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| author | Eric Dumazet <edumazet@google.com> | 2016-12-07 10:05:36 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-12-08 13:30:22 -0500 |
| commit | 3665f3817cd354ab7a811b3a4f282c4f5cb1a0d0 (patch) | |
| tree | bfa286eca8f2807aa35c241507e05955884379b2 /kernel/bpf/verifier.c | |
| parent | c8c8b127091b758f5768f906bcdeeb88bc9951ca (diff) | |
| download | lwn-3665f3817cd354ab7a811b3a4f282c4f5cb1a0d0.tar.gz lwn-3665f3817cd354ab7a811b3a4f282c4f5cb1a0d0.zip | |
net: do not read sk_drops if application does not care
sk_drops can be an often written field, do not read it unless
application showed interest.
Note that sk_drops can be read via inet_diag, so applications
can avoid getting this info from every received packet.
In the future, 'reading' sk_drops might require folding per node or per
cpu fields, and thus become even more expensive than today.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/verifier.c')
0 files changed, 0 insertions, 0 deletions