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54 * @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
55 * $FreeBSD: src/sys/net/raw_usrreq.c,v 1.18 1999/08/28 00:48:28 peter Exp $
58 #include <sys/param.h>
59 #include <sys/systm.h>
62 #include <sys/domain.h>
63 #include <sys/protosw.h>
64 #include <sys/socket.h>
65 #include <sys/socketvar.h>
66 #include <kern/locks.h>
68 #include <net/raw_cb.h>
70 lck_mtx_t
*raw_mtx
; /*### global raw cb mutex for now */
71 lck_attr_t
*raw_mtx_attr
;
72 lck_grp_t
*raw_mtx_grp
;
73 lck_grp_attr_t
*raw_mtx_grp_attr
;
75 * Initialize raw connection block q.
80 raw_mtx_grp_attr
= lck_grp_attr_alloc_init();
82 raw_mtx_grp
= lck_grp_alloc_init("rawcb", raw_mtx_grp_attr
);
84 raw_mtx_attr
= lck_attr_alloc_init();
86 if ((raw_mtx
= lck_mtx_alloc_init(raw_mtx_grp
, raw_mtx_attr
)) == NULL
) {
87 printf("raw_init: can't alloc raw_mtx\n");
90 LIST_INIT(&rawcb_list
);
95 * Raw protocol input routine. Find the socket
96 * associated with the packet(s) and move them over. If
97 * nothing exists for this packet, drop it.
100 * Raw protocol interface.
103 raw_input(m0
, proto
, src
, dst
)
105 register struct sockproto
*proto
;
106 struct sockaddr
*src
, *dst
;
108 register struct rawcb
*rp
;
109 register struct mbuf
*m
= m0
;
110 register int sockets
= 0;
114 //####LD raw_input is called from many places, input & output path. We have to assume the
115 //####LD socket we'll find and need to append to is unlocked.
116 //####LD calls from the output (locked) path need to make sure the socket is not locked when
117 //####LD we call in raw_input
119 lck_mtx_lock(raw_mtx
);
120 LIST_FOREACH(rp
, &rawcb_list
, list
) {
121 if (rp
->rcb_proto
.sp_family
!= proto
->sp_family
)
123 if (rp
->rcb_proto
.sp_protocol
&&
124 rp
->rcb_proto
.sp_protocol
!= proto
->sp_protocol
)
127 * We assume the lower level routines have
128 * placed the address in a canonical format
129 * suitable for a structure comparison.
131 * Note that if the lengths are not the same
132 * the comparison will fail at the first byte.
134 #define equal(a1, a2) \
135 (bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
136 if (rp
->rcb_laddr
&& !equal(rp
->rcb_laddr
, dst
))
138 if (rp
->rcb_faddr
&& !equal(rp
->rcb_faddr
, src
))
142 n
= m_copy(m
, 0, (int)M_COPYALL
);
144 socket_lock(last
, 1);
145 if (sbappendaddr(&last
->so_rcv
, src
,
146 n
, (struct mbuf
*)0, &error
) != 0) {
150 socket_unlock(last
, 1);
153 last
= rp
->rcb_socket
;
156 socket_lock(last
, 1);
157 if (sbappendaddr(&last
->so_rcv
, src
,
158 m
, (struct mbuf
*)0, &error
) != 0) {
162 socket_unlock(last
, 1);
165 lck_mtx_unlock(raw_mtx
);
170 raw_ctlinput(cmd
, arg
, dummy
)
172 struct sockaddr
*arg
;
176 if (cmd
< 0 || cmd
> PRC_NCMDS
)
182 raw_uabort(struct socket
*so
)
184 struct rawcb
*rp
= sotorawcb(so
);
186 lck_mtx_t
* mutex_held
;
187 if (so
->so_proto
->pr_getlock
!= NULL
