/*
- * Copyright (c) 2004-2012 Apple Inc. All rights reserved.
+ * Copyright (c) 2004-2013 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_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
* 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.
- *
+ *
* 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,
* 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_OSREFERENCE_LICENSE_HEADER_END@
*/
typedef int (*detach_t)(struct ifnet *ifp, uint32_t protocol_family);
struct proto_input_entry {
- struct proto_input_entry *next;
- int detach;
- struct domain *domain;
- int hash;
- int chain;
-
- protocol_family_t protocol;
- proto_input_handler input;
- proto_input_detached_handler detached;
-
- mbuf_t inject_first;
- mbuf_t inject_last;
-
- struct proto_input_entry *input_next;
- mbuf_t input_first;
- mbuf_t input_last;
+ struct proto_input_entry *next;
+ int detach;
+ struct domain *domain;
+ int hash;
+ int chain;
+
+ protocol_family_t protocol;
+ proto_input_handler input;
+ proto_input_detached_handler detached;
+
+ mbuf_t inject_first;
+ mbuf_t inject_last;
+
+ struct proto_input_entry *input_next;
+ mbuf_t input_first;
+ mbuf_t input_last;
};
struct proto_family_str {
- TAILQ_ENTRY(proto_family_str) proto_fam_next;
- protocol_family_t proto_family;
- ifnet_family_t if_family;
- proto_plumb_handler attach_proto;
- proto_unplumb_handler detach_proto;
+ TAILQ_ENTRY(proto_family_str) proto_fam_next;
+ protocol_family_t proto_family;
+ ifnet_family_t if_family;
+ proto_plumb_handler attach_proto;
+ proto_unplumb_handler detach_proto;
};
-#define PROTO_HASH_SLOTS 5
-
static struct proto_input_entry *proto_hash[PROTO_HASH_SLOTS];
static int proto_total_waiting = 0;
-static struct proto_input_entry *proto_input_add_list = NULL;
+static struct proto_input_entry *proto_input_add_list = NULL;
decl_lck_mtx_data(static, proto_family_mutex_data);
static lck_mtx_t *proto_family_mutex = &proto_family_mutex_data;
static TAILQ_HEAD(, proto_family_str) proto_family_head =
TAILQ_HEAD_INITIALIZER(proto_family_head);
-static int
-proto_hash_value(protocol_family_t protocol)
-{
- switch (protocol) {
- case PF_INET:
- return (0);
- case PF_INET6:
- return (1);
- case PF_APPLETALK:
- return (2);
- case PF_VLAN:
- return (3);
- }
- return (4);
-}
-
__private_extern__ void
proto_kpi_init(void)
{
- lck_grp_attr_t *grp_attrib = NULL;
- lck_attr_t *lck_attrib = NULL;
- lck_grp_t *lck_group = NULL;
+ lck_grp_attr_t *grp_attrib = NULL;
+ lck_attr_t *lck_attrib = NULL;
+ lck_grp_t *lck_group = NULL;
/* Allocate a mtx lock */
grp_attrib = lck_grp_attr_alloc_init();
lck_grp_free(lck_group);
lck_attr_free(lck_attrib);
- bzero(proto_hash, sizeof (proto_hash));
+ bzero(proto_hash, sizeof(proto_hash));
}
__private_extern__ errno_t
proto_register_input(protocol_family_t protocol, proto_input_handler input,
- proto_input_detached_handler detached, int chains)
+ proto_input_detached_handler detached, int chains)
{
struct proto_input_entry *entry;
struct dlil_threading_info *inp = dlil_main_input_thread;
- struct domain *dp = domains;
- int do_unlock;
-
- entry = _MALLOC(sizeof (*entry), M_IFADDR, M_WAITOK);
+ struct domain *dp;
+ domain_guard_t guard;
- if (entry == NULL)
- return (ENOMEM);
+ entry = _MALLOC(sizeof(*entry), M_IFADDR, M_WAITOK | M_ZERO);
+ if (entry == NULL) {
+ return ENOMEM;
+ }
- bzero(entry, sizeof (*entry));
entry->protocol = protocol;
entry->input = input;
entry->detached = detached;
entry->hash = proto_hash_value(protocol);
entry->chain = chains;
- do_unlock = domain_proto_mtx_lock();
- while (dp && (protocol_family_t)dp->dom_family != protocol)
- dp = dp->dom_next;
+ guard = domain_guard_deploy();
+ TAILQ_FOREACH(dp, &domains, dom_entry) {
+ if (dp->dom_family == (int)protocol) {
+ break;
+ }
+ }
+ domain_guard_release(guard);
+ if (dp == NULL) {
+ return EINVAL;
+ }
+
entry->domain = dp;
- domain_proto_mtx_unlock(do_unlock);
lck_mtx_lock(&inp->input_lck);
entry->next = proto_input_add_list;
proto_input_add_list = entry;
inp->input_waiting |= DLIL_PROTO_REGISTER;
- if ((inp->input_waiting & DLIL_INPUT_RUNNING) == 0)
+ if ((inp->input_waiting & DLIL_INPUT_RUNNING) == 0) {
wakeup((caddr_t)&inp->input_waiting);
+ }
lck_mtx_unlock(&inp->input_lck);
- return (0);
+ return 0;
}
__private_extern__ void
for (entry = proto_hash[proto_hash_value(protocol)]; entry != NULL;
