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29 * @(#)uipc_domain.c 8.2 (Berkeley) 10/18/93
30 * $FreeBSD: src/sys/kern/uipc_domain.c,v 1.22.2.1 2001/07/03 11:01:37 ume Exp $
31 * $DragonFly: src/sys/kern/uipc_domain.c,v 1.13 2008/10/27 02:56:30 sephe Exp $
34 #include <sys/param.h>
35 #include <sys/socket.h>
36 #include <sys/protosw.h>
37 #include <sys/domain.h>
39 #include <sys/kernel.h>
40 #include <sys/socketvar.h>
41 #include <sys/socketops.h>
42 #include <sys/systm.h>
43 #include <vm/vm_zone.h>
45 #include <sys/thread2.h>
48 * System initialization
50 * Note: domain initialization wants to take place on a per domain basis
51 * as a result of traversing a linker set. Most likely, each domain
52 * want to call a registration function rather than being handled here
53 * in domaininit(). Probably this will look like:
55 * SYSINIT(unique, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY, domain_add, xxx)
57 * Where 'xxx' is replaced by the address of a parameter struct to be
58 * passed to the doamin_add() function.
61 static void domaininit (void *);
62 SYSINIT(domain, SI_SUB_PROTO_DOMAIN, SI_ORDER_FIRST, domaininit, NULL)
64 static void pffasttimo (void *);
65 static void pfslowtimo (void *);
67 struct domainlist domains;
69 static struct callout pffasttimo_ch;
70 static struct callout pfslowtimo_ch;
73 * Add a new protocol domain to the list of supported domains
74 * Note: you cant unload it again because a socket may be using it.
75 * XXX can't fail at this time.
77 #define PR_NOTSUPP(pr, label) \
78 if (pr->pr_ ## label == NULL) \
79 pr->pr_ ## label = pr_generic_notsupp;
81 #define PRU_NOTSUPP(pu, label) \
82 if (pu->pru_ ## label == NULL) \
83 pu->pru_ ## label = pr_generic_notsupp;
86 net_init_domain(struct domain *dp)
89 struct pr_usrreqs *pu;
96 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
99 panic("domaininit: %ssw[%ld] has no usrreqs!",
100 dp->dom_name, (long)(pr - dp->dom_protosw));
102 PR_NOTSUPP(pr, ctloutput);
103 PRU_NOTSUPP(pu, accept);
104 PRU_NOTSUPP(pu, bind);
105 PRU_NOTSUPP(pu, connect);
106 PRU_NOTSUPP(pu, connect2);
107 PRU_NOTSUPP(pu, control);
108 PRU_NOTSUPP(pu, disconnect);
109 PRU_NOTSUPP(pu, listen);
110 PRU_NOTSUPP(pu, peeraddr);
111 PRU_NOTSUPP(pu, rcvd);
112 PRU_NOTSUPP(pu, rcvoob);
113 PRU_NOTSUPP(pu, shutdown);
114 PRU_NOTSUPP(pu, sockaddr);
116 if (pu->pru_sense == NULL)
117 pu->pru_sense = pru_sense_null;
118 if (pu->pru_sosend == NULL)
119 pu->pru_sosend = pru_sosend_notsupp;
120 if (pu->pru_soreceive == NULL)
121 pu->pru_soreceive = pru_soreceive_notsupp;
127 * update global information about maximums
129 max_hdr = max_linkhdr + max_protohdr;
130 max_datalen = MHLEN - max_hdr;
135 * Add a new protocol domain to the list of supported domains
136 * Note: you cant unload it again because a socket may be using it.
137 * XXX can't fail at this time.
140 net_add_domain(void *data)
142 struct domain *dp = data;
145 SLIST_INSERT_HEAD(&domains, dp, dom_next);
152 domaininit(void *dummy)
154 if (max_linkhdr < 20) /* XXX */
157 callout_init_mp(&pffasttimo_ch);
158 callout_init_mp(&pfslowtimo_ch);
159 callout_reset(&pffasttimo_ch, 1, pffasttimo, NULL);
160 callout_reset(&pfslowtimo_ch, 1, pfslowtimo, NULL);
165 pffindtype(int family, int type)
170 SLIST_FOREACH(dp, &domains, dom_next)
171 if (dp->dom_family == family)
176 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
177 if (pr->pr_type && pr->pr_type == type)
183 pffindproto(int family, int protocol, int type)
187 struct protosw *maybe = NULL;
191 SLIST_FOREACH(dp, &domains, dom_next)
192 if (dp->dom_family == family)
197 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
198 if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
201 if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
202 pr->pr_protocol == 0 && maybe == NULL)
209 kpfctlinput(int cmd, struct sockaddr *sa)
214 SLIST_FOREACH(dp, &domains, dom_next) {
215 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
216 so_pru_ctlinput(pr, cmd, sa, NULL);
221 kpfctlinput2(int cmd, struct sockaddr *sa, void *ctlparam)
228 SLIST_FOREACH(dp, &domains, dom_next) {
230 * the check must be made by xx_ctlinput() anyways, to
231 * make sure we use data item pointed to by ctlparam in
232 * correct way. the following check is made just for safety.
234 if (dp->dom_family != sa->sa_family)
237 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
238 so_pru_ctlinput(pr, cmd, sa, ctlparam);
243 pfslowtimo(void *arg)
248 SLIST_FOREACH(dp, &domains, dom_next) {
249 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
251 (*pr->pr_slowtimo)();
253 callout_reset(&pfslowtimo_ch, hz / 2, pfslowtimo, NULL);
257 pffasttimo(void *arg)
262 SLIST_FOREACH(dp, &domains, dom_next) {
263 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
265 (*pr->pr_fasttimo)();
267 callout_reset(&pffasttimo_ch, hz / 5, pffasttimo, NULL);