Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index d21624c..8a482c5 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1,19 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
-/* Copyright (C) 2007-2018 B.A.T.M.A.N. contributors:
+/* Copyright (C) 2007-2019 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich, Antonio Quartulli
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program 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. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "translation-table.h"
@@ -205,7 +193,7 @@
* Return: a pointer to the corresponding tt_global_entry struct if the client
* is found, NULL otherwise.
*/
-static struct batadv_tt_global_entry *
+struct batadv_tt_global_entry *
batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const u8 *addr,
unsigned short vid)
{
@@ -300,8 +288,7 @@
* possibly release it
* @tt_global_entry: tt_global_entry to be free'd
*/
-static void
-batadv_tt_global_entry_put(struct batadv_tt_global_entry *tt_global_entry)
+void batadv_tt_global_entry_put(struct batadv_tt_global_entry *tt_global_entry)
{
kref_put(&tt_global_entry->common.refcount,
batadv_tt_global_entry_release);
@@ -616,14 +603,26 @@
struct batadv_tt_global_entry *tt_global,
const char *message)
{
+ struct batadv_tt_global_entry *tt_removed_entry;
+ struct hlist_node *tt_removed_node;
+
batadv_dbg(BATADV_DBG_TT, bat_priv,
"Deleting global tt entry %pM (vid: %d): %s\n",
tt_global->common.addr,
batadv_print_vid(tt_global->common.vid), message);
- batadv_hash_remove(bat_priv->tt.global_hash, batadv_compare_tt,
- batadv_choose_tt, &tt_global->common);
- batadv_tt_global_entry_put(tt_global);
+ tt_removed_node = batadv_hash_remove(bat_priv->tt.global_hash,
+ batadv_compare_tt,
+ batadv_choose_tt,
+ &tt_global->common);
+ if (!tt_removed_node)
+ return;
+
+ /* drop reference of remove hash entry */
+ tt_removed_entry = hlist_entry(tt_removed_node,
+ struct batadv_tt_global_entry,
+ common.hash_entry);
+ batadv_tt_global_entry_put(tt_removed_entry);
}
/**
@@ -1145,14 +1144,15 @@
* batadv_tt_local_dump_entry() - Dump one TT local entry into a message
* @msg :Netlink message to dump into
* @portid: Port making netlink request
- * @seq: Sequence number of netlink message
+ * @cb: Control block containing additional options
* @bat_priv: The bat priv with all the soft interface information
* @common: tt local & tt global common data
*
* Return: Error code, or 0 on success
*/
static int
-batadv_tt_local_dump_entry(struct sk_buff *msg, u32 portid, u32 seq,
+batadv_tt_local_dump_entry(struct sk_buff *msg, u32 portid,
+ struct netlink_callback *cb,
struct batadv_priv *bat_priv,
struct batadv_tt_common_entry *common)
{
@@ -1173,12 +1173,14 @@
batadv_softif_vlan_put(vlan);
- hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family,
- NLM_F_MULTI,
+ hdr = genlmsg_put(msg, portid, cb->nlh->nlmsg_seq,
+ &batadv_netlink_family, NLM_F_MULTI,
BATADV_CMD_GET_TRANSTABLE_LOCAL);
if (!hdr)
return -ENOBUFS;
+ genl_dump_check_consistent(cb, hdr);
+
if (nla_put(msg, BATADV_ATTR_TT_ADDRESS, ETH_ALEN, common->addr) ||
nla_put_u32(msg, BATADV_ATTR_TT_CRC32, crc) ||
nla_put_u16(msg, BATADV_ATTR_TT_VID, common->vid) ||
@@ -1201,34 +1203,39 @@
