Commit | Line | Data |
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f832270b | 1 | /* raw_usrreq.c 4.18 82/07/24 */ |
8df9431e BJ |
2 | |
3 | #include "../h/param.h" | |
4 | #include "../h/mbuf.h" | |
94a62155 | 5 | #include "../h/protosw.h" |
8df9431e BJ |
6 | #include "../h/socket.h" |
7 | #include "../h/socketvar.h" | |
8 | #include "../h/mtpr.h" | |
9 | #include "../net/in.h" | |
10 | #include "../net/in_systm.h" | |
11 | #include "../net/if.h" | |
94a62155 | 12 | #include "../net/raw_cb.h" |
126472ab | 13 | #include <errno.h> |
94a62155 | 14 | |
1e977657 BJ |
15 | int rawqmaxlen = IFQ_MAXLEN; |
16 | ||
94a62155 BJ |
17 | /* |
18 | * Initialize raw connection block q. | |
1e977657 | 19 | */ |
94a62155 BJ |
20 | raw_init() |
21 | { | |
1e977657 | 22 | |
94a62155 | 23 | rawcb.rcb_next = rawcb.rcb_prev = &rawcb; |
1e977657 | 24 | rawintrq.ifq_maxlen = IFQ_MAXLEN; |
94a62155 | 25 | } |
8df9431e BJ |
26 | |
27 | /* | |
28 | * Raw protocol interface. | |
29 | */ | |
02122dcc | 30 | raw_input(m0, proto, src, dst) |
94a62155 | 31 | struct mbuf *m0; |
126472ab | 32 | struct sockproto *proto; |
02122dcc | 33 | struct sockaddr *src, *dst; |
8df9431e | 34 | { |
94a62155 BJ |
35 | register struct mbuf *m; |
36 | struct raw_header *rh; | |
8df9431e BJ |
37 | int s; |
38 | ||
94a62155 BJ |
39 | /* |
40 | * Rip off an mbuf for a generic header. | |
41 | */ | |
42 | m = m_get(M_DONTWAIT); | |
43 | if (m == 0) { | |
44 | m_freem(m0); | |
45 | return; | |
46 | } | |
47 | m->m_next = m0; | |
48 | m->m_off = MMINOFF; | |
49 | m->m_len = sizeof(struct raw_header); | |
50 | rh = mtod(m, struct raw_header *); | |
126472ab SL |
51 | rh->raw_dst = *dst; |
52 | rh->raw_src = *src; | |
53 | rh->raw_proto = *proto; | |
94a62155 BJ |
54 | |
55 | /* | |
56 | * Header now contains enough info to decide | |
57 | * which socket to place packet in (if any). | |
58 | * Queue it up for the raw protocol process | |
59 | * running at software interrupt level. | |
60 | */ | |
8df9431e | 61 | s = splimp(); |
1e977657 BJ |
62 | if (IF_QFULL(&rawintrq)) |
63 | m_freem(m); | |
64 | else | |
65 | IF_ENQUEUE(&rawintrq, m); | |
8df9431e | 66 | splx(s); |
9c8692e9 | 67 | schednetisr(NETISR_RAW); |
8df9431e BJ |
68 | } |
69 | ||
94a62155 BJ |
70 | /* |
71 | * Raw protocol input routine. Process packets entered | |
72 | * into the queue at interrupt time. Find the socket | |
73 | * associated with the packet(s) and move them over. If | |
74 | * nothing exists for this packet, drop it. | |
75 | */ | |
8df9431e BJ |
76 | rawintr() |
77 | { | |
78 | int s; | |
79 | struct mbuf *m; | |
94a62155 | 80 | register struct rawcb *rp; |
126472ab | 81 | register struct protosw *lproto; |
02122dcc | 82 | register struct raw_header *rh; |
94a62155 | 83 | struct socket *last; |
8df9431e | 84 | |
8df9431e BJ |
85 | next: |
86 | s = splimp(); | |
8df9431e BJ |
87 | IF_DEQUEUE(&rawintrq, m); |
88 | splx(s); | |
89 | if (m == 0) | |
90 | return; | |
126472ab | 91 | rh = mtod(m, struct raw_header *); |
94a62155 BJ |
92 | last = 0; |
93 | for (rp = rawcb.rcb_next; rp != &rawcb; rp = rp->rcb_next) { | |
126472ab SL |
94 | lproto = rp->rcb_socket->so_proto; |
95 | if (lproto->pr_family != rh->raw_proto.sp_family) | |
94a62155 | 96 | continue; |
126472ab SL |
97 | if (lproto->pr_protocol && |
98 | lproto->pr_protocol != rh->raw_proto.sp_protocol) | |
99 | continue; | |
94a62155 BJ |
100 | /* |
101 | * We assume the lower level routines have | |
102 | * placed the address in a canonical format | |
126472ab | 103 | * suitable for a structure comparison. |
94a62155 | 104 | */ |
02122dcc SL |
105 | #define equal(a1, a2) \ |
106 | (bcmp((caddr_t)&(a1), (caddr_t)&(a2), sizeof (struct sockaddr)) == 0) | |
126472ab | 107 | if ((rp->rcb_flags & RAW_LADDR) && |
02122dcc | 108 | !equal(rp->rcb_laddr, rh->raw_dst)) |
126472ab SL |
109 | continue; |
110 | if ((rp->rcb_flags & RAW_FADDR) && | |
02122dcc | 111 | !equal(rp->rcb_faddr, rh->raw_src)) |
94a62155 | 112 | continue; |
94a62155 BJ |
113 | if (last) { |
114 | struct mbuf *n; | |
f832270b | 115 | if ((n = m_copy(m->m_next, 0, (int)M_COPYALL)) == 0) |
94a62155 | 116 | goto nospace; |
126472ab SL |
