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-rw-r--r--drivers/net/ethernet/rocker/rocker.c15
-rw-r--r--include/linux/netdevice.h14
-rw-r--r--include/uapi/linux/if_link.h1
-rw-r--r--net/core/dev.c20
-rw-r--r--net/core/net-sysfs.c14
-rw-r--r--net/core/rtnetlink.c16
6 files changed, 77 insertions, 3 deletions
diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
index c0051673c9fa..932428314b80 100644
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -4015,7 +4015,8 @@ static int rocker_port_open(struct net_device *dev)
napi_enable(&rocker_port->napi_tx);
napi_enable(&rocker_port->napi_rx);
- rocker_port_set_enable(rocker_port, true);
+ if (!dev->proto_down)
+ rocker_port_set_enable(rocker_port, true);
netif_start_queue(dev);
return 0;
@@ -4227,6 +4228,17 @@ static int rocker_port_get_phys_port_name(struct net_device *dev,
return err ? -EOPNOTSUPP : 0;
}
+static int rocker_port_change_proto_down(struct net_device *dev,
+ bool proto_down)
+{
+ struct rocker_port *rocker_port = netdev_priv(dev);
+
+ if (rocker_port->dev->flags & IFF_UP)
+ rocker_port_set_enable(rocker_port, !proto_down);
+ rocker_port->dev->proto_down = proto_down;
+ return 0;
+}
+
static const struct net_device_ops rocker_port_netdev_ops = {
.ndo_open = rocker_port_open,
.ndo_stop = rocker_port_stop,
@@ -4240,6 +4252,7 @@ static const struct net_device_ops rocker_port_netdev_ops = {
.ndo_fdb_del = switchdev_port_fdb_del,
.ndo_fdb_dump = switchdev_port_fdb_dump,
.ndo_get_phys_port_name = rocker_port_get_phys_port_name,
+ .ndo_change_proto_down = rocker_port_change_proto_down,
};
/********************
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index e20979dfd6a9..45cfd797eb77 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1041,6 +1041,12 @@ typedef u16 (*select_queue_fallback_t)(struct net_device *dev,
* TX queue.
* int (*ndo_get_iflink)(const struct net_device *dev);
* Called to get the iflink value of this device.
+ * void (*ndo_change_proto_down)(struct net_device *dev,
+ * bool proto_down);
+ * This function is used to pass protocol port error state information
+ * to the switch driver. The switch driver can react to the proto_down
+ * by doing a phys down on the associated switch port.
+ *
*/
struct net_device_ops {
int (*ndo_init)(struct net_device *dev);
@@ -1211,6 +1217,8 @@ struct net_device_ops {
int queue_index,
u32 maxrate);
int (*ndo_get_iflink)(const struct net_device *dev);
+ int (*ndo_change_proto_down)(struct net_device *dev,
+ bool proto_down);
};
/**
@@ -1502,6 +1510,10 @@ enum netdev_priv_flags {
*
* @qdisc_tx_busylock: XXX: need comments on this one
*
+ * @proto_down: protocol port state information can be sent to the
+ * switch driver and used to set the phys state of the
+ * switch port.
+ *
* FIXME: cleanup struct net_device such that network protocol info
* moves out.
*/
@@ -1762,6 +1774,7 @@ struct net_device {
#endif
struct phy_device *phydev;
struct lock_class_key *qdisc_tx_busylock;
+ bool proto_down;
};
#define to_net_dev(d) container_of(d, struct net_device, dev)
@@ -2982,6 +2995,7 @@ int dev_get_phys_port_id(struct net_device *dev,
struct netdev_phys_item_id *ppid);
int dev_get_phys_port_name(struct net_device *dev,
char *name, size_t len);
+int dev_change_proto_down(struct net_device *dev, bool proto_down);
struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev);
struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
struct netdev_queue *txq, int *ret);
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 2c7e8e3d3981..24d68b797c59 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -148,6 +148,7 @@ enum {
IFLA_PHYS_SWITCH_ID,
IFLA_LINK_NETNSID,
IFLA_PHYS_PORT_NAME,
+ IFLA_PROTO_DOWN,
__IFLA_MAX
};
diff --git a/net/core/dev.c b/net/core/dev.c
index 69445a33ace6..8810b6bbebfe 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -6075,6 +6075,26 @@ int dev_get_phys_port_name(struct net_device *dev,
EXPORT_SYMBOL(dev_get_phys_port_name);
/**
+ * dev_change_proto_down - update protocol port state information
+ * @dev: device
+ * @proto_down: new value
+ *
+ * This info can be used by switch drivers to set the phys state of the
+ * port.
