Now that we have a dedicated NDO for getting a port's parent ID, get rid
of SWITCHDEV_ATTR_ID_PORT_PARENT_ID and convert all callers to use the
NDO exclusively. This is a preliminary change to getting rid of
switchdev_ops eventually.

Signed-off-by: Florian Fainelli <f.faine...@gmail.com>
---
 include/net/switchdev.h   | 11 -----------
 net/bridge/br_switchdev.c | 16 ++++------------
 net/core/net-sysfs.c      | 19 ++++---------------
 net/core/rtnetlink.c      | 18 ++++--------------
 net/ipv4/ipmr.c           | 16 ++++------------
 net/switchdev/switchdev.c | 20 --------------------
 6 files changed, 16 insertions(+), 84 deletions(-)

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 63843ae5dc81..5e87b54c5dc5 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -43,7 +43,6 @@ static inline bool switchdev_trans_ph_commit(struct 
switchdev_trans *trans)
 
 enum switchdev_attr_id {
        SWITCHDEV_ATTR_ID_UNDEFINED,
-       SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
        SWITCHDEV_ATTR_ID_PORT_STP_STATE,
        SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
        SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT,
@@ -61,7 +60,6 @@ struct switchdev_attr {
        void *complete_priv;
        void (*complete)(struct net_device *dev, int err, void *priv);
        union {
-               struct netdev_phys_item_id ppid;        /* PORT_PARENT_ID */
                u8 stp_state;                           /* PORT_STP_STATE */
                unsigned long brport_flags;             /* PORT_BRIDGE_FLAGS */
                unsigned long brport_flags_support;     /* 
PORT_BRIDGE_FLAGS_SUPPORT */
@@ -208,9 +206,6 @@ void switchdev_port_fwd_mark_set(struct net_device *dev,
                                 struct net_device *group_dev,
                                 bool joining);
 
-bool switchdev_port_same_parent_id(struct net_device *a,
-                                  struct net_device *b);
-
 int switchdev_handle_port_obj_add(struct net_device *dev,
                        struct switchdev_notifier_port_obj_info *port_obj_info,
                        bool (*check_cb)(const struct net_device *dev),
@@ -295,12 +290,6 @@ call_switchdev_blocking_notifiers(unsigned long val,
        return NOTIFY_DONE;
 }
 
-static inline bool switchdev_port_same_parent_id(struct net_device *a,
-                                                struct net_device *b)
-{
-       return false;
-}
-
 static inline int
 switchdev_handle_port_obj_add(struct net_device *dev,
                        struct switchdev_notifier_port_obj_info *port_obj_info,
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index 06b0ae44585f..c86d0f4a6aa8 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -14,8 +14,7 @@ static int br_switchdev_mark_get(struct net_bridge *br, 
struct net_device *dev)
 
        /* dev is yet to be added to the port list. */
        list_for_each_entry(p, &br->port_list, list) {
-               if (netdev_port_same_parent_id(dev, p->dev) ||
-                   switchdev_port_same_parent_id(dev, p->dev))
+               if (netdev_port_same_parent_id(dev, p->dev))
                        return p->offload_fwd_mark;
        }
 
@@ -24,19 +23,12 @@ static int br_switchdev_mark_get(struct net_bridge *br, 
struct net_device *dev)
 
 int nbp_switchdev_mark_set(struct net_bridge_port *p)
 {
-       const struct net_device_ops *ops = p->dev->netdev_ops;
-       struct switchdev_attr attr = {
-               .orig_dev = p->dev,
-               .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-       };
-       int err;
+       struct netdev_phys_item_id ppid = { };
+       int err = -EOPNOTSUPP;
 
        ASSERT_RTNL();
 
-       if (ops->ndo_get_port_parent_id)
-               err = dev_get_port_parent_id(p->dev, &attr.u.ppid, true);
-       else
-               err = switchdev_port_attr_get(p->dev, &attr);
+       err = dev_get_port_parent_id(p->dev, &ppid, true);
        if (err) {
                if (err == -EOPNOTSUPP)
                        return 0;
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 4eace9f1dcf9..7c5061123ead 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -12,7 +12,6 @@
 #include <linux/capability.h>
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
-#include <net/switchdev.h>
 #include <linux/if_arp.h>
 #include <linux/slab.h>
 #include <linux/sched/signal.h>
@@ -495,27 +494,17 @@ static ssize_t phys_switch_id_show(struct device *dev,
                                   struct device_attribute *attr, char *buf)
 {
        struct net_device *netdev = to_net_dev(dev);
-       const struct net_device_ops *ops = netdev->netdev_ops;
        ssize_t ret = -EINVAL;
 
        if (!rtnl_trylock())
                return restart_syscall();
 
        if (dev_isalive(netdev)) {
-               struct switchdev_attr attr = {
-                       .orig_dev = netdev,
-                       .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-                       .flags = SWITCHDEV_F_NO_RECURSE,
-               };
-
-               if (ops->ndo_get_port_parent_id)
-                       ret = dev_get_port_parent_id(netdev, &attr.u.ppid,
-                                                    false);
-               else
-                       ret = switchdev_port_attr_get(netdev, &attr);
+               struct netdev_phys_item_id ppid = { };
+
+               ret = dev_get_port_parent_id(netdev, &ppid, false);
                if (!ret)
-                       ret = sprintf(buf, "%*phN\n", attr.u.ppid.id_len,
-                                     attr.u.ppid.id);
+                       ret = sprintf(buf, "%*phN\n", ppid.id_len, ppid.id);
        }
        rtnl_unlock();
 
