mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 17:18:59 +00:00
ddcebda08b
Add kernel tag that introduced the patch on backport patch. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
119 lines
3.2 KiB
Diff
119 lines
3.2 KiB
Diff
From 1e3f407f3cacc5dcfe27166c412ed9bc263d82bf Mon Sep 17 00:00:00 2001
|
|
From: Vladimir Oltean <vladimir.oltean@nxp.com>
|
|
Date: Thu, 6 Jan 2022 01:11:16 +0200
|
|
Subject: [PATCH 5/6] net: dsa: first set up shared ports, then non-shared
|
|
ports
|
|
|
|
After commit a57d8c217aad ("net: dsa: flush switchdev workqueue before
|
|
tearing down CPU/DSA ports"), the port setup and teardown procedure
|
|
became asymmetric.
|
|
|
|
The fact of the matter is that user ports need the shared ports to be up
|
|
before they can be used for CPU-initiated termination. And since we
|
|
register net devices for the user ports, those won't be functional until
|
|
we also call the setup for the shared (CPU, DSA) ports. But we may do
|
|
that later, depending on the port numbering scheme of the hardware we
|
|
are dealing with.
|
|
|
|
It just makes sense that all shared ports are brought up before any user
|
|
port is. I can't pinpoint any issue due to the current behavior, but
|
|
let's change it nonetheless, for consistency's sake.
|
|
|
|
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
---
|
|
net/dsa/dsa2.c | 50 +++++++++++++++++++++++++++++++++++++-------------
|
|
1 file changed, 37 insertions(+), 13 deletions(-)
|
|
|
|
--- a/net/dsa/dsa2.c
|
|
+++ b/net/dsa/dsa2.c
|
|
@@ -999,23 +999,28 @@ static void dsa_tree_teardown_switches(s
|
|
dsa_switch_teardown(dp->ds);
|
|
}
|
|
|
|
-static int dsa_tree_setup_switches(struct dsa_switch_tree *dst)
|
|
+/* Bring shared ports up first, then non-shared ports */
|
|
+static int dsa_tree_setup_ports(struct dsa_switch_tree *dst)
|
|
{
|
|
struct dsa_port *dp;
|
|
- int err;
|
|
+ int err = 0;
|
|
|
|
list_for_each_entry(dp, &dst->ports, list) {
|
|
- err = dsa_switch_setup(dp->ds);
|
|
- if (err)
|
|
- goto teardown;
|
|
+ if (dsa_port_is_dsa(dp) || dsa_port_is_cpu(dp)) {
|
|
+ err = dsa_port_setup(dp);
|
|
+ if (err)
|
|
+ goto teardown;
|
|
+ }
|
|
}
|
|
|
|
list_for_each_entry(dp, &dst->ports, list) {
|
|
- err = dsa_port_setup(dp);
|
|
- if (err) {
|
|
- err = dsa_port_reinit_as_unused(dp);
|
|
- if (err)
|
|
- goto teardown;
|
|
+ if (dsa_port_is_user(dp) || dsa_port_is_unused(dp)) {
|
|
+ err = dsa_port_setup(dp);
|
|
+ if (err) {
|
|
+ err = dsa_port_reinit_as_unused(dp);
|
|
+ if (err)
|
|
+ goto teardown;
|
|
+ }
|
|
}
|
|
}
|
|
|
|
@@ -1024,7 +1029,21 @@ static int dsa_tree_setup_switches(struc
|
|
teardown:
|
|
dsa_tree_teardown_ports(dst);
|
|
|
|
- dsa_tree_teardown_switches(dst);
|
|
+ return err;
|
|
+}
|
|
+
|
|
+static int dsa_tree_setup_switches(struct dsa_switch_tree *dst)
|
|
+{
|
|
+ struct dsa_port *dp;
|
|
+ int err = 0;
|
|
+
|
|
+ list_for_each_entry(dp, &dst->ports, list) {
|
|
+ err = dsa_switch_setup(dp->ds);
|
|
+ if (err) {
|
|
+ dsa_tree_teardown_switches(dst);
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
|
|
return err;
|
|
}
|
|
@@ -1111,10 +1130,14 @@ static int dsa_tree_setup(struct dsa_swi
|
|
if (err)
|
|
goto teardown_cpu_ports;
|
|
|
|
- err = dsa_tree_setup_master(dst);
|
|
+ err = dsa_tree_setup_ports(dst);
|
|
if (err)
|
|
goto teardown_switches;
|
|
|
|
+ err = dsa_tree_setup_master(dst);
|
|
+ if (err)
|
|
+ goto teardown_ports;
|
|
+
|
|
err = dsa_tree_setup_lags(dst);
|
|
if (err)
|
|
goto teardown_master;
|
|
@@ -1127,8 +1150,9 @@ static int dsa_tree_setup(struct dsa_swi
|
|
|
|
teardown_master:
|
|
dsa_tree_teardown_master(dst);
|
|
-teardown_switches:
|
|
+teardown_ports:
|
|
dsa_tree_teardown_ports(dst);
|
|
+teardown_switches:
|
|
dsa_tree_teardown_switches(dst);
|
|
teardown_cpu_ports:
|
|
dsa_tree_teardown_cpu_ports(dst);
|