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af_packet: Use virtio_net_hdr_from_skb() directly.

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Remove static function __packet_rcv_vnet(), which only called
virtio_net_hdr_from_skb() and BUG()ged out if an error code was
returned.  Instead, call virtio_net_hdr_from_skb() from the former
call sites of __packet_rcv_vnet() and actually use the error handling
code that is already there.

Signed-off-by: Jarno Rajahalme <jarno@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jarno Rajahalme 2016-11-18 15:40:42 -08:00 committed by David S. Miller
parent db60eb5f65
commit 5a21388126
1 changed files with 4 additions and 12 deletions
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16
net/packet/af_packet.c
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@ -1967,15 +1967,6 @@ static unsigned int run_filter(struct sk_buff *skb,
return res;
}
static int __packet_rcv_vnet(const struct sk_buff *skb,
struct virtio_net_hdr *vnet_hdr)
{
if (virtio_net_hdr_from_skb(skb, vnet_hdr, vio_le()))
BUG();
return 0;
}
static int packet_rcv_vnet(struct msghdr *msg, const struct sk_buff *skb,
size_t *len)
{
@ -1985,7 +1976,7 @@ static int packet_rcv_vnet(struct msghdr *msg, const struct sk_buff *skb,
return -EINVAL;
*len -= sizeof(vnet_hdr);
if (__packet_rcv_vnet(skb, &vnet_hdr))
if (virtio_net_hdr_from_skb(skb, &vnet_hdr, vio_le()))
return -EINVAL;
return memcpy_to_msg(msg, (void *)&vnet_hdr, sizeof(vnet_hdr));
@ -2244,8 +2235,9 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
spin_unlock(&sk->sk_receive_queue.lock);
if (po->has_vnet_hdr) {
if (__packet_rcv_vnet(skb, h.raw + macoff -
sizeof(struct virtio_net_hdr))) {
if (virtio_net_hdr_from_skb(skb, h.raw + macoff -
sizeof(struct virtio_net_hdr),
vio_le())) {
spin_lock(&sk->sk_receive_queue.lock);
goto drop_n_account;
}