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net: Add and use skb_copy_datagram_msg() helper.

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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>
This commit is contained in:
David S. Miller
2014-11-05 16:46:40 -05:00
parent 1d76c1d028
commit 51f3d02b98
43 changed files with 58 additions and 57 deletions
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net/packet/af_packet.c
+1 -1
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@@ -2953,7 +2953,7 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock,
msg->msg_flags |= MSG_TRUNC;
}
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
err = skb_copy_datagram_msg(skb, 0, msg, copied);
if (err)
goto out_free;