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| author | Daniel Borkmann <daniel@iogearbox.net> | 2018-10-13 02:45:59 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-10-15 12:23:19 -0700 |
| commit | d829e9c4112b52f4f00195900fd4c685f61365ab (patch) | |
| tree | 288ef63195ef7936f0d96a6ff429a470d346071e /include/net/sock.h | |
| parent | 604326b41a6fb9b4a78b6179335decee0365cd8c (diff) | |
| download | linux-rt-d829e9c4112b52f4f00195900fd4c685f61365ab.tar.gz | |
tls: convert to generic sk_msg interface
Convert kTLS over to make use of sk_msg interface for plaintext and
encrypted scattergather data, so it reuses all the sk_msg helpers
and data structure which later on in a second step enables to glue
this to BPF.
This also allows to remove quite a bit of open coded helpers which
are covered by the sk_msg API. Recent changes in kTLs 80ece6a03aaf
("tls: Remove redundant vars from tls record structure") and
4e6d47206c32 ("tls: Add support for inplace records encryption")
changed the data path handling a bit; while we've kept the latter
optimization intact, we had to undo the former change to better
fit the sk_msg model, hence the sg_aead_in and sg_aead_out have
been brought back and are linked into the sk_msg sgs. Now the kTLS
record contains a msg_plaintext and msg_encrypted sk_msg each.
In the original code, the zerocopy_from_iter() has been used out
of TX but also RX path. For the strparser skb-based RX path,
we've left the zerocopy_from_iter() in decrypt_internal() mostly
untouched, meaning it has been moved into tls_setup_from_iter()
with charging logic removed (as not used from RX). Given RX path
is not based on sk_msg objects, we haven't pursued setting up a
dummy sk_msg to call into sk_msg_zerocopy_from_iter(), but it
could be an option to prusue in a later step.
Joint work with John.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 751549ac0a84..7470c45d182d 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2214,10 +2214,6 @@ static inline struct page_frag *sk_page_frag(struct sock *sk) bool sk_page_frag_refill(struct sock *sk, struct page_frag *pfrag); -int sk_alloc_sg(struct sock *sk, int len, struct scatterlist *sg, - int sg_start, int *sg_curr, unsigned int *sg_size, - int first_coalesce); - /* * Default write policy as shown to user space via poll/select/SIGIO */ |