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bridge: vlan: move pvid inside net_bridge_vlan_group

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One obvious way to converge more code (which was also used by the
previous vlan code) is to move pvid inside net_bridge_vlan_group. This
allows us to simplify some and remove other port-specific functions.
Also gives us the ability to simply pass the vlan group and use all of the
contained information.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov
2015-09-30 20:16:53 +02:00
committed by David S. Miller
parent 468e794458
commit 77751ee8ae
5 changed files with 75 additions and 118 deletions
Download Patch File Download Diff File Expand all files Collapse all files

103
net/bridge/br_vlan.c
View File

@@ -31,37 +31,37 @@ static struct net_bridge_vlan *br_vlan_lookup(struct rhashtable *tbl, u16 vid)
return rhashtable_lookup_fast(tbl, &vid, br_vlan_rht_params);
}
static void __vlan_add_pvid(u16 *pvid, u16 vid)
static void __vlan_add_pvid(struct net_bridge_vlan_group *vg, u16 vid)
{
if (*pvid == vid)
if (vg->pvid == vid)
return;
smp_wmb();
*pvid = vid;
vg->pvid = vid;
}
static void __vlan_delete_pvid(u16 *pvid, u16 vid)
static void __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid)
{
if (*pvid != vid)
if (vg->pvid != vid)
return;
smp_wmb();
*pvid = 0;
vg->pvid = 0;
}
static void __vlan_add_flags(struct net_bridge_vlan *v, u16 flags)
{
if (flags & BRIDGE_VLAN_INFO_PVID) {
if (br_vlan_is_master(v))
__vlan_add_pvid(&v->br->pvid, v->vid);
else
__vlan_add_pvid(&v->port->pvid, v->vid);
} else {
if (br_vlan_is_master(v))
__vlan_delete_pvid(&v->br->pvid, v->vid);
else
__vlan_delete_pvid(&v->port->pvid, v->vid);
}
struct net_bridge_vlan_group *vg;
if (br_vlan_is_master(v))
vg = v->br->vlgrp;
else
vg = v->port->vlgrp;
if (flags & BRIDGE_VLAN_INFO_PVID)
__vlan_add_pvid(vg, v->vid);
else
__vlan_delete_pvid(vg, v->vid);
if (flags & BRIDGE_VLAN_INFO_UNTAGGED)
v->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
@@ -249,25 +249,22 @@ out_filt:
static int __vlan_del(struct net_bridge_vlan *v)
{
struct net_bridge_vlan *masterv = v;
struct net_bridge_vlan_group *vg;
struct net_bridge_port *p = NULL;
struct net_bridge *br;
int err = 0;
struct rhashtable *tbl;
u16 *pvid;
if (br_vlan_is_master(v)) {
br = v->br;
tbl = &v->br->vlgrp->vlan_hash;
pvid = &v->br->pvid;
vg = v->br->vlgrp;
} else {
p = v->port;
br = p->br;
tbl = &p->vlgrp->vlan_hash;
vg = v->port->vlgrp;
masterv = v->brvlan;
pvid = &p->pvid;
}
__vlan_delete_pvid(pvid, v->vid);
__vlan_delete_pvid(vg, v->vid);
if (p) {
err = __vlan_vid_del(p->dev, p->br, v->vid);
if (err)
@@ -284,7 +281,8 @@ static int __vlan_del(struct net_bridge_vlan *v)
}
if (masterv != v) {
rhashtable_remove_fast(tbl, &v->vnode, br_vlan_rht_params);
rhashtable_remove_fast(&vg->vlan_hash, &v->vnode,
br_vlan_rht_params);
__vlan_del_list(v);
kfree_rcu(v, rcu);
}
@@ -299,11 +297,11 @@ out:
return err;
}
static void __vlan_flush(struct net_bridge_vlan_group *vlgrp, u16 *pvid)
static void __vlan_flush(struct net_bridge_vlan_group *vlgrp)
{
struct net_bridge_vlan *vlan, *tmp;
__vlan_delete_pvid(pvid, *pvid);
__vlan_delete_pvid(vlgrp, vlgrp->pvid);
list_for_each_entry_safe(vlan, tmp, &vlgrp->vlan_list, vlist)
__vlan_del(vlan);
rhashtable_destroy(&vlgrp->vlan_hash);
@@ -348,7 +346,7 @@ out:
}
/* Called under RCU */
static bool __allowed_ingress(struct rhashtable *tbl, u16 pvid, __be16 proto,
static bool __allowed_ingress(struct net_bridge_vlan_group *vg, __be16 proto,
struct sk_buff *skb, u16 *vid)
{
const struct net_bridge_vlan *v;
@@ -389,6 +387,8 @@ static bool __allowed_ingress(struct rhashtable *tbl, u16 pvid, __be16 proto,
