net: Update generic_xdp_needed static key to modern api

No changes in refcount semantics -- key init is false; replace

static_key_slow_inc|dec   with   static_branch_inc|dec
static_key_false          with   static_branch_unlikely

Added a '_key' suffix to generic_xdp_needed, for better self
documentation.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 5 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index d6fd1578f770..9f4390182384 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4154,7 +4154,7 @@ void generic_xdp_tx(struct sk_buff *skb, struct bpf_prog *xdp_prog)
 }
 EXPORT_SYMBOL_GPL(generic_xdp_tx);
 
-static struct static_key generic_xdp_needed __read_mostly;
+static DEFINE_STATIC_KEY_FALSE(generic_xdp_needed_key);
 
 int do_xdp_generic(struct bpf_prog *xdp_prog, struct sk_buff *skb)
 {
@@ -4194,7 +4194,7 @@ static int netif_rx_internal(struct sk_buff *skb)
 
         trace_netif_rx(skb);
 
-        if (static_key_false(&generic_xdp_needed)) {
+        if (static_branch_unlikely(&generic_xdp_needed_key)) {
                 int ret;
 
                 preempt_disable();
@@ -4726,9 +4726,9 @@ static int generic_xdp_install(struct net_device *dev, struct netdev_bpf *xdp)
                         bpf_prog_put(old);
 
                 if (old && !new) {
-                        static_key_slow_dec(&generic_xdp_needed);
+                        static_branch_dec(&generic_xdp_needed_key);
                 } else if (new && !old) {
-                        static_key_slow_inc(&generic_xdp_needed);
+                        static_branch_inc(&generic_xdp_needed_key);
                         dev_disable_lro(dev);
                         dev_disable_gro_hw(dev);
                 }
@@ -4756,7 +4756,7 @@ static int netif_receive_skb_internal(struct sk_buff *skb)
         if (skb_defer_rx_timestamp(skb))
                 return NET_RX_SUCCESS;
 
-        if (static_key_false(&generic_xdp_needed)) {
+        if (static_branch_unlikely(&generic_xdp_needed_key)) {
                 int ret;
 
                 preempt_disable();