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-rw-r--r--net/tipc/bearer.c67
1 files changed, 39 insertions, 28 deletions
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index a735c08e9d90..2fe9dcb418d4 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -34,6 +34,7 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
+#include <net/sock.h>
#include "core.h"
#include "config.h"
#include "bearer.h"
@@ -67,8 +68,6 @@ static const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = {
[TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED }
};
-struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1];
-
static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr,
bool shutting_down);
@@ -191,13 +190,14 @@ static int bearer_name_validate(const char *name,
/**
* tipc_bearer_find - locates bearer object with matching bearer name
*/
-struct tipc_bearer *tipc_bearer_find(const char *name)
+struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
u32 i;
for (i = 0; i < MAX_BEARERS; i++) {
- b_ptr = rtnl_dereference(bearer_list[i]);
+ b_ptr = rtnl_dereference(tn->bearer_list[i]);
if (b_ptr && (!strcmp(b_ptr->name, name)))
return b_ptr;
}
@@ -207,8 +207,9 @@ struct tipc_bearer *tipc_bearer_find(const char *name)
/**
* tipc_bearer_get_names - record names of bearers in buffer
*/
-struct sk_buff *tipc_bearer_get_names(void)
+struct sk_buff *tipc_bearer_get_names(struct net *net)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct sk_buff *buf;
struct tipc_bearer *b;
int i, j;
@@ -219,7 +220,7 @@ struct sk_buff *tipc_bearer_get_names(void)
for (i = 0; media_info_array[i] != NULL; i++) {
for (j = 0; j < MAX_BEARERS; j++) {
- b = rtnl_dereference(bearer_list[j]);
+ b = rtnl_dereference(tn->bearer_list[j]);
if (!b)
continue;
if (b->media == media_info_array[i]) {
@@ -232,27 +233,29 @@ struct sk_buff *tipc_bearer_get_names(void)
return buf;
}
-void tipc_bearer_add_dest(u32 bearer_id, u32 dest)
+void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
rcu_read_lock();
- b_ptr = rcu_dereference_rtnl(bearer_list[bearer_id]);
+ b_ptr = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
if (b_ptr) {
- tipc_bcbearer_sort(&b_ptr->nodes, dest, true);
+ tipc_bcbearer_sort(net, &b_ptr->nodes, dest, true);
tipc_disc_add_dest(b_ptr->link_req);
}
rcu_read_unlock();
}
-void tipc_bearer_remove_dest(u32 bearer_id, u32 dest)
+void tipc_bearer_remove_dest(struct net *net, u32 bearer_id, u32 dest)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
rcu_read_lock();
- b_ptr = rcu_dereference_rtnl(bearer_list[bearer_id]);
+ b_ptr = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
if (b_ptr) {
- tipc_bcbearer_sort(&b_ptr->nodes, dest, false);
+ tipc_bcbearer_sort(net, &b_ptr->nodes, dest, false);
tipc_disc_remove_dest(b_ptr->link_req);
}
rcu_read_unlock();
@@ -264,6 +267,7 @@ void tipc_bearer_remove_dest(u32 bearer_id, u32 dest)
int tipc_enable_bearer(struct net *net, const char *name, u32 disc_domain,
u32 priority)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
struct tipc_media *m_ptr;
struct tipc_bearer_names b_names;
@@ -315,7 +319,7 @@ restart:
bearer_id = MAX_BEARERS;
with_this_prio = 1;
for (i = MAX_BEARERS; i-- != 0; ) {
- b_ptr = rtnl_dereference(bearer_list[i]);
+ b_ptr = rtnl_dereference(tn->bearer_list[i]);
if (!b_ptr) {
bearer_id = i;
continue;
@@ -349,7 +353,7 @@ restart:
strcpy(b_ptr->name, name);
b_ptr->media = m_ptr;
- res = m_ptr->enable_media(b_ptr);
+ res = m_ptr->enable_media(net, b_ptr);
if (res) {
pr_warn("Bearer <%s> rejected, enable failure (%d)\n",
name, -res);
@@ -371,7 +375,7 @@ restart:
return -EINVAL;
}
- rcu_assign_pointer(bearer_list[bearer_id], b_ptr);
+ rcu_assign_pointer(tn->bearer_list[bearer_id], b_ptr);
pr_info("Enabled bearer <%s>, discovery domain %s, priority %u\n",
name,
@@ -398,6 +402,7 @@ static int tipc_reset_bearer(struct net *net, struct tipc_bearer *b_ptr)
static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr,
bool shutting_down)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
u32 i;