+ */
+int dev_change_proto_down(struct net_device *dev, bool proto_down)
+{
+ const struct net_device_ops *ops = dev->netdev_ops;
+
+ if (!ops->ndo_change_proto_down)
+ return -EOPNOTSUPP;
+ if (!netif_device_present(dev))
+ return -ENODEV;
+ return ops->ndo_change_proto_down(dev, proto_down);
+}
+EXPORT_SYMBOL(dev_change_proto_down);
+
+/**
* dev_new_index - allocate an ifindex
* @net: the applicable net namespace
*
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 18b34d771ed4..194c1d03b2b3 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -404,6 +404,19 @@ static ssize_t group_store(struct device *dev, struct device_attribute *attr,
NETDEVICE_SHOW(group, fmt_dec);
static DEVICE_ATTR(netdev_group, S_IRUGO | S_IWUSR, group_show, group_store);
+static int change_proto_down(struct net_device *dev, unsigned long proto_down)
+{
+ return dev_change_proto_down(dev, (bool) proto_down);
+}
+
+static ssize_t proto_down_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ return netdev_store(dev, attr, buf, len, change_proto_down);
+}
+NETDEVICE_SHOW_RW(proto_down, fmt_dec);
+
static ssize_t phys_port_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -501,6 +514,7 @@ static struct attribute *net_class_attrs[] = {
&dev_attr_phys_port_id.attr,
&dev_attr_phys_port_name.attr,
&dev_attr_phys_switch_id.attr,
+ &dev_attr_proto_down.attr,
NULL,
};
ATTRIBUTE_GROUPS(net_class);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 9e433d58d265..03d61b54aac0 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -896,7 +896,9 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
+ rtnl_link_get_size(dev) /* IFLA_LINKINFO */
+ rtnl_link_get_af_size(dev) /* IFLA_AF_SPEC */
+ nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */
- + nla_total_size(MAX_PHYS_ITEM_ID_LEN); /* IFLA_PHYS_SWITCH_ID */
+ + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_SWITCH_ID */
+ + nla_total_size(1); /* IFLA_PROTO_DOWN */
+
}
static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev)
@@ -1082,7 +1084,8 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
(dev->ifalias &&
nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) ||
nla_put_u32(skb, IFLA_CARRIER_CHANGES,
- atomic_read(&dev->carrier_changes)))
+ atomic_read(&dev->carrier_changes)) ||
+ nla_put_u8(skb, IFLA_PROTO_DOWN, dev->proto_down))
goto nla_put_failure;
if (1) {
@@ -1319,6 +1322,7 @@ static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
[IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */
[IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN },
[IFLA_LINK_NETNSID] = { .type = NLA_S32 },
+ [IFLA_PROTO_DOWN] = { .type = NLA_U8 },
};
static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
@@ -1858,6 +1862,14 @@ static int do_setlink(const struct sk_buff *skb,
}
err = 0;
+ if (tb[IFLA_PROTO_DOWN]) {
+ err = dev_change_proto_down(dev,
+ nla_get_u8(tb[IFLA_PROTO_DOWN]));
+ if (err)
+ goto errout;
+ status |= DO_SETLINK_NOTIFY;
+ }
+
errout:
if (status & DO_SETLINK_MODIFIED) {
if (status & DO_SETLINK_NOTIFY)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 20:48:44 +0000