uipc_dom.c
上传用户:nvosite88
上传日期:2007-01-17
资源大小:4983k
文件大小:9k
- /* uipc_dom.c - domain routines */
- /* Copyright 1984 - 2001 Wind River Systems, Inc. */
- #include "copyright_wrs.h"
- /*
- * Copyright (c) 1982, 1986, 1993, 1995
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)uipc_domain.c 8.3 (Berkeley) 2/14/95
- */
- /*
- modification history
- --------------------
- 01d,12oct01,rae merge from truestack ver 01e, base 01c (SPR #69112 etc.)
- 01c,01jul97,vin modified for making routing sockets scalable, removed
- unnecessary max_datalen, added addDomain function.
- 01b,22nov96,vin modified max_datalen variable to new cluster size.
- 01a,03mar96,vin created from BSD4.4 stuff and integrated with 02n version
- of uipc_dom.c. Did not change the name as it would cause
- name conflict when releasing the 44stack as a component.
- */
- #include "vxWorks.h"
- #include "wdLib.h"
- #include "errno.h"
- #include "sys/socket.h"
- #include "net/protosw.h"
- #include "net/domain.h"
- #include "net/mbuf.h"
- #ifdef VIRTUAL_STACK
- #include "netinet/vsLib.h"
- #else
- IMPORT void netJobAdd ();
- #endif
- IMPORT int sysClkRateGet();
- #ifndef VIRTUAL_STACK
- struct domain *domains; /* list of domain descriptors */
- LOCAL WDOG_ID pfslowtimoWd; /* watchdog timer for pfslowtimo routine */
- LOCAL WDOG_ID pffasttimoWd; /* watchdog timer for pffasttimo routine */
- static void pfslowtimo (void);
- static void pffasttimo (void);
- #else
- static void pfslowtimo (int stackNum);
- static void pffasttimo (int stackNum);
- #endif /* VIRTUAL_STACK */
- int max_linkhdr; /* largest link-level header */
- int max_protohdr; /* largest protocol header */
- int max_hdr; /* largest link+protocol header */
- /*******************************************************************************
- * addDomain - add the domain to the domain list
- *
- * This function adds the domain passed to it into a global domain list
- * This global domain list is used by various routines to get to the
- * protocols. After adding all the domains then call domaininit ().
- * This function is to be called only once per domain at the initialization
- * time.
- *
- * NOTE: No checking is done if a domain is added multiple times. That would be
- * insane.
- *
- * RETURNS: OK/ERROR
- *
- * NOMANUAL
- */
- int addDomain
- (
- struct domain * pDomain /* pointer to the domain to add */
- )
- {
- if (pDomain == NULL)
- return (ERROR);
- /* add the domain to the global list */
-
- pDomain->dom_next = domains;
- domains = pDomain;
-
- return (OK);
- }
- void domaininit(void)
- {
- register struct domain *dp;
- register struct protosw *pr;
- 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_init)
- (*pr->pr_init)();
- }
- if (max_linkhdr < 16) /* XXX */
- max_linkhdr = 16;
- max_hdr = max_linkhdr + max_protohdr;
- pffasttimoWd = wdCreate ();
- pfslowtimoWd = wdCreate ();
- #ifdef VIRTUAL_STACK
- pffasttimo (myStackNum);
- pfslowtimo (myStackNum);
- #else
- pffasttimo ();
- pfslowtimo ();
- #endif
- }
- struct protosw *
- pffindtype(family, type)
- int family;
- int type;
- {
- register struct domain *dp;
- register struct protosw *pr;
- for (dp = domains; dp; dp = dp->dom_next)
- if (dp->dom_family == family)
- goto found;
- return (0);
- found:
- for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
- if (pr->pr_type && pr->pr_type == type)
- return (pr);
- return (0);
- }
- struct protosw *
- pffindproto(family, protocol, type)
- int family, protocol, type;
- {
- register struct domain *dp;
- register struct protosw *pr;
- struct protosw *maybe = 0;
- if (family == 0)
- return (0);
- for (dp = domains; dp; dp = dp->dom_next)
- if (dp->dom_family == family)
- goto found;
- return (0);
- found:
- for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
- if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
- return (pr);
- if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
- pr->pr_protocol == 0 && maybe == (struct protosw *)0)
- maybe = pr;
- }
- return (maybe);
- }
- int
- net_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
- int *name;
- u_int namelen;
- void *oldp;
- size_t *oldlenp;
- void *newp;
- size_t newlen;
- struct proc *p;
- {
- register struct domain *dp;
- register struct protosw *pr;
- int family, protocol;
- /*
- * All sysctl names at this level are nonterminal;
- * next two components are protocol family and protocol number,
- * then at least one addition component.
