udp6: add missing checks on edumux packet processing
authorPaolo Abeni <pabeni@redhat.com>
Thu, 13 Sep 2018 14:27:21 +0000 (16:27 +0200)
committerDavid S. Miller <davem@davemloft.net>
Sun, 16 Sep 2018 22:27:44 +0000 (15:27 -0700)
commiteb63f2964dbe36f26deac77d3016791675821ded
tree616d95391b21e18b429258bf0a937e00c59e435f
parent2b5a921740a55c00223a797d075b9c77c42cb171
udp6: add missing checks on edumux packet processing

Currently the UDPv6 early demux rx code path lacks some mandatory
checks, already implemented into the normal RX code path - namely
the checksum conversion and no_check6_rx check.

Similar to the previous commit, we move the common processing to
an UDPv6 specific helper and call it from both edemux code path
and normal code path. In respect to the UDPv4, we need to add an
explicit check for non zero csum according to no_check6_rx value.

Reported-by: Jianlin Shi <jishi@redhat.com>
Suggested-by: Xin Long <lucien.xin@gmail.com>
Fixes: c9f2c1ae123a ("udp6: fix socket leak on early demux")
Fixes: 2abb7cdc0dc8 ("udp: Add support for doing checksum unnecessary conversion")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv6/udp.c