}
if (!*vid) {
u16 pvid = br_get_pvid(vg);
/* Frame had a tag with VID 0 or did not have a tag.
* See if pvid is set on this port. That tells us which
* vlan untagged or priority-tagged traffic belongs to.
@@ -415,7 +415,7 @@ static bool __allowed_ingress(struct rhashtable *tbl, u16 pvid, __be16 proto,
}
/* Frame had a valid vlan tag. See if vlan is allowed */
v = br_vlan_lookup(tbl, *vid);
v = br_vlan_find(vg, *vid);
if (v && br_vlan_should_use(v))
return true;
drop:
@@ -423,7 +423,9 @@ drop:
return false;
}
bool br_allowed_ingress(struct net_bridge *br, struct sk_buff *skb, u16 *vid)
bool br_allowed_ingress(const struct net_bridge *br,
struct net_bridge_vlan_group *vg, struct sk_buff *skb,
u16 *vid)
{
/* If VLAN filtering is disabled on the bridge, all packets are
* permitted.
@@ -433,25 +435,7 @@ bool br_allowed_ingress(struct net_bridge *br, struct sk_buff *skb, u16 *vid)
return true;
}
return __allowed_ingress(&br->vlgrp->vlan_hash, br->pvid,
br->vlan_proto, skb, vid);
}
bool nbp_allowed_ingress(struct net_bridge_port *p, struct sk_buff *skb,
u16 *vid)
{
struct net_bridge *br = p->br;
/* If VLAN filtering is disabled on the bridge, all packets are
* permitted.
*/
if (!br->vlan_enabled) {
BR_INPUT_SKB_CB(skb)->vlan_filtered = false;
return true;
}
return __allowed_ingress(&p->vlgrp->vlan_hash, p->pvid, br->vlan_proto,
skb, vid);
return __allowed_ingress(vg, br->vlan_proto, skb, vid);
}
/* Called under RCU. */
@@ -491,14 +475,14 @@ bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid)
*vid = 0;
if (!*vid) {
*vid = nbp_get_pvid(p);
*vid = br_get_pvid(vg);
if (!*vid)
return false;
return true;
}
if (br_vlan_find(p->vlgrp, *vid))
if (br_vlan_find(vg, *vid))
return true;
return false;
@@ -574,7 +558,7 @@ void br_vlan_flush(struct net_bridge *br)
{
ASSERT_RTNL();
__vlan_flush(br_vlan_group(br), &br->pvid);
__vlan_flush(br_vlan_group(br));
}
struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid)
@@ -695,12 +679,11 @@ int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
return err;
}
static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 pvid,
u16 vid)
static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid)
{
struct net_bridge_vlan *v;
if (vid != pvid)
if (vid != vg->pvid)
return false;
v = br_vlan_lookup(&vg->vlan_hash, vid);
@@ -719,11 +702,11 @@ static void br_vlan_disable_default_pvid(struct net_bridge *br)
/* Disable default_pvid on all ports where it is still
* configured.
*/
if (vlan_default_pvid(br->vlgrp, br->pvid, pvid))
if (vlan_default_pvid(br->vlgrp, pvid))
br_vlan_delete(br, pvid);
list_for_each_entry(p, &br->port_list, list) {
if (vlan_default_pvid(p->vlgrp, p->pvid, pvid))
if (vlan_default_pvid(p->vlgrp, pvid))
nbp_vlan_delete(p, pvid);
}
@@ -749,7 +732,7 @@ static int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
* user configuration.
*/
pvent = br_vlan_find(br->vlgrp, pvid);
if ((!old_pvid || vlan_default_pvid(br->vlgrp, br->pvid, old_pvid)) &&
if ((!old_pvid || vlan_default_pvid(br->vlgrp, old_pvid)) &&
(!pvent || !br_vlan_should_use(pvent))) {
err = br_vlan_add(br, pvid,
BRIDGE_VLAN_INFO_PVID |
@@ -766,7 +749,7 @@ static int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
* user configuration.
*/
if ((old_pvid &&
!vlan_default_pvid(p->vlgrp, p->pvid, old_pvid)) ||
!vlan_default_pvid(p->vlgrp, old_pvid)) ||
br_vlan_find(p->vlgrp, pvid))
continue;
@@ -955,5 +938,5 @@ void nbp_vlan_flush(struct net_bridge_port *port)
list_for_each_entry(vlan, &port->vlgrp->vlan_list, vlist)
vlan_vid_del(port->dev, port->br->vlan_proto, vlan->vid);
__vlan_flush(nbp_vlan_group(port), &port->pvid);
__vlan_flush(nbp_vlan_group(port));
}