netdev - [PATCH net-next 5/5] tcp: remove tcp_queue argument from tso

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Message-Id: <20190226174913.18824-6-edumazet@google.com>
Date:   Tue, 26 Feb 2019 09:49:13 -0800
From:   Eric Dumazet <edumazet@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 5/5] tcp: remove tcp_queue argument from tso_fragment()

tso_fragment() is only called for packets still in write queue.

Remove the tcp_queue parameter to make this more obvious,
even if the comment clearly states this.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/ipv4/tcp_output.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 91f5cc5a3f88953da1043d051af9c5971c6006de..4522579aaca2d24b7be61abac658a3c8cbd2b960 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1846,17 +1846,17 @@ static bool tcp_snd_wnd_test(const struct tcp_sock *tp,
  * know that all the data is in scatter-gather pages, and that the
  * packet has never been sent out before (and thus is not cloned).
  */
-static int tso_fragment(struct sock *sk, enum tcp_queue tcp_queue,
-			struct sk_buff *skb, unsigned int len,
+static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len,
 			unsigned int mss_now, gfp_t gfp)
 {
-	struct sk_buff *buff;
 	int nlen = skb->len - len;
+	struct sk_buff *buff;
 	u8 flags;
 
 	/* All of a TSO frame must be composed of paged data.  */
 	if (skb->len != skb->data_len)
-		return tcp_fragment(sk, tcp_queue, skb, len, mss_now, gfp);
+		return tcp_fragment(sk, TCP_FRAG_IN_WRITE_QUEUE,
+				    skb, len, mss_now, gfp);
 
 	buff = sk_stream_alloc_skb(sk, 0, gfp, true);
 	if (unlikely(!buff))
@@ -1892,7 +1892,7 @@ static int tso_fragment(struct sock *sk, enum tcp_queue tcp_queue,
 
 	/* Link BUFF into the send queue. */
 	__skb_header_release(buff);
-	tcp_insert_write_queue_after(skb, buff, sk, tcp_queue);
+	tcp_insert_write_queue_after(skb, buff, sk, TCP_FRAG_IN_WRITE_QUEUE);
 
 	return 0;
 }
@@ -2391,8 +2391,7 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
 						    nonagle);
 
 		if (skb->len > limit &&
-		    unlikely(tso_fragment(sk, TCP_FRAG_IN_WRITE_QUEUE,
-					  skb, limit, mss_now, gfp)))
+		    unlikely(tso_fragment(sk, skb, limit, mss_now, gfp)))
 			break;
 
 		if (tcp_small_queue_check(sk, skb, 0))
-- 
2.21.0.rc2.261.ga7da99ff1b-goog