entry = entry->next) {
- if (entry->protocol == protocol)
+ if (entry->protocol == protocol) {
break;
+ }
}
- if (entry != NULL)
+ if (entry != NULL) {
entry->detach = 1;
+ }
}
static void
for (exist = proto_hash[hash_slot]; exist != NULL;
exist = exist->next) {
- if (exist->protocol == entry->protocol)
+ if (exist->protocol == entry->protocol) {
break;
+ }
}
/* If the entry already exists, call detached and dispose */
if (exist != NULL) {
- if (entry->detached)
+ if (entry->detached) {
entry->detached(entry->protocol);
+ }
FREE(entry, M_IFADDR);
} else {
entry->next = proto_hash[hash_slot];
mbuf_t packet_list;
int i, locked = 0;
- lck_mtx_assert(&inp->input_lck, LCK_MTX_ASSERT_NOTOWNED);
+ LCK_MTX_ASSERT(&inp->input_lck, LCK_MTX_ASSERT_NOTOWNED);
if (inp->input_waiting & DLIL_PROTO_REGISTER) {
lck_mtx_lock_spin(&inp->input_lck);
entry->input(entry->protocol,
packet_list);
} else {
- mbuf_t packet;
+ mbuf_t packet;
for (packet = packet_list;
packet != NULL;
for (entry = proto_hash[proto_hash_value(protocol)]; entry != NULL;
entry = entry->next) {
- if (entry->protocol == protocol)
+ if (entry->protocol == protocol) {
break;
+ }
+ }
+
+ if (entry == NULL) {
+ return -1;
}
if (entry->domain && !(entry->domain->dom_flags & DOM_REENTRANT)) {
if (entry->chain) {
entry->input(entry->protocol, packet_list);
} else {
- mbuf_t packet;
+ mbuf_t packet;
for (packet = packet_list; packet != NULL;
packet = packet_list) {
if (locked) {
lck_mtx_unlock(entry->domain->dom_mtx);
}
- return (result);
+ return result;
}
errno_t
struct dlil_threading_info *inp = dlil_main_input_thread;
for (last_packet = packet_list; mbuf_nextpkt(last_packet) != NULL;
- last_packet = mbuf_nextpkt(last_packet))
+ last_packet = mbuf_nextpkt(last_packet)) {
/* find the last packet */;
+ }
for (entry = proto_hash[hash_slot]; entry != NULL;
entry = entry->next) {
- if (entry->protocol == protocol)
+ if (entry->protocol == protocol) {
break;
+ }
}
if (entry != NULL) {
}
lck_mtx_unlock(&inp->input_lck);
} else {
- return (ENOENT);
+ return ENOENT;
}
- return (0);
+ return 0;
}
static struct proto_family_str *
TAILQ_FOREACH(mod, &proto_family_head, proto_fam_next) {
if ((mod->proto_family == (proto_family & 0xffff)) &&
- (mod->if_family == (if_family & 0xffff)))
+ (mod->if_family == (if_family & 0xffff))) {
break;
+ }
}
- return (mod);
+ return mod;
}
errno_t
{
struct proto_family_str *proto_family;
- if (attach == NULL)
- return (EINVAL);
+ if (attach == NULL) {
+ return EINVAL;
+ }
lck_mtx_lock(proto_family_mutex);
if (proto_family->proto_family == protocol_family &&
proto_family->if_family == interface_family) {
lck_mtx_unlock(proto_family_mutex);
- return (EEXIST);
+ return EEXIST;
}
}
proto_family = (struct proto_family_str *)
- _MALLOC(sizeof (struct proto_family_str), M_IFADDR, M_WAITOK);
+ _MALLOC(sizeof(struct proto_family_str), M_IFADDR,
+ M_WAITOK | M_ZERO);
if (!proto_family) {
lck_mtx_unlock(proto_family_mutex);
- return (ENOMEM);
+ return ENOMEM;
}
- bzero(proto_family, sizeof (struct proto_family_str));
- proto_family->proto_family = protocol_family;
- proto_family->if_family = interface_family & 0xffff;
- proto_family->attach_proto = attach;
- proto_family->detach_proto = detach;
+ proto_family->proto_family = protocol_family;
+ proto_family->if_family = interface_family & 0xffff;
+ proto_family->attach_proto = attach;
+ proto_family->detach_proto = detach;
TAILQ_INSERT_TAIL(&proto_family_head, proto_family, proto_fam_next);
lck_mtx_unlock(proto_family_mutex);
- return (0);
+ return 0;
}
void
proto_family = proto_plumber_find(protocol_family, ifp->if_family);
if (proto_family == NULL) {
lck_mtx_unlock(proto_family_mutex);
- return (ENXIO);
+ return ENXIO;
}
ret = proto_family->attach_proto(ifp, protocol_family);
lck_mtx_unlock(proto_family_mutex);
- return (ret);
+ return ret;
}
lck_mtx_lock(proto_family_mutex);
proto_family = proto_plumber_find(protocol_family, ifp->if_family);
- if (proto_family != NULL && proto_family->detach_proto)
+ if (proto_family != NULL && proto_family->detach_proto) {
proto_family->detach_proto(ifp, protocol_family);
- else
+ } else {
ret = ifnet_detach_protocol(ifp, protocol_family);
+ }
lck_mtx_unlock(proto_family_mutex);
- return (ret);
+ return ret;
}
projects / apple / xnu.git / blobdiff