linux/net/tls
John Fastabend 9aaaa56845 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: d3b18ad31f ("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
2020-01-15 23:26:13 +01:00
..
Kconfig net/tls: allow compiling TLS TOE out 2019-10-04 14:07:07 -07:00
Makefile net/tls: add skeleton of MIB statistics 2019-10-05 16:29:00 -07:00
tls_device_fallback.c net: Use skb_frag_off accessors 2019-07-30 14:21:32 -07:00
tls_device.c net/tls: Fix return values to avoid ENOTSUPP 2019-12-06 20:15:39 -08:00
tls_main.c bpf: Sockmap/tls, push write_space updates through ulp updates 2020-01-15 23:26:13 +01:00
tls_proc.c net/tls: Fix unused function warning 2019-11-15 12:12:28 -08:00
tls_sw.c bpf: Sockmap/tls, skmsg can have wrapped skmsg that needs extra chaining 2020-01-15 23:26:13 +01:00
tls_toe.c net/tls: rename tls_hw_* functions tls_toe_* 2019-10-04 14:07:07 -07:00
trace.c net/tls: add tracing for device/offload events 2019-10-05 16:29:00 -07:00
trace.h net/tls: add device decrypted trace point 2019-10-05 16:29:00 -07:00