netdev - [PATCH net-next 1/4] tcp: expose the tcp_mark_push() and tcp_skb

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Message-Id: <c7a97cc05d33a43991f5789469f254f78aa78ebf.1632318035.git.pabeni@redhat.com>
Date:   Wed, 22 Sep 2021 19:26:40 +0200
From:   Paolo Abeni <pabeni@...hat.com>
To:     netdev@...r.kernel.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Mat Martineau <mathew.j.martineau@...ux.intel.com>,
        Eric Dumazet <edumazet@...gle.com>, mptcp@...ts.linux.dev
Subject: [PATCH net-next 1/4] tcp: expose the tcp_mark_push() and tcp_skb_entail() helpers

the tcp_skb_entail() helper is actually skb_entail(), renamed
to provide proper scope.

    The two helper will be used by the next patch.

RFC -> v1:
 - rename skb_entail to tcp_skb_entail (Eric)

Acked-by: Mat Martineau <mathew.j.martineau@...ux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@...hat.com>
---
 include/net/tcp.h | 2 ++
 net/ipv4/tcp.c    | 8 ++++----
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 3166dc15d7d6..4a96f6e0f6f8 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -581,6 +581,8 @@ __u32 cookie_v6_init_sequence(const struct sk_buff *skb, __u16 *mss);
 #endif
 /* tcp_output.c */
 
+void tcp_skb_entail(struct sock *sk, struct sk_buff *skb);
+void tcp_mark_push(struct tcp_sock *tp, struct sk_buff *skb);
 void __tcp_push_pending_frames(struct sock *sk, unsigned int cur_mss,
 			       int nonagle);
 int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb, int segs);
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index e8b48df73c85..c592454625e1 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -647,7 +647,7 @@ int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg)
 }
 EXPORT_SYMBOL(tcp_ioctl);
 
-static inline void tcp_mark_push(struct tcp_sock *tp, struct sk_buff *skb)
+void tcp_mark_push(struct tcp_sock *tp, struct sk_buff *skb)
 {
 	TCP_SKB_CB(skb)->tcp_flags |= TCPHDR_PSH;
 	tp->pushed_seq = tp->write_seq;
@@ -658,7 +658,7 @@ static inline bool forced_push(const struct tcp_sock *tp)
 	return after(tp->write_seq, tp->pushed_seq + (tp->max_window >> 1));
 }
 
-static void skb_entail(struct sock *sk, struct sk_buff *skb)
+void tcp_skb_entail(struct sock *sk, struct sk_buff *skb)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 	struct tcp_skb_cb *tcb = TCP_SKB_CB(skb);
@@ -985,7 +985,7 @@ struct sk_buff *tcp_build_frag(struct sock *sk, int size_goal, int flags,
 #ifdef CONFIG_TLS_DEVICE
 		skb->decrypted = !!(flags & MSG_SENDPAGE_DECRYPTED);
 #endif
-		skb_entail(sk, skb);
+		tcp_skb_entail(sk, skb);
 		copy = size_goal;
 	}
 
@@ -1314,7 +1314,7 @@ int tcp_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t size)
 			process_backlog++;
 			skb->ip_summed = CHECKSUM_PARTIAL;
 
-			skb_entail(sk, skb);
+			tcp_skb_entail(sk, skb);
 			copy = size_goal;
 
 			/* All packets are restored as if they have
-- 
2.26.3