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authorAl Viro <viro@zeniv.linux.org.uk>2014-11-06 01:10:59 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2014-11-24 05:16:39 -0500
commit8feb2fb2bb986c533e18037d3c45a5f779421992 (patch)
tree7c10e24137e82d54aaa533aeadc21a2d2dae922c /net/packet
parent195e952d03a797aa953f62ffe24ec58693e17ed8 (diff)
downloadop-kernel-dev-8feb2fb2bb986c533e18037d3c45a5f779421992.zip
op-kernel-dev-8feb2fb2bb986c533e18037d3c45a5f779421992.tar.gz
switch AF_PACKET and AF_UNIX to skb_copy_datagram_from_iter()
... and kill skb_copy_datagram_iovec() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'net/packet')
-rw-r--r--net/packet/af_packet.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 108d7f3..dfb148e 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2408,6 +2408,10 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
unsigned short gso_type = 0;
int hlen, tlen;
int extra_len = 0;
+ struct iov_iter from;
+ ssize_t n;
+
+ iov_iter_init(&from, WRITE, msg->msg_iov, msg->msg_iovlen, len);
/*
* Get and verify the address.
@@ -2446,8 +2450,9 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
len -= vnet_hdr_len;
- err = memcpy_from_msg((void *)&vnet_hdr, msg, vnet_hdr_len);
- if (err < 0)
+ err = -EFAULT;
+ n = copy_from_iter(&vnet_hdr, vnet_hdr_len, &from);
+ if (n != vnet_hdr_len)
goto out_unlock;
if ((vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) &&
@@ -2517,7 +2522,7 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
}
/* Returns -EFAULT on error */
- err = skb_copy_datagram_from_iovec(skb, offset, msg->msg_iov, 0, len);
+ err = skb_copy_datagram_from_iter(skb, offset, &from, len);
if (err)
goto out_free;
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