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Date: Wed, 20 Sep 2023 13:43:39 +0200
From: Lukasz Majewski <lukma@...x.de>
To: Tristram.Ha@...rochip.com,
Eric Dumazet <edumazet@...gle.com>,
Andrew Lunn <andrew@...n.ch>,
davem@...emloft.net,
Woojung Huh <woojung.huh@...rochip.com>,
Vladimir Oltean <olteanv@...il.com>,
Oleksij Rempel <o.rempel@...gutronix.de>
Cc: Florian Fainelli <f.fainelli@...il.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
UNGLinuxDriver@...rochip.com,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
Vladimir Oltean <vladimir.oltean@....com>,
Lukasz Majewski <lukma@...x.de>
Subject: [PATCH v5 net-next 1/5] net: dsa: propagate extack to ds->ops->port_hsr_join()
From: Vladimir Oltean <vladimir.oltean@....com>
Drivers can provide meaningful error messages which state a reason why
they can't perform an offload, and dsa_slave_changeupper() already has
the infrastructure to propagate these over netlink rather than printing
to the kernel log. So pass the extack argument and modify the xrs700x
driver's port_hsr_join() prototype.
Also take the opportunity and use the extack for the 2 -EOPNOTSUPP cases
from xrs700x_hsr_join().
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
Signed-off-by: Lukasz Majewski <lukma@...x.de>
---
Changes for v5:
- New patch
---
drivers/net/dsa/xrs700x/xrs700x.c | 18 ++++++++++++------
include/net/dsa.h | 3 ++-
net/dsa/port.c | 5 +++--
net/dsa/port.h | 3 ++-
net/dsa/slave.c | 2 +-
5 files changed, 20 insertions(+), 11 deletions(-)
diff --git a/drivers/net/dsa/xrs700x/xrs700x.c b/drivers/net/dsa/xrs700x/xrs700x.c
index 753fef757f11..5b02e9e426fd 100644
--- a/drivers/net/dsa/xrs700x/xrs700x.c
+++ b/drivers/net/dsa/xrs700x/xrs700x.c
@@ -548,7 +548,8 @@ static void xrs700x_bridge_leave(struct dsa_switch *ds, int port,
}
static int xrs700x_hsr_join(struct dsa_switch *ds, int port,
- struct net_device *hsr)
+ struct net_device *hsr,
+ struct netlink_ext_ack *extack)
{
unsigned int val = XRS_HSR_CFG_HSR_PRP;
struct dsa_port *partner = NULL, *dp;
@@ -562,16 +563,21 @@ static int xrs700x_hsr_join(struct dsa_switch *ds, int port,
if (ret)
return ret;
- /* Only ports 1 and 2 can be HSR/PRP redundant ports. */
- if (port != 1 && port != 2)
+ if (port != 1 && port != 2) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Only ports 1 and 2 can offload HSR/PRP");
return -EOPNOTSUPP;
+ }
- if (ver == HSR_V1)
+ if (ver == HSR_V1) {
val |= XRS_HSR_CFG_HSR;
- else if (ver == PRP_V1)
+ } else if (ver == PRP_V1) {
val |= XRS_HSR_CFG_PRP;
- else
+ } else {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Only HSR v1 and PRP v1 can be offloaded");
return -EOPNOTSUPP;
+ }
dsa_hsr_foreach_port(dp, ds, hsr) {
if (dp->index != port) {
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 0b9c6aa27047..426724808e76 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -1198,7 +1198,8 @@ struct dsa_switch_ops {
* HSR integration
*/
int (*port_hsr_join)(struct dsa_switch *ds, int port,
- struct net_device *hsr);
+ struct net_device *hsr,
+ struct netlink_ext_ack *extack);
int (*port_hsr_leave)(struct dsa_switch *ds, int port,
struct net_device *hsr);
diff --git a/net/dsa/port.c b/net/dsa/port.c
index 37ab238e8304..5f01bd4f9dec 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -2024,7 +2024,8 @@ void dsa_shared_port_link_unregister_of(struct dsa_port *dp)
dsa_shared_port_setup_phy_of(dp, false);
}
-int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr)
+int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr,
+ struct netlink_ext_ack *extack)
{
struct dsa_switch *ds = dp->ds;
int err;
@@ -2034,7 +2035,7 @@ int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr)
dp->hsr_dev = hsr;
- err = ds->ops->port_hsr_join(ds, dp->index, hsr);
+ err = ds->ops->port_hsr_join(ds, dp->index, hsr, extack);
if (err)
dp->hsr_dev = NULL;
diff --git a/net/dsa/port.h b/net/dsa/port.h
index dc812512fd0e..334879964e2c 100644
--- a/net/dsa/port.h
+++ b/net/dsa/port.h
@@ -103,7 +103,8 @@ int dsa_port_phylink_create(struct dsa_port *dp);
void dsa_port_phylink_destroy(struct dsa_port *dp);
int dsa_shared_port_link_register_of(struct dsa_port *dp);
void dsa_shared_port_link_unregister_of(struct dsa_port *dp);
-int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr);
+int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr,
+ struct netlink_ext_ack *extack);
void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr);
int dsa_port_tag_8021q_vlan_add(struct dsa_port *dp, u16 vid, bool broadcast);
void dsa_port_tag_8021q_vlan_del(struct dsa_port *dp, u16 vid, bool broadcast);
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 48db91b33390..2b3d89b77121 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2862,7 +2862,7 @@ static int dsa_slave_changeupper(struct net_device *dev,
}
} else if (is_hsr_master(info->upper_dev)) {
if (info->linking) {
- err = dsa_port_hsr_join(dp, info->upper_dev);
+ err = dsa_port_hsr_join(dp, info->upper_dev, extack);
if (err == -EOPNOTSUPP) {
NL_SET_ERR_MSG_WEAK_MOD(extack,
"Offloading not supported");
--
2.20.1
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