117 | if (sbappendaddr(&last->so_rcv, &rh->raw_src, n)==0) { |
118 | /* should notify about lost packet */ | |
faad37c0 SL |
119 | m_freem(n); |
120 | goto nospace; | |
121 | } | |
94a62155 BJ |
122 | sorwakeup(last); |
123 | } | |
124 | nospace: | |
126472ab | 125 | last = rp->rcb_socket; |
94a62155 | 126 | } |
72e4f44e SL |
127 | if (last) { |
128 | m = m_free(m); /* header */ | |
129 | if (sbappendaddr(&last->so_rcv, &rh->raw_src, m) == 0) | |
130 | goto drop; | |
131 | sorwakeup(last); | |
132 | goto next; | |
133 | } | |
8df9431e BJ |
134 | drop: |
135 | m_freem(m); | |
136 | goto next; | |
137 | } | |
138 | ||
72e4f44e SL |
139 | raw_ctlinput(cmd, arg) |
140 | int cmd; | |
141 | caddr_t arg; | |
142 | { | |
39674d5f SL |
143 | |
144 | if (cmd < 0 || cmd > PRC_NCMDS) | |
145 | return; | |
72e4f44e SL |
146 | } |
147 | ||
8df9431e BJ |
148 | /*ARGSUSED*/ |
149 | raw_usrreq(so, req, m, addr) | |
150 | struct socket *so; | |
151 | int req; | |
152 | struct mbuf *m; | |
153 | caddr_t addr; | |
154 | { | |
94a62155 BJ |
155 | register struct rawcb *rp = sotorawcb(so); |
156 | int error = 0; | |
8df9431e | 157 | |
94a62155 BJ |
158 | if (rp == 0 && req != PRU_ATTACH) |
159 | return (EINVAL); | |
160 | ||
161 | switch (req) { | |
162 | ||
163 | /* | |
164 | * Allocate a raw control block and fill in the | |
165 | * necessary info to allow packets to be routed to | |
166 | * the appropriate raw interface routine. | |
167 | */ | |
168 | case PRU_ATTACH: | |
1e977657 | 169 | if ((so->so_state & SS_PRIV) == 0) |
72e4f44e | 170 | return (EACCES); |
94a62155 | 171 | if (rp) |
1e977657 | 172 | return (EINVAL); |
94a62155 BJ |
173 | error = raw_attach(so, (struct sockaddr *)addr); |
174 | break; | |
175 | ||
176 | /* | |
177 | * Destroy state just before socket deallocation. | |
178 | * Flush data or not depending on the options. | |
179 | */ | |
180 | case PRU_DETACH: | |
181 | if (rp == 0) | |
182 | return (ENOTCONN); | |
183 | raw_detach(rp); | |
184 | break; | |
185 | ||
186 | /* | |
187 | * If a socket isn't bound to a single address, | |
188 | * the raw input routine will hand it anything | |
189 | * within that protocol family (assuming there's | |
190 | * nothing else around it should go to). | |
191 | */ | |
192 | case PRU_CONNECT: | |
126472ab | 193 | if (rp->rcb_flags & RAW_FADDR) |
94a62155 BJ |
194 | return (EISCONN); |
195 | raw_connaddr(rp, (struct sockaddr *)addr); | |
196 | soisconnected(so); | |
197 | break; | |
198 | ||
199 | case PRU_DISCONNECT: | |
126472ab | 200 | if ((rp->rcb_flags & RAW_FADDR) == 0) |
94a62155 BJ |
201 | return (ENOTCONN); |
202 | raw_disconnect(rp); | |
203 | soisdisconnected(so); | |
204 | break; | |
205 | ||
206 | /* | |
207 | * Mark the connection as being incapable of further input. | |
208 | */ | |
209 | case PRU_SHUTDOWN: | |
210 | socantsendmore(so); | |
211 | break; | |
212 | ||
213 | /* | |
214 | * Ship a packet out. The appropriate raw output | |
215 | * routine handles any massaging necessary. | |
216 | */ | |
217 | case PRU_SEND: | |
218 | if (addr) { | |
126472ab | 219 | if (rp->rcb_flags & RAW_FADDR) |
94a62155 BJ |
220 | return (EISCONN); |
221 | raw_connaddr(rp, (struct sockaddr *)addr); | |
126472ab | 222 | } else if ((rp->rcb_flags & RAW_FADDR) == 0) |
94a62155 | 223 | return (ENOTCONN); |
8a2f82db | 224 | error = (*so->so_proto->pr_output)(m, so); |
94a62155 | 225 | if (addr) |
126472ab | 226 | rp->rcb_flags &= ~RAW_FADDR; |
94a62155 BJ |
227 | break; |
228 | ||
229 | case PRU_ABORT: | |
230 | raw_disconnect(rp); | |
231 | sofree(so); | |
232 | soisdisconnected(so); | |
233 | break; | |
234 | ||
235 | /* | |
236 | * Not supported. | |
237 | */ | |
238 | case PRU_ACCEPT: | |
239 | case PRU_RCVD: | |
240 | case PRU_CONTROL: | |
241 | case PRU_SENSE: | |
242 | case PRU_RCVOOB: | |
243 | case PRU_SENDOOB: | |
244 | error = EOPNOTSUPP; | |
245 | break; | |
8df9431e | 246 | |
126472ab SL |
247 | case PRU_SOCKADDR: |
248 | bcopy(addr, (caddr_t)&rp->rcb_laddr, sizeof (struct sockaddr)); | |
249 | break; | |
250 | ||
94a62155 BJ |
251 | default: |
252 | panic("raw_usrreq"); | |
253 | } | |
254 | return (error); | |
8df9431e | 255 | } |