-/* SCTP kernel reference Implementation
+/* SCTP kernel implementation
* (C) Copyright IBM Corp. 2001, 2003
* Copyright (c) Cisco 1999,2000
* Copyright (c) Motorola 1999,2000,2001
* Copyright (c) La Monte H.P. Yarroll 2001
*
- * This file is part of the SCTP kernel reference implementation.
+ * This file is part of the SCTP kernel implementation.
*
* A collection class to handle the storage of transport addresses.
*
- * The SCTP reference implementation is free software;
+ * This SCTP implementation is free software;
* you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
- * The SCTP reference implementation is distributed in the hope that it
+ * This SCTP implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
int flags)
{
struct sctp_sockaddr_entry *addr;
- struct list_head *pos;
int error = 0;
/* All addresses share the same port. */
dest->port = src->port;
/* Extract the addresses which are relevant for this scope. */
- list_for_each(pos, &src->address_list) {
- addr = list_entry(pos, struct sctp_sockaddr_entry, list);
+ list_for_each_entry(addr, &src->address_list, list) {
error = sctp_copy_one_addr(dest, &addr->a, scope,
gfp, flags);
if (error < 0)
* the assumption that we must be sitting behind a NAT.
*/
if (list_empty(&dest->address_list) && (SCTP_SCOPE_GLOBAL == scope)) {
- list_for_each(pos, &src->address_list) {
- addr = list_entry(pos, struct sctp_sockaddr_entry,
- list);
+ list_for_each_entry(addr, &src->address_list, list) {
error = sctp_copy_one_addr(dest, &addr->a,
SCTP_SCOPE_LINK, gfp,
flags);
return error;
}
+/* Exactly duplicate the address lists. This is necessary when doing
+ * peer-offs and accepts. We don't want to put all the current system
+ * addresses into the endpoint. That's useless. But we do want duplicat
+ * the list of bound addresses that the older endpoint used.
+ */
+int sctp_bind_addr_dup(struct sctp_bind_addr *dest,
+ const struct sctp_bind_addr *src,
+ gfp_t gfp)
+{
+ struct sctp_sockaddr_entry *addr;
+ int error = 0;
+
+ /* All addresses share the same port. */
+ dest->port = src->port;
+
+ list_for_each_entry(addr, &src->address_list, list) {
+ error = sctp_add_bind_addr(dest, &addr->a, 1, gfp);
+ if (error < 0)
+ break;
+ }
+
+ return error;
+}
+
/* Initialize the SCTP_bind_addr structure for either an endpoint or
* an association.
*/
/* Add an address to the bind address list in the SCTP_bind_addr structure. */
int sctp_add_bind_addr(struct sctp_bind_addr *bp, union sctp_addr *new,
- __u8 use_as_src, gfp_t gfp)
+ __u8 addr_state, gfp_t gfp)
{
struct sctp_sockaddr_entry *addr;
if (!addr->a.v4.sin_port)
addr->a.v4.sin_port = htons(bp->port);
- addr->use_as_src = use_as_src;
+ addr->state = addr_state;
addr->valid = 1;
INIT_LIST_HEAD(&addr->list);
int sctp_del_bind_addr(struct sctp_bind_addr *bp, union sctp_addr *del_addr)
{
struct sctp_sockaddr_entry *addr, *temp;
+ int found = 0;
/* We hold the socket lock when calling this function,
* and that acts as a writer synchronizing lock.
list_for_each_entry_safe(addr, temp, &bp->address_list, list) {
if (sctp_cmp_addr_exact(&addr->a, del_addr)) {
/* Found the exact match. */
+ found = 1;
addr->valid = 0;
list_del_rcu(&addr->list);
break;
}
}
- if (addr && !addr->valid) {
+ if (found) {
call_rcu(&addr->rcu, sctp_local_addr_free);
SCTP_DBG_OBJCNT_DEC(addr);
return 0;
addrparms = retval;
- list_for_each(pos, &bp->address_list) {
- addr = list_entry(pos, struct sctp_sockaddr_entry, list);
+ list_for_each_entry(addr, &bp->address_list, list) {
af = sctp_get_af_specific(addr->a.v4.sin_family);
len = af->to_addr_param(&addr->a, &rawaddr);
memcpy(addrparms.v, &rawaddr, len);
}
af->from_addr_param(&addr, rawaddr, htons(port), 0);
- retval = sctp_add_bind_addr(bp, &addr, 1, gfp);
+ retval = sctp_add_bind_addr(bp, &addr, SCTP_ADDR_SRC, gfp);
if (retval) {
/* Can't finish building the list, clean up. */
sctp_bind_addr_clean(bp);
return match;
}
+/* Get the state of the entry in the bind_addr_list */
+int sctp_bind_addr_state(const struct sctp_bind_addr *bp,
+ const union sctp_addr *addr)
+{
+ struct sctp_sockaddr_entry *laddr;
+ struct sctp_af *af;
+ int state = -1;
+
+ af = sctp_get_af_specific(addr->sa.sa_family);
+ if (unlikely(!af))
+ return state;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(laddr, &bp->address_list, list) {
+ if (!laddr->valid)
+ continue;
+ if (af->cmp_addr(&laddr->a, addr)) {
+ state = laddr->state;
+ break;
+ }
+ }
+ rcu_read_unlock();
+
+ return state;
+}
+
/* Find the first address in the bind address list that is not present in
* the addrs packed array.
*/
(((AF_INET6 == addr->sa.sa_family) &&
(flags & SCTP_ADDR6_ALLOWED) &&
(flags & SCTP_ADDR6_PEERSUPP))))
- error = sctp_add_bind_addr(dest, addr, 1, gfp);
+ error = sctp_add_bind_addr(dest, addr, SCTP_ADDR_SRC,
+ gfp);
}
return error;
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