netdev - [Patch bpf-next] udp_bpf: remove some pointless comments

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Message-Id: <20210403052715.13854-1-xiyou.wangcong@gmail.com>
Date:   Fri,  2 Apr 2021 22:27:15 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     netdev@...r.kernel.org
Cc:     bpf@...r.kernel.org, Cong Wang <cong.wang@...edance.com>,
        Jakub Sitnicki <jakub@...udflare.com>,
        John Fastabend <john.fastabend@...il.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Lorenz Bauer <lmb@...udflare.com>
Subject: [Patch bpf-next] udp_bpf: remove some pointless comments

From: Cong Wang <cong.wang@...edance.com>

These comments in udp_bpf_update_proto() are copied from the
original TCP code and apparently do not apply to UDP. Just
remove them.

Reported-by: Jakub Sitnicki <jakub@...udflare.com>
Cc: John Fastabend <john.fastabend@...il.com>
Cc: Daniel Borkmann <daniel@...earbox.net>
Cc: Lorenz Bauer <lmb@...udflare.com>
Signed-off-by: Cong Wang <cong.wang@...edance.com>
---
 net/ipv4/udp_bpf.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/net/ipv4/udp_bpf.c b/net/ipv4/udp_bpf.c
index 7d5c4ebf42fe..4a7e38c5d842 100644
--- a/net/ipv4/udp_bpf.c
+++ b/net/ipv4/udp_bpf.c
@@ -110,7 +110,6 @@ int udp_bpf_update_proto(struct sock *sk, bool restore)
 
 	if (restore) {
 		sk->sk_write_space = psock->saved_write_space;
-		/* Pairs with lockless read in sk_clone_lock() */
 		WRITE_ONCE(sk->sk_prot, psock->sk_proto);
 		return 0;
 	}
@@ -118,7 +117,6 @@ int udp_bpf_update_proto(struct sock *sk, bool restore)
 	if (sk->sk_family == AF_INET6)
 		udp_bpf_check_v6_needs_rebuild(psock->sk_proto);
 
-	/* Pairs with lockless read in sk_clone_lock() */
 	WRITE_ONCE(sk->sk_prot, &udp_bpf_prots[family]);
 	return 0;
 }
-- 
2.25.1