net: bridge: fdb: convert is_local to bitops
The patch adds a new fdb flags field in the hole between the two cache
lines and uses it to convert is_local to bitops.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index b1d3248..e67d5eb 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -250,7 +250,8 @@ void br_fdb_find_delete_local(struct net_bridge *br,
spin_lock_bh(&br->hash_lock);
f = br_fdb_find(br, addr, vid);
- if (f && f->is_local && !f->added_by_user && f->dst == p)
+ if (f && test_bit(BR_FDB_LOCAL, &f->flags) &&
+ !f->added_by_user && f->dst == p)
fdb_delete_local(br, p, f);
spin_unlock_bh(&br->hash_lock);
}
@@ -265,7 +266,8 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr)
spin_lock_bh(&br->hash_lock);
vg = nbp_vlan_group(p);
hlist_for_each_entry(f, &br->fdb_list, fdb_node) {
- if (f->dst == p && f->is_local && !f->added_by_user) {
+ if (f->dst == p && test_bit(BR_FDB_LOCAL, &f->flags) &&
+ !f->added_by_user) {
/* delete old one */
fdb_delete_local(br, p, f);
@@ -306,7 +308,8 @@ void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr)
/* If old entry was unassociated with any port, then delete it. */
f = br_fdb_find(br, br->dev->dev_addr, 0);
- if (f && f->is_local && !f->dst && !f->added_by_user)
+ if (f && test_bit(BR_FDB_LOCAL, &f->flags) &&
+ !f->dst && !f->added_by_user)
fdb_delete_local(br, NULL, f);
fdb_insert(br, NULL, newaddr, 0);
@@ -321,7 +324,8 @@ void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr)
if (!br_vlan_should_use(v))
continue;
f = br_fdb_find(br, br->dev->dev_addr, v->vid);
- if (f && f->is_local && !f->dst && !f->added_by_user)
+ if (f && test_bit(BR_FDB_LOCAL, &f->flags) &&
+ !f->dst && !f->added_by_user)
fdb_delete_local(br, NULL, f);
fdb_insert(br, NULL, newaddr, v->vid);
}
@@ -400,7 +404,7 @@ void br_fdb_delete_by_port(struct net_bridge *br,
if (f->is_static || (vid && f->key.vlan_id != vid))
continue;
- if (f->is_local)
+ if (test_bit(BR_FDB_LOCAL, &f->flags))
fdb_delete_local(br, p, f);
else
fdb_delete(br, f, true);
@@ -469,7 +473,7 @@ int br_fdb_fillbuf(struct net_bridge *br, void *buf,
fe->port_no = f->dst->port_no;
fe->port_hi = f->dst->port_no >> 8;
- fe->is_local = f->is_local;
+ fe->is_local = test_bit(BR_FDB_LOCAL, &f->flags);
if (!f->is_static)
fe->ageing_timer_value = jiffies_delta_to_clock_t(jiffies - f->updated);
++fe;
@@ -494,7 +498,9 @@ static struct net_bridge_fdb_entry *fdb_create(struct net_bridge *br,
memcpy(fdb->key.addr.addr, addr, ETH_ALEN);
fdb->dst = source;
fdb->key.vlan_id = vid;
- fdb->is_local = is_local;
+ fdb->flags = 0;
+ if (is_local)
+ set_bit(BR_FDB_LOCAL, &fdb->flags);
fdb->is_static = is_static;
fdb->added_by_user = 0;
fdb->added_by_external_learn = 0;
@@ -526,7 +532,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
/* it is okay to have multiple ports with same
* address, just use the first one.
*/
- if (fdb->is_local)
+ if (test_bit(BR_FDB_LOCAL, &fdb->flags))
return 0;
br_warn(br, "adding interface %s with same address as a received packet (addr:%pM, vlan:%u)\n",
source ? source->dev->name : br->dev->name, addr, vid);
@@ -572,7 +578,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
fdb = fdb_find_rcu(&br->fdb_hash_tbl, addr, vid);
if (likely(fdb)) {
/* attempt to update an entry for a local interface */
- if (unlikely(fdb->is_local)) {
+ if (unlikely(test_bit(BR_FDB_LOCAL, &fdb->flags))) {
if (net_ratelimit())
br_warn(br, "received packet on %s with own address as source address (addr:%pM, vlan:%u)\n",
source->dev->name, addr, vid);
@@ -616,7 +622,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
static int fdb_to_nud(const struct net_bridge *br,
const struct net_bridge_fdb_entry *fdb)
{
- if (fdb->is_local)
+ if (test_bit(BR_FDB_LOCAL, &fdb->flags))
return NUD_PERMANENT;
else if (fdb->is_static)
return NUD_NOARP;
@@ -840,19 +846,19 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
if (fdb_to_nud(br, fdb) != state) {
if (state & NUD_PERMANENT) {
- fdb->is_local = 1;
+ set_bit(BR_FDB_LOCAL, &fdb->flags);
if (!fdb->is_static) {
fdb->is_static = 1;
fdb_add_hw_addr(br, addr);
}
} else if (state & NUD_NOARP) {
- fdb->is_local = 0;
+ clear_bit(BR_FDB_LOCAL, &fdb->flags);
if (!fdb->is_static) {
fdb->is_static = 1;
fdb_add_hw_addr(br, addr);
}
} else {
- fdb->is_local = 0;
+ clear_bit(BR_FDB_LOCAL, &fdb->flags);
if (fdb->is_static) {
fdb->is_static = 0;
fdb_del_hw_addr(br, addr);