[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}

To clearly state the intent of copying from linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 288d8559f8c5..4d461595406d 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -386,8 +386,8 @@ static ssize_t tun_chr_aio_read(struct kiocb *iocb, const struct iovec *iv,
                  *   - we are multicast promiscous.
                  *   - we belong to the multicast group.
                  */
-                memcpy(addr, skb->data,
-                       min_t(size_t, sizeof addr, skb->len));
+                skb_copy_from_linear_data(skb, addr, min_t(size_t, sizeof addr,
+                                                                   skb->len));
                 bit_nr = ether_crc(sizeof addr, addr) >> 26;
                 if ((tun->if_flags & IFF_PROMISC) ||
                                 memcmp(addr, tun->dev_addr, sizeof addr) == 0 ||