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 90dd02c1f561..7e1d1e9ad67d 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -46,7 +46,6 @@
 
 #include <linux/inet.h>
 #include <linux/netdevice.h>
-#include <net/switchdev.h>
 #include <net/ip.h>
 #include <net/protocol.h>
 #include <net/arp.h>
@@ -1146,26 +1145,17 @@ static int rtnl_phys_port_name_fill(struct sk_buff 
*skb, struct net_device *dev)
 
 static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device 
*dev)
 {
-       const struct net_device_ops *ops = dev->netdev_ops;
-       int err;
-       struct switchdev_attr attr = {
-               .orig_dev = dev,
-               .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-               .flags = SWITCHDEV_F_NO_RECURSE,
-       };
+       struct netdev_phys_item_id ppid = { };
+       int err = -EOPNOTSUPP;
 
-       if (ops->ndo_get_port_parent_id)
-               err = dev_get_port_parent_id(dev, &attr.u.ppid, false);
-       else
-               err = switchdev_port_attr_get(dev, &attr);
+       err = dev_get_port_parent_id(dev, &ppid, false);
        if (err) {
                if (err == -EOPNOTSUPP)
                        return 0;
                return err;
        }
 
-       if (nla_put(skb, IFLA_PHYS_SWITCH_ID, attr.u.ppid.id_len,
-                   attr.u.ppid.id))
+       if (nla_put(skb, IFLA_PHYS_SWITCH_ID, ppid.id_len, ppid.id))
                return -EMSGSIZE;
 
        return 0;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index c71bcc42d66d..83bf5760066f 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -67,7 +67,6 @@
 #include <net/fib_rules.h>
 #include <linux/netconf.h>
 #include <net/nexthop.h>
-#include <net/switchdev.h>
 
 #include <linux/nospec.h>
 
@@ -837,11 +836,9 @@ static void ipmr_update_thresholds(struct mr_table *mrt, 
struct mr_mfc *cache,
 static int vif_add(struct net *net, struct mr_table *mrt,
                   struct vifctl *vifc, int mrtsock)
 {
+       struct netdev_phys_item_id ppid = { };
        const struct net_device_ops *ops;
        int vifi = vifc->vifc_vifi;
-       struct switchdev_attr attr = {
-               .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-       };
        struct vif_device *v = &mrt->vif_table[vifi];
        struct net_device *dev;
        struct in_device *in_dev;
@@ -920,15 +917,10 @@ static int vif_add(struct net *net, struct mr_table *mrt,
                        vifc->vifc_flags | (!mrtsock ? VIFF_STATIC : 0),
                        (VIFF_TUNNEL | VIFF_REGISTER));
 
-       attr.orig_dev = dev;
        ops = dev->netdev_ops;
-       if (ops->ndo_get_port_parent_id &&
-           !dev_get_port_parent_id(dev, &attr.u.ppid, true)) {
-               memcpy(v->dev_parent_id.id, attr.u.ppid.id, attr.u.ppid.id_len);
-               v->dev_parent_id.id_len = attr.u.ppid.id_len;
-       } else if (!switchdev_port_attr_get(dev, &attr)) {
-               memcpy(v->dev_parent_id.id, attr.u.ppid.id, attr.u.ppid.id_len);
-               v->dev_parent_id.id_len = attr.u.ppid.id_len;
+       if (!dev_get_port_parent_id(dev, &ppid, true)) {
+               memcpy(v->dev_parent_id.id, ppid.id, ppid.id_len);
+               v->dev_parent_id.id_len = ppid.id_len;
        } else {
                v->dev_parent_id.id_len = 0;
        }
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index cd78253de31d..7e1357db33d7 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -592,26 +592,6 @@ int call_switchdev_blocking_notifiers(unsigned long val, 
struct net_device *dev,
 }
 EXPORT_SYMBOL_GPL(call_switchdev_blocking_notifiers);
 
-bool switchdev_port_same_parent_id(struct net_device *a,
-                                  struct net_device *b)
-{
-       struct switchdev_attr a_attr = {
-               .orig_dev = a,
-               .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-       };
-       struct switchdev_attr b_attr = {
-               .orig_dev = b,
-               .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-       };
-
-       if (switchdev_port_attr_get(a, &a_attr) ||
-           switchdev_port_attr_get(b, &b_attr))
-               return false;
-
-       return netdev_phys_item_id_same(&a_attr.u.ppid, &b_attr.u.ppid);
-}
-EXPORT_SYMBOL_GPL(switchdev_port_same_parent_id);
-
 static int __switchdev_handle_port_obj_add(struct net_device *dev,
                        struct switchdev_notifier_port_obj_info *port_obj_info,
                        bool (*check_cb)(const struct net_device *dev),
-- 
2.17.1

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