From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 6 Apr 2014 22:47:38 +0000 (-0400)
Subject: new helper: skb_copy_and_csum_datagram_msg()
X-Git-Tag: firefly_0821_release~176^2~2717^2~114^2~16
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=227158db160449b6513d2e31894a135104b90e90;p=firefly-linux-kernel-4.4.55.git

new helper: skb_copy_and_csum_datagram_msg()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 78c299f40bac..cbe4b2078b30 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2651,6 +2651,11 @@ static inline int skb_copy_datagram_msg(const struct sk_buff *from, int offset,
 }
 int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb, int hlen,
 				     struct iovec *iov);
+static inline int skb_copy_and_csum_datagram_msg(struct sk_buff *skb, int hlen,
+			    struct msghdr *msg)
+{
+	return skb_copy_and_csum_datagram_iovec(skb, hlen, msg->msg_iov);
+}
 int skb_copy_datagram_from_iovec(struct sk_buff *skb, int offset,
 				 const struct iovec *from, int from_offset,
 				 int len);
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 4a16b9129079..b2d606833ce4 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1284,9 +1284,8 @@ try_again:
 		err = skb_copy_datagram_msg(skb, sizeof(struct udphdr),
 					    msg, copied);
 	else {
-		err = skb_copy_and_csum_datagram_iovec(skb,
-						       sizeof(struct udphdr),
-						       msg->msg_iov);
+		err = skb_copy_and_csum_datagram_msg(skb, sizeof(struct udphdr),
+						     msg);
 
 		if (err == -EINVAL)
 			goto csum_copy_err;
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 0cbcf98f2cab..8baa53e17a30 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -492,7 +492,7 @@ static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
 			goto csum_copy_err;
 		err = skb_copy_datagram_msg(skb, 0, msg, copied);
 	} else {
-		err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
+		err = skb_copy_and_csum_datagram_msg(skb, 0, msg);
 		if (err == -EINVAL)
 			goto csum_copy_err;
 	}
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index dbc0b042bdd6..7cfb5d745a2d 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -428,7 +428,7 @@ try_again:
 		err = skb_copy_datagram_msg(skb, sizeof(struct udphdr),
 					    msg, copied);
 	else {
-		err = skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov);
+		err = skb_copy_and_csum_datagram_msg(skb, sizeof(struct udphdr), msg);
 		if (err == -EINVAL)
 			goto csum_copy_err;
 	}