diff options
| author | Björn Töpel <bjorn.topel@intel.com> | 2020-11-30 19:51:57 +0100 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-12-01 00:09:25 +0100 |
| commit | 7c951cafc0cb2e575f1d58677b95ac387ac0a5bd (patch) | |
| tree | 1d47f6c2fb6e3734d52c96a1f0abcf38e2c08cf5 /net/core/sock.c | |
| parent | 7fd3253a7de6a317a0683f83739479fb880bffc8 (diff) | |
| download | linux-7c951cafc0cb2e575f1d58677b95ac387ac0a5bd.tar.gz | |
net: Add SO_BUSY_POLL_BUDGET socket option
This option lets a user set a per socket NAPI budget for
busy-polling. If the options is not set, it will use the default of 8.
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/bpf/20201130185205.196029-3-bjorn.topel@gmail.com
Diffstat (limited to 'net/core/sock.c')
| -rw-r--r-- | net/core/sock.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index e05f2e52b5a8b8..d422a68084050c 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1165,6 +1165,16 @@ set_sndbuf: else WRITE_ONCE(sk->sk_prefer_busy_poll, valbool); break; + case SO_BUSY_POLL_BUDGET: + if (val > READ_ONCE(sk->sk_busy_poll_budget) && !capable(CAP_NET_ADMIN)) { + ret = -EPERM; + } else { + if (val < 0 || val > U16_MAX) + ret = -EINVAL; + else + WRITE_ONCE(sk->sk_busy_poll_budget, val); + } + break; #endif case SO_MAX_PACING_RATE: |