pr_info("Disabling bearer <%s>\n", b_ptr->name);
@@ -408,8 +413,8 @@ static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr,
tipc_disc_delete(b_ptr->link_req);
for (i = 0; i < MAX_BEARERS; i++) {
- if (b_ptr == rtnl_dereference(bearer_list[i])) {
- RCU_INIT_POINTER(bearer_list[i], NULL);
+ if (b_ptr == rtnl_dereference(tn->bearer_list[i])) {
+ RCU_INIT_POINTER(tn->bearer_list[i], NULL);
break;
}
}
@@ -421,7 +426,7 @@ int tipc_disable_bearer(struct net *net, const char *name)
struct tipc_bearer *b_ptr;
int res;
- b_ptr = tipc_bearer_find(name);
+ b_ptr = tipc_bearer_find(net, name);
if (b_ptr == NULL) {
pr_warn("Attempt to disable unknown bearer <%s>\n", name);
res = -EINVAL;
@@ -432,13 +437,13 @@ int tipc_disable_bearer(struct net *net, const char *name)
return res;
}
-int tipc_enable_l2_media(struct tipc_bearer *b)
+int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b)
{
struct net_device *dev;
char *driver_name = strchr((const char *)b->name, ':') + 1;
/* Find device with specified name */
- dev = dev_get_by_name(&init_net, driver_name);
+ dev = dev_get_by_name(net, driver_name);
if (!dev)
return -ENODEV;
@@ -514,13 +519,14 @@ int tipc_l2_send_msg(struct sk_buff *buf, struct tipc_bearer *b,
* The media send routine must not alter the buffer being passed in
* as it may be needed for later retransmission!
*/
-void tipc_bearer_send(u32 bearer_id, struct sk_buff *buf,
+void tipc_bearer_send(struct net *net, u32 bearer_id, struct sk_buff *buf,
struct tipc_media_addr *dest)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
rcu_read_lock();
- b_ptr = rcu_dereference_rtnl(bearer_list[bearer_id]);
+ b_ptr = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
if (likely(b_ptr))
b_ptr->media->send_msg(buf, b_ptr, dest);
rcu_read_unlock();
@@ -630,14 +636,15 @@ void tipc_bearer_cleanup(void)
void tipc_bearer_stop(struct net *net)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
u32 i;
for (i = 0; i < MAX_BEARERS; i++) {
- b_ptr = rtnl_dereference(bearer_list[i]);
+ b_ptr = rtnl_dereference(tn->bearer_list[i]);
if (b_ptr) {
bearer_disable(net, b_ptr, true);
- bearer_list[i] = NULL;
+ tn->bearer_list[i] = NULL;
}
}
}
@@ -694,6 +701,8 @@ int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb)
int i = cb->args[0];
struct tipc_bearer *bearer;
struct tipc_nl_msg msg;
+ struct net *net = sock_net(skb->sk);
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
if (i == MAX_BEARERS)
return 0;
@@ -704,7 +713,7 @@ int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb)
rtnl_lock();
for (i = 0; i < MAX_BEARERS; i++) {
- bearer = rtnl_dereference(bearer_list[i]);
+ bearer = rtnl_dereference(tn->bearer_list[i]);
if (!bearer)
continue;
@@ -726,6 +735,7 @@ int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info)
struct tipc_bearer *bearer;
struct tipc_nl_msg msg;
struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+ struct net *net = genl_info_net(info);
if (!info->attrs[TIPC_NLA_BEARER])
return -EINVAL;
@@ -749,7 +759,7 @@ int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info)
msg.seq = info->snd_seq;
rtnl_lock();
- bearer = tipc_bearer_find(name);
+ bearer = tipc_bearer_find(net, name);
if (!bearer) {
err = -EINVAL;
goto err_out;
@@ -791,7 +801,7 @@ int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info)
name = nla_data(attrs[TIPC_NLA_BEARER_NAME]);
rtnl_lock();
- bearer = tipc_bearer_find(name);
+ bearer = tipc_bearer_find(net, name);
if (!bearer) {
rtnl_unlock();
return -EINVAL;
@@ -861,6 +871,7 @@ int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info)
char *name;
struct tipc_bearer *b;
struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+ struct net *net = genl_info_net(info);
if (!info->attrs[TIPC_NLA_BEARER])
return -EINVAL;
@@ -876,7 +887,7 @@ int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info)
name = nla_data(attrs[TIPC_NLA_BEARER_NAME]);
rtnl_lock();
- b = tipc_bearer_find(name);
+ b = tipc_bearer_find(net, name);
if (!b) {
rtnl_unlock();
return -EINVAL;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.