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Message-ID: <20240502122922.28139-2-kabel@kernel.org>
Date: Thu, 2 May 2024 14:29:21 +0200
From: Marek Behún <kabel@...nel.org>
To: netdev@...r.kernel.org,
Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>
Cc: Marek Behún <kabel@...nel.org>
Subject: [PATCH net-next v2 1/2] net: dsa: deduplicate code adding / deleting the port address to fdb
The sequence
if (dsa_switch_supports_uc_filtering(ds))
dsa_port_standalone_host_fdb_add(dp, addr, 0);
if (!ether_addr_equal(addr, conduit->dev_addr))
dev_uc_add(conduit, addr);
is executed both in dsa_user_open() and dsa_user_set_mac_addr().
Its reverse is executed both in dsa_user_close() and
dsa_user_set_mac_addr().
Refactor these sequences into new functions dsa_user_host_uc_install()
and dsa_user_host_uc_uninstall().
Signed-off-by: Marek Behún <kabel@...nel.org>
---
net/dsa/user.c | 91 ++++++++++++++++++++++++++------------------------
1 file changed, 47 insertions(+), 44 deletions(-)
diff --git a/net/dsa/user.c b/net/dsa/user.c
index c94b868855aa..b1d8d1827f91 100644
--- a/net/dsa/user.c
+++ b/net/dsa/user.c
@@ -355,60 +355,82 @@ static int dsa_user_get_iflink(const struct net_device *dev)
return READ_ONCE(dsa_user_to_conduit(dev)->ifindex);
}
-static int dsa_user_open(struct net_device *dev)
+static int dsa_user_host_uc_install(struct net_device *dev, const u8 *addr)
{
struct net_device *conduit = dsa_user_to_conduit(dev);
struct dsa_port *dp = dsa_user_to_port(dev);
struct dsa_switch *ds = dp->ds;
int err;
- err = dev_open(conduit, NULL);
- if (err < 0) {
- netdev_err(dev, "failed to open conduit %s\n", conduit->name);
- goto out;
- }
-
if (dsa_switch_supports_uc_filtering(ds)) {
- err = dsa_port_standalone_host_fdb_add(dp, dev->dev_addr, 0);
+ err = dsa_port_standalone_host_fdb_add(dp, addr, 0);
if (err)
goto out;
}
- if (!ether_addr_equal(dev->dev_addr, conduit->dev_addr)) {
- err = dev_uc_add(conduit, dev->dev_addr);
+ if (!ether_addr_equal(addr, conduit->dev_addr)) {
+ err = dev_uc_add(conduit, addr);
if (err < 0)
goto del_host_addr;
}
- err = dsa_port_enable_rt(dp, dev->phydev);
- if (err)
- goto del_unicast;
-
return 0;
-del_unicast:
- if (!ether_addr_equal(dev->dev_addr, conduit->dev_addr))
- dev_uc_del(conduit, dev->dev_addr);
del_host_addr:
if (dsa_switch_supports_uc_filtering(ds))
- dsa_port_standalone_host_fdb_del(dp, dev->dev_addr, 0);
+ dsa_port_standalone_host_fdb_del(dp, addr, 0);
out:
return err;
}
-static int dsa_user_close(struct net_device *dev)
+static void dsa_user_host_uc_uninstall(struct net_device *dev)
{
struct net_device *conduit = dsa_user_to_conduit(dev);
struct dsa_port *dp = dsa_user_to_port(dev);
struct dsa_switch *ds = dp->ds;
- dsa_port_disable_rt(dp);
-
if (!ether_addr_equal(dev->dev_addr, conduit->dev_addr))
dev_uc_del(conduit, dev->dev_addr);
if (dsa_switch_supports_uc_filtering(ds))
dsa_port_standalone_host_fdb_del(dp, dev->dev_addr, 0);
+}
+
+static int dsa_user_open(struct net_device *dev)
+{
+ struct net_device *conduit = dsa_user_to_conduit(dev);
+ struct dsa_port *dp = dsa_user_to_port(dev);
+ int err;
+
+ err = dev_open(conduit, NULL);
+ if (err < 0) {
+ netdev_err(dev, "failed to open conduit %s\n", conduit->name);
+ goto out;
+ }
+
+ err = dsa_user_host_uc_install(dev, dev->dev_addr);
+ if (err)
+ goto out;
+
+ err = dsa_port_enable_rt(dp, dev->phydev);
+ if (err)
+ goto out_del_host_uc;
+
+ return 0;
+
+out_del_host_uc:
+ dsa_user_host_uc_uninstall(dev);
+out:
+ return err;
+}
+
+static int dsa_user_close(struct net_device *dev)
+{
+ struct dsa_port *dp = dsa_user_to_port(dev);
+
+ dsa_port_disable_rt(dp);
+
+ dsa_user_host_uc_uninstall(dev);
return 0;
}
@@ -448,7 +470,6 @@ static void dsa_user_set_rx_mode(struct net_device *dev)
static int dsa_user_set_mac_address(struct net_device *dev, void *a)
{
- struct net_device *conduit = dsa_user_to_conduit(dev);
struct dsa_port *dp = dsa_user_to_port(dev);
struct dsa_switch *ds = dp->ds;
struct sockaddr *addr = a;
@@ -470,34 +491,16 @@ static int dsa_user_set_mac_address(struct net_device *dev, void *a)
if (!(dev->flags & IFF_UP))
goto out_change_dev_addr;
- if (dsa_switch_supports_uc_filtering(ds)) {
- err = dsa_port_standalone_host_fdb_add(dp, addr->sa_data, 0);
- if (err)
- return err;
- }
-
- if (!ether_addr_equal(addr->sa_data, conduit->dev_addr)) {
- err = dev_uc_add(conduit, addr->sa_data);
- if (err < 0)
- goto del_unicast;
- }
-
- if (!ether_addr_equal(dev->dev_addr, conduit->dev_addr))
- dev_uc_del(conduit, dev->dev_addr);
+ err = dsa_user_host_uc_install(dev, addr->sa_data);
+ if (err)
+ return err;
- if (dsa_switch_supports_uc_filtering(ds))
- dsa_port_standalone_host_fdb_del(dp, dev->dev_addr, 0);
+ dsa_user_host_uc_uninstall(dev);
out_change_dev_addr:
eth_hw_addr_set(dev, addr->sa_data);
return 0;
-
-del_unicast:
- if (dsa_switch_supports_uc_filtering(ds))
- dsa_port_standalone_host_fdb_del(dp, addr->sa_data, 0);
-
- return err;
}
struct dsa_user_dump_ctx {
--
2.43.2
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