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bridge: Use the correct bit length for bitmap functions in the VLAN code

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The VLAN code needs to know the length of the per-port VLAN bitmap to
perform its most basic operations (retrieving VLAN informations, removing
VLANs, forwarding database manipulation, etc). Unfortunately, in the
current implementation we are using a macro that indicates the bitmap
size in longs in places where the size in bits is expected, which in
some cases can cause what appear to be random failures.
Use the correct macro.

Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Toshiaki Makita 2013-08-20 17:10:18 +09:00 committed by David S. Miller
parent 5c751c9344
commit ef40b7ef18
3 changed files with 9 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
net/bridge/br_fdb.c
View file

@ -161,7 +161,7 @@ void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr)
if (!pv)
return;
for_each_set_bit_from(vid, pv->vlan_bitmap, BR_VLAN_BITMAP_LEN) {
for_each_set_bit_from(vid, pv->vlan_bitmap, VLAN_N_VID) {
f = __br_fdb_get(br, br->dev->dev_addr, vid);
if (f && f->is_local && !f->dst)
fdb_delete(br, f);
@ -730,7 +730,7 @@ int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
/* VID was specified, so use it. */
err = __br_fdb_add(ndm, p, addr, nlh_flags, vid);
} else {
if (!pv || bitmap_empty(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN)) {
if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID)) {
err = __br_fdb_add(ndm, p, addr, nlh_flags, 0);
goto out;
}
@ -739,7 +739,7 @@ int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
* specify a VLAN. To be nice, add/update entry for every
* vlan on this port.
*/
for_each_set_bit(vid, pv->vlan_bitmap, BR_VLAN_BITMAP_LEN) {
for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
err = __br_fdb_add(ndm, p, addr, nlh_flags, vid);
if (err)
goto out;
@ -817,7 +817,7 @@ int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
err = __br_fdb_delete(p, addr, vid);
} else {
if (!pv || bitmap_empty(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN)) {
if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID)) {
err = __br_fdb_delete(p, addr, 0);
goto out;
}
@ -827,7 +827,7 @@ int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
* vlan on this port.
*/
err = -ENOENT;
for_each_set_bit(vid, pv->vlan_bitmap, BR_VLAN_BITMAP_LEN) {
for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
err &= __br_fdb_delete(p, addr, vid);
}
}

4
net/bridge/br_netlink.c
View file

@ -132,7 +132,7 @@ static int br_fill_ifinfo(struct sk_buff *skb,
else
pv = br_get_vlan_info(br);
if (!pv || bitmap_empty(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN))
if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID))
goto done;
af = nla_nest_start(skb, IFLA_AF_SPEC);
@ -140,7 +140,7 @@ static int br_fill_ifinfo(struct sk_buff *skb,
goto nla_put_failure;
pvid = br_get_pvid(pv);
for_each_set_bit(vid, pv->vlan_bitmap, BR_VLAN_BITMAP_LEN) {
for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
vinfo.vid = vid;
vinfo.flags = 0;
if (vid == pvid)

4
net/bridge/br_vlan.c
View file

@ -108,7 +108,7 @@ static int __vlan_del(struct net_port_vlans *v, u16 vid)
clear_bit(vid, v->vlan_bitmap);
v->num_vlans--;
if (bitmap_empty(v->vlan_bitmap, BR_VLAN_BITMAP_LEN)) {
if (bitmap_empty(v->vlan_bitmap, VLAN_N_VID)) {
if (v->port_idx)
rcu_assign_pointer(v->parent.port->vlan_info, NULL);
else
@ -122,7 +122,7 @@ static void __vlan_flush(struct net_port_vlans *v)
{
smp_wmb();
v->pvid = 0;
bitmap_zero(v->vlan_bitmap, BR_VLAN_BITMAP_LEN);
bitmap_zero(v->vlan_bitmap, VLAN_N_VID);
if (v->port_idx)
rcu_assign_pointer(v->parent.port->vlan_info, NULL);
else