |
17 | #include "domain.h" | |
18 | #include "protosw.h" | |
19 | #include "socket.h" | |
20 | #include "socketvar.h" | |
21 | #include "errno.h" | |
f4d55810 | 22 | |
a0369dcf JB |
23 | #include "if.h" |
24 | #include "route.h" | |
25 | #include "netisr.h" | |
26 | #include "raw_cb.h" | |
f4d55810 | 27 | |
2e62d00d | 28 | #include "../machine/mtpr.h" |
94a62155 BJ |
29 | |
30 | /* | |
31 | * Initialize raw connection block q. | |
1e977657 | 32 | */ |
94a62155 BJ |
33 | raw_init() |
34 | { | |
1e977657 | 35 | |
94a62155 | 36 | rawcb.rcb_next = rawcb.rcb_prev = &rawcb; |
1e977657 | 37 | rawintrq.ifq_maxlen = IFQ_MAXLEN; |
94a62155 | 38 | } |
8df9431e BJ |
39 | |
40 | /* | |
41 | * Raw protocol interface. | |
42 | */ | |
02122dcc | 43 | raw_input(m0, proto, src, dst) |
94a62155 | 44 | struct mbuf *m0; |
126472ab | 45 | struct sockproto *proto; |
02122dcc | 46 | struct sockaddr *src, *dst; |
8df9431e | 47 | { |
94a62155 BJ |
48 | register struct mbuf *m; |
49 | struct raw_header *rh; | |
8df9431e BJ |
50 | int s; |
51 | ||
94a62155 BJ |
52 | /* |
53 | * Rip off an mbuf for a generic header. | |
54 | */ | |
cce93e4b | 55 | m = m_get(M_DONTWAIT, MT_HEADER); |
94a62155 BJ |
56 | if (m == 0) { |
57 | m_freem(m0); | |
58 | return; | |
59 | } | |
60 | m->m_next = m0; | |
94a62155 BJ |
61 | m->m_len = sizeof(struct raw_header); |
62 | rh = mtod(m, struct raw_header *); | |
126472ab SL |
63 | rh->raw_dst = *dst; |
64 | rh->raw_src = *src; | |
65 | rh->raw_proto = *proto; | |
94a62155 BJ |
66 | |
67 | /* | |
68 | * Header now contains enough info to decide | |
69 | * which socket to place packet in (if any). | |
70 | * Queue it up for the raw protocol process | |
71 | * running at software interrupt level. | |
72 | */ | |
8df9431e | 73 | s = splimp(); |
1e977657 BJ |
74 | if (IF_QFULL(&rawintrq)) |
75 | m_freem(m); | |
76 | else | |
77 | IF_ENQUEUE(&rawintrq, m); | |
8df9431e | 78 | splx(s); |
9c8692e9 | 79 | schednetisr(NETISR_RAW); |
8df9431e BJ |
80 | } |
81 | ||
94a62155 BJ |
82 | /* |
83 | * Raw protocol input routine. Process packets entered | |
84 | * into the queue at interrupt time. Find the socket | |
85 | * associated with the packet(s) and move them over. If | |
86 | * nothing exists for this packet, drop it. | |
87 | */ | |
8df9431e BJ |
88 | rawintr() |
89 | { | |
90 | int s; | |
91 | struct mbuf *m; | |
94a62155 | 92 | register struct rawcb *rp; |
02122dcc | 93 | register struct raw_header *rh; |
94a62155 | 94 | struct socket *last; |
8df9431e | 95 | |
8df9431e BJ |
96 | next: |
97 | s = splimp(); | |
8df9431e BJ |
98 | IF_DEQUEUE(&rawintrq, m); |
99 | splx(s); | |
100 | if (m == 0) | |
101 | return; | |
126472ab | 102 | rh = mtod(m, struct raw_header *); |
94a62155 BJ |
103 | last = 0; |
104 | for (rp = rawcb.rcb_next; rp != &rawcb; rp = rp->rcb_next) { | |
829f867e | 105 | if (rp->rcb_proto.sp_family != rh->raw_proto.sp_family) |
94a62155 | 106 | continue; |
829f867e MK |
107 | if (rp->rcb_proto.sp_protocol && |
108 | rp->rcb_proto.sp_protocol != rh->raw_proto.sp_protocol) | |
126472ab | 109 | continue; |
94a62155 BJ |
110 | /* |
111 | * We assume the lower level routines have | |
112 | * placed the address in a canonical format | |
126472ab | 113 | * suitable for a structure comparison. |
