Re: [PATCH net-next v8 4/4] eventpoll: Add epoll ioctl for epoll_params
From: Eric Dumazet <edumazet@google.com>
Date: 2024-02-13 06:34:33
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linux-doc, linux-fsdevel, lkml, netdev
On Tue, Feb 13, 2024 at 7:17 AM Joe Damato [off-list ref] wrote:
Add an ioctl for getting and setting epoll_params. User programs can use
this ioctl to get and set the busy poll usec time, packet budget, and
prefer busy poll params for a specific epoll context.
Parameters are limited:
- busy_poll_usecs is limited to <= s32_max
- busy_poll_budget is limited to <= NAPI_POLL_WEIGHT by unprivileged
users (!capable(CAP_NET_ADMIN))
- prefer_busy_poll must be 0 or 1
- __pad must be 0
Signed-off-by: Joe Damato <redacted>
Acked-by: Stanislav Fomichev <redacted>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>Reviewed-by: Eric Dumazet <edumazet@google.com> Thanks !