/*
- * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2004-2010 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the
- * License may not be used to create, or enable the creation or
- * redistribution of, unlawful or unlicensed copies of an Apple operating
- * system, or to circumvent, violate, or enable the circumvention or
- * violation of, any terms of an Apple operating system software license
- * agreement.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
__private_extern__ void
multicast_list_init(struct multicast_list * mc_list)
{
- SLIST_INIT(mc_list);
- return;
+ SLIST_INIT(mc_list);
+ return;
}
/*
__private_extern__ int
multicast_list_remove(struct multicast_list * mc_list)
{
- int error;
- struct multicast_entry * mc;
- int result = 0;
+ int error;
+ struct multicast_entry * mc;
+ int result = 0;
- while ((mc = SLIST_FIRST(mc_list)) != NULL) {
- error = ifnet_remove_multicast(mc->mc_ifma);
- if (error != 0) {
- result = error;
+ while ((mc = SLIST_FIRST(mc_list)) != NULL) {
+ error = ifnet_remove_multicast(mc->mc_ifma);
+ if (error != 0) {
+ result = error;
+ }
+ SLIST_REMOVE_HEAD(mc_list, mc_entries);
+ ifmaddr_release(mc->mc_ifma);
+ FREE(mc, M_DEVBUF);
}
- SLIST_REMOVE_HEAD(mc_list, mc_entries);
- ifmaddr_release(mc->mc_ifma);
- FREE(mc, M_DEVBUF);
- }
- return (result);
+ return result;
}
/*
* "source_ifp", and saving the result in "mc_list"
*
* We build a new list of multicast addresses while programming the new list.
- * If that completes successfully, we remove the old list, and return the
+ * If that completes successfully, we remove the old list, and return the
* new list.
*
* If it fails, we remove what we've added to the new list, and
*/
__private_extern__ int
multicast_list_program(struct multicast_list * mc_list,
- struct ifnet * source_ifp,
- struct ifnet * target_ifp)
+ struct ifnet * source_ifp,
+ struct ifnet * target_ifp)
{
- int alen;
- int error = 0;
- int i;
- struct multicast_entry * mc = NULL;
- struct multicast_list new_mc_list;
- struct sockaddr_dl source_sdl;
- ifmultiaddr_t * source_multicast_list;
- struct sockaddr_dl target_sdl;
+ u_char alen;
+ int error = 0;
+ int i;
+ struct multicast_entry * mc = NULL;
+ struct multicast_list new_mc_list;
+ struct sockaddr_dl source_sdl = {};
+ ifmultiaddr_t * source_multicast_list;
+ struct sockaddr_dl target_sdl;
- alen = target_ifp->if_addrlen;
- bzero((char *)&target_sdl, sizeof(target_sdl));
- target_sdl.sdl_len = sizeof(target_sdl);
- target_sdl.sdl_family = AF_LINK;
- target_sdl.sdl_type = target_ifp->if_type;
- target_sdl.sdl_alen = alen;
- target_sdl.sdl_index = target_ifp->if_index;
+ alen = target_ifp->if_addrlen;
+ bzero((char *)&target_sdl, sizeof(target_sdl));
+ target_sdl.sdl_len = sizeof(target_sdl);
+ target_sdl.sdl_family = AF_LINK;
+ target_sdl.sdl_type = target_ifp->if_type;
+ target_sdl.sdl_alen = alen;
+ target_sdl.sdl_index = target_ifp->if_index;
- /* build a new list */
- multicast_list_init(&new_mc_list);
- error = ifnet_get_multicast_list(source_ifp, &source_multicast_list);
- if (error != 0) {
- printf("multicast_list_program: "
- "ifnet_get_multicast_list(%s%d) failed, %d\n",
- source_ifp->if_name, source_ifp->if_unit, error);
- return (error);
- }
- for (i = 0; source_multicast_list[i] != NULL; i++) {
- if (ifmaddr_address(source_multicast_list[i],
- (struct sockaddr *)&source_sdl,
- sizeof(source_sdl)) != 0
- || source_sdl.sdl_family != AF_LINK) {
- continue;
+ /* build a new list */
+ multicast_list_init(&new_mc_list);
+ error = ifnet_get_multicast_list(source_ifp, &source_multicast_list);
+ if (error != 0) {
+ printf("multicast_list_program: "
+ "ifnet_get_multicast_list(%s%d) failed, %d\n",
+ source_ifp->if_name, source_ifp->if_unit, error);
+ return error;
+ }
+ for (i = 0; source_multicast_list[i] != NULL; i++) {
+ if (ifmaddr_address(source_multicast_list[i],
+ (struct sockaddr *)&source_sdl,
+ sizeof(source_sdl)) != 0
+ || source_sdl.sdl_family != AF_LINK) {
+ continue;
+ }
+ mc = _MALLOC(sizeof(struct multicast_entry), M_DEVBUF, M_WAITOK);
+ if (mc == NULL) {
+ error = ENOBUFS;
+ break;
+ }
+ bcopy(LLADDR(&source_sdl), LLADDR(&target_sdl), alen);
+ error = ifnet_add_multicast(target_ifp, (struct sockaddr *)&target_sdl,
+ &mc->mc_ifma);
+ if (error != 0) {
+ FREE(mc, M_DEVBUF);
+ break;
+ }
+ SLIST_INSERT_HEAD(&new_mc_list, mc, mc_entries);
}
- mc = _MALLOC(sizeof(struct multicast_entry), M_DEVBUF, M_WAITOK);
- bcopy(LLADDR(&source_sdl), LLADDR(&target_sdl), alen);
- error = ifnet_add_multicast(target_ifp, (struct sockaddr *)&target_sdl,
- &mc->mc_ifma);
if (error != 0) {
- FREE(mc, M_DEVBUF);
- break;
+ /* restore previous state */
+ (void)multicast_list_remove(&new_mc_list);
+ } else {
+ /* remove the old entries, and return the new list */
+ (void)multicast_list_remove(mc_list);
+ *mc_list = new_mc_list;
}
- SLIST_INSERT_HEAD(&new_mc_list, mc, mc_entries);
- }
- if (error != 0) {
- /* restore previous state */
- (void)multicast_list_remove(&new_mc_list);
- } else {
- /* remove the old entries, and return the new list */
- (void)multicast_list_remove(mc_list);
- *mc_list = new_mc_list;
- }
- return (error);
+ ifnet_free_multicast_list(source_multicast_list);
+ return error;
}
projects / apple / xnu.git / blobdiff