94a62155 | 114 | */ |
02122dcc SL |
115 | #define equal(a1, a2) \ |
116 | (bcmp((caddr_t)&(a1), (caddr_t)&(a2), sizeof (struct sockaddr)) == 0) | |
126472ab | 117 | if ((rp->rcb_flags & RAW_LADDR) && |
02122dcc | 118 | !equal(rp->rcb_laddr, rh->raw_dst)) |
126472ab SL |
119 | continue; |
120 | if ((rp->rcb_flags & RAW_FADDR) && | |
02122dcc | 121 | !equal(rp->rcb_faddr, rh->raw_src)) |
94a62155 | 122 | continue; |
94a62155 BJ |
123 | if (last) { |
124 | struct mbuf *n; | |
fa1454d3 MK |
125 | if (n = m_copy(m->m_next, 0, (int)M_COPYALL)) { |
126 | if (sbappendaddr(&last->so_rcv, &rh->raw_src, | |
127 | n, (struct mbuf *)0) == 0) | |
128 | /* should notify about lost packet */ | |
129 | m_freem(n); | |
130 | else | |
131 | sorwakeup(last); | |
faad37c0 | 132 | } |
94a62155 | 133 | } |
126472ab | 134 | last = rp->rcb_socket; |
94a62155 | 135 | } |
72e4f44e | 136 | if (last) { |
9e9695c7 | 137 | if (sbappendaddr(&last->so_rcv, &rh->raw_src, |
fa1454d3 MK |
138 | m->m_next, (struct mbuf *)0) == 0) |
139 | m_freem(m->m_next); | |
140 | else | |
141 | sorwakeup(last); | |
142 | (void) m_free(m); /* header */ | |
143 | } else | |
144 | m_freem(m); | |
8df9431e BJ |
145 | goto next; |
146 | } | |
147 | ||
a1edc12b | 148 | /*ARGSUSED*/ |
72e4f44e SL |
149 | raw_ctlinput(cmd, arg) |
150 | int cmd; | |
8011f5df | 151 | struct sockaddr *arg; |
72e4f44e | 152 | { |
39674d5f SL |
153 | |
154 | if (cmd < 0 || cmd > PRC_NCMDS) | |
155 | return; | |
a1edc12b | 156 | /* INCOMPLETE */ |
72e4f44e SL |
157 | } |
158 | ||
8df9431e | 159 | /*ARGSUSED*/ |
9e9695c7 | 160 | raw_usrreq(so, req, m, nam, rights) |
8df9431e BJ |
161 | struct socket *so; |
162 | int req; | |
9e9695c7 | 163 | struct mbuf *m, *nam, *rights; |
8df9431e | 164 | { |
94a62155 | 165 | register struct rawcb *rp = sotorawcb(so); |
9e9695c7 | 166 | register int error = 0; |
94a62155 | 167 | |
6624ec0b MK |
168 | if (req == PRU_CONTROL) |
169 | return (EOPNOTSUPP); | |
9e9695c7 SL |
170 | if (rights && rights->m_len) { |
171 | error = EOPNOTSUPP; | |
172 | goto release; | |
173 | } | |
174 | if (rp == 0 && req != PRU_ATTACH) { | |
175 | error = EINVAL; | |
176 | goto release; | |
177 | } | |
94a62155 BJ |
178 | switch (req) { |
179 | ||
180 | /* | |
181 | * Allocate a raw control block and fill in the | |
182 | * necessary info to allow packets to be routed to | |
183 | * the appropriate raw interface routine. | |
184 | */ | |
185 | case PRU_ATTACH: | |
9e9695c7 SL |
186 | if ((so->so_state & SS_PRIV) == 0) { |
187 | error = EACCES; | |
4945768c | 188 | break; |
9e9695c7 SL |
189 | } |
190 | if (rp) { | |
191 | error = EINVAL; | |
4945768c | 192 | break; |
9e9695c7 | 193 | } |
829f867e | 194 | error = raw_attach(so, (int)nam); |
94a62155 BJ |
195 | break; |
196 | ||
197 | /* | |
198 | * Destroy state just before socket deallocation. | |
199 | * Flush data or not depending on the options. | |
200 | */ | |
201 | case PRU_DETACH: | |
9e9695c7 SL |
202 | if (rp == 0) { |
203 | error = ENOTCONN; | |
4945768c | 204 | break; |
9e9695c7 | 205 | } |
94a62155 BJ |
206 | raw_detach(rp); |
207 | break; | |
208 | ||
209 | /* | |
210 | * If a socket isn't bound to a single address, | |
