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| author |   Eric Dumazet <edumazet@google.com> | 2016-10-29 11:02:36 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-10-31 15:29:11 -0400 |
| commit | 4f2e4ad56a65f3b7d64c258e373cb71e8d2499f4 (patch) | |
| tree | bda55b33236870d871bc3402abc8b14f4f262f56 /drivers/net/xen-netfront.c | |
| parent | net: clear sk_err_soft in sk_clone_lock() (diff) | |
| download | linux-rng-4f2e4ad56a65f3b7d64c258e373cb71e8d2499f4.tar.xz linux-rng-4f2e4ad56a65f3b7d64c258e373cb71e8d2499f4.zip | |
net: mangle zero checksum in skb_checksum_help()
Sending zero checksum is ok for TCP, but not for UDP.
UDPv6 receiver should by default drop a frame with a 0 checksum,
and UDPv4 would not verify the checksum and might accept a corrupted
packet.
Simply replace such checksum by 0xffff, regardless of transport.
This error was caught on SIT tunnels, but seems generic.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/xen-netfront.c')
0 files changed, 0 insertions, 0 deletions