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| author |   Wang Shanker <shankerwangmiao@gmail.com> | 2016-04-29 01:29:43 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-05-01 19:32:16 -0400 |
| commit | 018f8258582381bcce484312f0e9ec2970d0383e (patch) | |
| tree | 6688a00ddfbd30eaff6511d06f18d99fe5f55c94 /net/ipv4/inet_hashtables.c | |
| parent | ip_tunnel: fix preempt warning in ip tunnel creation/updating (diff) | |
| download | linux-dev-018f8258582381bcce484312f0e9ec2970d0383e.tar.xz linux-dev-018f8258582381bcce484312f0e9ec2970d0383e.zip | |
net: l2tp: fix reversed udp6 checksum flags
This patch fixes a bug which causes the behavior of whether to ignore
udp6 checksum of udp6 encapsulated l2tp tunnel contrary to what
userspace program requests.
When the flag `L2TP_ATTR_UDP_ZERO_CSUM6_RX` is set by userspace, it is
expected that udp6 checksums of received packets of the l2tp tunnel
to create should be ignored. In `l2tp_netlink.c`:
`l2tp_nl_cmd_tunnel_create()`, `cfg.udp6_zero_rx_checksums` is set
according to the flag, and then passed to `l2tp_core.c`:
`l2tp_tunnel_create()` and then `l2tp_tunnel_sock_create()`. In
`l2tp_tunnel_sock_create()`, `udp_conf.use_udp6_rx_checksums` is set
the same to `cfg.udp6_zero_rx_checksums`. However, if we want the
checksum to be ignored, `udp_conf.use_udp6_rx_checksums` should be set
to `false`, i.e. be set to the contrary. Similarly, the same should be
done to `udp_conf.use_udp6_tx_checksums`.
Signed-off-by: Miao Wang <shankerwangmiao@gmail.com>
Acked-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions