macvtap: signal truncated packets

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macvtap_put_user() never return a value grater than iov length, this in fact
bypasses the truncated checking in macvtap_recvmsg(). Fix this by always
returning the size of packet plus the possible vlan header to let the truncated
checking work.

Cc: Vlad Yasevich <vyasevich@gmail.com>
Cc: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jason Wang 2013-12-09 18:25:17 +08:00 • committed by David S. Miller

parent 923347bb83

commit 730054da38

1 changed files with 14 additions and 13 deletions

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27

drivers/net/macvtap.c

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