net: dsa: add ports list in the switch fabric
Add a list of switch ports within the switch fabric. This will help the
lookup of a port inside the whole fabric, and it is the first step
towards supporting multiple CPU ports, before deprecating the usage of
the unique dst->cpu_dp pointer.
In preparation for a future allocation of the dsa_port structures,
return -ENOMEM in case no structure is returned, even though this
error cannot be reached yet.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 2e4fe2f..6ff6dfc 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -125,6 +125,9 @@ struct dsa_switch_tree {
*/
struct dsa_port *cpu_dp;
+ /* List of switch ports */
+ struct list_head ports;
+
/*
* Data for the individual switch chips.
*/
@@ -195,6 +198,8 @@ struct dsa_port {
struct work_struct xmit_work;
struct sk_buff_head xmit_queue;
+ struct list_head list;
+
/*
* Give the switch driver somewhere to hang its per-port private data
* structures (accessible from the tagger).
