netdev - [PATCH net-next 1/2] tcp: rename sk_wmem_free

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Date:   Fri, 29 Oct 2021 18:18:29 -0400
From:   Talal Ahmad <mailtalalahmad@...il.com>
To:     davem@...emloft.net, netdev@...r.kernel.org
Cc:     arjunroy@...gle.com, edumazet@...gle.com, soheil@...gle.com,
        willemb@...gle.com, Talal Ahmad <talalahmad@...gle.com>
Subject: [PATCH net-next 1/2] tcp: rename sk_wmem_free_skb

From: Talal Ahmad <talalahmad@...gle.com>

sk_wmem_free_skb() is only used by TCP.

Rename it to make this clear, and move its declaration to
include/net/tcp.h

Signed-off-by: Talal Ahmad <talalahmad@...gle.com>
Acked-by: Soheil Hassas Yeganeh <soheil@...gle.com>
Acked-by: Arjun Roy <arjunroy@...gle.com>
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 include/net/sock.h    | 7 -------
 include/net/tcp.h     | 9 ++++++++-
 net/ipv4/tcp.c        | 6 +++---
 net/ipv4/tcp_output.c | 2 +-
 4 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/include/net/sock.h b/include/net/sock.h
index 620de053002d..b32906e1ab55 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1603,13 +1603,6 @@ static inline void sk_mem_uncharge(struct sock *sk, int size)
 		__sk_mem_reclaim(sk, SK_RECLAIM_CHUNK);
 }
 
-static inline void sk_wmem_free_skb(struct sock *sk, struct sk_buff *skb)
-{
-	sk_wmem_queued_add(sk, -skb->truesize);
-	sk_mem_uncharge(sk, skb->truesize);
-	__kfree_skb(skb);
-}
-
 static inline void sock_release_ownership(struct sock *sk)
 {
 	if (sk->sk_lock.owned) {
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 8e8c5922a7b0..70972f3ac8fa 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -290,6 +290,13 @@ static inline bool tcp_out_of_memory(struct sock *sk)
 	return false;
 }
 
+static inline void tcp_wmem_free_skb(struct sock *sk, struct sk_buff *skb)
+{
+	sk_wmem_queued_add(sk, -skb->truesize);
+	sk_mem_uncharge(sk, skb->truesize);
+	__kfree_skb(skb);
+}
+
 void sk_forced_mem_schedule(struct sock *sk, int size);
 
 bool tcp_check_oom(struct sock *sk, int shift);
@@ -1875,7 +1882,7 @@ static inline void tcp_rtx_queue_unlink_and_free(struct sk_buff *skb, struct soc
 {
 	list_del(&skb->tcp_tsorted_anchor);
 	tcp_rtx_queue_unlink(skb, sk);
-	sk_wmem_free_skb(sk, skb);
+	tcp_wmem_free_skb(sk, skb);
 }
 
 static inline void tcp_push_pending_frames(struct sock *sk)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index a7b1138d619c..bc7f419184aa 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -932,7 +932,7 @@ void tcp_remove_empty_skb(struct sock *sk)
 		tcp_unlink_write_queue(skb, sk);
 		if (tcp_write_queue_empty(sk))
 			tcp_chrono_stop(sk, TCP_CHRONO_BUSY);
-		sk_wmem_free_skb(sk, skb);
+		tcp_wmem_free_skb(sk, skb);
 	}
 }
 
@@ -2893,7 +2893,7 @@ static void tcp_rtx_queue_purge(struct sock *sk)
 		 * list_del(&skb->tcp_tsorted_anchor)
 		 */
 		tcp_rtx_queue_unlink(skb, sk);
-		sk_wmem_free_skb(sk, skb);
+		tcp_wmem_free_skb(sk, skb);
 	}
 }
 
@@ -2904,7 +2904,7 @@ void tcp_write_queue_purge(struct sock *sk)
 	tcp_chrono_stop(sk, TCP_CHRONO_BUSY);
 	while ((skb = __skb_dequeue(&sk->sk_write_queue)) != NULL) {
 		tcp_skb_tsorted_anchor_cleanup(skb);
-		sk_wmem_free_skb(sk, skb);
+		tcp_wmem_free_skb(sk, skb);
 	}
 	tcp_rtx_queue_purge(sk);
 	INIT_LIST_HEAD(&tcp_sk(sk)->tsorted_sent_queue);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 6867e5db3e35..6fbbf1558033 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2412,7 +2412,7 @@ static int tcp_mtu_probe(struct sock *sk)
 			TCP_SKB_CB(nskb)->eor = TCP_SKB_CB(skb)->eor;
 			tcp_skb_collapse_tstamp(nskb, skb);
 			tcp_unlink_write_queue(skb, sk);
-			sk_wmem_free_skb(sk, skb);
+			tcp_wmem_free_skb(sk, skb);
 		} else {
 			TCP_SKB_CB(nskb)->tcp_flags |= TCP_SKB_CB(skb)->tcp_flags &
 						   ~(TCPHDR_FIN|TCPHDR_PSH);
-- 
2.33.1.1089.g2158813163f-goog