- */
- if (namelen < 3)
- return (EISDIR); /* overloaded */
- family = name[0];
- protocol = name[1];
- if (family == 0)
- return (0);
- for (dp = domains; dp; dp = dp->dom_next)
- if (dp->dom_family == family)
- goto found;
- return (ENOPROTOOPT);
- found:
- for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
- if (pr->pr_protocol == protocol && pr->pr_sysctl)
- return ((*pr->pr_sysctl)(name + 2, namelen - 2,
- oldp, oldlenp, newp, newlen));
- return (ENOPROTOOPT);
- }
- void
- pfctlinput(cmd, sa)
- int cmd;
- struct sockaddr *sa;
- {
- register struct domain *dp;
- register struct protosw *pr;
- for (dp = domains; dp; dp = dp->dom_next)
- for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
- if (pr->pr_ctlinput)
- (*pr->pr_ctlinput)(cmd, sa, (caddr_t)0);
- }
- #ifdef VIRTUAL_STACK
- static void pfslowtimoRestart
- (
- int stackNumber
- )
- {
- netJobAdd ((FUNCPTR)pfslowtimo, stackNumber, 2, 3, 4, 5);
- }
- static void pfslowtimo
- (
- int stackNum
- )
- #else
- static void pfslowtimo (void)
- #endif
- {
- register struct domain *dp;
- register struct protosw *pr;
- int s;
- #ifdef VIRTUAL_STACK
- virtualStackNumTaskIdSet(stackNum);
- #endif
- s = splnet();
- for (dp = domains; dp; dp = dp->dom_next)
- for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
- if (pr->pr_slowtimo)
- (*pr->pr_slowtimo)();
- splx (s);
- #ifdef VIRTUAL_STACK
- wdStart (pfslowtimoWd, sysClkRateGet()/2, (FUNCPTR) pfslowtimoRestart,
- (int) myStackNum);
- #else
- wdStart (pfslowtimoWd, sysClkRateGet()/2, (FUNCPTR) netJobAdd,
- (int) pfslowtimo);
- #endif
- }
- #ifdef VIRTUAL_STACK
- static void pffasttimoRestart
- (
- int stackNumber
- )
- {
- netJobAdd ((FUNCPTR)pffasttimo, stackNumber, 2, 3, 4, 5);
- }
- static void pffasttimo
- (
- int stackNum
- )
- #else
- static void pffasttimo (void)
- #endif
- {
- register struct domain *dp;
- register struct protosw *pr;
- int s;
- #ifdef VIRTUAL_STACK
- virtualStackNumTaskIdSet(stackNum);
- #endif
- s = splnet();
- for (dp = domains; dp; dp = dp->dom_next)
- for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
- if (pr->pr_fasttimo)
- (*pr->pr_fasttimo)();
- splx (s);
- #ifdef VIRTUAL_STACK
- wdStart (pffasttimoWd, sysClkRateGet()/5, (FUNCPTR) pffasttimoRestart,
- (int) stackNum);
- #else
- wdStart (pffasttimoWd, sysClkRateGet()/5, (FUNCPTR) netJobAdd,
- (int) pffasttimo);
- #endif
- }