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| author | John Fastabend <john.fastabend@gmail.com> | 2020-01-11 09:12:05 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-01-16 01:26:13 +0300 |
| commit | 9aaaa56845a06aeabdd597cbe19492dc01f281ec (patch) | |
| tree | b2a5824d2c4f49e095b913aff1b19de29a79d72f /net/ipv4/tcp_bpf.c | |
| parent | d468e4775c1c351616947ba0cccc43273963b9b5 (diff) | |
| download | linux-9aaaa56845a06aeabdd597cbe19492dc01f281ec.tar.xz | |
bpf: Sockmap/tls, skmsg can have wrapped skmsg that needs extra chaining
Its possible through a set of push, pop, apply helper calls to construct
a skmsg, which is just a ring of scatterlist elements, with the start
value larger than the end value. For example,
end start
|_0_|_1_| ... |_n_|_n+1_|
Where end points at 1 and start points and n so that valid elements is
the set {n, n+1, 0, 1}.
Currently, because we don't build the correct chain only {n, n+1} will
be sent. This adds a check and sg_chain call to correctly submit the
above to the crypto and tls send path.
Fixes: d3b18ad31f93d ("tls: add bpf support to sk_msg handling")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/bpf/20200111061206.8028-8-john.fastabend@gmail.com
Diffstat (limited to 'net/ipv4/tcp_bpf.c')
0 files changed, 0 insertions, 0 deletions