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| author |   Pavel Begunkov <asml.silence@gmail.com> | 2025-02-14 16:09:44 -0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2025-02-17 05:41:09 -0700 |
| commit | bc57c7d36c4c9c352ed13d98a4f1e4dc27919d6a (patch) | |
| tree | 2ca2e54a18a0381c2cfa7388de6b3d5a080c7d43 /net/lapb/lapb_timer.c | |
| parent | io_uring/zcrx: throttle receive requests (diff) | |
| download | wireguard-linux-bc57c7d36c4c9c352ed13d98a4f1e4dc27919d6a.tar.xz wireguard-linux-bc57c7d36c4c9c352ed13d98a4f1e4dc27919d6a.zip | |
io_uring/zcrx: add copy fallback
There are scenarios in which the zerocopy path can get a kernel buffer
instead of a net_iov and needs to copy it to the user, whether it is
because of mis-steering or simply getting an skb with the linear part.
In this case, grab a net_iov, copy into it and return it to the user as
normally.
At the moment the user doesn't get any indication whether there was a
copy or not, which is left for follow up work.
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: David Wei <dw@davidwei.uk>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20250215000947.789731-10-dw@davidwei.uk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'net/lapb/lapb_timer.c')
0 files changed, 0 insertions, 0 deletions