)
188 mutex_held
= (*so
->so_proto
->pr_getlock
)(so
, 0);
190 mutex_held
= so
->so_proto
->pr_domain
->dom_mtx
;
191 lck_mtx_assert(mutex_held
, LCK_MTX_ASSERT_OWNED
);
197 soisdisconnected(so
);
201 /* pru_accept is EOPNOTSUPP */
204 raw_uattach(struct socket
*so
, int proto
, struct proc
*p
)
206 struct rawcb
*rp
= sotorawcb(so
);
214 if ((so
->so_state
& SS_PRIV
) == 0)
217 if (p
&& (error
= suser(p
)) != 0)
220 return raw_attach(so
, proto
);
224 raw_ubind(struct socket
*so
, struct sockaddr
*nam
, struct proc
*p
)
230 raw_uconnect(struct socket
*so
, struct sockaddr
*nam
, struct proc
*p
)
235 /* pru_connect2 is EOPNOTSUPP */
236 /* pru_control is EOPNOTSUPP */
239 raw_udetach(struct socket
*so
)
241 struct rawcb
*rp
= sotorawcb(so
);
243 lck_mtx_t
* mutex_held
;
244 if (so
->so_proto
->pr_getlock
!= NULL
)
245 mutex_held
= (*so
->so_proto
->pr_getlock
)(so
, 0);
247 mutex_held
= so
->so_proto
->pr_domain
->dom_mtx
;
248 lck_mtx_assert(mutex_held
, LCK_MTX_ASSERT_OWNED
);
257 raw_udisconnect(struct socket
*so
)
259 struct rawcb
*rp
= sotorawcb(so
);
263 if (rp
->rcb_faddr
== 0) {
267 soisdisconnected(so
);
271 /* pru_listen is EOPNOTSUPP */
274 raw_upeeraddr(struct socket
*so
, struct sockaddr
**nam
)
276 struct rawcb
*rp
= sotorawcb(so
);
280 if (rp
->rcb_faddr
== 0) {
283 *nam
= dup_sockaddr(rp
->rcb_faddr
, 1);
287 /* pru_rcvd is EOPNOTSUPP */
288 /* pru_rcvoob is EOPNOTSUPP */
291 raw_usend(struct socket
*so
, int flags
, struct mbuf
*m
,
292 struct sockaddr
*nam
, struct mbuf
*control
, struct proc
*p
)
295 struct rawcb
*rp
= sotorawcb(so
);
297 lck_mtx_t
* mutex_held
;
298 if (so
->so_proto
->pr_getlock
!= NULL
)
299 mutex_held
= (*so
->so_proto
->pr_getlock
)(so
, 0);
301 mutex_held
= so
->so_proto
->pr_domain
->dom_mtx
;
302 lck_mtx_assert(mutex_held
, LCK_MTX_ASSERT_OWNED
);
309 if (flags
& PRUS_OOB
) {
314 if (control
&& control
->m_len
) {
324 } else if (rp
->rcb_faddr
== 0) {
328 error
= (*so
->so_proto
->pr_output
)(m
, so
);
338 /* pru_sense is null */
341 raw_ushutdown(struct socket
*so
)
343 struct rawcb
*rp
= sotorawcb(so
);
344 lck_mtx_t
* mutex_held
;
345 if (so
->so_proto
->pr_getlock
!= NULL
)
346 mutex_held
= (*so
->so_proto
->pr_getlock
)(so
, 0);
348 mutex_held
= so
->so_proto
->pr_domain
->dom_mtx
;
349 lck_mtx_assert(mutex_held
, LCK_MTX_ASSERT_OWNED
);
358 raw_usockaddr(struct socket
*so
, struct sockaddr
**nam
)
360 struct rawcb
*rp
= sotorawcb(so
);
364 if (rp
->rcb_laddr
== 0)
366 *nam
= dup_sockaddr(rp
->rcb_laddr
, 1);
370 struct pr_usrreqs raw_usrreqs
= {
371 raw_uabort
, pru_accept_notsupp
, raw_uattach
, raw_ubind
, raw_uconnect
,
372 pru_connect2_notsupp
, pru_control_notsupp
, raw_udetach
,
373 raw_udisconnect
, pru_listen_notsupp
, raw_upeeraddr
, pru_rcvd_notsupp
,
374 pru_rcvoob_notsupp
, raw_usend
, pru_sense_null
, raw_ushutdown
,
375 raw_usockaddr
, sosend
, soreceive
, pru_sopoll_notsupp