* batadv_tt_local_dump_bucket() - Dump one TT local bucket into a message
* @msg: Netlink message to dump into
* @portid: Port making netlink request
- * @seq: Sequence number of netlink message
+ * @cb: Control block containing additional options
* @bat_priv: The bat priv with all the soft interface information
- * @head: Pointer to the list containing the local tt entries
+ * @hash: hash to dump
+ * @bucket: bucket index to dump
* @idx_s: Number of entries to skip
*
* Return: Error code, or 0 on success
*/
static int
-batadv_tt_local_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq,
+batadv_tt_local_dump_bucket(struct sk_buff *msg, u32 portid,
+ struct netlink_callback *cb,
struct batadv_priv *bat_priv,
- struct hlist_head *head, int *idx_s)
+ struct batadv_hashtable *hash, unsigned int bucket,
+ int *idx_s)
{
struct batadv_tt_common_entry *common;
int idx = 0;
- rcu_read_lock();
- hlist_for_each_entry_rcu(common, head, hash_entry) {
+ spin_lock_bh(&hash->list_locks[bucket]);
+ cb->seq = atomic_read(&hash->generation) << 1 | 1;
+
+ hlist_for_each_entry(common, &hash->table[bucket], hash_entry) {
if (idx++ < *idx_s)
continue;
- if (batadv_tt_local_dump_entry(msg, portid, seq, bat_priv,
+ if (batadv_tt_local_dump_entry(msg, portid, cb, bat_priv,
common)) {
- rcu_read_unlock();
+ spin_unlock_bh(&hash->list_locks[bucket]);
*idx_s = idx - 1;
return -EMSGSIZE;
}
}
- rcu_read_unlock();
+ spin_unlock_bh(&hash->list_locks[bucket]);
*idx_s = 0;
return 0;
@@ -1248,7 +1255,6 @@
struct batadv_priv *bat_priv;
struct batadv_hard_iface *primary_if = NULL;
struct batadv_hashtable *hash;
- struct hlist_head *head;
int ret;
int ifindex;
int bucket = cb->args[0];
@@ -1276,10 +1282,8 @@
hash = bat_priv->tt.local_hash;
while (bucket < hash->size) {
- head = &hash->table[bucket];
-
- if (batadv_tt_local_dump_bucket(msg, portid, cb->nlh->nlmsg_seq,
- bat_priv, head, &idx))
+ if (batadv_tt_local_dump_bucket(msg, portid, cb, bat_priv,
+ hash, bucket, &idx))
break;
bucket++;
@@ -1332,9 +1336,10 @@
unsigned short vid, const char *message,
bool roaming)
{
+ struct batadv_tt_local_entry *tt_removed_entry;
struct batadv_tt_local_entry *tt_local_entry;
u16 flags, curr_flags = BATADV_NO_FLAGS;
- void *tt_entry_exists;
+ struct hlist_node *tt_removed_node;
tt_local_entry = batadv_tt_local_hash_find(bat_priv, addr, vid);
if (!tt_local_entry)
@@ -1363,15 +1368,18 @@
*/
batadv_tt_local_event(bat_priv, tt_local_entry, BATADV_TT_CLIENT_DEL);
- tt_entry_exists = batadv_hash_remove(bat_priv->tt.local_hash,
+ tt_removed_node = batadv_hash_remove(bat_priv->tt.local_hash,
batadv_compare_tt,
batadv_choose_tt,
&tt_local_entry->common);
- if (!tt_entry_exists)
+ if (!tt_removed_node)
goto out;
- /* extra call to free the local tt entry */
- batadv_tt_local_entry_put(tt_local_entry);
+ /* drop reference of remove hash entry */
+ tt_removed_entry = hlist_entry(tt_removed_node,
+ struct batadv_tt_local_entry,
+ common.hash_entry);
+ batadv_tt_local_entry_put(tt_removed_entry);
out:
if (tt_local_entry)
@@ -3805,6 +3813,8 @@
*/
void batadv_tt_free(struct batadv_priv *bat_priv)
{
+ batadv_tvlv_handler_unregister(bat_priv, BATADV_TVLV_ROAM, 1);
+
batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_TT, 1);
batadv_tvlv_handler_unregister(bat_priv, BATADV_TVLV_TT, 1);