linux-kernel - [PATCH RFC 02/10] net: rename skb_copy_to_page

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Message-ID: <20241028115850.3409893-3-linyunsheng@huawei.com>
Date: Mon, 28 Oct 2024 19:58:42 +0800
From: Yunsheng Lin <linyunsheng@...wei.com>
To: <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Yunsheng Lin
	<linyunsheng@...wei.com>, Alexander Duyck <alexander.duyck@...il.com>, Andrew
 Morton <akpm@...ux-foundation.org>, Linux-MM <linux-mm@...ck.org>, Eric
 Dumazet <edumazet@...gle.com>, Simon Horman <horms@...nel.org>, David Ahern
	<dsahern@...nel.org>
Subject: [PATCH RFC 02/10] net: rename skb_copy_to_page_nocache() helper

Rename skb_copy_to_page_nocache() to skb_copy_to_frag_nocache()
to avoid calling virt_to_page() as we are about to pass virtual
address directly.

CC: Alexander Duyck <alexander.duyck@...il.com>
CC: Andrew Morton <akpm@...ux-foundation.org>
CC: Linux-MM <linux-mm@...ck.org>
Signed-off-by: Yunsheng Lin <linyunsheng@...wei.com>
---
 include/net/sock.h | 9 ++++-----
 net/ipv4/tcp.c     | 7 +++----
 net/kcm/kcmsock.c  | 7 +++----
 3 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/include/net/sock.h b/include/net/sock.h
index 7464e9f9f47c..cf037c870e3b 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2203,15 +2203,14 @@ static inline int skb_add_data_nocache(struct sock *sk, struct sk_buff *skb,
 	return err;
 }
 
-static inline int skb_copy_to_page_nocache(struct sock *sk, struct iov_iter *from,
+static inline int skb_copy_to_frag_nocache(struct sock *sk,
+					   struct iov_iter *from,
 					   struct sk_buff *skb,
-					   struct page *page,
-					   int off, int copy)
+					   char *va, int copy)
 {
 	int err;
 
-	err = skb_do_copy_data_nocache(sk, skb, from, page_address(page) + off,
-				       copy, skb->len);
+	err = skb_do_copy_data_nocache(sk, skb, from, va, copy, skb->len);
 	if (err)
 		return err;
 
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 82cc4a5633ce..d5d2fca8a688 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1219,10 +1219,9 @@ int tcp_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t size)
 			if (!copy)
 				goto wait_for_space;
 
-			err = skb_copy_to_page_nocache(sk, &msg->msg_iter, skb,
-						       pfrag->page,
-						       pfrag->offset,
-						       copy);
+			err = skb_copy_to_frag_nocache(sk, &msg->msg_iter, skb,
+						       page_address(pfrag->page) +
+						       pfrag->offset, copy);
 			if (err)
 				goto do_error;
 
diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c
index 24aec295a51c..94719d4af5fa 100644
--- a/net/kcm/kcmsock.c
+++ b/net/kcm/kcmsock.c
@@ -856,10 +856,9 @@ static int kcm_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
 			if (!sk_wmem_schedule(sk, copy))
 				goto wait_for_memory;
 
-			err = skb_copy_to_page_nocache(sk, &msg->msg_iter, skb,
-						       pfrag->page,
-						       pfrag->offset,
-						       copy);
+			err = skb_copy_to_frag_nocache(sk, &msg->msg_iter, skb,
+						       page_address(pfrag->page) +
+						       pfrag->offset, copy);
 			if (err)
 				goto out_error;
 
-- 
2.33.0