211 | * the raw input routine will hand it anything | |
212 | * within that protocol family (assuming there's | |
213 | * nothing else around it should go to). | |
214 | */ | |
215 | case PRU_CONNECT: | |
9e9695c7 SL |
216 | if (rp->rcb_flags & RAW_FADDR) { |
217 | error = EISCONN; | |
4945768c | 218 | break; |
9e9695c7 | 219 | } |
14fa60f2 | 220 | raw_connaddr(rp, nam); |
94a62155 BJ |
221 | soisconnected(so); |
222 | break; | |
223 | ||
4945768c SL |
224 | case PRU_CONNECT2: |
225 | error = EOPNOTSUPP; | |
226 | goto release; | |
227 | ||
9e9695c7 SL |
228 | case PRU_BIND: |
229 | if (rp->rcb_flags & RAW_LADDR) { | |
230 | error = EINVAL; /* XXX */ | |
4945768c | 231 | break; |
9e9695c7 SL |
232 | } |
233 | error = raw_bind(so, nam); | |
234 | break; | |
235 | ||
94a62155 | 236 | case PRU_DISCONNECT: |
9e9695c7 SL |
237 | if ((rp->rcb_flags & RAW_FADDR) == 0) { |
238 | error = ENOTCONN; | |
4945768c | 239 | break; |
9e9695c7 | 240 | } |
94a62155 BJ |
241 | raw_disconnect(rp); |
242 | soisdisconnected(so); | |
243 | break; | |
244 | ||
245 | /* | |
246 | * Mark the connection as being incapable of further input. | |
247 | */ | |
248 | case PRU_SHUTDOWN: | |
249 | socantsendmore(so); | |
250 | break; | |
251 | ||
252 | /* | |
253 | * Ship a packet out. The appropriate raw output | |
254 | * routine handles any massaging necessary. | |
255 | */ | |
256 | case PRU_SEND: | |
14fa60f2 | 257 | if (nam) { |
9e9695c7 SL |
258 | if (rp->rcb_flags & RAW_FADDR) { |
259 | error = EISCONN; | |
4945768c | 260 | break; |
9e9695c7 | 261 | } |
14fa60f2 | 262 | raw_connaddr(rp, nam); |
9e9695c7 SL |
263 | } else if ((rp->rcb_flags & RAW_FADDR) == 0) { |
264 | error = ENOTCONN; | |
4945768c | 265 | break; |
9e9695c7 | 266 | } |
8a2f82db | 267 | error = (*so->so_proto->pr_output)(m, so); |
9e9695c7 | 268 | m = NULL; |
14fa60f2 | 269 | if (nam) |
126472ab | 270 | rp->rcb_flags &= ~RAW_FADDR; |
94a62155 BJ |
271 | break; |
272 | ||
273 | case PRU_ABORT: | |
274 | raw_disconnect(rp); | |
275 | sofree(so); | |
276 | soisdisconnected(so); | |
277 | break; | |
278 | ||
0f12c0aa MK |
279 | case PRU_SENSE: |
280 | /* | |
281 | * stat: don't bother with a blocksize. | |
282 | */ | |
283 | return (0); | |
284 | ||
94a62155 BJ |
285 | /* |
286 | * Not supported. | |
287 | */ | |
799dcac1 | 288 | case PRU_RCVOOB: |
94a62155 | 289 | case PRU_RCVD: |
799dcac1 JB |
290 | return(EOPNOTSUPP); |
291 | ||
1fe3d605 | 292 | case PRU_LISTEN: |
799dcac1 | 293 | case PRU_ACCEPT: |
94a62155 BJ |
294 | case PRU_SENDOOB: |
295 | error = EOPNOTSUPP; | |
296 | break; | |
8df9431e | 297 | |
126472ab | 298 | case PRU_SOCKADDR: |
ac76a23d | 299 | bcopy((caddr_t)&rp->rcb_laddr, mtod(nam, caddr_t), |
14fa60f2 BJ |
300 | sizeof (struct sockaddr)); |
301 | nam->m_len = sizeof (struct sockaddr); | |
126472ab SL |
302 | break; |
303 | ||
a7343092 SL |
304 | case PRU_PEERADDR: |
305 | bcopy((caddr_t)&rp->rcb_faddr, mtod(nam, caddr_t), | |
306 | sizeof (struct sockaddr)); | |
307 | nam->m_len = sizeof (struct sockaddr); | |
308 | break; | |
309 | ||
94a62155 BJ |
310 | default: |
311 | panic("raw_usrreq"); | |
312 | } | |
9e9695c7 SL |
313 | release: |
314 | if (m != NULL) | |
315 | m_freem(m); | |
94a62155 | 316 | return (error); |
8df9431e | 317 | } |