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Date: Tue, 4 Jun 2024 14:47:59 -0700
From: Yan Zhai <yan@cloudflare.com>
To: netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Simon Horman <horms@kernel.org>, David Ahern <dsahern@kernel.org>,
	Abhishek Chauhan <quic_abchauha@quicinc.com>,
	Mina Almasry <almasrymina@google.com>,
	Florian Westphal <fw@strlen.de>,
	Alexander Lobakin <aleksander.lobakin@intel.com>,
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	Daniel Borkmann <daniel@iogearbox.net>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Lorenzo Bianconi <lorenzo@kernel.org>,
	Pavel Begunkov <asml.silence@gmail.com>,
	linux-kernel@vger.kernel.org, kernel-team@cloudflare.com,
	Jesper Dangaard Brouer <hawk@kernel.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	Neil Horman <nhorman@tuxdriver.com>,
	linux-trace-kernel@vger.kernel.org,
	Dan Carpenter <dan.carpenter@linaro.org>
Subject: [RFC v3 net-next 7/7] af_packet: use sk_skb_reason_drop to free rx
 packets
Message-ID: <0fa6bd81ccb75b9fe28971a895bb7a700b30b81b.1717529533.git.yan@cloudflare.com>
References: <cover.1717529533.git.yan@cloudflare.com>
Precedence: bulk
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In-Reply-To: <cover.1717529533.git.yan@cloudflare.com>

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>
---
v2->v3: fixed uninitialized sk, added missing report tags.
---
 net/packet/af_packet.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index fce390887591..42d29b8a84fc 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2121,7 +2121,7 @@ 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;
@@ -2226,7 +2226,7 @@ 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;
 }
 
@@ -2234,7 +2234,7 @@ 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;
@@ -2494,7 +2494,7 @@ 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:
@@ -2503,7 +2503,7 @@ 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;
 }
 
-- 
2.30.2