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Message-ID: <20201106215049.1448185-1-horatiu.vultur@microchip.com>
Date: Fri, 6 Nov 2020 22:50:49 +0100
From: Horatiu Vultur <horatiu.vultur@...rochip.com>
To: <nikolay@...dia.com>, <roopa@...dia.com>, <davem@...emloft.net>,
<kuba@...nel.org>, <bridge@...ts.linux-foundation.org>,
<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: [PATCH net-next] bridge: mrp: Use hlist_head instead of list_head for mrp
Replace list_head with hlist_head for MRP list under the bridge.
There is no need for a circular list when a linear list will work.
This will also decrease the size of 'struct net_bridge'.
Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
---
net/bridge/br_device.c | 2 +-
net/bridge/br_mrp.c | 26 +++++++++++++-------------
net/bridge/br_mrp_netlink.c | 2 +-
net/bridge/br_private.h | 2 +-
net/bridge/br_private_mrp.h | 2 +-
5 files changed, 17 insertions(+), 17 deletions(-)
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 2400a66fe76e8..387403931a63f 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -456,7 +456,7 @@ void br_dev_setup(struct net_device *dev)
INIT_HLIST_HEAD(&br->fdb_list);
INIT_HLIST_HEAD(&br->frame_type_list);
#if IS_ENABLED(CONFIG_BRIDGE_MRP)
- INIT_LIST_HEAD(&br->mrp_list);
+ INIT_HLIST_HEAD(&br->mrp_list);
#endif
#if IS_ENABLED(CONFIG_BRIDGE_CFM)
INIT_HLIST_HEAD(&br->mep_list);
diff --git a/net/bridge/br_mrp.c b/net/bridge/br_mrp.c
index f94d72bb7c32a..bb12fbf9aaf2b 100644
--- a/net/bridge/br_mrp.c
+++ b/net/bridge/br_mrp.c
@@ -54,8 +54,8 @@ static struct br_mrp *br_mrp_find_id(struct net_bridge *br, u32 ring_id)
struct br_mrp *res = NULL;
struct br_mrp *mrp;
- list_for_each_entry_rcu(mrp, &br->mrp_list, list,
- lockdep_rtnl_is_held()) {
+ hlist_for_each_entry_rcu(mrp, &br->mrp_list, list,
+ lockdep_rtnl_is_held()) {
if (mrp->ring_id == ring_id) {
res = mrp;
break;
@@ -70,8 +70,8 @@ static struct br_mrp *br_mrp_find_in_id(struct net_bridge *br, u32 in_id)
struct br_mrp *res = NULL;
struct br_mrp *mrp;
- list_for_each_entry_rcu(mrp, &br->mrp_list, list,
- lockdep_rtnl_is_held()) {
+ hlist_for_each_entry_rcu(mrp, &br->mrp_list, list,
+ lockdep_rtnl_is_held()) {
if (mrp->in_id == in_id) {
res = mrp;
break;
@@ -85,8 +85,8 @@ static bool br_mrp_unique_ifindex(struct net_bridge *br, u32 ifindex)
{
struct br_mrp *mrp;
- list_for_each_entry_rcu(mrp, &br->mrp_list, list,
- lockdep_rtnl_is_held()) {
+ hlist_for_each_entry_rcu(mrp, &br->mrp_list, list,
+ lockdep_rtnl_is_held()) {
struct net_bridge_port *p;
p = rtnl_dereference(mrp->p_port);
@@ -111,8 +111,8 @@ static struct br_mrp *br_mrp_find_port(struct net_bridge *br,
struct br_mrp *res = NULL;
struct br_mrp *mrp;
- list_for_each_entry_rcu(mrp, &br->mrp_list, list,
- lockdep_rtnl_is_held()) {
+ hlist_for_each_entry_rcu(mrp, &br->mrp_list, list,
+ lockdep_rtnl_is_held()) {
if (rcu_access_pointer(mrp->p_port) == p ||
rcu_access_pointer(mrp->s_port) == p ||
rcu_access_pointer(mrp->i_port) == p) {
@@ -450,10 +450,10 @@ static void br_mrp_del_impl(struct net_bridge *br, struct br_mrp *mrp)
rcu_assign_pointer(mrp->i_port, NULL);
}
- list_del_rcu(&mrp->list);
+ hlist_del_rcu(&mrp->list);
kfree_rcu(mrp, rcu);
- if (list_empty(&br->mrp_list))
+ if (hlist_empty(&br->mrp_list))
br_del_frame(br, &mrp_frame_type);
}
@@ -503,12 +503,12 @@ int br_mrp_add(struct net_bridge *br, struct br_mrp_instance *instance)
spin_unlock_bh(&br->lock);
rcu_assign_pointer(mrp->s_port, p);
- if (list_empty(&br->mrp_list))
+ if (hlist_empty(&br->mrp_list))
br_add_frame(br, &mrp_frame_type);
INIT_DELAYED_WORK(&mrp->test_work, br_mrp_test_work_expired);
INIT_DELAYED_WORK(&mrp->in_test_work, br_mrp_in_test_work_expired);
- list_add_tail_rcu(&mrp->list, &br->mrp_list);
+ hlist_add_tail_rcu(&mrp->list, &br->mrp_list);
err = br_mrp_switchdev_add(br, mrp);
if (err)
@@ -1198,5 +1198,5 @@ static int br_mrp_process(struct net_bridge_port *p, struct sk_buff *skb)
bool br_mrp_enabled(struct net_bridge *br)
{
- return !list_empty(&br->mrp_list);
+ return !hlist_empty(&br->mrp_list);
}
diff --git a/net/bridge/br_mrp_netlink.c b/net/bridge/br_mrp_netlink.c
index 2a2fdf3500c5b..ce6f63c77cc0a 100644
--- a/net/bridge/br_mrp_netlink.c
+++ b/net/bridge/br_mrp_netlink.c
@@ -453,7 +453,7 @@ int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
if (!mrp_tb)
return -EMSGSIZE;
- list_for_each_entry_rcu(mrp, &br->mrp_list, list) {
+ hlist_for_each_entry_rcu(mrp, &br->mrp_list, list) {
struct net_bridge_port *p;
tb = nla_nest_start_noflag(skb, IFLA_BRIDGE_MRP_INFO);
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 891f3b05ffa41..6f2818cb2ac02 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -482,7 +482,7 @@ struct net_bridge {
struct hlist_head fdb_list;
#if IS_ENABLED(CONFIG_BRIDGE_MRP)
- struct list_head mrp_list;
+ struct hlist_head mrp_list;
#endif
#if IS_ENABLED(CONFIG_BRIDGE_CFM)
struct hlist_head mep_list;
diff --git a/net/bridge/br_private_mrp.h b/net/bridge/br_private_mrp.h
index af0e9eff65493..1883118aae55b 100644
--- a/net/bridge/br_private_mrp.h
+++ b/net/bridge/br_private_mrp.h
@@ -8,7 +8,7 @@
struct br_mrp {
/* list of mrp instances */
- struct list_head list;
+ struct hlist_node list;
struct net_bridge_port __rcu *p_port;
struct net_bridge_port __rcu *s_port;
--
2.27.0
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