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Minor rearranging of code to allow simple protocol domains to be

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added as KLDs.
This commit is contained in:
julian 1999-01-21 00:26:41 +00:00
parent eac817a7e0
commit f00ace60d0
2 changed files with 71 additions and 27 deletions
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95
sys/kern/uipc_domain.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)uipc_domain.c 8.2 (Berkeley) 10/18/93
* $Id: uipc_domain.c,v 1.18 1997/09/16 11:43:36 bde Exp $
* $Id: uipc_domain.c,v 1.19 1998/05/15 20:11:29 wollman Exp $
*/
#include <sys/param.h>
@ -52,7 +52,7 @@
* want to call a registration function rather than being handled here
* in domaininit(). Probably this will look like:
*
* SYSINIT(unique, SI_SUB_PROTO_DOMAI, SI_ORDER_ANY, domain_add, xxx)
* SYSINIT(unique, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY, domain_add, xxx)
*
* Where 'xxx' is replaced by the address of a parameter struct to be
* passed to the doamin_add() function.
@ -71,21 +71,64 @@ static void pfslowtimo __P((void *));
struct domain *domains;
#define ADDDOMAIN(x) { \
__CONCAT(x,domain.dom_next) = domains; \
domains = &__CONCAT(x,domain); \
/*
* Add a new protocol domain to the list of supported domains
* Note: you cant unload it again because a socket may be using it.
* XXX can't fail at this time.
*/
static int
net_init_domain(struct domain *dp)
{
register struct protosw *pr;
int s;
s = splnet();
if (dp->dom_init)
(*dp->dom_init)();
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++){
if (pr->pr_usrreqs == 0)
panic("domaininit: %ssw[%d] has no usrreqs!",
dp->dom_name,
(int)(pr - dp->dom_protosw));
if (pr->pr_init)
(*pr->pr_init)();
}
/*
* update global informatio about maximums
*/
max_hdr = max_linkhdr + max_protohdr;
max_datalen = MHLEN - max_hdr;
splx(s);
return (0);
}
/*
* Add a new protocol domain to the list of supported domains
* Note: you cant unload it again because a socket may be using it.
* XXX can't fail at this time.
*/
int
net_add_domain(struct domain *dp)
{
int s, error;
s = splnet();
dp->dom_next = domains;
domains = dp;
splx(s);
error = net_init_domain(dp);
max_hdr = max_linkhdr + max_protohdr;
max_datalen = MHLEN - max_hdr;
return (error);
}
extern struct linker_set domain_set;
/* ARGSUSED*/
static void
domaininit(dummy)
void *dummy;
domaininit(void *dummy)
{
register struct domain *dp, **dpp;
register struct protosw *pr;
/*
* Before we do any setup, make sure to initialize the
* zone allocator we get struct sockets from. The obvious
@ -101,33 +144,33 @@ domaininit(dummy)
socket_zone = zinit("socket", sizeof(struct socket), maxsockets,
ZONE_INTERRUPT, 0);
if (max_linkhdr < 16) /* XXX */
max_linkhdr = 16;
/*
* NB - local domain is always present.
*/
ADDDOMAIN(local);
net_add_domain(&localdomain);
/*
* gather up as many protocols as we have statically linked.
* XXX we need to do this because when we ask the routing
* protocol to initialise it will want to examine all
* installed protocols. This needs fixing before protocols
* that use the standard routing can become modules.
*/
for (dpp = (struct domain **)domain_set.ls_items; *dpp; dpp++) {
(**dpp).dom_next = domains;
domains = *dpp;
}
for (dp = domains; dp; dp = dp->dom_next) {
if (dp->dom_init)
(*dp->dom_init)();
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++){
if (pr->pr_usrreqs == 0)
panic("domaininit: %ssw[%d] has no usrreqs!",
dp->dom_name,
(int)(pr - dp->dom_protosw));
if (pr->pr_init)
(*pr->pr_init)();
}
}
/*
* Now ask them all to init (XXX including the routing domain,
* see above)
*/
for (dp = domains; dp; dp = dp->dom_next)
net_init_domain(dp);
if (max_linkhdr < 16) /* XXX */
max_linkhdr = 16;
max_hdr = max_linkhdr + max_protohdr;
max_datalen = MHLEN - max_hdr;
timeout(pffasttimo, (void *)0, 1);
timeout(pfslowtimo, (void *)0, 1);
}

3
sys/sys/domain.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)domain.h 8.1 (Berkeley) 6/2/93
* $Id: domain.h,v 1.9 1997/02/22 09:45:09 peter Exp $
* $Id: domain.h,v 1.10 1997/11/18 06:48:43 bde Exp $
*/
#ifndef _SYS_DOMAIN_H_
@ -66,6 +66,7 @@ struct domain {
#ifdef KERNEL
extern struct domain *domains;
extern struct domain localdomain;
extern int net_add_domain(struct domain *dp);
#define DOMAIN_SET(name) \
DATA_SET(domain_set, name ## domain)