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| author |   Daniel Borkmann <daniel@iogearbox.net> | 2016-02-19 23:05:26 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-02-21 22:07:10 -0500 |
| commit | 2f72959a9c1260ade234f353ccca91118151af66 (patch) | |
| tree | fdd08812be172d834752c55f580889256341e1a9 /net/unix/af_unix.c | |
| parent | bpf: try harder on clones when writing into skb (diff) | |
| download | wireguard-linux-2f72959a9c1260ade234f353ccca91118151af66.tar.xz wireguard-linux-2f72959a9c1260ade234f353ccca91118151af66.zip | |
bpf: fix csum update in bpf_l4_csum_replace helper for udp
When using this helper for updating UDP checksums, we need to extend
this in order to write CSUM_MANGLED_0 for csum computations that result
into 0 as sum. Reason we need this is because packets with a checksum
could otherwise become incorrectly marked as a packet without a checksum.
Likewise, if the user indicates BPF_F_MARK_MANGLED_0, then we should
not turn packets without a checksum into ones with a checksum.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions