netdev - [Patch bpf-next v5 8/8] skmsg: get rid of sk_psock_bpf

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Date:   Fri, 19 Feb 2021 15:58:36 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     netdev@...r.kernel.org
Cc:     bpf@...r.kernel.org, duanxiongchun@...edance.com,
        wangdongdong.6@...edance.com, jiang.wang@...edance.com,
        Cong Wang <cong.wang@...edance.com>,
        Jakub Sitnicki <jakub@...udflare.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Lorenz Bauer <lmb@...udflare.com>,
        John Fastabend <john.fastabend@...il.com>
Subject: [Patch bpf-next v5 8/8] skmsg: get rid of sk_psock_bpf_run()

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

It is now nearly identical to bpf_prog_run_pin_on_cpu() and
it has an unused parameter 'psock', so we can just get rid
of it and call bpf_prog_run_pin_on_cpu() directly.

Cc: Jakub Sitnicki <jakub@...udflare.com>
Cc: Daniel Borkmann <daniel@...earbox.net>
Cc: Lorenz Bauer <lmb@...udflare.com>
Cc: John Fastabend <john.fastabend@...il.com>
Signed-off-by: Cong Wang <cong.wang@...edance.com>
---
 net/core/skmsg.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/net/core/skmsg.c b/net/core/skmsg.c
index 286a95304e03..b240be71f21f 100644
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@ -748,12 +748,6 @@ int sk_psock_msg_verdict(struct sock *sk, struct sk_psock *psock,
 }
 EXPORT_SYMBOL_GPL(sk_psock_msg_verdict);
 
-static int sk_psock_bpf_run(struct sk_psock *psock, struct bpf_prog *prog,
-			    struct sk_buff *skb)
-{
-	return bpf_prog_run_pin_on_cpu(prog, skb);
-}
-
 static void sk_psock_skb_redirect(struct sk_buff *skb)
 {
 	struct sk_psock *psock_other;
@@ -811,7 +805,7 @@ int sk_psock_tls_strp_read(struct sk_psock *psock, struct sk_buff *skb)
 		skb->sk = psock->sk;
 		skb_dst_drop(skb);
 		skb_bpf_redirect_clear(skb);
-		ret = sk_psock_bpf_run(psock, prog, skb);
+		ret = bpf_prog_run_pin_on_cpu(prog, skb);
 		ret = sk_psock_map_verd(ret, skb_bpf_redirect_fetch(skb));
 		skb->sk = NULL;
 	}
@@ -898,7 +892,7 @@ static void sk_psock_strp_read(struct strparser *strp, struct sk_buff *skb)
 	if (likely(prog)) {
 		skb_dst_drop(skb);
 		skb_bpf_redirect_clear(skb);
-		ret = sk_psock_bpf_run(psock, prog, skb);
+		ret = bpf_prog_run_pin_on_cpu(prog, skb);
 		ret = sk_psock_map_verd(ret, skb_bpf_redirect_fetch(skb));
 	}
 	sk_psock_verdict_apply(psock, skb, ret);
@@ -921,7 +915,7 @@ static int sk_psock_strp_parse(struct strparser *strp, struct sk_buff *skb)
 	prog = READ_ONCE(psock->progs.stream_parser);
 	if (likely(prog)) {
 		skb->sk = psock->sk;
-		ret = sk_psock_bpf_run(psock, prog, skb);
+		ret = bpf_prog_run_pin_on_cpu(prog, skb);
 		skb->sk = NULL;
 	}
 	rcu_read_unlock();
@@ -1014,7 +1008,7 @@ static int sk_psock_verdict_recv(read_descriptor_t *desc, struct sk_buff *skb,
 	if (likely(prog)) {
 		skb_dst_drop(skb);
 		skb_bpf_redirect_clear(skb);
-		ret = sk_psock_bpf_run(psock, prog, skb);
+		ret = bpf_prog_run_pin_on_cpu(prog, skb);
 		ret = sk_psock_map_verd(ret, skb_bpf_redirect_fetch(skb));
 	}
 	sk_psock_verdict_apply(psock, skb, ret);
-- 
2.25.1