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33 * @(#)uipc_domain.c 8.2 (Berkeley) 10/18/93
34 * $FreeBSD: src/sys/kern/uipc_domain.c,v 1.22.2.1 2001/07/03 11:01:37 ume Exp $
37 #include <sys/param.h>
38 #include <sys/socket.h>
39 #include <sys/protosw.h>
40 #include <sys/domain.h>
42 #include <sys/kernel.h>
43 #include <sys/socketvar.h>
44 #include <sys/systm.h>
45 #include <vm/vm_zone.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 __P((void *));
62 SYSINIT(domain, SI_SUB_PROTO_DOMAIN, SI_ORDER_FIRST, domaininit, NULL)
64 static void pffasttimo __P((void *));
65 static void pfslowtimo __P((void *));
67 struct domain *domains;
70 * Add a new protocol domain to the list of supported domains
71 * Note: you cant unload it again because a socket may be using it.
72 * XXX can't fail at this time.
75 net_init_domain(struct domain *dp)
77 register struct protosw *pr;
83 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++){
84 if (pr->pr_usrreqs == 0)
85 panic("domaininit: %ssw[%d] has no usrreqs!",
87 (int)(pr - dp->dom_protosw));
92 * update global informatio about maximums
94 max_hdr = max_linkhdr + max_protohdr;
95 max_datalen = MHLEN - max_hdr;
100 * Add a new protocol domain to the list of supported domains
101 * Note: you cant unload it again because a socket may be using it.
102 * XXX can't fail at this time.
105 net_add_domain(void *data)
110 dp = (struct domain *)data;
112 dp->dom_next = domains;
120 domaininit(void *dummy)
123 * Before we do any setup, make sure to initialize the
124 * zone allocator we get struct sockets from. The obvious
125 * maximum number of sockets is `maxfiles', but it is possible
126 * to have a socket without an open file (e.g., a connection waiting
127 * to be accept(2)ed). Rather than think up and define a
128 * better value, we just use nmbclusters, since that's what people
129 * are told to increase first when the network runs out of memory.
130 * Perhaps we should have two pools, one of unlimited size
131 * for use during socreate(), and one ZONE_INTERRUPT pool for
132 * use in sonewconn().
134 socket_zone = zinit("socket", sizeof(struct socket), maxsockets,
137 if (max_linkhdr < 16) /* XXX */
140 timeout(pffasttimo, (void *)0, 1);
141 timeout(pfslowtimo, (void *)0, 1);
146 pffindtype(family, type)
150 register struct domain *dp;
151 register struct protosw *pr;
153 for (dp = domains; dp; dp = dp->dom_next)
154 if (dp->dom_family == family)
158 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
159 if (pr->pr_type && pr->pr_type == type)
165 pffindproto(family, protocol, type)
170 register struct domain *dp;
171 register struct protosw *pr;
172 struct protosw *maybe = 0;
176 for (dp = domains; dp; dp = dp->dom_next)
177 if (dp->dom_family == family)
181 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
182 if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
185 if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
186 pr->pr_protocol == 0 && maybe == (struct protosw *)0)
197 register struct domain *dp;
198 register struct protosw *pr;
200 for (dp = domains; dp; dp = dp->dom_next)
201 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
203 (*pr->pr_ctlinput)(cmd, sa, (void *)0);
207 pfctlinput2(cmd, sa, ctlparam)
217 for (dp = domains; dp; dp = dp->dom_next) {
219 * the check must be made by xx_ctlinput() anyways, to
220 * make sure we use data item pointed to by ctlparam in
221 * correct way. the following check is made just for safety.
223 if (dp->dom_family != sa->sa_family)
226 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
228 (*pr->pr_ctlinput)(cmd, sa, ctlparam);
236 register struct domain *dp;
237 register struct protosw *pr;
239 for (dp = domains; dp; dp = dp->dom_next)
240 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
242 (*pr->pr_slowtimo)();
243 timeout(pfslowtimo, (void *)0, hz/2);
250 register struct domain *dp;
251 register struct protosw *pr;
253 for (dp = domains; dp; dp = dp->dom_next)
254 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
256 (*pr->pr_fasttimo)();
257 timeout(pffasttimo, (void *)0, hz/5);