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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 $
35 * $DragonFly: src/sys/kern/uipc_domain.c,v 1.4 2003/08/26 21:09:02 rob Exp $
38 #include <sys/param.h>
39 #include <sys/socket.h>
40 #include <sys/protosw.h>
41 #include <sys/domain.h>
43 #include <sys/kernel.h>
44 #include <sys/socketvar.h>
45 #include <sys/systm.h>
46 #include <vm/vm_zone.h>
49 * System initialization
51 * Note: domain initialization wants to take place on a per domain basis
52 * as a result of traversing a linker set. Most likely, each domain
53 * want to call a registration function rather than being handled here
54 * in domaininit(). Probably this will look like:
56 * SYSINIT(unique, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY, domain_add, xxx)
58 * Where 'xxx' is replaced by the address of a parameter struct to be
59 * passed to the doamin_add() function.
62 static void domaininit (void *);
63 SYSINIT(domain, SI_SUB_PROTO_DOMAIN, SI_ORDER_FIRST, domaininit, NULL)
65 static void pffasttimo (void *);
66 static void pfslowtimo (void *);
68 struct domain *domains;
71 * Add a new protocol domain to the list of supported domains
72 * Note: you cant unload it again because a socket may be using it.
73 * XXX can't fail at this time.
76 net_init_domain(struct domain *dp)
84 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++){
85 if (pr->pr_usrreqs == 0)
86 panic("domaininit: %ssw[%d] has no usrreqs!",
88 (int)(pr - dp->dom_protosw));
93 * update global informatio about maximums
95 max_hdr = max_linkhdr + max_protohdr;
96 max_datalen = MHLEN - max_hdr;
101 * Add a new protocol domain to the list of supported domains
102 * Note: you cant unload it again because a socket may be using it.
103 * XXX can't fail at this time.
106 net_add_domain(void *data)
111 dp = (struct domain *)data;
113 dp->dom_next = domains;
121 domaininit(void *dummy)
124 * Before we do any setup, make sure to initialize the
125 * zone allocator we get struct sockets from. The obvious
126 * maximum number of sockets is `maxfiles', but it is possible
127 * to have a socket without an open file (e.g., a connection waiting
128 * to be accept(2)ed). Rather than think up and define a
129 * better value, we just use nmbclusters, since that's what people
130 * are told to increase first when the network runs out of memory.
131 * Perhaps we should have two pools, one of unlimited size
132 * for use during socreate(), and one ZONE_INTERRUPT pool for
133 * use in sonewconn().
135 socket_zone = zinit("socket", sizeof(struct socket), maxsockets,
138 if (max_linkhdr < 16) /* XXX */
141 timeout(pffasttimo, (void *)0, 1);
142 timeout(pfslowtimo, (void *)0, 1);
147 pffindtype(family, type)
154 for (dp = domains; dp; dp = dp->dom_next)
155 if (dp->dom_family == family)
159 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
160 if (pr->pr_type && pr->pr_type == type)
166 pffindproto(family, protocol, type)
173 struct protosw *maybe = 0;
177 for (dp = domains; dp; dp = dp->dom_next)
178 if (dp->dom_family == family)
182 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
183 if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
186 if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
187 pr->pr_protocol == 0 && maybe == (struct protosw *)0)
201 for (dp = domains; dp; dp = dp->dom_next)
202 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
204 (*pr->pr_ctlinput)(cmd, sa, (void *)0);
208 pfctlinput2(cmd, sa, ctlparam)
218 for (dp = domains; dp; dp = dp->dom_next) {
220 * the check must be made by xx_ctlinput() anyways, to
221 * make sure we use data item pointed to by ctlparam in
222 * correct way. the following check is made just for safety.
224 if (dp->dom_family != sa->sa_family)
227 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
229 (*pr->pr_ctlinput)(cmd, sa, ctlparam);
240 for (dp = domains; dp; dp = dp->dom_next)
241 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
243 (*pr->pr_slowtimo)();
244 timeout(pfslowtimo, (void *)0, hz/2);
254 for (dp = domains; dp; dp = dp->dom_next)
255 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
257 (*pr->pr_fasttimo)();
258 timeout(pffasttimo, (void *)0, hz/5);