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| author |   art <art@openbsd.org> | 2003-04-01 23:42:24 +0000 |
|---|---|---|
| committer | art <art@openbsd.org> | 2003-04-01 23:42:24 +0000 |
| commit | d412d870e1d9770d99b2c7d9126a61c9b0b53493 (patch) | |
| tree | 7a0e92dd42514e95129204a13694963299061232 /lib/libc | |
| parent | use PAGE_MASK instead of PAGE_SIZE-1 (diff) | |
| download | wireguard-openbsd-d412d870e1d9770d99b2c7d9126a61c9b0b53493.tar.xz wireguard-openbsd-d412d870e1d9770d99b2c7d9126a61c9b0b53493.zip | |
When using bpf(4) in immediate mode, and using kevent(2) to receive
notification of packet arrival, the usermode application isn't notified
until a second packet arrives.
This is because KNOTE() calls filt_bpfread() before bd_slen has been
updated with the newly arrived packet length, so it looks like there
is no data there.
Moving the bpf_wakeup() call for immediate mode to after bd_slen is set
fixes it.
From: wayne@epipe.com.au in pr 3175
Diffstat (limited to 'lib/libc')
0 files changed, 0 insertions, 0 deletions