Re: [PATCH net-next V6 02/14] bridge: Add vlan filtering infrastructure

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On 01/20/2013 04:38 PM, Shmulik Ladkani wrote:
Hi Vlad,

On Wed, 16 Jan 2013 13:17:57 -0500 Vlad Yasevich <vyasevic@xxxxxxxxxx> wrote:
@@ -156,6 +183,7 @@ struct net_bridge_port
  #ifdef CONFIG_NET_POLL_CONTROLLER
  	struct netpoll			*np;
  #endif
+	struct net_port_vlans		vlan_info;

(here and at 'struct net_bridge' as well)

Not sure what the policy is; Isn't it preferred to enclose the new
fields under CONFIG_BRIDGE_VLAN_FILTERING?

Good catch.  Missed this one.


+static inline struct net_bridge *vlans_to_bridge(struct net_port_vlans *vlans)
+{
+	struct net_bridge *br;
+
+	if (!vlans->port_idx)
+		br = container_of((vlans), struct net_bridge, vlan_info);
+	else
+		br = vlans_to_port(vlans)->br;
+
+	return br;
+}

Guess it would simplify things if the bridge "master port" had an 'nbp'
representation of its own ;-)

Yes that would simplify things for this case, but it will also add a lot of state that's not necessary. I considered doing this, but the master device doesn't really act as port in on things, just some.


+extern struct net_bridge_vlan *br_vlan_find(struct net_bridge *br, u16 vid);

Seems 'br_vlan_find' can be declared static within br_vlan.c.

Will check.


+extern void br_vlan_flush(struct net_bridge *br);

According to your preference, consider s/br_vlan_flush/br_vlans_flush/
since it better suggest acting on all bridge's vlans.

+extern void nbp_vlan_flush(struct net_port_vlans *vlans);

According to your preference, consider s/nbp_vlan_flush/nbp_vlans_flush/
since it better suggest acting on all port's vlans.

+void br_vlan_flush(struct net_bridge *br)
+{
+	struct net_bridge_vlan *vlan;
+	struct hlist_node *node;
+	struct hlist_node *tmp;
+	int i;
+
+	nbp_vlan_flush(&br->vlan_info);
+
+	/* Make sure that there are no vlans left in the bridge after
+	* all the ports have been removed.
+	*/

Improper indent.

will fix


+	for (i = 0; i < BR_VID_HASH_SIZE; i++) {
+		hlist_for_each_entry_safe(vlan, node, tmp,
+					  &br->vlan_hlist[i], hlist) {
+			br_vlan_del(vlan);

Can there be any vlans left at that point? Shouldn't del_nbp() on all
ports take care of that?

I think this function might have been a leftover from prior series when
bridge didn't have its vlan list. With the new series, I don't this it is needed. I'll double-check.

Thanks
-vlad

Also, if there _were_ any vlans left (whose bitmap isn't cleared),
'br_vlan_del' won't do a thing.
Am I missing something?

Regards,
Shmulik




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