diff options
Diffstat (limited to 'cpukit/libnetworking/kern/uipc_domain.c')
-rw-r--r-- | cpukit/libnetworking/kern/uipc_domain.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/cpukit/libnetworking/kern/uipc_domain.c b/cpukit/libnetworking/kern/uipc_domain.c new file mode 100644 index 0000000000..241fe4cc86 --- /dev/null +++ b/cpukit/libnetworking/kern/uipc_domain.c @@ -0,0 +1,219 @@ +/* + * Copyright (c) 1982, 1986, 1993 + * 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 8.2 (Berkeley) 10/18/93 + * $Id$ + */ + +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/protosw.h> +#include <sys/domain.h> +#include <sys/mbuf.h> +#include <sys/kernel.h> +#include <sys/systm.h> + +/* + * System initialization + * + * Note: domain initialization wants to take place on a per domain basis + * as a result of traversing a linker set. Most likely, each domain + * 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) + * + * Where 'xxx' is replaced by the address of a parameter struct to be + * passed to the doamin_add() function. + */ + +#if !defined(__rtems__) +static int x_save_spl; /* used by kludge*/ +static void kludge_splimp(void *); +static void kludge_splx(void *); + void domaininit(void *); +SYSINIT(splimp, SI_SUB_PROTO_BEGIN, SI_ORDER_FIRST, kludge_splimp, &x_save_spl) +SYSINIT(domain, SI_SUB_PROTO_DOMAIN, SI_ORDER_FIRST, domaininit, NULL) +SYSINIT(splx, SI_SUB_PROTO_END, SI_ORDER_FIRST, kludge_splx, &x_save_spl) +#endif + +static void pffasttimo(void *); +static void pfslowtimo(void *); + +struct domain *domains; + +#define ADDDOMAIN(x) { \ + __CONCAT(x,domain.dom_next) = domains; \ + domains = &__CONCAT(x,domain); \ +} + +/* ARGSUSED*/ +void +domaininit(void *dummy) +{ + register struct domain *dp; + register struct protosw *pr; + +/* - not in our sources +#ifdef ISDN + ADDDOMAIN(isdn); +#endif +*/ + + 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++){ +#ifdef PRU_OLDSTYLE + /* See comments in uipc_socket2.c. */ + if (pr->pr_usrreqs == 0 && pr->pr_ousrreq) + pr->pr_usrreqs = &pru_oldstyle; +#endif + if (pr->pr_init) + (*pr->pr_init)(); + } + } + + 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); +} + + +#if !defined(__rtems__) +/* + * The following two operations are kludge code. Most likely, they should + * be done as a "domainpreinit()" for the first function and then rolled + * in as the last act of "domaininit()" for the second. + * + * In point of fact, it is questionable why other initialization prior + * to this does not also take place at splimp by default. + */ +static void +kludge_splimp(void *udata) +{ + int *savesplp = udata; + + *savesplp = splimp(); +} + +static void +kludge_splx(void *udata) +{ + int *savesplp = udata; + + splx( *savesplp); +} +#endif /* !defined(__rtems__) */ + +struct protosw * +pffindtype(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(int family, int protocol, int 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); +} + +void +pfctlinput(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, (void *)0); +} + +static void +pfslowtimo(void *arg) +{ + 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_slowtimo) + (*pr->pr_slowtimo)(); + timeout(pfslowtimo, (void *)0, hz/2); +} + +static void +pffasttimo(void *arg) +{ + 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_fasttimo) + (*pr->pr_fasttimo)(); + timeout(pffasttimo, (void *)0, hz/5); +} |