net: Add and use skb_copy_datagram_msg() helper.
This encapsulates all of the skb_copy_datagram_iovec() callers
with call argument signature "skb, offset, msghdr->msg_iov, length".
When we move to iov_iters in the networking, the iov_iter object will
sit in the msghdr.
Having a helper like this means there will be less places to touch
during that transformation.
Based upon descriptions and patch from Al Viro.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 339c74a..0a7cc56 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -237,7 +237,7 @@
}
skb_reset_transport_header(skb);
- err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+ err = skb_copy_datagram_msg(skb, 0, msg, copied);
if (err == 0) {
sock_recv_ts_and_drops(msg, sk, skb);
@@ -328,7 +328,7 @@
}
chunk = min_t(unsigned int, skb->len, size);
- if (skb_copy_datagram_iovec(skb, 0, msg->msg_iov, chunk)) {
+ if (skb_copy_datagram_msg(skb, 0, msg, chunk)) {
skb_queue_head(&sk->sk_receive_queue, skb);
if (!copied)
copied = -EFAULT;