af_packet: use sk_skb_reason_drop to free rx packets

JIRA: https://issues.redhat.com/browse/RHEL-48648
Upstream Status: net-next.git

commit e2e7d78
Author: Yan Zhai <yan@cloudflare.com>
Date:   Mon Jun 17 11:09:27 2024 -0700

    af_packet: use sk_skb_reason_drop to free rx packets

    Replace kfree_skb_reason with sk_skb_reason_drop and pass the receiving
    socket to the tracepoint.

    Reported-by: kernel test robot <lkp@intel.com>
    Closes: https://lore.kernel.org/r/202406011859.Aacus8GV-lkp@intel.com/
    Signed-off-by: Yan Zhai <yan@cloudflare.com>
    Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
    Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Antoine Tenart <atenart@redhat.com>

Author: atenart

net/packet/af_packet.c

@@ -2088,7 +2088,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
 		      struct packet_type *pt, struct net_device *orig_dev)
 {
 	enum skb_drop_reason drop_reason = SKB_CONSUMED;
-	struct sock *sk;
+	struct sock *sk = NULL;
 	struct sockaddr_ll *sll;
 	struct packet_sock *po;
 	u8 *skb_head = skb->data;
@@ -2193,15 +2193,15 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
 		skb->len = skb_len;
 	}
 drop:
-	kfree_skb_reason(skb, drop_reason);
+	sk_skb_reason_drop(sk, skb, drop_reason);
 	return 0;
 }
 
 static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
 		       struct packet_type *pt, struct net_device *orig_dev)
 {
 	enum skb_drop_reason drop_reason = SKB_CONSUMED;
-	struct sock *sk;
+	struct sock *sk = NULL;
 	struct packet_sock *po;
 	struct sockaddr_ll *sll;
 	union tpacket_uhdr h;
@@ -2462,7 +2462,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
 		skb->len = skb_len;
 	}
 drop:
-	kfree_skb_reason(skb, drop_reason);
+	sk_skb_reason_drop(sk, skb, drop_reason);
 	return 0;
 
 drop_n_account:
@@ -2471,7 +2471,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
 	drop_reason = SKB_DROP_REASON_PACKET_SOCK_ERROR;
 
 	sk->sk_data_ready(sk);
-	kfree_skb_reason(copy_skb, drop_reason);
+	sk_skb_reason_drop(sk, copy_skb, drop_reason);
 	goto drop_n_restore;
 }